CN102703931B - Method for stopping and starting two-end electrifying inwards-inclined short circuit port electrolytic cell in uninterruptible power manner - Google Patents
Method for stopping and starting two-end electrifying inwards-inclined short circuit port electrolytic cell in uninterruptible power manner Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 50
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 22
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 238000005498 polishing Methods 0.000 claims abstract description 6
- 230000005611 electricity Effects 0.000 claims description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 22
- 239000004411 aluminium Substances 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000005868 electrolysis reaction Methods 0.000 abstract description 12
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- 230000000694 effects Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 34
- 239000010949 copper Substances 0.000 description 34
- 229910052802 copper Inorganic materials 0.000 description 34
- 230000007704 transition Effects 0.000 description 21
- 238000002788 crimping Methods 0.000 description 19
- 238000013461 design Methods 0.000 description 15
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- 238000010586 diagram Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
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- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
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- 235000013339 cereals Nutrition 0.000 description 2
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- 239000007788 liquid Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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Abstract
The invention relates to the technical field of aluminum electrolysis, specifically to a method for stopping and starting a two-end electrifying inwards-inclined short circuit port electrolytic cell in uninterruptible power manner. The method provided by the invention comprises the following steps: step 1) of polishing a space between guide rods of horizontal buses on a B-face groove of an operation groove; step 2) of mounting four groups of shunt short circuits among horizontal buses on the B-face groove and an A-face groove of an downstream groove, and arranging closed, open commutation switches among the short circuits; step 3) of mounting shunt devices outside short circuit ports on two ends under the operation groove; step 4) of closing the switch in the middle of a short circuit device to perform short circuit; step 5) of measuring voltage at short circuit ports; step 6) of connecting grooves; step 7) of opening the short circuit; step 8) of finishing 180 KA two-end electrifying electrolytic cell stopping and starting operations in uninterruptible power manner. The method provided by the invention can avoid stop production and heat insulation states of entire series caused by series power failure, and avoid the phenomenon that electrolytic aluminum production technology conditions are damaged, burst effects after series power cut of electrolytic cells occurs are increased, and energy consumption is increased, thereby prolonging service life of electrolytic cells.
Description
Technical field
The present invention relates to technical field of aluminum electrolysis, specifically relate to a kind of 180KA two ends and enter the inclined short-circuit opening electrolyzer grooving method that do not have a power failure in electricity.
Background technology
Due to constantly coming into operation of large-current electric solution groove in recent years, the above multiterminal of 300KA enter electrolyser has become main flow grooved, therefore aluminium industry technology unit enters electrolyser for large electric current multiterminal and has developed not have a power failure and stop groove scheme, this kind of scheme entered the upright short-circuit opening busbar of electricity for multiterminal, cannot enter on electric inclined short-circuit opening electrolyzer to use at 180KA two ends, and at present 180KA two ends are entered electrolyser and are still had at home certain quantity, the type electrolyzer is in logical power failure process, the method that can only adopt series to have a power failure operates, but because Aluminum Electrolysis Production pot line power load reaches more than ten ten thousand kW, so when appearring in serial power load, significantly fluctuation (maximum fluctuation is that pot line power failure causes) will cause tremendous influence to electrical network, directly threaten power supply safety.Be subject to the restriction of existing Technology standard, at present, when in electrolysis series, a certain electrolyzer need to lead to/stop groove, generally need to have a power failure 20～30 minutes, during this, whole series is in stopping production keeping warm mode, not only make Aluminum Electrolysis Production technical qualification be seriously damaged, production efficiency reduces, and electrolyzer effect increases, and energy consumption increases, and this impact can continue one to two day, and restricting to a great extent the raising of service life of aluminum electrolysis cell.Therefore, develop 180KA two ends and enter the electrit electrolyzer special use grooving method that do not have a power failure, realize the short circuit operation that do not have a power failure of entering electrolyser in 180KA two ends extremely urgent.
Summary of the invention
The technical problem to be solved in the present invention is for the defect existing in prior art and deficiency, provides a kind of 180KA two ends to enter the inclined short-circuit opening electrolyzer grooving method that do not have a power failure in electricity.
The present invention enters at a kind of two ends the inclined short-circuit opening electrolyzer grooving method that do not have a power failure in electricity and is achieved by following technical proposals: a kind of 180KA enters at two ends in electricity the inclined short-circuit opening electrolyzer grooving method that do not have a power failure and comprises the steps:
1), the space between horizontal bus A2～A3, A5～A6, A7～A8, A10～A11 guide rod on the A face groove of B2～B3, the B5～B6 of horizontal bus, B7～B8, B10～B11 guide rod, downstream slot on the B face groove of polishing operation groove;
2), on the A face groove of the B of operation slot face, downstream slot, between horizontal bus, carry out the installation of four component stream short-circuit, be B2～B3 with A2～A3, B5～B6 and A5～A6, B7～B8 and A7～A8, B10～B11 and A10～A11 between carry out short circuit and be connected, the commutation switch of closure, disconnection is set in the middle of short-circuit;
3), during groove, under operation slot groove, two ends short-circuit opening is installed part flow arrangement outward, installs respectively in outside and the aluminium inlet short-circuit opening outside of flue end short-circuit opening; While stopping groove, do not need short-circuit opening part flow arrangement under mounting groove;
4), after the installation of short circuit equipment, the switch in the middle of can closed short circuit equipment, carries out circuit short circuit, makes the electric current of flowing through in operation slot seldom, the electric current that while stopping groove, operation slot is flowed through is less than 40KA, the electric current that during groove, operation slot is flowed through is less than 27KA;
5), measure short-circuit opening voltage, while stopping groove, voltage is less than 0.8V, during groove, voltage is less than 0.6V, meets the requirements, and carries out the operation of man-made short-circuit's mouth;
6), during groove, the power-off plate between the oblique riser bus bar of operation slot and short-circuit busbar is inserted, insert insulation thimble, then that insulating bolt is firm, the steel backing plate compressing is installed on top; While stopping groove, the power-off plate between the oblique riser bus bar of operation slot and short-circuit busbar is extracted out, then short-circuit busbar and oblique riser bus bar are compressed with bolt, the steel backing plate compressing is installed on top, guarantees the energising of short-circuit opening low-resistance;
7), after short-circuit opening operated, disconnect the short-circuit between operation slot and downstream slot, electrolyzer is entered and normally stop groove phase or normal roasting phase;
8), 180KA two ends are entered electricity and are not had a power failure and stop groove operation and complete.
A kind of 180KA of the present invention enters at two ends the inclined short-circuit opening electrolyzer grooving method that do not have a power failure in electricity following beneficial effect compared with prior art: the present invention has realized 180KA two ends and entered electrolyser and in the situation that not having a power failure, electrolyser is entered in the two ends of need maintenance and carry out bypass and do not have a power failure and stop groove.The electric current that electric 180KA electrolyzer is entered at two ends is through oblique riser bus bar, to enter horizontal bus on groove by horizontal bus under groove, electric current enters on groove after horizontal bus, through anode rod and anode carbon block, enter aluminium liquid, finally by flowing to horizontal bus under groove with the aluminium liquid phase little bus of negative electrode even, form the complete loops of electric current, therefore to carry out electrolyzer bypass, charged in the situation that, the hospital bus bar of electrolyzer is carried out to short circuit, because the internal resistance of hospital bus bar will be well below the internal resistance of electrolyzer itself, therefore after short circuit, the pressure drop meeting at electrolyzer two ends becomes very low, electric current major part can be transferred to hospital bus bar and get on, and the electric current of flowing through on electrolyzer is by very little, with respect to this electrolyzer, be just similar to power down mode, so just, can be in the situation that not having a power failure manual operation short-circuit opening, thereby avoided because lead to/stopping have a power failure cause all electrolyzers all cannot normally work financial loss that Er Gei enterprise brings of groove series.
It is inclined that 180KA enters at two ends electrolyser short-circuit opening, therefore cannot at short-circuit opening, carry out current bypass according to the Mainstream Packs grooving method that do not have a power failure, the present invention enters electrolyser short-circuit opening at 180KA two ends be that on inclined type electrolytic bath, horizontal bus is being installed after anode rod, leave certain space, can on the groove of maintenance groove and downstream slot, between horizontal bus, the current bypass that short circuit equipment keeps in repair groove be installed, form horizontal bus under groove----the oblique riser bus bar of maintenance groove---horizontal bus-----------downstream slot anode rod and anode carbon block------downstream slot aluminium liquid-----current circuit of the little bus of downstream slot negative electrode------horizontal bus under groove of horizontal bus on downstream slot groove on maintenance groove groove.On groove, horizontal bus is after installing anode rod, has the space of 11 360 * 550 ㎜, and wherein, except having laid between the 9th guide rod and the tenth guide rod bus lifting machine support cannot use, all the other 10 places all can connect short circuit bus.Therefore according to the current density of horizontal bus, be 0.4 A/mm2, space, every place can overcurrent: 360 ㎜ * 0.4, ㎜ * 550 A/mm
2=79200A, because horizontal bus on groove is in groove process, be flexible coupling at anode rod and the installation of horizontal bus upside, therefore for ease of installing, single short circuit area available on horizontal bus can be made as 360 ㎜ * 400 ㎜, and overcurrent size is: 360 ㎜ * 0.4, ㎜ * 400 A/mm
2=57600A, so 180KA electric current only need carry out the object that four groups of short circuits can be realized shunting short circuit, for the ease of installing, can between 2～3,5～6,7～8,10～11 guide rods, short circuit bus be installed respectively.
The inventive method does not have a power failure when stopping slot device and stopping groove operation by adopting, short circuit mouth for electrolytic bath voltage can be dropped to and is less than 0.6V, by electric current, be less than 27KA, short circuit mouth for electrolytic bath can cannot produce electric arc because striking voltage is little, can avoid personnel's burn while carrying out short-circuit opening manual operation.
A kind of 180KA of the present invention enters at two ends in electricity the do not have a power failure application of grooving method of inclined short-circuit opening electrolyzer can be realized 180KA two ends and enter the logical groove operation that stops of not having a power failure of electrolyser, can avoid stopping because 180KA pot line has a power failure to lead to the power network fluctuation that groove causes, avoid electrical network to cause bad impact, threaten power supply safety.
The inventive method can be avoided the whole serial stopping production keeping warm mode that has a power failure and cause because of series, has avoided the destruction of Aluminum Electrolysis Production technical qualification, and having reduced the rear burst of pot line power failure effect increases, and the phenomenon that energy consumption increases, has improved bath life.
A kind of 180KA of the present invention enter at two ends electricity in inclined short-circuit opening electrolyzer do not have a power failure grooving method be applicable to two ends enter electricity in inclined short-circuit opening electrolyzer.The embodiment of the present invention be take 180KA two ends and is entered electrit electrolyzer as example designs, and for other two ends, enters electrolyser, only needs to change the shunt group number of electric current short circuit, just can Using such method carry out equally.
Accompanying drawing explanation
The present invention enters at a kind of two ends the inclined short-circuit opening electrolyzer grooving method that do not have a power failure in electricity following accompanying drawing:
Fig. 1 is that the inclined short-circuit opening electrolyzer main TV structure schematic diagram of grooving method short circuit mouth for electrolytic bath that do not have a power failure in electricity is entered at a kind of two ends of the present invention;
Fig. 2 is that inclined short-circuit opening electrolyzer do not have a power failure horizontal bus and short-circuit installation site structural representation on grooving method electrolytic bath are entered in electricity in a kind of two ends of the present invention;
Fig. 3 is that the inclined short-circuit opening electrolyzer grooving method structural representation that do not have a power failure in electricity is entered at a kind of two ends of the present invention;
Fig. 4 is that a kind of two ends of the present invention are entered in electricity the inclined short-circuit opening electrolyzer grooving method electrolyzer that do not have a power failure and do not had a power failure and stop slot device mounting structure schematic diagram;
Fig. 5 is that the inclined short-circuit opening electrolyzer grooving method commutation switch internal main TV structure schematic diagram that do not have a power failure in electricity is entered at a kind of two ends of the present invention;
Fig. 6 is that the inclined short-circuit opening electrolyzer grooving method commutation switch private side TV structure schematic diagram that do not have a power failure in electricity is entered at a kind of two ends of the present invention;
Fig. 7 is that the inclined short-circuit opening electrolyzer high-order busbar structure schematic diagram that connects of grooving method that do not have a power failure is entered in electricity at a kind of two ends of the present invention;
Fig. 8 is that a kind of two ends of the present invention are entered in electricity the inclined short-circuit opening electrolyzer grooving method low level that do not have a power failure and connected busbar structure schematic diagram;
Fig. 9 is that the inclined short-circuit opening electrolyzer grooving method clamp structure schematic diagram that do not have a power failure in electricity is entered at a kind of two ends of the present invention.
Wherein: 1, oblique riser bus bar; 2, short-circuit busbar; 3, power-off plate; 4, steel backing plate; 5, insulating bolt; 6, insulation thimble; 7, soft master tape; 8, horizontal bus on groove; 9, A2～A3; 10, A5～A6; 11, A7～A8; 12, A10～A11; 13, anode rod; 14, groove cover plate; 15, pot shell; 16, operation slot; 17, short-circuit; 18, short-circuit opening part flow arrangement under groove; 19, short-circuit opening bus under downstream slot groove; 20, downstream electrolyzer; 21, commutation switch; 22, short-circuit opening bus under operation slot groove; 23, downstream slot anode large bus bar; 24, fixture; 25, downstream slot balance sling; 26, the high-order busbar that connects; 27, downstream slot transition copper coin; 28, erecting stage; 29, operation slot transition copper coin; 30, low level connects busbar; 31, operation slot balance sling; 32, electrolytic bath listrium; 33, hydro-cylinder; 34, Hydraulic Station; 35, guidepost; 36, pilot sleeve; 37, chain-wales; 38, wall screw; 39, switch framework; 40, permanent mechanism driving mechanism; 41, cable connector plug; 42, switch linkage bar; 43, sound main contact; 44, travel switch; 45, sound arcing contact; 46, switch set collar; 47, large crimping plate; 48, little crimping plate; 49, extend web plate; 50, adjustable copper bar; 51, adjustable copper bar backplate; 52, strip connecting plate; 53, handling link; 54, crimping screw rod; 55, fixture steelframe; 56, push bolt.
Embodiment
Below in conjunction with drawings and Examples, inclined short-circuit opening electrolyzer being entered in electricity in a kind of two ends of the present invention does not have a power failure and stops groove method and technology scheme and be further described.
As shown in Fig. 1-Fig. 9, a kind of two ends are entered in electricity inclined short-circuit opening electrolyzer and are not had a power failure and stop grooving method and comprise the steps:
1), polishing operation groove
16b face groove on B2～B3, B5～B6, B7～B8, B10～B11 guide rod, the downstream slot of horizontal bus
20a face groove on space between horizontal bus A2～A3, A5～A6, A7～A8, A10～A11 guide rod;
2), in operation slot
16b face, downstream slot
20a face groove on carry out the installation of four component stream short-circuit 17 between horizontal bus 8, be B2～B3 with A2～A3, B5～B6 and A5～A6, B7～B8 and A7～A8, B10～B11 and A10～A11 between carry out short circuit and be connected, the change of current 21 switches of closure, disconnection are set in the middle of short-circuit 17;
3), during groove, the outer installation part flow arrangement 18 of short-circuit opening bus 19 under downstream slot groove, installs in outside and the aluminium inlet short-circuit opening outside of flue end short-circuit opening respectively; While stopping groove, do not need short-circuit opening part flow arrangement under mounting groove;
4), after the installation of short circuit equipment, the switch in the middle of can closed short circuit equipment, carries out circuit short circuit, makes the electric current of flowing through in operation slot seldom, the electric current that while stopping groove, operation slot is flowed through is less than 40KA, the electric current that during groove, operation slot is flowed through is less than 27KA;
5), measure short-circuit opening voltage, while stopping groove, voltage is less than 0.8V, during groove, voltage is less than 0.6V, meets the requirements, and carries out the operation of man-made short-circuit's mouth;
6), during groove, the power-off plate between the oblique riser bus bar 1 of operation slot 16 and short-circuit busbar 23 is inserted, insert insulation thimble 6, then that insulating bolt 5 is firm, the steel backing plate 4 compressing is installed on top; While stopping groove, the power-off plate between the oblique riser bus bar 1 of operation slot 16 and short-circuit busbar 23 is extracted out, then short-circuit busbar and oblique riser bus bar are compressed with insulating bolt 5, the steel backing plate 4 compressing is installed on top, the energising of assurance short-circuit opening low-resistance;
7), after short-circuit opening operated, disconnect the short-circuit 17 between operation slot 16 and downstream slot 20, electrolyzer is entered normally stop groove phase or normal roasting phase;
8), 180KA two ends are entered electricity and are not had a power failure and stop groove operation and complete.
Embodiment 1.
1,180KA two ends are entered electrolyser and are not had a power failure and stop groove mentality of designing
Realizing 180KA two ends enters electrolyser and does not have a power failure and stop groove and just must be in the situation that not having a power failure forcibly electrolyser be entered in the two ends of need maintenance and carry out bypass.The electric current that electric 180KA electrolyzer is entered at two ends is through oblique riser bus bar 1, to enter horizontal bus on groove by horizontal bus under groove, electric current enters on groove after horizontal bus, through anode rod and anode carbon block, enter aluminium liquid, finally by flowing to horizontal bus under groove with the aluminium liquid phase little bus of negative electrode even, form the complete loops of electric current, therefore to carry out electrolyzer bypass, charged in the situation that, the hospital bus bar of electrolyzer is carried out to short circuit, because the internal resistance of hospital bus bar will be well below the internal resistance of electrolyzer itself, therefore after short circuit, the pressure drop meeting at electrolyzer two ends becomes very low, electric current major part can be transferred to hospital bus bar and get on, and the electric current of flowing through on electrolyzer is by very little, with respect to this electrolyzer, be just similar to power down mode, so just, can be in the situation that not having a power failure manual operation short-circuit opening, thereby avoided because lead to/stopping have a power failure cause all electrolyzers all cannot normally work financial loss that Er Gei enterprise brings of groove series.
2, do not have a power failure and stop the selection of groove potline current short circuit position and the design of electric current grouping
Electric current huge (18 Wan An training) due to the electrolyzer of flowing through, therefore the design of the magnitude of current of electric current short circuit must be rationally, and during short circuit, the design discharge of short circuit material is greater than actual procedure amount, the closure that makes short circuit equipment with disconnect can safety carrying out, otherwise will be abnormally dangerous during operation.
It is inclined that 180KA enters at two ends electrolyser short-circuit opening, therefore cannot at short-circuit opening, carry out current bypass according to the Mainstream Packs grooving method that do not have a power failure, by measurement, learn, on the type electrolytic bath, horizontal bus is after installing anode rod, leave certain space, can on the groove of maintenance groove and downstream slot, between horizontal bus, the current bypass that short circuit equipment keeps in repair groove be installed, form horizontal bus under operation slot groove----the oblique riser bus bar of maintenance groove---horizontal bus-----------downstream slot anode rod and anode carbon block------downstream slot aluminium liquid-----current circuit of the little bus of downstream slot negative electrode------horizontal bus under groove of horizontal bus on downstream slot groove on maintenance groove groove.On groove, horizontal bus is after installing anode rod, has the space of 11 360 * 550 ㎜, and wherein, except having laid between the 9th guide rod and the tenth guide rod bus lifting machine support cannot use, all the other 10 places all can connect short circuit bus.Therefore according to the current density of horizontal bus, be 0.4 A/mm2, space, every place can overcurrent: 360 ㎜ * 0.4, ㎜ * 550 A/mm
2=79200A, because horizontal bus on groove is in groove process, be flexible coupling at anode rod and the installation of horizontal bus upside, therefore for ease of installing, single short circuit area available on horizontal bus can be made as 360 ㎜ * 400 ㎜, and overcurrent size is: 360 ㎜ * 0.4, ㎜ * 400 A/mm
2=57600A, so 180KA electric current only need carry out the object that four groups of short circuits can be realized shunting short circuit, for the ease of installing, can between 2～3,5～6,7～8,10～11 guide rods, short circuit bus be installed respectively.As shown in Figure 2.
A kind of 180KA enters at two ends the inclined short-circuit opening electrolyzer grooving method that do not have a power failure in electricity and comprises the steps:
1), polishing operation groove
16b face groove on B2～B3, B5～B6, B7～B8, B10～B11 guide rod, the downstream slot of horizontal bus
20a face groove on space between horizontal bus A2～A3, A5～A6, A7～A8, A10～A11 guide rod;
2), in operation slot
16b face, downstream slot
20a face groove on carry out the installation of four component stream short-circuit 17 between horizontal bus, be B2～B3 with A2～A3, B5～B6 and A5～A6, B7～B8 and A7～A8, B10～B11 and A10～A11 between carry out short circuit and be connected, the commutation switch 21 of closure, disconnection is set in the middle of short-circuit 17;
3), during groove, the outer installation part flow arrangement 18 of short-circuit opening bus 19 under downstream slot groove, installs in outside and the aluminium inlet short-circuit opening outside of flue end short-circuit opening respectively; While stopping groove, do not need short-circuit opening part flow arrangement under mounting groove;
4), after the installation of short circuit equipment, the switch in the middle of can closed short circuit equipment, carries out circuit short circuit, makes the electric current of flowing through in operation slot seldom, the electric current that while stopping groove, operation slot is flowed through is less than 40KA, the electric current that during groove, operation slot is flowed through is less than 27KA;
5), measure short-circuit opening voltage, while stopping groove, voltage is less than 0.8V, during groove, voltage is less than 0.6V, meets the requirements, and carries out the operation of man-made short-circuit's mouth;
6), during groove, the power-off plate between the oblique riser bus bar 1 of operation slot 16 and short-circuit busbar 23 is inserted, insert insulation thimble 6, then that insulating bolt 5 is firm, the steel backing plate 4 compressing is installed on top; While stopping groove, the power-off plate between the oblique riser bus bar 1 of operation slot 16 and short-circuit busbar 23 is extracted out, then short-circuit busbar 2 and oblique riser bus bar 1 use insulating bolt 5 are compressed, the steel backing plate 4 compressing is installed on top, and assurance short-circuit opening low-resistance is switched on;
7), after short-circuit opening operated, disconnect the short-circuit 17 between operation slot 16 and downstream slot 20, electrolyzer is entered normally stop groove phase or normal roasting phase;
8), 180KA two ends are entered electricity and are not had a power failure and stop groove operation and complete.As shown in Figure 1-Figure 3.
A kind of 180KA of the present invention enters at two ends inclined short-circuit opening electrolyzer used power failure of grooving method that do not have a power failure in electricity and stops slot device mounting structure as shown in Fig. 4-Fig. 8, realize the grooving operations that do not have a power failure, a most important job is the shunting short circuit that carries out potline current, the short-circuit opening that enters electric 180KA electrolyzer due to two ends is interior inclined, the space of part flow arrangement is not installed, do not possess operability yet, therefore must the corresponding part flow arrangement of design.According to two ends, enter the feature of electrolyser, by part flow arrangement Position Design between operation slot horizontal bus 10 and downstream slot horizontal bus 1, operation for the ease of part flow arrangement, design and installation disconnection, Closing Switch in the middle of part flow arrangement, therefore a component stream device is just comprised of four parts: operation slot side connects busbar 30, downstream slot transition copper coin 27, operation slot transition copper coin 29, commutation switch 21, downstream slot connection busbar 26.As shown in Figure 4;
Connect busbar as shown in Fig. 7-Fig. 8, be convenient to easy for installation, a high position is connected to busbar 26 to be connected busbar 30 and to be designed to two with the crimping plate of horizontal bus with low level, large crimping plate 47 is main web plate, little crimping plate 48 is auxiliary web plate, large crimping plate 47, little crimping plate 48 is connected with extension web plate 49, extending web plate 49 is connected with adjustable copper bar 50, adjustable copper bar 50 is to consist of multilayer copper sheet, can carry out the front and back adjustment of copper bar moves, be convenient to when mounted laterally adjust with the relative position of commutation switch 21, for protection multilayer copper sheet, also increase the hardness of adjustable copper bar 50 simultaneously, on adjustable copper bar 50 tops, a set of backplate 51 has been installed, to prevent adjustable copper bar, tear damage.Adjustable copper bar 50 front ends have connected a stripe shape web plate 52 by impacted bolt 54, and stripe shape web plate 52 is when operation and the rebound crimping of commutation switch 21.It is identical with operation slot connection busbar 30 that downstream slot connects busbar 26 structures, downstream slot connects busbar 26 and 27 crimping of downstream slot transition copper coin, operation slot connects busbar 30 and 29 crimping of operation slot transition copper coin, operation slot transition copper coin 29 is connected with commutation switch 21 input terminuss, downstream slot transition copper coin 27 is connected with commutation switch 21 output terminals, formation can break-make current circuit, carry out the shunting of electrolyzer.For improving the streaming rate that connects busbar, in busbar, all crimping plates are copper.The overall dimensions that connects busbar 26 because high-order is larger, is copper simultaneously, and weight is heavier, facilitates handling in order to install, and connects busbar 26 tops two suspension ring 53 of specializing in lifting have been installed in a high position, and during for operation, lifting is used.For adapting to the high-order lifting that height distance between busbar 26 and adjacent downstream groove anode large bus bar 23 and low level are connected busbar 30 that connects, the present invention is provided with the downstream slot balance sling 25 that is exclusively used in high position connection busbar 26 and the operation slot balance sling 31 that is exclusively used in low level and is connected busbar 30.
In process of production, the horizontal bus position of every electrolyzer is not on a sea line, between adjacent slot, also there is one high and one low phenomenon, therefore in connecting the design of busbar, for the connection busbar after installation is tried one's best on a sea line, just connection busbar is designed to two groups: the high-order busbar 26 that connects is connected busbar 30 with low level.The high-order busbar 26 that connects is arranged on the bus bar side that level is higher when operation, and low level connects busbar 30 and be arranged on the bus bar side that level is lower when operation, so just can make the connection busbar of both sides in a sea line as far as possible, is convenient to connect.
Electric current disjunction part: electric current disjunction part is mainly that downstream end transition copper coin 27 and low level transition copper coin 29 form by commutation switch 21 and two transition copper coins, downstream end transition copper coin 27 is to be fixedly connected with low level transition copper coin 29 with commutation switch 21, can not split.The Main Function of downstream end transition copper coin 27 and low level transition copper coin 29 is to be connected busbar 26 to be connected busbar 30 with low level and to carry out crimping with a high position, in order can better to contact in crimping process, downstream end transition copper coin 27 and low level transition copper coin 29 width are larger, for connecting 2 times of busbar, just to be connected busbar 26 with a high position, to be connected busbar 30 with low level and to carry out up and down adjustment highly.
Commutation switch 21 is comprised of switch framework 39, permanent mechanism driving mechanism 40, cable connector plug 41, switch linkage bar 42, sound main contact 43, travel switch 44, sound arcing contact 45 etc., as shown in Fig. 5-Fig. 6, effect is exactly in shunting process, carries out short circuit and the disconnection of electric current.Due to every group of electric current large (being about 45KA), so the inner layouts that adopt the parallel connection of many group contacts of switch, in order to prevent that main switch contact system from being damaged by electric arc, commutation switch 21 is designed with sound main contact 43, sound arcing contact 45.When commutation switch 21 is closed, sound arcing contact 45 is first closed, the rear closure of sound main contact 43; During commutation switch 21 disjunction, the first disjunction of sound main contact 43, the rear disjunction of sound arcing contact 45.Arc energy consumes in arcing contact system, to guarantee reliable contact and the cloudy characteristic of low electricity of main contact, can effectively protect main switch contact system like this.
The design of the integrated auxiliary erecting stage 28 of multiple degree of freedom:
On operation slot groove, on horizontal bus 8 and downstream slot groove, the neighbor distance design load of horizontal bus 23 is 5300 ㎜, but because the production time differs, the groove upper level bus of most electrolyzer is offset, therefore there is larger error in the distance between two groove horizontal bus, is approximately by statistics 5300 ㎜ ± 30mm; Anode electrolytic cell lift vertically highly moves it within the scope of 300mm, and style plate flatness and absolute altitude all have larger error, equipment is placed on and on style plate, lifts connection, commutation switch 21 must be placed on six-freedom degree all can quick-adjustsing auxiliary erecting stage 28 on, can adjust fast and be connected, otherwise installation work will be because of the extremely low Practical significance that loses of efficiency.
Erecting stage 28 as shown in Figure 4, by steel framed structure, formed, Main Function is to support commutation switch 21, commutation switch 21 is fixed on erecting stage 28 tops, erecting stage 28 middle parts are provided with two chain-waless 37, for operator, step down in above and carry out rebound and be connected busbar crimping operation, also can, after commutation switch 21 actions, observe commutation switch 21 break-make situations.The wall screw 38 of capable of regulating balance is equipped with in erecting stage 28 bottoms, carry out erecting stage 28 at groove along the balanced adjustment on plate, erecting stage 28 middle parts are provided with hydraulic pressure and rise device, that is: commutation switch 21 bottoms connect guidepost 35, erecting stage 28 is provided with pilot sleeve 36, it is hinged with hydro-cylinder 33 after interior that guidepost 35 inserts pilot sleeves 36, and hydro-cylinder 33 and Hydraulic Station 34 are all connected on erecting stage 28.When downstream end transition copper coin 27 and low level transition copper coin 29 connect busbar 30 relative positions when lower with high-order busbar 26 or the low level of being connected, can pass through hydraulic efficiency plant on erecting stage 28 by commutation switch 21 jack-up, connect; When downstream end transition copper coin 27 and low level transition copper coin 29, can shrink by the hydro-cylinder on erecting stage 28 when higher with high-order busbar 26 or low level connection busbar 30 relative positions that are connected, commutation switch 21 is put down, connect.
The design of Novel rapid-installation jig 24:
Due in this covering device, electrolysis is more, voltage drop determination device shunting effect, and crimping operation has determined fitting operation intensity, therefore jig is installed must both need to provide enough crimp forces, again light and fast.
In the present invention, according to device, install and need to design fast fixture 24, fixture 24 is stainless steel structure, and a side is equipped with push bolt, in operating process, as long as fixture 24 is stuck in to electrolysis both sides, tighten push bolt, electrolysis better can be contacted, convenient and swift.As shown in Figure 9, jig steelframe 55 is quick clamp main body to fixture 24, carries out the connection of electrolysis during crimping, after steelframe screens linker, with push bolt 56, compresses, and this kind of jig is very easy to use, one man operation.
Do not have a power failure and stop the calculating of groove short-circuit opening operational safety voltage:
Adopt the grooving method that do not have a power failure to lead to and stop groove operation, a most important operation is exactly short-circuit opening operation, after carrying out current bypass, during groove, unclamp short-circuit opening push bolt, open short-circuit opening, in short-circuit opening, add power-off plate, be convenient to electric current and flowed into electrolyzer formation loop, make electrolyzer charged, complete groove work; While stopping groove, unclamp short-circuit opening push bolt, open short-circuit opening, take out the power-off plate in short-circuit opening, form short-circuit opening short circuit current, make electric current not flow through electrolyzer and flow directly into lower platform trough, thereby reaching the object of stopping groove.Adopt the grooving method that do not have a power failure to lead to and stop groove and adopt the logical groove that stops of series power failure different, potline current does not stop, but flowed into next by short-circuit, formed false power down mode, now the short-circuit opening at electrolyzer two ends certain electric current of also flowing through, there is short-circuit opening voltage, when short-circuit opening voltage, be down to how many so, carry out manual operation? according to electrolyzer, producing average voltage is 4V, and production electric current is 180KA, according to Ohm's law, calculate, the resistance of electrolyzer is 2.2 * 10
-5ohm.While therefore stopping groove operation, short circuit mouth for electrolytic bath voltage to be dropped to below 0.8V, at this moment the electric current that electrolyzer passes through is less than 40KA, and short circuit mouth for electrolytic bath can cannot produce electric arc because striking voltage is little, can avoid personnel's burn while carrying out short-circuit opening manual operation.While carrying out groove operation, because operation slot itself is in power down mode, short-circuit opening voltage should equal 0V in theory, but due to parameter reset reason, on general slot control machine panel, shows the magnitude of voltage that is less than 0.2V.Therefore when carrying out groove operation, the danger of consideration electrolyzer groove is greater than stops groove, therefore the operational safety voltage of short circuit mouth for electrolytic bath can be fallen again, be less than 0.6V, by electric current, be less than 27KA, can carry out groove operation, to guarantee the short-circuit opening security in when operation.
The electrolyzer calculating of fractional flow under fluting operation slot that do not have a power failure:
On groove, horizontal bus connects short circuit current, make electric current walk around operation slot and directly flow to downstream slot, this method can make 180KA two ends enter electrolyser and realize the logical groove short-circuit opening operation that stops that do not have a power failure, but when carrying out groove operation, short-circuit opening end of operation, withdraw short-circuit device, can make 180KA electric current moment all be carried in operation slot, due to the not melted by heat energising of burnt grain in this time slot, most of electric current has formed high-voltage at short-circuit opening, because short-circuit opening is crossed flow restriction, may cause short-circuit opening blast, even if short-circuit opening can bear high-voltage, the electric current of electrolyzer flows into negative electrode by anode carbon block in a large number, now because electric current is excessive, negative electrode there will be violent intensification at the beginning of energising, heat up uneven, the phenomenon that surge voltage is too high, anticathode liner causes damage, thereby can cause negative electrode to fall slag in later stage use, arrisdefect, negative electrode conduction Quality Down, affect the normal controlling of production process of electrolyzer, shorten the work-ing life of electrolyzer.Therefore short-circuit opening voltage and the negative electrode of safety steadily heats up when guaranteeing groove, just must between the short-circuit opening of electrolyzer, design part flow arrangement, so that at the beginning of short-circuit device is withdrawn, suitably shunt, after in negative electrode, the complete melting of burnt grain is switched on, remove again part flow arrangement, guarantee the quality of groove.
The fractional flow method of calculation of part flow arrangement:
1) the maximum shunt amount of part flow arrangement work should be: the moment that is entered working order by normal temperature.For guaranteeing the balance of electric current, part flow arrangement under the mounting groove of the two ends of electrolyzer respectively, so according to electrolyzer practical situation, before groove, the medial temperature on operation slot top is not got 25 ℃, press aluminum electrolysis process technological standard, electrolyzer total current surge voltage V is 5.5V.
Maximum shunt rate=2
* 100%=2
* 100% (1)
Wherein: ρ
steelthe resistivity of making part flow arrangement steel used;
ρ
t=25=0.158Ωmm
2/m；
V=maximum impact voltage=5.5V;
L=splitter length (unit: rice);
The S=splitter crimping total area=splitter (thick * wide) * total sheet number (unit: square millimeter);
I=electrolyzer total current (unit: ampere);
?
2) minimum (stablize) streaming rate calculates: the minimum fractional flow of part flow arrangement work should be to switch on about 10 minutes, and splitter temperature reaches more than 500 ℃, and bath voltage is stabilized in 3.5V when upper and lower gradually:
Minimum (stablizing) streaming rate=2
* 100%=2
* 100% (2)
Wherein: ρ
steelthe resistivity of making part flow arrangement steel used;
ρ
t=500=0.445Ωmm
2/m
V=gutter voltage=3.5V;
L=splitter length (unit: rice);
The S=splitter crimping total area=splitter (thick * wide) * total sheet number (unit: square millimeter);
I=electrolyzer total current (unit: ampere);
In general, maximum shunt rate and minimum streaming rate are to derive and draw according to production technique, during calculating, often only calculate splitter and make required data.According to aluminium Qinghai Branch 180kA cell technologies standard > > requirement in < <, in electrolyzer galvanization, for guaranteeing that negative electrode can be stably, heat up in gradient, requiring splitter maximum shunt rate is between 65%～70%, minimum streaming rate is between 15%～20%, in addition in carrying out the design process of splitter, consider the installation site of splitter and the size of mounting face, thereby carry out the selection of material size, due to electrolytic tank series bus A, distance between B face is 1000 ㎜, for ease of splitter Design of length is installed, be 1200 ㎜, only there are 180 ㎜ at splitter two ends for the blast welding block width of steel disc welding, therefore choose the steel disc that width is 180 ㎜, consider that in addition steel disc will have certain sinuousness in installation process, therefore can not select thicker steel disc, by experiment, the steel disc that 2 ㎜ are thick can meet the requirements, by above i.e. fixed condition, that is: splitter maximum shunt rate is 63%, minimum streaming rate is 14%, the length of splitter steel disc is chosen as 1200 ㎜, width is 180 ㎜, thickness is 2 ㎜, with formula (1), (2) calculate, draw and in every electrolyzer galvanization, need 2 groups of (electrolyzer aluminium inlet and flue end are installed one group) identical splitters, every group is welded by 6 onesize steel discs, could meet the streaming request of electrolyzer in galvanization, be that special-shaped cathode electrolytic cell diverter designs specification is:
1200 ㎜ (length) * 180 ㎜ (wide) * 2 ㎜ (thick) * 6 * 2 groups.
The inventive method summary:
1, polishing operation groove
16b face groove on B2～B3, B5～B6, B7～B8, B10～B11 guide rod, the downstream slot of horizontal bus 8
20a face groove on space between horizontal bus A2～A3, A5～A6, A7～A8, A10～A11 guide rod;
2, in operation slot
16b face, downstream slot
20a face groove on carry out the installation of four component stream short-circuit 17 between horizontal bus, be B2～B3 with A2～A3, B5～B6 and A5～A6, B7～B8 and A7～A8, B10～B11 and A10～A11 between carry out short circuit and be connected, the switch of closure, disconnection is set in the middle of short-circuit;
3,, during groove, the outer installation part flow arrangement 18 of short-circuit opening bus 19 under downstream slot groove, installs in outside and the aluminium inlet short-circuit opening outside of flue end short-circuit opening respectively; While stopping groove, do not need short-circuit opening part flow arrangement under mounting groove;
4, after short circuit equipment (needing short-circuit opening part flow arrangement under mounting groove during groove) installation, can be closed switch in the middle of short circuit equipment, carry out circuit short circuit, make the electric current of flowing through in operation slot seldom (electric current that while stopping groove, operation slot is flowed through is less than 40KA, and the electric current that during groove, operation slot is flowed through is less than 27KA);
5, measure short-circuit opening voltage, while stopping groove, voltage is less than 0.8V, and during groove, voltage is less than 0.6V, meets the requirements, and carries out the operation of man-made short-circuit's mouth;
6, during groove, the power-off plate between the oblique riser bus bar 1 of operation slot 16 and short-circuit busbar 23 is inserted, insert insulation thimble 6, then that insulating bolt 5 is firm, the steel backing plate 4 compressing is installed on top; While stopping groove, the power-off plate between the oblique riser bus bar 1 of operation slot 16 and short-circuit busbar 23 is extracted out, then short-circuit busbar and oblique riser bus bar are compressed with insulating bolt 5, the steel backing plate 4 compressing is installed on top, the energising of assurance short-circuit opening low-resistance;
7, after short-circuit opening has operated, disconnect the short-circuit 17 between operation slot 16 and downstream slot 20, electrolyzer is entered and normally stop groove phase or normal roasting phase;
8,180KA two ends are entered electricity and are not had a power failure and stop groove operation and complete.
Claims (1)
1. the inclined short-circuit opening electrolyzer grooving method that do not have a power failure in electricity is entered at two ends, it is characterized in that: described method comprises the steps:
1), polishing operation groove (
16)b face groove on horizontal bus (8) B2～B3, B5～B6, B7～B8, B10～B11 guide rod, downstream slot (
20)a face groove on space between horizontal bus A2～A3, A5～A6, A7～A8, A10～A11 guide rod;
2), operation slot (
16)b face, downstream slot (
20)a face groove on carry out the installation of four component stream short-circuit (17) between horizontal bus, be B2～B3 with A2～A3, B5～B6 and A5～A6, B7～B8 and A7～A8, B10～B11 and A10～A11 between carry out short circuit and be connected, the commutation switch (21) of closure, disconnection is set in the middle of short-circuit (17);
3), during groove, part flow arrangement (18) is installed outside short-circuit opening bus (19) under downstream slot groove, in outside and the aluminium inlet short-circuit opening outside of flue end short-circuit opening, install respectively; While stopping groove, do not need short-circuit opening part flow arrangement under mounting groove;
4), after the installation of short circuit equipment, commutation switch (21) in the middle of can closed short-circuit (17), carries out circuit short circuit, makes the electric current of flowing through in operation slot seldom, the electric current that while stopping groove, operation slot is flowed through is less than 40KA, and the electric current that during groove, operation slot is flowed through is less than 27KA;
5), measure short-circuit opening voltage, while stopping groove, voltage is less than 0.8V, during groove, voltage is less than 0.6V, meets the requirements, and carries out the operation of man-made short-circuit's mouth;
6), during groove, by operation slot (16) tiltedly the power-off plate (3) between riser bus bar (1) and short-circuit busbar (2) insert, insert insulation thimble (6), then that insulating bolt (5) is firm, the steel backing plate (4) of compression is installed on top; While stopping groove, power-off plate (3) between the oblique riser bus bar (1) of operation slot (16) and short-circuit busbar (2) is extracted out, then short-circuit busbar (2) and oblique riser bus bar (1) are compressed with insulating bolt (5), the steel backing plate (4) compressing is installed on top, the energising of assurance short-circuit opening low-resistance;
7), after short-circuit opening operated, disconnect the short-circuit (17) between operation slot (16) and downstream slot (20), electrolyzer is entered normally stop groove phase or normal roasting phase;
8), 180KA two ends are entered electricity and are not had a power failure and stop groove operation and complete.
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| CN104005053A (en) * | 2014-04-29 | 2014-08-27 | 中国铝业股份有限公司 | Apparatus for realizing anode current diversion during aluminum electrolysis cell baking |
| CN104047026B (en) * | 2014-07-02 | 2017-01-11 | 云南云铝润鑫铝业有限公司 | Dormant production-halt method for aluminum electrolysis cell |
| CN104726897B (en) * | 2015-03-06 | 2018-01-02 | 云南云铝涌鑫铝业有限公司 | Electrolyzer system |
| CN109750318B (en) * | 2019-03-20 | 2020-11-03 | 中南大学 | Method for inhibiting PFC (Power factor correction) emission in aluminum electrolysis industry |
| FR3100938B1 (en) * | 2019-09-17 | 2023-03-03 | A M C | Supply circuit for an electrolysis cell comprising a short-circuiting device and a disconnector |
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