CN102703931A - 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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- CN102703931A CN102703931A CN2012101606062A CN201210160606A CN102703931A CN 102703931 A CN102703931 A CN 102703931A CN 2012101606062 A CN2012101606062 A CN 2012101606062A CN 201210160606 A CN201210160606 A CN 201210160606A CN 102703931 A CN102703931 A CN 102703931A
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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 advance that inclined short circuit mouth electrolyzer does not have a power failure and stops the groove method in the electricity.
Background technology
[0002] since in recent years large-current electric separate constantly coming into operation of groove; The above multiterminal of 300KA advance electrolyser has become the main flow grooved; Therefore aluminium industry technology unit advances electrolyser to big electric current multiterminal and has developed not have a power failure and stop the groove scheme, and this kind scheme is advanced the upright short circuit mouth busbar of electricity to multiterminal, can't advance on the electric inclined short circuit mouth electrolyzer to use at the 180KA two ends; And at present the 180KA two ends are advanced electrolyser and are still had certain quantity at home; The type electrolyzer is in logical power failure process, and the method that can only adopt series to have a power failure is operated, but because Aluminum Electrolysis Production pot line power load reaches more than ten ten thousand kW; So work as significantly fluctuation of serial power load appearance (maximum fluctuation is that the pot line power failure causes) and will cause tremendous influence to electrical network, the direct threats power supply safety.Receive the restriction of existing Technology standard, at present, when a certain electrolyzer in the electrolysis series need lead to/when stopping groove; Generally need to have a power failure 20～30 minutes, whole series is in the stopping production keeping warm mode during this, and the Aluminum Electrolysis Production technical qualification are seriously damaged; Production efficiency reduces, and the electrolyzer effect increases, and energy consumption increases; And this influence can continue one to two day, and restricting the raising in aluminium cell life-span to a great extent.Therefore, develop the 180KA two ends and advance the special use of electrit electrolyzer and do not have a power failure and stop the groove method, it is extremely urgent to realize that the short circuit operation that do not have a power failure of electrolyser is advanced at the 180KA two ends.
Summary of the invention
The technical problem that the present invention will solve is to the defective and the deficiency that exist in the prior art, provides a kind of 180KA two ends to advance in the electricity inclined short circuit mouth electrolyzer and does not have a power failure and stop the groove method.
The present invention advances at a kind of two ends in the electricity inclined short circuit mouth electrolyzer and do not have a power failure and stop the groove method and be achieved through following technical proposals: a kind of 180KA advances at two ends in the electricity inclined short circuit mouth electrolyzer and does not have a power failure and stop the groove method and comprise the steps:
1), the space between horizontal bus A2～A3, A5～A6, A7～A8, the A10～A11 guide rod on the A face groove of the B2～B3 of horizontal bus, B5～B6, B7～B8, B10～B11 guide rod, downstream slot on the B face groove of polishing operation groove;
2), in the installation of carrying out four component stream short-circuit on the A face groove of the B of operation slot face, downstream slot between the 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 of closure, disconnection is set in the middle of the short-circuit;
3), during groove, under the operation slot groove, outside the two terminal shortcircuit mouths part flow arrangement is installed, install in the outside and the aluminium inlet short circuit mouth outside of flue end short circuit mouth respectively; Do not need short circuit mouth part flow arrangement under the mounting groove when stopping groove;
4), after the installation of short circuit equipment, can closed short circuit equipment intermediary switch, carry out the circuit short circuit, make the electric current of flowing through on the operation slot seldom, the electric current that operation slot is flowed through when stopping groove is less than 40KA, the electric current that operation slot is flowed through during groove is less than 27KA;
5), measure short circuit mouth voltage, voltage is less than 0.8V when stopping groove, voltage meets the requirements less than 0.6V during groove, carries out the operation of man-made short-circuit's mouth;
6), during groove, the outage plate between oblique riser bus bar of operation slot and the short-circuit busbar is inserted, insert insulation thimble, then that insulating bolt is firm, the steel backing plate that compresses is installed on top; When stopping groove, the outage plate between oblique riser bus bar of operation slot and the short-circuit busbar is extracted out, then short-circuit busbar and oblique riser bus bar are compressed with bolt, the steel backing plate that compresses is installed on top, guarantees the energising of short circuit mouth low-resistance;
7), after short circuit mouth operation accomplishes, break off the short-circuit between operation slot and the downstream slot, electrolyzer is got into normally stop groove phase or normal roasting phase;
8), the 180KA two ends are advanced electricity and are not had a power failure and stop the groove operation and accomplish.
A kind of 180KA of the present invention advances at two ends in the electricity inclined short circuit mouth electrolyzer and do not have a power failure and stop the groove method following beneficial effect is arranged compared with prior art: the present invention has realized that the 180KA two ends advance electrolyser and under situation about not having a power failure, advance electrolyser to 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 advanced at two ends is to get into horizontal bus on the groove through horizontal bus under the groove through oblique riser bus bar, and electric current gets on the groove behind the horizontal bus, through anode rod and anode carbon block; Get into aluminium liquid; Through flowing to horizontal bus under the groove, form the complete loops of electric current at last, therefore will carry out the electrolyzer bypass with the aluminium liquid phase little bus of negative electrode even; Hospital bus bar at the following electrolyzer of charged situation carries out short circuit; Because the internal resistance of hospital bus bar will be well below the internal resistance of electrolyzer itself, so the pressure drop meeting at electrolyzer two ends becomes very low behind the short circuit, the electric current major part can be transferred to hospital bus bar and get on; And the electric current on the electrolyzer of flowing through is with very little; With respect to this electrolyzer, just be similar to power down mode, so just can under situation about not having a power failure, artificially operate the short circuit mouth, thereby avoided because of lead to/stopping the financial loss that groove series has a power failure and causes all electrolyzers all can't works better to bring to enterprise.
It is inclined that 180KA advances at two ends electrolyser short circuit mouth; Therefore can't not have a power failure according to Mainstream Packs and stop the groove method and carry out current bypass at the short circuit mouth; The present invention is at the 180KA two ends after to advance electrolyser short circuit mouth be that horizontal bus is being installed anode rod on the inclined type electrolytic bath; Leave certain space; Can the current bypass that short circuit equipment keeps in repair groove be installed between the horizontal bus on the groove of maintenance groove and downstream slot, form horizontal bus under the groove-----the oblique riser bus bar of maintenance groove--------------downstream slot anode rod and anode carbon block------downstream slot aluminium liquid----the little bus of downstream slot negative electrode------current return of horizontal bus under the groove of horizontal bus on the downstream slot groove that keeps in repair horizontal bus on the groove groove.Horizontal bus is after installing anode rod on the groove, has the space of 11 360 * 550 ㎜, and wherein except that between the 9th guide rod and the tenth guide rod, having laid bus lift support can't use, all the other 10 places all can connect the short circuit bus.Current density according to horizontal bus is 0.4 A/mm2, but therefore every place space overcurrent: 360 ㎜ * 550 ㎜ * 0.4 A/mm
2=79200A; Because horizontal bus will be flexible coupling at anode rod and the installation of horizontal bus upside, therefore for ease of installing in the groove process on the groove; The single short circuit area of available can be made as 360 ㎜ * 400 ㎜ on the horizontal bus, and the overcurrent size is: 360 ㎜ * 400 ㎜ * 0.4 A/mm
2=57600A, so the 180KA electric current only need carry out the purpose that four groups of short circuits can realize shunting short circuit, for the ease of installing the short circuit bus can be installed between 2～3,5～6,7～8,10～11 guide rods respectively.
The inventive method does not have a power failure when stopping slot device and stopping the groove operation through adopting; Can electrolyzer short circuit mouth voltage be dropped to less than 0.6V; Through electric current less than 27KA; Electrolyzer short circuit mouth can can't produce electric arc owing to striking voltage is little, can avoid personnel's burn when carrying out the manual operation of short circuit mouth.
A kind of 180KA of the present invention advances at two ends in the electricity the do not have a power failure application of stopping the groove method of inclined short circuit mouth electrolyzer can realize that the 180KA two ends advance the logical groove operation that stops of not having a power failure of electrolyser; Can avoid stopping the power network fluctuation that groove causes because of the 180KA pot line has a power failure to lead to; Avoid electrical network is caused bad influence, threaten power supply safety.
The inventive method can be avoided the whole serial stopping production keeping warm mode that has a power failure and to cause because of series, has avoided the destruction of Aluminum Electrolysis Production technical qualification, and having reduced the pot line back burst effect that has a power failure increases, and the phenomenon that energy consumption increases has improved bath life.
A kind of 180KA of the present invention advance at two ends the electricity in inclined short circuit mouth electrolyzer do not have a power failure stop the groove method be applicable to two ends advance the electricity in inclined short circuit mouth electrolyzer.It is that example designs that the embodiment of the invention is advanced the electrit electrolyzer with the 180KA two ends, advances electrolyser for other two ends, only needs to change the shunt group number of electric current short circuit, but carries out equally with regard to Using such method.
Description of drawings
The present invention advances at a kind of two ends in the electricity inclined short circuit mouth electrolyzer and does not have a power failure and stop the groove method following accompanying drawing is arranged:
Inclined short circuit mouth electrolyzer does not have a power failure and stops the main TV structure synoptic diagram of groove method electrolyzer short circuit mouth Fig. 1 in the electricity for a kind of two ends of the present invention are advanced;
Inclined short circuit mouth electrolyzer does not have a power failure and stops horizontal bus and short-circuit installation site structural representation on the groove method electrolytic bath Fig. 2 in the electricity for a kind of two ends of the present invention are advanced;
Inclined short circuit mouth electrolyzer does not have a power failure and stops groove method structural representation Fig. 3 in the electricity for a kind of two ends of the present invention are advanced;
Fig. 4 advances in the electricity inclined short circuit mouth electrolyzer for a kind of two ends of the present invention and does not have a power failure and stop groove method electrolyzer and do not have a power failure and stop slot device mounting structure synoptic diagram;
Fig. 5 advances in the electricity inclined short circuit mouth electrolyzer for a kind of two ends of the present invention and does not have a power failure and stop the inner main TV structure synoptic diagram of groove method commutation switch;
Inclined short circuit mouth electrolyzer does not have a power failure and stops groove method commutation switch private side TV structure synoptic diagram Fig. 6 in the electricity for a kind of two ends of the present invention are advanced;
Fig. 7 advances in the electricity inclined short circuit mouth electrolyzer for a kind of two ends of the present invention and does not have a power failure and stop the high-order busbar structural representation that connects of groove method;
Fig. 8 advances in the electricity inclined short circuit mouth electrolyzer for a kind of two ends of the present invention and does not have a power failure and stop groove method low level and connect the busbar structural representation;
Inclined short circuit mouth electrolyzer does not have a power failure and stops groove method clamp structure synoptic diagram Fig. 9 in the electricity for a kind of two ends of the present invention are advanced.
Wherein: 1, oblique riser bus bar; 2, short-circuit busbar; 3, outage plate; 4, steel backing plate; 5, screw rod; 6, insulation thimble; 7, soft master tape; 8, horizontal bus on the 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 mouth part flow arrangement under the groove; 19, short circuit mouth bus under the downstream slot groove; 20, downstream electrolyzer; 21, commutation switch; 22, short circuit mouth bus under the operation slot groove; 23, downstream slot anode large bus bar; 24, anchor clamps; 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 trace; 43, sound main contact; 44, travel switch; 45, sound arcing contact; 46, switch set collar; 47, big crimping plate; 48, little crimping plate; 49, extend web plate; 50, adjustable copper bar; 51, adjustable copper bar backplate; 52, bar shaped web plate; 53, handling link; 54, crimping screw rod; 55, anchor clamps steelframe; 56, push bolt.
Embodiment
Below in conjunction with accompanying drawing and embodiment inclined short circuit mouth electrolyzer being advanced in the electricity at a kind of two ends of the present invention does not have a power failure and stops groove method and technology scheme and further describe.
Like Fig. 1-shown in Figure 9, a kind of two ends are advanced in the electricity inclined short circuit mouth electrolyzer and are not had a power failure and stop the groove 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 8
20A face groove on space between the 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 the 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 the short-circuit 17;
3), during groove, part flow arrangement 18 is installed outside the two terminal shortcircuit mouths 19 under the operation slot groove, respectively in the outside and the installation of the aluminium inlet short circuit mouth outside of flue end short circuit mouth; Do not need short circuit mouth part flow arrangement under the mounting groove when stopping groove;
4), after the installation of short circuit equipment, can closed short circuit equipment intermediary switch, carry out the circuit short circuit, make the electric current of flowing through on the operation slot seldom, the electric current that operation slot is flowed through when stopping groove is less than 40KA, the electric current that operation slot is flowed through during groove is less than 27KA;
5), measure short circuit mouth voltage, voltage is less than 0.8V when stopping groove, voltage meets the requirements less than 0.6V during groove, carries out the operation of man-made short-circuit's mouth;
6), during groove, the outage plate between operation slot 16 oblique riser bus bars 1 and the short-circuit busbar 23 is inserted, insert insulation thimble 6, then that insulating bolt 5 is firm, the steel backing plate 6 that compresses is installed on top; When stopping groove, the outage plate between operation slot 16 oblique riser bus bars 1 and the short-circuit busbar 23 is extracted out, then short-circuit busbar and oblique riser bus bar are compressed with bolt 5, the steel backing plate 6 that compresses is installed on top, guarantees the energising of short circuit mouth low-resistance;
7), after short circuit mouth operation accomplishes, break off the short-circuit 17 between operation slot 16 and the downstream slot 20, electrolyzer is got into normally stop groove phase or normal roasting phase;
8), the 180KA two ends are advanced electricity and are not had a power failure and stop the groove operation and accomplish.
Embodiment 1.
1, the 180KA two ends are advanced electrolyser and are not had a power failure and stop the groove mentality of designing
Realize that the 180KA two ends advance electrolyser and do not have a power failure and stop groove and just must be under situation about not having a power failure advance electrolyser to the two ends of need maintenance by force and carry out bypass.The electric current that electric 180KA electrolyzer is advanced at two ends is to get into horizontal bus on the groove through horizontal bus under the groove through oblique riser bus bar, and electric current gets on the groove behind the horizontal bus, through anode rod and anode carbon block; Get into aluminium liquid; Through flowing to horizontal bus under the groove, form the complete loops of electric current at last, therefore will carry out the electrolyzer bypass with the aluminium liquid phase little bus of negative electrode even; Hospital bus bar at the following electrolyzer of charged situation carries out short circuit; Because the internal resistance of hospital bus bar will be well below the internal resistance of electrolyzer itself, so the pressure drop meeting at electrolyzer two ends becomes very low behind the short circuit, the electric current major part can be transferred to hospital bus bar and get on; And the electric current on the electrolyzer of flowing through is with very little; With respect to this electrolyzer, just be similar to power down mode, so just can under situation about not having a power failure, artificially operate the short circuit mouth, thereby avoided because of lead to/stopping the financial loss that groove series has a power failure and causes all electrolyzers all can't works better to bring to enterprise.
2, do not have a power failure and stop the design that groove potline current short circuit position choice and electric current divide into groups
The electric current huge (training of 18 Wan An) of electrolyzer owing to flow 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 the actual procedure amount; The closure that makes short circuit equipment with break off can safety carrying out, otherwise will be abnormally dangerous during operation.
It is inclined that 180KA advances at two ends electrolyser short circuit mouth; Therefore can't not have a power failure according to Mainstream Packs and stop the groove method and carry out current bypass at the short circuit mouth; Learn through measurement; Horizontal bus is after installing anode rod on the type electrolytic bath; Leave certain space; Can the current bypass that short circuit equipment keeps in repair groove be installed between the horizontal bus on the groove of maintenance groove and downstream slot, form horizontal bus under the operation slot groove-----the oblique riser bus bar of maintenance groove--------------downstream slot anode rod and anode carbon block------downstream slot aluminium liquid----the little bus of downstream slot negative electrode------current return of horizontal bus under the groove of horizontal bus on the downstream slot groove that keeps in repair horizontal bus on the groove groove.Horizontal bus is after installing anode rod on the groove, has the space of 11 360 * 550 ㎜, and wherein except that between the 9th guide rod and the tenth guide rod, having laid bus lift support can't use, all the other 10 places all can connect the short circuit bus.Current density according to horizontal bus is 0.4 A/mm2, but therefore every place space overcurrent: 360 ㎜ * 550 ㎜ * 0.4 A/mm
2=79200A; Because horizontal bus will be flexible coupling at anode rod and the installation of horizontal bus upside, therefore for ease of installing in the groove process on the groove; The single short circuit area of available can be made as 360 ㎜ * 400 ㎜ on the horizontal bus, and the overcurrent size is: 360 ㎜ * 400 ㎜ * 0.4 A/mm
2=57600A, so the 180KA electric current only need carry out the purpose that four groups of short circuits can realize shunting short circuit, for the ease of installing the short circuit bus can be installed between 2～3,5～6,7～8,10～11 guide rods respectively.As shown in Figure 2.
A kind of 180KA advances at two ends in the electricity inclined short circuit mouth electrolyzer and does not have a power failure and stop the groove 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 8
20A face groove on space between the 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 the 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 commutation switch 21 of closure, disconnection are set in the middle of the short-circuit 17;
3), during groove, part flow arrangement 18 is installed outside the two terminal shortcircuit mouths 19 under the operation slot groove, respectively in the outside and the installation of the aluminium inlet short circuit mouth outside of flue end short circuit mouth; Do not need short circuit mouth part flow arrangement under the mounting groove when stopping groove;
4), after the installation of short circuit equipment, can closed short circuit equipment intermediary switch, carry out the circuit short circuit, make the electric current of flowing through on the operation slot seldom, the electric current that operation slot is flowed through when stopping groove is less than 40KA, the electric current that operation slot is flowed through during groove is less than 27KA;
5), measure short circuit mouth voltage, voltage is less than 0.8V when stopping groove, voltage meets the requirements less than 0.6V during groove, carries out the operation of man-made short-circuit's mouth;
6), during groove, the outage plate between operation slot 16 oblique riser bus bars 1 and the short-circuit busbar 23 is inserted, insert insulation thimble 6, then that insulating bolt 5 is firm, the steel backing plate 6 that compresses is installed on top; When stopping groove, the outage plate between operation slot 16 oblique riser bus bars 1 and the short-circuit busbar 23 is extracted out, then short-circuit busbar and oblique riser bus bar are compressed with bolt 5, the steel backing plate 6 that compresses is installed on top, guarantees the energising of short circuit mouth low-resistance;
7), after short circuit mouth operation accomplishes, break off the short-circuit 17 between operation slot 16 and the downstream slot 20, electrolyzer is got into normally stop groove phase or normal roasting phase;
8), the 180KA two ends are advanced electricity and are not had a power failure and stop the groove operation and accomplish.Like Fig. 1-shown in Figure 3.
A kind of 180KA of the present invention advances at two ends in the electricity inclined short circuit mouth electrolyzer and does not have a power failure and stop used power failure of groove method and stop slot device mounting structure such as Fig. 4-shown in Figure 8; Realizing does not have a power failure stops the groove operation; A most important job is the shunting short circuit that carries out potline current, is interior inclined because the short circuit mouth of electric 180KA electrolyzer is advanced at two ends, the space that part flow arrangement is not installed; Do not possess operability yet, therefore must the corresponding part flow arrangement of design.Advance the characteristics of electrolyser according to two ends; With the part flow arrangement Position Design between operation slot horizontal bus 10 and the downstream slot horizontal bus 1; Operation for the ease of part flow arrangement; Design and installation disconnection, close switch in the middle of part flow arrangement, therefore a component stream device just is made up of four parts: the 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 such as Fig. 7-shown in Figure 8, be convenient to easy for installationly, a high position is connected busbar 26 is connected busbar 30 and horizontal bus with low level crimping plate be designed to two; Big crimping plate 47 is main web plate, and little crimping plate 48 is auxiliary web plate, and big crimping plate 47, little crimping plate 48 and extension web plate 49 are connected; Extending web plate 49 is connected with adjustable copper bar 50; Adjustable copper bar 50 is to be made up of the multilayer copper sheet, can carry out the front and back adjustment of copper bar and move, and is convenient to when mounted laterally adjust with the relative position of commutation switch 21; Be protection multilayer copper sheet; Also increase simultaneously the hardness of adjustable copper bar 50, a cover backplate 51 has been installed on adjustable copper bar 50 tops, tear damage to prevent adjustable copper bar.Adjustable copper bar 50 front ends have connected a stripe shape web plate 52 through crimping 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, and operation slot transition copper coin 29 is connected with commutation switch 21 input terminuss, and downstream slot transition copper coin 27 is connected with commutation switch 21 output terminals; But form the current return of break-make, carry out the shunting of electrolyzer.For improving the streaming rate that connects busbar, all crimping plates are copper in the busbar.Because the high-order overall dimensions that connects busbar 26 is bigger, be copper simultaneously, weight is heavier, makes things convenient for handling in order to install, and connects busbar 26 tops in a high position two suspension ring 53 of specializing in lifting have been installed, and lifting is used during for operation.For adapting to the lifting that high-order height distance and the low level that connects between busbar 26 and the adjacent downstream groove anode large bus bar 23 is connected busbar 30, the present invention is provided with the downstream slot balance sling 25 that is exclusively used in high position connection busbar 26 and is exclusively used in low level and is connected the operation slot balance sling 31 of 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 the design that connects busbar, in order to make connection busbar after the installation as far as possible on a sea line, just will connect busbar and be designed to two groups: i.e. high position connection busbar 26 is connected busbar 30 with low level.The high-order busbar 26 that connects is installed in the higher bus bar side of level when operation, low level connects busbar 30 and when operation, is installed in the lower bus bar side of level, and the connection busbar that so just can as far as possible make both sides is convenient to connect in a sea line.
Electric current disjunction part: electric current disjunction part is that downstream end transition copper coin 27 is formed with low level transition copper coin 29 by commutation switch 21 and two transition copper coins mainly; 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 effect 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 in the crimping process, can better to contact; Downstream end transition copper coin 27 is bigger with low level transition copper coin 29 width; For connecting 2 times of busbar, just be connected busbar 30 with low level and carry out up and down adjustment highly to be connected busbar 26 with a high position.
The design of the integrated auxiliary erecting stage 28 of multiple degree of freedom:
On the operation slot groove on horizontal bus 8 and the downstream slot groove neighbor distance value of horizontal bus 23 be 5300 ㎜; But owing to the PT differs; The groove upper level bus of most electrolyzer squints; Therefore the distance between two groove horizontal bus exists than mistake, is approximately 5300 ㎜ ± 30mm through statistics; The anode electrolytic cell lift makes it, and vertically height is mobile in the 300mm scope; And style plate flatness and absolute altitude all have than mistake; Equipment is placed on the style plate and 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 lose Practical significance because of efficient is extremely low.
Erecting stage 28 is as shown in Figure 4; Be made up of steel framed structure, main effect is to support commutation switch 21, and commutation switch 21 is fixed on the top of erecting stage 28; Erecting stage 28 middle parts are provided with two chain-waless 37; Be used for operator and carry out rebound and be connected the busbar crimping operation above stepping down in, also can after commutation switch 21 actions, observe commutation switch 21 break-make situation.Adjustable whole equilibrated wall screw 38 is equipped with in erecting stage 28 bottoms; Carrying out erecting stage 28 adjusts along the balance on the plate at groove; Erecting stage 28 middle parts are equipped with hydraulic pressure and rise device, that is: commutation switch 21 bottoms connect guidepost 35, and erecting stage 28 is provided with pilot sleeve 36; Guidepost 35 is hinged with hydro-cylinder 33 after inserting in the pilot sleeve 36, and hydro-cylinder 33 all is connected on the erecting stage 28 with Hydraulic Station 34.When downstream end transition copper coin 27 and low level transition copper coin 29 connect busbar 30 relative positions when low with high-order busbar 26 or the low level of being connected, can pass through hydraulicefficiency plant on the erecting stage 28 with commutation switch 21 jack-up, connect; When downstream end transition copper coin 27 and low level transition copper coin 29 connect busbar 30 relative positions when higher with high-order busbar 26 or the low level of being connected, can commutation switch 21 be put down through the contraction of the hydro-cylinder on the erecting stage 28, connect.
The design of novel fast-assembling jig 24:
Because in this covering device, crimping face is more, crimping pressure drop determination device shunting effect, the crimping operation has determined fitting operation intensity, therefore jig is installed must both need provide enough crimp forces, light and fast again.
Designed fast fixture 24 according to device installation needs among the present invention, anchor clamps 24 are stainless steel structure, and a side is equipped with push bolt; In operating process,, tighten push bolt as long as anchor clamps 24 are stuck in crimping face both sides; Can crimping face better be contacted, convenient and swift.Anchor clamps 24 are as shown in Figure 9, and jig steelframe 55 is quick jig main body, carry out the connection of crimping face during crimping, behind the steelframe screens linker, compress with push bolt 56, and this kind jig is very easy to use, and one man operation gets final product.
Do not have a power failure and stop the calculating of groove short circuit mouth operational safety voltage:
Adopting does not have a power failure stops the groove method and lead to and stops the groove operation, and a most important operation is exactly that the short circuit mouth is operated, promptly after carrying out current bypass; Unclamp short circuit mouth push bolt during groove; Open the short circuit mouth, in the short circuit mouth, add the outage plate, be convenient to electric current and flowed into electrolyzer formation loop; Make electrolyzer charged, accomplish groove work; When stopping groove, unclamp short circuit mouth push bolt, open the short circuit mouth, take out the outage plate in the short circuit mouth, form short circuit mouth short circuit current, make electric current not flow through electrolyzer and flow directly into down platform trough, thereby reach the purpose of stopping groove.Adopting does not have a power failure stops the groove method and lead to and stops groove and adopt the series power failure to lead to stop groove different, and potline current does not stop, but has flowed into next through short-circuit; Formed false power down mode, this moment electrolyzer two ends short circuit mouth certain electric current of also flowing through, have short circuit mouth voltage; What are reduced to when short circuit mouth voltage so, carry out manual operation? Produce voltage average out to 4V according to electrolyzer, the production electric current is 180KA; Calculate according to Ohm's law, the resistance of electrolyzer is 2.2 * 10
-5Ohm.When therefore stopping the groove operation; To electrolyzer short circuit mouth voltage be dropped to below the 0.8V; At this moment the electric current that passes through of electrolyzer is less than 40KA, and electrolyzer short circuit mouth can can't produce electric arc owing to striking voltage is little, can avoid personnel's burn when carrying out the manual operation of short circuit mouth.When carrying out the groove operation, because operation slot itself is in power down mode, short circuit mouth voltage should equal 0V in theory, but owing to parameter reset reason, shows the magnitude of voltage less than 0.2V on the general slot control machine panel.Therefore when carrying out the groove operation, the danger of consideration electrolyzer groove is greater than stops groove, therefore can the operational safety voltage of electrolyzer short circuit mouth be fallen again; Promptly less than 0.6V; Less than 27KA, can carry out groove operation through electric current, the security when guaranteeing the operation of short circuit mouth.
The electrolyzer calculating of fractional flow under the fluting operation slot that do not have a power failure:
Horizontal bus connects the short circuit electric current on groove, makes electric current walk around operation slot and directly flows to downstream slot, and this method can make the 180KA two ends advance the electrolyser logical groove short circuit mouth operation that stops that realizes not having a power failure; But when carrying out the groove operation, short circuit mouth end of operation is withdrawn short-circuit device; 180KA electric current moment all is carried on the operation slot because the not melted by heat energising of burnt grain in this time slot, most of electric current at the short circuit interruption-forming high-voltage; The flow restriction because short circuit is made a slip of the tongue may cause the blast of short circuit mouth, even the short circuit mouth can bear high-voltage; The electric current of electrolyzer flows into negative electrode through anode carbon block in a large number, and this moment, violent heat up, heat up uneven, the too high phenomenon of surge voltage can appear in negative electrode at the beginning of energising because electric current is excessive; The anticathode liner causes damage, thereby can cause negative electrode in the later stage use, to fall slag, arrisdefect, negative electrode conduction downgrade; Influence electrolyzer ordinary production technology controlling and process, shorten the work-ing life of electrolyzer.Therefore the short circuit mouth voltage and the negative electrode of safety steadily heats up when guaranteeing groove; Just must between the short circuit mouth of electrolyzer, design part flow arrangement; So that at the beginning of short-circuit device is withdrawn, suitably shunt, after the complete fusion energising of burnt grain in the negative electrode; Remove part flow arrangement again, 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 got into 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 the electrolyzer practical situation, the medial temperature on operation slot top is not got 25 ℃ before the groove; Press the aluminum electrolysis process technological standard, electrolyzer total current surge voltage V is 5.5V.
Maximum diversion rate = 2
× 100%? = 2
× 100% (1)
Wherein: ρ
SteelBe the resistivity of making the used steel of part flow arrangement;
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 energising about 10 minutes, and the splitter temperature reaches more than 500 ℃, when bath voltage is stabilized in about the 3.5V gradually:
Minimum; (stablizing) streaming rate=2
* 100%=2
* 100%; (2)
Wherein: ρ
SteelBe the resistivity of making the used steel of part flow arrangement;
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 according to production technique to draw, and during calculating, often only calculate splitter and make required data.According to " middle aluminium Qinghai Branch 180kA cell technologies standard " requirement; In the electrolyzer galvanization, for guarantee 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 the design process of carrying out splitter, consider the installation site of splitter and the size of mounting face in addition, thereby carry out the selection of material size; Because the distance between pot line bus A, the B face is 1000 ㎜, be 1200 ㎜ for ease of the splitter Design of length is installed; The blast welding block width that the splitter two ends are used for the steel disc welding only has 180 ㎜, therefore chooses 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 for use, through experiment; The steel disc that 2 ㎜ are thick can meet the requirements, and through above promptly fixed condition, that is: splitter maximum shunt rate is 63%; Minimum streaming rate is 14%, and the length of splitter steel disc is chosen as 1200 ㎜, and width is 180 ㎜; Thickness is 2 ㎜; Calculate with formula (1), (2), drawing in every electrolyzer galvanization needs 2 groups of (the electrolyzer aluminium inlet is installed one group with flue end) identical splitters, and every group is welded by 6 onesize steel discs; Could satisfy the streaming request of electrolyzer in galvanization, promptly specially-shaped cathode electrolyzer 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 the 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 the 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 switch of closure, disconnection is set in the middle of the short-circuit;
3, during groove, part flow arrangement 18 is installed outside the two terminal shortcircuit mouths 19 under the operation slot groove, respectively in the outside and the installation of the aluminium inlet short circuit mouth outside of flue end short circuit mouth; Do not need short circuit mouth part flow arrangement under the mounting groove when stopping groove;
4, after short circuit equipment (needing short circuit mouth part flow arrangement under the mounting groove during groove) installation; Can closed short circuit equipment intermediary switch; Carry out the circuit short circuit; Make the electric current of flowing through on the operation slot seldom (electric current that operation slot is flowed through when stopping groove is less than 40KA, and the electric current that operation slot is flowed through during groove is less than 27KA);
5, measure short circuit mouth voltage, voltage is less than 0.8V when stopping groove, and voltage meets the requirements less than 0.6V during groove, carries out the operation of man-made short-circuit's mouth;
6, during groove, the outage plate between operation slot 16 oblique riser bus bars 1 and the short-circuit busbar 23 is inserted, insert insulation thimble 6, then that insulating bolt 5 is firm, the steel backing plate 6 that compresses is installed on top; When stopping groove, the outage plate between operation slot 16 oblique riser bus bars 1 and the short-circuit busbar 23 is extracted out, then short-circuit busbar and oblique riser bus bar are compressed with bolt 5, the steel backing plate 6 that compresses is installed on top, guarantees the energising of short circuit mouth low-resistance;
7, after the operation of short circuit mouth is accomplished, break off the short-circuit 17 between operation slot 16 and the downstream slot 20, electrolyzer is got into normally stop groove phase or normal roasting phase;
8, the 180KA two ends are advanced electricity and are not had a power failure and stop the groove operation and accomplish.
Claims (1)
1. two ends are advanced in the electricity inclined short circuit mouth electrolyzer and are not had a power failure and stop the groove method, and it is characterized in that: described method comprises the steps:
1), the 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 the 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 the 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 commutation switch (21) of closure, disconnection is set in the middle of the short-circuit (17);
3), during groove, part flow arrangement (18) is installed outside the two terminal shortcircuit mouths (19) under the operation slot groove, respectively in the outside and the installation of the aluminium inlet short circuit mouth outside of flue end short circuit mouth; Do not need short circuit mouth part flow arrangement under the mounting groove when stopping groove;
4), after the installation of short circuit equipment; Can closed short-circuit (17) intermediary commutation switch (21), carry out the circuit short circuit, make the electric current of flowing through on the operation slot seldom; The electric current that operation slot is flowed through when stopping groove is less than 40KA, and the electric current that operation slot is flowed through during groove is less than 27KA;
5), measure short circuit mouth voltage, voltage is less than 0.8V when stopping groove, voltage meets the requirements less than 0.6V during groove, carries out the operation of man-made short-circuit's mouth;
6), during groove, with operation slot (16) tiltedly riser bus bar (1) insert with outage plate (3) between the short-circuit busbar (2), insert insulation thimble (6), then that insulating bolt (5) is firm, the steel backing plate (6) that the top installation compresses; When stopping groove; Outage plate (3) between oblique riser bus bar (1) of operation slot (16) and the short-circuit busbar (2) is extracted out; Then short-circuit busbar and oblique riser bus bar are compressed with bolt (5), the steel backing plate (6) that compresses is installed on top, guarantees the energising of short circuit mouth low-resistance;
7), after short circuit mouth operation accomplishes, break off the short-circuit (17) between operation slot (16) and the downstream slot (20), electrolyzer is got into normally stop groove phase or normal roasting phase;
8), the 180KA two ends are advanced electricity and are not had a power failure and stop the groove operation and accomplish.
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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 |
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| CN109750318A (en) * | 2019-03-20 | 2019-05-14 | 中南大学 | A method of inhibiting aluminium electrolytic industry PFC discharge |
| CN114555867A (en) * | 2019-09-17 | 2022-05-27 | Amc公司 | Electrolysis tank power supply circuit comprising a short-circuit device and a circuit breaker |
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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 |
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| 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 |
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| CN109750318A (en) * | 2019-03-20 | 2019-05-14 | 中南大学 | A method of inhibiting aluminium electrolytic industry PFC discharge |
| CN109750318B (en) * | 2019-03-20 | 2020-11-03 | 中南大学 | Method for inhibiting PFC (Power factor correction) emission in aluminum electrolysis industry |
| CN114555867A (en) * | 2019-09-17 | 2022-05-27 | Amc公司 | Electrolysis tank power supply circuit comprising a short-circuit device and a circuit breaker |
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