CN102913665A - Gas-controlled marching type pressure regulation device - Google Patents
Gas-controlled marching type pressure regulation device Download PDFInfo
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- CN102913665A CN102913665A CN2012103918798A CN201210391879A CN102913665A CN 102913665 A CN102913665 A CN 102913665A CN 2012103918798 A CN2012103918798 A CN 2012103918798A CN 201210391879 A CN201210391879 A CN 201210391879A CN 102913665 A CN102913665 A CN 102913665A
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Abstract
The invention relates to a gas-controlled marching type pressure regulation device. A pressure regulation structure piece comprises a transition bracket, a pressure reduction valve body, a stepping motor, a coupler, a nut, a screw rod, a spring, a membrane and a pressure sensor, wherein the nut is used as a movable spring seat to compress and release the spring; the pressure applied by the spring on the membrane changes, so the membrane deforms, and the aperture of a gas inlet changes with the change of the membrane; closed loop control is implemented inside a system, a gas pressure setting value is set by an industrial personal computer and then is compared and calculated with an actual detection valve acquired by the pressure sensor, after a result is obtained, the industrial personal computer outputs a pulse signal to control the stepping motor to carry out regulation, so as to regulate the aperture of the valve opening; the device can be communicated with an RS232 interface with high stability, can be accessed into the internet, the software adopts a MODBUS-RTU protocol, the data transmission is stable, the generality is good, remote control is carried out, the regulation accuracy is high, the industrial personal computer acquires signals, calculates and compares the results, and then regulates at any time according to the real-time change of gas pressure.
Description
Technical field
The present invention relates to hydropneumatic control apparatus field, particularly a kind of gas control step-by-step movement regulator, it widely applies chemical metallurgy device.
Background technique
At present, existing gas control regulator structure, comprise the adjustment handle, pressure adjusting spring, lower spring cup, diaphragm, spool, valve pocket, damping hole and Returnning spring, when clockwise direction is adjusted handle, pressure adjusting spring promotes lower spring cup, diaphragm, and spool, move down, valve port is opened, and air-flow is by pressure decreased behind the valve port, from right side output secondary pressure gas, meanwhile, some air-flow enters diaphragm chamber by damping hole, produces a thrust that makes progress and spring force balance under diaphragm, and pressure regulator valve just has stable Output pressure, when incoming pressure P1 increases, delivery pressure P2 also increases thereupon, and the pressure under the diaphragm is also increased, and diaphragm is upwards pushed away, spool moves under the effect of Returnning spring, thereby the aperture of valve port is reduced, and throttling action strengthens, and delivery pressure is reduced to till the setting; Otherwise if incoming pressure descends, then delivery pressure also descends thereupon, and diaphragm moves down, aperture increases on the valve, and throttling action reduces, and makes delivery pressure go back up to set pressure, to keep pressure stability, regulating handle can be controlled the size of valve port opening, can control the size of delivery pressure.
The device context of modern metallurgical and chemical industry is relatively disperseed mostly, and away from control centre, therefore, need to realize remote adjustment in unattended situation.And existing gas control regulator is manual voltage regulation, and voltage regulating mode is manual control, thereby can only operate in device context, the condition that does not possess remote adjustment, therefore be necessary to overcome the defective of prior art by voltage regulating mode and device structure are improved, realize remote adjustment.
Summary of the invention
Purpose of the present invention is exactly for overcoming the deficiencies in the prior art, for a long-range gas control pressure regulation difficult problem, provide a kind of voltage regulating mode and device structure are carried out improvement project, in the closed loop control of the inner composition of device systems, the air pressure setting value is set, compares calculating with the actual checkout value of pressure transducer collection by process control machine, draw less than or greater than the result after, process control machine output pulse signal control step motor is regulated, and then realizes the adjusting to the aperture of valve port.
The present invention realizes by such technological scheme: gas control step-by-step movement regulator, by pressure adjusting structure spare and composition of the control system, it is characterized in that, pressure adjusting structure spare comprises excessive support, reducing valve body, stepper motor, coupling, screw rod mother, leading screw, spring, diaphragm and pressure transducer;
Excessively support claims body as the intermediate support that connects reducing valve body, stepper motor, as the part of step voltage regulation assembly, its bottom processes opening slot simultaneously, and top is the plane, the upper plane center is processed with the hexagonal hole of placing nut, and hexagonal hole and opening slot are penetrating;
Reducing valve body is installed in above the excessive support, the pressure gauge connection setting pressure sensor in center portion above the reducing valve body, and the inner fixedly diaphragm of the valve pocket of reducing valve body, the bi-side of reducing valve body are respectively equipped with gas access and gas outlet; Gas access, gas outlet communicate with the valve pocket inside of reducing valve body;
Coupling is installed in the opening slot, and the coupling lower end is connected with the motor shaft of stepper motor, and stepper motor is installed in below the excessive support;
The upper end of coupling connects leading screw, and the leading screw lower end is processed as the four sides and cuts flat square cylinder, and the upper end of square cylinder is followed successively by limit dais and leading screw main body;
The square cylinder of leading screw and limit dais mounting point be in opening slot one side, and the leading screw main body is then passed hexagonal hole and extended on the excessive support beyond the plane;
The leading screw main body of leading screw and screw rod are female to be cooperated, make the screw rod mother who is spun on the leading screw main body be positioned at the hexagonal hole of excessive support, the pilot hole that hexagonal hole moves up and down as the screw rod mother, its inwall and screw rod mother's outer wall is slidingly matched, and the stroke range that the screw rod mother moves up and down in hexagonal hole 11 is 10 millimeters～40 millimeters;
The leading screw main body of leading screw is extended pocketed springs on the part beyond the plane on the excessive support, and the upper end of spring contacts with diaphragm, and the lower end withstands on the screw rod mother and goes up the plane, with it as the movable spring seat;
Leading screw rotates with stepper motor; The screw rod mother moves up and down in the hexagonal hole of transition bracket inside, acts on pressure on the spring and moves up and down along with the screw rod mother and change, and the screw rod mother is used for compression and retracting spring as the movable spring seat;
Change with the pressure on the spring, the pressure of spring action on diaphragm changes thereupon, makes diaphragm generation deformation, and the aperture of gas access changes with the deformation of diaphragm; And then gas throughput changes;
Described control system comprises process control machine, FD5-3 five phase step motor drive controller and 24V direct-current switch power supply; Wherein, the built-in CK0080R data acquisition interface of process control machine card, FD5-3 five phase step motor drive controller and 24V direct-current switch power supply are installed in the electric control box;
Provide the DC24V power supply by switch power for pressure transducer, be sent to process control machine from the current signal of pressure transducer collection 4～20mA by CK0080R data acquisition interface card, the in-built software of process control machine comprises that atmospheric pressure value setting module, numeric ratio are than computing module, pulse control signal output module;
By the atmospheric pressure value setting module air pressure setting value is set;
Than computing module the actual checkout value of air pressure setting value and pressure transducer collection is compared calculating by numeric ratio;
Relatively calculate less than or result greater than setting value after, again by pulse control signal output module output control signal, pulse control signal is exported to FD5-3 five phase step motor drive controller, by FD5-3 five phase step motor drive controller control step motor action, to the adjusting of the aperture of gas access, and then realize gas control.
The invention has the beneficial effects as follows: voltage regulating mode and device structure are improved, internal system realizes closed loop control, by process control machine the air pressure setting value is set, compare calculating with the actual checkout value of pressure transducer collection, draw less than or greater than the result after, process control machine output pulse signal control step motor is regulated, and then realization is to the adjusting of the aperture of valve port, device can sharp RS232 interface communication, and stability is high, can network, software adopts the MODBUS-RTU agreement, data transmission is stable, and is universal good, telecontrol, degree of regulation is high, and the process control machine collection signal is regulated according to the real-time change of air pressure at any time by the computing comparison.
Description of drawings
Fig. 1, gas control step-by-step movement regulator structural drawing;
Fig. 2, pressure adjusting structure spare explosive view A;
Fig. 3, pressure adjusting structure spare explosive view B;
Fig. 4, pressure adjusting structure spare explosive view C;
Fig. 5, pressure adjusting structure spare explosive view D;
Fig. 6, pressure adjusting structure spare plan view;
Fig. 7, pressure adjusting structure spare plan view;
Fig. 8, pressure adjusting structure spare side view.
Among the figure: 1. excessive support, 2. reducing valve body, 3. stepper motor, 4. coupling, 5. screw rod is female, 6. leading screw, 7. spring, 8. diaphragm, 9. pressure transducer, 10. bolt, 11 hexagonal holes, 21. gas accesses, 22. gas outlets; 31. motor shaft, 61. cubic cylinders, 62. position-arresting disks, 63. leading screw bodies;
Embodiment
For a more clear understanding of the present invention, describe in conjunction with the accompanying drawings and embodiments the present invention in detail:
Shown in Fig. 1-8, gas control step-by-step movement regulator, by pressure adjusting structure spare and composition of the control system, pressure adjusting structure spare comprises excessive support 1, reducing valve body 2, stepper motor 3, coupling 4, screw rod mother 5, leading screw 6, spring 7, diaphragm 8 and pressure transducer 9;
Excessively support 1 claims body as the intermediate support that connects reducing valve body 2, stepper motor 3, as the part of step voltage regulation assembly, its bottom processes opening slot 12 simultaneously, and top is the plane, the upper plane center is processed with the hexagonal hole 11 of placing nut, and hexagonal hole 11 is penetrating with opening slot 12;
Reducing valve body 2 is installed in above the excessive support 1, the pressure gauge connection setting pressure sensor 9 in center portion above the reducing valve body 2, and the inner fixedly diaphragm 8 of the valve pocket of reducing valve body 2, the bi-side of reducing valve body 2 are respectively equipped with gas access 21 and gas outlet 22; Gas access 21, gas outlet 22 communicate with the valve pocket inside of reducing valve body 2;
The upper end of coupling 4 connects leading screw 6, and leading screw 6 lower ends are processed as the four sides and cut flat square cylinder 61, and the upper end of square cylinder 61 is followed successively by limit dais 62 and leading screw main body 63;
The square cylinder 61 of leading screw 6 and limit dais 62 mounting points are in opening slot 12 1 sides, and 63 of leading screw main bodys are passed hexagonal hole 11 and extended on the excessive support 1 beyond the plane;
Leading screw main body 63 and screw rod female 5 cooperates, make the screw rod mother 5 who is spun on the leading screw main body 63 be positioned at the hexagonal hole 11 of excessive support 1, the pilot hole that hexagonal hole 11 moves up and down as screw rod mother 5, its inwall and screw rod mother's 5 outer wall is slidingly matched, and the stroke range that screw rod mother 5 moves up and down in hexagonal hole 11 is 10 millimeters～40 millimeters.The most frequently used to stroke be 25 millimeters.
The leading screw main body 63 of leading screw 6 is extended pocketed springs 7 on the part beyond the plane on the excessive support 1, and the upper end of spring 7 contacts with diaphragm 8, and the lower end withstands on plane on the screw rod mother 5, with it as the movable spring seat;
Leading screw 6 rotates with stepper motor; Screw rod mother 5 moves up and down in the hexagonal hole of transition bracket inside, acts on pressure on the spring 7 and moves up and down along with screw rod mother 5 and change, and screw rod mother 5 is used for compression and retracting spring as the movable spring seat;
Change with the pressure on the spring 7, the pressure that spring 7 acts on the diaphragm 8 changes thereupon, makes diaphragm 8 that deformation occur, and the aperture of gas access 21 changes with the deformation of diaphragm 8; And then gas throughput changes;
After the device inner body assembled, with excessive support 1, reducing valve body 2 and stepper motor 3 were fastening by bolt 10;
Control system comprises process control machine, FD5-3 five phase step motor drive controller and 24V direct-current switch power supply; Wherein, the built-in CK0080R data acquisition interface of process control machine card, FD5-3 five phase step motor drive controller and 24V direct-current switch power supply are installed in the electric control box;
Provide the DC24V power supply by switch power for pressure transducer 9, the current signal that gathers 4-20mA from pressure transducer 9 is sent to process control machine by CK0080R data acquisition interface card, and the in-built software of process control machine comprises that atmospheric pressure value setting module, numeric ratio are than computing module, pulse control signal output module;
By the atmospheric pressure value setting module air pressure setting value is set;
Than computing module the actual checkout value of air pressure setting value and pressure transducer collection is compared calculating by numeric ratio;
Relatively calculate less than or result greater than setting value after, again by pulse control signal output module output control signal, pulse control signal is exported to FD5-3 five phase step motor drive controller, move by FD5-3 five phase step motor drive controller control step motor 3, to the adjusting of the aperture of gas access 21, and then realize gas control.
This device is at accurate voltage regulating device diaphragm supported spring leading screw adjustable side addition five phase composite stepper motors, and stepping angle is 0.72 degree; Adopt the FD5-3 Five Phase Step Motor Driver, this driver adopts advanced switch power as the control power supply, and drive circuit adopts extensive programmable chip to carry out the frequency and voltage boosting control mode; have under-voltage; overvoltage, overcurrent protection function, input signal and Transistor-Transistor Logic level are compatible; built-in light-coupled isolation; power-failure memory operates steadily, and vibrates little; reliability is high, the five-wire system mode of connection.
It is the digital display pressure transducer of 4-20mA that the pressure gauge connection of device is installed analog signals; The built-in CK0080R data acquisition interface of long-range process control machine card, the current signal of pick-up transducers, embedded software reading current calculated signals goes out force value and is presented on the process control machine picture.That CK0080R data acquisition interface jig has is applied widely, multiple functional, good stability, price performance high.Can be widely used in industrial process control system and laboratory data acquisition system.The RS232 interface is adopted in communication, and stability is high, remote controlled, can network.Software adopts the MODBUS-RTU agreement, and data transmission is stable, and is universal good.Use the screw-type tenminal block, easy to connect and solid and reliable.
Feature:
1) 8 road analog inputs, the 10bitADC precision, transfer speed 250K/S can gather 4-20mA electric current, 0-5V, 0-10V, 0-15V, 0-20V, 0-30V voltage, is applicable to most industry sensor and transmitter, and antijamming capability is strong.Have over-voltage over-current protection, under the 0-5V voltage mode, can the voltage of anti-24V, have RC filtering.
2) RS232 communication interface, 232 chips of employing imported with original packaging, integrated TVS pipe can prevent 600W lightning surge electric current on the plank.
3) communication can software change of address more, change baud rate, and have hardware recovery Default Value function.
4) adopt the technical grade high speed microprocessor, speed is fast and stable, and inner house dog is arranged, and prevents from crashing and program fleet.
5) adopt the MODBUS-RTU agreement, applied widely, be easy to and other equipment networkings, adopt CRC check, prevent that data from makeing mistakes, have automatic processing bad command function, solve the misoperation problem fully.
6) 12V-24V wide-range power voltage input has reverse connecting protection.
7) for improving stability, a lot of protections and jamproof measure have been done respectively from the hardware and software aspect.The software aspect, optimizer has been done the test of careful complexity, with any baud rate, sends continuously random code or bad command ten minutes, any nothing operation do not occur, and after stopping to send, sends immediately correct the order, and work is fully normal!
8) in order to encrypt, have the sequence number of unique 7 bytes can not changing as the unique identification of capture card, there is the storage space of 16 bytes to read and write, power down is not lost, and is used for storing simple information.
The teleworker can the manually-operable stepper motor clockwise and anticlockwise and the pulse signal of stepping accurately control pressure regulation.Also can export corresponding pulse signal through the magnitude relationship of process control machine computing setting value and checkout value carries out automatically regulating in real time.
According to the above description, can realize the solution of the present invention in conjunction with art technology.
Claims (1)
1. gas control step-by-step movement regulator, by pressure adjusting structure spare and composition of the control system, it is characterized in that, pressure adjusting structure spare comprises excessive support (1), reducing valve body (2), stepper motor (3), coupling (4), screw rod female (5), leading screw (6), spring (7), diaphragm (8) and pressure transducer (9);
Excessively support (1) claims body as the intermediate support that connects reducing valve body (2), stepper motor (3), while is as the part of step voltage regulation assembly, its bottom processing opening slot (12), top is the plane, the upper plane center is processed with the hexagonal hole (11) of placing nut, and hexagonal hole (11) is penetrating with opening slot (12);
Reducing valve body (2) is installed in above the excessive support (1), the pressure gauge connection setting pressure sensor (9) in center portion above the reducing valve body (2), the inner fixedly diaphragm (8) of the valve pocket of reducing valve body (2), the bi-side of reducing valve body (2) are respectively equipped with gas access (21) and gas outlet (22); Gas access (21), gas outlet (22) communicate with the valve pocket inside of reducing valve body (2);
Coupling (4) is installed in the opening slot (12), and coupling (4) lower end is connected with the motor shaft (31) of stepper motor (3), and stepper motor (3) is installed in below the excessive support (1);
The upper end of coupling (4) connects leading screw (6), and leading screw (6) lower end is processed as the four sides and cuts flat square cylinder (61), and the upper end of square cylinder (61) is followed successively by limit dais (62) and leading screw main body (63);
The square cylinder (61) of leading screw (6) and limit dais (62) mounting point are in opening slot (12) one sides, and leading screw main body (63) is then passed hexagonal hole (11) and extended to beyond the upper plane of excessive support (1);
The leading screw main body (63) of leading screw (6) and screw rod female (5) cooperate, make the screw rod female (5) that is spun on the leading screw main body (63) be positioned at the hexagonal hole (11) of excessive support (1), the pilot hole that hexagonal hole (11) moves up and down as screw rod female (5), the outer wall of its inwall and screw rod female (5) is slidingly matched, and the stroke range that screw rod female (5) moves up and down in hexagonal hole (11) is 10 millimeters～40 millimeters;
The leading screw main body (63) of leading screw (6) is extended pocketed springs (7) on the part beyond the upper plane of excessive support (1), and the upper end of spring (7) contacts with diaphragm (8), and the lower end withstands on plane on the screw rod mother (5), with it as the movable spring seat;
Leading screw (6) rotates with stepper motor (3); Screw rod female (5) moves up and down in the hexagonal hole of transition bracket inside, acts on pressure on the spring (7) and moves up and down along with screw rod female (5) and change, and screw rod female (5) is used for compression and retracting spring as the movable spring seat;
Change with the pressure on the spring (7), the pressure that spring (7) acts on the diaphragm (8) changes thereupon, makes diaphragm (8) that deformation occur, and the aperture of gas access (21) changes with the deformation of diaphragm (8); And then gas throughput changes;
Described control system comprises process control machine, FD5-3 five phase step motor drive controller and 24V direct-current switch power supply; Wherein, the built-in CK0080R data acquisition interface of process control machine card, FD5-3 five phase step motor drive controller and 24V direct-current switch power supply are installed in the electric control box;
Be that pressure transducer (9) provides the DC24V power supply by switch power, the current signal that gathers 4-20mA from pressure transducer (9) is sent to process control machine by CK0080R data acquisition interface card, and the in-built software of process control machine comprises that atmospheric pressure value setting module, numeric ratio are than computing module, pulse control signal output module;
By the atmospheric pressure value setting module air pressure setting value is set;
Than computing module the actual checkout value of air pressure setting value and pressure transducer collection is compared calculating by numeric ratio;
Relatively calculate less than or result greater than setting value after, again by pulse control signal output module output control signal, pulse control signal is exported to FD5-3 five phase step motor drive controller, move by FD5-3 five phase step motor drive controller control step motor (3), to the adjusting of the aperture of gas access (21), and then realize gas control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210391879 CN102913665B (en) | 2012-10-16 | 2012-10-16 | Gas-controlled marching type pressure regulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210391879 CN102913665B (en) | 2012-10-16 | 2012-10-16 | Gas-controlled marching type pressure regulation device |
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| Publication Number | Publication Date |
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| CN102913665A true CN102913665A (en) | 2013-02-06 |
| CN102913665B CN102913665B (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210391879 Expired - Fee Related CN102913665B (en) | 2012-10-16 | 2012-10-16 | Gas-controlled marching type pressure regulation device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746783A (en) * | 2013-11-29 | 2014-04-23 | 国电南瑞科技股份有限公司 | Extended communication method based on Modbus communication protocol |
| CN110173568A (en) * | 2019-05-27 | 2019-08-27 | 衢州市沃德仪器有限公司 | Miniature automatic regulating valve |
| CN112032380A (en) * | 2020-08-25 | 2020-12-04 | 中车青岛四方车辆研究所有限公司 | Pressure reducing device and closed-loop control method for pressure output regulation of pressure reducing device |
| CN112505212A (en) * | 2020-12-11 | 2021-03-16 | 江苏汇环环保科技有限公司 | Pressure control device suitable for online gas chromatograph |
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| US4006785A (en) * | 1974-12-19 | 1977-02-08 | Robert Bosch G.M.B.H. | Power tool |
| JP2006142199A (en) * | 2004-11-19 | 2006-06-08 | Nitto Denko Corp | Ventilation filter medium and ventilation enclosure using it |
| CN201514297U (en) * | 2009-06-24 | 2010-06-23 | 西北工业大学 | Test set for friction force dynamic process |
| CN202867989U (en) * | 2012-10-16 | 2013-04-10 | 天津德同液压技术有限公司 | Pneumatic control stepping type pressure regulating device |
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2012
- 2012-10-16 CN CN 201210391879 patent/CN102913665B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4006785A (en) * | 1974-12-19 | 1977-02-08 | Robert Bosch G.M.B.H. | Power tool |
| JP2006142199A (en) * | 2004-11-19 | 2006-06-08 | Nitto Denko Corp | Ventilation filter medium and ventilation enclosure using it |
| CN201514297U (en) * | 2009-06-24 | 2010-06-23 | 西北工业大学 | Test set for friction force dynamic process |
| CN202867989U (en) * | 2012-10-16 | 2013-04-10 | 天津德同液压技术有限公司 | Pneumatic control stepping type pressure regulating device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746783A (en) * | 2013-11-29 | 2014-04-23 | 国电南瑞科技股份有限公司 | Extended communication method based on Modbus communication protocol |
| CN110173568A (en) * | 2019-05-27 | 2019-08-27 | 衢州市沃德仪器有限公司 | Miniature automatic regulating valve |
| CN110173568B (en) * | 2019-05-27 | 2024-03-15 | 衢州市沃德仪器有限公司 | Miniature automatic regulating valve |
| CN112032380A (en) * | 2020-08-25 | 2020-12-04 | 中车青岛四方车辆研究所有限公司 | Pressure reducing device and closed-loop control method for pressure output regulation of pressure reducing device |
| CN112505212A (en) * | 2020-12-11 | 2021-03-16 | 江苏汇环环保科技有限公司 | Pressure control device suitable for online gas chromatograph |
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| CN102913665B (en) | 2013-12-25 |
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