CN202884205U - Pneumatic control system for stepless regulation of opening of water-sealed valve - Google Patents
Pneumatic control system for stepless regulation of opening of water-sealed valve Download PDFInfo
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- CN202884205U CN202884205U CN 201220594545 CN201220594545U CN202884205U CN 202884205 U CN202884205 U CN 202884205U CN 201220594545 CN201220594545 CN 201220594545 CN 201220594545 U CN201220594545 U CN 201220594545U CN 202884205 U CN202884205 U CN 202884205U
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Abstract
A pneumatic control system for stepless regulation of the opening of a water-sealed valve comprises an air compressor, a remote control system and a cylinder, wherein the cylinder is used for regulating the opening of the water-sealed valve. An air source output end of the air compressor is communicated with a gas input end of an air filter pressure reducing valve, a gas output end of the air filter pressure reducing valve is communicated with a gas input end of a positioner, the positioner is used for receiving an electric control signal of the remote control system and feeding back a cylinder position signal to the remote control system and is fixedly connected with the cylinder through a first support, a linear plate matched with an output shaft of the positioner is fixedly mounted on a piston rod of the cylinder through a second support, a gas output end of the positioner is connected with a gas input end of a locking valve, a gas output end of the locking valve is respectively connected with gas output ends of two throttling valves, and the gas output ends of the two throttling valves are communicated with a rod cavity and a rodless cavity of the cylinder respectively. The water-sealed valve can be automatically regulated and frequently and accurately controlled, and a device does not need to be replaced as process requirements are changed.
Description
Technical field
The utility model relates to the water-sealing valve technical field, specifically a kind of system that controls the water-sealing valve aperture.
Background technique
Water-sealing valve is applied on the pipeline of firepower power station backwater condenser system and oil, chemical industry requirement and isolated from atmosphere more, is used for cutting off or connecting medium; Applicable media is water, oil product, steam and non-corrosive gas.Water-sealing valve also has critical role in the coke oven gas gathering system, plays the effect of control raw coke oven gas flow area.
Present water-sealing valve adopts manpower to regulate mostly, and control accuracy is low, must change corresponding device when technological requirement changes.
The model utility content
The shortcoming that exists in order to overcome above-mentioned prior art, the purpose of this utility model is to provide a kind of water-sealing valve aperture step-less adjustment atmospheric control, realized the automatic adjusting to water-sealing valve, and can realize frequently, accurate control, not because of the technological requirement more exchange device that changes.
In order to address the above problem, the utility model by the following technical solutions: water-sealing valve aperture step-less adjustment atmospheric control comprises the air compressor that source of the gas is provided, the tele-control system with control function, regulates the cylinder of water-sealing valve aperture; The gas input end of the source of the gas output terminal of described air compressor and an air-filtering reduction valve connects, and the gas output end of this air-filtering reduction valve is communicated with the gas input end of a positioning work piece;
Described positioning work piece receives the light current control signal of described tele-control system, and to described tele-control system feedback cylinder location signal, described positioning work piece is fixedly connected with cylinder by the first support, is fixed with the linear plate that cooperates with the output shaft of described positioning work piece by the second support on the piston rod of described cylinder;
The gas output end of described positioning work piece connects the gas input end of lock valve, and the gas output end of described lock valve connects respectively two throttle valve gas output ends, and the gas output end of two throttle valve is communicated with rod chamber and the rodless cavity of described cylinder respectively.
The beneficial effects of the utility model are: water-sealing valve aperture step-less adjustment atmospheric control provided by the invention, realized automatic adjusting, and can realize frequently, control accurately, and control accuracy is high.Cylinder linear precision ± 1%F.S of the present invention in, come and go deviation ± 0.5%F.S in.The present invention can be suitable for different technological requirements, reaches desirable control effect.The present invention compared with the prior art, Location accuracy is high, without dead band, failure rate is low, keying rapidly, good airproof performance, simple to operate.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further:
Fig. 1 is the utility model embodiment's theory diagram;
Fig. 2 is the utility model embodiment's part-structure schematic representation;
Among the figure: 1 air compressor, 2 air-filtering reduction valve, 3 positioning work pieces, 4 tele-control systems, 5 lock valves, 6 throttle valve, 7 cylinders, 8 piston rods, 91 first supports, 92 second supports, 10 linear plates, 11 gas source pipes.
Embodiment
As shown in Figure 1 and Figure 2, this water-sealing valve aperture step-less adjustment atmospheric control mainly comprises the air compressor 1 that source of the gas is provided, the tele-control system 4 with control function, regulates the cylinder 7 of water-sealing valve aperture.
The gas input end of the source of the gas output terminal of air compressor 1 and an air-filtering reduction valve 2 connects, and the gas output end of this air-filtering reduction valve 2 is communicated with the gas input end of a positioning work piece 3.
The electric control signal of positioning work piece 3 receiving remote control system 4, and to tele-control system 4 feedback cylinder location signals.Positioning work piece 3 is fixedly connected with cylinder 7 by the first support 91.Be fixed with the linear plate 10 that cooperates with the output shaft 4 of positioning work piece 3 by the second support 92 on the piston rod 8 of cylinder 7.
The gas output end of positioning work piece 3 connects the gas input end of lock valve 5, and the gas output end of lock valve 5 connects respectively the gas output end of two throttle valve 6, and the gas output end of two throttle valve 6 is communicated with rod chamber and the rodless cavity of cylinder 7 respectively.
Source of the gas transmission between above-mentioned air compressor 1 and the air-filtering reduction valve 2, between air-filtering reduction valve 2 and the positioning work piece 3, between positioning work piece 3 and the lock valve 5, between lock valve 5 and the throttle valve 6, between the air chamber of throttle valve 6 and cylinder 7 realizes by gas source pipe 11 respectively.
During work, air compressor 1 provides source of the gas, gas through air-filtering reduction valve 2 carry out the bleed pressure adjustment and dewater, oil, dirt processes.The 4-20mA analog current control signal that positioning work piece 3 receiving remote control system 4 provide provides bleed pressure by air compressor 1.The output shaft 4 of positioning work piece 3 cooperates with linear plate 10, the amount of feed of the piston rod 8 of control cylinder 7.Positioning work piece 3 is according to given 4-20mA input signal, and the stroke of control cylinder 7, cylinder 7 move and drive the variation of water-sealing valve apertures.Linear plate 10 guarantees that cylinder 7 strokes and control signal are varied to linearity.In the cylinder operation process, the gait of march of the piston rod 8 of throttle valve 6 control cylinders 7.Cylinder 7 positions were fixed when lock valve 5 was guaranteed the air pressure deficiency.(for example＜0.3MPa) time, lock valve 5 automatic locking cylinders 7 are fixed on the former travel position it, avoid valve wide open or complete shut-down cause danger less than setting value when bleed pressure; (for example 〉=0.3MPa) time, lock valve 5 can automatically terminate lock-up cylinder 7 when bleed pressure rises to setting value.
Take the coke oven gas gathering system as example: after adopting this atmospheric control, before coalingging after coke pushing finishes, water-sealing valve is driven by cylinder 7 and is converted to full open position by buttoned-up status; Coalingging, it is rear to next coke pushing to finish, and water-sealing valve is driven by cylinder 7 and regulates in real time aperture; Water-sealing valve is driven by cylinder 7 and is converted to buttoned-up status by open mode before the coke pushing.Cylinder 7 moves according to the 4-20mA input electrical signal of being sent by the tele-control system that is positioned at the coke oven central control chamber, and positioning work piece 3 exports the position signal of cylinder 7 in the coke oven central control chamber tele-control system 4 in real time with electrical signal form (4-20mADC).Whole process, Location accuracy is high, and is rapid without dead band, failure rate is low, keying, good airproof performance, simple to operate.
The principle of other field is identical with it, gives unnecessary details no longer one by one.
Claims (1)
1. water-sealing valve aperture step-less adjustment atmospheric control is characterized in that, comprises the air compressor that source of the gas is provided, the tele-control system with control function, regulates the cylinder of water-sealing valve aperture; The gas input end of the source of the gas output terminal of described air compressor and an air-filtering reduction valve connects, and the gas output end of this air-filtering reduction valve is communicated with the gas input end of a positioning work piece;
Described positioning work piece receives the light current control signal of described tele-control system, and to described tele-control system feedback cylinder location signal, described positioning work piece is fixedly connected with cylinder by the first support, is fixed with the linear plate that cooperates with the output shaft of described positioning work piece by the second support on the piston rod of described cylinder;
The gas output end of described positioning work piece connects the gas input end of lock valve, and the gas output end of described lock valve connects respectively two throttle valve gas output ends, and the gas output end of two throttle valve is communicated with rod chamber and the rodless cavity of described cylinder respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220594545 CN202884205U (en) | 2012-11-13 | 2012-11-13 | Pneumatic control system for stepless regulation of opening of water-sealed valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220594545 CN202884205U (en) | 2012-11-13 | 2012-11-13 | Pneumatic control system for stepless regulation of opening of water-sealed valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202884205U true CN202884205U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220594545 Expired - Fee Related CN202884205U (en) | 2012-11-13 | 2012-11-13 | Pneumatic control system for stepless regulation of opening of water-sealed valve |
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| CN (1) | CN202884205U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927351A (en) * | 2012-11-13 | 2013-02-13 | 济南大学 | Stepless regulation pneumatic control system for opening degree of water-sealing valve |
| CN104089078A (en) * | 2014-07-16 | 2014-10-08 | 上海豪高机电科技有限公司 | Proportional control device used for linear-stroke valve |
-
2012
- 2012-11-13 CN CN 201220594545 patent/CN202884205U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927351A (en) * | 2012-11-13 | 2013-02-13 | 济南大学 | Stepless regulation pneumatic control system for opening degree of water-sealing valve |
| CN104089078A (en) * | 2014-07-16 | 2014-10-08 | 上海豪高机电科技有限公司 | Proportional control device used for linear-stroke valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20151113 |
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| EXPY | Termination of patent right or utility model |