CN202629291U - Air-control membrane-type high-pressure large-flow reducing valve outlet pressure control system - Google Patents
Air-control membrane-type high-pressure large-flow reducing valve outlet pressure control system Download PDFInfo
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- CN202629291U CN202629291U CN 201220295611 CN201220295611U CN202629291U CN 202629291 U CN202629291 U CN 202629291U CN 201220295611 CN201220295611 CN 201220295611 CN 201220295611 U CN201220295611 U CN 201220295611U CN 202629291 U CN202629291 U CN 202629291U
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Abstract
An air-control membrane-type high-pressure large-flow reducing valve outlet pressure control system comprises a box body, a pressure transmitter, a central control unit, a first electromagnetic air-release valve and a first erection joint, wherein the central control unit, the first electromagnetic air-release valve and the first erection joint are arranged on the box body. A first restriction orifice is arranged on the first erection joint. The pressure transmitter is connected with a pipeline which is connected and communicated with an outlet end of a low-pressure cavity of an air-control membrane-type high-pressure large-flow reducing valve. One end of the first electromagnetic air-release valve is connected and communicated with a control cavity of the air-control membrane-type high-pressure large-flow reducing valve, and the other end of the first electromagnetic air-release valve is connected and communicated with the first erection joint. The central control unit is connected with the pressure transmitter and the first electromagnetic air-release valve respectively. The air-control membrane-type high-pressure large-flow reducing valve outlet pressure control system has the advantages of being capable of not only improving output pressure precision of the air-control membrane-type high-pressure large-flow reducing valve, but also effectively ensuring safety of the air-control membrane-type high-pressure large-flow reducing valve and working pipelines.
Description
Technical field
The utility model relates to a kind of hydrodynamic pressure control system, specifically is a kind of gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system.
Background technique
Existing gas control diaphragm type high-pressure high-flow reduction valve, as shown in Figure 1, it generally comprises valve body 1 ', valve 2 ', spring 3 ' and is connected the valve gap 4 ' on the valve body 1 '; Valve body 1 ' is provided with hyperbaric chamber 5 ', low pressure chamber 6 ' and control chamber 7 '; Hyperbaric chamber 5 ' entrance point is used for being connected with gas cylinder and communicates, and low pressure chamber 6 ' outlet end is used for being connected with working line and communicates, and hyperbaric chamber 5 ' outlet end is connected through through hole 8 ' with low pressure chamber 6 ' entrance point and communicates; Control chamber 7 ' entrance point is used for being connected and communicating with the control source of the gas; Be provided with valve hole 9 ' with the valve body 1 ' of valve gap 4 ' corresponding part, valve 2 ' is positioned at valve hole 9 ', and its lower end withstands on through hole 8 ' upper end; Spring 3 ' withstands between valve 2 ' and the valve gap 4 '; Low pressure chamber 6 ' is separated by diaphragm 10 ' with control chamber 7 ', is connected with push rod 11 ' on the diaphragm 10 ', and push rod 11 ' upper end is passed through hole 8 ' and withstood on valve 2 ' lower end.The working principle of this gas control diaphragm type high-pressure high-flow reduction valve is: after the high pressure air p1 in the gas cylinder gets into hyperbaric chamber ' 5; Open and connect the reduction valve 12 ' and stop valve 13 ' that communicates on pipeline between control source of the gas and the control chamber 7 ' entrance point; Control gas pk' is entered in the control chamber 7 '; Diaphragm 10 ' can move upward down in control gas pk ' effect, and drive push rod 11 ' moves upward and back down valve 2 ', at this moment; High pressure air p1 ' will enter in the low pressure chamber 6 ' by via through holes 8 '; And under the throttling action of valve 2 ', become low pressure gas p2 ', make the gas pressure of low pressure gas p2 ' reach predetermined value, close stop valve 13 ' then through regulating reduction valve 12 '; Make control gas pk ' keep constant, low pressure gas p2 ' then through with low pressure chamber 6 ' outlet end is connected the electric ball valve 14 ' that communicates back confession working line use.There are following two deficiencys in the gas control diaphragm type high-pressure high-flow reduction valve of said structure in actual application: 1, provided by gas cylinder owing to high pressure air p1 '; Therefore; When continuing to use, the gas pressure of high pressure air p1 ' will constantly descend, and this can cause the gas pressure of low pressure gas p2 ' to rise gradually; The actual monitoring data show; The gas pressure climbing of low pressure gas p2 ' surpasses 5%, that is to say that the delivery pressure precision of the gas control diaphragm type high-pressure high-flow reduction valve of said structure is relatively poor; 2, because valve 2 ' can cause its sealability reduction because of wearing and tearing inevitably in long-term using process; Therefore; (gas control diaphragm type high-pressure high-flow reduction valve quits work when gas control diaphragm type high-pressure high-flow reduction valve is in holding state; Working line is closed and gas cylinder is not closed, and waits for the state at intermittence of next time working), this moment, valve 2 ' should be closed; But because valve 2 ' sealability reduces; Therefore high pressure air p1 ' still can enter in the low pressure chamber 6 ' through the valve 2 ' and the via through holes 8 ' of wearing and tearing, and the gas pressure of low pressure gas p2 ' is constantly risen, thereby brings potential safety hazard for gas control diaphragm type high-pressure high-flow reduction valve and working line.
The model utility content
The technical problem that the utility model will solve is; A kind of delivery pressure precision that not only can improve gas control diaphragm type high-pressure high-flow reduction valve is provided, and can effectively guarantees the gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system of gas control diaphragm type high-pressure high-flow reduction valve and working line safety.
For solving the problems of the technologies described above; The utility model provides a kind of gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system of following structure: comprise casing, pressure transmitter and be arranged on central unit, first electromagnetic release valve and first erection joint on the casing; First restriction orifice is installed in first erection joint; Pressure transmitter is connected with the low pressure chamber outlet end of gas control diaphragm type high-pressure high-flow reduction valve and is connected on the pipeline that communicates; First electromagnetic release valve, one end is used for being connected with the control chamber of gas control diaphragm type high-pressure high-flow reduction valve and communicates; Its other end is connected with first erection joint and communicates, and central unit is electrically connected with the pressure transmitter and first electromagnetic release valve respectively.
The described gas control diaphragm type of the utility model high-pressure high-flow reduction valve outlet pressure control system; Wherein, Central unit comprises PLC programming controller, mould/number conversion module, stabilized power supply, first auxiliary reclay, the 3rd auxiliary reclay and touch screen; Mould/number conversion module and touch screen all are electrically connected with the PLC programming controller; Stabilized power supply is electrically connected with the touch screen and first electromagnetic release valve simultaneously, and first auxiliary reclay is connected electrically between first electromagnetic release valve and the PLC programming controller, and the 3rd auxiliary reclay one end is electrically connected with the PLC programming controller; Its other end is used for being connected the electric ball valve that communicates with the low pressure chamber outlet end and is electrically connected, and pressure transmitter is electrically connected with mould/number conversion module.
The described gas control diaphragm type of the utility model high-pressure high-flow reduction valve outlet pressure control system; Wherein, Reduction valve outlet pressure control system also comprises second electromagnetic release valve and second erection joint, and second erection joint is equipped with second restriction orifice, and second electromagnetic release valve, one end is used for being connected with the low pressure chamber of gas control diaphragm type high-pressure high-flow reduction valve and communicates; Its other end is connected with second erection joint and communicates; Central unit also comprises second auxiliary reclay, and second electromagnetic release valve is electrically connected with stabilized power supply, and second auxiliary reclay is connected electrically between second electromagnetic release valve and the PLC programming controller.
After adopting said structure, compared with prior art, the utlity model has following advantage: when need use gas control diaphragm type high-pressure high-flow reduction valve; The staff can monitor the gas pressure value of low pressure gas p2 through pressure transmitter in real time, and this gas pressure value is reached central unit, when actual measurement low pressure gas p2 gas pressure value is excessive; Central unit can be opened first electromagnetic release valve; Control gas pk in the control chamber can be discharged from first restriction orifice through first electromagnetic release valve gradually, and low pressure gas p2 gas pressure also will decrease along with control gas pk gas pressure reduces this moment; When actual measurement low pressure gas p2 gas pressure value is too small; Central unit can cut out first electromagnetic release valve, and the gas pressure value of control gas pk will stop to descend, and the gas pressure value of low pressure gas p2 also will stop to descend; And rise gradually once more, so repeatedly.By on can know; Accurately control is within the specific limits for the gas pressure of low pressure gas p2 when the utility model gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system is can be with gas control diaphragm type high-pressure high-flow reduction valve in running order; Eliminated the drawback that the gas pressure of low pressure gas p2 can constantly raise as time passes, thereby guaranteed that low pressure gas p2 can be accurately reposefully to the working line air feed.
The effect that the utility model gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system is provided with second electromagnetic release valve, second erection joint and second restriction orifice is: when gas control diaphragm type high-pressure high-flow reduction valve is in holding state; The staff also can monitor the gas pressure value of low pressure gas p2 through pressure transmitter in real time; And this gas pressure value reached central unit; When actual measurement low pressure gas p2 gas pressure value was excessive, central unit can be opened second electromagnetic release valve, and the low pressure gas p2 in the low pressure chamber can be discharged from second restriction orifice through second electromagnetic release valve gradually; The gas pressure value of low pressure gas p2 will descend thereupon; When actual measurement low pressure gas p2 gas pressure value was too small, central unit can cut out second electromagnetic release valve, and the gas pressure value of low pressure gas p2 will stop to descend; And rise gradually once more, so repeatedly.By on can know; The gas pressure of low pressure gas p2 when the utility model gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system can also be in holding state with gas control diaphragm type high-pressure high-flow reduction valve is accurately controlled within the specific limits; Eliminate the drawback that the gas pressure of low pressure gas p2 can constantly raise as time passes, thereby guaranteed the safety of gas control diaphragm type high-pressure high-flow reduction valve and working line.
Description of drawings
Fig. 1 is the sectional structure schematic representation of existing technology gas control diaphragm type high-pressure high-flow reduction valve;
Fig. 2 is the structural principle schematic representation of the utility model gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system when being connected with gas control diaphragm type high-pressure high-flow reduction valve;
Fig. 3 is the electric control theory skeleton diagram of central unit in the utility model gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system is done further to specify.
As shown in Figures 2 and 3; In this embodiment; The utility model gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system comprises casing 7, pressure transmitter 9 and is arranged on central unit 8 on the casing 7, first electromagnetic release valve 10, second electromagnetic release valve 13, pressure gauge 23, first erection joint 11 and second erection joint 14; First restriction orifice 12 is installed in first erection joint 11; Second restriction orifice 15 is installed in second erection joint 14; Pressure transmitter 9 is connected with low pressure chamber 2 outlet end of gas control diaphragm type high-pressure high-flow reduction valve and is connected on the pipeline that communicates; First electromagnetic release valve, 10 1 ends are connected with the control chamber 3 of gas control diaphragm type high-pressure high-flow reduction valve and communicate through being arranged on first passage 4 on the valve body 1; Its other end is connected with first erection joint 11 and communicates; Pressure gauge 23 connections communicate on the pipeline between first electromagnetic release valve 10 and the first passage 4; The purpose that pressure gauge 23 is set is the real-time gas pressure value that the staff can know the control gas pk in the control chamber 3, and second electromagnetic release valve, 13 1 ends are connected with the low pressure chamber 2 of gas control diaphragm type high-pressure high-flow reduction valve and communicate through being arranged on second channel 5 on the valve body 1, and its other end is connected with second erection joint 14 and communicates; Central unit 8 comprises PLC programming controller 16, mould/number conversion module 17, stabilized power supply 19, first auxiliary reclay 20, second auxiliary reclay 22, the 3rd auxiliary reclay 21 and touch screen 18; Mould/number conversion module 17 and touch screen 18 all are electrically connected with PLC programming controller 16, and stabilized power supply 19 is electrically connected with touch screen 18, first electromagnetic release valve 10 and second electromagnetic release valve 13 simultaneously, and first auxiliary reclay 20 is connected electrically between first electromagnetic release valve 10 and the PLC programming controller 16; Second auxiliary reclay 22 is connected electrically between second electromagnetic release valve 13 and the PLC programming controller 16; The 3rd auxiliary reclay 21 1 ends are electrically connected with PLC programming controller 16, and its other end is used for being connected the electric ball valve 6 that communicates with low pressure chamber 2 outlet end and is electrically connected, and pressure transmitter 9 is electrically connected with mould/number conversion module 17.
The working principle of the utility model gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system is: when need use gas control diaphragm type high-pressure high-flow reduction valve; Open stabilized power supply 19 earlier; Make touch screen 18 in running order, gas pressure CLV ceiling limit value p2max1 and the lower limit p2min1 of gas control diaphragm type high-pressure high-flow reduction valve low pressure gas p2 when in running order is set through touch screen 18 then, then open electric ball valve 6; Low pressure gas p2 begins to the working line air feed; Electric ball valve 6 can pass to PLC programming controller 16 through the 3rd auxiliary reclay 21 with start signal simultaneously, PLC programming controller 16 is moved automatically, at this moment; Connecting the pressure transmitter 9 that communicates on low pressure chamber 2 outlet end pipelines begins the gas pressure value of low pressure gas p2 is monitored in real time; And this gas pressure value reached in the PLC programming controller 16 through mould/number conversion module 17, compare with CLV ceiling limit value p2max1 and lower limit p2min1, when actual measurement low pressure gas p2 gas pressure value equals CLV ceiling limit value p2max1; PLC programming controller 16 is opened first electromagnetic release valve 10 through first auxiliary reclay 20; Control gas pk in the control chamber 3 can be discharged from first restriction orifice 12 through first electromagnetic release valve 10 gradually, and along with the gas pressure value of controlling gas pk descends gradually, the gas pressure value of low pressure gas p2 also descends thereupon; When the gas pressure value of low pressure gas p2 equals lower limit p2min1; PLC programming controller 16 cuts out first electromagnetic release valve 10 through first auxiliary reclay 20, and the gas pressure value of control gas pk stops to descend, and the gas pressure value of low pressure gas p2 also stops to descend; And rise gradually once more; So repeatedly, the gas pressure of the low pressure gas p2 when making gas control diaphragm type high-pressure high-flow reduction valve in running order accurately keeps within the specific limits all the time, guarantees that low pressure gas p2 can be accurately reposefully to the working line air feed; When gas control diaphragm type high-pressure high-flow reduction valve is in holding state; Gas pressure CLV ceiling limit value p2max2 and the lower limit p2min2 of low pressure gas p2 when gas control diaphragm type high-pressure high-flow reduction valve being set being in holding state through touch screen 18; At this moment; When the gas pressure of low pressure gas p2 equaled CLV ceiling limit value p2max2, PLC programming controller 16 was opened second electromagnetic release valve 13 through second auxiliary reclay 22, and the low pressure gas p2 in the low pressure chamber 2 can be discharged from second restriction orifice 15 through second electromagnetic release valve 13 gradually; The gas pressure value of low pressure gas p2 will descend thereupon; When the gas pressure value of low pressure gas p2 equaled lower limit p2min2, PLC programming controller 16 cut out second electromagnetic release valve 13 through second auxiliary reclay 22, and the gas pressure value of low pressure gas p2 stops to descend; And rise gradually once more; So repeatedly, the gas pressure of the low pressure gas p2 when making gas control diaphragm type high-pressure high-flow reduction valve be in holding state accurately keeps within the specific limits all the time, guarantees the safety of gas control diaphragm type high-pressure high-flow reduction valve and working line.
Above-described embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that those of ordinary skills make the technological scheme of the utility model all should fall in the definite protection domain of the utility model claims.
Claims (3)
1. gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system; It is characterized in that: comprise casing (7), pressure transmitter (9) and be arranged on central unit (8), first electromagnetic release valve (10) and first erection joint (11) on the casing (7); First restriction orifice (12) is installed in said first erection joint (11); Said pressure transmitter (9) is connected with low pressure chamber (2) outlet end of gas control diaphragm type high-pressure high-flow reduction valve and is connected on the pipeline that communicates; Said first electromagnetic release valve (10) one ends are used for being connected with the control chamber (3) of gas control diaphragm type high-pressure high-flow reduction valve and communicate; Its other end is connected with first erection joint (11) and communicates, and said central unit (8) is electrically connected with pressure transmitter (9) and first electromagnetic release valve (10) respectively.
2. gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system according to claim 1; It is characterized in that: said central unit (8) comprises PLC programming controller (16), mould/number conversion module (17), stabilized power supply (19), first auxiliary reclay (20), the 3rd auxiliary reclay (21) and touch screen (18); Said mould/number conversion module (17) and touch screen (18) all are electrically connected with PLC programming controller (16); Said stabilized power supply (19) is electrically connected with touch screen (18) and first electromagnetic release valve (10) simultaneously; Said first auxiliary reclay (20) is connected electrically between first electromagnetic release valve (10) and the PLC programming controller (16); Said the 3rd auxiliary reclay (21) one ends are electrically connected with PLC programming controller (16); Its other end is used for being connected the electric ball valve (6) that communicates with low pressure chamber (2) outlet end and is electrically connected, and said pressure transmitter (9) is electrically connected with mould/number conversion module (17).
3. gas control diaphragm type high-pressure high-flow reduction valve outlet pressure control system according to claim 2; It is characterized in that: said reduction valve outlet pressure control system also comprises second electromagnetic release valve (13) and second erection joint (14); Said second erection joint (14) is equipped with second restriction orifice (15); Said second electromagnetic release valve (13) one ends are used for being connected with the low pressure chamber (2) of gas control diaphragm type high-pressure high-flow reduction valve and communicate; Its other end is connected with second erection joint (14) and communicates; Said central unit (8) also comprises second auxiliary reclay (22), and said second electromagnetic release valve (13) is electrically connected with stabilized power supply (19), and said second auxiliary reclay (22) is connected electrically between second electromagnetic release valve (13) and the PLC programming controller (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220295611 CN202629291U (en) | 2012-06-19 | 2012-06-19 | Air-control membrane-type high-pressure large-flow reducing valve outlet pressure control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220295611 CN202629291U (en) | 2012-06-19 | 2012-06-19 | Air-control membrane-type high-pressure large-flow reducing valve outlet pressure control system |
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| Publication Number | Publication Date |
|---|---|
| CN202629291U true CN202629291U (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220295611 Withdrawn - After Issue CN202629291U (en) | 2012-06-19 | 2012-06-19 | Air-control membrane-type high-pressure large-flow reducing valve outlet pressure control system |
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| CN (1) | CN202629291U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720881A (en) * | 2012-06-19 | 2012-10-10 | 宁波星箭航天机械有限公司 | Outlet pressure control system for air-controlled diaphragm type high-pressure large-flow pressure relief valve |
-
2012
- 2012-06-19 CN CN 201220295611 patent/CN202629291U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720881A (en) * | 2012-06-19 | 2012-10-10 | 宁波星箭航天机械有限公司 | Outlet pressure control system for air-controlled diaphragm type high-pressure large-flow pressure relief valve |
| CN102720881B (en) * | 2012-06-19 | 2013-12-04 | 宁波星箭航天机械有限公司 | Outlet pressure control system for air-controlled diaphragm type high-pressure large-flow pressure relief valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Xianhui Inventor after: Li Wuli Inventor before: Li Wuli Inventor before: Li Xianhui |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI WULI LI XIANHUI TO: LI XIANHUI LI WULI |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20121226 Effective date of abandoning: 20131204 |
|
| RGAV | Abandon patent right to avoid regrant |