CN102116700A - Method for preventing pressure regulating device in satellite leakage detection automatic air inflation and deflation equipment from bearing back pressure - Google Patents
Method for preventing pressure regulating device in satellite leakage detection automatic air inflation and deflation equipment from bearing back pressure Download PDFInfo
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- CN102116700A CN102116700A CN2009102171511A CN200910217151A CN102116700A CN 102116700 A CN102116700 A CN 102116700A CN 2009102171511 A CN2009102171511 A CN 2009102171511A CN 200910217151 A CN200910217151 A CN 200910217151A CN 102116700 A CN102116700 A CN 102116700A
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Abstract
The utility model provides a method for preventing a pressure regulating device in satellite leakage detection automatic air inflation and deflation equipment from bearing the back pressure. The method solves the problem that an electric proportional pressure regulating valve in the satellite leakage detection automatic air inflation and deflation equipment can not bear the back pressure through mounting a one-way valve at the outlet end of a pressure adjusting device, and can effectively protect the electric proportional pressure regulating valve and other pressure regulating devices and prolong the service life of the electric proportional pressure regulating valve and the other pressure regulating devices. Moreover, the method has the advantages that the implementation process is simple, no operation step is added to the operation of the prior automatic air inflation and deflation equipment, and the change and the influence on the prior automatic air inflation and deflation control process can be avoided. The method belongs to a concealed type solution.
Description
Technical field
The present invention relates to a kind of regulator that prevents and bear the method for back-pressure, particularly relate to and a kind ofly solve satellite leak detection and charge and discharge the method that regulator in the gas equipment bears back-pressure automatically.
Background technology
The leak detection of present satellite charges and discharge in the gas equipment, bears back-pressure in order to prevent regulator, employing be the method that by-pass valve control (manually-operated gate and automatic valve) is installed at the regulator endpiece, prevent the regulator reverse pressure-bearing by controlled valve.
Because workpiece is to charging and discharging the requirement of atmospheric pressure and speed, leak detection charges and discharge automatically and needs to dispose automatically controlled regulator (being electric proportional dump valve) in the gas equipment and automatic valve is realized automatic charging-discharging function, yet, for regulator, because its structure function restriction can not be born the reverse pressure reduction above certain limit, otherwise can be damaged regulator, build-up of pressure is regulated and was lost efficacy, and consequence is very serious.
Usually, the general easy method of expecting increases an automatic valve exactly again behind regulator, this method can be dealt with problems, but increase an automatic valve just to " back-pressure " problem of solution, the controlling unit (comprising software, hardware) that corresponding increase is certain, increased many costs on the one hand, the more important thing is that the reliability design aspect has also increased certain degree of difficulty and risk.At this problem, consider just to " back-pressure " problem of solution, the inventor proposes a kind of use retaining valve (non-return valve) and prevents to hunt leak and charge and discharge the method that regulator in the gas equipment bears back-pressure automatically, select the opening pressure low retaining valve of trying one's best to be installed in the endpiece of regulator, retaining valve belongs to the device of pure mechanical principle, positive pressure circulates after greater than opening pressure, moment ends after the buffer brake effect, and buffer brake is big more, easy more sealing, both guaranteed that regulator can not bear the back-pressure above certain limit, the gas circuit that can satisfy the pressure regulator valve operate as normal again is unimpeded.
Summary of the invention
The purpose of this invention is to provide and a kind ofly prevent that satellite leak detection from charging and discharging the method that regulator in the gas equipment bears back-pressure automatically.This method can be totally independent of leak detection and charge and discharge automatically outside the gas equipment, and solution regulator " back-pressure " problem, reduced controlling unit to a certain extent, also reduced simultaneously cost, automatically charge and discharge practical application in the gas process by leak detection at multi-satellite, effect is very desirable, has solved the problem of regulator back-pressure cleverly.
Provided by the present inventionly a kind ofly prevent that satellite leak detection from charging and discharging the method that regulator in the gas equipment bears back-pressure automatically, comprise and determine the retaining valve working pressure, determine the opening pressure of retaining valve and the step of retaining valve is set; May further comprise the steps specifically:
1) determines retaining valve working pressure P: according to workpiece leak detection pressure P
0Requirement, select working pressure P=(1.5～2) P of retaining valve
0
2) determine retaining valve opening pressure P
k: charge and discharge the requirement of gas control system automatically according to workpiece minimum leak detection pressure and leak detection, select the opening pressure little retaining valve of trying one's best, preferred P
k≤ 0.01Mpa, more preferably P
k≤ 0.005Mpa, for example: select P
kThe opening pressure of=0.003MPa;
3) retaining valve is installed: retaining valve is installed in electric proportional dump valve endpiece, and guarantees that the installation direction of retaining valve is correct.
Wherein in step 3), according to the principle of work of retaining valve, that is: forward is opened, and oppositely ends, and determines the installation direction of retaining valve.
Wherein in step 3), between electric proportional dump valve endpiece and the retaining valve without any the gas branch road.
Method provided by the present invention is applicable to that the satellite leak detection that has electric proportional dump valve device charges and discharge gas equipment automatically, and is simultaneously suitable equally for other gas equipment that charges and discharge that has regulator.Method provided by the present invention has solved the satellite leak detection and has charged and discharged the problem that electric proportional dump valve in the gas equipment can not bear back-pressure automatically; can effectively protect regulators such as electric proportional dump valve; and prolong its serviceable life; and this method implementation process is simple; can additionally not increase any operation steps for original operation that charges and discharge gas equipment automatically; can not bring any change and influence for original gas control processing procedure preface that charges and discharge automatically, belong to the solution of " hidden ".The characteristics of technical solution of the present invention comprise:
1. the present invention utilizes the forward of retaining valve to open first, and the characteristics of oppositely ending have solved the satellite leak detection and charged and discharged the problem that electric proportional dump valve in the gas equipment can not bear back-pressure automatically.
2. the retaining valve of the present invention's employing is installed in the regulator endpiece, and installation direction must be correct, simultaneously, any gas branch road must not be arranged between regulator endpiece and retaining valve.
Description of drawings
Fig. 1 bears the synoptic diagram of the method for back-pressure for the regulator that prevents that the satellite leak detection from charging and discharging in the gas equipment automatically of the present invention.
Embodiment
What below introduce is embodiment as content of the present invention, below by embodiment described content of the present invention is further illustrated.Certainly, describe following embodiment and only be the content of example different aspect of the present invention, and should not be construed as the restriction scope of the invention.
Essence of the present invention is, utilizes the forward of retaining valve to open, and the characteristics of oppositely ending are installed in the regulator endpiece with retaining valve according to correct direction, charges and discharge the problem that regulator in the gas equipment bears back-pressure automatically thereby solve the satellite leak detection.
For method of the present invention, specifically, comprise following three steps:
1) determines retaining valve working pressure P: according to workpiece leak detection pressure P
0Requirement, select working pressure P=(1.5～2) P of retaining valve
0Usually, the leak detection pressure P of workpiece
0Be a known quantity, the working pressure P of retaining valve can select according to this numerical value.
2) determine retaining valve opening pressure P
k: charge and discharge the control requirement of gas automatically according to workpiece minimum leak detection pressure and leak detection, select the opening pressure little retaining valve of trying one's best, preferred P
k≤ 0.01Mpa, more preferably P
k≤ 0.005Mpa for example can select P
kThe opening pressure of=0.003MPa (the same);
3) retaining valve is installed: retaining valve is installed in electric proportional dump valve endpiece, and guarantees that installation direction is correct.As shown in Figure 1, during the work of electric proportional dump valve, only allow gas to flow from left to right, the left side is electric proportional dump valve inlet end, and the right side is an endpiece, and endpiece pressure must not be greater than inlet end pressure, otherwise electric proportional dump valve will bear back-pressure.At electric proportional dump valve endpiece a retaining valve is installed, the forward opening direction (gas flow direction) of retaining valve also is necessary for direction from left to right, and must not be connected any gas branch road again between electric proportional dump valve endpiece and the retaining valve.At this moment,, will at first oppositely be ended, can't arrive the pressure regulator valve endpiece, make it bear back-pressure by retaining valve if when having the gas right-to-left to flow to electric proportional dump valve endpiece; Simultaneously, when the pressure regulator valve operate as normal, gas from left to right is owing to the forward opening feature of retaining valve, and the retaining valve that passes through that can not be affected flows.
By above explanation as can be known, method provided by the present invention can solve satellite leak detection fully and charge and discharge the problem that electric proportional dump valve in the gas equipment can not bear back-pressure automatically, and this method implementation process is simple, can additionally not increase any operation steps for original operation that charges and discharge gas equipment automatically, can not bring any change and influence for original gas control processing procedure preface that charges and discharge automatically, belong to completely the solution of " hidden ".Go for any satellite leak detection that has electric proportional dump valve device and charge and discharge gas equipment automatically, simultaneously suitable equally for other gas equipment that charges and discharge that has regulator.
Although above the specific embodiment of the present invention is described in detail and illustrates, but what should indicate is, we can carry out various changes and modification to above-mentioned embodiment, but these do not break away from the scope that spirit of the present invention and appended claim are put down in writing.
Claims (5)
1. one kind prevents that satellite leak detection from charging and discharging the method that regulator in the gas equipment bears back-pressure automatically, may further comprise the steps:
1) determines retaining valve working pressure P: according to workpiece leak detection pressure P
0Requirement, select working pressure P=(1.5～2) P of retaining valve
0
2) determine retaining valve opening pressure p
k: charge and discharge the requirement of gas control system automatically according to workpiece minimum leak detection pressure and leak detection, select the opening pressure little retaining valve of trying one's best, select P
k≤ 0.01Mpa opening pressure;
3) retaining valve is installed: retaining valve is installed in electric proportional dump valve endpiece, and guarantees that the installation direction of retaining valve is correct.
2. the method for claim 1, wherein select P
k≤ 0.005Mpa.
3. the method for claim 1, wherein select P
k=0.003MPa.
4. as each described method of claim 1-3, wherein, in step 3), according to the principle of work of retaining valve, that is: forward is opened, and oppositely ends, and determines the installation direction of retaining valve.
5. as each described method of claim 1-3, wherein in step 3), between electric proportional dump valve endpiece and the retaining valve without any the gas branch road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102171511A CN102116700A (en) | 2009-12-31 | 2009-12-31 | Method for preventing pressure regulating device in satellite leakage detection automatic air inflation and deflation equipment from bearing back pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102171511A CN102116700A (en) | 2009-12-31 | 2009-12-31 | Method for preventing pressure regulating device in satellite leakage detection automatic air inflation and deflation equipment from bearing back pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102116700A true CN102116700A (en) | 2011-07-06 |
Family
ID=44215567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102171511A Pending CN102116700A (en) | 2009-12-31 | 2009-12-31 | Method for preventing pressure regulating device in satellite leakage detection automatic air inflation and deflation equipment from bearing back pressure |
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| Country | Link |
|---|---|
| CN (1) | CN102116700A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864645A (en) * | 2021-08-25 | 2021-12-31 | 上海空间推进研究所 | Blowing system for rail-controlled engine ground test |
-
2009
- 2009-12-31 CN CN2009102171511A patent/CN102116700A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864645A (en) * | 2021-08-25 | 2021-12-31 | 上海空间推进研究所 | Blowing system for rail-controlled engine ground test |
| CN113864645B (en) * | 2021-08-25 | 2023-10-13 | 上海空间推进研究所 | Blowing system for ground test of rail control engine |
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Application publication date: 20110706 |