CN203616104U - Pressure limiting valve durability test device - Google Patents
Pressure limiting valve durability test device Download PDFInfo
- Publication number
- CN203616104U CN203616104U CN201320728544.0U CN201320728544U CN203616104U CN 203616104 U CN203616104 U CN 203616104U CN 201320728544 U CN201320728544 U CN 201320728544U CN 203616104 U CN203616104 U CN 203616104U
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- limiting valve
- pressure limiting
- pressure
- cylindrical shell
- test device
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Abstract
The utility model relates to a pressure limiting valve durability test device which comprises a base which is equipped with a cylinder body which is communicated with a liquid conveying pipe which is equipped with a pressure boosting pump. The top end of the cylinder body is provided with a fluid outlet which extends to a top end face. The cylinder body is equipped with a pressure sensor used for detecting the fluid pressure in the cylinder. The side wall of the cylinder body is provided with a pressure relief port which is equipped with an electromagnetic valve. A pressure limiting valve pressing mechanism is installed on the base just above the cylinder body. The above pressure boosting pump, the control end of the electromagnetic valve and the signal output end of the pressure sensor are electrically connected to a controller. According to the pressure limiting valve durability test device, the purpose of testing the durability of a pressure limiting valve is realized, and the device has the advantages of simple overall structure and convenient operation.
Description
Technical field
The utility model relates to pressure limiting valve life test field, specifically a kind of pressure limiting valve durability test device.
Background technology
Feed-back type pressure limiting device is equipped with in pressure limiting valve inside, in the time that the pressure of valve inlet input reaches requirement pressure, promotes pressure limiting valve opening, and the medium being closed is passed through.In engine lubrication system, pressure limiting valve is used in many places, if pressure limiting valve is after repeatedly opening, because weakening after causing pressure limiting valve not open or to open, unlatching ability can not close, can impact engine lubrication, cooling power, gently affect engine performance, heavy cause engine damage, therefore, the requirement that whether can also meet flow, opening pressure after pressure limiting valve is repeatedly opened is tested, and just seems particularly important.
Present stage examines the test of pressure limiting valve, is limited to the functional trial of the aspect such as opening pressure, flow more, there is no the independent method that pressure limiting valve opening times is examined, and can only on engine, carry examination.For most pressure limiting valves, owing to cannot pressure limiting valve place opening pressure being measured and be controlled, therefore cannot determine the duty of pressure limiting valve on engine, and then cannot evaluate pressure limiting valve whether can also meet the requirement of flow, opening pressure after repeatedly opening.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of simple in structure, easy to use, the pressure limiting valve durability test device that can test the permanance of pressure limiting valve.
For solving the problems of the technologies described above, pressure limiting valve durability test device of the present utility model comprises pedestal, its design feature is that the cylindrical shell being communicated with liquid transfer pipeline is installed on described pedestal, on liquid transfer pipeline, supercharge pump is installed, the top of cylindrical shell offers the liquid outlet extending on its top end face, pressure transducer for detection of liquid pressure in cylinder is installed on cylindrical shell, on cylinder lateral wall, offer on pressure relief opening and pressure relief opening solenoid valve is installed, pressure limiting valve hold-down mechanism is installed on pedestal directly over cylindrical shell; The control end of above-mentioned supercharge pump and solenoid valve and the signal output part of pressure transducer are all electrically connected on a controller.
Adopt said structure, pressure limiting valve is placed between briquetting and cylindrical shell, the entrance of pressure limiting valve is aimed at the liquid outlet on cylinder top face, utilize pressure limiting valve hold-down mechanism that pressure limiting valve is fastening, utilize supercharge pump to pressurize to liquid, high pressure liquid higher than pressure limiting valve opening pressure is provided, pressure transducer detects the pressure in cylindrical shell in real time, the switching of controller control solenoid valve, and then control the liquid pressure in whole frock, so that the open and close state of simulation pressure limiting valve: in the time that needs are simulated pressure limiting valve unlatching, control closed electromagnetic valve certain hour, set up oil pressure to guarantee whole frock, and then pressure limiting valve is opened, simulate pressure limiting valve while closing when needs, programmed control solenoid valve is opened, and whole frock is by solenoid valve place draining, and pressure limiting valve cuts out.Set solenoid valve by controller and open, close number of times, to reach the object of automatic test pressure limiting valve opening times, thus the serviceable life that can learn pressure limiting valve.
Described pressure limiting valve hold-down mechanism comprises that the transverse slat, the spiral shell that are supported on pedestal top by many root posts are contained in vertical threaded rod on transverse slat, are arranged on the briquetting of threaded rod bottom and are arranged on the swing handle on threaded rod top, and the bottom face of above-mentioned briquetting is the top end face to described cylindrical shell just.On described transverse slat, offer the through hole passing for threaded rod, on transverse slat, directly over through hole, be provided with threaded rod spiral shell and assemble the swivel nut closing.The top of described threaded rod is connected with sleeve, and described swing handle is inserted in sleeve.Adopt this kind of pressure limiting valve hold-down mechanism, by rotation swing handle, briquetting is declined, thereby pressure limiting valve can be held out against on the top end face of cylindrical shell, simple in structure, easy to operate.
The bottom face of described briquetting is provided with elastomeric pad.Elastomeric pad is set for the protection of pressure limiting valve, avoids damaging pressure limiting valve in compaction process.
The top end face of described cylindrical shell is provided with sealing ring pad.Sealing ring pad is set, guaranteed the sealing property between the entrance of pressure limiting valve and the outlet of the liquid at cylindrical shell top, thereby assurance pressure limiting valve can be set up enough opening pressures.
In sum, to have realized object and one-piece construction that the permanance of pressure limiting valve is tested simple, easy to operate for the utility model.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model.
Embodiment
With reference to accompanying drawing, pressure limiting valve durability test device of the present utility model comprises pedestal 1, the cylindrical shell 2 being communicated with liquid transfer pipeline is installed on pedestal 1, so-called liquid can be hydraulic oil or air, supercharge pump 3 is installed on liquid transfer pipeline, liquid is stored in liquid case 15, and the liquid entrance 23 of cylindrical shell 2 is connected with liquid transfer pipeline.The top of cylindrical shell 2 offers the liquid outlet 21 extending on its top end face, pressure transducer 4 for detection of liquid pressure in cylinder is installed on cylindrical shell 2, on cylindrical shell 2 sidewalls, offer on pressure relief opening 22 and pressure relief opening 22 solenoid valve 5 is installed, pressure limiting valve hold-down mechanism is installed on pedestal 1 directly over cylindrical shell 2; The control end of above-mentioned supercharge pump 3 and solenoid valve 5 and the signal output part of pressure transducer 4 are all electrically connected on a controller.
Adopt said structure, pressure limiting valve 16 is placed between briquetting 9 and cylindrical shell 2, the entrance of pressure limiting valve 16 is aimed at the liquid outlet 21 on cylindrical shell 2 top end faces, utilize pressure limiting valve hold-down mechanism by fastening pressure limiting valve 16, utilize supercharge pump 3 to pressurize to liquid, high pressure liquid higher than pressure limiting valve 16 opening pressures is provided, pressure transducer 4 detects the pressure in cylindrical shell 2 in real time, the switching of controller control solenoid valve 5, and then control the liquid pressure in whole frock, so that the open and close state of simulation pressure limiting valve 16.
Concrete simulation process is: simulate pressure limiting valve 16 while opening when needs, control solenoid valve 5 and close certain hour, to guarantee that in the time that pressure reaches the limit value of pressure limiting valve 16, pressure limiting valve 16 is opened at the interior liquid pressure of setting up of cylindrical shell 1; Simulate pressure limiting valve 16 while closing when needs, controller control solenoid valve 5 is opened, and pressure relief opening 22 is opened, and cylindrical shell 1 internal pressure reduces, and pressure limiting valve 16 cuts out.Record solenoid valve 5 by controller and open, close number of times, its half of opening, closing number of times is pressure limiting valve examination number of times, thus the serviceable life that can learn pressure limiting valve 16, the i.e. permanance of pressure limiting valve.Wherein, in test, the liquid that the outlet of the outlet of pressure limiting valve 16 and solenoid valve 5 is flowed out is back in liquid case 15 by pipeline.
Carrying out the unlatching of certain number of times, closing after test, need carry out performance retrial to pressure limiting valve, to confirm whether pressure limiting valve 16 exists inefficacy.Concrete implementation step is: control supercharge pump 3 and progressively pressurize, by pressure transducer 4 monitor force, until pressure is higher than pressure limiting valve 16 opening pressure 100kPa left and right, check whether pressure limiting valve 16 is opened; Open normally as pressure limiting valve 16, control supercharge pump 3 pressure and progressively reduce, by pressure transducer 4 monitor force, after checking that pressure is lower than pressure limiting valve 16 opening pressures, whether pressure limiting valve 16 can normally close, with this judge through unlatching, close after long duration test, whether pressure limiting valve 16 lost efficacy.
With reference to accompanying drawing, pressure limiting valve hold-down mechanism is for holding out against the upper surface at cylindrical shell 2 by pressure limiting valve 16, it can adopt the knockdown pressing structure of various briquettings, in the utility model, pressure limiting valve hold-down mechanism comprises that the transverse slat 7, the spiral shell that are supported on pedestal 1 top by many root posts 6 are contained in vertical threaded rod 8 on transverse slat 7, are arranged on the briquetting 9 of threaded rod 8 bottoms and are arranged on the swing handle 10 on threaded rod 8 tops, and the bottom face of above-mentioned briquetting 9 is the top end face to described cylindrical shell 2 just.On transverse slat 7, offer the through hole 70 passing for threaded rod 8, on transverse slat 7, directly over through hole 70, be provided with threaded rod 8 spiral shells and assemble the swivel nut 11 closing.The top of threaded rod 8 is connected with sleeve 12, and swing handle 10 is inserted in sleeve 12.By rotation swing handle 10, briquetting 9 is declined, thereby pressure limiting valve 16 can be limited between the bottom face of briquetting 9 and the top end face of cylindrical shell 2.
With reference to accompanying drawing, the bottom face of briquetting 9 is provided with elastomeric pad 13.Elastomeric pad 13 is set for the protection of pressure limiting valve 16, avoids pressure limiting valve 16 in compacted process, to occur damaging.
With reference to accompanying drawing, the top end face of cylindrical shell 2 is provided with sealing ring pad 14.Sealing ring pad 14 can adopt asbestos or elastomeric material to make, and it exports the sealing property between 21 for guaranteeing the entrance of pressure limiting valve 16 and the liquid at cylindrical shell 2 tops, thereby guarantees that pressure limiting valve can set up enough opening pressures.
In sum, the utility model is not limited to above-mentioned embodiment.Those skilled in the art, not departing under the prerequisite of spirit and scope of the present utility model, can do some changes and modification.Protection domain of the present utility model should be as the criterion with claim of the present utility model.
Claims (6)
1. a pressure limiting valve durability test device, comprise pedestal (1), it is characterized in that being provided with on described pedestal (1) cylindrical shell (2) being communicated with liquid transfer pipeline, supercharge pump (3) is installed on liquid transfer pipeline, the top of cylindrical shell (2) offers the liquid outlet (21) extending on its top end face, pressure transducer (4) for detection of liquid pressure in cylinder is installed on cylindrical shell (2), on cylindrical shell (2) sidewall, offer on pressure relief opening (22) and pressure relief opening (22) solenoid valve (5) is installed, pedestal (1) is upper is provided with pressure limiting valve hold-down mechanism directly over cylindrical shell (2), the signal output part of the control end of above-mentioned supercharge pump (3) and solenoid valve (5) and pressure transducer (4) is all electrically connected on a controller.
2. pressure limiting valve durability test device as claimed in claim 1, it is characterized in that described pressure limiting valve hold-down mechanism comprises that the transverse slat (7), the spiral shell that are supported on pedestal (1) top by many root posts (6) are contained in vertical threaded rod (8) on transverse slat (7), are arranged on the briquetting (9) of threaded rod (8) bottom and are arranged on the swing handle (10) on threaded rod (8) top, the just top end face to described cylindrical shell (2) of the bottom face of above-mentioned briquetting (9).
3. pressure limiting valve durability test device as claimed in claim 2, it is characterized in that offering the through hole (70) passing for threaded rod (8) on described transverse slat (7), upper being provided with directly over through hole (70) with threaded rod (8) spiral shell of transverse slat (7) assembled the swivel nut (11) closing.
4. pressure limiting valve durability test device as claimed in claim 2, is characterized in that the top of described threaded rod (8) is connected with sleeve (12), and described swing handle (10) is inserted in sleeve (12).
5. pressure limiting valve durability test device as claimed in claim 2, is characterized in that the bottom face of described briquetting (9) is provided with elastomeric pad (13).
6. the pressure limiting valve durability test device as described in any one in claim 1 to 5, is characterized in that the top end face of described cylindrical shell (2) is provided with sealing ring pad (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320728544.0U CN203616104U (en) | 2013-11-19 | 2013-11-19 | Pressure limiting valve durability test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320728544.0U CN203616104U (en) | 2013-11-19 | 2013-11-19 | Pressure limiting valve durability test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203616104U true CN203616104U (en) | 2014-05-28 |
Family
ID=50768738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320728544.0U Expired - Fee Related CN203616104U (en) | 2013-11-19 | 2013-11-19 | Pressure limiting valve durability test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203616104U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738092A (en) * | 2016-02-04 | 2016-07-06 | 潍柴动力股份有限公司 | Pressure-limiting valve fatigue test device and method |
| CN105910831A (en) * | 2016-03-01 | 2016-08-31 | 西安航空动力股份有限公司 | Air unidirectional valve fault improvement measure effectiveness test method and verification method |
-
2013
- 2013-11-19 CN CN201320728544.0U patent/CN203616104U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738092A (en) * | 2016-02-04 | 2016-07-06 | 潍柴动力股份有限公司 | Pressure-limiting valve fatigue test device and method |
| CN105738092B (en) * | 2016-02-04 | 2018-03-13 | 潍柴动力股份有限公司 | A kind of pressure limiting valve fatigue experimental device and method |
| CN105910831A (en) * | 2016-03-01 | 2016-08-31 | 西安航空动力股份有限公司 | Air unidirectional valve fault improvement measure effectiveness test method and verification method |
| CN105910831B (en) * | 2016-03-01 | 2018-06-22 | 西安航空动力股份有限公司 | Air check valve of position failure corrective measure efficiency assay method and verification method |
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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: 20140528 Termination date: 20141119 |
|
| EXPY | Termination of patent right or utility model |