CN205384126U - Airtight testboard of hydrovalve - Google Patents
Airtight testboard of hydrovalve Download PDFInfo
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- CN205384126U CN205384126U CN201520968476.4U CN201520968476U CN205384126U CN 205384126 U CN205384126 U CN 205384126U CN 201520968476 U CN201520968476 U CN 201520968476U CN 205384126 U CN205384126 U CN 205384126U
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Abstract
The utility model discloses an airtight testboard of hydrovalve belongs to hydraulic component test technical field, and it includes: including first station, first station is including test unit and installation unit, the test unit includes that valve piece parts seal up frock, two pneumatic four -way reversing valve, first pneumatic relief pressure valve and gaseous glass rotameter, installation unit includes cylinder and pneumatic tribit five -way switching -over valve, valve piece part includes valve body installation department, frock installation department, cylinder installation department and gas outgoing mouth, the cylinder includes cylinder and piston rod, sealed frock includes frock exhaust portion, frock fixed part, frock air intake part and frock inner through hole. The utility model discloses can accurate detection air pressure gentleness leakage quantity, quick replacement tested the valve body simultaneously again, improves detection achievement efficiency.
Description
Technical field
This utility model relates to a kind of airtight testboard of hydraulic valve, belongs to Hydraulic Elements technical field of measurement and test.
Background technology
The sealing property of hydraulic valve spool linear sealing place is very crucial to the serviceability of hydraulic valve, and air-leakage test is effective detection method of the sealing property detecting spool linear sealing place.Air-leakage test needs to ventilate in valve seat oiler side, detects gas leakage quantity in hydraulic valve oil drain out side simultaneously, and the gentle leakage quantity two indices of pressure of being ventilated needs to meet relevant regulations simultaneously.At present, in prior art, the air pressure gentle leakage quantity testing accuracy detected by the air tightness detection equipment of hydraulic valve core linear sealing place is not high, detects inefficiency.
Utility model content
The purpose of this utility model is in that, it is provided that a kind of airtight testboard of hydraulic valve, this utility model can the accurate gentle leakage quantity of detected air pressure, again can the tested valve body of quick-replaceable, improve and detect work efficiency.
For solving above-mentioned technical problem, this utility model adopts the following technical scheme that: a kind of airtight testboard of hydraulic valve, including the first station, it is characterized in that, described first station includes test cell and installation unit, and described test cell includes valve block part sealing frock, pneumatic two position and four-way reversing valves, the first pneumatic pressure-release valve and gas glass rotameter；Described installation unit includes cylinder and pneumatic 3 position-5 way valve；Described valve block part includes valve body installation portion, frock installation portion, cylinder installation portion and gas discharge outlet；Described cylinder includes cylinder barrel and piston rod；Described sealing frock includes frock exhaust portion, frock fixed part, frock intake section and frock interior bone.
The cylinder barrel of described cylinder is fixing with cylinder installation portion to be connected, the external screw thread of tested valve body is connected with the female thread of valve body installation portion, described frock exhaust portion and tested valve body inner bore seal, slidable connection, O shape rubber seal or other sealing members can be adopted to carry out axial seal, can seal and can slide axially；Described frock fixed part cylindrical coordinates slidable connection with frock installation portion hole, and described frock intake section and piston rod end removably connect, such as threaded or Flange joint, and can push-and-pull sealing frock by the piston rod of cylinder.
By gas piping by source of the gas successively with pneumatic two position and four-way reversing valves in test cell, the first pneumatic pressure-release valve, frock interior bone, tested valve body, gas discharge outlet, gas glass rotameter order UNICOM.Air pressure is reduced to required standard value by the first pneumatic pressure-release valve, and gas glass rotameter can accurate detected gas leakage rate.
By gas piping by source of the gas successively with the pneumatic 3 position-5 way valve in installation unit, cylinder sequence UNICOM, pneumatic 3 position-5 way valve can manually or electric operating control the direction of air-flow, thus the piston rod controlling cylinder stretches out or retracts, thus sealing frock quickly loads or exits the endoporus of tested valve body, realize the tested valve body of quick-replaceable, improve the purpose of work efficiency.Described sealing frock can carry out adaptive structural adjustment according to the difference of hydraulic valve form.
Also include pneumatic stopping valve, the second pneumatic pressure-release valve and pneumatic throttle；By gas piping by source of the gas successively with pneumatic two position and four-way reversing valves in pneumatic stopping valve, the second pneumatic pressure-release valve and test cell, the first pneumatic pressure-release valve, frock interior bone, tested valve body, gas discharge outlet, gas glass rotameter order UNICOM, described pneumatic stopping valve is for realizing opening or closing of this utility model source of the gas, thus reasonable energy utilization, second pneumatic pressure-release valve realizes the pressure of source of the gas is reduced to the maximal pressure force value in this utility model unit desirable pressure, then is supplied respectively to test cell and installation unit.By gas piping by the second Pneumatic decompression valve outlet port successively with the pneumatic 3 position-5 way valve in pneumatic throttle and installation unit, cylinder sequence UNICOM, by pneumatic throttle adjust installation unit gas flow, reasonably utilize the energy.
Also including the second station, the second station and the first station structure are identical, and described second station also includes test cell and installation unit；By gas piping by described Pneumatic choke valve outlet port successively with pneumatic two position and four-way reversing valves in test cell in the second station, the first pneumatic pressure-release valve, frock interior bone, tested valve body, gas discharge outlet, gas glass rotameter order UNICOM；By gas piping by described Pneumatic choke valve outlet port successively with the pneumatic 3 position-5 way valve in installation unit in the second station, cylinder sequence UNICOM.This utility model arranges two stations can carry out detection work simultaneously, and can detect the hydraulic valve of different size simultaneously, thus further improve work efficiency.
Described first pneumatic pressure-release valve and the second pneumatic pressure-release valve are all with piezometer, it is possible to show force value in real time；Described piezometer is alternatively pressure transmitter, and pressure signal is sent to industrial computer or PLC, thus carrying out data acquisition or automatically controlling.
Described pneumatic two position and four-way reversing valves are pneumatic two four-way electromagnetic reversing valves, and described pneumatic 3 position-5 way valve is pneumatic 3 position-5 way solenoid directional control valve, thus realizing Electronic control or automatic control reversing valve, further improve work efficiency.
The air vent of described pneumatic two position and four-way reversing valves and pneumatic 3 position-5 way valve is with acoustic filter, thus the noise produced when reducing use.
This utility model can be used for the air-tightness detecting between the hydraulic valve core of other seal form and valve body, and person of ordinary skill in the field can carry out the adaptability design of concrete attachment structure according to the connected mode of concrete hydraulic valve.
Compared with prior art, this utility model accuracy of detection is good, work efficiency is high, compact conformation, and adopts pneumatic principle to realize, and reliability is high, pollution-free, have higher anti-explosion safety performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the present utility model；
Fig. 2 is the structural representation of valve block part of the present utility model；
Fig. 3 is the structural representation of sealing frock of the present utility model；
Fig. 4 is the structural representation of a kind of embodiment of the present utility model；
Fig. 5 is the structural representation of a kind of embodiment of the present utility model.
Accompanying drawing labelling: A-the first station, A1-test cell, A2-installation unit, B-the second station, 1-valve block part, 101-valve body installation portion, 102-frock installation portion, 103-cylinder installation portion, 104-gas discharge outlet, 2-sealing frock, 201-frock intake section, 202-frock fixed part, 203-frock exhaust portion, 204-frock interior bone, 3-cylinder, 301-cylinder barrel, 302-piston rod, pneumatic two position and four-way reversing valves of 4-, the pneumatic 3 position-5 way valve of 5-, 6-the first pneumatic pressure-release valve, 7-gas glass rotameter, the tested valve body of 8-, 9-pneumatic stopping valve, 10-the second pneumatic pressure-release valve, 11-pneumatic throttle, 12-acoustic filter, 13-piezometer.
Below in conjunction with the drawings and specific embodiments, this utility model is further described.
Detailed description of the invention
Embodiment 1 of the present utility model: as shown in Figures 1 to 3, a kind of airtight testboard of hydraulic valve, including the first station A, it is characterized in that, described first station A includes test cell A1 and installation unit A2, described test cell A1 and includes valve block part 1, sealing frock 2, pneumatic two position and four-way reversing valve the 4, first pneumatic pressure-release valve 6 and gas glass rotameters 7；Described installation unit A2 includes cylinder 3 and pneumatic 3 position-5 way valve 5；Described valve block part 1 includes valve body installation portion 101, frock installation portion 102, cylinder installation portion 103 and gas discharge outlet 104；Described cylinder 3 includes cylinder barrel 301 and piston rod 302；Described sealing frock 2 includes frock exhaust portion 203, frock fixed part 202, frock intake section 201 and frock interior bone 204.
The cylinder barrel 301 of described cylinder 3 is fixing with cylinder installation portion 103 to be connected, the external screw thread of tested valve body 8 is connected with the female thread of valve body installation portion 101, described frock exhaust portion 203 and tested valve body 8 endoporus seal, slidable connection, adopt O shape rubber seal to carry out axial seal, can seal and can slide axially；Described frock fixed part 202 cylindrical coordinates and slidable connection with frock installation portion 102 hole, and described frock intake section 201 is connected with piston rod 302 end flange, and cylinder 3302 is for push-and-pull sealing frock 2.
By gas piping by source of the gas successively with pneumatic two position and four-way reversing valve the 4, first pneumatic pressure-release valves 6 in test cell A1, frock interior bone 204, tested valve body 8, gas discharge outlet 104, gas glass rotameter 7 order UNICOM, first pneumatic pressure-release valve 6 for being reduced to required standard value by air pressure, and gas glass rotameter 7 is for detected gas leakage rate.
By gas piping by source of the gas successively with the pneumatic 3 position-5 way valve 5 in installation unit A2, cylinder 3 order UNICOM, pneumatic 3 position-5 way valve 5 can manually operate the direction controlling air-flow, thus the piston rod 302 controlling cylinder 3 stretches out or retracts, thus sealing frock 2 quickly loads or exits the endoporus of tested valve body 8, realize the tested valve body 8 of quick-replaceable, improve the purpose of work efficiency.
Embodiment 2 of the present utility model: as shown in Figure 4, a kind of airtight testboard of hydraulic valve, including the first station A, it is characterized in that, described first station A includes test cell A1 and installation unit A2, described test cell A1 and includes valve block part 1, sealing frock 2, pneumatic two position and four-way reversing valve the 4, first pneumatic pressure-release valve 6 and gas glass rotameters 7；Described installation unit A2 includes cylinder 3 and pneumatic 3 position-5 way valve 5；Described valve block part 1 includes valve body installation portion 101, frock installation portion 102, cylinder installation portion 103 and gas discharge outlet 104；Described cylinder 3 includes cylinder barrel 301 and piston rod 302；Described sealing frock 2 includes frock exhaust portion 203, frock fixed part 202, frock intake section 201 and frock interior bone 204.
The cylinder barrel 301 of described cylinder 3 is fixing with cylinder installation portion 103 to be connected, the external screw thread of tested valve body 8 is connected with the female thread of valve body installation portion 101, described frock exhaust portion 203 and tested valve body 8 endoporus seal, slidable connection, adopt O shape rubber seal to carry out axial seal, can seal and can slide axially；Described frock fixed part 202 cylindrical coordinates and slidable connection with frock installation portion 102 hole, and described frock intake section 201 is connected with piston rod 302 end flange, and cylinder 3302 is for push-and-pull sealing frock 2.
By gas piping by source of the gas successively with pneumatic two position and four-way reversing valve the 4, first pneumatic pressure-release valves 6 in test cell A1, frock interior bone 204, tested valve body 8, gas discharge outlet 104, gas glass rotameter 7 order UNICOM, first pneumatic pressure-release valve 6 for being reduced to required standard value by air pressure, and gas glass rotameter 7 is for detected gas leakage rate.
By gas piping by source of the gas successively with the pneumatic 3 position-5 way valve 5 in installation unit A2, cylinder 3 order UNICOM, pneumatic 3 position-5 way valve 5 can manually operate the direction controlling air-flow, thus the piston rod 302 controlling cylinder 3 stretches out or retracts, thus sealing frock 2 quickly loads or exits the endoporus of tested valve body 8, realize the tested valve body 8 of quick-replaceable, improve the purpose of work efficiency.
Also include pneumatic stopping valve the 9, second pneumatic pressure-release valve 10 and pneumatic throttle 11；By gas piping by source of the gas successively with pneumatic stopping valve 9, pneumatic two position and four-way reversing valves 4 in second pneumatic pressure-release valve 10 and test cell A1, first pneumatic pressure-release valve 6, frock interior bone 204, tested valve body 8, gas discharge outlet 104, gas glass rotameter 7 is UNICOM sequentially, described pneumatic stopping valve 9 is for realizing opening or closing of this utility model source of the gas, thus reasonable energy utilization, second pneumatic pressure-release valve 10 realizes the maximal pressure force value being reduced to by the pressure of source of the gas in this utility model unit desirable pressure, it is supplied respectively to test cell A1 and installation unit A2 again.By gas piping the second pneumatic pressure-release valve 10 exported successively with the pneumatic 3 position-5 way valve 5 in pneumatic throttle 11 and installation unit A2, cylinder 3 order UNICOM, adjusted the gas flow of installation unit A2 by pneumatic throttle 11, reasonably utilize the energy.
Embodiment 3 of the present utility model: as shown in Figure 5, a kind of airtight testboard of hydraulic valve, including the first station A, it is characterized in that, described first station A includes test cell A1 and installation unit A2, described test cell A1 and includes valve block part 1, sealing frock 2, pneumatic two position and four-way reversing valve the 4, first pneumatic pressure-release valve 6 and gas glass rotameters 7；Described installation unit A2 includes cylinder 3 and pneumatic 3 position-5 way valve 5；Described valve block part 1 includes valve body installation portion 101, frock installation portion 102, cylinder installation portion 103 and gas discharge outlet 104；Described cylinder 3 includes cylinder barrel 301 and piston rod 302；Described sealing frock 2 includes frock exhaust portion 203, frock fixed part 202, frock intake section 201 and frock interior bone 204.
The cylinder barrel 301 of described cylinder 3 is fixing with cylinder installation portion 103 to be connected, the external screw thread of tested valve body 8 is connected with the female thread of valve body installation portion 101, described frock exhaust portion 203 and tested valve body 8 endoporus seal, slidable connection, adopt O shape rubber seal to carry out axial seal, can seal and can slide axially；Described frock fixed part 202 cylindrical coordinates and slidable connection with frock installation portion 102 hole, and described frock intake section 201 is connected with piston rod 302 end flange, and cylinder 3302 is for push-and-pull sealing frock 2.
By gas piping by source of the gas successively with pneumatic two position and four-way reversing valve the 4, first pneumatic pressure-release valves 6 in test cell A1, frock interior bone 204, tested valve body 8, gas discharge outlet 104, gas glass rotameter 7 order UNICOM, first pneumatic pressure-release valve 6 for being reduced to required standard value by air pressure, and gas glass rotameter 7 is for detected gas leakage rate.
By gas piping by source of the gas successively with the pneumatic 3 position-5 way valve 5 in installation unit A2, cylinder 3 order UNICOM, pneumatic 3 position-5 way valve 5 can manually operate the direction controlling air-flow, thus the piston rod 302 controlling cylinder 3 stretches out or retracts, thus sealing frock 2 quickly loads or exits the endoporus of tested valve body 8, realize the tested valve body 8 of quick-replaceable, improve the purpose of work efficiency.
Also include pneumatic stopping valve the 9, second pneumatic pressure-release valve 10 and pneumatic throttle 11；By gas piping by source of the gas successively with pneumatic stopping valve 9, pneumatic two position and four-way reversing valves 4 in second pneumatic pressure-release valve 10 and test cell A1, first pneumatic pressure-release valve 6, frock interior bone 204, tested valve body 8, gas discharge outlet 104, gas glass rotameter 7 is UNICOM sequentially, described pneumatic stopping valve 9 is for realizing opening or closing of this utility model source of the gas, thus reasonable energy utilization, second pneumatic pressure-release valve 10 realizes the maximal pressure force value being reduced to by the pressure of source of the gas in this utility model unit desirable pressure, it is supplied respectively to test cell A1 and installation unit A2 again.By gas piping the second pneumatic pressure-release valve 10 exported successively with the pneumatic 3 position-5 way valve 5 in pneumatic throttle 11 and installation unit A2, cylinder 3 order UNICOM, adjusted the gas flow of installation unit A2 by pneumatic throttle 11, reasonably utilize the energy.
Also including the second station B, the second station B and the first station A structure are identical, and described second station B also includes test cell A1 and installation unit A2；By gas piping described pneumatic throttle 11 exported successively with pneumatic two position and four-way reversing valve the 4, first pneumatic pressure-release valves 6 in test cell A1 in the second station B, frock interior bone 204, tested valve body 8, gas discharge outlet 104, gas glass rotameter 7 order UNICOM；By gas piping described pneumatic throttle 11 exported successively with the pneumatic 3 position-5 way valve 5 in installation unit A2 in the second station B, cylinder 3 order UNICOM.This utility model arranges two stations can carry out detection work simultaneously, and can detect the hydraulic valve of different size simultaneously, thus further improve work efficiency.
Described first pneumatic pressure-release valve 6 and the second pneumatic pressure-release valve 10 are all with piezometer 13, it is possible to show force value in real time；Described piezometer 13 is alternatively pressure transmitter, and pressure signal is sent to industrial computer or PLC, thus carrying out data acquisition or automatically controlling.
Described pneumatic two position and four-way reversing valves 4 are pneumatic two four-way electromagnetic reversing valves, and described pneumatic 3 position-5 way valve 5 is pneumatic 3 position-5 way solenoid directional control valve, thus realizing Electronic control or automatic control reversing valve, further improves work efficiency.
The air vent of described pneumatic two position and four-way reversing valves 4 and pneumatic 3 position-5 way valve 5 is with acoustic filter 12, thus the noise produced when reducing use.
Embodiment 4 of the present utility model: as shown in Figures 1 to 5,
Tested element: pilot operated compound relief valve pilot valve
Gas glass rotameter: the first station 6-60ml/min
Second station 40-400ml/min
Examination criteria: in the ventilation of first guide valve seat oiler side, atmospheric pressure is 30 ± 1psi；
At pilot valve oil drain out side joint flow meter, < 250cc/min is qualified products to gas leakage quantity
The operation principle of a kind of embodiment of the present utility model:
The connection of tested valve body 8 and valve body installation portion 101, described frock exhaust portion 203 and tested valve body 8 endoporus seal, slidable connection；Described frock fixed part 202 cylindrical coordinates slidable connection with frock installation portion 102 hole, and described frock intake section 201 is connected with piston rod 302 end flange, and cylinder 3 is for push-and-pull sealing frock 2.By gas piping by source of the gas successively with pneumatic two position and four-way reversing valve the 4, first pneumatic pressure-release valves 6 in test cell A1, frock interior bone 204, tested valve body 8, gas discharge outlet 104, gas glass rotameter 7 order UNICOM, first pneumatic pressure-release valve 6 for being reduced to required standard value by air pressure, and gas glass rotameter 7 is for detected gas leakage rate.By gas piping by source of the gas successively with the pneumatic 3 position-5 way valve 5 in installation unit A2, cylinder 3 order UNICOM, pneumatic 3 position-5 way valve 5 can manually or electric operating control the direction of air-flow, thus the piston rod 302 controlling cylinder 3 stretches out or retracts, thus sealing frock 2 quickly loads or exits the endoporus of tested valve body 8, realize the tested valve body 8 of quick-replaceable, improve the purpose of work efficiency.
Claims (6)
1. the airtight testboard of hydraulic valve, including the first station (A), it is characterized in that, described first station (A) includes test cell (A1) and installation unit (A2), and described test cell (A1) includes valve block part (1), sealing frock (2), pneumatic two position and four-way reversing valves (4), the first pneumatic pressure-release valve (6) and gas glass rotameter (7)；Described installation unit (A2) includes cylinder (3) and pneumatic 3 position-5 way valve (5)；
Described valve block part (1) includes valve body installation portion (101), frock installation portion (102), cylinder installation portion (103) and gas discharge outlet (104)；Described cylinder (3) includes cylinder barrel (301) and piston rod (302)；Described sealing frock (2) includes frock exhaust portion (203), frock fixed part (202), frock intake section (201) and frock interior bone (204)；
The cylinder barrel (301) of described cylinder (3) is fixing with cylinder installation portion (103) to be connected, the external screw thread of tested valve body (8) is connected with the female thread of valve body installation portion (101), described frock exhaust portion (203) and tested valve body (8) endoporus seal, slidable connection, described frock fixed part (202) cylindrical and frock installation portion (102) hole slidable connection, described frock intake section (201) and piston rod (302) end removably connect；
By gas piping by source of the gas successively with pneumatic two position and four-way reversing valves (4) in test cell (A1), the first pneumatic pressure-release valve (6), frock interior bone (204), tested valve body (8), gas discharge outlet (104), gas glass rotameter (7) order UNICOM；
By gas piping by source of the gas successively with the pneumatic 3 position-5 way valve (5) in installation unit (A2), cylinder (3) order UNICOM.
2. a kind of airtight testboard of hydraulic valve according to claim 1, it is characterised in that also include pneumatic stopping valve (9), the second pneumatic pressure-release valve (10) and pneumatic throttle (11)；
By gas piping by source of the gas successively with pneumatic two position and four-way reversing valves (4) in pneumatic stopping valve (9), the second pneumatic pressure-release valve (10) and test cell (A1), the first pneumatic pressure-release valve (6), frock interior bone (204), tested valve body (8), gas discharge outlet (104), gas glass rotameter (7) order UNICOM；
By gas piping by the second pneumatic pressure-release valve (10) outlet successively with the pneumatic 3 position-5 way valve (5) in pneumatic throttle (11) and installation unit (A2), cylinder (3) order UNICOM.
3. a kind of airtight testboard of hydraulic valve according to claim 2, it is characterized in that, also include the second station (B), second station (B) is identical with the first station (A) structure, and described second station (B) also includes test cell (A1) and installation unit (A2)；
By gas piping by described pneumatic throttle (11) outlet successively with pneumatic two position and four-way reversing valves (4) in the test cell of the second station (B) (A1), the first pneumatic pressure-release valve (6), frock interior bone (204), tested valve body (8), gas discharge outlet (104), gas glass rotameter (7) order UNICOM；
By gas piping by described pneumatic throttle (11) outlet successively with the pneumatic 3 position-5 way valve (5) in the installation unit of the second station (B) (A2), cylinder (3) order UNICOM.
4. the airtight testboard of a kind of hydraulic valve according to Claims 2 or 3, it is characterised in that described first pneumatic pressure-release valve (6) and the second pneumatic pressure-release valve (10) are all with piezometer (13).
5. the airtight testboard of a kind of hydraulic valve according to Claims 2 or 3, it is characterized in that, described pneumatic two position and four-way reversing valves (4) are pneumatic two four-way electromagnetic reversing valves, and described pneumatic 3 position-5 way valve (5) is pneumatic 3 position-5 way solenoid directional control valve.
6. a kind of airtight testboard of hydraulic valve as claimed in any of claims 1 to 3, it is characterized in that, the air vent of described pneumatic two position and four-way reversing valves (4) and pneumatic 3 position-5 way valve (5) is with acoustic filter (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520968476.4U CN205384126U (en) | 2015-11-27 | 2015-11-27 | Airtight testboard of hydrovalve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520968476.4U CN205384126U (en) | 2015-11-27 | 2015-11-27 | Airtight testboard of hydrovalve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205384126U true CN205384126U (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520968476.4U Expired - Fee Related CN205384126U (en) | 2015-11-27 | 2015-11-27 | Airtight testboard of hydrovalve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205384126U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372025A (en) * | 2015-11-27 | 2016-03-02 | 深圳市招科智控科技有限公司 | Gas tight test board of hydraulic valve |
| CN108332958A (en) * | 2018-01-11 | 2018-07-27 | 湖北三江航天红峰控制有限公司 | A kind of multifunction electromagnetic pneumatic stopping valve testing stand |
-
2015
- 2015-11-27 CN CN201520968476.4U patent/CN205384126U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372025A (en) * | 2015-11-27 | 2016-03-02 | 深圳市招科智控科技有限公司 | Gas tight test board of hydraulic valve |
| CN105372025B (en) * | 2015-11-27 | 2018-07-06 | 深圳市招科智控科技有限公司 | A kind of airtight testboard of hydraulic valve |
| CN108332958A (en) * | 2018-01-11 | 2018-07-27 | 湖北三江航天红峰控制有限公司 | A kind of multifunction electromagnetic pneumatic stopping valve testing stand |
| CN108332958B (en) * | 2018-01-11 | 2019-12-24 | 湖北三江航天红峰控制有限公司 | Multifunctional electromagnetic pneumatic stop valve test bed |
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| 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: 20160713 Termination date: 20201127 |
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| CF01 | Termination of patent right due to non-payment of annual fee |