CN208060139U - A kind of pressure valve test device - Google Patents
A kind of pressure valve test device Download PDFInfo
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- CN208060139U CN208060139U CN201820311778.8U CN201820311778U CN208060139U CN 208060139 U CN208060139 U CN 208060139U CN 201820311778 U CN201820311778 U CN 201820311778U CN 208060139 U CN208060139 U CN 208060139U
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Abstract
The utility model is related to test equipment fields, specifically disclose a kind of pressure valve test device, including medium box, are inside contained with medium；Test block is equipped at least one and each test block and is equipped at least one test chamber, and each test chamber is detachably equipped with a pressure valve, and each test chamber forms circulation loop by pipeline and the medium box；Force piece can realize that the medium flows in the circulation loop；Test suite, the pressure and/or flow and/or temperature of the entrance for testing each pressure valve；And control assembly, it is electrically connected with the force piece, test suite.By pressure valve test device described in the utility model, it can realize while multiple pressure limiting valves are tested, obtain the correspondence between the pressure and/or flow and/or temperature and time of each pressure limiting valve, improve measurement efficiency.
Description
Technical field
The utility model is related to test equipment field more particularly to a kind of pressure valve test devices.
Background technology
The test of existing pressure valve such as pressure limiting valve usually requires to carry out by lubricant pump test-bed, does not test individually
Device.When being tested using lubricant pump test-bed, flow and Opening pressure can only be measured, measurement progress is poor, properties ginseng
Number index can not effectively verify examination；And when being tested pressure valve by lubricant pump test-bed, resource can be caused nervous,
Machine oil pump testing is influenced, when debugging is time-consuming and laborious, and testing efficiency is relatively low.
Utility model content
The purpose of this utility model is to provide a kind of pressure valve test device, can directly to pressure valve carry out pressure,
Relationship between time and temperature improves testing efficiency.
For this purpose, the utility model uses following technical scheme：
A kind of pressure valve test device, including
Medium box is inside contained with medium；
Test block is equipped at least one and each test block and is equipped at least one test chamber, each test
Chamber is detachably equipped with a pressure valve, and each test chamber forms circulation loop by pipeline and the medium box；
Force piece can realize that the medium flows in the circulation loop；
Test suite, the pressure and/or flow and/or temperature of the entrance for testing each pressure valve；And
Control assembly is electrically connected with the force piece, test suite.
Further, when the test suite is used to measure the inlet temperature of each pressure valve, the test suite
The first temperature sensor including being connected to the control assembly.
Further, when the test suite is used to measure the inlet temperature of each pressure valve, the test suite
First pressure sensor including being connected to the control assembly.
Further, when the test suite is used to measure the rate of discharge of each pressure valve, the test suite
Flow sensor including being connected to the control assembly.
Further, the entrance of each test chamber is equipped with the first pressure regulator valve for being connected to the control assembly.
Further, the pressure valve is pressure limiting valve, and the test chamber includes first chamber and second chamber, the pressure
Valve can be connected to or cut off the first chamber and second chamber.
Further, further include Working rack, the Working rack includes the bin that one side is equipped with switch gate, and is set to
The idler wheel of the bin bottom；The medium box, the force piece are set in the bin, the test block and the control group
Part is set at the top of the bin.
Further, it is equipped with chamber above the bin, the chamber is rotatably connected to can be with the chamber
The case lid of test chamber is constituted, the test block is set in the test chamber.
Further, at least one test box is equipped in the chamber, each test box is rotatably connected to can
The experiment lid of test space is constituted with the test box, the test block is set in the test chamber and is fixedly arranged on the experiment
Cassette bottom wall.
Further, it is equipped with the first normal open switch on each test box, covers institute corresponding with the test box
Stating experiment lid can be such that first normal open switch is closed；
The chamber is equipped with the second normal open switch, and covering the case lid can be such that second normal open switch is closed.
Further, the medium is lubricating oil.
Further, the pipeline for connecting the outlet of the force piece and the entrance of the test chamber is equipped with filter.
Further, the force piece is pump.
Further, heating component, the cooling component and second for being connected to the control assembly are equipped in the medium box
Temperature sensor.
Further, the medium box outlet is equipped with the second pressure regulator valve, and the outlet for measuring second pressure regulator valve
The second pressure sensor of pressure, second pressure regulator valve and the second pressure sensor are all connected to the control assembly.
Further, the control assembly includes controller, is connected to the display of the controller, operation button, stops
Vehicle button, force piece working station indicator, oil pressure regulation button, medium box temperature adjustment buttons and scram button；
The test suite, force piece are all connected to the controller.
The beneficial effects of the utility model：By pressure valve test device described in the utility model, can realize while right
Multiple pressure limiting valves are tested, and the corresponding pass between the pressure and/or flow and/or temperature and time of each pressure limiting valve is obtained
System, improves measurement efficiency.
Description of the drawings
Fig. 1 is the structural schematic diagram of the pressure valve test device (non-belt switch door) of the utility model；
Fig. 2 is another structural schematic diagram of the pressure valve test device (non-belt switch door) of the utility model；
Fig. 3 is the structural schematic diagram of the pressure valve test device of the utility model；
Fig. 4 is the connection diagram of controller and all parts described in the utility model.
In figure：
1, medium box；
2, test block；
3, force piece；
4, test suite；41, the first temperature sensor；42, first pressure sensor；43, flow sensor；44, second
Temperature sensor；45, second pressure sensor；
5, control assembly；50, keyboard；51, controller；52, display；521, basic display unit；522, pressure display unit；
523, temperature indicator；53, button is run；54, stop button；55, force piece working station indicator；56, pressure adjusting is pressed
Button；57, medium box temperature adjustment buttons；58, scram button；59, storage unit；
6, Working rack；61, bin；62, switch gate；63, idler wheel；64, chamber；65, case lid；66, test box；67,
Experiment lid；
7, pressure limiting valve；
81, the first oil supply bar road；82, the second oil supply bar road；83, fuel feeding branch line；84, oil return line；
91, plug；93, heating component；94, cooling component；95, the first pressure regulator valve；96, the second pressure regulator valve；97, it filters
Device；98, pressure gauge；99, the first normal open switch；100, the second normal open switch.
Specific implementation mode
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
As shown in Figures 1 to 4, a kind of pressure valve test device is present embodiments provided, including medium box 1, test block 2, dynamic
Power part 3, test suite 4 and the control assembly 5 being electrically connected with force piece 3, test suite 4.
In the present embodiment, the pressure valve test device be mainly used for measuring simultaneously the flow of pressure valve, temperature, pressure with
The curved line relation of time, in the present embodiment, the pressure valve is pressure limiting valve 7, is mainly used for lubricating oil pump.
The medium box 1 is for holding medium, and the medium can select hydraulic oil, empty gas and water etc., due to the present embodiment
Pressure valve refer to the pressure limiting valve 7 for lubricating oil pump, therefore, the medium can select hydraulic oil, it is preferred that the medium
Select lubricating oil.
The test block 2 is equipped at least one, and each test block 2 is equipped at least one test chamber, Mei Gesuo
It states test chamber and one pressure limiting valve 7 is detachably installed, and each test chamber is followed by pipeline and the formation of the medium box 1
Loop back path.In the present embodiment, there are two the test block 2 is set, set that there are three the test chambers on each test block 2.
The test chamber is equipped with mounting hole, and the pressure limiting valve 7 is packed by pacifying turn hole in the test chamber, by the survey
Examination chamber is divided into first chamber and second chamber, when the inlet pressure of pressure limiting valve 7 is more than the specified Opening pressure of the pressure limiting valve 7,
The pressure limiting valve 7 is opened, and will be connected to the first chamber and second chamber, i.e., be realized first chamber by the pressure limiting valve 7
Room and the cut-out of second chamber be connected to.The mounting hole being not used on the test chamber of test is sealed by plug 91, prevents medium
Leakage.
The force piece 3 can realize that medium flows in the circulation loop；In the present embodiment, the force piece 3 is
Pump, preferably oil pump.
The test suite 4 is used to test pressure, flow, the temperature of the entrance of each pressure valve, the test group
Part 4 includes being respectively used to measure each inlet temperature of the pressure valve, the first temperature sensor 41 of pressure, first pressure biography
Sensor 42, and rate of discharge for measuring each pressure valve flow sensor 43, first temperature sensor 41, first
Pressure sensor 42 and flow sensor 43 are all connected to the control assembly 5.
The pressure valve test device through this embodiment can be realized while be tested multiple pressure limiting valves 7, obtain
The pressure of each pressure limiting valve 7, flow, the temperature correspondence between the time respectively, improve measurement efficiency.
As shown in Figure 1, in the present embodiment, the outlet of the medium box 1 is connected with the first oil supply bar road 81, described first
Oil supply bar road 81 is not attached to the entrance of pump, and the outlet of the pump is connected with the second oil supply bar road 82, second fuel feeding
One end that main line 82 is not connected with the outlet of the pump is connected with several fuel feeding branch lines 83；The fuel feeding branch line 83
Number is equal to the product of the number of test chamber and the number of test block 2.The fuel feeding branch line 83 is not connected with oil supply bar road
One end be connected to the entrance of the corresponding test chamber, the outlet of each test cavity is interconnected, and passes through oil return pipe
Road 84 is connected to the entrance of the medium box 1.By oil supply bar road, fuel feeding branch line 83, oil return line 84 so that medium
Case 1, oil pump, each test chamber form the circulation loop.
The medium box 1 is equipped with pressure relief opening, and the pressure relief opening is equipped with relief valve, and the pressure in medium box 1, which is more than, lets out
When the specified Opening pressure of pressure valve, the relief valve is opened, to reduce the pressure in medium box 1.Preferably, the pressure relief opening is set
In 1 top of the medium box, when relief valve is opened, the gas in medium box 1 is discharged by pressure relief opening, you can reduce medium box 1
Interior pressure.
As shown in figure 4, being equipped with heating component 93, the cooling component 94 for being connected to the control assembly 5 in the medium box 1
With second temperature sensor 44.Heating component 93 described in the present embodiment is heater, and the cooling component 94 is heat exchanger, is passed through
Control assembly 5 controls heating component 93 and cooling component 94, to adjust the temperature in medium box 1, and is sensed by second temperature
Device 44 monitors the temperature in medium box 1 in real time.
The outlet of the medium box 1 is equipped with the second pressure regulator valve 96, and the outlet pressure for measuring second pressure regulator valve 96
Second pressure sensor 45, second pressure regulator valve 96 and the second pressure sensor 45 are all connected to the control assembly
5.Specifically, second pressure regulator valve 96 is set on first oil supply bar road 81.The second pressure regulation is controlled by control assembly 5
The aperture of valve 96 can adjust the downstream pressure of the second pressure regulator valve 96 so that the downstream pressure of the second pressure regulator valve 96 is stablized one
Determine in range, the medium with steady pressure is provided for test chamber.In the present embodiment, the second pressure regulator valve 96 can also be set to the
On two oil supply bar roads 82.
As shown in Figure 1, the pipeline for connecting the outlet of the force piece 3 and the entrance of the test chamber is equipped with filter
97, specifically, the filter 97 is set to second oil supply bar road 82, for being filtered to medium, avoid in medium
Impurity blocking pipeline.
Second oil supply bar road 82 is equipped with pressure gauge 98, for showing the pressure in the second oil supply bar road 82,
Play suggesting effect.
As shown in figure 4, the entrance of each test chamber is equipped with the first pressure regulator valve for being connected to the control assembly 5
95, specifically, first pressure regulator valve 95 is set on fuel feeding branch line 83, and it is all provided on each fuel feeding branch line 83
There are one first pressure regulator valves 95.The aperture that each first pressure regulator valve 95 is adjusted by control assembly 5, so that phase
The inlet pressure for the test chamber answered is adjusted.
As shown in figure 3, pressure valve test device described in the present embodiment, further includes Working rack 6, the Working rack 6 wraps
Include the bin 61 that one side is equipped with switch gate 62, and the idler wheel 63 set on 61 bottom of the bin；There are four the idler wheel 63 is set,
Four angles of 61 bottom of the bin are respectively arranged on, the preferred idler wheel 63 is universal wheel, can realize that entire pressure valve is surveyed
The movement that trial assembly is set.
The medium box 1, the force piece 3 are set in the bin 61, and the test block 2 and the control assembly 5 are set
In 61 top of the bin.It is described when force piece 3 is stopped since medium box 1 is set to positioned at the lower section of the test chamber
Medium in test chamber is by automatic back flow to medium box 1, convenient for removing the pressure valve being completed.
61 top of the bin is equipped with chamber 64, and the chamber 64 is rotatably connected to can be with 64 structure of the chamber
At the case lid 65 of test chamber, the test block 2 is set in the test chamber.At least one examination is equipped in the chamber 64
Box 66 is tested, each test box 66 is rotatably connected to the experiment lid 67 that test space can be constituted with the test box 66, institute
Test block 2 is stated in the test chamber and is fixedly arranged on 66 bottom wall of the test box.By above-mentioned setting, can easily beat
It opens and blocking test chamber, test space, dustproof and waterproof can be played the role of.
It is equipped with the first normal open switch 99 on each test box 66, covers the examination corresponding with the test box 66
Testing lid 67 can be such that first normal open switch 99 is closed；The chamber 64 is equipped with the second normal open switch 100, covers described
Case lid 65 can be such that second normal open switch 100 is closed.Only it is closed in the first normal open switch 99 and the second normal open switch 100
When, pressure valve test device could start to work, and when avoiding the occurrence of dielectric leakage, medium overflows test chamber and test space.
Preferably, the case lid 65 and experiment lid 67 are all made of transparent material and are made, personal observations' test status easy to operation.
As shown in Figure 1 and Figure 4, the control assembly 5 includes controller 51, is connected to the display of the controller 51
52, button 53, stop button 54, force piece working station indicator 55, pressure adjustment button 56, medium box temperature is run to adjust
Button 57 and scram button 58.The display 52 includes basic display unit 521 and pressure display unit 522, temperature indicator 523,
Basic display unit 521 for showing current operation display interface, such as temperature, pressure, flow respectively with the graph of relation of time.
Pressure display unit 522 is used for the outlet pressure of the first pressure regulator valve of real-time display 95, and the temperature indicator 523 is used for real-time display
Temperature in medium box 1.
Press operation button 53, on basic display unit 521 will the first normal open switch 99 of display and the second normal open switch 100 whether
It is closed, and when any one is not closed in the first normal open switch 99 and the second normal open switch 100, prompts operating personnel, later will
Show next how current operation interface, such as prompt operating personnel operate.After completing all operations, basic display unit 521
By displays temperature, pressure, flow respectively with the graph of relation of time.
Press stop button, will be prompted to user next how pressure valve test device out of service.
Force piece working station indicator 55, for showing that force piece 3 pumps current working condition.The force piece work
Make there are two status indicator lamp 55 sets, including work light and stop indicator light, if pump is in running order, then work finger
Show that lamp is bright；The pump is in non-working condition, then it is bright to stop indicator light.
Pressure adjustment button 56 represents a pressure gear equipped with several and each pressure adjustment button 56, presses phase
The pressure adjustment button 56 answered, controller 51 will control the first pressure regulator valve 95 and open the 56 corresponding aperture of pressure adjustment button,
So that the outlet pressure of the first pressure regulator valve 95 maintains in corresponding pressure limit.Before starting test, pressure gear is completed
Selection.
Medium box temperature adjustment buttons 57 represent a temperature equipped with several and each medium box temperature adjustment buttons 57
Gear, presses corresponding medium box temperature adjustment buttons 57, and controller 51 will control heating component 93, cooling component 94 by medium
Temperature in case 1 is stablized within the scope of the temperature that the medium box temperature adjustment buttons 57 correspond to.Before starting test, temperature is completed
The selection of gear.
Scram button 58, in case of emergency directly stopping the work of pressure valve test device.
The control assembly 5 further includes storage unit 59, for storing in test process, each moment corresponding pressure limiting valve
The rate of discharge of 7 inlet temperature, the inlet pressure of pressure limiting valve 7 and pressure limiting valve 7.Personnel easy to operation enter according to pressure limiting valve 7
Mouth temperature, the inlet pressure of pressure limiting valve 7 and the rate of discharge of pressure limiting valve 7 and the correspondence of time, print test report.
The control assembly 5 further includes being connected to the keyboard 50 of the controller 51, is adjusted except through medium box temperature
Button 57, pressure adjustment button 56 control temperature in medium box 1, outside the aperture of the first pressure regulator valve 95, can also pass through respectively
50 input temp preset value of keyboard adjusts the temperature in medium box 1, is situated between specifically, being measured in real time by second temperature sensor 44
Temperature in matter case 1, and the temperature in medium box 1 is adjusted by heating component 93, cooling component 94, make temperature in medium box 1
It maintains in temperature preset value or more fluctuation range.Corresponding pressure preset can also be inputted by keyboard 50 adjusts the first tune
The aperture of the aperture of pressure valve 95, the second pressure regulator valve 96 so that the outlet pressure of the first pressure regulator valve 95 and the second pressure regulator valve 96 go out
Mouth pressure is respectively maintained in the fluctuation range up and down of corresponding pressure preset.
Six pressure limiting valves 7 can be tested simultaneously using pressure valve test device described in the present embodiment, before testing,
The temperature in medium box 1 is set to maintain in a certain temperature range by control assembly 5, the outlet pressure of the second pressure regulator valve 96 maintains
In a certain pressure limit, the outlet pressure of the first pressure regulator valve 95 is also maintained in corresponding pressure limit；Specific test process
It is as follows：
Pump work send the medium in medium box 1 to fuel feeding branch line 83, the first temperature sensor 41, first pressure
Force snesor 42 and flow sensor 43 measure the inlet temperature of pressure limiting valve 7, the inlet pressure of pressure limiting valve 7 and pressure limiting valve 7 respectively
Rate of discharge, and measuring signal is sent to controller 51, controller 51 is by the entrance temperature of the corresponding pressure valve of measuring signal
It spends, first pressure sensor 42 and the change curve of time are shown by basic display unit 521, personnel's real time inspection easy to operation.
When the inlet pressure of pressure limiting valve 7 is less than the specified Opening pressure of pressure limiting valve 7, pressure limiting valve 7 is closed, i.e.,
First chamber is not connected to second chamber；Over time, the inlet pressure of pressure limiting valve 7 gradually increases, in pressure limiting valve 7
When inlet pressure is more than or equal to the specified Opening pressure of pressure limiting valve 7, pressure limiting valve 7 is opened, and first chamber is connected to second chamber, the
The indoor medium of one chamber is back to medium box 1 by second chamber.
The test that pressure limiting valve 7 is completed after preset time, presses stop button, terminates current test.
Obviously, above-described embodiment of the utility model is used for the purpose of clearly illustrating the utility model example, and
It is not the restriction to the embodiment of the utility model.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
It is exhaustive.All any modification, equivalent and improvement made within the spirit and principle of the present invention etc., should be included in
Within the protection domain of the utility model claims.
Claims (16)
1. a kind of pressure valve test device, which is characterized in that including
Medium box (1), is inside contained with medium；
Test block (2) is equipped at least one and each test block (2) and is equipped at least one test chamber, each survey
Examination chamber is detachably equipped with a pressure valve, and each test chamber is formed by pipeline and the medium box (1) and recycled
Circuit；
Force piece (3) can realize that the medium flows in the circulation loop；
Test suite (4), the pressure and/or flow and/or temperature of the entrance for testing each pressure valve；And
Control assembly (5) is electrically connected with the force piece (3), test suite (4).
2. pressure valve test device according to claim 1, which is characterized in that the test suite (4) is every for measuring
When the inlet temperature of a pressure valve, the test suite (4) includes the first temperature biography for being connected to the control assembly (5)
Sensor (41).
3. pressure valve test device according to claim 1, which is characterized in that the test suite (4) is every for measuring
When the inlet pressure of a pressure valve, the test suite (4) includes the first pressure biography for being connected to the control assembly (5)
Sensor (42).
4. pressure valve test device according to claim 1, which is characterized in that the test suite (4) is every for measuring
When the rate of discharge of a pressure valve, the test suite (4) includes the flow sensor for being connected to the control assembly (5)
(43)。
5. pressure valve test device according to claim 1, which is characterized in that the entrance of each test chamber is equipped with
It is connected to the first pressure regulator valve (95) of the control assembly (5).
6. pressure valve test device according to claim 1, which is characterized in that the pressure valve is pressure limiting valve (7), described
Test chamber includes first chamber and second chamber, and the pressure valve can be connected to or cut off the first chamber and second chamber.
7. pressure valve test device according to claim 1, which is characterized in that further include Working rack (6), the work
Holder (6) includes the bin (61) that one side is equipped with switch gate (62), and the idler wheel (63) set on the bin (61) bottom；Institute
Medium box (1), the force piece (3) are stated in the bin (61), the test block (2) and the control assembly (5) are set
At the top of the bin (61).
8. pressure valve test device according to claim 7, which is characterized in that be equipped with chamber above the bin (61)
(64), the chamber (64) is rotatably connected to the case lid (65) that test chamber can be constituted with the chamber (64), described
Test block (2) is set in the test chamber.
9. pressure valve test device according to claim 8, which is characterized in that be equipped at least one in the chamber (64)
A test box (66), each test box (66) are rotatably connected to the examination that test space can be constituted with the test box (66)
Lid (67) is tested, the test block (2) is set in the test chamber and is fixedly arranged on the test box (66) bottom wall.
10. pressure valve test device according to claim 9, which is characterized in that be all provided on each test box (66)
Have the first normal open switch (99), cover experiment lid (67) corresponding with the test box (66) can make it is described first normally opened
(99) are switched to be closed；
The chamber (64) is equipped with the second normal open switch (100), cover the case lid (65) can make it is described second normally opened
(100) are switched to be closed.
11. pressure valve test device according to claim 1, which is characterized in that the medium is lubricating oil.
12. pressure valve test device according to claim 1, which is characterized in that connect the force piece (3) outlet and
The pipeline of the entrance of the test chamber is equipped with filter (97).
13. pressure valve test device according to claim 1, which is characterized in that the force piece (3) is pump.
14. pressure valve test device according to claim 1, which is characterized in that be equipped with and be connected in the medium box (1)
Heating component (93), cooling component (94) and the second temperature sensor (44) of the control assembly (5).
15. pressure valve test device according to claim 1, which is characterized in that medium box (1) outlet is equipped with second
Pressure regulator valve (96), and outlet pressure for measuring second pressure regulator valve (96) second pressure sensor (45), described
Two pressure regulator valves (96) and the second pressure sensor (45) are all connected to the control assembly (5).
16. pressure valve test device according to claim 1, which is characterized in that the control assembly (5) includes controller
(51), display (52), operation button (53), stop button (54), the force piece work shape of the controller (51) are connected to
State indicator light (55), oil pressure regulation button, medium box temperature adjustment buttons (57) and scram button (58)；
The test suite (4), force piece (3) are all connected to the controller (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820311778.8U CN208060139U (en) | 2018-03-07 | 2018-03-07 | A kind of pressure valve test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820311778.8U CN208060139U (en) | 2018-03-07 | 2018-03-07 | A kind of pressure valve test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208060139U true CN208060139U (en) | 2018-11-06 |
Family
ID=63991970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820311778.8U Active CN208060139U (en) | 2018-03-07 | 2018-03-07 | A kind of pressure valve test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208060139U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855191A (en) * | 2020-06-08 | 2020-10-30 | 合肥通用机械研究院有限公司 | Low-temperature safety valve performance test system and test method |
| CN111964900A (en) * | 2020-08-25 | 2020-11-20 | 浙江斯特隆科技有限公司 | Multi-channel pressure setting test bench |
-
2018
- 2018-03-07 CN CN201820311778.8U patent/CN208060139U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855191A (en) * | 2020-06-08 | 2020-10-30 | 合肥通用机械研究院有限公司 | Low-temperature safety valve performance test system and test method |
| CN111964900A (en) * | 2020-08-25 | 2020-11-20 | 浙江斯特隆科技有限公司 | Multi-channel pressure setting test bench |
| CN111964900B (en) * | 2020-08-25 | 2023-11-24 | 浙江斯特隆科技有限公司 | Multipath pressure setting test bench |
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