CN220230929U - Electromagnetic valve performance testing device - Google Patents
Electromagnetic valve performance testing device Download PDFInfo
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- CN220230929U CN220230929U CN202321797206.2U CN202321797206U CN220230929U CN 220230929 U CN220230929 U CN 220230929U CN 202321797206 U CN202321797206 U CN 202321797206U CN 220230929 U CN220230929 U CN 220230929U
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- 238000012360 testing method Methods 0.000 title claims abstract description 141
- 239000007788 liquid Substances 0.000 claims abstract description 405
- 238000011056 performance test Methods 0.000 claims abstract description 23
- 238000002347 injection Methods 0.000 claims description 67
- 239000007924 injection Substances 0.000 claims description 67
- 238000004146 energy storage Methods 0.000 claims description 40
- 238000001514 detection method Methods 0.000 claims description 39
- 238000007789 sealing Methods 0.000 abstract description 14
- 230000004044 response Effects 0.000 abstract description 13
- 238000012545 processing Methods 0.000 description 10
- 239000000243 solution Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of testing, and discloses a performance testing device for an electromagnetic valve. Then the vacuum power unit is used for vacuumizing the liquid inlet pipeline to form negative pressure in the liquid inlet pipeline; because the inside of the liquid storage unit is at atmospheric pressure, after the vacuum power unit stops vacuumizing, the liquid storage unit is communicated with the liquid inlet pipeline through the first liquid storage valve, and liquid in the liquid storage unit automatically enters the liquid inlet pipeline through the liquid outlet; and then the hydraulic power unit can be utilized to boost the pressure of the liquid inlet pipeline so as to test the performance of the electromagnetic valve to be tested. Because the air in the liquid inlet pipeline is exhausted before performance test is carried out on the electromagnetic valve to be tested, the liquid inlet pipeline is hydraulically pressurized by utilizing the hydraulic power unit, and the response speed is high; and compared with the air pressure pressurizing mode, the hydraulic pressurizing mode is used for sealing performance test, the response speed is high, and the test precision is higher.
Description
Technical Field
The utility model relates to the technical field of testing, in particular to a performance testing device for an electromagnetic valve.
Background
With the development of intelligent electric vehicles, an integrated brake control system gradually replaces a traditional vacuum booster brake system, and an electromagnetic valve is one of important parts of the integrated brake control system, so that the performance of the electromagnetic valve can directly influence the brake effect of the integrated brake control system and the running safety of the vehicle. Therefore, performance testing of solenoid valves becomes particularly important, particularly the sealing performance of solenoid valves.
When the electromagnetic valve performance testing device tests the sealing performance of the electromagnetic valve, the electromagnetic valve performance testing device is usually an airtight test, but has the problems of high requirement on gas compression rate, untimely response and low testing precision. Therefore, the electromagnetic valve is commonly used for hydraulic sealing test at present, and in order to avoid the air in the test pipeline from affecting response timeliness and test accuracy, the test pipeline is exhausted before the test begins. At present, the oil is pumped into the test pipeline for exhausting, and the defect of low exhaust efficiency is overcome.
Therefore, there is a need for a solenoid valve performance testing apparatus to solve the above-mentioned technical problems.
Disclosure of Invention
The utility model aims to provide a performance testing device for an electromagnetic valve, which can improve response timeliness of performance testing of the electromagnetic valve.
To achieve the purpose, the utility model adopts the following technical scheme:
a solenoid valve performance testing apparatus comprising:
the test pipeline comprises a liquid inlet pipeline;
the liquid outlet of the liquid storage unit is connected with one of the inlet and the outlet of the electromagnetic valve to be tested through the liquid inlet pipeline;
the detection unit is used for detecting parameters representing the performance of the electromagnetic valve to be detected;
the hydraulic power unit is used for hydraulically pressurizing the liquid inlet pipeline;
the liquid outlet of the liquid storage unit is selectively communicated with or disconnected from the liquid inlet pipeline by the first liquid storage valve;
the electromagnetic valve performance test device further comprises:
and the vacuum power unit is used for vacuumizing the liquid inlet pipeline.
As a preferable technical scheme of the electromagnetic valve performance testing device, the testing pipeline further comprises a liquid return pipeline, and the vacuum power unit is connected with the liquid return pipeline;
the top opening of the liquid storage unit can be connected with one end of the liquid return pipeline through the second liquid storage valve, and the other end of the liquid return pipeline is connected with the other one of the inlet and the outlet of the electromagnetic valve to be tested.
As a preferable technical solution of the above electromagnetic valve performance testing device, the vacuum power unit includes:
the vacuum pump is connected with the liquid inlet pipeline or the liquid return pipeline through a vacuumizing pipeline;
the vacuum valve is arranged on the vacuumizing pipeline and used for controlling the vacuumizing port of the vacuum pump to be communicated with or disconnected from the vacuumizing pipeline;
and the vacuum degree detection piece is used for detecting the vacuum degree in the vacuumizing pipeline.
As a preferable technical solution of the above electromagnetic valve performance test device, the hydraulic power unit includes:
the rodless cavity of the hydraulic cylinder is communicated with the liquid inlet pipeline;
and the electric driving piece is used for driving the piston rod of the hydraulic cylinder to stretch and retract.
As a preferable technical scheme of the electromagnetic valve performance testing device, the electromagnetic valve performance testing device further comprises an energy storage unit, and the energy storage unit comprises:
the energy accumulator is connected with an energy storage pipeline;
the energy storage valve is arranged on the energy storage pipeline and used for controlling the on-off of the energy storage pipeline;
the liquid inlet pipeline is provided with one energy storage unit, and the energy storage pipeline of the energy storage unit corresponding to the liquid inlet pipeline is connected with the liquid return pipeline.
As a preferable technical solution of the above electromagnetic valve performance testing apparatus, the detecting unit includes:
the two test pressure detection pieces are respectively arranged on the liquid inlet pipeline and the liquid return pipeline, the test pressure detection pieces arranged on the liquid inlet pipeline are used for detecting the pressure in the liquid inlet pipeline, and the test pressure detection pieces arranged on the liquid return pipeline are used for detecting the pressure in the liquid return pipeline;
and the flow detection piece is used for detecting the flow in the liquid inlet pipeline.
As a preferable technical solution of the above electromagnetic valve performance testing apparatus, the electromagnetic valve performance testing apparatus further includes:
the test reversing valve group can selectively enable the liquid inlet pipeline to be connected with an inlet of the electromagnetic valve to be tested and the liquid return pipeline to be connected with an outlet of the electromagnetic valve to be tested, or enable the liquid inlet pipeline to be connected with the outlet of the electromagnetic valve to be tested and the liquid return pipeline to be connected with the inlet of the electromagnetic valve to be tested.
As a preferable technical scheme of the electromagnetic valve performance testing device, the electromagnetic valve performance testing device further comprises a test valve mounting unit, wherein the test valve mounting unit comprises a test tool, and the test tool is provided with two test runners;
one end of one of the test flow channels is detachably connected with the liquid inlet pipeline, and the other end of the test flow channel is connected with one of an inlet and an outlet of the electromagnetic valve to be tested;
one end of the other test flow channel is detachably connected with the liquid return pipeline, and the other end of the other test flow channel is connected with the other one of the inlet and the outlet of the electromagnetic valve to be tested.
As a preferable technical scheme of the electromagnetic valve performance testing device, the electromagnetic valve performance testing device further comprises a liquid injection unit, and the liquid injection unit comprises:
the liquid injection box is connected with the liquid storage unit through a liquid injection pipeline and is used for storing liquid for testing;
the liquid injection pump is arranged on the liquid injection pipeline;
the liquid injection valve is arranged on the liquid injection pipeline and used for controlling the on-off of the liquid injection pipeline.
As a preferable technical scheme of the electromagnetic valve performance testing device, the liquid injection unit further includes:
and the liquid level detection unit is used for detecting the liquid level in the liquid storage unit.
The utility model has the beneficial effects that: according to the electromagnetic valve performance testing device provided by the utility model, before performance testing is carried out on the electromagnetic valve to be tested, a certain amount of liquid is placed in the liquid storage unit, and the liquid outlet of the liquid storage unit is disconnected from the liquid inlet pipeline through the first liquid storage valve. Then the vacuum power unit is used for vacuumizing the liquid inlet pipeline to form negative pressure in the liquid inlet pipeline; because the interior of the liquid storage unit is at atmospheric pressure, after the vacuum power unit stops vacuumizing, the liquid storage unit is communicated with the liquid inlet pipeline through the first liquid storage valve, and liquid in the liquid storage unit automatically enters the liquid inlet pipeline through the liquid outlet. And then the hydraulic power unit can be utilized to boost the pressure of the liquid inlet pipeline so as to test the performance of the electromagnetic valve to be tested.
Because the air in the liquid inlet pipeline is exhausted before performance test is carried out on the electromagnetic valve to be tested, the liquid inlet pipeline is hydraulically pressurized by utilizing the hydraulic power unit, and the response speed is high; and the sealing performance test is carried out in a hydraulic pressurizing mode, so that the response speed is high and the test precision is higher compared with the sealing performance test carried out in a pneumatic pressurizing mode.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic diagram of a solenoid valve performance test apparatus provided by an embodiment of the present utility model;
fig. 2 is a cross-sectional view of a test valve mounting unit provided by an embodiment of the present utility model.
In the figure:
100. an electromagnetic valve to be tested; 101. testing a tool; 1011. testing a flow channel; 1012. a mounting channel; 102. a fixing plate; 103. a fastener; 104. a first seal; 105. a second seal;
201. a liquid inlet pipeline; 202. a liquid return pipeline; 300. a vacuumizing pipeline; 400. a control pipeline; 500. an energy storage pipeline; 601. a first reversing line; 602. a second reversing line; 603. a first pipeline; 604. a second pipeline; 700. a liquid injection pipeline;
1. a vacuum power unit; 11. a vacuum pump; 12. a vacuum valve; 13. a vacuum degree detecting member;
2. a hydraulic power unit; 21. an electric driving member; 22. a hydraulic cylinder; 23. controlling the pressure detecting member;
3. a liquid storage unit; 31. a second reservoir valve; 32. a first reservoir valve; 33. a pressure release valve; 34. a liquid discharge valve;
4. a liquid injection unit; 41. a liquid injection box; 42. a liquid injection pump; 43. a liquid injection valve; 44. a ball valve;
51. testing the pressure detecting member; 52. a flow rate detecting member;
61. an accumulator; 62. an energy storage valve;
71. a first reversing valve; 72. a second reversing valve;
81. a first high-pressure shut-off valve; 82. a second high-pressure shut-off valve;
91. a safety valve; 92. and a filtering unit.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1, the embodiment provides a performance testing device for an electromagnetic valve, which comprises a testing pipeline, a liquid storage unit 3, a detection unit, a vacuum power unit 1 and a hydraulic power unit 2, wherein the testing pipeline comprises a liquid inlet pipeline 201, and a liquid outlet of the liquid storage unit 3 is connected with one of an inlet and an outlet of the electromagnetic valve 100 to be tested through the liquid inlet pipeline 201; the detection unit is used for detecting parameters representing the performance of the electromagnetic valve 100 to be detected; the vacuum power unit 1 is used for vacuumizing the liquid inlet pipeline 201; the liquid outlet of the liquid storage unit 3 is connected with one of the inlet and the outlet of the electromagnetic valve 100 to be tested through a liquid inlet pipeline 201, and the liquid outlet of the liquid storage unit 3 is selectively communicated with or disconnected from the liquid inlet pipeline 201 through a first liquid storage valve 32; the vacuum power unit 1 is used for vacuumizing the liquid inlet pipeline 201; the hydraulic power unit 2 is used for hydraulically pressurizing the liquid inlet pipeline 201.
Before performance testing of the solenoid valve 100 to be tested, a certain amount of liquid, such as brake fluid, is placed in the liquid storage unit 3, and the liquid storage unit 3 is disconnected from the liquid inlet pipeline 201 through the first liquid storage valve 32. Then the vacuum power unit 1 is used for vacuumizing the liquid inlet pipeline 201 to form negative pressure in the liquid inlet pipeline 201; because the inside of the liquid storage unit 3 is at atmospheric pressure, after the vacuum power unit 1 stops vacuumizing, the liquid storage unit 3 is communicated with the liquid inlet pipeline 201 through the first liquid storage valve 32, and liquid in the liquid storage unit 3 automatically enters the liquid inlet pipeline 201 through the liquid outlet. The hydraulic power unit 2 can then be used to boost the pressure in the inlet line 201 to test the performance of the solenoid valve 100 under test.
Because the air in the liquid inlet pipeline 201 is exhausted before the performance test of the electromagnetic valve 100 to be tested is performed, the liquid inlet pipeline 201 is hydraulically pressurized by the hydraulic power unit 2, and the response speed is high; and the sealing performance test is carried out in a hydraulic pressurizing mode, so that the response speed is high and the test precision is higher compared with the sealing performance test carried out in a pneumatic pressurizing mode.
Further, the test pipeline further comprises a liquid return pipeline 202, the top opening of the liquid storage unit 3 is connected with one end of the liquid return pipeline 202 through the second liquid storage valve 31, and the other end of the liquid return pipeline 202 is connected with the other one of the inlet and the outlet of the solenoid valve 100 to be tested, so that liquid in the liquid inlet pipeline 201 can flow back to the liquid storage unit 3 through the liquid return pipeline 202. Alternatively, the vacuum power unit 1 is connected to the liquid return pipeline 202, so that liquid leakage through the vacuum power unit 1 during performance testing of the solenoid valve 100 to be tested can be prevented.
Illustratively, the second liquid storage valve 31 and the first liquid storage valve 32 are two-position two-way solenoid valves, and when the second liquid storage valve 31 is powered off, the top opening is communicated with the liquid return pipeline 202; when the second liquid storage valve 31 is powered on, the top opening is disconnected from the liquid return pipeline 202. When the first liquid storage valve 32 is powered off, the liquid outlet is communicated with the liquid inlet pipeline 201; when the first liquid storage valve 32 is powered on, the liquid outlet is disconnected from the liquid inlet pipeline 201.
When the vacuum is applied to the liquid inlet pipeline 201, the second liquid storage valve 31 and the first liquid storage valve 32 are closed; after the vacuum pumping of the liquid inlet pipeline 201 is completed, the vacuum power unit 1 is controlled to stop working, the liquid inlet pipeline 201 is under negative pressure, the liquid storage unit 3 is under atmospheric pressure, the second liquid storage valve 31 and the first liquid storage valve 32 are opened, and liquid in the liquid storage unit 3 automatically enters the liquid inlet pipeline 201.
The vacuum power unit 1 comprises a vacuum pump 11, a vacuum valve 12 and a vacuum degree detection piece 13, wherein the vacuum pump 11 is connected with the liquid return pipeline 202 through a vacuumizing pipeline 300, the vacuum valve 12 and the vacuum degree detection piece 13 are both arranged on the vacuumizing pipeline 300, the vacuum valve 12 is used for controlling the on-off of the vacuumizing pipeline 300, and the vacuum degree detection piece 13 is used for detecting the vacuum degree in the vacuumizing pipeline 300. In other embodiments, the vacuum pump 11 may also be connected to the liquid inlet line 201 through the evacuation line 300.
Illustratively, the vacuum degree detecting member 13 is a pressure sensor, and the vacuum valve 12 is located between the vacuum degree detecting member 13 and the vacuum pump 11. The vacuum valve 12 is a two-position three-way electromagnetic valve, and when the vacuum valve 12 is powered off, the liquid return pipeline 202 is communicated with the outside atmosphere; when the vacuum valve 12 is powered on, the liquid return pipeline 202 is communicated with the air extraction opening of the vacuum pump 11, so that the electromagnetic valve 100 to be tested can be kept in an open state, and the vacuum pump 11 is utilized to vacuumize the liquid return pipeline 202 and the liquid inlet loop 201. When the pressure of the test pipeline needs to be relieved, the vacuum valve 12 is controlled to lose electricity, so that the liquid return pipeline 202 is communicated with the outside atmosphere. To reduce noise, the valve port of the vacuum valve 12 that communicates with the outside atmosphere through a muffler.
Further, the hydraulic power unit 2 includes a hydraulic cylinder 22 and an electric driving member 21, wherein a rodless cavity of the hydraulic cylinder 22 is communicated with the liquid inlet pipeline 201, and the electric driving member 21 is used for driving a piston rod of the hydraulic cylinder 22 to stretch and retract. Illustratively, the electric drive 21 is a servo cylinder. Because the air in the liquid inlet pipeline 201 is exhausted before the performance test of the electromagnetic valve 100 to be tested is performed, when the electric driving piece 21 is used for driving the piston rod of the hydraulic cylinder 22 to stretch and retract so as to hydraulically pressurize the liquid inlet pipeline 201, the response speed is high, and the output stroke control precision of the hydraulic cylinder 22 is high. Optionally, the rodless chamber of the hydraulic cylinder 22 is connected to the liquid inlet pipe 201 through a control pipe 400, and a control pressure detecting member 23 is provided at the outlet of the rodless chamber of the hydraulic cylinder 22 for detecting the output pressure of the rodless chamber of the hydraulic cylinder 22.
Further, in order to facilitate the liquid in the liquid storage unit 3 to be discharged to clean the liquid storage unit 3, a liquid outlet is arranged at the bottom of the liquid storage unit 3, and the liquid outlet is communicated with the liquid injection tank 41 through a liquid outlet valve 34. Illustratively, the drain valve 34 is a manual valve.
Further, in order to be convenient for carry out the pressure release to the stock solution unit 3, the top of stock solution unit 3 is equipped with the pressure release mouth, and the pressure release mouth is through relief valve 33 and external atmosphere intercommunication or disconnection. Illustratively, the pressure relief valve 33 is a two-position two-way electromagnetic valve, and when the pressure relief valve 33 is powered off, the pressure relief port is disconnected from the external atmosphere; when the pressure relief valve 33 is powered on, the pressure relief port is in communication with the outside atmosphere. To reduce noise during pressure relief, a muffler is connected to a port of the relief valve 33 that communicates with the outside atmosphere.
Further, a safety valve 91 is provided on the liquid inlet pipeline 201, so as to facilitate timely pressure relief when the pressure in the liquid inlet pipeline 201 is too high.
Further, the liquid return pipe 202 is provided with a filtering unit 92 for filtering the liquid flowing in the liquid return pipe 202. Illustratively, when the fluid flowing in the test line is brake fluid, the filter unit 92 is an oil filter.
Further, the electromagnetic valve performance testing device further comprises a testing reversing valve group, and the testing reversing valve group can selectively enable the liquid inlet pipeline 201 to be connected with the inlet of the electromagnetic valve 100 to be tested and the liquid return pipeline 202 to be connected with the outlet of the electromagnetic valve 100 to be tested, or enable the liquid inlet pipeline 201 to be connected with the outlet of the electromagnetic valve 100 to be tested and the liquid return pipeline 202 to be connected with the inlet of the electromagnetic valve 100 to be tested.
Specifically, the test reversing valve set includes a first reversing valve 71 and a second reversing valve 72, where the first reversing valve 71 and the second reversing valve 72 are two-position three-way electromagnetic valves, a first oil port of the first reversing valve 71 is connected to the liquid return pipeline 202, a second oil port of the first reversing valve 71 is connected to an oil inlet and outlet port of the electromagnetic valve 100 to be tested through a first pipeline 603, and a third oil port of the first reversing valve 71 is connected to a second oil port of the second reversing valve 72 through a first reversing pipeline 601; the first oil port can be selectively communicated with the second oil port or the third oil port. When the first reversing valve 71 is in a power-off state, the first oil port and the second oil port of the first reversing valve 71 are communicated and disconnected from the third oil port. When the first reversing valve 71 is in the power-on state, the first oil port and the third oil port of the first reversing valve 71 are communicated and disconnected from the second oil port.
The first oil port of the second reversing valve 72 is connected with the liquid inlet pipeline 201, the second oil port of the second reversing valve 72 is connected with the other oil port of the solenoid valve 100 to be tested through a second pipeline 604, and the third oil port of the second reversing valve 72 is connected with the second oil port of the first reversing valve 71 through a second reversing pipeline 602. When the second reversing valve 72 is in the power-off state, the first oil port of the second reversing valve 72 is communicated with the third oil port of the second reversing valve 72, and is disconnected from the second oil port of the second reversing valve 72. The second reversing valve 72 is in an energized state, and the first port of the second reversing valve 72 is in communication with the third port of the second reversing valve 72 and is disconnected from the second port of the second reversing valve 72.
When both the first reversing valve 71 and the second reversing valve 72 are in the power-off state, the liquid in the liquid inlet pipeline 201 sequentially passes through the second reversing valve 72 and the second pipeline 604 to enter the solenoid valve 100 to be tested, and the liquid flowing out of the solenoid valve 100 to be tested sequentially passes through the first pipeline 603 and the first reversing valve 71 to enter the liquid inlet pipeline 201.
When both the first reversing valve 71 and the second reversing valve 72 are in the power-on state, the liquid in the liquid inlet pipeline 201 sequentially passes through the second reversing pipeline 602 and the first pipeline 603 to enter the solenoid valve 100 to be tested, and the liquid flowing out of the solenoid valve 100 to be tested sequentially passes through the second pipeline 604, the first reversing pipeline 601 and the first reversing valve 71 to enter the liquid inlet pipeline 201.
Further, the liquid return pipeline 202 is provided with a first high-pressure stop valve 81, and the liquid inlet pipeline 201 is provided with a second high-pressure stop valve 82. Illustratively, the first high-pressure stop valve 81 and the second high-pressure stop valve 82 are two-position two-way electromagnetic valves, when the first high-pressure stop valve 81 is powered off, the liquid inlet pipeline 201 is connected, and when the first high-pressure stop valve 81 is powered on, the liquid inlet pipeline 201 is disconnected; when the second high-pressure stop valve 82 is powered off, the liquid return pipeline 202 is communicated, and when the second high-pressure stop valve 82 is powered on, the liquid return pipeline 202 is disconnected. When the sealing performance of the electromagnetic valve 100 to be tested is tested, the first high-pressure stop valve 81 is powered on, and the second high-pressure stop valve 82 is powered off.
Further, the detection unit includes two test pressure detection pieces 51, which are respectively disposed on the liquid inlet pipeline 201 and the liquid return pipeline 202, the test pressure detection piece 51 disposed on the liquid inlet pipeline 201 is used for detecting the pressure in the liquid inlet pipeline 201 and is located between the second high pressure stop valve 82 and the second reversing valve 72, and the test pressure detection piece 51 disposed on the liquid return pipeline is used for detecting the pressure in the liquid return pipeline 202 and is located between the first high pressure stop valve 81 and the first reversing valve 71; the flow rate detecting member 52 is used for detecting the flow rate in the liquid inlet pipeline 201. Illustratively, the test pressure sensing element 51 is a pressure sensor.
Optionally, the detection unit further comprises a flow detection member 52 for detecting the flow in the feed line 201. Illustratively, the flow sensing element 52 is a flow sensor.
Further, the electromagnetic valve performance testing device further comprises an energy storage unit, the liquid inlet pipeline 201 and the liquid return pipeline 202 are respectively provided with the energy storage unit, the energy storage unit comprises an energy storage device 61 and an energy storage valve 62, wherein the energy storage device 61 is connected with an energy storage pipeline 500, and the energy storage valve 62 is arranged on the energy storage pipeline 500 and used for controlling the on-off of the energy storage pipeline 500. The energy storage pipeline 500 of the energy storage unit corresponding to the liquid inlet pipeline 201 is connected with the liquid inlet pipeline 201, and the energy storage pipeline 500 of the energy storage unit corresponding to the liquid return pipeline 202 is connected with the liquid return pipeline 202. When the accumulator valve 62 is opened, the liquid pressure during testing can be more stable, and the impact is reduced. Illustratively, the energy storage valve 62 is a two-position two-way solenoid valve, and when the energy storage valve 62 is powered off, the energy storage pipeline 500 is disconnected; when the energy storage valve 62 is powered, the energy storage pipeline 500 is communicated.
When the sealing performance of the electromagnetic valve is tested, the liquid in the liquid inlet pipeline 201 is returned to the liquid storage unit 3 through the liquid return pipeline 202, so that repeated tests are performed. During the test, there is a loss of liquid, so that the liquid level in the liquid storage unit 3 will drop after the first test, which may cause that the liquid in the liquid storage unit 3 is injected into the liquid inlet pipeline 201 by using a negative pressure liquid injection mode after the liquid inlet pipeline 201 is vacuumized each time, and when the liquid level in the liquid storage unit 3 is too low, the liquid in the liquid storage unit 3 may not be injected into the liquid inlet pipeline 201.
In order to solve the above technical problems, the electromagnetic valve performance testing device provided in this embodiment further includes a liquid level detection unit and a liquid injection unit 4, where the liquid level detection unit is used to detect the liquid level in the liquid storage unit 3; the liquid filling unit 4 can be selectively connected with or disconnected from the liquid storage unit 3, and the liquid filling unit 4 is used for supplementing liquid for the liquid storage unit 3.
Before vacuumizing the liquid storage unit 3, the liquid level in the liquid storage unit 3 is detected by using the liquid level detection unit, when the liquid level in the liquid storage unit 3 does not reach the standard, the liquid injection unit 4 is controlled to be communicated with the liquid storage unit 3, the liquid level in the liquid storage unit 3 is the same before vacuumizing each time by using the liquid injection unit 4 to supplement liquid for the liquid storage unit 3, the liquid in the liquid storage unit 3 can enter the liquid inlet pipeline 201 through the bottom outlet by using the negative pressure liquid injection principle, and the accuracy in the test is improved under the premise of realizing consistency of vacuum degree in vacuumizing by using the negative pressure liquid injection principle. Illustratively, the liquid level detection unit is a liquid level sensor.
Specifically, the liquid injection unit 4 includes a liquid injection pump 42, a liquid injection tank 41 and a liquid injection valve 43, wherein the liquid injection tank 41 is connected with the liquid storage unit 3 through a liquid injection pipeline 700, the liquid injection pump 42 and the liquid injection valve 43 are both arranged on the liquid injection pipeline 700, and the liquid injection valve 43 is used for controlling the on-off of the liquid injection pipeline 700. Illustratively, the liquid injection valve 43 is disposed between the liquid injection pump 42 and the liquid injection tank 41, the liquid injection valve 43 is a two-position two-way electromagnetic valve, and the liquid injection pipeline 700 is disconnected when the liquid injection valve 43 is in a power-off state; when the priming valve 43 is in the powered state, the priming line 700 is in communication.
In order to facilitate maintenance of the electromagnetic valve performance test device, the ball valve 44 is arranged on the liquid injection pipeline 700, the ball valve 44 is positioned between the liquid injection valve 43 and the liquid injection box 41, and the liquid return pipeline 202 is connected with the liquid injection box 41 through the ball valve 44.
Further, as shown in fig. 2, for the electromagnetic valve performance test device further includes a test valve mounting unit, the test valve mounting unit includes a test tool 101, the test tool 101 has two test flow channels 1011, one end of one test flow channel 1011 is detachably connected with the liquid inlet pipeline 201, and the other end is connected with one of the inlet and the outlet of the electromagnetic valve 100 to be tested; one end of the other test flow channel 1011 is detachably connected with the liquid return pipeline 202, and the other end is connected with the other one of the inlet and the outlet of the electromagnetic valve 100 to be tested, so that different test tools can be replaced according to requirements, and performance tests of different types of electromagnetic valves 100 to be tested can be realized.
Specifically, two test flow channels 1011 and one mounting channel 1012 are arranged on the test tool 101, the mounting channel 1012 is perpendicular to the test flow channels 1011, the mounting channel 1012 is a stepped hole, the small diameter end of the stepped hole is communicated with one of the test flow channels 1011, the other test flow channel 1011 extends to the side wall of the large diameter section of the stepped hole, one end of the electromagnetic valve 100 to be tested is inserted into the mounting channel 1012 and is abutted to the stepped surface of the stepped hole, so that the two test flow channels 1011 are respectively communicated with the two inlets and the two outlets of the electromagnetic valve 100 to be tested, and the other end of the electromagnetic valve 100 to be tested is arranged outside the test tool 101. The test valve installation unit further comprises a fixing plate 102, the fixing plate 102 is sleeved at one end of the electromagnetic valve 100 to be tested, which is arranged outside the test tool 101, a boss is arranged on the outer wall of the electromagnetic valve 100 to be tested, the fixing plate 102 is connected to the test tool 101 through a fastener 103 such as a bolt, and the boss is clamped between the fixing plate 102 and the test tool 101, so that the electromagnetic valve 100 to be tested is installed.
In order to ensure the sealing performance between the solenoid valve 100 to be tested and the test fixture 101, the solenoid valve 100 to be tested is provided with an abutting surface facing the step surface, and a first sealing piece 104 is clamped between the abutting surface and the step surface; the mounting channel 1012 has a stepped surface at an end thereof adjacent the mounting plate 102 with the second seal 105 sandwiched therebetween. Illustratively, the first seal 104 and the second seal 105 are both sealing rings.
Further, the electromagnetic valve performance testing device further comprises a data acquisition processing unit and a power supply module, wherein the data acquisition processing unit comprises a data acquisition processing display module and a control instruction output module, the power supply module is used for supplying power to the control instruction output module, the data acquisition processing display module, each pressure detection part, each electromagnetic valve, the vacuum pump 11, the liquid injection pump 42, the flow detection part 52, the servo cylinder and the like, the control instruction output module is used for controlling the work of each electromagnetic valve, the liquid injection pump 42, the vacuum pump 11, the servo cylinder and the like, and the data acquisition processing display module is used for receiving and displaying the measurement data of the flow detection part 52 and each pressure detection part and the like.
Illustratively, the electromagnetic valve performance testing apparatus provided in this embodiment is described in detail below with reference to fig. 1.
One end of the liquid return pipeline 202 is communicated with the top opening of the liquid storage unit 3, the other end of the liquid return pipeline 202 is connected with the first oil port of the first reversing valve 71, the first high-pressure stop valve 81, the filter unit 92 and the second liquid storage valve 31 which are sequentially arranged are arranged on the liquid return pipeline 202 along the direction from the first reversing valve 71 to the top opening of the liquid storage unit 3, the liquid return pipeline 202 between the first high-pressure stop valve 81 and the first oil port of the first reversing valve 71 is connected with a test pressure detection part 51 and an energy storage unit, one end of the vacuumizing pipeline 300 is connected with the liquid return pipeline 202 between the second liquid storage valve 31 and the filter unit 92, one end of the liquid injection pipeline 700 is connected to the liquid return pipeline 202 between the top opening of the liquid storage unit 3 and the second liquid storage valve 31, and the liquid return pipeline 202 between the second liquid storage valve 31 and the filter unit 92 is communicated with the inlet of the ball valve 44, so that liquid in the liquid return pipeline 202 can be discharged into the liquid injection box 41 through the ball valve 44 when the electromagnetic valve performance test device is maintained.
One end of the liquid inlet pipeline 201 is connected with the liquid outlet of the liquid storage unit 3, the other end of the liquid inlet pipeline 201 is connected with the first oil port of the second reversing valve 72, the liquid inlet pipeline 201 is provided with a first liquid storage valve 32, a flow detection piece 52 and a second high-pressure stop valve 82 which are sequentially arranged along the direction from the liquid outlet of the liquid storage unit 3 to the second reversing valve 72, the rodless cavity of the hydraulic cylinder 22 and the inlet of the safety valve 91 are connected with the liquid inlet pipeline 201 between the first liquid storage valve 32 and the flow detection piece 52, and the liquid inlet pipeline 201 between the second high-pressure stop valve 82 and the first oil port of the second reversing valve 72 is connected with a test pressure detection piece 51 and an energy storage unit.
Taking a normally open electromagnetic valve as an example, the following process of testing the performance of the normally open electromagnetic valve by using the electromagnetic valve performance testing device provided in this embodiment in combination with fig. 1 is as follows:
test preparation stage: a control command output module in the data acquisition processing unit sends a command to control the liquid injection valve to be electrified, a ball valve 44 is opened, the liquid injection pump 42 is controlled to work, liquid in the liquid injection tank 41 is injected into the liquid storage unit 3 through the ball valve 44, the liquid injection valve 43 and the liquid injection pump 42, then the ball valve 44 is closed, the liquid injection valve 43 is controlled to lose electricity, and the liquid injection pump 42 stops working; the second reservoir valve 31 and the first reservoir valve 32 are controlled to be closed, and the first reversing valve 71 and the second reversing valve 72 are in a power-off state.
After that, the vacuum valve 12 is opened and the vacuum pump 11 is started, the liquid inlet pipeline 201, the liquid return pipeline 202, the first pipeline 603, the second pipeline 604, the first reversing pipeline 601, the second reversing pipeline 602 and the test valve mounting unit are vacuumized, the vacuum degree in the test pipeline is detected by the vacuum degree detecting member 13 in real time, when the vacuum degree in the test pipeline reaches the requirement, the vacuum pump 11 is closed, the first liquid storage valve 32 is opened, and the liquid in the liquid storage unit 3 is sucked into the liquid inlet pipeline 201, the solenoid valve 100 to be tested and the rodless cavity of the hydraulic cylinder 22.
After that, the first high-pressure stop valve 81 is closed, the servo cylinder drives the piston rod of the hydraulic cylinder 22 to extend, the pressure in the liquid inlet pipeline 201 is increased, when the pressure in the liquid inlet pipeline 201 reaches the set pressure, the first high-pressure stop valve 81 and the second liquid storage valve 31 are opened, the liquid in the liquid return pipeline 202 is released, and the liquid flows back to the liquid storage unit 3 through the liquid return pipeline 202. Repeating the above operation for several times to complete the air discharge in the test pipeline.
The upper and lower electric response test stage of the solenoid valve 100 to be tested: the control instruction output module in the data acquisition processing unit sends an instruction to electrify the electromagnetic valve 100 to be detected, the current and the voltage of the coil of the electromagnetic valve 100 to be detected are detected in real time, and the current curve and the voltage curve of the coil of the electromagnetic valve 100 to be detected are displayed through the data acquisition processing display module in the data acquisition processing unit, so that the response condition of the electromagnetic valve 100 to be detected is known.
When the electromagnetic valve 100 to be tested is tested for the upper and lower electric response, the electromagnetic valve can be tested under the no-load working condition and the loaded working condition respectively. The idle condition refers to the hydraulic cylinder 22 not being pressurized; the load condition refers to the pressurization of the hydraulic cylinder 22.
And a sealing performance testing stage of the electromagnetic valve: the control instruction output module in the data acquisition processing unit sends an instruction to control the first liquid storage valve 32 to be closed and the electromagnetic valve 100 to be tested to be electrified, meanwhile, the first high-pressure stop valve 81 is kept in a closed state, meanwhile, the servo cylinder is controlled to work, the control pressure detection piece 23 on the control pipeline 400 is utilized to detect the pressure in the control pipeline 400 and the pressure in the test pipeline in real time, and the liquid in the control pipeline 400 enters the electromagnetic valve 100 to be tested through the second high-pressure stop valve 82 and the second reversing valve 72, so that the electromagnetic valve 100 to be tested is pressurized, stabilized and maintained. In the process, the pressure is detected by the test pressure detecting piece 51 in the liquid inlet pipeline 201 in real time, meanwhile, the flow is detected by the flow detecting piece 52 in the liquid inlet pipeline 201, and the pressure in the liquid inlet pipeline 201, the change condition of the flow and time in the liquid inlet pipeline 201 are recorded to form a pressure-flow-time change curve. After the test data are collected, the control instruction output module controls the solenoid valve 100 to be tested to be powered down, and opens the second high-pressure stop valve 82, so that the liquid in the liquid inlet pipeline 201 returns to the liquid storage unit 3 through the liquid return pipeline 202.
The test mode of the normally closed electromagnetic valve is similar to that of the normally open electromagnetic valve, and the description is not repeated here.
Furthermore, the foregoing description of the preferred embodiments and the principles of the utility model is provided herein. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Claims (10)
1. A solenoid valve performance testing apparatus comprising:
a test line comprising a liquid inlet line (201);
the liquid outlet of the liquid storage unit (3) is connected with one of the inlet and the outlet of the electromagnetic valve (100) to be tested through the liquid inlet pipeline (201);
the detection unit is used for detecting parameters representing the performance of the electromagnetic valve (100) to be detected;
the hydraulic power unit (2) is used for hydraulically pressurizing the liquid inlet pipeline (201);
a first liquid storage valve (32), wherein the first liquid storage valve (32) selectively connects or disconnects a liquid outlet of the liquid storage unit (3) with the liquid inlet pipeline (201);
the electromagnetic valve performance testing device is characterized by further comprising:
and the vacuum power unit (1) is used for vacuumizing the liquid inlet pipeline (201).
2. The electromagnetic valve performance test device according to claim 1, characterized in that the test line further comprises a liquid return line (202), the vacuum power unit (1) being connected to the liquid return line (202);
the top opening of the liquid storage unit (3) is connected with one end of the liquid return pipeline (202) through a second liquid storage valve (31), and the other end of the liquid return pipeline (202) is connected with the other one of the inlet and the outlet of the electromagnetic valve (100) to be tested.
3. The electromagnetic valve performance test apparatus according to claim 2, wherein the vacuum power unit (1) includes:
the vacuum pump (11) is connected with the liquid inlet pipeline (201) or the liquid return pipeline (202) through a vacuumizing pipeline (300);
the vacuum valve (12) is arranged on the vacuumizing pipeline (300) and is used for controlling the vacuumizing port of the vacuum pump (11) to be communicated with or disconnected from the vacuumizing pipeline (300);
and the vacuum degree detection piece (13) is used for detecting the vacuum degree in the vacuumizing pipeline (300).
4. The electromagnetic valve performance test apparatus according to claim 2, wherein the hydraulic power unit (2) includes:
the rodless cavity of the hydraulic cylinder (22) is communicated with the liquid inlet pipeline (201);
and the electric driving piece (21) is used for driving the piston rod of the hydraulic cylinder (22) to stretch and retract.
5. The solenoid valve performance test apparatus of claim 2, further comprising an energy storage unit comprising:
an energy accumulator (61), wherein the energy accumulator (61) is connected with an energy storage pipeline (500);
the energy storage valve (62) is arranged on the energy storage pipeline (500) and used for controlling the on-off of the energy storage pipeline (500);
the liquid inlet pipeline (201) is provided with one energy storage unit, and the energy storage pipeline (500) of the energy storage unit corresponding to the liquid inlet pipeline (201) is connected with the liquid inlet pipeline (201).
6. The electromagnetic valve performance test apparatus according to claim 2, wherein the detection unit includes:
the two test pressure detection pieces (51) are respectively arranged on the liquid inlet pipeline (201) and the liquid return pipeline (202), the test pressure detection pieces (51) arranged on the liquid inlet pipeline (201) are used for detecting the pressure in the liquid inlet pipeline (201), and the test pressure detection pieces (51) arranged on the liquid return pipeline (202) are used for detecting the pressure in the liquid return pipeline (202);
and the flow detection piece (52) is used for detecting the flow in the liquid inlet pipeline (201).
7. The electromagnetic valve performance testing apparatus according to claim 2, further comprising:
the test reversing valve group can selectively enable the liquid inlet pipeline (201) to be connected with an inlet of the electromagnetic valve (100) to be tested and the liquid return pipeline (202) to be connected with an outlet of the electromagnetic valve (100) to be tested, or enable the liquid inlet pipeline (201) to be connected with an outlet of the electromagnetic valve (100) to be tested and the liquid return pipeline (202) to be connected with the inlet of the electromagnetic valve (100) to be tested.
8. The solenoid valve performance test device according to claim 2, further comprising a test valve mounting unit comprising a test fixture (101), the test fixture (101) having two test flow channels (1011);
one end of one of the test flow channels (1011) is detachably connected with the liquid inlet pipeline (201), and the other end of the test flow channel is connected with one of an inlet and an outlet of the electromagnetic valve (100) to be tested;
one end of the other test flow channel (1011) is detachably connected with the liquid return pipeline (202), and the other end is connected with the other one of the inlet and the outlet of the electromagnetic valve (100) to be tested.
9. The electromagnetic valve performance testing apparatus according to any one of claims 1 to 8, further comprising a liquid injection unit (4), the liquid injection unit (4) comprising:
the liquid injection box (41), the liquid injection box (41) is connected with the liquid storage unit (3) through a liquid injection pipeline (700), and the liquid injection box (41) is used for storing liquid for testing;
a liquid injection pump (42), wherein the liquid injection pump (42) is arranged on the liquid injection pipeline (700);
and the liquid injection valve (43) is arranged on the liquid injection pipeline (700) and used for controlling the on-off of the liquid injection pipeline (700).
10. The electromagnetic valve performance test apparatus according to claim 9, wherein the liquid injection unit (4) further includes:
and the liquid level detection unit is used for detecting the liquid level in the liquid storage unit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321797206.2U CN220230929U (en) | 2023-07-10 | 2023-07-10 | Electromagnetic valve performance testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321797206.2U CN220230929U (en) | 2023-07-10 | 2023-07-10 | Electromagnetic valve performance testing device |
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| CN220230929U true CN220230929U (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321797206.2U Active CN220230929U (en) | 2023-07-10 | 2023-07-10 | Electromagnetic valve performance testing device |
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| Country | Link |
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| CN (1) | CN220230929U (en) |
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2023
- 2023-07-10 CN CN202321797206.2U patent/CN220230929U/en active Active
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