Pressure safety valve performance testing device

Abstract

The utility model relates to the technical field of testing equipment, in particular to a pressure safety valve performance testing device. The device comprises a fluid collection box, a clamping assembly, a test fluid supply unit and a cleaning fluid supply unit, the pressure safety valve is fixed through the clamping assembly, the stability in the testing process is ensured, and the testing fluid supply unit supplies testing fluid simulating pressure oil to an oil inlet of the pressure safety valve so as to test the rated pressure and durability of the pressure safety valve; in the testing process, testing fluid flows out through an oil outlet of the pressure safety valve and is collected by a collecting groove in the top side of the fluid collecting box; after the test is completed, the cleaning fluid supply unit starts to supply cleaning fluid to the oil inlet of the pressure safety valve to remove the test fluid remaining in the pressure safety valve, and the cleaning fluid flows out of the oil outlet and is collected by the collecting tank; the problem of test fluid pollution in the prior art is effectively solved, and the test efficiency and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to a pressure safety valve performance testing device. Background Art

[0002] The pressure safety valve is a part of the automobile power steering gear. The pressure safety valve controls the pressure of the automobile power steering gear. For example, Patent No. CN201420235595.4 discloses a safety valve assembly for a power steering gear assembly. When the pressure in the oil inlet exceeds the rated pressure, the pressure oil enters the valve body from the oil inlet hole, the compression spring contracts, and drives the elastic guide sleeve and the steel ball to move forward. The pressure oil flows out from the oil outlet hole on the valve to unload. After the unloading is completed, the compression spring stretches and resets, and drives the elastic guide sleeve and the steel ball to move backward and reset. When the pressure safety valve is performing a performance test, a test fluid simulating the pressure oil needs to pass through the pressure safety valve to test the rated pressure and durability of the pressure safety valve. The test fluid simulating the pressure oil generally uses an oily fluid, which is easy to contaminate the pressure safety valve and the pressure safety valve performance test device after the test. The pressure safety valve performance test device in the prior art lacks the function of cleaning and collecting the test fluid.

[0003] Based on this, the applicant considered designing a pressure safety valve performance testing device capable of collecting the test fluid in a clean manner. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a pressure safety valve performance testing device capable of collecting the test fluid in a clean manner.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A pressure safety valve performance testing device, comprising a fluid collection box, a clamping assembly, a test fluid supply unit and a clean fluid supply unit;

[0007] The clamping assembly is used to clamp the pressure safety valve, the test fluid supply unit and the cleaning fluid supply unit respectively supply test fluid and cleaning fluid to the oil inlet of the pressure safety valve, and the fluid flows out from the oil outlet of the pressure safety valve. A collecting groove is provided on the top side of the fluid collecting box, and the collecting groove is used to collect the test fluid or cleaning fluid flowing out of the oil outlet.

[0008] The working principle and advantages of the pressure safety valve performance test device of this technical solution are:

[0009] The pressure safety valve is fixed by a clamping assembly to ensure stability during the test. The test fluid supply unit supplies a test fluid simulating pressure oil to the oil inlet of the pressure safety valve to test the rated pressure and durability of the pressure safety valve. During the test, the test fluid flows out through the oil outlet of the pressure safety valve and is collected by the collection tank on the top side of the fluid collection box. When the test is completed, the cleaning fluid supply unit starts to supply cleaning fluid to the oil inlet of the pressure safety valve to remove the test fluid remaining in the pressure safety valve. The cleaning fluid also flows out through the oil outlet and is collected by the collection tank. By setting up the cleaning fluid supply unit, the device can clean the pressure safety valve after the test is completed, effectively remove the residual test fluid, and prevent it from contaminating the pressure safety valve and the test device. The collection tank of the fluid collection box can centrally collect the test fluid and the cleaning fluid, which is convenient for subsequent processing and recycling, and improves the cleanliness of the test environment. While efficiently completing the performance test of the pressure safety valve, the cleanliness and environmental protection of the test process are ensured; the problem of test fluid contamination in the prior art is effectively solved, and the test efficiency and accuracy are improved.

[0010] Furthermore, the clamping assembly includes a first clamping block, a second clamping block and a driving member that drives the first clamping block and the second clamping block to move away from or closer to each other, and when the first clamping block and the second clamping block are close to each other, they clamp the two ends of the pressure safety valve, and the first clamping block is provided with a connecting nozzle corresponding to the oil inlet of the pressure safety valve, and the connecting nozzle is connected to the test fluid supply unit and the cleaning fluid supply.

[0011] Furthermore, an elastic layer is tightly attached to the side surfaces of the first clamping block and the second clamping block that are in contact with the pressure safety valve.

[0012] Furthermore, the driving member includes two telescopic members embedded in the fluid collection box, and telescopic ends of the two telescopic members are fixedly connected to the first clamping block and the second clamping block respectively.

[0013] Furthermore, it also includes a control valve, which is connected to the connecting nozzle, the test fluid supply unit and the cleaning fluid supply unit; the control valve is used to open or close the connection between the test fluid supply unit and the connecting nozzle, and to open or close the connection between the cleaning fluid supply unit and the connecting nozzle.

[0014] Furthermore, a pressure sensor for testing fluid pressure is provided between the connecting nozzle and the control valve.

[0015] Furthermore, the pressure sensor is fixedly connected to the first clamping block, and the control valve is fixedly connected to the pressure sensor.

[0016] Furthermore, the test fluid supply unit includes a test fluid box and a first pump body, and the clean fluid supply unit includes a clean fluid box and a second pump body.

[0017] Furthermore, the fluid collection box is provided with a discharge port connecting the inner bottom side and the outer side of the collection tank.

[0018] Furthermore, an inclined surface is provided on the inner bottom side of the collecting tank, and a movable box is provided below the discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a pressure safety valve performance testing device according to an embodiment of the utility model;

[0020] Figure 2 The three-dimensional structure diagram of the pressure safety valve performance test device of the utility model embodiment Figure 1 ;

[0021] Figure 3 The three-dimensional structure diagram of the pressure safety valve performance test device of the utility model embodiment Figure 2 ;

[0022] Figure 4 It is a schematic diagram of the front view structure of the pressure safety valve performance testing device according to an embodiment of the utility model;

[0023] Figure 5 It is a schematic cross-sectional structure diagram of a pressure safety valve performance testing device according to an embodiment of the utility model;

[0024] In the above drawings: 100, fluid collection box; 110, collection tank; 111, inclined surface; 120, discharge port; 130, guide groove;

[0025] 200, activity box;

[0026] 310, telescopic member; 320, connecting plate; 330, first clamping block; 340, second clamping block; 343, guide block; 350, elastic pad; 360, connecting nozzle; 361, elastic ring;

[0027] 400. Pressure sensor;

[0028] 500, control valve; 510, first connecting pipeline; 520, second connecting pipeline;

[0029] 610, test fluid box; 620, first pump body;

[0030] 710. Cleaning fluid box; 720. Second pump body. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] Refer to Figure 1 to Figure 5 , this embodiment provides a pressure safety valve performance test device, which includes a fluid collection box 100, a clamping assembly, a test fluid supply unit and a cleaning fluid supply unit;

[0033] The clamping assembly is used to clamp the pressure safety valve. The test fluid supply unit and the cleaning fluid supply unit supply test fluid and cleaning fluid to the oil inlet of the pressure safety valve respectively, and the fluid flows out from the oil outlet of the pressure safety valve. A collecting groove 110 is opened on the top side of the fluid collection box 100, and the collecting groove 110 is used to collect the test fluid or cleaning fluid flowing out of the oil outlet.

[0034] In this embodiment, the pressure safety valve is fixed by a clamping assembly to ensure stability during the test process, and the test fluid supply unit supplies a test fluid simulating pressure oil to the oil inlet of the pressure safety valve to test the rated pressure and durability of the pressure safety valve; during the test, the test fluid flows out through the oil outlet of the pressure safety valve and is collected by the collection tank 110 on the top side of the fluid collection box 100; when the test is completed, the cleaning fluid supply unit starts to supply cleaning fluid to the oil inlet of the pressure safety valve to remove the test fluid remaining in the pressure safety valve, and the cleaning fluid also flows out through the oil outlet and is collected by the collection tank 110; by setting up the cleaning fluid supply unit, the device can clean the pressure safety valve after the test is completed, effectively remove the residual test fluid, and prevent it from contaminating the pressure safety valve and the test device; the collection tank 110 of the fluid collection box 100 can centrally collect the test fluid and the cleaning fluid, which is convenient for subsequent processing and recycling, and improves the cleanliness of the test environment; while efficiently completing the performance test of the pressure safety valve, it ensures the cleanliness and environmental protection of the test process; effectively solves the problem of test fluid contamination in the prior art, and improves the test efficiency and accuracy.

[0035] Preferably, if Figure 1 to Figure 5As shown, the clamping assembly includes a first clamping block 330, a second clamping block 340 and a driving member driving the first clamping block 330 and the second clamping block 340 to move away from or approach each other. When the first clamping block 330 and the second clamping block 340 are approached, the two ends of the pressure safety valve are clamped. The first clamping block 330 is provided with a connecting nozzle 360 ​​corresponding to the oil inlet of the pressure safety valve, and the connecting nozzle 360 ​​is connected to the test fluid supply unit and the cleaning fluid supply; when the driving member drives the first clamping block 330 and the second clamping block 340 to approach each other, the two ends of the pressure safety valve are stably clamped to ensure the stable setting of the pressure safety valve during the test process. When the clamping assembly clamps the pressure safety valve, the connecting nozzle 360 ​​on the first clamping block 330 extends into the pressure safety valve, allowing the test fluid supply unit and the cleaning fluid supply to supply the test fluid and the cleaning fluid through the connecting nozzle 360.

[0036] Preferably, if Figure 1 to Figure 5 As shown, the first clamping block 330 and the second clamping block 340 are tightly attached to the side contacting the pressure safety valve with an elastic layer; the stability of the clamping assembly in clamping the pressure safety valve is improved, while avoiding damage to the pressure safety valve; specifically, the first clamping block 330 and the second clamping block 340 are respectively provided with receiving grooves for accommodating the two ends of the pressure safety valve, so as to facilitate the pressure safety valve to be placed on the first clamping block 330 and the second clamping block 340; more specifically, the elastic layer includes an elastic pad 350 tightly attached to the side wall of the receiving groove and an elastic ring 361 tightly attached to the outer wall of the connecting nozzle 360.

[0037] Preferably, if Figure 1 to Figure 5 As shown, the driving member includes two telescopic members 310 embedded in the fluid collection box 100, and the telescopic ends of the two telescopic members 310 are fixedly connected to the first clamping block 330 and the second clamping block 340 respectively; the first clamping block 330 and the second clamping block 340 are controlled to approach or move away through the telescopic action of the two telescopic members 310. Specifically, the telescopic end of the telescopic member 310 is fixedly connected to the first clamping block 330 and the second connecting block through the connecting plate 320, and the above-mentioned telescopic member 310 can directly adopt the electric telescopic rod or other telescopic equipment in the prior art; more specifically, a guide groove 130 is opened on the fluid collection box 100, and the first clamping block 330 and the second clamping block 340 are fixedly connected with a guide block 343 slidably connected in the guide groove 130, so that the movement of the first clamping block 330 and the second clamping block 340 is more stable.

[0038] Preferably, if Figure 1 to Figure 5As shown, the pressure safety valve performance test device also includes a control valve 500, which is connected to the connecting nozzle 360, the test fluid supply unit and the cleaning fluid supply unit; the control valve 500 is used to open or close the connection between the test fluid supply unit and the connecting nozzle 360, and to open or close the connection between the cleaning fluid supply unit and the connecting nozzle 360; so as to realize the supply control of the test fluid and the cleaning fluid. Specifically, the above-mentioned control valve 500 can adopt a two-position three-way solenoid valve in the prior art or other valves that can realize the above-mentioned functions.

[0039] Preferably, if Figure 1 to Figure 5 As shown, a pressure sensor 400 for testing fluid pressure is provided between the connecting nozzle 360 ​​and the control valve 500, which is used for real-time monitoring of the pressure of the testing fluid to ensure the accuracy of the test. The pressure sensor 400 may be a tubular pressure sensor 400 in the prior art.

[0040] Preferably, if Figure 1 to Figure 5 As shown, the pressure sensor 400 is fixedly connected to the first clamping block 330, and the control valve 500 is fixedly connected to the pressure sensor 400; the connection between the various components is made more compact and reasonable, and the integrity of the pressure safety valve performance testing device is improved.

[0041] Preferably, if Figure 1 to Figure 5 As shown, the test fluid supply unit includes a test fluid box 610 and a first pump body 620, and the cleaning fluid supply unit includes a cleaning fluid box 710 and a second pump body 720; the test fluid box 610 is used to store the test fluid, the first pump body 620 is used to transport the test fluid, the cleaning fluid box 710 is used to store the cleaning fluid, and the second pump body 720 is used to transport the cleaning fluid; the first pump body 620 and the second pump body 720 can adopt the booster pumps in the prior art, and the above-mentioned control valve 500 is connected to the first pump body 620 and the second pump body 720 respectively through the first connecting pipeline 510 and the second connecting pipeline 520.

[0042] Preferably, if Figure 1 to Figure 5 As shown, the fluid collection box 100 is provided with a discharge port 120 communicating the inner bottom side and the outer side of the collection tank 110 ; the collection tank 110 discharges the collected test fluid or cleaning fluid through the discharge port 120 on the fluid collection box 100 .

[0043] Preferably, if Figure 1 to Figure 5As shown, a slope 111 is provided on the inner bottom side of the collecting tank 110, and a movable box 200 is provided below the discharge port 120; the slope 111 on the inner bottom side of the collecting tank 110 can quickly discharge the test fluid or cleaning fluid in the collecting tank 110 from the discharge port 120 into the movable box 200, and the movable box 200 is convenient for the staff to transport the collected test fluid or cleaning fluid; specifically, a notch is provided at the bottom of the fluid collection box 100 for the movable box 200 to extend into, which is conducive to the fluid flowing into the movable box 200.

[0044] Specifically, the rated pressure and durability of the pressure safety valve in this embodiment can be tested by referring to the testing method in the prior art, which is mainly achieved by the following steps:

[0045] First, the pressure safety valve is stably clamped by the clamping assembly;

[0046] Next, a test fluid simulating pressure oil is supplied to the oil inlet of the pressure safety valve through the test fluid supply unit. During the process of the test fluid passing through the pressure safety valve, the pressure of the test fluid can be monitored in real time through the above-mentioned pressure sensor 400 or other means, and the pressure change of the fluid can be measured and recorded in real time, so as to judge whether the rated pressure of the pressure safety valve meets the requirements; when testing the durability of the pressure safety valve, the test fluid can be continuously or intermittently supplied to the pressure safety valve at a certain flow rate and flow rate to simulate its use in actual work. In this process, the data of the pressure sensor 400 is continuously monitored and recorded, and the performance change of the pressure safety valve is observed to evaluate its durability;

[0047] After the test is completed, clean fluid is supplied to the oil inlet of the pressure safety valve through the clean fluid supply unit to remove the test fluid remaining in the pressure safety valve.

[0048] In summary, through the coordinated work of the various components in the above scheme, the rated pressure and durability of the pressure safety valve can be effectively tested.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Pressure safety valve performance testing device, characterized in that: It includes a fluid collection box, a clamping assembly, a test fluid supply unit, and a cleaning fluid supply unit; The clamping assembly is used to clamp the pressure safety valve, the test fluid supply unit and the cleaning fluid supply unit respectively supply test fluid and cleaning fluid to the oil inlet of the pressure safety valve, and the fluid flows out from the oil outlet of the pressure safety valve. A collecting groove is provided on the top side of the fluid collecting box, and the collecting groove is used to collect the test fluid or cleaning fluid flowing out of the oil outlet.

2. The pressure safety valve performance testing device according to claim 1, characterized in that: The clamping assembly includes a first clamping block, a second clamping block and a driving member that drives the first clamping block and the second clamping block to move away from or closer to each other. When the first clamping block and the second clamping block are close to each other, they clamp the two ends of the pressure safety valve. The first clamping block is provided with a connecting nozzle corresponding to the oil inlet of the pressure safety valve, and the connecting nozzle is connected to the test fluid supply unit and the cleaning fluid supply.

3. The pressure safety valve performance testing device according to claim 2, characterized in that: The first clamping block and the second clamping block are in close contact with the pressure safety valve on their sides with an elastic layer.

4. The pressure safety valve performance testing device according to claim 2, characterized in that: The driving member includes two telescopic members embedded in the fluid collection box, and the telescopic ends of the two telescopic members are fixedly connected to the first clamping block and the second clamping block respectively.

5. The pressure safety valve performance testing device according to claim 2, characterized in that: It also includes a control valve, which is connected to the connecting nozzle, the test fluid supply unit and the cleaning fluid supply unit; the control valve is used to open or close the connection between the test fluid supply unit and the connecting nozzle, and to open or close the connection between the cleaning fluid supply unit and the connecting nozzle.

6. The pressure safety valve performance testing device according to claim 5, characterized in that: A pressure sensor for testing fluid pressure is arranged between the connecting nozzle and the control valve.

7. The pressure safety valve performance testing device according to claim 6, characterized in that: The pressure sensor is fixedly connected to the first clamping block, and the control valve is fixedly connected to the pressure sensor.

8. The pressure safety valve performance testing device according to claim 1, characterized in that: The test fluid supply unit includes a test fluid box and a first pump body, and the clean fluid supply unit includes a clean fluid box and a second pump body.

9. The pressure safety valve performance testing device according to claim 1, characterized in that: The fluid collection box is provided with a discharge port communicating with the inner bottom side and the outer side of the collection tank.

10. The pressure safety valve performance testing device according to claim 9, characterized in that: An inclined surface is arranged on the inner bottom side of the collecting tank, and a movable box is arranged below the discharge port.

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