A high-pressure airtightness testing device

Abstract

This utility model discloses a high-pressure airtightness testing device, belonging to the technical field of automotive solenoid valve airtightness testing. The high-pressure airtightness testing device includes a frame, a testing instrument assembly, and a leakage test terrace. The leakage test terrace is mounted on the frame, and the testing instrument assembly is used to test the leakage test terrace. The leakage test terrace includes a C-shaped frame with an upper and lower fixture slidably connected. The upper and lower fixtures are used to place the product to be tested. The upper fixture has a standard cavity for simulating a standard and a test cavity for testing the product. The testing instrument assembly includes a leak detector, which has a standard test line for communicating with the standard cavity and a product test line for communicating with the test cavity. This utility model, through the upper and lower fixtures and the leak detector, reduces manual labor, improves testing efficiency, and provides more accurate airtightness results.

Description

Technical Field

[0001] This utility model relates to the field of automotive solenoid valve air tightness testing technology, and in particular to a high-pressure air tightness testing device. Background Technology

[0002] A solenoid valve is an electromagnetically controlled industrial component, a fundamental element of automation used to control fluids. It belongs to the actuator category and is not limited to hydraulic or pneumatic systems. It is often used in industrial control systems to adjust the direction, flow rate, speed, and other parameters of the medium. There are many types of solenoid valves, and different solenoid valves can be used with different circuits to play different roles in the control system, achieving the desired control while ensuring accuracy and flexibility.

[0003] Currently, solenoid valves are widely used in hydraulic and pneumatic control systems, and the quality of their assembly technology often directly affects their performance.

[0004] In the application of solenoid valves, the high-pressure airtightness of the solenoid valve is to ensure that the leakage at the weld is within the allowable range under extreme high-pressure conditions. The quality of the high-pressure airtightness of the solenoid valve directly affects whether the solenoid valve can cope with extreme conditions during normal operation, ensuring the normal operation of the solenoid valve, and determining the reliability and durability of the solenoid valve.

[0005] Existing testing methods mostly involve applying soap foam to an electromagnetic field to test air tightness, which is inefficient and prone to errors. Therefore, a high-pressure air tightness testing device is proposed. Utility Model Content

[0006] The purpose of this invention is to solve the above-mentioned problems by proposing a high-pressure airtightness testing device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A high-pressure airtightness testing device includes a frame, a testing instrument assembly, and a leakage test terrace. The leakage test terrace is mounted on the frame, and the testing instrument assembly is used to test the leakage test terrace. The leakage test terrace includes a C-frame with an upper and lower fixture slidably connected. The upper and lower fixtures are used to place the product to be tested. The upper fixture has a standard cavity for simulating a standard and a test cavity for testing the product. The testing instrument assembly includes a leak detector with a standard test line communicating with the standard cavity and a product test line communicating with the test cavity.

[0009] Preferably, the upper tooling includes an upper tooling test block, a plug is installed on the standard cavity of the upper tooling test block, the standard cavity is filled with a standard cavity filling block for controlling the volume of the standard cavity, and a test cavity filling block for controlling the volume of the test cavity is detachably connected to the test cavity of the upper tooling test block.

[0010] The upper tooling test block is fixedly connected to a rigid pipe clamping sleeve on its side. The rigid pipe clamping sleeve is equipped with a product test air inlet block that communicates with the test chamber and a standard chamber test air inlet block that communicates with the standard chamber. The standard test pipeline is connected to the standard chamber test air inlet block, and the product test pipeline is connected to the product test air inlet block.

[0011] Preferably, the test chamber filling block is mounted on the upper tooling test block by filling block mounting bolts, and O-rings are provided between the test chamber filling block, the filling block mounting bolts, and the upper tooling test block.

[0012] Preferably, a linear guide rail is mounted on the C-shaped frame, and a guide rail rod plate is slidably connected to the linear guide rail. An upper tooling mounting block is mounted on the upper tooling test block, and the upper tooling mounting block is connected to the guide rail rod plate by bolts. A servo motor, a reducer, and an electric cylinder are fixedly connected to the C-shaped frame in sequence. A floating joint is installed at the telescopic end of the electric cylinder. A floating base is mounted on the upper tooling mounting block, and the floating joint is connected to the floating base.

[0013] Preferably, the lower tooling includes a lower tooling base, which is mounted on a C-frame via a lower tooling shim. A metal collar is slidably connected to the lower tooling shim, and a lower tooling product positioning block is connected to the metal collar. The lower tooling product positioning block is slidably connected within the lower tooling base. A flat key is provided on the side of the lower tooling product positioning block, and the lower end of the lower tooling product positioning block is in contact with the lower tooling shim via a butterfly spring and a metal washer in sequence.

[0014] Preferably, the C-shaped frame is equipped with a photoelectric sensor, and the detection direction of the photoelectric sensor is located at the sliding contact point of the upper and lower tooling.

[0015] Preferably, the lower end of the frame component is provided with a frame frame and adjustable frame legs.

[0016] Preferably, the tester assembly includes a leak detection frame for supporting the leak detector, and the lower end of the leak detection frame is equipped with adjustable support legs.

[0017] The leak detector is equipped with a high-pressure air inlet pipe.

[0018] Compared with the prior art, this utility model provides a high-pressure airtightness testing device, which has the following beneficial effects:

[0019] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model reduces manual labor, improves detection efficiency, and provides more accurate results for airtightness detection by setting up upper and lower tooling and a leak detector. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a high-pressure airtightness testing device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of a leakage test terrace for a high-pressure airtightness testing device proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the C-frame structure of a high-pressure airtightness testing device proposed in this utility model;

[0023] Figure 4 This is a cross-sectional structural diagram of a high-pressure airtightness testing device proposed in this utility model;

[0024] Figure 5 This utility model proposes a high-pressure airtightness testing device. Figure 4 A schematic diagram of the structure of part A;

[0025] Figure 6 This utility model proposes a high-pressure airtightness testing device. Figure 4 A schematic diagram of the structure of part B.

[0026] In the diagram: 1. Frame component; 101. Frame support; 102. Frame frame; 2. Tester assembly; 2001. Leak detector; 2002. Leak detector frame; 201. High-pressure air inlet pipe; 202. Standard test pipeline; 203. Product test pipeline; 3. C-frame; 301. Servo motor; 302. Reducer; 303. Electric cylinder; 304. Floating joint; 305. Floating base; 306. Guide rail rod plate; 307. Linear guide rail; 308. Photoelectric sensor; 4. Upper fixture Test block; 401, Upper tooling mounting block; 402, Rigid pipe clamping sleeve; 403, Standard cavity test air inlet block; 404, Product test air inlet block; 405, Plug; 406, Standard cavity filling block; 407, Test cavity filling block; 4071, Filling block mounting bolt; 4072, O-ring; 5, Lower tooling base; 5001, Lower tooling shim block; 501, Lower tooling product positioning block; 502, Disc spring; 503, Flat key; 504, Metal collar; 505, Metal washer. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Example:

[0030] Reference Figure 1-6 A high-pressure airtightness testing device includes a frame 1, a tester assembly 2, and a leak test terrace. The leak test terrace is mounted on the frame 1. The tester assembly 2 is used to test the leak test terrace. The lower end of the frame 1 is provided with a frame 102 and adjustable frame legs 101. The tester assembly 2 includes a leak test frame 2002 for supporting a leak detector 2001. The lower end of the leak test frame 2002 is equipped with adjustable legs. The leak detector 2001 is provided with a high-pressure air inlet pipe 201.

[0031] The leakage test terrace includes a C-shaped frame 3, on which an upper fixture and a lower fixture are slidably connected. The upper fixture and the lower fixture are used to place the product to be tested. The upper fixture is provided with a standard cavity for simulating a standard and a test cavity for testing the product.

[0032] The upper fixture includes an upper fixture test block 4. A plug 405 is installed on the standard cavity of the upper fixture test block 4. The standard cavity is filled with a standard cavity filling block 406 for controlling the volume of the standard cavity. A test cavity filling block 407 for controlling the volume of the test cavity is detachably connected to the test cavity of the upper fixture test block 4. Specifically, the test cavity filling block 407 is installed on the upper fixture test block 4 by a filling block mounting bolt 4071. O-rings 4072 are provided between the test cavity filling block 407, the filling block mounting bolt 4071, and the upper fixture test block 4. A rigid pipe clamping sleeve 402 is fixedly connected to the side of the upper fixture test block 4 to improve the sealing during testing. The rigid pipe clamping sleeve 402 is provided with a product test air inlet block 404 communicating with the test cavity and a standard cavity test air inlet block 403 communicating with the standard cavity. The standard test pipeline 202 is connected to the standard cavity test air inlet block 403, and the product test pipeline 203 is connected to the product test air inlet block 404.

[0033] It should be noted that the gas detected by the leak detector 2001 is the gas from the leak detector's own gas path, the product test line 203, and the test chamber. Therefore, in order to improve the accuracy of leak detection, the volume of the test chamber can be reduced by adding a test chamber filling block 407 inside the test chamber. This makes the change in detection pressure more obvious when a leak occurs, thus improving the accuracy of the detection results.

[0034] Similarly, the paths of the standard test line 202 and the product test line 203 can be reduced to improve the accuracy of the test results;

[0035] To reduce the influence of external temperature, insulation cotton can be wrapped around the standard test line 202 and the product test line 203 to improve the accuracy of the test results.

[0036] The lower tooling includes a lower tooling base 5, which is mounted on a C-frame 3 via a lower tooling elevation block 5001. A metal collar 504 is slidably connected to the lower tooling elevation block 5001, and a lower tooling product positioning block 501 is connected to the metal collar 504. The lower tooling product positioning block 501 is slidably connected inside the lower tooling base 5. A flat key 503 is provided on the side of the lower tooling product positioning block 501. The lower end of the lower tooling product positioning block 501 is in contact with the lower tooling elevation block 5001 via a butterfly spring 502 and a metal washer 505. The butterfly spring 502 and the metal washer 505 can buffer the solenoid valve when closing the upper and lower tooling, reducing damage to the solenoid valve.

[0037] The upper and lower fixtures are brought closer together by fixing the lower fixture and sliding the upper fixture. Specifically, a linear guide rail 307 is installed on the C-shaped frame 3, and a guide rail rod plate 306 is slidably connected to the linear guide rail 307. An upper fixture mounting block 401 is installed on the upper fixture test block 4, and the upper fixture mounting block 401 is connected to the guide rail rod plate 306 by bolts. A servo motor 301, a reducer 302 and an electric cylinder 303 are fixedly connected to the C-shaped frame 3 in sequence. A floating joint 304 is installed on the telescopic end of the electric cylinder 303. A floating base 305 is installed on the upper fixture mounting block 401, and the floating joint 304 is connected to the floating base 305.

[0038] The tester assembly 2 includes a leak detector 2001. The leak detector 2001 is equipped with a standard test line 202 for communicating with a standard cavity and a product test line 203 for communicating with a test cavity. The leak detector 2001 can simultaneously test the test cavity and the standard cavity through the standard test line 202 and the product test line 203, so that the test results of the two are comparable, thereby reducing the error caused by the change of gas pressure due to temperature and improving the accuracy of the test results.

[0039] The C-shaped frame 3 is equipped with a photoelectric sensor 308, and the detection direction of the photoelectric sensor 308 is located at the sliding contact point of the upper and lower tooling.

[0040] When using this device, the electric cylinder 303 and its components drive the upper tooling test block 4 to move on the linear guide rail 307.

[0041] When the solenoid valve is placed on the lower tooling product positioning block 501 by the conveying mechanism, the photoelectric sensor 308 detects the presence of material and transmits an electrical signal to the electric cylinder 303. The electric cylinder 303 then starts working, causing the upper tooling test block 4 to move down and press down on the lower tooling product positioning block 501 and the lower tooling base 5. It should be noted that a sealing ring is provided between the lower tooling base 5 and the upper tooling test block 4 to seal the cavity where the solenoid valve is located. At this time, the airtightness of the solenoid valve can be tested by the leak detector 2001. After the test is completed, the upper tooling test block 4 is moved up and the solenoid valve is removed. This completes the test.

[0042] This utility model, through the design of the upper tooling, lower tooling, and leak detector 2001, reduces manual labor, improves detection efficiency, and provides more accurate airtightness test results.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-pressure airtightness testing device, comprising a frame (1), characterized in that, It also includes a tester assembly (2) and a leakage test terrace, the leakage test terrace being mounted on a frame component (1), and the tester assembly (2) being used to detect the leakage test terrace; in, The leakage test terrace includes a C-shaped frame (3), on which an upper fixture and a lower fixture are provided in a relatively sliding connection. The upper fixture and the lower fixture are used to place the product to be tested. The upper fixture is provided with a standard cavity for simulating a standard and a test cavity for testing the product. The test instrument assembly (2) includes a leak detector (2001), which is provided with a standard test line (202) for communicating with a standard cavity and a product test line (203) for communicating with a test cavity.

2. The high-pressure airtightness testing device according to claim 1, characterized in that, The upper tooling includes an upper tooling test block (4), a plug (405) is installed on the standard cavity of the upper tooling test block (4), the standard cavity is filled with a standard cavity filling block (406) for controlling the volume of the standard cavity, and a test cavity filling block (407) for controlling the volume of the test cavity is detachably connected to the test cavity of the upper tooling test block (4). The upper tooling test block (4) is fixedly connected to a rigid pipe clamping sleeve (402) on its side. The rigid pipe clamping sleeve (402) is provided with a product test air inlet block (404) communicating with the test chamber and a standard chamber test air inlet block (403) communicating with the standard chamber. The standard test pipeline (202) is connected to the standard chamber test air inlet block (403), and the product test pipeline (203) is connected to the product test air inlet block (404).

3. The high-pressure airtightness testing device according to claim 2, characterized in that, The test chamber filling block (407) is installed on the upper tooling test block (4) by the filling block mounting bolt (4071). O-rings (4072) are provided between the test chamber filling block (407), the filling block mounting bolt (4071), and the upper tooling test block (4).

4. The high-pressure airtightness testing device according to claim 2, characterized in that, A linear guide rail (307) is installed on the C-shaped frame (3), and a guide rail rod plate (306) is slidably connected on the linear guide rail (307). An upper tooling mounting block (401) is installed on the upper tooling test block (4). The upper tooling mounting block (401) and the guide rail rod plate (306) are connected by bolts. A servo motor (301), a reducer (302) and an electric cylinder (303) are fixedly connected on the C-shaped frame (3) in sequence. A floating joint (304) is installed on the telescopic end of the electric cylinder (303). A floating base (305) is installed on the upper tooling mounting block (401). The floating joint (304) is connected to the floating base (305).

5. The high-pressure airtightness testing device according to claim 1, characterized in that, The lower tooling includes a lower tooling base (5), which is mounted on a C-frame (3) via a lower tooling shim (5001). A metal collar (504) is slidably connected to the lower tooling shim (5001), and a lower tooling product positioning block (501) is connected to the metal collar (504). The lower tooling product positioning block (501) is slidably connected inside the lower tooling base (5). A flat key (503) is provided on the side of the lower tooling product positioning block (501). The lower end of the lower tooling product positioning block (501) is in contact with the lower tooling shim (5001) via a butterfly spring (502) and a metal washer (505) in sequence.

6. The high-pressure airtightness testing device according to claim 1, characterized in that, The C-shaped frame (3) is equipped with a photoelectric sensor (308), and the detection direction of the photoelectric sensor (308) is located at the sliding contact point of the upper and lower tooling.

7. The high-pressure airtightness testing device according to claim 1, characterized in that, The lower end of the frame component (1) is provided with a frame frame (102) and adjustable frame legs (101).

8. The high-pressure airtightness testing device according to claim 1, characterized in that, The tester assembly (2) includes a leak detection frame (2002) for supporting the leak detector (2001), and the lower end of the leak detection frame (2002) is equipped with adjustable support legs. The leak detector (2001) is equipped with a high-pressure air inlet pipe (201).

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