Airtightness test equipment

Abstract

The utility model discloses air tightness test equipment, and relates to the technical field of test. The device comprises a rack, and a positive pressure proportional valve, a negative pressure proportional valve, a gas source, a product gas pipe plug-in assembly, a product power plug, a 24V power supply, an industrial personal computer, a 10L gas storage tank, a 3L gas storage tank, an electromagnetic valve group, a booster pump, a vacuum pump, a first sensor and a second sensor are fixedly installed in the rack. The electromagnetic valve group comprises a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve, the air exhaust end of the vacuum pump, the display and the product to be tested are connected with the pipeline through the product air pipe plug-in assembly, the effect of conveniently carrying out forward, reverse, positive pressure and negative pressure classification tests on the valve product in use is achieved, the test structure is more comprehensive and accurate, and the test efficiency is improved. The quality and reliability of the valve can be evaluated more comprehensively, multiple tests can be completed through one device, and operation is simpler and more convenient.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, specifically to an airtightness testing device. Background Technology

[0002] Valves are crucial safety control devices in vital pipelines, and their airtightness directly affects the safety, stability, and efficiency of the transportation process. Insufficient valve airtightness can lead to leaks, wasted resources, and even endanger personnel safety. Therefore, effective leak detection and airtightness testing of valves are essential.

[0003] Currently, there are some devices on the market for testing the airtightness of valves, but most of them can only test in a single direction (e.g., forward), and are often limited to positive pressure testing, failing to comprehensively test the airtightness performance of valves under different pressures and directions. This single testing method cannot truly reflect the actual working state of the valve, resulting in inaccurate test results and an inability to comprehensively assess the quality and reliability of the valve.

[0004] Therefore, an airtightness testing device is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide an airtightness testing device in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] An airtightness testing device includes a frame. Inside the frame, a positive pressure proportional valve, a negative pressure proportional valve, an air source, a product air pipe connector assembly, a product power plug, a 24V power supply, an industrial control computer, a 10L air tank, a 3L air tank, a solenoid valve assembly, a booster pump, a vacuum pump, a first sensor, and a second sensor are fixedly installed. The solenoid valve assembly includes a first solenoid valve, a second solenoid valve, and a third solenoid valve. The vacuum pump's suction end, a display, and the product under test are connected via the product air pipe connector assembly and piping. The output ends of the air source and the booster pump are connected to the product via the product air pipe connector assembly and piping. A first sensor is installed on the piping between the product under test and the industrial control computer. A second sensor and a 3L air tank are installed on the piping between the other end of the product under test and the industrial control computer. A third solenoid valve is installed on the piping between the 3L air tank and the product under test. A positive pressure proportional valve and a second solenoid valve are installed on the piping between the booster pump and the product under test. A negative pressure proportional valve and a first solenoid valve are installed on the piping between the display and the product under test.

[0008] Furthermore, cooling fans are provided on both the left and right sides of the frame.

[0009] Furthermore, a three-color light is fixedly installed on the top of the frame.

[0010] Furthermore, the adjustment range of the positive pressure proportional valve is 0-0.9 MPa.

[0011] Furthermore, the adjustment range of the negative pressure proportional valve is -95 kPa to 0.

[0012] Furthermore, a power switch and a display are fixedly mounted on the surface of the rack.

[0013] The beneficial effects of this utility model are as follows:

[0014] The product is connected to the equipment via a product air tube connector. The industrial control computer controls the equipment to run and test. Based on the product's airtightness testing requirements, positive or negative pressure can be selected to test the product's airtightness. Negative pressure airtightness can be tested via a branch consisting of a vacuum pump, display, negative pressure proportional valve, and first solenoid valve; positive pressure airtightness can be tested via a branch consisting of an air source, booster pump, positive pressure proportional valve, and second solenoid valve; the airtightness of the product's air inlet can be tested via a first sensor; and the airtightness of the product's air outlet can be tested via a second sensor. The sensor pressure values ​​are fed back to the industrial control computer for testing personnel to view. In use, this system facilitates the classification and testing of valve products for positive, reverse, positive, and negative pressure, resulting in more comprehensive and accurate test results. This allows for a more complete evaluation of the valve's quality and reliability. Furthermore, a single device can complete multiple tests, making operation more convenient. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a sectional view of the back of this utility model;

[0017] Figure 3 This is a rear view of the structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the gas path principle of this utility model;

[0019] Reference numerals: 1. Frame; 2. Cooling fan; 3. Positive pressure proportional valve; 4. Negative pressure proportional valve; 5. Air source; 6. Power switch; 7. Product air pipe connector assembly; 8. Product power plug; 9. 24V power supply; 10. Display; 11. Industrial computer; 12. 10L air tank; 13. 3L air tank; 14. Solenoid valve assembly; 141. First solenoid valve; 142. Second solenoid valve; 143. Third solenoid valve; 15. Booster pump; 16. Vacuum pump; 17. First sensor; 18. Second sensor; 19. Tri-color light. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. 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.

[0024] like Figures 1 to 4As shown, an airtightness testing device includes a frame 1. Inside the frame 1 are fixedly installed a positive pressure proportional valve 3, a negative pressure proportional valve 4, an air source 5, a product air pipe connector 7, a product power plug 8, a 24V power supply 9, an industrial computer 11, a 10L air tank 12, a 3L air tank 13, a solenoid valve assembly 14, a booster pump 15, a vacuum pump 16, a first sensor 17, and a second sensor 18. The solenoid valve assembly 14 includes a first solenoid valve 141, a second solenoid valve 142, and a third solenoid valve 143. The vacuum pump 16's suction end, a display 10, and the product under test are connected via the product air pipe connector 7 and piping. The output end of the air source 5, the output end of the booster pump 15, and the product are connected to the product air pipe connector 7 and the pipeline. A first sensor 17 is installed on the pipeline between the product under test and the industrial control computer 11. A second sensor 18 and a 3L air tank 13 are installed on the pipeline between the other end of the product under test and the industrial control computer 11. A third solenoid valve 143 is installed on the pipeline between the 3L air tank 13 and the product under test. A positive pressure proportional valve 3 and a second solenoid valve 142 are installed on the pipeline between the booster pump 15 and the product under test. A negative pressure proportional valve 4 and a first solenoid valve 141 are installed on the pipeline between the display 10 and the product under test. More specifically, the product is connected to the equipment via the product air pipe connector 7, and the equipment operation and testing are controlled by the industrial control computer 11. Positive or negative pressure is selected to test the product's airtightness according to the product's airtightness requirements. Negative pressure airtightness can be tested via the branch consisting of vacuum pump 16, display 10, negative pressure proportional valve 4, and first solenoid valve 141; positive pressure airtightness can be tested via the branch consisting of air source 5, booster pump 15, positive pressure proportional valve 3, and second solenoid valve 142; airtightness of the product's air inlet can be tested via the first sensor 17; and airtightness of the product's air outlet can be tested via the second sensor 18. The sensor pressure values ​​are fed back to the industrial control computer 11 for testing personnel to view. In use, this system facilitates the classification and testing of valve products for positive, reverse, positive, and negative pressure, resulting in more comprehensive and accurate test results. This allows for a more comprehensive evaluation of the valve's quality and reliability, and multiple tests can be completed with a single device, making operation more convenient.

[0025] Cooling fans 2 are installed on both the left and right sides of rack 1. It should be noted that the cooling fans 2 are installed to dissipate heat from the inside of rack 1 and prevent the internal operating temperature of rack 1 from becoming too high.

[0026] A tri-color light 19 is fixedly installed on the top of the frame 1. More specifically, by setting the tri-color light 19, a flashing alarm can be triggered when poor airtightness of the product is detected, alerting the test personnel.

[0027] The adjustment range of the positive pressure proportional valve 3 is 0-0.9 MPa.

[0028] The adjustment range of the negative pressure proportional valve 4 is -95 kPa to 0.

[0029] A power switch 6 and a display 10 are fixedly mounted on the surface of the rack 1. It should be noted that the power switch 6 can control the power supply of the equipment, and the display 10 can display the test data in real time.

[0030] In summary: The product is connected to the equipment via the product air pipe connector 7. The industrial control computer 11 controls the equipment operation and testing. Positive or negative pressure is selected to test the product's airtightness according to the airtightness test requirements. The negative pressure airtightness of the product can be tested via the branch consisting of vacuum pump 16, display 10, negative pressure proportional valve 4, and first solenoid valve 141. The positive pressure airtightness of the product can be tested via the branch consisting of air source 5, booster pump 15, positive pressure proportional valve 3, and second solenoid valve 142. The airtightness of the product's air inlet can be tested via the first sensor 17, and the airtightness of the product's air outlet can be tested via the second sensor 18. The sensor pressure values ​​are fed back to the industrial control computer 11 for testing personnel to view. In use, this system facilitates the classification and testing of valve products for positive, reverse, positive, and negative pressure, resulting in more comprehensive and accurate test results. This allows for a more comprehensive evaluation of the valve's quality and reliability. Furthermore, one device can complete multiple tests, making operation more convenient.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An airtightness testing device, characterized in that, The system includes a frame (1), which internally houses a positive pressure proportional valve (3), a negative pressure proportional valve (4), an air source (5), a product air pipe connector assembly (7), a product power plug (8), a 24-volt power supply (9), an industrial computer (11), a 10L air tank (12), a 3L air tank (13), a solenoid valve assembly (14), a booster pump (15), a vacuum pump (16), a first sensor (17), and a second sensor (18). The solenoid valve assembly (14) includes a first solenoid valve (141), a second solenoid valve (142), and a third solenoid valve (143). The vacuum pump (16) is connected to the pumping end, the display (10), and the product under test via the product air pipe connector assembly (7) and pipelines. The output end of the gas source (5), the output end of the booster pump (15) and the product are connected by the product air pipe insertion assembly (7) and the pipeline. A first sensor (17) is installed on the pipeline between the product under test and the industrial control computer (11). A second sensor (18) and a 3L air tank (13) are installed on the pipeline between the other end of the product under test and the industrial control computer (11). A third solenoid valve (143) is installed on the pipeline between the 3L air tank (13) and the product under test. A positive pressure proportional valve (3) and a second solenoid valve (142) are installed on the pipeline between the booster pump (15) and the product under test. A negative pressure proportional valve (4) and a first solenoid valve (141) are installed on the pipeline between the display (10) and the product under test.

2. The airtightness testing device according to claim 1, characterized in that, Cooling fans (2) are provided on both the left and right sides of the frame (1).

3. The airtightness testing device according to claim 1, characterized in that, A tri-color light (19) is fixedly installed on the top of the frame (1).

4. The airtightness testing device according to claim 1, characterized in that, The adjustment range of the positive pressure proportional valve (3) is 0-0.9 MPa.

5. The airtightness testing device according to claim 1, characterized in that, The adjustment range of the negative pressure proportional valve (4) is -95Kpa to 0.

6. The airtightness testing device according to claim 1, characterized in that, A power switch (6) and a display (10) are fixedly mounted on the surface of the rack (1).

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