A portable air tightness test equipment

Abstract

The utility model discloses a portable air tightness test device, including a test box, a first tank body, a second tank body, a connector and a first air pump, wherein the first tank body stores pure water, the second tank body stores test liquid, the test box is connected to the first tank body and the second tank body through a water pipe, the test box includes a box body and a sealing cover, the sealing cover is connected to the box body, the sealing cover is provided with an overflow pipe, the overflow pipe is provided with a first control valve, the first air pump is connected to the connector through a first air pipe, and the connector is used to connect to the air inlet of the device to be tested. The utility model provides a portable air tightness test device, which first uses pure water to discharge the gas in the test box during testing, so as to avoid contact between the test liquid and the air in the test box and improve the accuracy of the test.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection, in particular to a portable air tightness testing device. Background Art

[0002] With the rapid development of modern industrial technology, the air tightness test of equipment has become an indispensable part of product quality control and safety assessment. Air tightness testing is usually used to ensure that the equipment will not leak gas under specific pressure or vacuum conditions, thereby ensuring the safety and reliability of the equipment during operation. The prior art discloses the use of a test liquid that changes color when in contact with air or a reactor for air tightness testing. During the test, the device to be tested is placed in the test liquid, and high-pressure gas is injected into the container to be tested. When the device to be tested leaks, the test liquid changes from blue to pink after contact with the gas, thereby determining that the device to be tested has leaked. However, before the test is carried out, the air in the test box for placing the test liquid cannot be emptied, resulting in the liquid to be tested coming into contact with air when injected into the test box, which reduces the accuracy of the test. Utility Model Content

[0003] In response to the above-mentioned existing technology, the present invention provides a portable air tightness testing device. When performing testing, pure water is first used to discharge the gas in the test box to avoid contact between the test liquid and the air in the test box, thereby improving the accuracy of the test.

[0004] To achieve the above-mentioned purpose, the technical solution of the embodiment of the present utility model is implemented as follows:

[0005] A portable air tightness testing device includes a test box, a first tank body, a second tank body, a connector and a first air pump. The first tank body stores pure water, and the second tank body stores test liquid. The test box is connected to the first and second tank bodies through a water pipe. The test box includes a box body and a sealing cover. The sealing cover is connected to the box body. The sealing cover is provided with an overflow pipe. The overflow pipe is provided with a first control valve. The first air pump is connected to the connector through a first air pipe. The connector is used to connect to the air inlet of the device to be tested.

[0006] Furthermore, a sealing gasket is provided at the bottom of the sealing cover, and the sealing gasket is used to seal the gap between the detection box and the sealing cover.

[0007] Furthermore, the test liquid is cobalt chloride liquid.

[0008] Furthermore, the bottom of the first tank body is pure water, and the top is compressed inert gas; the bottom of the second tank body is test liquid, and the top is compressed inert gas; the water pipe is provided with a second control valve.

[0009] Furthermore, the first tank body and the second tank body are respectively connected to a second gas pipe, the second gas pipe is connected to a compressed gas cylinder, the compressed gas cylinder is filled with inert gas, and the second gas pipe is provided with a third control valve.

[0010] Furthermore, a stirring rod is provided inside the detection box, and a magnet that attracts the stirring rod is provided outside the detection box. The magnet is connected to a motor, and the motor is connected to a power supply.

[0011] Furthermore, the power supply includes a battery and a control switch, and the battery is electrically connected to the motor through the control switch.

[0012] The beneficial effect of this utility model is that when a gas leak occurs in the device under test within the test box, the leaked gas enters the test box and mixes with the test liquid, causing the color of the test liquid to change. The airtightness of the device under test can be determined based on the color of the test liquid. During the test, the gas in the test box is first discharged with pure water to prevent the test liquid from coming into contact with the air within the test box, thereby improving the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of a portable air tightness testing device in an embodiment of the present application;

[0014] Figure 2 This is a structural diagram of a portable air tightness testing device in an embodiment of the present application;

[0015] Description of Figure Numbers:

[0016] 1. Test box; 2. First tank body; 3. Second tank body; 4. Connector; 5. First air pump; 6. Box body; 7. Sealing cover; 8. Overflow pipe; 9. First control valve; 10. First air pipe; 11. Sealing gasket; 12. Second control valve; 13. Second air pipe; 14. Compressed gas cylinder; 15. Third control valve; 16. Stirring rod; 17. Magnet; 18. Motor; 19. Battery; 20. Control switch; 21. Water pipe. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the technical solution of the present invention in conjunction with the accompanying drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. In the following description, reference is made to "some embodiments", which describes a subset of all possible embodiments, but it should be understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

[0018] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0019] Example 1

[0020] Please refer to the attached Figure 1The present application provides a portable air tightness testing device, comprising a test box 1, a first tank body 2, a second tank body 3, a connector 4 and a first air pump 5, wherein the first tank body 2 stores pure water, and the second tank body 3 stores a test liquid. The test box 1 is connected to the first tank body 2 and the second tank body 3 through a water pipe 21, and the test box 1 comprises a box body 6 and a sealing cover 7, wherein the sealing cover 7 is connected to the box body 6, and the sealing cover 7 is provided with an overflow pipe 8, wherein the overflow pipe 8 is provided with a first control valve 9, and the first air pump 5 is connected to the connector 4 through a first air pipe 10, and the connector 4 is used to connect to the air inlet of the device to be tested. The device to be tested is placed in the test box 1, the connector 4 is connected to the air inlet interface of the device to be tested, and the air pump fills the device to be tested with high-pressure gas through the first air pipe 10. Cover the box body 6 with the sealing cover 7, and fill the test box 1 with pure water from the first tank body 2 through the water pipe 21. The pure water squeezes the gas in the test box 1 out of the overflow pipe 8. After the air in the test box 1 is emptied, the opening of the first control valve 9 is reduced. Then, fill the test box 1 with a high-concentration test liquid from the second tank body 3 through the water pipe 21. Before the high-concentration test liquid diffuses to the position of the first control valve 9, the first control valve 9 is completely closed. As the test liquid diffuses into the test box 1, the test liquid concentration is diluted to an appropriate concentration. When a gas leak occurs in the device to be tested in the test box 1, the leaked gas enters the test box 1 and mixes with the test liquid, causing the color of the test liquid to change. The airtightness of the device to be tested is judged based on the color of the test liquid. When performing the test, the gas in the test box 1 is first discharged with pure water to prevent the test liquid from contacting the air in the test box 1, thereby improving the accuracy of the test. Preferably, in order to allow the gas of the device to be tested to leak out, the bottom or side wall of the test box, or the sealing cover 7 may be configured as an elastic structure, or a part of the test box / sealing cover 7 may be configured as an elastic structure.

[0021] Specifically, a sealing gasket 11 is provided at the bottom of the sealing cover 7 , and the sealing gasket 11 is used to seal the gap between the detection box 1 and the sealing cover 7 , thereby improving the sealing performance between the sealing cover 7 and the detection box 1 .

[0022] Specifically, the test liquid is cobalt chloride liquid. The cobalt chloride liquid is blue. When a gas leak occurs in the device under test, the cobalt chloride liquid changes from blue to pink, thereby determining that a gas leak occurs in the device under test.

[0023] Specifically, the bottom of the first tank 2 contains pure water and the top contains compressed inert gas. The bottom of the second tank 3 contains test liquid and the top contains compressed inert gas. The water pipe 21 is provided with a second control valve 12. When the second control valve 12 connected to the first tank 2 is opened, the inert gas squeezes the pure water, causing it to be discharged from the first tank 2 into the test box 1. When the second control valve 12 connected to the second tank 3 is opened, the inert gas squeezes the test liquid, causing it to be discharged from the second tank 3 into the test box.

[0024] Example 2

[0025] Please refer to the attached Figure 2 This embodiment differs from Embodiment 1 in that the first tank body 2 and the second tank body 3 are each connected to a second gas pipe 13, which is connected to a compressed gas cylinder 14. The compressed gas cylinder 14 contains an inert gas, and the second gas pipe 13 is provided with a third control valve 15. The compressed gas cylinder 14 is used to provide high-pressure inert gas. By opening the third control valve 15 connected to the first tank body 2, the compressed inert gas can be replenished in the first tank body 2. By opening the third control valve 15 connected to the second tank body 3, the compressed inert gas can be replenished in the second tank body 3.

[0026] Specifically, the test box 1 is equipped with a stirring rod 16 within it. A magnet 17 is externally mounted on the test box 1, which attracts the stirring rod 16. The magnet 17 is connected to a motor 18, which is in turn connected to a power source. The power source supplies power to the motor 18, which rotates and drives the magnet 17. Due to the magnetic force between the magnet 17 and the stirring rod 16, the rotation of the magnet 17 drives the stirring rod 16, thereby rapidly spreading the test liquid within the test box 1.

[0027] Specifically, the power supply includes a battery 19 and a control switch 20. The battery 19 is electrically connected to the motor 18 via the control switch 20. The control switch 20 controls the battery 19 to supply power to the motor 18.

[0028] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. The scope of protection of the present utility model should be based on the scope of protection of the claims.

Claims

1. A portable air tightness testing device, characterized in that: The invention comprises a test box (1), a first tank body (2), a second tank body (3), a connector (4) and a first air pump (5); the first tank body (2) stores pure water, the second tank body (3) stores test liquid, the test box (1) is connected to the first tank body (2) and the second tank body (3) via a water pipe (21); the test box (1) comprises a box body (6) and a sealing cover (7); the sealing cover (7) is connected to the box body (6); the sealing cover (7) is provided with an overflow pipe (8); the overflow pipe (8) is provided with a first control valve (9); the first air pump (5) is connected to the connector (4) via a first air pipe (10); the connector (4) is used to be connected to the air inlet of the device to be tested.

2. A portable air tightness testing device according to claim 1, characterized in that: A sealing gasket (11) is provided at the bottom of the sealing cover (7), and the sealing gasket (11) is used to seal the gap between the detection box (1) and the sealing cover (7).

3. A portable air tightness testing device according to claim 1, characterized in that: The test liquid is cobalt chloride liquid.

4. A portable air tightness testing device according to claim 1, characterized in that: The bottom of the first tank body (2) is pure water, and the top is compressed inert gas; the bottom of the second tank body (3) is test liquid, and the top is compressed inert gas; the water pipe (21) is provided with a second control valve (12).

5. A portable air tightness testing device according to claim 1 or 4, characterized in that: The first tank body (2) and the second tank body (3) are respectively connected to a second air pipe (13), the second air pipe (13) is connected to a compressed gas cylinder (14), the compressed gas cylinder (14) contains an inert gas, and the second air pipe (13) is provided with a third control valve (15).

6. The portable air tightness testing device according to claim 1, characterized in that: A stirring rod (16) is arranged inside the detection box (1), and a magnet (17) that attracts the stirring rod (16) is arranged outside the detection box (1). The magnet (17) is connected to a motor (18), and the motor (18) is connected to a power source.

7. A portable air tightness testing device according to claim 6, characterized in that: The power source comprises a storage battery (19) and a control switch (20), and the storage battery (19) is electrically connected to the motor (18) via the control switch (20).

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