Air supply device for air tightness detection

Abstract

The utility model discloses an air supply device for air tightness detection, which comprises a base, an air storage tank and a mounting rack are arranged above the base, at least two pressure stabilizing cylinders are arranged in the mounting rack and are fixedly connected with the mounting rack, one end of each pressure stabilizing cylinder is provided with a flow meter, and the other end of each pressure stabilizing cylinder is provided with a pressure sensor. A flow meter is arranged in the gas storage tank and connected with the pressure stabilizing cylinder into a whole, a corrugated hose is arranged on one side of the flow meter, one end of the corrugated hose and the flow meter are connected into a whole, a connector is arranged at the other end of the corrugated hose, the connector and the corrugated hose are connected into a whole, and a gas outlet pipe is arranged below the gas storage tank. According to the gas supply device, at least two groups of gas supply structures are integrated together, gas can be supplied to multiple gas tightness detections at the same time, the gas supply structures are mutually independent, the gas supply requirements of different gas tightness detections can be met, and the gas supply effect for gas tightness detection is improved.

Description

Technical Field

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

[0002] Air tightness testing is a technical means to ensure that products or equipment maintain their sealing performance during use, preventing leakage of gases, liquids, or other media. It involves using specific testing methods to detect whether a product or equipment exhibits leakage under specific conditions. Its purpose is to ensure that products or equipment will not leak during use, thereby guaranteeing their performance and quality. This type of testing is widely used in many fields to ensure the safe and stable operation of products. A stable gas supply is essential for reliable air tightness testing.

[0003] Chinese Patent Publication No. CN215931203U, authorized on March 1, 2022, discloses a gas supply device for testing the air tightness of a combustion system, comprising: a fan; a pressure stabilizing tank, with its inlet connected to the outlet of the fan; a flow meter, with its inlet connected to the outlet of the pressure stabilizing tank; a valve disposed between the flow meter and the pressure stabilizing tank; and a pressure sampling cylinder, with its inlet connected to the outlet of the flow meter, and a pressure sampling nozzle provided on the side wall of the pressure sampling cylinder, the nozzle being connected to a micro-pressure transmitter. The gas supply device for testing the air tightness of a combustion system provided by this utility model is easy to operate, cost-effective, highly versatile, and provides high stability of the output gas, meeting the control requirements of gas pressure and flow rate during low-pressure air tightness testing.

[0004] The existing gas supply device only has one gas supply structure, which can only meet the gas supply needs of one air tightness test. It cannot be used for multiple air tightness tests at the same time. Other gas supply devices are needed to meet the gas supply needs, which reduces the gas supply effect and cannot meet the usage requirements. Utility Model Content

[0005] The purpose of this utility model is to provide an air supply device for air tightness testing, so as to solve the problem mentioned in the background art that the existing air supply device only has one set of air supply structure, which can only meet the air supply needs of one air tightness test, and cannot be used for multiple air tightness tests at the same time. Other air supply devices are needed to meet the air supply needs, which reduces the air supply effect and fails to meet the usage requirements.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gas supply device for airtightness testing, comprising a base, an air storage tank and a mounting frame disposed on the top of the base, the air storage tank and the mounting frame being fixedly connected to the base, a pressure stabilizing cylinder disposed inside the mounting frame, at least two pressure stabilizing cylinders being disposed, the pressure stabilizing cylinders being fixedly connected to the mounting frame, a flow meter disposed at one end of the pressure stabilizing cylinder, the flow meter being integrally connected to the pressure stabilizing cylinder, a corrugated hose disposed on one side of the flow meter, one end of the corrugated hose being integrally connected to the flow meter, a connector disposed at the other end of the corrugated hose, the connector being integrally connected to the corrugated hose, and an air outlet pipe disposed below the air storage tank, the two ends of the air outlet pipe being integrally connected to the lower ends of the air storage tank and the pressure stabilizing cylinder respectively.

[0007] Preferably, the air outlet pipe is equipped with a pressure regulating valve, and the pressure regulating valve is integrated with the air outlet pipe.

[0008] Preferably, the pressure stabilizing cylinder has a disc inside, and the disc is rotatably connected to the pressure stabilizing cylinder. A connecting rod is provided above the pressure stabilizing cylinder, and the connecting rod is rotatably connected to both the mounting frame and the pressure stabilizing cylinder. An adjusting knob is provided above the mounting frame, and the two ends of the connecting rod are fixedly connected to the adjusting knob and the disc, respectively.

[0009] Preferably, a silicone ring is provided on the outside of the disc, and the silicone ring is integrated with the disc, and the silicone ring is in contact with the inner wall of the pressure stabilizing cylinder.

[0010] Preferably, a dynamic sealing ring is provided at the contact point between the connecting rod and the pressure stabilizing cylinder, and the dynamic sealing ring is integrally connected with the pressure stabilizing cylinder. The dynamic sealing ring is located on the outside of the connecting rod and is rotatably connected to the connecting rod.

[0011] Preferably, the other end of the pressure stabilizing cylinder is provided with a vent valve assembly, and the vent valve assembly is integrated with the pressure stabilizing cylinder.

[0012] Preferably, a self-locking caster assembly is provided below the base, and four self-locking caster assemblies are provided. The self-locking caster assemblies are connected to the base by screws. The four self-locking caster assemblies are located at the four corners of the base. A push-pull bracket is provided above one end of the base, and the push-pull bracket is connected to the base by screws.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model device is configured with a gas storage tank, a gas outlet pipe, a pressure regulating valve, a pressure stabilizing cylinder, a flow meter, a corrugated hose, and a connector. The corrugated hose and connector connect the gas supply device to the air tightness testing equipment. The pressure regulating valve reduces the pressure of the high-pressure gas in the gas storage tank and injects it into the pressure stabilizing cylinder through the gas outlet pipe. The reduced-pressure gas is then sent into the air tightness testing equipment through the corrugated hose to achieve gas supply. The flow meter measures the gas sent into the air tightness testing equipment and controls the gas supply.

[0015] 2. This utility model device, through the setting of adjusting knob, vent valve assembly, disc and connecting rod, rotates the adjusting knob to drive the connecting rod to rotate. The connecting rod is fixedly connected to the disc. As the connecting rod rotates, it drives the disc to rotate in the pressure stabilizing cylinder. As the disc rotates, it changes the angle between the disc and the pressure stabilizing cylinder, thereby adjusting the gas flow port diameter of the pressure stabilizing cylinder and thus adjusting the gas supply speed. The vent valve assembly opens after the gas supply is completed, venting the gas remaining in the gas supply structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 For the present utility model Figure 1 A magnified view of a portion of area A;

[0018] Figure 3 This is a cross-sectional view of the pressure stabilizing cylinder of this utility model;

[0019] Figure 4 This is a diagram showing the connection relationship between the disc and the pressure stabilizing cylinder of this utility model.

[0020] In the diagram: 1. Base; 2. Self-locking caster assembly; 3. Push-pull bracket; 4. Gas tank; 5. Gas outlet pipe; 6. Pressure regulating valve; 7. Mounting bracket; 8. Pressure stabilizing cylinder; 9. Flow meter; 10. Corrugated hose; 11. Connector; 12. Adjustment knob; 13. Exhaust valve assembly; 14. Disc; 15. Connecting rod; 16. Silicone ring; 17. Dynamic sealing ring. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4This utility model provides an embodiment of an airtightness testing air supply device, comprising a base 1, an air storage tank 4 and a mounting frame 7 arranged above the base 1, and the air storage tank 4 and the mounting frame 7 are fixedly connected to the base 1. A pressure stabilizing cylinder 8 is arranged inside the mounting frame 7, at least two pressure stabilizing cylinders 8 are arranged, and the pressure stabilizing cylinder 8 is fixedly connected to the mounting frame 7. A flow meter 9 is arranged at one end of the pressure stabilizing cylinder 8, and the flow meter 9 is integrated with the pressure stabilizing cylinder 8. A corrugated hose 10 is arranged on one side of the flow meter 9, and one end of the corrugated hose 10 is integrated with the flow meter 9. A connector 11 is arranged at the other end of the corrugated hose 10, and the connector 11 is integrated with the corrugated hose 10. An air outlet pipe 5 is arranged below the air storage tank 4, and both ends of the air outlet pipe 5 are integrated with the lower ends of the air storage tank 4 and the pressure stabilizing cylinder 8, respectively. A pressure regulating valve 6 is arranged on the air outlet pipe 5, and the pressure regulating valve 6 is integrated with the air outlet pipe 5.

[0023] In use: Connect connector 11 to the air supply port of the air tightness testing equipment, open pressure regulating valve 6 to reduce the pressure of high-pressure gas in air storage tank 4 and inject it into pressure stabilizing cylinder 8 through air outlet pipe 5, and then send it into air tightness testing equipment through corrugated hose 10 to achieve air supply. Flow meter 9 measures the gas sent into air tightness testing equipment and controls the gas supply.

[0024] Please see Figure 1 , Figure 3 and Figure 4 The pressure stabilizing cylinder 8 has a disc 14 inside, which is rotatably connected to the pressure stabilizing cylinder 8. A connecting rod 15 is located above the pressure stabilizing cylinder 8, and is rotatably connected to both the mounting bracket 7 and the pressure stabilizing cylinder 8. An adjusting knob 12 is located above the mounting bracket 7, and both ends of the connecting rod 15 are fixedly connected to the adjusting knob 12 and the disc 14, respectively. A silicone ring 16 is located on the outside of the disc 14, and is integrally connected to the disc 14. The silicone ring 16 fits against the inner wall of the pressure stabilizing cylinder 8. The connecting rod 15 is connected to the pressure stabilizing cylinder 8... A dynamic sealing ring 17 is provided at the contact point of the cylinder 8, and the dynamic sealing ring 17 is integrated with the pressure stabilizing cylinder 8. The dynamic sealing ring 17 is located outside the connecting rod 15, and the dynamic sealing ring 17 is rotatably connected to the connecting rod 15. Rotating the adjusting knob 12 drives the connecting rod 15 to rotate. The connecting rod 15 is fixedly connected to the disc 14. As the connecting rod 15 rotates, the disc 14 rotates in the pressure stabilizing cylinder 8. As the disc 14 rotates, the angle between it and the pressure stabilizing cylinder 8 changes, thereby adjusting the gas flow port diameter of the pressure stabilizing cylinder 8 and thus adjusting the gas supply speed.

[0025] Please see Figure 1 and Figure 2 The other end of the pressure stabilizing cylinder 8 is provided with a vent valve assembly 13, and the vent valve assembly 13 is connected to the pressure stabilizing cylinder 8 as a whole. The vent valve assembly 13 opens after the gas supply is completed to discharge the gas remaining in the gas supply structure.

[0026] Please see Figure 1 A self-locking moving wheel assembly 2 is provided below the base 1. There are four self-locking moving wheel assemblies 2, and the self-locking moving wheel assemblies 2 are connected to the base 1 by screws. The four self-locking moving wheel assemblies 2 are located at the four corners of the base 1. A push-pull bracket 3 is provided above one end of the base 1, and the push-pull bracket 3 is connected to the base 1 by screws. The self-locking moving wheel assembly 2 and the push-pull bracket 3 can move the air supply device and fix the air supply device.

[0027] Working principle: Connect connector 11 to the air supply port of the air tightness testing equipment. Open pressure regulating valve 6 to reduce the pressure of high-pressure gas in storage tank 4 and inject it into pressure stabilizing cylinder 8 through outlet pipe 5. Rotate adjustment knob 12 according to the air supply speed. Adjustment knob 12 drives connecting rod 15 to rotate. Connecting rod 15 is fixedly connected to disc 14. As connecting rod 15 rotates, disc 14 rotates in pressure stabilizing cylinder 8. As disc 14 rotates, the angle between it and pressure stabilizing cylinder 8 changes, adjusting the gas flow diameter of pressure stabilizing cylinder 8. Then, the gas is sent into the air tightness testing equipment through corrugated hose 10 to achieve air supply. Flow meter 9 measures the gas sent into the air tightness testing equipment and controls the gas supply. Self-locking moving wheel assembly 2 and push-pull frame 3 can realize the movement of the gas supply device and can fix the gas supply device.

[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art. It should also be noted that the airtightness testing air supply device disclosed in this utility model has a wide range of applications, including but not limited to handheld tools.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air supply device for air tightness testing, comprising a base (1), characterized in that: A gas storage tank (4) and a mounting bracket (7) are provided above the base (1), and the gas storage tank (4) and the mounting bracket (7) are fixedly connected to the base (1). A pressure stabilizing cylinder (8) is provided inside the mounting bracket (7). There are at least two pressure stabilizing cylinders (8), and the pressure stabilizing cylinder (8) is fixedly connected to the mounting bracket (7). A flow meter (9) is provided at one end of the pressure stabilizing cylinder (8), and the flow meter (9) is connected to the pressure stabilizing cylinder (8) as a whole. A corrugated hose (10) is provided on one side of the flow meter (9), and one end of the corrugated hose (10) is connected to the flow meter (9) as a whole. A connector (11) is provided at the other end of the corrugated hose (10), and the connector (11) is connected to the corrugated hose (10) as a whole. An air outlet pipe (5) is provided below the gas storage tank (4), and both ends of the air outlet pipe (5) are connected to the lower ends of the gas storage tank (4) and the pressure stabilizing cylinder (8) as a whole.

2. The air supply device for air tightness testing according to claim 1, characterized in that: The air outlet pipe (5) is equipped with a pressure regulating valve (6), and the pressure regulating valve (6) is connected to the air outlet pipe (5) as a whole.

3. The air supply device for air tightness testing according to claim 1, characterized in that: The pressure stabilizing cylinder (8) has a disc (14) inside, and the disc (14) is rotatably connected to the pressure stabilizing cylinder (8). A connecting rod (15) is provided above the pressure stabilizing cylinder (8), and the connecting rod (15) is rotatably connected to both the mounting frame (7) and the pressure stabilizing cylinder (8). An adjusting knob (12) is provided above the mounting frame (7), and the two ends of the connecting rod (15) are fixedly connected to the adjusting knob (12) and the disc (14) respectively.

4. The air supply device for air tightness testing according to claim 3, characterized in that: The outer side of the disc (14) is provided with a silicone ring (16), and the silicone ring (16) is connected to the disc (14) as a whole. The silicone ring (16) is in contact with the inner wall of the pressure stabilizing cylinder (8).

5. The air supply device for air tightness testing according to claim 3, characterized in that: A dynamic sealing ring (17) is provided at the contact point between the connecting rod (15) and the pressure stabilizing cylinder (8), and the dynamic sealing ring (17) is connected to the pressure stabilizing cylinder (8) as a whole. The dynamic sealing ring (17) is located outside the connecting rod (15), and the dynamic sealing ring (17) is rotatably connected to the connecting rod (15).

6. The air supply device for air tightness testing according to claim 1, characterized in that: The other end of the pressure stabilizing cylinder (8) is provided with a vent valve assembly (13), and the vent valve assembly (13) is connected to the pressure stabilizing cylinder (8) as a whole.

7. The air supply device for air tightness testing according to claim 1, characterized in that: A self-locking moving wheel assembly (2) is provided below the base (1). There are four self-locking moving wheel assemblies (2), and the self-locking moving wheel assembly (2) is connected to the base (1) by screws. The four self-locking moving wheel assemblies (2) are located at the four corners of the base (1). A push-pull bracket (3) is provided above one end of the base (1), and the push-pull bracket (3) is connected to the base (1) by screws.

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