Air pressure leak detection device for air cylinder

Abstract

The utility model discloses an air pressure leak detection device for a cylinder, which comprises a frame, an air outlet pipeline system and an air inlet pipeline system are respectively arranged on the frame, the air outlet pipeline system is arranged at the air inlet end of the air inlet pipeline system, and the air outlet pipeline system is communicated with the air inlet pipeline system; the gas inlet end of the gas inlet pipeline system is communicated with a gas inlet metal hose; the gas inlet metal hose is connected with a gas cylinder through a pipeline; the air outlet end of the air inlet pipeline system is communicated with an air outlet metal hose, the other end of the air outlet metal hose is communicated with an annular pipe, and the annular pipe is provided with a plurality of conversion connectors used for being connected with an air cylinder. The device can effectively detect the air tightness of the rocket charging and discharging connector cylinder, and has the advantages of simple structure and convenient installation and disassembly.

Description

Technical Field

[0001] This utility model relates to a pneumatic leak detection device for cylinders, belonging to the technical field of leak detection devices. Background Technology

[0002] As a key component in the industrial field, cylinders require extremely high sealing and reliability in their working environment. Before use, airtightness testing is necessary. Traditional pneumatic testing fixtures have the following problems: During installation, their complex structural design involves the precise coordination of multiple components, leading to cumbersome procedures that often require specialized technicians to spend considerable time on debugging and installation, thus reducing efficiency in the test preparation phase. Furthermore, traditional fixtures are bulky, placing significant demands on site layout within limited testing areas and restricting the placement and use of other equipment. They also consume a large amount of energy during operation, continuously consuming substantial amounts of electricity and compressed gas, putting considerable pressure on energy resources. Therefore, designing a leak detection device that is easy to install and disassemble, environmentally friendly, and practical has become a focus of industry research. Utility Model Content

[0003] The purpose of this invention is to provide a cylinder air pressure leak detection device. This invention can effectively detect the air tightness of multiple cylinders. Furthermore, this invention is low in cost and easy to operate.

[0004] The technical solution of this utility model is as follows: A cylinder air pressure leak detection device includes a frame, on which an outlet pipe system and an inlet pipe system are respectively provided. The outlet pipe system is located at the inlet end of the inlet pipe system and is interconnected with the inlet pipe system. The inlet end of the inlet pipe system is connected to an inlet metal hose, which is connected to a gas cylinder via a pipe. The outlet end of the inlet pipe system is connected to an outlet metal hose, and the other end of the outlet metal hose is connected to an annular pipe. The annular pipe is provided with multiple conversion connectors for connecting cylinders.

[0005] The aforementioned cylinder air pressure leak detection device has a pressure gauge on the frame, and the detection end of the pressure gauge extends into the air inlet pipeline system.

[0006] The aforementioned cylinder air pressure leak detection device has an inlet shut-off valve at the inlet end of the inlet pipeline system and an outlet shut-off valve at the outer end of the outlet pipeline system.

[0007] The aforementioned cylinder air pressure leak detection device has a safety valve installed on the air inlet pipeline system near the air outlet.

[0008] The aforementioned cylinder air pressure leak detection device has a first standard adapter at both ends of the air inlet metal hose and a second standard adapter at both ends of the air outlet metal hose.

[0009] The aforementioned cylinder air pressure leak detection device has a first handwheel and a second handwheel rotatably connected above the frame. The first handwheel passes through the frame and is connected to the control end of the air inlet shut-off valve; the second handwheel passes through the frame and is connected to the control end of the air outlet shut-off valve.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. This utility model features simple components. Assembly is achieved by connecting the inlet metal hose, inlet piping system, outlet piping system, outlet metal hose, and annular pipe. The cylinder under test is then connected to the adapters via piping. Multiple adapters on the annular pipe can connect multiple cylinders simultaneously, facilitating the testing of multiple cylinders at once. The cylinder under test is then placed in a water tank, and test gas is introduced through the inlet metal hose. The gas enters the cylinder through the aforementioned piping, and the presence of air bubbles in the water tank is observed to determine the airtightness of the cylinder.

[0012] 2. This utility model controls the entry and exit of gas through an outlet shut-off valve and an inlet shut-off valve. By opening the inlet shut-off valve, gas can enter the pipeline. After the test is completed, the outlet shut-off valve is opened to discharge the gas in the pipeline.

[0013] 3. In this utility model, the pressure gauge on the frame can monitor the air pressure changes in the pipeline in real time, ensuring the accuracy of the detection data. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a structural diagram of the frame;

[0016] Figure 3 This is a partial structural diagram of the cylinder during testing.

[0017] The markings in the attached diagram are as follows: 1-ring pipe, 2-inlet metal hose, 3-outlet metal hose, 4-safety valve, 5-frame, 6-pressure gauge, 7-outlet shut-off valve, 8-inlet shut-off valve, 9-outlet piping system, 10-inlet piping system, 11-adapter, 12-first standard adapter, 13-second standard adapter, 14-gas cylinder, 15-first handwheel, 16-second handwheel. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0019] Example: A cylinder air pressure leak detection device, configured as follows Figure 1-3 As shown, it includes a frame 5, which is made of high-strength aluminum alloy, combining lightweight and structural stability. The frame 5 is equipped with an air outlet pipe system 9 and an air inlet pipe system 10, as shown... Figure 2 As shown, the outlet pipe system 9 is located at the inlet end of the inlet pipe system 10, and the outlet pipe system 9 and the inlet pipe system 10 are interconnected. The inlet end of the inlet pipe system 10 is connected to an inlet metal hose 2, which is connected to a gas cylinder 14 via a pipe. The gas cylinder 14 provides gas for testing. The outlet end of the inlet pipe system 10 is connected to an outlet metal hose 3, the other end of which is connected to an annular pipe 1. The annular pipe 1 is made of 304 stainless steel, which is pressure-resistant and corrosion-resistant. Multiple adapters 11 for connecting cylinders are provided on the annular pipe 1. The adapters 11 are nickel-plated to enhance wear resistance and sealing performance. The combination design of the annular pipe 1 and the adapters 11 can adapt to the interface forms of cylinders of different specifications, avoiding the cumbersome tooling replacement problem caused by model differences and significantly improving test preparation efficiency. The inlet metal hose 2 and outlet metal hose 3 are made of stainless steel braided mesh wrapped around a rubber inner tube, combining flexibility and pressure resistance. Assembly is completed by connecting the inlet metal hose 2, inlet piping system 10, outlet piping system 9, outlet metal hose 3, and annular pipe 1. Then, the cylinder under test is connected to the adapter 11 through the piping. Multiple adapters 11 on the annular pipe 1 can connect to multiple cylinders under test simultaneously, facilitating the testing of multiple cylinders at once. Figure 3 As shown, the cylinder to be tested is then placed in the water tank, and test gas is introduced through the inlet metal hose 2. The gas enters the cylinder to be tested through the above-mentioned pipeline, and the presence of air bubbles in the water tank is observed to test the airtightness of the cylinder to be tested. If the number of cylinders to be tested is less than the number of adapters 11, the adapters can be covered with a cover to seal them.

[0020] Preferably, such as Figure 1 and Figure 2 As shown, a pressure gauge 6 is provided on the frame 5. The detection end of the pressure gauge 6 extends into the air inlet pipeline system 10, and the pressure gauge 6 monitors the air pressure changes in the pipeline in real time.

[0021] Preferably, such as Figure 1As shown, the inlet pipe system 10 is equipped with an inlet shut-off valve 8 at the inlet end; the outlet pipe system 9 is equipped with an outlet shut-off valve 7 at the outer end. The inlet and outlet shut-off valves 7 and 8 control the entry and exit of gas. By opening the inlet shut-off valve 8, gas can enter the pipe. After the test is completed, the outlet shut-off valve 7 is opened to discharge the gas in the pipe.

[0022] Preferably, such as Figure 1 and Figure 2 As shown, a safety valve 4 is installed on the air inlet pipeline system 10 near the air outlet. When the air pressure in the pipeline exceeds the safety threshold, the safety valve 4 automatically releases pressure to prevent the pipeline from bursting or the test piece from being damaged due to excessive air pressure, thus ensuring the safety of the testing process.

[0023] Preferably, such as Figure 1 As shown, the inlet metal hose 2 has a first standard adapter 12 at both ends; the outlet metal hose 3 has a second standard adapter 13 at both ends.

[0024] Preferably, such as Figure 2 As shown, a first handwheel 15 and a second handwheel 16 are rotatably connected above the frame 5. The first handwheel 15 passes through the frame 5 and is connected to the control end of the air inlet shut-off valve 8; the second handwheel 16 passes through the frame 5 and is connected to the control end of the air outlet shut-off valve 7. The first handwheel 15 and the second handwheel 16 facilitate the control of the opening and closing of the corresponding shut-off valves.

[0025] Working principle:

[0026] Connect gas cylinder 14 to inlet metal hose 2, connect the cylinder under test to adapter 11, and open inlet shut-off valve 8. The test gas in gas cylinder 14 enters inlet pipeline system 10 through inlet metal hose 2, flows into annular pipe 1 through outlet metal hose 3, and then enters cylinder under test through adapter 11. During testing, place cylinder under test in water tank. If the cylinder has a sealing defect, gas will escape and generate bubbles in the water tank. The leakage situation can be determined by observing the bubbles. After the test is completed, open outlet shut-off valve 7 on outlet pipeline system 9 to discharge residual gas.

Claims

1. A pneumatic leak detection device for cylinders, characterized in that: The system includes a frame (5), on which an outlet pipe system (9) and an inlet pipe system (10) are respectively provided. The outlet pipe system (9) is located at the inlet end of the inlet pipe system (10), and the outlet pipe system (9) and the inlet pipe system (10) are interconnected. The inlet end of the inlet pipe system (10) is connected to an inlet metal hose (2), and the inlet metal hose (2) is connected to a gas cylinder (14) via a pipe. The outlet end of the inlet pipe system (10) is connected to an outlet metal hose (3), and the other end of the outlet metal hose (3) is connected to an annular pipe (1). The annular pipe (1) is provided with multiple conversion connectors (11) for connecting cylinders.

2. The cylinder pressure leak detection device according to claim 1, characterized in that: The frame (5) is equipped with a pressure gauge (6), and the detection end of the pressure gauge (6) extends into the air inlet pipeline system (10).

3. The cylinder pressure leak detection device according to claim 1, characterized in that: The air inlet pipe system (10) is provided with an air inlet shut-off valve (8) at the air inlet end; the air outlet pipe system (9) is provided with an air outlet shut-off valve (7) at the outer end.

4. The cylinder pressure leak detection device according to claim 1, characterized in that: A safety valve (4) is provided on the air inlet pipeline system (10) near the air outlet.

5. The cylinder pressure leak detection device according to claim 1, characterized in that: The inlet metal hose (2) has a first standard adapter (12) at both ends; the outlet metal hose (3) has a second standard adapter (13) at both ends.

6. The cylinder pressure leak detection device according to claim 3, characterized in that: A first handwheel (15) and a second handwheel (16) are rotatably connected above the frame (5). The first handwheel (15) passes through the frame (5) and is connected to the control end of the air inlet shut-off valve (8); the second handwheel (16) passes through the frame (5) and is connected to the control end of the air outlet shut-off valve (7).

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