Built-in pressure stabilizing gas tank of airtightness detector

Abstract

The utility model discloses a built-in pressure stabilizing gas tank of an air tightness detector, which relates to the technical field of air tightness detection and comprises an air tightness detector main body, a baffle is arranged at the rear end of the air tightness detector main body, and an air delivery pipe is arranged in the rear end of the air tightness detector main body. According to the utility model, the plurality of pressure stabilizing gas tank main bodies are arranged in the gas tightness detector main body, the plurality of pressure stabilizing gas tank main bodies are connected into the gas conveying pipe together, and the pressure switches of the plurality of pressure stabilizing gas tank main bodies are controlled through the first electronic valve; meanwhile, opening and closing of two pressure stabilizing gas tank main bodies are controlled through a second electronic valve, so that when the pressure stabilizing gas tank main body close to the gas outlet pipe breaks down, the problem that in the prior art, when an airtight detector is used, the pressure stabilizing gas tanks cannot be replaced frequently, and the pressure stabilizing gas tanks cannot be replaced is solved; and meanwhile, the detection quality of a product can be influenced when the airtight detector breaks down in use.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, and in particular to an airtightness tester with a built-in pressure stabilizing gas tank. Background Technology

[0002] An airtightness tester is a device used to test the sealing performance of an object or system. It is mainly used to measure gas leakage rate or pressure changes to ensure that it meets design requirements. It determines whether there is a leak by filling the object under test with gas and monitoring pressure changes or gas flow. Airtightness testers are widely used in industries such as automotive, medical, home appliances, and packaging to test the sealing performance of parts, containers, or systems. Its core components include pressure sensors, flow meters, control systems, and data analysis modules, enabling high-precision and automated testing. According to the testing principle, it can be divided into pressure drop method, flow method, and differential pressure method, etc. Airtightness testers are characterized by high efficiency, accuracy, and non-destructive operation, and are an important tool for ensuring product quality and safety.

[0003] However, in existing technologies, traditional airtightness testers typically have only one built-in pressure stabilizing gas tank. After the pressure stabilizing gas tank stabilizes the pressure of the gas supply pipe, the internal pressure often changes. When the internal pressure of the pressure stabilizing gas tank decreases, it cannot play a pressure stabilizing role. This makes it difficult to replace the pressure stabilizing gas tank during use. Furthermore, when the airtightness tester malfunctions during use, it will affect the testing quality of the product. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the prior art where the pressure stabilizing gas tank cannot be replaced during the use of the air tightness tester, and where the tester's failure during use affects the quality of the product's testing. Therefore, this invention proposes an air tightness tester with a built-in pressure stabilizing gas tank.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: It includes an airtightness testing instrument body, a baffle plate at the rear end of the airtightness testing instrument body, an air supply pipe inside the rear end of the airtightness testing instrument body, the airtightness testing instrument body being connected to the inside of the air supply pipe via an air inlet pipe, an air outlet pipe at one end of the air supply pipe, several pressure stabilizing gas tank bodies below the air supply pipe, a first connecting pipe at the bottom end of the air supply pipe matching the number of pressure stabilizing gas tank bodies, a sealing nut threadedly connected to the end of the first connecting pipe near the pressure stabilizing gas tank body, a second connecting pipe at the end of each pressure stabilizing gas tank body near the first connecting pipe, the top end of the second connecting pipe being threadedly connected to the sealing nut, and a first electronic valve on each of the second connecting pipes and the first connecting pipe.

[0006] Preferably, the bottom surface inside the rear end of the airtightness tester body is provided with a limiting groove that matches the number of pressure stabilizing gas tank bodies, a rear fixing ring is fixed inside the lower rear end of the airtightness tester body, and a front fixing ring is fixed inside the bottom surface inside the rear end of the airtightness tester body by bolts.

[0007] Preferably, a second electronic valve is provided in the middle of the gas supply pipe, and the second electronic valve is located between the gas inlet pipe and the main body of the pressure stabilizing gas tank in the middle.

[0008] Preferably, the end of the first connecting tube near the second connecting tube is fitted with the second connecting tube, and a sealing rubber is provided at the fitting point between the second connecting tube and the first connecting tube.

[0009] Preferably, each of the pressure stabilizing gas tanks has a limit block at both ends above the main body, one of the limit blocks is fixedly connected to the main body of the airtightness tester, and the other limit block is fixedly connected to the baffle.

[0010] Preferably, the rear fixing ring and the front fixing ring are both semi-circular rings, and the radii of the rear fixing ring and the front fixing ring are the same as the outer radius of the pressure stabilizing gas tank body.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, multiple pressure-stabilizing gas tanks are installed inside the main body of the airtightness tester, and these multiple pressure-stabilizing gas tanks are connected together to the gas supply pipe. The pressure switches of the multiple pressure-stabilizing gas tanks are controlled by a first electronic valve, and the switches of two of the pressure-stabilizing gas tanks are controlled by a second electronic valve. Thus, when the pressure-stabilizing gas tank closest to the gas outlet pipe malfunctions, the second electronic valve and the corresponding first electronic valve are opened, allowing the other two pressure-stabilizing gas tanks to stabilize the pressure inside the gas supply pipe. At the same time, the first electronic valve on the malfunctioning first connecting pipe is closed, allowing the malfunctioning pressure-stabilizing gas tank to be replaced. This solves the problem in the prior art that the pressure-stabilizing gas tanks often cannot be replaced during the use of the airtightness tester, and that malfunctions in the airtightness tester affect the testing quality of the product.

[0013] 2. In this utility model, by opening a limiting groove inside the main body of the airtightness tester to match the number of pressure stabilizing gas tank bodies, and fixing the lower part of the pressure stabilizing gas tank body with a rear fixing ring and a front fixing ring, while the limiting blocks at both ends of the pressure stabilizing gas tank body fix the upper part of the pressure stabilizing gas tank body, it is possible to prevent the pressure stabilizing gas tank body from shaking when stabilizing the pressure inside the gas transmission pipe, thereby affecting the airtightness of the connection between the pressure stabilizing gas tank body and the gas transmission pipe, and thus affecting the working quality of the pressure stabilizing gas tank body in stabilizing the pressure inside the gas transmission pipe. Attached Figure Description

[0014] Figure 1 This utility model provides a three-dimensional structural diagram of the rear end of a built-in pressure stabilizing gas tank in an airtightness tester.

[0015] Figure 2 This utility model provides a three-dimensional structural diagram of the built-in pressure stabilizing gas tank of an airtightness tester after opening;

[0016] Figure 3 This utility model provides a rear-view three-dimensional structural diagram of the built-in pressure stabilizing gas tank of an airtightness tester.

[0017] Figure 4 This invention provides a partial A-dimensional structural diagram of a pressure-stabilizing gas tank built into an airtightness tester.

[0018] Legend: 1. Air tightness tester body; 2. Air inlet pipe; 3. Air delivery pipe; 4. Air outlet pipe; 5. Pressure stabilizing gas tank body; 6. Sealing nut; 7. First electronic valve; 8. Second electronic valve; 9. Limiting groove; 10. Rear fixing ring; 11. Front fixing ring; 12. First connecting pipe; 13. Limiting block; 14. Second connecting pipe; 15. Baffle. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification. Example 1

[0021] like Figure 1-4As shown, this utility model provides a built-in pressure stabilizing gas tank for an airtightness tester, including an airtightness tester body 1, a baffle 15 at the rear end of the airtightness tester body 1, and an air supply pipe 3 inside the rear end of the airtightness tester body 1. The airtightness tester body 1 is connected to the interior of the air supply pipe 3 through an air inlet pipe 2. An air outlet pipe 4 is opened at one end of the air supply pipe 3. Several pressure stabilizing gas tank bodies 5 are arranged below the air supply pipe 3. A first connecting pipe 12 matching the number of pressure stabilizing gas tank bodies 5 is opened at the bottom end of the air supply pipe 3. A sealing nut 6 is threadedly connected to the end of the first connecting pipe 12 near the pressure stabilizing gas tank body 5. A second connecting pipe 14 is provided at the end of each pressure stabilizing gas tank body 5 near the first connecting pipe 12. The top end of the second connecting pipe 14 is threadedly connected to the sealing nut 6. A first electronic valve 7 is provided on each second connecting pipe 14 and the first connecting pipe 12, so that when one pressure stabilizing gas tank body 5 fails, the other pressure stabilizing gas tank bodies 5 can stabilize the pressure of the air supply pipe 3.

[0022] The specific settings and functions of this embodiment are described below: A second electronic valve 8 is provided in the middle of the gas supply pipe 3. The second electronic valve 8 is located between the gas inlet pipe 2 and the pressure stabilizing gas tank body 5 in the middle. The end of the first connecting pipe 12 near the second connecting pipe 14 is attached to the second connecting pipe 14. A sealing rubber is provided at the attachment point between the second connecting pipe 14 and the first connecting pipe 12 to improve the sealing between the pressure stabilizing gas tank body 5 and the gas supply pipe 3. Example 2

[0023] like Figure 1-4 As shown, the bottom rear end of the airtightness tester body 1 is provided with a limiting groove 9 that matches the number of pressure stabilizing gas tank bodies 5. A rear fixing ring 10 is fixed to the lower rear end of the airtightness tester body 1, and a front fixing ring 11 is fixed to the bottom rear end of the airtightness tester body 1 by bolts to prevent the pressure stabilizing gas tank bodies 5 from loosening during use.

[0024] The overall effect of this embodiment is that each pressure stabilizing gas tank body 5 is provided with limit blocks 13 at both ends above it. One limit block 13 is fixedly connected to the airtightness tester body 1, and the other limit block 13 is fixedly connected to the baffle 15. The rear fixing ring 10 and the front fixing ring 11 are the same semi-circular ring shape. The radius of the rear fixing ring 10 and the front fixing ring 11 is the same as the outer radius of the pressure stabilizing gas tank body 5, thereby improving the fixing strength of the rear fixing ring 10 and the front fixing ring 11 to the pressure stabilizing gas tank body 5.

[0025] The operating method and working principle of this device are as follows: When the main body 1 of the airtightness tester is working, gas is introduced into the gas supply pipe 3 through the inlet pipe 2 and then into the test scenario through the outlet pipe 4. At this time, the pressure stabilizing gas tank body 5 near the outlet pipe 4 stabilizes the gas pressure inside the gas supply pipe 3. Simultaneously, when the pressure stabilizing gas tank body 5 near the outlet pipe 4 malfunctions, causing unstable gas pressure inside the gas supply pipe 3, the second electronic valve 8 is opened, allowing another pressure stabilizing gas tank body 5 to supplement the gas pressure inside the gas supply pipe 3, thereby stabilizing the gas pressure inside the gas supply pipe 3. At the same time, the two first electronic valves 7 above the malfunctioning pressure stabilizing gas tank body 5 are closed. Then, the operator can open the corresponding sealing nut 6 to release the malfunctioning pressure stabilizing gas tank body 5 from the gas supply pipe 3, thus allowing for replacement of the malfunctioning pressure stabilizing gas tank body 5. When the pressure stabilizing gas tank body 5 is in operation, the fixing bolts on the front fixing ring 11 are opened, thereby releasing the restriction of the front fixing ring 11 on the pressure stabilizing gas tank body 5. At this time, the operator can take the pressure stabilizing gas tank body 5 out of the limiting groove 9, and then align the new pressure stabilizing gas tank body 5 with the limiting groove 9 and put it into the limiting groove 9. Then, the front fixing ring 11 is attached to the pressure stabilizing gas tank body 5 for fixation, thereby fixing the new pressure stabilizing gas tank body 5. At this time, the operator can rotate the sealing nut 6 to make the pressure stabilizing gas tank body 5 connect to the gas supply pipe 3 through the limiting block 13 and fix it below the gas supply pipe 3. When the operator closes the baffle 15, the limiting block 13 at the end of the baffle 15 near the pressure stabilizing gas tank body 5 limits the upper part of the pressure stabilizing gas tank body 5, so that the pressure stabilizing gas tank body 5 is fixed inside the airtightness tester body 1.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A pressure-stabilizing gas tank built into an airtightness tester, comprising an airtightness tester body (1), wherein a baffle (15) is provided at the rear end of the airtightness tester body (1), characterized in that: The air tightness tester body (1) is provided with an air supply pipe (3) inside its rear end. The air tightness tester body (1) is connected to the air supply pipe (3) through an air inlet pipe (2). An air outlet pipe (4) is provided at one end of the air supply pipe (3). Several pressure stabilizing gas tank bodies (5) are provided below the air supply pipe (3). A first connecting pipe (12) matching the number of pressure stabilizing gas tank bodies (5) is provided at the bottom end of the air supply pipe (3). A sealing nut (6) is threaded to the end of the first connecting pipe (12) near the pressure stabilizing gas tank body (5). A second connecting pipe (14) is provided at the end of each pressure stabilizing gas tank body (5) near the first connecting pipe (12). The top end of the second connecting pipe (14) is threaded to the sealing nut (6). A first electronic valve (7) is provided on each second connecting pipe (14) and the first connecting pipe (12).

2. The airtightness tester with a built-in pressure stabilizing gas tank according to claim 1, characterized in that: The bottom surface of the rear end of the airtightness tester body (1) is provided with a limiting groove (9) that matches the number of pressure stabilizing gas tank bodies (5). A rear fixing ring (10) is fixed at the bottom of the rear end of the airtightness tester body (1). A front fixing ring (11) is fixed at the bottom of the rear end of the airtightness tester body (1) by bolts.

3. The airtightness tester with a built-in pressure stabilizing gas tank according to claim 1, characterized in that: A second electronic valve (8) is provided in the middle of the gas pipeline (3). The second electronic valve (8) is located between the gas inlet pipe (2) and the pressure stabilizing gas tank body (5) in the middle.

4. The airtightness tester with a built-in pressure stabilizing gas tank according to claim 1, characterized in that: The end of the first connecting tube (12) near the second connecting tube (14) is fitted with the second connecting tube (14), and a sealing rubber is provided at the fitting point between the second connecting tube (14) and the first connecting tube (12).

5. The airtightness tester with a built-in pressure stabilizing gas tank according to claim 2, characterized in that: Each pressure stabilizing gas tank body (5) has a limit block (13) at both ends above it. One limit block (13) is fixedly connected to the air tightness tester body (1), and the other limit block (13) is fixedly connected to the baffle (15).

6. The airtightness tester with a built-in pressure stabilizing gas tank according to claim 2, characterized in that: The rear fixing ring (10) and the front fixing ring (11) are both semi-circular rings, and the radii of the rear fixing ring (10) and the front fixing ring (11) are the same as the outer radius of the pressure stabilizing gas tank body (5).

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