Air tightness detection device

Abstract

The utility model relates to an air tightness detection device, and relates to the technical field of air tightness detection, the air tightness detection device comprises a base and a plugging structure, the plugging structure comprises a plugging rod arranged on the base in a sliding manner and used for plugging one end of a bent pipe, and the plugging structure further comprises a plugging sheet used for plugging the other end of the bent pipe; one end of the plugging rod is matched with one end of the bent pipe in an abutting mode, the plugging piece is fixedly connected with the other end of the bent pipe, an air inlet mechanism used for air inlet of the bent pipe is further arranged on the base, and a fixing structure used for fixing the bent pipe is further arranged on the base. According to the device, the convenient operation that the two ends of the bent pipe are plugged and fixed at the same time is achieved, the efficiency and reliability of air tightness detection of the bent pipe are effectively improved, the accuracy and speed of detection are further improved, it is guaranteed that the bent pipe does not displace in the detection process through the design of the fixing structure, and the safety and stability of detection are enhanced.

Description

Technical Field

[0001] This application relates to the field of airtightness testing technology, and in particular to an airtightness testing device. Background Technology

[0002] Welding is a critical step in the production of bent pipes. To ensure product quality, airtightness testing is typically performed on the bent pipes to confirm their compliance with standards. Airtightness testing is essential for guaranteeing the safety and reliability of bent pipes in use; therefore, improving testing efficiency and accuracy has significant economic and technical implications.

[0003] Currently, the common method for testing the airtightness of bent pipes involves sealing both ends of the bent pipe before testing, leaving an air inlet at one end. The bent pipe is then fixed to a fixture, and air is introduced into it through a vent pipe. The pipe is then placed in a water tank to observe whether air bubbles are generated, thus determining its airtightness. Common sealing methods include manual sealing, using specialized sealing tools, and fixing with fixtures. While manual sealing is simple, it is cumbersome and prone to human error. Specialized sealing tools improve accuracy but still require manual intervention, resulting in low efficiency. Traditional fixtures often use fixed clamping methods, which are unsuitable for bent pipes of different sizes and shapes, offering limited flexibility. Utility Model Content

[0004] To address the problem of airtightness testing of bent pipes in the prior art, this application provides an airtightness testing device.

[0005] This application provides an airtightness testing device, which adopts the following technical solution:

[0006] An airtightness testing device includes a base and a sealing structure. The sealing structure includes a sealing rod slidably mounted on the base for sealing one end of a bent tube, and a sealing plate for sealing the other end of the bent tube. One end of the sealing rod abuts against one end of the bent tube, and the sealing plate is fixedly connected to the other end of the bent tube. The base is also provided with an air intake mechanism for air intake into the bent tube, and a fixing structure for fixing the bent tube.

[0007] By adopting the above technical solution, the convenient operation of simultaneously sealing and fixing both ends of the bent tube is realized, which effectively improves the efficiency and reliability of the airtightness test of the bent tube. The combined design of the sealing rod and sealing plate not only simplifies the sealing process and reduces manual intervention, but also ensures the tightness and stability of the sealing. The setting of the air intake mechanism allows the gas to smoothly enter the bent tube, further improving the accuracy and speed of the test. The design of the fixing structure ensures that the bent tube will not be displaced during the test, enhancing the safety and stability of the test.

[0008] Preferably, the air intake mechanism includes an air intake hole and an air intake channel disposed on the sealing rod. The air intake hole is disposed on the side of the sealing rod, and the air intake channel extends through the air intake hole to the end of the sealing rod near the bent tube.

[0009] By adopting the above technical solution, an air inlet and an air inlet channel are set on the sealing rod. The air inlet is set on the side of the sealing rod and extends to the end of the sealing rod near the bend tube through the air inlet channel. This ensures that the gas can smoothly enter the interior of the bend tube, thereby improving the reliability and accuracy of airtightness testing.

[0010] Preferably, the end of the sealing rod near the bend is provided with a first sealing ring that mates with the bend.

[0011] By adopting the above technical solution, the setting of the first sealing ring can effectively improve the sealing performance between the sealing rod and the bent pipe, reduce the possibility of gas leakage, and ensure the accuracy of the test results.

[0012] Preferably, a pushing cylinder is provided at the end of the sealing rod away from the bend tube, and the piston rod of the pushing cylinder is fixedly connected to the end of the sealing rod away from the bend tube.

[0013] By adopting the above technical solution, the cylinder can automatically drive the sealing rod to slide, realizing the rapid sealing and fixing of the opening at one end of the bent pipe, reducing the complexity of manual operation, and improving the efficiency and accuracy of the airtightness test of the bent pipe.

[0014] Preferably, a support frame for supporting the sealing rod is also fixedly provided on the base, and the sealing rod and the support frame are in sliding fit.

[0015] By adopting the above technical solution, the support frame can effectively support the sealing rod, ensuring that the sealing rod remains stable during sliding, avoiding the problem of poor sealing effect caused by the shaking of the sealing rod, thereby improving the reliability and accuracy of the airtightness test of the bent pipe.

[0016] Preferably, two fixing frames are also vertically arranged opposite each other on the base, and a placement space for placing the bent tube is formed between the two fixing frames, and the fixing structure is located in the placement space.

[0017] By adopting the above technical solution, the placement space between the two fixed frames provides a clear placement area for the bent pipe, enabling operators to quickly and accurately place the bent pipe in place, further improving the testing efficiency.

[0018] Preferably, the fixing structure includes a slot disposed on the base at the end away from the pushing cylinder, the slot engaging with the bent tube.

[0019] By adopting the above technical solution, the bent tube can be quickly and stably fixed on the base, avoiding the tedious operation of manually fixing the bent tube in the traditional method and improving the testing efficiency.

[0020] Preferably, the sealing plate is provided with a second sealing ring that mates with the bent tube.

[0021] By adopting the above technical solution, the sealing plate is equipped with a second sealing ring that matches the bent tube, which can effectively improve the sealing effect at the other end of the bent tube, ensure that no gas leakage occurs during the testing process, and further improve the accuracy and reliability of the test.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The sliding of the sealing rod and the fixed connection of the sealing plate can quickly seal the openings at both ends of the bent pipe, simplifying the traditional manual sealing process and significantly improving the detection efficiency;

[0024] 2. The air intake mechanism, through the air intake hole and air intake channel set on the sealing rod, achieves a stable air supply to the bent pipe, ensuring the accuracy and reliability of the test;

[0025] 3. The design of the fixed structure and the first sealing ring makes the bent tube more secure during the testing process, avoiding testing errors caused by movement or loosening. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0027] Figure 2 This is a cross-sectional view of the overall structure in the embodiments of this application.

[0028] Reference numerals in the attached diagram: 1. Base; 2. Sealing structure; 21. Sealing rod; 22. Sealing plate; 3. Air intake mechanism; 31. Air intake hole; 32. Air intake channel; 4. Fixing structure; 41. Slot; 5. Fixing bracket; 6. Support bracket; 7. Push cylinder. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 -Appendix Figure 2 This application will be described in further detail.

[0030] This application discloses an airtightness testing device.

[0031] Reference Figure 1 and Figure 2An airtightness testing device includes a base 1 and a sealing structure 2. The sealing structure 2 includes a sealing rod 21 slidably mounted on the base 1 for sealing one end of a bent tube, and a sealing piece 22 for sealing the other end of the bent tube. One end of the sealing rod 21 abuts against one end of the bent tube, and the sealing piece 22 is fixedly connected to the other end of the bent tube. The base 1 is also provided with an air intake mechanism 3 for air intake into the bent tube, and a fixing structure 4 for fixing the bent tube. In this way, the bent tube can be quickly and stably sealed and fixed, thereby improving the testing efficiency.

[0032] Reference Figure 1 and Figure 2 The air intake mechanism 3 includes an air intake hole 31 and an air intake channel 32. The air intake hole 31 is located on the side of the sealing rod 21, and the air intake channel 32 extends through the air intake hole 31 to the end of the sealing rod 21 near the bent pipe. The air intake hole 31 is connected to an external air supply device.

[0033] Reference Figure 1 and Figure 2 A push cylinder 7 is fixedly installed at one end of the base 1. One end of the sealing rod 21 is fixedly connected to the piston rod of the push cylinder 7. The other end of the sealing rod 21 forms an abutment fit with one end of the bent tube. A first sealing ring that cooperates with the bent tube is provided at the end of the sealing rod 21 near the bent tube.

[0034] Reference Figure 1 and Figure 2 Two fixed brackets 5 are vertically arranged opposite each other on the base 1, and a placement space for placing the bent tube is formed between the two fixed brackets 5. The fixing structure 4 is located in the placement space. The fixing structure 4 includes a slot 41 set on the base 1 away from the end of the pushing cylinder 7. When the pushing cylinder 7 drives the sealing rod 21 to form an abutment with the bent tube and realizes the sealing of one end of the bent tube, the slot 41 forms a snap-fit ​​with the bent tube and the flange of the bent tube to ensure that the bent tube will not move during the inspection process.

[0035] Reference Figure 1 and Figure 2 A support frame 6 for supporting the sealing rod 21 is fixedly installed on the base 1. The support frame 6 is located in the placement space. The upper end of the sealing rod 21 and the support frame 6 form a sliding fit, which ensures the smooth movement of the sealing rod 21 and can accurately seal the bent pipe.

[0036] Reference Figure 1 and Figure 2 The sealing piece 22 is bonded and fixedly connected to the bent pipe. The sealing piece 22 is provided with a second sealing ring that cooperates with the bent pipe to further enhance the sealing effect. In other embodiments, the connection method between the sealing piece 22 and the bent pipe can preferably be a snap-fit ​​connection.

[0037] Reference Figure 1 and Figure 2 After sealing both ends of the bent pipe, place the entire device and the bent pipe into the water, start the external air supply equipment, and send the high-pressure air source inlet 31 and air inlet channel 32 into the bent pipe to achieve air tightness test. If no air bubbles appear in the water, the air tightness is good.

[0038] The implementation principle of this embodiment is as follows: Through the double sealing of the sealing rod 21 and the sealing plate 22, and the fixation of the fixing structure 4, rapid and stable sealing and fixation of the bent pipe are achieved. The sliding movement of the sealing rod 21 is driven by the push cylinder 7, ensuring the reliability and consistency of the sealing. The design of the air intake mechanism 3 ensures smooth gas flow, improving the accuracy and efficiency of the detection. The overall structure is simple and easy to operate, effectively improving the working efficiency of bent pipe airtightness testing.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An airtightness testing device, characterized in that: The device includes a base (1) and a sealing structure (2). The sealing structure (2) includes a sealing rod (21) that is slidably disposed on the base (1) for sealing one end of the bent pipe. The sealing structure (2) also includes a sealing piece (22) for sealing the other end of the bent pipe. One end of the sealing rod (21) forms an abutment fit with one end of the bent pipe. The sealing piece (22) is fixedly connected to the other end of the bent pipe. The base (1) is also provided with an air intake mechanism (3) for air intake of the bent pipe. The base (1) is also provided with a fixing structure (4) for fixing the bent pipe.

2. The airtightness testing device according to claim 1, characterized in that: The air intake mechanism (3) includes an air intake hole (31) and an air intake channel (32) provided on the sealing rod (21). The air intake hole (31) is provided on the side of the sealing rod (21), and the air intake channel (32) extends through the air intake hole (31) to the end of the sealing rod (21) near the bent tube.

3. The airtightness testing device according to claim 1, characterized in that: The sealing rod (21) has a first sealing ring that mates with the bent tube at one end.

4. The airtightness testing device according to claim 1, characterized in that: The end of the sealing rod (21) away from the bend is provided with a push cylinder (7), and the piston rod of the push cylinder (7) is fixedly connected to the end of the sealing rod (21) away from the bend.

5. The airtightness testing device according to claim 1, characterized in that: The base (1) is also fixedly provided with a support frame (6) for supporting the sealing rod (21), and the sealing rod (21) and the support frame (6) form a sliding fit.

6. The airtightness testing device according to claim 1, characterized in that: Two fixing frames (5) are also vertically arranged opposite each other on the base (1), and a placement space for placing the bent tube is formed between the two fixing frames (5), and the fixing structure (4) is located in the placement space.

7. The airtightness testing device according to claim 6, characterized in that: The fixing structure (4) includes a slot (41) on the base (1) at one end away from the push cylinder (7), and the slot (41) forms a snap-fit ​​with the bent tube.

8. The airtightness testing device according to claim 1, characterized in that: The sealing plate (22) is provided with a second sealing ring that mates with the bent pipe.

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