Novel single coil pipe leakage test tool

Abstract

The utility model relates to the technical field of coil pipe testing tools, in particular to a novel single coil pipe leakage testing tool which comprises a connecting pipe, a coil pipe connector is installed outside one end of the connecting pipe, an inflation connector is installed outside the other end of the connecting pipe, and one end, close to the coil pipe connector, of the connecting pipe is connected with a leakage testing pipe. A plurality of sealing washers are installed outside the leakage testing pipe, and each sealing washer is of a cylindrical air bag structure with the interior inflated. According to the novel leakage testing tool for the single coil pipe, the coil pipe joint in the tool adopts a threaded connection mode, and a plurality of sealing washers which are internally inflated are arranged outside the leakage testing pipe and can be tightly attached to the outer wall of the coil pipe after being inflated to form an effective sealing layer, so that the leakage problem possibly occurring in the leakage testing process is effectively prevented, the accuracy of a leakage testing result is ensured, and the leakage testing efficiency is improved. And the coil pipes with different inner wall thicknesses can be sealed, and the sealing performance of the joint is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of coil testing tools, in particular to a novel single coil leak testing tool. Background Art

[0002] In industrial production, coils are an important heat transfer element and are widely used in various heat exchange equipment and fluid delivery systems. However, various defects such as cracks and holes that may occur during the production, transportation and use of coils will directly affect the performance and service life of the coils. Therefore, strict leak testing of coils is a key link to ensure their quality and safety.

[0003] Traditional coil leak test tools mostly use mechanical fastening methods such as clamps or clamps. Although they can achieve the fastening and sealing of coils to a certain extent, they have many shortcomings. For example, the application range of clamps or clamps is limited and it is difficult to adapt to coils of different thicknesses; at the same time, the mechanical fastening method is not ideal for the sealing effect of coils, which is easy to cause leakage during the leak test, thus affecting the accuracy and reliability of the leak test.

[0004] In addition, the traditional coil leak test tooling usually requires a lot of manpower and time to install and disassemble, and the operation is cumbersome and inefficient. Especially when a large number of coils are tested for leaks continuously, this operation method greatly reduces the overall efficiency of the leak test work. Utility Model Content

[0005] The purpose of the utility model is to provide a novel single coil leak test tool to solve the problem that the clamps or clamps proposed in the above background technology have limited application range and are difficult to adapt to coils of different thicknesses and sizes; at the same time, the mechanical fastening method has an unsatisfactory sealing effect on the coil, which is prone to leakage during the leak test, thereby affecting the accuracy and reliability of the leak test.

[0006] To achieve the above-mentioned purpose, the utility model provides a new type of single coil leak testing tool, including a connecting pipe, a coil joint is installed on the outside of one end of the connecting pipe, an inflation joint is installed on the outside of the other end of the connecting pipe, a leak testing tube is connected to the end of the connecting pipe close to the coil joint, a plurality of sealing gaskets are installed on the outside of the leak testing tube, the sealing gasket is a cylindrical airbag structure with air inflated inside, a first air outlet is provided on the outer wall of the leak testing tube close to the sealing gasket, the first air outlet is connected to the inflation port of the sealing gasket, and a second air outlet is provided at the end of the leak testing tube.

[0007] Preferably, the coil joint is an annular structure, and one end of the coil joint is integrally formed with a threaded interface, which is threadedly connected to the coil end.

[0008] Preferably, the inner wall of the coil joint is provided with a first internal thread, and one end of the connecting pipe close to the coil joint is provided with a first external thread, and the first internal thread is threadably connected to the first external thread.

[0009] Preferably, a first handle is vertically mounted on the bottom outer wall of the coil joint, and a plurality of anti-slip grooves are arranged on the outer wall of the first handle.

[0010] Preferably, the inflation connector is an annular structure, and one end of the inflation connector is integrally provided with a high-pressure air pump connector, and the high-pressure air pump connector is connected to the output end of the high-pressure air pump.

[0011] Preferably, the inner wall of the inflation joint is provided with a second internal thread, and the end of the connecting pipe close to the inflation joint is provided with a second external thread, and the second internal thread is threadably connected to the second external thread.

[0012] Preferably, a second handle is vertically mounted on the outer wall of the inflation joint, and a plurality of anti-slip grooves are provided on the outer wall of the second handle.

[0013] Preferably, the number of the sealing gaskets is 3 or more, and they are closely arranged in sequence.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In this new single coil leak test tool, the coil joints in the tool are connected by threads, and multiple internally inflated sealing gaskets installed on the outside of the leak test tube can fit tightly against the outer wall of the coil after inflation to form an effective sealing layer, which effectively prevents leakage problems that may occur during the leak test and ensures the accuracy of the leak test results. It can also seal coils with different inner wall thicknesses to ensure the sealing of the joints.

[0016] The tooling realizes the rapid installation and removal of the coil by means of threaded connection and inflatable sealing, which greatly saves manpower and time costs and improves the overall efficiency of the leak test. This advantage is particularly obvious when a large number of coils are tested for leaks continuously. The tooling design is concise and clear, and the coils can be tightened, sealed and leak tested through simple operations. There is no need for complicated steps and tools, which reduces the difficulty of operation and makes it easy for non-professionals to get started. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the middle coil pipe joint of the utility model;

[0019] Figure 3It is a structural schematic diagram of the inflatable joint in the utility model;

[0020] Figure 4 It is a partial structural schematic diagram of the utility model.

[0021] The meaning of each number in the figure is:

[0022] 1. Connecting pipe; 11. First external thread; 12. Second external thread; 2. Coil joint; 21. First handle; 22. Threaded interface; 23. First internal thread; 3. Inflating joint; 31. Second handle; 32. High-pressure air pump joint; 33. Second internal thread; 4. Leak test tube; 41. First air outlet; 42. Second air outlet; 5. Sealing gasket. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides a novel single coil leak test tool, such as Figure 1-Figure 4 As shown, it includes a connecting tube 1, a coil joint 2 is installed on the outside of one end of the connecting tube 1, an inflation joint 3 is installed on the outside of the other end of the connecting tube 1, and a leak test tube 4 is connected to the end of the connecting tube 1 close to the coil joint 2. High-pressure gas is passed into the leak test tube 4 through an external air pump and then enters the entire coil to detect the air tightness of the coil. A plurality of sealing gaskets 5 are installed on the outside of the leak test tube 4. The sealing gasket 5 is a cylindrical airbag structure with air inside. After inflation, it can seal the inner wall at the end of the coil to ensure the sealing of the joint. A first air outlet 41 is provided on the outer wall of the leak test tube 4 close to the sealing gasket 5 for inflating the sealing gasket 5. The first air outlet 41 is connected to the inflation port of the sealing gasket 5. A second air outlet 42 is provided at the end of the leak test tube 4 for inflating the inside of the coil.

[0025] In this embodiment, the coil joint 2 is an annular structure, and one end of the coil joint 2 is integrally formed with a threaded interface 22, which is threadedly connected to the end of the coil to facilitate the connection between the connecting pipe 1 and the coil.

[0026] Specifically, the inner wall of the coil joint 2 is provided with a first internal thread 23, and the end of the connecting pipe 1 close to the coil joint 2 is provided with a first external thread 11. The first internal thread 23 is threadedly connected with the first external thread 11 to facilitate the connection and fixation of the coil joint 2 and the connecting pipe 1.

[0027] Furthermore, a first handle 21 is vertically mounted on the bottom outer wall of the coil joint 2, and a plurality of anti-skid grooves are arranged on the outer wall of the first handle 21, so as to facilitate manual rotation of the coil joint 2 and achieve a good anti-skid effect.

[0028] Furthermore, the inflation connector 3 is an annular structure, and one end of the inflation connector 3 is integrally formed with a high-pressure air pump connector 32, which is connected to the output end of the high-pressure air pump to facilitate the connection of the inflation pump.

[0029] Furthermore, the inner wall of the inflation connector 3 is provided with a second internal thread 33, and the end of the connecting pipe 1 close to the inflation connector 3 is provided with a second external thread 12, and the second internal thread 33 is threadedly connected with the second external thread 12 to facilitate the connection and fixation of the inflation connector and the connecting pipe 1.

[0030] Furthermore, a second handle 31 is vertically mounted on the outer wall of the inflation joint 3 , and a plurality of anti-slip grooves are arranged on the outer wall of the second handle 31 so that the second handle 31 will not loosen when held by the hand.

[0031] Furthermore, the number of sealing gaskets 5 is more than 3, which are closely arranged in sequence to ensure sufficient sealing.

[0032] When the new single coil leak test tool of the utility model is used, firstly, the threaded interface 22 of the coil joint 2 is threadedly connected with the end of the coil to be tested for leaks. Since the coil joint 2 is an annular structure and one end thereof is provided with a threaded interface 22, it can be easily matched with the coil end and tightened. Next, the first external thread 11 of the end of the connecting pipe 1 close to the coil joint 2 is threadedly connected with the first internal thread 23 of the coil joint 2 to fix the connecting pipe 1 and the coil joint 2. Then, the second internal thread 33 of the inflation joint 3 is threadedly connected with the second external thread 12 at the other end of the connecting pipe 1 to ensure that the inflation joint 3 is firmly installed on the connecting pipe 1.

[0033] Use an external air pump to connect to the high-pressure air pump connector 32, start the air pump, and inflate the inside of the leak test tube 4 through the inflation connector 3. Since the outer wall of the leak test tube 4 is provided with a first air outlet 41, which is connected to the inflation port of the sealing gasket 5, the high-pressure gas will enter the sealing gasket 5, causing it to expand and fit tightly to the inner wall of the coil to form an effective seal. The number of sealing gaskets 5 is more than 3, which are arranged closely in sequence to ensure that the inner wall at the end of the coil is fully sealed to prevent leakage during the leak test.

[0034] When the sealing gasket 5 is fully inflated and fits tightly against the inner wall of the coil, continue to inflate the second gas outlet 42 at the end of the leak test tube 4 through the inflation joint 3 to allow high-pressure gas to enter the coil. Observe whether there is gas leakage in the coil and its joints. If there is leakage, it indicates that the coil is defective and needs to be repaired or replaced; if there is no leakage, it indicates that the air tightness of the coil is good and meets the quality requirements.

[0035] After the leak test is completed, turn off the air pump and disconnect the air pump from the high-pressure air pump connector 32. Rotate the first handle 21 and the second handle 31 to remove the coil connector 2 and the inflation connector 3, respectively, and then remove the connecting pipe 1 and the leak test pipe 4. Clean the leak test tooling and prepare for the next leak test operation.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel single coil leak test tool, comprising a connecting pipe (1), characterized in that: A coil joint (2) is installed on the outside of one end of the connecting tube (1), and an inflation joint (3) is installed on the outside of the other end of the connecting tube (1). The end of the connecting tube (1) close to the coil joint (2) is connected to a leak test tube (4), and a plurality of sealing gaskets (5) are installed on the outside of the leak test tube (4). The sealing gasket (5) is a cylindrical airbag structure with air inflated inside. A first air outlet (41) is provided on the outer wall of the leak test tube (4) close to the sealing gasket (5), and the first air outlet (41) is connected to the inflation port of the sealing gasket (5). A second air outlet (42) is provided at the end of the leak test tube (4).

2. The novel single coil leak test tool according to claim 1 is characterized by: The coil joint (2) is an annular structure, and one end of the coil joint (2) is integrally formed with a threaded interface (22), the threaded interface (22) being threadedly connected to the end of the coil.

3. The novel single coil leak test tool according to claim 2 is characterized in that: The inner wall of the coil joint (2) is provided with a first internal thread (23), and one end of the connecting pipe (1) close to the coil joint (2) is provided with a first external thread (11), and the first internal thread (23) is threadedly connected to the first external thread (11).

4. The novel single coil leak test tool according to claim 2 is characterized by: A first handle (21) is vertically mounted on the bottom outer wall of the coil joint (2), and a plurality of anti-slip grooves are provided on the outer wall of the first handle (21).

5. The novel single coil leak test tool according to claim 1 is characterized in that: The inflation connector (3) is an annular structure, and one end of the inflation connector (3) is integrally provided with a high-pressure air pump connector (32), and the high-pressure air pump connector (32) is connected to the output end of the high-pressure air pump.

6. The novel single coil leak test tool according to claim 5 is characterized by: The inner wall of the inflation joint (3) is provided with a second internal thread (33), and the end of the connecting pipe (1) close to the inflation joint (3) is provided with a second external thread (12), and the second internal thread (33) is threadedly connected to the second external thread (12).

7. The novel single coil leak test tool according to claim 6 is characterized by: A second handle (31) is vertically mounted on the outer wall of the inflation joint (3), and a plurality of anti-slip grooves are provided on the outer wall of the second handle (31).

8. The novel single coil leak test tool according to claim 1 is characterized by: The number of the sealing gaskets (5) is more than 3, and they are arranged closely in sequence.

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