Pressure test plug for heat dissipation water tank

Abstract

A heat dissipation water tank pressure test plug comprises a main body pipe and an expansion mechanism on the outer ring of the main body pipe. The expansion mechanism comprises a fixed circular plate fixed to the outer ring of one end of the main body pipe and a movable circular plate movably arranged on the outer ring of the other end of the main body pipe in a sleeving mode, and the outer ring of the main body pipe between the movable circular plate and the fixed circular plate is sleeved with an expansion ring. The expansion mechanism further comprises a pre-tightening nut spirally arranged on the main body pipe and located on the side, away from the expansion ring, of the movable circular plate, the expansion ring is arranged to be capable of expanding outwards under the extrusion action of the movable circular plate and the fixed circular plate, and when a sealing performance test is conducted, the pressure test plug only needs to be arranged in the water inlet of the water tank, and the pre-tightening nut is rotated, so that the sealing performance of the water tank is tested. The pressure applying plug can be clamped and fixed to the water tank through the expansion effect of the expansion ring, meanwhile, the connecting tightness between the pressure applying plug and the water tank is guaranteed, the connecting structure is simpler, use can be more convenient, and meanwhile it is guaranteed that the pressure applying plug can have a wider application range.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing test devices, specifically a pressure test sealing method for a radiator. Background Technology

[0002] Radiator tanks are commonly used cooling components in motor vehicles. To ensure their proper functioning, they typically undergo a pressure test before leaving the factory, which is a leak test to check their sealing performance. Common testing methods include sealing the outlet and injecting gas at a preset pressure into the inlet, monitoring changes in gas pressure within the tank, or immersing the entire tank in water and observing for air bubbles around the tank to determine its sealing performance. To ensure the accuracy of leak test data, the air supply pipe must be sealed to the tank. However, existing connectors are often designed specifically for certain tank specifications, resulting in low applicability and complex connection structures and usage methods, hindering rapid testing of the tank's sealing performance. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model provides a pressure test sealing method for a heat dissipation water tank.

[0004] The technical solution of this utility model is as follows:

[0005] A pressure test sealing method for a radiator includes a main tube and an expansion mechanism around its outer ring. The main tube can be snapped and fixed inside the water inlet of the water tank under the action of the expansion mechanism. Through the connection between the main tube and the air supply pipe, pressurized gas can be delivered into the water tank. The expansion mechanism ensures a tight connection between the pressure test sealing method and the water tank, ultimately achieving a water tank sealing test.

[0006] As the core technical concept of this utility model, the expansion mechanism includes a fixed circular plate fixed to the outer ring of one end of the main tube, and a movable circular plate movably sleeved on the outer ring of the other end of the main tube. An expansion ring is sleeved on the outer ring of the main tube between the movable circular plate and the fixed circular plate. The expansion mechanism also includes a pre-tightening nut spirally arranged on the main tube, located on the side of the movable circular plate away from the expansion ring. The expansion ring is designed to expand outward under the squeezing action of the movable circular plate and the fixed circular plate. Based on the above structure, when conducting a sealing test, it is only necessary to place the pressure test plug inside the water inlet of the water tank. By rotating the pre-tightening nut, the movable circular plate and the fixed circular plate can be pushed inward to squeeze the expansion ring. That is, the pressure test plug can be fixed to the water tank under the expansion action of the expansion ring, while ensuring the tightness of the connection between the pressure test plug and the water tank. The connection structure is simpler and more convenient to use. Moreover, since the connection between the pressure test plug and the water tank is achieved by the expansion action of the expansion ring, the pressure test plug has a wider range of applications.

[0007] As described above, in a preferred embodiment of the pressure test sealing of a radiator, when the pressure test sealing is placed into the water inlet of the water tank, the expansion ring can be used to achieve pre-tightening between the pressure test sealing and the water inlet, so as to better lock it into the water inlet under the action of the pre-tightening nut. The outer diameters of the fixed circular plate and the movable circular plate are both smaller than the outer diameter of the expansion ring.

[0008] As a further preferred embodiment, in order to ensure that the expansion ring can expand outward to a large extent under pressure, the expansion ring is configured as a cylindrical structure.

[0009] In the pressure test sealing of the heat dissipation tank as described above, in order to ensure that the rotation of the pre-tightening nut can better push the movable circular plate and the fixed circular plate to clamp the expansion ring, an annular gasket is also provided between the pre-tightening nut and the movable circular plate.

[0010] In the aforementioned pressure test sealing of a radiator, a handle is attached to the outside of the pre-tightening nut to make it easier to rotate.

[0011] To further ensure the convenience of turning the preload nut by the handle, two handles are provided on both sides of the preload nut.

[0012] Specifically, regarding the structure of the handle, to prevent interference with other structures of the pressure test seal when the handle is turned, one end of the handle is connected to the preload nut, and the other end is tilted outward toward the side of the preload nut away from the movable circular plate.

[0013] As described above, in order to facilitate the disassembly or connection between the heat dissipation tank and the air supply pipe, the end of the main tube near the pre-tightening bolt is also connected to a plug that can be plugged into the air supply pipe.

[0014] The beneficial effects of this utility model are as follows: This utility model is a pressure test plug for a heat dissipation water tank. When conducting a sealing test, the pressure test plug only needs to be placed inside the water inlet of the water tank. By rotating the pre-tightening nut, the movable circular plate and the fixed circular plate can be pushed inward to compress the expansion ring. That is, the pressure test plug can be fixed to the water tank under the expansion of the expansion ring, while ensuring the tightness of the connection between the pressure test plug and the water tank. The connection structure is simpler and more convenient to use. Moreover, since the connection between the pressure test plug and the water tank is achieved by the expansion of the expansion ring, the pressure test plug has a wider range of applications. Attached Figure Description

[0015] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the pressure sealing structure in the embodiment;

[0018] Figure 2 This is a front view of the pressure sealing process in the embodiment;

[0019] Figure 3 This is a schematic diagram of the internal structure of the pressure sealing system in the embodiment;

[0020] The components represented by the various reference numerals in the diagram are:

[0021] 1. Main tube; 2. Expansion mechanism; 21. Fixed circular plate; 22. Movable circular plate; 23. Expansion ring; 24. Preload nut; 25. Washer; 26. Handle; 3. Connector. Detailed Implementation

[0022] Exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings.

[0023] Example

[0024] This embodiment provides a pressure test sealing method for a heat dissipation tank. (See [link]) Figure 1 It includes a main tube 1 and an expansion mechanism 2 around its outer ring. The main tube 1 can be snapped and fixed in the water inlet of the water tank under the action of the expansion mechanism 2. Through the connection between the main tube 1 and the air supply pipe, pressurized gas can be delivered into the water tank. And through the action of the expansion mechanism 2, the connection between the pressure test seal (the above-mentioned pressure test seal for a radiator water tank) and the water tank is ensured to be tight, and finally the water tank's sealing performance is tested. The structure of the pressure test seal will be described in detail below with reference to the attached drawings.

[0025] In this embodiment, combined with Figure 2 and Figure 3 As the core technical concept of this utility model, the expansion mechanism 2 includes a fixed circular plate 21 fixed to the outer ring of one end of the main tube 1, and a movable circular plate 22 movably sleeved on the outer ring of the other end of the main tube 1. The movable circular plate 22 has a through hole in the middle, and the main tube 1 passes through the movable circular plate 22. An expansion ring 23 is sleeved on the outer ring of the main tube 1 between the movable circular plate 22 and the fixed circular plate 21. The expansion ring 23 is made of silicone rubber. The expansion mechanism 2 also includes a pre-tightening nut 24 spirally arranged on the main tube 1, which is located on the side of the movable circular plate 22 away from the expansion ring 23. The expansion ring 23 is configured to expand outward under the squeezing action of the movable circular plate 22 and the fixed circular plate 21.

[0026] Based on the above structure, when conducting a sealing test, the pressure test plug only needs to be placed inside the water inlet of the water tank. By rotating the pre-tightening nut 24, the movable circular plate 22 and the fixed circular plate 21 can be pushed inward to compress the expansion ring 23. Thus, the pressure test plug can be fixed to the water tank under the expansion of the expansion ring 23, while ensuring the tightness of the connection between the pressure test plug and the water tank. The connection structure is simpler and more convenient to use. Moreover, since the connection between the pressure test plug and the water tank is achieved through the expansion of the expansion ring 23, the pressure test plug has a wider range of applications.

[0027] In a preferred embodiment, when the pressure test plug is placed into the water tank inlet, the expansion ring 23 can be fitted with the inlet to achieve pre-tightening between the pressure test plug and the inlet, thereby better securing it to the inlet under the action of the pre-tightening nut 24. This prevents the fixed circular plate 21 or the movable circular plate 22 from contacting the inner wall of the inlet when the pressure test plug is placed into the water tank inlet. The outer diameters of the fixed circular plate 21 and the movable circular plate 22 are both smaller than the outer diameter of the expansion ring 23.

[0028] As a further preferred embodiment, in order to ensure that the expansion ring 23 can expand outward to a greater extent under pressure, the expansion ring 23 is configured as a cylindrical structure, and the inner ring is in contact with the outer wall of the main tube 1.

[0029] Preferably, in order to ensure that the rotation of the preload nut 24 can better push the movable circular plate 22 and the fixed circular plate 21 to clamp the expansion ring 23, an annular washer 25 is also provided between the preload nut 24 and the movable circular plate 22.

[0030] In this embodiment, in order to make the preload nut 24 easier to rotate, a handle 26 is also connected to the outside of the preload nut 24.

[0031] As a preferred embodiment, to further ensure the convenience of rotating the preload nut 24 via the handle 26, two handles 26 are provided on both sides of the preload nut 24.

[0032] As a further preferred embodiment, specifically regarding the structure of the handle 26, to prevent interference with other structures of the pressure test sealing when the handle 26 is rotated, the handle 26 is configured as a rod-shaped structure, with one end connected to the pre-tightening nut 24, and the other end facing the side of the pre-tightening nut 24 away from the movable circular plate 22 and inclined outward. That is, the two handles 26 are arranged in a figure-eight shape, and the opening of the figure-eight shape faces the side of the pre-tightening nut 24 away from the movable circular plate 22. The ends of the two handles 26 that are close to each other are respectively connected to the two sides of the pre-tightening nut 24, and the two handles 26 and the main body tube 1 are located in the same plane.

[0033] In this embodiment, to facilitate disassembly or connection between the main body tube 1 and the gas supply pipe, a plug connector 3 that can be plugged into the gas supply pipe is also connected to one end of the main body tube 1 near the pre-tightening bolt.

Claims

1. A pressure test sealing method for a heat dissipation water tank, characterized in that, Includes the main tube (1) and its outer ring expansion mechanism (2); The expansion mechanism (2) includes a fixed circular plate (21) fixed to the outer ring of one end of the main tube (1) and a movable circular plate (22) movably sleeved on the outer ring of the other end of the main tube (1). An expansion ring (23) is sleeved on the outer ring of the main tube (1) between the movable circular plate (22) and the fixed circular plate (21). The expansion mechanism (2) also includes a preload nut (24) spirally disposed on the main tube (1), which is located on the side of the movable circular plate (22) away from the expansion ring (23). The expansion ring (23) is configured to expand outward under the squeezing action of the movable circular plate (22) and the fixed circular plate (21).

2. The pressure test sealing method for a heat dissipation water tank according to claim 1, characterized in that, The outer diameters of both the fixed circular plate (21) and the movable circular plate (22) are smaller than the outer diameter of the expansion ring (23).

3. The pressure test sealing method for a heat dissipation water tank according to claim 1, characterized in that, The expansion ring (23) has a cylindrical structure.

4. The pressure test sealing method for a heat dissipation water tank according to claim 1, characterized in that, An annular washer (25) is also provided between the preload nut (24) and the movable circular plate (22).

5. The pressure test sealing method for a heat dissipation water tank according to claim 1, characterized in that, A handle (26) is also connected to the outside of the preload nut (24).

6. The pressure test sealing method for a heat dissipation water tank according to claim 5, characterized in that, Two handles (26) are located on both sides of the preload nut (24).

7. The pressure test sealing method for a heat dissipation water tank according to claim 5, characterized in that, One end of the handle (26) is connected to the preload nut (24), and the other end is inclined outward toward the side of the preload nut (24) away from the movable circular plate (22).

8. The pressure test sealing method for a heat dissipation water tank according to claim 1, characterized in that, The main tube (1) is also connected to a plug (3) at one end near the pre-tightening bolt, which can be plugged into the air supply pipe.

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