Low-temperature pump pipe body leakage detection device

Abstract

The utility model relates to the technical field of pipe body detection, in particular to a low-temperature pump pipe body leakage detection device, which comprises a shell, a pressurizing assembly arranged on one side of the shell, two connecting shells arranged on one side of the shell, connecting plates arranged on the two connecting shells, connecting pipes arranged on the two connecting plates through sealing bearings, and a pressure detection assembly arranged on the other side of the shell, outer threads are arranged on the outer sides of one ends of the two connecting pipes, a pipe body assembly is fixed between the two connecting pipes, a containing box is arranged on one side of the shell, vertical projections of the two connecting shells are located in the containing box, and the pipe body assembly is located in the containing box. According to the device, after air in the shell is extruded through the pressurizing assembly, the pressure intensity at the pipe body assembly can be increased, and when air leaks from the pipe body assembly, air on the outer side of the pipe body assembly can enter the containing box, so that most of bubbles and the like can be generated on soapy water in the containing box; therefore, whether the pipe body assembly leaks air or not can be quickly judged.

Description

Technical Field

[0001] This utility model relates to the field of pipe testing technology, and in particular to a leak detection device for cryogenic pump pipes. Background Technology

[0002] The current method for leak detection in cryogenic pump connecting pipes is the water filling method. This involves stopping the cryogenic pump, disassembling the connecting pipes, filling them with water until the inlets are full, letting them stand for a period of time, and then checking which pipe has the lowest water level to identify the leak. However, since cryogenic pump pipes need to be replaced after damage, and the replacement pipes also require testing, the water filling method is inefficient. It requires a long standing period (at least 30 minutes) to locate the leak, hindering rapid repair of the cryogenic pump pipes. Utility Model Content

[0003] The purpose of this invention is to solve the problems in the existing technology where the pipe body of a cryogenic pump needs to be replaced after damage, the replacement pipe body is inefficiently replaced by filling with water, and the leakage can only be detected after a long period of standing. Therefore, a cryogenic pump pipe body leak detection device is proposed.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A cryogenic pump tube leak detection device is designed, comprising a housing, a pressurizing component on one side of the housing, two connecting shells on one side of the housing, a connecting plate on each of the two connecting shells, a connecting pipe on each of the two connecting plates via a sealed bearing, an external thread on one end of each of the two connecting pipes, a tube assembly fixed between the two connecting pipes, and a placement box on one side of the housing, with the vertical projections of the two connecting shells located within the placement box, and the tube assembly located within the placement box.

[0006] Preferably, one side of the placement box is inclined, and the top edge of the placement box is arc-shaped.

[0007] Preferably, a limiting block is provided on the outer side of both connecting pipes, and there is a gap between the limiting block on both connecting pipes and the external thread.

[0008] Preferably, each of the two connecting pipes has a placement groove at one end, and a sealing ring is provided in each of the two placement grooves.

[0009] Preferably, both ends of the tube assembly are provided with sealing gaskets, and one side of each of the two sealing gaskets is in contact with one side of each of the two sealing rings.

[0010] Preferably, the pressurizing assembly includes a piston plate slidably disposed within the housing, a telescopic assembly is disposed on one side of the piston plate, a fixing plate is disposed on one side of the telescopic assembly, and the fixing plate is fixed within the housing.

[0011] Preferably, the inner wall of the housing is provided with a wear-resistant coating.

[0012] Preferably, the bottom of the placement box is aligned with the bottom of the housing.

[0013] The present invention provides a cryogenic pump tube leak detection device, which has the following advantages: the device compresses the air inside the housing using a pressurizing component, causing the pressure at the tube assembly to rise. When there is a leak in the tube assembly, the gas outside the tube assembly will enter the placement box, causing numerous bubbles to form on the soapy water inside the placement box. This allows for a quick determination of whether there is a leak in the tube assembly, thereby reducing the time required for repairing the cryogenic pump tubes. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a low-temperature pump tube leak detection device proposed in this utility model.

[0015] Figure 2 This is a front view of a cross-sectional view of a cryogenic pump pipe leak detection device proposed in this utility model. Figure 1 .

[0016] Figure 3 for Figure 2 A magnified view of a portion at point A.

[0017] Figure 4 This is a front view of a cross-sectional view of a cryogenic pump pipe leak detection device proposed in this utility model. Figure 2 .

[0018] Figure 5 for Figure 4 A magnified view of a section at point B.

[0019] In the diagram: 1. Shell; 2. Connecting shell; 3. Connecting plate; 4. Connecting pipe; 5. External thread; 6. Pipe assembly; 7. Placement box; 8. Limiting block; 9. Placement groove; 10. Sealing ring; 11. Sealing gasket; 12. Piston plate; 13. Telescopic assembly; 14. Fixing plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example 1: Refer to Figure 1-5 A cryogenic pump pipe leak detection device includes a housing 1. A pressurizing assembly is provided on one side of the housing 1. The pressurizing assembly includes a piston plate 12 slidably disposed within the housing 1. A telescopic assembly 13 is provided on one side of the piston plate 12. A fixing plate 14 is provided on one side of the telescopic assembly 13. The fixing plate 14 is fixed inside the housing 1. Two connecting shells 2 are provided on one side of the housing 1. Each connecting shell 2 is provided with a connecting plate 3. Each connecting plate 3 is provided with a connecting pipe 4 through a sealed bearing. An external thread 5 is provided on the outer side of one end of each connecting pipe 4. A pipe assembly 6 is fixed between the two connecting pipes 4. A placement box 7 is provided on one side of the housing 1. The vertical projections of the two connecting shells 2 are located within the placement box 7. The pipe assembly 6 is located within the placement box 7. The inner wall of the housing 1 is provided with a wear-resistant coating, which is formed by nitriding treatment. This makes the device less prone to damage even after prolonged friction between the housing 1 and the piston plate 12. The bottom of the placement box 7 is aligned with the bottom of the housing 1, making the device less prone to tipping over after soapy water is added to the placement box 7, thus making the device more stable.

[0022] After connecting the two ends of the tube assembly 6 to be replaced to the external threads 5 on the outside of the two connecting pipes 4 using a torque wrench, add soapy water to the placement box 7, covering the tube assembly 6 and the two connecting pipes 4. After skimming off the foam on top of the soapy water, activate the telescopic component 13. The output end of the telescopic component 13 will bring the piston plate 12 into one end of the housing 1, compressing the air in the housing 1, the two connecting pipes 4, and the tube assembly 6. This pressurizes the air inside the tube assembly 6, so that if there is a leak in the tube assembly 6, the gas outside the tube assembly 6 will enter the soapy water inside the placement box 7, causing numerous bubbles to form on the surface of the soapy water inside the placement box 7. This allows for a quick determination of whether there is a leak in the tube assembly 6, thereby reducing the time required for repairing the cryogenic pump tubes and improving the efficiency of replacing cryogenic pump tubes.

[0023] Example 2: In this example, during the process of connecting the tube assembly 6 to the connecting tube 4, the tool used to align the tube assembly 6 with the placement box 7 causes significant interference, and air leakage is also prone to occur at the connection between the tube assembly 6 and the connecting tube 4. Based on Example 1, optimizations are made, referencing... Figure 1-5 The placement box 7 is tilted on one side, and the top edge of the placement box 7 is arc-shaped. Limiting blocks 8 are provided on the outer sides of the two connecting pipes 4. There is a gap between the limiting blocks 8 on the two connecting pipes 4 and the external thread 5. A placement groove 9 is provided at one end of the two connecting pipes 4. A sealing ring 10 is provided in the two placement grooves 9. A sealing gasket 11 is provided at both ends of the pipe body assembly 6. One side of the two sealing gaskets 11 is in contact with one side of the two sealing rings 10.

[0024] By setting the placement 7 side to be tilted, the torque wrench has more room to rotate during the connection of the connecting pipe 4 and the pipe body assembly 6, making the connection between the pipe body assembly 6 and the connecting pipe 4 tighter. This reduces the chance of air leakage at the connection between the pipe body assembly 6 and the connecting pipe 4. By setting one side of each of the two sealing gaskets 11 to contact one side of each of the two sealing rings 10, the chance of air leakage at the connection between the pipe body assembly 6 and the connecting pipe 4 is further reduced.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cryogenic pump pipe leak detection device, comprising a housing (1), characterized in that, A pressurizing component is provided on one side of the housing (1), and two connecting shells (2) are provided on one side of the housing (1). Each of the two connecting shells (2) is provided with a connecting plate (3), and each of the two connecting plates (3) is provided with a connecting pipe (4) through a sealed bearing. Each of the two connecting pipes (4) is provided with an external thread (5) on the outer side of one end. A placement box (7) is provided on one side of the housing (1).

2. The cryogenic pump pipe leak detection device according to claim 1, characterized in that, The placement box (7) is inclined on one side, and the top edge of the placement box (7) is arc-shaped.

3. The cryogenic pump pipe leak detection device according to claim 1, characterized in that, Limiting blocks (8) are provided on the outer side of both connecting pipes (4), and there is a gap between the limiting blocks (8) on both connecting pipes (4) and the external thread (5).

4. The cryogenic pump pipe leak detection device according to any one of claims 1-3, characterized in that, Each of the two connecting pipes (4) has a placement groove (9) at one end, and a sealing ring (10) is provided in each of the two placement grooves (9).

5. The cryogenic pump pipe leak detection device according to claim 1, characterized in that, The pressurizing assembly includes a piston plate (12) that is slidably disposed in the housing (1). A telescopic assembly (13) is provided on one side of the piston plate (12), and a fixing plate (14) is provided on one side of the telescopic assembly (13). The fixing plate (14) is fixed in the housing (1).

6. The cryogenic pump pipe leak detection device according to claim 5, characterized in that, The inner wall of the housing (1) is provided with a wear-resistant coating.

7. The cryogenic pump pipe leak detection device according to claim 1, characterized in that, The bottom of the placement box (7) is aligned with the bottom of the shell (1).

Images