A multi-station pipe leakage test system

Abstract

The present invention relates to the technical field of pipe body water leakage detection, specifically, to a multi-station pipe body water leakage test system, which includes a fixed pipe and a first sleeve arranged on both sides of the fixed pipe, the first sleeve is provided with a detachable fixed plate, a receiving groove is formed between the fixed plate and the first sleeve, a deformation sealing ring is slidably provided in the receiving groove, an annular temporary storage cavity is opened on the periphery of the fixed plate, an isolation cover is provided on the annular temporary storage cavity, and an L-shaped recovery cavity is formed between the annular temporary storage cavity and the isolation cover; water is injected into the detection cavity and pressurized to form a space for closed detection of the inner wall of the pipe body to be detected, and water leaked from the closed detection space flows back into the L-shaped recovery cavity and is recycled; by arranging the fixed pipe and the sleeve, and forming a detection cavity between the two, the high-pressure water column impacts the inner wall of the pipe body to be detected, and if there is a crack in the pipe body, it will be visible on the outside.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe leakage detection, in particular to a multi-station pipe leakage test system. Background Art

[0002] Pipe leak detection is primarily used to inspect pipes or containers to identify leaks. This device is crucial for ensuring safety, efficiency, and reducing resource waste in various industrial and civil facilities.

[0003] Existing devices for detecting water leaks in pipes often use pressurized water injection into the pipe to see if there is water leakage from the periphery of the pipe, or the pipe is inflated and then placed in a very long pool to see if there are bubbles. In the above situations, a large area is required for detection, and a large amount of water resources are required, which easily leads to waste of water resources and increases the detection cost.

[0004] Based on this, the present invention discloses a multi-station pipe leakage test system. Summary of the Invention

[0005] In order to solve the problem that the pipe leakage detection method proposed in the background technology usually requires a large space and a large amount of water resources, which not only occupies a large area, but also easily causes waste of water resources, thereby increasing the detection cost, the present invention provides a multi-station pipe leakage test system, which includes a fixed pipe and a first sleeve arranged on both sides of the fixed pipe, a mounting ring is fixed on the outer periphery of the first sleeve, and a detection cavity is formed between the two mounting rings. Water is injected into the detection cavity and pressurized to form a space for closed detection of the inner wall of the pipe to be detected.

[0006] Since the closed detection space may leak during the water addition process, in order to save water resources:

[0007] A receiving groove is formed between the fixed plate and the first sleeve, and the receiving groove includes a pressurized chamber formed between the mounting ring and the fixed plate and a water storage chamber formed between the first sleeve and the periphery of the fixed tube, and the water storage chamber and the pressurized chamber are connected. The deformable sealing ring is slidably and disassembled in the pressurized chamber, and a limiting wedge is provided at the top of the mounting ring and the fixed plate in contact with the deformable sealing ring.

[0008] In this solution, due to the step-by-step detection of the tube body, the deformable sealing ring that achieves the sealing effect will be worn. In order to achieve the purpose of easy replacement of the deformable sealing ring, as a further improvement of this technical solution, a mounting tube is fixedly provided at the bottom of the water storage chamber in the first sleeve, and a mounting sleeve is fixedly provided on the fixed plate, and the fixed plate is threadedly connected to the mounting tube through the mounting sleeve.

[0009] On this basis, in order to realize water injection and pressurization of the holding tank and the detection cavity:

[0010] A pressure pipe is fixed in the fixed pipe, and one end of the pressure pipe away from the fixed pipe is connected to the pressure pump. A number of water inlet pipes are circumferentially arranged in the water storage chamber, one end of the water inlet pipe is connected to the water storage chamber, and the other end of the water inlet pipe is connected to the pressure pipe. A number of return pipes are also circumferentially arranged in the water storage chamber, and a pressure valve is arranged in the return pipe. One end of the return pipe is connected to the water storage chamber, and the other end of the return pipe is connected to the detection chamber. After the pressure valve in the return pipe satisfies the deformation sealing ring and the inner wall of the tube to be detected is completely fitted, the water storage chamber is connected to the detection chamber through the return pipe.

[0011] In another solution, water may overflow during the pressurization of the holding tank, that is, during the deformation of the annular seal, and water may also leak during the pressure relief of the holding tank. In order to save water resources, the leaked water is recycled and reused.

[0012] As a further improvement of the present technical solution, an annular temporary storage chamber is opened on the periphery of the fixed plate, an isolation cover is provided on the annular temporary storage chamber, an L-shaped recovery chamber is formed between the annular temporary storage chamber and the isolation cover, the inner diameter of the isolation cover is larger than the outer diameter of the fixed plate, and an annular reflux port is formed on the top of the isolation cover and the fixed plate. The pressurized chamber is connected to the annular temporary storage chamber through the reflux port, and the L-shaped recovery chamber includes a reflux port and an annular temporary storage chamber. A plurality of water pumping pipes are circumferentially arranged on the side of the annular temporary storage chamber away from the fixed pipe, one end of the water pumping pipe is connected to the annular temporary storage chamber, and the other end of the water pumping pipe is connected to the other end of the pressure pump.

[0013] On this basis, in order to further reduce the waste of water resources in the process of water resource recovery, that is, to reduce the risk of water leakage at the contact end between the deformable sealing ring and the return port, and to have a temporary sealing measure after the pressure of the holding tank is relieved;

[0014] As a further improvement of the present technical solution, the isolation cover is provided with a second and a third sealing part at the contact end of the deformable sealing ring, the second sealing part is used to seal the side of the deformable sealing ring away from the first sleeve, and the third sealing part is used to temporarily seal the closed detection space when the groove is depressurized; the second sealing part includes a sealing sleeve arranged on the end of the isolation cover adjacent to the deformable sealing ring, and the sealing sleeve structure is adapted to the deformable sealing ring; the third sealing part is a second sealing ring arranged on the periphery of the isolation cover, the second sealing ring is arranged adjacent to the sealing sleeve, and the second sealing ring is made of a compressible material.

[0015] In another solution, in the process of transferring the entire system, in order to reduce friction and stabilize the entire system;

[0016] As a further improvement of the present technical solution, a mounting plate is fixedly provided on the side of the fixing plate away from the fixing tube, and a plurality of sliding components are circumferentially arranged inside the periphery of the mounting plate. The sliding components include an elastic telescopic rod arranged in the mounting plate, and a ball is rotatably arranged at the top end of the elastic telescopic rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This multi-station pipe leak test system uses a fixed pipe and a sleeve to form a detection cavity between them. During operation, pressurized water is injected into the detection cavity, causing the high-pressure water column to impact the inner wall of the pipe to be tested. If cracks or leaks exist in the pipe, a watermark will appear on the outside, thus identifying the leak. This method requires neither large equipment nor large amounts of water resources, making it easy to operate in limited spaces and effectively solving the problem of traditional testing methods occupying large areas.

[0019] 2. This multi-station pipe leak test system utilizes a deformable sealing ring combined with a pressurized chamber. By injecting water into the chamber and applying pressure, the deformable sealing ring expands and tightly adheres to the inner wall of the pipe under test, forming a sealed testing chamber. This design not only improves test accuracy, but also, due to its removable design, allows for easy replacement of worn sealing rings, increasing the durability and practicality of the system and reducing the costs associated with frequent equipment replacement.

[0020] 3. This multi-station pipe leakage test system incorporates a water circulation system, including a return pipe and an inlet pipe, to ensure efficient use of water resources during testing. When a certain pressure is reached, the pressure valve in the return pipe opens, connecting the water storage chamber with the test chamber, enabling the recycling of water resources, reducing water waste, and lowering testing costs. Furthermore, an L-shaped recovery chamber structure, consisting of an annular temporary storage chamber and an isolation cover, is introduced to collect water that may overflow during the deformation of the annular seal. This water is then reintroduced into the system through a pumping pipe for reuse. This further enhances water conservation and embodies the concept of environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a front view of the overall structure of the present invention;

[0023] Figure 3 for Figure 2 A magnified view of the structure at point A;

[0024] Figure 4 It is an exploded view of the overall structure of the present invention;

[0025] Figure 5 It is a cross-sectional view of the overall structure of the present invention;

[0026] Figure 6 for Figure 5 A magnified view of the structure at B in the middle;

[0027] Figure 7 for Figure 6 A magnified view of the structure at C in the middle;

[0028] Figure 8 It is a structural schematic diagram of the fixing plate of the present invention;

[0029] Figure 9 for Figure 8 A magnified view of the structure at D in the middle;

[0030] Figure 10 It is a structural schematic diagram of the sealing sleeve of the present invention;

[0031] Figure 11 It is a structural cross-sectional view of the isolation cover of the present invention.

[0032] The meaning of each number in the figure is:

[0033] 1. Fixed pipe; 2. First sleeve; 3. Mounting ring; 4. Water inlet pipe; 5. Return pipe; 7. Detection chamber; 8. Fixed plate; 9. Isolation cover; 10. Water storage chamber; 11. Pressurized chamber; 12. Annular temporary storage chamber; 13. Deformation sealing ring; 14. Sealing sleeve; 15. Second sealing ring; 16. Return port; 17. Mounting plate; 18. Elastic telescopic rod; 19. Ball bearing; 20. Water pumping pipe; 21. Pressurized pipe; 22. Mounting pipe; 23. Mounting sleeve. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Existing pipe leakage detection methods usually require a large space and a large amount of water resources, which not only takes up a large area but also easily causes water waste, thereby increasing detection costs.

[0036] To this end, the present invention provides a multi-station pipe leakage test system. Figure 1-Figure 3As shown, it includes a fixed tube 1 and first sleeves 2 arranged on both sides of the fixed tube 1. The outer periphery of the first sleeve 2 is fixed with a mounting ring 3. A detection cavity 7 is formed between the two mounting rings 3. The detection cavity 7 is pressurized with water to form a closed space for testing the inner wall of the tube to be tested.

[0037] During operation, the entire system is placed inside the pipe to be tested, and after the detection cavity 7 is pressurized and filled with water, the high-pressure water in the closed detection space forms an annular water column to impact the inner wall of the pipe. If cracks or holes appear in the pipe, a watermark will be formed on the outside of the pipe, thereby knowing that there is a leak in the pipe. The present invention forms a step-by-step detection pipe body through a smaller space, which saves water resources and occupies a very small space.

[0038] Since the closed detection space may leak during the water addition process, in order to save water resources, the present invention forms a closed space before adding water, and then adds water to the detection cavity 7. Figure 4-Figure 6 As shown, in this scheme, a receiving groove is formed between the fixed plate 8 and the first sleeve 2, and the receiving groove includes a pressurized chamber 11 formed between the mounting ring 3 and the fixed plate 8 and a water storage chamber 10 formed between the first sleeve 2 and the periphery of the fixed tube 1, and the water storage chamber 10 and the pressurized chamber 11 are connected, and the deformable sealing ring 13 is slidably and disassembled in the pressurized chamber 11, and a limiting wedge is provided at the top where the mounting ring 3 and the fixed plate 8 contact the deformable sealing ring 13, so that the deformable sealing ring 13 can be limited and sealed when it reaches the top of the receiving groove.

[0039] During operation, by pressurizing the water in the receiving groove, after pressurized water injection, the deformable sealing ring 13 slides and deforms in the pressurized chamber 11, and gradually fits with the inner wall of the tube body to be tested. Under pressure, the deformable sealing ring 13 will fit tightly with the inner wall of the tube body to be tested, so that a closed detection space can be formed between the two deformable sealing rings 13 and the detection chamber 7, and the deformable sealing ring 13 is detachably arranged in the pressurized chamber 11, so that after a certain distance of testing, the deformable sealing ring 13 can be easily replaced after being worn; that is, through the cooperation between the deformable sealing ring 13 and the pressurized chamber 11, when pressurized water is injected, the deformable sealing ring 13 slides and deforms along the pressurized chamber 11 and fits tightly with the inner wall of the tube body to form a closed detection space, which does not require a traditional large-volume water injection environment, and only local pressurization is required to achieve sealing, significantly reducing the amount of water required for detection and occupied space.

[0040] Further, refer to Figure 4-Figure 6 As shown, since the present solution detects the tube body step by step, the deformable sealing ring 13 that realizes the sealing effect will be worn. In order to achieve the purpose of easy replacement of the deformable sealing ring 13, a mounting tube 22 is fixedly provided at the bottom of the water storage chamber 10 in the first sleeve 2, and a mounting sleeve 23 is fixedly provided on the fixing plate 8.

[0041] During operation, the fixing plate 8 is threadedly connected to the mounting tube 22 via the mounting sleeve 23. Prior to this threaded connection, the deformable sealing ring 13 is sleeved onto the mounting tube 22, securing the fixing plate 8 to the first sleeve 2, thereby forming a receiving groove. In other words, the detachable deformable sealing ring 13 design, through the threaded connection between the mounting tube 22 and the mounting sleeve 23, allows for quick replacement of worn deformable sealing rings 13. Combined with the temporary sealing function of the second sealing ring 15, this extends the system's continuous operation cycle and reduces maintenance costs.

[0042] Further, refer to Figure 4-Figure 6 As shown, in order to realize water injection and pressurization of the receiving tank and the detection cavity 7, a pressurizing pipe 21 is fixed in the fixed pipe 1. The end of the pressurizing pipe 21 away from the fixed pipe 1 is connected to the pressurizing pump. A plurality of water inlet pipes 4 are circumferentially arranged in the water storage cavity 10. One end of the water inlet pipe 4 is connected to the water storage cavity 10, and the other end of the water inlet pipe 4 is connected to the pressurizing pipe 21. A plurality of return pipes 5 are also circumferentially arranged in the water storage cavity 10, and a pressure valve is provided in the return pipe 5. One end of the return pipe 5 is connected to the water storage chamber 10, and the other end is connected to the detection chamber 7. After the pressure valve in the return pipe 5 satisfies the deformation seal ring 13 and the inner wall of the tube to be tested, the water storage chamber 10 is connected to the detection chamber 7 through the return pipe 5. In other words, through the linkage control of the return pipe 5 and the pressure valve, when the water pressure in the water storage chamber 10 reaches the threshold, the return pipe 5 automatically connects to the detection chamber 7, ensuring that the sealing is completed before water injection testing. This staged pressurized water injection logic avoids the risk of water leakage when the sealing is not completed, further reduces water resource loss, and improves detection reliability.

[0043] During operation, water is introduced into the pressure pipe 21 through the pressure pump, and then the water is injected into the annular temporary storage chamber 12 through several water inlet pipes 4, and then flows into the pressure chamber 11, thereby pressurizing the holding tank, causing the deformable sealing ring 13 to deform and thus fit closely with the inner wall of the tube to be tested for sealing. Then, water is continued to be injected into the holding tank to increase pressure, and the water pressure in the holding tank gradually increases, making the deformable sealing ring 13 fit more tightly, achieving a sealing effect. When the water pressure reaches the threshold of the pressure valve in the return pipe 5, the pressure valve in the return pipe 5 opens, and the detection chamber 7 and the annular temporary storage chamber 12 are connected, thereby achieving the purpose of injecting water into the detection chamber 7, that is, injecting water and pressurizing in the closed detection space to form a detection of the area; and in the process of detecting another interval, the holding tank is depressurized, that is, part of the water in the holding tank is extracted through the water inlet pipe 4, and then transferred to the next interval, and then the above action is repeated to inject water and pressurize the holding tank again, and so on.

[0044] Specifically, refer to Figure 3 、 Figure 4 and Figure 7-11 As shown, since water may overflow during the process of pressurizing the receiving tank, that is, during the deformation of the deformable sealing ring 13, water may also leak during the process of depressurizing the receiving tank. In order to save water resources, the leaked water is recycled and reused. Therefore, the present invention adopts an annular temporary storage chamber 12 on the periphery of the fixed plate 8, and an isolation cover 9 is provided on the annular temporary storage chamber 12. An L-shaped recovery chamber is formed between the annular temporary storage chamber 12 and the isolation cover 9. The inner diameter of the isolation cover 9 is larger than the outer diameter of the fixed plate 8. An annular reflux port 16 is formed at the top of the isolation cover 9 and the fixed plate 8. The pressurized chamber 11 is connected to the annular temporary storage chamber 12 through the reflux port 16. The L-shaped recovery chamber includes the reflux port 16 and the annular temporary storage chamber 12. A plurality of water pumping pipes 20 are circumferentially arranged on the side of the annular temporary storage chamber 12 away from the fixed pipe 1. One end of the water pumping pipe 20 is connected to the annular temporary storage chamber 12, and the other end of the water pumping pipe 20 is connected to the other end of the pressure pump.

[0045] During operation, if excess water overflows during the deformation of the deformable sealing ring 13, the water will flow into the annular temporary storage chamber 12 through the reflux port 16 for temporary storage, and then the water flowing back into the annular temporary storage chamber 12 will be pumped back for recovery through the pumping pipe 20. Moreover, the contact end of the deformable sealing ring 13 and the isolation cover 9, and the end of the isolation cover 9 are arc-shaped structures that are compatible with the deformable sealing ring 13, which can also play a sealing role. In other words, the recovery system of the annular temporary storage chamber 12 and the pumping pipe 20, overflow water is temporarily stored in the annular temporary storage chamber 12 through the reflux port 16, and the pumping pipe 20 pumps the temporarily stored water back to the pressure pump for recycling. This structure realizes the dynamic recovery of leaked water, and combined with the L-shaped recovery chamber design of the isolation cover 9, it increases the water resource utilization rate by more than 30%.

[0046] In order to further reduce the waste of water resources in the process of water resource recovery, that is, to reduce the risk of water leakage at the contact end of the deformable sealing ring 13 and the reflux port 16, and to have a temporary sealing measure after the pressure of the containing tank is relieved, the present invention adopts an isolation cover 9 located at the contact end of the deformable sealing ring 13 and is provided with a second and a third sealing part. The second sealing part is used to seal the side of the deformable sealing ring 13 away from the first sleeve 2, and the third sealing part is used to temporarily seal the closed detection space when the pressure of the containing tank is relieved.

[0047] The second sealing portion includes a sealing sleeve 14 provided on the end of the isolation cover 9 adjacent to the deformable sealing ring 13, and the sealing sleeve 14 structure is adapted to the deformable sealing ring 13;

[0048] The third sealing portion is a second sealing ring 15 disposed on the periphery of the isolation cover 9 . The second sealing ring 15 is disposed adjacent to the sealing sleeve 14 and is made of a compressible material.

[0049] During operation, the deformable sealing ring 13 will first push up the sealing sleeve 14 during the deformation process, and then the deformable sealing ring 13 will gradually deform until the deformable sealing ring 13 is deformed to the point where the sealing sleeve 14 is tightly fitted with the inner wall of the tube to be detected. In this way, the deformable sealing ring 13 forms a closed space through the sealing sleeve 14, and the side of the deformable sealing ring 13 away from the detection cavity 7 is sealed by the sealing sleeve 14. Even if water leaks out, it will enter the annular temporary storage cavity 12 through the reflux port 16; afterwards, in the process of relieving the pressure of the containing tank, the deformable sealing ring 13 gradually retracts, and due to the retraction of the deformable sealing ring 13, This may cause water in the enclosed space within the detection cavity 7 to overflow. Since the speed is relatively fast when the entire system is transferred to the next detection space, the third sealing part only needs to serve as a temporary seal to minimize the waste of water resources. Since the second sealing ring 15 is made of a deformable material, it can be compressed into the outer wall of the isolation cover 9 during installation and then reset to achieve a sealing effect. In this way, when the deformable sealing ring 13 shrinks, the second sealing ring 15 serves as a temporary seal. Moreover, the second sealing ring 15 can be replaced at any time. If the effect decreases after use, it can be replaced.

[0050] In the process of transferring the entire system, in order to reduce friction and stabilize the entire system, refer to Figure 6 As shown, a mounting plate 17 is fixed to the side of the fixing plate 8 away from the fixing tube 1, and a plurality of sliding components are circumferentially arranged inside the outer periphery of the mounting plate 17. The sliding components include an elastic telescopic rod 18 arranged inside the mounting plate 17, and a ball 19 is rotatably arranged at the top end of the elastic telescopic rod 18.

[0051] During operation, after the entire system is placed into the tube body, the ball 19 is compressed into the mounting plate 17. After the entire system enters the tube body, the ball 19 is pressed against the inner wall of the tube body to be tested under the action of the elastic telescopic rod 18, forming a support for the entire system. In the process of transferring the system, the ball 19 plays a role in reducing friction and stabilizing the system.

[0052] To sum up, this system reduces the space requirement of traditional detection by more than 70% and reduces water consumption by 50% through the dynamic sealing of the deformable sealing ring 13, staged injection pressure detection, overflow water recovery and modular maintenance design, while realizing multi-station continuous detection, thereby effectively solving the problem that the existing pipe leakage detection method usually requires a large space and a large amount of water resources, which not only occupies a large area, but also easily causes water waste, thereby increasing the detection cost.

[0053] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station pipe leakage test system, characterized by: The invention comprises a fixed tube (1) and a first sleeve (2) arranged on both sides of the fixed tube (1); a fixed plate (8) is detachably arranged on the first sleeve (2); a receiving groove is formed between the fixed plate (8) and the first sleeve (2); a deformable sealing ring (13) is slidably arranged in the receiving groove; an annular temporary storage cavity (12) is opened on the periphery of the fixed plate (8); an isolation cover (9) is arranged on the annular temporary storage cavity (12); and an L-shaped recovery cavity is formed between the annular temporary storage cavity (12) and the isolation cover (9); A detection cavity (7) is formed between the two first sleeves (2). After water is injected into the receiving groove and pressurized, the deformed sealing ring (13) is fitted with the inner wall of the tube to be detected. Water is injected into the detection cavity (7) and pressurized to form a space for performing a closed detection on the inner wall of the tube to be detected. Water leaking from the closed detection space flows back into the L-shaped recovery cavity and is recycled.

2. The multi-station pipe leakage test system according to claim 1, characterized in that: A mounting ring (3) is fixedly provided on the periphery of the first sleeve (2), and the accommodating groove includes a pressurizing chamber (11) formed between the mounting ring (3) and the fixing plate (8), and a water storage chamber (10) formed between the first sleeve (2) and the periphery of the fixing tube (1), and the water storage chamber (10) and the pressurizing chamber (11) are connected.

3. The multi-station pipe leakage test system according to claim 2, characterized in that: The deformable sealing ring (13) is slidably and disassembled in the pressurized chamber (11), and a limiting wedge is provided at the top of the mounting ring (3) and the fixing plate (8) in contact with the deformable sealing ring (13).

4. The multi-station pipe leakage test system according to claim 2, characterized in that: A pressurizing pipe (21) is fixedly provided in the fixed pipe (1), and one end of the pressurizing pipe (21) away from the fixed pipe (1) is connected to the pressurizing pump. A plurality of water inlet pipes (4) are circumferentially provided in the water storage chamber (10), one end of the water inlet pipe (4) is connected to the water storage chamber (10), and the other end of the water inlet pipe (4) is connected to the pressurizing pipe (21).

5. The multi-station pipe leakage test system according to claim 4, characterized in that: A plurality of return pipes (5) are circumferentially arranged in the water storage chamber (10), and a pressure valve is arranged in the return pipe (5). One end of the return pipe (5) is connected to the water storage chamber (10), and the other end of the return pipe (5) is connected to the detection chamber (7).

6. The multi-station pipe leakage test system according to claim 5, characterized in that: After the pressure valve in the return pipe (5) satisfies the requirement that the deformable sealing ring (13) is completely fitted with the inner wall of the tube to be tested, the water storage chamber (10) is connected to the testing chamber (7) through the return pipe (5).

7. The multi-station pipe leakage test system according to claim 1, characterized in that: A mounting pipe (22) is fixedly provided at the bottom of the water storage chamber (10) in the first sleeve (2), a mounting sleeve (23) is fixedly provided on the fixing plate (8), and the fixing plate (8) is threadedly connected to the mounting pipe (22) via the mounting sleeve (23).

8. The multi-station pipe leakage test system according to claim 2, characterized in that: The inner diameter of the isolation cover (9) is larger than the outer diameter of the fixed plate (8), and an annular reflux port (16) is formed at the top of the isolation cover (9) and the fixed plate (8). The pressurized chamber (11) is connected to the annular temporary storage chamber (12) through the reflux port (16). The L-shaped recovery chamber includes the reflux port (16) and the annular temporary storage chamber (12). The isolation cover (9) is provided with a second and a third sealing portion at the contact end of the deformable sealing ring (13). The second sealing portion is used to seal the side of the deformable sealing ring (13) away from the first sleeve (2), and the third sealing portion is used to temporarily seal the closed detection space when the accommodating tank is depressurized.

9. The multi-station pipe leakage test system according to claim 8, characterized in that: The second sealing portion comprises a sealing sleeve (14) provided on an end portion of the isolation cover (9) adjacent to the deformable sealing ring (13), wherein the sealing sleeve (14) is structured to match the deformable sealing ring (13); The third sealing portion is a second sealing ring (15) arranged on the periphery of the isolation cover (9), the second sealing ring (15) is arranged adjacent to the sealing sleeve (14), and the second sealing ring (15) is made of a compressible material.

10. The multi-station pipe leakage test system according to claim 5, characterized in that: A plurality of water pumping pipes (20) are circumferentially arranged on one side of the annular temporary storage chamber (12) away from the fixed pipe (1), one end of the water pumping pipe (20) is connected to the annular temporary storage chamber (12), and the other end of the water pumping pipe (20) is connected to the other end of the pressure pump; A mounting plate (17) is fixedly provided on a side of the fixing plate (8) away from the fixing tube (1), and a plurality of sliding components are circumferentially arranged inside the periphery of the mounting plate (17). The sliding components include an elastic telescopic rod (18) arranged inside the mounting plate (17), and a ball (19) is rotatably arranged at the top end of the elastic telescopic rod (18).

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