Leak detection device

Abstract

The utility model discloses a leak hunting device including a first leak hunting channel, a plugging assembly and a second leak hunting channel, the first leak hunting channel includes a first channel, a second channel and a third channel connecting the first channel and the second channel, the first channel is provided with a first interface and a second interface, and the second channel is provided with a third interface and a fourth interface. The plugging assembly is provided with a first closing position, a first opening position, a second closing position and a second opening position. In the leak hunting device provided by the invention, when leak hunting is carried out, the first interface, the second interface, the third interface and the fourth structure are connected with the corresponding structures as required, and whether leak hunting exists in the internal cavity of the connecting device is detected through adjustment of the first closing position, the first opening position, the second closing position and the second opening position.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, and particularly relates to a leak detection device. Background Art

[0002] Traditional automobiles are equipped with air conditioners, which are usually arranged under the instrument panel.

[0003] However, when there is a leak in the air conditioning system of an automobile, since there are many internal leakage points in the air conditioning system, it is impossible to check the internal leakage points of the air conditioning system.

[0004] Therefore, how to achieve leak point detection is a technical problem that those skilled in the art need to solve urgently. Content of the Utility Model

[0005] The purpose of the utility model is to provide a leak detection device to achieve leak point detection.

[0006] The leak detection device provided by this application includes:

[0007] A first leak detection channel, the first leak detection channel includes a first channel, a second channel, and a third channel connecting the first channel and the second channel. The first channel is provided with a first interface and a second interface, and the second channel is provided with a third interface and a fourth interface;

[0008] A plugging component, the plugging component has a first closed position and a first open position; when the plugging component is in the first closed position, the plugging component plugs the second interface and the fourth interface, and the first interface and the second interface are connected through the third channel; when the plugging component is in the first open position, the first interface is connected to the second interface through the first channel, and the third interface is connected to the fourth interface through the second channel;

[0009] A second leak detection channel, the second leak detection channel includes a fourth channel, a fifth channel, and a sixth channel connecting the fourth channel and the fifth channel. The fourth channel is provided with a fifth interface and a sixth interface, and the fifth channel is provided with a seventh interface and an eighth interface; the plugging component has a second closed position and a second open position; when the plugging component is in the second closed position, the plugging component plugs the sixth interface and the eighth interface, and the fifth interface and the seventh interface are connected through the sixth channel; when the plugging component is in the second open position, the fifth interface is connected to the sixth interface through the fourth channel, and the seventh interface is connected to the eighth interface through the fifth channel.

[0010] Optionally, in the above leak detection device, a leak detection block is further included, the first leak detection channel and the second leak detection channel are integrally arranged in the leak detection block, and the sealing component is installed on the leak detection block.

[0011] Optionally, in the above leak detection device, the first interface and the second interface are located on opposite sides of the leak detection block, the third interface and the fourth interface are located on opposite sides of the leak detection block, the fifth interface and the sixth interface are located on opposite sides of the leak detection block, and the seventh interface and the eighth interface are located on opposite sides of the leak detection block; the first interface, the third interface, the fifth interface, and the seventh interface are located on the same side of the leak detection block.

[0012] Optionally, in the above leak detection device, the sealing component includes a first sealing module, and the first sealing module includes:

[0013] A first plug, one end of the first channel extends to the end of the leak detection block, and the first end of the first plug is slidably and sealingly arranged in the first channel;

[0014] A second plug, one end of the second channel extends to the end of the leak detection block, and the first end of the second plug is slidably and sealingly arranged in the second channel;

[0015] A first push-pull member, the first push-pull member is located outside the leak detection block, and the second end of the first plug and the second end of the second plug are connected to the first push-pull member.

[0016] Optionally, in the above leak detection device, the first sealing module further includes a first guide rod, one end of the first guide rod is connected to the first push-pull member, and the other end is slidably connected to the leak detection block.

[0017] Optionally, in the above leak detection device, the sealing component further includes a second sealing module, and the second sealing module includes:

[0018] A third plug, one end of the fourth channel extends to the end of the leak detection block, and the first end of the third plug is slidably and sealingly arranged in the fourth channel;

[0019] A fourth plug, one end of the fifth channel extends to the end of the leak detection block, and the first end of the fourth plug is slidably and sealingly arranged in the fifth channel;

[0020] A second push-pull member, the second push-pull member is located outside the leak detection block, and the second end of the third plug and the second end of the fourth plug are connected to the second push-pull member.

[0021] Optionally, in the above leak detection device, the second plugging module further includes a second guide rod, one end of the second guide rod is connected to the second pushing and pulling member, and the other end is slidably connected to the leak detection block.

[0022] Optionally, in the above leak detection device, a first operation handle is provided on the first pushing and pulling member, and the first operation handle is located on the side of the first pushing and pulling member facing away from the leak detection block;

[0023] And / or, a second operation handle is provided on the second pushing and pulling member, and the second operation handle is located on the side of the second pushing and pulling member facing away from the leak detection block.

[0024] Optionally, in the above leak detection device,

[0025] The first channel is a blind hole, and the first interface is located at the inner end of the first channel;

[0026] The second channel is a blind hole, and the third interface is located at the inner end of the second channel;

[0027] The fourth channel is a blind hole, and the fifth interface is located at the inner end of the fourth channel;

[0028] The fifth channel is a blind hole, and the seventh interface is located at the inner end of the fifth channel.

[0029] Optionally, in the above leak detection device, a locking member is further included, and the locking member is used to lock the plugging assembly and the leak detection block, and the plugging assembly is detachably connected to the leak detection block.

[0030] In the above technical solution, the leak detection device provided by the present invention includes a first leak detection channel, a plugging assembly, and a second leak detection channel. The first leak detection channel includes a first channel, a second channel, and a third channel connecting the first channel and the second channel. The first channel is provided with a first interface and a second interface, and the second channel is provided with a third interface and a fourth interface. The plugging assembly has a first closed position and a first open position; when the first plugging assembly is in the first closed position, the plugging assembly plugs the second interface and the fourth interface, and the first interface and the second interface are connected through the third channel; when the plugging assembly is in the first open position, the first interface is connected to the second interface through the first channel, and the third interface is connected to the fourth interface through the second channel. The second leak detection channel includes a fourth channel, a fifth channel, and a sixth channel connecting the fourth channel and the fifth channel. The fourth channel is provided with a fifth interface and a sixth interface, and the fifth channel is provided with a seventh interface and an eighth interface; the plugging assembly has a second closed position and a second open position; when the plugging assembly is in the second closed position, the plugging assembly plugs the sixth interface and the eighth interface, and the fifth interface and the seventh interface are connected through the sixth channel; when the plugging assembly is in the second open position, the fifth interface is connected to the sixth interface through the fourth channel, and the seventh interface is connected to the eighth interface through the fifth channel.

[0031] As can be seen from the above description, in the leak detection device provided in this application, when performing leak detection, the first interface, the second interface, the third interface, and the fourth structure are connected to the corresponding structures as needed, and whether there is a leak in the internal chamber of the connected device is detected by adjusting the first closed position, the first open position, the second closed position, and the second open position. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0033] Figure 1 Isometric view of the leak detection device provided by the embodiment of the present invention;

[0034] Figure 2 Front view of the leak detection device provided by the embodiment of the present invention;

[0035] Figure 3 Is Figure 2 Schematic structural diagram of the leak detection device shown along the A-A direction;

[0036] Figure 4 Is Figure 2 Left view of the leak detection device shown;

[0037] Figure 5 Is Figure 2 Right view of the leak detection device shown;

[0038] Figure 6 Schematic state diagram of the leak detection device provided by the embodiment of the present invention when testing whether the leak source is an air conditioning box;

[0039] Figure 7 Is Figure 6 Schematic structural diagram of the leak detection device shown along the B-B direction;

[0040] Figure 8 Schematic state diagram of the leak detection device provided by the embodiment of the present invention when testing whether the leak source is an internal condenser core;

[0041] Figure 9 Is Figure 8 Schematic structural diagram of the leak detection device shown along the C-C direction;

[0042] Figure 10Schematic diagram of the state when the leak detection device provided by the embodiment of the present invention tests whether the leakage source is the evaporator core;

[0043] Figure 11 is Figure 10 Schematic structural diagram of the shown leak detection device along the D-D direction.

[0044] Wherein Figure 1-11 Among them: 1 - First interface, 2 - Second interface, 3 - Third interface, 4 - Fourth interface, 5 - Fifth interface, 6 - Sixth interface, 7 - Seventh interface, 8 - Eighth interface, 9 - Leak detection block, 10 - First channel, 11 - Second channel, 12 - Third channel, 13 - Fourth channel, 14 - Fifth channel, 15 - Sixth channel, 16 - First plugging module, 17 - Second plugging module, 18 - First operating handle, 19 - Second operating handle, 20 - First push-pull member, 21 - First plug, 22 - Second plug, 23 - Second push-pull member, 24 - Third plug, 25 - Fourth plug. Detailed implementation manners

[0045] The core of the present invention is to provide a leak detection device to achieve leakage point detection.

[0046] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0047] Please refer to Figures 1 to 11 .

[0048] In a specific implementation manner, the leak detection device provided by the specific embodiment of the present invention includes a first leak detection channel, a plugging assembly, and a second leak detection channel. The first leak detection channel includes a first channel 10, a second channel 11, and a third channel 12 connecting the first channel 10 and the second channel 11. For the convenience of fluid flow, the first channel 10 and the second channel 11 are located at opposite ends of the third channel 12, and the first channel 10, the second channel 11, and the third channel 12 form an I-shaped structure. Of course, according to needs, the first channel 10 and the second channel 11 can also be set in a folded line or corrugated shape. For the convenience of fluid flow, preferably, the connection positions of the first channel 10 and the second channel 11 with the third channel 12 are smoothly transitioned. Specifically, the third channel 12 is connected to the middle parts of the first channel 10 and the second channel 11.

[0049] The first channel 10 is provided with a first interface 1 and a second interface 2, and the first interface 1 and the second interface 2 can be located at opposite ends of the first channel 10. The second channel 11 is provided with a third interface 3 and a fourth interface 4, and the third interface 3 and the fourth interface 4 can be located at opposite ends of the second channel 11. Specifically, the first leak detection channel can be arranged on the first module.

[0050] The plugging component has a first closed position and a first open position. When the plugging component is in the first closed position, the plugging component plugs the second interface 2 and the fourth interface 4, and the first interface 1 and the second interface 2 are connected through the third channel 12; when the plugging component is in the first open position, the first interface 1 is connected to the second interface 2 through the first channel 10, and the third interface 3 is connected to the fourth interface 4 through the second channel 11.

[0051] The second leak detection channel includes a fourth channel 13, a fifth channel 14 and a sixth channel 15. The sixth channel 15 connects the fourth channel 13 and the fifth channel 14. Preferably, the fourth channel 13 and the fifth channel 14 are located at opposite ends of the sixth channel 15, and the fourth channel 13, the fifth channel 14 and the sixth channel 15 form an I-shaped structure.

[0052] The fourth channel 13 is provided with a fifth interface 5 and a sixth interface 6. Specifically, the fifth interface 5 and the sixth interface 6 are preferably arranged at opposite ends of the fourth channel 13. The fifth channel 14 is provided with a seventh interface 7 and an eighth interface 8. Specifically, the seventh interface 7 and the eighth interface 8 are preferably arranged at opposite ends of the fifth channel 14. Specifically, the second leak detection channel can be arranged on the second module.

[0053] The plugging component has a second closed position and a second open position; when the plugging component is in the second closed position, the plugging component plugs the sixth interface 6 and the eighth interface 8, and the fifth interface 5 and the seventh interface 7 are connected through the sixth channel 15. When the plugging component is in the second open position, the fifth interface is connected to the sixth interface through the fourth channel 13, and the seventh interface 7 is connected to the eighth interface 8 through the fifth channel 14. Specifically, the plugging component includes valve bodies respectively located in the first channel 10, the second channel 11, the fourth channel 13 and the fifth channel 14, and the first closed position and the first open position, the second closed position and the second open position are switched by controlling the opening and closing of the corresponding valve bodies.

[0054] In a specific embodiment, the leak detection device further includes a leak detection block 9. The first leak detection channel and the second leak detection channel are integrally arranged on the leak detection block 9, and the plugging component is installed on the leak detection block 9. By integrally arranging the first leak detection channel and the second leak detection channel on the leak detection block 9 in this application, the number of components in the leak detection device is reduced, and the overall structure is compact.

[0055] In a specific embodiment, for the convenience of connecting other components and avoiding mutual interference, preferably, the first interface 1 and the second interface 2 are located on opposite sides of the leak detection block 9 that face away from each other, the third interface 3 and the fourth interface 4 are located on opposite sides of the leak detection block 9 that face away from each other, the fifth interface 5 and the sixth interface 6 are located on opposite sides of the leak detection block 9 that face away from each other, and the seventh interface 7 and the eighth interface 8 are located on opposite sides of the leak detection block 9 that face away from each other. The first interface 1, the third interface 3, the fifth interface 5, and the seventh interface 7 are located on the same side of the leak detection block 9. At this time, the second interface 2, the fourth interface 4, the sixth interface 6, and the eighth interface 8 are located on the other side of the leak detection block 9.

[0056] As Figure 3 and Figure 7 shown, in a specific embodiment, the plugging assembly includes a first plugging module 16, and the first plugging module 16 includes a first plug 21, a second plug 22, and a first push-pull member 20. For the convenience of sliding, preferably, the first plug 21 and the second plug 22 are preferably cylindrical structures. One end of the first channel 10 extends to the end of the leak detection block 9, and the first end of the first plug 21 is slidably and sealingly arranged in the first channel 10. By sliding the first plug 21 in the first channel 10, the switching between the first closed position and the first open position is realized.

[0057] One end of the second channel 11 extends to the end of the leak detection block 9, and the first end of the second plug 22 is slidably and sealingly arranged in the second channel 11. By sliding the second plug 22 in the second channel 11, the switching between the first closed position and the first open position is realized. The first push-pull member 20 is located outside the leak detection block 9, and the second end of the first plug 21 and the second end of the second plug 22 are connected to the first push-pull member 20. That is, the first push-pull member 20 of the present application drives the first plug 21 and the second plug 22 to move simultaneously. Specifically, by manually pulling the first push-pull member 20, the first plug 21 and the second plug 22 can be switched between the second closed position and the second open position, and the operation is simple.

[0058] To improve the sliding accuracy of the first plug 21 and the second plug 22, preferably, in a specific embodiment, the first plugging module 16 further includes a first guide rod. One end of the first guide rod is connected to the first push-pull member 20, and the other end is slidably connected to the leak detection block 9. Specifically, the first guide rod is preferably a cylindrical rod with a diameter smaller than that of the first plug 21 and the second plug 22.

[0059] The plugging assembly further includes a second plugging module 17. The second plugging module 17 includes a third plug 24, a fourth plug 25, and a second push-pull member 23. Preferably, the third plug 24 and the fourth plug 25 are cylindrical rods. One end of the fourth channel 13 extends to the end of the leak detection block 9, and the first end of the third plug 24 is slidably and sealingly arranged in the fourth channel 13. One end of the fifth channel 14 extends to the end of the leak detection block 9, and the first end of the fourth plug 25 is slidably and sealingly arranged in the fifth channel 14. The second push-pull member 23 is located outside the leak detection block 9, and the second ends of the third plug 24 and the fourth plug 25 are connected to the second push-pull member 23. That is, in this application, the second push-pull member 23 drives the third plug 24 and the fourth plug 25 to move simultaneously. Specifically, by manually pulling the second push-pull member 23, the third plug 24 and the fourth plug 25 can be switched between the second closed position and the second open position, and the operation is simple.

[0060] In a specific embodiment, the leak detection device further includes a second guide rod. One end of the second guide rod is connected to the second push-pull member 23, and the other end is slidably connected to the leak detection block 9. Preferably, the second guide rod is a cylindrical rod. Specifically, the second guide rod is preferably a cylindrical rod with a diameter smaller than that of the third plug 24 and the fourth plug 25.

[0061] To facilitate the operation of the first push-pull member 20, preferably, a first operation handle 18 is provided on the first push-pull member 20, and the first operation handle 18 is located on the side of the first push-pull member 20 facing away from the leak detection block 9. To facilitate the operation of the second push-pull member 23, preferably, a second operation handle 19 is provided on the second push-pull member 23, and the second operation handle 19 is located on the side of the second push-pull member 23 facing away from the leak detection block 9. Specifically, the first operation handle 18 and the second operation handle 19 are fixed by fasteners. In a specific embodiment, the first operation handle 18 and the second operation handle 19 can be a plug structure with a reed installed. The user pulls the position of the reed to drive the first push-pull member 20 and the second push-pull member 23 to move.

[0062] In a specific embodiment, the first channel 10 is a blind hole, and the first interface 1 is located at the inner end of the first channel 10. The second channel 11 is a blind hole, and the third interface 3 is located at the inner end of the second channel 11. The fourth channel 13 is a blind hole, and the fifth interface 5 is located at the inner end of the fourth channel 13. The fifth channel 14 is a blind hole, and the seventh interface 7 is located at the inner end of the fifth channel 14. With such a setting, it is convenient for the medium to flow in and out smoothly through the first channel 10, the second channel 11, the fourth channel 13, and the fifth channel 14.

[0063] For ease of processing, preferably, the first channel 10, the second channel 11, the fourth channel 13, and the fifth channel 14 are channels with the same structure, and the third channel 12 and the sixth channel 15 are channels with the same structure, and the whole is symmetrically distributed along the center point on the leak detection block. At this time, preferably, the first plugging module 16 and the second plugging module 17 are modules with the same structure.

[0064] In a specific embodiment, the leak detection device further includes a locking member, and the locking member is used to lock the plugging assembly and the leak detection block 9, and the plugging assembly is detachably connected to the leak detection block 9. Specifically, the locking member can be a limiting block and a buckle. Specifically, both the first plugging module 16 and the second plugging module 17 are provided with locking members. When the first plugging module 16 is in the first closed position and the second plugging module 17 is in the second closed position, the buckle locks the first push-pull member 20 and the leak detection block, and the other buckle locks the second push-pull member 23 and the leak detection block. When the first plugging module 16 is in the first open position and the second plugging module 17 is in the second open position, the limiting block is clamped to the first plug 21 and the second plug 22, and both ends of the limiting block are clamped to the leak detection block and the first push-pull member 20 respectively, to prevent the first push-pull member 20 from moving. The limiting block is clamped to the third plug 24 and the fourth plug 25, and both ends of the limiting block are clamped to the leak detection block and the second push-pull member 23 respectively, to prevent the second push-pull member 23 from moving.

[0065] When the leak detection device is used to test whether the air-conditioning box leaks, the leak detection device is placed between the air-conditioning box and the pipeline. The second interface 2 and the fourth interface 4 are connected to the evaporator pipeline, the sixth interface 6 and the eighth interface 8 are connected to the internal cooling pipeline, the first interface 1 and the third interface 3 are connected to the evaporator core in the air-conditioning box, and the fifth interface 5 and the seventh interface 7 are connected to the internal cooling core.

[0066] In the first detection method, lock whether the leakage source is the air-conditioning box.

[0067] When a leak occurs in the automotive air-conditioning system, a fixing hole is provided in the middle of the leak detection block, and the leak detection block is fixed at the original expansion valve hole position of the air-conditioning box through a bolt arranged in the fixing hole. As Figure 6 and Figure 7 shown, the first plugging module 16 and the second plugging module 17 are pushed to the innermost end of the leak detection block, where the first plugging module 16 is in the first closed position and the second plugging module 17 is in the second closed position, plugging the inlet and outlet channels leading to the evaporator core and the internal cooling core. The fluid flow direction is as shown. The first interface 1 and the third interface 3 are connected through the third channel 12, and the fifth interface 5 and the seventh interface 7 are connected through the sixth channel 15. At this time, vacuum is pumped and pressure is maintained. If the leakage of the automotive air-conditioning system disappears, then it can be judged that the leaking component is the air-conditioning box.

[0068] In the second detection method, lock whether the leakage source is the built-in condenser core.

[0069] As Figure 8 and Figure 9 shown, pull out the second plugging module 17, and then lock the second plugging module 17. The second plugging module 17 is located at the second open position, so that the channel for entering and leaving the internal cooling core is opened. The upper first plugging module 16 continues to be located at the first closed position, that is, the internal bypass channel remains unchanged. At this time, vacuum is drawn to maintain pressure. If the leakage of the automotive air conditioning system disappears, then the leakage failure of the internal cooling core can be excluded.

[0070] In the third detection method, lock whether the leakage source is the evaporator core.

[0071] As Figure 10 and Figure 11 shown, pull out the upper first plugging module 16, and then lock the first plugging module 16. The first plugging module 16 is located at the first open position, so that the channel for entering and leaving the evaporator core is opened. The lower second plugging module 17 continues to be located at the second closed position. At this time, vacuum is drawn to maintain pressure. If the leakage of the automotive air conditioning system disappears, then the leakage failure of the evaporator core can be excluded.

[0072] The leak detection device provided by the present application can quickly lock the leakage source as the air conditioning box, the evaporator core or the internal cooling core, thereby saving the troubleshooting man-hours. Specifically, it can be shortened from the original 2 workers for 1 whole day to 1 worker for 1 hour.

[0073] This application describes the leak detection device for air conditioning leak detection. When leak detection can be performed on other structures, it can be directly plugged and combined correspondingly.

[0074] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0075] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A leak detection device, characterized in that, Comprising: A first leak detection channel, the first leak detection channel includes a first channel (10), a second channel (11) and a third channel (12) connecting the first channel (10) and the second channel (11), the first channel (10) is provided with a first interface (1) and a second interface (2), and the second channel (11) is provided with a third interface (3) and a fourth interface (4); A plugging component, the plugging component has a first closed position and a first open position; when the plugging component is in the first closed position, the plugging component plugs the second interface (2) and the fourth interface (4), and the first interface (1) and the second interface (2) are connected through the third channel (12); when the plugging component is in the first open position, the first interface (1) is communicated with the second interface (2) through the first channel (10), and the third interface (3) is communicated with the fourth interface (4) through the second channel (11); A second leak detection channel, the second leak detection channel includes a fourth channel (13), a fifth channel (14) and a sixth channel (15) connecting the fourth channel (13) and the fifth channel (14), the fourth channel (13) is provided with a fifth interface (5) and a sixth interface (6), and the fifth channel (14) is provided with a seventh interface (7) and an eighth interface (8); the plugging component has a second closed position and a second open position; when the plugging component is in the second closed position, the plugging component plugs the sixth interface (6) and the eighth interface (8), and the fifth interface (5) and the seventh interface (7) are connected through the sixth channel (15); when the plugging component is in the second open position, the fifth interface (5) is communicated with the sixth interface (6) through the fourth channel (13), and the seventh interface (7) is communicated with the eighth interface (8) through the fifth channel (14).

2. The leak detection device according to claim 1, characterized in that, It further includes a leak detection block (9), the first leak detection channel and the second leak detection channel are integrally arranged on the leak detection block (9), and the plugging component is installed on the leak detection block (9).

3. The leak detection device according to claim 2, characterized in that, The first interface (1) and the second interface (2) are located on opposite sides of the leak detection block (9) arranged back to back, the third interface (3) and the fourth interface (4) are located on opposite sides of the leak detection block (9) arranged back to back, the fifth interface (5) and the sixth interface (6) are located on opposite sides of the leak detection block (9) arranged back to back, and the seventh interface (7) and the eighth interface (8) are located on opposite sides of the leak detection block (9) arranged back to back; the first interface (1), the third interface (3), the fifth interface (5) and the seventh interface (7) are located on the same side of the leak detection block (9).

4. The leak detection device according to claim 2, characterized in that, The plugging component includes a first plugging module (16), and the first plugging module (16) includes: A first plug (21), one end of the first channel (10) extends to the end of the leak detection block (9), and the first end of the first plug (21) is slidably and sealingly arranged in the first channel (10); The second plug (22), one end of the second channel (11) extends to the end of the leak detection block (9), and the first end of the second plug (22) is slidably and sealingly arranged in the second channel (11); The first push-pull member (20), the first push-pull member (20) is located outside the leak detection block (9), and the second end of the first plug (21) and the second end of the second plug (22) are connected to the first push-pull member (20).

5. The leak detection device according to claim 4, characterized in that, The first plugging module (16) further includes a first guide rod, one end of the first guide rod is connected to the first push-pull member (20), and the other end is slidably connected to the leak detection block (9).

6. The leak detection device according to claim 4, characterized in that, The plugging assembly further includes a second plugging module (17), and the second plugging module (17) includes: The third plug (24), one end of the fourth channel (13) extends to the end of the leak detection block (9), and the first end of the third plug (24) is slidably and sealingly arranged in the fourth channel (13); The fourth plug (25), one end of the fifth channel (14) extends to the end of the leak detection block (9), and the first end of the fourth plug (25) is slidably and sealingly arranged in the fifth channel (14); The second push-pull member (23), the second push-pull member (23) is located outside the leak detection block (9), and the second end of the third plug (24) and the second end of the fourth plug (25) are connected to the second push-pull member (23).

7. The leak detection device according to claim 6, wherein, The second plugging module (17) further includes a second guide rod, one end of the second guide rod is connected to the second push-pull member (23), and the other end is slidably connected to the leak detection block (9).

8. The leak detection device according to claim 6, characterized in that, The first push-pull member (20) is provided with a first operation handle (18), and the first operation handle (18) is located on the side of the first push-pull member (20) facing away from the leak detection block (9); And / or, the second push-pull member (23) is provided with a second operation handle (19), and the second operation handle (19) is located on the side of the second push-pull member (23) facing away from the leak detection block (9).

9. The leak detection device according to claim 2, wherein The first channel (10) is a blind hole, and the first interface (1) is located at the inner end of the first channel (10); The second channel (11) is a blind hole, and the third interface (3) is located at the inner end of the second channel (11); The fourth channel (13) is a blind hole, and the fifth interface (5) is located at the inner end of the fourth channel (13); The fifth channel (14) is a blind hole, and the seventh interface (7) is located at the inner end of the fifth channel (14).

10. The leak detection device according to any one of claims 2-9, characterized in that, It further includes a locking member, the locking member is used to lock the plugging assembly and the leak detection block (9), and the plugging assembly is detachably connected to the leak detection block (9).

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