Helium detection machine for water-cooling plate

Abstract

The utility model relates to detection equipment of a water-cooling plate, in particular to a helium detection machine for the water-cooling plate. Comprising a sealing box, a helium detection assembly, a helium filling machine, a helium detector and vacuumizing equipment, the sealing box is provided with a lifting door; the helium detection assembly comprises a base, a lower sealing assembly, a first driving device, an upper sealing assembly and a second driving device; the lower sealing assembly comprises a lower bottom plate, a positioning plate and two lower sealing joint assemblies; the upper sealing assembly comprises an upper mounting plate capable of moving up and down relative to the base, an upper pressing plate fixedly arranged on the upper mounting plate and used for pressing the positioning plate, and two upper sealing connector assemblies arranged at the two ends of the upper pressing plate respectively and used for sealing upper pipe heads of the water cooling plate. When the lower sealing assembly is in the second state, in the descending process of the upper sealing assembly, the upper pressing plate presses the water cooling plate, the lower sealing connector assembly seals the lower pipe head, and the upper sealing connector assembly seals the upper pipe head. The utility model provides a helium detection machine for a water-cooling plate. The helium detection machine can improve the sealing detection efficiency and detection precision of the water-cooling plate.

Description

Technical Field

[0001] This application relates to a detection device for a water-cooled plate, especially a helium leak detector for a water-cooled plate. Background Art

[0002] The water-cooled plate is a weight component of liquid cooling in a battery pack. After the water-cooled plate is assembled, it needs to be subjected to a sealing performance test. The traditional sealing test method is to add high-pressure gas into the water-cooled plate and then put it into water, and observe whether there is leakage of the water-cooled plate manually. This method has low efficiency and low detection accuracy. Summary of the Invention

[0003] In view of this, this application provides a helium leak detector for a water-cooled plate, which can improve the detection efficiency and accuracy of the sealing performance of the water-cooled plate.

[0004] To achieve the above object, this application is realized through the following technical solutions:

[0005] A helium leak detector for a water-cooled plate, characterized in that it includes a sealing box, a helium leak detection component, a helium filling machine, a helium leak detector and a vacuum pumping device; the sealing box has a lifting door that can be opened and closed up and down, the helium leak detection component is installed in the sealing box, and the helium leak detection component includes a base fixedly arranged in the sealing box, a lower sealing component sliding on the base in the front-rear direction, a first driving device for driving the lower sealing component to move back and forth, an upper sealing component moving up and down relative to the base, and a second driving device for driving the upper sealing component to move up and down; the lower sealing component has a first state of moving out of the sealing box and a second state of moving onto the base during the moving process, the lower sealing component includes a lower bottom plate that can slide back and forth relative to the base, a positioning plate fixedly installed above the lower bottom plate for positioning and placing the water-cooled plate, and two lower sealing joint components respectively arranged at both ends of the positioning plate for sealing the lower tube head of the water-cooled plate; the upper sealing component includes an upper mounting plate that can move up and down relative to the base, an upper pressing plate fixedly arranged on the upper mounting plate for pressing the positioning plate, and two upper sealing joint components respectively arranged at both ends of the upper pressing plate for sealing the upper tube head of the water-cooled plate; when the lower sealing component is in the second state and the upper sealing component is descending, the upper pressing plate presses the water-cooled plate, the lower sealing joint component seals the lower tube head, and the upper sealing joint component seals the upper tube head; the vacuum pumping device is connected to the sealing box for evacuating the sealing box; the helium filling machine is connected to the lower sealing joint component for filling helium into the water-cooled plate, and the helium leak detector is connected to the sealing box for detecting whether there is helium leaking from the water-cooled plate into the sealing box.

[0006] For the helium leak detector for the water-cooled plate of the present application described above, when the lower sealing assembly moves out of the sealing box, the water-cooled plate is placed on the positioning plate. After the lower sealing assembly is reset, the upper sealing assembly descends, so that the upper pressing plate presses the water-cooled plate, the lower sealing joint assembly seals the lower pipe head, and the upper sealing joint assembly seals the upper pipe head. Subsequently, the sealing box is evacuated, helium is filled into the water-cooled plate through a helium filling machine, and a helium leak detector is used to detect whether helium gas leaks from the water-cooled plate into the sealing box, thereby determining the sealing performance of the water-cooled plate, which is highly efficient and accurate.

[0007] In some embodiments, the lower bottom plate is slidably connected to the base back and forth through a first guide rail, and the first driving device is a first cylinder connected between the base and the lower bottom plate. A vertically arranged guide rod is provided on the base, and the upper mounting plate is slidably connected to the guide rod up and down through a guide sleeve, and the second driving device is a second cylinder connected between the base and the upper mounting plate.

[0008] In some embodiments, both the lower sealing joint assembly and the upper sealing joint assembly include a sealing bottom plate, a fine-tuning assembly, and a sealing cup. The sealing bottom plate is fixedly installed on the lower bottom plate or the upper mounting plate. The fine-tuning assembly is used to finely adjust the sealing cup left and right. The fine-tuning assembly includes a fine-tuning guide rail fixedly arranged on the sealing bottom plate and extending in the left-right direction, a fine-tuning slider slidably connected to the fine-tuning guide rail, and a fine-tuning component connected to the fine-tuning slider. The sealing cup is fixedly installed on the fine-tuning slider. The fine-tuning component includes a support, a connecting rod, a first nut, a second nut, a first spring, and a second spring. The support is fixedly installed on the sealing bottom plate and is located on one side of the fine-tuning slider in the left-right direction, and a through hole penetrating left and right is provided on the support. The connecting rod passes through the through hole of the support and is fixedly connected to the fine-tuning slider. The first nut is threadedly connected to the connecting rod and is located on the left side of the support. The second nut is threadedly connected to the connecting rod and is located on the right side of the support. The first spring is sleeved on the connecting rod and its two ends respectively abut against the first nut and the left side surface of the support. The second spring is sleeved on the connecting rod and its two ends respectively abut against the second nut and the right side surface of the support. A gap is reserved on the fine-tuning guide rail for the fine-tuning slider to finely adjust in the front-back direction.

[0009] Due to manufacturing deviations of the water-cooled plate, by providing a fine-tuning assembly between the sealing bottom plate and the sealing cup, the sealing cup can perform self-adaptive elastic fine-tuning in the left-right direction when sleeved on the corresponding pipe head, and a gap is reserved on the fine-tuning guide rail for the slider to finely adjust in the front-back direction, so that the sealing cup can also be finely adjusted in the front-back direction, which can reduce rigid collisions and thus protect the equipment and the water-cooled plate.

[0010] In some embodiments, the sealed cup includes a cup body, a cup lid, an elastic sealing ring, and a movable joint. The cup body is fixedly installed on the fine-tuning slider. The cup lid is fixedly arranged on the cup body, and a cup mouth for the lower pipe head or the upper pipe head to enter the cup is provided in the middle of the cup lid. The movable joint and the elastic sealing ring are installed in the cup body. In the vertical direction, the elastic sealing ring is located between the movable joint and the cup lid. An air inlet hole is provided at the bottom of the groove inside the cup body. The movable joint of the lower sealing joint assembly is provided with a helium filling port, and a helium filling channel for connecting with the helium filling port is provided on the fine-tuning slider. When inflating the air inlet hole, the movable joint can be pushed upward to squeeze the elastic sealing ring, so that the middle area of the elastic sealing ring can tighten and seal the corresponding upper pipe head or lower pipe head.

[0011] In some embodiments, a long waist hole extending in the left-right direction is provided on the sealed bottom plate. A plurality of mounting holes spaced left and right are provided on both the lower bottom and the upper mounting plate. The sealed bottom plate is fixedly installed on the upper mounting plate or the lower bottom plate by bolts connected to the long waist hole and the mounting holes. The positioning plate and the lower bottom plate are detachably connected, and the upper pressure plate and the upper mounting plate are also detachably connected.

[0012] This water-cooled plate helium leak detector has strong adaptability. When it is necessary to detect water-cooled plates of different specifications, it is necessary to first replace the upper pressure plate and the positioning plate, and then adjust the left-right position of the sealing plate.

[0013] In some embodiments, a positioning pin protruding upward is provided on the positioning plate, and a pin hole cooperating with the positioning pin is provided at the bottom of the upper pressure plate. During equipment debugging, the relative positions of the upper pressure plate and the positioning plate can be positioned through the positioning pin.

[0014] In some embodiments, a plurality of placement grooves for placing the water-cooled plate are provided on the positioning plate. Adjacent placement grooves are separated by partition strips. A groove for guiding the movement of the partition strip in the left-right direction is also provided on the positioning plate.

[0015] It can be seen from the above technical solutions that the present application has at least the following advantages and positive effects:

[0016] For a water-cooled plate helium leak detector of the present application, when the lower sealing assembly moves out of the sealed box, the water-cooled plate is placed on the positioning plate. After the lower sealing assembly is reset, the upper sealing assembly descends, so that the upper pressure plate presses the water-cooled plate, the lower sealing joint assembly seals the lower pipe head, and the upper sealing joint assembly seals the upper pipe head. Subsequently, the sealed box is evacuated, helium is filled into the water-cooled plate through a helium filling machine, and a helium leak detector is used to detect whether there is helium leaking from the water-cooled plate into the sealed box, so as to determine the sealing performance of the water-cooled plate, with high efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1Schematic structural diagram of an embodiment of the present application;

[0018] Figure 2 Schematic structural diagram of an embodiment of the present application during material receiving;

[0019] Figure 3 Schematic structural diagram of the lower sealing assembly in an embodiment of the present application;

[0020] Figure 4 Schematic structural diagram of the lower sealing joint assembly in an embodiment of the present application;

[0021] Figure 5 Cross-sectional view of the lower sealing joint assembly in an embodiment of the present application;

[0022] Figure 6 Cross-sectional view of the sealing cup of the upper sealing joint assembly in an embodiment of the present application;

[0023] Figure 7 Schematic structural diagram of the upper sealing assembly in an embodiment of the present application;

[0024] Figure 8 Schematic structural diagram of the water-cooling plate.

[0025] Label description: 1. Sealing box; 2. Base; 21. First guide rail; 22. Guide rod; 3. Lower sealing assembly; 31. Lower bottom plate; 311. Mounting hole; 32. Positioning plate; 321. Positioning pin; 322. Placing groove; 33. Lower sealing joint assembly; 331. Sealing bottom plate; 3311. Long slotted hole; 332. Fine-tuning assembly; 3321. Fine-tuning guide rail; 3322. Fine-tuning slider; 3323. Support; 3324. Connecting rod; 3325. First nut; 3326. Second nut; 3327. First spring; 3328. Second spring; 333. Sealing cup; 3331. Cup body; 3332. Cup cover; 3333. Elastic sealing ring; 3334. Moving joint; 3335. Air inlet hole; 3336. Helium filling port; 34. Partition strip; 4. Upper sealing assembly; 41. Upper mounting plate; 42. Upper pressing plate; 421. Pin hole; 43. Upper sealing joint assembly; 5. Water-cooling plate; 51. Current collector; 511. Lower pipe head; 512. Upper pipe head. Detailed implementation manners

[0026] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. The terms used in the implementation part of the present application are only for explaining the specific embodiments of the present application, rather than aiming to limit the present application.

[0027] See Figure 8 , the water-cooling plate 5 includes a plate body and current collectors 51 provided at both ends of the plate body, and a downward lower pipe head 511 and an upward upper pipe head 512 are integrally connected to the current collector 51.

[0028] See Figures 1 to 7 Figures 1 to 7 , an embodiment of the present application provides a helium leak detector for a water-cooled plate, which includes a sealed box 1, a helium leak detection component, a helium filling machine, a helium leak detector, and a vacuum pumping device; the sealed box 1 has a lifting door that can be opened and closed up and down, the helium leak detection component is installed in the sealed box 1, and the helium leak detection component includes a base 2 fixedly arranged in the sealed box 1, a lower sealing component 3 sliding on the base 2 in the front-rear direction, a first driving device for driving the lower sealing component 3 to move back and forth, an upper sealing component 4 moving up and down relative to the base 2, and a second driving device for driving the upper sealing component 4 to move up and down; the lower sealing component 3 has a first state of moving out of the sealed box 1 and a second state of moving onto the base 2 during the movement process, and the lower sealing component 3 includes a lower bottom plate 31 that can slide back and forth relative to the base 2, a positioning plate 32 fixedly installed above the lower bottom plate 31 for positioning and placing the water-cooled plate 5, and two lower sealing joint components 33 respectively arranged at both ends of the positioning plate 32 for sealing the lower tube head 511 of the water-cooled plate 5; the upper sealing component 4 includes an upper mounting plate 41 that can move up and down relative to the base 2, an upper pressing plate 42 fixedly arranged on the upper mounting plate 41 for pressing the positioning plate 32, and two upper sealing joint components 43 respectively arranged at both ends of the upper pressing plate 42 for sealing the upper tube head 512 of the water-cooled plate 5; when the lower sealing component 3 is in the second state, during the descending process of the upper sealing component 4, the upper pressing plate 42 presses the water-cooled plate 5, the lower sealing joint component 33 seals the lower tube head 511, and the upper sealing joint component 43 seals the upper tube head 512; the vacuum pumping device is connected to the sealed box 1 for evacuating the sealed box 1; the helium filling machine is connected to the lower sealing joint component 33 for filling helium into the water-cooled plate 5, and the helium leak detector is connected to the sealed box 1 for detecting whether there is helium leaking from the water-cooled plate 5 into the sealed box 1.

[0029] For this helium leak detector for a water-cooled plate, when the lower sealing component 3 moves out of the sealed box 1, the water-cooled plate 5 is placed on the positioning plate 32. After the lower sealing component 3 is reset, the upper sealing component 4 descends, so that the upper pressing plate 42 presses the water-cooled plate 5, the lower sealing joint component 33 seals the lower tube head 511, and the upper sealing joint component 43 seals the upper tube head 512; then the sealed box 1 is evacuated, helium is filled into the water-cooled plate 5 through the helium filling machine, and it is detected by the helium leak detector whether there is helium leaking from the water-cooled plate 5 into the sealed box 1, so as to determine the sealing performance of the water-cooled plate 5, with high efficiency and accuracy.

[0030] The lower base plate 31 is slidably connected to the base 2 before and after via a first guide rail 21, and the first driving device is a first air cylinder connected between the base 2 and the lower base plate 31; a vertical guide rod 22 is provided on the base 2, and the upper mounting plate 41 is slidably connected to the guide rod 22 up and down via a guide sleeve, and the second driving device is a second air cylinder connected between the base 2 and the upper mounting plate 41.

[0031] Both the lower sealing joint assembly 33 and the upper sealing joint assembly 43 include a sealing base plate 331, a fine-tuning assembly 332, and a sealing cup 333; the sealing base plate 331 is fixedly installed on the lower base plate 31 or the upper mounting plate 41, the fine-tuning assembly 332 is used for finely adjusting the sealing cup 333 left and right, the fine-tuning assembly 332 includes a fine-tuning guide rail 3321 fixedly provided on the sealing base plate 331 and extending in the left-right direction, a fine-tuning slider 3322 slidably connected to the fine-tuning guide rail 3321, and a fine-tuning member connected to the fine-tuning slider 3322, and the sealing cup 333 is fixedly installed on the fine-tuning slider 3322; the fine-tuning member includes a support 3323, a connecting rod 3324, a first nut 3325, a second nut 3326, a first spring 3327, and a second spring 3328, the support 3323 is fixedly installed on the sealing base plate 331 and located on one side of the fine-tuning slider 3322 in the left-right direction, and a through hole penetrating left and right is provided on the support 3323, the connecting rod 3324 passes through the through hole of the support 3323 and is fixedly connected to the fine-tuning slider 3322, the first nut 3325 is threadedly connected to the connecting rod 3324 and located on the left side of the support 3323, the second nut 3326 is threadedly connected to the connecting rod 3324 and located on the right side of the support 3323, the first spring 3327 is sleeved on the connecting rod 3324 and its two ends respectively abut against the first nut 3325 and the left side surface of the support 3323, the second spring 3328 is sleeved on the connecting rod 3324 and its two ends respectively abut against the second nut 3326 and the right side surface of the support 3323; a gap is reserved on the fine-tuning guide rail 3321 for the fine-tuning slider 3322 to finely adjust in the front-back direction.

[0032] Due to the manufacturing deviation of the water-cooling plate 5, by providing the fine-tuning assembly 332 between the sealing base plate 331 and the sealing cup 333, when the sealing cup 333 is sleeved onto the corresponding pipe head, it can perform adaptive elastic fine-tuning in the left-right direction, and a gap is reserved on the fine-tuning guide rail 3321 for the slider to finely adjust in the front-back direction, so that the sealing cup 333 can also perform fine-tuning in the front-back direction, which can reduce rigid collisions and thus protect the equipment and the water-cooling plate 5.

[0033] The sealed cup 333 includes a cup body 3331, a cup lid 3332, an elastic sealing ring 3333, and a movable joint 3334. The cup body 3331 is fixedly installed on the fine-tuning slider 3322. The cup lid 3332 is fixedly arranged on the cup body 3331, and a cup mouth for the lower pipe head 511 or the upper pipe head 512 to enter the cup is provided in the middle of the cup lid 3332. The movable joint 3334 and the elastic sealing ring 3333 are installed in the cup body 3331. In the vertical direction, the elastic sealing ring 3333 is located between the movable joint 3334 and the cup lid 3332. An air inlet hole 3335 is provided at the bottom of the groove inside the cup body 3331. The movable joint 3334 of the lower sealing joint assembly 33 is provided with a helium filling port 3336, and a helium filling channel for connecting with the helium filling port 3336 is provided on the fine-tuning slider 3322. When inflating the air inlet hole 3335, the movable joint 3334 can be pushed upward to squeeze the elastic sealing ring 3333, so that the middle area of the elastic sealing ring 3333 can be tightened and sealed against the corresponding upper pipe head 512 or lower pipe head 511. The helium filling channel is connected to a helium filling machine for filling helium during detection, while the air inlet hole 3335 is connected to an external inflation device, mainly for selectively holding and sealing the corresponding pipe head.

[0034] A long waist hole 3311 extending in the left-right direction is provided on the sealed bottom plate 331. A plurality of mounting holes 311 spaced left and right are provided on both the lower bottom and the upper mounting plate 41. The sealed bottom plate 331 is fixedly installed on the upper mounting plate 41 or the lower bottom plate 31 through bolts connected to the long waist hole 3311 and the mounting holes 311. The positioning plate 32 is detachably connected to the lower bottom plate 31, and the upper pressure plate 42 is also detachably connected to the upper mounting plate 41.

[0035] This water-cooled plate helium leak detector has strong adaptability. When it is necessary to detect water-cooled plates 5 of different specifications, it is necessary to first replace the upper pressure plate 42 and the positioning plate 32, and then adjust the left-right position of the sealing plate.

[0036] The positioning plate 32 is provided with an upward protruding positioning pin 321, and a pin hole 421 cooperating with the positioning pin 321 is provided at the bottom of the upper pressure plate 42. During equipment debugging, the relative positions of the upper pressure plate 42 and the positioning plate 32 can be positioned by the positioning pin 321.

[0037] The positioning plate 32 is provided with a plurality of placement grooves 322 for placing the water-cooled plate 5. Adjacent placement grooves 322 are separated by partition strips 34. The positioning plate 32 is also provided with grooves for guiding the movement of the partition strips 34 in the left-right direction.

[0038] The following briefly describes the working process and usage method of the water-cooled plate helium leak detector in the above embodiment:

[0039] The movable door of the sealed box 1 opens upward, the first cylinder extends, and the lower sealing assembly 33 is pushed forward to move out of the sealed box 1. The water-cooled plate 5 is placed on the positioning plate 32, and the lower pipe heads 511 at both ends of the water-cooled plate are inserted into the sealing cups 333 of the lower sealing assembly 32. The first cylinder retracts, driving the lower sealing assembly to move onto the base 2. The second cylinder extends downward, driving the upper sealing assembly 4 to descend. The upper pressing plate 42 presses the water-cooled plate 5, and the sealing cups of the upper sealing joint assemblies 43 at both ends descend and are sleeved onto the upper pipe heads 512 at both ends of the water-cooled plate to seal it, and the movable door descends. The vacuum pumping device evacuates the sealed box, and the helium filling machine fills helium into the inner wall of the water-cooled plate through the sealing cup, and the helium detector detects whether there is helium leakage to determine the sealing performance of the water-cooled plate.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A helium leak detector for a water-cooled plate, characterized in that: It includes a sealed box, a helium leak detection component, a helium filling machine, a helium leak detector, and a vacuum pumping device; the sealed box has a lifting door that can be opened and closed up and down, the helium leak detection component is installed inside the sealed box, and the helium leak detection component includes a base fixedly arranged inside the sealed box, a lower sealing component sliding in the front-back direction on the base, a first driving device for driving the lower sealing component to move back and forth, an upper sealing component moving up and down relative to the base, and a second driving device for driving the upper sealing component to move up and down; During the movement, the lower sealing component has a first state of moving out of the sealed box and a second state of moving onto the base. The lower sealing component includes a lower bottom plate that can slide back and forth relative to the base, a positioning plate fixedly installed above the lower bottom plate for positioning and placing the water-cooled plate, and two lower sealing joint components respectively arranged at both ends of the positioning plate for sealing the lower tube heads of the water-cooled plate; the upper sealing component includes an upper mounting plate that can move up and down relative to the base, an upper pressing plate fixedly arranged on the upper mounting plate for pressing the positioning plate, and two upper sealing joint components respectively arranged at both ends of the upper pressing plate for sealing the upper tube heads of the water-cooled plate; when the lower sealing component is in the second state, during the downward movement of the upper sealing component, the upper pressing plate presses the water-cooled plate, the lower sealing joint component seals the lower tube head, and the upper sealing joint component seals the upper tube head; the vacuum pumping device is connected to the sealed box for evacuating the sealed box; the helium filling machine is connected to the lower sealing joint component for filling helium into the water-cooled plate, and the helium leak detector is connected to the sealed box for detecting whether there is helium leaking from the water-cooled plate into the sealed box.

2. The helium leak detector for a water-cooled plate according to claim 1, wherein: The lower bottom plate is slidably connected to the base back and forth through a first guide rail, and the first driving device is a first cylinder connected between the base and the lower bottom plate; a vertical guide rod is arranged on the base, and the upper mounting plate is slidably connected to the guide rod up and down through a guide sleeve, and the second driving device is a second cylinder connected between the base and the upper mounting plate.

3. The helium leak detector for a water-cooled plate according to claim 1, wherein: Both the lower sealing joint assembly and the upper sealing joint assembly include a sealing bottom plate, a fine-tuning assembly, and a sealing cup; the sealing bottom plate is fixedly installed on the lower bottom plate or the upper mounting plate, the fine-tuning assembly is used to finely adjust the sealing cup left and right, the fine-tuning assembly includes a fine-tuning guide rail fixedly arranged on the sealing bottom plate and extending in the left-right direction, a fine-tuning slider slidably connected to the fine-tuning guide rail, and a fine-tuning component connected to the fine-tuning slider, and the sealing cup is fixedly installed on the fine-tuning slider; the fine-tuning component includes a support, a connecting rod, a first nut, a second nut, a first spring, and a second spring, the support is fixedly installed on the sealing bottom plate and is located on one side of the fine-tuning slider in the left-right direction, and the support is provided with a through hole penetrating left and right, the connecting rod passes through the through hole of the support and is fixedly connected to the fine-tuning slider, the first nut is threadedly connected to the connecting rod and is located on the left side of the support, the second nut is threadedly connected to the connecting rod and is located on the right side of the support, the first spring is sleeved on the connecting rod and its two ends respectively abut against the first nut and the left side surface of the support, the second spring is sleeved on the connecting rod and its two ends respectively abut against the second nut and the right side surface of the support; a gap is reserved on the fine-tuning guide rail for the fine-tuning slider to finely adjust in the front-back direction.

4. The helium leak detector for a water-cooled plate according to claim 3, wherein: The sealing cup includes a cup body, a cup cover, an elastic sealing ring, and a movable joint. The cup body is fixedly installed on the fine-tuning slider, the cup cover is fixedly arranged on the cup body, and a cup mouth for the lower pipe head or the upper pipe head to enter the cup is provided in the middle of the cup cover. The movable joint and the elastic sealing ring are installed in the cup body; in the up-down direction, the elastic sealing ring is located between the movable joint and the cup cover, and an air inlet hole is provided at the bottom of the groove inside the cup body; the movable joint of the lower sealing joint assembly is provided with a helium filling port, and a helium filling channel for connecting with the helium filling port is provided on the fine-tuning slider; when inflating into the air inlet hole, the movable joint can be pushed upward to squeeze the elastic sealing ring, so that the middle area of the elastic sealing ring can be tightened and sealed against the corresponding upper pipe head or lower pipe head.

5. The helium leak detector for a water-cooled plate according to claim 3, wherein: The sealing bottom plate is provided with an oblong hole extending in the left-right direction, and a plurality of mounting holes spaced left and right are provided on both the lower bottom plate and the upper mounting plate. The sealing bottom plate is fixedly installed on the upper mounting plate or the lower bottom plate through bolts connected to the oblong hole and the mounting holes; the positioning plate is detachably connected to the lower bottom plate, and the upper pressing plate is also detachably connected to the upper mounting plate.

6. The helium leak detector for a water-cooled plate according to claim 1, wherein: The positioning plate is provided with an upward protruding positioning pin, and a pin hole matching with the positioning pin is provided at the bottom of the upper pressing plate.

7. A helium leak detector for a water-cooled plate, according to claim 1, characterized in that: The positioning plate is provided with a plurality of placement grooves for placing the water-cooling plate, and adjacent placement grooves are separated by partition strips. The positioning plate is also provided with a groove for guiding the movement of the partition strips in the left-right direction.

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