A leak detection tool for water-cooled quick-change joints

Abstract

The utility model discloses a leak detection tool for a water-cooled quick-change joint, comprising a vacuum box and a bottom plate, a first sealing tool, and a second sealing tool arranged inside the vacuum box. The first sealing tool and the second sealing tool are respectively matched with two ends of the water-cooled quick-change joint, so that the first sealing tool and the second sealing tool respectively form independent leak detection spaces, and the first sealing tool and the second sealing tool are also connected to a helium filling unit. The utility model can simultaneously fill two independent spaces with helium, so that the two ends of the water-cooled quick-change joint can be detected at the same time, thereby improving the detection efficiency and meeting the needs of rapid leak detection in modern industrial production lines.

Description

Technical Field

[0001] The utility model relates to a helium detection tool, in particular to a water-cooled quick-change joint leakage detection tool. Background Art

[0002] With the hot market of electric vehicles, the safety of automotive battery packs is an important guarantee for the reliability of its products. If the battery pack overheats and causes the car to catch fire, it will seriously affect the image of a company's product quality in the minds of consumers, threaten the life safety and property loss of consumers, and even destroy the life of a company. Therefore, each automotive battery pack will have a cooling device, and water cooling is one of the commonly used cooling methods. Quick-change connectors are usually used in the water cooling process. If the sealing of the water-cooled quick-change connector is insufficient, it will cause cooling water leakage, which will threaten the safety of the battery pack. Therefore, it is necessary to test the sealing of the water-cooled quick-change connector. Usually, both ends of the water-cooled quick-change connector need to be tested. Therefore, the sealing test must be divided into two steps, that is, first, one end is tested for air tightness, and then the other end is tested for air tightness. Only when the air tightness of both ends meets the requirements, the water-cooled quick-change connector is qualified. This method seriously affects the detection speed because it needs to be carried out step by step, resulting in low detection efficiency and cannot meet the needs of rapid leak detection in modern industrial production lines. Utility Model Content

[0003] In order to solve the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a water-cooled quick-change joint leak detection tool, which can detect both ends of the water-cooled quick-change joint at the same time, thereby improving the detection efficiency.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a water-cooled quick-change joint leak detection tool, comprising a vacuum box and a bottom plate arranged inside the vacuum box, a first sealing tool, and a second sealing tool, wherein the first sealing tool and the second sealing tool are respectively matched with two ends of the water-cooled quick-change joint;

[0005] The first sealing tool comprises a first helium cover, a sealing plate and a supporting unit. The first helium cover is installed in the vacuum box through a lifting mechanism. The sealing plate is adapted to the first helium cover, so that when the first helium cover is lowered to the sealing plate position through the lifting mechanism, the bottom of the first helium cover is sealed and docked with the sealing plate. A first through hole is provided in the sealing plate, and the first through hole is adapted to the water-cooled quick-change joint.

[0006] The second sealing tool comprises a second helium cover, the top of the second helium cover has a second through hole for inserting a water-cooled quick-change joint, and a sealing unit is further provided between the second helium cover and the water-cooled quick-change joint;

[0007] The bottom of the second helium cover is fixedly connected to the bottom plate, and an air flow channel is also provided in the bottom plate, one end of the air flow channel is connected to the bottom of the water-cooled quick-change joint, and the other end of the air flow channel is connected to the vacuum box;

[0008] The first helium cover and the second helium cover are also connected with a helium filling unit.

[0009] Optionally, the supporting unit includes symmetrically distributed pads, the pads are fixedly mounted on the surface of the base plate, and the sealing plates are fixedly mounted on the tops of the pads.

[0010] Optionally, the inner top of the first helium cover is connected to a sealing head via a spring, and the sealing head is coaxially distributed with the first through hole;

[0011] The sealing head is a cylindrical column, and the diameter of the sealing head is matched with the inner diameter of the water-cooled quick-change joint, so that the sealing head just blocks the end of the water-cooled quick-change joint.

[0012] Optionally, the sealing unit is an inflatable sealing ring.

[0013] By adopting the above technical solution, the first sealing fixture and the second sealing fixture of the utility model can seal both ends of the water-cooled quick-change joint at the same time, thereby forming two independent spaces. Therefore, during detection, the two independent spaces can be filled with helium at the same time, so that both ends of the water-cooled quick-change joint can be detected at the same time, thereby improving the detection efficiency and meeting the needs of rapid leak detection in modern industrial production lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the first sealing tool of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the second sealing tool of the utility model. DETAILED DESCRIPTION

[0017] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] like Figure 1As shown, the utility model discloses a water-cooled quick-change joint leak detection tool, which includes a vacuum box 100 and a bottom plate 200 arranged inside the vacuum box 100, a first sealing tool 300 and a second sealing tool 400, the first sealing tool 300 and the second sealing tool 400 are respectively matched with the two ends of the water-cooled quick-change joint 500, so that the two ends of the water-cooled quick-change joint 500 form independent leak detection spaces, thereby realizing simultaneous leak detection.

[0020] In the present invention, the first sealing tool 300 is used to seal one end of the water-cooled quick-change joint 500. Specifically, Figure 2 As shown, the first sealing tool 300 includes a first helium cover 310, a sealing plate 320 and a support unit 330. The support unit 330 is used to fix the sealing plate 320 in the base plate 200. In one embodiment of the utility model, the support unit 330 uses symmetrically distributed pads, which are fixedly installed on the base plate 200, and the sealing plate 320 is placed on the pads and fixedly connected to the pads. A first through hole is provided in the sealing plate 320, and the first through hole is used to pass through the other end of the water-cooled quick-change joint 500 so that the other end of the water-cooled quick-change joint 500 can pass through the first through hole. It should be noted that a sealing ring needs to be filled between the water-cooled quick-change joint 500 and the first through hole to ensure that the first through hole does not leak helium. In addition, in the present invention, the first helium cover 310 is installed in the vacuum box 100 through the lifting mechanism 350, and the sealing plate 320 is adapted to the first helium cover 310, so that when the first helium cover 310 is lowered to the sealing plate 320 position through the lifting mechanism 350, the bottom of the first helium cover 310 is sealed and docked with the sealing plate 320. The lifting mechanism 350 can be a cylinder assembly, which is a conventional lifting technology in the art and will not be described in detail here.

[0021] Since the water-cooled quick-change joint 500 is a tube body with two ends passing through, the ends of the water-cooled quick-change joint 500 need to be blocked in the first helium cover 310. Therefore, a sealing head 340 is connected to the inner top of the first helium cover 310 through a spring 360. The sealing head 340 is coaxially distributed with the first through hole. The sealing head 340 is a cylindrical column, and the diameter of the sealing head 340 is adapted to the inner diameter of the water-cooled quick-change joint 200, so that the sealing head 340 just blocks the ends of the water-cooled quick-change joint 500.

[0022] In the present utility model, if Figure 3As shown, the second sealing tool 400 includes a second helium cover 410. The top of the second helium cover 410 has a second through hole for inserting the water-cooled quick-change connector 500, and a sealing unit is also provided between the second helium cover 410 and the water-cooled quick-change connector 500. The sealing unit can adopt an inflatable sealing ring so that the water-cooled quick-change connector 500 can be smoothly inserted into the second through hole. After the water-cooled quick-change connector 500 is inserted, high-pressure air is filled into the inflatable sealing ring so that the inflatable sealing ring can seal the water-cooled quick-change connector 500 radially.

[0023] In the utility model, the bottom of the second helium hood 410 is fixedly connected to the base plate 200, and an air flow channel 210 is also provided in the base plate 200, one end of the air flow channel 210 is connected to the bottom of the water-cooled quick-change connector 500, and the other end of the air flow channel 210 is connected to the vacuum box 100.

[0024] In the present invention, the first helium hood 310 and the second helium hood 410 are further connected to a helium filling unit. When leak testing the water-cooled quick-change joint 500, firstly, the water-cooled quick-change joint 500 is placed in the first sealing fixture 300 and the second sealing fixture 400, so that the upper and lower ends of the water-cooled quick-change joint 500 are respectively located in independent leak testing spaces. Then, the door of the vacuum box 100 is closed, and the equipment is started. The helium filling unit injects helium into the first sealing fixture 300 and the second sealing fixture 400 at the same time. Since the air flow channel 210 is connected to the bottom of the water-cooled quick-change joint 500, and the top of the water-cooled quick-change joint 500 is blocked by the sealing head 340, if there is a leakage point at the upper end or / and the lower end of the water-cooled quick-change joint 500, helium will enter the air flow channel 210 through the inner tube part of the water-cooled quick-change joint 500, and then enter the vacuum box 100. At this time, the helium detection equipment will detect the leakage rate value of the water-cooled quick-change joint 500. If the leakage rate value is greater than the set threshold value, it means that the water-cooled quick-change joint 500 is unqualified, otherwise it means that the water-cooled quick-change joint 500 is qualified.

[0025] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

[0026] Except for the technical features described in the specification, the other technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present utility model, the other technical features will not be described in detail here.

Claims

1. A leak detection tool for a water-cooled quick-change joint, characterized in that: It comprises a vacuum box and a bottom plate, a first sealing tool and a second sealing tool arranged inside the vacuum box, wherein the first sealing tool and the second sealing tool are respectively matched with two ends of the water-cooled quick-change joint; The first sealing tool comprises a first helium cover, a sealing plate and a supporting unit. The first helium cover is installed in the vacuum box through a lifting mechanism. The sealing plate is adapted to the first helium cover, so that when the first helium cover is lowered to the sealing plate position through the lifting mechanism, the bottom of the first helium cover is sealed and docked with the sealing plate. A first through hole is provided in the sealing plate, and the first through hole is adapted to the water-cooled quick-change joint. The second sealing tool comprises a second helium cover, the top of the second helium cover has a second through hole for inserting a water-cooled quick-change joint, and a sealing unit is further provided between the second helium cover and the water-cooled quick-change joint; The bottom of the second helium cover is fixedly connected to the bottom plate, and an air flow channel is also provided in the bottom plate, one end of the air flow channel is connected to the bottom of the water-cooled quick-change joint, and the other end of the air flow channel is connected to the vacuum box; The first helium cover and the second helium cover are also connected with a helium filling unit.

2. The water-cooled quick-change joint leak detection tool according to claim 1, characterized in that: The support unit comprises symmetrically distributed pads, the pads are fixedly mounted on the surface of the bottom plate, and the sealing plates are fixedly mounted on the tops of the pads.

3. The leak detection tool for water-cooled quick-change joints according to claim 2 is characterized in that: The inner top of the first helium cover is connected to a sealing head via a spring, and the sealing head is coaxially distributed with the first through hole; The sealing head is a cylindrical column, and the diameter of the sealing head is matched with the inner diameter of the water-cooled quick-change joint, so that the sealing head just blocks the end of the water-cooled quick-change joint.

4. The leak detection tool for water-cooled quick-change joints according to claim 3 is characterized in that: The sealing unit is an inflatable sealing ring.

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