Sealing mechanism

Abstract

The utility model discloses a sealing mechanism, which relates to the field of helium leak detection equipment and comprises a vacuum leak detection box body, a plurality of protrusions are arranged on the inner bottom wall of the vacuum leak detection box body, battery liquid cooling plates are arranged on the protrusions, and positioning units capable of pressing the battery liquid cooling plates on the surfaces of the protrusions are arranged on the edges of the battery liquid cooling plates. And one end of the battery liquid cooling plate is provided with two pipeline interfaces protruding upwards. And two sealing joints matched with the pipeline interfaces are arranged in the vacuum leak detection box body. According to the utility model, in the process of placing the battery liquid cooling plate in the vacuum leak detection box body to carry out helium leak detection operation, the adjustable positioning unit can tightly press the edge of the battery liquid cooling plate on the premise of not influencing the placing operation of the battery liquid cooling plate, so that the battery liquid cooling plate is tightly attached to the convex part in a stable state. And then, the sealing joint can be moved to the pipeline interface for butt joint, so that the closed state of the battery liquid cooling plate is kept, and the accuracy of detection operation is improved.

Description

Technical Field

[0001] This utility model relates to the field of helium leak detection equipment, and in particular to a sealing mechanism. Background Technology

[0002] In helium leak detection, a vacuum chamber provides a controlled, isolated environment to isolate the object being tested. In practice, the workpiece (such as a sealed container, pipe, or component) must be placed inside the vacuum chamber, isolated from the external environment, to prevent external air, contaminants, or interfering gases from affecting the test results. The vacuum chamber prevents helium diffusion; if the object leaks, the helium is confined within the vacuum chamber, facilitating focused detection and preventing helium from escaping into the external environment, thus avoiding waste or safety hazards. Specifically, during helium testing, the pressure inside the chamber is reduced to an extremely low level by evacuating, creating a significant pressure difference between the inside and outside of the object. If a leak occurs, the helium will flow rapidly from the high-pressure side (inside the object) to the low-pressure side (vacuum chamber), improving the visibility of the leak path.

[0003] Existing liquid cooling plates, due to their thickness directly affecting the heat transfer path from the battery to the coolant, mostly use thinner plates to reduce thermal resistance and accelerate heat transfer. However, during helium leak testing of battery liquid cooling plates, to maintain a sealed environment, the interfaces of the cooling pipes within the plate need to be sealed. Because the plate is thin, its stability cannot be guaranteed when placed in a vacuum chamber. Therefore, misalignment between the sealing structure and the cooling pipe interfaces is prone to occur, often requiring manual adjustment, thus affecting the efficiency of the testing operation. Utility Model Content

[0004] To address the aforementioned problems, this application provides a sealing mechanism.

[0005] To achieve the above objectives, this application provides the following technical solution: a sealing mechanism, including a vacuum leak detection chamber, the inner bottom wall of the vacuum leak detection chamber is provided with a plurality of protrusions, a battery liquid cooling plate is provided on the protrusions, a positioning unit is provided at the edge of the battery liquid cooling plate to press it against the surface of the protrusions, and one end of the battery liquid cooling plate is provided with two upward protruding pipe interfaces.

[0006] The vacuum leak detection chamber is equipped with two sealing joints that are compatible with the pipe interface. Each sealing joint has a transmission rod at the end away from the pipe interface. One end of the transmission rod extends through the wall of the vacuum leak detection chamber to its outer side. The vacuum leak detection chamber is equipped with two sets of cylinders that can control the movement of the transmission rod.

[0007] Furthermore, the vacuum leak detection chamber is equipped with a limiting seat, and the limiting seat has a channel that can accommodate the movement of the sealing joint.

[0008] Furthermore, the positioning unit includes two pressure strips symmetrically distributed at the edge of the battery liquid cooling plate. Each pressure strip is connected to a rotating shaft via a connecting rod on the side near the inner wall of the vacuum leak detection chamber. Both rotating shafts are installed on the vacuum leak detection chamber, and one end of each rotating shaft protrudes to the outside of the vacuum leak detection chamber.

[0009] Furthermore, the end of the rotating shaft that protrudes to the outside of the vacuum leak detection box is respectively provided with a first drive gear and a second drive gear. A first linkage rack is meshed above the first drive gear, and a second linkage rack is meshed above the second drive gear. The first linkage rack and the second linkage rack are at the same height. When the first linkage rack and the second linkage rack move in opposite directions, the first drive gear and the second drive gear rotate synchronously.

[0010] Furthermore, the second linkage rack has an extension rack at one end near the first linkage rack, the extension rack extending directly below the first linkage rack, the extension rack and the first linkage rack meshing with the same power gear, the power gear being located in the relative space between the extension rack and the first linkage rack, the vacuum leak detection box having a drive motor outside that can control the rotation of the power gear, when the power gear rotates, the extension rack and the first linkage rack move in opposite directions.

[0011] Furthermore, the vacuum leak detection box is provided with two positioning guide rails that are parallel to each other from top to bottom. The two positioning guide rails are respectively connected to the first linkage rack and the extended rack. When the first linkage rack and the extended rack move in opposite directions, the first linkage rack and the extended rack move along the distribution direction of the positioning guide rails.

[0012] In summary, the technical effects and advantages of this utility model are as follows:

[0013] In this invention, during helium leak detection operations where a battery liquid cooling plate is placed inside a vacuum leak detection chamber, an adjustable positioning unit can press the edges of the battery liquid cooling plate firmly without affecting its placement. This ensures the battery liquid cooling plate is stably and tightly fitted to the protrusion. Subsequently, the sealing joint can be moved to align with the pipe interface, maintaining the battery liquid cooling plate's airtightness and improving the accuracy of the detection operation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the second-view structure of the present invention.

[0017] Figure 3 This utility model Figure 2 Enlarged structural diagram at point a.

[0018] Figure 4 This is a schematic diagram of the third-view structure of this utility model.

[0019] Figure 5 This utility model Figure 4 Enlarged structural diagram at point b.

[0020] In the diagram: 1. Vacuum leak detection chamber; 2. Battery liquid cooling plate; 21. Pipe interface; 3. Sealing joint; 4. Transmission rod; 5. Cylinder; 6. Limit seat; 7. Pressure bar; 8. Connecting rod; 9. Rotating shaft; 10. First drive gear; 11. Second drive gear; 12. First linkage rack; 13. Second linkage rack; 14. Extension rack; 15. Power gear; 16. Drive motor; 17. Positioning guide rail. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: Reference Figure 1-4 The sealing mechanism shown includes a vacuum leak detection chamber 1. The inner bottom wall of the vacuum leak detection chamber 1 is provided with multiple protrusions. A battery liquid cooling plate 2 is provided on the protrusions. The edge of the battery liquid cooling plate 2 is provided with a positioning unit that can press it against the surface of the protrusions. One end of the battery liquid cooling plate 2 is provided with two upward protruding pipe interfaces 21.

[0023] During the helium leak detection operation performed inside the vacuum leak detection chamber 1, the positioning unit can press the edge of the battery liquid cooling plate 2 tightly, so that the battery liquid cooling plate 2 is closely attached to the protrusion, and the battery liquid cooling plate 2 is in a stable state inside the vacuum leak detection chamber 1.

[0024] The vacuum leak detection chamber 1 is equipped with two sealing joints 3 that are compatible with the pipe interface 21. The end of the sealing joint 3 away from the pipe interface 21 is equipped with a transmission rod 4. One end of the transmission rod 4 extends through the wall of the vacuum leak detection chamber 1 to its outside. The vacuum leak detection chamber 1 is equipped with two sets of cylinders 5 that can control the movement of the transmission rod 4.

[0025] Before the helium leak detection operation, cylinder 5 operates, and under the action of the transmission connection, the sealing joint 3 moves to align with the pipe interface 21, maintaining the airtight state of the battery liquid cooling plate 2, thus ensuring the smooth implementation of the helium leak detection operation. This improves the accuracy of the detection operation during the helium leak detection process.

[0026] like Figure 5 As shown, in order to maintain the stability of the sealing joint 3 during movement, a limiting seat 6 is provided inside the vacuum leak detection chamber 1, and the limiting seat 6 has a channel that can accommodate the movement of the sealing joint 3.

[0027] like Figure 2 , Figure 3 As shown, the positioning unit includes two pressure strips 7 symmetrically distributed at the edge of the battery liquid cooling plate 2. Each pressure strip 7 has a rotating shaft 9 connected to its side near the inner wall of the vacuum leak detection chamber 1 via a connecting rod 8. Both rotating shafts 9 are mounted on the vacuum leak detection chamber 1, with one end of each shaft protruding outside the chamber 1. When the two rotating shafts 9 rotate, the pressure strips 7 can rotate inside the vacuum leak detection chamber 1, leaving space for the battery liquid cooling plate 2 to be inserted into its protrusion, facilitating subsequent pressure positioning operations.

[0028] Furthermore, such as Figure 2 , Figure 3 As shown, the end of the rotating shaft 9 exposed to the outside of the vacuum leak detection box 1 is provided with a first drive gear 10 and a second drive gear 11. A first linkage rack 12 is meshed above the first drive gear 10, and a second linkage rack 13 is meshed above the second drive gear 11. The first linkage rack 12 and the second linkage rack 13 are at the same height. When the first linkage rack 12 and the second linkage rack 13 move in opposite directions, the first drive gear 10 and the second drive gear 11 rotate synchronously in opposite directions.

[0029] During the rotation, the connecting rod 8 enables the rotating shaft 9 to drive the pressure strip 7 to rotate, thereby achieving the purpose of positioning the battery liquid cooling plate 2, maintaining the stability of the battery liquid cooling plate 2 when it undergoes helium leak detection inside the vacuum leak detection chamber 1, ensuring that the sealing joint 3 can accurately connect with the pipe interface 21, and improving the accuracy of the helium leak detection operation.

[0030] Furthermore, by using the movable pressure strip 7 to perform the positioning operation on the battery liquid cooling plate 2, the deformation of the thin battery liquid cooling plate 2 during the pressure positioning operation can be avoided. While ensuring the positioning effect, it also has a protective effect on the battery liquid cooling plate 2, effectively avoiding damage to the battery liquid cooling plate 2 during the pressure positioning operation.

[0031] like Figure 2 , Figure 3 As shown, the second linkage rack 13 has an extension rack 14 at one end near the first linkage rack 12. The extension rack 14 extends directly below the first linkage rack 12. The extension rack 14 and the first linkage rack 12 are meshed with the same power gear 15. The power gear 15 is located in the relative space between the extension rack 14 and the first linkage rack 12. A drive motor 16 that can control the rotation of the power gear 15 is provided outside the vacuum leak detection box 1. When the power gear 15 rotates, the extension rack 14 and the first linkage rack 12 move in opposite directions.

[0032] Since the second linkage rack 13, which is connected to the extension rack 14, meshes directly above the second drive gear 11, when the extension rack 14 and the first linkage rack 12 move in opposite directions, the meshing force between the second linkage rack 13 and the second drive gear 11, and between the first linkage rack 12 and the first drive gear 10, can cause the first drive gear 10 and the second drive gear 11 to rotate in opposite directions, thereby driving the two rotating shafts 9 to rotate in opposite directions.

[0033] like Figure 3 As shown, the vacuum leak detection box 1 is provided with two positioning guide rails 17 arranged in parallel from top to bottom. The two positioning guide rails 17 are respectively connected to the first linkage rack 12 and the extension rack 14. When the first linkage rack 12 and the extension rack 14 move in opposite directions, the first linkage rack 12 and the extension rack 14 move along the distribution direction of the positioning guide rails 17.

[0034] The positioning guide rail 17 is designed to maintain the stability of the first linkage rack 12 and the extension rack 14 during movement, preventing them from shifting or falling off, and ensuring that the pressure bar 7 can rotate smoothly to perform the positioning operation.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sealing mechanism, comprising a vacuum leak detection chamber (1), characterized in that: The inner bottom wall of the vacuum leak detection box (1) is provided with multiple protrusions, and a battery liquid cooling plate (2) is provided on the protrusions. The edge of the battery liquid cooling plate (2) is provided with a positioning unit that can press it against the surface of the protrusions, and one end of the battery liquid cooling plate (2) is provided with two upward protruding pipe interfaces (21). The vacuum leak detection chamber (1) is provided with two sealing joints (3) that are compatible with the pipe interface (21). The sealing joints (3) are provided with transmission rods (4) at the ends away from the pipe interface (21). One end of the transmission rods (4) extends through the wall of the vacuum leak detection chamber (1) to its outside. The vacuum leak detection chamber (1) is provided with two sets of cylinders (5) that can control the movement of the transmission rods (4).

2. The sealing mechanism according to claim 1, characterized in that: The vacuum leak detection box (1) is provided with a limiting seat (6), and the limiting seat (6) is provided with a channel that can accommodate the movement of the sealing joint (3).

3. The sealing mechanism according to claim 1, characterized in that: The positioning unit includes two pressure strips (7) symmetrically distributed at the edge of the battery liquid cooling plate (2). The side of the pressure strip (7) near the inner wall of the vacuum leak detection box (1) is connected to a rotating shaft (9) by a connecting rod (8). Both rotating shafts (9) are installed on the vacuum leak detection box (1), and one end of each rotating shaft (9) protrudes to the outside of the vacuum leak detection box (1).

4. The sealing mechanism according to claim 3, characterized in that: The rotating shaft (9) is provided with a first drive gear (10) and a second drive gear (11) at one end exposed to the outside of the vacuum leak detection box (1). A first linkage rack (12) is meshed above the first drive gear (10), and a second linkage rack (13) is meshed above the second drive gear (11). The first linkage rack (12) and the second linkage rack (13) are at the same height. When the first linkage rack (12) and the second linkage rack (13) move in opposite directions, the first drive gear (10) and the second drive gear (11) rotate synchronously.

5. The sealing mechanism according to claim 4, characterized in that: The second linkage rack (13) has an extension rack (14) at one end near the first linkage rack (12). The extension rack (14) extends to directly below the first linkage rack (12). The extension rack (14) and the first linkage rack (12) are meshed with the same power gear (15). The power gear (15) is located in the relative space between the extension rack (14) and the first linkage rack (12). The vacuum leak detection box (1) is equipped with a drive motor (16) that can control the rotation of the power gear (15). When the power gear (15) rotates, the extension rack (14) and the first linkage rack (12) move in opposite directions.

6. The sealing mechanism according to claim 5, characterized in that: The vacuum leak detection box (1) is provided with two positioning guide rails (17) arranged in parallel from top to bottom. The two positioning guide rails (17) are connected to the first linkage rack (12) and the extension rack (14) respectively. When the first linkage rack (12) and the extension rack (14) move in opposite directions, the first linkage rack (12) and the extension rack (14) move along the distribution direction of the positioning guide rails (17).

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