High-pressure airtightness detection tool for water-cooling plate

Abstract

The utility model discloses a water-cooling plate high-pressure airtightness detection tool, which relates to the technical field of cavity airtightness detection and comprises an airtightness detection head, an air pressure source, a pressure sensor and a U-shaped sealing ring. The gas detection head is provided with a detection port and a plurality of sealing ports, the detection port is in sliding fit with the gas inlet, the sealing ports are in sliding fit with the gas outlet, and the U-shaped sealing rings are arranged in the detection port and the corresponding sealing ports respectively. An inverted-cone-shaped sealing block is fixedly arranged in the middle of the U-shaped sealing ring. The U-shaped sealing ring and the inverted-cone-shaped sealing block are integrally formed. The U-shaped sealing ring and the inverted-cone-shaped sealing block are both made of silica gel materials, and good elasticity and sealing performance are guaranteed. By adopting the two self-locking sealing surface structures consisting of the U-shaped sealing rings and the inverted conical sealing blocks, the dependence on a high-pressure hydraulic cylinder is obviously reduced, so that the overall manufacturing cost is reduced. And due to the selection of the silica gel material, the material cost is controlled while the sealing performance is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cavity air tightness detection, in particular to a high-pressure air tightness detection tool for a water-cooling plate. Background Art

[0002] With the rapid development of the new energy vehicle industry, direct battery cooling technology offers the advantages of simplicity, efficiency, and low cost. By utilizing a refrigerant with a low evaporation temperature, direct battery cooling achieves efficient cooling of the battery pack, effectively reducing the risk of thermal runaway and improving the safety and endurance of new energy vehicles. However, direct cooling technology also faces the potential safety hazard of refrigerant leakage in practical applications, making refrigerant sealing and detection critical to its development.

[0003] In direct cooling systems, the water-cooling plate acts as the heat exchange medium between the refrigerant and the battery pack, and its sealing performance is directly related to the safety and reliability of the system. This is especially true under high-pressure conditions. For example, some direct cooling projects require that the water-cooling plate's sealing leakage value meet strict standards at a pressure of 2 MPa. This places higher demands on the sealing testing of the water-cooling plate.

[0004] Traditional low-pressure rapid sealing tools, such as internal expansion and tensioning, external compression, and end-face compression, are inadequate for high-pressure environments exceeding 2 MPa. These methods can easily cause deformation of the sealing surface under high pressure, leading to leakage.

[0005] In the existing technology, high-pressure hydraulic cylinder compression is usually adopted to achieve the sealing of the water-cooled plate under a pressure of 2Mpa. Although the use of high-pressure hydraulic cylinder compression can ensure the sealing performance, this method is not only expensive to use, but also has high requirements on the material quality and processing accuracy of the sealing surface, while increasing the complexity and maintenance difficulty of the system. Utility Model Content

[0006] The purpose of the utility model is to provide a high-pressure airtightness detection tool for a water-cooled plate, so as to solve the technical problems in the prior art of high-pressure hydraulic cylinder compaction, such as high material quality requirements for the sealing surface of the product to be tested and high cost of using the high-pressure hydraulic cylinder.

[0007] The technical problem to be solved by the present invention can be achieved through the following technical solutions: a high-pressure airtightness detection tool for a water-cooled plate, which is used to perform airtightness detection on the product to be tested, comprising a workbench, a pressing mechanism, a supporting mechanism and a detecting mechanism, wherein the pressing mechanism and the supporting mechanism are fixedly arranged at the top and bottom of the workbench respectively, and the supporting mechanism is located below the pressing mechanism, and the detecting mechanism comprises an air detection head, an air pressure source, a pressure sensor and a U-shaped sealing ring, the product to be tested is provided with an air inlet and several air outlets that are interconnected, the air detection head is fixedly connected to the output end of the pressing mechanism, the air detection head is provided with a detection port and several sealing ports that are respectively slidably matched with the air inlet and the air outlet, the detection port is connected to the air pressure source, the pressure sensor is used to monitor the pressure changes in the detection port, the U-shaped sealing ring is provided with several pieces, and are respectively fixedly arranged in the detection port and the corresponding sealing port, and the U-shaped sealing ring is provided with a first through hole connected to the detection port.

[0008] As a further solution of the present invention: an inverted cone-shaped sealing block is fixedly provided in the middle of the U-shaped sealing ring, and the inverted cone-shaped sealing block is provided with a second through hole connected to the first through hole.

[0009] As a further solution of the present invention: the U-shaped sealing ring and the inverted cone-shaped sealing block are integrally formed.

[0010] As a further solution of the present invention: the U-shaped sealing ring and the inverted cone-shaped sealing block are both made of silicone material.

[0011] As a further solution of the present invention: the pressing mechanism includes a hydraulic cylinder, the hydraulic cylinder is fixedly connected to the top of the workbench, and the output end of the hydraulic cylinder is fixedly connected to the air inspection head.

[0012] As a further solution of the present invention: the support mechanism includes a positioning fixture for supporting and limiting the product to be tested, and the positioning fixture is fixedly connected to the bottom of the workbench and is located below the output end of the hydraulic cylinder.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The dual self-locking sealing surface structure consisting of a U-shaped sealing ring and an inverted conical sealing block significantly reduces the reliance on high-pressure hydraulic cylinders, thereby reducing overall manufacturing costs. At the same time, the choice of silicone material also ensures sealing performance while controlling material costs.

[0015] 2. The two-sealing surface structure greatly enhances the reliability and stability of the seal, effectively preventing gas leakage even at a high pressure of 2 MPa, and improving the accuracy of the test results. In addition, the use of complex equipment such as high-pressure hydraulic cylinders is reduced, making the entire detection system structure simpler, reducing system complexity and maintenance difficulty.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a structural diagram of a water-cooled plate high-pressure airtightness testing tool.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the gas detection head in the utility model.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the product to be tested in the utility model.

[0021] Figure 4 It is a structural sectional view of the gas detection head in the utility model.

[0022] Figure 5 It is a structural sectional view of the product to be tested in the utility model.

[0023] Reference numerals include:

[0024] 1. Workbench; 2. Pressing mechanism; 3. Support mechanism; 4. Detection mechanism; 41. Air detection head; 411. Detection port; 412. Sealing port; 42. U-shaped sealing ring; 421. First through hole; 43. Inverted conical sealing block; 431. Second through hole; 5. Product to be tested; 51. Air inlet; 52. Air outlet. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figures 1 to 5The figure shows a high-pressure airtightness test fixture for a water-cooled panel, used for performing airtightness tests on a product 5 to be tested. The fixture comprises a workbench 1, a pressing mechanism 2, a supporting mechanism 3, and a testing mechanism 4. The pressing mechanism 2 and the supporting mechanism 3 are fixedly mounted on the top and bottom of the workbench 1, respectively, with the supporting mechanism 3 located below the pressing mechanism 2, forming a stable testing platform. The product 5 to be tested is a water-cooled panel.

[0027] The detection mechanism 4 includes an air detection head 41, an air pressure source, a pressure sensor, and a U-shaped sealing ring 42. The product to be tested 5 is provided with an air inlet 51 and several air outlets 52 that are interconnected. The air detection head 41 is fixedly connected to the output end of the pressing mechanism 2. The air detection head 41 is provided with a detection port 411 and several sealing ports 412 that slide with the air inlet 51 and the air outlet 52, respectively. The detection port 411 is connected to the air pressure source. The pressure sensor is used to monitor the pressure changes in the detection port 411. There are several U-shaped sealing rings 42, which are respectively fixed in the detection port 411 and the corresponding sealing ports 412. The U-shaped sealing ring 42 is provided with a first through hole 421 that is connected to the detection port 411. An inverted conical sealing block 43 is fixedly provided in the middle of the U-shaped sealing ring 42. The inverted conical sealing block 43 is provided with a second through hole 431 that is connected to the first through hole 421. When the air pressure source inflates the detection port 411 , the air passes through the first through hole 421 and the second through hole 431 and enters the interior of the product to be detected 5 .

[0028] The U-shaped sealing ring 42 and the inverted conical sealing block 43 are integrally formed. The U-shaped sealing ring 42 and the inverted conical sealing block 43 are both made of silicone material to ensure good elasticity and sealing performance.

[0029] Specifically, when the downward pressing mechanism 2 is activated, pushing the air inspection head 41 downward, the inclined surface of the inverted conical sealing block 43 contacts and gradually presses against the air inlet 51 or air outlet 52 of the product to be tested 5. Due to the inverted conical structure, the sealing effect gradually increases with increasing pressure, forming a first reliable sealing surface.

[0030] At the same time, the end surface of the air inlet 51 or the air outlet 52 contacts and presses against the annular surface of the U-shaped sealing ring 42, further enhancing the sealing effect and forming a second sealing surface. These two sealing surfaces work together to ensure that gas does not leak during the detection process.

[0031] The air pressure source inflates the interior of the product 5 to be tested through the detection port 411, and the pressure sensor monitors the pressure changes in the detection port 411 in real time. If there is a leak inside the product, the pressure sensor will capture the pressure drop signal, thereby determining whether the product's airtightness meets the requirements.

[0032] By adopting a two-stage self-locking sealing surface structure consisting of a U-shaped sealing ring 42 and an inverted conical sealing block 43, the reliance on high-pressure hydraulic cylinders is significantly reduced, thereby reducing overall manufacturing costs. Furthermore, the choice of silicone material ensures sealing performance while controlling material costs. Furthermore, the two-stage sealing surface structure greatly enhances the reliability and stability of the seal, effectively preventing gas leakage even at a relatively high pressure of 2 MPa, thereby improving the accuracy of the test results. Furthermore, the use of complex equipment such as high-pressure hydraulic cylinders is reduced, making the entire detection system structure simpler, reducing system complexity and maintenance difficulty.

[0033] refer to Figure 1 As shown, in some specific embodiments, the pressing mechanism 2 includes a hydraulic cylinder, which is fixedly connected to the top of the workbench 1, and the output end of the hydraulic cylinder is fixedly connected to the gas inspection head 41. The supporting mechanism 3 includes a positioning fixture for supporting and limiting the product to be tested 5. The positioning fixture is fixedly connected to the bottom of the workbench 1 and is located below the output end of the hydraulic cylinder.

[0034] Specifically, the product to be tested (5) is placed on a positioning fixture to ensure accurate and secure positioning. The hydraulic cylinder is activated, and its output pushes the pneumatic inspection head (41) downward. As the pneumatic inspection head (41) descends, the U-shaped sealing ring (42) and the inverted conical sealing block (43) gradually approach the air inlet (51) and outlet (52) of the product to be tested (5).

[0035] When the inclined surface of the inverted conical sealing block 43 contacts the air inlet 51 or air outlet 52, the hydraulic cylinder pushes the sealing block gradually against the interface, forming a first sealing surface. Subsequently, the end surface of the air inlet 51 or air outlet 52 contacts and presses against the annular surface of the U-shaped sealing ring 42, forming a second sealing surface.

[0036] After sealing is complete, the air pressure source inflates the interior of the product under test 5 through the test port 411. The pressure sensor monitors the pressure changes within the test port 411 in real time to determine the product's airtightness. After the test is complete, the hydraulic cylinder retracts, the air testing head 41 rises, and the U-shaped sealing ring 42 and the inverted conical sealing block 43 separate from the product under test 5, completing one test cycle.

[0037] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of the embodiments of this solution will now be described in conjunction with specific application scenarios:

[0038] During actual use, the product under test 5 is placed in a positioning fixture on the support mechanism 3. This ensures that the product under test 5 does not move or tilt during testing, thereby ensuring test accuracy. The hydraulic cylinder is activated, and its output begins to push the air inspection head 41 downward. As the air inspection head 41 gradually descends, the U-shaped sealing ring 42 and the inverted conical sealing block 43 gradually approach the air inlet 51 and air outlet 52 of the product under test 5.

[0039] When the inclined surface of the inverted cone-shaped sealing block 43 contacts the edge of the air inlet 51 or air outlet 52, the hydraulic cylinder's continued push gradually compresses the sealing block against the interface, forming a primary sealing surface. This utilizes the self-locking principle of the inverted cone, and the sealing effect gradually increases with increasing pressure. Simultaneously, the end face of the air inlet 51 or air outlet 52 contacts and compresses the annular surface of the U-shaped sealing ring 42, forming a secondary sealing surface. These two sealing surfaces work together to ensure that gas does not leak from the interface during the test process.

[0040] After sealing is complete, the air pressure source begins to inflate the interior of the product under test 5 through the detection port 411. At this point, the pressure sensor monitors the pressure changes within the detection port 411 in real time. If a leak exists within the product under test 5, the pressure sensor will detect a pressure drop. The speed and magnitude of the pressure drop can be used to preliminarily determine the severity of the leak.

[0041] After the test is completed, the hydraulic cylinder retracts, the pneumatic testing head 41 rises, the U-shaped sealing ring 42 and the inverted cone-shaped sealing block 43 are separated from the product to be tested 5, and a test cycle is completed.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A high-pressure airtightness testing tool for a water-cooled plate, used for performing airtightness testing on a product to be tested (5), comprising a workbench (1), a pressing mechanism (2) and a supporting mechanism (3), wherein the pressing mechanism (2) and the supporting mechanism (3) are fixedly arranged on the top and bottom of the workbench (1), respectively, and the supporting mechanism (3) is located below the pressing mechanism (2), and is characterized in that: Also includes: A detection mechanism (4) comprising an air detection head (41), an air pressure source, a pressure sensor and a U-shaped sealing ring (42); the product to be tested (5) is provided with an air inlet (51) and a plurality of air outlets (52) that are interconnected; the air detection head (41) is fixedly connected to the output end of the pressing mechanism (2); the air detection head (41) is provided with a detection port (411) and a plurality of sealing ports (412) that are respectively slidably matched with the air inlet (51) and the air outlet (52); the detection port (411) is connected to the air pressure source; the pressure sensor is used to monitor the pressure change in the detection port (411); a plurality of U-shaped sealing rings (42) are provided and are respectively fixedly arranged in the detection port (411) and the corresponding sealing ports (412); the U-shaped sealing ring (42) is provided with a first through hole (421) that is connected to the detection port (411).

2. The high-pressure airtightness detection tool for a water-cooled plate according to claim 1, characterized in that: An inverted cone-shaped sealing block (43) is fixedly provided in the middle of the U-shaped sealing ring (42), and the inverted cone-shaped sealing block (43) is provided with a second through hole (431) connected to the first through hole (421).

3. The high-pressure airtightness detection tool for a water-cooled plate according to claim 2, characterized in that: The U-shaped sealing ring (42) and the inverted conical sealing block (43) are integrally formed.

4. The high-pressure airtightness detection tool for a water-cooled plate according to claim 2, characterized in that: The U-shaped sealing ring (42) and the inverted cone-shaped sealing block (43) are both made of silicone material.

5. The high-pressure airtightness detection tool for a water-cooled plate according to claim 1, characterized in that: The pressing mechanism (2) comprises a hydraulic cylinder, the hydraulic cylinder is fixedly connected to the top of the workbench (1), and the output end of the hydraulic cylinder is fixedly connected to the gas detection head (41).

6. The high-pressure airtightness detection tool for a water-cooled plate according to claim 5, characterized in that: The support mechanism (3) includes a positioning jig for supporting and limiting the product (5) to be tested; the positioning jig is fixedly connected to the bottom of the workbench (1) and is located below the output end of the hydraulic cylinder.

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