Low-temperature heat dissipation water tank testing fixture

Abstract

This utility model relates to the field of low-temperature cooling water tank manufacturing technology and discloses a low-temperature cooling water tank inspection fixture. The fixture includes a base, a limiting unit, and a detection unit. The limiting unit is mounted on the base and limits the position of the low-temperature cooling water tank to be inspected. The detection unit includes multiple extensions and multiple detection elements. The extensions are mounted on the limiting unit and extend inward in the horizontal direction. Each extension corresponds to a key hole in a qualified low-temperature cooling water tank. The extensions are positioned above their respective key holes and also have detection holes. These detection holes correspond vertically to the key holes. The detection elements are inserted into the detection holes and their corresponding key holes in the low-temperature cooling water tank to be inspected, enabling rapid and accurate detection of whether the positional accuracy of the holes in the low-temperature cooling water tank meets the qualification standards.

Description

Technical Field

[0001] This utility model relates to the field of low-temperature heat dissipation water tank manufacturing technology, and in particular to a low-temperature heat dissipation water tank inspection tool. Background Technology

[0002] The low-temperature radiator is a crucial component of the cooling system, typically consisting of an inlet chamber, an outlet chamber, main fins, and a radiator core. Its function is to absorb heat from the cylinder block and prevent engine overheating. Using water as a heat carrier, the coolant flows within the radiator core, while air passes outside, achieving heat exchange and dissipating the coolant's heat into the air, maintaining the engine at a suitable operating temperature. Key positions on the low-temperature radiator include the inlet, outlet, water level sensor, water temperature sensor, and drain hole. Inaccurate placement of the inlet and outlet may obstruct coolant flow, affecting heat dissipation and potentially causing engine overheating. Inaccurate placement of the water level and temperature sensors will distort the monitoring data, failing to accurately reflect the actual condition of the radiator and potentially leading to engine malfunctions. An improperly positioned or incompatible drain hole will prevent the effective discharge of impurities and wastewater, affecting coolant quality and the radiator's normal operation. Inaccurate placement of the overflow pipe-related ports may cause overflow failure, resulting in radiator leaks or pressure imbalances.

[0003] Currently, staff typically rely on visual inspection and experience to check the accuracy of each hole. However, manual visual inspection depends on the inspector's subjective judgment, and its visual resolution is limited, making it difficult to identify minute deviations. Furthermore, manual visual inspection lacks quantitative standards and can only rely on experience for estimation, failing to provide precise numerical results. This leads to problems such as performance failure, poor assembly, quality risks, and reduced production efficiency in low-temperature cooling water tanks. For large-scale inspections, manual visual inspection requires a significant amount of time and manpower, resulting in low efficiency and making it unsuitable for the needs of modern large-scale production.

[0004] Therefore, there is an urgent need for a dustproof bag for a low-temperature cooling water tank inspection tool, which can solve the problems of low accuracy and low reliability of manual visual inspection, and realize rapid and accurate inspection of the low-temperature cooling water tank to be inspected. Utility Model Content

[0005] The purpose of this invention is to provide a dustproof bag for a low-temperature cooling water tank inspection tool, which can solve the problems of low accuracy and low reliability of manual visual inspection, and realize rapid and accurate inspection of the low-temperature cooling water tank to be inspected.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] A low-temperature cooling water tank inspection fixture is used to inspect whether the positions of key holes in a low-temperature cooling water tank are correctly drilled. The low-temperature cooling water tank inspection fixture includes:

[0008] A base, which includes a support base;

[0009] A limiting unit is provided on the circumferential edge of the support base and limits the horizontal displacement of the low-temperature heat dissipation tank to be tested.

[0010] The detection unit includes multiple extensions and multiple detection elements. The multiple extensions are disposed on the limiting unit and extend inward in the horizontal direction. The extensions are corresponding to the key holes of the qualified low-temperature heat dissipation water tank. The extensions are disposed above the corresponding key holes. The extensions are also provided with detection holes. The detection holes correspond one-to-one with the key holes in the vertical direction. The detection elements are used to be inserted into the detection holes and the corresponding key holes of the low-temperature heat dissipation water tank to be tested.

[0011] As an optional solution for the low-temperature cooling water tank fixture, the limiting unit includes:

[0012] A limiting frame is provided on the support base, and the internal contour dimensions and shape of the limiting frame are the same as the external contour dimensions and shape of the qualified low-temperature heat dissipation water tank.

[0013] Multiple columns are arranged at intervals around the center of the limiting frame along the outline of the limiting frame. The columns extend in the vertical direction. Multiple columns are set on the outer side of the key hole in the horizontal direction. The number and position of the columns correspond one-to-one with the key hole.

[0014] As an optional solution for the low-temperature heat dissipation water tank inspection fixture, the limiting unit also includes a first rotating shaft, which is simultaneously inserted into the bottom end of the column and the limiting frame, and the column can rotate relative to the support base around the first rotating shaft.

[0015] As an optional solution for the low-temperature cooling water tank inspection fixture, the limiting unit also includes a crossbeam that extends horizontally and is connected to multiple columns on the same side.

[0016] As an optional solution for the low-temperature heat dissipation water tank inspection fixture, the limiting unit also includes a limiting block, which is disposed on the limiting frame and on the outside of the low-temperature heat dissipation water tank to be inspected. The limiting block is stepped, with the stepped surface of the limiting block facing the low-temperature heat dissipation water tank to be inspected, and the low-temperature heat dissipation water tank to be inspected can be locked on the stepped surface.

[0017] As an optional solution for the low-temperature cooling water tank inspection fixture, the top of the limiting unit is rotatably connected to the extension, and the extension can be flipped relative to the base.

[0018] As an optional solution for the inspection fixture for the low-temperature cooling water tank, the inspection component includes a pin, which is used to be inserted from top to bottom into the corresponding inspection holes and the key holes to be inspected in the low-temperature cooling water tank to be inspected.

[0019] As an optional solution for the low-temperature cooling water tank inspection fixture, the inspection component also includes a handle, which is connected to the top of the pin.

[0020] And / or, the bottom end of the pin is tapered.

[0021] As an optional solution for the inspection fixture of the low-temperature heat dissipation water tank, the support base is a cubic frame composed of multiple hollow columns connected and spliced ​​by fasteners.

[0022] As an optional solution for the low-temperature cooling water tank inspection fixture, the base also includes casters, which are connected to the bottom of the support base.

[0023] The beneficial effects of this utility model are as follows:

[0024] This utility model proposes a low-temperature cooling water tank inspection fixture. The base includes a support base and a limiting unit disposed on the circumferential edge of the support base, limiting the horizontal displacement of the low-temperature cooling water tank to be inspected. The inspection unit includes multiple extensions and multiple inspection components. The extensions are disposed on the limiting unit and extend inward in the horizontal direction. The extensions are corresponding to the key holes of a qualified low-temperature cooling water tank and are positioned above the corresponding key holes. The extensions also have inspection holes, which correspond one-to-one with the key holes in the vertical direction. The inspection components are inserted into the inspection holes and the corresponding key holes of the low-temperature cooling water tank to be inspected, enabling precise detection of whether the position of the holes in the low-temperature cooling water tank to be inspected meets the qualification standard. Through the standardized limiting and hole-corresponding inspection structure, the efficiency and accuracy of the inspection process are achieved. Hole deviation can be intuitively judged, reducing manual inspection errors and time costs, improving inspection efficiency and reliability, ensuring that the quality of the key holes of the low-temperature cooling water tank meets the requirements, and providing a reliable guarantee for product quality control. Attached Figure Description

[0025] Figure 1 This is a first structural schematic diagram of the low-temperature heat dissipation water tank inspection fixture provided in this embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the second structure of the low-temperature heat dissipation water tank inspection fixture provided in this embodiment of the utility model;

[0027] Figure 3 This is a third structural schematic diagram of the low-temperature heat dissipation water tank inspection fixture provided in this embodiment of the utility model.

[0028] In the picture:

[0029] 1. Base; 11. Support base; 12. Casters;

[0030] 2. Limiting unit; 21. Limiting frame; 22. Column; 23. First rotating shaft; 24. Crossbeam; 25. Limiting block;

[0031] 3. Detection unit; 31. Extension; 32. Detection component; 321. Pin; 322. Handle. Detailed Implementation

[0032] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0033] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] This embodiment provides a low-temperature cooling water tank inspection fixture, used to inspect whether the positions of key holes in the low-temperature cooling water tank are correctly drilled, such as... Figures 1-3 As shown, in this embodiment, the low-temperature cooling water tank inspection fixture includes a base 1, a limiting unit 2, and a detection unit 3. The base 1 includes a support 11. The limiting unit 2 is disposed on the circumferential edge of the support 11 and limits the horizontal displacement of the low-temperature cooling water tank to be inspected. The detection unit 3 includes multiple extensions 31 and multiple detection elements 32. The multiple extensions 31 are disposed on the limiting unit 2 and extend inward in the horizontal direction. The extensions 31 are corresponding to the key holes of the qualified low-temperature cooling water tank and are disposed above the corresponding key holes. The extensions 31 are also provided with openings on the extensions 31. It has inspection holes, which correspond one-to-one with key holes in the vertical direction. The inspection component 32 is used to insert into the inspection hole and the corresponding key hole of the low-temperature heat dissipation water tank to be inspected. It can accurately detect whether the position of the hole of the low-temperature heat dissipation water tank meets the qualification standard. Through the standardized limit and hole-position corresponding inspection structure, the efficiency and accuracy of the inspection process are achieved. The hole position deviation can be judged intuitively, reducing manual inspection error and time cost, improving inspection efficiency and reliability, ensuring that the quality of the key hole of the low-temperature heat dissipation water tank meets the requirements, and providing a reliable guarantee for product quality control.

[0038] Specifically, such as Figures 1-3As shown, in this embodiment, the limiting unit 2 includes a limiting frame 21 and multiple columns 22. The limiting frame 21 is mounted on the support base 11. The internal contour dimensions and shape of the limiting frame 21 are the same as the external contour dimensions and shape of a qualified low-temperature cooling water tank. The multiple columns 22 are arranged at intervals around the center of the limiting frame 21 along its contour. The columns 22 extend vertically and are located on the outer side of the key holes in the horizontal direction. The number and position of the columns 22 correspond one-to-one with the key holes. By setting the limiting frame 21, whose internal contour dimensions and shape are consistent with the external contour of a qualified low-temperature cooling water tank, the horizontal position of the low-temperature cooling water tank to be tested can be accurately limited, ensuring that it is aligned with the inspection fixture reference. The columns 22, which are arranged at intervals around the center of the limiting frame 21 along the outline of the limiting frame 21 and correspond one-to-one with the number and position of the key holes, and are located outside the key holes, can further position and constrain the area near the key holes of the low-temperature heat dissipation water tank from the horizontal direction. The two can work together to achieve precise limiting and all-round positioning of the horizontal displacement of the low-temperature heat dissipation water tank to be tested. The setting of the limiting frame 21 makes the position of the low-temperature heat dissipation water tank fixed and unique during testing, ensuring that the extension 31 and the testing component 32 of the testing unit 3 can accurately correspond to the key holes of the low-temperature heat dissipation water tank and the key holes to be tested, avoiding inaccurate test results due to the position deviation of the low-temperature heat dissipation water tank, and improving the stability and reliability of the testing process.

[0039] In this embodiment, the cross-section of the low-temperature cooling water tank is rectangular. Therefore, the internal contour and shape of the limiting frame 21 are the same as the outer contour dimensions of a qualified low-temperature cooling water tank, and the outer contour of the rectangular frame is also rectangular. In other embodiments, the outer contour of the limiting frame 21 can also be circular or elliptical, etc.

[0040] Optionally, such as Figures 1-3As shown, in this embodiment, the limiting unit 2 further includes a first rotating shaft 23, which passes through both the bottom end of the column 22 and the limiting frame 21. The column 22 can rotate relative to the support base 11 around the rotating shaft. When the low-temperature heat dissipation water tank to be tested is to be rotated downwards until the column 22 is parallel to the limiting frame 21, the low-temperature heat dissipation water tank to be tested is placed in the limiting frame 21, and then the column 22 is rotated upwards until it is perpendicular to the limiting frame 21 to limit the low-temperature heat dissipation water tank to be tested. Then, the testing component 32 is used to test the low-temperature heat dissipation water tank to be tested. When the column 22 is rotated downwards, the horizontal obstruction can be instantly eliminated, allowing the water tank to be easily and smoothly placed into or removed from the limiting frame 21; when the column 22 is rotated upwards to a vertical state, a stable limiting structure can be formed immediately to accurately fix the water tank. The design of the first rotating shaft 23 highlights the ease of handling the low-temperature cooling water tank to be tested. Operators do not need to struggle with complex fixing devices and can quickly complete the loading and unloading of the low-temperature cooling water tank to be tested, significantly shortening the test preparation time, improving the test efficiency, ensuring the stability and accuracy of the test process, and making the low-temperature cooling water tank test work more efficient and convenient.

[0041] In other embodiments, the multiple columns 22 and the limiting frame 21 can be slidably connected. A slide rail is mounted on the limiting frame 21, extending inwards. The columns 22 are mounted on the slide rail. When the low-temperature cooling water tank to be tested is to be placed into the limiting frame 21, the column 22 is pushed to slide outwards along the extension direction of the slide rail. Once the low-temperature cooling water tank is fully placed in the limiting frame 21, the column 22 is pushed back inwards to the designated position, thus completing the testing of the low-temperature cooling water tank. The low-temperature cooling water tank is then tested. By using a slide rail, the loading and unloading process of the low-temperature cooling water tank can be efficiently completed with simple push-pull actions, significantly reducing operation time and labor intensity. Simultaneously, it ensures the stability of the low-temperature cooling water tank during testing, effectively improving testing efficiency and the reliability of test results, and optimizing the entire low-temperature cooling water tank testing workflow. In other embodiments, the column 22 and the limiting frame 21 can also be magnetically connected or plugged in, as long as the limiting unit 2 can limit the heat dissipation tank to be tested.

[0042] Preferably, such as Figures 1-3As shown, in this embodiment, the limiting unit 2 also includes a crossbeam 24, which extends horizontally and is connected to multiple columns 22 on the same side, enabling coordinated control and overall reinforcement of the columns 22 on the same side. When placing or removing the low-temperature cooling water tank to be tested, the operator only needs to rotate one of the multiple columns 22 on the same side to rotate all the columns 22 on the same side, quickly releasing or constructing the limiting space without having to operate each column 22 individually, significantly improving operational convenience. At the same time, the crossbeam 24 connects multiple columns 22 into a whole, enhancing the stability and rigidity of the limiting structure. During the testing process, it can more firmly restrict the horizontal displacement of the water tank, reduce the positional deviation of the water tank caused by the shaking of the columns 22, ensure the accuracy of the test results, and further optimize the efficiency and reliability of the low-temperature cooling water tank testing process.

[0043] Preferably, such as Figures 1-3 As shown, in this embodiment, the limiting unit 2 further includes a limiting block 25, which is disposed on the limiting frame 21. The limiting block 25 is located on the outside of the low-temperature heat dissipation water tank to be tested. The limiting block 25 is stepped, with the stepped surface of the limiting block 25 facing the low-temperature heat dissipation water tank to be tested. The low-temperature heat dissipation water tank to be tested can be locked on the stepped surface, realizing further precise limiting and stable support of the water tank in the horizontal direction, avoiding shaking or displacement of the low-temperature heat dissipation water tank during the testing process. The stepped structure adapts to the outline of the low-temperature heat dissipation water tank, enhancing the tightness and adaptability of the limiting. Together with the limiting frame 21 and the column 22, it forms a more complete limiting system, further ensuring the precise correspondence between the extension 31 and the testing component 32 of the testing unit 3 and the key holes of the low-temperature heat dissipation water tank and the key holes to be tested, greatly improving the accuracy, stability and reliability of the testing.

[0044] Optionally, in this embodiment, the limiting frame 21 is a rectangular annular frame with an internal contour and shape that are the same as the outer contour of a qualified low-temperature cooling water tank. The outer contour of the rectangular frame is also rectangular. Each of the four sides of the rectangular limiting frame 21 is provided with a column 22. Three columns 22 are provided on the length side of the rectangular limiting frame 21, and these three columns 22 are connected by a crossbeam 24. Two columns 22 are spaced apart on the width side of the rectangular limiting frame 21, and these two columns 22 are connected by a crossbeam 24. In other embodiments, the number of columns 22 can be 8, 9, or 11, as long as it can limit the movement of the low-temperature cooling water tank under test.

[0045] Optionally, such as Figures 1-3As shown, in this embodiment, the limiting frame 21 is a rectangular annular frame with an internal contour and shape that are the same as the outer contour of a qualified low-temperature cooling water tank. The outer contour of the rectangular frame is also rectangular. Four limiting blocks 25 are provided, and the four limiting blocks 25 are respectively located at the four vertices of the rectangular limiting frame 21, forming stable limiting support points from the four corners of the low-temperature cooling water tank, thus constructing a symmetrical and balanced limiting structure. In other embodiments, there may be two, three, five, or six limiting blocks 25, etc.

[0046] Preferably, in this embodiment, the detection unit 3 further includes a second rotating shaft, which passes through both the top of the column 22 and the extension 31, allowing the extension 31 to be rotatably connected to the limiting unit 2 via the second rotating shaft. The extension 31 can rotate relative to the base 1. When testing the low-temperature cooling water tank, the extension 31 is rotated upwards until it is parallel to the column 22. At this time, the low-temperature cooling water tank is placed in the limiting frame 21, and then the column 22 is rotated downwards until it is perpendicular to the column 22, thus completing the precise limiting and hole correspondence of the low-temperature cooling water tank. Then, the detection piece 32 is inserted into the extension 31 to test the low-temperature cooling water tank. The extension 31 and the limiting unit 2 are rotatably connected via the second rotating shaft, effectively simplifying the loading and unloading process of the water tank, avoiding the extension 31 from obstructing the placement of the water tank, and greatly improving the convenience and smoothness of the testing operation.

[0047] Optionally, such as Figures 1-3 As shown, in this embodiment, the detection element 32 includes a pin 321. The pin 321 is used to be inserted sequentially from top to bottom into the corresponding detection holes and the key holes of the low-temperature cooling water tank to be tested. The pin 321 can be used to visually determine whether the position of the hole in the low-temperature cooling water tank to be tested conforms to the qualification standard by observing whether it can be smoothly inserted and its fit after insertion. This achieves accurate hole position detection in a standardized, simple, and efficient manner, avoiding errors from subjective human judgment and shortening the testing time. In other embodiments, the detection element 32 can also be a measuring rod or a sensor detection head, etc.

[0048] Preferably, such as Figures 1-2 As shown, in this embodiment, the detection component 32 also includes a handle 322, which is connected to the top of the pin 321. This provides the operator with a convenient point of force application, enabling easy and accurate insertion of the pin 321 into the detection hole and the key hole to be detected, as well as convenient removal of the pin 321 to complete the detection operation.

[0049] Optionally, in this embodiment, the handle 322 and the pin 321 are threaded together, enabling quick assembly and disassembly and secure combination of the handle 322 and the pin 321. Before testing, the handle 322 can be easily installed on top of the pin 321 to provide auxiliary testing for the force application point; after testing, it can be easily disassembled for convenient storage and maintenance. In other embodiments, the pin 321 and the handle 322 can also be magnetically connected or plugged in, as long as the handle 322 and the pin 321 can be connected.

[0050] Preferably, in this embodiment, the bottom end of the pin 321 is tapered, enabling rapid and precise alignment and insertion into the critical hole of the low-temperature cooling water tank to be tested. During testing, the tapered shape guides the insertion, reducing the risk of jamming or difficulty in insertion due to minor deviations in the hole position. This smooth insertion process prevents hard collisions and wear between the testing component 32 and the edge of the critical hole, protecting both the testing component 32 and the low-temperature cooling water tank and extending their service life.

[0051] Specifically, in this embodiment, the support base 11 is a cubic frame assembled from multiple hollow columns connected by fasteners. This provides stable support for the low-temperature cooling water tank under test, while modular assembly meets the assembly requirements of different gauge specifications. The hollow columns reduce the overall weight, facilitating handling and installation; the fastener connection method makes disassembly and assembly convenient, allowing for flexible adjustment of the size and shape of the support base 11 according to testing requirements, improving the versatility and maintainability of the gauge; the cubic frame structure provides uniform support force, enhancing the stability of the base 1 and ensuring the low-temperature cooling water tank under test remains horizontal during testing, thereby guaranteeing the testing accuracy of the limiting unit 2 and the testing unit 3.

[0052] Preferably, such as Figure 1 As shown, in this embodiment, the base 1 also includes casters 12, which are connected to the bottom of the support base 11. This enables the low-temperature cooling water tank fixture to move flexibly, allowing it to be conveniently adjusted in position according to testing needs. This facilitates transfer between different testing scenarios or workstations, reduces the labor intensity of manual handling, shortens the preparation time before testing, further optimizes the testing process, and works in conjunction with the original structure to ensure the efficiency and convenience of testing work.

[0053] Preferably, such as Figure 1As shown, in this embodiment, four casters 12 are provided, positioned below the four vertices of the bottom of the support base 11. This arrangement enables the cryogenic cooling water tank fixture to maintain overall balance and stability during movement, achieving flexible and smooth movement. The four vertices enhance the stability of the cryogenic cooling water tank fixture when placed, preventing swaying or tipping caused by a shift in the center of gravity. In other embodiments, three, five, or six casters 12 may be provided, as long as the flexible movement of the cryogenic cooling water tank fixture is achieved.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A low-temperature cooling water tank inspection fixture, used to inspect whether the positions of key holes in a low-temperature cooling water tank are correctly drilled, characterized in that... Low-temperature cooling water tank inspection fixtures include: The base (1) includes a support (11); Limiting unit (2), the limiting unit (2) is disposed on the circumferential edge of the support base (11) and limits the displacement of the low temperature heat dissipation water tank to be detected in the horizontal direction; The detection unit (3) includes multiple extensions (31) and multiple detection elements (32). The multiple extensions (31) are disposed on the limiting unit (2) and extend inward in the horizontal direction. The extensions (31) are disposed corresponding to the key holes of the qualified low-temperature heat dissipation water tank. The extensions (31) are disposed above the corresponding key holes. The extensions (31) are also provided with detection holes. The detection holes correspond one-to-one with the key holes in the vertical direction. The detection elements (32) are used to insert into the detection holes and the corresponding key holes of the low-temperature heat dissipation water tank to be tested.

2. The low-temperature heat dissipation water tank inspection fixture according to claim 1, characterized in that, The limiting unit (2) includes: A limiting frame (21) is provided on the support base (11), and the internal contour dimensions and shape of the limiting frame (21) are the same as the external contour dimensions and shape of the qualified low temperature heat dissipation water tank. Multiple columns (22) are arranged at intervals around the center of the limiting frame (21) along the outline of the limiting frame (21). The columns (22) extend in the vertical direction. Multiple columns (22) are set on the outside of the key hole in the horizontal direction. The number and position of the columns (22) correspond one-to-one with the key hole.

3. The low-temperature heat dissipation water tank inspection fixture according to claim 2, characterized in that, The limiting unit (2) also includes a first rotating shaft (23), which is inserted into both the bottom end of the column (22) and the limiting frame (21). The column (22) can rotate relative to the support base (11) around the first rotating shaft (23).

4. The cryogenic heat spreader water block of claim 3, wherein, The limiting unit (2) also includes a crossbeam (24) that extends horizontally and is connected to multiple columns (22) on the same side.

5. The cryogenic heat spreader water block of claim 2, wherein, The limiting unit (2) further includes a limiting block (25), which is disposed on the limiting frame (21). The limiting block (25) is disposed on the outside of the low-temperature heat dissipation water tank to be tested. The limiting block (25) is stepped, with the stepped surface of the limiting block (25) facing the low-temperature heat dissipation water tank to be tested. The low-temperature heat dissipation water tank to be tested can be locked on the stepped surface.

6. The cryogenic heat spreader water block of any of claims 1-5, wherein, The top of the limiting unit (2) is rotatably connected to the extension (31), and the extension (31) can be flipped relative to the base (1).

7. The cryogenic heat spreader water block of any of claims 1-5, wherein, The testing component (32) includes a pin (321), which is used to be inserted from top to bottom into the corresponding testing holes and the key holes of the low-temperature heat dissipation tank to be tested.

8. The cryogenic heat spreader waterblock of claim 7, wherein, The detection component (32) also includes a handle (322), which is connected to the top of the pin (321); And / or, the bottom end of the pin (321) is tapered.

9. The cryogenic heat spreader water block of any of claims 1-5, wherein, The support seat (11) is a cubic frame formed by connecting and splicing a plurality of hollow cylinders through fasteners.

10. The low-temperature heat dissipation water tank inspection fixture according to any one of claims 1-5, characterized in that, The base (1) further comprises universal wheels (12) connected to the bottom of the support seat (11).

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