Device for testing air tightness of liquid cooling pipe

Abstract

The invention discloses a liquid cooling pipe air tightness testing device, and relates to the technical field of liquid cooling pipe air tightness detection, the liquid cooling pipe air tightness testing device comprises a frame body and detection heads located at two ends of the frame body and capable of axially moving relative to the frame body, the frame body is provided with a material returning assembly, and the material returning assembly comprises a supporting plate, the lifting mechanism is located between the two detection heads and can vertically lift relative to the detection heads; the two side plates are rotationally arranged on the two sides of the supporting plate respectively. According to the feeding device, through a horizontal placement platform structure formed by the supporting plate and the side plates, direct and overall placement of a pipe body in any bending form is allowed, the operation step is simplified from multi-step embedding to one-step placement, the feeding efficiency and convenience are greatly improved, and the problems of tedious placement and low efficiency are solved.

Description

Technical Field

[0001] This invention relates to the field of liquid cooling pipe airtightness testing technology, specifically to a liquid cooling pipe airtightness testing device. Background Technology

[0002] like Figure 1 As shown in (a), the existing liquid-cooled pipe (metal bellows) airtightness testing equipment mainly consists of a testing head, a frame, and several support blocks (A1). During the straight-state testing of the liquid-cooled pipe, the testing process is as follows: before testing, the liquid-cooled pipe must be placed one by one inside multiple support blocks and straightened until it is straight. After completing the straight-state positioning, the testing head moves axially and inserts into the joints at both ends of the liquid-cooled pipe to conduct the airtightness test. However, in practical applications, this type of equipment suffers from significant problems due to the inherent characteristics of the metal bellows and the structural design limitation of "only straight-state testing," resulting in inconvenient placement and cumbersome disassembly, as detailed below: 1. The placement of liquid cooling tubes is cumbersome and the positioning efficiency is low; Because the liquid cooling pipe under test is a metal corrugated pipe, its body has strong deformability and flexibility, and no fixed rigid shape; for longer liquid cooling pipes, they are often coiled during handling to facilitate storage and transportation; even without deliberate winding, the pipe body will naturally maintain a bent state due to its own flexibility (e.g. Figure 1 As shown in (b), when placing the tube, the connector at one end of the liquid cooling tube must first be aligned and inserted into the support block on the far side. Then, the tube body must be manually inserted into the remaining support blocks from one side to the other side. This not only makes the operation cumbersome but also makes it difficult to quickly and accurately position the tube body, thus reducing the efficiency of preparation in the early stage of testing.

[0003] Second, the liquid cooling pipes are inconvenient to disassemble, prone to jamming, and the operation is time-consuming; After the airtightness test is completed, the disassembly of the liquid cooling pipe should follow the reverse steps of placement, gradually removing the pipe from each support block from one side to the other. However, because the metal bellows is soft and highly deformable, the pipe is prone to loosening, bending, or shifting during disassembly. For example, when disassembling from left to right, the operator's right hand pulls the pipe out of the support block while the left hand continuously pulls the pipe back. If the pulling force is insufficient or the operating rhythm is improper, the loose pipe is prone to jamming or scraping against the inner wall of the support block, which not only increases the difficulty of disassembly and prolongs the operation time, but may also cause hidden damage to the corrugated structure of the metal bellows or the joints at both ends due to pulling and jamming, affecting the reliability of the product in subsequent use. Summary of the Invention

[0004] The purpose of this invention is to provide a liquid-cooled pipe airtightness testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a liquid-cooled pipe airtightness testing device, comprising a frame, detection heads located at both ends of the frame and capable of axial movement relative to the frame, wherein the frame is provided with a material ejection assembly, the material ejection assembly comprising: The tray is located between the two detection heads and can be vertically raised and lowered relative to the detection heads; Two side plates are rotatably mounted on both sides of the support plate; The drive assembly is configured to lower the tray from its highest point to its lowest point when the detection head is performing detection work, and to drive the two side plates to change from a horizontal state to a vertical state.

[0006] As a further embodiment of the present invention, both ends of the side plate are provided with adjustment components. The adjustment components include two adjustment pieces that are elastically slidably connected to both ends of the side plate. Each adjustment piece is slidably connected with a push rod. Each push rod has a gear fixed at its bottom end. Each gear is rotatably connected to the side plate on its corresponding side. Each of the four gears is provided with a rack rod below it. Each of the two side plates is provided with a baffle plate on one side. When the drive assembly drives the pallet to its highest position, the rack rod and gear disengage. When the side plate changes to a horizontal state, the top of the baffle is lower than the bottom of the side plate.

[0007] As a further embodiment of the present invention, the driving assembly includes a transmission unit and a linear drive unit located on one side of each of the two detection heads. The linear drive unit includes a base, the detection head is disposed on the base and moves synchronously with the base, the base is slidably connected to the guide rail on the frame, and the rack is fixedly disposed on the base. The transmission unit is used to lift the tray upwards when the detection head is performing detection work.

[0008] As a further embodiment of the present invention, the transmission unit includes a rack rod 2 and a spring 1. The rack rod 2 is fixedly connected to the detection head. The rack rod 2 is L-shaped. A gear 2 is provided on one side of the rack rod 2. The gear 2 is rotatably connected to the base. A push rod 1 is fixedly provided on the gear 2. A push rod 2 is rotatably connected to the top end of the push rod 1. A horizontal plate is rotatably connected to the top end of the push rod 2. The horizontal plate is used to lift the support plate. The tray is slidably connected to the base, and a spring is fixed between the tray and the base.

[0009] As a further aspect of the present invention, when the detection head is in working condition, the top of the horizontal plate is lower than the bottom of the support plate.

[0010] As a further embodiment of the present invention, there is a gap between the horizontal plate and the end of the support plate, and a relief plate is elastically slidably connected inside the horizontal plate.

[0011] As a further embodiment of the present invention, both the side plate and the support plate are telescopic plates.

[0012] As a further embodiment of the present invention, the baffle is elastically slidably connected to the frame, a wedge block is provided below the baffle, the wedge block is slidably connected to the frame, and a telescopic member is fixed between the wedge block and the frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention, through the "horizontal placement platform" structure formed by the pallet and side plate, allows tubes of any curved shape to be placed directly and as a whole. The operation steps are simplified from "multi-step embedding" to "one-step placement", which greatly improves the efficiency and convenience of feeding and solves the problems of cumbersome and inefficient placement.

[0014] By using the "overall lifting" method for material removal, the tube body only has simple contact and separation with the support plate and side plate throughout the process, completely avoiding the risk of friction and pulling within the narrow support block. This achieves non-destructive and rapid disassembly, replacing the disassembly method that requires "gradually pulling out from one side to the other," which is prone to tube jamming and damage, making disassembly inconvenient and prone to jamming and damage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the liquid cooling pipe embedded inside the support block in the prior art (wherein, Figure 1 (a) is a schematic diagram of the liquid cooling pipe embedded inside the support block, and (b) is a schematic diagram of the liquid cooling pipe in a bent state. Figure 2 This is a front view of the overall structure of the present invention; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a top view of the overall structure of the present invention; Figure 5 This is a schematic diagram of the pallet and side plate of the present invention forming a horizontally placed platform; Figure 6 This is a schematic diagram showing the U-shaped placement space formed by the pallet and side plate of the present invention; Figure 7 This is a schematic diagram showing the distance between the pallet and the side plate of the present invention and the detection head when they form a horizontally placed platform; Figure 8 This is a schematic diagram of the frame, side panels, and support plate during the airtightness testing of this invention. Figure 9 This is a schematic diagram of push rod one and push rod two during the airtightness testing of this invention; Figure 10 This is a schematic diagram showing how the support plate is lifted when the first and second top rods of the present invention are in a vertical state; Figure 11 This is a schematic diagram showing that the support plate and side plate of the present invention are higher than the top of the top piece; Figure 12 This is a schematic diagram of the present invention when the support plate and side plate are rotated to a horizontal position after being higher than the top of the top piece; Figure 13 This is a schematic diagram of the wedge block being inserted to the bottom of the top piece according to the present invention; Figure 14 This is a schematic diagram of the side plate and support plate of the present invention when they are V-shaped; Figure 15 This is a schematic diagram showing the connection relationship between the sub-plate 1, sub-plate 2, support plate, and side plate of the present invention; Figure 16 for Figure 15 A magnified view of a section at point B. In the attached image:

[0016] 1. Frame; 2. Detection head; 201. Machine body; 3. Support plate; 301. Spring 1; 302. Sub-plate 1; 4. Side plate; 401. Sub-plate 2; 5. Adjusting plate; 501. Spring 2; 6. Push rod; 7. Gear 1; 8. Rack rod 1; 9. Baffle plate; 10. Base; 11. Rack rod 2; 12. Gear 2; 13. Top rod 1; 14. Top rod 2; 15. Horizontal plate; 16. Leaving plate; 1601. Spring 3; 17. Wedge block; 18. Telescopic component. Detailed Implementation

[0017] Please see Figures 1-16 This invention provides a technical solution: a liquid-cooled pipe airtightness testing device, including a frame 1 and detection heads 2 located at both ends of the frame 1 and capable of axial movement relative to the frame 1. The detection heads 2 are conical to facilitate insertion and adaptation to the joint. The detection heads 2 are disposed inside the body 201 and driven by the body 201. The body 201 is fixed on the frame 1. The frame 1 is provided with a material ejection assembly, which includes a support plate 3, two side plates 4, and a drive assembly. The support plate 3 is located between the two detection heads 2 and can be vertically raised and lowered relative to the detection heads 2. The two side plates 4 are rotatably disposed on both sides of the support plate 3. The drive assembly is configured to lower the support plate 3 from the highest point to the lowest point when the detection heads 2 are performing testing, and to drive the two side plates 4 to change from a horizontal state to a vertical state.

[0018] The placement of the liquid cooling pipes (marked A2 in the diagram) is as follows: Figure 5 and Figure 7 As shown: At this time, the drive assembly drive plate 3 is in its highest position, and the distance between the center point of the detection head 2 and the center point of the liquid cooling pipe is as follows: Figure 7As shown in L2, with both side plates 4 in a horizontal position, the adjacent support plate 3 and side plate 4 together form a horizontal placement platform. The operator can place liquid cooling pipes of any shape (such as naturally bent or curled) directly on this horizontal placement platform, which can easily support the bent pipes. Then, the connectors at both ends of the liquid cooling pipe can be pulled to the outside of the support plate 3 and the side plate 4 respectively. There is no need to manually straighten the pipes and embed them one by one into the multiple support blocks of traditional equipment, and there is no need to consider the jamming problem when placing the liquid cooling pipes, which greatly improves the placement efficiency.

[0019] Testing work, such as Figure 1 , Figure 4 , Figure 6 and Figure 8 As shown: Start the machine body 201 to move the detection head 2 axially; at this time, the support plate 3 descends from the highest point to the lowest point under the action of the drive component (the descent distance is L2, so that the center point of the detection head 2 and the center point of the liquid cooling pipe are at the same horizontal height), and smoothly "places" the pipe body on the detection station of the frame 1. At the same time, the drive component drives the two side plates 4 to rotate inward synchronously from the horizontal state to the vertical state; during this process, the original horizontal placement platform is transformed into a "U"-shaped placement space, which limits the detection head 2 and prevents lateral displacement during the airtightness test; then the detection head 2 moves axially and inserts into the joints at both ends of the pipe body to start the airtightness test. When the detection head 2 contacts the joints at both ends of the liquid cooling pipe, the two ends of the "U"-shaped placement space will block the liquid cooling pipe joints, thus playing a secondary role in limiting and positioning during the airtightness test.

[0020] Material removal process: After the inspection is completed, the inspection head 2 is withdrawn, the drive assembly works in reverse, the drive plate 3 is raised from the lowest point to the highest point, and the two side plates 4 are driven back from the vertical state to the horizontal state. During this process, the horizontal side plates 4 and the rising plate 3 work together to lift the liquid cooling tube that has completed the inspection smoothly and as a whole upward, so that it is completely removed from the inspection station. The operator can directly take the tube from the top without having to perform the tedious operation of "gradually pulling it out from one side to the other".

[0021] This invention, through a "horizontal placement platform" structure, allows tubes of any curved shape to be placed directly and as a whole. The operation steps are simplified from "multi-step embedding" to "one-step placement", which greatly improves the efficiency and convenience of feeding and solves the problems of cumbersome and inefficient placement.

[0022] By using the "overall lifting" method for material removal, the tube body only has simple contact and separation with the support plate 3 and side plate 4 throughout the process, completely avoiding the risk of friction and pulling within the narrow support block. This achieves non-destructive and rapid disassembly, replacing the disassembly method that requires "gradually pulling out from one side to the other," which is prone to tube jamming and damage, making disassembly inconvenient and prone to jamming and damage.

[0023] The "U-shaped" space formed by the descent of the support plate 3 and the straightening of the side plate 4 can stably constrain and position the naturally curved liquid cooling pipe on the straight detection station at the moment of detection, realizing the positioning from "bending" to "straight measurement".

[0024] Both ends of the side plate 4 are provided with adjustment components. The adjustment components include adjustment pieces 5 that are slidably connected to both ends of the two side plates 4. A second spring 501 is fixed between the adjustment piece 5 and the inner wall of the side plate 4. Each adjustment piece 5 is slidably connected with a push rod 6. Each push rod 6 has a gear 7 fixed at its bottom end. Each gear 7 is rotatably connected to the side plate 4 on its corresponding side. Each of the four gears 7 has a rack rod 8 below it. Each of the two side plates 4 has a baffle 9 on one side. When the drive assembly drives the pallet 3 to rise to the highest point, the rack rod 8 and the gear 7 disengage. When the side plate 4 changes to a horizontal state, the top of the baffle 9 is lower than the bottom of the side plate 4.

[0025] The drive assembly includes a transmission unit and a linear drive unit located on one side of each of the two detection heads 2; The linear drive unit includes a base 10, a detection head 2 is set on the base 10 and moves synchronously with the base 10, the base 10 is slidably connected to the guide rail on the frame 1, and the rack rod 8 is fixed on the base 10. The transmission unit is used to lift the tray 3 upward when the detection head 2 is performing detection work.

[0026] The transmission unit includes a rack rod 11 and a spring 301. The rack rod 11 is fixedly connected to the detection head 2. The rack rod 11 is L-shaped. A gear 12 is provided on one side of the rack rod 11. The gear 12 is rotatably connected to the base 10. A push rod 13 is fixed on the gear 12. A push rod 14 is rotatably connected to the top of the push rod 13. A horizontal plate 15 is rotatably connected to the top of the push rod 14. The horizontal plate 15 is used to lift the support plate 3. The support plate 3 is slidably connected to the base 10, and a spring 301 is fixed between the support plate 3 and the base 10.

[0027] Both the side plate 4 and the support plate 3 are telescopic plates.

[0028] like Figure 2 , Figure 3 , Figure 7 , Figure 8 , Figure 10 , Figure 15 and Figure 16 As shown: The top height of the baffle 9 is marked by the dashed line P. When the liquid cooling pipe is placed, both the support plate 3 and the side plate 4 are at their highest positions, and the bottom of both are higher than the dashed line P. At this time, the distance between the adjusting plate 5 and the liquid cooling pipe connector is as follows: Figure 10The L shown (it should be noted that in actual use, in...) Figure 10 When the bottom of the two side plates 4 are higher than the dotted line P, they should be in a horizontal state rather than the vertical state shown in the figure. Here, in order to make it easier to observe the state between gear 7 and rack rod 8, the side plates 4 are shown in a vertical state, and at this time, gear 7 is located above rack rod 8.

[0029] During the airtightness test, the body 201 drives the detection head 2 in the following way: Figure 10 As shown, move axially downwards (direction of movement is...) Figure 10 (As indicated by the dashed arrow in the diagram), during this process, rack rod 11 and gear 12 mesh together and drive vertical push rod 13 and push rod 14 to fold. During this process, horizontal plate 15 descends, and support plate 3 slides down along base 10 in sync with the elastic release of spring 301. At this time, the bottom end of side plate 4 will be blocked by baffle 9 to force it to rotate around the rotation axis on support plate 3 from horizontal to vertical, thus presenting a "U" shape. After the side plate 4 rotates to a vertical position, it descends with the support plate 3 until the gear 7 contacts the rack rod 8. This causes the push rod 6 to rotate with the gear 7, thereby pushing the adjusting plate 5 towards the liquid cooling pipe connector. Figure 10 When the distance between the liquid cooling pipe joint and the distance shown is L, move to the position as shown. Figure 9 The distance L shown is forced by the adjustment plate 5, which causes the two ends of the liquid cooling pipe joint to be stretched outward in opposite directions, so that the liquid cooling pipe is in a straightened state and avoids the joint part from being offset from the detection head 2.

[0030] When the tray 3 descends to its limit, the detection head 2, driven by the body 201, is inserted into the joints at both ends of the liquid cooling pipe to perform an airtightness test (e.g., Figure 9 As shown), and at this time, rack rod 21 is on the right side of gear 22.

[0031] The purpose of the linear drive unit is: When the two bases 10 slide relative to each other (closer or farther away) along the frame 1, the distance between them can be adjusted. During this process, the support plate 3 and the side plate 4 of the "telescopic plate" can be extended or shortened, so that the fixed distance L3 can be increased or decreased, thereby meeting the airtightness testing requirements of liquid cooling pipes of different lengths.

[0032] The telescopic plate is specifically defined as follows: the side plate 4 and the support plate 3 are designed in sections, specifically consisting of a first sub-plate 302 that is slidably connected to the two side support plates 3 and located in the middle, and a second sub-plate 401 that is slidably connected to the two side plates 4. The first sub-plate 302 and the second sub-plate 401 are rotatably connected, and a torsion spring is sleeved on the rotating shaft (for rotating when the side plate 4 moves higher than the baffle 9). The bottom end of the first sub-plate 302 is slidably connected to the frame 1.

[0033] When the detection head 2 is in working condition, the top of the horizontal plate 15 is lower than the bottom of the support plate 3.

[0034] There is a gap between the horizontal plate 15 and the end of the support plate 3. A relief plate 16 is slidably connected inside the horizontal plate 15. A spring 1601 is fixed between the relief plate 16 and the horizontal plate 15.

[0035] like Figure 10 As shown: When the liquid cooling tube is removed (or placed), the gap L between the original adjusting plate 5 and the joint will be filled by the relief plate 16, so that the joint will not be stuck due to the gap when the liquid cooling tube is pulled down directly.

[0036] When tray 3 moves from the top to the bottom (i.e. Figure 9 During the transformation process, as gear 7 meshes with rack 8 and causes adjusting plate 5 to move a distance L and come into contact with the liquid cooling pipe joint, adjusting plate 5 will push the relief plate 16 to move inward into the horizontal plate 15 and compress spring 3 1601 until adjusting plate 5 moves to its maximum extent.

[0037] During the airtightness test, the horizontal plate 15 below the support plate 3 (i.e., the distance between the horizontal plate 15 and the liquid cooling pipe body is...) Figure 9 As shown in L1), it can make way for the joint with a larger diameter, so that the joint of the liquid cooling pipe will not bend.

[0038] The baffle 9 is elastically slidably connected to the frame 1. A wedge block 17 is provided below the baffle 9. The wedge block 17 is slidably connected to the frame 1. A telescopic member 18 is fixed between the wedge block 17 and the frame 1 (the telescopic member 18 can be any one of the cylinder, electric telescopic rod, or hydraulic rod in the prior art, which is common knowledge in the prior art).

[0039] like Figures 11-14 As shown: The height line at the top of the baffle 9 is a dashed line P. When the support plate 3 and the side plate 4 rise to the height shown by the dashed line P, the height line will be as shown by the dashed line P. Figure 11 Then, the torsion spring drives the secondary plate 401 to rotate around the rotation axis, thereby causing the side plate 4 to rotate synchronously to the position shown. Figure 12 The horizontal state.

[0040] Before placing the new liquid cooling pipe to be tested, the telescopic component 18 moves the wedge block 17 from... Figure 11 As shown, insert it into the baffle 9 and push the baffle 9 upward, so that the height of the top increases from the dotted line P to P1. At this time, the baffle 9 will push the side plate 4 and the secondary plate 401 up to the position shown. Figure 14As shown in the V-shape, the V-shaped opening area formed by the side plate 4 and the support plate 3 facilitates the placement of the liquid cooling pipe. It can visually guide and physically limit the placement of the liquid cooling pipe, and play a role in pre-enclosing a small area. When the side plate 4 is rotated to form a "U" shape with the support plate 3, it can better restrict the liquid cooling pipe and prevent the liquid cooling pipe from escaping when rotating from the V-shape to the U-shape.

Claims

1. A liquid-cooled pipe airtightness testing device, comprising a frame (1) and a detection head (2) located at both ends of the frame (1) and capable of axially moving relative to the frame (1), characterized in that: The frame (1) is provided with a material unloading assembly, which includes: The tray (3) is located between the two detection heads (2) and can be raised and lowered vertically relative to the detection heads (2); Two side plates (4) are respectively rotatably mounted on both sides of the support plate (3); The drive assembly is configured to lower the tray (3) from the highest point to the lowest point when the detection head (2) is performing detection work, and to drive the two side plates (4) to change from a horizontal state to a vertical state.

2. The liquid-cooled pipe airtightness testing device according to claim 1, characterized in that: Both ends of the side plate (4) are provided with adjustment components. The adjustment components include two adjustment pieces (5) that are elastically slidably connected to both ends of the two side plates (4). Each adjustment piece (5) is slidably connected with a push rod (6). Each push rod (6) has a gear (7) fixed at its bottom end. Each gear (7) is rotatably connected to the side plate (4) on its corresponding side. Each of the four gears (7) is provided with a rack rod (8) below it. Each of the two side plates (4) has a baffle (9) on one side. When the drive assembly drives the pallet (3) to rise to the highest point, the rack rod (8) and the gear (7) disengage. When the side plate (4) changes to a horizontal state, the top of the baffle (9) is lower than the bottom of the side plate (4).

3. The liquid-cooled pipe airtightness testing device according to claim 2, characterized in that: The drive assembly includes a transmission unit and a linear drive unit located on one side of each of the two detection heads (2); The linear drive unit includes a base (10), the detection head (2) is disposed on the base (10) and moves synchronously with the base (10), the base (10) is slidably connected to the guide rail on the frame (1), and the rack rod (8) is fixed on the base (10); The transmission unit is used to lift the tray (3) upward when the detection head (2) is performing detection work.

4. The liquid-cooled pipe airtightness testing device according to claim 3, characterized in that: The transmission unit includes a rack rod 2 (11) and a spring 1 (301). The rack rod 2 (11) is fixedly connected to the detection head (2). The rack rod 2 (11) is L-shaped. A gear 2 (12) is provided on one side of the rack rod 2 (11). The gear 2 (12) is rotatably connected to the base (10). A push rod 1 (13) is fixed on the gear 2 (12). A push rod 2 (14) is rotatably connected to the top of the push rod 1 (13). A horizontal plate (15) is rotatably connected to the top of the push rod 2 (14). The horizontal plate (15) is used to lift the support plate (3). The tray (3) is slidably connected to the base (10), and a spring (301) is fixed between the tray (3) and the base (10).

5. The liquid-cooled pipe airtightness testing device according to claim 4, characterized in that: When the detection head (2) is in working condition, the top of the horizontal plate (15) is lower than the bottom of the support plate (3).

6. The liquid-cooled pipe airtightness testing device according to claim 5, characterized in that: There is a gap between the horizontal plate (15) and the end of the support plate (3), and a relief plate (16) is elastically slidably connected inside the horizontal plate (15).

7. The liquid-cooled pipe airtightness testing device according to claim 3, characterized in that: Both the side plate (4) and the support plate (3) are telescopic plates.

8. The liquid-cooled pipe airtightness testing device according to claim 2, characterized in that: The baffle (9) is elastically slidably connected to the frame (1), and a wedge block (17) is provided below the baffle (9). The wedge block (17) is slidably connected to the frame (1), and a telescopic member (18) is fixed between the wedge block (17) and the frame (1).

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