Water tank air tightness detection device

Abstract

The utility model relates to a water tank air tightness detection device, which relates to the technical field of air tightness detection, and comprises a workbench and a positioning right-angle block arranged on the workbench, the workbench is provided with a plurality of first supporting rods, the first supporting rods are provided with first air cylinders, and the first air cylinders are provided with second air cylinders. A piston rod of the first air cylinder is connected with a first sealing ring which can abut against the surface of the water tank. A second air cylinder is arranged on the workbench, a piston rod of the second air cylinder is connected with a second sealing ring capable of abutting against an air inlet pipe on the water tank, the second sealing ring is communicated with a pressurizing pipe, the pressurizing pipe is connected with a pressurizing pump, and the pressurizing pipe is connected with a precise pressure gauge. The device has the advantages that the joint of the water tank can be quickly sealed, manual labor is reduced, and detection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of airtightness testing, and in particular to a water tank airtightness testing device. Background Technology

[0002] Water tanks are widely used in many fields, such as automotive cooling systems, energy storage cooling systems, and domestic water supply. Their airtightness is crucial, affecting not only the safety of the product during operation but also its lifespan and user experience. For example, poor airtightness in industrial liquid-cooled unit water tanks can lead to coolant leakage, affecting battery heat dissipation and potentially causing malfunctions. In industrial applications, leaks from water tanks storing corrosive or toxic liquids can also cause environmental pollution and safety accidents. Therefore, to ensure the quality and safety of water tanks, airtightness testing is necessary during production, installation, and use.

[0003] In related technologies, the airtightness test of water tanks mostly adopts the manual wrapping of raw material tape test method. The raw material tape is sealed to the joint of the water tank, and then the water tank is pressurized by the air supply system. The airtightness of the water tank is judged by observing the pressure change inside the water tank.

[0004] In the process of developing this application, it was found that the technology has at least the following problems: manual wrapping of PTFE tape is slow, especially for the inspection of water tanks with many joints, which will take a lot of time to prepare for sealing. The disassembly and assembly of PTFE tape also takes a long time, which reduces the overall inspection efficiency. Utility Model Content

[0005] In order to quickly seal the joints of the water tank, reduce manual labor, and improve testing efficiency, this application provides a water tank airtightness testing device.

[0006] The water tank airtightness testing device provided in this application adopts the following technical solution:

[0007] A water tank airtightness testing device includes a workbench and a positioning right-angle block set on the workbench. The workbench is provided with several first support rods, each with a first cylinder. The piston rod of the first cylinder is connected to a first sealing ring that abuts against the surface of the water tank. A second cylinder is also provided on the workbench. The piston rod of the second cylinder is connected to a second sealing ring that abuts against an air inlet pipe on the water tank. The second sealing ring is connected to a pressurization pipe, which is connected to a pressurization pump and a precision pressure gauge.

[0008] By adopting the above technical solution, when conducting airtightness testing on the water tank, the water tank is placed between the positioning right-angle blocks on the workbench. The right-angle blocks abut against the top corners of the water tank, positioning it on the workbench. During testing, the piston rod of the first cylinder extends, causing the first sealing ring to fit onto the water tank's connector. The first sealing ring abuts against the surface of the water tank, quickly sealing the connector. Simultaneously, the piston rod of the second cylinder extends, causing the second sealing ring to abut against the water tank's air inlet pipe. The second sealing ring quickly connects to the water tank's air inlet pipe. At this point, a pressure pump is used to pressurize the water tank through a pressure pipe, continuously increasing the internal air pressure. Following a preset pressure increase rate, the internal pressure of the water tank is gradually increased to the specified test pressure value. During the pressure rise process, the pressure data of the precision pressure gauge is closely monitored to ensure a smooth pressure increase without abnormal fluctuations. Once the internal pressure of the water tank reaches the test pressure value, the air supply is stopped, and the pressure is kept stable for a period of time. The data changes of the precision pressure gauge are collected, and the airtightness of the water tank is judged according to the set pressure drop threshold and test time. If the pressure drop value inside the water tank exceeds the threshold within the test time, the water tank is judged to be unqualified for airtightness, and the unqualified information is marked. If the pressure drop value does not exceed the threshold, the water tank is judged to be qualified for airtightness. After the test is completed, the pistons of the first and second cylinders retract, and the sealing and pressurization test at the water tank interface is quickly performed by the first and second cylinders, reducing manual labor and improving testing efficiency.

[0009] Preferably, the workbench is provided with a plurality of second support rods, and the second support rods are provided with elbow clamps.

[0010] By adopting the above technical solution, the positioning right-angle block positions the water tank at the top corner, and the elbow clamp can abut against the top wall of the water tank, which helps to improve the stability of the water tank during testing.

[0011] Preferably, both the first and second support rods are divided into a positioning plate, a positioning rod, and a telescopic rod. The positioning plate is connected to the worktable. A set of positioning shafts are symmetrically fixed on the positioning plate. The positioning rod is fixed on the positioning shaft. The positioning rod has a telescopic groove. The telescopic rod is slidably disposed in the telescopic groove. A screw is rotatably disposed at the center of the positioning plate. The telescopic rod and the screw are threadedly connected. The positioning plate is provided with a rotating assembly for driving the screw to rotate. The first cylinder and the elbow clamp are both disposed on the telescopic rod.

[0012] By adopting the above technical solution, the rotating component drives the screw to rotate, and the positioning rod guides the telescopic rod, which can control the telescopic rod to slide vertically in the telescopic groove. This allows for adjustment of the height of the first cylinder and the elbow clamp on the worktable, facilitating the testing of water tanks at different heights and improving the applicability of the device.

[0013] Preferably, the rotating assembly includes a rotating ring, a rotating gear ring, a linkage gear, and a drive gear. The rotating ring is rotatably mounted on the positioning disk, the positioning rod is located inside the rotating ring, the rotating gear ring is mounted on the inner wall of the rotating ring, the linkage gear is rotatably mounted on the positioning rod, the drive gear is fixedly mounted on the screw, and the linkage gear meshes between the rotating gear ring and the drive gear.

[0014] By adopting the above technical solution, when it is necessary to adjust the height of the first support rod or the second support rod, the rotating ring is held and rotated. The rotation causes the rotating gear ring to abut against the linkage gear, which in turn abuts against the drive gear, causing the drive gear and the screw to rotate. This controls the telescopic rod to slide within the telescopic groove. The operation is convenient and quick, and it occupies little space.

[0015] Preferably, the outer wall of the positioning rod is provided with a sealing plate, and the inner wall of the rotating ring is in contact with the sealing plate.

[0016] By adopting the above technical solution, the sealing plate seals the space between the rotating ring and the positioning rod, effectively reducing dust from entering the rotating ring and thus helping to extend the service life of the rotating assembly.

[0017] Preferably, the outer wall of the rotating ring is integrally provided with raised texture.

[0018] By adopting the above technical solution, the friction force on the surface of the rotating ring is improved, making it easier to drive the rotating ring to rotate.

[0019] Preferably, positioning bolts are provided through the positioning disk and the positioning right-angle block, and a number of positioning holes are provided on the surface of the worktable, with the positioning bolts and positioning holes being threadedly connected.

[0020] By adopting the above technical solution and threading the positioning bolts to different positioning holes, the positions of the positioning right-angle block, the first support rod, and the second support rod on the workbench can be changed, which facilitates the testing of water tanks of different specifications and models and further improves the applicability.

[0021] Preferably, a recycling plate is provided below the workbench.

[0022] By adopting the above technical solution, if there is liquid in the water tank, the detection can be performed. If liquid leaks out, the recovery plate can recover the liquid, reducing pollution.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up a workbench, positioning right-angle block, first support rod, first cylinder, first sealing ring, second cylinder, second sealing ring, pressurizing pump, and precision pressure gauge, when testing the airtightness of the water tank, the positioning right-angle block is positioned against the top corner of the water tank. The first cylinder drives the first sealing ring to be fitted onto the water tank's connector. The second cylinder drives the second sealing ring to abut against the water tank's air inlet pipe, and the second sealing ring is quickly connected to the water tank's air inlet pipe. At this time, the pressurizing pump pressurizes the water tank through the pressurizing pipe. The pressure change inside the water tank is observed through the precision pressure gauge. The first and second cylinders quickly seal and pressurize the water tank's interface, reducing manual labor and improving testing efficiency.

[0025] 2. By setting up a positioning plate, positioning rod, positioning shaft, telescopic groove and telescopic rod, the rotating component drives the screw to rotate, and the positioning rod guides the telescopic rod. This allows the telescopic rod to slide vertically within the telescopic groove, adjusting the height of the first cylinder and elbow clamp on the worktable. This facilitates testing water tanks of different heights and improves the applicability of the device.

[0026] 3. By setting up a rotating ring, a rotating gear ring, a linkage gear, and a drive gear, when it is necessary to adjust the height of the first or second support rod, by holding the rotating ring, the rotating ring is driven to rotate. The rotation causes the rotating gear ring to abut against the linkage gear, which in turn abuts against the drive gear, causing the drive gear and the screw to rotate, thereby controlling the telescopic rod to slide within the telescopic groove. The operation is convenient and quick, and it occupies little space, making it easy to operate. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a water tank airtightness testing device provided in an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of a water tank airtightness testing device provided in an embodiment of this application.

[0029] Figure 3 This is a cross-sectional view used to illustrate the first support rod or the second support rod in the embodiments of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Worktable; 11. Positioning right-angle block; 2. First support rod; 21. First cylinder; 211. First sealing ring; 3. Second cylinder; 31. Second sealing ring; 4. Pressurization pipe; 41. Precision pressure gauge; 5. Second support rod; 51. Elbow clamp; 61. Positioning plate; 611. Positioning shaft; 612. Screw; 62. Positioning rod; 621. Telescopic groove; 622. Sealing plate; 63. Telescopic rod; 7. Rotating assembly; 71. Rotating ring; 711. Raised pattern; 72. Rotating gear ring; 73. Linkage gear; 74. Drive gear; 8. Positioning bolt; 81. Positioning hole; 9. Recycling plate. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a water tank airtightness testing device. (Refer to...) Figure 1 and Figure 2 It includes a workbench 1 and positioning right-angle blocks 11 set on the workbench 1. Four positioning right-angle blocks 11 are symmetrically arranged. Several first support rods 2 are set on the workbench 1. The length direction of the first support rods 2 is set in the vertical direction. A first cylinder 21 is fixed on the first support rod 2 by bolts. The first cylinder 21 can be located on the side wall of the first support rod 2 or at the top of the first support rod 2. The piston rod of the first cylinder 21 is connected to a first sealing ring 211. The first sealing ring is aligned with the joint on the surface of the water tank.

[0033] Reference Figure 1 and Figure 2 A second cylinder 3 is provided on the workbench 1. The length of the second cylinder 3 is arranged in the vertical direction. The piston rod of the second cylinder 3 is connected to a second sealing ring 31. The second sealing ring 31 is aligned with the air inlet pipe on the water tank. The side wall of the second sealing ring 31 is connected to a pressure pipe 4. The pressure pipe 4 is connected to a pressure pump (not shown in the figure). A precision pressure gauge 41 is connected to the pressure pipe 4. During the airtightness test of the water tank, the water tank is placed between the positioning right-angle blocks 11 on the workbench 1. The water tank is positioned on the workbench 1 by the right-angle blocks 11 abutting against the top corners of the water tank. During the test, the piston rod of the first cylinder 21 extends, causing the first sealing ring 211 to be fitted onto the water tank's joint. The first sealing ring 211 abuts against the surface of the water tank, quickly sealing the joint. At the same time, the piston rod of the second cylinder 3 extends, causing the second sealing ring 31 to abut against the water tank's air inlet pipe. The second sealing ring 31 is quickly connected to the water tank's air inlet pipe. At this time, a pressure pump is used to pressurize the water tank through the pressure pipe 4, causing the internal air pressure of the water tank to continuously increase. The internal pressure of the water tank is gradually increased to the specified test pressure value according to the preset pressure increase rate. During the pressure increase process, the pressure data of the precision pressure gauge 41 is closely observed to ensure that the pressure increase is stable and without abnormal fluctuations. When the internal pressure of the water tank reaches the test pressure value, the air supply is stopped, and the pressure is kept stable for a period of time. The data changes of the precision pressure gauge 41 are collected. According to the set pressure drop threshold and test time, the airtightness of the water tank is judged. If the internal pressure drop value of the water tank exceeds the threshold within the test time, the water tank is judged to be unqualified for airtightness and the unqualified information is marked. If the pressure drop value does not exceed the threshold, the water tank is judged to be qualified for airtightness.

[0034] Reference Figure 1 and Figure 2The workbench 1 is equipped with several second support rods 5, the length of which is vertical. Each second support rod 5 is equipped with an elbow clamp 51. The positioning right-angle block 11 positions the water tank at the top corner. The elbow clamp 51 can abut against the top wall of the water tank, which helps to improve the stability of the water tank during testing.

[0035] Reference Figure 3 The first support rod 2 and the second support rod 5 are each divided into a positioning plate 61, a positioning rod 62, and a telescopic rod 63. The positioning plate 61 is connected to the worktable 1. A set of positioning shafts 611 are symmetrically fixed on the positioning plate 61. The positioning rod 62 is fixed on the positioning shaft 611. The first cylinder 21 and the elbow clamp 51 are both set on the telescopic rod 63. The positioning rod 62 has a telescopic groove 621 along its height direction. The telescopic rod 63 is slidably set in the telescopic groove 621. The cross-section of the telescopic rod 63 and the positioning rod 62 is rectangular. The telescopic rod 63 and the telescopic groove 621 are mutually adapted. A screw 612 is rotatably set at the center of the positioning plate 61. The screw 612, the positioning plate 61 and the telescopic rod 63 are coaxially arranged. The telescopic rod 63 and the screw 612 are threadedly connected.

[0036] Reference Figure 3 A rotating assembly 7 is provided on the positioning disk 61. The rotating assembly 7 includes a rotating ring 71, a rotating gear ring 72, a linkage gear 73, and a drive gear 74. The rotating ring 71 is rotatably mounted on the positioning disk 61 via bearings. The positioning rod 62 is located inside the rotating ring 71. A sealing plate 622 is fixedly mounted on the outer wall of the positioning rod 62. The sealing plate 622 is annular, and the inner wall of the rotating ring 71 is in contact with the sealing plate 622. The rotating gear ring 72 is mounted on the inner wall of the rotating ring 71, and the outer wall of the rotating ring 71 is integrally provided with raised textures 711. The linkage gear 73 is rotatably mounted on the positioning rod 62, and the drive gear 74 is fixedly mounted on the screw 612. The linkage gear 73 meshes between the rotating gear ring 72 and the drive gear 74. By holding the rotating ring 71, the rotating ring 71 is driven to rotate. The rotation causes the rotating gear ring 72 to abut against the linkage gear 73. The linkage gear 73 then abuts against the drive gear 74, causing the drive gear 74 and the screw 612 to rotate. The positioning rod 62 guides the telescopic rod 63, which can control the telescopic rod 63 to slide vertically in the telescopic groove 621. This allows for adjustment of the height of the first cylinder 21 and the elbow clamp 51 on the worktable 1, facilitating the testing of water tanks of different heights. This improves the applicability of the device, while also occupying little space and being easy to operate.

[0037] Reference Figure 1Positioning bolts 8 are provided through both the positioning disc 61 and the positioning right-angle block 11. There are at least two positioning bolts 8. Several positioning holes 81 are provided on the surface of the worktable 1. The positioning bolts 8 are threadedly connected to the positioning holes 81. By threading the positioning bolts 8 to different positioning holes 81, the positions of the positioning right-angle block 11, the first support rod 2, and the second support rod 5 on the worktable 1 can be changed, which facilitates the testing of water tanks of different specifications and models, and further improves the applicability.

[0038] Reference Figure 1 A recovery plate 9 is installed below the workbench 1. If there is liquid in the water tank, it can be detected. If liquid leaks out, the recovery plate 9 can recover the liquid and reduce pollution.

[0039] The implementation principle of the water tank airtightness testing device in this application embodiment is as follows: When testing the airtightness of the water tank, the water tank is placed between the positioning right-angle blocks 11 on the workbench 1. The positioning right-angle blocks 11 are used to position the water tank, and the elbow clamp 51 is used to hold the water tank in place. During the test, the first cylinder 21 drives the first sealing ring 211 to seal the joint of the water tank, and the second cylinder 3 drives the second sealing ring 31 to quickly connect with the air inlet pipe of the water tank. At this time, the pressurizing pump is used to pressurize the water tank through the pressurizing pipe 4, so that the air pressure inside the water tank continuously increases. The airtightness of the water tank is monitored by observing the data of the precision pressure gauge 41. The first cylinder 21 and the second cylinder 3 quickly seal the water tank interface and perform pressurization testing, which reduces manual labor and improves the testing efficiency.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A water tank air tightness detection device, characterized in that: The system includes a workbench (1) and a positioning right-angle block (11) set on the workbench (1). The workbench (1) is provided with several first support rods (2). The first support rods (2) are provided with first cylinders (21). The piston rod of the first cylinder (21) is connected to a first sealing ring (211) that can abut against the surface of the water tank. The workbench (1) is provided with a second cylinder (3). The piston rod of the second cylinder (3) is connected to a second sealing ring (31) that can abut against the air inlet pipe on the water tank. The second sealing ring (31) is connected to a pressurizing pipe (4). The pressurizing pipe (4) is connected to a pressurizing pump. The pressurizing pipe (4) is connected to a precision pressure gauge (41).

2. The water tank air tightness detection device according to claim 1, characterized in that: The workbench (1) is provided with several second support rods (5), and the second support rods (5) are provided with elbow clamps (51).

3. The water tank air tightness detection device according to claim 2, characterized in that: The first support rod (2) and the second support rod (5) are each divided into a positioning plate (61), a positioning rod (62) and a telescopic rod (63). The positioning plate (61) is connected to the worktable (1). A set of positioning shafts (611) are symmetrically fixed on the positioning plate (61). The positioning rod (62) is fixed on the positioning shaft (611). The positioning rod (62) is provided with a telescopic groove (621). The telescopic rod (63) is slidably disposed in the telescopic groove (621). A screw (612) is rotatably disposed at the center of the positioning plate (61). The telescopic rod (63) is threadedly connected to the screw (612). A rotating assembly (7) for driving the screw (612) to rotate is provided on the positioning plate (61). The first cylinder (21) and the elbow clamp (51) are both disposed on the telescopic rod (63).

4. The water tank airtightness testing device according to claim 3, characterized in that: The rotating assembly (7) includes a rotating ring (71), a rotating gear ring (72), a linkage gear (73), and a drive gear (74). The rotating ring (71) is rotatably mounted on the positioning disk (61). The positioning rod (62) is located inside the rotating ring (71). The rotating gear ring (72) is mounted on the inner wall of the rotating ring (71). The linkage gear (73) is rotatably mounted on the positioning rod (62). The drive gear (74) is fixedly mounted on the screw (612). The linkage gear (73) meshes between the rotating gear ring (72) and the drive gear (74).

5. The water tank air tightness detection device according to claim 4, characterized in that: The outer wall of the positioning rod (62) is provided with a sealing plate (622), and the inner wall of the rotating ring (71) is in contact with the sealing plate (622).

6. The water tank air tightness detection device according to claim 4, characterized in that: The outer wall of the rotating ring (71) is integrally provided with raised texture (711).

7. The water tank airtightness testing device according to claim 3, characterized in that: Positioning bolts (8) are provided through the positioning disk (61) and the positioning right-angle block (11). Several positioning holes (81) are provided on the surface of the workbench (1). The positioning bolts (8) are threadedly connected to the positioning holes (81).

8. The water tank airtightness testing device according to claim 1, characterized in that: A recycling plate (9) is provided below the workbench (1).

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