Corrugated pipe air tightness tester

Abstract

The utility model discloses a corrugated pipe air tightness tester which comprises a water tank, a drainage pipe is installed at the bottom of one end of the water tank, a hydraulic rod is fixedly installed on the side wall of the water tank, a side plate is fixed at the tail end of the hydraulic rod, a side positioning block is installed on the side plate, and a servo motor is installed at the bottom of the other end of the water tank. A horizontal threaded rod is mounted at the output end of the servo motor and rotationally mounted at the bottom of the inner side of the water tank through a bearing seat, a bottom plate is mounted on the horizontal threaded rod, a mounting frame is fixed to the top surface of the bottom plate, and a vertical threaded rod is fixedly mounted on the inner side of the mounting frame; the vertical threaded rod penetrates through a hole formed in one end of the bottom base plate. The corrugated pipe air tightness tester adopts a novel structural design, not only can stably extrude and plug openings at two ends of straight corrugated pipes with different diameters, but also can stably extrude and plug openings at two ends of an L-shaped corrugated pipe, so that the overall applicability of the device is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, specifically to a bellows airtightness tester. Background Technology

[0002] The airtightness test of the bellows is a key step in ensuring its quality and the safe operation of the system. Its main purpose is to check whether the bellows has good tightness and sealing performance in the weld gap, so as to ensure that the product will not leak during operation.

[0003] Existing bellows airtightness testers can only seal the two ends of straight bellows. However, many bellows in reality are L-shaped, and existing devices cannot seal the two perpendicular ends, making it impossible to test the airtightness of L-shaped bellows, resulting in poor overall applicability. Therefore, a new bellows airtightness tester needs to be designed to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a corrugated pipe airtightness tester to solve the problem mentioned in the background art that the existing device cannot seal the two mutually perpendicular open ends, and therefore cannot perform airtightness testing on "L"-shaped corrugated pipes, resulting in poor overall applicability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a corrugated pipe airtightness tester, comprising a water tank, a drain pipe installed at the bottom of one end of the water tank, a hydraulic rod fixedly installed on the side wall of the water tank, a side plate fixed at the end of the hydraulic rod, a side positioning block installed on the side plate, a servo motor installed at the bottom of the other end of the water tank, a horizontal threaded rod installed at the output end of the servo motor, the horizontal threaded rod being rotatably installed at the bottom of the inner side of the water tank via a bearing seat, a base plate installed on the horizontal threaded rod, a mounting frame fixed on the top surface of the base plate, a vertical threaded rod fixedly installed inside the mounting frame, the vertical threaded rod penetrating a hole opened at one end of the base plate, a bottom positioning block fixed on the top surface of the other end of the base plate, the vertical threaded rod penetrating a hole opened at one end of the top plate, a positioning pad fixed on the bottom surface of the other end of the top plate, and a lower locking nut and an upper locking nut respectively installed at the bottom and top of the vertical threaded rod.

[0006] Preferably, the hydraulic rods are symmetrically distributed about the side plates, and the hydraulic rods, side plates, and side positioning blocks are symmetrically distributed about the center of the water tank.

[0007] Preferably, both the side positioning block and the bottom positioning block are configured as frustum shapes, and the center of the side positioning block and the center of the bottom positioning block are on the same vertical plane.

[0008] Preferably, the horizontal threaded rods are symmetrically distributed about the center of the base plate, and the horizontal threaded rods are threadedly connected to the base plate.

[0009] Preferably, the sides of the base plate and the sides of the mounting frame are both in contact with the inner wall of the water tank, and vertical threaded rods are symmetrically fixed at both ends of the inner side of the mounting frame.

[0010] Preferably, the vertical threaded rod is slidably connected to the holes at one end of the bottom plate and the top plate, and a lower locking nut and an upper locking nut are symmetrically installed on the vertical threaded rods at the top and bottom of the holes on the bottom plate and the top plate, respectively.

[0011] Preferably, the center of the bottom positioning block and the center of the positioning pad are on the same vertical plane, and the bottom diameter of the bottom positioning block is smaller than the side-view length of the positioning pad.

[0012] Preferably, sealing gaskets are fixedly installed on the outer curved surfaces of both the side positioning block and the bottom positioning block, and the thickness of the sealing gaskets is greater than 1 / 6 of the top diameter of the side positioning block.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the corrugated pipe air tightness tester adopts a novel structural design, which can not only stably squeeze and seal the openings at both ends of straight corrugated pipes of different diameters, but also stably squeeze and seal the openings at both ends of "L" shaped corrugated pipes, greatly improving the overall applicability of the device.

[0014] 1. The symmetrically distributed hydraulic rods, side plates and side positioning blocks ensure the compression and sealing effect on the openings at both ends of straight bellows of different sizes. When conducting airtightness tests on "L" shaped bellows, the horizontal opening end of the bellows can also be stably sealed.

[0015] 2. The horizontal threaded rod is driven to rotate by a servo motor. The horizontal threaded rod drives the base plate, mounting frame, vertical threaded rod, bottom base plate, bottom positioning block, top base plate and positioning pad to move horizontally through the threaded connection. The lower locking nut and upper locking nut are used to adjust and fix the height of the bottom base plate and top base plate, so that the bottom positioning block and positioning pad can stably squeeze the vertical opening of the "L" shaped corrugated pipe and achieve stable sealing. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present invention;

[0017] Figure 2 This is a frontal cross-sectional view of the present invention.

[0018] Figure 3 This is a side view of the bottom substrate and top substrate of this utility model;

[0019] Figure 4This is a top view sectional diagram of the mounting frame of this utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the bottom positioning block of this utility model.

[0021] In the diagram: 1. Water tank; 2. Drain pipe; 3. Hydraulic rod; 4. Side plate; 5. Side positioning block; 6. Servo motor; 7. Horizontal threaded rod; 8. Base plate; 9. Mounting frame; 10. Vertical threaded rod; 11. Bottom base plate; 12. Bottom positioning block; 13. Top base plate; 14. Positioning pad; 15. Lower locking nut; 16. Upper locking nut; 17. Sealing gasket. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 This utility model provides a technical solution: a corrugated pipe airtightness tester, comprising a water tank 1, a drain pipe 2, a hydraulic rod 3, a side plate 4, a side positioning block 5, a servo motor 6, a horizontal threaded rod 7, a base plate 8, a mounting frame 9, a vertical threaded rod 10, a bottom base plate 11, a bottom positioning block 12, a top base plate 13, a positioning pad 14, a lower locking nut 15, an upper locking nut 16, and a sealing gasket 17. A drain pipe 2 is installed at one end of the bottom of the water tank 1. A hydraulic rod 3 is fixedly installed on the side wall of the water tank 1, and a side plate 4 is fixed to the end of the hydraulic rod 3. A side positioning block 5 is installed on the side plate 4. A servo motor 6 is installed at the other end of the bottom of the water tank 1. A horizontal threaded rod 7 is installed at the output end of the servo motor 6. The horizontal threaded rod 7 is rotatably installed at the bottom of the inner side of the water tank 1 through a bearing seat. A base plate 8 is installed on the horizontal threaded rod 7. A mounting frame 9 is fixed on the top surface of the base plate 8. A vertical threaded rod 10 is fixedly installed inside the mounting frame 9. The vertical threaded rod 10 passes through a hole opened at one end of the base plate 11. A bottom positioning block 12 is fixed on the top surface of the other end of the base plate 11. The vertical threaded rod 10 passes through a hole opened at one end of the top plate 13. A positioning pad 14 is fixed on the bottom surface of the other end of the top plate 13. A lower locking nut 15 and an upper locking nut 16 are respectively installed at the bottom and top of the vertical threaded rod 10.

[0024] In this example, the hydraulic rod 3 is symmetrically distributed about the side plate 4, and the hydraulic rod 3, side plate 4 and side positioning block 5 are symmetrically distributed about the center of the water tank 1. The above structural design can stably squeeze and seal the openings at both ends of the straight corrugated pipe from the horizontal direction.

[0025] Both the side positioning block 5 and the bottom positioning block 12 are set in the shape of a frustum. The center of the side positioning block 5 and the center of the bottom positioning block 12 are on the same vertical plane. The above structural design enables the side positioning block 5 and the bottom positioning block 12 to be stably inserted into the openings of bellows of different diameters and to seal the bellows of different diameters.

[0026] The horizontal threaded rod 7 is symmetrically distributed about the center of the base plate 8. The horizontal threaded rod 7 is threadedly connected to the base plate 8. The above structural design enables the horizontal threaded rod 7 to stably drive the base plate 8 to move linearly when rotating.

[0027] Both the sides of the base plate 8 and the sides of the mounting frame 9 are in contact with the inner wall of the water tank 1. Vertical threaded rods 10 are symmetrically fixed at both ends of the inner side of the mounting frame 9. The above structural design enables the base plate 8 and the mounting frame 9 to move stably in a straight line along the inner wall of the water tank 1, and ensures that the bottom plate 11 and the top plate 13 inside the mounting frame 9 can be stably installed and adjusted.

[0028] The vertical threaded rod 10 is slidably connected to the holes at one end of the bottom plate 11 and the top plate 13. Lower locking nuts 15 and upper locking nuts 16 are symmetrically installed on the vertical threaded rod 10 at the top and bottom of the holes on the bottom plate 11 and the top plate 13, respectively. The above structural design allows the bottom plate 11 and the top plate 13 to slide vertically along the vertical threaded rod 10 to adjust their installation position, and can be quickly locked by the symmetrically distributed lower locking nuts 15 and upper locking nuts 16, respectively.

[0029] The center of the bottom positioning block 12 and the center of the positioning pad 14 are on the same vertical plane. The bottom diameter of the bottom positioning block 12 is smaller than the side length of the positioning pad 14. The above structural design can ensure stable sealing and positioning of the vertical opening of the corrugated pipe.

[0030] Sealing gaskets 17 are fixedly installed on the outer curved surfaces of both the side positioning block 5 and the bottom positioning block 12. The thickness of the sealing gasket 17 is greater than 1 / 6 of the top diameter of the side positioning block 5. The above structural design can ensure that the sealing gasket 17 fits tightly against the inner wall of the bellows, thus ensuring the sealing effect.

[0031] Working principle: When testing the straight corrugated pipe, simply place the straight corrugated pipe horizontally between the symmetrically distributed side positioning blocks 5, aligning the center of the straight corrugated pipe with the center of the side positioning blocks 5. Control the extension of the symmetrically distributed hydraulic rods 3 to push the side plate 4 and move the side positioning blocks 5 horizontally. The side positioning blocks 5 are inserted into the openings at both ends of the straight corrugated pipe, and the sealing gaskets 17 are tightly fitted to the inner wall of the opening of the straight corrugated pipe to complete the sealing. Add water to the water tank 1 until it covers the straight corrugated pipe, and then drain the water in the water tank 1 through the drain pipe 2. Control the hydraulic rods 3 to shorten, release the fixation of the straight corrugated pipe, and observe whether there is water in the straight corrugated pipe.

[0032] When testing an "L"-shaped corrugated pipe, the horizontal opening of the "L"-shaped corrugated pipe is connected to... Figure 2 The side positioning block 5 on the right side is aligned. At this time, the vertical opening of the "L"-shaped corrugated pipe is vertically downward. Then, the servo motor 6 is controlled to drive the horizontal threaded rod 7 to rotate. The horizontal threaded rod 7 drives the base plate 8 and the mounting frame 9 to move horizontally through the threaded connection until the bottom positioning block 12 is vertically aligned with the vertical opening of the "L"-shaped corrugated pipe. The servo motor 6 is then controlled to stop working and lock the horizontal threaded rod 7. The horizontal threaded rod 7 uses the self-locking thread to lock the horizontal position of the base plate 8 and the mounting frame 9. Then, the lower locking nut 15 and the upper locking nut 16 are rotated away from the upper and lower end faces of the bottom plate 11 and the top plate 13, respectively, pushing the bottom plate 11 and the top plate 13 to slide along the vertical threaded rod 10 until the bottom plate 11... The bottom positioning block 12 installed on the 11 is inserted into the opening of the vertical part of the "L"-shaped corrugated pipe. The positioning pad 14 installed on the top plate 13 fits tightly with the bend of the "L"-shaped corrugated pipe. The lower locking nut 15 and the upper locking nut 16 are rotated and reset respectively to press the upper and lower end faces of the bottom plate 11 and the top plate 13 to fix them. The bottom positioning block 12 and the bottom positioning block 12 stably seal and position the opening of the vertical part of the "L"-shaped corrugated pipe. The steps described above can be repeated. Water is added to the water tank 1. After the water level is above the "L"-shaped corrugated pipe, the water is discharged through the drain pipe 2. The "L"-shaped corrugated pipe is removed and the presence of water inside the "L"-shaped corrugated pipe is observed. This is the working principle of the corrugated pipe airtightness tester.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrugated pipe airtightness tester, comprising a water tank (1), characterized in that: A drain pipe (2) is installed at the bottom of one end of the water tank (1). A hydraulic rod (3) is fixedly installed on the side wall of the water tank (1). A side plate (4) is fixed at the end of the hydraulic rod (3). A side positioning block (5) is installed on the side plate (4). A servo motor (6) is installed at the bottom of the other end of the water tank (1). A horizontal threaded rod (7) is installed at the output end of the servo motor (6). The horizontal threaded rod (7) is rotatably installed on the bottom of the inner side of the water tank (1) through a bearing seat. A base plate (8) is installed on the horizontal threaded rod (7). A mounting frame (9) is fixed on the top surface. A vertical threaded rod (10) is fixedly installed inside the mounting frame (9). The vertical threaded rod (10) passes through a hole opened at one end of the bottom base plate (11). A bottom positioning block (12) is fixed on the top surface of the other end of the bottom base plate (11). The vertical threaded rod (10) passes through a hole opened at one end of the top base plate (13). A positioning pad (14) is fixed on the bottom surface of the other end of the top base plate (13). A lower locking nut (15) and an upper locking nut (16) are respectively installed at the bottom and top of the vertical threaded rod (10).

2. The bellows airtightness tester according to claim 1, characterized in that: The hydraulic rod (3) is symmetrically distributed about the side plate (4), and the hydraulic rod (3), side plate (4) and side positioning block (5) are symmetrically distributed about the center of the water tank (1).

3. The bellows airtightness tester according to claim 1, characterized in that: Both the side positioning block (5) and the bottom positioning block (12) are set in the shape of a frustum, and the center of the side positioning block (5) and the center of the bottom positioning block (12) are on the same vertical plane.

4. The bellows airtightness tester according to claim 1, characterized in that: The horizontal threaded rod (7) is symmetrically distributed about the center of the base plate (8), and the horizontal threaded rod (7) is threadedly connected to the base plate (8).

5. The bellows airtightness tester according to claim 1, characterized in that: The sides of the base plate (8) and the mounting frame (9) are both in contact with the inner wall of the water tank (1), and vertical threaded rods (10) are symmetrically fixed at both ends of the inner side of the mounting frame (9).

6. The bellows airtightness tester according to claim 1, characterized in that: The vertical threaded rod (10) is slidably connected to the holes at one end of the bottom plate (11) and the top plate (13). The bottom and top vertical threaded rods (10) at the top and bottom of the holes on the bottom plate (11) and the top plate (13) are respectively symmetrically equipped with a lower locking nut (15) and an upper locking nut (16).

7. The bellows airtightness tester according to claim 1, characterized in that: The center of the bottom positioning block (12) and the center of the positioning pad (14) are on the same vertical plane, and the bottom diameter of the bottom positioning block (12) is smaller than the side length of the positioning pad (14).

8. The bellows airtightness tester according to claim 1, characterized in that: Sealing gaskets (17) are fixedly installed on the outer curved surfaces of both the side positioning block (5) and the bottom positioning block (12). The thickness of the sealing gaskets (17) is greater than 1 / 6 of the top diameter of the side positioning block (5).

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