A bellows sealing detection device

Abstract

The utility model provides a bellows sealing detection device, which relates to the technical field of bellows sealing detection. The bellows sealing detection device includes a detection pool, and a second slide groove is provided on the inner walls on both sides of the detection pool, and a first fixing mechanism and a second fixing mechanism are slidably connected in the second slide groove. The utility model meets the requirements of fixing bellows of different lengths by moving the first fixing mechanism and the second fixing mechanism in the detection pool, and then after the two ends of the bellows are respectively placed in the bottom limit plate, the two ends of the bellows are sealed by the sealing sleeve to keep the inside of the bellows airtight, and at the same time, the top limit plate is moved downward by the cylinder, and the top limit plate presses the bottom limit plate downward, so that the bellows is immersed in the clean water of the detection pool, reducing the situation that the bellows is bent and inconvenient to detect during detection, and the bellows is rotated by the sealing sleeve to meet the detection of other surface areas of the bellows.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows sealing detection, in particular to a bellows sealing detection device. Background Art

[0002] The application range of corrugated pipes is relatively wide. They can be used to prevent moisture in underground cables or as fluid delivery pipes. If used as fluid delivery pipes, their sealing performance must be ensured. Therefore, the sealing performance test of corrugated pipes is a key process in the production of corrugated pipes.

[0003] Chinese patent announcement number: CN210243114U discloses a bellows sealing detection device. The utility model includes a detection pool filled with water, a support frame that slides up and down with the detection pool, and a lifting mechanism and an inflating device that push the support frame to slide up and down; the support frame is provided with at least one set of bellows clamping mechanism composed of clamping cylinders, the clamping mechanism cooperates with the lifting mechanism to control the position of the bellows to be detected in the water, and the inflating device inflates the bellows to be detected, and can relatively accurately locate the leakage point while making an airtightness judgment, thereby improving the airtightness detection efficiency of the bellows.

[0004] It can be seen that in order to find the leaking part of the bellows in time in the prior art, the bellows is immersed in water for detection. This detection method is to seal and clamp the two ends of the bellows by driving the clamping mechanism through a cylinder to achieve detection. This method of fixing the bellows is not convenient for fixing longer bellows. When the bellows is long, the bellows is affected by gravity, and the middle part of the tube body will bend downward, which is not conducive to sealing detection. At the same time, the side of the bellows located in the water is not convenient for inspection personnel to observe. Utility Model Content

[0005] The purpose of the utility model is to provide a bellows sealing detection device, which can avoid the problem that the existing bellows fixing method is inconvenient for fixing longer bellows. When the bellows is longer, the bellows is affected by gravity, and the middle tube body will bend downward, which is not conducive to sealing detection. At the same time, the side of the bellows located in the water is not convenient for the detection personnel to observe.

[0006] The utility model provides a bellows sealing detection device, comprising a detection pool, wherein second sliding grooves are provided on the inner walls on both sides of the detection pool, and a first fixing mechanism and a second fixing mechanism are slidably connected in the second sliding grooves, and the first fixing mechanism and the second fixing mechanism respectively fix the two ends of the bellows, wherein one end of the first fixing mechanism is connected to an inflation tube, and the air inlet of the inflation tube is connected to an inflation pump.

[0007] In a specific embodiment, the first fixing mechanism has the same structure as the second fixing mechanism, and the first fixing mechanism includes an outer frame located in the detection pool, and sliders are provided on both sides of the outer frame, and the sliders are slidably connected to the second slide groove, and limiting grooves are provided on both sides of the outer frame, and a bottom limiting plate is slidably provided in the limiting groove.

[0008] In a specific embodiment, a cylinder is installed at the upper end of the outer frame, a piston end of the cylinder is connected to a top limit plate, and the top limit plate is located on the upper side of the top limit plate.

[0009] In a specific implementation, a plurality of springs are disposed at the bottom of the outer frame, and the upper ends of the springs are connected to the top limiting plate.

[0010] In a specific implementation scheme, a side plate is provided on one side of the bottom limiting plate, a sealing sleeve is rotatably provided on the side plate, a fixing plate 1 is provided on the outer side of the sealing sleeve, a fixing plate 2 is provided on one side of the fixing plate 1, and the fixing plates 1 and 2 are connected by screws.

[0011] In a specific embodiment, an annular sleeve is disposed in the through groove formed in the side plate, an annular groove is formed on the outer side of the sealing sleeve, and the annular sleeve is rotatably connected to the annular groove.

[0012] In a specific implementation manner, straight grooves are symmetrically provided on the second fixing plate, and the straight grooves are slidably connected to the backing plate.

[0013] In a specific embodiment, a limiting rod is arranged in the straight groove, and the limiting rod passes through the backing plate and is slidably connected to the backing plate.

[0014] In a specific implementation manner, first slide grooves are provided on both sides of the detection pool, a support rod is slidably arranged in the first slide groove, a plurality of arc grooves are provided on the support rod, and a semi-ring sleeve is inserted in the arc groove.

[0015] In a specific embodiment, a screw rod is rotatably disposed in one of the first sliding grooves, and the screw rod is threadedly connected to one side of the support rod.

[0016] Compared with the prior art, the bellows sealing detection device provided in the embodiment of the utility model has the following advantages:

[0017] 1. The utility model fixes bellows of different lengths by moving the first fixing mechanism and the second fixing mechanism in the detection tank, and then respectively places the two ends of the bellows into the bottom limit plate, and then uses the sealing sleeve to seal the two ends of the bellows to keep the inside of the bellows airtight. At the same time, the top limit plate is moved downward by the cylinder, and the top limit plate presses the bottom limit plate downward to immerse the bellows in the clean water of the detection tank, thereby reducing the situation where the bellows is bent and inconvenient to detect during detection. The bellows is rotated by the sealing sleeve to meet the detection of other surface areas of the bellows and improve the detection efficiency.

[0018] 2. The utility model supports the middle section of the bellows by arranging a movable support rod in the detection pool, thereby further preventing the longer bellows from bending. At the same time, after the semi-annular sleeve is moved to the leaking part of the bellows, the semi-annular sleeve can be separated from the support rod, so that the leaking part of the bellows can be marked by the semi-annular sleeve, eliminating the need to find the leaking part again after the detection is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the following is a brief introduction to the drawings required for use in the implementation mode. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 It is a schematic cross-sectional view of the overall structure of an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the first fixing mechanism of an embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the outer frame machine of an embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the disassembly of the side plate and the fixing plate structure of an embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the structural disassembly of the fixing plate 1 and the fixing plate 2 of an embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the sealing sleeve structure of an embodiment of the utility model;

[0027] Figure 8This is a schematic diagram of the support rod structure of an embodiment of the utility model.

[0028] Reference numerals:

[0029] 1. Detection pool; 2. First fixing mechanism; 21. Outer frame; 22. Slider; 23. Limiting groove; 24. Spring; 25. Cylinder; 26. Top limiting plate; 27. Bottom limiting plate; 28. Side plate; 281. Annular sleeve; 29. ​​Fixing plate one; 291. Screw; 292. Fixing plate two; 293. Sealing sleeve; 294. Annular groove; 295. Straight groove; 296. Limiting rod; 297. Pad; 3. Second fixing mechanism; 4. Inflating tube; 5. Inflating pump; 6. First slide groove; 7. Second slide groove; 8. Support rod; 81. Arc groove; 82. Semi-annular sleeve; 9. Screw. DETAILED DESCRIPTION

[0030] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0031] Embodiment 1

[0032] Please refer to Figures 1 to 8 The embodiment of the utility model provides a bellows sealing detection device, including a detection pool 1, and second slide grooves 7 are opened on the inner walls on both sides of the detection pool 1. The first fixing mechanism 2 and the second fixing mechanism 3 are slidably connected in the second slide groove 7. The first fixing mechanism 2 and the second fixing mechanism 3 respectively fix the two ends of the bellows.

[0033] Among them, the first fixing mechanism 2 and the second fixing mechanism 3 have the same structure. The first fixing mechanism 2 includes an outer frame 21 located in the detection pool 1, and sliders 22 are provided on both sides of the outer frame 21. The sliders 22 are slidably connected with the second slide groove 7 to adjust the position of the outer frame 21 so that the first fixing mechanism 2 and the second fixing mechanism 3 can meet the needs of fixing corrugated pipes of different lengths. At the same time, limiting grooves 23 are opened on both sides of the outer frame 21, and a bottom limiting plate 27 is slidably arranged in the limiting groove 23. A plurality of semi-annular grooves are opened on the upper side of the bottom limiting plate 27, and the corrugated pipe is placed in the semi-annular grooves.

[0034] A cylinder 25 is installed at the upper end of the outer frame 21, and the piston end of the cylinder 25 is connected to the top limit plate 26. The top limit plate 26 is located on the upper side of the top limit plate 26, and a plurality of semi-annular grooves are provided on the lower side of the top limit plate 26. After the top limit plate 26 is lowered by the cylinder 25, the top limit plate 26 limits the upper side of the bellows, and the bellows is restricted between the top limit plate 26 and the bottom limit plate 27, thereby completing the restriction of the bellows.

[0035] In addition, a side plate 28 is provided on one side of the bottom limit plate 27, and a sealing sleeve 293 is rotatably provided on the side plate 28. A fixing plate 1 29 is provided on the outer side of the sealing sleeve 293, and a fixing plate 2 292 is provided on one side of the fixing plate 1 29. The fixing plate 1 29 and the fixing plate 2 292 are connected by a screw 291. The sealing sleeve 293 is inserted into the interior of the bellows, and the fixing plate 2 292 is pushed toward the fixing plate 1 29 so that the fixing plate 2 292 slides on the screw 291, and the fixing plate 2 292 is fixed by a nut, so that the fixing plate 2 292 and the fixing plate 1 29 are fixed to one end of the bellows and the bellows are sealed at the same time.

[0036] Furthermore, straight grooves 295 are symmetrically provided on the fixing plate 292, and the straight grooves 295 are slidably connected to the pad 297. A limiting rod 296 is provided in the straight groove 295, and the limiting rod 296 passes through the pad 297 and is slidably connected to the pad 297. The pad 297 will not be separated from the straight groove 295 due to the limitation of the limiting rod 296. At the same time, since the opening on the fixing plate 292 is relatively large, the pad 297 can be slid downward when the bellows passes through the fixing plate 292. The pad 297 is used to prevent the fixing plate 292 from being close to the bellows, which makes it inconvenient to fix the bellows.

[0037] Since one end of the first fixing mechanism 2 is connected to the inflation tube 4, and the air inlet of the inflation tube 4 is connected to the inflation pump 5, during detection, the gas is transported to the inflation tube 4 through the inflation pump 5, and the inflation tube 4 is connected to the sealing sleeve 293, so the gas is finally input into the bellows, and the top limit plate 26 is installed downwardly through the cylinder 25, so that the top limit plate 26 presses the bottom limit plate 27, thereby immersing the bellows in the clean water of the detection pool 1, and the leakage of the bellows is judged by whether bubbles are generated in the water.

[0038] In order to allow the bellows to float upward when not pressed, a plurality of springs 24 are provided at the bottom of the outer frame 21. The upper ends of the springs 24 are connected to the top limit plates 26. The springs 24 are squeezed downward when the bellows are immersed in water. Therefore, when the springs 24 are not subjected to force, the bottom limit plates 27 float upward due to the elasticity of the springs 24, making it easier to remove the bellows.

[0039] In summary, according to the length of the bellows that needs to be tested, the spacing between the first fixing mechanism 2 and the second fixing mechanism 3 is adjusted, and after the two ends of the bellows are respectively placed in the bottom limit plates 27 at both ends, the cylinder 25 descends with the top limit plate 26, so that the top limit plate 26 limits the bellows. At this time, the sealing sleeve 293 is used to seal the bellows, and the bellows is sealed and fixed in combination with the fixing plate 1 29 and the fixing plate 2 292, so that the bellows is less bent during testing, and the leaking part can be quickly found after the bellows is sealed and tested with clean water.

[0040] Embodiment 2

[0041] When testing the bellows, if the bellows leaks at the underwater position, it is difficult to leak due to its position. Therefore, an annular sleeve 281 is provided in the through groove opened in the side plate 28, and an annular groove 294 is provided on the outer side of the sealing sleeve 293. The annular sleeve 281 is rotatably connected with the annular groove 294 to rotate the sealing sleeve 293, so that the sealing sleeve 293 rotates with the fixing plate 1 29 and the fixing plate 2 292, thereby realizing the rotation of the bellows and facilitating the sealing detection of other parts of the bellows.

[0042] Embodiment 3

[0043] Considering that after the first fixing mechanism 2 and the second fixing mechanism 3 fix the bellows, although the bending of the bellows is reduced to a certain extent, if a long bellows is encountered, the bellows will still bend due to the weight of the bellows, so improvements are made on the basis of the above embodiment, such as Figure 2 As shown, a first slide groove 6 is provided on both sides of the detection pool 1, and a support rod 8 is slidably arranged in the first slide groove 6. A plurality of arc grooves 81 are provided on the support rod 8, and a semi-ring sleeve 82 is inserted in the arc groove 81. The semi-ring sleeve 82 is sleeved on the bellows to support the bellows. The support rod 8 is located inside the detection pool 1, and is used to support the bellows immersed in water, so as to reduce the bending of the bellows. A screw rod 9 is rotatably arranged in one of the first slide grooves 6, and the screw rod 9 is threadedly connected to one side of the support rod 8. The screw rod 9 is driven by a motor. When the screw rod 9 rotates, the support rod 8 moves, thereby adjusting the supporting position of the support rod 8.

[0044] Embodiment 4

[0045] Since the bellows has a certain length, when the bellows is detected to have a leak, if the bellows is not marked, it will be difficult to find the leaking part when the bellows is taken out. Therefore, the semi-annular sleeve 82 is plugged into and matched with the arc groove 81. After the semi-annular sleeve 82 is put on the bellows, it does not affect the rotation of the bellows. At the same time, when the bellows is detected to have a leak, the semi-annular sleeve 82 can be moved to the leaking part. When the bellows needs to be taken out, the semi-annular sleeve 82 is moved to the leaking part of the bellows for marking. The semi-annular sleeve 82 is separated from the arc groove 81 as the bellows is taken out, which is convenient for the inspector to find the leaking part.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bellows sealing detection device, comprising a detection cell (1), characterized in that: A second slide groove (7) is provided on the inner walls on both sides of the detection pool (1), and a first fixing mechanism (2) and a second fixing mechanism (3) are slidably connected in the second slide groove (7). The first fixing mechanism (2) and the second fixing mechanism (3) respectively fix the two ends of the corrugated tube, wherein one end of the first fixing mechanism (2) is connected to the inflation tube (4), and the air inlet of the inflation tube (4) is connected to the inflation pump (5).

2. The bellows sealing detection device according to claim 1, characterized in that: The first fixing mechanism (2) and the second fixing mechanism (3) have the same structure. The first fixing mechanism (2) comprises an outer frame (21) located in the detection pool (1). Slide blocks (22) are arranged on both sides of the outer frame (21). The slide blocks (22) are slidably connected to the second slide groove (7). Limiting grooves (23) are arranged on both sides of the outer frame (21). A bottom limiting plate (27) is slidably arranged in the limiting groove (23).

3. The bellows sealing detection device according to claim 2, characterized in that: A cylinder (25) is installed at the upper end of the outer frame (21); a piston end of the cylinder (25) is connected to a top limit plate (26); and the top limit plate (26) is located on the upper side of the top limit plate (26).

4. The bellows sealing detection device according to claim 3, characterized in that: A plurality of springs (24) are arranged at the bottom of the outer frame (21), and the upper ends of the springs (24) are connected to a top limiting plate (26).

5. The bellows sealing detection device according to claim 4, characterized in that: A side plate (28) is provided on one side of the bottom limiting plate (27), a sealing sleeve (293) is rotatably provided on the side plate (28), a fixing plate 1 (29) is provided on the outer side of the sealing sleeve (293), a fixing plate 2 (292) is provided on one side of the fixing plate 1 (29), and the fixing plate 1 (29) and the fixing plate 2 (292) are connected via a screw rod (291).

6. The bellows sealing detection device according to claim 5, characterized in that: An annular sleeve (281) is arranged in the through groove formed in the side plate (28), an annular groove (294) is formed on the outer side of the sealing sleeve (293), and the annular sleeve (281) is rotatably connected to the annular groove (294).

7. The bellows sealing detection device according to claim 6, characterized in that: The second fixing plate (292) is symmetrically provided with straight grooves (295), and the straight grooves (295) are slidably connected to the pad (297).

8. The bellows sealing detection device according to claim 7, characterized in that: A limiting rod (296) is arranged in the straight groove (295), and the limiting rod (296) passes through the backing plate (297) and is slidably connected to the backing plate (297).

9. The bellows sealing detection device according to claim 1, characterized in that: Both sides of the detection pool (1) are provided with first slide grooves (6), a support rod (8) is slidably arranged in the first slide groove (6), a plurality of arc grooves (81) are provided on the support rod (8), and a semi-ring sleeve (82) is inserted in the arc groove (81).

10. The bellows sealing detection device according to claim 9, characterized in that: A screw rod (9) is rotatably arranged in one of the first sliding grooves (6), and the screw rod (9) is threadedly connected to one side of the support rod (8).

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