A steel pipe welding portion tightness detection mechanism

Abstract

The utility model relates to steel pipe welding place leakproofness detection technical field, concretely relates to a kind of steel pipe welding place leakproofness detection mechanism, including water storage tank, and the motor being set in the inside of water storage tank, motor output end is fixedly connected with rotating plate, rotating plate one end is rotatably connected with rectangular slide, at least two clamping plates are provided in the inside of water storage tank, one side of one clamping plate is penetrated and is provided with rectangular sliding slot, rectangular slide is slidably connected in the inside of rectangular sliding slot, at least two expansion plates are provided in the inside of two clamping plates, two clamping plates are fixedly connected by expansion plate, and the inside of two expansion plates is fixedly connected with cylindrical seal piece. The utility model, by controlling motor rotating direction and the contraction and elongation of pneumatic cylinder, the leakproofness of steel pipe welding place can be detected, and the convenience of operation is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe weld sealing test technology, specifically a steel pipe weld sealing test mechanism. Background Technology

[0002] The sealing test of steel pipe weld joints is a key process to ensure that the welded joints are leak-free and meet the requirements for media (such as gas and liquid) barrier. It is widely used in pipeline engineering, pressure vessels, chemical equipment and other fields.

[0003] Existing methods for testing the sealing of welded steel pipes typically involve placing the welded steel pipe vertically and manually adding water to the inside of the pipe. The method then observes whether there is any leakage at the welded joint to test the sealing of the welded joint. However, this testing method is quite complicated and labor-intensive.

[0004] Therefore, a steel pipe weld sealing test mechanism is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a steel pipe weld joint sealing test mechanism, which can solve the problem of the relatively complex sealing test of steel pipe weld joints.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a water storage tank and a motor disposed inside the water storage tank. A protective frame is fitted around the outside of the motor, and the output end of the motor is through-connected to the protective frame. One end of the protective frame is fixedly connected to the inside of the water storage tank. A rotating plate is fixedly connected to the output end of the motor, and a rectangular slider is rotatably connected to one end of the rotating plate. At least two clamping plates are disposed inside the water storage tank. One clamping plate has a rectangular groove through-cut on one side, and the rectangular slider is slidably connected to the inside of the rectangular groove. At least two telescopic plates are disposed inside the two clamping plates, and the two clamping plates are fixedly connected via the telescopic plates. A cylindrical seal is fixedly connected to the inside of each of the two telescopic plates. An air inflator is fixedly connected to the outside of the water storage tank, and an air supply pipe is internally connected to the air inflator. One end of the air supply pipe is connected to the cylindrical seal.

[0007] Preferably, sliders are fixedly connected to both sides of the two clamping plates, and a sliding groove is provided on the outer side of each of the sliders, and the sliders are slidably connected to the sliding grooves.

[0008] Preferably, at least two fixing plates are fixedly connected to the inner side of the lower end of the water storage tank, and a limiting groove is opened through one side of each of the two fixing plates. One end of the groove is slidably connected to the inner side of the limiting groove.

[0009] Preferably, each of the two clamping plates is fixedly connected to a telescopic slider at its lower end. A second sliding groove is provided on the outer side of the telescopic slider. The second sliding groove is fixedly connected to the inner side of the lower end of the water storage tank. The telescopic slider is slidably connected to the second sliding groove.

[0010] Preferably, each of the two slides is rotatably connected to a pull rod on one side, and a swing plate is provided on one side of each of the two pull rods, with each of the two pull rods rotatably connected to one side of the swing plate.

[0011] Preferably, a push plate is fixedly connected to one side of the swing plate, and a cylinder is provided on one side of the push plate.

[0012] Preferably, the cylinder output end is rotatably connected to the push plate, an L-shaped plate is provided below the cylinder, the cylinder is rotatably connected to the upper end of the L-shaped plate, and a protective sleeve is provided on the outside of the cylinder, with the cylinder output end and the protective sleeve being through-connected.

[0013] Compared with the prior art, this utility model provides a steel pipe weld sealing test mechanism, which has the following advantages:

[0014] 1. By controlling the direction of motor rotation and the contraction and extension of the cylinder, the sealing performance of the welded joint of the steel pipe can be tested, improving the convenience of operation.

[0015] 2. By controlling the movement of the clamping plate, the steel pipe can be sealed, thus improving the stability of the clamping. Attached Figure Description

[0016] Figure 1 This is a top view of the overall structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the lifting mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the clamping structure of this utility model.

[0020] In the diagram: 1. Water storage tank; 2. Motor; 3. Rotating plate; 4. Clamping plate; 5. Rectangular slider; 6. Telescopic plate; 7. Telescopic slider; 8. Slide 2; 9. Slider; 10. Slide 1; 11. Fixed plate; 12. L-shaped plate; 13. Pull rod; 14. Swing plate; 15. Push plate; 16. Cylinder; 17. Cylindrical seal; 18. Air inflator; 19. Air supply pipe. Detailed Implementation

[0021] 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.

[0022] Example:

[0023] Please see Figure 1 - Figure 4 This embodiment of a steel pipe weld sealing test mechanism includes a water storage tank 1 and a motor 2 disposed inside the water storage tank 1. A protective frame is fitted on the outside of the motor 2. The output end of the motor 2 is connected to the protective frame through the motor. One end of the protective frame is fixedly connected to the inside of the water storage tank 1. A rotating plate 3 is fixedly connected to the output end of the motor 2. A rectangular slider 5 is rotatably connected to one end of the rotating plate 3. At least two clamping plates 4 are disposed inside the water storage tank 1. A rectangular groove is opened through one side of one of the clamping plates 4. The rectangular slider 5 is slidably connected to the inside of the rectangular groove. At least two telescopic plates 6 are disposed inside the two clamping plates 4. The two clamping plates 4 are fixedly connected through the telescopic plates 6. A cylindrical seal 17 is fixedly connected to the inside of both telescopic plates 6. An air inflator 18 is fixedly connected to the outside of the water storage tank 1. An air supply pipe 19 is connected inside the air inflator 18. One end of the air supply pipe 19 is connected to the cylindrical seal 17.

[0024] Both sides of the two clamping plates 4 are fixedly connected to sliders 9, and several sliders 9 are provided with sliding grooves 10 on their outer sides, and the sliders 9 are slidably connected to the sliding grooves 10.

[0025] At least two fixing plates 11 are fixedly connected to the inner side of the lower end of the water storage tank 1. A limiting groove is opened through one side of each fixing plate 11. One end of the groove 10 is slidably connected to the inner side of the limiting groove.

[0026] Both clamping plates 4 are fixedly connected to telescopic sliders 7 at their lower ends. The telescopic sliders 7 are provided with a second slide groove 8 on their outer side. The second slide groove 8 is fixedly connected to the inner side of the lower end of the water storage tank 1. The telescopic sliders 7 and the second slide groove 8 are slidably connected.

[0027] The methods of rotating the rotating plate 3 via motor 2, inflating the cylindrical seal 17 via air inflator 18, and pushing the push plate 15 via cylinder 16 are all existing technologies. Therefore, they are not described in detail in this embodiment.

[0028] At this time, the welded steel pipe is lifted by a manually operated hoist. The pushing device pulls the pushing component, causing the swinging component to rotate clockwise by a certain angle. The swinging component pushes the two slides 10 outwards, and the two clamping plates 4 move along with the slides 10, increasing the distance between them. One end of the steel pipe is then engaged with the cylindrical seal 17. After sealing one end of the cylindrical seal 17, the pushing device pushes the pushing component, decreasing the distance between the two clamping plates 4. The two clamping plates 4 then contract to clamp the steel pipe, and the cylindrical seal inside the other clamping plate 4... The sealing element 17 will be snapped onto the other end of the steel pipe to achieve the effect of sealing both ends of the steel pipe. After the two ends of the steel pipe are sealed, the motor 2 drives the rotating plate 3 to rotate forward. When the rotating plate 3 rotates, it will pull the rectangular slider 5 to move synchronously. By sliding the rectangular slider 5 on the inside of the rectangular groove, when the rectangular slider 5 moves with the rotating plate 3 on the right side of the rectangular groove, the clamping plate 4 will move downward with the rightward movement of the rectangular slider 5. The lower end of the clamping plate 4 is provided with a telescopic slider 7. The upper end of the telescopic slider 7 is connected to the clamping plate 4 by a rectangular telescopic block, which can extend and shorten with the up and down movement of the clamping plate 4.

[0029] When the rotating plate 3 rotates to be parallel to the ground, the rectangular slider 5 moves to the rightmost side of the rectangular chute, and the clamping plate 4 moves below the water surface of the water storage tank 1. The steel pipe follows the clamping plate 4 and moves below the water surface. By starting the air compressor 18, the air compressor 18 inflates the cylindrical seal 17 through the air supply pipe 19. When the cylindrical seal 17 is continuously inflated, the gas inside the cylindrical seal 17 will enter the steel pipe. The inflation time of the air compressor 18 is determined by the volume of the steel pipe. After inflation continues for a period of time, if no continuous bubbles overflow from the water storage tank 1, then... The steel pipe weld joint has good sealing performance. However, if there are continuous bubbles inside the water storage tank 1, the steel pipe weld joint has poor sealing performance and there are weld defects. The bubble locations are marked manually. At this time, the motor 2 is reversed to control the push device to retract, thereby releasing the position limit of the steel pipe. The steel pipe is then lifted by a hoist controlled by the hoist and moved to the welding area to re-weld the weld defects. The gas supply pipe 19 is a flexible hose and is relatively long, so it will not get tangled due to the up and down movement of the clamping plate 4.

[0030] Each of the two slides 10 is rotatably connected to a pull rod 13 on one side, and a swing plate 14 is provided on one side of each of the two pull rods 13. Each of the two pull rods 13 is rotatably connected to one side of the swing plate 14.

[0031] A push plate 15 is fixedly connected to one side of the swing plate 14, and a cylinder 16 is provided on one side of the push plate 15;

[0032] The output end of cylinder 16 is rotatably connected to push plate 15. An L-shaped plate 12 is provided below cylinder 16. Cylinder 16 is rotatably connected to the upper end of L-shaped plate 12. A protective sleeve is provided on the outside of cylinder 16. The output end of cylinder 16 and the protective sleeve are connected through each other.

[0033] In this system, the output end of cylinder 16 is rotatably connected to push plate 15, and push plate 15 is fixedly connected to swing plate 14. When cylinder 16 pushes push plate 15, push plate 15 will rotate at a certain angle following the push of cylinder 16. Two pull rods 13 are rotatably connected to swing plate 14. When swing plate 14 rotates, it pushes the two pull rods 13. The two pull rods 13 are rotatably connected to two slide grooves 10 respectively. When the pull rods 13 move, they push slide grooves 10. By controlling the contraction and extension of cylinder 16, the distance between the two clamping plates 4 can be controlled, thereby clamping the steel pipe. The control of release and release improves the stability of clamping. The protective frame on the outside of motor 2 protects motor 2, and a waterproof sealing ring is set at the connection between the output end of motor 2 and the protective frame to prevent liquid from entering the motor 2 and causing damage. The protective sleeve on the outside of cylinder 16 protects cylinder 16, and a waterproof sealing ring is set at the connection between the output end of cylinder 16 and the protective sleeve to prevent liquid from entering the cylinder 16 and causing damage. The L-shaped plate 12 can fix the position of cylinder 16 to prevent cylinder 16 from shaking when pushing push plate 15, thus improving the stability of clamping.

[0034] The working principle of the above embodiments is as follows:

[0035] In use, the control cylinder 16 pulls the push plate 15, and the two pull rods 13 push the two slides 10 outward. The two clamping plates 4 move outward along with the slides 10. The welded steel pipe is lifted by a hoist operated manually. One end of the steel pipe is engaged with the cylindrical seal 17. At this time, the control cylinder 16 pushes the push plate 15, reducing the distance between the two clamping plates 4. The two clamping plates 4 retract to clamp the steel pipe. The motor 2 drives the rotating plate 3. When the rotating plate 3 rotates to be parallel to the ground, the rectangular slider 5 moves to the rightmost side of the rectangular slide groove, the clamping plate 4 moves below the water surface of the water storage tank 1, and the steel pipe moves below the water surface along with the clamping plate 4. The air inflator 18 inflates the cylindrical seal 17 through the air supply pipe 19. When there are continuous bubbles overflowing from the outside of the steel pipe, the air tightness of the steel pipe is poor. By marking the leaking parts and moving the steel pipe to the welding area for re-welding, the air tightness of the steel pipe is good when there are no continuous bubbles overflowing from the outside of the steel pipe.

[0036] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0037] 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 sealing test mechanism for steel pipe weld joints, characterized in that: The device includes a water storage tank (1) and a motor (2) disposed inside the water storage tank (1). A protective frame is fitted around the motor (2), and the output end of the motor (2) is connected through the protective frame. One end of the protective frame is fixedly connected to the inside of the water storage tank (1). A rotating plate (3) is fixedly connected to the output end of the motor (2), and a rectangular slider (5) is rotatably connected to one end of the rotating plate (3). At least two clamping plates (4) are provided inside the water storage tank (1), and one of the clamping plates (4) has a rectangular opening through one side. The rectangular slider (5) is slidably connected to the inner side of the rectangular slide groove. At least two telescopic plates (6) are provided on the inner side of the two clamping plates (4). The two clamping plates (4) are fixedly connected by the telescopic plates (6). A cylindrical seal (17) is fixedly connected to the inner side of the two telescopic plates (6). An air compressor (18) is fixedly connected to the outer side of the water storage tank (1). An air supply pipe (19) is connected inside the air compressor (18). One end of the air supply pipe (19) is connected to the cylindrical seal (17).

2. The sealing test mechanism for steel pipe weld joints according to claim 1, characterized in that: Both sides of the two clamping plates (4) are fixedly connected with sliders (9), and a sliding groove (10) is provided on the outer side of several sliders (9), and the sliders (9) are slidably connected to the sliding grooves (10).

3. The sealing test mechanism for steel pipe weld joints according to claim 2, characterized in that: At least two fixing plates (11) are fixedly connected to the inner side of the lower end of the water storage tank (1). A limiting groove is opened through one side of each of the two fixing plates (11). One end of the groove (10) is slidably connected to the inner side of the limiting groove.

4. The sealing test mechanism for steel pipe weld joints according to claim 3, characterized in that: Both clamping plates (4) are fixedly connected to telescopic sliders (7) at their lower ends. A second sliding groove (8) is provided on the outer side of the telescopic slider (7). The second sliding groove (8) is fixedly connected to the inner side of the lower end of the water storage tank (1). The telescopic slider (7) is slidably connected to the second sliding groove (8).

5. The sealing test mechanism for steel pipe weld joints according to claim 2, characterized in that: Each of the two slides (10) is rotatably connected to a pull rod (13) on one side, and a swing plate (14) is provided on one side of each of the two pull rods (13). Each of the two pull rods (13) is rotatably connected to one side of the swing plate (14).

6. The sealing test mechanism for steel pipe weld joints according to claim 5, characterized in that: A push plate (15) is fixedly connected to one side of the swing plate (14), and a cylinder (16) is provided on one side of the push plate (15).

7. The sealing test mechanism for steel pipe weld joints according to claim 6, characterized in that: The output end of the cylinder (16) is rotatably connected to the push plate (15). An L-shaped plate (12) is provided below the cylinder (16). The cylinder (16) is rotatably connected to the upper end of the L-shaped plate (12). A protective sleeve is provided on the outside of the cylinder (16). The output end of the cylinder (16) and the protective sleeve are connected through each other.

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