Automatic detection device for pressure vessels

Abstract

The utility model provides a kind of pressure vessel automatic detection device, it is related to pressure vessel detection technical field, including pressure vessel body, and be used for the climbing shell of pressure vessel body detection, the pressure vessel body tank mouth is equipped with two equal-height settings' battens, the batten bottom surface rotationally connected has a pair of symmetric distribution's swing arm, by setting batten and electric reel, by batten is fixed in the pressure vessel body tank mouth realizes electric reel position fixed, using electric reel plus flexible lifting mode of traction line, replaced the rigid telescopic structure of ejector rod, as long as the length of traction line is enough, it can pull climbing shell from tank bottom and climb to tank top, not by the rigid constraint of the length of detection cylinder and the maximum extension of ejector rod, eliminate the detection blind area of tank body upper and lower end.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel testing technology, and in particular to an automatic pressure vessel testing device. Background Technology

[0002] The design purpose of pressure vessels dictates that they are frequently exposed to high-pressure, flammable, explosive, toxic, or corrosive media. If there are sealing defects, such as weld leakage, flange sealing surface deformation, or valve seal failure, high-pressure media will leak, which may cause equipment shutdown or even explosion.

[0003] Therefore, in the existing boiler pressure vessel internal surface crack detection device, publication number CN220525732U, the operator installs the device inside the boiler pressure vessel. A motor drives a gear to rotate, and the gear meshes with a rack, allowing the push rod to move along the guide groove on the detection cylinder under the traction force of the rotating gear. This adjusts the position of the magnetic particle flaw detector body and the magnetic base, improving the detection effect and accuracy of the magnetic suspension sprayed from the nozzle. Subsequently, when collecting the magnetic suspension, an external water pump is activated. The magnetic suspension dripping inside the boiler pressure vessel is gathered by a collection hood and then extracted by the first extraction pipe into the second extraction pipe for collection.

[0004] However, the lifting of existing testing devices relies on a combination of a testing cylinder and a top rod. The stroke is determined by the length of the testing cylinder and the extendable length of the top rod. If the height of the container far exceeds the maximum extension length of the testing cylinder and the top rod, the top rod cannot extend to the top of the container, or the testing cylinder cannot be stably lowered to the bottom of the container. This results in the inner surfaces of the upper and lower ends of the container becoming blind spots for testing, making it impossible to complete the full range of sealing and crack detection, and posing a risk of missed detection. Utility Model Content

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing an automatic pressure vessel detection device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic pressure vessel detection device, comprising a pressure vessel body and a climbing shell for detecting the pressure vessel body. Two equal-height ramps are installed at the opening of the pressure vessel body. A pair of symmetrically distributed swing arms are rotatably connected to the bottom surface of the ramps. Each swing arm has a motor mounted on its swing end, with the motor shaft facing downwards and a clamping wheel installed. A spur gear is fixedly installed at the rotatable connection between the swing arm and the ramp, extending upwards through the ramp. Two spur gears on the same ramp surface mesh with each other, and a coaxially distributed worm gear is fixedly installed at the top of one of the spur gears. The clamping wheels on the two ramps are respectively used to abut against the inner and outer walls of the pressure vessel body, and the central axis of the rollers is parallel to the central axis of the pressure vessel body. An electric winding reel is rotatably connected to the upper surface of the ramp near the inner side of the pressure vessel body. Two traction lines are wound inside the electric winding reel and connected to the outer top edge of the climbing shell. The climbing shell is located outside the pressure vessel body and climbs along the generatrix of the outer wall of the pressure vessel body.

[0007] Preferably, the upper surface of the mounting plate is rotatably connected to a worm gear meshing with a worm wheel, and one mounting plate is inserted into the side of the other mounting plate.

[0008] Preferably, the side of the ramp plate near the inner side of the pressure vessel body extends horizontally and penetrates through the side of another ramp plate, and the side of the ramp plate near the inner side of the pressure vessel body is rotatably connected to a screw that is distributed parallel to the extension and threaded through the side of the other ramp plate.

[0009] Preferably, the opening of the climbing shell faces the outer wall of the pressure vessel body, and a sealing gasket that is slidably connected to the outer wall of the pressure vessel body is installed on the inner side of the climbing shell opening by bolts.

[0010] Preferably, the bottom of the climbing shell is threadedly connected to a liquid storage tank, and a pump body is fixedly installed on the bottom edge of the outer side of the climbing shell. The water inlet end of the pump body is fixedly connected to the bottom of the liquid storage tank pipe, and the water outlet end of the pump body is connected to two nozzles arranged on the inner side of the climbing shell.

[0011] Preferably, steel track wheels are inserted into the outer walls of both the left and right side plates of the climbing shell. The track strips of the steel track wheels are magnetically attracted to the outer wall of the pressure vessel body, and the wheel frames of the two steel track wheels are fixedly installed with the same connecting frame. An electric push rod is provided between the connecting frame and the outer side of the climbing shell.

[0012] Preferably, a rotating disk is rotatably connected to the inner wall of the side of the climbing shell facing the outer wall of the pressure vessel body, and a camera is fixedly installed on the side of the rotating disk.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, by setting up a ramp and an electric reel, the position of the electric reel is fixed by fixing the ramp to the opening of the pressure vessel body. The flexible lifting method of electric reel plus traction line replaces the rigid telescopic structure of the top rod. As long as the traction line is long enough, the climbing shell can be pulled up from the bottom of the tank to the top of the tank. It is not subject to the rigid constraints of the length of the detection cylinder and the maximum extension of the top rod, thus eliminating the detection blind zone at the top and bottom of the tank.

[0014] 2. In this utility model, by setting steel track wheels, the steel track wheels, through the dual action of magnetic adsorption and electric push rod, tightly fit against the outer wall of the tank, providing stable support for the climbing shell, ensuring that the sealing gasket always maintains uniform pressure against the tank wall during the climbing process, avoiding sealing gaps caused by the shaking of the climbing shell, reducing the possibility of magnetic suspension fluid leakage from gaps from the source, and providing a basic guarantee for recycling efficiency. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural schematic diagram of an automatic detection device for pressure vessels; Figure 2 This utility model provides a structural schematic diagram of the mounting plate for an automatic pressure vessel detection device; Figure 3 This utility model provides a structural schematic diagram of the climbing shell of an automatic detection device for pressure vessels; Figure 4 for Figure 3 A cross-sectional structural diagram.

[0016] Legend: 1. Pressure vessel body; 2. Platform plate; 3. Climbing shell; 4. Electric reel; 5. Pressure roller; 6. Swing arm; 7. Motor; 8. Spur gear; 9. Worm gear; 10. Screw; 11. Worm gear; 12. Sealing gasket; 13. Connecting frame; 14. Steel track wheel; 15. Nozzle; 16. Electric push rod; 17. Liquid storage tank; 18. Pump body; 19. Rotary disc; 20. Camera. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] like Figures 1-4As shown, an automatic pressure vessel inspection device includes a pressure vessel body 1 and a climbing shell 3 for inspecting the pressure vessel body 1. Two equal-height ramps 2 are installed at the opening of the pressure vessel body 1. A pair of symmetrically distributed swing arms 6 are rotatably connected to the bottom surface of the ramps 2. Each swing arm 6 has a motor 7 mounted on its swing end, with the motor 7's main shaft facing downwards and equipped with a clamping roller 5. The clamping rollers 5 on the two ramps 2 are respectively used to abut against the inner and outer walls of the pressure vessel body 1, and the roller's central axis is parallel to the central axis of the pressure vessel body 1. In actual use, the angles of the two clamping rollers 5 on the same ramp 2 are adjusted according to the curvature of the inner and outer walls of the pressure vessel body 1 being inspected. When the two ramps 2 are combined and the clamping rollers 5 on the two ramps 2 abut against the inner and outer walls of the pressure vessel body 1, the motor 7 on the swing arm 6 drives the clamping rollers 5 to roll against the surface of the pressure vessel body 1. The movement allows the two mounting plates 2 to revolve around the central axis of the pressure vessel body 1, thereby adjusting the position of the climbing shell 3 suspended by the mounting plates 2. Regarding how to adjust the relative position of the two clamping wheels 5 on the same mounting plate 2, the swing arm 6 extends upward through the mounting plate 2 at the rotatable connection point and is fixedly installed with a spur gear 8. The two spur gears 8 on the upper surface of the same mounting plate 2 are meshed and connected, and a worm gear 9 is fixedly installed on the top of one of the spur gears 8. A worm 11 is rotatably connected to the upper surface of the mounting plate 2 and meshes with the worm gear 9. By rotating the worm 11, the meshing worm gear 9 is rotated, which drives the corresponding spur gear 8 to rotate, thereby realizing the opposite rotation of the other meshing spur gear 8 on the same mounting plate 2. This allows the two swing arms 6 on the same mounting plate 2 to swing at the same speed, relative to each other, or in opposite directions to adjust the included angle, thereby realizing the distance adjustment of the two clamping wheels 5 on the same mounting plate 2. Furthermore, one of the access plates 2 is inserted into the side of the other access plate 2. The side of the access plate 2 near the inside of the pressure vessel body 1 extends horizontally and passes through the side of the other access plate 2. The side of the access plate 2 near the inside of the pressure vessel body 1 is rotatably connected to a screw 10 that is parallel to the extension and threaded through the side of the other access plate 2. In order to accommodate the use of pressure vessel bodies 1 with different wall thicknesses, by rotating the screw 10, the outer access plate 2 can be moved while being inserted with the inner access plate 2, and the two access plates 2 can be moved relative to each other until the clamping wheels 5 on the two access plates 2 respectively press against the inner and outer walls of the pressure vessel body 1. An electric reel 4 is rotatably connected to the upper surface of the ramp 2 near the inner side of the pressure vessel body 1. Two traction lines are wound inside the electric reel 4 and connected to the outer top edge of the climbing shell 3. The climbing shell 3 is located outside the pressure vessel body 1 and climbs along the generatrix of the outer wall of the pressure vessel body 1. The climbing shell 3 is used for visual inspection of the surface of the pressure vessel body 1 by magnetic suspension. During inspection, the electric reel on the ramp 2 is used to rotate and wind up the traction lines, which can pull the climbing shell 3 up along the outer wall of the pressure vessel body 1. After the ramp 2 is adjusted at the position of the tank opening of the pressure vessel body 1, the corresponding climbing area of ​​the climbing shell 3 will be adjusted.

[0020] The opening of the climbing shell 3 faces the outer wall of the pressure vessel body 1, and a sealing gasket 12 that is slidably connected to the outer wall of the pressure vessel body 1 is installed on the inner side of the opening of the climbing shell 3 by bolts. The sealing gasket 12 of the corresponding shape is selected according to the curvature and shape of the outer wall of the pressure vessel body 1, and the sealing gasket 12 is installed and fixed by bolts. Therefore, during the climbing process, the sealing gasket 12 is attached to the outer wall surface of the pressure vessel body 1 to ensure sealing. The bottom of the climbing shell 3 is threadedly connected to a storage tank 17, and a pump body 18 is fixedly installed on the outer bottom edge of the climbing shell 3. The water inlet of the pump body 18 is fixedly connected to the bottom of the storage tank 17, and the water outlet of the pump body 18 is connected to two nozzles 15 arranged on the inner side of the climbing shell 3. During the climbing process of the climbing shell 3, the pump body 18 sprays the magnetic suspension liquid stored in the storage tank 17 from the nozzles 15 and evenly covers the outer wall surface of the pressure vessel body 1 covered by the climbing shell. During the ascent of the climbing shell 3, the sealing gasket 12 can scrape off the magnetic suspension liquid remaining on the surface of the pressure vessel body 1, and the scraped magnetic suspension liquid gathers at the bottom of the climbing shell 3 and flows back into the storage tank 17.

[0021] Steel tracked wheels 14 are inserted into the outer walls of both sides of the climbing shell 3. The track strips of the steel tracked wheels 14 are magnetically attracted to the outer wall of the pressure vessel body 1, and the wheel frames of the two steel tracked wheels 14 are fixedly installed with the same connecting frame 13. An electric push rod 16 is provided between the connecting frame 13 and the outer side of the climbing shell 3. By retracting the electric push rod 16, the connecting frame 13 is moved, thereby enabling the two connected steel tracked wheels 14 to abut against the outer wall of the pressure vessel body 1. In this design, it is also possible to cover and install magnetic blocks on the surface of the track strips of the steel tracked wheels 14, using the magnetic force of the magnetic blocks to make the steel tracked wheels 14 tightly attracted to the pressure vessel body 1. A rotating disk 19 is rotatably connected to the inner wall of the outer wall of the container body 1 on the side of the climbing shell 3 facing the outer wall of the pressure vessel body 1. A camera 20 is fixedly installed on the side of the rotating disk 19. In this solution, the rotating disk 19 is driven to rotate by installing a motor 7 on the climbing shell 3. When spraying the magnetic suspension liquid, the camera 20 on the rotating disk 19 faces away from the outer wall of the pressure vessel body 1 to avoid the magnetic suspension liquid covering the surface of the camera 20. After the magnetic suspension liquid is sprayed, the rotating disk 19 rotates so that the camera 20 faces the outer wall of the pressure vessel body 1, which is convenient for observing the surface of the pressure vessel body 1 covered with magnetic suspension liquid.

[0022] The method of using this utility model is as follows: Based on the curvature of the inner and outer walls of the pressure vessel to be tested, rotate the worm gear 11 on the mounting plate 2, which drives the meshing spur gear 8 to rotate synchronously in opposite directions through the worm wheel 9, causing the swing arm 6 to swing relative to or towards each other until the distance between the two clamping wheels 5 on the same mounting plate 2 matches the curvature of the tank surface. Rotate the screw 10 on the inner mounting plate 2 to move the outer mounting plate 2 horizontally along the plug-in structure until the clamping wheels 5 on the inner and outer mounting plates 2 respectively tightly abut against the inner and outer walls of the tank, thus completing the fixation of the device at the tank opening.

[0023] The electric push rod 16 retracts and pulls the connecting frame 13, causing the steel track wheels 14 on both sides of the climbing shell 3 to fit against the outer wall of the tank. At the same time, the matching sealing gasket 12 is replaced according to the shape of the tank wall, and the sealing fit is ensured by fixing with bolts. The electric reel 4 is started to wind up the traction line, pulling the climbing shell 3 slowly upward along the direction of the tank body. During the upward process, the sealing gasket 12 continuously scrapes off the magnetic suspension liquid remaining on the tank wall. The scraped liquid collects at the bottom of the climbing shell 3 and flows back to the storage tank 17.

[0024] Before spraying the magnetic suspension liquid, the camera 20 on the rotating disk 19 faces away from the tank wall; the pump body 18 is started, and the magnetic suspension liquid in the storage tank 17 is evenly sprayed through the nozzle 15 onto the tank wall area covered by the climbing shell 3. The magnetic suspension liquid will form magnetic traces at the defects. After the magnetic suspension liquid is sprayed, the rotating disk 19 is driven to rotate so that the camera 20 faces the tank wall. The distribution of magnetic traces can be observed in real time through the camera 20 to accurately identify surface and near-surface defects such as cracks.

[0025] The wiring diagrams for the electric reel 4, motor 7, steel track wheel 14, electric push rod 16, pump body 18, and camera 20 in this utility model are common knowledge in the field. Their working principles are known technologies, and the appropriate models are selected according to actual use. Therefore, the control methods and wiring arrangements for the electric reel 4, motor 7, steel track wheel 14, electric push rod 16, pump body 18, and camera 20 will not be explained in detail.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An automatic pressure vessel inspection device, comprising a pressure vessel body (1) and a climbing shell (3) for inspecting the pressure vessel body (1), characterized in that: Two equal-height ramps (2) are installed at the opening of the pressure vessel body (1). A pair of symmetrically distributed swing arms (6) are rotatably connected to the bottom surface of the ramps (2). A motor (7) is installed at the swing end of each swing arm (6), and the main shaft of the motor (7) of the swing arm (6) faces downward and is equipped with a pressure wheel (5). The rotatable connection between the swing arm (6) and the ramp (2) extends upward through the ramp (2) and is fixedly installed with a spur gear (8). Two spur gears (8) on the upper surface of the same ramp (2) are meshed and connected, and the top of one of the spur gears (8) is fixed. The worm gears (9) are installed on the two mounting plates (2). The clamping rollers (5) on the two mounting plates (2) are respectively used to abut against the inner and outer walls of the pressure vessel body (1) and the central axis of the rollers is set parallel to the central axis of the pressure vessel body (1). An electric winding reel (4) is rotatably connected to the upper surface of the mounting plate (2) near the inner side of the pressure vessel body (1). Two traction lines are wound inside the electric winding reel (4) and the two traction lines are connected to the outer top edge of the climbing shell (3). The climbing shell (3) is located outside the pressure vessel body (1) and climbs along the generatrix direction of the outer wall of the pressure vessel body (1).

2. The automatic pressure vessel detection device according to claim 1, characterized in that: The upper surface of the mounting plate (2) is rotatably connected to a worm (11) that meshes with a worm wheel (9), and one mounting plate (2) is inserted into the side of the other mounting plate (2).

3. The automatic pressure vessel detection device according to claim 2, characterized in that: The side of the plate (2) near the inside of the pressure vessel body (1) extends horizontally and passes through the side of another plate (2). The side of the plate (2) near the inside of the pressure vessel body (1) is rotatably connected to a screw (10) that is parallel to the extension and threaded through the side of another plate (2).

4. The automatic pressure vessel detection device according to claim 1, characterized in that: The opening of the climbing shell (3) faces the outer wall of the pressure vessel body (1), and a sealing gasket (12) that is slidably connected to the outer wall of the pressure vessel body (1) is installed on the inner side of the opening of the climbing shell (3) by bolts.

5. The automatic pressure vessel detection device according to claim 4, characterized in that: The bottom of the climbing shell (3) is threadedly connected to a liquid storage tank (17), and a pump body (18) is fixedly installed on the bottom edge of the outer side of the climbing shell (3). The water inlet end of the pump body (18) is fixedly connected to the bottom of the liquid storage tank (17), and the water outlet end of the pump body (18) is connected to two nozzles (15) arranged on the inner side of the climbing shell (3).

6. The automatic pressure vessel detection device according to claim 5, characterized in that: Steel track wheels (14) are inserted into the outer walls of the left and right side plates of the climbing shell (3). The track strips of the steel track wheels (14) are magnetically attracted to the outer wall of the pressure vessel body (1), and the wheel frames of the two steel track wheels (14) are fixedly installed with the same connecting frame (13). An electric push rod (16) is provided between the connecting frame (13) and the outer side of the climbing shell (3).

7. The automatic pressure vessel detection device according to claim 6, characterized in that: The climbing shell (3) has a rotating disk (19) embedded in the inner wall of the side facing the outer wall of the pressure vessel body (1), and a camera (20) is fixedly installed on the side of the rotating disk (19).

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