A device for detecting the thickness of a sprayed coating on a steel pipe weld

Abstract

The application relates to the technical field of detection devices and provides a device for detecting the thickness of a sprayed coating on a steel pipe welding seam, which comprises a walking mechanism and a thickness detection mechanism; the walking mechanism is connected with the thickness detection mechanism; the thickness detection mechanism comprises a connecting seat, a mounting frame and a thickness detector, the mounting frame is rotationally connected to the connecting seat, the connecting seat is provided with a rotary driving element for driving the connecting seat to rotate; the thickness detector comprises a thickness detection main machine and a thickness detection probe, the thickness detection main machine is mounted on the mounting frame, the mounting frame is provided with a translation driving element, the translation driving element is used for driving the thickness detection probe to slide in a direction perpendicular to the walking direction of the walking mechanism, a first camera is arranged on the mounting frame and faces the display screen of the thickness detection main machine. The application has the effect of facilitating the thickness detection of the rust-proof coating layer at the welding seam.

Description

Technical Field

[0001] This application relates to the technical field of testing devices, and in particular to a device for testing the thickness of sprayed coatings on welded seams of steel pipes. Background Technology

[0002] The weld seams of adjacent pipe sections in water supply pipelines are prone to corrosion in humid environments, leading to leaks and pipe leakage. Currently, to address the issue of easy corrosion at the weld seams of water supply pipelines, pipeline robots are typically used to spray anti-rust coatings around the weld seams to form a protective layer.

[0003] Regarding the aforementioned technologies, due to factors such as the internal environment of the pipeline and operational errors, pipeline robots are prone to uneven coating thickness during actual spraying operations, affecting the overall durability of the anti-rust coating. Furthermore, the limited space inside the pipeline makes it relatively difficult to detect the thickness of the anti-rust coating layer. Therefore, there is room for improvement. Utility Model Content

[0004] To facilitate the thickness detection of the waterproof coating layer at the weld joint of water supply pipelines, this application provides a device for detecting the thickness of the sprayed coating at the weld joint of steel pipes.

[0005] This application provides a device for detecting the thickness of sprayed coatings on welded seams of steel pipes, which adopts the following technical solution: A device for detecting the thickness of sprayed coatings on welded seams of steel pipes, comprising a traveling mechanism and a thickness measuring mechanism; The walking mechanism is connected to the thickness measuring mechanism and is used to drive the thickness measuring mechanism to move inside the pipe; The thickness measuring mechanism includes a connecting base, a mounting frame, and a thickness gauge. The mounting frame is rotatably connected to the connecting base, and the connecting base is provided with a rotary drive for driving the connecting base to rotate. The thickness gauge includes a thickness measuring host and a thickness measuring probe. The thickness measuring host is mounted on the mounting frame, and the mounting frame is provided with a translation drive corresponding to the thickness measuring probe. The translation drive is used to drive the thickness measuring probe to slide in a direction perpendicular to the traveling direction of the traveling mechanism. A first camera is supported on the mounting frame, and the first camera faces the display screen of the thickness measuring host. The first camera is connected to an external controller and is used to acquire the data image displayed on the display screen of the thickness measuring host and feed it back to the external controller.

[0006] By adopting the above technical solution, the traveling mechanism drives the thickness measuring mechanism along the pipeline to the anti-rust coating layer of the pipeline weld. Then, the rotary drive drives the mounting frame to move the thickness measuring probe of the thickness gauge to the area to be inspected. The translation drive drives the thickness measuring probe to contact the anti-rust coating layer. The thickness measuring probe is used to obtain thickness data and feed it back to the display screen of the thickness measuring host. At the same time, the first camera obtains the data image on the display screen of the thickness measuring host and feeds it back to the external controller of the pipeline. This allows the operator to obtain the thickness data of the anti-rust coating layer of the weld, effectively reducing the difficulty of inspecting the thickness of the anti-rust coating layer of the weld inside the pipeline.

[0007] Preferably, the mounting bracket is provided with an adjustment bracket corresponding to the first camera. The adjustment bracket includes a first frame and a second frame. The first frame is fixed to the mounting bracket, and the second frame is damped and hinged to the top of the first frame. The hinge axis of the second frame is horizontally arranged, and the top of the second frame is connected to the first camera.

[0008] By adopting the above technical solution, the angle and position of the first camera can be flexibly adjusted using the adjustable bracket, so that the first camera can better acquire the data image displayed on the thickness measurement host screen.

[0009] Preferably, an LED light panel is provided around the outer periphery of the first camera.

[0010] By adopting the above technical solution and using LED light panels to provide auxiliary lighting inside the pipe, the first camera can better acquire images from the thickness measurement host display screen.

[0011] Preferably, the walking mechanism includes a walking frame, and electric trolleys are provided at the top and bottom of the walking frame; the connecting seat of the thickness measuring mechanism is connected to the middle of the front end of the walking frame.

[0012] By adopting the above technical solution, the traveling mechanism moves inside the pipeline via electric trolleys at its top and bottom, making it easy to move the thickness measuring mechanism to the anti-rust coating layer of weld seams at various points inside the pipeline.

[0013] Preferably, the electric trolley includes four rollers, which are located in pairs on both sides of the electric trolley, and the ends of the rollers away from the electric trolley are chamfered.

[0014] By adopting the above technical solution, and by setting the end of the roller away from the electric trolley with a chamfer, it is beneficial to increase the contact area between the roller and the inner wall of the pipe, making it easier for the electric trolley to move more stably inside the pipe.

[0015] Preferably, a second camera is installed at the front end of the walking mechanism. Both the second camera and the electric trolley are electrically connected to an external controller. The second camera is used to acquire images of the inside of the pipeline and feed them back to the external controller.

[0016] By adopting the above technical solution, external operators can obtain real-time images of the inside of the pipeline through the second camera on the walking frame, which helps the walking mechanism to more accurately move the thickness measuring mechanism to the anti-rust coating layer of the pipeline weld.

[0017] Preferably, a lifting drive component is provided on the outside of the walking frame, and the lifting drive component is connected to the electric trolley located at the top of the walking frame, for driving the corresponding electric trolley to move vertically up and down.

[0018] By adopting the above technical solution, when the inner diameter of the pipe changes, the position of the electric trolley at the top of the traveling frame can be adjusted by the lifting drive component so that the rollers of the electric trolley at the top and bottom can always be in contact with the inner wall of the pipe, which is beneficial to improving the versatility and applicability of the device.

[0019] Preferably, the thickness measuring host is fixed to the mounting frame by a clamp.

[0020] By adopting the above technical solution, a stable connection between the thickness measuring host and the mounting bracket is achieved, preventing the thickness measuring host from shaking or shifting during the movement of subsequent devices inside the pipeline.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The traveling mechanism drives the thickness measuring mechanism along the pipeline to the anti-rust coating layer of the pipeline weld. The rotary drive causes the mounting frame to move the thickness measuring probe of the thickness gauge to the area of ​​the anti-rust coating layer to be inspected. The translation drive then drives the thickness measuring probe to contact the anti-rust coating layer. The thickness measuring probe acquires thickness data and feeds it back to the thickness measuring host display screen. The first camera then acquires the data image from the display screen and feeds it back to the external controller of the pipeline. This enables the inspection of the anti-rust coating layer of the pipeline weld.

[0022] 2. By installing an LED light panel around the first camera, it is beneficial to provide supplementary lighting for the first camera, making it easier for the first camera to obtain the image on the thickness measurement host display screen more clearly. Attached Figure Description

[0023] Figure 1 This is a schematic diagram illustrating the walking mechanism and the detection mechanism in an embodiment of this application.

[0024] Figure 2 This is a schematic diagram illustrating the testing organization in an embodiment of this application.

[0025] Figure 3This is a schematic diagram illustrating the first camera and the adjustment frame in an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures: 1. Walking mechanism; 11. Walking frame; 111. Flange pipe; 12. Electric trolley; 121. Roller; 2. Thickness measuring mechanism; 21. Connecting seat; 22. Mounting bracket; 23. Gear motor; 231. Main gear; 232. Secondary gear; 24. Thickness gauge; 241. Thickness measuring host; 242. Thickness measuring probe; 25. Translation cylinder; 251. Clamping seat; 26. First camera; 261. First frame; 262. Second frame; 3. Second camera. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0028] This application discloses an apparatus for detecting the thickness of sprayed coatings on welded seams of steel pipes, referring to... Figure 1 and Figure 2 It includes a traveling mechanism 1 and a thickness measuring mechanism 2, wherein the traveling mechanism 1 is connected to the thickness measuring mechanism 2 and is used to drive the thickness measuring mechanism 2 to move inside the pipe. The thickness measuring mechanism 2 is used to detect the thickness of the anti-rust coating layer of the pipe weld.

[0029] Reference Figure 1 and Figure 2 The traveling mechanism 1 includes a traveling frame 11, with electric trolleys 12 mounted on both the top and bottom of the frame 11. Each electric trolley 12 has four rollers 121, arranged in pairs on either side of the trolley. When the traveling mechanism 1 is inside the pipe, the rollers 121 of the electric trolleys 12 are in contact with the inner wall of the pipe. During subsequent inspection of the anti-rust coating layer on the pipe welds, the rollers 121 of the two electric trolleys 12 at the top and bottom of the frame 11 are driven to rotate, thus moving the thickness measuring mechanism 2 along the pipe. The end of each roller 121 away from the electric trolley 12 is chamfered to increase the friction between the roller 121 and the inner wall of the pipe, facilitating more stable movement of the electric trolley 12 within the pipe.

[0030] Reference Figure 1 and Figure 2 The traveling frame 11 has lifting drive components on both sides. The lifting drive components include lifting cylinders, which are vertically upward. The piston rod ends of the lifting drive components are connected to the electric trolley 12 on the top of the traveling support to drive the corresponding electric trolley 12 to rise and fall vertically. The height of the electric trolley 12 on the top of the traveling frame is adjusted according to the inner diameter of the pipe so that the traveling mechanism 1 can adapt to pipes of different specifications.

[0031] Reference Figure 1 and Figure 2The thickness measuring mechanism 2 includes a connecting seat 21, which is connected to the middle of the front end of the traveling support. The connecting seat 21 is provided with a mounting bracket 22, which is rotatably connected to the connecting seat 21 via a rotating shaft. The axis of the rotating shaft is parallel to the traveling direction of the traveling mechanism 1. The connecting seat 21 is provided with a rotary drive component for driving the connecting seat 21 to rotate. Specifically, the rotary drive component includes a geared motor 23 mounted on the connecting seat 21. The output end of the geared motor 23 is coaxially connected to a main gear 231, and a secondary gear 232 is coaxially connected to the rotating shaft. The main gear 231 and the secondary gear 232 are meshed to realize the driving connection between the geared motor 23 and the rotating shaft. The geared motor 23 drives the rotating shaft to drive the mounting bracket 22 to rotate.

[0032] Reference Figure 1 and Figure 2 A thickness gauge 24 is installed on the mounting bracket 22. The thickness gauge 24 is an existing ultrasonic thickness gauge. The thickness gauge 24 includes a thickness measuring host 241 and a thickness measuring probe 242. The thickness measuring host 241 is fixed to the mounting bracket 22 by a clamp, so as to achieve a stable connection between the thickness measuring host 241 and the mounting bracket 22 and limit the displacement and shaking of the thickness measuring host 241 during subsequent travel in the pipeline.

[0033] Reference Figure 1 and Figure 2 The thickness probe 242 is located on one side of the mounting bracket 22 and is wired to the thickness measuring host 241 for feeding back data to the thickness measuring host 241. The length direction of the thickness probe 242 is perpendicular to the travel direction of the walking mechanism 1. When the device is located inside the pipe cavity, the thickness probe 242 is facing the inner wall of the pipe. The mounting bracket 22 is provided with a translation drive corresponding to the thickness probe 242. The translation drive is used to drive the thickness probe 242 to move in a direction perpendicular to the travel direction of the walking mechanism 1. Specifically, the translation drive includes a translation cylinder 25, which is fixed on the mounting bracket 22. The piston rod end of the translation cylinder 25 is connected to the thickness probe 242 through a clamp 251.

[0034] Reference Figure 1 and Figure 2 The mounting bracket 22 supports a first camera 26 corresponding to the thickness measuring host 241. In this embodiment, the first camera 26 is a wide-angle camera. The first camera 26 faces the display screen of the thickness measuring host 241 and is connected to an external controller to acquire the data image displayed on the display screen of the thickness measuring host 241 and feed it back to the external controller.

[0035] Reference Figure 1 and Figure 2When detecting the thickness of the pipe weld, the thickness measuring probe 242 is driven by the translation cylinder 25 to come into contact with the anti-rust coating layer of the weld. The thickness measuring probe 242 then feeds back the thickness data to the display screen of the thickness measuring host 241. The first camera 26 acquires the data image displayed on the display screen of the thickness measuring host 241 and feeds it back to the external controller.

[0036] Reference Figure 2 and Figure 3 The mounting bracket 22 is equipped with an adjustment bracket corresponding to the first camera 26. The adjustment bracket includes a first frame 261 and a second frame 262. The first frame 261 is fixed to the mounting bracket 22, and the second frame 262 is damped and hinged to the top of the first frame 261. The hinge axis of the second frame 262 is set horizontally, and the top of the second frame 262 is connected to the first camera 26. In subsequent use, the shooting angle of the first camera 26 can be adjusted by adjusting the angle of the second frame 262 so that the first camera 26 can better obtain the image of the thickness measuring host 241 display screen.

[0037] Reference Figure 1 and Figure 2 A second camera 3 is installed at the front end of the electric trolley 12 located at the top of the walking frame 11. The second camera 3 is a wide-angle camera. The second camera 3 and each electric trolley 12 are electrically connected to an external controller to acquire images of the inside of the pipeline and feed them back to the external controller. This allows external operators to view the inside of the pipeline in real time through the external controller, and to more accurately drive the thickness measuring mechanism 2 to the anti-rust coating layer of the pipeline weld by the electric trolleys 12 at each point of the walking mechanism 1.

[0038] Both the first camera 26 and the second camera 3 are equipped with LED light panels on their outer periphery. The LED light panels are used to supplement the light inside the pipe so that the first camera 26 and the second camera 3 can acquire images more clearly and feed them back to the external controller.

[0039] Reference Figure 1 and Figure 2 The rear end of the traveling support is connected to a flange pipe 111, which can be used to connect external equipment as needed.

[0040] The implementation principle of this application embodiment is as follows: After the walking mechanism 1 drives the thickness measuring mechanism 2 to move inside the pipeline until the thickness measuring probe 242 of the thickness measuring mechanism 2 is located at the anti-rust coating layer of the pipeline weld, the rotating drive component drives the mounting frame 22 to rotate the thickness measuring probe 242 until the thickness measuring probe 242 faces the area to be detected in the anti-rust coating layer. The translation drive component drives the thickness measuring probe 242 to abut against the surface of the anti-rust coating layer to obtain the anti-rust coating layer data and feed it back to the display screen of the thickness measuring host 241; the first camera 26 on the mounting frame 22 obtains the data image displayed on the display screen of the thickness measuring host 241 and feeds it back to the external controller, thereby realizing the thickness detection of the anti-rust coating layer of the pipeline weld and effectively reducing the overall detection difficulty.

[0041] 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 device for detecting the thickness of sprayed coatings on welded seams of steel pipes, characterized in that: It includes a walking mechanism (1) and a thickness measuring mechanism (2); The walking mechanism (1) is connected to the thickness measuring mechanism (2) and is used to drive the thickness measuring mechanism (2) to move inside the pipe; The thickness measuring mechanism (2) includes a connecting seat (21), a mounting frame (22), and a thickness gauge (24). The mounting frame (22) is rotatably connected to the connecting seat (21). The connecting seat (21) is provided with a rotary drive for driving the connecting seat (21) to rotate. The thickness gauge (24) includes a thickness measuring host (241) and a thickness measuring probe (242). The thickness measuring host (241) is mounted on the mounting frame (22). The mounting frame (22) is provided with a translation drive corresponding to the thickness measuring probe (242). The translation drive is used to drive the thickness measuring probe (242) to slide in a direction perpendicular to the traveling direction of the walking mechanism (1). A first camera (26) is supported on the mounting frame (22). The first camera (26) faces the display screen of the thickness measuring host (241). The first camera (26) is connected to an external controller and is used to acquire the data image displayed on the display screen of the thickness measuring host (241) and feed it back to the external controller.

2. The device for detecting the thickness of sprayed coatings at weld seams of steel pipes according to claim 1, characterized in that: The mounting bracket (22) is provided with an adjustment bracket corresponding to the first camera (26). The adjustment bracket includes a first frame (261) and a second frame (262). The first frame (261) is fixed to the mounting bracket (22). The second frame (262) is damped and hinged to the top of the first frame (261). The hinge axis of the second frame (262) is horizontally set. The top of the second frame (262) is connected to the first camera (26).

3. The device for detecting the thickness of sprayed coating at weld seams of steel pipes according to claim 2, characterized in that: An LED light panel is provided on the outer periphery of the first camera (26).

4. The device for detecting the thickness of sprayed coatings at weld seams of steel pipes according to claim 1, characterized in that: The walking mechanism (1) includes a walking frame (11), and electric trolleys (12) are provided at the top and bottom of the walking frame (11); the connecting seat (21) of the thickness measuring mechanism (2) is connected to the middle of the front end of the walking frame (11).

5. The device for detecting the thickness of sprayed coating at weld seams of steel pipes according to claim 4, characterized in that: The electric trolley (12) includes four rollers (121), which are located in pairs on both sides of the electric trolley (12). The ends of the rollers (121) away from the electric trolley (12) are chamfered.

6. The device for detecting the thickness of sprayed coating at weld seams of steel pipes according to claim 4, characterized in that: The walking mechanism (1) is equipped with a second camera (3) at its front end. The second camera (3) and the electric trolley (12) are both electrically connected to an external controller. The second camera (3) is used to acquire images inside the pipeline and feed them back to the external controller.

7. The device for detecting the thickness of sprayed coating at weld seams of steel pipes according to claim 4, characterized in that: A lifting drive is provided on the outside of the walking frame (11). The lifting drive is connected to the electric trolley (12) located on the top of the walking frame (11) and is used to drive the corresponding electric trolley (12) to rise and fall vertically.

8. The device for detecting the thickness of sprayed coating at weld seams of steel pipes according to claim 2, characterized in that: The thickness measuring host (241) is fixed on the mounting bracket (22) by a clamp.

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