A pipeline inner wall defect detection device

Abstract

This application relates to the field of pipeline inspection technology and discloses a pipeline internal wall defect detection device, including a frame. A base box is fixedly installed on the bottom inner wall of the frame, and a vertical box is fixedly installed on the top of the base box and the left inner wall of the frame. A positioning seat is rotatably installed on the top of the base box, located on the right side of the vertical box. A positioning mechanism is provided inside the positioning seat, and a seat hole is opened on the right side of the vertical box. A motor is fixedly installed on the bottom inner wall of the base box, and the top of the motor output shaft is fixedly connected to the bottom of the positioning seat. This application has the following advantages and effects: by setting up a reciprocating mechanism and a detection mechanism, the motor can drive the industrial camera to move up and down reciprocally. Under the coordinated action of the industrial camera and the camera lens moving up and down and the pipeline rotating, it can perform all-round, no-dead-angle image acquisition of the pipeline internal wall, thereby achieving the purpose of efficient and accurate detection of pipeline internal wall defects.

Description

Technical Field

[0001] This application relates to the field of pipeline inspection technology, and in particular to a pipeline inner wall defect detection device. Background Technology

[0002] A pipeline is a device used to transport media. Its cross-section is usually circular. During pipeline production, it is usually prepared by using a mold. After the mold is produced, a pipeline sample needs to be prepared. Then, the exterior and interior walls of the pipeline sample are inspected. The qualification of the mold is determined by the qualification of the pipeline. The exterior of the pipeline can be observed by a camera or the naked eye, while the interior wall of the pipeline needs to be inspected by a testing device.

[0003] In practical use, it has been found that although existing equipment can move along the pipeline axis for detection, it lacks a circumferential scanning mechanism, or the movement trajectory of the detection component inside the pipeline is singular, resulting in blind spots in the shooting angle and inability to fully capture the image information of the inner wall. This makes it difficult for the detection results to fully reflect the true condition of the pipeline inner wall, seriously affecting the detection effect. Therefore, we propose a pipeline inner wall defect detection device to solve the above problems. Utility Model Content

[0004] The purpose of this application is to address the shortcomings of existing technologies, such as blind spots in the shooting angle, inability to fully capture image information of the inner wall, and difficulty in reflecting the true condition of the pipe inner wall in the detection results, which seriously affects the detection effect. Therefore, a pipe inner wall defect detection device is proposed.

[0005] The above-mentioned technical objective of this application is achieved through the following technical solution: a pipe inner wall defect detection device, comprising a frame, a bottom box fixedly installed on the bottom inner wall of the frame, a vertical box fixedly installed on the top of the bottom box and the left inner wall of the frame, a positioning seat rotatably installed on the top of the bottom box, the positioning seat being located on the right side of the vertical box, a positioning mechanism being provided inside the positioning seat, and a seat hole being opened on the right side of the vertical box; a motor fixedly installed on the bottom inner wall of the bottom box, the top end of the motor output shaft being fixedly connected to the bottom of the positioning seat, a reciprocating mechanism being provided between the vertical box and the bottom box, and a detection mechanism being provided inside the frame.

[0006] A further feature of this application is that the positioning mechanism includes two hydraulic cylinders and two arc-shaped clamps. Hydraulic cylinders are fixedly installed on both sides of the positioning seat. Two arc-shaped clamps are slidably installed on the inner wall of the bottom of the positioning seat. The output shaft of the hydraulic cylinder is fixedly connected to the outer side of the corresponding arc-shaped clamp. A rubber pad is provided on the inner side of the arc-shaped clamp. A pipe is placed inside the positioning seat, and the arc-shaped clamp is adapted to the pipe.

[0007] By adopting the above technical solution and setting a positioning mechanism, the output shaft of the hydraulic cylinder can push the corresponding arc-shaped clamp to slide on the inner wall of the bottom of the positioning seat, thereby firmly clamping the pipeline and preventing the pipeline from shifting or shaking during subsequent testing, thus ensuring the accuracy and stability of the test.

[0008] A further configuration of this application is as follows: the reciprocating mechanism includes a reciprocating lead screw and a lead screw seat. The same reciprocating lead screw is rotatably installed on the inner wall of the bottom of the bottom box and the inner wall of the top of the vertical box. A lead screw seat is sleeved on the reciprocating lead screw. The right side of the lead screw seat extends to the outside of the vertical box. The lead screw seat is slidably connected to the seat hole. An adjustment mechanism is provided on the lead screw seat. A transmission mechanism is provided between the reciprocating lead screw and the motor output shaft.

[0009] By adopting the above technical solution and by setting up a reciprocating mechanism, the reciprocating screw can drive the screw seat to move up and down reciprocally, thereby achieving the purpose of driving the industrial camera to move up and down reciprocally through the screw.

[0010] A further configuration of this application is as follows: the transmission mechanism includes two transmission wheels and a transmission belt. Transmission wheels are fixedly sleeved on both the reciprocating lead screw and the motor output shaft. The transmission wheels are located inside the bottom box, and the same transmission belt is sleeved on both transmission wheels.

[0011] By adopting the above technical solution and by setting up a transmission mechanism, the motor can drive the reciprocating lead screw to rotate synchronously.

[0012] A further configuration of this application is: the adjusting mechanism includes a screw and a nut, the nut is rotatably mounted on the top of the screw seat, the screw is threaded onto the nut, and the bottom end of the screw extends to the bottom of the screw seat.

[0013] By adopting the above technical solution and setting an adjustment mechanism, rotating the nut allows the screw to move precisely in the vertical direction through the threaded engagement between the nut and the screw rod, thereby driving the industrial camera and camera to adjust their height.

[0014] A further feature of this application is that the detection mechanism includes an industrial camera and two cameras. An industrial camera is fixedly installed at the bottom of the screw, and cameras are provided on both sides of the industrial camera. The cameras are staggered. The industrial camera is adapted to the pipeline, and a limit mechanism is provided between the industrial camera and the lead screw seat.

[0015] By adopting the above technical solution and setting up a detection mechanism, it is possible to collect images of the inner wall of the pipe through a camera, and to transmit the collected image information to the controller on the front side of the top of the bottom box in real time.

[0016] A further feature of this application is that a controller is provided on the front side of the top of the base box, the controller is located on the front side of the positioning seat, and the controller is electrically connected to the motor and the camera.

[0017] By adopting the above technical solution and setting up a controller, the controller can accurately identify defects such as cracks, corrosion, and pits on the inner wall of the pipeline, and record detailed information such as the location and size of the defects, providing a reliable basis for subsequent pipeline maintenance and repair, thereby achieving the goal of efficient and accurate detection of defects on the inner wall of the pipeline.

[0018] A further configuration of this application is as follows: the limiting mechanism includes a limiting rod and a limiting plate, the limiting rod is fixedly installed at the bottom of the screw seat, the limiting rod is located on the left side of the screw, the limiting plate is fixedly installed on the left side of the industrial camera, and the limiting rod and the limiting plate are slidably connected.

[0019] By adopting the above technical solution and setting a limiting mechanism, the limiting rod plays a guiding and limiting role on the limiting plate, preventing the industrial camera from shifting or tilting during the adjustment process and ensuring that it is always in the optimal detection position.

[0020] The beneficial effects of this application are:

[0021] (1) By combining the hydraulic cylinder, the arc-shaped clamp and the rubber pad, the output shaft of the hydraulic cylinder can drive the arc-shaped clamp to approach the pipeline. The rubber pad on its inner side first contacts the surface of the pipeline. By utilizing the elastic deformation of the rubber pad, it tightly fits the irregular outer surface of the pipeline, generating sufficient friction to firmly clamp the pipeline. This can prevent the pipeline from shifting or shaking during subsequent testing, thus ensuring the accuracy and stability of the testing.

[0022] (2) Through the cooperation of the motor and the positioning seat, the motor can drive the positioning seat to rotate, which can drive the pipeline to rotate synchronously. Through the cooperation of the transmission wheel, transmission belt, reciprocating screw, screw seat, screw and industrial camera, the motor can drive the industrial camera to move up and down. Under the synergistic effect of the up and down movement and the rotation of the pipeline, the industrial camera and the camera can collect images of the inner wall of the pipeline in all directions without blind spots, thereby achieving the purpose of efficient and accurate detection of defects in the inner wall of the pipeline.

[0023] (3) By cooperating with the nut and the screw, by rotating the nut, the screw can be moved precisely in the vertical direction by utilizing the threaded connection between the nut and the screw, thereby driving the industrial camera and the camera to adjust the height, so as to achieve the purpose of being applicable to pipes of different lengths. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural schematic diagram of a pipe inner wall defect detection device according to this application;

[0026] Figure 2 This is a schematic diagram of the internal structure of a pipe inner wall defect detection device according to this application;

[0027] Figure 3 This is a schematic diagram of the internal structure of the bottom box of a pipeline inner wall defect detection device according to this application;

[0028] Figure 4 This is a schematic diagram of the internal structure of the vertical box of a pipeline inner wall defect detection device according to this application.

[0029] In the diagram: 1. Frame; 2. Base box; 201. Motor; 202. Transmission wheel; 203. Transmission belt; 3. Vertical box; 301. Reciprocating lead screw; 302. Lead screw seat; 4. Positioning seat; 401. Hydraulic cylinder; 402. Arc-shaped clamp; 403. Pipe; 5. Screw; 501. Nut; 6. Industrial camera; 601. Camera; 7. Controller; 8. Seat hole; 9. Limit rod; 901. Limit plate. Detailed Implementation

[0030] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] See Figures 1-4 This application provides a pipe inner wall defect detection device, including a frame 1, a bottom box 2 fixedly installed on the bottom inner wall of the frame 1, a vertical box 3 fixedly installed on the top of the bottom box 2 and the left inner wall of the frame 1, a positioning seat 4 rotatably installed on the top of the bottom box 2, the positioning seat 4 being located on the right side of the vertical box 3, a positioning mechanism being provided inside the positioning seat 4, and a seat hole 8 being opened on the right side of the vertical box 3; a motor 201 fixedly installed on the bottom inner wall of the bottom of the bottom box 2, the top end of the output shaft of the motor 201 being fixedly connected to the bottom of the positioning seat 4, a reciprocating mechanism being provided between the vertical box 3 and the bottom box 2, and a detection mechanism being provided inside the frame 1.

[0032] Specifically, the positioning mechanism includes two hydraulic cylinders 401 and two arc-shaped clamps 402. Hydraulic cylinders 401 are fixedly installed on both sides of the positioning seat 4. Two arc-shaped clamps 402 are slidably installed on the inner wall of the bottom of the positioning seat 4. The output shaft of the hydraulic cylinders 401 is fixedly connected to the outer side of the corresponding arc-shaped clamps 402. Rubber pads are provided on the inner side of the arc-shaped clamps 402. A pipe 403 is placed inside the positioning seat 4. The arc-shaped clamps 402 and the pipe 403 are compatible.

[0033] Specifically, the reciprocating mechanism includes a reciprocating lead screw 301 and a lead screw seat 302. The same reciprocating lead screw 301 is rotatably mounted on the bottom inner wall of the bottom box 2 and the top inner wall of the vertical box 3. The lead screw seat 302 is sleeved on the reciprocating lead screw 301. The right side of the lead screw seat 302 extends to the outside of the vertical box 3. The lead screw seat 302 is slidably connected to the seat hole 8. An adjustment mechanism is provided on the lead screw seat 302. A transmission mechanism is provided between the reciprocating lead screw 301 and the output shaft of the motor 201.

[0034] Specifically, the transmission mechanism includes two transmission wheels 202 and a transmission belt 203. The transmission wheels 202 are fixedly sleeved on both the reciprocating screw 301 and the output shaft of the motor 201. The transmission wheels 202 are located inside the bottom box 2, and the same transmission belt 203 is sleeved on the two transmission wheels 202.

[0035] Specifically, the adjustment mechanism includes a screw 5 and a nut 501. The nut 501 is rotatably mounted on the top of the lead screw seat 302, and the screw 5 is threaded onto the inner thread of the nut 501. The bottom end of the screw 5 extends to the bottom of the lead screw seat 302.

[0036] Specifically, the detection mechanism includes an industrial camera 6 and two cameras 601. The industrial camera 6 is fixedly installed at the bottom of the screw 5. Cameras 601 are set on both sides of the industrial camera 6. The cameras 601 are staggered. The industrial camera 6 is adapted to the pipe 403. A limit mechanism is set between the industrial camera 6 and the lead screw seat 302.

[0037] Specifically, a controller 7 is installed on the front top of the base box 2. The controller 7 is located on the front of the positioning seat 4 and is electrically connected to the motor 201 and the camera 601.

[0038] Specifically, the limiting mechanism includes a limiting rod 9 and a limiting plate 901. The limiting rod 9 is fixedly installed at the bottom of the screw seat 302. The limiting rod 9 is located on the left side of the screw 5. The limiting plate 901 is fixedly installed on the left side of the industrial camera 6. The limiting rod 9 and the limiting plate 901 are slidably connected.

[0039] In this application, during operation, the pipe 403 to be inspected is first placed in the positioning seat 4, and two hydraulic cylinders 401 are activated. The output shaft of the hydraulic cylinder 401 generates thrust, which pushes the corresponding arc-shaped clamp 402 to slide on the inner wall of the bottom of the positioning seat 4. As the arc-shaped clamp 402 gradually approaches the pipe 403, the rubber pad on its inner side first contacts the surface of the pipe. Utilizing the elastic deformation of the rubber pad, it tightly fits the irregular outer surface of the pipe, generating sufficient friction to firmly clamp the pipe 403. This can prevent the pipe 403 from shifting or shaking during subsequent inspection, ensuring the accuracy and stability of the inspection.

[0040] After the pipe 403 is positioned, the motor 201 on the inner wall of the bottom of the base box 2 is started. The output shaft of the motor 201 transmits power to the positioning seat 4, causing the positioning seat 4 and the pipe 403 to rotate. At the same time, the transmission wheel 202 fixedly sleeved on the output shaft of the motor 201 rotates accordingly, and transmits power to the transmission wheel 202 on the reciprocating screw 301 through the transmission belt 203, causing the reciprocating screw 301 to start rotating. Under the action of the threaded transmission, the screw seat 302 sleeved on the reciprocating screw 301 moves up and down along the seat hole 8 on the right side of the vertical box 3. The screw seat 302 then drives the industrial camera 6 below and the two staggered cameras 60 through the screw 5. 1. The industrial camera 6 and the camera 601 move up and down inside the pipe 403. With the coordinated action of the up-and-down movement and the rotation of the pipe, the industrial camera 6 and the camera 601 can collect images of the inner wall of the pipe 403 from all directions without blind spots. The industrial camera 6 and the camera 601 transmit the collected image information to the controller 7 on the front side of the top of the bottom box 2 in real time. The controller 7 uses the built-in image recognition algorithm to analyze and process the image, quickly and accurately identify defects such as cracks, corrosion, and pits on the inner wall of the pipe, and record detailed information such as the location and size of the defects, so as to provide a reliable basis for subsequent pipe maintenance and repair, thereby achieving the purpose of efficient and accurate detection of defects on the inner wall of the pipe.

[0041] When dealing with pipes 403 of different lengths, especially shorter pipes 403, by rotating the nut 501 at the top of the lead screw seat 302, the screw 5 can be precisely moved vertically by the threaded engagement between the nut 501 and the screw 5, thereby adjusting the height of the industrial camera 6 and the camera lens 601, achieving the purpose of adapting to pipes 403 of different lengths. During this process, the limiting rod 9 at the bottom of the lead screw seat 302 and the limiting plate 901 on the left side of the industrial camera 6 maintain a sliding connection. The limiting rod 9 guides and limits the limiting plate 901, preventing the industrial camera 6 from shifting or tilting during adjustment, ensuring that it is always in the optimal detection position.

Claims

1. A device for detecting defects in the inner wall of a pipeline, characterized in that, Includes a frame (1), a bottom box (2) is fixedly installed on the bottom inner wall of the frame (1), the same vertical box (3) is fixedly installed on the top of the bottom box (2) and the left inner wall of the frame (1), a positioning seat (4) is rotatably installed on the top of the bottom box (2), the positioning seat (4) is located on the right side of the vertical box (3), a positioning mechanism is provided in the positioning seat (4), and a seat hole (8) is opened on the right side of the vertical box (3); A motor (201) is fixedly installed on the inner wall of the bottom of the base box (2). The top of the output shaft of the motor (201) is fixedly connected to the bottom of the positioning seat (4). A reciprocating mechanism is provided between the vertical box (3) and the base box (2). A detection mechanism is provided inside the frame (1).

2. The pipe inner wall defect detection device according to claim 1, characterized in that: The positioning mechanism includes two hydraulic cylinders (401) and two arc-shaped clamps (402). The hydraulic cylinders (401) are fixedly installed on both sides of the positioning seat (4). Two arc-shaped clamps (402) are slidably installed on the inner wall of the bottom of the positioning seat (4). The output shaft of the hydraulic cylinder (401) is fixedly connected to the outer side of the corresponding arc-shaped clamp (402). A rubber pad is provided on the inner side of the arc-shaped clamp (402). A pipe (403) is placed inside the positioning seat (4). The arc-shaped clamps (402) are adapted to the pipe (403).

3. The pipe inner wall defect detection device according to claim 1, characterized in that: The reciprocating mechanism includes a reciprocating lead screw (301) and a lead screw seat (302). The same reciprocating lead screw (301) is rotatably installed on the bottom inner wall of the bottom box (2) and the top inner wall of the vertical box (3). The lead screw seat (302) is sleeved on the reciprocating lead screw (301). The right side of the lead screw seat (302) extends to the outside of the vertical box (3). The lead screw seat (302) is slidably connected to the seat hole (8). An adjustment mechanism is provided on the lead screw seat (302). A transmission mechanism is provided between the reciprocating lead screw (301) and the output shaft of the motor (201).

4. The pipe inner wall defect detection device according to claim 3, characterized in that: The transmission mechanism includes two transmission wheels (202) and a transmission belt (203). The reciprocating screw (301) and the output shaft of the motor (201) are both fixedly fitted with transmission wheels (202). The transmission wheels (202) are located inside the bottom box (2). The two transmission wheels (202) are fitted with the same transmission belt (203).

5. The pipe inner wall defect detection device according to claim 1, characterized in that: The adjusting mechanism includes a screw (5) and a nut (501). The nut (501) is rotatably mounted on the top of the lead screw seat (302). The screw (5) is threaded onto the nut (501). The bottom end of the screw (5) extends below the lead screw seat (302).

6. The pipe inner wall defect detection device according to claim 5, characterized in that: The detection mechanism includes an industrial camera (6) and two cameras (601). The industrial camera (6) is fixedly installed at the bottom of the screw (5). Cameras (601) are provided on both sides of the industrial camera (6). The cameras (601) are staggered. The industrial camera (6) is adapted to the pipe (403). A limit mechanism is provided between the industrial camera (6) and the lead screw seat (302).

7. The pipe inner wall defect detection device according to claim 1, characterized in that: A controller (7) is provided on the front side of the top of the base box (2). The controller (7) is located in front of the positioning seat (4). The controller (7) is electrically connected to the motor (201) and the camera (601).

8. A pipe inner wall defect detection device according to claim 6, characterized in that: The limiting mechanism includes a limiting rod (9) and a limiting plate (901). The limiting rod (9) is fixedly installed at the bottom of the screw seat (302). The limiting rod (9) is located on the left side of the screw (5). The limiting plate (901) is fixedly installed on the left side of the industrial camera (6). The limiting rod (9) and the limiting plate (901) are slidably connected.

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