Heating furnace pipeline corrosion detection device and method

Abstract

The invention provides a heating furnace pipeline corrosion detection device and method, and relates to the technical field of pipeline detection. The detection mechanism is used for performing contact type ultrasonic thickness measurement on the interior of the pipeline; the moving mechanism is used for controlling the main body and the detection mechanism to move on the inner wall of the pipeline. According to the heating furnace pipeline corrosion detection device and method, through mutual combination of the arranged detection mechanism and the moving mechanism, overall rotation and transverse movement of the detection head can be achieved, so that the detection head can be driven to move into the pipeline to conduct abutting contact ultrasonic detection, handheld operation of an operator is not needed, and the detection efficiency is improved. The whole device carries out detection from the interior of the pipeline, so that the accuracy of detection data is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline detection, and in particular to a device and method for detecting corrosion of a heating furnace pipeline. Background Art

[0002] In the existing industrial production and life, pipelines can be seen everywhere. Pipelines have brought great convenience to people's lives. However, due to the complex working environment of pipelines, pipelines will be corroded during long-term use. Especially for some pipelines with higher pressure, excessive corrosion will inevitably cause damage to the pipeline. Therefore, in the actual use process, people will regularly inspect the pipelines through detection equipment. Ultrasonic detection equipment is a commonly used detection equipment in pipeline inspection. Ultrasonic detection equipment mainly uses the principle of ultrasonic flaw detection to perform pipeline inspection.

[0003] At present, when the pipeline of the heating furnace is in use, a certain degree of smoke corrosion may occur inside after long-term use. If it is not checked in time, it is easy to cause damage to the pipeline, resulting in gas leakage, and finally causing serious damage to the equipment. In the prior art, detection and inspection are generally carried out based on wall thickness, and ultrasound is often used to contact the surface of the pipeline and measure its thickness using ultrasound to determine the corrosion state of the pipeline. However, this method is to detect from the outside. If a certain degree of impurities are attached to the internal pipeline, it will affect the value of the ultrasonic detection. Therefore, detection is generally carried out from the inside of the pipeline, which has higher accuracy. However, the current pipeline is laid for a long time, and the operator cannot directly enter the pipeline, or entering the pipeline is cumbersome, resulting in the problem that the detection process is blocked. Therefore, a heating furnace pipeline corrosion detection device and method are proposed to solve the above-mentioned problems. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a device and method for detecting corrosion of a heating furnace pipeline, which solves the problem that when performing corrosion detection on the pipeline of a heating furnace in the prior art, the value detected from the outside using ultrasound is inaccurate, and the detection from the inside cannot be directly deep, and the impurities attached to the inside will affect the accuracy of the detection value.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a heating furnace pipeline corrosion detection device, comprising a main body; a detection mechanism, used for contact ultrasonic thickness measurement of the inside of the pipeline; a moving mechanism, used for controlling the movement of the main body and the detection mechanism on the inner wall of the pipeline; the moving mechanism comprises a driving device and a resistance device, the driving device drives the resistance device to perform abutment contact movement in pipelines of different diameters, the moving mechanism is arranged inside the main body, and the detection mechanism is arranged on the main body, the detection mechanism can follow the movement of the moving mechanism, while forming abutment detection thickness in pipelines of different diameters and cleaning the impurities on the internal pipe wall.

[0006] Furthermore, the main body is connected to a fixed sleeve via a connecting column, one end of the fixed sleeve is rotatably connected to a rotating sleeve, and the detection mechanism is connected to the rotating sleeve.

[0007] Furthermore, the detection mechanism includes a resistance rod, one end of which is rotatably connected to a support, the resistance rod is connected to a rotating sleeve, the support is connected to a cleaning plate, and the cleaning plate is provided with a detection head.

[0008] Furthermore, the driving device includes a driving motor, the driving motor is fixed inside the main body, the output end of the driving motor is connected to a worm, and one end of the worm is connected to a fixed shaft.

[0009] Furthermore, one end of the fixed shaft is connected to a top plate, the fixed shaft is connected to a rotating sleeve through a connecting rod, the middle part of the resistance rod is rotatably connected to the rotating sleeve, the left end of the resistance rod is abutted against a pressing plate, the pressing plate is slidably connected to the fixed shaft, a resistance spring is arranged between the top plate and the pressing plate, and a blade is fixedly connected to the resistance rod.

[0010] Furthermore, the detection mechanism also includes a shooting device, which includes a fixed frame, the fixed frame is fixed on the cleaning plate, a CCD camera is slidably connected to the fixed frame, the bottom of the detection head is fixedly connected to a base plate, the bottom of the base plate is connected to the fixed frame through a small spring, and the upper and lower parts of the base plate are both equipped with switch contacts for controlling the shooting of the CCD camera.

[0011] Furthermore, the moving mechanism includes a worm wheel, which is meshed with a worm, and the axis of the worm wheel is fixedly connected to a connecting shaft, and both ends of the connecting shaft are rotatably connected to the main body. The connecting shaft is also fixedly connected to a pulley 2, and the pulley 2 is transmission-connected to the pulley 1 through a belt, and the side of the pulley 1 is fixedly connected to a roller, and the axis of the roller is rotatably connected to a parallel frame 1 through a connecting rod, one end of the parallel frame 1 is rotatably connected to the connecting shaft, and the parallel frame 1 is rotatably connected to a parallel frame 2 through a parallel rod, and both sides of the parallel frame 2 are rotatably connected to rear wheels, and the bottom of the parallel frame 2 is rotatably connected to the main body, and the parallel frame 1 is connected to a tension spring, and one end of the tension spring is connected to a fixed sleeve.

[0012] Furthermore, it also includes a wire-unwinding and unwinding device, which includes a clamping shaft, which is rotatably connected to the inside of the main body, and a wire is wound around the clamping shaft. The detection head is electrically connected to the controller through the wire, and a coil spring is arranged inside the main body, one end of the coil spring is connected to the clamping shaft, and the other end of the coil spring is connected to the main body.

[0013] A method for detecting corrosion of heating furnace pipelines. Step A: Adaptive support, using the oblique stretching of the stretching spring to control the parallel frame 1 and the parallel frame 2 to move in a parallelogram, ensuring that the roller and the rear wheel are in parallel contact with the inner wall of the pipe; Step B: Move, the rotation of the drive motor will drive the rotation of the worm, and then drive the three worm wheels to rotate, and the belt transmission will drive the roller to rotate, thereby generating driving force for the entire device to move; Step C: Cleaning: The rotation of the driving motor will drive the fixed shaft to rotate, and then drive the rotating sleeve to rotate. The rotating sleeve will drive the resistance rod and the cleaning plate to rotate. The rotation of the cleaning plate will rotate and clean the inner wall of the pipeline; Step D: Rotational movement detection, through the movement of the equipment and the rotation of the cleaning plate, the detection head is driven to rotate and move laterally on the inner wall of the pipeline. The operator controls the start and stop of the detection head according to the buttons of the controller, and finally performs abutment-type movement and rotational thickness measurement in the pipeline.

[0014] Compared with the prior art, the present invention has the following beneficial effects: Compared with the prior art, the heating furnace pipeline corrosion detection device and method provided by the present invention have the following beneficial effects: 1. The heating furnace pipeline corrosion detection device and method can realize the overall rotation and lateral movement of the detection head through the combination of the detection mechanism and the moving mechanism, thereby driving the detection head to move deep into the interior of the pipeline to perform abutment contact ultrasonic detection. There is no need for handheld operation by the operator. The entire device detects from the inside of the pipeline, thereby increasing the accuracy of the detection data.

[0015] 2. The heating furnace pipeline corrosion detection device and method can clean the impurities attached to the inner wall by using the cleaning plate when the whole device rotates, and the detection head at the rear position can further improve the detection error caused by the detection head being affected by the attachment of impurities during detection.

[0016] 3. The heating furnace pipeline corrosion detection device and method uses a CCD camera to control the CCD camera to take pictures whenever the cleaning plate fluctuates. Because in the fluctuating state, there may be impurities attached or pits after corrosion, so the overall fluctuating process is used to directly take pictures of the position and transmit it to the rear operator, who judges the position, making it convenient for the operator to check the situation inside the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a heating furnace pipeline corrosion detection device proposed by the present invention; Figure 2 A schematic diagram of the connection between a driving device and a moving device of a heating furnace pipeline corrosion detection device proposed by the present invention; Figure 3 A schematic diagram of a detection mechanism of a heating furnace pipeline corrosion detection device proposed by the present invention; Figure 4 A schematic diagram of the cleaning plate structure of a heating furnace pipeline corrosion detection device proposed by the present invention; Figure 5 This is a schematic diagram of the structure of a photographing device of a heating furnace pipeline corrosion detection device proposed by the present invention; Figure 6 A schematic diagram of the connection of a tension spring of a heating furnace pipeline corrosion detection device proposed by the present invention; Figure 7 This is a schematic diagram of a winding device of a heating furnace pipeline corrosion detection device proposed by the present invention.

[0018] In the figure: 1. main body; 101. fixed sleeve; 102. rotating sleeve; 103. pressing sheet; 104. top sheet; 105. pressing spring; 2. detection mechanism; 201. contact rod; 202. blade; 203. cleaning plate; 204. support; 205. detection head; 2051. fixing frame; 2052. CCD camera; 2053. bottom plate; 2054. small spring; 2055. switch contact; 206 , wire; 207, clamping shaft; 208, coil spring; 209, controller; 3, connecting column; 4, moving mechanism; 401, driving motor; 402, worm; 403, worm wheel; 404, parallel frame one; 405, parallel frame two; 406, roller; 407, pulley one; 408, pulley two; 409, connecting shaft; 410, tension spring; 411, fixed shaft; 412, parallel rod; 413, rear wheel. DETAILED DESCRIPTION

[0019] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0020] Example 1

[0021] See also Figures 1 to 7 A heating furnace pipeline corrosion detection device includes a main body 1; a detection mechanism 2, which is used to perform contact ultrasonic thickness measurement on the inside of the pipeline; a moving mechanism 4, which is used to control the movement of the main body 1 and the detection mechanism 2 on the inner wall of the pipeline; the moving mechanism 4 includes a driving device and a resistance device, and the driving device drives the resistance device to perform a pressure contact movement in pipelines of different diameters.

[0022] In this embodiment, the main body 1 is connected to a fixed sleeve 101 via a connecting column 3 , one end of the fixed sleeve 101 is rotatably connected to a rotating sleeve 102 , and the detection mechanism 2 is connected to the rotating sleeve 102 .

[0023] Furthermore, the detection mechanism 2 includes a resisting rod 201, one end of which is rotatably connected to a support 204, the resisting rod 201 is connected to the rotating sleeve 102, a cleaning plate 203 is connected to the support 204, and a detection head 205 is arranged on the cleaning plate 203. The driving device includes a driving motor 401, the driving motor 401 is fixed inside the main body 1, the output end of the driving motor 401 is connected to a worm 402, and one end of the worm 402 is connected to a fixed shaft 411. Under the rotation of the driving motor 401, the fixed shaft 411 is also driven to rotate, and the rotation of the fixed shaft 411 will drive the rotating sleeve 102 to rotate, so the resisting rod 201 connected thereto will rotate with the center of the rotating sleeve 102, and the detection head 205 at the rear will follow the cleaning plate 203 that has cleaned the impurities to rotate, and then the pipe wall is automatically detected by rotating forward movement.

[0024] Furthermore, one end of the fixed shaft 411 is connected with a top sheet 104, and the fixed shaft 411 is connected with the rotating sleeve 102 by a connecting rod, and the middle part of the resisting rod 201 is rotatably connected to the rotating sleeve 102, and the left end of the resisting rod 201 is abutted with a pressing plate 103, and the pressing plate 103 is slidably connected to the fixed shaft 411. A pressing spring 105 is provided between the top sheet 104 and the pressing plate 103, and a blade 202 is fixedly connected to the resisting rod 201. The effect of the blade 202 is to rotate and clean the internal smoke, and avoid the smoke in the heating furnace pipeline from causing unclear photography. The pressing spring 105 provided by the arrangement will provide a lateral moving force to the pressing plate 103, and the pressing plate 103 will push the resisting rod 201 to do a lever movement, and then control the cleaning plate 203 to always fit on the tube wall, and can also carry out elastic contact detection while cleaning. Furthermore, when the abutment rod 201 rotates, the pressing piece 103 will not interfere with the motion of the abutment rod 201 . Because the abutment rod 201 is in an abutting state, the abutment rod 201 will rotate and slide on the side of the pressing piece 103 .

[0025] In addition, the detection mechanism 2 also includes a shooting device, which includes a fixed frame 2051, the fixed frame 2051 is fixed on the cleaning plate 203, a CCD camera 2052 is slidably connected to the fixed frame 2051, the bottom of the detection head 205 is fixedly connected to a base plate 2053, the bottom of the base plate 2053 is connected to the fixed frame 2051 through a small spring 2054, and the upper and lower parts of the base plate 2053 are both equipped with switch contacts 2055 for controlling the shooting of the CCD camera 2052. The entire device takes into account the need to take pictures and keep records of corroded areas, so a CCD camera 2052 is set. When the cleaning plate 203 generates a large vibration during rotation or movement, it will drive the detection head 205 and the base plate 2053 to move up and down, and squeeze the small spring 2054, thereby driving the switch contacts 2055 at the upper and lower positions of the base plate 2053 to move up and down, and then contact the fixed frame 2051 or the bottom of the CCD camera 2052, and finally trigger the button shooting of the CCD camera 2052. When the entire device is in normal movement, the CCD camera 2052 will not record, and will only take pictures of the unknown when the fluctuation triggers the switch.

[0026] In addition, the moving mechanism 4 includes a worm gear 403, which is meshed with the worm 402. The axis of the worm gear 403 is fixedly connected to a connecting shaft 409, and both ends of the connecting shaft 409 are rotatably connected to the main body 1. The connecting shaft 409 is also fixedly connected to a pulley 2 408, which is transmission-connected to a pulley 1 407 through a belt, and a roller 406 is fixedly connected to the side of the pulley 1 407. The axis of the roller 406 is rotatably connected to a parallel frame 1 404 through a connecting rod, and one end of the parallel frame 1 404 is rotatably connected to the connecting shaft 409. The parallel frame 1 404 is rotatably connected to a parallel frame 2 405 through a parallel rod 412, and the two sides of the parallel frame 2 405 are rotatably connected to rear wheels 413. The rotation of the driving motor 401 will drive the rotation of the worm 402, and the rotation of the worm 402 will drive the rotation of the worm wheel 403, and then drive the connecting shaft 409 to rotate, and the connecting shaft 409 will drive the rotation of the pulley 2 408, and the belt transmission will drive the pulley 1 407 and the roller 406 to rotate, and finally the roller 406 is used as the driving force to drive the entire device forward, the bottom of the parallel frame 2 405 is rotatably connected to the main body 1, and the parallel frame 1 404 is connected to a tension spring 410, and one end of the tension spring 410 is connected to the fixed sleeve 101. By stretching the three stretch springs 410, the parallel frame 1 404 and the parallel frame 2 405 will be driven to move in a parallelogram shape, thereby controlling the roller 406 and the rear wheel 413 to always fit against the pipe wall. Moreover, the stretch spring 410 is in a stretchable state, so the parallel frame 1 404 and the parallel frame 2 405 can be adaptively adjusted according to the diameter of the pipe wall, so that the roller 406 and the rear wheel 413 are against pipes of different diameters.

[0027] It is worth noting that it also includes a wire-releasing and winding device, which includes a clamping shaft 207, which is rotatably connected to the inside of the main body 1, and a wire 206 is wound around the clamping shaft 207. The detection head 205 is electrically connected to the controller 209 through the wire 206. A coil spring 208 is arranged inside the main body 1, and one end of the coil spring 208 is connected to the clamping shaft 207, and the other end of the coil spring 208 is connected to the main body 1. When the device moves forward, it will pull the card shaft 207 to rotate and pay out the line, because the detection head 205 needs to be connected to the controller 209 through the wire 206 to transmit the data back to the terminal, and the operator can control the real-time detection of the detection head 205 through the button of the controller 209 according to the distance of the line pay out, and finally form a segmented detection. The purpose of the coil spring 208 is to prevent it from being entangled with the wire 206 when the device returns. Therefore, when the device returns, the coil spring 208 will also rely on the elastic force to rewind the wire 206. The overall principle is similar to the contraction and expansion of the tape measure. The operator can also directly measure the distance the device has moved according to the length of the line pay out.

[0028] Example 2 A method for detecting corrosion of a heating furnace pipeline; Step A: Adaptive support, using the oblique stretching of the stretching spring 410 to control the parallel frame 1 404 and the parallel frame 2 405 to move in a parallelogram, ensuring that the roller 406 and the rear wheel 413 are in parallel contact with the inner wall of the pipe; Step B: Moving, the rotation of the driving motor 401 will drive the rotation of the worm 402, and then drive the three worm wheels 403 to rotate, and the belt transmission will drive the roller 406 to rotate, thereby generating a driving force for the entire device to move; Step C: cleaning, the rotation of the driving motor 401 will drive the fixed shaft 411 to rotate, and then drive the rotating sleeve 102 to rotate, and the rotating sleeve 102 will drive the abutting rod 201 and the cleaning plate 203 to rotate, and the rotation of the cleaning plate 203 will rotate and clean the inner wall of the pipeline; Step D: Rotational movement detection, through the movement of the equipment and the rotation of the cleaning plate 203, the detection head 205 is driven to rotate and move laterally on the inner wall of the pipeline. The operator controls the start and stop of the detection head 205 according to the buttons of the controller 209, and finally performs abutment-type movement and rotation-type thickness measurement in the pipeline.

[0029] The working principle is that the operator first needs to place the entire device at the position of the heating furnace pipe mouth, and then through the stretching of the three tension springs 410, the parallel frame 1 404 and the parallel frame 2 405 will be driven to move in a parallelogram, thereby controlling the roller 406 and the rear wheel 413 to always fit against the pipe wall, and the tension spring 410 is in a stretchable state, so the parallel frame 1 404 and the parallel frame 2 405 can be adaptively adjusted according to the diameter of the pipe wall, so that the roller 406 and the rear wheel 413 are against pipes of different diameters. Then, the rotation of the driving motor 401 will drive the rotation of the worm 402, and the rotation of the worm 402 will drive the rotation of the worm wheel 403, and then drive the connecting shaft 409 to rotate, and the connecting shaft 409 will drive the rotation of the pulley 2 408, and the belt transmission will drive the pulley 1 407 and the roller 406 to rotate, and finally the roller 406 is used as the driving force to drive the entire device forward, and the entire moving mechanism 4 is provided with three groups, which are distributed in an array with the center of the main body 1, and the support of the triangular position can greatly ensure the stability of the equipment during movement. At the same time, the rotation of the driving motor 401 will also drive the rotation of the fixed shaft 411, and the rotation of the fixed shaft 411 will drive the rotating sleeve 102 to rotate, so the interference rod 201 connected thereto will rotate with the center of the rotating sleeve 102, and finally drive the cleaning plate 203 to rotate, and the three surfaces of the cleaning plate 203 are provided with grooves to clean the impurities in the forward direction and the circumferential direction, and the detection head 205 at the rear will follow the cleaning plate 203 that has cleaned the impurities to rotate, and then perform a rotational forward automatic detection of the pipe wall. The entire device takes into account the need to take photos and keep records of the corroded areas, so a CCD camera 2052 is set. When the cleaning plate 203 generates a large vibration during the rotation or movement, it will drive the detection head 205 and the base plate 2053 to move up and down, and squeeze the small spring 2054, thereby driving the switch contacts 2055 at the upper and lower positions of the base plate 2053 to move up and down, and then contact the fixing frame 2051 or the bottom of the CCD camera 2052, and finally trigger the button shooting of the CCD camera 2052. Because the detection head 205 will also rotate when the cleaning plate 203 rotates, the small spring 2054 can also always provide elastic force to make the detection head 205 abut against the pipe wall to achieve ultrasonic detection. If the fluctuation generated when the detection head 205 abuts during the rotation or movement is large, the pipe wall may be in a state of corrosion or depression. Therefore, according to this situation, the fluctuation position can be photographed and sampled, and transmitted to the operator at the rear for analysis, which is convenient for later maintenance and repair. When the detection is completed, the driving motor 401 can be controlled to reverse, thereby driving the entire device to move in the opposite direction and achieve automatic retraction and return.

[0030] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the described module can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heating furnace pipeline corrosion detection device, characterized in that: include Subject (1); A detection mechanism (2) is used to perform contact ultrasonic thickness measurement on the interior of the pipeline; A moving mechanism (4) is used to control the main body (1) and the detection mechanism (2) to move on the inner wall of the pipeline; The moving mechanism (4) comprises a driving device and a resistance device, the driving device drives the resistance device to perform a resistance contact movement in pipes of different diameters, the moving mechanism (4) is arranged inside the main body (1), the detection mechanism (2) is arranged on the main body (1), and the detection mechanism (2) can follow the movement of the moving mechanism (4) to form a resistance detection thickness in pipes of different diameters and clean the impurities on the internal pipe wall.

2. A heating furnace pipeline corrosion detection device according to claim 1, characterized in that: The main body (1) is connected to a fixed sleeve (101) via a connecting column (3); one end of the fixed sleeve (101) is rotatably connected to a rotating sleeve (102); and the detection mechanism (2) is connected to the rotating sleeve (102).

3. A heating furnace pipeline corrosion detection device according to claim 2, characterized in that: The detection mechanism (2) comprises a resisting rod (201), one end of the resisting rod (201) being rotatably connected to a support (204), the resisting rod (201) being connected to a rotating sleeve (102), a cleaning plate (203) being connected to the support (204), and a detection head (205) being arranged on the cleaning plate (203).

4. A heating furnace pipeline corrosion detection device according to claim 3, characterized in that: The driving device comprises a driving motor (401), the driving motor (401) being fixed inside the main body (1), the output end of the driving motor (401) being connected to a worm (402), and one end of the worm (402) being connected to a fixed shaft (411).

5. A heating furnace pipeline corrosion detection device according to claim 4, characterized in that: One end of the fixed shaft (411) is connected to a top sheet (104), the fixed shaft (411) is connected to a rotating sleeve (102) via a connecting rod, the middle part of the abutment rod (201) is rotatably connected to the rotating sleeve (102), the left end of the abutment rod (201) is abutted against a pressing sheet (103), the pressing sheet (103) is slidably connected to the fixed shaft (411), a pressing spring (105) is provided between the top sheet (104) and the pressing sheet (103), and the blade (202) is fixedly connected to the abutment rod (201).

6. A heating furnace pipeline corrosion detection device according to claim 3, characterized in that: The detection mechanism (2) also includes a shooting device, which includes a fixing frame (2051), the fixing frame (2051) is fixed on the cleaning plate (203), a CCD camera (2052) is slidably connected to the fixing frame (2051), the bottom of the detection head (205) is fixedly connected to a bottom plate (2053), the bottom of the bottom plate (2053) is connected to the fixing frame (2051) via a small spring (2054), and switch contacts (2055) for controlling the shooting of the CCD camera (2052) are installed on the upper and lower parts of the bottom plate (2053).

7. A heating furnace pipeline corrosion detection device according to claim 6, characterized in that: The moving mechanism (4) comprises a worm wheel (403), the worm wheel (403) meshing with the worm (402), the axis of the worm wheel (403) being fixedly connected to a connecting shaft (409), the two ends of the connecting shaft (409) being rotatably connected to the main body (1), the connecting shaft (409) being also fixedly connected to a second pulley (408), the second pulley (408) being transmission-connected to a first pulley (407) via a belt, the side of the first pulley (407) being fixedly connected to a roller (406), the axis of the roller (406) being connected to the main body (1) via a connecting shaft. The rod is rotatably connected to a parallel frame 1 (404), one end of the parallel frame 1 (404) is rotatably connected to a connecting shaft (409), the parallel frame 1 (404) is rotatably connected to a parallel frame 2 (405) via a parallel rod (412), both sides of the parallel frame 2 (405) are rotatably connected to rear wheels (413), the bottom of the parallel frame 2 (405) is rotatably connected to the main body (1), the parallel frame 1 (404) is connected to a tension spring (410), and one end of the tension spring (410) is connected to a fixed sleeve (101).

8. A heating furnace pipeline corrosion detection device according to claim 7, characterized in that: The invention also comprises a wire-releasing and winding device, wherein the wire-releasing and winding device comprises a clamping shaft (207), wherein the clamping shaft (207) is rotatably connected to the inside of the main body (1), wherein a wire (206) is wound around the clamping shaft (207), wherein the detection head (205) is electrically connected to a controller (209) via the wire (206), and wherein a coil spring (208) is arranged inside the main body (1), wherein one end of the coil spring (208) is connected to the clamping shaft (207), and the other end of the coil spring (208) is connected to the main body (1).

9. A method for detecting corrosion of a heating furnace pipeline, characterized in that: The device comprises a heating furnace pipeline corrosion detection device applied to any one of claims 1 to 8, and further comprises the following steps: Step A: Adaptive support, using the oblique stretching of the stretching spring (410) to control the parallel frame 1 (404) and the parallel frame 2 (405) to move in a parallelogram, ensuring that the roller (406) and the rear wheel (413) are in parallel contact with the inner wall of the pipe; Step B: Moving, the rotation of the driving motor (401) will drive the rotation of the worm (402), and then drive the three worm wheels (403) to rotate, and the belt transmission will drive the roller (406) to rotate, thereby generating driving force for the entire device to move; Step C: cleaning, the rotation of the driving motor (401) will drive the fixed shaft (411) to rotate, and then drive the rotating sleeve (102) to rotate, and the rotating sleeve (102) will drive the resistance rod (201) and the cleaning plate (203) to rotate, and the rotation of the cleaning plate (203) will rotate and clean the inner wall of the pipeline; Step D: Rotational movement detection, through the movement of the equipment and the rotation of the cleaning plate (203), the detection head (205) is driven to rotate and move horizontally on the inner wall of the pipeline. The operator controls the start and stop of the detection head (205) according to the button of the controller (209), and finally performs abutment-type movement and rotation-type thickness measurement in the pipeline.

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