Industrial gas pipeline wall thickness detection device and use method thereof

Abstract

The invention relates to the technical field of industrial pipeline detection, and discloses an industrial gas pipeline wall thickness detection device and a use method thereof, the industrial gas pipeline wall thickness detection device comprises a mounting seat, a support guide assembly, a positioning guide assembly, a shell, a walking assembly, a mounting sleeve, a wall thickness detector and a support adjustment assembly; a mounting opening is formed in the center of the mounting base, the mounting sleeve is slidably mounted in the mounting opening, the wall thickness detector is detachably and fixedly mounted in the mounting sleeve, the shell is fixedly mounted on the top side of the mounting base, and the supporting and adjusting assembly is arranged on the top side of the mounting base and connected with the mounting sleeve. The device is reasonable in design, the convenience of actual operation and the accuracy of detection are fully considered, the working efficiency is improved, the reliability of detection data is ensured, meanwhile, an operator can conveniently and flexibly carry out multi-point detection, and the working efficiency of gas pipeline wall thickness detection is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial pipeline detection, and in particular to an industrial gas pipeline wall thickness detection device and a use method thereof. Background Art

[0002] In industrial production, gas pipelines are key facilities for transporting gas, and their wall thickness is directly related to the safety and reliability of the pipelines. However, traditional gas pipeline wall thickness detection methods often rely on manual operation of detection instruments, which has many inconveniences and limitations.

[0003] Most of the existing detection technologies use handheld wall thickness detectors. The operator needs to manually place the detector probe on the pipe wall for measurement. When facing the wall thickness detection of gas pipelines, this method is difficult to ensure the vertical contact between the probe and the pipe wall and the stable detection position. It is easy to cause the detection accuracy to decrease due to human factors. Sometimes some auxiliary equipment is used for auxiliary positioning, but these auxiliary positioning devices often need to be manually disassembled and moved after each detection. For long-distance gas pipeline detection, frequent disassembly and relocation of the detection position is extremely time-consuming and labor-intensive, which seriously affects the detection efficiency.

[0004] In addition, during the detection process, there is a lack of effective devices to assist operators in real-time monitoring of detection data and convenient operation. At the same time, the structural design of traditional detection devices is not conducive to maintenance and replacement of parts. Once the detector fails or needs calibration, it often requires a complicated disassembly and reinstallation process, which increases maintenance costs and downtime.

[0005] To overcome these problems, the present invention proposes a novel industrial gas pipeline wall thickness detection device and a use method thereof. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an industrial gas pipeline wall thickness detection device and a method of using the same.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An industrial gas pipeline wall thickness detection device comprises a mounting seat, a support guide assembly, a positioning guide assembly, a housing, a travel assembly, a mounting sleeve, a wall thickness detector and a support adjustment assembly;

[0009] A mounting opening is provided at the center of the mounting seat, the mounting sleeve is slidably installed in the mounting opening, and the wall thickness detector is detachably fixedly installed in the mounting sleeve, the shell is fixedly installed on the top side of the mounting seat, the support adjustment assembly is arranged on the top side of the mounting seat and connected to the mounting sleeve, and the support adjustment assembly is located in the shell, mounting grooves 1 are provided on both sides of the mounting seat, the support guide assembly is arranged in two mounting grooves 1, mounting grooves 3 are provided at the lower positions of the front and rear sides of the mounting seat, the positioning guide assembly is arranged in two mounting grooves 3, mounting grooves 2 are provided at the four corners of the bottom side of the mounting seat, the walking assembly is arranged in four mounting grooves 2, and a control panel is provided on the outside of the shell.

[0010] Preferably, the support and guide assembly includes two arc-shaped plates, two support shafts, a plurality of support blocks, four torsion springs and a plurality of guide wheels; support shafts are fixedly installed in two mounting grooves; arc-shaped plates are radially rotatably installed on the two support shafts; the two arc-shaped plates are symmetrically arranged with the mounting seat as the center; a plurality of support blocks are fixedly installed on the inner arc surfaces of the two arc-shaped plates; four guide wheels are rotatably installed on the plurality of support blocks; torsion springs are fixedly installed on the front and rear sides of the two arc-shaped plates with the support shaft as the center; the side of the torsion spring away from the arc-shaped plate is fixedly connected to the inner wall of the corresponding mounting groove.

[0011] Preferably, the positioning guide assembly includes two strip plates, two rotating pins, multiple guide wheels 2, a fixed bar and a protractor, the inner walls of the two mounting grooves 3 are both provided with rotating pins for damping rotation, the two rotating pins are both radially fixedly provided with strip plates, multiple guide wheels 2 are rotatably provided on the strip plates, protractors arranged in a ring shape are fixedly provided in the two mounting grooves 3 with the rotating pins as the center, and fixed bars corresponding to the corresponding protractors are fixedly provided on the sides of the two strip plates away from each other.

[0012] Preferably, the walking assembly includes four walking wheels and two driving motors, the walking wheels are rotatably installed in the four mounting grooves, the mounting seat is provided with two grooves, the driving motors are fixedly installed in the two grooves, and the output shafts of the two driving motors are respectively fixedly connected to the corresponding walking wheels axially.

[0013] Preferably, the support and adjustment assembly includes a lifting plate, a fixed plate, an electric cylinder and a plurality of guide rods; the lifting plate is fixedly mounted on the outer side of the mounting sleeve; a plurality of guide rods are fixedly mounted on the mounting seat; the plurality of guide rods are all slidably connected to the lifting plate; a same fixed plate is fixedly mounted on the top ends of the plurality of guide rods; an electric cylinder is fixedly mounted on the fixed plate; and a working end of the electric cylinder is fixedly mounted on the top side of the lifting plate.

[0014] Preferably, a support base is fixedly mounted on the outer side of the shell, the control panel is mounted on the support base with damped rotation, and a display screen is arranged on the control panel.

[0015] Preferably, a top cover is hingedly mounted on the top of the shell, and a second handle is fixedly mounted on the top cover.

[0016] Preferably, a handle 1 is fixedly mounted on the outer curved surface of the curved plate.

[0017] Preferably, a limit bolt is threadedly installed on the mounting sleeve, and one end of the limit bolt abuts against the outer side of the wall thickness detector.

[0018] Preferably, a limiting ring is fixedly installed on the outer side of the bottom of the installation sleeve, and the size of the limiting ring is larger than the size of the installation opening.

[0019] The present invention also provides a method for using an industrial gas pipeline wall thickness detection device, comprising the following steps:

[0020] S1: Use two handles 1 to control the two arc plates to move away from each other, so that the two arc plates can be in an open state, and then the two arc plates are clamped on the gas pipeline to be tested. At the same time, under the action of the torsion spring, it can be ensured that the multiple guide wheels 1 are in contact with the outer wall of the gas pipeline. Then, the two strip plates are unfolded and the multiple guide wheels 2 are in contact with the outer wall of the gas pipeline. The position of the fixed strip pointing to the protractor is observed to determine whether the mounting base is in a vertical state with the gas pipeline, and then the control panel is adjusted to an angle suitable for observation and operation;

[0021] S2: Turn on the power and start the drive motor. The drive motor controls the two traveling wheels to rotate, and controls the device to move along the gas pipeline to be inspected with the cooperation of the other two traveling wheels. The operator cleans the required inspection position in front of the walking direction and applies an appropriate amount of coupling agent. Then, the device is controlled to move to the position to be inspected, and the lifting plate is controlled by the electric cylinder to drive the installation sleeve to move downward, so that the probe of the wall thickness detector is against the position to be inspected and the wall thickness inspection operation is performed on it. The inspection data is displayed to the operator through the display screen. At the same time, during the inspection process, the operator is not affected to pre-process other positions to be inspected and apply coupling agent, thereby greatly improving the inspection efficiency.

[0022] S3: After the test is completed, use the two handles to open the arc plate and remove it from the gas pipeline. After removal, store the two strip plates to a vertical state. When the wall thickness detector needs to be stored or replaced separately, open the top cover through handle 2, then rotate the limit bolt to disengage it from the abutment state with the outside of the wall thickness detector, and then take the wall thickness detector out of the installation sleeve and store it separately or replace it with another wall thickness detector.

[0023] Compared with the prior art, the present invention provides an industrial gas pipeline wall thickness detection device and a method for using the same, which have the following beneficial effects:

[0024] 1. The accuracy and efficiency of detection are improved, because the device can be stably clamped on gas pipelines of different sizes through the support guide assembly, and the vertical contact between the detector probe and the pipeline wall can be ensured by the setting of the positioning guide assembly.

[0025] 2. Through the setting of the walking assembly, the operator can control it to move along the gas pipeline, so that multi-point detection can be achieved without frequent disassembly and assembly. At the same time, preparation work can be carried out at other locations without interrupting the detection, thereby reducing the detection time and improving work efficiency.

[0026] 3. The support and adjustment assembly is set to ensure that the wall thickness detector probe is in close contact or out of contact with the pipe wall, which not only ensures the accuracy of the test data, but also prevents the wall thickness detector probe from being damaged when the device is moving.

[0027] 4. Through the setting of the display screen of the control panel, the operator can monitor the test data in real time, ensuring the transparency and reliability of the test process. At the same time, the inclination of the control panel can be adjusted as needed, so as to adapt well to the operating habits of different operators.

[0028] 5. The structural design of the device facilitates maintenance and replacement of parts, such as the wall thickness detector, thereby reducing maintenance costs and extending the service life of the device.

[0029] In summary, the design of the detection device fully considers the convenience of actual operation and the accuracy of detection, which not only improves work efficiency, but also ensures the reliability of detection data. The unique setting of the walking component and the support adjustment component enables the operator to flexibly perform multi-point detection while protecting the detection equipment from damage. In addition, the display screen and adjustable inclination design of the control panel further enhance the comfort of operation and the transparency of the detection process. The structural maintenance convenience design not only reduces the long-term use cost, but also extends the service life of the device. Therefore, the device has broad application prospects and practical value in the field of industrial gas pipeline wall thickness detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of an industrial gas pipeline wall thickness detection device proposed by the present invention;

[0031] Figure 2 For the present invention Figure 1 A schematic diagram of a partial cross-sectional structure;

[0032] Figure 3 For the present invention Figure 1 Schematic diagram of the local three-dimensional structure;

[0033] Figure 4 It is a schematic diagram of a partial three-dimensional structure of the support and guide assembly proposed by the present invention;

[0034] Figure 5 It is a schematic diagram of the partial three-dimensional structure of the positioning and guiding assembly proposed in the present invention.

[0035] In the figure: 1. mounting base; 101. mounting opening; 102. mounting slot 1; 103. mounting slot 2; 104. mounting slot 3; 11. walking wheel; 12. driving motor; 2. arc plate; 21. supporting shaft; 22. torsion spring; 23. supporting block; 24. guide wheel 1; 25. handle 1; 3. strip plate; 31. rotating pin; 32. guide wheel 2; 33. fixing strip; 34. protractor; 4. shell; 41. top cover; 42. handle 2; 5. mounting sleeve; 501. limiting ring; 51. lifting plate; 52. guide rod; 53. fixing plate; 54. electric cylinder; 6. control panel; 61. display screen; 7. wall thickness detector. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] Reference Figure 1-Figure 5, an industrial gas pipeline wall thickness detection device, comprising a mounting seat 1, a shell 4, a mounting sleeve 5 and a wall thickness detector 7, a mounting seat 1 having a mounting opening 101 in the center, the mounting sleeve 5 being slidably mounted in the mounting opening 101, and the wall thickness detector 7 being detachably fixedly mounted in the mounting sleeve 5, the shell 4 being fixedly mounted on the top side of the mounting seat 1, a lifting plate 51 being fixedly mounted on the outer side of the mounting sleeve 5, a plurality of guide rods 52 being fixedly mounted on the mounting seat 1, the plurality of guide rods 52 being slidably connected to the lifting plate 51, the top ends of the plurality of guide rods 52 being fixedly mounted with a same fixing plate 53, the fixing plate 53 being fixedly mounted with an electric cylinder 54, the working end of the electric cylinder 54 being fixedly mounted On the top side of the lifting plate 51, the installation sleeve 5 can be controlled to be lifted or lowered as needed, so as to adjust the contact state between the wall thickness detector 7 probe and the gas pipeline. Installation grooves 102 are provided on both sides of the mounting seat 1, and support shafts 21 are fixedly installed in the two installation grooves 102. Arc plates 2 are radially rotatably installed on the two support shafts 21. The two arc plates 2 are symmetrically arranged with the mounting seat 1 as the center. Multiple support blocks 23 are fixedly installed on the inner arc surfaces of the two arc plates 2, and four guide wheels 24 are rotatably installed on the multiple support blocks 23. Torsion springs 22 are fixedly installed on the front and rear sides of the two arc plates 2 with the support shaft 21 as the center. The side of the arc plate 22 away from the arc plate 2 is fixedly connected to the inner wall of the corresponding mounting groove 102, which can control the device to be stuck on gas pipes of different sizes and facilitate the position adjustment of the device along the gas pipe. The mounting seat 1 is provided with mounting grooves 3 104 at the lower position on both the front and rear sides. The inner walls of the two mounting grooves 3 104 are both equipped with rotating pins 31 for damping rotation. The two rotating pins 31 are radially fixedly installed with strip plates 3. A plurality of guide wheels 2 32 are rotatably installed on the strip plates 3. The two mounting grooves 3 104 are fixedly installed with protractors 34 arranged in an annular shape based on the rotating pin 31 as the center. The two strip plates 3 are fixedly installed with the corresponding protractors 34 on the sides away from each other. The fixing strip 33 corresponding to the angle gauge 34 can position the device along the direction of the gas pipeline and measure whether the mounting base 1 is perpendicular to the axis of the gas pipeline through two strip plates 3 and multiple guide wheels 2 32 when the device is stuck on the gas pipeline. The four corners of the bottom side of the mounting base 1 are provided with mounting grooves 2 103, and the four mounting grooves 2 103 are rotatably installed with walking wheels 11. The mounting base 1 is provided with two grooves, and the driving motors 12 are fixedly installed in the two grooves. The output shafts of the two driving motors 12 are respectively axially fixedly connected with the corresponding walking wheels 11, so that the device can be controlled to perform self-propelled operation along the gas pipeline. A control panel 6 is provided on the outside of the shell 4.

[0039] In this embodiment, in order to facilitate the operator to adjust the inclination angle of the control panel 6 according to his own operating habits, and at the same time to achieve the effect of directly displaying the detected data to the operator through the display screen 61, a support base is fixedly installed on the outer side of the shell 4, the control panel 6 is damped and rotated on the support base, and a display screen 61 is provided on the control panel 6.

[0040] In this embodiment, in order to provide shielding and protection for the components in the shell 4 and facilitate the opening and closing operation of the shell 4, a top cover 41 is hingedly installed on the top of the shell 4, and a handle 42 is fixedly installed on the top cover 41.

[0041] In this embodiment, in order to facilitate manual adjustment of the arc plate 2, a handle 25 is fixedly installed on the outer arc surface of the arc plate 2.

[0042] In this embodiment, in order to limit the wall thickness detector 7 and facilitate its quick disassembly and assembly, a limiting bolt is threadedly installed on the mounting sleeve 5, and one end of the limiting bolt abuts against the outer side of the wall thickness detector 7.

[0043] In this embodiment, in order to limit the range of movement of the installation sleeve 5 , a limit ring 501 is fixedly installed on the outer side of the bottom of the installation sleeve 5 , and the size of the limit ring 501 is larger than the size of the installation opening 101 .

[0044] The wall thickness detector 7 is an existing known device, which is used to detect the wall thickness of the pipeline.

[0045] This embodiment also provides a method for using an industrial gas pipeline wall thickness detection device, comprising the following steps:

[0046] S1: Control the two handles 1 25 and pull them in the direction away from each other, so as to control the two arc plates 2 to move to the side away from each other and to be in an open state, and then clamp the two arc plates 2 on the gas pipeline to be tested, and at the same time, under the action of the torsion spring 22, ensure that the multiple guide wheels 1 24 are in a stable contact state with the outer wall of the gas pipeline, and then unfold the two strip plates 3 and make the multiple guide wheels 2 32 contact with the outer wall of the gas pipeline, and judge whether the mounting base 1 is in a vertical state with the gas pipeline by observing the position of the fixing strip 33 pointing to the protractor 34, so as to ensure that the wall thickness detector 7 can keep its probe in a vertical state with the gas pipeline when performing wall thickness detection, and then adjust the control panel 6 to an angle suitable for observation and operation;

[0047] S2: Turn on the power supply and start the driving motor 12. The driving motor 12 controls the two running wheels 11 to rotate, and controls the device to move along the gas pipeline to be inspected with the cooperation of the other two running wheels 11. The operator cleans and applies a proper amount of coupling agent to the required inspection position at the front side of the device in the walking direction, and then controls the device to move to the position to be inspected, and controls the lifting plate 51 through the electric cylinder 54 to drive the installation sleeve 5 to move downward, so that the probe of the wall thickness detector 7 is against the position to be inspected and performs a wall thickness inspection operation on the gas pipeline, and displays the inspection data to the operator through the display screen 61. At the same time, during the inspection process, the operator is not affected to perform pre-processing and coupling agent application operations on other positions to be inspected, thereby greatly improving the inspection efficiency;

[0048] S3: After the detection is completed, the arc plate 2 can be opened through the two handles 25 and removed from the gas pipeline. After removal, the two strip plates 3 are stored in a vertical state. When the wall thickness detector 7 needs to be stored or replaced separately, the top cover 41 is opened through the handle 2 42, and then the limit bolt is rotated to disengage the abutment state with the outer side of the wall thickness detector 7, and then the wall thickness detector 7 is taken out of the installation sleeve 5 and stored separately or replaced with another wall thickness detector 7.

[0049] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

Claims

1. An industrial gas pipeline wall thickness detection device, comprising a mounting seat (1), a support guide assembly, a positioning guide assembly, a housing (4), a travel assembly, a mounting sleeve (5), a wall thickness detector (7) and a support adjustment assembly; The mounting seat (1) is provided with a mounting opening (101) at a central position, the mounting sleeve (5) is slidably mounted in the mounting opening (101), and the wall thickness detector (7) is detachably fixedly mounted in the mounting sleeve (5), the shell (4) is fixedly mounted on the top side of the mounting seat (1), the support adjustment component is arranged on the top side of the mounting seat (1) and is connected to the mounting sleeve (5), and the support adjustment component is located in the shell (4), both sides of the mounting seat (1) are provided with mounting grooves 1 (102), the support guide component is arranged in the two mounting grooves 1 (102), the front and rear sides of the mounting seat (1) are provided with mounting grooves 3 (104) at the lower position, the positioning guide component is arranged in the two mounting grooves 3 (104), the four corners of the bottom side of the mounting seat (1) are provided with mounting grooves 2 (103), the walking component is arranged in the four mounting grooves 2 (103), and a control panel (6) is arranged on the outer side of the shell (4).

2. The industrial gas pipeline wall thickness detection device according to claim 1 is characterized in that: The support guide assembly comprises two arc-shaped plates (2), two support shafts (21), a plurality of support blocks (23), four torsion springs (22) and a plurality of guide wheels (24); the support shafts (21) are fixedly mounted in the two mounting grooves (102); the arc-shaped plates (2) are radially rotatably mounted on the two support shafts (21); the two arc-shaped plates (2) are symmetrically arranged with the mounting seat (1) as the center; a plurality of support blocks (23) are fixedly mounted on the inner arc surfaces of the two arc-shaped plates (2); four guide wheels (24) are rotatably mounted on the plurality of support blocks (23); torsion springs (22) are fixedly mounted on the front and rear sides of the two arc-shaped plates (2) with the support shafts (21) as the center; the torsion springs (22) are fixedly connected to the inner wall of the corresponding mounting groove (102) on the side away from the arc-shaped plates (2).

3. The industrial gas pipeline wall thickness detection device according to claim 1 is characterized in that: The positioning guide assembly comprises two strip plates (3), two rotating pins (31), a plurality of guide wheels (32), a fixed strip (33) and a protractor (34); the inner walls of the two mounting grooves (104) are both provided with a rotating pin (31) for damping rotation; the two rotating pins (31) are both provided with a strip plate (3) for radial fixed installation; the strip plate (3) is provided with a plurality of guide wheels (32) for rotation installation; the two mounting grooves (104) are both provided with a protractor (34) arranged in an annular shape fixedly installed around the rotating pin (31); and the two strip plates (3) are both provided with a fixed strip (33) corresponding to the corresponding protractor (34) fixedly installed on the side away from each other.

4. The industrial gas pipeline wall thickness detection device according to claim 1, characterized in that: The walking assembly comprises four walking wheels (11) and two driving motors (12); the walking wheels (11) are rotatably mounted in the four mounting grooves (103); the mounting seat (1) is provided with two grooves; the driving motors (12) are fixedly mounted in the two grooves; the output shafts of the two driving motors (12) are respectively axially fixedly connected to the corresponding walking wheels (11).

5. The industrial gas pipeline wall thickness detection device according to claim 1, characterized in that: The support adjustment assembly comprises a lifting plate (51), a fixed plate (53), an electric cylinder (54) and a plurality of guide rods (52); the lifting plate (51) is fixedly mounted on the outer side of the mounting sleeve (5); a plurality of guide rods (52) are fixedly mounted on the mounting seat (1); the plurality of guide rods (52) are all slidably connected to the lifting plate (51); a same fixed plate (53) is fixedly mounted on the top ends of the plurality of guide rods (52); an electric cylinder (54) is fixedly mounted on the fixed plate (53); and a working end of the electric cylinder (54) is fixedly mounted on the top side of the lifting plate (51).

6. The industrial gas pipeline wall thickness detection device according to claim 1, characterized in that: A support base is fixedly mounted on the outer side of the housing (4), a control panel (6) is mounted on the support base in a damped rotation manner, and a display screen (61) is provided on the control panel (6).

7. The industrial gas pipeline wall thickness detection device according to claim 2, characterized in that: A top cover (41) is hingedly mounted on the top of the shell (4), a second handle (42) is fixedly mounted on the top cover (41), and a first handle (25) is fixedly mounted on the outer curved surface of the curved plate (2).

8. The industrial gas pipeline wall thickness detection device according to claim 1, characterized in that: A limit bolt is threadedly mounted on the mounting sleeve (5), and one end of the limit bolt abuts against the outer side of the wall thickness detector (7).

9. The industrial gas pipeline wall thickness detection device according to claim 1, characterized in that: A limiting ring (501) is fixedly mounted on the outer side of the bottom of the installation sleeve (5), and the size of the limiting ring (501) is larger than the size of the installation opening (101).

10. A method for using an industrial gas pipeline wall thickness detection device, characterized in that: The following steps are involved: S1: The two arc plates (2) are controlled to move away from each other by two handles (25), so that the two arc plates (2) are in an open state, and then the two arc plates (2) are clamped on the gas pipeline to be inspected. At the same time, under the action of the torsion spring (22), the plurality of guide wheels (24) are ensured to maintain contact with the outer wall of the gas pipeline. Then, the two strip plates (3) are unfolded and the plurality of guide wheels (32) are in contact with the outer wall of the gas pipeline. The position of the fixing strip (33) pointing to the protractor (34) is observed to determine whether the mounting base (1) maintains a vertical state with the gas pipeline, and then the control panel (6) is adjusted to an angle suitable for observation and operation; S2: Turn on the power supply and start the driving motor (12), the driving motor (12) controls the two running wheels (11) to rotate, and controls the device to move along the gas pipeline to be tested with the cooperation of the other two running wheels (11), the operator cleans the required testing position in front of the walking direction and applies a proper amount of coupling agent, then controls the device to move to the position to be tested and controls the lifting plate (51) through the electric cylinder (54) to drive the installation sleeve (5) to move downward, so that the probe of the wall thickness detector (7) is against the position to be tested and performs a wall thickness detection operation on it, and displays the data obtained by the detection to the operator through the display screen (61), and at the same time, during the detection process, it does not affect the operator's pre-processing and coupling agent application operations of other positions to be tested, thereby greatly improving the detection efficiency; S3: After the test is completed, the arc plate (2) is opened by the two handles (25) and removed from the gas pipeline. After removal, the two strip plates (3) are stored in a vertical state. When the wall thickness detector (7) needs to be stored or replaced separately, the top cover (41) is opened by the handle (42), and then the limit bolt is rotated to make it disengage from the abutment state with the outer side of the wall thickness detector (7). Then, the wall thickness detector (7) is taken out of the installation sleeve (5) and stored separately or replaced with another wall thickness detector (7).

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