Limiting tool for pipeline corrosion detection

Abstract

The utility model provides a limiting tool for pipeline corrosion detection, which belongs to the technical field of pipeline corrosion detection and comprises a sliding mechanism, two limiting mechanisms are slidably connected onto the sliding mechanism and limit a pipeline body, and each limiting mechanism comprises a first clamping component and a second clamping component. The first clamping assembly comprises two first clamping blocks capable of moving up and down, the first clamping blocks can be in contact with the inner wall of the pipeline body, the second clamping assembly comprises two second clamping blocks capable of moving up and down, and the second clamping blocks can be in contact with the outer wall of the pipeline body. The clamping position of the pipe wall can be automatically switched, the situations that when a detection instrument is tightly attached to the surface of a pipeline for detection, detection blind areas occur, normal detection cannot be achieved, and the pipeline needs to be rotated to switch contact points are avoided, manual operation is not needed, and the detection work efficiency is greatly improved.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of pipeline corrosion detection, specifically a limiting tool for pipeline corrosion detection. Background Technology

[0002] Pipeline corrosion detection utilizes specialized instruments and techniques to inspect both the inner and outer surfaces of a pipeline to determine the presence, location, extent, and type of corrosion. Detection methods include direct visual inspection, ultrasonic testing, radiographic testing, magnetic particle testing, penetrant testing, and corrosion monitoring systems. For example, ultrasonic testing measures the propagation time and reflection of ultrasonic waves within the pipeline material to assess changes in pipe wall thickness, thereby determining whether corrosion thinning has occurred.

[0003] During pipeline corrosion detection, clamping devices are needed to hold the pipeline. These are all contact clamps, and currently, a ring-shaped clamping fixture is commonly used. The clamping block contacts the pipe wall, thus forming a blocking area on the pipeline surface. This prevents the detector probe from directly contacting or aligning with this area, resulting in the corrosion in that area going undetected. This is especially problematic for instruments that need to be in close contact with the pipeline surface, such as the probe of an ultrasonic thickness gauge. If the clamping fixture blocks the probe, it cannot accurately measure the wall thickness of the corresponding area, creating a detection blind spot. The contact position of the clamping device must be changed again to detect the previous blind spot, which is very inconvenient. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing solutions are too simplistic. Specifically, this utility model provides a limiting fixture for pipeline corrosion detection, which solves the technical problem mentioned in the background that currently, the commonly used limiting fixtures with a ring-shaped structure are used to limit the pipeline, resulting in the clamping block contacting the pipe wall, forming an obstruction area, and causing a blind spot in the detection.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A limiting fixture for pipeline corrosion detection includes a sliding mechanism with two limiting mechanisms slidably connected to it. The two limiting mechanisms are symmetrically distributed and limit the pipeline body. Each limiting mechanism includes a first clamping component and a second clamping component. The first clamping component includes two vertically movable first clamping blocks that can contact the inner wall of the pipeline body. The second clamping component includes two vertically movable second clamping blocks. The second clamping blocks on the same side are in the same plane as the first clamping blocks and can contact the outer wall of the pipeline body.

[0007] Furthermore, the first clamping assembly also includes a base, on which a first positive and negative double-threaded screw and a first slide rod are provided. The first positive and negative double-threaded screw and the first slide rod are distributed in parallel. A first nut seat is provided in different thread sections of the first positive and negative double-threaded screw. Two first sliding frames are provided on the first slide rod. The first sliding frame is connected to the corresponding first nut seat. The first sliding frame is connected to the corresponding first clamping block by bolts.

[0008] Furthermore, the second clamping assembly also includes a second positive and negative double threaded screw and a second slide bar. The second positive and negative double threaded screw is provided with a second nut seat in different thread sections. The second slide bar is provided with two second sliding frames. The second sliding frames are connected to the corresponding second nut seats. The second sliding frames are connected to the corresponding second clamping blocks by bolts.

[0009] Furthermore, a top frame is provided on the second positive and negative double threaded screw, the second slide rod, the first positive and negative double threaded screw, and the first slide rod.

[0010] Furthermore, the top frame is equipped with a first motor and a second motor. The output end of the first motor is connected to the upper end of the first positive and negative double threaded screw, and the output end of the second motor is connected to the upper end of the second positive and negative double threaded screw.

[0011] Furthermore, the sliding mechanism includes two parallel slide rails, each slide rail is provided with a slider, and the two sliders on the same side are provided with a sliding plate, which is connected to the bottom of the corresponding limiting mechanism.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model achieves clamping and limiting of both ends of the pipe body through the setting of slide rail, slider, sliding plate, first clamping assembly and second clamping assembly. Furthermore, the base, first positive and negative double threaded screw, first slide rod, first nut seat, first sliding frame, first clamping block, second positive and negative double threaded screw, second slide rod, second nut seat, second sliding frame and second clamping block allow the contact surface between the clamping block and the pipe body to be switched during pipe corrosion detection. When detecting the outside of the pipe wall, the contact surface can be switched to the inside of the pipe wall; when detecting the inside of the pipe wall, the contact surface can be switched to the outside of the pipe wall, avoiding the existence of blind spots in detection. Driven by two motors, the clamping block can be switched automatically without manual operation. The structure is stable and very convenient, greatly improving the efficiency of the detection work and possessing certain practical value.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the overall structure of this utility model;

[0017] Figure 3 This is an exploded view of the limiting mechanism of this utility model.

[0018] In the diagram: 1. Sliding mechanism; 11. Slide rail; 12. Slider; 13. Sliding plate; 2. First clamping assembly; 21. Base; 22. First double-threaded screw; 23. First slide rod; 24. First nut seat; 25. First sliding frame; 26. First clamping block; 3. Second clamping assembly; 31. Second double-threaded screw; 32. Second slide rod; 33. Second nut seat; 34. Second sliding frame; 35. Second clamping block; 4. Pipe body; 5. Top frame; 6. First motor; 7. Second motor. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please refer to the appendix carefully. Figure 1-3A limiting fixture for pipeline corrosion detection includes a sliding mechanism 1, on which two limiting mechanisms are slidably connected. The two limiting mechanisms are symmetrically distributed and limit the pipeline body 4. Each limiting mechanism includes a first clamping component 2 and a second clamping component 3. The first clamping component 2 includes two vertically movable first clamping blocks 26, which can contact the inner wall of the pipeline body 4. The second clamping component 3 includes two vertically movable second clamping blocks 35. The second clamping blocks 35 on the same side and the first clamping blocks 26 are on the same plane, and the second clamping blocks 35 can contact the outer wall of the pipeline body 4.

[0023] The above structure enables the limiting of the pipeline during pipeline corrosion detection. It can automatically switch the clamping position on the pipe wall, avoiding the blind spot that occurs when the detection instrument is in close contact with the pipeline surface, which would prevent normal detection and require rotating the pipeline to switch contact points. The structure is stable, requires no manual operation, is very convenient, greatly improves the efficiency of the detection work, and has certain practical value.

[0024] The specific operation is as follows: First, place the pipe body 4 to be inspected between the two limiting mechanisms. Then, turn on the first motor 6, which drives the first positive and negative double threaded screw 22 to rotate. The two first nut seats 24 drive the corresponding first clamping blocks 26 to move in the opposite direction through the first sliding frame 25 until the two first clamping blocks 26 abut against the upper and lower sides of the inner wall of the pipe body 4 for clamping and limiting. Then, the staff can inspect the outer wall of the pipe body 4 through the inspection equipment. After inspecting the outer wall of the pipe, the second motor 7 drives the second positive and negative double threaded screw 31 to rotate. Then, the second nut seat 33 drives the second clamping block 35 through the second sliding frame 34 to clamp the upper and lower sides of the outer wall of the pipe body 4. Then, the first motor 6 drives the first positive and negative double threaded screw 22 to rotate in the opposite direction. The two first sliding frames 25 drive the corresponding first clamping blocks 26 to move closer to the middle, so that the first clamping blocks 26 separate from the inner wall of the pipe body 4. Then, the inner wall of the pipe body 4 can be inspected. During this process, there is no need to rotate or move the pipe body 4, which is very convenient.

[0025] Please refer to the appendix carefully. Figure 1 and attached Figure 2 The sliding mechanism 1 includes two parallel slide rails 11, each slide rail 11 is provided with a slider 12, and the two sliders 12 on the same side are provided with a sliding plate 13. The sliding plate 13 is connected to the bottom of the corresponding limiting mechanism. Through the cooperation between the slide rails 11 and the sliders 12, the pipe body 4 of different lengths can be clamped.

[0026] Please refer to the appendix carefully. Figure 1 and attached Figure 3The first clamping assembly 2 further includes a base 21, on which a first double-threaded screw 22 and a first slide rod 23 are provided. The first double-threaded screw 22 and the first slide rod 23 are distributed in parallel. A first nut seat 24 is provided in different thread sections of the first double-threaded screw 22. Two first sliding brackets 25 are provided on the first slide rod 23. The first sliding brackets 25 are connected to the corresponding first nut seats 24. The first sliding brackets 25 are bolted to the corresponding first clamping blocks 26. Through the mutual cooperation between the first double-threaded screw 22, the first slide rod 23, the first nut seats 24, and the first sliding brackets 25, the two first clamping blocks 26 can move stably up and down to clamp the inner wall of the pipe. The second clamping assembly 3 further includes a second double-threaded screw 31 and a second slide rod 32. A second nut seat 33 is provided in different thread sections of the second double-threaded screw 31. Two second sliding frames 34 are provided on the second sliding rod 32. The second sliding frame 34 is connected to the corresponding second nut seat 33. The second sliding frame 34 is connected to the corresponding second clamping block 35 by bolts. Through the second positive and negative double threaded screw 31, the second sliding rod 32, the second nut seat 33, the second sliding frame, and the second clamping block 35, the two second clamping blocks 35 can move stably up and down to clamp the outside of the pipe wall. The second positive and negative double threaded screw 31, the second sliding rod 32, the first positive and negative double threaded screw 22, and the first sliding rod 23 are all provided with a top frame 5. The top frame 5 is provided with a first motor 6 and a second motor 7. The output end of the first motor 6 is connected to the upper end of the first positive and negative double threaded screw 22, providing driving force for the rotation of the first positive and negative double threaded screw 22. The output end of the second motor 7 is connected to the upper end of the second positive and negative double threaded screw 31, providing driving force for the rotation of the second positive and negative double threaded screw 31.

[0027] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A limiting tool for pipeline corrosion detection, comprising a sliding mechanism (1), two limiting mechanisms are slidingly connected on the sliding mechanism (1), the two limiting mechanisms are symmetrically distributed, and the limiting mechanisms limit a pipeline body (4), characterized in that, Each of the limiting mechanisms comprises a first clamping assembly (2) and a second clamping assembly (3), the first clamping assembly (2) comprises two first clamping blocks (26) moving up and down, the first clamping blocks (26) can contact the inner wall of the pipeline body (4), the second clamping assembly (3) comprises two second clamping blocks (35) moving up and down, the second clamping blocks (35) and the first clamping blocks (26) on the same side are in the same plane, and the second clamping blocks (35) can contact the outer wall of the pipeline body (4).

2. The position limiting tool for pipeline corrosion detection according to claim 1, wherein, The first clamping assembly (2) further comprises a base (21), the base (21) is provided with a first positive and negative double-thread screw rod (22) and a first sliding rod (23), the first positive and negative double-thread screw rod (22) and the first sliding rod (23) are distributed in parallel, the first positive and negative double-thread screw rod (22) is provided with a first nut seat (24) in different threaded intervals, the first sliding rod (23) is provided with two first sliding frames (25), the first sliding frame (25) is connected with the corresponding first nut seat (24), and the first sliding frame (25) and the corresponding first clamping block (26) are connected by bolts.

3. The stopper tool for detecting corrosion of a pipe according to claim 1, wherein The second clamping assembly (3) further comprises a second positive and negative double-thread screw rod (31) and a second sliding rod (32), the second positive and negative double-thread screw rod (31) is provided with a second nut seat (33) in different threaded intervals, and the second sliding rod (32) is provided with two second sliding frames (34), the second sliding frame (34) is connected with the corresponding second nut seat (33), and the second sliding frame (34) and the corresponding second clamping block (35) are connected by bolts.

4. The limiting tool for pipeline corrosion detection according to claim 3, characterized in that, The second positive and negative double-thread screw rod (31), the second sliding rod (32), the first positive and negative double-thread screw rod (22) and the first sliding rod (23) are jointly provided with a top frame (5).

5. The stopper tool for detecting corrosion of a pipe according to claim 4, wherein The top frame (5) is provided with a first motor (6) and a second motor (7), the output end of the first motor (6) is connected with the upper end of the first positive and negative double-thread screw rod (22), and the output end of the second motor (7) is connected with the upper end of the second positive and negative double-thread screw rod (31).

6. The stopper tool for detecting corrosion of a pipe according to claim 1, wherein The sliding mechanism (1) comprises two sliding rails (11) distributed in parallel, each of the sliding rails (11) is provided with a sliding block (12), and the two sliding blocks (12) on the same side are jointly provided with a sliding plate (13), and the sliding plate (13) is connected with the bottom of the corresponding limiting mechanism.

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