A non-destructive testing device

Abstract

This invention relates to the field of non-destructive testing (NDT) technology and discloses an NDT device suitable for pipeline NDT. It includes a controller, several NDT structures, and a cleaning component. The NDT structures are communicatively connected to the controller. Several NDT structures are connected end-to-end to form a ring structure. By changing the number of NDT structures, the diameter of the ring structure can be changed to accommodate pipelines of various sizes. The ring structure formed by the NDT structures is fitted around the outer circumference of the pipeline and can slide along the length of the pipeline to achieve NDT of the pipeline's outer circumference. The cleaning component is mounted on the NDT component and faces the outer wall of the pipeline to clean the pipeline's outer circumference, thereby preventing impurities from adhering to the pipeline and affecting the accuracy of defect detection, thus improving the NDT effect.

Description

Technical Field

[0001] This invention relates to the field of non-destructive testing technology, and specifically to a non-destructive testing device. Background Technology

[0002] Non-destructive testing (NDT) equipment is a type of equipment that uses acoustic emission technology for non-destructive testing. It is widely used in industrial fields, especially in construction engineering, aerospace, and automobile manufacturing. By using acoustic emission testing equipment, it is possible to detect micro-cracks, crack propagation, fatigue damage, and other problems inside materials in a timely and accurate manner, thereby enabling timely repair and maintenance and ensuring the safety and reliability of equipment and structures. The emergence of acoustic emission testing equipment has greatly improved the efficiency and accuracy of testing, bringing convenience and safety assurance to industrial production and equipment maintenance.

[0003] Existing acoustic flaw detection equipment is difficult to use for pipes of various diameters, which limits its applicability. Furthermore, impurities may adhere to the outer wall of the pipe, which can easily stick to the flaw detection equipment and affect the detection results. Summary of the Invention

[0004] In view of this, the present invention provides a non-destructive testing device to solve the problems of poor adaptability and poor testing effect of existing non-destructive testing devices.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] This invention provides a non-destructive testing device suitable for pipeline non-destructive testing; it includes: a controller, several testing structures, and a cleaning component; the testing structures are communicatively connected to the controller, and the multiple testing structures can be connected end-to-end to form a ring structure, the ring structure can be fitted onto the outer periphery of the pipeline and can slide along the length direction of the pipeline; the cleaning component is disposed on the testing component and is arranged towards the outer wall of the pipeline, and the cleaning component is adapted to clean the outer periphery of the pipeline.

[0007] It has the following advantages:

[0008] The flaw detection structure is communicatively connected to the controller. Several flaw detection structures are connected end to end to form a ring structure. By changing the number of flaw detection structures, the diameter of the ring structure can be changed to accommodate pipes of various sizes. The ring structure formed by the flaw detection structures is fitted around the outer circumference of the pipe and can slide along the length of the pipe to achieve non-destructive testing of the outer circumference of the pipe. The cleaning component is located on the flaw detection component and faces the outer wall of the pipe to clean the outer circumference of the pipe, thereby preventing impurities from adhering to the pipe and affecting the accuracy of defect detection, thus improving the flaw detection effect.

[0009] According to some embodiments of the present invention, the non-destructive testing equipment further includes a lifting rod, the first end of which is fixedly connected to the outside of any of the aforementioned testing structures, the controller is disposed on the lifting rod, and the second end of the lifting rod is provided with a handle.

[0010] According to some embodiments of the present invention, the flaw detection structure includes: a connecting assembly and a detection element disposed on the connecting assembly, the detection element being communicatively connected to the controller, the detection element being adapted to detect defect parameters of the outer wall of the pipe and feed them back to the controller, and the detection element being located behind the cleaning assembly along the sliding direction of the annular structure.

[0011] According to some embodiments of the present invention, the connecting component is arc-shaped, the annular structure is a closed annular shape, and the flaw detection structure further includes a guide component, which passes through the connecting component and can slide radially along the annular structure.

[0012] According to some embodiments of the present invention, the connecting component includes an arc-shaped support plate. The first end of the arc-shaped support plate is provided with a first insert block and a first slot that are staggered. The second end of the arc-shaped support plate is provided with a second insert block and a second slot that are staggered. The first insert block is correspondingly arranged with the second slot, and the second insert block is correspondingly arranged with the first slot, so that multiple arc-shaped support plates are connected end to end to form the annular structure.

[0013] According to some embodiments of the present invention, along the sliding direction of the annular structure, the front end of the arc-shaped support plate is provided with a limiting strip, and the cleaning component is snapped together with the limiting strip; therefore, the front end of the limiting strip is provided with a pull plate, the pull plate is connected to the limiting strip through a post, one end of the post extends into the limiting strip, the other end of the post is fixedly connected to the pull plate, and a first elastic member is sleeved on the outer periphery of the post, the first end of the first elastic member abuts against the limiting strip, and the second end of the first elastic member abuts against the pull plate.

[0014] According to some embodiments of the present invention, the first insert block is provided with a limiting part, and the second slot is provided with a limiting hole. The limiting part and the limiting hole are correspondingly arranged to be suitable for snap-fit ​​connection.

[0015] According to some embodiments of the present invention, the arc-shaped support plate is provided with a through threaded circular hole, the guide assembly includes an adjusting rod passing through the threaded circular hole, the outer periphery of the adjusting rod is provided with scale lines, the first end of the adjusting rod is provided with a guide ball, the second end of the adjusting rod is provided with an adjusting disc, and the guide ball is arranged facing the side of the pipe.

[0016] According to some embodiments of the present invention, along the sliding direction of the annular structure, the rear end of the arc-shaped support plate is provided with a limiting groove, and receiving cavities are opened on both sides of the limiting groove. A limiting post is slidably provided in each of the receiving cavities. The two limiting posts are arranged opposite to each other and one end extends into the limiting groove. The detection element passes through the limiting groove, and the two limiting posts abut against the detection element to fix the detection element.

[0017] According to some embodiments of the present invention, the cleaning component includes an installation strip, the installation strip having a fixing hole coaxially disposed with the insertion post, the insertion post being adapted to pass through the fixing hole to fix the installation strip within the limiting strip, and the inner side of the installation strip being uniformly provided with fiber bristles. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is an axial view of a non-destructive testing device provided in some embodiments of the present invention;

[0020] Figure 2 This is a structural view of the connection and installation of several flaw detection structures and cleaning components provided in some embodiments of the present invention;

[0021] Figure 3 This is an installation view of a single flaw detection structure and cleaning assembly provided in some embodiments of the present invention;

[0022] Figure 4 Another view of the installation of a single flaw detection structure and cleaning assembly provided in some embodiments of the present invention;

[0023] Figure 5 Exploded views of a single flaw detection structure and cleaning assembly provided in some embodiments of the present invention;

[0024] Figure 6 This is a structural view of the connecting components provided in some embodiments of the present invention;

[0025] Figure 7 This is a perspective view of a structural portion of the flaw detection structure provided in some embodiments of the present invention;

[0026] Figure 8 for Figure 7 A partial schematic diagram of point A;

[0027] Figure 9 for Figure 7 A partial schematic diagram of point B;

[0028] Figure 10 This is a structural view of the detection element provided in some embodiments of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Controller; 2. Flaw detection structure; 21. Connecting assembly; 22. Detection component; 23. Guide assembly; 211. Arc-shaped support plate; 212. Limiting strip; 213. Pull plate; 214. Insert post; 215. First elastic element; 2110. Movable cavity; 2111. First insert block; 2112. First slot; 2113. Second insert block; 2114. Second slot; 2115. Limiting slot; 2116. Threaded round hole; 2117. Limiting part; 2118. Limiting hole; 2119. Receiving cavity; 2120. Limiting post; 2121. Spring; 2122. Push plate; 2123. Crossbar; 2124. Adjusting post; 221. Protective box; 222. Sealing cover; 223. Acoustic flaw detector; 224. Adjusting part; 225. Rotating shaft; 226. Sleeve; 227. Support rod; 228. Magnetic patch; 231. Adjusting rod; 232. Guide ball; 233. Adjusting disc; 3. Cleaning assembly; 31. Mounting strip; 32. Fiber bristles; 311. Fixing hole; 4. Lifting rod; 41. Handle. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] Reference Figure 1 and Figure 2 As shown, the present invention provides a non-destructive testing device suitable for pipeline non-destructive testing; it includes: a controller 1, a plurality of flaw detection structures 2, and a cleaning component 3; the flaw detection structures 2 are communicatively connected to the controller 1, and the plurality of flaw detection structures 2 can be connected end to end to form a ring structure, the ring structure can be fitted around the outer periphery of the pipeline and can slide along the length direction of the pipeline; the cleaning component 3 is disposed on the flaw detection component and is arranged towards the outer wall of the pipeline, and the cleaning component 3 is suitable for cleaning the outer periphery of the pipeline.

[0036] Specifically, the flaw detection structure 2 is communicatively connected to the controller 1. Several flaw detection structures 2 are provided, and multiple flaw detection structures 2 are connected end to end to form a ring structure. By changing the number of flaw detection structures 2, the diameter of the ring structure can be changed to accommodate pipes of various specifications and sizes. The ring structure formed by the flaw detection structures 2 is fitted around the outer circumference of the pipe and can slide along the length of the pipe to achieve non-destructive testing of the outer circumference of the pipe. The cleaning component 3 is provided on the flaw detection component and is set towards the outer wall of the pipe to clean the outer circumference of the pipe, thereby preventing impurities from adhering to the pipe and affecting the accuracy of defect detection, thus improving the flaw detection effect.

[0037] Reference Figure 1 As shown, in some embodiments of the present invention, the non-destructive testing equipment further includes a lifting rod 4, the first end of the lifting rod 4 being fixedly connected to the outside of any of the flaw detection structures 2, a controller 1 being disposed on the lifting rod 4, and a handle 41 being provided at the second end of the lifting rod 4.

[0038] Specifically, the lifting rod 4 is used to pull the sliding of the annular structure, thereby causing the flaw detection structure 2 to slide along the length of the pipeline to improve the convenience of operation. The controller 1 is located on the lifting rod 4, specifically in the middle of the lifting rod 4, to ensure a stable connection between the flaw detection structure 2 and the controller 1. A handle 41 is provided at the second end of the lifting rod 4 to improve the convenience of operation. The lifting rod 4 can be fixedly connected to the outside of any flaw detection structure 2.

[0039] Reference Figure 2 and Figure 3 As shown, in some embodiments of the present invention, the flaw detection structure 2 includes: a connecting component 21 and a detection element 22 disposed on the connecting component 21. The detection element 22 is communicatively connected to the controller 1. The detection element 22 is adapted to detect the defect parameters of the outer wall of the pipe and feed them back to the controller 1. Along the sliding direction of the annular structure, the detection element 22 is located on the rear side of the cleaning component 3.

[0040] Specifically, the flaw detection structure 2 includes a connecting component 21 and a detection element 22. The connecting component 21 is used to connect the two flaw detection structures 2 end to end. The detection element 22 performs non-destructive testing. The detection element 22 is an acoustic non-destructive testing element 22. It emits and receives sound waves and feeds the received sound wave information back to the controller 1. The controller 1 processes and obtains the defect parameters, thereby realizing non-destructive testing. To ensure the accuracy of non-destructive testing, the detection element 22 is located behind the cleaning component 3 along the sliding direction of the annular structure to facilitate testing after cleaning.

[0041] Reference Figure 10 As shown, the inspection component 22 includes a protective box 221, which is fixedly connected to the outer side of the connecting assembly 21. The protective box 221 has an inner cavity, and a rotating shaft 225 is rotatably mounted between the opposite side walls of the inner cavity. A sleeve 226 is fixedly fitted onto the outside of the rotating shaft 225, and a support rod 227 is fixedly mounted in the middle of the sleeve 226. The support rod passes through the connecting assembly 21 and extends to the inner side. An acoustic emission flaw detector 223 is fixedly mounted on one end of the support rod 227 and the sleeve 226 to achieve acoustic flaw detection of the pipeline. One end of the rotating shaft 225 passes through the side wall of the protective box 221 and extends to the outer side of the protective box 221, and is provided with an adjustment part 224. The angle of the acoustic emission flaw detector 223 can be adjusted by rotating the adjustment part 224 to ensure the accuracy of non-destructive testing of the pipeline.

[0042] A sealing cover 222 is provided on one side of the protective box 221. The sealing cover 222 is magnetically fixed to the protective box 221. Specifically, the protective box 221 is provided with a magnetic patch 228, and the side of the sealing cover 222 facing the protective box 221 is a magnetic metal strip. The sealing cover 222 is provided with a pull ring. The sealing cover 222 can be used to seal the inner cavity of the protective box 221, thereby enabling the installation and adjustment of the rotating shaft 225 and improving convenience.

[0043] In some embodiments of the present invention, the connecting component 21 is arc-shaped, the ring structure is a closed ring, and the flaw detection structure 2 further includes a guide component 23, which passes through the connecting component 21 and can slide radially along the ring structure.

[0044] Specifically, the connecting component 21 can be designed as an arc or a square shape depending on the shape of the pipe. When the pipe is a circular structure, the connecting component 21 is designed as an arc, forming a closed ring. This closed ring structure allows for omnidirectional inspection of the pipe's outer wall, avoiding the need to rotate the ring structure and reducing operational difficulty. During the sliding of the ring structure along the length of the pipe, it prevents the ring structure from scraping or impacting the pipe's sidewalls, thus avoiding affecting the inspection quality and preventing damage to the flaw detection structure 2. By providing a guide component 23, which passes through the connecting component 21 and can slide radially along the ring structure, it can adapt to pipes of various sizes, improving applicability.

[0045] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments of the present invention, the connecting component 21 includes an arc-shaped support plate 211. The first end of the arc-shaped support plate 211 is provided with a first insert block 2111 and a first slot 2112 that are staggered. The second end of the arc-shaped support plate 211 is provided with a second insert block 2113 and a second slot 2114 that are staggered. The first insert block 2111 and the second slot 2114 are correspondingly arranged, and the second insert block 2113 and the first slot 2112 are correspondingly arranged, so that multiple arc-shaped support plates 211 are connected end to end to form a ring structure.

[0046] According to some embodiments of the present invention, the first insert 2111 is provided with a limiting part 2117, and the second slot 2114 is provided with a limiting hole 2118. The limiting part 2117 and the limiting hole 2118 are correspondingly arranged to be suitable for snap-fit ​​connection.

[0047] Reference Figure 9As shown, specifically, the first insert 2111 is engaged with the second slot 2114, and the second insert 2113 is engaged with the first slot 2112. The first insert 2111, the second insert 2113, and the arc-shaped support plate 211 are integrally formed. The arc-shaped support plate 211 has a movable cavity 2110. A push plate 2122 is slidably arranged between the inner walls of the movable cavity 2110. The push plate 2122 and the inner wall of the movable cavity 2110 are fixedly connected by several springs 2121. A crossbar 2123 is slidably arranged inside the movable cavity 2110, abutting against the push plate 2122. A sliding through-hole is fixedly arranged on the side of the crossbar 2123 away from the push plate 2122. An adjusting column 2124 passes through the arc-shaped support plate 211. A limiting part 2117 that slides through the first insert block 2111 is also fixedly installed on the crossbar 2123. A second slot 2114 opened at the other end of the arc-shaped support plate 211 has a limiting hole 2118. The limiting hole 2118 and the limiting part 2117 cooperate with each other. When installing the flaw detection component, press the adjusting column 2124 to make the limiting part 2117 retract into the first insert block 2111 until the first insert block 2111 and the second slot 2114 are engaged. Then release the adjusting column 2124 so that the limiting part 2117 and the limiting hole 2118 cooperate with each other to achieve fixed installation.

[0048] The stability and reliability of the structure are improved by positioning and installing the limiting hole 2118 and the limiting part 2117.

[0049] In some embodiments of the present invention, along the sliding direction of the annular structure, the front end of the arc-shaped support plate 211 is provided with a limiting strip 212, and the cleaning component 3 is snapped to the limiting strip 212; therefore, the front end of the limiting strip 212 is provided with a pull plate 213, the pull plate 213 is connected to the limiting strip 212 through a post 214, one end of the post 214 extends into the limiting strip 212, the other end of the post 214 is fixedly connected to the pull plate 213, and a first elastic member 215 is sleeved on the outer periphery of the post 214, the first end of the first elastic member 215 abuts against the limiting strip 212, and the second end of the first elastic member 215 abuts against the pull plate 213.

[0050] Specifically, to ensure the stability of the connection of the cleaning component 3, a limiting strip 212 is set on the arc-shaped support plate 211. To ensure cleaning before flaw detection, the limiting strip 212 is located at the front end of the arc-shaped support plate 211 along the sliding direction of the annular structure. A pull plate 213 is set at the front end of the limiting strip 212. The pull plate 213 is connected to the limiting strip 212 through a pin 214. The pin 214 passes through the limiting strip 212. During the installation of the cleaning component 3, the pull plate 213 is first pulled forward so that the pin 214 is outside the limiting strip 212. After the cleaning component 3 is placed on the limiting strip 212, under the elastic force of the first elastic element 215, the pin 214 passes through the limiting strip 212 to fix the cleaning component 3 inside the limiting strip 212.

[0051] In some embodiments of the present invention, the cleaning component 3 includes an installation strip 31, the installation strip 31 having a fixing hole 311, the fixing hole 311 being coaxially arranged with a post 214, the post 214 being adapted to pass through the fixing hole 311 to fix the installation strip 31 within the limiting strip 212, and the inner side of the installation strip 31 being uniformly provided with fiber bristles 32.

[0052] Specifically, the cleaning component 3 includes a mounting strip 31 with fixing holes 311. The fixing holes 311 are positioned opposite to the insert post 214 and are coaxially aligned with it. The diameter of the fixing holes 311 is greater than or equal to the diameter of the insert post 214, allowing the insert post 214 to pass through and secure the mounting strip 311 within the limiting strip 212. It is understood that the number of insert posts 214 and fixing holes 311 is the same.

[0053] To improve the cleaning effect, the cleaning component 3 is also equipped with a cleaning nozzle, which is used to spray cleaning fluid to improve cleaning efficiency.

[0054] In some embodiments of the present invention, the arc-shaped support plate 211 is provided with a through threaded circular hole 2116, and the guide assembly 23 includes an adjusting rod 231 passing through the threaded circular hole 2116. The outer periphery of the adjusting rod 231 is provided with scale lines, the first end of the adjusting rod 231 is provided with a guide ball 232, the second end of the adjusting rod 231 is provided with an adjusting disc 233, and the guide ball 232 is arranged facing the side of the pipe.

[0055] Specifically, a guide ball 232 is provided at one end of the adjusting rod 231. The guide ball 232 is provided to avoid scratching the pipe. During non-destructive testing, the guide ball 232 is adjusted to be in contact with the pipe by rotating the adjusting plate 233. The guide ball 232 is slidably connected to the pipe, thereby avoiding scratching the pipe. At the same time, it guides the annular structure during its sliding along the length of the pipe, so as to ensure the accuracy of non-destructive testing.

[0056] Reference Figure 8 As shown, in some embodiments of the present invention, along the sliding direction of the annular structure, the rear end of the arc-shaped support plate 211 is provided with a limiting groove 2115, and the two sides of the limiting groove 2115 are provided with receiving cavities 2119. Each receiving cavity 2119 is slidably provided with a limiting post 2120. The two limiting posts 2120 are arranged opposite to each other and one end extends into the limiting groove 2115. The detection element 22 passes through the limiting groove 2115, and the two limiting posts 2120 abut against the detection element 22 to fix the detection element 22.

[0057] Understandably, the limiting slot 2115 is designed to fix the test piece 22, ensuring the stability of the test piece 22 during the sliding process of the flaw detection structure 2, and improving the accuracy of non-destructive testing.

[0058] The steps for performing non-destructive testing on pipelines using the non-destructive testing equipment provided by this invention are as follows:

[0059] Step 1: Based on the diameter of the pipe to be tested, increase or decrease the total number of flaw detection structures 2 to ensure that the inner diameter of the annular structure formed by several flaw detection structures 2 meets the requirements. When it is necessary to increase the inner diameter of the closed annular structure, during the process of adding a new flaw detection structure 2, first separate two adjacent flaw detection structures 2, press the corresponding adjusting column 2124 into the movable cavity 2110, and the limiting part 2117 moves accordingly, disengaging from the limiting hole 2118 in the adjacent flaw detection structure 2. Then, the two adjacent flaw detection structures 2 can be separated. Next, add a new flaw detection structure 2 between these two separated flaw detection structures 2. During the process of adding a new flaw detection structure 2, first press the corresponding adjusting column 2124 into the movable cavity 2110, and the limiting part 2117 moves accordingly into the movable cavity 2110. Then, insert the first insert 2111 into the second slot 2114 on the new flaw detection structure 2, and simultaneously insert the second insert 2113 on the new flaw detection structure 2 into the first slot 2112. Release the adjusting column 2114. When the column 2124 is pressed, under the elastic action of the spring 2121, the limiting part 2117 is inserted into the limiting hole 2118 on the new flaw detection structure 2 to complete the limiting lock until the required number of flaw detection structures 2 are installed. Then, several flaw detection structures 2 are connected end to end to form a new closed ring structure. Similarly, when it is necessary to reduce the inner diameter of the closed ring structure, the number of new flaw detection structures 2 is reduced. In the process, two adjacent flaw detection structures 2 are first separated, and the corresponding adjusting column 2124 is pressed into the movable cavity 2110. The limiting part 2117 moves accordingly and disengages from the limiting hole 2118 in the adjacent flaw detection structure 2. Then, the two adjacent flaw detection structures 2 can be separated. Then, the above operation is continued to remove the excess number of flaw detection structures 2 in sequence. Finally, the remaining several flaw detection structures 2 are connected end to end to form a new closed ring structure and fitted onto the outside of the pipe. The connecting component 21 and the limiting strip 212 are made of elastically deformable material and can produce elastic deformation within a certain range.

[0060] Step 2: Then, screw on each guide component 23 in sequence, observe the scale line during the process, and precisely adjust the position of the guide ball 232 to ensure that the ends of the multiple guide balls 232 that are close to each other are in full contact with the outer wall of the pipe, and make the distance between each connecting component 21 and the outer wall of the pipe equal, that is, ensure that the distance between each acoustic wave emission flaw detector 223 and the outer wall of the pipe is the same.

[0061] Step 3: Next, holding handle 41, pull rod 4 and several flaw detection structures 2 move backward along the outer wall of the pipe simultaneously. The bottom of the pull rod 4 is fixedly connected to one of the protective boxes 221. During the movement, fiber brushes 32 clean the outer wall of the pipe in a timely manner, removing impurities adhering to the pipe. Several guide balls 232 roll backward along the cleaned outer wall of the pipe, ensuring that each acoustic emission flaw detector 223 maintains the same distance from the outer wall of the pipe. Multiple acoustic emission flaw detectors 223 are used to perform all-round flaw detection on the outer wall of the pipe, achieving complete coverage of the outer wall of the pipe. As the flaw detector 223 moves backward along the cleaned outer wall of the pipe, it works in conjunction with the controller 1 to perform acoustic emission flaw detection on the pipe and determine the location of defects on the pipe. The acoustic emission flaw detector 223 and the controller 1 are existing technologies known to those skilled in the art. When the equipment is not needed, first open the sealing cover 222, rotate the rotating shaft 225 to release the two limiting posts 2120 from limiting the support rod 227, rotate the support rod 227 and the acoustic emission flaw detector into the protective box 221, and then use the sealing cover 222 to cover the front end of the protective box 221 to store the acoustic emission flaw detector 223 inside the protective box 221.

[0062] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A non-destructive testing apparatus adapted for use in the non-destructive testing of pipes; characterised in that, The utility model relates to a pipeline external wall cleaning and detecting device, including: A controller (1); A plurality of flaw detection structures (2) are connected with the controller (1), a plurality of the flaw detection structures (2) can be connected end to end to form a ring structure, the ring structure can be sleeved on the outer periphery of the pipeline and can slide along the length direction of the pipeline; A cleaning assembly (3) is arranged on the flaw detection structure (2) and is arranged in the direction of the outer wall of the pipeline, and the cleaning assembly (3) is suitable for cleaning the outer periphery of the pipeline; The flaw detection structure (2) includes: a connecting assembly (21) and a detection piece (22) arranged on the connecting assembly (21), the detection piece (22) is connected with the controller (1), the detection piece (22) is suitable for detecting the defect parameter of the outer wall of the pipeline and feeding back to the controller (1), along the sliding direction of the ring structure, the detection piece (22) is located at the rear side of the cleaning assembly (3); the connecting assembly (21) is arc-shaped, the ring structure is in the form of a closed circular ring, and the flaw detection structure (2) further includes a guide assembly (23), the guide assembly (23) is arranged through the connecting assembly (21) and can slide along the radial direction of the ring structure; The connecting assembly (21) includes an arc-shaped supporting plate (211), a first insertion block (2111) and a first clamping groove (2112) are arranged in a staggered manner at the first end of the arc-shaped supporting plate (211), a second insertion block (2113) and a second clamping groove (2114) are arranged in a staggered manner at the second end of the arc-shaped supporting plate (211), the first insertion block (2111) and the second clamping groove (2114) are arranged correspondingly, and the second insertion block (2113) and the first clamping groove (2112) are arranged correspondingly, so that a plurality of the arc-shaped supporting plates (211) are connected end to end to form the ring structure; Along the sliding direction of the ring structure, a limiting clamping strip (212) is arranged at the front end of the arc-shaped supporting plate (211), the cleaning assembly (3) is buckled with the limiting clamping strip (212), the front end of the limiting clamping strip (212) is provided with a pull plate (213), the pull plate (213) is connected with the limiting clamping strip (212) through an insertion column (214), one end of the insertion column (214) extends into the limiting clamping strip (212), the other end of the insertion column (214) is fixedly connected with the pull plate (213), a first elastic member (215) is sleeved on the outer periphery of the insertion column (214), the first end of the first elastic member (215) abuts against the limiting clamping strip (212), and the second end of the first elastic member (215) abuts against the pull plate (213).

2. The non-destructive testing apparatus of claim 1, wherein It further includes a pull rod (4), the first end of the pull rod (4) is fixedly connected with the outer side of any flaw detection structure (2), the controller (1) is arranged on the pull rod (4), and the second end of the pull rod (4) is provided with a handle (41).

3. The non-destructive testing apparatus of claim 1, wherein The first plug block (2111) is provided with a limiting part (2117), the second clamping slot (2114) is provided with a limiting hole (2118), and the limiting part (2117) and the limiting hole (2118) are correspondingly arranged to be suitable for snap connection.

4. The apparatus of claim 3, wherein, The arc-shaped supporting plate (211) is provided with a through threaded circular hole (2116), the guide assembly (23) comprises an adjusting rod (231) penetrating through the threaded circular hole (2116), the outer periphery of the adjusting rod (231) is provided with a scale line, the first end of the adjusting rod (231) is rotationally provided with a guide ball (232), and the second end of the adjusting rod (231) is provided with an adjusting disc (233).

5. The non-destructive testing apparatus of claim 4, wherein, Along the sliding direction of the annular structure, the rear end of the arc-shaped supporting plate (211) is provided with a limiting slot (2115), limiting cavities (2119) are formed on the two sides of the limiting slot (2115), limiting columns (2120) are slidingly arranged in the limiting cavities (2119), the two limiting columns (2120) are oppositely arranged and one end of each limiting column (2120) extends into the limiting slot (2115), the detection piece (22) penetrates through the limiting slot (2115), and the two limiting columns (2120) abut against the detection piece (22) to fix the detection piece (22).

6. The non-destructive testing apparatus of claim 5, wherein, The cleaning assembly (3) comprises a mounting strip (31), the mounting strip (31) is provided with a fixing hole (311), the fixing hole (311) is coaxially arranged with the plug-in column (214), the plug-in column (214) is suitable for penetrating through the fixing hole (311) to fix the mounting strip (31) in the limiting clamping strip (212), and the inner side of the mounting strip (31) is uniformly provided with fiber bristles (32).

Images