Pipeline chain type detection system

Abstract

The invention discloses a pipeline chain type detection system. The pipeline chain type detection system comprises a probe device and at least one circumferential chain type moving device or / and an axial driving device, the probe device is arranged on the circumferential chain type moving device, and the circumferential chain type moving device is arranged on the peripheral wall surface of the pipeline; or, the probe device is arranged on the axial driving device, and the axial driving device is arranged on the outer wall of the pipeline and is arranged in the axial direction of the pipeline; or, the circumferential chain type moving device is arranged on the peripheral wall surface of the pipeline, the axial driving device is connected to the circumferential chain type moving device, and the probe device is arranged on the axial driving device; the modularized and reconfigurable integrated platform is formed by the circumferential chain type moving device, the axial driving device and the probe device, and the platform can be quickly combined according to different detection requirements (such as circumferential weld joints, longitudinal weld joints and large-range corrosion scanning) and field space limitation, and is high in stability and high in environment adaptability.

Description

Technical Field

[0001] This invention relates to the field of pipeline inspection technology, and in particular to a pipeline chain inspection system. Background Technology

[0002] In industries such as petroleum, chemical, nuclear power, and long-distance pipelines, regular non-destructive testing of in-service pipelines is crucial to ensuring their structural integrity and safe operation. Automated ultrasonic testing technology, due to its high efficiency and accuracy, is gradually replacing traditional manual testing and has become an important method for inspecting circumferential and longitudinal welds in pipelines. To achieve automated testing, a scanning device is needed that can stably adhere to the pipeline surface and accurately perform circumferential (around the pipeline) and axial (along the pipeline length) movements.

[0003] In related technologies, a ring-shaped chain composed of links is wrapped around the outer wall of the pipe, and magnetic wheels or friction wheels provide adsorption and driving force to move the mounted detection probe along the pipe surface. However, existing chain scanners still have many shortcomings in terms of adaptability, stability, and functionality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a pipeline chain detection system.

[0005] The technical solution adopted by this invention to solve its technical problem is: A pipeline chain inspection system, comprising: The probe device, at least one circumferential chain-type moving device and / or an axial drive device; The probe device is mounted on the circumferential chain moving device, which is located on the outer circumferential wall of the pipe to drive the probe device to perform detection in the circumferential direction of the pipe. Alternatively, the probe device is mounted on the axial drive device, which is located on the outer wall of the pipe and arranged along the axial direction of the pipe, so as to drive the probe device to perform detection in the axial direction of the pipe; Alternatively, the circumferential chain moving device is disposed on the outer circumferential wall of the pipe, the axial driving device is connected to the circumferential chain moving device, and the probe device is disposed on the axial driving device. Under the drive of the circumferential chain moving device and the axial driving device, the probe mounted on the probe device performs detection in the circumferential and axial directions of the pipe.

[0006] Furthermore, in the pipeline chain inspection system, the circumferential chain moving device preferably includes a driving mechanism and a chain fixing mechanism connected to the driving mechanism; the driving mechanism and the chain fixing mechanism form a ring structure and are sleeved on the outer peripheral wall of the pipeline, and the driving mechanism and the chain fixing mechanism move on the outer peripheral wall of the pipeline.

[0007] Furthermore, in the aforementioned pipeline chain inspection system, the driving mechanism preferably includes a support frame, a driving component, and at least one moving wheel; The driving component is mounted on the support frame, and at least one movable wheel is mounted on the support frame and connected to the driving component. The at least one movable wheel moves circumferentially along the outer surface of the pipe under the drive of the driving component.

[0008] Furthermore, in the aforementioned pipeline chain inspection system, preferably, at least two movable wheels are provided, with the at least two movable wheels respectively disposed on two opposite sides of the support frame.

[0009] Furthermore, in the aforementioned pipeline chain inspection system, the movable wheel is preferably a magnetic roller; Or / and, the movable wheel is a non-magnetic roller.

[0010] Furthermore, in the aforementioned pipeline chain inspection system, the preferred chain fixing mechanism includes a chain component and a plurality of rollers spaced apart on the chain component; the two ends of the chain component are respectively disposed on the driving mechanism to form a closed ring that wraps around the outer peripheral wall of the pipeline, and the plurality of rollers are respectively attached to the outer peripheral wall of the pipeline.

[0011] Furthermore, in the aforementioned pipeline chain inspection system, the chain component preferably includes a base, several chain links, and several quick-release modules; The base is mounted on the drive mechanism, and the plurality of chain links are connected end to end by the plurality of quick-release modules, with the most end chain link hinged to the base.

[0012] Furthermore, in the pipeline chain inspection system, the chain fixing mechanism preferably includes at least one chain adjustment component for adjusting the gap between adjacent chain links.

[0013] Furthermore, in the pipeline chain detection system, the chain adjustment component preferably includes two connectors respectively connected to adjacent chain links and a push self-locking module for adjusting the two connectors to move closer or further apart.

[0014] Furthermore, in the aforementioned pipeline chain inspection system, the preferred self-locking push module includes a support crossbar, an adjusting support, a screw, two support side arms, and two tension springs. The screw passes through the adjusting bracket and is mounted on the bracket crossbar. One end of each of the two bracket side arms is hinged to both ends of the adjusting bracket, and the other end is hinged to the two connecting pieces. The two tension springs are respectively disposed between the adjusting bracket and the two bracket side arms.

[0015] Furthermore, in the pipeline chain inspection system, the chain fixing mechanism preferably further includes a tension adaptive component; the tension adaptive component includes an elastic element disposed between adjacent chain links.

[0016] Furthermore, the pipeline chain inspection system preferably further includes at least one axial limiting guide ring sleeved on the outer periphery of the pipeline and abutting against the circumferential chain moving device to axially limit the circumferential chain moving device.

[0017] Furthermore, in the pipeline chain inspection system, the probe device preferably includes an elastic holding assembly detachably mounted on the circumferential chain moving device or the axial driving device, and a probe clamping assembly rotatably mounted on the elastic holding assembly. The probe is rotatably mounted on the probe clamping assembly, thus attaching the probe to the pipeline surface.

[0018] Implementing this invention has the following beneficial effects: By forming a modular and reconfigurable integrated platform through a circumferential chain moving device, an axial driving device, and a probe device, it can be quickly assembled according to different detection needs (such as circumferential welds, longitudinal welds, and large-scale corrosion scanning) and on-site space constraints, with high stability and strong environmental adaptability. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a three-dimensional structural diagram of the circumferential chain moving device and axial driving device of the pipeline chain detection system in some embodiments of the present invention, in conjunction with the probe device, in use. Figure 2 yes Figure 1 A three-dimensional structural diagram of the circumferential chain moving device and the axial drive device combined with the probe device is shown. Figure 3 This is a three-dimensional structural diagram of the circumferential chain moving device and probe device of the pipeline chain inspection system in use. Figure 4 yes Figure 3 The diagram shows a three-dimensional structure of the circumferential chain moving device in conjunction with the probe device. Figure 5 This is a three-dimensional structural diagram of the axial drive device and probe device of a pipeline chain inspection system in use. Figure 6 yes Figure 5 A three-dimensional structural diagram of the axial drive device and probe device shown. Figure 7 yes Figure 1A three-dimensional structural schematic diagram of the probe device shown; Figure 8 yes Figure 7 A schematic diagram of the combined three-dimensional structure of the probe clamping assembly and the probe shown; Figure 9 yes Figure 1 A three-dimensional structural schematic diagram of the drive mechanism shown; Figure 10 yes Figure 4 A schematic diagram of the combined three-dimensional structure of the two links and the quick-release module shown; Figure 11 yes Figure 4 A three-dimensional structural diagram of the chain-type adjustment component shown. Figure 12 yes Figure 4 A schematic diagram of the three-dimensional structure of the tension adaptive component shown. Figure 13 yes Figure 1 A three-dimensional structural diagram of the axially limiting guide ring. Detailed Implementation

[0020] To provide a clearer understanding of the technical features, objectives, and effects of this invention, specific embodiments are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or element referred to must have a specific orientation; therefore, they should not be construed as limitations on this invention.

[0021] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0022] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0023] The technical solution adopted by this invention to solve its technical problem is: like Figure 1 and Figure 2 As shown, some embodiments of the present invention disclose a pipeline chain inspection system, which includes a probe device 10, at least one circumferential chain moving device 20 and / or an axial drive device 30. The probe device 10 is mounted on the circumferential chain moving device 20, which is disposed on the outer circumferential wall of the pipeline. The circumferential chain moving device 20 drives the probe device 10 to move circumferentially along the outer circumferential wall of the pipeline, thereby enabling the probe device 10 to perform inspection in the circumferential direction of the pipeline (see reference). Figure 3 and Figure 4 When the inspection task only requires circumferential scanning (such as circumferential weld inspection) or space is limited, the circumferential chain moving device 20 can be used in conjunction with the probe device 10 for inspection.

[0024] Alternatively, the probe device 10 is mounted on the axial drive device 30, which is located on the outer wall of the pipe and positioned along the pipe's axial direction. The axial drive device 30 drives the probe device 10 to move axially along the outer peripheral wall of the pipe, thereby enabling the probe device 10 to perform axial detection along the pipe (please refer to...). Figure 5and Figure 6 This axial drive unit 30 is specifically designed for automated, long-duration scanning of longitudinal weld seams in pipelines. Thanks to its compact motor layout, it can operate smoothly in environments with narrow pipe spacing (dense pipe areas). The axial drive unit 30 employs a flattened design, significantly reducing the system's radial profile and enabling it to perform axial scanning in confined spaces.

[0025] Alternatively, the circumferential chain moving device 20 is disposed on the outer circumferential wall of the pipe, the axial drive device 30 is connected to the circumferential chain moving device 20, and the probe device 10 is disposed on the axial drive device 30. Under the drive of the circumferential chain moving device 20 and the axial drive device 30, the probe 11 mounted on the probe device 10 performs detection in the circumferential and axial directions of the pipe (please refer to...). Figure 1 and Figure 2 Understandably, two circumferential chain moving devices 20 are provided, and the axial drive device 30 is located between the two circumferential chain moving devices 20. This is used to perform high-precision pipe body inspection, automatic circumferential and axial scanning, and full-range scanning; the circumferential movement has no axial slippage, allowing for multiple repeated scans and strong data comparability.

[0026] This pipeline chain inspection system is a highly modular and reconfigurable integrated platform that can be quickly assembled into inspection configurations according to different inspection needs (such as circumferential welds, longitudinal welds, and large-scale corrosion scanning) and site space constraints. It is highly stable and has strong environmental adaptability.

[0027] Continue to refer to Figure 1 The pipeline chain inspection system also includes at least one axial limiting guide ring 40, which abuts against the circumferential chain moving device 20 to limit the axial movement of the circumferential chain moving device 20 and prevent the circumferential chain moving device 20 from shifting axially during circumferential movement.

[0028] like Figure 2 and Figure 7As shown, in some embodiments, the probe device 10 includes a removable elastic holding assembly 12 mounted on a circumferential chain-type moving device 20 or an axial driving device 30, and a probe clamping assembly 13 rotatably mounted on the elastic holding assembly 12. The probe 11 is rotatably mounted on the probe clamping assembly 13, which holds the probe 11 against the pipe surface. Understandably, the elastic holding assembly 12 elastically presses against the probe 11 along a direction perpendicular to the radial direction of the pipe, causing the probe 11 to adhere to the pipe surface. The probe clamping assembly 13 is used to clamp the probe 11, and the probe clamping assembly 13 also rotates relative to the direction perpendicular to the elastic holding assembly 12 as its axis of rotation; while the probe 11 can rotate relative to the direction perpendicular to the axis of rotation of the probe clamping assembly 13 as its axis of rotation. In other words, the elastic holding assembly 12 and the probe clamping assembly 13 allow the probe 11 to have degrees of freedom for up-and-down movement, left-and-right swaying, and back-and-forth swaying, so that the probe 11 can adapt to the irregular shape of the pipe surface (such as welds, pits), always maintaining a coupled state and ensuring the quality of the detection signal.

[0029] Continue to refer to Figure 7 In some embodiments, the elastic holding assembly 12 includes a mounting plate 121, a guide rail 122, a slide rod 123, and a spring 124. The mounting plate 121 is detachably mounted on the circumferential chain moving device 20 or the axial driving device 30. The guide rail 122 is mounted on the mounting plate 121. The slide rod 123 is slidably mounted on the guide rail 122. The spring 124 is installed between the guide rail 122 and the slide rod 123, using an elastic force to press the slide rod 123 towards the pipe, so that the probe 11 fits against the pipe surface.

[0030] In some embodiments, mounting plate 121 may include a vertical body and an inclined portion inclinedly disposed on the vertical body, the inclined portion extending toward the vertical diameter line of the pipe, so that probe 11 is perpendicular to the vertical diameter line of the pipe. Alternatively, the lower surface of probe 11 is parallel to the axis so that probe 11 is coupled to the surface of the pipe.

[0031] For reference Figure 8 In some embodiments, the probe clamping assembly 13 may include a clamping arm mounting plate 131, two clamping arms 132, and a fixing member 133. The clamping arm mounting plate 131 is rotatably mounted on a slide rod 123 via a pivot, and the clamping arm mounting plate 131 can rotate about an axis perpendicular to the slide rod 123. The two clamping arms 132 are respectively clamped on both sides of the clamping arm mounting plate 131 and fixed to the clamping arm mounting plate 131 by the fixing member 133; the distance between the two clamping arms 132 is adjustable to clamp probes 11 of different models. The probe 11 is rotatably mounted between the two clamping arms 132 via a pivot.

[0032] Continue to refer to Figure 2In some embodiments, the circumferential chain moving device 20 includes a driving mechanism 21 and a chain fixing mechanism 22. The chain fixing mechanism 22 is connected to the driving mechanism 21, and the driving mechanism 21 and the chain fixing mechanism 22 together form a ring structure and are sleeved on the outer peripheral wall of the pipe. The driving mechanism 21 and the chain fixing mechanism 22 move circumferentially on the outer peripheral wall of the pipe.

[0033] like Figure 9 As shown, in some embodiments, the drive mechanism 21 includes a support frame 211, a drive element 212, and at least one movable wheel 213. The drive element 212 is a motor mounted on the support frame 211, and the movable wheel 213 is connected to the output shaft of the drive element 212 via a reducer. Understandably, the drive element 212 drives the movable wheel 213 to rotate, thereby moving circumferentially along the outer peripheral wall of the pipe.

[0034] It should be noted that when the circumferential chain moving device 20 and the axial drive device 30 work together with the probe device 10 to perform circumferential inspection on the pipeline, since there are two circumferential chain moving devices 20, only one moving wheel 213 can be set on one drive mechanism 21. The moving wheels 213 on the two support frames 211 are arranged opposite each other to maintain stability.

[0035] Alternatively, when using only the circumferential chain moving device 20 in conjunction with the probe device 10 to perform circumferential inspection of the pipeline, a single moving wheel 213 can also be installed. This single moving wheel 213 can be positioned in the middle of the support frame 211, and to maintain the stability of the support frame 211, the width of the moving wheel 213 must be determined according to the width of the support frame 211. In other words, when installing a single moving wheel 213, the width of the moving wheel 213 must have a certain thickness.

[0036] It is acceptable that when using only the circumferential chain moving device 20 in conjunction with the probe device 10 to perform circumferential inspection of the pipeline, at least two moving wheels 213 should be provided, with at least two moving wheels 213 respectively located on two opposite sides of the support frame 211. Understandably, two moving wheels 213 can maintain the stability of the support frame 211, therefore, any number, such as two or four, can be selected.

[0037] In some embodiments, the movable wheel 213 is a magnetic roller or a non-magnetic roller. When inspecting pipes with magnetic properties, a magnetic roller can be used so that the movable wheel 213 is magnetically adsorbed onto the outer wall of the pipe, such as for composite material pipes or stainless steel pipes; a non-magnetic roller can be used in cases where a magnetic wheel is not required.

[0038] Understandably, in some embodiments, a magnetic roller includes a wheel body, two magnets disposed within the wheel body, and aluminum spacers on both sides of the wheel body. The two magnets are installed with opposite magnetic poles attracting each other (the poles are arranged as N, S, N, S or S, N, S, N). This arrangement allows magnetic lines of force to originate from the magnets, pass over the workpiece to be inspected, and then re-enter the magnets, maximizing the magnetic force. Furthermore, the aluminum spacers effectively protect the magnets from damage.

[0039] Refer again Figure 4 In some embodiments, the chain-type fixing mechanism 22 may include a chain assembly 221 and a plurality of rollers 223. The two ends of the chain assembly 221 are respectively mounted on the drive mechanism 21 to form a closed loop that wraps around the outer peripheral wall of the pipe. The plurality of rollers 223 are spaced apart on the chain assembly 221 and are respectively attached to the outer peripheral wall of the pipe. It is understood that the rollers 223 are provided so that the chain assembly 221 moves with the drive mechanism 21 on the outer peripheral wall of the pipe. The rollers 223 may be magnetic or non-magnetic depending on the operating conditions; the principle is the same as described above and will not be described in detail here.

[0040] For reference Figure 10 In some embodiments, the chain assembly 221 includes a base 2211, several chain links 2212, and several quick-release modules 2213. Two bases 2211 are provided, each located on one side of the drive mechanism 21 (support frame 211). The chain links 2212 are sequentially hinged end-to-end via several quick-release modules 2213, with the outermost chain link 2212 hinged to the base 2211. Rollers 223 are rotatably mounted on the quick-release modules 2213. The quick-release modules 2213 are used for quick disassembly and connection between adjacent chain links 2212. When the pipe type changes, only the number of chain links 2212 needs to be increased, making it suitable for different pipe types.

[0041] It should be noted that quick-release module 2213 is a quick-release pin (please refer to...). Figure 10 The quick-release pin includes a pin, a button, a ball bearing, and a connecting drive component. The pin passes through link 2212, the button is located at one end of the pin, and the ball bearing is located at the other end. The button and the ball bearing are connected by the connecting drive component. The ball bearing protrudes outward from the pin to limit the movement of link 2212. When disassembly or assembly is required, pressing the button drives the ball bearing to retract into the pin, allowing it to be inserted into or removed from link 2212, thus enabling disassembly and assembly of links 2212. The quick-release pin is an existing product and will not be described in detail here.

[0042] Quick-release module 2213 can also be used for shoulder screws (please refer to...) Figure 4The shoulder screw is inserted into the chain link 2212 and the end is locked with a wing nut.

[0043] The quick-release module 2213 can also be a knob plunger, which passes through the beginning of the chain link 2212 and is screwed into the end of the adjacent chain link 2212.

[0044] Refer again Figure 4 The chain fixing mechanism 22 also includes at least one chain adjustment component 224 for adjusting the gap between adjacent chain links 2212. Understandably, when reducing or increasing the chain links 2212 fails to allow the chain fixing mechanism 22 to fit against the outer wall of the pipe, the length of the chain fixing mechanism 22 can be adjusted by adjusting the chain adjustment component 224 to increase or decrease the length of the chain fixing mechanism 22.

[0045] For reference Figure 1 In some embodiments, the chain adjustment assembly 224 may include two connectors 2241 and a push-locking module 2242. The two connectors 2241 are respectively connected to adjacent chain links 2212, and the push-locking module 22442 is disposed between the two connectors 2241 for pulling the two connectors 2241 closer together or further apart; after adjustment, pushing the push-locking module 2242 can achieve self-locking and prevent loosening.

[0046] Refer again Figure 11 In some embodiments, the self-locking module 2242 includes a support crossbar 22421, an adjusting bracket 22422, a screw 22423, two support side arms 22424, and two tension springs 22425. The support crossbar 22421 is arranged parallel to the adjusting bracket 22422. The screw 22423 passes through the adjusting bracket 22422 and is mounted on the support crossbar 22421. One end of each of the two support side arms 22424 is hinged to both ends of the adjusting bracket 22422, and the other end is hinged to two connecting members 2241. The two tension springs 22425 are respectively disposed between the adjusting bracket 22422 and the two support side arms 22424.

[0047] Specifically, turning the screw 22423 drives the adjusting bracket 22422 to move away from or towards the bracket crossbar 22421. The adjusting bracket 22422 pulls the two connecting pieces 2241 to move through the two bracket side arms 22424, so that the two chain links 2212 connected to the two connecting pieces 2241 move closer or further apart.

[0048] It should be noted that rollers 223 are also provided on the self-locking module 2242, on the support crossbar 22421, and at the hinge joints of the two support side arms 22424 and the two connecting pieces 2241, rollers 223 are also provided respectively.

[0049] For reference Figure 12 In some embodiments, the chain fixing mechanism 22 further includes a tension adaptive component 225. The tension adaptive component 225 includes an elastic element 2251 and two connecting elements 2252. The two connecting elements 2252 are respectively connected between adjacent chain links 2212, or respectively connected between chain links 2212 and connecting elements 2241. The elastic element 2251 is connected between the two connecting elements 2252. Understandably, when the drive mechanism 21 and the chain fixing mechanism 22 move on the outer peripheral wall of the pipe, the elastic element 2251 allows the chain fixing mechanism 22 to extend and retract within a certain range. For deformable pipes, this ensures that circumferential movement will not be hindered, and also ensures that the chain fixing mechanism 22 is uniformly stretched and contracted to fit against the outer peripheral wall of the pipe.

[0050] Refer again Figure 1 The axial drive device 30 can take various forms in some implementations, such as a lead screw module, a synchronous belt module, or a linear motor. No limitation is made to the axial drive device 30 here.

[0051] like Figure 13 As shown, in some embodiments, the axial limiting guide ring 40 may include at least two guide semi-rings combined into a ring structure to be fitted onto the outer circumferential wall of the pipe. Understandably, the axial limiting guide ring 40 abuts against one side of the moving wheel 213 to limit the moving wheel 213, allowing it to move circumferentially along the side wall of the axial limiting guide ring 40 within the pipe, preventing it from tilting axially. In other embodiments, the number of guide semi-rings may not be specified; any number and combination in a ring shape can be used. Furthermore, the axial limiting guide ring 40 may be made of an elastic material to allow it to fit onto pipes of different outer diameters.

[0052] It should be noted that when using only the circumferential chain moving device 20 in conjunction with the probe device 10 for detection, two axial limiting guide rings 40 are provided, and the two axial limiting guide rings 40 are respectively located on two opposite sides of the drive mechanism 21 (please refer to...). Figure 3 ).

[0053] When using the circumferential chain moving device 20 and the axial drive device 30 in conjunction with the probe device 10 for detection, two axial limiting guide rings 40 are provided, and the two axial limiting guide rings 40 are respectively located on opposite sides of the two drive mechanisms 21 (please refer to...). Figure 1 ).

[0054] The following section will further explain the pipeline chain inspection system in conjunction with its usage.

[0055] The usage method of this pipeline chain inspection system is as follows: Figure 3 and Figure 4As shown, the probe device 10 is mounted on the circumferential chain moving device 20. The drive mechanism 21 is provided with two opposing moving wheels 213 and two axial limiting guide rings 40, which abut against the outer sides of the two moving wheels 213 respectively, so that the probe 11 can perform circumferential detection on the pipeline.

[0056] like Figure 5 and Figure 6 As shown, the probe device 10 is mounted on the axial drive device 30, which is mounted on the outer wall of the pipe and arranged along the axial direction of the pipe, so that the probe 11 can perform axial detection on the pipe.

[0057] like Figure 1 and Figure 2 As shown, two circumferential chain moving devices 20 are provided and spaced apart on the outer circumferential wall of the pipe; an axial drive device 30 is provided between the two circumferential chain moving devices 20, and a probe device 10 is mounted on the axial drive device 30. The circumferential chain moving devices 20 drive the probe device 10 to move circumferentially in the pipe through the axial drive device 30, and the axial drive device 30 drives the probe device 10 to move axially in the pipe, so that the probe 11 can perform circumferential and axial detection on the pipe.

[0058] The following section will further explain the pipeline chain inspection system in conjunction with its usage.

[0059] In actual scanning processes, especially during circumferential scanning, the related technologies are prone to axial slippage (i.e., "creeping") due to the eccentricity of the driving force and the potential elastic deformation of the chain itself. This causes the axial position of the probe to shift after one or more rotations, severely affecting the accuracy of the detection path and the repeatability of the detection results, failing to meet the requirements of high-precision quantitative detection. Although related technologies attempt to limit axial movement by adding a guide device with a limited angle, this device also limits the scanner's range of motion, preventing it from achieving continuous 360° circumferential scanning, significantly reducing its practicality.

[0060] The pipeline chain inspection system can fundamentally improve accuracy and reliability by adding an axial limiting guide ring 40: through the synergistic effect of the symmetrical circumferential chain moving device 20 and the axial limiting guide ring 40, the axial sliding problem of circumferential scanning is completely solved, and the repeatability accuracy of the inspection path reaches the millimeter level, which provides a guarantee for the accurate location and quantification of defects.

[0061] To accommodate pipes of varying diameters, ultrasonic pipe inspection devices must possess pipe diameter adjustment capabilities. Two main technologies employ this approach: one involves increasing or decreasing the number of chain links. While suitable for large-diameter pipes, this method requires manual loading and unloading of chain links, resulting in cumbersome and inefficient operation, and hindering rapid, continuous fine-tuning. The locking force relies on the overall chain tension, often lacking an efficient, self-locking tensioning mechanism, potentially leading to chain loosening on the pipe surface. Another technology utilizes a sliding adjustment mechanism. This mechanism adapts to the pipe diameter through the relative sliding of an arc-shaped sleeve and a sliding core, and locks via a friction-pressurized handle. This method presents significant reliability risks; insufficient locking force can easily lead to loosening, and manual pre-tensioning is required before locking, making operation inconvenient. More importantly, the friction locking method struggles to guarantee consistent locking force each time, affecting the uniformity of the scanner's movement stability on pipes of different diameters.

[0062] The chain-type pipeline ultrasonic testing system, through the cooperation of chain link 2212 and quick-release pin, and the chain adjustment component 224, ensures the safety and convenience of locking operation. The chain adjustment component 224 achieves automatic and uniform tensioning without the need for pre-tensioning of the chain fixing mechanism 22, and has absolute anti-loosening capability, which greatly improves the operating efficiency and the safety of equipment operation.

[0063] Ultrasonic pipeline inspection devices should be multifunctional, capable of both circumferential scanning (for circumferential weld inspection) and axial scanning (for longitudinal weld inspection). However, some ultrasonic pipeline inspection devices only perform circumferential scanning and lack axial movement capabilities, making them unsuitable for longitudinal weld inspection. While some devices possess axial movement capabilities, their drive motors and other structures are often excessively bulky and tall, resulting in a large radial space requirement. This limits their application in environments with narrow pipe spacing or where radial space is restricted, such as those with insulation layers.

[0064] This chain-type ultrasonic pipeline inspection system represents a breakthrough in environmental adaptability and functionality. Its modular reconfiguration design allows a single system to meet three mainstream inspection needs, significantly improving equipment utilization. Combined with the flattened axial drive device 30 and the tension adaptive component 225, the system can adapt to changes in pipeline morphology and penetrate harsh environments with limited radial space, making it applicable to a wide range of situations.

[0065] For pipes with ellipticity or uneven surfaces, the probe clamping mechanism needs to have a certain degree of floating capability to ensure stable coupling between the probe and the pipe wall. Related technologies have not paid enough attention to this, lacking effective multi-degree-of-freedom floating designs. This can easily lead to probe tilting or poor coupling at irregular pipe locations, resulting in missed detections. Furthermore, single-chain structures and their drive layouts are more sensitive to the unevenness of the pipe surface, easily causing jamming and slippage.

[0066] The probe of this chain-type pipeline ultrasonic testing system can adaptively fit onto the surface of irregular pipelines, with good coupling, avoiding jamming and slippage.

[0067] It should be noted that those skilled in the art can freely combine the above-mentioned technical features without departing from the concept of the present invention, and can also make several modifications and improvements, all of which fall within the protection scope of the present invention.

Claims

1. A pipeline chain inspection system, characterized in that, include: The probe device (10), at least one circumferential chain moving device (20) and / or axial drive device (30). The probe device (10) is mounted on the circumferential chain moving device (20), which is mounted on the outer circumferential wall of the pipe to drive the probe device (10) to perform detection in the circumferential direction of the pipe. Alternatively, the probe device (10) is mounted on the axial drive device (30), which is located on the outer wall of the pipe and along the axial direction of the pipe, to drive the probe device (10) to perform detection in the axial direction of the pipe. Alternatively, the circumferential chain moving device (20) is disposed on the outer circumferential wall of the pipe, the axial driving device (30) is connected to the circumferential chain moving device (20), and the probe device (10) is disposed on the axial driving device (30). Under the drive of the circumferential chain moving device (20) and the axial driving device (30), the probe (11) mounted on the probe device (10) performs detection in the circumferential and axial directions of the pipe.

2. The pipeline chain inspection system according to claim 1, characterized in that, The circumferential chain moving device (20) includes a driving mechanism (21) and a chain fixing mechanism (22) connected to the driving mechanism (21); the driving mechanism (21) and the chain fixing mechanism (22) form an annular structure and are sleeved on the outer peripheral wall of the pipe, and the driving mechanism (21) and the chain fixing mechanism (22) move on the outer peripheral wall of the pipe.

3. The pipeline chain inspection system according to claim 2, characterized in that, The drive mechanism (21) includes a support frame (211), a drive component (212), and at least one moving wheel (213). The driving component (212) is disposed on the support frame (211), and at least one movable wheel (213) is disposed on the support frame (211) and connected to the driving component (212). The at least one movable wheel (213) moves circumferentially along the outer surface of the pipe under the drive of the driving component (212).

4. The pipeline chain inspection system according to claim 3, characterized in that, At least two movable wheels (213) are provided, and the at least two movable wheels (213) are respectively provided on two opposite sides of the support frame (211).

5. The pipeline chain inspection system according to claim 3, characterized in that, The movable wheel (213) is a magnetic roller; Or / and, the movable wheel (213) is a non-magnetic roller.

6. The pipeline chain inspection system according to claim 2, characterized in that, The chain fixing mechanism (22) includes a chain assembly (221) and a plurality of rollers (223) spaced apart on the chain assembly (221); the two ends of the chain assembly (221) are respectively disposed on the driving mechanism (21) to form a closed ring wrapped around the outer peripheral wall of the pipe, and the plurality of rollers (223) are respectively attached to the outer peripheral wall of the pipe.

7. The pipeline chain inspection system according to claim 6, characterized in that, The chain assembly (221) includes a base (2211), several chain links (2212), and several quick-release modules (2213); The base (2211) is disposed on the drive mechanism (21), and the plurality of chain links (2212) are connected end to end in sequence by the plurality of quick-release modules (2213), and the chain link (2212) at the end end is hinged to the base (2211).

8. The pipeline chain inspection system according to claim 7, characterized in that, The chain fixing mechanism (22) further includes at least one chain adjustment component (224) for adjusting the gap between adjacent chain links (2212).

9. The pipeline chain inspection system according to claim 7, characterized in that, The chain adjustment assembly (224) includes two connectors (2241) respectively connected to adjacent chain links (2212) and a push self-locking module (2242) for adjusting the two connectors (2241) to move closer or further apart from each other.

10. The pipeline chain inspection system according to claim 9, characterized in that, The self-locking push module (2242) includes a support crossbar (22421), an adjusting support (22422), a screw (22423), two support side arms (22424), and two tension springs (22425). The screw (22423) passes through the adjusting bracket (22422) and is mounted on the bracket crossbar (22421). One end of each of the two bracket side arms (22424) is hinged to both ends of the adjusting bracket (22422), and the other end is hinged to the two connecting pieces (2241). The two tension springs (22425) are respectively located between the adjusting bracket (22422) and the two bracket side arms (22424).

11. The pipeline chain inspection system according to claim 7, characterized in that, The chain fixing mechanism (22) further includes a tension adaptive component (225); the tension adaptive component (225) includes an elastic element (2251) disposed between adjacent chain links (2212).

12. The pipeline chain inspection system according to claim 1, characterized in that, It also includes at least one axial limiting guide ring (40) sleeved on the outer periphery of the pipe and abutting against the circumferential chain moving device (20) to axially limit the circumferential chain moving device (20).

13. The pipeline chain inspection system according to claim 1, characterized in that, The probe device (10) includes an elastic holding assembly (12) detachably mounted on the circumferential chain moving device (20) or the axial driving device (30) and a probe clamping assembly (13) rotatably mounted on the elastic holding assembly (12). The probe (11) is rotatably mounted on the probe clamping assembly (13) to attach the probe (11) to the surface of the pipe.

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