Synchronous self-protection electromagnetic ultrasonic pipeline interior detection device

Abstract

The invention relates to a synchronous self-protection electromagnetic ultrasonic detection device for detecting the interior of a pipeline. The invention aims to provide the synchronous self-protection electromagnetic ultrasonic pipeline internal detection device which is simple and convenient to operate, high in adaptability, high in detection precision, high in passing ability, safe and long in service life. The invention discloses a synchronous self-protection electromagnetic ultrasonic pipeline interior detection device which comprises a bin body. The detection assembly comprises a detection probe; the supporting assembly comprises a first supporting arm and a second supporting arm, and one end of the first supporting arm and one end of the second supporting arm are fixedly arranged on the two opposite sides of the detection probe respectively; the moving assembly comprises a first moving crank arm and a second moving crank arm, moving wheels are arranged at one ends of the first moving crank arm and the second moving crank arm, the first moving crank arm and the second moving crank arm are rotationally arranged at the two opposite ends of the bin body respectively and arranged in the extending direction of the bin body, and the other end of the first supporting arm is rotationally connected with the other end of the first moving crank arm; the other end of the second supporting arm is rotationally connected with the other end of the second movable crank arm.

Description

Technical Field

[0001] The present invention relates to an electromagnetic ultrasonic detection device, in particular to a synchronous self-protection electromagnetic ultrasonic detection device for detecting the interior of a pipeline. Background Art

[0002] Electromagnetic ultrasonic testing (EMAT) technology has the advantages of non-contact detection, wide detection coverage, and multi-technology driven. It is widely used in metal structure defect detection and health monitoring in the fields of petroleum, petrochemical, aerospace, etc.

[0003] Electromagnetic ultrasonic technology can be applied to the safety inspection of oil and gas pipelines. It can detect submillimeter defects such as girth weld crack defects, stress corrosion defects and initial defects. It can avoid the application pain points of traditional magnetic leakage detection, such as single detection target (only a certain type of pipeline with a fixed diameter can be inspected) and large driving force requirements. However, due to the constraints of permanent magnets or electromagnets in the detection system, the detection probe body has adsorption force. Therefore, the detection process is very likely to cause rigid collisions with weld nodules, deformation defects and elbows, causing damage to the probe, which not only affects the accuracy of the detection, but also shortens the life of the detection device. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a synchronous self-protection electromagnetic ultrasonic pipeline detection device with simple operation, strong adaptability, high detection accuracy, strong passability, safety and long service life.

[0005] The present invention provides a synchronous self-protection electromagnetic ultrasonic pipeline detection device, including a warehouse body; a detection component, the detection component includes a detection probe; a support component, the support component includes a first support arm and a second support arm, one end of the first support arm and the second support arm are respectively fixedly arranged on opposite sides of the detection probe; a moving component, the moving component includes a first moving curved arm and a second moving curved arm, both of which are provided with moving wheels at one end, the first moving curved arm and the second moving curved arm are respectively rotatably arranged at opposite ends of the warehouse body and arranged along the extension direction of the warehouse body, the other end of the first support arm is rotatably connected to the other end of the first moving curved arm, and the other end of the second support arm is rotatably connected to the other end of the second moving curved arm, and the first moving curved arm and the second moving curved arm can drive the detection probe to move synchronously with themselves along the radial direction of the pipeline.

[0006] The present invention provides a synchronous self-protection electromagnetic ultrasonic pipeline detection device, wherein the support assembly also includes a first connecting rod and a second connecting rod, and the warehouse body is provided with a first fixing ring and a second fixing ring. One end of the first connecting rod is rotatably connected to the first support arm, and the other end of the first connecting rod is rotatably connected to the first fixing ring. One end of the second connecting rod is rotatably connected to the second support arm, and the other end of the second connecting rod is rotatably connected to the second fixing ring.

[0007] The present invention provides a synchronous self-protection electromagnetic ultrasonic pipeline in-pipeline detection device, wherein the support assembly further comprises a support tension spring, one end of the support tension spring is connected to the first support arm, and the other end of the support tension spring is connected to the second support arm.

[0008] The present invention provides a synchronous self-protection electromagnetic ultrasonic pipeline detection device, wherein a support flange is provided on the warehouse body, and the support flange includes a first flange plate, a second flange plate, a third flange plate and a fourth flange plate. The second flange plate and the third flange plate are respectively arranged at opposite ends of the warehouse body, the first flange plate and the second flange plate are connected to each other through a fixed rod and are arranged at intervals, the third flange plate and the fourth flange plate are connected to each other through a fixed rod and are arranged at intervals, and the first movable crank arm and the second movable crank arm are rotatably connected to the first flange plate and the fourth flange plate respectively.

[0009] The present invention provides a synchronous self-protection electromagnetic ultrasonic pipeline detection device, wherein the movable assembly further includes a first support seat and a fourth support seat respectively arranged on the inner walls of the first flange and the fourth flange, a second support seat and a third support seat respectively arranged on the inner walls of the second flange and the fourth flange, a first rotation adjustment rod, a second rotation adjustment rod, a first elastic link and a second elastic link, the first movable curved arm and the second movable curved arm are rotatably connected to the first support seat and the fourth support seat respectively. One end of the first elastic link is rotatably connected to the end of the first movable curved arm away from the movable wheel, the other end of the first elastic link is rotatably connected to the end of the first support arm away from the detection probe and one end of the first rotation adjustment rod, the other end of the first rotation adjustment rod is rotatably connected to the second support seat, one end of the second elastic link is rotatably connected to the end of the second movable curved arm away from the movable wheel, the other end of the second elastic link is rotatably connected to the end of the second support arm away from the detection probe and one end of the second rotation adjustment rod, and the other end of the second rotation adjustment rod is rotatably connected to the third support seat.

[0010] The present invention provides a synchronous self-protection electromagnetic ultrasonic pipeline detection device, wherein the detection probes are provided in plurality, the support components and the movable components are provided in multiple groups, the warehouse body is cylindrical, and the multiple detection probes correspond one-to-one to the multiple groups of support components and movable components and are evenly arranged along the circumference of the warehouse body.

[0011] The present invention provides a synchronous self-protection electromagnetic ultrasonic pipeline detection device, wherein the detection component also includes a probe shell corresponding to the detection probe, the detection probe is arranged in the probe shell, and the first support arm and the second support arm are respectively fixedly arranged on opposite sides of the probe shell.

[0012] The present invention provides a synchronous self-protection electromagnetic ultrasonic pipeline detection device, wherein the detection component also includes a battery pack and a storage module arranged in a warehouse body, the warehouse body is provided with a plurality of wiring holes along the circumference, the battery pack and the storage module are electrically connected through wires, and the storage module is connected to the detection probe through an excitation cable and a collection cable respectively.

[0013] The present invention provides a synchronous self-protection electromagnetic ultrasonic pipeline detection device, wherein the warehouse body is also provided with an anti-collision mechanism, the anti-collision mechanism includes a fixed plate and an anti-collision frame, one end of the anti-collision frame is arranged on one surface of the fixed plate, and the other surface of the fixed plate is arranged on the outer wall of the first flange plate or the fourth flange plate.

[0014] The present invention provides a synchronous self-protection electromagnetic ultrasonic pipeline in-pipeline detection device, wherein the anti-collision frame is provided with a universal joint for power connection.

[0015] This invention differs from existing technologies in that it utilizes a flange mounted on the silo body, which cooperates with two support bases to support and secure the movable crank arm. A fixed ring is mounted on the silo body, cooperating with a connecting rod to support the support arm. The movable crank arm and the support arm are then securely connected via a supporting tension spring, an elastic connecting rod, a support base, and a rotating adjustment lever, forming a detection structure in which the detection probe and the movable crank arm move synchronously. During testing, the detection device is driven by pneumatic or traction power, and multiple detection probes, in conjunction with the storage module, enable high-precision electromagnetic ultrasonic testing of the pipeline.

[0016] The synchronous self-protection electromagnetic ultrasonic pipeline detection device of the present invention has at least the following beneficial effects:

[0017] (1) The detection structure in which the detection probe and the movable curved arm move synchronously can avoid collision or friction between the detection probe and the inner wall of the pipe, effectively protect the detection probe and extend its service life; ensure that the detection probe always maintains a certain distance from the inner wall of the pipe, thereby ensuring the accuracy of the detection, and the height difference can be set according to requirements; the two movable curved arms of the detection device can extend outward or retract inward on the chamber body, and can be applied to pipes of different diameters, overcoming the limitation that existing detection equipment can only be applied to pipes of fixed diameters.

[0018] (2) Two supporting structures are formed by setting flanges on the left and right sides of the warehouse body, which effectively solves the problem of space shortage caused by the linkage between the movable crank arm and the support arm.

[0019] (3) The setting of the support seat, support tension spring and elastic connecting rod enhances the linkage between the movable crank arm and the support arm, shortens the response time of the linkage between the two, and reduces the ineffective stroke of the linkage; and increases the range of motion of the movable crank arm and the linkage space between the movable crank arm and the support arm, so that the movable crank arm has sufficient expansion and contraction space along the radial direction of the pipeline, thereby meeting the detection requirements of pipelines with different diameters and improving the adaptability of the detection device.

[0020] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a synchronous self-protection electromagnetic ultrasonic pipeline detection device of the present invention;

[0022] Figure 2 This is a front view of a synchronous self-protection electromagnetic ultrasonic pipeline detection device of the present invention;

[0023] Figure 3 This is a left side view of a synchronous self-protection electromagnetic ultrasonic pipeline detection device of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the connection and cooperation between the detection probe, the moving component and the supporting component in the present invention;

[0025] Figure 5 Schematic diagram of the three-dimensional structure of the warehouse body in the present invention;

[0026] Figure 6 It is a main sectional view of the warehouse body in the present invention.

[0027] Reference numerals:

[0028] 01 - Chamber body; 11 - Support flange; 111 - First flange; 112 - Second flange; 113 - Third flange; 114 - Fourth flange; 12 - Fixing rod; 13 - First fixing ring; 14 - Second fixing ring; 15 - Wiring hole; 16 - Anti-collision mechanism; 161 - Fixing plate; 162 - Anti-collision frame; 163 - Universal joint; 17 - Chamber cover; 02 - Detection assembly; 21 - Detection probe; 22 - Probe housing; 23 - Battery pack; 24 - Storage module; 03-support assembly; 31-first support arm; 32-second support arm; 33-first connecting rod; 34-second connecting rod; 35-support tension spring; 04-moving assembly; 41-first moving curved arm; 42-second moving curved arm; 43-moving wheel; 44-first support seat; 45-second support seat; 46-third support seat; 47-fourth support seat; 48-first elastic connecting rod; 49-second elastic connecting rod; 50-first rotation adjustment rod; 51-second rotation adjustment rod. DETAILED DESCRIPTION

[0029] like Figure 1 、 2 As shown in Figure 4, the present invention provides a synchronous self-protection electromagnetic ultrasonic pipeline detection device, including a warehouse body 01; a detection component 02, the detection component 02 includes a detection probe 21; a support component 03, the support component 03 includes a first support arm 31 and a second support arm 32, one end of the first support arm 31 and the second support arm 32 are respectively fixedly arranged on opposite sides of the detection probe 21; a moving component 04, the moving component 04 includes a first moving curved arm 41 and a second moving curved arm 42, each of which has a moving wheel 43 at one end, the first moving curved arm 41 and the second moving curved arm 42 are respectively rotatably arranged at opposite ends of the warehouse body 01 and arranged along the extension direction of the warehouse body 01, the other end of the first support arm 31 is rotatably connected to the other end of the first moving curved arm 41, and the other end of the second support arm 32 is rotatably connected to the other end of the second moving curved arm 42, and the first moving curved arm 41 and the second moving curved arm 42 can drive the detection probe 21 to move synchronously with itself along the radial direction of the pipeline.

[0030] The chamber 01 serves as the support structure for the inspection device and is used to connect with other components. The inspection probe 21 is used to detect defects such as cracks, corrosion, and deformation on the inner wall of the pipeline. The upper ends of the first and second support arms 31 and 32 are fixedly connected to the left and right side walls of the inspection probe 21 via bolts, thereby firmly fixing the inspection probe 21 and ensuring that the inspection probe 21 always faces the inner wall of the pipeline, facilitating pipeline inspection.

[0031] The first movable curved arm 41 and the second movable curved arm 42 are both L-shaped curved arms, and the bending parts of the two curved arms are rotatably connected to the left and right ends of the warehouse body 01 respectively. The upper ends of the first movable curved arm 41 and the second movable curved arm 42 are respectively provided with movable wheels 43, and the movable wheels 43 are pressed against the inner wall of the pipeline to drive the detection device to move. The lower ends of the first movable curved arm 41 and the second movable curved arm 42 are rotatably connected to the lower ends of the first support arm 31 and the second support arm 32 respectively. The first support arm 31 and the second support arm 32 can be support arms or L-shaped curved arms, preferably L-shaped curved arms, which are conducive to enhancing the coordination and connection effect of the support arms and the movable curved arms. In this way, the warehouse body 01 is coordinated and connected with the support assembly 03, the movable assembly 04 and the detection probe 21 to form a "moving wheel 43-curved arm-support arm-probe" linkage system, so that the detection probe 21 can move synchronously along the radial direction of the pipeline with the moving curved arm, that is, the first movable curved arm 41 and the second movable curved arm 42 can drive the detection probe 21 to move synchronously along the radial direction of the pipeline with the movement of the first movable curved arm 41 and the second movable curved arm 42.

[0032] The height of the detection probe 21 is always lower than the moving wheel 43. This design has multiple advantages. First, it can avoid the detection probe 21 from colliding or rubbing with the inner wall of the pipe, effectively protecting the detection probe 21 and extending its service life; second, it ensures that the detection probe 21 always maintains a certain distance from the inner wall of the pipe, thereby ensuring the accuracy of the detection, and the height difference can be set according to needs; third, the two movable curved arms of the detection device can extend outward or contract inward on the warehouse body 01, and can be applied to pipes of different diameters, overcoming the limitation of existing detection equipment that can only be applied to pipes of fixed diameters, and can realize the operation of the pipeline in pipes with prominent deformation defects, serious weld nodules and high elbow passability requirements, ensuring the stability and passability of the detection, improving the safety and adaptability of the detection probe 21, and reducing repair and operation costs.

[0033] During use, the detection device is placed in the pipeline and propelled forward by a robot or high-pressure gas. When the pipe diameter changes, the first movable curved arm 41 and the second movable curved arm 42 rotate along the radial direction of the pipe on the silo 01. When the pipe diameter increases, the two movable curved arms extend outward and drive the two support arms to extend outward synchronously. When the pipe diameter decreases, the two movable curved arms retract inward, driving the two support arms to retract inward synchronously. Ensure that the moving wheel 43 always rests against the inner wall of the pipe during the movement of the detection device, and that the detection probe 21 always maintains a certain detection distance from the inner wall of the pipe. After the detection is completed, the detection device can be removed from the pipe.

[0034] It should be noted that the outward extension described above and below refers to extension in a direction away from the central axis of the pipe, and the inward contraction refers to contraction in a direction close to the central axis of the pipe.

[0035] like Figure 2 、 4 As shown, the support assembly 03 further includes a first connecting rod 33 and a second connecting rod 34. The first fixing ring 13 and the second fixing ring 14 are sleeved on the warehouse body 01. One end of the first connecting rod 33 is rotatably connected to the first support arm 31, and the other end of the first connecting rod 33 is rotatably connected to the first fixing ring 13. One end of the second connecting rod 34 is rotatably connected to the second support arm 32, and the other end of the second connecting rod 34 is rotatably connected to the second fixing ring 14. The support assembly 03 further includes a support tension spring 35, one end of the support tension spring 35 is connected to the first support arm 31, and the other end of the support tension spring 35 is connected to the second support arm 32.

[0036] In actual inspections, the lengths or diameters of the pipes to be inspected vary. If a longer pipe is encountered, the inspection device needs to operate continuously in the pipe. This requires the inspection device to have extremely strong stability and inspection accuracy to prevent failures during operation in the pipe that affect inspection efficiency.

[0037] Based on this, a first fixing ring 13 and a second fixing ring 14 are sleeved in the middle of the warehouse body 01. The two fixing rings are firmly connected to the warehouse body 01 by welding or bolts. The two ends of the first connecting rod 33 are respectively connected to the bending part of the first support arm 31 and the first fixing ring 13 by locking pins. Similarly, the two ends of the second connecting rod 34 are also connected to the bending part of the second support arm 32 and the second fixing ring 14 by locking pins. In this way, the first support arm 31 is supported by the first connecting rod 33 and the first fixing ring 13, and the second support arm 32 is supported by the second connecting rod 34 and the second fixing ring 14. At the same time, the elastic force of the support tension spring 35 is used to tighten the two support arms. This arrangement, on the one hand, can ensure that the two support arms will not fall due to their own gravity and the gravity of the detection probe 21, thereby avoiding the two movable curved arms from shrinking inward due to falling and affecting the detection accuracy, and ensure that the movable wheel 43 can always be against the inner wall of the pipe, and the detection probe 21 always maintains a certain detection distance from the inner wall of the pipe; on the other hand, it can enhance the linkage between the movable curved arm and the support arm, shorten the response time of the linkage between the two, and reduce the ineffective stroke of the linkage.

[0038] During the detection process, the detection device is placed in the pipeline. At this time, the support tension spring 35 is in a stretched state. When the pipe diameter becomes larger, the support tension spring 35 contracts under the action of elastic force. At the same time, the first support arm 31 and the second support arm 32 rotate and extend outward, driving the first connecting rod 33 and the second connecting rod 34 to rotate, and then driving the detection probe 21 to extend synchronously outward along the radial direction of the pipeline.

[0039] When the pipe diameter becomes smaller, the first support arm 31 and the second support arm 32 rotate and shrink inward, driving the first connecting rod 33 and the second connecting rod 34 to rotate, and driving the detection probe 21 to shrink inward synchronously along the radial direction of the pipe. The support spring 35 is stretched as the two support arms shrink inward.

[0040] like Figure 1 、 2 As shown, a support flange 11 is provided on the warehouse body 01, and the support flange 11 includes a first flange 111, a second flange 112, a third flange 113 and a fourth flange 114. The second flange 112 and the third flange 113 are respectively arranged at opposite ends of the warehouse body 01, the first flange 111 and the second flange 112 are connected by a fixed rod 12 and are arranged at intervals, the third flange 113 and the fourth flange 114 are connected by a fixed rod 12 and are arranged at intervals, and the first movable crank arm 41 and the second movable crank arm 42 are rotatably connected to the first flange 111 and the fourth flange 114 respectively.

[0041] The support flange 11 is fixed to the silo 01 by bolts to achieve a coordinated connection with other components. Specifically, the second flange 112 and the third flange 113 are fixed to the left and right side walls of the silo 01 by bolts respectively. The four flanges have the same structure, and their surfaces are provided with multiple through holes evenly distributed along the circumference. The number of fixing rods 12 is equal to the number of through holes on each flange. Each fixing rod 12 is provided with threads at both ends. Multiple fixing rods 12 are respectively inserted into the corresponding through holes of the first flange 111 and the second flange 112, and fixed by nuts, thereby fixing the first flange 111 and the second flange 112 at intervals. Similarly, the fourth flange 114 is also fixed to the third flange 113 at intervals by multiple fixing rods 12. This arrangement forms two support structures on the left and right sides of the silo 01, effectively solving the problem of space shortage caused by the linkage of the movable crank arm and the support arm.

[0042] In addition, the flange is provided with a through groove opened in the radial direction. The through grooves on the second flange 112 and the third flange 113 can not only ensure the range of movement of the first support arm 31 and the second support arm 32, realize the extension and contraction of the support arm along the radial direction of the pipeline, but also play a limiting role on the support arm.

[0043] During the inspection process, the movable curved arm extends or contracts along the radial direction of the pipe according to changes in the pipe diameter (such as cracks, weld nodules, pits, etc.). Since the first support arm 31 and the second support arm 32 are respectively located in the through grooves on the second flange 112 and the third flange 113, the support arms will extend or contract in the through grooves synchronously with the movable curved arm.

[0044] like Figure 1 、 2As shown in FIG. 4 , the moving assembly 04 further includes a first support seat 44 and a fourth support seat 47 respectively arranged on the inner walls of the first flange 111 and the fourth flange 114, a second support seat 45 and a third support seat 46 respectively arranged on the inner walls of the second flange 112 and the fourth flange 114, a first rotation adjustment rod 50, a second rotation adjustment rod 51, a first elastic link 48 and a second elastic link 49, the first movable crank arm 41 and the second movable crank arm 42 are respectively rotatably connected to the first support seat 44 and the fourth support seat 47, and one end of the first elastic link 48 is away from the first movable crank arm 41 One end of the moving wheel 43 is rotatably connected, the other end of the first elastic link 48 is rotatably connected to the end of the first support arm 31 away from the detection probe 21 and one end of the first rotation adjustment rod 50, the other end of the first rotation adjustment rod 50 is rotatably connected to the second support seat 45, one end of the second elastic link 49 is rotatably connected to the end of the second moving curved arm 42 away from the moving wheel 43, the other end of the second elastic link 49 is rotatably connected to the end of the second support arm 32 away from the detection probe 21 and one end of the second rotation adjustment rod 51, and the other end of the second rotation adjustment rod 51 is rotatably connected to the third support seat 46.

[0045] The first support seat 44 and the fourth support seat 47 are respectively fixed to the inner walls of the first flange 111 and the fourth flange 114 by bolts. The first movable crank arm 41 and the second movable crank arm 42 are rotatably connected to the first support seat 44 and the fourth support seat 47 by locking pins. The left and right ends of the first elastic link 48 are rotatably connected to the lower ends of the first movable crank arm 41 and the lower ends of the first support arm 31 by locking pins. Similarly, the left and right ends of the second elastic link 49 are also rotatably connected to the lower ends of the second support arm 32 and the lower ends of the second movable crank arm 42 by locking pins. This arrangement has multiple advantages. First, a strong spring is provided in the upper middle portion of the elastic link, which utilizes its elastic properties to enhance the linkage between the movable crank arm and the support arm. Combined with the support tension spring 35, the response time of the linkage between the two can be further shortened, reducing the ineffective travel of the linkage. Second, the movable crank arm's range of motion and the linkage space between the movable crank arm and the support arm can be increased, allowing the movable crank arm to have sufficient radial expansion and contraction space along the pipeline, thereby meeting the inspection requirements of pipelines of different diameters and improving the adaptability of the inspection device.

[0046] It should be specifically explained that the two side walls opposite to each other of the first flange 111 and the second flange 112 are respectively inner walls of the two, and the two side walls opposite to each other of the first flange 111 and the second flange 112 are respectively outer walls of the two. Similarly, the two side walls opposite to each other of the third flange 113 and the fourth flange 114 are respectively inner walls of the two, and the two side walls opposite to each other of the third flange 113 and the fourth flange 114 are respectively outer walls of the two.

[0047] The second support seat 45 and the third support seat 46 are respectively fixed to the inner walls of the second flange 112 and the third flange 113 by bolts, and are located in the through groove. The upper and lower ends of the first rotation adjustment rod 50 are respectively rotatably connected to the second support seat 45 and the right end of the first elastic connecting rod 48 through a pin shaft. Similarly, the upper and lower ends of the second rotation adjustment rod 51 are also rotatably connected to the left ends of the third support seat 46 and the second elastic connecting rod 49 through a pin shaft. With the help of the second support seat 45, the third support seat 46, the first rotation adjustment rod 50 and the second rotation adjustment rod 51, the stability of the cooperation between the movable crank arm and the support arm can be further enhanced, ensuring that the detection probe 21 always moves along the radial direction of the pipeline with the movable crank arm and will not deviate, thereby ensuring the accuracy of the detection of the detection device.

[0048] During the detection process, as the pipe diameter becomes smaller, when the movable crank arm contracts inward along the pipe diameter direction, it will drive the elastic connecting rod to move. At this time, the elastic connecting rod is in a stretched state, and pulls the support arm to move under the assistance of its elastic force. When the support arm moves, it contracts synchronously with the movable crank arm along the pipe diameter direction under the support of the connecting rod. At this time, the support tension spring 35 is in a stretched state.

[0049] As the pipe diameter increases, the tensioned support spring 35 contracts under its elastic force, pulling the two support arms closer together. As the two support arms approach, they each extend outward along the pipe diameter, supported by the connecting rod. The outward extension of the support arms pulls the elastic connecting rod to move, which in turn pulls the movable curved arm to extend outward along the pipe diameter. Simultaneously, the tensioned elastic connecting rod also contracts under its elastic force, pulling the movable curved arm to move. Consequently, under the combined elastic forces of the tensioned support spring 35 and the elastic connecting rod, the movable curved arm and the support arm extend outward synchronously along the pipe diameter.

[0050] like Figure 1 、 2 As shown, there are multiple detection probes 21, multiple groups of support components 03 and mobile components 04, the warehouse body 01 is cylindrical, and multiple detection probes 21 correspond one-to-one to multiple groups of support components 03 and mobile components 04 and are evenly arranged along the circumference of the warehouse body 01.

[0051] There are multiple detection probes 21, and the number of support components 03 and movable components 04 is the same as the number of detection probes 21 (i.e., one-to-one correspondence). In addition, the number of through grooves on the second flange 112 and the third flange 113 is also the same as the number of detection probes 21. In this way, a detection device architecture is formed that can perform all-round detection of the pipeline, thereby ensuring the accuracy and stability of the detection.

[0052] like Figure 1As shown, the detection component 02 also includes a probe shell 22 corresponding to the detection probe 21 . The detection probe 21 is arranged in the probe shell 22 . The first support arm 31 and the second support arm 32 are respectively fixedly arranged on opposite sides of the probe shell 22 .

[0053] Each detection probe 21 is securely mounted within a probe housing 22. Two support arms are bolted to the left and right sidewalls of the probe housing 22. A detection window is located on the top surface of the probe housing 22 (i.e., the side facing the inner wall of the pipe). The detection probe 21 inspects the pipe through the detection window. The probe housing 22 has a tapered design. This reduces the top surface area of the probe housing 22 and prevents collision or friction between the probe housing 22 and protrusions such as weld nodules on the inner wall of the pipe, effectively protecting the detection probe 21. This ensures both detection accuracy and a longer service life.

[0054] In order to further protect the detection probe 21, a roller can be installed on the top of the probe shell 22. When encountering a protrusion such as a weld nodule, the roller can roll over to avoid direct contact between the probe shell 22 and the protrusion.

[0055] like Figure 1 、 5 As shown in Figures 6 and 7, the detection component 02 also includes a battery pack 23 and a storage module 24 arranged in the warehouse body 01. The warehouse body 01 is provided with a plurality of wiring holes 15 along the circumference. The battery pack 23 and the storage module 24 are electrically connected through wires, and the storage module 24 is connected to the detection probe 21 through an excitation cable and a collection cable respectively.

[0056] The battery pack 23 is used to power the storage module 24 and the detection probe 21. The specific connections are as follows:

[0057] The battery pack 23 is connected to the power supply port of the storage module 24 via a wire, powering the storage module 24. The excitation port of the storage module 24 is connected to the excitation cable on the detection probe 21. In addition to stimulating the detection probe 21 via the excitation cable, the storage module 24 also provides power to the detection probe 21. The acquisition port of the storage module 24 is connected to the acquisition cable on the detection probe 21. Both the excitation cable and the acquisition cable are connected to the storage module 24 through the wiring holes 15 in the housing 01.

[0058] In addition to the above-mentioned internal power supply detection method, in order to meet the needs of long-term detection, this detection device can also perform external power supply detection through cables, as follows:

[0059] There is a bin cover 17 on the barrel opening on both sides of the bin body 01. The cable is introduced into the bin body 01 through the airtight aviation plug of the bin cover 17. The airtight aviation plug is electrically connected to the power supply interface of the storage module 24 through a wire to supply power to the storage module 24 and the detection probe 21, or the airtight aviation plug is connected to the charging interface of the battery pack 23 through a wire to charge it.

[0060] The electromagnetic detection principle of this detection device is as follows:

[0061] The detection device is placed in the pipeline and driven by a traction force such as a robot or a pressure differential across the pipeline. During its movement, the detection probe 21, stimulated by the storage module 24, generates an alternating magnetic field around the probe. The bias magnetic field and the dynamic magnetic field induce skin currents near the inner surface of the pipeline. These skin alternating currents, under the influence of the bias magnetic field, generate particle vibrations, which in turn generate stress body waves. Corrosion defects in the inner and outer pipe walls, due to factors such as ultrasonic impedance, generate echo signals containing defect information. This affects the distribution and magnitude of the skin currents, leading to distortion of the surrounding magnetic field through the electromagnetic back effect. The detection probe 21 captures the changing characteristics of the magnetic field and generates a voltage signal. The voltage signal is collected and stored in parallel by the storage module 24. After the test, the host computer software analyzes the signal characteristics and, combined with mileage information, determines the defect location.

[0062] This patent mainly provides a synchronous self-protection electromagnetic ultrasonic pipeline detection device for the safe operation and maintenance of oil and gas pipelines. The core of its detection principle is the coupling mechanism of electromagnetic induction and ultrasonic waves: a skin current is formed in the near-surface of the inner wall of the pipeline through a high-frequency alternating electromagnetic field, and Lorentz force and magnetostriction are generated under the action of a static bias magnetic field, generating stress ultrasonic waves based on structural strain; the receiving end converts the magnetic field signal into a voltage signal through the inverse effect of the ultrasonic echo, and collects and stores it.

[0063] like Figure 1 、 2 As shown in Figure 3, an anti-collision mechanism 16 is also provided on the warehouse body 01. The anti-collision mechanism 16 includes a fixed plate 161 and an anti-collision frame 162. One end of the anti-collision frame 162 is arranged on one surface of the fixed plate 161, and the other surface of the fixed plate 161 is arranged on the outer wall of the first flange 111 or the fourth flange 114.

[0064] The anti-collision frame 162 is constructed from multiple anti-collision rods in a conical structure. Its blunt end is welded to one surface of the fixed plate 161, with the pointed end extending outward. A hollow center facilitates cable insertion when in external power supply detection mode. The other surface of the fixed plate 161 is attached to the outer wall of the first flange 111 or the fourth flange 114 and is securely fastened with bolts. The diameter of the fixed plate 161 is the same as or slightly smaller than that of the flange, providing protection for the detection device with the aid of the anti-collision mechanism 16.

[0065] To enhance the protection effect, an anti-collision mechanism 16 can be installed on each of the first flange 111 and the fourth flange 114. During the detection process, the anti-collision mechanism 16 can not only prevent the flange from colliding with the protrusions in the pipeline, but also can transport the detection device through the anti-collision frame 162.

[0066] In addition, the detection device can move in both directions, that is, it can detect back and forth in the pipeline without having to specifically change the direction of the detection device, thereby improving detection efficiency. During the back and forth detection process, the setting of the double anti-collision mechanism 16 further improves the safety of the detection device.

[0067] When high-pressure gas is used as the driving force to drive the detection device, in order to enhance the driving effect, a leather cup can be installed on each of the first flange 111 and the fourth flange 114. The leather cup can improve the air tightness between the detection device and the pipeline, and the air pressure difference can be used to push the detection device to move stably in the pipeline, thereby ensuring the stability of the detection.

[0068] like Figure 1 、 2 As shown, a universal joint 163 for power connection is provided on the anti-collision frame 162.

[0069] The tips of the anti-collision frames 162 of the two anti-collision mechanisms 16 are each equipped with a universal joint 163. When the detection device is in externally powered detection mode, the universal joint 163 facilitates a secure connection with a traction source, such as a robot. During the detection process, if bumps such as weld nubs or potholes are encountered, a displacement difference along the pipeline radial direction will occur between the detection device and the robot. The presence of the universal joint 163 ensures that the two automatically adjust their positions during bumps, thereby improving the stability of the detection device.

[0070] It should be noted that the directions or positional relationships indicated by terms such as "center", "up", "down", "front", "back", "left", "right", and "middle" are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0071] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0072] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A synchronous self-protection electromagnetic ultrasonic pipeline detection device, characterized by: It includes a warehouse body; a detection component, the detection component includes a detection probe; a support component, the support component includes a first support arm and a second support arm, one end of the first support arm and the second support arm are respectively fixedly arranged on opposite sides of the detection probe; a moving component, the moving component includes a first movable curved arm and a second movable curved arm, each of which is provided with a movable wheel at one end, the first movable curved arm and the second movable curved arm are respectively rotatably arranged at opposite ends of the warehouse body and arranged along the extension direction of the warehouse body, the other end of the first support arm is rotatably connected to the other end of the first movable curved arm, and the other end of the second support arm is rotatably connected to the other end of the second movable curved arm, and the first movable curved arm and the second movable curved arm can drive the detection probe to move synchronously with themselves along the radial direction of the pipeline.

2. The synchronous self-protection electromagnetic ultrasonic pipeline detection device according to claim 1, characterized in that: The support assembly also includes a first connecting rod and a second connecting rod, and a first fixing ring and a second fixing ring are sleeved on the warehouse body. One end of the first connecting rod is rotatably connected to the first support arm, and the other end of the first connecting rod is rotatably connected to the first fixing ring. One end of the second connecting rod is rotatably connected to the second support arm, and the other end of the second connecting rod is rotatably connected to the second fixing ring.

3. The synchronous self-protection electromagnetic ultrasonic pipeline detection device according to claim 2, characterized in that: The support assembly further comprises a support tension spring, one end of which is connected to the first support arm, and the other end of which is connected to the second support arm.

4. The synchronous self-protection electromagnetic ultrasonic pipeline detection device according to claim 1, characterized in that: A supporting flange is provided on the warehouse body, and the supporting flange includes a first flange, a second flange, a third flange and a fourth flange. The second flange and the third flange are respectively arranged at opposite ends of the warehouse body. The first flange and the second flange are connected by a fixing rod and are arranged at intervals. The third flange and the fourth flange are connected by a fixing rod and are arranged at intervals. The first movable crank arm and the second movable crank arm are rotatably connected to the first flange and the fourth flange respectively.

5. The synchronous self-protection electromagnetic ultrasonic pipeline detection device according to claim 4, characterized in that: The movable assembly also includes a first support seat and a fourth support seat respectively arranged on the inner walls of the first flange and the fourth flange, a second support seat and a third support seat respectively arranged on the inner walls of the second flange and the fourth flange, a first rotation adjusting rod, a second rotation adjusting rod, a first elastic link and a second elastic link, the first movable curved arm and the second movable curved arm are rotatably connected to the first support seat and the fourth support seat respectively, one end of the first elastic link is rotatably connected to the end of the first movable curved arm away from the movable wheel, the other end of the first elastic link is rotatably connected to the end of the first support arm away from the detection probe and one end of the first rotation adjusting rod, the other end of the first rotation adjusting rod is rotatably connected to the second support seat, one end of the second elastic link is rotatably connected to the end of the second movable curved arm away from the movable wheel, the other end of the second elastic link is rotatably connected to the end of the second support arm away from the detection probe and one end of the second rotation adjusting rod, and the other end of the second rotation adjusting rod is rotatably connected to the third support seat.

6. The synchronous self-protection electromagnetic ultrasonic pipeline detection device according to claim 5, characterized in that: There are multiple detection probes, and there are multiple groups of support components and moving components. The warehouse body is cylindrical, and the multiple detection probes correspond to the multiple groups of support components and moving components one by one and are evenly arranged along the circumference of the warehouse body.

7. The synchronous self-protection electromagnetic ultrasonic pipeline detection device according to claim 6, characterized in that: The detection assembly further includes a probe shell corresponding to the detection probe in a one-to-one manner. The detection probe is arranged in the probe shell, and the first support arm and the second support arm are respectively fixedly arranged on opposite sides of the probe shell.

8. The synchronous self-protection electromagnetic ultrasonic pipeline detection device according to claim 7, characterized in that: The detection component also includes a battery pack and a storage module arranged in the warehouse body. The warehouse body is provided with a plurality of wiring holes along the circumference. The battery pack and the storage module are electrically connected through wires, and the storage module is connected to the detection probe through an excitation cable and a collection cable respectively.

9. The synchronous self-protection electromagnetic ultrasonic pipeline detection device according to claim 8, characterized in that: The warehouse body is also provided with an anti-collision mechanism, which includes a fixed plate and an anti-collision frame. One end of the anti-collision frame is arranged on one surface of the fixed plate, and the other surface of the fixed plate is arranged on the outer wall of the first flange or the fourth flange.

10. The synchronous self-protection electromagnetic ultrasonic pipeline detection device according to claim 9, characterized in that: The anti-collision frame is provided with a universal joint for power connection.

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