Pressure pipe welding seam scanning mechanism, method and device and computer equipment

Abstract

The invention relates to the technical field of pipeline welding seam nondestructive testing, in particular to a pressure pipe welding seam scanning mechanism, method and device and computer equipment. The mechanism comprises a circular plate adjusting assembly, an opening and closing assembly, an aligning assembly and a rotary scanning assembly, the circular plate adjusting assembly comprises a circular plate, a first adjusting assembly and a second adjusting assembly, and the first adjusting assembly is annularly and fixedly connected to the edge of the circular plate; one end of the second adjusting assembly is fixedly connected with the circle center of the circular plate; the opening and closing assembly comprises two oppositely arranged semi-circular ring plates used for separately sleeving a to-be-detected pipeline; the rotary scanning assembly comprises a second fixed end and a second telescopic part, the second telescopic part is fixedly provided with an array eddy current probe and an ultrasonic detector, the array eddy current probe is used for detecting defects of the to-be-detected pipeline, and the ultrasonic detector is used for detecting the distance between the array eddy current probe and a welding seam of the to-be-detected pipeline. The welding seam detection device is used for detecting welding seams of pipelines with different mounting angles, does not need to be disassembled and assembled frequently, and is convenient to operate and high in detection efficiency.

Description

Technical Field

[0001] This specification relates to the technical field of non-destructive testing of pipeline welds, in particular to pressure pipe weld scanning mechanisms, methods, devices and computer equipment. Background Art

[0002] Welds, the joints connecting two pipes in pipeline construction, have a direct impact on the safety and service life of the pipeline. Weld defects can easily lead to stress concentration, shortening service life, or even causing fractures, resulting in safety accidents. Pressure pipelines are particularly susceptible to cracking and seal failure over long periods of operation, making pipeline weld inspection crucial.

[0003] During use, the weld scanning device in the existing technology requires manual assembly of the base, installation of the annular turntable, and installation of the detection device, and manual operation is required to complete the pre-tightening and fixing of the pipeline. The entire process is cumbersome, and disassembly and assembly are time-consuming and labor-intensive, which greatly reduces the efficiency of weld scanning of the target pipeline. Summary of the Invention

[0004] To solve the problems in the prior art, the embodiments of this specification provide a pressure pipe weld scanning mechanism, method, device and computer equipment.

[0005] The embodiment of this specification provides a pressure pipe weld scanning mechanism, which includes: a circular plate adjustment component, an opening and closing component, a centering component, and a rotary scanning component:

[0006] The circular plate adjustment assembly includes: a circular plate, a first adjustment assembly and a second adjustment assembly, wherein the first adjustment assembly is annularly fixedly connected to the edge of the circular plate, and one end of the second adjustment assembly is fixedly connected to the center of the circular plate;

[0007] The first adjustment assembly includes a first telescopic portion and a first fixed end, one side of each first fixed end is fixedly connected to the telescopic end of the first telescopic portion, and the other side of the first fixed end is buckled and connected to the edge of the circular plate, and the first telescopic portion is used to adjust the movement of the circular plate by extending and retracting the telescopic end;

[0008] The second adjustment component includes: a first motor and a shaft rotating coaxially with the first motor, the output shaft end of the first motor is fixedly connected to the end of the shaft away from the circular plate, the other end of the shaft is movably sleeved with a shaft cylinder, the end of the shaft cylinder away from the first motor is fixedly connected to the center of the circular plate, the first motor is used to drive the shaft to rotate, so as to drive the shaft cylinder to push the circular plate to rotate along the axial direction of the shaft cylinder; the opening and closing assembly is connected to the circular plate through an opening and closing adjustment assembly, the opening and closing assembly includes: two oppositely arranged semicircular ring plates, and the semicircular ring plates are used to be separated and sleeved to the pipeline to be tested under the control of the opening and closing adjustment assembly; the rotary scanning assembly includes: a second fixed end buckled on the inner side of a semicircular ring plate, a second telescopic part is fixedly provided on the middle part of the outer side of the second fixed end, an array eddy current probe is fixedly provided on the telescopic end of the second telescopic part, and an ultrasonic detector is fixedly provided on the second telescopic part. The array eddy current probe is used to detect defects in the pipeline to be tested, and the ultrasonic detector is used to detect the distance between the array eddy current probe and the weld of the pipeline to be tested.

[0009] According to one aspect of an embodiment of the present specification, the mechanism further includes: when the pipeline to be tested is at a first angle, the first adjustment component is used to controllably drive the circular plate to extend a preset distance to reach the position of the pipeline to be tested; when the pipeline to be tested is at a second angle, the second adjustment component is used to controllably drive the circular plate, the opening and closing component, the centering component and the rotary scanning component to rotate to the second angle to reach the position of the pipeline to be tested.

[0010] According to one aspect of an embodiment of the present specification, the opening and closing adjustment assembly includes: a third telescopic portion, one end of the third telescopic portion is connected to the circular plate, the telescopic end of the third telescopic portion is connected to a circular disc, the circular disc is rotatably connected to the I-shaped plate and the first bent plate via a round rod, one end of the first bent plate is rotatably connected to the inner side of the I-shaped plate, the other end of the first bent plate is fixedly connected to the semicircular ring plate, and a variable angle is formed between the first bent plate and the I-shaped plate;

[0011] The third telescopic portion is used to push the disc to move so that the angle between the I-plate and the first bending plate changes, and drives the semicircular ring plate to move, so that the opening and closing assembly composed of the semicircular ring plate opens or closes.

[0012] According to one aspect of the embodiments of this specification, the centering assembly is arranged at equal intervals on the outer surface of one side of the circular ring, including: a vertical plate fixed on the surface of the semicircular ring plate, a second telescopic part and a top block, the second telescopic part is fixedly installed on the side facing the center of the semicircular ring plate, and the top block is fixedly connected to the telescopic end of the second telescopic part, and is used to approach the pipeline to be tested under the push of the second telescopic part.

[0013] According to one aspect of the embodiments of the present specification, when the semicircular ring plate is closed to form a ring under the action of the tension and closing adjustment component, the second telescopic part in the centering component is controlled to push the top block to move along the center direction of the ring with a constant pressure; when the top block is in contact and pressed against the pipe to be tested, it is determined that the clamping and centering are completed.

[0014] According to one aspect of the embodiments of this specification, a pressure sensor is provided on the side of the top block facing the pipeline to be tested, for determining whether the top block is clamping the pipeline to be tested.

[0015] According to one aspect of the embodiments of this specification, the scanning mechanism further includes: a supporting platform, including: a cylindrical groove, in which the circular plate adjustment component, the opening and closing component, the centering component and the rotary scanning component are accommodated; a flip plate, the flip plate is hingedly mounted on the top edge of the side of the supporting platform surface where the cylindrical groove is opened, and a magnetic strip is fixed on one side of the flip plate surface, and the flip plate is used to close the cylindrical groove in a closed state to protect the components in the cylindrical groove in a dust-free and closed environment, and is magnetically fixed to the supporting platform in an open state; a lifting and adjusting mechanism, the lifting and adjusting mechanism is arranged at the bottom of the supporting platform, including: a fourth telescopic part and a groove opened at the bottom end of the supporting platform, the telescopic end of the fourth telescopic part is fixedly connected to the top surface of the inner cavity of the groove, and is used to adjust the height of the scanning mechanism so that the opening and closing component and the pipeline to be tested are at the same horizontal height.

[0016] According to one aspect of the embodiments of this specification, a plurality of tooth grooves are provided on the inner sides of the two semicircular ring plates, a rotating rod is rotatably installed on the inner side of the second telescopic part, a gear meshing with the tooth groove is fixedly sleeved at a position on the outer circumference of the rotating rod corresponding to the tooth groove, a second motor is fixedly installed on the outer side of the second telescopic part, and the output shaft end of the second motor is transmission-connected to the rotating rod, the second motor is used to drive the rotating rod to rotate the gear along the tooth groove, and drive the array eddy current probe and the ultrasonic detector on the second telescopic part to move along the circumferential direction of the ring formed by the semicircular ring plates.

[0017] An embodiment of the present specification provides a method for scanning and inspecting pressure pipe welds, which is applied to a scanning mechanism for the pressure pipe welds, including: controlling the stretching and closing assembly, the centering assembly, and the rotary scanning assembly to extend out of a cylindrical slot through a circular plate adjustment assembly; adjusting the height of the scanning structure until the stretching and closing assembly and the pipe to be tested are at the same horizontal position; controlling the stretching and closing assembly to open according to the angle of the pipe to be tested to separate the pipe to be tested; starting the centering assembly so that the centering assembly clamps the pipe to be tested; controlling the scanning assembly to move in the circumferential direction of the circular ring formed by the closure of the stretching and closing assembly, collecting the weld position and obtaining weld defects, and realizing scanning of the weld.

[0018] According to one aspect of an embodiment of the present specification, controlling the opening and closing assembly to open to a preset angle based on the angle of the pipeline to be measured includes: when the pipeline to be measured is at a first angle, controlling the first adjustment assembly to start to drive the circular plate to extend a preset distance; when the pipeline to be measured is at a second angle, driving the motor to drive the circular plate, the opening and closing assembly, the centering assembly and the rotary scanning assembly to rotate to the second angle to reach the position of the pipeline to be measured.

[0019] According to one aspect of an embodiment of the present specification, the method further includes: starting the centering assembly so that the centering assembly clamps the pipe to be tested, including: detecting whether the semicircular ring plate is closed to form a ring; if so, controlling the second telescopic part to start with a constant pressure to make the centering assembly approach the pipe to be tested until the pipe to be tested is pressed; detecting whether the pressure between the centering assembly and the pipe to be tested reaches a preset threshold; if so, controlling the second telescopic part to stop working.

[0020] According to one aspect of an embodiment of the present specification, collecting the weld position and obtaining weld defects includes: using an ultrasonic detector to collect the distance between the scanning assembly and the weld of the pipeline to be tested; based on the distance, controlling the array eddy current probe to approach the weld, and using the array eddy current probe to detect the weld quality of the pipeline to be tested.

[0021] An embodiment of the present specification provides a pressure pipe weld scanning device, which is applied to a pressure pipe weld scanning method, and includes: an extension unit, used to control the stretching and closing component, the centering component and the rotary scanning component to extend out of the cylindrical groove through a circular plate adjustment component; an adjustment unit, used to adjust the height of the scanning structure until the stretching and closing component and the pipeline to be tested are at the same horizontal position; an angle control unit, used to control the stretching and closing component to open to a preset angle according to the angle of the pipeline to be tested, so that the pipeline to be tested can be accommodated in the stretching and closing component, and control the stretching and closing component to close to form a circular ring; a starting unit, used to start the centering component so that the centering component clamps the pipeline to be tested; and a scanning unit, used to control the scanning component to move in the circumferential direction of the circular ring formed by the closure of the stretching and closing component, collect the weld position and obtain weld defects, and realize scanning of the weld.

[0022] An embodiment of this specification also provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the analog integrated circuit test vector sorting method is implemented.

[0023] The embodiments of this specification also provide a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the analog integrated circuit test vector sorting method, device and computer equipment method.

[0024] The present invention cooperates with the circular plate adjustment component, the opening and closing component, the centering component and the rotary scanning component to not only realize weld detection of pipelines with different installation angles, but also eliminates the need for frequent disassembly and assembly, and is convenient and quick to operate, with high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1A Shown is a schematic diagram of a circular plate adjustment assembly according to an embodiment of this specification;

[0027] Figure 1B Shown is a specific schematic diagram of another circular plate adjustment assembly according to an embodiment of this specification;

[0028] Figure 2 Shown is another schematic diagram of a circular plate adjustment assembly according to an embodiment of this specification;

[0029] Figure 3A Shown is a schematic diagram of a rotary scanning assembly according to an embodiment of this specification;

[0030] Figure 3B Shown is another schematic diagram of a rotary scanning assembly according to an embodiment of this specification;

[0031] Figure 3C Shown is another schematic diagram of a rotary scanning assembly according to an embodiment of this specification;

[0032] Figure 4 Shown is a schematic diagram of an opening and closing assembly according to an embodiment of this specification;

[0033] Figure 5 Shown is a schematic diagram of a centering assembly in an embodiment of this specification;

[0034] Figure 6A The figure shows a side view of a pressure pipe weld scanning mechanism according to an embodiment of the present specification;

[0035] Figure 6B The figure shows a front cross-sectional view of a lifting and lowering adjustment mechanism according to an embodiment of the present specification;

[0036] Figure 6C This is a back view of a lifting and adjusting mechanism according to an embodiment of this specification;

[0037] Figure 7Shown is a flow chart of a pressure weld scanning method according to an embodiment of this specification;

[0038] Figure 8 The figure shows a flow chart of a method for controlling an opening and closing component according to an embodiment of the present specification;

[0039] Figure 9 Shown is a flow chart of a centering component control method according to an embodiment of this specification;

[0040] Figure 10 The figure shows a schematic structural diagram of a pressure pipe weld scanning device according to an embodiment of the present specification;

[0041] Figure 11 The figure shows a schematic diagram of the structure of a computer device according to an embodiment of the present specification.

[0042] Description of the accompanying symbols:

[0043] 1. Carrying platform; 2. Cylindrical groove; 3. Automatic scanning mechanism; 31. First motor; 32. First telescopic section; 33. Shaft; 34. Shaft cylinder; 35. Circular plate; 36. First fixed end; 37. First guide post; 38. Ring groove; 39. Guide bar; 310. Guide groove; 311. Frame plate; 312. Third telescopic section; 313. Disc; 314. Seat block; 315. First bending plate; 316. I-shaped plate; 317. Semicircular ring plate; 318. Vertical plate; 319 , second telescopic portion; 320, top block; 321, semicircular arc groove; 322, tooth groove; 323, second fixed end; 324, second guide column; 325, second motor; 326, gear; 327, fourth telescopic portion; 328, array eddy current probe; 329, ultrasonic detector; 330, second bending plate; 4, lifting adjustment mechanism; 41, base plate; 42, groove; 43, fifth telescopic portion; 44, moving wheel; 5, flip plate; 6, sinking groove; 7, magnetic strip;

[0044] 1001, extension unit;

[0045] 1002, adjustment unit;

[0046] 1003. Angle control unit;

[0047] 1004, starting unit;

[0048] 1005, scanning unit;

[0049] 1102. Computer equipment;

[0050] 1104, processor;

[0051] 1106. Memory;

[0052] 1108, driving mechanism;

[0053] 1110, input / output module;

[0054] 1112. Input device;

[0055] 1114. Output device;

[0056] 1116. Presentation equipment;

[0057] 1118. Graphical User Interface;

[0058] 1120, network interface;

[0059] 1122, communication link;

[0060] 1124. Communication bus. DETAILED DESCRIPTION

[0061] To help those skilled in the art better understand the technical solutions in this specification, the following will provide a clear and complete description of the technical solutions in the embodiments of this specification, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without creative work are within the scope of protection of this specification.

[0062] It should be noted that the terms "first," "second," and the like in the description and claims of this specification and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of this specification described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product, or device comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or devices.

[0063] This specification provides method operation steps as described in the embodiments or flowcharts, but more or fewer operation steps may be included based on routine or non-creative work. The order of steps listed in the embodiments is only one way of executing the steps among many orderings and does not represent the only execution order. When a system or device product is actually executed, the method can be executed in the order shown in the embodiments or the drawings or in parallel.

[0064] It should be noted that the pressure pipe weld scanning mechanism and method of this specification can be used in the field of non-destructive testing technology for pipeline welds, and this specification does not limit the application field of the pressure pipe weld scanning mechanism and method.

[0065] The embodiment of this specification provides a scanning mechanism for a pressure pipe weld, wherein the scanning mechanism includes: a circular plate adjustment component, an opening and closing component, a centering component, and a rotary scanning component.

[0066] like Figure 1A The figure shows a schematic diagram of a circular plate adjustment assembly according to an embodiment of the present specification. In the figure, the circular plate adjustment assembly includes: a circular plate 35, a first adjustment assembly and a second adjustment assembly. The first adjustment assembly is fixedly connected to the edge of the circular plate in an annular shape, and one end of the second adjustment assembly is fixedly connected to the center of the circular plate. The first adjustment assembly includes a first telescopic portion 32 and a first fixed end ( Figure 1A Indicated by the letter C, Figure 1B Numbered 36).

[0067] Figure 1B A schematic diagram of another circular plate adjustment assembly according to an embodiment of this specification is shown. In the figure, one side of each first fixed end 36 is fixedly connected to the telescopic end of the first telescopic portion 32, while the other side of the first fixed end 36 is snap-fitted to the edge of the circular plate 35. The first telescopic portion 32 is configured to be moved by the telescopic adjustment circular plate 35 at the telescopic end. In this embodiment, the first fixed end may be a U-shaped bracket. A plurality of guide bars 39 are fixedly mounted on the outer circumference of the shaft 33. Guide grooves 310 are defined on the inner circumference of the shaft cylinder 34 at positions corresponding to each guide bar 39, and the guide bars 39 are slidably connected within the corresponding guide grooves 310. The second adjustment assembly includes a first motor 31 and a shaft 33 that rotates coaxially with the first motor 31. The output shaft end of the first motor 31 is fixedly connected to the end of the shaft 33 that is distal to the circular plate. A shaft cylinder 34 is movably sleeved onto the outer surface of the other end of the shaft 33. The end of the shaft cylinder 34 distal to the first motor 31 is fixedly connected to the center of the circular plate 35. In the embodiment of this specification, the first motor 31 drives the shaft 33 to rotate, thereby driving the shaft cylinder 34 to push the circular plate 35 to rotate along the axial direction of the shaft cylinder 34 .

[0068] In some embodiments of the present specification, when the pipeline to be measured is at a first angle, the first adjustment component is used to controllably drive the circular plate to extend a preset distance to reach the position of the pipeline to be measured. In the present specification, the first angle can be understood as the pipeline to be measured being at a positive angle, for example, 90°, 180°, etc., and the second angle can be understood as the pipeline to be measured being at an offset angle, for example, 30°, 57°, 142°, etc. In the initial state, the opening and closing component is connected to the circular plate, and the angle formed by the opening and closing component and the ground is 90° or 180°. Therefore, corresponding to the pipeline to be measured being at the first angle, the opening and closing component does not need to be rotated to be at the same angle as the pipeline to be measured. It is only necessary to control the first adjustment component to extend the opening and closing component in the axial direction to reach the position of the pipeline to be measured. Therefore, the first adjustment component is controlled to extend a preset distance to reach the position of the pipeline to be measured.

[0069] When the pipeline to be tested is at the second angle, the second adjustment component is used to controllably drive the circular plate, the stretching and closing component, the centering component, and the rotary scanning component to rotate to the second angle to reach the position of the pipeline to be tested. In this specification, corresponding to the pipeline to be tested being at the second angle, the stretching and closing component needs to be rotated to the same angle as the pipeline to be tested. Therefore, in addition to extending the stretching and closing component along the axial direction to reach the position of the pipeline to be tested, it is also necessary to rotate the stretching and closing component by a certain angle. Therefore, it is necessary to control the second adjustment component to drive the shaft rod 33 to rotate and drive the shaft cylinder 34 connected to the center of the circular plate 35 to rotate, so that the circular plate 35 rotates and drives the stretching and closing component connected to the circular plate 35 to rotate to a preset angle.

[0070] like Figure 2 Another schematic diagram of a circular plate adjustment assembly according to an embodiment of the present disclosure is shown. In the figure, first guide posts 37 are fixedly provided at positions corresponding to the annular grooves 38 on both sides of the inner cavity of the first fixed end 36, and the first guide posts 37 are slidably connected to the inner portions of the annular grooves 38 at the corresponding positions.

[0071] like Figure 3A Shown is a schematic diagram of a rotary scanning assembly according to an embodiment of this specification.

[0072] In some embodiments of the present specification, the rotary scanning assembly includes: a second fixed end fastened to the inner side of one of the semicircular ring plates 317; a telescopic portion fixed to the middle portion of the outer side of the fixed end; an array eddy current probe 328 fixed to the end of the telescopic portion; and an ultrasonic detector 329 fixed to the telescopic portion. The array eddy current probe 328 is used to detect defects in the pipeline under test, and the ultrasonic detector 329 is used to detect the distance between the array eddy current probe 328 and the weld of the pipeline under test.

[0073] Figure 3B FIG. 2 is another schematic diagram of a rotary scanning assembly according to an embodiment of the present disclosure, wherein a plurality of tooth grooves 322 are formed on the inner sides of the two semicircular ring plates 317 .

[0074] As shown in the figure, the second fixed end 323 can be a U-shaped frame, and the second fixed end 323 is buckled on the inner side of one of the semicircular ring plates 317. Second guide pillars 324 are fixedly provided at the positions corresponding to the semicircular groove 321 on both sides of the inner cavity of the second fixed end 323, and the second guide pillars 324 are slidably connected to the inside of the semicircular groove 321 at the corresponding position. A rotating rod is also rotatably installed on the inner side of the second fixed end 323, and a gear 326 meshing with the tooth groove 322 is fixedly sleeved on the outer circumference of the rotating rod at a position corresponding to the tooth groove 322. A second motor 325 is fixedly installed on the outer side of the second fixed end 323, and the output shaft end of the second motor 325 is transmission-connected to the rotating rod. 327 is fixedly installed on the middle part of the outer side of the second fixed end 323, and an array eddy current probe 328 is installed at the telescopic end of the fourth telescopic part 327. An ultrasonic detector 329 is also installed on the outer side of the second fixed end 323.

[0075] In this specification, the rotary scanning assembly further includes a second motor. A rotating rod is rotatably mounted inside the second telescopic portion, and a gear 326 is fixedly mounted on the outer circumference of the rotating rod at a position corresponding to the tooth groove 322, which is meshed with the tooth groove 322. A second motor 325 (such as Figure 3C (This figure shows another schematic diagram of a rotary scanning assembly according to an embodiment of the present disclosure.) The output shaft end of the second motor 325 is in transmission connection with the rotating rod. The second motor drives the rotating rod, causing the gear to rotate along the tooth groove 322, thereby driving the array eddy current probe 328 and ultrasonic detector 329 on the second telescopic section to move along the circumference of the ring formed by the semicircular ring plate.

[0076] like Figure 4 Shown is a schematic diagram of an opening and closing component according to an embodiment of this specification.

[0077] In some embodiments of this specification, the opening and closing assembly is connected to the circular plate via an opening and closing adjustment assembly. The opening and closing assembly comprises two opposing semicircular plates 317, which, under the control of the opening and closing adjustment assembly, are used to separate and fit the pipe under test. Specifically, the semicircular plates 317 are opened by the first bent plate 315. Once the pipe under test is inserted between the semicircular plates, they close together to form a circular ring.

[0078] In this specification, the opening and closing assembly includes a frame plate 311 fixedly mounted on the side of the circular plate 35 away from the shaft cylinder 34. A third telescopic portion 312 is fixedly mounted at the inner center of the frame plate 311. One end of the third telescopic portion is connected to the circular plate 35, and the telescopic end of the third telescopic portion is connected to a circular disc 313. The circular disc 313 is rotatably connected to an I-shaped plate 316 and a first bent plate 315 via a round rod. One end of the first bent plate 315 is rotatably connected to the inner side of the I-shaped plate 316, and the other end of the first bent plate is fixedly connected to a semicircular ring plate. A variable angle is formed between the first bent plate 315 and the I-shaped plate 316. The third telescopic portion is used to drive the circular disc to change the angle between the I-shaped plate 316 and the first bent plate 315, and to drive the semicircular ring plate to move, thereby opening or closing the opening and closing assembly formed by the semicircular ring plates.

[0079] Specifically, the telescopic end of the third telescopic part 312 movably passes through the frame plate 311, and the telescopic end of the third telescopic part 312 is fixedly connected to the disc 313. A U-shaped groove is provided in the middle of the side of the disc 313 away from the frame plate 311, and the first bending plate 315 is rotatably installed on the inner sides of both ends of the U-shaped groove through a round rod.

[0080] A seat block 314 is fixedly mounted on the outer side of the upper frame plate 311, away from the circular plate 35, at positions corresponding to the ends of the U-shaped groove. An I-shaped plate 316 is positioned between the seat block 314 and the first bent plate 315. Both the seat block 314 and the first bent plate 315 are pivotally mounted to the inner sides of the corresponding ends of the I-shaped plate 316 via round rods. The two first bent plates 315 and the second bent plate 330 are pivotally connected within the circular disk 313. The ends of the two second bent plates 330, away from the first bent plate 315, are fixedly connected to a semicircular ring plate 317.

[0081] In some embodiments of the present specification, when the two semicircular ring plates 317 need to open to a certain angle, the third telescopic portion 312 is controlled to push the disc 313 to move away from the frame plate 311, and the third telescopic portion applies a force to the circular axis between the disc 313 and the third telescopic portion, causing the disc 313 to be forced to move in a direction away from the third telescopic portion.

[0082] During this process, the angle formed between the I-shaped plate 316 and the frame plate 311 becomes larger, and the V-shaped angle formed between the first bent plate 315 and the I-shaped plate 316 gradually becomes larger (refer to Figure 4), the two first bent plates 315 are subjected to a force parallel to the circular axis. Because the first bent plate 315 and the second bent plate 330 are axially connected at the edges of the disk 313, the first bent plate 315 is subjected to force, driving the second bent plate 330, which is also subjected to force. The two second bent plates 330 are respectively connected to one end of the two semi-circular ring plates 317. When the two second semi-circular ring plates are subjected to force, they open in opposite directions, thereby driving the two semi-circular ring plates 317 to open. Conversely, when the two semi-circular ring plates 317 need to be closed to form a ring, the third telescopic portion 312 is controlled to retract its telescopic end away from the disk 313, driving the disk 313 toward the frame plate 311. The first bent plate 315 moves away from the circular axis, driving the second bent plate 330 toward the center of the disk 313, causing the two second bent plates 330 to approach each other and close the two semi-circular ring plates.

[0083] Furthermore, in order to precisely control the ring formed by the two semicircular ring plates 317 to remain flush with the extension direction of the pipeline to be scanned, an inclinometer can be added to the frame plate 311 to detect the deflection angle of the circular plate 35 to adapt to weld inspection of pipelines with different installation angles.

[0084] like Figure 5 Shown is a schematic diagram of a centering assembly in an embodiment of this specification.

[0085] In some embodiments of the present specification, the centering components are evenly spaced on the outer surface of one side of the ring formed by the two semi-circular ring plates 317. Specifically, four centering components are evenly spaced on the outer surface of one side of the ring.

[0086] The centering assembly includes a vertical plate 318 fixed to the surface of the semicircular ring plate, a second telescopic portion 319, and a top block 320. Specifically, the second telescopic portion 319 is fixedly mounted on the side facing the center of the semicircular ring plate. The top block 320 is fixedly connected to the telescopic end of the second telescopic portion 319, allowing it to be pushed closer to the pipe under test. In the embodiments of this specification, the second telescopic portion 319 can be any component with telescopic function, such as a cylinder, a motor, or a hydraulic rod.

[0087] When the semicircular ring plate closes to form a ring under the action of the tension and closing adjustment assembly, the second telescopic portion of the centering assembly is controlled to push the top block 320 toward the center of the ring with a constant pressure. When the top block 320 contacts and presses against the pipe under test, clamping and centering are determined to be complete. In the embodiment of this specification, a thin film pressure sensor is provided on the side of the top block 320 facing the pipe under test to determine whether the top block is firmly clamping the pipe under test. Specifically, the pressure value detected by the thin film pressure sensor is used to determine whether the top block is firmly clamping the pipe under test.

[0088] Figure 6AShown is a side view of a pressure pipe weld scanning mechanism according to an embodiment of this specification. The scanning mechanism comprises a support platform 1, which also includes a cylindrical groove 2 and a flip plate 5. The cylindrical groove 2 houses a circular plate adjustment assembly, an opening and closing assembly, a centering assembly, and a rotary scanning assembly. The flip plate 5 is hingedly mounted to the top edge of the support platform 1 on the side where the cylindrical groove 2 is located.

[0089] Furthermore, a magnetic strip 7 is fixedly provided on one side of the surface of the flip plate. When the flip plate 5 is in the closed state, it is used to close the cylindrical groove 2, protecting the components in the cylindrical groove 2 in a dust-free and closed environment. When the flip plate 5 is in the open state, it is magnetically fixed to the support platform 1. Specifically, a recessed groove 6 is provided on the surface of the flip plate 5 at one end away from the hinged end. The side of the flip plate 5 surface where the recessed groove 6 is provided and the side of the support platform 1 surface where the cylindrical groove 2 is provided are both fixedly embedded with a magnetic strip 7. The magnetic properties of the magnetic strip 7 on the flip plate 5 are opposite to those of the magnetic strip 7 on the support platform 1. Therefore, when the flip plate 5 is covered on the upper surface of the cylindrical groove 2, the magnetic strip 7 on the flip plate 5 and the magnetic strip 7 on the support platform 1 are attracted to each other, thereby achieving a firm covering of the cylindrical groove 2 by the flip plate 5, protecting the components in the cylindrical groove 2 in a sealed and dustproof environment.

[0090] Figure 6B The figure shows a front cross-sectional view of a lifting and lowering mechanism according to an embodiment of the present specification. In the figure, the lifting and lowering mechanism is arranged at the bottom of the supporting platform 1. It specifically includes a fifth telescopic portion 43 and a groove 42 provided at the bottom end of the supporting platform 1. The lifting and lowering mechanism includes a base plate 41 and a groove 42 provided on the bottom end surface of the supporting platform, the top end surface of the base plate is fixedly mounted with the fifth telescopic portion 43 at the four corners, the bottom end surface of the base plate 41 is mounted with moving wheels 44, and the telescopic end of the fourth telescopic portion is fixedly connected to the top end surface of the inner cavity of the groove. The fifth telescopic portion 43 is used to adjust the height of the scanning mechanism so that the opening and closing assembly and the pipeline to be measured are at the same horizontal height.

[0091] In some embodiments of the present specification, when using the array eddy current annular scanning mechanism, the scanning mechanism can be quickly moved to the detection position of the target pipeline to be tested by the moving wheel 44, and the height of the automatic scanning mechanism 3 can be adjusted by the fifth telescopic part 43 to improve the applicability of pipeline detection.

[0092] In some embodiments of the present specification, after the automatic scanning mechanism 3 is used, the first telescopic portion 32 can be used to drive the circular plate 35 to retract to the deepest part of the inner cavity of the cylindrical groove 2, so that the automatic scanning mechanism 3 is completely stored in the cylindrical groove 2, and the flip plate 5 is further flipped to engage with the side surface of the cylindrical groove 2 on the supporting platform 1, and the state of the flip plate 5 currently in the engaged state is limited by the magnetic strip 7, thereby realizing the non-use state protection of the array eddy current annular scanning mechanism.

[0093] Figure 6C As can be seen from the figure, the first motor 31 is arranged on the outer side of the carrier 1, and the automatic scanning mechanism 3 is arranged on the other outer side of the carrier 1, and the automatic scanning mechanism 3 is arranged opposite to the first motor 31.

[0094] Figure 7 The flowchart of a pressure weld scanning method according to an embodiment of the present invention is shown, which specifically includes the following steps:

[0095] Step 701, controlling the stretching and closing assembly, the centering assembly and the rotary scanning assembly to extend out of the cylindrical groove through the circular plate adjustment assembly. In the embodiment of the present specification, the circular plate adjustment assembly includes a first adjustment assembly and a second adjustment assembly. In this step, any one of the first adjustment assembly and the second adjustment assembly can be selected to control the stretching and closing assembly, the centering assembly and the rotary scanning assembly to extend out of the cylindrical groove. Specifically, by controlling the first telescopic portion of the first adjustment assembly, the first telescopic portion generates force and drives the circular plate to move axially in a direction away from the first telescopic portion through the telescopic end of the first telescopic portion, thereby driving the stretching and closing assembly connected to the circular plate, the centering assembly located on the stretching and closing assembly and the rotary scanning assembly to move together, thereby extending out of the cylindrical groove. Alternatively, by controlling the first motor in the second adjustment assembly, the first motor drives the shaft connected to its output end to rotate, and the rotation of the shaft drives the shaft cylinder at the end of the shaft to rotate, and the shaft cylinder drives the circular plate to rotate axially.

[0096] Step 702: Adjust the height of the scanning mechanism until the opening and closing assembly is aligned with the pipe under test. In this step, the height of the opening and closing assembly is adjusted to align with the pipe under test by adjusting the lifting mechanism within the scanning mechanism. Specifically, the fourth telescopic portion of the lifting mechanism is adjusted so that the telescopic end of the fourth telescopic portion is fixedly connected to the top surface of the groove cavity of the support platform, thereby achieving height adjustment of the scanning mechanism.

[0097] Step 703: Based on the angle of the pipe to be tested, the opening and closing assembly is controlled to open, thereby separating and fitting the pipe to be tested. In this step, when the angle of the pipe to be tested is a first angle, the first adjustment assembly is directly activated, causing the first adjustment assembly to extend the circular plate to accommodate the pipe to be tested within the opening and closing assembly, and then the opening and closing assembly is controlled to close to form a ring.

[0098] Step 704: Start the centering assembly to clamp the pipe to be tested.

[0099] In this step, when the two semi-circular plates are fully closed to form a ring, the pressure switch is activated to control the centering assembly to automatically clamp and center the pipe. When the two semi-circular plates are separated, the pressure switch is not triggered. When the semi-circular plates are closed to form a ring by the opening and closing assembly, the pressure switches at the ends of the two semi-circular plates are simultaneously triggered, causing the second fixed ends of the two semi-circular plates to synchronously drive the top block toward the pipe under test, thereby utilizing their synchronized expansion and contraction to achieve automatic clamping and centering.

[0100] In addition, a thin film pressure sensor can be added on the side of the top block facing the pipe to be tested to determine whether the clamping and centering work is completed.

[0101] Step 705 controls the scanning assembly to move circumferentially along the circular ring formed by the closing assembly, acquiring weld locations and detecting weld defects, thereby scanning the weld. In this step, an ultrasonic detector is used to measure the distance between the scanning assembly and the weld of the pipeline under test. Based on this distance, an eddy current array probe is controlled to approach the weld, where it then inspects the weld quality of the pipeline under test.

[0102] In the embodiment of this specification, when in the initial state, the ultrasonic detector 329 and the array eddy current probe 328 are in a flush position (see Figure 3B ), when the ultrasonic detector 329 detects the distance to the weld, the collected distance signal is transmitted to the system control end, and the system control end transmits a signal to the fourth telescopic part 327 according to the preset detection distance, thereby controlling the array eddy current probe 328 to approach the weld.

[0103] Figure 8 The flowchart of a method for controlling the opening and closing of a component according to an embodiment of the present specification is shown, which specifically includes the following steps:

[0104] Step 801: When the pipeline to be measured is at a first angle, the first adjustment component is controlled to start to drive the circular plate to extend a preset distance.

[0105] In some embodiments of the present specification, when the pipeline to be measured is at a first angle, the first adjustment component is used to controllably drive the circular plate to extend a preset distance to reach the position of the pipeline to be measured. In the present specification, the first angle can be understood as the pipeline to be measured being at a positive angle, for example, 90°, 180°, etc. In the initial state, the opening and closing component is connected to the circular plate, and the angle formed by the opening and closing component and the ground is 90° or 180°. Therefore, corresponding to the pipeline to be measured being at the first angle, the opening and closing component does not need to be rotated to be at the same angle as the pipeline to be measured. It is only necessary to control the first adjustment component to extend the opening and closing component in the axial direction to reach the position of the pipeline to be measured. Therefore, the first adjustment component is controlled to extend a preset distance to reach the position of the pipeline to be measured.

[0106] Step 802: When the pipeline to be tested is at a second angle, the motor is driven to drive the circular plate, the opening and closing assembly, the centering assembly, and the rotary scanning assembly to rotate to the second angle to reach the position of the pipeline to be tested.

[0107] In the embodiments of this specification, the second angle can be understood as the angle at which the pipeline to be tested is located other than the positive angle, or a more biased angle, such as 30°, 57°, 142°, etc. When the pipeline to be tested is at the second angle, the second adjustment component is used to control the circular plate, the stretching and closing component, the centering component and the rotary scanning component to rotate to the second angle to reach the position of the pipeline to be tested. In this specification, corresponding to the pipeline to be tested being at the second angle, the stretching and closing component needs to be rotated to the same angle as the pipeline to be tested. Therefore, in addition to extending the stretching and closing component along the axial direction to reach the position of the pipeline to be tested, the stretching and closing component also needs to be rotated a certain angle. Therefore, it is necessary to control the second adjustment component to drive the shaft to rotate and drive the shaft cylinder to rotate, so that the circular plate rotates and drives the stretching and closing component connected to the circular plate to rotate to a preset angle.

[0108] Figure 9 The flowchart of a centering assembly control method according to an embodiment of the present specification is shown, which specifically includes the following steps:

[0109] Step 901: Check whether the semicircular ring plate is closed to form a ring.

[0110] In an embodiment of the present specification, the contact surfaces of the two semicircular ring plates may be provided with a thin film pressure sensor for detecting whether the two semicircular ring plates are in contact. If so, it can be determined that the semicircular ring plates are closed to form a ring; if not, it can be determined that the semicircular ring plates are not closed and no ring is formed.

[0111] Step 902: If the result is negative, the second telescopic section is activated with constant pressure to move the centering assembly closer to the pipe under test until it is firmly pressed against the pipe. After the two semicircular ring plates close to form a ring, the second telescopic section is activated to provide constant pressure. The second telescopic section includes, but is not limited to, a cylinder, a hydraulic rod, or a drive motor. During the expansion and contraction process, the second telescopic section is controlled to release constant pressure, thereby gradually moving the top plate of the centering assembly closer to the pipe under test along the center of the ring until the top plate is firmly pressed against the pipe under test.

[0112] Step 903: Detect whether the pressure between the centering assembly and the pipe to be tested has reached a preset threshold. In this step, the patient determines whether the pressure between the centering assembly and the pipe to be tested has reached a preset threshold based on the pressure signal monitored by the thin film pressure sensor on the top plate of the centering assembly. Specifically, if the centering assembly is not in contact with the pipe to be tested, the monitored pressure signal is 0; if the centering assembly is in contact with the pipe to be tested, the monitored pressure signal exists. Further, based on the magnitude of the pressure signal, it is determined whether the pressure between the centering assembly and the pipe to be tested has reached the preset threshold for the compression standard.

[0113] Step 904: If yes, control the second telescopic part to stop working. In this step, if it is determined that the centering assembly and the pipe to be tested are already pressed tightly together, control the second telescopic part to stop applying pressure and stop extending and retracting, maintaining the tight state between the top plate and the pipe to be tested.

[0114] like Figure 10 FIG2 is a schematic diagram of a pressure pipe weld scanning device according to an embodiment of the present specification. The basic structure of the pressure pipe weld scanning device is described in this figure. The functional units and modules therein can be implemented in software, or a general chip or a specific chip can be used to implement pressure pipe weld scanning. The device specifically includes:

[0115] The extension unit 1001 is used to control the opening and closing assembly, the centering assembly and the rotary scanning assembly to extend out of the cylindrical slot through the circular plate adjustment assembly;

[0116] An adjusting unit 1002 is used to adjust the height of the scanning structure until the opening and closing assembly and the pipeline to be tested are at the same horizontal position;

[0117] An angle control unit 1003 is used to control the opening and closing assembly to open to a preset angle according to the angle of the pipe to be tested, so that the pipe to be tested can be accommodated in the opening and closing assembly, and control the opening and closing assembly to close to form a ring;

[0118] A starting unit 1004 is used to start the centering assembly so that the centering assembly clamps the pipe to be tested;

[0119] The scanning unit 1005 is used to control the scanning component to move along the circumferential direction of the ring formed by the closing component, collect the weld position and obtain weld defects, and realize the scanning of the weld.

[0120] like Figure 11The figure shows a computer device provided in an embodiment of the present specification. The pressure pipe weld scanning method described in the present application can be applied to the computer device. The computer device 1102 may include one or more processors 1104, such as one or more central processing units (CPUs), each of which may implement one or more hardware threads. The computer device 1102 may also include any memory 1106, which is used to store any type of information such as code, settings, data, etc. Without limitation, for example, the memory 1106 may include any one or more combinations of the following: any type of RAM, any type of ROM, flash memory device, hard disk, optical disk, etc. More generally, any memory may use any technology to store information. Further, any memory may provide volatile or non-volatile retention of information. Further, any memory may represent a fixed or removable component of the computer device 1102. In one case, when the processor 1104 executes the associated instructions stored in any memory or combination of memories, the computer device 1102 may perform any operation of the associated instructions. The computer device 1102 also includes one or more drive mechanisms 1108 for interacting with any storage, such as a hard disk drive mechanism, an optical disk drive mechanism, and the like.

[0121] The computer device 1102 may also include an input / output module 1110 (I / O) for receiving various inputs (via input devices 1112) and for providing various outputs (via output devices 1114). A specific output mechanism may include a presentation device 1116 and an associated graphical user interface (GUI) 1118. In other embodiments, the input / output module 1110 (I / O), input devices 1112, and output devices 1114 may not be included, and the computer device 1102 may simply be a computer device in a network. The computer device 1102 may also include one or more network interfaces 1120 for exchanging data with other devices via one or more communication links 1122. One or more communication buses 1124 couple the components described above together.

[0122] The communication link 1122 may be implemented in any manner, for example, via a local area network, a wide area network (e.g., the Internet), a point-to-point connection, etc., or any combination thereof. The communication link 1122 may include any combination of hardwired links, wireless links, routers, gateway functions, name servers, etc., governed by any protocol or combination of protocols.

[0123] Corresponding to Figures 7 to 9 The method in this specification also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the above method are executed.

[0124] The embodiment of this specification also provides a computer-readable instruction, wherein when the processor executes the instruction, the program therein causes the processor to execute the following Figures 7 to 9 The method shown.

[0125] It should be understood that in the various embodiments of this specification, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this specification.

[0126] It should also be understood that in the embodiments of this specification, the term "and / or" is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Furthermore, the character " / " in this specification generally indicates that the associated objects are in an "or" relationship.

[0127] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in this specification can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the composition and steps of each example according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this specification.

[0128] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0129] In the several embodiments provided in this specification, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, or can be an electrical, mechanical or other form of connection.

[0130] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of this specification.

[0131] In addition, the functional units in the various embodiments of this specification may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0132] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this specification is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of this specification. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0133] Specific embodiments are used in this specification to illustrate the principles and implementation methods of this specification. The description of the above embodiments is only used to help understand the methods and core ideas of this specification. At the same time, for those skilled in the art, based on the ideas of this specification, there will be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting this specification.

Claims

1. A pressure pipe weld scanning mechanism, characterized in that: The mechanism includes: a circular plate adjustment component, an opening and closing component, a centering component and a rotary scanning component: The circular plate adjustment assembly includes: a circular plate, a first adjustment assembly and a second adjustment assembly, wherein the first adjustment assembly is annularly fixedly connected to the edge of the circular plate, and one end of the second adjustment assembly is fixedly connected to the center of the circular plate; The first adjustment assembly includes a first telescopic portion and a first fixed end, one side of each first fixed end is fixedly connected to the telescopic end of the first telescopic portion, and the other side of the first fixed end is buckled and connected to the edge of the circular plate, and the first telescopic portion is used to adjust the movement of the circular plate by extending and retracting the telescopic end; The second adjustment assembly includes: a first motor and a shaft that rotates coaxially with the first motor, wherein the output shaft end of the first motor is fixedly connected to an end of the shaft away from the circular plate, and the other end of the shaft is movably sleeved with a shaft cylinder, and the end of the shaft cylinder away from the first motor is fixedly connected to the center of the circular plate, and the first motor is used to drive the shaft to rotate, thereby driving the shaft cylinder to push the circular plate to rotate along the axial direction of the shaft cylinder; The opening and closing assembly is connected to the circular plate through an opening and closing adjustment assembly, and the opening and closing assembly includes: two oppositely arranged semicircular ring plates, and the semicircular ring plates are used to be separately sleeved on the pipeline to be tested under the control of the opening and closing adjustment assembly; the rotary scanning assembly includes: a second fixed end buckled on the inner side of a semicircular ring plate, a second telescopic part is fixedly provided on the middle part of the outer side of the second fixed end, an array eddy current probe is fixedly provided on the telescopic end of the second telescopic part, and an ultrasonic detector is fixedly provided on the second telescopic part. The array eddy current probe is used to detect defects in the pipeline to be tested, and the ultrasonic detector is used to detect the distance between the array eddy current probe and the weld of the pipeline to be tested.

2. The pressure pipe weld scanning mechanism according to claim 1, characterized in that: The mechanism further comprises: When the pipeline to be tested is at a first angle, the first adjustment component is used to controllably drive the circular plate to extend a preset distance to reach the position of the pipeline to be tested; When the pipeline to be tested is at a second angle, the second adjustment component is used to controllably drive the circular plate, the opening and closing component, the centering component and the rotary scanning component to rotate to the second angle to reach the position of the pipeline to be tested.

3. The pressure pipe weld scanning mechanism according to claim 1, characterized in that: The opening and closing adjustment component includes: a third telescopic portion, one end of the third telescopic portion being connected to the circular plate, the telescopic end of the third telescopic portion being connected to a circular disc, the circular disc being rotatably connected to the I-shaped plate and the first bent plate via a round rod, one end of the first bent plate being rotatably connected to the inner side of the I-shaped plate, the other end of the first bent plate being fixedly connected to the semicircular ring plate, and a variable angle being formed between the first bent plate and the I-shaped plate; The third telescopic portion is used to push the disc to move so that the angle between the I-plate and the first bending plate changes, and drives the semicircular ring plate to move, so that the opening and closing assembly composed of the semicircular ring plate opens or closes.

4. The pressure pipe weld scanning mechanism according to claim 3, characterized in that: The centering assembly is arranged at equal intervals on the outer surface of one side of the circular ring, and includes: a vertical plate fixed to the surface of the semicircular ring plate, a second telescopic part and a top block. The second telescopic part is fixedly installed on the side facing the center of the semicircular ring plate. The top block is fixedly connected to the telescopic end of the second telescopic part and is used to approach the pipeline to be tested under the push of the second telescopic part.

5. The pressure pipe weld scanning mechanism according to claim 4, characterized in that: When the semicircular ring plate closes to form a ring under the action of the tension and closing adjustment component, the second telescopic part in the centering component is controlled to push the top block to move along the center direction of the ring with a constant pressure; when the top block is in contact and pressed against the pipe to be tested, it is determined that the clamping and centering are completed.

6. The pressure pipe weld scanning mechanism according to claim 5, characterized in that: A pressure sensor is provided on the side of the top block facing the pipeline to be tested, which is used to determine whether the top block clamps the pipeline to be tested.

7. The pressure pipe weld scanning mechanism according to claim 1, characterized in that: The scanning mechanism further comprises: The carrier platform includes: A cylindrical groove, wherein the circular plate adjustment assembly, the opening and closing assembly, the centering assembly and the rotary scanning assembly are housed in the cylindrical groove; A flip plate is hingedly mounted on the top edge of the side of the supporting platform where the cylindrical groove is formed. A magnetic strip is fixed to one side of the flip plate surface. When the flip plate is closed, it is used to seal the cylindrical groove to protect the components in the cylindrical groove in a dust-free and closed environment. When the flip plate is open, it is magnetically fixed to the supporting platform. A lifting and adjusting mechanism is provided at the bottom of the supporting platform, comprising: The fourth telescopic part and the groove opened at the bottom end of the supporting platform, the telescopic end of the fourth telescopic part is fixedly connected to the top surface of the inner cavity of the groove, and are used to adjust the height of the scanning mechanism so that the opening and closing assembly and the pipeline to be tested are at the same horizontal height.

8. The pressure pipe weld scanning mechanism according to claim 1, characterized in that: A plurality of tooth grooves are provided on the inner sides of the two semicircular ring plates, a rotating rod is rotatably installed on the inner side of the second telescopic part, a gear meshing with the tooth groove is fixedly sleeved at a position on the outer circumference of the rotating rod corresponding to the tooth groove, a second motor is fixedly installed on the outer side of the second telescopic part, an output shaft end of the second motor is transmission-connected to the rotating rod, the second motor is used to drive the rotating rod to rotate the gear along the tooth groove, and drive the array eddy current probe and the ultrasonic detector on the second telescopic part to move along the circumferential direction of the ring formed by the semicircular ring plates.

9. A pressure pipe weld scanning method, characterized in that: The method is applied to the pressure pipe weld scanning mechanism according to any one of claims 1 to 8, comprising: The opening and closing assembly, the centering assembly and the rotary scanning assembly are controlled to extend out of the cylindrical slot by the circular plate adjustment assembly; Adjusting the height of the scanning structure until the opening and closing assembly and the pipeline to be tested are at the same horizontal position; According to the angle of the pipeline to be measured, the opening and closing components are controlled to open so as to separate and cover the pipeline to be measured; Starting the centering assembly so that the centering assembly clamps the pipe to be tested; The scanning component is controlled to move along the circumference of the ring formed by the closing component, the weld position and weld defects are collected, and the weld is scanned.

10. The pressure pipe weld scanning method according to claim 9, characterized in that: The controlling the opening and closing assembly to open to a preset angle according to the angle of the pipeline to be measured comprises: When the pipeline to be tested is at a first angle, the first adjustment component is controlled to start so as to drive the circular plate to extend a preset distance; When the pipeline to be tested is at the second angle, the driving motor drives the circular plate, the opening and closing assembly, the centering assembly and the rotary scanning assembly to rotate to the second angle to reach the position of the pipeline to be tested.

11. The pressure pipe weld scanning method according to claim 10, characterized in that: The method further comprises: Starting the centering assembly so that the centering assembly clamps the pipe to be tested includes: Check whether the semicircular ring plate is closed to form a ring; If so, control the second telescopic part to start at a constant pressure, so that the centering assembly approaches the pipe to be tested until it is pressed against the pipe to be tested; Detecting whether the pressure between the centering component and the pipeline to be tested reaches a preset threshold; If so, the second telescopic part is controlled to stop working.

12. The pressure pipe weld scanning method according to claim 11, characterized in that: Collecting weld locations and obtaining weld defects includes: Using an ultrasonic detector to collect the distance between the scanning component and the weld of the pipeline to be tested; According to the distance, the array eddy current probe is controlled to be close to the weld, and the array eddy current probe is used to detect the weld quality of the pipeline to be tested.

13. A pressure pipe weld scanning device, characterized in that: The device is applied to the pressure pipe weld scanning method according to any one of claims 9 to 12, comprising: An extension unit, used for controlling the extension of the opening and closing assembly, the centering assembly and the rotary scanning assembly to extend out of the cylindrical slot through the circular plate adjustment assembly; An adjusting unit, used for adjusting the height of the scanning structure until the opening and closing assembly and the pipeline to be tested are at the same horizontal position; An angle control unit, configured to control the opening and closing assembly to open to a preset angle according to the angle of the pipe to be tested, so that the pipe to be tested can be accommodated in the opening and closing assembly, and to control the opening and closing assembly to close to form a ring; A starting unit, used for starting the centering assembly so that the centering assembly clamps the pipe to be tested; The scanning unit is used to control the scanning component to move along the circumferential direction of the ring formed by the closing of the opening and closing component, collect the weld position and obtain weld defects, and realize the scanning of the weld.

14. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method according to any one of claims 9 to 12 is implemented.

15. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 9 to 12 is implemented.

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