Pipeline welding seam flaw detection device and detection method thereof

Abstract

The invention relates to the technical field of weld joint detection, in particular to a pipeline weld joint flaw detection device and a detection method thereof.The detection device comprises a fixed seat, a movable seat, a supporting assembly, a moving assembly and a detection assembly; a fixed seat is fixedly arranged at one end of the base, a movable seat is movably arranged at the other end of the base, the moving assembly is movably arranged between the fixed seat and the movable seat, a positioning unit is movably arranged on the moving assembly and comprises a positioning plate, and a pipeline is placed on the positioning plate; the ends, close to each other, of the fixed base and the movable base are rotationally provided with supporting assemblies, and the two supporting assemblies are concentrically arranged. A detection assembly is installed in the middle of the moving assembly and comprises a rotating plate, adjusting units are movably arranged at the two ends of the rotating plate respectively, ultrasonic probes are arranged on the adjusting units, and the adjusting units move in a reciprocating mode through a reciprocating lead screw mechanism; the detection method is applied to the detection device, two sides of an annular welding seam or a longitudinal welding seam can be detected at the same time, and the detection effect is more comprehensive and accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of weld detection, and in particular to a pipeline weld flaw detection device and a detection method thereof. Background Art

[0002] The main purpose of pipeline weld flaw detection is to provide non-destructive testing of the integrity of pipeline welds to detect possible defects in the welds, such as cracks, lack of fusion, slag inclusions, etc., so as to ensure the quality and safety of the pipelines. In particular, pipelines in dangerous fields such as petrochemicals and pipeline welds made of difficult-to-weld materials such as titanium alloys must be tested for flaw detection. Weld quality detection methods include using the penetrating power of X-rays or gamma rays and taking X-rays of welds to observe the defects inside the welds, or using the principle that ultrasonic waves will reflect, refract or scatter when they encounter defects when propagating in the material, and measuring the propagation time and waveform changes of ultrasonic waves to detect defects. To judge the defects in the weld, either a magnetic field is applied to the pipeline to generate a leakage magnetic field at the defect, which adsorbs magnetic powder to form visible magnetic marks, or a penetrant is applied to the weld surface, which will penetrate into the tiny defects on the surface and then display the defects through a developer for penetration testing; in the prior art, ultrasonic flaw detection is usually performed by an operator holding an ultrasonic probe. The handheld ultrasonic probe is used to perform flaw detection on one side of the weld. After testing one side of the weld, the probe is moved to the other side of the weld for testing, so as to check and verify the test results and avoid missed detection. This method has low detection efficiency, is time-consuming and labor-intensive, and the detection accuracy is greatly affected by the subjectivity of the operator.

[0003] Although there are some ultrasonic flaw detection devices in the prior art for inspecting pipeline welds, they only inspect one side of the weld to prevent missed inspections. After inspecting one side, it is still necessary to move to the other side of the weld for inspection and verification, which still has the problem of low efficiency. In addition, the existing devices only inspect circular welds or linear welds, and the inspection range is relatively single.

[0004] Therefore, there is an urgent need to provide a pipeline weld flaw detection device and a detection method thereof to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a pipeline weld flaw detection device and a detection method thereof, which can detect both sides of the weld at the same time when detecting annular welds and longitudinal welds, and the detection effect is more comprehensive and accurate.

[0006] To achieve the above object, the present invention provides the following technical solutions: A pipeline weld flaw detection device comprises a base, a fixed base, a movable base, a support assembly, a movable assembly, a detection assembly and an ultrasonic probe; the base comprises a bottom plate, one end of which is fixedly provided with a fixed base, a movable base and a movable assembly are movably provided on the bottom plate, the movable assembly is located between the fixed base and the movable base, a positioning unit is movably provided on the movable assembly, the positioning unit comprises a positioning plate, a pipeline is placed on the positioning plate, and the positioning plate is lifted and lowered by a gear rack transmission; the ends of the fixed base and the movable base close to each other are both rotatably provided with support assemblies, and the two groups of support assemblies are concentrically arranged; the support assembly comprises a plurality of support units arranged at intervals along the circumferential direction, and the plurality of support units cooperate to support the inner wall of the pipeline; a detection assembly is installed in the middle of the movable assembly, the detection assembly comprises a rotatably provided rotating plate, and adjustment units are movably provided at both ends of the rotating plate, an ultrasonic probe is provided on the adjustment unit, and the adjustment unit is reciprocated by a screw nut mechanism.

[0007] Preferably, the rotating plate is rotatably provided with two reciprocating screws, and the two reciprocating screws are movably connected with matching blocks, and the lower parts of the two matching blocks are vertically rotatably provided with movable screws, and the two movable screws are respectively matched and connected with two adjusting units, one of the adjusting units is located above the corresponding movable screw, and the other adjusting unit is located below the corresponding movable screw.

[0008] Preferably, the adjusting unit comprises a support rod, an auxiliary rod and a rotating block; the support rod is threadedly connected to the movable screw via a nut block, one end of the support rod extends vertically outward and is rotatably connected to one end of the auxiliary rod, the other end of the support rod is rotatably connected to the rotating block, the other end of the auxiliary rod is fixedly connected to the inclined surface arranged on the rotating block via a fixedly arranged connecting spring, and an ultrasonic probe is installed on the side of the rotating block away from the support rod.

[0009] Preferably, the moving component includes a moving plate and an arc-shaped member; an arc-shaped member is vertically fixed on one end of the upper surface of the moving plate, the arc-shaped member is concentrically arranged with the supporting component, a detection component is installed in the middle of the arc-shaped plate, a moving cavity is opened in the middle of the upper surface of the moving plate, and a positioning unit is installed in the moving cavity.

[0010] Preferably, the positioning unit also includes a rotating rod, a toothed part and a positioning gear; the two ends of the lower surface of the positioning plate are respectively rotatably connected with rotating rods, two toothed parts are centrally symmetrically arranged, a positioning gear is rotatably arranged in the middle of the movable cavity, the two toothed parts cooperate with the positioning gear at the same time, and the ends of the two toothed parts far away from each other are respectively rotatably connected to the lower ends of the two rotating rods.

[0011] Preferably, the detection assembly also includes a fixed rod and a matching plate; one end of the fixed rod is fixedly connected to the arc-shaped member, and the side of the fixed rod away from the arc-shaped member is connected to the matching plate through the telescopic end of the driving cylinder, and two arc grooves are penetrated through the matching plate, and a rotating gear is rotatably arranged on the matching plate, an arc-shaped rack is fixedly arranged in the middle of one side of the rotating plate, the arc-shaped rack is meshed with the rotating gear, and the sliding rods fixedly arranged on both sides of the rotating plate are respectively movably connected to the two arc grooves on the matching plate.

[0012] Preferably, the support assembly also includes an outer support ring, an inner support ring and a ring sleeve which are arranged concentrically; the outer support ring, the inner support ring and the ring sleeve are fixedly connected in sequence, a planetary gear mechanism is installed on the inner wall of the inner support ring, and a plurality of support units are movably arranged along the circumference of the outer support ring, the support unit includes a mating gear, a rack and an abutment plate, the mating gears in the plurality of support units are driven by the planetary gear mechanism to achieve synchronous rotation, the rack is meshingly connected with the mating gear, and an abutment plate is fixedly arranged on the end of the rack away from the outer support ring.

[0013] Preferably, it also includes a control unit, a camera and a nozzle, wherein the camera is fixedly arranged in the middle of the rotating plate, and the nozzles are fixedly arranged on both sides of the camera; the control unit is electrically connected to the driving cylinder.

[0014] Preferably, the detection component also includes two scraping mechanisms, which are respectively arranged on two matching blocks, and the scraping mechanisms are located between the adjustment unit and the nozzle. The scraping mechanisms include telescopic rods and rotating telescopic cylinders that are respectively rotatably arranged on the matching blocks. The telescopic rod is rotatably connected to a coating block, the telescopic end of the rotating telescopic cylinder is rotatably connected to the side of the telescopic rod, a tensioning spring is arranged in the telescopic rod, and the rotating telescopic cylinder is electrically connected to the control unit.

[0015] A pipeline weld flaw detection method, applied to the above-mentioned pipeline weld flaw detection device, comprises the following steps: S1: Adjust the position of the movable seat, adjust the extension of the abutment plates on the two sets of support components, place the pipe to be tested on the positioning plate, and adjust the height of the positioning plate; S2: Adjust the position of the movable seat so that the support assembly installed on the movable seat contacts the inner wall of one end of the pipeline to be inspected; adjust the movable seat and the moving assembly at the same time so that the inner wall of the other end of the pipeline to be inspected contacts the support assembly installed on the fixed seat, and adjust the positioning plate to fall back and reset; S3: The mobile component moves, and the support component rotates in coordination, so that the detection component is close to the weld. The camera shoots the weld of the pipeline to be detected to determine the direction of the weld. If the weld is longitudinal, the detection component is rotated so that the two ultrasonic probes are located on both sides of the longitudinal weld, and the support component is adjusted so that the camera is aligned with the weld, and the process goes to S4. If the weld is annular, the detection component is rotated so that the two ultrasonic probes are located on both sides of the annular weld, and the mobile component is adjusted so that the camera is aligned with the weld, and the process goes to S5. S4: Move the moving assembly close to the fixed seat or the movable seat, adjust the detection assembly so that the scraping mechanism is close to the pipeline to be detected, and the nozzle sprays the coupling agent along both sides of the longitudinal weld; adjust the scraping mechanism, adjust the adjustment unit, slowly move the moving assembly to the other end of the pipeline, and at the same time, the scraping mechanism scrapes the coupling agent on both sides of the longitudinal weld, and the ultrasonic probe detects the quality of the longitudinal weld; S5: Adjust the detection component so that the scraping mechanism is close to the pipeline to be detected, spray the coupling agent along both sides of the annular weld with the nozzle, adjust the scraping mechanism, adjust the adjustment unit, the support component drives the pipeline to rotate, and at the same time, the scraping mechanism scrapes the coupling agent on both sides of the annular weld, and the ultrasonic probe detects the quality of the annular weld.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a pipeline weld flaw detection device, wherein the detection component includes a rotatably arranged matching plate, two matching blocks are synchronously arranged in opposite directions on the matching plate, an ultrasonic probe that can move back and forth is installed on the matching block, and the matching plate can be rotated 90 degrees through gears and arc rack transmission, so that the two ultrasonic probes can simultaneously perform detection along both sides of the longitudinal weld or the annular weld, which can significantly shorten the detection time and greatly improve the detection efficiency. A moving screw is rotatably arranged on the matching block, an adjustment unit is installed on the moving screw, and an ultrasonic probe is installed on the adjustment unit. The adjustment unit can be adjusted by a screw mechanism to make the ultrasonic probe contact with the pipeline. When detecting the longitudinal weld, the adjustment unit can make the ultrasonic probe adjust the contact position with the outer wall of the pipeline during the detection process, so as to better cover various areas inside the pipeline, which helps to improve the comprehensiveness and accuracy of the detection.

[0017] The present invention provides a pipeline weld flaw detection device, which comprises a base, a fixed base fixed at one end of the base, and a movable base movably arranged at the other end of the base. The sides of the fixed base and the movable base close to each other are rotatably provided with support components, and the two groups of support components are concentrically arranged. A movable component is movably arranged between the fixed base and the movable base. A positioning unit is arranged on the movable component. The positioning unit can preliminarily locate the position of the pipeline so that the two groups of support components can cooperate to clamp and support the inner wall of the pipeline. The positioning unit is adjusted according to different inner diameters of the pipeline, and the movable base can be moved according to pipelines of different lengths. The relative position between the fixed base and the movable base is adjusted to adapt to pipelines of different specifications, thereby improving the applicability of the device.

[0018] The present invention provides a pipeline weld flaw detection device, wherein two adjustment units are respectively located on the upper and lower sides of a movable screw rod. The setting of the adjustment units enables two ultrasonic probes to be staggered on both sides of the weld, ensuring that the ultrasonic probes maintain a certain distance when moving toward the weld at the same time, thereby reducing the situation where two groups of ultrasonic waves respectively emitted by the two ultrasonic probes interfere with each other at the weld, thereby affecting the weld quality detection result.

[0019] A pipeline weld flaw detection method provided by the present invention is applied to a pipeline weld flaw detection device. By arranging ultrasonic probes on both sides of the weld, comprehensive detection of annular welds or longitudinal welds can be achieved, which can significantly shorten the detection time and achieve a more comprehensive and accurate detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the connection structure of a pipeline weld flaw detection device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the exploded structure of the connection between the base, the fixing base and the supporting assembly according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the exploded structure of the connection between the base, the movable seat and the support assembly according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the connection structure between the moving component and the detection component in an embodiment of the present invention; Figure 5 This is a schematic diagram of the decomposition structure of the detection component connection according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the decomposition structure of another perspective of the detection component connection according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the detection assembly for detecting the annular weld of a pipeline according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of a detection assembly detecting a longitudinal weld according to an embodiment of the present invention; Fig. 9 This is a schematic diagram of the connection decomposition structure of the positioning unit according to an embodiment of the present invention; Fig.10 It is a schematic diagram of the exploded structure of the support assembly connection according to an embodiment of the present invention.

[0021] Reference numerals: 1, base; 11, guide groove; 12, moving groove; 13, bottom plate; 14, second screw rod; 15, first screw rod; 2, fixed seat; 21, fixed frame; 22, side rod; 23, support plate; 25, mounting member; 26, mounting shaft; 27, rotating sleeve; 28, driving gear; 29, driven gear; 3, movable seat; 31, moving frame; 311, moving rod; 312, guide rail; 32, connecting frame; 33, fixed Fixed plate; 34, connecting shaft; 35, connecting sleeve; 38, support member; 4, support assembly; 41, outer support ring; 411, through groove 1; 42, inner support ring; 421, through groove 2; 43, mounting plate; 44, U-shaped plate; 45, planetary gear mechanism; 46, ring sleeve; 47, matching gear; 48, rack; 49, abutment plate; 5, moving assembly; 51, moving plate; 511, side plate; 512, moving rail; 513, support block ; 52, arc-shaped member; 521, arc-shaped plate; 53, support rod; 54, positioning plate; 55, rotating rod; 56, toothed member; 57, rotating head; 58, positioning gear; 59, driven bevel gear; 510, driving bevel gear; 6, detection component; 61, fixing rod; 62, connecting plate; 63, driving cylinder; 64, matching plate; 641, arc-shaped groove; 642, connecting hole; 643, rotating shaft; 65, rotating gear; 66, rotating plate; 6 61. Arc rack; 662. Rotating shaft; 663. Sliding rod; 67. Reciprocating screw; 68. Matching rod; 69. Matching block; 610. Moving screw; 611. Support rod; 6111. Vertical rod; 612. Auxiliary rod; 6121. Connecting spring; 613. Rotating block; 614. Scraping mechanism; 6141. Telescopic rod; 6142. Coating block; 6143. Rotating telescopic cylinder; 7. Camera; 8. Sprinkler; 9. Ultrasonic probe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the following description of the invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are based on directions or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. The term "connection" only indicates the connection between devices and has no special meaning.

[0024] In addition, the technical fields and installation methods involved in the embodiments of the present invention described below can be combined with each other as long as there is no conflict between them.

[0025] Specific implementation: Please refer to Figure 1-Figure 10 A pipeline weld flaw detection device is used to detect the quality of pipeline welds, including a base 1, a fixed base 2, a movable base 3, a support assembly 4, a movable assembly 5, a detection assembly 6, a camera 7, a nozzle 8 and an ultrasonic probe 9; the base 1 includes a bottom plate 13, one end of which is fixedly provided with a fixed base 2, a movable base 3 and a movable assembly 5 are movably provided on the bottom plate 13, and both the movable base 3 and the movable assembly 5 can be moved along the length direction of the bottom plate 13, the movable assembly 5 is located between the fixed base 2 and the movable base 3, and a positioning unit is movably provided on the movable assembly 5, and the positioning unit includes a positioning plate 54, a pipeline is placed on the positioning plate 54, and the positioning plate 54 is realized by a gear rack transmission Lifting; the fixed seat 2 and the movable seat 3 are rotatably provided with a support assembly 4 at one end close to each other, and the two groups of support assemblies 4 are concentrically arranged, and the two groups of support assemblies 4 cooperate to support the inner walls of the ends of the pipe; the support assembly 4 includes a plurality of support units arranged at intervals along the circumferential direction, and the plurality of support units can cooperate to support the inner wall of the pipe; a detection assembly 6 is installed in the middle of the moving assembly 5, and the detection assembly 6 includes a rotating plate 66, and the rotating plate 66 moves radially through the action of the driving cylinder 63, and ultrasonic probes 9 are provided at both ends of the rotating plate 66, and the two ultrasonic probes 9 are symmetrically arranged and synchronously moved by a screw nut mechanism, and a camera 7 and a nozzle 8 are fixedly provided on the rotating plate 66.

[0026] The base 1 also includes a guide groove 11, a movable groove 12, a first screw rod 15 and a second screw rod 14. The guide grooves 11 are symmetrically fixedly arranged on both sides of the upper surface of the bottom plate 13, and the guide grooves 11 are used to movably connect the movable seat 3. The movable grooves 12 are symmetrically fixedly arranged on the side walls of the bottom plate 13, and the movable grooves 12 are used to movably connect the movable assembly 5; baffles are fixedly arranged on both ends of the upper surface of the bottom plate 13, and the first screw rod 15 and the second screw rod 14 are rotatably arranged in the middle of the baffle. A movable motor (not shown in the figure) and a driving motor (not shown in the figure) are fixedly arranged on the outer wall of one of the baffles, and the output shaft of the driving motor passes through the baffle and is fixedly connected to the first screw rod 15, the first screw rod 15 passes through the movable assembly 5 and is threadedly connected with the nut mechanism in the movable seat 3, driving the movable seat 3 to move along the length direction of the bottom plate 13, the output shaft of the movable motor passes through the baffle and is fixedly connected to the second screw rod 14, and the second screw rod 14 passes through the movable seat 3 and is threadedly connected with the nut mechanism in the movable assembly 5, driving the movable assembly 5 to move along the length direction of the bottom plate 13.

[0027] The fixed seat 2 comprises a fixed frame 21, a side rod 22, a support plate 23, a mounting member 25, a mounting shaft 26, a rotating shaft sleeve 27, a driving gear 28 and a driven gear 29; the fixed frame 21 adopts a portal frame structure, the fixed frame 21 is fixedly connected to the bottom plate 13, the side rods 22 are symmetrically fixedly arranged on both sides of the fixed frame 21, a support plate 23 is fixedly arranged between the two side rods 22, a mounting shaft 26 is fixedly penetrated in the middle of the support plate 23, the side rods 22 are fixedly connected to the mounting member 25 facing the side wall of the movable seat 3, and the mounting shaft 26 passes through the mounting member 25. , and the mounting shaft 26 is fixedly connected to the middle of the mounting member 25, and a rotating sleeve 27 is rotatably provided at one end of the mounting shaft 26 extending toward the moving component 5, and the supporting component 4 is mounted on the rotating sleeve 27; a driven gear 29 is fixedly sleeved on the rotating sleeve 27, and a driving gear 28 is rotatably provided on the mounting member 25, and the driving gear 28 is meshedly connected with the driven gear 29, and a rotating motor (not shown in the figure) is fixedly provided on the side wall of the mounting member 25 away from the driving gear 28, and the output shaft of the rotating motor passes through the mounting member 25 and is fixedly connected to the driving gear 28.

[0028] The movable seat 3 includes a movable frame 31, a fixed plate 33, a connecting shaft 34, a connecting shaft sleeve 35 and a support member 38; the movable frame 31 adopts a double-layer door frame structure, and a movable rod 311 is fixedly arranged at the lower part of both ends of the movable frame 31, and a guide rail 312 is fixedly arranged on the lower surface of the movable rod 311. The guide rails 312 at both ends of the movable frame 31 are respectively slidably matched with the guide grooves 11 fixedly arranged on both sides of the bottom plate 13, and a support member 38 is fixedly arranged between the opposite sides of the two movable rods 311, and a nut head 1 is fixedly arranged on the support member 38. The support member 38 is threadedly connected to the first screw rod 15 through the nut head 1, and the second screw rod 14 is connected to the support member 38 through a threading connection; the movable frame 3 Two groups of connecting frames 32 are fixedly arranged at the upper end, and fixing plates 33 are fixedly arranged at the lower parts of the two groups of connecting frames 32. A connecting shaft 34 is fixedly penetrated in the middle of the fixing plate 33. A connecting shaft sleeve 35 is fixedly arranged on one end of the connecting shaft 34 extending to the fixing seat 2. The connecting shaft sleeve 35 is rotatably connected with a group of supporting components 4, and the supporting components 4 installed on the movable seat 3 can rotate with the supporting components 4 installed on the fixing seat 2; when the movable seat 3 is adjusted to drive the supporting components 4 to cooperate with the end of the pipeline, the first screw rod 15 is rotated to drive the movable seat 3 and the supporting components 4 to move along the bottom plate 13 until the supporting components 4 and the pipeline arranged on the movable seat 3 are away from the inside of one end of the fixing seat 2.

[0029] The support assembly 4 also includes an outer support ring 41, an inner support ring 42, a mounting plate 43, a U-shaped plate 44, a planetary gear mechanism 45 and a ring sleeve 46; the outer support ring 41, the inner support ring 42 and the ring sleeve 46 are concentrically arranged annular parts, the ring sleeve 46 is located inside the inner support ring 42, the inner support ring 42 is located inside the outer support ring 41, the outer support ring 41 is provided with a plurality of through grooves 411 at intervals along the circumferential direction, and the inner support ring 42 is provided with a plurality of through grooves 421 corresponding to the through grooves 411 at intervals along the circumferential direction, and each through groove 411 is fixedly provided with The mounting plate 43 is provided, and the mounting plate 43 extends into the second through groove 421. A U-shaped plate 44 is fixedly arranged on the side wall of the mounting plate 43. A planetary gear mechanism 45 is installed on the inner wall of the inner support ring 42. The planetary gear mechanism 45 includes a sun gear shaft, planetary gears, a planetary carrier and a ring gear. The planetary carrier is fixedly mounted on the outside of a ring sleeve 46. The sun gear shaft is concentrically arranged with the ring sleeve 46 and is rotatably connected. The ring gear is rotatably arranged in the inner support ring 42. A plurality of planetary gears are arranged, and the plurality of planetary gears are rotatably connected with the planetary carrier. The planetary gears are meshed with the sun gear shaft and the ring gear at the same time.

[0030] The support unit includes a matching gear 47, a rack 48 and an abutment plate 49. A rack 48 is slidably arranged in each of the U-shaped plates 44. A plurality of matching gears 47 are arranged. The plurality of matching gears 47 correspond to the plurality of planetary gears in the planetary gear mechanism 45 one by one and are coaxially fixedly connected. The rack 48 is meshedly connected with the matching gear 47. An abutment plate 49 is fixedly arranged at the end of the rack 48 away from the outer support ring 41. The abutment plates 49 in the plurality of support units can be used in cooperation to support the inner wall of the pipeline. The sun gear shaft is fixedly connected to the output shaft of a connecting motor (not shown in the figure). The connecting motor drives the sun gear shaft to rotate, so that the plurality of planetary gears in the planetary gear mechanism 45 rotate, thereby rotating the matching gears 47 in the plurality of support units, driving the rack 48 to move radially, and adjusting the extension amount of the rack 48 relative to the outer support ring 41, so that the device is suitable for pipelines with various inner diameters.

[0031] The movable assembly 5 comprises a movable plate 51, an arc-shaped member 52 and a support rod 53; side plates 511 are fixedly provided at both ends of the movable plate 51, and the side plates 511 extend downward, and movable rails 512 are fixedly provided horizontally on the opposite sides of the two side plates 511. The movable plate 51 is plugged and slidably connected with the movable grooves 12 provided on both sides of the bottom plate 13 through the movable rails 512 provided on both sides. A support block 513 is fixedly provided in the middle of the lower surface of the movable plate 51, and a nut head 2 is fixedly provided in the middle of the support block 513. The support block 513 is threadedly connected with the second screw rod 14 through the nut head 2, and the first screw rod 15 is connected with the support block 513 through penetration; a support rod 53 is vertically fixedly provided at one end of the upper surface of the movable plate 51, and an arc-shaped member 52 is fixedly provided on the upper part of the support rod 53. The arc-shaped member 52 is concentrically arranged with the support assembly 4, and a detection assembly 6 is installed in the middle of the arc-shaped member 52. A movable cavity is opened in the middle of the upper surface of the movable plate 51, and a positioning unit is installed in the movable cavity; The positioning unit also includes a rotating rod 55, a toothed member 56, a rotating head 57, a positioning gear 58, a driven bevel gear 59 and an active bevel gear 510; two toothed members 56 are symmetrically arranged at the center, the toothed member 56 includes a slide plate and a toothed plate, the toothed plate and the slide plate are arranged opposite to each other, a positioning gear 58 is rotatably arranged in the middle of the moving cavity on the moving plate 51, and the toothed plates on the two toothed members 56 are meshed and connected with the positioning gear 58 at the same time, the toothed plate of one toothed member 56 is slidably matched with the inner side wall of the slide plate of the other toothed member 56, and a rotating head 57 is fixedly arranged on the upper ends of the ends of the two toothed members 56 that are away from each other, and the two rotating heads 57 are rotatably connected with the lower ends of the two rotating rods 55 respectively, and the cross-section of the positioning plate 54 is arc-shaped, and the two ends of the lower surface of the positioning plate 54 are They are respectively rotatably connected to the upper ends of the two rotating rods 55; a driven bevel gear 59 is coaxially arranged above the positioning gear 58, and the positioning gear 58 and the driven bevel gear 59 rotate synchronously. A positioning motor (not shown in the figure) is fixedly arranged on the upper surface of the movable plate 51, and an active bevel gear 510 is fixedly arranged on the output shaft of the positioning motor, and the active bevel gear 510 is meshingly connected with the driven bevel gear 59; when the positioning unit positions the pipeline, the pipeline is moved and transported to the positioning plate 54, and the active bevel gear 510 rotates, driving the driven bevel gear 59 and the positioning gear 58 to rotate, so that the two toothed parts 56 move synchronously, driving the rotating rod 55 to rotate, thereby adjusting the height of the positioning plate 54, so that the pipeline placed on the positioning plate 54 is concentrically arranged with the support assembly 4.

[0032] The detection assembly 6 includes a fixed rod 61, a connecting plate 62, a driving cylinder 63, a matching plate 64, a rotating gear 65 and a rotating plate 66; the fixed rod 61 is fixedly connected to the arc plate 521, a connecting plate 62 is fixedly provided on the side of the fixed rod 61 away from the arc member 52, both ends of the connecting plate 62 are respectively fixedly connected to the fixed ends of the two driving cylinders 63, the telescopic end of the driving cylinder 63 is fixedly connected to the matching plate 64, a rotating plate 66 is rotatably provided on the side of the matching plate 64 away from the driving cylinder 63, a rotating shaft 662 is fixedly provided in the middle of the rotating plate 66, a connecting hole 642 is penetrated in the middle of the matching plate 64, the rotating shaft 662 passes through the connecting hole 642 and is rotatably connected to the matching plate 64; two arc grooves 641 are penetrated on the matching plate 64, the centers of the two arc grooves 641 coincide, and the two arc grooves 641 correspond to The central angles of the circles are both 90°, and the two arc grooves 641 are arranged symmetrically with the center. A rotating shaft 643 is rotatably arranged on the matching plate 64. The end of the rotating shaft 643 away from the driving cylinder 63 is fixedly connected to the rotating gear 65, and the rotating gear 65 is driven by a reversing motor (not shown in the figure); an arc rack 661 is fixedly arranged on the middle part of one side of the rotating plate 66 facing the matching plate 64, and the arc rack 661 is meshed and connected with the rotating gear 65. Slide bars 663 are fixedly arranged on both sides of the rotating plate 66, and the two slide bars 663 pass through the arc grooves 641 on the two matching plates 64 respectively. The spacer fixedly arranged at the upper end of the slide bar 663 can abut against the upper surface of the matching plate 64. This arrangement allows the matching plate 64 to adjust the rotation angle of 0-90° each time, so that the device can adapt to the detection of longitudinal weld quality and annular weld quality.

[0033] The detection assembly 6 also includes a reciprocating screw 67, a matching rod 68, a matching block 69 and an adjustment unit. Two reciprocating screws 67 are rotatably arranged on the side of the rotating plate 66 away from the matching plate 64. The reciprocating screw 67 is provided with two thread grooves with the same pitch and opposite rotation direction, and the two ends of the thread groove are connected by a transition curve. The reciprocating screw 67 is connected by a servo motor (not shown in the figure); a matching rod 68 is fixedly arranged above the reciprocating screw 67, and the reciprocating screw 67 is matched and connected with one end of the matching block 69, and the other end of the matching block 69 is slidably sleeved on the matching rod 68. A moving screw 610 is vertically rotatably arranged at the lower part of the side of the matching block 69 away from the reciprocating screw 67, and the moving screw 610 is driven by a reciprocating motor (not shown in the figure). A group of adjustment units are respectively installed on the two moving screws 610, one of which is installed above the corresponding moving screw 610, and the other is installed below the corresponding moving screw 610. The two matching blocks 69 move toward or in the opposite direction under the action of the two reciprocating screws 67 to realize the flaw detection on both sides of the weld at the same time; the adjustment unit includes a support rod 611, an auxiliary rod 612 and a rotating block 613; the support rod 611 is threadedly connected to the movable screw 610 through a fixed nut block, one end of the support rod 611 is vertically fixedly provided with a vertical rod 6111 outwardly, and the other end of the support rod 611 is rotatably connected to the rotating block 613, the vertical rod 6111 is rotatably connected to one end of the auxiliary rod 612, and the other end of the auxiliary rod 612 is fixedly connected to the inclined surface provided on the rotating block 613 through a fixed connecting spring 6121, and an ultrasonic probe 9 is installed on the side of the rotating block 613 away from the support rod 611, and the ultrasonic probe 9 transmits ultrasonic waves and receives reflected signals, which are converted into images or data for analysis by the operator, and the two adjustment units are arranged up and down to avoid interference between the two ultrasonic probes 9 during the detection process.

[0034] The pipeline weld flaw detection device also includes a control unit (not shown in the figure), which can be electrically connected to the servo motor, the reversing motor, the positioning motor, the rotating motor, the moving motor, the driving motor and the reciprocating motor, and the control unit is electrically connected to the driving cylinder 63 and transmits an adjustment signal thereto.

[0035] A camera 7 is fixedly arranged on one side of the rotating plate 66 away from the matching plate 64, and the camera 7 is located in the middle of the rotating plate 66. The camera 7 can take an image of the pipeline weld and transmit it to the control unit. The control unit receives and analyzes the image information, determines whether the weld is arranged circumferentially or longitudinally along the pipeline, and thus transmits a rotation adjustment signal to the reversing motor. When the ultrasonic probe 9 detects, the center of the camera 7 is aligned with the center of the pipeline weld. Nozzles 8 are fixedly arranged on both sides of the camera 7. A coupling agent box (not shown in the figure) is also fixedly arranged on the movable plate 51. The coupling agent box is connected to the nozzle 8, and the nozzle 8 is electrically connected to the control unit. The control unit can control the nozzle 8 to spray the coupling agent onto the weld and the pipeline surface to facilitate subsequent ultrasonic flaw detection operations.

[0036] The pipeline weld flaw detection device also includes a scraping mechanism 614, which is arranged between the nozzle 8 and the adjustment unit. The scraping mechanism 614 is symmetrically arranged in two groups, and the two groups of scraping mechanisms 614 are both installed on the rotating plate 66. Each group of scraping mechanisms 614 includes a telescopic rod 6141, a coating block 6142 and a rotating telescopic cylinder 6143. One end of the telescopic rod 6141 is rotatably connected to the matching block 69, and the other end of the telescopic rod 6141 is rotatably connected to the coating block 6142. A tensioning spring is arranged in the telescopic rod 6141, and the coating block 6142 is made of soft material. The two groups of scraping mechanisms 614 are respectively matched with the two nozzles 8, so that the coupling agent sprayed by the nozzle 8 on the pipeline weld and the pipeline surface can be scraped evenly. The fixed end of the rotating telescopic cylinder 6143 is rotatably connected to the matching block 69, and the telescopic end is rotatably connected to the side of the fixed end of the telescopic rod 6141. The rotating telescopic cylinder 6143 is electrically connected to the control unit; When the scraping mechanism 614 is scraping the coupling agent on both sides of the annular weld, adjust the reciprocating screw 67 so that the matching block 69 drives the scraping mechanism 614 to move to a suitable position. At the same time, adjust the moving screw 610 so that the adjustment unit moves along the moving screw 610 to one end close to the rotating plate 66. Adjust the rotating telescopic cylinder 6143 to drive the telescopic rod 6141 to rotate to a suitable position. Adjust the driving cylinder 63 so that the scraping mechanism 614 is close to the weld. The coating block 6142 contacts the side wall of the pipeline. At the same time, the tension spring is compressed. Under the action of the elastic force, the coating block 6142 fits the pipeline. The reciprocating screw 67 drives the scraping mechanism 614 to move so that the coating block 6142 scrapes the coupling agent. The ultrasonic probe 9 cooperates with the flaw detector at the back. Detection; When the scraping mechanism 614 scrapes the coupling agent on both sides of the longitudinal weld, adjust the matching block 69 and the adjustment unit to move to the appropriate position, adjust the rotating telescopic cylinder 6143 to drive the telescopic rod 6141 to rotate to the appropriate position, adjust the driving cylinder 63, so that the scraping mechanism 614 is close to the weld, so that one end of the coating block 6142 abuts against the outer wall of the pipeline, and the telescopic end of the driving cylinder 63 continues to extend, driving the coating block 6142 to rotate until it is tangent to the outer wall of the pipeline, and the reciprocating screw 67 drives the scraping mechanism 614 to move, so that the coating block 6142 is scraped with the coupling agent, and at the same time the tensioning spring is compressed. Under the action of the elastic force of the tensioning spring, the coating block 6142 is attached to the pipeline and the coupling agent is scraped, and the ultrasonic probe 9 cooperates with the flaw detection at the back.

[0037] A pipeline weld flaw detection method, applied to the above-mentioned pipeline weld flaw detection device, comprises the following steps: S1: Adjust the position of the movable seat 3, adjust the extension amount of the abutment plates 49 on the two sets of support components 4, place the detected pipe on the positioning plate 54, and adjust the height of the positioning plate 54; Move the movable seat 3 to the end of the bottom plate 13 away from the fixed seat 2, adjust the two groups of support components 4 to make the extension of the rack 48 the shortest, and transport the pipeline from the side of the device away from the arc-shaped member 52 to the positioning plate 54; control the active bevel gear 510 to rotate, drive the driven bevel gear 59 and the positioning gear 58 to rotate, so that the two toothed parts 56 move, drive the rotating rod 55 to rotate, adjust the height of the positioning plate 54, and set the pipeline concentrically with the support component 4.

[0038] S2: Adjust the position of the movable seat 3 so that the support assembly 4 installed on the movable seat 3 contacts the inner wall of one end of the pipeline to be detected; adjust the movable seat 3 and the moving assembly 5 at the same time so that the inner wall of the other end of the pipeline to be detected contacts the support assembly 4 installed on the fixed seat 2, and adjust the positioning plate 54 to fall back and reset; Specifically, the first screw rod 15 is adjusted to rotate, driving the movable seat 3 and the support assembly 4 to move along the bottom plate 13, until the support assembly 4 rotatably arranged on the movable seat 3 moves to the inside of one end of the pipeline to be detected; the planetary gear mechanism 45 in the support assembly 4 connected to the movable seat 3 is controlled to move, driving the matching gears 47 in the multiple support units to rotate synchronously, so that the multiple racks 48 move synchronously in the radial direction, and adjusting the extension amount of the racks 48 relative to the outer support ring 41, so that the abutment plates 49 in the multiple support units abut against the inner wall of the pipeline; At the same time, the second screw rod 14 and the first screw rod 15 are adjusted to rotate, so that the moving assembly 5, the detection assembly 6, the pipeline movable seat 3 and the connected support assembly 4 are simultaneously moved in the direction close to the fixed seat 2, until the support assembly 4 set on the fixed seat 2 is located inside the other end of the pipeline to be detected, and the support assembly 4 is adjusted to cooperate with the inner wall support of the pipeline; the active bevel gear 510 is rotated in the reverse direction to make the positioning plate 54 fall back and reset.

[0039] S3: The moving component 5 moves, and the supporting component 4 rotates at the same time, so that the detection component 6 is close to the weld, and the camera 7 shoots the weld of the pipeline to be detected to determine the direction of the weld; if the weld is longitudinal, the detection component 6 is rotated so that the two ultrasonic probes 9 are located on both sides of the longitudinal weld, the supporting component 4 is adjusted to align the camera 7 with the weld, and the process goes to S4; if the weld is annular, the detection component 6 is rotated so that the two ultrasonic probes 9 are located on both sides of the annular weld, the moving component 5 is adjusted to align the camera 7 with the weld, and the process goes to S5.

[0040] S4: Move the moving component 5 close to the fixed seat 2 or the movable seat 3, adjust the detection component 6 so that the scraping mechanism 614 is close to the pipeline to be detected, and the nozzle 8 sprays the coupling agent along both sides of the longitudinal weld; adjust the scraping mechanism 614, adjust the adjustment unit, slowly move the moving component 5 to the other end of the pipeline, and at the same time, the scraping mechanism 614 scrapes the coupling agent on both sides of the longitudinal weld, and the ultrasonic probe 9 detects the quality of the longitudinal weld; Move the moving assembly 5 close to the fixed seat 2 or the movable seat 3, adjust the driving cylinder 63, extend the telescopic end of the driving cylinder 63, drive the scraping mechanism 614 close to the pipeline, adjust the two sets of supporting assemblies 4 to drive the pipeline to rotate, and spray the coupling agent on the weld and the pipeline surface; The two reciprocating screws 67 rotate to drive the two adjustment units to move synchronously in the opposite direction to the appropriate starting position, and then adjust the moving screw 610 to make the adjustment unit move toward the end of the moving screw 610 away from the rotating plate 66, driving the two ultrasonic probes 9 to contact the outer wall of the pipeline; rotate the reciprocating screw 67 to make the two adjustment units move back and forth toward or in the opposite direction, and at the same time, the scraping mechanism 614 scrapes the coupling agent on both sides of the longitudinal weld, and the ultrasonic probe 9 cooperates with the flaw detection at the back, slowly moves the moving component 5 to the other end of the pipeline, and the two groups of ultrasonic probes 9 respectively detect both sides of the weld until the detection is completed.

[0041] S5: Adjust the detection component 6 so that the scraping mechanism 614 is close to the pipeline to be detected, and the nozzle 8 sprays the coupling agent along the annular weld; adjust the scraping mechanism 614, adjust the adjustment unit, and the support component 4 drives the pipeline to rotate. At the same time, the scraping mechanism 614 scrapes the coupling agent on both sides of the annular weld, and the ultrasonic probe 9 detects the quality of the annular weld; Adjust the drive cylinder 63 to drive the scraping mechanism 614 close to the pipeline, adjust the two sets of support components 4 to drive the pipeline to rotate, and spray the coupling agent on the weld and the pipeline surface; After rotating the reciprocating screw 67 to drive the two adjustment units and the ultrasonic probe 9 to move synchronously in the opposite direction to the appropriate starting position, adjust the movable screw 610 so that the adjustment unit moves toward the end of the movable screw 610 away from the rotating plate 66, driving the ultrasonic probe 9 to contact the outer wall of the pipeline; rotate the reciprocating screw 67 to make the two adjustment units move back and forth toward or in the opposite direction, and at the same time, the scraping mechanism 614 scrapes the coupling agent on both sides of the annular weld, and the ultrasonic probe 9 cooperates with the flaw detection at the back, and at the same time adjusts the two groups of support components 4 to drive the pipeline to rotate, and the two groups of ultrasonic probes 9 respectively detect both sides of the weld until the detection is completed.

Claims

1. A pipeline weld flaw detection device, characterized in that: The invention comprises a base (1), a fixed base (2), a movable base (3), a supporting assembly (4), a movable assembly (5), a detection assembly (6) and an ultrasonic probe (9); the base (1) comprises a bottom plate (13), one end of which is fixedly provided with a fixed base (2), the bottom plate (13) having a movable base (3) and a movable assembly (5) movably provided on the bottom plate (13), the movable assembly (5) being located between the fixed base (2) and the movable base (3), the movable assembly (5) being movably provided with a positioning unit, the positioning unit comprising a positioning plate (54), a pipe being placed on the positioning plate (54), and the positioning plate (54) being arranged by means of teeth The lifting is achieved by gear rack transmission; a support assembly (4) is rotatably provided at one end of the fixed seat (2) and the movable seat (3) close to each other, and the two groups of support assemblies (4) are concentrically arranged; the support assembly (4) comprises a plurality of support units arranged at intervals along the circumferential direction, and the plurality of support units cooperate to support the inner wall of the pipe; a detection assembly (6) is installed in the middle of the movable assembly (5), and the detection assembly (6) comprises a rotatably arranged rotating plate (66), and adjustment units are movably provided at both ends of the rotating plate (66), and an ultrasonic probe (9) is provided on the adjustment unit, and the adjustment unit achieves reciprocating movement through a screw nut mechanism.

2. A pipeline weld flaw detection device according to claim 1, characterized in that: The rotating plate (66) is rotatably provided with two reciprocating screws (67), and the two reciprocating screws (67) are movably connected with a matching block (69), and the lower parts of the two matching blocks (69) are vertically rotatably provided with a moving screw (610), and the two moving screws (610) are respectively matched and connected with two adjustment units, one of which is located above the corresponding moving screw (610), and the other is located below the corresponding moving screw (610).

3. A pipeline weld flaw detection device according to claim 2, characterized in that: The adjustment unit comprises a support rod (611), an auxiliary rod (612) and a rotating block (613); the support rod (611) is threadedly connected to the movable screw rod (610) via a nut block; one end of the support rod (611) extends vertically outward and is rotationally connected to one end of the auxiliary rod (612); the other end of the support rod (611) is rotationally connected to the rotating block (613); the other end of the auxiliary rod (612) is fixedly connected to an inclined surface provided on the rotating block (613) via a fixedly arranged connecting spring (6121); and an ultrasonic probe (9) is installed on a side of the rotating block (613) away from the support rod (611).

4. A pipeline weld flaw detection device according to claim 1, characterized in that: The moving assembly (5) comprises a moving plate (51) and an arc-shaped member (52); the arc-shaped member (52) is vertically fixedly arranged at one end of the upper surface of the moving plate (51); the arc-shaped member (52) is arranged concentrically with the support assembly (4); a detection assembly (6) is installed in the middle of the arc-shaped plate (521); a moving cavity is opened in the middle of the upper surface of the moving plate (51), and a positioning unit is installed in the moving cavity.

5. A pipeline weld flaw detection device according to claim 1, characterized in that: The positioning unit further comprises a rotating rod (55), a toothed member (56) and a positioning gear (58); the two ends of the lower surface of the positioning plate (54) are respectively rotatably connected to the rotating rods (55); two toothed members (56) are centrally symmetrically arranged; a positioning gear (58) is rotatably arranged in the middle of the movable cavity; the two toothed members (56) are simultaneously matched with the positioning gear (58); and the ends of the two toothed members (56) that are away from each other are respectively rotatably connected to the lower ends of the two rotating rods (55).

6. A pipeline weld flaw detection device according to claim 4, characterized in that: The detection assembly (6) further comprises a fixing rod (61) and a matching plate (64); one end of the fixing rod (61) is fixedly connected to the arc-shaped member (52); a side of the fixing rod (61) away from the arc-shaped member (52) is connected to the matching plate (64) via a telescopic end of a driving cylinder (63); two arc-shaped grooves (641) are provided through the matching plate (64); a rotating gear (65) is rotatably provided on the matching plate (64); an arc-shaped rack (661) is fixedly provided at the middle of one side of the rotating plate (66); the arc-shaped rack (661) is meshedly connected to the rotating gear (65); and sliding rods (663) fixedly provided on both sides of the rotating plate (66) are respectively movably connected to the two arc-shaped grooves (641) on the matching plate (64).

7. A pipeline weld flaw detection device according to claim 6, characterized in that: The support assembly (4) further comprises an outer support ring (41), an inner support ring (42) and a ring sleeve (46) which are arranged concentrically; the outer support ring (41), the inner support ring (42) and the ring sleeve (46) are fixedly connected in sequence; a planetary gear mechanism (45) is installed on the inner wall of the inner support ring (42); a plurality of support units are movably arranged along the circumference of the outer support ring (41); the support units comprise a matching gear (47), a rack (48) and an abutment plate (49); the matching gear (47) in the plurality of support units is driven by the planetary gear mechanism (45) to achieve synchronous rotation; the rack (48) is meshingly connected with the matching gear (47); and an abutment plate (49) is fixedly arranged at the end of the rack (48) away from the outer support ring (41).

8. A pipeline weld flaw detection device according to claim 7, characterized in that: It also comprises a control unit, a camera (7) and a nozzle (8), wherein the camera (7) is fixedly arranged in the middle of the rotating plate (66), and nozzles (8) are fixedly arranged on both sides of the camera (7); the control unit is electrically connected to the driving cylinder (63).

9. A pipeline weld flaw detection device according to claim 8, characterized in that: The detection assembly (6) further comprises two scraping mechanisms (614), the two scraping mechanisms (614) being respectively arranged on two matching blocks (69), and the scraping mechanisms (614) being located between the adjustment unit and the nozzle (8), the scraping mechanisms (614) comprising a telescopic rod (6141) and a rotating telescopic cylinder (6143) which are respectively rotatably arranged on the matching blocks (69), the telescopic rod (6141) being rotatably connected to a coating block (6142), the telescopic end of the rotating telescopic cylinder (6143) being rotatably connected to a side portion of the telescopic rod (6141), a tensioning spring being arranged in the telescopic rod (6141), and the rotating telescopic cylinder (6143) being electrically connected to a control unit.

10. A pipeline weld flaw detection method, applied to a pipeline weld flaw detection device as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1: adjusting the position of the movable seat (3), adjusting the extension amount of the abutment plates (49) on the two sets of support assemblies (4), placing the pipeline to be tested on the positioning plate (54), and adjusting the height of the positioning plate (54); S2: adjusting the position of the movable seat (3) so that the support assembly (4) mounted on the movable seat (3) contacts the inner wall of one end of the pipeline to be inspected; adjusting the movable seat (3) and the movable assembly (5) at the same time so that the inner wall of the other end of the pipeline to be inspected contacts the support assembly (4) mounted on the fixed seat (2), and adjusting the positioning plate (54) to fall back and reset; S3: the moving component (5) moves, and the supporting component (4) rotates in coordination, so that the detection component (6) is close to the weld, and the camera (7) photographs the weld of the pipeline to be detected to determine the direction of the weld; if the weld is longitudinal, the detection component (6) is rotated so that the two ultrasonic probes (9) are located on both sides of the longitudinal weld, the supporting component (4) is adjusted so that the camera (7) is aligned with the weld, and the process goes to S4; if the weld is annular, the detection component (6) is rotated so that the two ultrasonic probes (9) are located on both sides of the annular weld, the moving component (5) is adjusted so that the camera (7) is aligned with the weld, and the process goes to S5; S4: moving the moving component (5) close to the fixed seat (2) or the movable seat (3), adjusting the detection component (6) so that the scraping mechanism (614) is close to the pipeline to be detected, and the nozzle (8) sprays the coupling agent along both sides of the longitudinal weld; adjusting the scraping mechanism (614), adjusting the adjustment unit, slowly moving the moving component (5) to the other end of the pipeline, and at the same time, the scraping mechanism (614) scrapes the coupling agent on both sides of the longitudinal weld, and the ultrasonic probe (9) detects the quality of the longitudinal weld; S5: the detection component (6) is adjusted so that the scraping mechanism (614) is close to the pipeline to be detected, the nozzle (8) sprays the coupling agent along both sides of the annular weld, the scraping mechanism (614) is adjusted, the adjustment unit is adjusted, the support component (4) drives the pipeline to rotate, and the scraping mechanism (614) scrapes the coupling agent on both sides of the annular weld at the same time, and the ultrasonic probe (9) detects the quality of the annular weld.

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