Wall thickness pipeline welding seam detection device based on ultrasonic phased array

Abstract

The invention relates to a wall thickness pipeline welding seam detection device based on an ultrasonic phased array, and belongs to the technical field of pipeline welding seam detection. The device comprises a supporting assembly, a split mounting type assembling ring is arranged on the supporting assembly, a linear driving part is arranged on the assembling ring in the radial direction, an ultrasonic phased array assembly is arranged at the output end of the linear driving part, and a rotary driving part used for driving the assembling ring to rotate around the wall thickness pipeline is arranged on the supporting assembly. The supporting assembly comprises a set of first supporting wheels and a set of second supporting wheels. The linear driving piece and the ultrasonic phased array assembly are installed through the split mounting type assembly ring, weld joint detection can be conducted around a wall thickness pipeline on site, the first supporting wheel and the second supporting wheel are located below the axis of the assembly ring when a horizontal pipeline is detected, and the first supporting wheel and the second supporting wheel are symmetrically arranged on the two sides of the axis of the assembly ring when a vertical pipeline is detected; the adaptability of the welding seam detection device to the installation direction and size of the to-be-detected pipeline is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipeline weld detection, and particularly relates to a wall-thickness pipeline weld detection device based on ultrasonic phased array. Background Art

[0002] As an important means of non-destructive testing, ultrasonic phased array technology has been widely used in the detection of wall-thickness pipeline welds. The existing detection process generally includes the following steps. First, an ultrasonic coupling agent is applied to the area to be tested near the weld. Subsequently, the operator needs to install an ultrasonic phased array probe and a scanning frame on the pipeline according to the direction and size of the pipeline. Then, the scanning frame is moved circumferentially along the pipeline, and the weld is detected by testing the phased array probe, which can achieve a full-range scan of the weld. However, there are still some limitations in the existing weld detection devices in terms of the adjustment of the support structure, the positioning accuracy of the probe, and the control of the uniformity of the coupling agent.

[0003] The main deficiencies of the current weld detection devices are reflected in the following aspects: First, it is difficult for the weld detection device to quickly adapt to pipelines with different installation directions and different sizes, and the device needs to be frequently disassembled and re-assembled, resulting in low detection efficiency. Second, the probe drive mechanism lacks a buffer and real-time pressure feedback mechanism, which is prone to damage the probe due to mechanical impact. At the same time, the coupling agent is easily scraped off during contact, affecting the detection stability. Third, the spraying and leveling of the coupling agent highly rely on manual operation, which is not only time-consuming and laborious, but also difficult to ensure the consistency of the coating thickness, thereby reducing the detection accuracy. These problems restrict the application of ultrasonic phased array technology in wall-thickness pipelines. Summary of the Invention

[0004] The purpose of the present invention is to provide a wall-thickness pipeline weld detection device based on ultrasonic phased array to solve the above problems.

[0005] The present invention realizes the above purpose through the following technical solutions:

[0006] A wall-thickness pipeline weld detection device based on ultrasonic phased array, which is used to detect the welds of wall-thickness pipelines with different installation directions. The wall-thickness pipeline weld detection device includes a support assembly. A split-type assembly ring is provided on the support assembly. A linear drive is provided on the assembly ring along the radial direction. The output end of the linear drive is provided with an ultrasonic phased array assembly. A rotary drive for driving the assembly ring to rotate around the wall-thickness pipeline is provided on the support assembly. The support assembly includes a set of support wheels one and a set of support wheels two for supporting the assembly ring. When the wall-thickness pipeline is a horizontal pipeline, the set of support wheels one and the set of support wheels two are both located below the axis of the assembly ring. When the wall-thickness pipeline is a vertical pipeline, the set of support wheels one and the set of support wheels two are symmetrically arranged on both sides of the axis of the assembly ring.

[0007] As a further optimized solution of the present invention, the support assembly further includes a first mounting plate for mounting the first support wheel, a second mounting plate for mounting the second support wheel, a connecting plate for connecting the first mounting plate and the second mounting plate, and a bottom plate hinged below the connecting plate, and an angle adjusting member is provided between the bottom plate and the connecting plate.

[0008] As a further optimized solution of the present invention, the assembly ring includes two oppositely arranged first semi-circular plates, a semi-circular groove body is formed on the outer arc surface of the first semi-circular plate, and a semi-tooth ring is fixedly provided on the inner circumference of the first semi-circular plate, and the semi-circular groove body is in rolling cooperation with the first support wheel and the second support wheel; the rotation driving member includes a first gear meshing with the semi-tooth ring, and a gear driving member with an output end connected to the first gear.

[0009] As a further optimized solution of the present invention, a pair of second semi-circular plates are fixedly provided on the inner side of each first semi-circular plate. Convex blocks are provided at the ends of one pair of second semi-circular plates, and notches corresponding to the convex blocks are provided at the ends of the other pair of second semi-circular plates. A connecting block is provided between the two first semi-circular plates, and a stop block corresponding to the connecting block is provided on the first semi-circular plate. The connecting block connects the two first semi-circular plates through a threaded fastener, and the convex block connects the two pairs of second semi-circular plates through a threaded fastener.

[0010] As a further optimized solution of the present invention, the device further includes a positioning member. A positioning cylinder is fixedly provided on one of the first semi-circular plates, and a jack is provided on the first mounting plate. When the first mounting plate is turned over, the positioning member is embedded in the jack and the positioning cylinder to position the first mounting plate and the first semi-circular plate.

[0011] As a further optimized solution of the present invention, the linear driving member includes a first screw motor fixed on the assembly ring, a first buffer bracket provided on the output shaft of the first screw motor, a first support column fixed at the end of the first buffer bracket, and a first alignment roller provided at the end of the first support column.

[0012] As a further optimized solution of the present invention, the ultrasonic phased array assembly includes a mounting column fixed at the end of the first buffer bracket, and an ultrasonic phased array probe provided at the end of the mounting column. The distance between the ultrasonic phased array probe and the axis of the assembly ring is greater than the distance between the first alignment roller and the axis of the assembly ring.

[0013] As a further optimized solution of the present invention, the first buffer bracket includes a first sleeve threadedly connected to the output shaft of the first screw motor, a first mounting frame slidably connected to the inner wall of the first sleeve, and a first pressure sensor fixed at one end inside the first sleeve. The first pressure sensor is connected to the first mounting frame through a spring.

[0014] As a further optimized solution of the present invention, a couplant spraying assembly and a scraping assembly are provided on the assembly ring, and the couplant spraying assembly is composed of a first telescopic assembly and an injection assembly fixedly arranged at the output end of the first telescopic assembly.

[0015] As a further optimized solution of the present invention, the injection assembly includes a syringe, a mounting cylinder arranged on the barrel of the syringe, an insertion block arranged at the end of the mounting cylinder, and a piston rod driving member arranged between the mounting cylinder and the piston rod of the syringe, and the insertion block is inserted into the output end of the first telescopic assembly.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1) In the present invention, the linear driving member and the ultrasonic phased array assembly are installed through the assembled assembly ring, and the weld detection device can perform weld detection around the on-site wall-thickness pipeline. When the wall-thickness pipeline is a horizontal pipeline, the first support wheel and the second support wheel are placed below the axis of the assembly ring to support the assembly ring. When the wall-thickness pipeline is a vertical pipeline, the first support wheel and the second support wheel are symmetrically arranged on both sides of the axis of the assembly ring to support the assembly ring. This device can adapt to the axial direction and outer wall size of the on-site pipeline, improving the adaptability of the weld detection device to the pipeline to be detected;

[0018] 2) In the process of flipping the first assembly plate of the present invention, the assembly ring is supported by the positioning member. In this process, only the positioning member needs to be inserted and pulled out, and the positioning member is tightened and removed. In the process of the weld detection device adapting to horizontal pipelines and vertical pipelines, the operation of disassembling and reinstalling the assembly ring, the rotary driving member and the support assembly is omitted, improving the operation convenience of the device;

[0019] 3) When the linear driving member adjusts the position of the ultrasonic phased array probe in the present invention, buffering is performed through the buffer bracket, and the abutting condition between the alignment roller and the wall-thickness pipeline is detected by the pressure sensor in cooperation with the sleeve, the assembly frame and the support column. After the alignment roller abuts against the wall-thickness pipeline, the linear driving of the ultrasonic phased array probe and the alignment roller is stopped. And because when the alignment roller abuts against the wall-thickness pipeline, there is a certain distance between the ultrasonic phased array probe and the outer wall of the wall-thickness pipeline, which not only avoids the damage of the probe due to impact, but also avoids the situation that the couplant smeared on the wall-thickness pipeline falls off due to impact;

[0020] 4) In the present invention, the ultrasonic phased array assembly is driven by the linear driving member on the assembly ring to comprehensively detect the weld, and the couplant is sprayed on the area to be detected near the pipeline weld through the couplant spraying assembly, and the thickness of the couplant on the area to be detected is made consistent by the scraping assembly, saving manpower and improving the accuracy of ultrasonic phased array detection of the weld. Description of the Drawings

[0021] Figure 1It is a schematic diagram of the working state when the present invention detects a horizontal pipeline in the first embodiment;

[0022] Figure 2 It is a schematic diagram of the working state when the present invention detects a vertical pipeline in the first embodiment;

[0023] Figure 3 It is a schematic diagram of the working state of the support component when the present invention detects a horizontal pipeline;

[0024] Figure 4 It is a schematic diagram of the working state of the support component when the present invention detects a vertical pipeline;

[0025] Figure 5 It is a schematic diagram of the split structure of the assembly ring in the first embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of two assembly plates of the present invention;

[0027] Figure 7 It is a schematic diagram of the internal structure of the first buffer bracket of the present invention;

[0028] Figure 8 It is a schematic diagram of the working state when the present invention detects a horizontal pipeline in the second embodiment;

[0029] Figure 9 It is a schematic diagram of the working state when the present invention detects a vertical pipeline in the second embodiment;

[0030] Figure 10 It is a schematic diagram of the internal structure of the second buffer bracket of the present invention;

[0031] Figure 11 It is Figure 10 The enlarged view of part A in

[0032] In the figure: 1, support assembly; 2, assembly ring; 3, linear drive; 4, ultrasonic phased array assembly; 5, rotary drive; 6, coupling agent spraying assembly; 7, scraping assembly; 8, positioning member; 11, first support wheel; 12, second support wheel; 13, first assembly plate; 14, second assembly plate; 15, connecting plate; 16, bottom plate; 17, angle adjusting member; 18, jack; 19, mounting block; 21, first semi-circular plate; 22, semi-circular groove body; 23, semi-gear ring; 24, second semi-circular plate; 25, convex block; 26, connecting block; 27, stop block; 28, positioning cylinder; 31, first lead screw motor; 32, first support column; 33, first alignment roller; 34, first sleeve; 35, first assembly frame; 36, first pressure sensor; 41, mounting column; 42, ultrasonic phased array probe; 51, first gear; 52, first motor; 53, worm; 54, worm gear; 55, encoder; 61, first telescopic assembly; 62, injection assembly; 611, second lead screw motor; 612, second support column; 613, second alignment roller; 614, second sleeve; 615, second assembly frame; 616, second pressure sensor; 617, slot; 618, card slot; 621, syringe; 622, mounting cylinder; 623, insertion block; 624, clamping block; 625, partition; 626, rotating shaft; 627, second motor; 628, second gear; 629, rack; T, wall thickness pipeline. Specific embodiments

[0033] The following further describes the present application in detail with reference to the accompanying drawings. It is necessary to point out here that the following specific embodiments are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0034] First embodiment

[0035] As Figures 1-4 shown, this embodiment relates to a wall thickness pipeline weld detection device based on ultrasonic phased array, which is used to detect the welds of wall thickness pipelines in different installation directions. The wall thickness pipeline weld detection device includes a support assembly 1 and a split-type assembly ring 2 lapped on the support assembly 1, and the assembly ring 2 is assembled by two semi-circular structures. The assembly ring 2 is provided with a linear drive 3 in the radial direction, and the output end of the linear drive 3 is provided with an ultrasonic phased array assembly 4. The support assembly 1 is provided with a rotary drive 5 for driving the assembly ring 2 to rotate around the wall thickness pipeline T. In this embodiment, both the linear drive 3 and the ultrasonic phased array assembly 4 are provided with two.

[0036] Please refer to Figure 3 and Figure 4, the support assembly 1 includes a set of first support wheels 11 for supporting the assembly ring 2 and a set of second support wheels 12. The support assembly 1 further includes a first assembly plate 13 for mounting the first support wheels 11, a second assembly plate 14 for mounting the second support wheels 12, and a connecting plate 15 for connecting the first assembly plate 13 and the second assembly plate 14. In this embodiment, there are two first support wheels 11 on the first assembly plate 13 and two second support wheels 12 on the second assembly plate 14. When the thick-walled pipe T is a horizontal pipe, a set of first support wheels 11 and a set of second support wheels 12 are both located below the axis of the assembly ring 2; when the thick-walled pipe T is a vertical pipe, a set of first support wheels 11 and a set of second support wheels 12 are symmetrically arranged on both sides of the axis of the assembly ring 2. At this time, the first support wheels 11 and the second support wheels 12 support the assembly ring 2 at the top of the assembly ring 2, and the bottom of the assembly ring 2 is suspended.

[0037] During the weld inspection of the thick-walled pipe, the assembly ring 2 is sleeved on the thick-walled pipe T, and the first support wheels 11 and the second support wheels 12 of the support assembly 1 are used to support and limit the assembly ring 2. A coupling agent with a certain viscosity is applied to the ultrasonic inspection area near the weld of the thick-walled pipe T. The ultrasonic phased array assembly 4 is linearly driven by the linear driving member 3. When the linear driving member 3 abuts against the thick-walled pipe T, the ultrasonic phased array assembly 4 approaches the thick-walled pipe T and comes into contact with the coupling agent. At this time, the ultrasonic phased array assembly 4 is used to inspect the weld on the thick-walled pipe T. At the same time, the rotary driving member 5 rotates the assembly ring 2, so that the ultrasonic phased array assembly 4 rotates around the thick-walled pipe T, thereby comprehensively inspecting the weld of the thick-walled pipe T. The ultrasonic phased array inspection of the weld is common knowledge in the art, so it will not be elaborated too much.

[0038] In addition, the support assembly 1 further includes a bottom plate 16 hinged below the connecting plate 15. An angle adjusting member 17 is provided between the bottom plate 16 and the connecting plate 15. The angle adjusting member 17 is preferably a hydraulic cylinder, and both ends of the hydraulic cylinder are hinged to the bottom plate 16 and the connecting plate 15 respectively. The device further includes a lifting mechanism. The lifting mechanism in this embodiment is preferably a forklift. Four groups of limiting cylinders are provided at the bottom of the bottom plate 16. Both the connecting plate 15 and the bottom plate 16 are telescopic plates. Specifically, the connecting plate 15 is composed of a first sub-plate and a second sub-plate, and a first insertion plate and a second insertion plate. Both ends of the first insertion plate are slidably connected to one side of the first sub-plate and one side of the second sub-plate respectively. Both ends of the second insertion plate are slidably connected to the other side of the first sub-plate and the other side of the second sub-plate respectively. The bottom plate 16 is composed of a third sub-plate and a fourth sub-plate, and a third insertion plate and a fourth insertion plate. Both ends of the third insertion plate are slidably connected to one side of the third sub-plate and one side of the fourth sub-plate respectively. Both ends of the fourth insertion plate are slidably connected to the other side of the third sub-plate and the other side of the fourth sub-plate respectively.

[0039] In this embodiment, the height of the bottom plate 16 is adjusted by a forklift. When the wall-thickness pipeline T is a horizontal pipeline, the first sub-plate and the second sub-plate of the connecting plate 15 are brought closer to each other, and the third sub-plate and the fourth sub-plate of the bottom plate 16 are brought closer to each other. Then, the two forks of the forklift are inserted into two groups of the limiting cylinders, and the forks and the limiting cylinders are fixed to each other by fasteners. When detecting this horizontal pipeline, the first assembly plate 13 and the second assembly plate 14 are horizontally fixed on the connecting plate 15. At this time, both the first supporting wheel 11 and the second supporting wheel 12 are vertically arranged.

[0040] When the wall-thickness pipeline T is a vertical pipeline, the first sub-plate and the second sub-plate of the connecting plate 15 are moved away from each other, and the third sub-plate and the fourth sub-plate of the bottom plate 16 are moved away from each other. Then, the two forks of the forklift are inserted into the other two groups of the limiting cylinders, and the forks and the limiting cylinders are fixed to each other by fasteners. When detecting this vertical pipeline, the first assembly plate 13 and the second assembly plate 14 are vertically fixed on the connecting plate 15. At this time, both the first supporting wheel 11 and the second supporting wheel 12 are horizontally arranged.

[0041] Since a hydraulic cylinder for adjusting the angle of the connecting plate 15 is provided on the bottom plate 16, if there is a certain deformation in the horizontal pipeline and the vertical pipeline, the angle of the connecting plate 15 can also be adjusted by the hydraulic cylinder, so that the axis of the assembly ring 2 is parallel to the axis of the wall-thickness pipeline T to improve the detection accuracy.

[0042] In addition, in some other embodiments, when there is no obvious deformation in the shape of the wall-thickness pipeline T to be measured, the above-mentioned angle adjusting member 17 may not be provided. Moreover, the first assembly plate 13, the second assembly plate 14, the connecting plate 15 and the bottom plate 16 can also be omitted, and the first supporting wheel 11 and the second supporting wheel 12 are fixed on other supporting structures, as long as it is ensured that the bracket parts of the first supporting wheel 11 and the second supporting wheel 12 are firmly fixed when detecting the weld seam.

[0043] As Figures 5-7 shown, the specific structure of the wall-thickness pipeline weld detection device will be described in detail next. The assembly ring 2 of this device includes two semi-circular arc plates 21 arranged oppositely. A semi-circular arc groove 22 is formed on the outer arc surface of the semi-circular arc plate 21, and a semi-toothed ring 23 is fixedly provided at one end of the inner circumference of the semi-circular arc plate 21 in the axial direction. The semi-circular arc groove 22 is in rolling cooperation with the first supporting wheel 11 and the second supporting wheel 12. When the two semi-circular arc plates 21 are spliced together, the two semi-toothed rings 23 are combined into a complete toothed ring. When the wall-thickness pipeline T is a horizontal pipeline, a group of the first supporting wheels 11 is at one end of the semi-circular arc groove 22 in the axial direction, and a group of the second supporting wheels 12 is at the other end of the semi-circular arc groove 22 in the axial direction; when the wall-thickness pipeline T is a vertical pipeline, a group of the first supporting wheels 11 and a group of the second supporting wheels 12 are both at the upper end of the semi-circular arc groove 22 in the axial direction for supporting the assembly ring 2. At this time, the assembly ring 2 is in a suspended state and there is a certain gap between it and the connecting plate 15.

[0044] As shown Figure 3 in FIG. Figure 3 , the rotation driving member 5 includes a first gear 51 that meshes with the half-toothed ring 23, and a gear driving member whose output end is connected to the first gear 51. The gear driving member includes a first motor 52 fixedly arranged on the first assembly plate 13, a worm 53 fixed to the output end of the first motor 52, a worm gear 54 meshingly connected to the upper side of the worm 53, and the first gear 51 is fixedly arranged on one side of the worm gear 54. The rotation driving member 5 drives the worm 53 and the worm gear 54 to rotate through the first motor 52, so that the worm gear 54 drives the first gear 51 to rotate. The first gear 51 meshes with the complete toothed ring formed by the two half-toothed rings 23, and thus can drive the assembly ring 2 and the linear driving member 3 thereon to rotate, so that the ultrasonic phased array assembly 4 performs weld inspection around the wall-thickness pipeline T. In addition, the gear driving member further includes a controller and an encoder 55 fixedly arranged on the first assembly plate 13. The encoder 55 is connected to the worm 53, and the encoder 55 is used to cooperate with the controller to accurately adjust the rotation speed of the first motor 52, so as to accurately control the angular velocity of the ultrasonic phased array assembly 4 and further improve the weld inspection accuracy of the wall-thickness pipeline T.

[0045] A pair of second semi-circular plates 24 are fixedly arranged on the inner side of each first semi-circular plate 21. Among them, bumps 25 are fixedly arranged at the ends of a pair of second semi-circular plates 24, and notches corresponding to the bumps 25 are provided at the ends of the other pair of second semi-circular plates 24. A connecting block 26 is arranged between the two first semi-circular plates 21, and a stopper 27 corresponding to the connecting block 26 is provided on the first semi-circular plate 21. The connecting block 26 connects the two first semi-circular plates 21 through a threaded fastener, and the bump 25 connects the two pairs of second semi-circular plates 24 through a threaded fastener. A plurality of arc-shaped support plates are also fixedly arranged between each pair of second semi-circular plates 24 to improve the overall strength of the assembly ring 2, and through holes are provided on the second semi-circular plates 24. When connecting the two first semi-circular plates 21, the connecting block 26 is placed between the two stoppers 27, and the connecting block 26 is fixedly connected to the two first semi-circular plates 21 through a threaded fastener. When connecting the second semi-circular plates 24, the bump 25 is embedded into the corresponding notch, and the second semi-circular plates 24 on different first semi-circular plates 21 are fixedly connected in pairs through a threaded fastener.

[0046] In addition, the device further includes a positioning member 8, and the positioning member 8 is preferably a rigid positioning column. A positioning cylinder 28 is fixedly arranged on one of the first semi-circular plates 21, and a jack 18 is provided on the first assembly plate 13. When the first assembly plate 13 is turned over, the positioning member 8 is embedded into the jack 18 and the positioning cylinder 28. At this time, the first semi-circular plate 21 provided with the positioning cylinder 28, the positioning member 8 and the first assembly plate 13 are fixed to each other. During the process of turning over the first assembly plate 13, the positioning member 8 provides support for the assembly ring 2, saving the operation of disassembling and reinstalling the assembly ring 2, the rotation driving member 5 and the support assembly 1. During the process of testing the weld, the positioning member 8 is pulled out from the positioning cylinder 28 and the jack 18.

[0047] In addition, mounting blocks 19 are fixedly arranged on both the first assembly plate 13 and the second assembly plate 14. At both ends of one side of the first assembly plate 13, there are mounting blocks 19, and at both ends of both sides of the second assembly plate 14, there are mounting blocks 19. As Figure 6 well as Figures 3-4 shown, when the first assembly plate 13 and the second assembly plate 14 approach each other, the mounting blocks 19 on the first assembly plate 13 are fixedly connected to the mounting blocks 19 on the second assembly plate 14. When the first assembly plate 13 and the second assembly plate 14 move away from each other, the mounting blocks 19 on the first assembly plate 13 and the mounting blocks 19 on the second assembly plate 14 are respectively fixedly installed at both ends of the connecting plate 15.

[0048] Furthermore, the linear drive member 3 includes a lead screw motor 31 fixedly arranged on the first semi-circular plate 21, a first buffer bracket arranged on the output shaft of the lead screw motor 31, a support column 32 fixedly arranged at the end of the first buffer bracket, and a positioning roller 33 arranged at the end of the support column 32. The ultrasonic phased array assembly 4 includes a mounting column 41 fixedly arranged at the end of the first buffer bracket, and an ultrasonic phased array probe 42 arranged at the end of the mounting column 41. The distance between the ultrasonic phased array probe 42 and the axis of the assembly ring 2 is greater than the distance between the positioning roller 33 and the axis of the assembly ring 2.

[0049] Specifically, the first buffer bracket includes a sleeve 34 threadedly connected to the output shaft of the lead screw motor 31, an assembly frame 35 slidably connected to the inner wall of the sleeve 34, and a pressure sensor 36 fixedly arranged at one end of the inner side of the sleeve 34. The pressure sensor 36 is connected to the assembly frame 35 through a spring. The assembly frame 35 is also slidably connected to the second semi-circular plate 24. A lug is fixedly arranged on the second semi-circular plate 24, and a guide rod is fixedly arranged on the assembly frame 35. The guide rod on the assembly frame 35 is slidably matched with the lug on the second semi-circular plate 24.

[0050] Before the ultrasonic phased array component 4 emits ultrasonic waves for weld detection, the ultrasonic phased array component 4 is driven close to the wall-thickness pipeline T by the linear drive member 3. During the specific driving process, the lead screw motor 31 drives the sleeve 34 to move linearly, so that the mounting frame 35, the support column 32 and the alignment roller 33 approach the wall-thickness pipeline T. When the pressure measured by the pressure sensor 36 reaches the threshold value, it indicates that the alignment roller 33 abuts tightly against the wall-thickness pipeline T. At this time, the ultrasonic phased array probe 42 is started to detect the weld. When the alignment roller 33 abuts against the outer wall of the wall-thickness pipeline T, the ultrasonic phased array probe 42 keeps a certain distance from the outer wall of the wall-thickness pipeline T, avoiding damage to the ultrasonic phased array probe 42 due to impact, and avoiding the ultrasonic phased array probe 42 from impacting the coupling agent applied on the wall-thickness pipeline T and preventing the coupling agent from falling off. In the case where the ultrasonic phased array probe 42 needs to be rotated, the abutting condition between the alignment roller 33 and the wall-thickness pipeline T is detected in real time by the pressure sensor 36, and the lead screw motor 31 is adjusted according to the pressure detection result to ensure that the ultrasonic phased array probe 42 always keeps a fixed distance from the outer wall of the wall-thickness pipeline T.

[0051] Second Embodiment

[0052] As Figures 8-11 shown, this embodiment relates to another wall-thickness pipeline weld detection device based on ultrasonic phased array. The difference between this device and the previous embodiment is that a coupling agent spraying component 6 and a scraping component 7 are further provided on the assembly ring 2. The coupling agent spraying component 6 is composed of a telescopic component 61 and an injection component 62 fixed to the output end of the telescopic component 61.

[0053] The structure of the telescopic component 61 is basically the same as that of the linear drive member 3. The telescopic component 61 includes a lead screw motor 611 fixed to the semi-circular arc plate 21, a second buffer bracket provided on the output shaft of the lead screw motor 611, a support column 612 fixed to the end of the second buffer bracket, and an alignment roller 613 provided at the end of the support column 612. The distance between the coupling agent outlet of the injection component 62 and the axis of the assembly ring 2 is greater than the distance between the alignment roller 613 and the axis of the assembly ring 2. The second buffer bracket includes a sleeve 614 threadedly connected to the output shaft of the lead screw motor 611, a mounting frame 615 slidably connected to the inner wall of the sleeve 614, and a pressure sensor 616 fixed to one end inside the sleeve 614. The pressure sensor 616 is connected to the mounting frame 615 through a spring. The mounting frame 615 is slidably connected to the semi-circular arc plate 24.

[0054] The injection assembly 62 includes a syringe 621 which is composed of a barrel, a piston slidably disposed inside the barrel, and a piston rod fixedly disposed on the piston. The piston rod penetrates through the barrel, and a coupling agent outlet is provided at one end of the barrel. The injection assembly 62 further includes a mounting cylinder 622 fixedly disposed on the barrel of the syringe 621, a plug 623 fixedly disposed at one end of the mounting cylinder 622 away from the coupling agent outlet, and a piston rod driving member disposed between the mounting cylinder 622 and the piston rod of the syringe 621. The plug 623 is inserted into the output end of the telescopic assembly 61, and this output end is the second buffer bracket.

[0055] Specifically, a chute is disposed through the inside of the plug 623. Wedge-shaped blocks 624 are slidably connected to both sides of the chute. Two partition plates 625 are fixedly disposed in the middle of the chute, and the two partition plates 625 are respectively spring-connected to the two blocks 624. A rotating shaft 626 is rotatably disposed on the mounting cylinder 622, and the rotating shaft 626 is connected to the two blocks 624 through a thin rope. The piston rod driving member includes a second motor 627 fixedly disposed on the piston rod of the syringe 621, a second gear 628 fixedly disposed at the output end of the second motor 627, and a rack 629 meshing with the second gear 628. The rack 629 is fixedly disposed on the inner wall of the mounting cylinder 622. In addition, a limiting rod is fixedly disposed on the barrel of the syringe 621, and the piston rod of the syringe 621 is slidably connected to the limiting rod. A slot 617 corresponding to the plug 623 and a clamping slot 618 corresponding to the block 624 are provided inside the second assembly frame 615. In addition, a strip-shaped groove is provided on the side wall of the second support 612 close to the mounting cylinder 622, and a convex strip is provided on the mounting cylinder 622. The convex strip can be embedded in the strip-shaped groove and can slide along the length direction of the strip-shaped groove. The strip-shaped groove, in cooperation with the slot 617 and the clamping slot 618, jointly provides support for the injection assembly 62.

[0056] In this embodiment, the coupling agent spraying assembly 6 sprays the coupling agent on the thick-walled pipe T, and the scraping assembly 7 levels the coupling agent. While saving manpower, the spraying uniformity of the coupling agent is improved. During the process of spraying the coupling agent, the coupling agent spraying assembly 6 is rotated by the rotation driving member 5. The coupling agent spraying assembly 6 drives the second gear 628 to rotate through the second motor 627. Through the meshing of the second gear 628 and the rack 629, the second motor 627 presses down the piston rod, and sprays the coupling agent in the cylinder body to the ultrasonic detection area near the weld of the thick-walled pipe T. During the spraying process, the insertion block 623 is inserted into the slot 617, and the locking block 624 is inserted into the clamping groove 618. After the spraying is completed, the rotating shaft 626 is rotated, and the rotating shaft 626 pulls out the locking block 624 from the clamping groove 618 through the thin rope. Then, the rotating shaft 626 is moved in a direction away from the slot 617, and the injection assembly 62 can be pulled out from the assembly frame two 615, and the coupling agent in the syringe 621 can be replenished. After replenishing the coupling agent, the insertion block 623 on the injection assembly 62 is inserted into the slot 617, and the locking block 624 is inserted into the clamping groove 618 under the elastic force of the spring in the insertion block 623, and the installation of the injection assembly 62 can be completed.

[0057] In addition, the scraping assembly 7 is composed of a second telescopic assembly, a support frame and a scraping plate. The second telescopic assembly has the same structure as the linear driving member 3, and the scraping plate is connected to the output end of the second telescopic assembly through the support frame. When the alignment roller of the scraping assembly 7 abuts against the outer wall of the thick-walled pipe T, the scraping plate also maintains a certain distance from the outer wall of the thick-walled pipe T, ensuring that after the coupling agent is leveled, the thickness of the coupling agent in the ultrasonic detection area near the weld is uniform.

[0058] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An ultrasonic phased array-based wall thickness pipeline weld detection device, which is used to detect the welds of wall thickness pipelines with different installation directions, and is characterized in that: It includes a support component (1), on which an assembled assembly ring (2) is provided. A linear drive member (3) is provided along the radial direction of the assembly ring (2), and an ultrasonic phased array component (4) is provided at the output end of the linear drive member (3). A rotary drive member (5) for driving the assembly ring (2) to rotate around the wall-thick pipe is provided on the support component (1). The support component (1) includes a set of first support wheels (11) and a set of second support wheels (12) for supporting the assembly ring (2). When the wall-thick pipe is a horizontal pipe, both the set of first support wheels (11) and the set of second support wheels (12) are located below the axis of the assembly ring (2). When the wall-thick pipe is a vertical pipe, the set of first support wheels (11) and the set of second support wheels (12) are symmetrically arranged on both sides of the axis of the assembly ring (2).

2. The wall thickness pipeline weld detection device according to claim 1, wherein: The support component (1) further includes an assembly plate one (13) for installing the first support wheels (11), an assembly plate two (14) for installing the second support wheels (12), a connecting plate (15) for connecting the assembly plate one (13) and the assembly plate two (14), and a bottom plate (16) hinged below the connecting plate (15). An angle adjusting member (17) is provided between the bottom plate (16) and the connecting plate (15).

3. The wall thickness pipeline weld detection device according to claim 2, wherein: The assembly ring (2) includes two oppositely arranged semi-circular arc plates one (21). A semi-circular arc groove body (22) is formed on the outer arc surface of the semi-circular arc plate one (21), and a semi-gear ring (23) is fixedly provided on the inner circumference of the semi-circular arc plate one (21). The semi-circular arc groove body (22) is in rolling fit with the first support wheels (11) and the second support wheels (12). The rotary drive member (5) includes a gear one (51) meshing with the semi-gear ring (23), and a gear drive member whose output end is connected to the gear one (51).

4. The wall thickness pipeline weld detection device according to claim 3, wherein: A pair of semi-circular arc plates two (24) are fixedly provided on the inner side of each semi-circular arc plate one (21). Convex blocks (25) are provided at the ends of one pair of semi-circular arc plates two (24), and notches corresponding to the convex blocks (25) are provided at the ends of the other pair of semi-circular arc plates two (24). A connecting block (26) is provided between the two semi-circular arc plates one (21), and a stop block (27) corresponding to the connecting block (26) is provided on the semi-circular arc plate one (21). The connecting block (26) connects the two semi-circular arc plates one (21) through threaded fasteners, and the convex blocks (25) connect the two pairs of semi-circular arc plates two (24) through threaded fasteners.

5. The wall thickness pipeline weld detection device according to claim 3, characterized in that: The device further includes a positioning member (8). A positioning cylinder (28) is fixedly provided on one of the semi-circular arc plates one (21). A jack (18) is provided on the assembly plate one (13). When the assembly plate one (13) is flipped, the positioning member (8) is inserted into the jack (18) and the positioning cylinder (28) to position the assembly plate one (13) and the semi-circular arc plate one (21).

6. The wall thickness pipeline weld detection device according to claim 1, characterized in that: The linear drive member (3) includes a screw motor one (31) fixedly provided on the assembly ring (2), a first buffer bracket provided on the output shaft of the screw motor one (31), a support pillar one (32) fixedly provided at the end of the first buffer bracket, and a positioning roller one (33) provided at the end of the support pillar one (32).

7. The wall thickness pipeline weld detection device according to claim 6, characterized in that: The ultrasonic phased array component (4) includes a mounting post (41) fixedly arranged at the end of the first buffer bracket, and an ultrasonic phased array probe (42) arranged at the end of the mounting post (41). The distance between the ultrasonic phased array probe (42) and the axis of the assembly ring (2) is greater than the distance between the first alignment roller (33) and the axis of the assembly ring (2).

8. The wall thickness pipeline weld detection device according to claim 6, characterized in that: The first buffer bracket includes a sleeve one (34) threadedly connected to the output shaft of the first screw motor (31), an assembly frame one (35) slidably connected to the inner wall of the sleeve one (34), and a pressure sensor one (36) fixedly arranged at one end inside the sleeve one (34). The pressure sensor one (36) is connected to the assembly frame one (35) through a spring.

9. The wall thickness pipeline weld detection device according to claim 1, wherein: The assembly ring (2) is provided with a coupling agent spraying component (6) and a scraping component (7). The coupling agent spraying component (6) is composed of a first telescopic component (61) and an injection component (62) fixedly arranged at the output end of the first telescopic component (61).

10. The wall thickness pipeline weld detection device according to claim 9, characterized in that: The injection component (62) includes a syringe (621), a mounting cylinder (622) arranged on the barrel of the syringe (621), a plug (623) arranged at the end of the mounting cylinder (622), and a piston rod driving part arranged between the mounting cylinder (622) and the piston rod of the syringe (621). The plug (623) is inserted into the output end of the first telescopic component (61).

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