CN115825240A

CN115825240A - Device for integrally detecting pipeline welding seam by using TOFD and PAUT

Info

Publication number: CN115825240A
Application number: CN202211546464.3A
Authority: CN
Inventors: 田旭海; 杨鹏展; 李增; 刘安杰; 张家政; 常继军; 郭锋
Original assignee: Tianjin City Siweiqi Testing Technology Co ltd
Current assignee: Tianjin City Siweiqi Testing Technology Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-03-21

Abstract

The invention discloses a device for integrally detecting a pipeline welding seam by using a TOFD (time of flight diffraction) and a PAUT (programmable optical switch), which belongs to the technical field of pipeline detection and has the technical scheme that the device for integrally detecting the pipeline welding seam by using the TOFD and the PAUT comprises a supporting structure, a limiting structure and a guiding structure, wherein the limiting structure comprises a first loading frame and a second loading frame, the first loading frame and the second loading frame are provided with a plurality of rollers, the first loading frame and the second loading frame are connected with the crossbeam, the first loading frame and the second loading frame are respectively connected with a first clamping head and a second clamping head for clamping a probe, the guiding structure comprises a plurality of rollers and an adjusting piece for adjusting the positions of the rollers, the rollers are provided with a plurality of rollers, the rollers are relatively rotatably connected with the crossbeam, and the adjusting piece is connected with the rollers, so that the detection precision of a scanner is improved.

Description

Device for integrally detecting pipeline welding seam by using TOFD and PAUT

Technical Field

The invention relates to the field of pipeline detection, in particular to a device for integrally detecting a pipeline welding seam by using TOFD and PAUT.

Background

At present, pipelines are widely used in various industrial production and living scenes as a common transportation device for transporting gas, liquid or fluid with solid particles.

In the related technology, polyolefin pipelines are often connected by a hot melting method, due to the influence factors such as power-on time and welding temperature, defects such as unfused, slag inclusion, air holes and the like may occur in the welding seams of the pipelines, and ultrasonic nondestructive testing methods such as ultrasonic Phased Array (PAUT) and ultrasonic time difference diffraction (TOFD) are often used for detecting the welding seams of the pipelines; when the PAUT method or the TOFD method is used, a scanner is required to be used for fixing the PAUT probe or the TOFD probe, the scanner comprises a cross beam and a loading frame, the loading frame is in sliding connection with the cross beam, a clamping head used for fixing the PAUT probe or the TOFD probe is fixedly connected onto the loading frame, and a worker holds the scanner to drive the probe to move along the length direction of a weld joint, so that the detection work of the weld joint defect is completed.

Aiming at the related technologies, the welding seams of polyolefin pipelines with different curvatures are often required to be detected according to different production requirements, the angle is not easy to adjust when the PAUT probe or the TOFD probe is connected with the cross beam, so that the detection result can be influenced, and the scanning device is moved manually by a worker, so that the deviation of a moving path is not easy to perceive, and the defect that the detection precision of the scanning device is not high exists.

Disclosure of Invention

In order to improve the detection precision of the scanner, the invention provides a device for integrally detecting the pipeline welding seam by using TOFD and PAUT.

The device for integrally detecting the pipeline welding seam by using the TOFD and the PAUT adopts the following technical scheme:

the device for integrally detecting the pipeline welding seam by using the TOFD and the PAUT comprises a supporting structure, wherein the supporting structure comprises a beam, a limiting structure and a guiding structure, the limiting structure comprises a first loading frame and a second loading frame, the first loading frame and the second loading frame are respectively provided with a plurality of loading frames, the first loading frame and the second loading frame are respectively positioned on two sides of the beam in the length direction and are connected with the beam, the first loading frame and the second loading frame are respectively connected with a first clamping head and a second clamping head which are used for clamping a probe, the guiding structure comprises a plurality of rollers and adjusting pieces used for adjusting the positions of the rollers, the rollers are relatively rotatably connected with the beam, and the adjusting pieces are connected with the rollers.

By adopting the technical scheme, when the first clamping head and the second clamping head are respectively connected with the PAUT probe or the TOFD probe, a worker can drive the first clamping head to move by moving the beam, so that the detection work of the pipeline welding seam is completed; the position of the roller is adjustable, so that when a worker moves the beam, more stress points are provided, the PAUT probe or the TOFD probe can stably move, and the offset caused by manual movement is reduced; the position that the regulating part can adjust the gyro wheel makes its pipeline that adapts to different curvatures, improves and detects the precision.

Preferably, the adjusting part is an adjusting rod, the adjusting rod is provided with a plurality of adjusting rods, the adjusting rods penetrate through the cross beam and are in sliding connection with the cross beam, the adjusting rods are connected with limiting parts used for limiting the positions of the adjusting rods, and one ends of the adjusting rods, which are located below the bottom surface of the cross beam, are oppositely connected with the rollers.

Through adopting above-mentioned technical scheme, adjust the gyro wheel position through the slip regulation pole, improve the flexibility ratio of gyro wheel, the locating part can restrict the position of adjusting the pole on the crossbeam, makes the gyro wheel all the time can with the pipeline butt, improves the stability of crossbeam in the testing process, makes the removal of probe more steady, improves and detects the precision.

Preferably, the limiting part is an adjusting nut, the adjusting nut is provided with a plurality of adjusting nuts, and the adjusting nuts are sleeved on the adjusting rod and are in threaded connection with the adjusting rod.

Through adopting above-mentioned technical scheme, adjusting nut and crossbeam butt can restrict the relative position of adjusting pole and crossbeam, make the rigidity of gyro wheel, be difficult for producing the skew, all the time with pipeline outer wall fixed connection and support the crossbeam.

Preferably, the supporting structure further comprises a connecting rod, one end of the connecting rod is hinged to the adjusting rod, the other end of the connecting rod is connected with the cross beam in a sliding mode, and the roller is correspondingly connected with one end, far away from the cross beam, of the connecting rod in a rotating mode.

Through adopting above-mentioned technical scheme, the connecting rod can enough provide the support to the gyro wheel with adjusting the pole articulated, also is convenient for the staff to adjust the position of gyro wheel.

Preferably, two groups of the guide structures are symmetrically arranged on two sides of the cross beam in the length direction respectively.

Through adopting above-mentioned technical scheme, two sets of gyro wheels can improve the stability of crossbeam, make the atress of crossbeam more even, and the probe can remove more steadily, reduces the skew to improve and detect the precision.

Preferably, the cross beam is connected with two aligning rods for aligning the welding seam, and the two aligning rods are respectively and fixedly connected with the bottom surface of the cross beam.

By adopting the technical scheme, the alignment rod can assist workers in adjusting the positions of the probes, so that the middle points of the two probes are aligned with the welding line, and the detection precision is further improved.

Preferably, a handle for moving the cross beam is fixedly connected to the cross beam.

Through adopting above-mentioned technical scheme, the staff of being convenient for of handle grips to promote the crossbeam steadily, thereby reduce the offset of probe, reduce the detection error.

Preferably, the supporting structure further comprises two mounting frames, the two mounting frames are respectively and fixedly connected with two sides of the cross beam in the length direction, and the first loading frame and the second loading frame are respectively and relatively slidably connected with the two mounting frames.

Through adopting above-mentioned technical scheme, first loading frame, second loading frame and mounting bracket sliding connection make between pulley and first loading frame, the second loading frame difficult influence each other, are convenient for detect the welding seam.

Preferably, the mounting frame is slidably connected with a plurality of mounting sleeves, the mounting sleeves are fixedly connected with the first loading frame and the second loading frame respectively, the first loading frame and the second loading frame are in threaded connection with fixing bolts for limiting the positions of the first loading frame and the second loading frame, the fixing bolts penetrate through the mounting sleeves and are in threaded connection with the mounting sleeves, and fixing nuts are in threaded connection with the fixing bolts.

By adopting the technical scheme, the installation sleeve can be convenient for a worker to slide the first loading frame and the second loading frame stably, so that the distance of the probe on the same side can be adjusted, the fixing bolt can limit the positions of the first loading frame and the second loading frame, and the deviation in the detection process is reduced.

Preferably, the cross beam is provided with scales for determining the position of the mounting sleeve on the mounting frame.

By adopting the technical scheme, the staff can judge whether the TOFD probe or the PAUT probe moves to a proper position through the scales, and the detection precision is further improved.

In conclusion, the invention has the following beneficial effects:

1. the PAUT probe and the TOFD probe can be installed on the crossbeam simultaneously, carry out TOFD and the integrated detection work of PAUT, through the angle of regulating part adjusting roller and crossbeam, the staff of being convenient for detects steadily, reduces the probe skew.

2. The alignment rod is convenient for a worker to observe whether the welding seam is positioned in the middle of the probe, so that the measurement error caused by the deviation of the probe is reduced, and the detection precision is improved.

3. Through adjusting the angle of pole upper and lower slip regulation gyro wheel, can improve the flexibility ratio of gyro wheel, make its pipeline outer wall that adapts to different curvatures, provide the support to the removal of probe more steadily.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

Fig. 2 is a schematic partial exploded view of an embodiment of the present application, intended to show a mounting sleeve and a sliding rod.

Description of reference numerals:

1. a support structure; 11. a cross beam; 111. a sliding groove; 12. a mounting frame; 121. installing a sleeve; 2. a guide structure; 21. a connecting rod; 211. a slide bar; 22. a roller; 23. adjusting a rod; 231. adjusting the nut; 3. a limiting structure; 31. a first loading frame; 311. a first gripping head; 32. a second loading frame; 321. a second gripping head; 33. fixing the bolt; 331. fixing a nut; 4. an alignment rod; 5. a handle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The device for integrally detecting the pipeline welding seam by using the TOFD and the PAUT comprises a supporting structure 1, a guiding structure 2 and a limiting structure 3, wherein the guiding structure 2 is connected with the supporting structure 1 and is used for guiding the TOFD probe or the PAUT probe to move, and the limiting structure 3 is connected with the supporting structure 1 and is used for fixing the position of the TOFD probe or the PAUT probe so as to enable the TOFD probe or the PAUT probe to be stably detected along the length direction of the welding seam.

As shown in fig. 1, the supporting structure 1 includes a cross beam 11 and an installation frame 12, the cross beam 11 is a horizontal cuboid structure, the installation frame 12 is provided with two, which are respectively located on two sides of the cross beam 11 in the length direction and are fixedly connected with the cross beam 11, the installation frame 12 includes two vertical sections and one horizontal section, one side of each of the two vertical sections is fixedly connected with the side of the cross beam 11 in the length direction, the other side of each of the two vertical sections is fixedly connected with two ends of the horizontal section, and the horizontal section of the installation frame 12 is parallel to the length direction of the cross beam 11.

As shown in fig. 1 and 2, the guiding structure 2 includes four connecting rods 21, four rollers 22 and four adjusting members, the four connecting rods 21 are respectively connected with the side surfaces of the cross beam 11 in the length direction in a sliding manner, one end of each connecting rod 21 is fixedly connected with a sliding rod 211, one end of each sliding rod 211, which is far away from the corresponding connecting rod 21, is fixedly connected with a sliding block, the side surfaces of the cross beam 11 in the length direction are correspondingly provided with sliding grooves 111 for the sliding blocks to slide, and the length direction of the sliding grooves 111 is parallel to the length direction of the cross beam 11; the number of the rollers 22 is four, and the rollers are respectively connected with one ends of the four connecting rods 21 far away from the cross beam 11 in a rotating manner, and the rotating shafts of the rollers 22 are parallel to the length direction of the connecting rods 21.

As shown in fig. 1, the adjusting member may be a rod-shaped structure hinged to the connecting rod 21 and slidably connected to the bottom surface of the cross beam 11, or may be an adjusting rod 23, the adjusting rod 23 is a vertical rod-shaped structure, and there are four adjusting rods 23, the adjusting rod 23 passes through the cross beam 11 and slidably connected to the cross beam 11, one end of the adjusting rod 23 located below the cross beam 11 is hinged to one end of the connecting rod 21 connected to the roller 22, the adjusting rod 23 is connected to a limiting member for limiting the position of the adjusting rod 23, the limiting member may be an elastic buckle sleeved on the adjusting rod 23, or may be an adjusting nut 231, in this embodiment, the adjusting nut 231 is adopted, the outer surface of the adjusting rod 23 is provided with a thread, two adjusting nuts 231 are threadedly connected to each adjusting rod 23, one is located above the top surface of the cross beam 11, and the other is located below the bottom surface of the cross beam 11.

When the device is used, the adjusting rod 23 is vertically slid, so that the adjusting rod 23 drives the connecting rod 21 to rotate, the angle between the roller 22 and the cross beam 11 is adjusted, and the roller 22 can adapt to pipelines with different curvatures; the adjustment nuts 231 are screwed to bring the two adjustment nuts 231 into contact with the cross beam 11, respectively, thereby fixing the position of the adjustment rod 23.

As shown in fig. 1 and 2, the limiting structure 3 includes a first loading frame 31, a second loading frame 32 and a fixing bolt 33, two mounting sleeves 121 are slidably connected to the same mounting frame 12, the mounting sleeves 121 are of a C-shaped buckling structure with a longitudinal section, and a scale for determining the position of the mounting sleeves 121 is arranged on the cross beam 11; first loading frame 31 is provided with two, first loading frame 31 includes a vertical section and a horizontal segment, and the one end of vertical section and the one end fixed connection of horizontal segment, the one end and the installation cover 121 fixed connection of the horizontal segment are kept away from to the vertical section of first loading frame 31 for first loading frame 31 can slide along the length direction of mounting bracket 12, the first clamping head 311 of the first fixed connection respectively of the horizontal segment of every first loading frame 31, set up the hole that supplies TOFD probe or PAUT probe to install on the first clamping head 311.

As shown in fig. 1 and 2, the second loading frame 32 has the same shape as the first loading frame 31, two second loading frames 32 are provided and are respectively and fixedly connected with the mounting sleeves 121 on the other mounting frame 12, and a second clamping head 321 having the same shape as the first clamping head 311 is respectively and fixedly connected to a horizontal section of each second loading frame 32.

As shown in fig. 1 and 2, a horizontal fixing bolt 33 passes through the first loading frame 31, the second loading frame 32 and the mounting sleeve 121 and is in threaded connection with the first loading frame 31, the second loading frame 32 and the mounting sleeve 121, a fixing nut 331 is in threaded connection with the fixing bolt 33, and when the fixing nut 331 is rotated to abut against the first loading frame 31 or the second loading frame 32, one end of the fixing bolt 33 close to the mounting frame 12 abuts against the mounting frame 12.

As shown in fig. 1, the alignment rod 4 is a vertical rod-shaped structure, and is fixedly connected to the bottom surface of the cross beam 11 and located on a symmetry axis in the length direction of the cross beam 11; the top surface of the cross beam 11 is fixedly connected with a handle 5, and the length direction of the handle 5 is parallel to the length direction of the cross beam 11.

The application process of the invention is as follows:

during the use, the staff holds handle 5, move crossbeam 11 to the pipeline top of being detected, be connected TOFD probe and PAUT probe with first clamping head 311, second clamping head 321 respectively, make alignment rod 4 and pipeline welding seam align, remove installation cover 121 and make TOFD probe and PAUT probe remove respectively to suitable position, twist fixation nut 331 and make fixing bolt 33 and mounting bracket 12 butt, the position of restriction TOFD probe and PAUT probe, twist adjusting nut 231 and make adjusting lever 23 slide from top to bottom, thereby adjust the position of gyro wheel 22, make a plurality of gyro wheels 22 all with pipeline outer wall butt, twist adjusting nut 231 again and fix the position of gyro wheel 22.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. An apparatus for integrated inspection of pipe welds using TOFD and PAUT, comprising a support structure (1), said support structure (1) comprising a cross-beam (11), characterized in that: the probe clamping device is characterized by further comprising a limiting structure (3) and a guiding structure (2), wherein the limiting structure (3) comprises a first loading frame (31) and a second loading frame (32), the first loading frame (31) and the second loading frame (32) are arranged in a plurality, the first loading frame (31) and the second loading frame (32) are respectively located on two sides of the length direction of the beam (11) and are connected with the beam (11), the first loading frame (31) and the second loading frame (32) are respectively connected with a first clamping head (311) and a second clamping head (321) used for clamping a probe, the guiding structure (2) comprises a plurality of rollers (22) and adjusting pieces used for adjusting the positions of the rollers (22), the rollers (22) are arranged in a plurality, the rollers (22) are connected with the beam (11) in a relatively rotating mode, and the adjusting pieces are connected with the rollers (22).

2. The apparatus of claim 1 for integrated inspection of pipe welds using TOFD and PAUT, wherein: the adjusting part is adjusting pole (23), it is provided with a plurality ofly to adjust pole (23), and is a plurality of adjust pole (23) pass crossbeam (11) and with crossbeam (11) sliding connection, it is used for the restriction to adjust pole (23) position's locating part to be connected with to adjust pole (23), adjust pole (23) be located crossbeam (11) bottom surface below one end with gyro wheel (22) are connected relatively.

3. The apparatus of claim 2, wherein the TOFD and PAUT are integrated to inspect a pipe weld, and wherein: the locating part is adjusting nut (231), adjusting nut (231) are provided with a plurality ofly, and a plurality ofly adjusting nut (231) cover is established adjust pole (23) go up and with adjust pole (23) threaded connection.

4. The apparatus of claim 3, wherein the TOFD and PAUT are integrated to inspect a pipe weld, and wherein: the supporting structure (1) further comprises a connecting rod (21), one end of the connecting rod (21) is hinged to the adjusting rod (23), the other end of the connecting rod is connected with the cross beam (11) in a sliding mode, and the roller (22) is correspondingly connected with one end, far away from the cross beam (11), of the connecting rod (21) in a rotating mode.

5. The apparatus of claim 4, wherein the TOFD and PAUT are integrated to inspect a pipe weld according to the following claims: two groups of guide structures (2) are symmetrically arranged on two sides of the cross beam (11) in the length direction respectively.

6. The apparatus of claim 1 for integrated inspection of pipe welds using TOFD and PAUT, wherein: the welding seam aligning device is characterized in that two aligning rods (4) used for aligning welding seams are connected to the cross beam (11), and the two aligning rods (4) are respectively fixedly connected with the bottom surface of the cross beam (11).

7. The apparatus of claim 1 for integrated inspection of pipe welds using TOFD and PAUT, wherein: the cross beam (11) is fixedly connected with a handle (5) used for moving the cross beam (11).

8. The apparatus of claim 7 for integrated inspection of pipe welds using TOFD and PAUT, wherein: the supporting structure (1) further comprises two mounting frames (12), the two mounting frames (12) are respectively fixedly connected with two sides of the cross beam (11) in the length direction, and the first loading frame (31) and the second loading frame (32) are respectively connected with the two mounting frames (12) in a relative sliding mode.

9. The apparatus of claim 8 for integrated inspection of pipe welds using TOFD and PAUT, wherein: the mounting frame (12) is connected with a plurality of mounting sleeves (121) in a sliding mode, the mounting sleeves (121) are arranged in a plurality of numbers, the mounting sleeves (121) are respectively fixedly connected with the first loading frame (31) and the second loading frame (32), fixing bolts (33) used for limiting the positions of the first loading frame (31) and the second loading frame (32) are connected to the first loading frame (31) and the second loading frame (32) in a threaded mode, the fixing bolts (33) penetrate through the mounting sleeves (121) and are connected with the mounting sleeves (121) in a threaded mode, and fixing nuts (331) are connected to the fixing bolts (33) in a threaded mode.

10. The apparatus of claim 9 for integrated inspection of pipe welds using TOFD and PAUT, wherein: the cross beam (11) is provided with scales for determining the position of the mounting sleeve (121) on the mounting frame (12).