A guided pipeline weld ultrasonic detection device and detection method thereof

Abstract

The present invention relates to the technical field of pipeline detection, and in particular to a guided pipeline weld ultrasonic detection device and a detection method thereof. It comprises a mounting seat, a pipeline limiting mechanism movably penetrates one side wall of the mounting seat; two groups of first support plates are symmetrically arranged at the edges of both sides of the top of the mounting seat; a pipeline guiding mechanism and a weld detection mechanism are arranged in the first support plate. The present invention controls the ultrasonic probe to contact the outer wall of the edge of the pipeline weld, and then controls the conductive ring to drive the ultrasonic probe to move along the weld direction so as to perform a comprehensive detection of the weld. In the detection process, due to the restriction of the two groups of limiting rings, the ultrasonic probe can perform regular circular motion in a wave shape to detect the weld. At the same time, the spacing between the two groups of limiting rings can be adjusted as needed to adjust the swing amplitude, so as to avoid the problem of position displacement of the probe during the detection process, thereby improving the use effect of the ultrasonic detection device.

Description

Technical Field

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

[0002] Ultrasonic weld inspection is widely used to detect internal defects in steel pipe welds, such as slag inclusions and brittle fractures. It can accurately identify the location and type of defects without damaging the weld. For example, CN118225885A discloses an ultrasonic time-of-flight diffraction inspection device for weld inspection, comprising a fixed rod with a mounting slot at the bottom, two movable blocks slidably mounted within the mounting slot, a detection assembly connected to the bottom of the movable blocks, and an adjustment rod threadedly inserted between the two movable blocks. During the inspection of pipeline welds, this invention allows the detection probe and receiving probe to be controlled simultaneously with one hand, while the ultrasonic detector is controlled with the other hand. This reduces the inspection difficulty and improves the inspection efficiency compared to the method of multiple inspectors cooperating in the inspection. In addition, when it is necessary to stop midway or add a mark to the weld defect, the magnetic plate can cooperate with the roller to adsorb the fixed rod and the detection assembly to the current position on the pipe wall, thereby facilitating the continuation of subsequent inspections. Currently, for the inspection of pipeline welds, it is usually necessary to move the probe of a handheld inspection device along the direction of the weld to conduct a comprehensive inspection of the weld. However, after personnel continue to perform repeated inspections for a long time, the probe position will shift, thereby reducing the effectiveness of the inspection device. Summary of the Invention

[0003] In response to the above problems, the present invention provides a guided ultrasonic detection device for pipeline welds, comprising a mounting base, a pipeline limiting mechanism movably passing through one side wall of the mounting base; a pipeline guiding mechanism and a weld detection mechanism are provided on the top of the mounting base;

[0004] The weld detection mechanism includes a second mounting ring; a mounting groove is provided on the inner wall of the second mounting ring; two sets of limit rings are provided at both ends of the mounting groove;

[0005] The two sets of limiting rings are provided with a plurality of limiting grooves in a circular array at opposite ends thereof; when the two sets of limiting rings are combined, a wavy annular channel is formed; a conductive ring is provided in the installation groove;

[0006] A connecting assembly is provided on the inner wall of the conductive ring; a probe limiting assembly is transmission-connected to the output end of the connecting assembly; an ultrasonic probe is provided on the probe limiting assembly;

[0007] The conductive ring is controlled to rotate to drive the ultrasonic probe to move in a wavy circular trajectory along the direction of the pipeline weld to perform ultrasonic testing.

[0008] Furthermore, the pipeline limiting mechanism includes a translation plate; the translation plate is movable through the mounting seat; two groups of vertical plates are symmetrically provided at the two side edges of the top of the translation plate; two groups of second support plates are symmetrically provided on the opposite side walls of the top of the two groups of vertical plates; two groups of clamping plates are symmetrically provided on the top of each group of the second support plates; the cross-section of each group of clamping plates is fan-shaped, and several groups of limiting teeth are provided at equal intervals on the inner wall.

[0009] Furthermore, the pipeline guide mechanism includes a first mounting ring; a mounting cavity is provided in the first mounting ring; a plurality of groups of first electric push rods are distributed in a circular array on the inner wall of the mounting cavity; the output end of each group of the first electric push rods extends into the first mounting ring, and is transmission-connected to a group of guide blocks.

[0010] Furthermore, each group of guide blocks is provided with a group of guide wheels on one side wall away from the corresponding group of first electric push rods; a group of rubber sleeves are sleeved on the outer wall of each group of guide wheels; and several groups of scanning cameras are distributed in a circular array on the inner wall of the first mounting ring.

[0011] Furthermore, the connecting assembly includes a mounting plate; the mounting plate is mounted on the inner wall of the conductive ring; a sliding support block is provided on a side wall of the mounting plate away from the conductive ring; a second electric push rod is provided on a side wall of the sliding support block away from the mounting plate; the output end of the second electric push rod is transmission-connected to the probe limit assembly.

[0012] Furthermore, a brush is provided in the mounting groove; the brush is movably fitted with the outer wall of the conductive ring and is electrically connected; the brush is electrically connected to the ultrasonic flaw detector; the ultrasonic probe is electrically connected to the conductive ring; two groups of baffles are symmetrically provided at the edges of both sides of a side wall of the mounting plate close to the sliding support block; several groups of first reset springs are symmetrically provided on the side walls opposite to each other of the two groups of baffles; the other end of each group of the first reset springs is connected to the corresponding side wall of the sliding support block.

[0013] Furthermore, the probe limiting assembly includes a shell; a sliding groove is opened on a side wall of the shell away from the second electric push rod; two groups of threaded rods are arranged in the sliding groove; and a group of threaded grooves are symmetrically opened on the outer walls of the two groups of threaded rods.

[0014] Furthermore, two groups of first sliders are slidably connected to the bottom of the slide groove; each group of the first sliders is threadedly connected to a corresponding group of thread grooves; a group of probe clamping plates is provided on the top of each group of the first sliders; each group of the probe clamping plates is movably in contact with a side wall of the ultrasonic probe.

[0015] Furthermore, two groups of second sliders are slidably connected to the bottom of the slide; each group of the second sliders is threadedly connected to a corresponding group of threaded grooves; a group of gas springs is provided on the top of each group of the second sliders; a group of protective shells is provided on the top of each group of the gas springs; two groups of second return springs are symmetrically provided on the opposite side walls of the two groups of second sliders; the other end of each group of the second return springs is connected to a side wall of a corresponding group of first sliders; a limit column is provided at the bottom of the slide; the limit column is located between the two groups of first sliders.

[0016] A detection method of a guided pipeline weld ultrasonic detection device, the detection method comprising:

[0017] Pass the welded pipe through the pipe guide mechanism and the weld detection mechanism;

[0018] Control the pipeline limit mechanism to fix both ends of the pipeline;

[0019] Control the pipeline guide mechanism to drive the pipeline to move horizontally so that the weld stops when it reaches the detection mechanism;

[0020] Control the weld inspection mechanism to perform annular inspection on the welds of the pipeline;

[0021] Complete ultrasonic testing of pipeline welds.

[0022] The beneficial effects of the present invention are:

[0023] 1. By controlling the ultrasonic probe to contact the outer wall of the edge of the pipeline weld, and then controlling the conductive ring to drive the ultrasonic probe to move along the weld direction, the weld can be comprehensively inspected. In the detection process, due to the restriction of the two sets of limit rings, the ultrasonic probe can perform regular circular motion in a wave shape to detect the weld. At the same time, the spacing between the two sets of limit rings can be adjusted as needed to adjust the swing amplitude, avoiding the problem of position deviation of the probe during the detection process, thereby improving the use effect of the ultrasonic detection device.

[0024] 2. The two sets of second return springs are usually in a compressed state under normal conditions. They are in a stretched state only when the two sets of probe clamping plates clamp the ultrasonic probe. At this time, the two sets of first sliders disengage from the corresponding threaded grooves, and the threaded rods continue to rotate. The two sets of second sliders can drive the two sets of protective shells to wrap the ultrasonic probes through the two sets of gas springs, thereby preventing external forces from damaging the ultrasonic probes when idle. This not only improves the maintenance efficiency of the ultrasonic testing equipment, but also improves the protection performance of the ultrasonic testing equipment.

[0025] 3. By passing the pipeline through the pipeline guide mechanism and the weld detection mechanism, and then placing the two ends of the pipeline between the two sets of clamping plates respectively, and then controlling the four sets of first motors to drive the four sets of clamping plates to clamp the two ends of the pipeline, so that several sets of limit teeth are in contact with the outer wall of the pipeline, and then controlling the pipeline guide mechanism to drive the pipeline to move horizontally, so that the weld detection mechanism can perform annular detection on the pipeline weld, avoiding the need for manual operation and improving the efficiency of weld ultrasonic detection.

[0026] 4. When the pipeline is translated, the pipeline is located in the first mounting ring, and several groups of scanning cameras scan the outer wall of the pipeline and control several groups of first electric push rods to drive several groups of guide blocks to move toward the pipeline, so that several groups of rubber sleeves are in contact with the outer wall of the pipeline. Then, several groups of guide wheels are controlled to rotate synchronously to complete the translation of the pipeline. The telescopic length of the corresponding first electric push rod can be adjusted in real time according to the welding condition of the pipeline to adapt, thereby improving the compatibility of the ultrasonic detection device.

[0027] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic structural diagram of a detection device according to an embodiment of the present invention is shown;

[0030] Figure 2 It shows a schematic structural diagram of a pipeline limiting mechanism according to an embodiment of the present invention;

[0031] Figure 3 It shows a schematic structural diagram of a guide mechanism according to an embodiment of the present invention;

[0032] Figure 4 shows a cross-sectional schematic diagram of a guide mechanism according to an embodiment of the present invention;

[0033] Figure 5 It shows a structural schematic diagram of a weld detection mechanism according to an embodiment of the present invention;

[0034] Figure 6A cross-sectional schematic diagram of a weld detection mechanism according to an embodiment of the present invention is shown;

[0035] Figure 7 A schematic diagram of the installation structure of a probe limiting assembly according to an embodiment of the present invention is shown;

[0036] Figure 8 A schematic structural diagram of a limit ring according to an embodiment of the present invention is shown;

[0037] Figure 9 A cross-sectional schematic diagram of a probe limiting assembly according to an embodiment of the present invention is shown.

[0038] In the figure: 1. Mounting seat; 2. Pipe limiting mechanism; 3. First support plate; 4. Pipe guide mechanism; 5. Weld detection mechanism; 6. Ultrasonic flaw detector; 201. Translation plate; 202. Vertical plate; 203. Second support plate; 204. Clamping plate; 205. Limiting teeth; 206. First motor; 401. First mounting ring; 402. First electric push rod; 403. Guide block; 404. Guide wheel; 405. Rubber sleeve; 406. Scanning camera; 407. Mounting cavity; 501. Second mounting ring; 502. Mounting slot; 503. Limiting teeth Ring; 504, probe limit assembly; 505, ultrasonic probe; 506, conductive ring; 507, brush; 508, mounting plate; 509, sliding support block; 510, second electric push rod; 511, baffle; 512, first return spring; 50401, shell; 50402, slide groove; 50403, threaded rod; 50404, first slider; 50405, probe clamping plate; 50406, second slider; 50407, gas spring; 50408, protective shell; 50409, second return spring; 50410, limit column. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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 making creative efforts shall fall within the scope of protection of the present invention.

[0040] The embodiment of the present invention provides a guided pipe weld ultrasonic detection device, comprising a mounting base 1. For example, Figure 1As shown, a pipeline limiting mechanism 2 is movably penetrated on one side wall of the mounting base 1; two groups of first support plates 3 are symmetrically provided at the two side edges of the top of the mounting base 1; a pipeline guide mechanism 4 and a weld detection mechanism 5 are provided in the first support plate 3; an ultrasonic flaw detector 6 is provided on a side wall of the first support plate 3 away from the pipeline guide mechanism 4.

[0041] For example, Figure 2 As shown, the pipeline limiting mechanism 2 includes a translation plate 201; the translation plate 201 is movable through the mounting base 1; two groups of vertical plates 202 are symmetrically provided at the two side edges of the top of the translation plate 201; two groups of second support plates 203 are symmetrically provided on the opposite side walls of the top of the two groups of vertical plates 202; two groups of clamping plates 204 are symmetrically provided on the top of each group of second support plates 203; the cross-section of each group of clamping plates 204 is fan-shaped, and a number of groups of limiting teeth 205 are equidistantly provided on the inner wall; two groups of first motors 206 are provided on the side wall of each group of vertical plates 202 away from the translation plate 201; the output end of each group of the first motors 206 is transmission connected to the corresponding group of clamping plates 204.

[0042] When performing pipeline weld inspection, the pipeline is first passed through the pipeline guide mechanism 4 and the weld inspection mechanism 5, and then the two ends of the pipeline are respectively placed between the two groups of clamping plates 204, and then the four groups of first motors 206 are controlled to drive the four groups of clamping plates 204 to clamp the two ends of the pipeline, so that several groups of limiting teeth 205 are in contact with the outer wall of the pipeline, and then the pipeline guide mechanism 4 is controlled to drive the pipeline to move horizontally, so that the weld inspection mechanism 5 can perform annular inspection on the pipeline weld, thereby improving the convenience of use of the ultrasonic detection device.

[0043] For example, Figure 3 and Figure 4 As shown, the pipeline guide mechanism 4 includes a first mounting ring 401; a mounting cavity 407 is provided in the first mounting ring 401; a plurality of groups of first electric push rods 402 are distributed in a circular array on the inner wall of the mounting cavity 407; the output end of each group of the first electric push rods 402 extends into the first mounting ring 401, and is transmission-connected with a group of guide blocks 403; a group of guide wheels 404 are provided on a side wall of each group of the guide blocks 403 away from the corresponding group of first electric push rods 402; a group of rubber sleeves 405 are sleeved on the outer wall of each group of the guide wheels 404; a plurality of scanning cameras 406 are distributed in a circular array on the inner wall of the first mounting ring 401.

[0044] When the pipeline is translated, the pipeline is located in the first mounting ring 401, and several groups of scanning cameras 406 scan the outer wall of the pipeline and control several groups of first electric push rods 402 to drive several groups of guide blocks 403 to move toward the pipeline, so that several groups of rubber sleeves 405 are in contact with the outer wall of the pipeline. Then, several groups of guide wheels 404 are controlled to rotate synchronously to complete the translation of the pipeline, and the telescopic length of the corresponding first electric push rods 402 can be adjusted in real time according to the welding condition of the pipeline to adapt, thereby improving the compatibility of the ultrasonic detection device.

[0045] For example, Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, the weld detection mechanism 5 includes a second mounting ring 501; a mounting groove 502 is formed on the inner wall of the second mounting ring 501; two sets of limiting rings 503 are provided at both ends of the mounting groove 502; the two sets of limiting rings 503 have a plurality of limiting grooves distributed in an annular array at opposite ends; each set of limiting grooves is parabolic; when the two sets of limiting rings 503 are combined, a wavy annular channel is formed; a conductive ring 506 is provided in the mounting groove 502; a brush 507 is provided in the mounting groove 502; the brush 507 is movably fitted with the outer wall of the conductive ring 506 and is electrically connected;

[0046] Specifically, the brush 507 is electrically connected to the ultrasonic flaw detector 6; a mounting plate 508 is provided on the inner wall of the conductive ring 506; a sliding support block 509 is provided on the side wall of the mounting plate 508 away from the conductive ring 506; a second electric push rod 510 is provided on the side wall of the sliding support block 509 away from the mounting plate 508; the output end of the second electric push rod 510 is transmission-connected to the probe limit assembly 504; the probe limit assembly 504 is provided with an ultrasonic probe 505; the ultrasonic probe 505 is connected to the conductive ring 506 The ring 506 is electrically connected; two groups of baffles 511 are symmetrically provided at the edges of both sides of a side wall of the mounting plate 508 close to the sliding support block 509; a plurality of groups of first return springs 512 are symmetrically provided on the opposite side walls of the two groups of baffles 511; the other end of each group of the first return springs 512 is connected to the corresponding side wall of the sliding support block 509; the mounting plate 508, the sliding support block 509, the second electric push rod 510, the two groups of baffles 511 and the plurality of groups of first return springs 512 are combined to form a connecting component.

[0047] When inspecting pipeline welds, the second electric push rod 510 drives the probe limit assembly 504 toward the pipeline, causing the ultrasonic probe 505 to contact the outer wall of the edge of the pipeline weld. A drive structure is provided in the second mounting ring 501. The drive structure includes a ring gear connected to one end of the conductive ring 506, and a drive motor and gear installed in the second mounting ring 501. When the drive motor is controlled to drive the gear to rotate, due to the engagement between the gear and the ring gear, the ring gear can drive the ultrasonic probe 505 along the weld direction through the conductive ring 506, thereby performing a comprehensive inspection of the weld. During the inspection process, the ultrasonic probe 505 performs ultrasonic testing and sends data to the ultrasonic flaw detector 6 in real time through the conductive ring 506 and the brush 507. During the inspection process, due to the restriction of the wavy annular channel between the two sets of limit rings 503, the ultrasonic probe 505 can perform regular circular motion in a wavy shape to inspect the weld. At the same time, the spacing between the two sets of limit rings 503 can be adjusted as needed to adjust the swing amplitude, thereby avoiding the problem of position offset of the probe during the inspection process, thereby improving the use effect of the ultrasonic inspection device.

[0048] For example, Figure 9 As shown, the probe limiting assembly 504 includes a shell 50401; a sliding groove 50402 is formed on a side wall of the shell 50401 away from the second electric push rod 510; two groups of threaded rods 50403 are provided in the sliding groove 50402; a group of threaded grooves are symmetrically formed on the outer walls of the two groups of threaded rods 50403; two groups of first sliders 50404 are slidably connected to the bottom of the sliding groove 50402; each group of first sliders 50404 is threadedly connected to a corresponding group of threaded grooves; a group of probe clamping plates 50405 is formed on the top of each group of first sliders 50404; each group of probe clamping plates 50405 movably contacts a side wall of the ultrasound probe;

[0049] Specifically, two groups of second sliders 50406 are slidingly connected to the bottom of the slide groove 50402; each group of second sliders 50406 is threadedly connected to a corresponding group of threaded grooves; a group of gas springs 50407 is provided on the top of each group of gas springs 50407; a group of protective shells 50408 are provided on the top of each group of gas springs 50407; two groups of second return springs 50409 are symmetrically provided on the opposite side walls of the two groups of second sliders 50406; the other end of each group of second return springs 50409 is connected to a side wall of a corresponding group of first sliders 50404; a limiting column 50410 is provided at the bottom of the slide groove 50402; the limiting column 50410 is located between the two groups of first sliders 50404.

[0050] When installing the ultrasonic probe 505, the ultrasonic probe 505 is first placed between the two sets of probe clamping plates 50405. Then, the two sets of threaded rods 50403 are controlled to rotate. Under the threaded connection relationship between the two sets of threaded grooves and the two sets of first sliders 50404, the two sets of first sliders 50404 drive the outer walls of the two sets of probe clamping plates 50405 to complete the fixing of the ultrasonic probe 505. The two sets of second return springs 50409 are usually in a compressed state in a normal state. Only when the two sets of probe clamping plates 50405 clamp the ultrasonic probe 505 are they in a stretched state. At this time, the two sets of first sliders 50404 are disengaged from the corresponding threaded grooves, the threaded rods 50403 continue to rotate, and the two sets of second sliders 50406 can drive the two sets of protective shells 50408 to wrap the ultrasonic probe 505 through the two sets of gas springs 50407, thereby preventing external forces from damaging the ultrasonic probe 505 when idle. This not only improves the maintenance efficiency of the ultrasonic testing equipment, but also improves the protective performance of the ultrasonic testing equipment.

[0051] Working principle:

[0052] When performing ultrasonic testing of pipeline welds, the pipeline is first passed through the pipeline guide mechanism 4 and the weld detection mechanism 5, and then the two ends of the pipeline are clamped by two groups of clamping plates 204 respectively. The inner wall of the clamping plate 204 is provided with a limit tooth 205 to prevent the pipeline from rotating. Then, several groups of first electric push rods 402 are controlled to drive several groups of guide blocks 403 to move toward the pipeline, so that several groups of rubber sleeves 405 are in contact with the outer wall of the pipeline. Since the translation plate 201 is movable throughout the mounting seat 1, when the several groups of guide wheels 404 rotate, the friction between the rubber sleeve 405 and the outer wall of the pipeline can drive the pipeline to move horizontally. When the weld of the pipeline moves into the weld detection mechanism 5, the scanning camera 406 can detect it and control the pipeline to stop moving, and then control the second electric push rod 510 to drive the probe limit assembly 504 to move toward the pipeline, so that the ultrasonic probe 505 is in contact with the edge of the pipeline weld. On the outer wall of the edge, a driving structure is provided in the second mounting ring 501, and the driving structure includes a ring gear connected to one end of the conductive ring 506 and a driving motor and gear installed in the second mounting ring 501. When the driving motor is controlled to drive the gear to rotate, due to the engagement of the gear with the ring gear, the ring gear can drive the ultrasonic probe 505 to move along the weld direction through the conductive ring 506, and due to the restriction of the wavy annular channel between the two sets of limit rings 503, the fixed part of the second electric push rod 510 can move in the wavy annular channel under the action of several sets of first return springs 512, so that the ultrasonic probe 505 can perform regular circular motion in a wavy shape to detect the weld. During this process, the ultrasonic probe 505 performs ultrasonic detection and sends data to the ultrasonic flaw detector 6 in real time through the electrical signal connection between the conductive ring 506 and the brush 507, thereby completing the ultrasonic detection of the pipeline weld.

[0053] By controlling the ultrasonic probe 505 to contact the outer wall of the edge of the pipe weld, and then controlling the conductive ring 506 to drive the ultrasonic probe 505 to move along the weld direction, the weld can be comprehensively inspected. In addition, due to the restrictions of the two sets of limit rings 503 during the inspection process, the ultrasonic probe 505 can perform regular circular motion in a wave shape to inspect the weld. At the same time, the spacing between the two sets of limit rings 503 can be adjusted as needed to adjust the swing amplitude, thereby avoiding the problem of position deviation of the probe during the inspection process, thereby improving the use effect of the ultrasonic detection device.

[0054] The two sets of second return springs 50409 are usually in a compressed state under normal conditions, and are only in a stretched state when the two sets of probe clamping plates 50405 clamp the ultrasonic probe 505. At this time, the two sets of first sliders 50404 disengage from the corresponding threaded grooves, and the threaded rod 50403 continues to rotate. The two sets of second sliders 50406 can drive the two sets of protective shells 50408 to wrap the ultrasonic probe 505 through the two sets of gas springs 50407, thereby preventing external forces from damaging the ultrasonic probe 505 when idle, thereby improving not only the maintenance efficiency of the ultrasonic detection equipment, but also the protection performance of the ultrasonic detection equipment.

[0055] By passing the pipeline through the pipeline guide mechanism 4 and the weld detection mechanism 5, and then placing the two ends of the pipeline between the two groups of clamping plates 204 respectively, and then controlling the four groups of first motors 206 to drive the four groups of clamping plates 204 to clamp the two ends of the pipeline, so that several groups of limiting teeth 205 are in contact with the outer wall of the pipeline, and then controlling the pipeline guide mechanism 4 to drive the pipeline to move horizontally, so that the weld detection mechanism 5 can perform annular detection on the pipeline weld, avoiding the need for manual operation and improving the efficiency of weld ultrasonic detection.

[0056] When the pipeline is translated, the pipeline is located in the first mounting ring 401, and several groups of scanning cameras 406 scan the outer wall of the pipeline and control several groups of first electric push rods 402 to drive several groups of guide blocks 403 to move toward the pipeline, so that several groups of rubber sleeves 405 are in contact with the outer wall of the pipeline. Then, several groups of guide wheels 404 are controlled to rotate synchronously to complete the translation of the pipeline, and the telescopic length of the corresponding first electric push rods 402 can be adjusted in real time according to the welding condition of the pipeline to adapt, thereby improving the compatibility of the ultrasonic detection device.

[0057] Based on the above-mentioned guided ultrasonic detection device for pipeline welds, an embodiment of the present invention further provides a detection method for the guided ultrasonic detection device for pipeline welds. Exemplarily, the detection method includes:

[0058] Pass the welded pipe through the pipe guide mechanism and the weld detection mechanism;

[0059] Control the pipeline limit mechanism to fix both ends of the pipeline;

[0060] Control the pipeline guide mechanism to drive the pipeline to move horizontally so that the weld stops when it reaches the detection mechanism;

[0061] Control the weld inspection mechanism to perform annular inspection on the welds of the pipeline;

[0062] Complete ultrasonic testing of pipeline welds.

[0063] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A guided pipeline weld ultrasonic detection device, comprising a mounting seat (1), characterized in that: A pipeline limiting mechanism (2) is movably penetrated on one side wall of the mounting seat (1); a pipeline guiding mechanism (4) and a weld detection mechanism (5) are provided on the top of the mounting seat (1); The pipeline limiting mechanism (2) comprises a translation plate (201); the translation plate (201) is movably inserted into the mounting seat (1); two groups of vertical plates (202) are symmetrically arranged at the edges of both sides of the top of the translation plate (201); two groups of second support plates (203) are symmetrically arranged on the side walls opposite to the top of the two groups of vertical plates (202); and two groups of clamping plates (204) are symmetrically arranged on the top of each group of the second support plates (203); The weld detection mechanism (5) comprises a second mounting ring (501); a mounting groove (502) is provided on the inner wall of the second mounting ring (501); two sets of limit rings (503) are provided at both ends of the mounting groove (502); The opposite ends of the two groups of limit rings (503) are provided with a plurality of limit grooves distributed in an annular array; when the two groups of limit rings (503) are combined, a wavy annular channel is formed; a conductive ring (506) is provided in the installation groove (502); A connecting assembly is provided on the inner wall of the conductive ring (506); a probe limiting assembly (504) is transmission-connected to the output end of the connecting assembly; and an ultrasonic probe (505) is provided on the probe limiting assembly (504); The probe limiting assembly (504) comprises a shell (50401); a slide groove (50402) is provided on a side wall of the shell (50401) away from the second electric push rod (510); two groups of threaded rods (50403) are provided in the slide groove (50402); two groups of first sliders (50404) are slidably connected to the bottom of the slide groove (50402); a group of probe clamping plates (50405) are provided on the top of each group of the first sliders (50404); each group of the probe clamping plates (50405) is movably abutted against the ultrasonic probe (505) on one side wall; two groups of second sliders (50406) are slidably connected at the bottom of the slide groove (50402); a group of gas springs (50407) are provided on the top of each group of the second sliders (50406); a group of protective shells (50408) are provided on the top of each group of the gas springs (50407); two groups of second return springs (50409) are symmetrically provided on the opposite side walls of the two groups of the second sliders (50406); the other end of each group of the second return springs (50409) is connected to a side wall of a corresponding group of the first sliders (50404); The conductive ring (506) is controlled to rotate to drive the ultrasonic probe (505) to perform ultrasonic detection along a wave-shaped circular motion trajectory in the direction of the pipeline weld.

2. The guided pipeline weld ultrasonic detection device according to claim 1, characterized in that: The cross-section of each group of clamping plates (204) is a fan-shaped ring, and a plurality of groups of limiting teeth (205) are provided at equal intervals on the inner wall.

3. The guided pipeline weld ultrasonic detection device according to claim 1, characterized in that: The pipeline guide mechanism (4) comprises a first mounting ring (401); a mounting cavity (407) is provided in the first mounting ring (401); a plurality of groups of first electric push rods (402) are distributed in a ring array on the inner wall of the mounting cavity (407); the output end of each group of the first electric push rods (402) extends into the first mounting ring (401) and is transmission-connected to a group of guide blocks (403).

4. The guided pipeline weld ultrasonic detection device according to claim 3 is characterized in that: A group of guide wheels (404) is provided on a side wall of each group of guide blocks (403) away from a corresponding group of first electric push rods (402); a group of rubber sleeves (405) are sleeved on the outer wall of each group of guide wheels (404); and a plurality of groups of scanning cameras (406) are distributed in a circular array on the inner wall of the first mounting ring (401).

5. The guided pipeline weld ultrasonic detection device according to claim 1, characterized in that: The connecting assembly comprises a mounting plate (508); the mounting plate (508) is mounted on the inner wall of the conductive ring (506); a sliding support block (509) is provided on a side wall of the mounting plate (508) away from the conductive ring (506); a second electric push rod (510) is provided on a side wall of the sliding support block (509) away from the mounting plate (508); an output end of the second electric push rod (510) is transmission-connected to the probe limit assembly (504).

6. The guided pipeline weld ultrasonic detection device according to claim 5, characterized in that: A brush (507) is provided in the mounting groove (502); the brush (507) is movably fitted to the outer wall of the conductive ring (506) and is electrically connected; the brush (507) is electrically connected to the ultrasonic flaw detector (6); the ultrasonic probe (505) is electrically connected to the conductive ring (506); two groups of baffles (511) are symmetrically provided at the edges of both sides of a side wall of the mounting plate (508) close to the sliding support block (509); a plurality of groups of first return springs (512) are symmetrically provided on the side walls opposite to the two groups of baffles (511); and the other end of each group of the first return springs (512) is connected to the corresponding side wall of the sliding support block (509).

7. The guided pipeline weld ultrasonic detection device according to claim 1, characterized in that: A group of threaded grooves are symmetrically provided on the outer walls of the two groups of threaded rods (50403).

8. The guided pipeline weld ultrasonic detection device according to claim 7, characterized in that: Each group of the first sliding blocks (50404) is threadedly connected to a corresponding group of thread grooves.

9. The guided pipeline weld ultrasonic detection device according to claim 8, characterized in that: Each group of the second sliding blocks (50406) is threadedly connected to a corresponding group of threaded grooves; a limiting column (50410) is provided at the bottom of the sliding groove (50402); and the limiting column (50410) is located between the two groups of first sliding blocks (50404).

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