CN115541697B - Oil gas pipeline magnetic leakage detection probe - Google Patents
Oil gas pipeline magnetic leakage detection probe Download PDFInfo
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- CN115541697B CN115541697B CN202211445760.4A CN202211445760A CN115541697B CN 115541697 B CN115541697 B CN 115541697B CN 202211445760 A CN202211445760 A CN 202211445760A CN 115541697 B CN115541697 B CN 115541697B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
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Abstract
The invention relates to the technical field of pipeline detection, and discloses an oil and gas pipeline magnetic flux leakage detection probe, which comprises a shell, a handle, a sliding frame, a fixed frame, a telescopic machine, a fixed seat and the like; the one end of shell is equipped with the handle, slides in the shell and is equipped with the slip frame, is fixed with the mount on the shell, is equipped with the telescopic machine between shell and the slip frame, and the telescopic machine can release the slip frame, is fixed with the fixing base on the slip frame, adds magnetic mechanism and installs on the fixing base, adds magnetic mechanism and is used for the additional magnetism of pipeline, and detection mechanism installs on the fixing base, and detection mechanism is used for detecting the situation of change of the interior magnetic field of pipeline. Through adding magnetic mechanism and pipeline contact in this application, make the inside magnetic field that forms of pipeline, observe the condition of the interior magnetic field of pipeline through detection mechanism afterwards, if the magnetic leakage phenomenon then proves that the pipe wall at magnetic leakage position appears unusually, equipment is comparatively light alright handheld by measurement personnel, has improved detection efficiency.
Description
Technical Field
The invention relates to the technical field of pipeline detection, in particular to a magnetic flux leakage detection probe for an oil and gas pipeline.
Background
The magnetic leakage detection is that after the ferromagnetic material is magnetized, a magnetic leakage field is formed on the surface of the ferromagnetic material due to the defects on the surface or near the surface of the piece to be detected, people can find the defects by detecting the change of the magnetic leakage field, the magnetic leakage detection is often used for detecting metal loss defects such as corrosion and mechanical damage of the inner wall and the outer wall of an oil and gas pipeline, the requirement on the cleanliness of the detected pipeline is low, and the magnetic leakage detection can be used for oil and gas pipelines.
In the factory workshop, the oil gas pipeline sets up at the eminence usually, prior art carries check out test set by testing personnel when detecting the oil gas pipeline of eminence generally and climbs the eminence after, earlier wrap up the probe that uses the detection in the pipeline outside, use the permanent magnet to give magnetism to the pipeline afterwards, just so can detect the magnetic field that the outer wall of pipeline produced through the probe for the detection, later remove along the pipeline by testing personnel again, the outer wall removal of simultaneous control check out test set along the pipeline, in-process testing personnel that remove need control the permanent magnet all the time and paste tight pipeline outer wall, avoid permanent magnet and pipeline outer wall to break away from the contact and influence the testing result.
Disclosure of Invention
The invention provides an oil and gas pipeline magnetic flux leakage detection probe capable of detecting from the outside, and aims to solve the problems.
The technical scheme of the invention is as follows: oil gas pipeline magnetic leakage test probe, which comprises an outer shell, the handle, the sliding frame, the mount, the expansion bracket, a fixed base, compression spring, add magnetic mechanism and detection mechanism, the one end of shell is equipped with the handle, it is equipped with the sliding frame to slide in the shell, be fixed with the mount on the shell, be equipped with the expansion bracket between shell and the sliding frame, the expansion bracket can release the sliding frame, be fixed with the fixing base on the sliding frame, it installs on the fixing base to add magnetic mechanism, it is used for adding magnetism for the pipeline, it is equipped with compression spring to add between magnetic mechanism and the fixing base, compression spring can make and paste tightly on the outer wall of pipeline with magnetic mechanism, detection mechanism installs on the fixing base, detection mechanism is used for detecting the situation of change of the magnetic field in the pipeline.
Further, add magnetic mechanism including adding the magnetism layer board, slip post and mark subassembly, the slip is equipped with the slip post on the fixing base, and the one end fixedly connected with of slip post adds the magnetism layer board, adds and is equipped with compression spring between magnetism layer board and the fixing base, and the mark subassembly is installed on the fixing base, and the mark subassembly is used for scribbling the mark for detecting the pipeline that finishes and do not have the problem.
Further, the mark subassembly includes electric putter, the dwang, the rotating clamp plate, the carriage, reset spring and scribbles the mark gyro wheel, rotate on the fixing base and be connected with electric putter, connect the dwang on electric putter's the telescopic link, it is provided with the carriage to slide on the layer board to add magnetism, the carriage with add and be connected with reset spring between the layer board, rotate on the carriage and be equipped with the rotating clamp plate, the dwang with add the magnetism layer board and rotate and be connected, the other end of dwang rotates and sets up on the rotating clamp plate, rotate on the rotating clamp plate and be equipped with and scribble the mark gyro wheel.
Further, detection mechanism rotates the frame including the right turn, the spring telescopic link, the frame rotates on a left side, the limiting plate, the slip detection pole, top tension spring and roll detection wheel, it is equipped with the frame and rotates the frame to rotate on the fixing base on a left side, it is connected with the spring telescopic link to rotate the frame and rotate on a left side between frame and the frame and slide the frame, it all is equipped with the limiting plate to rotate the frame on a left side and rotate on the right side in the frame, the limiting plate rotates the frame and rotates on a left side and rotates on the right side and all be equipped with the slip detection pole between the frame, the one end of slip detection pole is equipped with the roll detection wheel, be equipped with a top tension spring between slip detection pole and the limiting plate.
Further, the position of the limiting plates in the left rotating frame and the right rotating frame is adjustable to detect pipes with different diameters.
Furthermore, the detection mechanism also comprises a mark spray head, and the mark spray head is arranged on the sliding detection rod.
Furthermore, the sliding frame further comprises a display screen, a fan, an air outlet pipe and a camera, the display screen is installed on the handle, the fan is installed in the sliding frame, the air outlet pipe is arranged on the fan, and the camera is further installed in the sliding frame.
Furthermore, go out in tuber pipe and the camera all wrapped up the sliding frame, avoid camera and pipeline touching and breakage.
The beneficial effects are that: 1. through adding magnetism mechanism and pipeline contact in this application, make the inside magnetic field that forms of pipeline, observe the condition of magnetic field in the pipeline through detection mechanism afterwards, if the magnetic leakage phenomenon then proves that the pipe wall at magnetic leakage position appears unusually, equipment is comparatively light alright handheld by the measurement personnel, has improved detection efficiency.
2. When adding magnetism layer board and pipeline contact, will form the magnetic field in the pipeline, along with the measurement personnel removes along the pipeline, add magnetism layer board and contact with the outer wall of pipeline all the time, there is the magnetic field in the messenger pipeline all the time, realizes adding the magnetic function.
3. After the detection is finished, if the detection is qualified, the electric push rod is controlled to drive the rotating clamp plate and the marking roller to coat a mark on the outer wall of the pipeline, and if the detection is unqualified, a repairing person manually adds a mark after the repair is finished, so that repeated detection is avoided.
4. When the detection device is used for detecting, the rolling detection wheel wraps the pipeline, the pipeline is subjected to omnibearing detection, the phenomenon of leakage detection is avoided, the tight spring in the pushing process of the detection always enables the rolling detection wheel to be attached to the outer wall of the pipeline, and the phenomenon that the rolling detection wheel is separated from the outer wall of the pipeline to be contacted and the detection result is influenced in the moving process is avoided.
5. The part with magnetic leakage can be sprayed with marks through the marking spray head during detection, so that the follow-up repair of maintenance personnel is facilitated.
6. The position of the limiting plate can be adjusted, and pipelines with different diameters can be conveniently detected.
7. In-process of propelling movement detection mechanism, the camera can be shot near the condition in pipeline and transmit the display screen on, and the measurement personnel passes through display screen control detection mechanism's orientation, and the user equipment is more convenient, and camera and play tuber pipe are all wrapped up in the sliding frame, can avoid camera and external collision and damaged, all play the guard action to camera and play tuber pipe.
Drawings
Fig. 1 is a schematic structural view of the whole of the present invention.
Fig. 2 is an exploded view of the housing and the sliding frame according to the present invention.
Fig. 3 is a schematic cross-sectional view of the sliding frame according to the present invention.
Fig. 4 is a schematic structural diagram of the detecting mechanism and the magnetizing mechanism of the present invention.
Fig. 5 is a schematic structural diagram of the magnetizing mechanism of the present invention.
Fig. 6 is a schematic structural view of the rotating splint of the present invention.
FIG. 7 is a schematic view of the detecting mechanism of the present invention.
Fig. 8 is a schematic view of the structure of the slide detecting lever of the present invention.
Part names and serial numbers in the figure: 1. the device comprises a shell, 101, a handle, 102, a display screen, 2, a sliding frame, 201, a fixed frame, 202, an expansion bracket, 3, a fan, 301, an air outlet pipe, 302, a camera, 4, a fixed seat, 401, an electric push rod, 402, a magnetizing supporting plate, 403, a sliding column, 404, a compression spring, 405, a rotating rod, 406, a rotating clamping plate, 407, a sliding frame, 408, a reset spring, 409, a marking roller, 5, a right rotating frame, 501, a spring telescopic rod, 502, a left rotating frame, 503, a limiting plate, 504, a sliding detection rod, 505, a jacking spring, 506, a rolling detection wheel, 507 and a marking nozzle.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example 1
An oil and gas pipeline magnetic leakage detection probe is shown in figures 1-8 and comprises a shell 1, a handle 101, a sliding frame 2, a fixing frame 201, an expansion bracket 202, a fixing seat 4, a compression spring 404, a magnetism adding mechanism and a detection mechanism, wherein the handle 101 is arranged at one end of the shell 1, the shell 1 and the handle 101 are L-shaped and are convenient for detection personnel to use, the sliding frame 2 is arranged in the shell 1 in a sliding mode, the fixing frame 201 is fixed on the shell 1, the expansion bracket 202 is arranged between the shell 1 and the sliding frame 2 and can push the sliding frame 2 out, the farthest distance of the expansion bracket 202 can be increased according to conditions, the fixing seat 4 is fixed on the sliding frame 2, the fixing seat 4 moves along with the sliding frame 2, the magnetism adding mechanism is installed on the fixing seat 4 and is used for adding magnetism to a pipeline, the compression spring 404 is arranged between the magnetism adding mechanism and the fixing seat 4, the compression spring 404 can enable the magnetism adding mechanism to be tightly attached to the outer wall of the pipeline, the detection mechanism is installed on the fixing seat 4, and the detection mechanism is used for detecting the change condition of a magnetic field in the pipeline.
Examine time measuring, handle 101 is handed by the inspection personnel, aim at the detection mechanism with the detection mechanism afterwards and wait to detect the pipeline, start expansion bracket 202, expansion bracket 202 is with sliding frame 2 outwards propelling movement to the casing, can drive when sliding frame 2 removes and add magnetic mechanism and detection mechanism and remove, add magnetic mechanism and detection mechanism and draw close to waiting to detect the pipeline along with sliding frame 2 gradually, can add the magnetism to the pipeline when adding magnetic mechanism and waiting to detect the pipeline contact, detection mechanism can wrap up the pipeline afterwards, the handheld test probe of inspection personnel moves along the pipeline after along, shell 1 drives sliding frame 2, add magnetic mechanism and detection mechanism and move along the outer wall of pipeline, detect the pipeline, realize the function of detecting the pipeline.
As shown in fig. 3-6, the magnetism adding mechanism includes a magnetism adding supporting plate 402, a sliding column 403 and a marking component, the sliding column 403 is slidably disposed on the fixing base 4, one end of the sliding column 403 is fixedly connected with the magnetism adding supporting plate 402, the magnetism adding supporting plate 402 is a permanent magnet, a magnetic field can be generated in the pipeline after the magnetism adding supporting plate 402 contacts with the pipeline, a compression spring 404 is disposed between the magnetism adding supporting plate 402 and the fixing base 4, the compression spring 404 is sleeved on the sliding column 403, two ends of the compression spring 404 are respectively fixed on the magnetism adding supporting plate 402 and the fixing base 4, the magnetism adding supporting plate 402 always contacts with the outer wall of the pipeline under the action of the compression spring 404, the marking component is mounted on the fixing base 4, and the marking component is used for marking the pipeline which is detected and has no problem.
As shown in fig. 4 to 6, the marking assembly includes an electric putter 401, a rotation rod 405, a rotation clamp plate 406, a sliding frame 407, a return spring 408 and a marking roller 409, the electric putter 401 is rotatably connected to the fixing base 4, the rotation rod 405 is connected to a telescopic rod of the electric putter 401, the rotation rod 405 is slidably and rotatably connected to two ends of the magnetized support plate 402, the sliding frame 407 is slidably disposed on the magnetized support plate 402, the return spring 408 is connected between the sliding frame 407 and the magnetized support plate 402, two ends of the return spring 408 are respectively fixed to the magnetized support plate 402 and the sliding frame 407, the rotation clamp plate 406 is rotatably disposed on the sliding frame 407, the rotation rod 405 is rotatably connected to the magnetized support plate 402, the other end of the rotation rod 405 is rotatably disposed on the rotation clamp plate 406, the rotation clamp plate 406 rotates around a hinge point, the rotation clamp plate 406 can be tightly attached to the outer wall of the pipeline, the rotation clamp plate 406 is rotatably disposed with the marking roller 409, and the marking roller 409 can apply a mark when moving along the outer wall of the pipeline.
When the rotating clamp plate 406 moves towards the pipeline to be detected, the electric push rod 401 is started, the telescopic rod of the electric push rod 401 is retracted, the electric push rod 401 enables the rotating clamp plate 406 to be outwards turned over through the rotating rod 405, then the electric push rod 401 is closed, after the pipeline is detected, if the detected pipeline has no problem, the electric push rod 401 is started, the telescopic rod of the electric push rod 401 extends outwards, the rotating clamp plate 406 rotates on the sliding frame 407 and is attached to the outer wall of the pipeline under the pushing action of the rotating rod 405, then the rotating clamp plate 406 drives the rotating rod 405 to move along the pipeline along with the continuous outward extension of the electric push rod 401, meanwhile, the sliding frame 407 is upwards pulled, the return spring 408 is contracted, the marking roller 409 on the inner side of the rotating clamp plate 406 can mark the outer wall of the pipeline during moving, then the electric push rod 401 is controlled to downwards pull the rotating clamp plate 406 back to the original position through the rotating rod 405, the sliding frame 407 and the return spring 408 are restored, and when the rotating clamp plate 406 is separated from the marking roller 409 and is separated from the pipeline, then the handle 101 is held by a detection person to detect the pipeline, and the function of marking on the pipeline without the outer mark of the pipeline is realized.
As shown in fig. 7-8, the detection mechanism includes a right rotation frame 5, a spring expansion link 501, a left rotation frame 502, a limiting plate 503, a sliding detection rod 504, a tightening spring 505 and a rolling detection wheel 506, the fixing base 4 is rotatably provided with the left rotation frame 502 and the right rotation frame 5, the spring expansion link 501 is connected between the left rotation frame 502, the right rotation frame 5 and the sliding frame 2, the spring expansion link 501 supports the left rotation frame 502 and the right rotation frame 5, the limiting plate 503 is respectively arranged in the left rotation frame 502 and the right rotation frame 5, the sliding detection rod 504 is respectively arranged between the limiting plate 503 and the left rotation frame 502 and the right rotation frame 5, the sliding detection rod 504 can slide on the left rotation frame 502 and the right rotation frame 5, one end of the sliding detection rod 504 is provided with the rolling detection wheel 506, a sensor is arranged in the rolling detection wheel 506 to detect the magnetic field condition inside the pipeline, the tightening spring 505 is arranged between the sliding detection rod 504 and the limiting plate 503, two ends of the tightening spring 505 are respectively fixed on the sliding detection rod 504 and the limiting plate 503, and the tightening spring 506 can make the pipe always tightly adhere to the rolling detection wheel 506.
Along with expansion bracket 202 outwards stretches out gradually, roll and detect wheel 506 and can earlier with the pipeline contact, roll and detect wheel 506 and can remove and will slide detection pole 504 and release to the outside along the outer wall of pipeline, top tension spring 505 is compressed, spring telescopic link 501 can rotate frame 502 and the top of the frame 5 that rotates on the left side this moment, avoid rotating frame 502 and the frame 5 that rotates on the right side to rotate to both sides because of the elasticity of top tension spring 505 and open, top tension spring 505 can make roll and detect wheel 506 and paste tightly with the outer wall of pipeline all the time, it detects the pipeline to make things convenient for roll to detect wheel 506, realize the function whether the detection pipeline leaks magnetic flux.
As shown in fig. 7, the positions of the limiting plates 503 in the left and right rotating frames 502 and 5 are adjustable to detect pipes of different diameters; when the diameter of the pipeline is larger, the limiting plates 503 can be adjusted outwards, so that the distance between the two limiting plates 503 in the left rotating frame 502 and the right rotating frame 5 can be just larger than the diameter of the pipeline, and the device can detect pipelines with various diameters.
As shown in fig. 8, the detection mechanism further includes a mark nozzle 507, and the mark nozzle 507 is mounted on the sliding detection rod 504; when the rolling detection wheel 506 detects the magnetic flux leakage position on the pipeline, the marking spray head 507 sprays the spraying material used for marking outwards to make a mark, so that subsequent maintenance personnel can maintain the pipeline conveniently.
As shown in fig. 2-3, the sliding frame 2 further includes a display screen 102, a fan 3, an air outlet pipe 301 and a camera 302, the display screen 102 is installed on the handle 101, the fan 3 is installed in the sliding frame 2, the air outlet pipe 301 is installed on the fan 3, the fan 3 blows air outwards through the air outlet pipe 301 to remove sundries attached to the pipeline, so that the magnetic supporting plate 402 can be attached to the pipeline, the camera 302 is also installed in the sliding frame 2, and the camera 302 is communicated with the display screen 102.
In the process of the extension of expansion bracket 202, during the scene that camera 302 will shoot transmitted display screen 102, detection personnel observed the position of detection mechanism and pipeline through display screen 102, when there was debris influence the sight on the pipeline, fan 3 blew debris through the outside blowout air current of tuber pipe 301 for detection personnel can be more convenient observe the near situation of pipeline, avoid equipment and pipeline to collide as far as possible.
As shown in fig. 3, the air outlet pipe 301 and the camera 302 are both wrapped in the sliding frame 2, so as to prevent the camera 302 from being broken due to the contact with the pipeline; the sliding frame 2 wraps up the camera 302 and the air outlet pipe 301, and a circle of protective shell is arranged outside the camera 302 and the air outlet pipe 301, so that the camera 302 and the air outlet pipe 301 can be protected, the camera 302 is prevented from being directly collided with a pipeline and damaged, meanwhile, sundries can be prevented from entering the air outlet pipe 301, the air blowing effect is influenced, and the functions of protecting the camera 302 and the air outlet pipe 301 are realized.
While the disclosure has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that various other embodiments can be devised which do not depart from the scope of the invention as disclosed herein. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (5)
1. Oil gas pipeline magnetic leakage test probe, including shell (1) and handle (101), the one end of shell (1) is equipped with handle (101), characterized by: the pipeline magnetizing device is characterized by further comprising a sliding frame (2), a fixing frame (201), an expansion frame (202), a fixing seat (4), a compression spring (404), a magnetizing mechanism and a detection mechanism, wherein the sliding frame (2) is arranged in the shell (1) in a sliding mode, the fixing frame (201) is fixed on the shell (1), the expansion frame (202) is arranged between the shell (1) and the sliding frame (2), the sliding frame (2) can be pushed out by the expansion frame (202), the fixing seat (4) is fixed on the sliding frame (2), the magnetizing mechanism is installed on the fixing seat (4), the magnetizing mechanism is used for adding magnetism to a pipeline, the compression spring (404) is arranged between the magnetizing mechanism and the fixing seat (4), the compression spring (404) can enable the magnetizing mechanism to be attached to the outer wall of the pipeline tightly, the detection mechanism is installed on the fixing seat (4), and the detection mechanism is used for detecting the change situation of a magnetic field in the pipeline;
the magnetizing mechanism comprises a magnetizing supporting plate (402), a sliding column (403) and a marking assembly, the sliding column (403) is arranged on the fixed seat (4) in a sliding mode, one end of the sliding column (403) is fixedly connected with the magnetizing supporting plate (402), a compression spring (404) is arranged between the magnetizing supporting plate (402) and the fixed seat (4), the marking assembly is installed on the fixed seat (4), and the marking assembly is used for coating marks on pipelines which detection is finished and no problem occurs;
the marking assembly comprises an electric push rod (401), a rotating rod (405), a rotating clamping plate (406), a sliding frame (407), a reset spring (408) and a marking roller (409), the electric push rod (401) is connected to the fixed seat (4) in a rotating mode, the telescopic rod of the electric push rod (401) is connected with the rotating rod (405), the magnetic applying supporting plate (402) is provided with the sliding frame (407) in a sliding mode, the reset spring (408) is connected between the sliding frame (407) and the magnetic applying supporting plate (402), the rotating clamping plate (406) is arranged on the sliding frame (407) in a rotating mode, the rotating rod (405) is connected with the magnetic applying supporting plate (402) in a rotating mode, the other end of the rotating rod (405) is arranged on the rotating clamping plate (406) in a rotating mode, and the marking roller (409) is arranged on the rotating clamping plate (406) in a rotating mode;
the detection mechanism comprises a right rotating frame (5), a spring telescopic rod (501), a left rotating frame (502), a limiting plate (503), a sliding detection rod (504), a jacking spring (505) and a rolling detection wheel (506), wherein the left rotating frame (502) and the right rotating frame (5) are arranged on the fixed seat (4) in a rotating mode, the spring telescopic rod (501) is connected between the left rotating frame (502) and the sliding frame (2) and between the right rotating frame (5) and the sliding frame (2), the limiting plate (503) is arranged in the left rotating frame (502) and the right rotating frame (5), the sliding detection rod (504) is arranged between the limiting plate (503) and the left rotating frame (502) and between the limiting plate (503) and the right rotating frame (5), the rolling detection wheel (506) is arranged at one end of the sliding detection rod (504), and the jacking spring (505) is arranged between the sliding detection rod (504) and the limiting plate (503).
2. The oil and gas pipeline magnetic flux leakage detection probe of claim 1, which is characterized in that: the position of the limiting plate (503) in the left rotating frame (502) and the right rotating frame (5) can be adjusted to detect pipelines with different diameters.
3. The oil and gas pipeline magnetic flux leakage detection probe of claim 1, which is characterized in that: the detection mechanism also comprises a mark spray head (507), and the mark spray head (507) is arranged on the sliding detection rod (504).
4. The oil and gas pipeline magnetic flux leakage detection probe of claim 1, which is characterized in that: the sliding frame (2) further comprises a display screen (102), a fan (3), an air outlet pipe (301) and a camera (302), the display screen (102) is installed on the handle (101), the fan (3) is installed in the sliding frame (2), the air outlet pipe (301) is arranged on the fan (3), and the camera (302) is further installed in the sliding frame (2).
5. The oil and gas pipeline magnetic flux leakage detection probe of claim 4, which is characterized in that: go out tuber pipe (301) and camera (302) and all by in parcel sliding frame (2), avoid camera (302) and pipeline touching and breakage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211445760.4A CN115541697B (en) | 2022-11-18 | 2022-11-18 | Oil gas pipeline magnetic leakage detection probe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211445760.4A CN115541697B (en) | 2022-11-18 | 2022-11-18 | Oil gas pipeline magnetic leakage detection probe |
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| CN115541697B true CN115541697B (en) | 2023-03-07 |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS606757Y2 (en) * | 1976-09-13 | 1985-03-05 | 株式会社ケツト科学研究所 | Traveling pipe inspection device |
| US4217548A (en) * | 1977-06-24 | 1980-08-12 | Sumitomo Kinzoku Kogyo Kabushiki Kaisha | Flaw detector for pipe employing magnets located outside the pipe and detector mounted inside and movable along the pipe with the magnets |
| JP3777103B2 (en) * | 2000-06-12 | 2006-05-24 | 株式会社日立ビルシステム | Support jig for movable object damage detector |
| CN201867393U (en) * | 2010-11-08 | 2011-06-15 | 中国石油大学(北京) | Pipe fitting outer surface detecting device |
| CN104458892B (en) * | 2014-12-08 | 2018-01-02 | 厦门大学 | A kind of steel profile defect detecting device |
| CN204629109U (en) * | 2014-12-24 | 2015-09-09 | 中国石油天然气集团公司 | A kind of probe mechanism and pipe leakage corrosion detector |
| CN207051238U (en) * | 2017-07-03 | 2018-02-27 | 中设（深圳）设备检验检测技术有限公司 | A kind of high-altitude steel wire rope leakage magnetic detection device |
| CN109406618B (en) * | 2018-10-18 | 2021-08-06 | 科大智能物联技术股份有限公司 | Petroleum pipeline defect detection system and control method |
| CN109459488A (en) * | 2018-12-25 | 2019-03-12 | 无锡华工大光电智能科技有限公司 | Continuous pipe on-line measuring device |
| CN109827039A (en) * | 2019-03-12 | 2019-05-31 | 中国矿业大学 | A kind of probe follow-up device for Magnetic Flux Leakage Inspecting pipe-line defect |
| CN213181371U (en) * | 2020-08-28 | 2021-05-11 | 沈阳仪表科学研究院有限公司 | Magnetic flux leakage detection device of oil and gas pipeline |
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