CN111830123B - Pipeline detection device based on rotating electromagnetic field - Google Patents
Pipeline detection device based on rotating electromagnetic field Download PDFInfo
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- CN111830123B CN111830123B CN202010683010.5A CN202010683010A CN111830123B CN 111830123 B CN111830123 B CN 111830123B CN 202010683010 A CN202010683010 A CN 202010683010A CN 111830123 B CN111830123 B CN 111830123B
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- detection device
- pipeline
- shaft
- electromagnetic field
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- G—PHYSICS
- 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
- G01N27/84—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 by applying magnetic powder or magnetic ink
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
- F16L55/30—Constructional aspects of the propulsion means, e.g. towed by cables
- F16L55/32—Constructional aspects of the propulsion means, e.g. towed by cables being self-contained
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/30—Inspecting, measuring or testing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention discloses a pipeline detection device based on a rotating electromagnetic field, which comprises a detection device body, wherein a servo motor is fixedly arranged in the detection device body, screw rods are arranged on two sides of the servo motor in a transmission way, second nuts are arranged on the surfaces of the screw rods in a threaded connection way, shaft-driven connecting rods are arranged on the surfaces of two sides of the second nuts in a shaft-driven connection way, a fixing plate is arranged at one end of each shaft-driven connecting rod in a shaft-driven connection way, a plurality of supporting rods are fixedly arranged on the surfaces of the fixing plate, a driving motor is fixedly arranged on one end surface of each supporting rod, a roller is arranged on one side of each driving motor in a transmission way, and through adjusting the size of direct current, leakage magnetic field signals of all damage defects of the pipe wall of a detected pipeline can reach optimal magnetization intensity so as to ensure the accuracy of detection of all damage defects of the detected pipeline by the pipeline leakage magnetic internal detection device, thereby improving detection efficiency, being scientific and reasonable in structure, being safe and convenient to use, and providing great help for people.
Description
Technical Field
The invention relates to a pipeline detection device, in particular to a pipeline detection device based on a rotating electromagnetic field.
Background
Pipes are devices for transporting gas, liquid or fluid with solid particles, which are coupled by pipes, pipe couplings, valves, etc. In general, after the fluid is pressurized by a blower, a compressor, a pump, a boiler, etc., the fluid flows from a high pressure place to a low pressure place of a pipeline, and the fluid can be conveyed by the pressure or gravity of the fluid. The piping is used in a wide variety of applications, mainly in water supply, water drainage, heat supply, gas supply, long distance transportation of petroleum and natural gas, agricultural irrigation, hydraulic engineering and various industrial devices. Determination of pipe-pipe diameter when the flow rate of the fluid is known, the size of the pipe diameter depends on the allowable flow rate or allowable frictional resistance (pressure drop). The pipe diameter is small when the flow rate is large, but the pressure drop value is increased. Therefore, when the flow rate is high, the investment for pipeline infrastructure can be saved, but the operation energy consumption of power equipment such as pumps, compressors and the like is increased. In addition, if the flow rate is too high, there may be some other adverse factors. Therefore, the pipe diameter should be determined by comprehensive consideration of construction investment, operation cost and other technical factors. The method for connecting pipes, pipe connectors, valves and inlet and outlet pipes on equipment is determined by the nature, pressure and temperature of fluid, the material, size and installation site of the pipes and mainly comprises 4 methods of threaded connection, flange connection, socket connection and welding, etc. (1) threaded connection: is mainly suitable for small-diameter pipelines. In connection, a fluoroplastic sealing tape or a thick paint, hemp threads and other sealing materials are generally wound on the threaded connection part to prevent leakage. At pressures above 1.6 mpa, the tube end is typically sealed with gaskets. The connecting method is simple and can be disassembled and reassembled, but the movable joint is required to be installed at a proper position of the pipeline so as to facilitate the disassembly and assembly.
With the continuous progress of technology, the magnetic leakage detection method adopting direct-current coil excitation becomes a new method in field detection, and the method belongs to an electromagnetic nondestructive detection method, and the existing pipeline detection device cannot detect the inside of a pipeline, so that defects, gaps and corrosion parts in the pipeline cannot be detected, and the detection of the inside of some long pipelines by the pipeline detection device is more inconvenient.
Disclosure of Invention
The invention aims to overcome the existing defects and provide a pipeline detection device based on a rotating electromagnetic field, so that the problems are solved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a pipeline detection device based on rotatory electromagnetic field, includes the detection device body, the inside fixed servo motor that is equipped with of detection device body, servo motor both sides transmission is equipped with the lead screw, lead screw surface threaded connection is equipped with the second nut, second nut both sides surface shaft moves the connection and is equipped with the shaft and moves the connecting rod, the shaft moves connecting rod one end shaft and moves the connection and be equipped with the fixed plate, fixed plate surface fixed is equipped with a plurality of bracing piece, bracing piece one end surface fixed is equipped with driving motor, driving motor one side transmission is equipped with the gyro wheel, fixed plate both sides surface fixed is equipped with a plurality of second sliding sleeve, the inside slip of second sliding sleeve is equipped with the second sliding rod, and second sliding rod both ends and the inboard fixed surface of detection device body are connected, detection device body one end surface fixed is equipped with the shaft and moves the connecting piece, shaft moves connecting piece surface shaft and is equipped with the pipeline, pipeline surface fixed is equipped with the yoke, yoke surface fixed is equipped with a plurality of permanent magnet surface fixed electromagnetic device, electromagnetic device surface moves the connection and is equipped with the metal pole, metal pole one end shaft moves the connection and is equipped with the brush, first sliding sleeve is equipped with first sliding sleeve surface laminating spring surface, one side is equipped with first sliding sleeve.
As a preferable technical scheme of the invention, the surface of the first sliding rod is provided with threads, and the threaded surface is provided with a first nut in a threaded connection manner.
As a preferable technical scheme of the invention, the insulating support rod is made of plastic material, and one end of the insulating support rod is axially connected to the surface of the middle section of the metal rod.
As a preferable technical scheme of the invention, the surface of the roller is provided with a rubber anti-slip layer, and the driving motor is connected with the roller through a transmission rotating shaft.
As a preferable technical scheme of the invention, the surface of the detection device body is fixedly provided with a plurality of light supplementing lamps which are annularly arranged.
As a preferable technical scheme of the invention, the surface of the detection device body is fixedly provided with a camera, and the camera is in wireless connection with the terminal through a wireless transmitter.
As a preferable technical scheme of the invention, screw rods are arranged on two sides of the servo motor in a transmission way, and the screw threads on the surfaces of the screw rods are opposite in direction.
As a preferable technical scheme of the invention, the electromagnetic device and the metal rod are made of conductive metal materials.
As a preferable technical scheme of the invention, a storage battery is arranged in the detection device body, and the electromagnetic device, the servo motor, the light supplementing lamp, the camera and the driving motor are all powered by the storage battery.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the pipeline detection device based on the rotating electromagnetic field, the servo motor drives the screw rod to rotate according to the diameter of a pipeline, so that the screw rod is driven to move, the screw rod slides on the surface of the second sliding rod through the second sliding sleeve with the two fixed end surfaces, so that the supporting rod on the surface of the fixed plate is driven to shrink, the roller is driven to shrink, the length is adjusted, the pipeline with different diameters can be adapted, meanwhile, the first nut is rotated to move on the threaded surface, the first nut is enabled to extrude the first sliding sleeve to slide on the surface of the first sliding rod, the metal rod is driven to rotate through the insulating supporting rod, the position of the steel brush is adjusted, and the diameter of the matched pipeline is adjusted;
2. the pipeline detection device based on the rotating electromagnetic field enables the steel brush to be attached to the inner side surface of the pipeline, the detection device body is plugged into the pipeline, the driving motor drives the roller to rotate, so that the electromagnetic device is driven to move, the permanent magnets on the surface of the yoke are electrified, steel wires of the steel brush are fixed on the outer peripheral surface of the yoke in a cluster, so that magnetic force lines conducted by the yoke can be uniformly and smoothly led into the steel brush and finally transferred to the pipeline wall of the pipeline to be detected, a closed-loop magnetic field circuit is formed, and through adjusting the direct current, leakage magnetic field signals of all damage defects of the pipeline wall of the pipeline to be detected can reach optimal magnetization intensity, so that the pipeline leakage magnetic field inner detection device is guaranteed to be accurate in detecting various damage defects of the pipeline to be detected, detection efficiency is improved, the structure is scientific and reasonable, use is safe and convenient, and great help is provided for people.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
In the drawings:
FIG. 1 is a schematic diagram of the internal structure of a pipe detection device based on a rotating electromagnetic field according to the present invention;
FIG. 2 is a schematic diagram of an electromagnetic device of a pipeline detection device based on a rotating electromagnetic field according to the present invention;
FIG. 3 is a schematic diagram of the front structure of a pipe detection device based on a rotating electromagnetic field according to the present invention;
FIG. 4 is a schematic diagram of a surface structure of a pipe detection device based on a rotating electromagnetic field according to the present invention;
fig. 5 is a schematic diagram of a local structure of a pipe detection device based on a rotating electromagnetic field according to the present invention.
In the figure: 1. a support rod; 2. a roller; 3. an electromagnetic device; 4. a first nut; 5. an insulating support rod; 6. a metal rod; 7. a steel brush; 8. a spring; 9. a baffle; 10. a first slide bar; 11. a sliding sleeve; 12. a thread; 13. a pipe; 14. a shaft-driven connecting member; 15. a detection device body; 16. a second slide bar; 17. a sliding sleeve; 18. a fixing plate; 19. a shaft-driven connecting rod; 20. a permanent magnet; 21. a yoke; 22. a servo motor; 23. a screw rod; 24. a second nut; 25. a driving motor; 26. a light supplementing lamp; 27. a camera is provided.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a pipeline detection device based on rotatory electromagnetic field, including detection device body 15, detection device body 15 internal fixation is equipped with servo motor 22, servo motor 22 drives lead screw 23 rotation, thereby drive lead screw 23 and remove, servo motor 22 both sides transmission is equipped with lead screw 23, lead screw 23 is through the fixed second sliding sleeve 17 of both ends surface sliding on second sliding rod 16 surface, thereby drive the bracing piece 1 shrink on fixed plate 18 surface, thereby drive gyro wheel 2 shrink, adjust length, lead screw 23 surface threaded connection is equipped with second nut 24, second nut 24 both sides surface axial connection is equipped with axial connecting rod 19, axial connecting rod 19 one end axial connecting is equipped with fixed plate 18, fixed plate 18 fixed surface is equipped with a plurality of bracing piece 1, bracing piece 1 one end fixed surface is equipped with driving motor 25, driving motor 25 one side transmission is equipped with gyro wheel 2, fixed plate 18 both sides surface is equipped with a plurality of second sliding sleeve 17, the second sliding sleeve 17 is internally provided with a second sliding rod 16 in a sliding way, two ends of the second sliding rod 16 are fixedly connected with the inner side surface of the detection device body 15, one end surface of the detection device body 15 is fixedly provided with a shaft-driven connecting piece 14, the surface of the shaft-driven connecting piece 14 is in shaft-driven connection with a pipeline 13, the surface of the pipeline 13 is fixedly provided with a yoke 21, steel wires of the steel brush 7 are fixed on the outer peripheral surface of the yoke 21 in a cluster, so that magnetic force lines conducted by the yoke 21 can be uniformly and smoothly led into the steel brush 7 and finally transferred to the wall of a detected pipeline to form a closed-loop magnetic field loop, leakage magnetic field signals at all damage defects of the wall of the detected pipeline can reach optimal magnetization intensity by adjusting the size of direct current so as to ensure the accuracy of detecting various damage defects of the detected pipeline by the pipeline leakage magnetic detection device, thereby improved detection efficiency, yoke 21 fixed surface is equipped with a plurality of permanent magnet 20, permanent magnet 20 fixed surface is equipped with electromagnetic means 3, electromagnetic means 3 surface axial connection is equipped with metal pole 6, metal pole 6 one end axial connection is equipped with steel brush 7, steel brush 7 laminating is at pipeline inboard surface, pack into the pipeline inside with detection device body 15, driving motor 25 drives gyro wheel 2 and rotates, thereby drive electromagnetic means 3 and remove, through the permanent magnet 20 circular telegram to yoke 21 surface, pipeline 13 one end is fixed and is equipped with first slide bar 10, first slide bar 10 fixed surface is equipped with baffle 9, baffle 9 one side surface laminating is equipped with spring 8, spring 8 one side surface laminating connection is equipped with first slide sleeve 11, first slide sleeve 11 surface axial connection is equipped with insulating bracing piece 5.
According to the invention, preferably, the surface of the first sliding rod 10 is provided with the thread 12, the surface of the thread 12 is in threaded connection with the first nut 4, and the first nut 4 is rotated to move on the surface of the thread 12, so that the first nut 4 extrudes the first sliding sleeve 11 to slide on the surface of the first sliding rod 10, the metal rod 6 is driven to rotate through the insulating supporting rod 5, the position of the steel brush 7 is adjusted, and the diameter of the adaptive pipeline is adjusted.
In the present invention, preferably, the insulating support rod 5 is made of plastic material, and one end of the insulating support rod 5 is axially connected to the middle section surface of the metal rod 6.
In the invention, preferably, a rubber anti-slip layer is arranged on the surface of the roller 2, and the driving motor 25 is connected with the roller 2 through a transmission rotating shaft.
In the present invention, preferably, the surface of the detecting device body 15 is fixedly provided with a plurality of light supplementing lamps 26, and the light supplementing lamps 26 are annularly arranged.
In the present invention, preferably, the surface of the detecting device body 15 is fixedly provided with the camera 27, and the camera 27 is wirelessly connected with the terminal through the wireless transmitter.
In the invention, preferably, the screw rods 23 are arranged on two sides of the servo motor 22 in a transmission way, and the screw threads on the surfaces of the screw rods 23 are opposite in direction.
In the present invention, it is preferable that the electromagnetic device 3 and the metal rod 6 are both made of conductive metal materials.
In the present invention, preferably, a battery is provided in the detection device body 15, and the electromagnetic device 3, the servo motor 22, the light supplement lamp 26, the camera 27, and the driving motor 25 are all powered by the battery.
The specific principle is as follows: when the magnetic field leakage detector is used, according to the diameter of a pipeline, the servo motor 22 drives the screw rod 23 to rotate, thereby driving the screw rod 23 to move, the screw rod 23 slides on the surface of the second sliding rod 16 through the second sliding sleeve 17 with the two fixed end surfaces, thereby driving the supporting rod 1 on the surface of the fixed plate 18 to shrink, thereby driving the roller 2 to shrink, adjusting the length, adapting to pipelines with different diameters, simultaneously rotating the first nut 4 to move on the surface of the thread 12, enabling the first nut 4 to squeeze the first sliding sleeve 11 to slide on the surface of the first sliding rod 10, thereby driving the metal rod 6 to rotate through the insulating supporting rod 5, adjusting the position of the steel brush 7, adjusting the diameter of the adapting pipeline, enabling the steel brush 7 to be attached on the inner side surface of the pipeline, plugging the detection device body 15 into the pipeline, driving the roller 2 to rotate, thereby driving the electromagnetic device 3 to move, and enabling the permanent magnet 20 on the surface of the yoke 21 to be electrified, so that steel wires of the steel brush 7 are a cluster of a circle of one circle, and are integrally and smoothly led into the steel brush 7 and finally transferred onto the pipeline wall of the pipeline to form a closed loop, thereby detecting magnetic field leakage defect of each pipeline accurately, and detecting magnetic field leakage defect can be detected by adjusting the magnetic field leakage defect of each pipeline accurately.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (8)
1. The utility model provides a pipeline detection device based on rotatory electromagnetic field, includes detection device body (15), a serial communication port, detection device body (15) internal fixation is equipped with servo motor (22), servo motor (22) both sides transmission is equipped with lead screw (23), lead screw (23) surface threaded connection is equipped with second nut (24), second nut (24) both sides surface shaft is connected and is equipped with shaft movable connecting rod (19), shaft movable connecting rod (19) one end shaft is connected and is equipped with fixed plate (18), fixed plate (18) surface fixation is equipped with a plurality of bracing piece (1), bracing piece (1) one end surface fixation is equipped with driving motor (25), driving motor (25) one side transmission is equipped with gyro wheel (2), fixed plate (18) both sides surface fixation is equipped with a plurality of second sliding sleeve (17), second sliding sleeve (17) inside slip is equipped with second sliding rod (16), and second sliding rod (16) both ends and detection device body (15) inboard surface fixation are connected, detection device body (15) one end surface fixation is equipped with shaft movable connecting piece (14), pipeline (14) one end surface fixation is equipped with yoke (13), the utility model discloses a pipeline detection device, including yoke (21) surface fixation is equipped with a plurality of permanent magnet (20), permanent magnet (20) surface fixation is equipped with electromagnetic means (3), electromagnetic means (3) surface shaft coupling is equipped with metal pole (6), metal pole (6) one end shaft coupling is equipped with steel brush (7), through the circular telegram to permanent magnet (20) on yoke (21) surface, steel wire of steel brush (7) is a cluster and is fixed in yoke (21) periphery one complete circle, so that the magnetic force line that yoke (21) conducted evenly and smoothly leads into steel brush (7) and finally transmits to the pipe wall of measured pipeline, form closed loop magnetic field circuit, pipeline (13) one end fixed be equipped with first slide bar (10), first slide bar (10) one end is equipped with another detection device body through shaft coupling piece (14) swivelling joint, first slide bar (10) surface fixation is equipped with baffle (9), baffle (9) one side surface laminating is equipped with spring (8), first slide bar (11) one side surface laminating connection is equipped with, first slide bar (11) is equipped with one side of pipeline detection device through the screw thread breakage detection device (12), the screw thread (12) surface threaded connection is equipped with first nut (4), rotates first nut (4) at screw thread (12) surface removal to make first nut (4) extrusion first slip sleeve (11) slide on first slide bar (10) surface, thereby drive metal pole (6) rotation through insulating bracing piece (5), adjust the position of steel brush (7), thereby adjust the diameter of adaptation pipeline.
2. The pipe inspection device based on the rotating electromagnetic field according to claim 1, wherein the insulating support rod (5) is made of plastic material, and one end of the insulating support rod (5) is axially connected to the middle section surface of the metal rod (6).
3. The pipeline detection device based on the rotating electromagnetic field according to claim 1, wherein a rubber anti-slip layer is arranged on the surface of the roller (2), and the driving motor (25) is connected with the roller (2) through a transmission rotating shaft.
4. The pipeline detection device based on the rotating electromagnetic field according to claim 1, wherein a plurality of light supplementing lamps (26) are fixedly arranged on the surface of the detection device body (15), and the light supplementing lamps (26) are annularly arranged.
5. The pipeline detection device based on the rotating electromagnetic field according to claim 1, wherein a camera (27) is fixedly arranged on the surface of the detection device body (15), and the camera (27) is in wireless connection with a terminal through a wireless transmitter.
6. A pipe inspection device based on a rotating electromagnetic field according to claim 1, characterized in that the screw threads on the surfaces of the screws (23) on both sides of the servo motor (22) are opposite in direction.
7. A pipe inspection device based on a rotating electromagnetic field according to claim 1, characterized in that the electromagnetic device (3) and the metal rod (6) are both made of conductive metal material.
8. A pipe inspection device based on a rotating electromagnetic field according to claim 1, characterized in that the inspection device body (15) is internally provided with a storage battery, and that the electromagnetic device (3), the servo motor (22), the light supplementing lamp (26), the camera (27) and the driving motor (25) are powered by the storage battery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010683010.5A CN111830123B (en) | 2020-07-15 | 2020-07-15 | Pipeline detection device based on rotating electromagnetic field |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010683010.5A CN111830123B (en) | 2020-07-15 | 2020-07-15 | Pipeline detection device based on rotating electromagnetic field |
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| CN111830123A CN111830123A (en) | 2020-10-27 |
| CN111830123B true CN111830123B (en) | 2023-07-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113049675B (en) * | 2021-04-09 | 2022-07-29 | 中国石油大学(华东) | Rotating electromagnetic field pipeline defect layered detection probe and method |
| CN114658958B (en) * | 2022-03-23 | 2023-07-18 | 安徽工业大学 | Metal pipeline detection device |
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| WO1997012237A1 (en) * | 1995-09-28 | 1997-04-03 | Wernicke Timothy K | Spiral tractor apparatus and method |
| CN1232821C (en) * | 2003-09-18 | 2005-12-21 | 上海交通大学 | Detection system for wall thickness and defect of oil gas pipeline |
| GB0414672D0 (en) * | 2004-06-03 | 2004-08-04 | Pii Ltd | In-line pipe inspection tool |
| CN101819181B (en) * | 2010-04-09 | 2012-07-04 | 新疆三叶管道技术有限责任公司 | Pipeline defect and magnetic leakage detection device |
| CN107234480A (en) * | 2017-08-01 | 2017-10-10 | 杭州广旭数控设备有限公司 | A kind of numerically controlled lathe with lead screw guide rails cleaning brush |
| CN109813599B (en) * | 2019-01-14 | 2021-08-24 | 上海潜业市政工程有限公司 | CIPP pipeline restoration compressive strength detection device and detection method thereof |
| CN210566978U (en) * | 2019-04-16 | 2020-05-19 | 南京派普莱恩管道检测技术服务有限公司 | 360 degree magnetic leakage check out test set based on pipeline |
| CN209803055U (en) * | 2019-04-16 | 2019-12-17 | 中国特种设备检测研究院 | Direct-current axial magnetization device for pipeline magnetic flux leakage internal detection and internal detection device |
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- 2020-07-15 CN CN202010683010.5A patent/CN111830123B/en active Active
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