CN109521088B - Multichannel pulse vortex detection device and method for detecting pipeline defects - Google Patents
Multichannel pulse vortex detection device and method for detecting pipeline defects Download PDFInfo
- Publication number
- CN109521088B CN109521088B CN201811622092.1A CN201811622092A CN109521088B CN 109521088 B CN109521088 B CN 109521088B CN 201811622092 A CN201811622092 A CN 201811622092A CN 109521088 B CN109521088 B CN 109521088B
- Authority
- CN
- China
- Prior art keywords
- pipeline
- detection
- buckle
- sensor
- eddy current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9013—Arrangements for scanning
- G01N27/902—Arrangements for scanning by moving the sensors
Abstract
The invention relates to a multichannel pulse eddy current detection device and a multichannel pulse eddy current detection method for detecting pipeline defects, and the technical scheme is as follows: the high-speed change-over switch with fixed number is connected with the sensor with corresponding number through a wire, the detection pipeline internal device comprises an infrared imager arranged at the front end, a detection sensor, a buckle and a wire, wherein the detection sensor, the buckle and the wire are arranged on the cylinder in a two-ring cross arrangement mode, the detection pipeline external device comprises a ring buckle and a special bolt, the ring buckle is provided with two connecting ends which are matched with each other in a concave-convex mode, a smooth round hole at the convex end of the ring buckle is in butt joint with a threaded hole at the concave end of another ring buckle, and annular chain connection of a plurality of ring buckles is achieved through the special bolt. The invention has simple operation, can determine the position, the size and the shape of 360-degree omnibearing defect on the inner and outer sides of the pipeline by one-time measurement, improves the detection accuracy and the detection efficiency, and simultaneously can independently close and select the detection sensor by setting the high-speed change-over switch, thereby further accurately positioning the defect position, the size and the shape of the defect.
Description
Technical Field
The invention relates to a device and a method for detecting internal and external defects of a pipeline, in particular to a multichannel pulse eddy current detection device and a multichannel pulse eddy current detection method for detecting the defects of the pipeline.
Background
With the rapid development of the world industry, pipelines have wide application in various fields of petrochemical industry, ocean engineering and the like, and have become an indispensable part in the modern industry. However, the service environment of the pipeline is often influenced by corrosive media, and with the extension of the service time, corrosion and abrasion inevitably occur, if not found in time, sudden damage accidents are easily caused. Therefore, the detection of corrosion and abrasion of the pipeline and the evaluation of the service life of the pipeline are necessary means for avoiding the occurrence of the accidents. The eddy current inspection technology is widely used in the field of pipeline defects as a novel inspection technology. However, the current pulse eddy current detection system and method for detecting the pipeline mainly aims at the small-caliber pipeline, only detects the outside of the pipeline, cannot detect the inside of the pipeline, cannot detect the pipeline defect at 360 degrees in an all-around way, and reduces the accuracy and detection efficiency of the pipeline defect detection to a certain extent.
Disclosure of Invention
The invention aims at solving the defects existing in the prior art, and provides a multichannel pulse vortex detection device and a multichannel pulse vortex detection method, wherein the multichannel pulse vortex detection device is convenient to operate, and can directly determine the position, the size and the shape of 360-degree omnibearing defects on the inner part and the outer part of a pipeline through one-time measurement.
The invention relates to a multichannel pulse eddy current testing device for testing pipeline defects, which adopts the technical proposal that: the device comprises a computer control analysis module, a pulse signal generation module, a signal processing module, a high-speed change-over switch and a detection device, wherein the detection device comprises a detection pipeline internal device or a detection pipeline external device, the high-speed change-over switch with a fixed number is connected with a sensor with the fixed number through a wire, a signal generated by the pulse signal generation module is received and input into the sensor, a feedback signal of the sensor is received and transmitted to the signal processing module, the detection pipeline internal device comprises an infrared imager arranged at the front end of the device, detection sensors which are arranged on a device cylinder and are arranged in a two-circle cross manner, a buckle and a wire, the detection sensors are isolated by adopting anti-interference materials and are connected with a display with a corresponding number, so that 360-degree all-around one-time detection in the detection pipeline is realized, the buckle is used for fixing a telescopic device, and the telescopic device is pushed to enable the detection pipeline internal device to move from outside to inside along the axis of the pipeline in an orientation manner; the detection pipeline external device comprises a ring buckle and a special bolt, wherein the ring buckle is provided with two connecting ends which are matched in a concave-convex mode, a smooth round hole at the convex end of the ring buckle is in butt joint with 2 threaded holes at the concave end of the other ring buckle, annular chain connection of the ring buckles is achieved through the special bolt, the ring buckle is provided with a detection sensor fixing part, the ring buckle is provided with a rope buckle, and the ring buckle is provided with a pulley.
The high-speed change-over switch can be independently closed to perform key detection on suspected defect positions, so that the defect positions and the sizes and the forms of the defects can be accurately positioned.
The outer sides of the buckles are coated with rubber materials, and the size of the buckles can be adjusted so as to adapt to the internal detection of pipelines with different sizes; the infrared imager can observe the condition inside the pipeline at least at one of the foremost ends of the probes; each detection sensor leakage part of the detection pipeline internal device is made of rubber materials.
The middle of the special bolt is a smooth cylinder matched with the smooth round hole, and the two ends of the special bolt are threads matched with the threaded holes.
The annular chain-shaped connection of the plurality of buckles enables the adjacent buckles to axially and freely rotate by taking the middle smooth part of the special bolt as the shaft.
The pulley is arranged at the convex end of the ring buckle, the size of the pulley can be adjusted, and the pulley can move on a pipeline.
The above-mentioned detection sensor fixing portion can fix a single sensor.
The invention relates to a detection method of a multichannel pulse eddy current detection device for detecting pipeline defects, which comprises the following steps:
1) Selecting an inner device of the detection pipeline and an outer device of the detection pipeline with corresponding sizes according to the inner and outer pipe diameters of the detected pipeline, and selecting a proper telescopic device or rope according to the detected pipeline;
2) Surrounding the external device of the detection pipeline on the outer wall of the pipeline, enabling the device to move in parallel along the axial direction of the pipeline, and pushing the internal device of the detection pipeline along the axis of the pipeline to realize directional movement;
3) The signals generated by the pulse signal generating module sequentially act on the detected pipeline through the high-speed change-over switch and the sensor;
4) The sensor sequentially displays and stores the fed-back signals on the computer control analysis module through the high-speed change-over switch and the signal processing module;
5) According to the feedback information, the high-speed change-over switch can be independently closed, and the position, the shape and the size of the defect part of the pipeline are selectively and mainly observed.
The detection pipeline internal device and the detection pipeline external device in the step 1) can respectively detect the interior and the exterior of the pipeline at one time by 360 degrees.
The computer control analysis module in the step 4) is provided with a plurality of sensors with split screen displays corresponding to corresponding numbers respectively.
The beneficial effects of the invention are as follows: the invention has the advantages of convenient operation, high visual degree, accurate detection, no dependence on the experience of detection personnel, 360-degree all-around one-time detection on the inside and the outside of the pipeline, improvement of detection accuracy and detection efficiency, and independent closing and selection of the detection sensor due to the arrangement of the high-speed change-over switch, thereby further accurately positioning the defect part, the size and the shape of the defect.
Drawings
FIG. 1 is a block diagram of a multi-channel pulsed eddy current inspection apparatus for inspecting a pipe defect in accordance with the present invention;
FIG. 2 is a schematic diagram of the internal device structure of the detection pipeline;
FIG. 3 is a schematic view of the structure of a clasp for detecting a device outside a pipe;
FIG. 4 is a schematic illustration of a snap-on assembly connection for detecting a device external to a pipeline;
FIG. 5 is a graph of pulsed eddy current defect scanning voltage;
in the upper graph: the device comprises a computer control analysis module 1, a pulse signal generation module 2, a signal processing module 3, a high-speed change-over switch 4, a detection pipeline internal device 5, a detection pipeline external device 6, a detection device 7, a detection sensor 8, a buckle 9, a wire 10, a special bolt 11, a threaded hole 12, a rope buckle 13, a detection sensor fixing part 15, a pulley 16 and a smooth round hole 17.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Referring to fig. 1-4, the multi-channel pulse eddy current detection device for detecting pipeline defects in the invention comprises a computer control analysis module 1, a pulse signal generation module 2, a signal processing module 3, a high-speed change-over switch 4 and a detection device, wherein the detection device comprises a detection pipeline internal device 5 or a detection pipeline external device 6, the high-speed change-over switch 4 with a fixed number is connected with the sensor with the fixed number through a wire, a signal generated by the pulse signal generation module 2 is received and is input into the sensor, a feedback signal of the sensor is received and is transmitted to the signal processing module 3, the detection pipeline internal device 5 comprises an infrared imager 7 arranged at the front end of the device, detection sensors 8 arranged on a device cylinder in a two-circle crossed arrangement, buckles 9 and wires 10, each sensor is isolated by adopting anti-interference materials and is connected with a display with the corresponding number, so that 360-degree all-round disposable detection in the detection pipeline is realized, and the buckles 9 are used for fixing the telescopic device, and pushing the telescopic device 5 to move the detection pipeline internal device from outside to inside along the axis of the pipeline in an orientation; the detection pipeline external device comprises a ring buckle 14 and a special bolt 11, wherein the ring buckle 14 is provided with two connecting ends which are matched in a concave-convex mode, a smooth round hole 17 at the convex end of the ring buckle is in butt joint with 2 threaded holes 12 at the concave end of the other ring buckle, annular chain connection of a plurality of ring buckles is achieved through the special bolt 11, a detection sensor fixing part 15 is arranged on the ring buckle 14, a rope buckle 13 is arranged on the ring buckle, and a pulley 16 is arranged on the ring buckle 14.
When detecting the inside and outside of a pipeline, firstly, measuring the inside and outside diameter of the pipeline, selecting a detection device 5 and a detection device 6 with proper types, fixing a telescopic device on a buckle 9, fixing a rope or the telescopic device on a rope buckle 13, enabling the detection device 5 to move along the pipeline in an axial direction, enabling the detection device 6 to move along the pipeline in an axial direction from one end of the pipeline to the other end of the pipeline, and enabling an infrared imager 7 to observe the internal environment of the pipeline. The signals generated by the pulse signal generating module 2 sequentially pass through the high-speed change-over switch 4 and the sensor to act on the detected pipeline, the sensor sequentially passes through the high-speed change-over switch 4 and the signal processing module 3 to display and store the fed-back signals on the computer control analysis module 1, each independently operated sensor displays the detected signals on a corresponding imaging display screen, the high-speed change-over switch 4 can be independently closed according to the fed-back information, the position, the shape and the size of the defect part of the pipeline can be selectively and mainly observed, and the pulse eddy current defect scanning voltage diagram can be referred to in the figure 5.
Referring to fig. 1-2, the multi-channel pulse eddy current detection device for detecting pipeline defects in the invention comprises a computer control analysis module 1, a pulse signal generation module 2, a signal processing module 3, a high-speed change-over switch 4 and a detection pipeline internal device 5, wherein the high-speed change-over switch 4 with a fixed number is connected with the sensor with the fixed number through a wire, a signal generated by the pulse signal generation module 2 is received and input to the sensor, and a feedback signal of the sensor is received and transmitted to the signal processing module 3, the detection pipeline internal device 5 comprises an infrared imager 7 arranged at the front end of the device, detection sensors 8 which are arranged on a device cylinder and are arranged in a two-circle cross manner, a buckle 9 and a wire 10, each sensor is isolated by adopting an anti-interference material and is connected with a display with the corresponding number, so that 360-degree all-around disposable detection in the detection pipeline is realized, and the buckle 9 is used for fixing the telescopic device, and pushing the telescopic device to enable the detection pipeline internal device 5 to move from outside to inside along the axis of the pipeline.
When detecting the inside pipeline, at first measure the pipeline internal diameter, select the detection device who is fit for the model, fix telescoping device on buckle 9, advance inside pipeline with detection device 5 along pipeline axial, infrared imager 7 can observe the inside condition of pipeline, every independently operated sensor shows the signal that detects on corresponding imaging display screen, realize 360 omnidirectional detection to pipeline inside, according to the information of feedback, can close high-speed change over switch 4 alone, the position, the form and the size of selectively focus observation pipeline defect position. The rubber material leaked from the sensor can reduce friction between the detection sensor and the pipeline.
When detecting inside pipeline, at first measure the pipeline internal diameter, select buckle 9 fixed of suitable size, fix telescoping device on buckle 3, promote detection device along pipeline axial to pipeline inside removal, infrared imager can observe pipeline inside condition, every independently operated sensor shows the signal that detects on corresponding imaging display screen, realize 360 omnidirectional detection to pipeline inside, according to the information of feedback, can close high-speed change over switch 4 alone, the position, the form and the size of selectively focus observation pipeline defect position. The rubber material wrapped by the buckle can reduce friction between the buckle and the pipeline.
The embodiment 3, refer to fig. 1, 3 and 4, the multichannel pulse eddy current detection device for detecting pipeline defects provided by the invention comprises a computer control analysis module 1, a pulse signal generation module 2, a signal processing module 3, a high-speed change-over switch 4 and a detection pipeline external device 6, wherein the high-speed change-over switch 4 with a fixed number is connected with a sensor with the fixed number through a wire, a signal generated by the pulse signal generation module 2 is received and input into the sensor, a feedback signal of the sensor is received and transmitted to the signal processing module 3, the detection pipeline external device comprises a ring 14 and a special bolt 11, the ring 14 is provided with two connecting ends which are matched in a concave-convex mode, a smooth round hole 17 at the convex end of the ring is butted with 2 threaded holes 12 at the concave end of the other ring, annular chain connection of a plurality of rings is realized through the special bolt 11, a detection sensor fixing position 15 is arranged on the ring 14, a rope buckle 13 is arranged on the ring 14, and a pulley 16 is arranged on the ring 14.
When detecting a pipeline, firstly, measuring the size of Zhou Guanjing outside the pipeline, selecting a proper number of buckles 14 according to the size, relatively connecting concave-convex ends of the plurality of buckles 14 in a chain manner through special bolts 11, encircling the annular buckles outside the pipeline, attaching a probe to the pipeline, and fixing a rope or a telescopic rod on the rope buckle 13. The telescopic rod is pushed or pulled, the retaining ring buckle and the pipeline axially and horizontally move, and detection of the vertical pipeline from bottom to top or the horizontal pipeline from one end to the other end is realized. According to the feedback information, the high-speed change-over switch 4 can be independently closed, and the position, the shape and the size of the defect part of the pipeline are selectively and mainly observed. Each ring buckle is provided with a pulley, the pulley can slide on the surface of the pipeline after being formed into a ring shape, the size of the pulley can be adjusted to adjust the fitting degree of the probe and the pipeline, and the pulley can slide on the outer wall of the pipeline.
In addition, the detection method of the multi-channel pulse eddy current detection device for detecting the pipeline defects comprises the following steps of:
1) Selecting an inner device of the detection pipeline and an outer device of the detection pipeline with corresponding sizes according to the inner and outer pipe diameters of the detected pipeline, and selecting a proper telescopic device or rope according to the detected pipeline;
2) Surrounding the external device of the detection pipeline on the outer wall of the pipeline, enabling the device to move in parallel along the axial direction of the pipeline, and pushing the internal device of the detection pipeline along the axis of the pipeline to realize directional movement;
3) The signals generated by the pulse signal generating module sequentially act on the detected pipeline through the high-speed change-over switch and the sensor;
4) The sensor sequentially displays and stores the fed-back signals on the computer control analysis module through the high-speed change-over switch and the signal processing module;
5) According to the feedback information, the high-speed change-over switch can be independently closed, and the position, the shape and the size of the defect part of the pipeline are selectively and mainly observed.
The detection pipeline internal device and the detection pipeline external device in the step 1) can respectively detect the interior and the exterior of the pipeline at one time by 360 degrees.
The computer control analysis module in the step 4) is provided with a plurality of sensors with split screen displays corresponding to corresponding numbers respectively.
The above description is only a few preferred embodiments of the present invention, and any person skilled in the art may make modifications to the above described embodiments or make modifications to the same. Therefore, any simple modification or equivalent made according to the technical solution of the present invention falls within the scope of the protection claimed by the present invention.
Claims (8)
1. A detection method of a multichannel pulse eddy current detection device for detecting pipeline defects is characterized by comprising the following steps of: the multichannel pulse eddy current detection device for detecting the pipeline defects comprises a computer control analysis module (1), a pulse signal generation module (2), a signal processing module (3), a high-speed change-over switch (4) and a detection device, wherein the detection device comprises a detection pipeline internal device (5) or a detection pipeline external device (6), the high-speed change-over switch (4) with a fixed number is connected with the sensor with the fixed number through a wire, a signal generated by the pulse signal generation module (2) is received and is input into the sensor, a feedback signal of the sensor is received and is transmitted to the signal processing module (3), the detection pipeline internal device (5) comprises an infrared imager (7) arranged at the front end of the device, detection sensors (8), buckles (9) and wires (10) which are arranged on a device cylinder in a two-turn cross arrangement, each sensor is isolated by adopting anti-interference materials and is connected with a display with the corresponding number, so that the detection pipeline internal device (5) is pushed by the buckle (9) to realize directional movement of the detection pipeline internal device from outside to inside 360 degrees to inside along the axis of the pipeline; the detection pipeline external device (6) comprises a ring buckle (14) and a special bolt (11), wherein the ring buckle (14) is provided with two connecting ends which are matched in a concave-convex mode, a convex end smooth round hole (17) of the ring buckle (14) is in butt joint with 2 threaded holes (12) at a concave end of the other ring buckle (14), annular chain connection of the ring buckles (14) is achieved through the special bolt (11), a detection sensor fixing part (15) is arranged on the ring buckle (14), a rope buckle (13) is arranged on the ring buckle (14), and a pulley (16) is arranged on the ring buckle (14);
the outer side of the buckle (9) is coated with rubber materials, and the size of the buckle can be adjusted so as to adapt to the internal detection of pipelines with different sizes; the infrared imager (7) is arranged at least one of the foremost ends of the probes to observe the internal condition of the pipeline; the leakage part of each detection sensor (8) is made of rubber material;
the detection method comprises the following steps:
1) Selecting a detection pipeline inner device (5) and a detection pipeline outer device (6) with corresponding sizes according to the inner and outer pipe diameters of the detected pipeline, and selecting a proper telescopic device or rope according to the detected pipeline;
2) Surrounding an external device (6) of the detection pipeline on the outer wall of the pipeline, enabling the device to move in parallel along the axial direction of the pipeline, and pushing the internal device of the detection pipeline along the axis of the pipeline to realize directional movement;
3) The signals generated by the pulse signal generating module (2) sequentially act on the detected pipeline through the high-speed change-over switch (4) and the sensor;
4) The sensor sequentially displays and stores the fed-back signals on the computer control analysis module (1) through the high-speed change-over switch (4) and the signal processing module (3);
5) According to the feedback information, the high-speed change-over switch (4) can be independently closed, and the position, the shape and the size of the defect part of the pipeline are selectively and mainly observed.
2. The method for detecting a pipe defect by using the multi-channel pulse eddy current testing apparatus according to claim 1, wherein: the detection pipeline inner device (5) and the detection pipeline outer device (6) in the step 1) respectively detect the interior and the exterior of the pipeline at 360 degrees in one time.
3. The method for detecting a pipe defect by using the multi-channel pulse eddy current testing apparatus according to claim 1, wherein: the computer control analysis module (1) is provided with a plurality of sensors with split screen displays corresponding to corresponding numbers respectively.
4. The method for detecting a pipe defect by using the multi-channel pulse eddy current testing apparatus according to claim 1, wherein: the high-speed change-over switch (4) can be independently closed to perform key detection on suspected defect positions.
5. The method for detecting a pipe defect by using the multi-channel pulse eddy current testing apparatus according to claim 1, wherein: the middle of the special bolt (11) is a smooth cylinder matched with the smooth round hole (17), and the two ends of the special bolt are threads matched with the threaded hole (12).
6. The method for detecting a pipe defect by using the multi-channel pulse eddy current testing apparatus according to claim 1, wherein: the annular chain-shaped connection of the plurality of ring buckles (14) enables the adjacent ring buckles (14) to axially rotate freely by taking the middle smooth part of the special bolt (11) as the shaft.
7. The method for detecting a pipe defect by using the multi-channel pulse eddy current testing apparatus according to claim 1, wherein: the pulley (16) is arranged at the convex end of the ring buckle (14) and can move on the pipeline.
8. The method for detecting a pipe defect by using the multi-channel pulse eddy current testing apparatus according to claim 1, wherein: the detection sensor fixing part (15) is used for fixing a single sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811622092.1A CN109521088B (en) | 2018-12-28 | 2018-12-28 | Multichannel pulse vortex detection device and method for detecting pipeline defects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811622092.1A CN109521088B (en) | 2018-12-28 | 2018-12-28 | Multichannel pulse vortex detection device and method for detecting pipeline defects |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109521088A CN109521088A (en) | 2019-03-26 |
| CN109521088B true CN109521088B (en) | 2023-09-29 |
Family
ID=65798239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811622092.1A Active CN109521088B (en) | 2018-12-28 | 2018-12-28 | Multichannel pulse vortex detection device and method for detecting pipeline defects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109521088B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231397A (en) * | 2019-06-18 | 2019-09-13 | 中国石油大学(华东) | A kind of multichannel impulse eddy current on-line monitoring system and monitoring method |
| CN110579228B (en) * | 2019-07-26 | 2021-06-25 | 中国石油天然气集团公司管材研究所 | Sensor mounting and protecting method for monitoring surfaces of pipelines with different specifications |
| CN110469780A (en) * | 2019-07-26 | 2019-11-19 | 中国石油天然气集团公司管材研究所 | The installation of reducing sensor and protection location and device for the monitoring of more specification pipelines |
| CN112461298B (en) * | 2020-12-01 | 2022-07-22 | 辽宁科技大学 | Multi-parameter online comprehensive detection device for variable-diameter aviation hydraulic pipeline |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH063331A (en) * | 1992-06-22 | 1994-01-11 | Hitachi Ltd | Eddy-current flaw detector |
| US6344739B1 (en) * | 1999-02-12 | 2002-02-05 | R/D Tech Inc. | Eddy current probe with multi-use coils and compact configuration |
| CN101802603A (en) * | 2007-09-20 | 2010-08-11 | 原子力工程股份有限公司 | Eddy-current flaw detecting method, eddy-current flaw detecting device, and eddy-current flaw detecting probe |
| CN104532264A (en) * | 2014-12-24 | 2015-04-22 | 中国石油天然气股份有限公司 | Method and device for evaluating pipeline exterior damage and cathode protection effects |
| CN105353027A (en) * | 2015-11-26 | 2016-02-24 | 中国海洋石油总公司 | ACFM-based chained rapid detection probe for surface defects |
| CN105891323A (en) * | 2014-11-21 | 2016-08-24 | 中机生产力促进中心 | Eddy probe array for detecting pipeline deformation |
| CN106290560A (en) * | 2016-08-18 | 2017-01-04 | 广西电网有限责任公司电力科学研究院 | A kind of electromagnetic detection coupling probe |
| CN106568836A (en) * | 2016-11-08 | 2017-04-19 | 上海航天精密机械研究所 | Flexible eddy-current array probe used for rapid and accurate detection of conductive material |
-
2018
- 2018-12-28 CN CN201811622092.1A patent/CN109521088B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH063331A (en) * | 1992-06-22 | 1994-01-11 | Hitachi Ltd | Eddy-current flaw detector |
| US6344739B1 (en) * | 1999-02-12 | 2002-02-05 | R/D Tech Inc. | Eddy current probe with multi-use coils and compact configuration |
| CN101802603A (en) * | 2007-09-20 | 2010-08-11 | 原子力工程股份有限公司 | Eddy-current flaw detecting method, eddy-current flaw detecting device, and eddy-current flaw detecting probe |
| CN105891323A (en) * | 2014-11-21 | 2016-08-24 | 中机生产力促进中心 | Eddy probe array for detecting pipeline deformation |
| CN104532264A (en) * | 2014-12-24 | 2015-04-22 | 中国石油天然气股份有限公司 | Method and device for evaluating pipeline exterior damage and cathode protection effects |
| CN105353027A (en) * | 2015-11-26 | 2016-02-24 | 中国海洋石油总公司 | ACFM-based chained rapid detection probe for surface defects |
| CN106290560A (en) * | 2016-08-18 | 2017-01-04 | 广西电网有限责任公司电力科学研究院 | A kind of electromagnetic detection coupling probe |
| CN106568836A (en) * | 2016-11-08 | 2017-04-19 | 上海航天精密机械研究所 | Flexible eddy-current array probe used for rapid and accurate detection of conductive material |
Non-Patent Citations (1)
| Title |
|---|
| 小径管周向裂纹脉冲涡流检测仿真和试验研究;曹爱松 等;《失效分析与预防》;第12卷(第2期);第71-77页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109521088A (en) | 2019-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109521088B (en) | Multichannel pulse vortex detection device and method for detecting pipeline defects | |
| CA2747053C (en) | Magnetic inspection device | |
| US5963030A (en) | Pipe inspection apparatus and process | |
| US7038445B2 (en) | Method, system and apparatus for ferromagnetic wall monitoring | |
| KR101986428B1 (en) | Pipe inspection robot | |
| CN108254434B (en) | Buried pipeline excavation-free magnetic induction detection probe array device and detection method | |
| CN105806935B (en) | Quick detection device for weld defects of large-scale metal round pipe | |
| US11307173B1 (en) | Apparatus, systems, and methods for inspection of tubular goods | |
| US20190178844A1 (en) | Differential magnetic evaluation for pipeline inspection | |
| US20220228849A1 (en) | Rotatable inspection device for defect detection | |
| CN103868984A (en) | Device for detecting damage to inner surface of overground high-pressure manifold | |
| US20150247823A1 (en) | Pipeline inspection device and pipeline inspection system | |
| WO2012124731A1 (en) | Pipe ultrasonic wave inspection device and pipe ultrasonic wave inspection method | |
| CN108318575B (en) | Tubular column detection probe and detection system of alternating current electromagnetic field | |
| CN103033561A (en) | Apparatus and method for inspection of tubes in a boiler | |
| KR102077658B1 (en) | Method for diagnosing underground facilities using TDR and system for diagnosing underground facilities using it | |
| CN112153333A (en) | Novel electric spark detection device | |
| CN203758959U (en) | Inner surface flaw detecting device of ground high pressure manifold | |
| CN204613151U (en) | A kind of compressed natural gas storage well the cannot-harm-detection device | |
| CN213990847U (en) | Novel electric spark detection device | |
| JPS60249049A (en) | Defect detecting device | |
| CN210221902U (en) | Magnetic field focusing transient electromagnetic pipeline defect scanning device | |
| CA3119266A1 (en) | System and method to detect an inline tool in a pipe | |
| CN209460201U (en) | A kind of Pulsed eddy current testing device of comprehensive detection pipeline internal flaw | |
| KR102515010B1 (en) | Eddy current testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |