CN112730604A - Pulse eddy current sensor device for monitoring corrosion of metal pipeline - Google Patents
Pulse eddy current sensor device for monitoring corrosion of metal pipeline Download PDFInfo
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- CN112730604A CN112730604A CN202011411423.4A CN202011411423A CN112730604A CN 112730604 A CN112730604 A CN 112730604A CN 202011411423 A CN202011411423 A CN 202011411423A CN 112730604 A CN112730604 A CN 112730604A
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- 239000002184 metal Substances 0.000 title claims abstract description 58
- 238000012544 monitoring process Methods 0.000 title claims abstract description 28
- 230000007797 corrosion Effects 0.000 title claims abstract description 25
- 238000005260 corrosion Methods 0.000 title claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 230000005284 excitation Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 5
- 230000000737 periodic effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009683 ultrasonic thickness measurement Methods 0.000 description 1
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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
- G01N27/90—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
- G01N27/9093—Arrangements for supporting the sensor; Combinations of eddy-current sensors and auxiliary arrangements for marking or for rejecting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
- G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance
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Abstract
The invention belongs to the technical field of pipeline monitoring, and relates to a pulse eddy current sensor device for monitoring corrosion of a metal pipeline. The pulse eddy current sensor device comprises a pulse eddy current sensor and a fixing device, the fixing device comprises a flexible connecting piece and a fixed mounting seat, the fixed mounting seat is installed on the outer side wall of the metal pipeline or the outer side of the metal pipeline heat insulation layer through the flexible connecting piece, and the fixed mounting seat comprises an elastic clamping piece, a limiting piece and a base. The elastic clamping pieces are symmetrically arranged on the inner side of the base so as to form a clamping space for the pulse eddy current sensor in the base, the limiting piece corresponds to the elastic clamping pieces and is arranged on the outer side of the base, and one end of the flexible connecting piece is connected with the base. Therefore, the fixing device is convenient to install and disassemble, and the wall thickness reduction data caused by the corrosion of the metal pipeline can be conveniently monitored by the pulse eddy current sensor in real time, so that the defects of missing detection and high labor cost caused by periodic detection are overcome.
Description
Technical Field
The invention belongs to the technical field of pipeline monitoring, and relates to a pulse eddy current sensor device for monitoring corrosion of a metal pipeline.
Background
The metal pipeline with the heat preservation layer can generate the condition of wall thickness reduction due to corrosion in the long-term use process, and when the wall thickness reduction reaches a certain degree, the metal pipeline is easy to fail and explode, so that huge economic loss and casualty accidents are caused. The conventional ultrasonic thickness measurement method needs a coupling agent and needs to be tightly attached to the surface of a pipeline, so that the method has limitation on the wall thickness monitoring of the metal pipeline with the heat insulation layer. The pulse eddy current technology uses square waves with a certain duty ratio as an excitation source, the pulse current peak value is large, the duration is short, the heating problem of a coil is weakened, eddy currents can enter deeper areas of conductors to obtain deeper defect information, and the pulse eddy current technology has unique application advantages in the aspect of monitoring the wall thickness of a metal pipeline with a heat insulation layer.
However, the existing pulse eddy current technology is mostly used for monitoring the wall thickness of a metal pipeline without dismantling a heat insulation layer, and testers need to regularly bring instruments and equipment to the metal pipeline with the heat insulation layer for monitoring, so that the operation is dangerous and tedious, and the obtained data is only the data of the selected time point, and the workers cannot be reminded to maintain the metal pipeline at the first time when the metal pipeline is possibly in a dangerous working state.
Disclosure of Invention
Technical problem to be solved
In order to solve the problems in the prior art, the pulse eddy current sensor device for monitoring the corrosion of the metal pipeline, provided by the invention, is convenient to install and disassemble, and can be used for conveniently monitoring wall thickness reduction data caused by the corrosion of the metal pipeline in real time by the pulse eddy current sensor, so that the defects of missing detection and high labor cost caused by regular detection are avoided.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
the invention provides a pulse eddy current sensor device for monitoring metal pipeline corrosion, which comprises a pulse eddy current sensor and a fixing device, wherein the fixing device comprises a flexible connecting piece and a fixed mounting seat, and the fixed mounting seat is arranged on the outer side wall of a metal pipeline or the outer side wall of a metal pipeline heat-insulating layer through the flexible connecting piece; the fixed mounting seat comprises an elastic clamping piece, a limiting piece and a base; the section of the base is square, the elastic clamping pieces are symmetrically arranged on the inner side of the base by taking the central axis of the base as a symmetry axis so as to form a clamping space for the pulse eddy current sensor in the base, and the pulse eddy current sensor is clamped in the clamping space; the limiting piece is arranged on the outer side of the base corresponding to the elastic clamping piece so that the elastic clamping piece slides along the direction towards/away from the pulse eddy current sensor; one end of the flexible connecting piece is connected with the base.
Preferably, the elastic clamping piece is an elastic piece, and the limiting piece is a screw fixedly connected with one side of the elastic piece;
the other side of the elastic part is abutted against the pulse eddy current sensor, and the pulse eddy current sensor is clamped inside the base by the symmetrically arranged elastic parts;
the base is equipped with screw rod complex screw hole, and the screw rod passes the screw hole and sets up the elastic component in the inside of base, and just through rotatory screw rod in order to adjust the distance between the elastic component of relative setting.
Preferably, the elastic clamping piece is an elastic piece, the limiting piece is a supporting rod fixedly connected with one side of the elastic piece, and the fixed mounting seat further comprises a limiting plate;
the other side of the elastic part is abutted against the pulse eddy current sensor, and the pulse eddy current sensor is clamped inside the base by the symmetrically arranged elastic parts;
the base is provided with a through hole matched with the supporting rod, and the supporting rod penetrates through the through hole to arrange the elastic piece inside the base;
the support rod is provided with a threaded section, the limiting plate is sleeved on the threaded section of the support rod and is screwed with the threaded section, and the limiting plate is fixedly connected with the base through the locking piece.
Preferably, the fixed mounting seat further comprises a sliding rod and a sliding groove;
the slide bar is connected with the support rod, the slide bar and the support rod are arranged vertically, and two ends of the slide bar respectively extend into the sliding grooves to slide in the sliding grooves.
Preferably, the base is the cuboid that is equipped with the chamber that holds, and the one end opening of base.
Preferably, the pulsed eddy current sensor device for metal pipe corrosion monitoring further comprises a top cover matched with the opening of the base.
Preferably, elastic clamping pieces are arranged on the peripheral side walls of the base correspondingly.
Preferably, the pulsed eddy current sensor comprises a framework, an exciting coil, a detecting coil and a shell, wherein the exciting coil and the detecting coil are wound on the framework;
a wiring port is arranged above the shell, and the output end of the exciting coil and the output end of the detecting coil are connected with the wiring port;
the shell is clamped in the clamping space.
Preferably, the flexible connecting part comprises a first flexible part and a second flexible part, one end of the first flexible part and one end of the second flexible part are respectively connected with two sides of the fixed mounting seat, and the other end of the first flexible part and the other end of the second flexible part are connected to fix the fixed mounting seat on the outer side wall of the metal pipeline.
(III) advantageous effects
The invention has the beneficial effects that:
according to the pulse eddy current sensor device for monitoring the corrosion of the metal pipeline, the installation and the disassembly of the pulse eddy current sensor on the outer side wall of the metal pipeline are facilitated by arranging the fixed installation seat and the flexible connecting piece, the pulse eddy current sensor is installed on the outer side wall of the metal pipeline through the fixing device, the wall thickness reduction data caused by the corrosion of the metal pipeline can be monitored in real time, the defects of detection omission and high labor cost caused by periodic detection are overcome, and the use safety of the metal pipeline is improved.
Drawings
FIG. 1 is a schematic view of a fixed mount and a flexible connection member according to an embodiment;
FIG. 2 is a schematic view of another embodiment of a fixed mount and a flexible connector;
fig. 3 is a schematic structural diagram of a pulsed eddy current sensor.
[ description of reference ]
11: a base; 121: an elastic member; 122: a screw; 131: a support bar; 1311: a threaded segment; 132: a limiting plate; 133: a locking member; 134: a slide bar; 135: a chute; 21: a first flexible member; 22: a second flexible member; 31: a detection coil; 32: an excitation coil; 33: a framework; 34: a housing; 341: and a wiring port.
Detailed Description
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 1-2, the present embodiment provides a pulsed eddy current sensor device for monitoring corrosion of a metal pipeline, the pulsed eddy current sensor device includes a pulsed eddy current sensor and a fixing device that includes a flexible connector and a fixed mounting seat, and the fixed mounting seat is mounted on an outer sidewall of the metal pipeline or an outer sidewall of an insulating layer of the metal pipeline through the flexible connector. Wherein fixed mounting seat includes elasticity holder, locating part and base 11, and the cross-section of base 11 is squarely, and the elasticity holder uses the axis of base 11 as the symmetry axis, and the symmetry sets up in the inboard of base 11 to at the inside centre gripping space to pulse eddy current sensor that forms of base 11, pulse eddy current sensor joint is in centre gripping space. The limiting part is arranged on the outer side of the base 11 corresponding to the elastic clamping part so that the elastic clamping part can slide along the direction towards/away from the pulse eddy current sensor, and one end of the flexible connecting part is connected with the base 11.
As shown in fig. 3, in the present embodiment, the pulse eddy current sensor includes a bobbin 33, an excitation coil 32 and a detection coil 31 wound on the bobbin 33, and a housing 34, the bobbin 33 is disposed in the housing 34, a wire connection port 341 is disposed above the housing 34, an output end of the excitation coil 32 and an output end of the detection coil 31 are connected to the wire connection port 341, and the housing 34 is clamped in the clamping space. It should be noted that the fixed mounting seat is mounted on the outer side wall of the metal pipeline in the embodiment, but can be fixedly mounted on the outer side wall of the heat insulation layer of the metal pipeline.
The pulse eddy current sensor device for metal pipeline corrosion monitoring that this embodiment provided, just can monitor metal pipeline's wall thickness under the condition of the heat preservation of not tearing metal pipeline open through setting up pulse eddy current sensor, the installation and the dismantlement of pulse eddy current sensor at the metal pipeline lateral wall have been convenient for through setting up fixed mounting seat and flexonics spare, thereby install the wall thickness attenuate that pulse eddy current sensor can real-time detection metal pipeline corrosion lead to on metal pipeline's lateral wall through fixing device and avoided examining because of the hourglass that periodic detection caused, the higher defect of human cost, the security that metal pipeline used has been improved.
Specifically, the base 11 is a rectangular parallelepiped provided with a containing cavity, and one end of the base 11 is open. Wherein, the symmetry is provided with the elasticity holder on the inside lateral wall all around of base 11, and wherein, the elasticity holder of relative setting can be dismantled with pulse eddy current sensor both ends respectively and be connected, and the relative elasticity holder that sets up can adjust the distance of the relative elasticity holder that sets up in order to adapt to not equidimension pulse eddy current sensor finally with the stable centre gripping of pulse eddy current sensor in base 11 with pulse eddy current sensor's inside at base 11 through adjusting the locating part. In practical application's in-process, flexible connectors sets up in the both sides of base 11, through flexible connectors with the pulse eddy current sensor fixed mounting in the base 11 on metal pipeline's lateral wall or the lateral wall of metal pipeline heat preservation, can real-time supervision metal pipeline's wall thickness data.
The elastic clamping member is an elastic member 121, and the limiting member is a screw 122 fixedly connected to one side of the elastic member 121. The other side of elastic component 121 contradicts with pulse eddy current sensor, and after pulse eddy current sensor installed inside base 11 elastic component 121 compressed, the elastic component 121 of symmetry setting was through the resilience force with pulse eddy current sensor centre gripping inside base 11, made its stable installation inside base 11. Threaded holes matched with the threaded rods 122 are formed in the peripheral side wall of the base 11, the threaded rods 122 penetrate through the threaded holes to enable the elastic pieces 121 to be arranged inside the base 11, and the distance between the elastic pieces 121 which are arranged oppositely is adjusted through rotating the threaded rods 122. In the practical application process, due to the arrangement of the elastic members 121, the inside of the fixed mounting seat can adapt to a pulse eddy current sensor with a certain range of sizes, and when the compression amount of the elastic members 121 reaches the limit, the screw 122 can move outwards to increase the distance between the two elastic members 121 by rotating the screw 122; when the elastic members 121 are not resilient enough to hold the pulse eddy current sensor of an undersized size, the screw 122 may be rotated in reverse, and the screw 122 moves inward to reduce the distance between the two opposite elastic members 121, so that the fixed mount can accommodate a wider range of sizes of pulse eddy current sensors due to the arrangement of the screw 122.
Of course, after the flexible connector installs base 11 at the lateral wall of metal pipeline, thereby the accessible is adjusted the relative screw rod 122 that sets up and is finely tuned pulse eddy current sensor's position, makes pulse eddy current sensor can be more accurate the monitoring metal pipeline on need be monitored the position of wall thickness. Wherein, for better fixed pulse eddy current sensor, can all set up relative elasticity holder at base 11 inside all around the lateral wall, set up elasticity holder simultaneously along the axial of base 11 and radial promptly.
Of course, the elastic clamping member may also be the elastic member 121, the limiting member may be a supporting rod 131 fixedly connected to one side of the elastic member 121, and the fixed mounting seat further includes a limiting plate 132. The other side of elastic component 121 contradicts with pulse eddy current sensor, and after pulse eddy current sensor installed inside base 11 elastic component 121 compressed, the elastic component 121 of symmetry setting was through the resilience force with pulse eddy current sensor centre gripping inside base 11, made its stable installation inside base 11. The through holes matched with the support rod 131 are formed in the peripheral side wall of the base 11, the support rod 131 penetrates through the through holes to arrange the elastic part 121 in the base 11, the threaded section 1311 is formed in the support rod 131, the limiting plate 132 is sleeved on the threaded section 1311 of the support rod 131 and screwed with the threaded section 1311, and the limiting plate 132 is fixedly connected with the base 11 through the locking piece 133.
In the practical application process, due to the arrangement of the elastic member 121, the fixed mounting seat can adapt to the pulsed eddy current sensor with a certain range of sizes, when the compression amount of the elastic member 121 reaches the limit, the limiting plate 132 on the threaded section 1311 can be rotated, the length of the supporting rod 131 which can extend into the base 11 is reduced, that is, the distance between two opposite elastic members 121 is increased, when the resilience force of the elastic member 121 is not enough to clamp the pulsed eddy current sensor with an excessively small size, the limiting plate 132 on the threaded section 1311 can be rotated in the opposite direction, and the length of the supporting rod 131 which can extend into the base 11 is increased, that is, the distance between two opposite elastic members 121 is reduced, so due to the arrangement of the limiting plate 132 and the threaded section 1311, the fixed mounting seat can adapt to the pulsed eddy current.
In order to further enhance the stability of the elastic member 121 on the fixed mounting seat for clamping the pulse eddy current sensor, the fixed mounting seat further comprises a sliding rod 134 and a sliding groove 135. The sliding rod 134 is connected to the supporting rod 131, the sliding rod 134 is perpendicular to the supporting rod 131, two ends of the sliding rod 134 extend into the sliding groove 135, and the sliding rod 134 can slide in the sliding groove 135.
The pulse eddy current sensor device for monitoring the corrosion of the metal pipeline further comprises a top cover (not shown in the figure) matched with the opening of the base 11, and the top cover is matched with the base 11 to press the pulse eddy current sensor on the bottom surface of the base 11, so that the pulse eddy current sensor is better attached to the base 11.
As shown in fig. 1-2, the flexible connector includes a first flexible member 21 and a second flexible member 22, one end of the first flexible member 21 and one end of the second flexible member 22 are respectively connected to two sides of the fixed mounting seat, and the other end of the first flexible member 21 is connected to the other end of the second flexible member 22, so as to fix the fixed mounting seat on the outer side wall of the metal pipeline. Wherein, the flexible piece can be the bandage, is provided with the magic at the tip of first bandage and pastes the box, is provided with the magic subsides that correspond with the magic subsides box at the opposite side of second bandage and buckles.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.
Claims (9)
1. The pulse eddy current sensor device for monitoring the corrosion of the metal pipeline is characterized by comprising a pulse eddy current sensor and a fixing device;
the fixing device comprises a flexible connecting piece and a fixing mounting seat, and the fixing mounting seat is mounted on the outer side wall of the metal pipeline or the outer side wall of the metal pipeline heat-insulating layer through the flexible connecting piece;
the fixed mounting seat comprises an elastic clamping piece, a limiting piece and a base (11);
the section of the base (11) is square, the elastic clamping pieces are symmetrically arranged on the inner side of the base (11) by taking the central axis of the base (11) as a symmetry axis so as to form a clamping space for the pulse eddy current sensor in the base (11), and the pulse eddy current sensor is clamped in the clamping space;
the limiting piece is arranged on the outer side of the base (11) corresponding to the elastic clamping piece, so that the elastic clamping piece slides along the direction towards/away from the pulse eddy current sensor;
one end of the flexible connecting piece is connected with the base (11).
2. The pulsed eddy current sensor apparatus for metal pipe corrosion monitoring as claimed in claim 1,
the elastic clamping piece is an elastic piece (121), and the limiting piece is a screw (122) fixedly connected with one side of the elastic piece (121);
the other side of the elastic piece (121) is abutted against the pulse eddy current sensor, and the pulse eddy current sensor is clamped inside the base (11) by the symmetrically arranged elastic piece (121);
the base (11) is provided with a threaded hole matched with the screw rod (122), the screw rod (122) penetrates through the threaded hole to arrange the elastic piece (121) in the base (11), and the distance between the elastic pieces (121) which are oppositely arranged is adjusted by rotating the screw rod (122).
3. The pulsed eddy current sensor apparatus for metal pipe corrosion monitoring as claimed in claim 1,
the elastic clamping piece is an elastic piece (121), the limiting piece is a supporting rod (131) fixedly connected with one side of the elastic piece (121), and the fixed mounting seat further comprises a limiting plate (132);
the other side of the elastic piece (121) is abutted against the pulse eddy current sensor, and the pulse eddy current sensor is clamped inside the base (11) by the symmetrically arranged elastic piece (121);
the base (11) is provided with a through hole matched with the supporting rod (131), and the supporting rod (131) penetrates through the through hole to arrange the elastic piece (121) in the base (11);
the supporting rod (131) is provided with a threaded section (1311), the limiting plate (132) is sleeved on the threaded section (1311) of the supporting rod (131) and is screwed with the threaded section (1311), and the limiting plate (132) is fixedly connected with the base (11) through a locking piece (133).
4. The pulsed eddy current sensor apparatus for metal pipe corrosion monitoring as claimed in claim 3,
the fixed mounting seat also comprises a sliding rod (134) and a sliding groove (135);
the sliding rod (134) is connected with the supporting rod (131), the sliding rod (134) is perpendicular to the supporting rod (131), and two ends of the sliding rod (134) extend into the sliding groove (135) respectively to slide in the sliding groove (135).
5. The pulsed eddy current sensor apparatus for metal pipe corrosion monitoring as claimed in claim 1,
the base (11) is a cuboid provided with a containing cavity, and one end of the base (11) is open.
6. The pulsed eddy current sensor apparatus for metal pipe corrosion monitoring as claimed in claim 5,
also comprises a top cover matched with the opening of the base (11).
7. The pulsed eddy current sensor apparatus for metal pipe corrosion monitoring as claimed in claim 6,
the elastic clamping pieces are oppositely arranged on the peripheral side walls of the base (11).
8. The pulsed eddy current sensor apparatus for metal pipe corrosion monitoring as claimed in claim 1,
the pulse eddy current sensor comprises a framework (33), an excitation coil (32), a detection coil (31) and a shell (34), wherein the excitation coil and the detection coil are wound on the framework, and the framework (33) is arranged in the shell (34);
a wiring port (341) is arranged above the shell (34), and the output ends of the exciting coil (32) and the detecting coil (31) are connected with the wiring port (341);
the shell (34) is clamped in the clamping space.
9. The pulsed eddy current sensor apparatus for metal pipe corrosion monitoring as claimed in claim 1,
the flexible connecting piece comprises a first flexible piece (21) and a second flexible piece (22), one end of the first flexible piece (21) and one end of the second flexible piece (22) are respectively connected with two sides of the fixed mounting seat, and the other end of the first flexible piece (21) is connected with the other end of the second flexible piece (22) so as to fix the fixed mounting seat on the outer side wall of the metal pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011411423.4A CN112730604B (en) | 2020-12-04 | 2020-12-04 | Pulsed eddy current sensor device for corrosion monitoring of metal pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011411423.4A CN112730604B (en) | 2020-12-04 | 2020-12-04 | Pulsed eddy current sensor device for corrosion monitoring of metal pipeline |
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| CN112730604B CN112730604B (en) | 2024-03-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484297A (en) * | 2022-01-25 | 2022-05-13 | 汉朝智慧科技(南京)有限公司 | Pipe network leakage monitoring system |
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