CN109073598A - The eddy current probe and switching device of more array coils - Google Patents
The eddy current probe and switching device of more array coils Download PDFInfo
- Publication number
- CN109073598A CN109073598A CN201680084765.5A CN201680084765A CN109073598A CN 109073598 A CN109073598 A CN 109073598A CN 201680084765 A CN201680084765 A CN 201680084765A CN 109073598 A CN109073598 A CN 109073598A
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- Prior art keywords
- eddy current
- coil
- current probe
- probe
- array
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Classifications
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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
-
- 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
-
- 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
- G01N27/9046—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 by analysing electrical signals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2200/00—Prediction; Simulation; Testing
- F28F2200/005—Testing heat pipes
Abstract
The present invention relates to a kind of methods in view of common cause accident design safety bus, wherein various design schemes are applied to security-related bus, and the safety bus for being connected to emergency diesel dynamo and the safety bus for being connected to stand-by alternator, which are arranged to, to be kept completely separate, to consider the common cause failure of their buses and ensure the diversity of emergency power supply.Therefore, safety bus is designed to even if the common cause failure that safety bus occurs, it powers also by basic load needed for safety shutdown of the stand-by alternator to power plant, and can obtain following effect: the safety bus for being connected to emergency diesel dynamo and stand-by alternator is separated from each other, load is separated, to reduce the capacity of stand-by alternator.
Description
Technical field
The eddy current probe 200 of array coil of the invention includes eddy current coil, and the eddy current coil is in two rows of forms in week
It is densely arranged upwards, the interval holding between this two rows is constant, wherein having transmission and the received effect on week
Coil 210 is formed into rectangular shape, and axial detection coil 220 is formed as circular shape.It is more that the present invention relates to one kind
The eddy current probe of array coil and a kind of switching device can increase the overlapping of eddy region in the axial direction, be used for circumferential direction
Inspection, thus by the way that eddy current coil is formed as rectangular shape so that the length in axial direction is longer than existing circular shape,
To improve the feeding rate of probe.
Background technique
The present invention relates to a kind of array type eddy current probes, can be used for diagnosing the conduit 100 of the heat exchanger in power plant
Integrality.
The pipe of heat exchanger in power plant is made of light wall pipe, has good conductivity of heat, corrosion resistance and thin thickness,
To improve heat exchange performance.Since these light wall pipes keep pressure boundary and are exposed to the environment of very severe, can generate
Various defects, as between the crack as caused by high temperature and high pressure, pipe and pipe holder abrasion and dent.Therefore, in order to diagnose
The integrality of pipe and carry out regularly nondestructive inspection.The tubing of heat exchanger is mainly non-magnetic material, rather than magnetic
Material.The non-destructive testing method of the non magnetic pipe so thin as thickness, mainly uses eddy current inspection.
Apply high frequency (tens or several hundred) electric current by the coil of the eddy current probe into insertion tube, to generate whirlpool in pipe
Stream, to execute the eddy current inspection of heat exchanger tube, the vortex with the geometry of pipe, the electric conductivity of material and defect change
And change, and detect this variation with determine defect in the presence/absence of and measure their size.Spool (Bobbin)
Probe and rotary flat coil (Rotating Pancake Coil, RPC) probe have been used as the vortex for executing the inspection
Probe.
Traditional device, mechanism and operating principle is described below.
Spool probe is such a device, is wherein wrapped in coil axis two coils loops identical with pipe axis
In one main body and there is constant interval.The two coils may be performed simultaneously difference modes inspection and absolute mode inspection
It looks into, allows to quickly check the whole region of light wall pipe.However, the inspection is easy to be influenced by axial crack, while it has
Have the shortcomings that insensitive to the crack in circumferential direction.
RPC probe is configured to for pancake coil being placed on the surface of probe body, and coil axis is perpendicular to pipe
Surface, to make main body rotation execute inspection by driving device.RPC probe checks the defects detection performance in axial and circumferential
Aspect is excellent in, but checks that speed is very slow, so that after carrying out first time inspection with bobbin probe, only for pipe
The upper end of plate or suspected defects component carry out RPC inspection.
The technology for the advantages of overcoming disadvantages mentioned above and being checked using above two probe is the vortex using more array coils
The Examined effect of probe.
In the art, eddy current coil is two-dimensionally arranged in the circumferential, and multiple individual lines are electronically controlled
Circle.As shown in fig. 1, it by sending and receiving in all directions, can arranged in the case where no mechanical rotation
Have and executes eddy current inspection using electron scanning on the region of coil.Pass through this electron scanning, the Examined effect benefit of eddy current probe
With spool pop one's head in quick inspection the advantages of and RPC probe check can suitable application region obtain 2D/3D image the advantages of come
Shorten the review time and improves inspection reliability.
Problem of the prior art is discussed below.
The eddy current probe of traditional array coil has the round flatwise coil for being circumferentially densely populated two rows or three rows.
In addition, the use of multiplexer (MUX) being for selecting the switching device for sending and receiving coil for electron scanning.
The device has the function of that sequential selection sends and receives coil and reduces the number of conductors for being connected to vortex device, because of conducting wire
One of by switching be connected to multiple coils.The switching device is inserted into spy in the form of small-sized ASIC (specific integrated circuit)
In head, or it is mounted in the main body of eddy current inspection apparatus.
The problem of being discussed below using circular coil.
As shown in fig. 1, for send and a pair received in the axial direction send and receive coil for detect it is axial
Crack, and for sending with received a pair of of coil in the circumferential for detecting circumferential crack.
In this case, which has for the sample frequency of constant time intervals acquisition signal.
In other words, by the way that the feeding rate of probe and signal acquisition frequency multiplication are determined signal acquisition interval distance
From.For the crack circumferential with highly sensitive detection, the signal acquisition interval of coil should be shorter than coil axial length to acquire letter
Number, while the eddy region overlapping checked when each signal acquisition.
Therefore, in order to improve the detection sensitivity in circumferential crack, need to reduce the feeding rate of probe to reduce signal
Acquisition interval increases the axial length of coil to increase the axial overlap length of the eddy region for circumferentially checking.However,
In order to increase spatial resolution, it is disposed with multiple coils in the circumferential, therefore in the case where circular coil, diameter becomes smaller, and makes
Axial length is obtained inevitably to shorten.
Due to the above reasons, in order to improve detection sensitivity, feeding rate should be adjusted according to coil axial length.
The problem of being described below when multiplexer insertion is popped one's head in.
Eddy current probe is the consumables during checking multiple pipes due to wear or hitting and damaging.Coil or switching device
Failure may cause abnormal signal.However, as switching device be in the form of small chip made of, therefore, it is difficult to repair this
Device, and the failure of coil even also results in the discarded of entire eddy current probe.In this case, wherein inserted with small-sized
The eddy current probe of the array coil of asic chip is expensive, and many costs may be spent in inspection.In addition, send and
The selecting sequence of receiving coil is just fixed during fabrication, and can not be checked in various patterns.
The problem of being described below when multiplexer is installed on vortex device.
When the quantity of coil is n, the cable of eddy current probe is made of n root conducting wire, therefore the diameter of cable becomes larger, thus
Make the deteriorated flexibility of cable, thus it can be difficult to check the bending part of cable.
In addition, as shown in Figure 2, since the probe inserter for being inserted into/extracting probe is equipped with rotating part, needing
Want slip ring that probe is connected to eddy current inspection apparatus.However, the slip ring with multiple channels is expensive and there may be make an uproar
Sound.
Summary of the invention
[technical problem]
The problem to be solved in the present invention is a kind of for diagnosing the array type of the catheter integrity of heat exchanger in power plant
Eddy current probe.Designed and manufacture array type eddy current probe includes circumferential inspection coil, the inspection coil be formed as along
Axial rectangular shape, to improve the detection sensitivity of circumferential defect and check speed.
In addition, the problem to be solved in the present invention is, the switching device in array type eddy detection system is designed and manufactured
For the individual module of the eddy current probe independently of array coil, manufacturing cost to reduce as the eddy current probe of consumables and
Minimize the port number of slip ring, this can save its manufacturing cost and prevent noise.By using for mode determine can
The connection adapter of disassembly can utilize the switching device in the various modes, can choose switching device and probe connection
Mode between device, to improve the reliability checked.
[technical solution]
The solution of problem of the invention is a kind of eddy current probe of array coil, can check heat exchanger
Pipe, comprising: the axial detection coil for the circular shape intensively arranged in the circumferential；Transmission and circumference with rectangular shape receive
Coil is densely mounted on the lower part of the axial detection coil in the circumferential and has transmission vortex and connect in the circumferential
The effect of receipts, wherein the transmission and circumference receiving coil are arranged to rectangular shape axially, to increase eddy region
Axial overlap length, for circumferential inspection, and increase the feeding rate of probe.
The another solution of problem of the invention is to provide a kind of eddy current probe of array coil, can check heat
The pipe of exchanger, since the square coil of eddy current probe makes direction and the fractuer direction square crossing of vortex, it is possible to mention
The detection sensitivity of high-eddy.
The another solution of problem of the invention is to provide a kind of eddy current probe of array coil, can check heat
The pipe of exchanger, the eddy current probe are provided with the switching device of individual module type, the vortex of the switching device and array coil
Probe separate configuration, and receiving coil selection signal is with sequential selection coil.
The another solution of problem of the invention is to provide a kind of dismountable connection adapter, can select to cut
Checking mode between changing device and probe connector.
[invention effect]
The present invention relates to a kind of array type eddy current probe, for diagnose the heat exchanger in power plant conduit it is complete
Property.There is array type eddy current probe of the invention circumference to check that coil, the circumference check that coil is formed as axially rectangular
Shape shape, to improve the detection sensitivity of circumference defect and check speed.
Another effect of the invention is that the switching device in array type eddy detection system is designed and manufactured to independence
In the individual module of the eddy current probe of array coil, to reduce manufacturing cost and minimum as the eddy current probe of consumables
The port number of slip ring, this can save its manufacturing cost and prevent noise.Switched by using dismountable connection adapter
Mode decision is carried out between device and probe connector, can utilize switching device in various patterns, to improve the reliable of inspection
Property.
Detailed description of the invention
Fig. 1 shows the pattern for sending and receiving eddy current probe of array coil according to the present invention.
Fig. 2 shows the eddy-current system configuration diagram of array coil according to the present invention and the shapes of probe and coil.
Fig. 3 shows connecing for switching device according to the present invention and the connection adapter for sending/receiving type checking mode I
Line chart.
Fig. 4 shows a series of coils of transmission according to the present invention/reception type checking mode I selection pattern.
Fig. 5 is the wiring diagram of transmission according to the present invention/reception type checking mode II connection adapter.
Fig. 6 shows a series of coils of transmission according to the present invention/reception type checking mode II selection pattern.
Fig. 7 shows according to the present invention for describing the wiring diagram of the connection adapter of the checking mode I of light wall pipe profile.
Fig. 8 shows a series of coils selection pattern according to the present invention for describing the checking mode I of pipe profile.
Fig. 9 shows according to the present invention for describing the wiring diagram of the connection adapter of the checking mode II of pipe profile.
Figure 10 shows a series of coils selection pattern according to the present invention for describing the checking mode II of pipe profile.
Figure 11 shows the wiring diagram of the connection adapter according to the present invention for dividing checking mode for axial difference.
Figure 12 shows a series of coils selection pattern according to the present invention for dividing checking mode for axial difference.
Specific embodiment
Hereinafter, it will be described in the present invention.
The array type eddy current probe of the pipe according to the present invention that can check heat exchanger is rectangular with being axially formed
The transmission of shape shape and circumference check coil, to increase the Crack Detection sensitivity in circumferential direction.
In the construction of array type eddy current inspection system, the eddy current probe and switching device of array coil divide independently of one another
From, and the number of channels that slip ring is reduced between array type eddy current probe and slip ring is arranged in switching device.
As shown in Fig. 2, since the probe inserter for being inserted into/extracting probe is equipped with rotating part, it is therefore desirable to slip ring
Probe is connected to eddy current inspection apparatus.However, the slip ring with multiple channels is expensive and there may be noises.
Switching device is equipped with dismountable connection adapter, between switching device connector and probe connector
Mode determines, to check switching device in various patterns.
Preferably, the connection adapter determined for mode is designed and manufactured to detachably.
In addition, carrying out mode decision by using dismountable connection adapter, mode decision can choose switching dress
The mode between connector and probe connector is set, can be checked in various patterns by the replacement between mode.
As shown in Fig. 2, the eddy current probe 200 of array coil according to the present invention is provided in two rows of forms in the circumferential
The eddy current coil being densely arranged.
Eddy current probe 200 includes: circular axial eddy detection coil 220, is densely arranged and examines in the circumferential
Survey the vortex in axial direction；And transmission and the circumference receiving coil 210 of rectangular shape, it is densely mounted on axis in the circumferential
To test coil of eddy current 220 lower part (referring to fig. 2) and have send vortex and received effect in the circumferential.
Transmission and circumference receiving coil of the invention is arranged to rectangular shape axially, to increase eddy region
Axial overlap length, the inspection in circumferential direction, and increase the feeding rate of probe.
More specifically, the interval holding between the row of above-mentioned eddy current coil is constant, and has and circumferentially to send and receive
The coil 210 of effect is along axial direction and is axially formed rectangular shape.Test coil of eddy current 220 is formed as round.With send and
The coil 210 of received effect configures in a rectangular shape in the circumferential, so that axial length is longer than traditional circular shape.Knot
Fruit can increase the axial overlap length of eddy region, the inspection in circumferential direction, and can also increase the feed speed of probe
Degree.
In addition, being vortexed the susceptibility highest of fracture when the direction of vortex is perpendicular to fractuer direction.By according to the present invention
The vortex that generates of square coil there are following advantageous effects: the detection sensitivity of vortex can be increased, because it is close to vertical
In the crack in circumferential direction.
Fig. 3 shows the connection that switching device according to the present invention and the mode for transmitting/receiving type checking mode I determine
The wiring diagram of adapter.
In Fig. 3, switching device 310 is designed and manufactured to the separate modular of the eddy current probe independently of array coil,
And it is located between array type eddy current probe and the slip ring 420 for apparatus for feeding 410 of popping one's head in.
Each MUX 330 in switching device is programmed to from 430 receiving coil selection signal 340 of eddy current inspection apparatus,
To be sequentially switched to the i-th channel from first passage 1.
In this case, coil selection signal is used as the continuous signal of k bit signal or square-wave pulse.Coil quilt
It is chosen so as to sequentially be checked shown in Fig. 4 by switching every time.The switching device allows a small amount of logical using having
The quantity for the eddy current probe for having n root conducting wire is reduced to m (n > m) by the slip ring in road.By reduce slip ring channel quantity come
The problem of saving the cost of slip ring and preventing noise.
A kind of eddy current signal for generating the coil being mounted in eddy current probe is provided and is sent to pipe vortex detection device
430 cable.
In the case where the quantity of coil is n, the cable of eddy current probe is made of n root or more conducting wire, therefore cable
Diameter may it is larger, to make the deteriorated flexibility of cable and make it difficult to check in bend pipe.
Since many conducting wires lead to major diameter, the cable of probe may have the problem of deteriorated flexibility.Therefore, it is intended that using
It is widely used in micro- more (micro-multi) coaxial cables for the treatment of purpose.
As shown in Figure 3, the dismountable connection adapter 310 determined for mode is located at switching device and array molded line
It encloses between probe connector.
Mode determines that connection adapter can be configured to change transmission/reception sequence of array coil, and therefore can be with
According to the inspectoral transmission needed to increase in circumferential direction/reception interval and can be by using identical as transmitters and receivers
Coil carry out the shape contour of measurement pipe.
Furthermore it is possible to collect axial eddy signal with difference modes.By replacement connection adapter to carry out mode decision,
It can easily realize this model selection.
[industrial feasibility]
The eddy current probe of array coil of the invention includes eddy current coil, the eddy current coil in two rows of forms in the circumferential
It is densely arranged, the interval holding between this two rows is constant, wherein having the line sent with received effect in the circumferential
Circle is formed into rectangular shape axially, and axial detection coil is formed circle.The present invention provides one kind and cuts
Changing device and a kind of eddy current probe of more array coils, can increase the axial overlap length of eddy region, be used for circumferential direction
Inspection, thus by the way that axial detection coil is formed as rectangular shape, so that the length in axial direction is than existing round shape
Shape is long, to improve the feeding rate of probe.
Claims (7)
1. a kind of eddy current probe of array coil, can check the pipe of heat exchanger,
The eddy current probe is characterised by comprising: the axial detection coil for the circular shape intensively arranged in the circumferential
(220)；Transmission and circumference receiving coil (210) with circular shape are densely mounted on the axial detection in the circumferential
The lower part of coil and have send vortex and received effect in the circumferential,
It wherein the transmission and circumferentially receives coil and is arranged to rectangular shape axially, to increase the axial direction of eddy region
Overlap length for circumferential inspection, and increases the feeding rate of probe.
2. the eddy current probe of array coil according to claim 1,
Wherein the square coil of the eddy current probe is arranged so that direction and the fractuer direction square crossing of vortex, to increase whirlpool
The detection sensitivity of stream.
3. the eddy current probe of array coil according to claim 1,
Wherein the eddy current probe is provided with the switching device of the separate modular type separated with the eddy current probe of array coil, uses
In receiving coil selection signal to be sequentially selected coil.
4. the eddy current probe of array coil according to claim 3,
Wherein the switching device is arranged between the array type eddy current probe and slip ring, to reduce the port number of slip ring.
5. the eddy current probe of array coil according to claim 4,
Wherein the eddy current probe is further equipped with the dismountable connection adapter determined for mode, and the connection adapter can
To select the mode between switching device connector and probe connector, to be checked in various patterns.
6. the eddy current probe of array coil according to claim 5,
The connection adapter wherein determined for mode is manufactured into detachably.
7. the eddy current probe of array coil according to claim 1,
The line of pipe vortex detection device (430) is sent to including the vortex for generating the coil being mounted in the eddy current probe
Cable,
Wherein the cable is fabricated with micro- more coaxial cables.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160048020A KR101757589B1 (en) | 2016-04-20 | 2016-04-20 | An Eddy Current Probe with Multi-Array Coil and Switching Devic |
| KR10-2016-0048020 | 2016-04-20 | ||
| PCT/KR2016/009786 WO2017183772A1 (en) | 2016-04-20 | 2016-09-01 | Multi-array coil eddy current probe and switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109073598A true CN109073598A (en) | 2018-12-21 |
Family
ID=59352951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680084765.5A Pending CN109073598A (en) | 2016-04-20 | 2016-09-01 | The eddy current probe and switching device of more array coils |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101757589B1 (en) |
| CN (1) | CN109073598A (en) |
| WO (1) | WO2017183772A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611800A (en) * | 2020-11-16 | 2021-04-06 | 江苏安泰安全技术有限公司 | Rapid scanning method and system for detecting microcracks on surface of pressure equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487890B (en) * | 2019-07-15 | 2022-12-06 | 国核电站运行服务技术有限公司 | Eddy current array scanning device for J weld joint detection |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4808927A (en) * | 1987-02-19 | 1989-02-28 | Atomic Energy Of Canada Limited | Circumferentially compensating eddy current probe with alternately polarized receiver coil |
| US4855677A (en) * | 1988-03-11 | 1989-08-08 | Westinghouse Electric Corp. | Multiple coil eddy current probe and method of flaw detection |
| US5256966A (en) * | 1991-04-19 | 1993-10-26 | Combustion Engineering, Inc. | Method for detecting flaws in a steam generator tube using a flexible eddy current probe having coil bank switching |
| JPH10239283A (en) * | 1997-02-27 | 1998-09-11 | Genshiryoku Eng:Kk | Eddy current flaw-detecting probe |
| KR20020030127A (en) * | 2000-10-16 | 2002-04-24 | 최양우 | Probe for Eddy Current Inspection of Pressure Tube of Pressurizer Heavy Water Reactor |
| CN202101972U (en) * | 2011-05-19 | 2012-01-04 | 国核电站运行服务技术有限公司 | Vortex probe pushing-pulling device |
| JP2012122859A (en) * | 2010-12-08 | 2012-06-28 | Marktec Corp | Eddy current probe for flaw detection, eddy current device for flaw detection, and eddy current method for flaw detection |
| CN103149273A (en) * | 2013-02-07 | 2013-06-12 | 爱德森（厦门）电子有限公司 | Method and apparatus for eddy-based electronically-controlled scanning and monitoring |
| CN103868986A (en) * | 2012-12-13 | 2014-06-18 | 上海海事大学 | Eddy detection probe for detecting internal surface defects in metal pipelines and detection method thereof |
| CN204302230U (en) * | 2014-12-30 | 2015-04-29 | 中核武汉核电运行技术股份有限公司 | A kind of eddy current multiplexed array probe |
| US20150177191A1 (en) * | 2012-06-21 | 2015-06-25 | Eddyfi Ndt Inc. | High resolution eddy current array probe |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10142199A (en) * | 1996-11-08 | 1998-05-29 | Nuclear Fuel Ind Ltd | Wear inspecting device of control rod cluster |
| KR200307293Y1 (en) * | 2002-10-29 | 2003-04-18 | 한국전력공사 | Light-water reactor atomic reactor control rod aggregate eddy current prosecuting attorney Prove |
-
2016
- 2016-04-20 KR KR1020160048020A patent/KR101757589B1/en active IP Right Grant
- 2016-09-01 CN CN201680084765.5A patent/CN109073598A/en active Pending
- 2016-09-01 WO PCT/KR2016/009786 patent/WO2017183772A1/en active Application Filing
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4808927A (en) * | 1987-02-19 | 1989-02-28 | Atomic Energy Of Canada Limited | Circumferentially compensating eddy current probe with alternately polarized receiver coil |
| US4855677A (en) * | 1988-03-11 | 1989-08-08 | Westinghouse Electric Corp. | Multiple coil eddy current probe and method of flaw detection |
| US5256966A (en) * | 1991-04-19 | 1993-10-26 | Combustion Engineering, Inc. | Method for detecting flaws in a steam generator tube using a flexible eddy current probe having coil bank switching |
| JPH10239283A (en) * | 1997-02-27 | 1998-09-11 | Genshiryoku Eng:Kk | Eddy current flaw-detecting probe |
| KR20020030127A (en) * | 2000-10-16 | 2002-04-24 | 최양우 | Probe for Eddy Current Inspection of Pressure Tube of Pressurizer Heavy Water Reactor |
| JP2012122859A (en) * | 2010-12-08 | 2012-06-28 | Marktec Corp | Eddy current probe for flaw detection, eddy current device for flaw detection, and eddy current method for flaw detection |
| CN202101972U (en) * | 2011-05-19 | 2012-01-04 | 国核电站运行服务技术有限公司 | Vortex probe pushing-pulling device |
| US20150177191A1 (en) * | 2012-06-21 | 2015-06-25 | Eddyfi Ndt Inc. | High resolution eddy current array probe |
| CN103868986A (en) * | 2012-12-13 | 2014-06-18 | 上海海事大学 | Eddy detection probe for detecting internal surface defects in metal pipelines and detection method thereof |
| CN103149273A (en) * | 2013-02-07 | 2013-06-12 | 爱德森（厦门）电子有限公司 | Method and apparatus for eddy-based electronically-controlled scanning and monitoring |
| CN204302230U (en) * | 2014-12-30 | 2015-04-29 | 中核武汉核电运行技术股份有限公司 | A kind of eddy current multiplexed array probe |
Non-Patent Citations (3)
| Title |
|---|
| 蒋焕文 等: "《电子测量 第3版》", 29 February 2008, 中国计量出版社 * |
| 赵磊: "阵列涡流无损检测技术的研究及进展", 《无损探伤》 * |
| 郑玉东: "《通信电缆》", 31 December 1982, 机械工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611800A (en) * | 2020-11-16 | 2021-04-06 | 江苏安泰安全技术有限公司 | Rapid scanning method and system for detecting microcracks on surface of pressure equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101757589B1 (en) | 2017-07-12 |
| WO2017183772A1 (en) | 2017-10-26 |
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Application publication date: 20181221 |