CN106324085A - Pulse eddy current testing probe - Google Patents
Pulse eddy current testing probe Download PDFInfo
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- CN106324085A CN106324085A CN201610769847.5A CN201610769847A CN106324085A CN 106324085 A CN106324085 A CN 106324085A CN 201610769847 A CN201610769847 A CN 201610769847A CN 106324085 A CN106324085 A CN 106324085A
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- current testing
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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
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
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- Health & Medical Sciences (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention relates to a pulse eddy current testing probe. The probe comprises a trapezoid winding core, exciting coils, testing coils, a coil cabin and a testing probe casing, wherein the trapezoid winding core adopts a conical structure with the diameter uniformly changing from the top end to the bottom end, and a round hole is formed in the middle. Multiple turns of exciting coils and testing coils wind around the trapezoid winding core, the coil cabin is arranged on the outermost layer of the exciting coils and the testing coils, and the testing probe casing is arranged outside the coil cabin. A parallel winding manner is adopted for the exciting coils and the testing coils. The number of turns of the exciting coils is equal to that of the testing coils; the radial direction of the trapezoid winding core, the number of turns of the exciting coils and the thickness of the testing coils are changed uniformly. Amplification and extraction of useful signals are facilitated, and the accuracy of measurement results is guaranteed.
Description
Technical field
The present invention relates to a kind of Pulsed eddy current testing probe, especially with regard to what a kind of field of oil gas field at sea used
Pulsed eddy current testing is popped one's head in.
Background technology
At present, existing more than 40 countries and regions, the whole world are exploited at more than 150 offshore oil and gas fields, and Crude Oil at Sea produces
Amount increases year by year.The submarine oil abundance of Chinese Continental Shelf, the offshore oil and gas field having verified industrial value includes Bohai Sea
All China Seas at sea, the Huanghai Sea, the East Sea and the South Sea.Submerged pipeline is the important component part of exploitation of offshore oil and gas system,
The design of submerged pipeline, construct, the even maintenance stage of running all also exists potential safety hazard complicated and changeable.Once accident occurs,
Huge structural penalties, economic loss, construction delay, environmental pollution and severe social influence will be caused, therefore to seabed
The detection of corrosive pipeline is just particularly important.
Pulsed eddy current testing technology is compared relative to other detection methods has lot of advantages, and Pulsed eddy current testing can be real
The most do not dismantle duct wrap layer, need not shut down, and be suitable for quick scanning detection.Testing result is not by pipe surface
The impact of situation, detection method economy, human cost are low, safety good.
And detection probe is an important ingredient in Pulsed eddy current testing device, the detection to signal of the existing probe
Precision is inadequate, and is difficult to the collection to useful signal, and this directly influences the accuracy of testing result.Extract useful signal pair
The development of submarine pipeline Pulsed eddy current testing technology has great importance.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide a kind of Pulsed eddy current testing probe, it is conducive to useful signal
Amplification and extraction, it is ensured that the accuracy of measurement result.
For achieving the above object, the present invention takes techniques below scheme: a kind of Pulsed eddy current testing is popped one's head in, it is characterised in that
It includes trapezoidal around core, excitation coil, detection coil, coil cabin and detection probe shell；Described trapezoidal around core employing
Diameter is from top to the conical structure of bottom even variation, and centre is provided with a circular hole；Described trapezoidal around core outer around
Make excitation coil described in some circles and described detection coil, described excitation coil and described detection coil outermost layer and be provided with described
Coil cabin, the outside in described coil cabin is provided with described detection probe shell.
Preferably, described excitation coil and described detection coil use parallel winding method.
Preferably, the number of turn of described excitation coil is identical with the number of turn of described detection coil；The described trapezoidal footpath around core
To direction, the number of turn of described excitation coil and the thickness of described detection coil are even variation.
Preferably, described trapezoidal nonferromugnetic material is all used around core and described detection probe shell.
Preferably, described trapezoidal PP material is used around core and described detection probe shell.
Due to the fact that and take above technical scheme, it has the advantage that 1, the present invention uses change coil turn and
Winding method regulates the Pulsed eddy current testing probe of gain.2, the present invention uses increase eddy current radial distribution density, is conducive to
The amplification of useful signal and extraction, reduce the noise jamming between coil, it is ensured that the accuracy of measurement result.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention；
Fig. 2 is the top view of Fig. 1.
Detailed description of the invention
With embodiment, the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, the present invention provides a kind of Novel pulse eddy current probe, it include trapezoidal around core 1, swash
Encourage coil 2, detection coil 3, coil cabin 4 and detection probe shell 5.Trapezoidal around core 1 use diameter from top to bottom equal
The conical structure of even change, and centre is provided with a circular hole, for inserting the arbor of coil winding machine, facilitate coil around
System.Trapezoidal arrange with detection coil 3, excitation coil 2 and detection coil 3 outermost layer around the outer coiling of core 1 some circles excitation coil 2
Having coil cabin 4, coil cabin 4 to be used for protecting excitation coil 2 and detection coil 3, the outside in coil cabin 4 is provided with detection and visits
Head shell 5, is used for fixing whole Pulsed eddy current testing probe.
In above-described embodiment, excitation coil 2 and detection coil 3 use parallel winding method, are used for eliminating between signal
Influence.Excitation coil 2 and detection coil 3 are in winding process, and one layer of limit of every coiling carries out gluing operation, enters coil
Row is fixing, prevents excitation coil 2 and detection coil 3 loose.
In the various embodiments described above, the number of turn of excitation coil 2 is identical with the number of turn of detection coil 3.The trapezoidal radial direction around core 1
Direction, the thickness of the number of turn of excitation coil 2 and detection coil 3 is even variation, increases eddy current radially-arranged density model
Enclose, regulate gain, extract useful signal more intuitively, it is ensured that the accuracy of measurement result.
In the various embodiments described above, trapezoidal all use nonferromugnetic material around core 1 and detection probe shell 5, be used for eliminating
Interference to detection signal, trapezoidal around core 1 with the preferred PP material of detection probe shell 5.
In the various embodiments described above, Pulsed eddy current testing probe can be not only used for the detection of sub sea bottom pipeline, and
May be used for land pipelines detection.
The various embodiments described above are merely to illustrate the present invention, the structure of each parts, size, arrange position and shape is all permissible
Be varied from, on the basis of technical solution of the present invention, all improvement individual part carried out according to the principle of the invention and etc.
With conversion, the most should not get rid of outside protection scope of the present invention.
Claims (5)
1. a Pulsed eddy current testing probe, it is characterised in that: it includes trapezoidal around core, excitation coil, detection coil, coil
Cabin and detection probe shell；Described trapezoidal around core use diameter from top to the conical structure of bottom even variation, and
And centre is provided with a circular hole；Described trapezoidal around excitation coil and described detection coil described in the outer some circles of coiling of core, described
Excitation coil and described detection coil outermost layer are provided with described coil cabin, and the outside in described coil cabin is provided with described inspection
Survey probing shell.
2. a kind of Pulsed eddy current testing probe as claimed in claim 1, it is characterised in that: described excitation coil and described detection
Coil uses parallel winding method.
3. a kind of Pulsed eddy current testing probe as claimed in claim 1 or 2, it is characterised in that: the number of turn of described excitation coil
Identical with the number of turn of described detection coil；The described trapezoidal radial direction around core, the number of turn of described excitation coil and described inspection
The thickness of test coil is even variation.
4. Pulsed eddy current testing probe as claimed in claim 1 a kind of, it is characterised in that: described trapezoidal around core with described inspection
Survey probing shell and all use nonferromugnetic material.
5. Pulsed eddy current testing probe as claimed in claim 4 a kind of, it is characterised in that: described trapezoidal around core with described inspection
Survey probing shell and use PP material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769847.5A CN106324085A (en) | 2016-08-30 | 2016-08-30 | Pulse eddy current testing probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769847.5A CN106324085A (en) | 2016-08-30 | 2016-08-30 | Pulse eddy current testing probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106324085A true CN106324085A (en) | 2017-01-11 |
Family
ID=57788321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610769847.5A Pending CN106324085A (en) | 2016-08-30 | 2016-08-30 | Pulse eddy current testing probe |
Country Status (1)
| Country | Link |
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| CN (1) | CN106324085A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398780A (en) * | 2019-07-11 | 2019-11-01 | 陕西国防工业职业技术学院 | A kind of sensor device for transient electromagnetic exploration |
| CN113702488A (en) * | 2021-09-09 | 2021-11-26 | 国家石油天然气管网集团有限公司华南分公司 | Coaxial circular rectangular double-coil eddy current probe |
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| SU1330540A1 (en) * | 1985-09-24 | 1987-08-15 | Институт Физики Ан Азсср | Eddy-current converter for measuring electric conduction |
| RU2204131C2 (en) * | 2001-05-03 | 2003-05-10 | Уфимский государственный нефтяной технический университет | Electromagnetic converter |
| CN201935897U (en) * | 2010-12-29 | 2011-08-17 | 华南理工大学 | Multi-phase multi-pole eddy current probe |
| CN102396134A (en) * | 2009-02-13 | 2012-03-28 | Isis创新有限公司 | Electric machine - cooling |
| CN103140668A (en) * | 2010-10-05 | 2013-06-05 | 罗伯特·博世有限公司 | Ignition coil with a reduced number of components |
| CN103487503A (en) * | 2013-09-26 | 2014-01-01 | 上海海事大学 | Rotating magnetic field eddy current detection probe |
| CN203607210U (en) * | 2013-10-18 | 2014-05-21 | 铜陵三佳变压器有限责任公司 | High-voltage transformer convenient to install |
| CN204346974U (en) * | 2015-01-06 | 2015-05-20 | 华中科技大学 | A kind of pulse eddy current probe |
| CN104823358A (en) * | 2012-11-28 | 2015-08-05 | 萨甘安全防护公司 | Rotor of an electric motor, with an outer sleeve formed by winding, method for producing such a rotor, and electric motor comprising such a rotor |
| CN105044201A (en) * | 2015-07-17 | 2015-11-11 | 国家电网公司 | Saddle-shaped open vortex detection device and vortex detection method |
| CN105717192A (en) * | 2016-04-11 | 2016-06-29 | 爱德森（厦门）电子有限公司 | Sensor for online and high-temperature eddy current monitoring |
| CN105891324A (en) * | 2016-04-06 | 2016-08-24 | 中国海洋石油总公司 | Seafloor pulse vortex detection probe |
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2016
- 2016-08-30 CN CN201610769847.5A patent/CN106324085A/en active Pending
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|---|---|---|---|---|
| SU1330540A1 (en) * | 1985-09-24 | 1987-08-15 | Институт Физики Ан Азсср | Eddy-current converter for measuring electric conduction |
| RU2204131C2 (en) * | 2001-05-03 | 2003-05-10 | Уфимский государственный нефтяной технический университет | Electromagnetic converter |
| CN102396134A (en) * | 2009-02-13 | 2012-03-28 | Isis创新有限公司 | Electric machine - cooling |
| CN103140668A (en) * | 2010-10-05 | 2013-06-05 | 罗伯特·博世有限公司 | Ignition coil with a reduced number of components |
| CN201935897U (en) * | 2010-12-29 | 2011-08-17 | 华南理工大学 | Multi-phase multi-pole eddy current probe |
| CN104823358A (en) * | 2012-11-28 | 2015-08-05 | 萨甘安全防护公司 | Rotor of an electric motor, with an outer sleeve formed by winding, method for producing such a rotor, and electric motor comprising such a rotor |
| CN103487503A (en) * | 2013-09-26 | 2014-01-01 | 上海海事大学 | Rotating magnetic field eddy current detection probe |
| CN203607210U (en) * | 2013-10-18 | 2014-05-21 | 铜陵三佳变压器有限责任公司 | High-voltage transformer convenient to install |
| CN204346974U (en) * | 2015-01-06 | 2015-05-20 | 华中科技大学 | A kind of pulse eddy current probe |
| CN105044201A (en) * | 2015-07-17 | 2015-11-11 | 国家电网公司 | Saddle-shaped open vortex detection device and vortex detection method |
| CN105891324A (en) * | 2016-04-06 | 2016-08-24 | 中国海洋石油总公司 | Seafloor pulse vortex detection probe |
| CN105717192A (en) * | 2016-04-11 | 2016-06-29 | 爱德森（厦门）电子有限公司 | Sensor for online and high-temperature eddy current monitoring |
Non-Patent Citations (1)
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| 陈朝晖: "基于涡流探伤原理的焊缝疲劳裂纹监测设计", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398780A (en) * | 2019-07-11 | 2019-11-01 | 陕西国防工业职业技术学院 | A kind of sensor device for transient electromagnetic exploration |
| CN113702488A (en) * | 2021-09-09 | 2021-11-26 | 国家石油天然气管网集团有限公司华南分公司 | Coaxial circular rectangular double-coil eddy current probe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant after: China Offshore Oil Group Co., Ltd. Applicant after: CNOOC research institute limited liability company Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant before: China National Offshore Oil Corporation Applicant before: CNOOC Research Institute |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170111 |