CN110398780A - A kind of sensor device for transient electromagnetic exploration - Google Patents
A kind of sensor device for transient electromagnetic exploration Download PDFInfo
- Publication number
- CN110398780A CN110398780A CN201910622547.8A CN201910622547A CN110398780A CN 110398780 A CN110398780 A CN 110398780A CN 201910622547 A CN201910622547 A CN 201910622547A CN 110398780 A CN110398780 A CN 110398780A
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- sensor device
- coil
- transient electromagnetic
- receiving coil
- electromagnetic exploration
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- 230000001052 transient effect Effects 0.000 title claims abstract description 18
- 230000005284 excitation Effects 0.000 claims abstract description 20
- 239000004744 fabric Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 230000000873 masking effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 15
- 230000005672 electromagnetic field Effects 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 206010038743 Restlessness Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Power Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A kind of sensor device for transient electromagnetic exploration, including magnetic core, magnetic core is cylindrical, magnetic core is externally wrapped with receiving coil, tetrafluoro cloth is equipped between receiving coil and magnetic core, tapered sleeve is close in receiving coil periphery, and tapered sleeve is externally wrapped with excitation coil, it is equipped with magnetic shielding layer outside excitation coil, sensor outer housing is installed outside magnetic shielding layer.The present invention is conducive to increase the frequency content and focusing capability of electromagnetic field, improves the signal-to-noise ratio of detection signal, improves detection sensitivity and precision, it is ensured that the accuracy of detection.
Description
Technical field
The present invention relates to the sensor device technical fields of transient electromagnetic exploration, in particular to a kind of to survey for transient electromagnetic
The sensor device of spy.
Background technique
Petroleum gas limited liability company oil gas field runs pipeline overall length 30 × 10 online at present4Km, service life
Pipeline overall length 11.5 × 10 more than 10 years4km.Oil gas field pipeline many places have in exceedingly odious underground environment, the medium of conveying
There are the characteristics such as acid and inflammable, once corrosion failure occurs for pipeline, encounters open fire in pipeline medium leakage emptying gas and explode
Accident, this will be to causing huge economic loss, the adverse effects such as environmental pollution and social unrest, therefore to buried metal pipeline
The detection of wall thickness loss amount is very crucial, can find that the variation of pipeline wall thickness is prevented accident generation in time.
Transient electromagnetic method is a kind of Indirect testing technology, compared to Inner Examination Technology on Pipeline do not need to treat detection pipeline into
Row excavates and cleaning treatment, realizes that pipeline runs detection online, and smaller, detection efficiency height is influenced by environment locating for pipeline, at
This is low.
Sensor is critical component in transient electromagnetic method detection device, electromagnetic field of the existing sensor to the excitation in space
Frequency content is less and does not have constraint ability, does not have shield effectiveness to extraneous static magnetic, does not have gain function to signal is received, examines
It surveys accuracy and sensitivity and testing requirements is not achieved, directly influence the accuracy of testing result.
Summary of the invention
In order to solve the above technical problems, the purpose of the present invention is to provide a kind of sensors for transient electromagnetic exploration
Device is conducive to the frequency content and focusing capability that increase electromagnetic field, improves the signal-to-noise ratio of detection signal, improves detection sensitivity
And precision, it is ensured that the accuracy of detection.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of sensor device for transient electromagnetic exploration, including magnetic core 1, magnetic core 1 is cylindrical, the outside of magnetic core 1
Receiving coil 3 is wound, tetrafluoro cloth 2 is equipped between receiving coil 3 and magnetic core 1, tapered sleeve 4 is close in 3 periphery of receiving coil, tapered sleeve 4
It is externally wrapped with excitation coil 5, magnetic shielding layer 6 is equipped with outside excitation coil 5, sensor outer housing is installed outside magnetic shielding layer 6
7。
Using the conical structure of diameter even variation from top to bottom, constant inner diameter outside the tapered sleeve 4.
Using the conical structure of diameter even variation from bottom to up inside the excitation coil 5, with 4 outer diameter of tapered sleeve
Match, external diameter constant.
The enameled wire coiling clockwise that diameter is 1mm and 0.25mm is respectively adopted in the excitation coil 5 and receiving coil 3
It forms, 5 the number of turns of excitation coil is 300 circles and 3 the number of turns of receiving coil is 450 circles, 3 winding process of excitation coil 5 and receiving coil
Middle thickness even variation.
It is handled between every layer of the excitation coil 5 and receiving coil 3 by gluing.
The tapered sleeve 4 uses polytetrafluoroethylene (PTFE), and sensor outer housing 7 uses nonferromugnetic material.
The magnetic shielding layer 6 wraps up entire sensor internal structure, and magnetic shielding layer 6 uses the material of high magnetic permeability
Material.
Beneficial effects of the present invention:
1. the present invention, which uses, increases frequency content and focusing capability that magnetic method improves electromagnetic field, have to signal is received
There is enlarging function, improves detection sensitivity.2. the present invention is conducive to shield extraneous magnetostatic field to useful letter using magnetic shielding layer
Number influence, increase signal-to-noise ratio, improve detection accuracy, it is ensured that the accuracy of measurement result.
Detailed description of the invention
Fig. 1 is overall structure diagrammatic cross-section of the invention；
Fig. 2 is integrally-built top view of the invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, the present invention provides a kind of sensor device for transient electromagnetic exploration, it includes magnetic core 1,
Tetrafluoro cloth 2, receiving coil 3, tapered sleeve 4, excitation coil 5, magnetic shielding layer 6, sensor outer housing 7 and signal wire.Magnetic core 1 is in cylinder
Shape, magnetic core 1 are externally wrapped with receiving coil 3, tetrafluoro cloth 2 are equipped between receiving coil 3 and magnetic core 1, tapered sleeve 4 is using diameter from upper
To the conical structure of lower even variation, tapered sleeve 4 is close to receiving coil 3, and tapered sleeve 4 is externally wrapped with excitation coil 5, excitation coil 5
Outside is equipped with magnetic shielding layer 6, installs sensor outer housing 7 outside magnetic shielding layer 6.
In examples detailed above, the enameled wire up time that diameter is 1mm and 0.25mm is respectively adopted in excitation coil 5 and receiving coil 3
Needle coiling forms, 5 the number of turns of excitation coil be 300 circles and 3 the number of turns of receiving coil be 450 circles, excitation coil 5 and receiving coil 3 around
Thickness even variation during system, in order to eliminate mutual inductance effect between coil, one layer of every coiling must carry out gluing processing.
In examples detailed above, receiving coil 3 is wrapped in outside magnetic core 1, and tetrafluoro cloth is equipped between receiving coil 3 and magnetic core 1
2。
In examples detailed above, for tapered sleeve 4 using the conical structure of diameter even variation from top to bottom, tapered sleeve 4 uses polytetrafluoroethyl-ne
Alkene, sensor outer housing 7 use nonferromugnetic material.
In examples detailed above, magnetic shielding layer 6 wraps up entire sensor internal structure, and magnetic shielding layer 6 uses high magnetic permeability
Material, for shielding the interference of extraneous magnetostatic field.
In examples detailed above, the sensor device of transient electromagnetic exploration buried metal wall thickness suitable for oil gas field corrodes non-open
Detection is dug, can be used for pressure pipeline and heat distribution pipeline surface quality detection.
Claims (7)
1. a kind of sensor device for transient electromagnetic exploration, which is characterized in that including magnetic core (1), magnetic core (1) is in cylinder
Shape, magnetic core (1) are externally wrapped with receiving coil (3), are equipped with tetrafluoro cloth (2) between receiving coil (3) and magnetic core (1), receive line
It encloses (3) periphery and is close to tapered sleeve (4), tapered sleeve (4) is externally wrapped with excitation coil (5), and magnetic shielding is equipped with outside excitation coil (5)
Layer (6), magnetic shielding layer (6) is external to install sensor outer housing (7).
2. a kind of sensor device for transient electromagnetic exploration according to claim 1, which is characterized in that the cone
It covers outside (4) using the conical structure of diameter even variation from top to bottom, constant inner diameter.
3. a kind of sensor device for transient electromagnetic exploration according to claim 1, which is characterized in that described swashs
It encourages inside coil (5) using the conical structure of diameter even variation from bottom to up, is matched with tapered sleeve (4) outer diameter, external diameter constant.
4. a kind of sensor device for transient electromagnetic exploration according to claim 1, which is characterized in that described swashs
It encourages coil (5) and receiving coil (3) is respectively adopted the enameled wire coiling clockwise that diameter is 1mm and 0.25mm and forms, excitation line
Circle (5) the number of turns is 300 circles and receiving coil (3) the number of turns is 450 circles, thickness in excitation coil (5) and receiving coil (3) winding process
Spend even variation.
5. a kind of sensor device for transient electromagnetic exploration according to claim 1, which is characterized in that described swashs
It encourages and is handled between every layer of coil (5) and receiving coil (3) by gluing.
6. a kind of sensor device for transient electromagnetic exploration according to claim 1, which is characterized in that the cone
It covers (4) and uses polytetrafluoroethylene (PTFE), sensor outer housing (7) uses nonferromugnetic material.
7. a kind of sensor device for transient electromagnetic exploration according to claim 1, which is characterized in that described is quiet
Magnetic masking layer (6) wraps up entire sensor internal structure, and magnetic shielding layer (6) uses the material of high magnetic permeability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910622547.8A CN110398780A (en) | 2019-07-11 | 2019-07-11 | A kind of sensor device for transient electromagnetic exploration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910622547.8A CN110398780A (en) | 2019-07-11 | 2019-07-11 | A kind of sensor device for transient electromagnetic exploration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110398780A true CN110398780A (en) | 2019-11-01 |
Family
ID=68324561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910622547.8A Pending CN110398780A (en) | 2019-07-11 | 2019-07-11 | A kind of sensor device for transient electromagnetic exploration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110398780A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1330540A1 (en) * | 1985-09-24 | 1987-08-15 | Институт Физики Ан Азсср | Eddy-current converter for measuring electric conduction |
| CN1239778A (en) * | 1998-06-18 | 1999-12-29 | 王惠琴 | Survey technology utilizing directional emitted electromagnetic wave beam |
| JP2013137318A (en) * | 2013-02-12 | 2013-07-11 | Toshiba Corp | Eddy current flaw detection probe and eddy current flaw detection testing device using the same |
| CN106324085A (en) * | 2016-08-30 | 2017-01-11 | 中国海洋石油总公司 | Pulse eddy current testing probe |
| US9647483B1 (en) * | 2015-06-29 | 2017-05-09 | The United States Of America As Represented By The Secretary Of The Navy | Closed magnetic wireless power transfer system |
| CN106932472A (en) * | 2017-03-05 | 2017-07-07 | 北京工业大学 | A kind of two-way excitation eddy current sensor of magnetic screen type |
| CN107064291A (en) * | 2017-04-26 | 2017-08-18 | 电子科技大学 | A kind of magnetic assembles impulse eddy current Coil Detector sensor |
| CN210222270U (en) * | 2019-07-11 | 2020-03-31 | 陕西国防工业职业技术学院 | Sensor for transient electromagnetic exploration |
-
2019
- 2019-07-11 CN CN201910622547.8A patent/CN110398780A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1330540A1 (en) * | 1985-09-24 | 1987-08-15 | Институт Физики Ан Азсср | Eddy-current converter for measuring electric conduction |
| CN1239778A (en) * | 1998-06-18 | 1999-12-29 | 王惠琴 | Survey technology utilizing directional emitted electromagnetic wave beam |
| JP2013137318A (en) * | 2013-02-12 | 2013-07-11 | Toshiba Corp | Eddy current flaw detection probe and eddy current flaw detection testing device using the same |
| US9647483B1 (en) * | 2015-06-29 | 2017-05-09 | The United States Of America As Represented By The Secretary Of The Navy | Closed magnetic wireless power transfer system |
| CN106324085A (en) * | 2016-08-30 | 2017-01-11 | 中国海洋石油总公司 | Pulse eddy current testing probe |
| CN106932472A (en) * | 2017-03-05 | 2017-07-07 | 北京工业大学 | A kind of two-way excitation eddy current sensor of magnetic screen type |
| CN107064291A (en) * | 2017-04-26 | 2017-08-18 | 电子科技大学 | A kind of magnetic assembles impulse eddy current Coil Detector sensor |
| CN210222270U (en) * | 2019-07-11 | 2020-03-31 | 陕西国防工业职业技术学院 | Sensor for transient electromagnetic exploration |
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