CN107505385A - A kind of transient electromagnetic sensor and detection sensing device - Google Patents
A kind of transient electromagnetic sensor and detection sensing device Download PDFInfo
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- CN107505385A CN107505385A CN201710872269.2A CN201710872269A CN107505385A CN 107505385 A CN107505385 A CN 107505385A CN 201710872269 A CN201710872269 A CN 201710872269A CN 107505385 A CN107505385 A CN 107505385A
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- 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
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Abstract
The invention provides a kind of transient electromagnetic sensor and detection sensing device, it is related to Non-Destructive Testing sensing equipment technical field, transient electromagnetic sensor includes yoke, induction coil and magnet exciting coil, wherein, induction coil is parallel and coaxial with magnet exciting coil.Magnet exciting coil is wound in the top of yoke, and induction coil is wound in the bottom of yoke, and direction of winding is consistent, forms two-layer composite.The coil diameter of magnet exciting coil is not more than the coil diameter of induction coil.Pulsed excitation signal outside the termination access of magnet exciting coil, the termination of induction coil export inductive impulse signal to outside.The technical scheme alleviates existing for prior art the technical problem that detection range is small, accuracy of detection is poor, and the defects of realizing chemical industry gathering line detects, and optimizes the structure of sensor, adds the investigative range of sensor, improves the detection accuracy of sensor.
Description
Technical field
The present invention relates to Non-Destructive Testing sensing equipment technical field, more particularly, to a kind of transient electromagnetic sensor and detection
Sensing device.
Background technology
During basic chemical industry and oil refining plant running, the pipeline wall thickness reduction state of emphasis high corrosion risk is entered
Row monitoring is very necessary, at present, important instrument of the detection means based on transient electromagnetic principle as pipeline corrosion defect scanning
Equipment, there is the characteristics of measurement accuracy is high, cost is low, applicability is wide, simple to operate.The structure group of transient electromagnetic detection sensor
There is varied, the different line footpath of its transmitting terminal generally use into form, the transmitting terminal of different line footpaths is used for adapting to different walls
Thick, caliber, the various shapes such as elongated cylindrical, oblate cylindricality, square, ellipse are presented in it in structure.The knot of its receiving terminal
Symmetrical way double-line, isosceles triangle or matrix pattern is presented in structure respectively, to guarantee to receive enough feedback electromagnetic signals, to protect
Demonstrate,prove the accuracy of measurement data.
In process of the present invention is realized, inventor has found that at least there are the following problems in the prior art：Existing transient electrical
The detection range of magnetic measurement sensor is excessively narrow, and operating personnel need multi-pass operation to complete scanning so that and testing process is complicated,
Cause the probability increase that error introduces, and existing transient electromagnetic detection sensor is due to the pass such as equipment and its structure and line footpath
The matching of system is poor, causes the overall accuracy of detection of equipment poor, is adapted to detect the pipeline with open defect, it is difficult to defeated to collecting
Corrosive pipeline degree is detected, for the production to reality, it is difficult to realize the effect checked erroneous ideas at the outset, therefore, prior art is deposited
In the technical problem that investigative range is small, detection accuracy is poor.
The content of the invention
In view of this, it is an object of the invention to provide a kind of transient electromagnetic sensor and detection sensing device, to alleviate
The technical problem that investigative range existing for prior art is small, detection accuracy is poor.
In a first aspect, the embodiments of the invention provide a kind of transient electromagnetic sensor, including：Yoke, induction coil and encourage
Magnetic coil, induction coil are parallel and coaxial with magnet exciting coil；
Magnet exciting coil is wound in the top of yoke, and induction coil is wound in the bottom of yoke, and direction of winding is consistent, is formed double-deck
Composite construction；
The coil diameter of magnet exciting coil is not more than the coil diameter of induction coil；
Pulsed excitation signal outside the termination access of magnet exciting coil；
The termination of induction coil exports inductive impulse signal to outside.
The embodiments of the invention provide the possible embodiment of the first of first aspect, wherein, induction coil and excitation
The diameter of wire scope of coil is：0.1mm~7.0mm.
The embodiments of the invention provide the possible embodiment of second of first aspect, wherein, induction coil and excitation
The coil diameter scope of coil is：5mm~200mm.
The embodiments of the invention provide the possible embodiment of the third of first aspect, wherein, induction coil and excitation
The number of turns scope of coil is：1~2000.
The embodiments of the invention provide the possible embodiment of the 4th of first aspect kind, wherein, induction coil and excitation
Coil is copper cash.
Second aspect, the embodiments of the invention provide a kind of transient electromagnetic to detect sensing device, including：Mounting bracket, displacement
Sensor, communicator, get marker and above-mentioned transient electromagnetic sensor ready；
One or more transient electromagnetic sensors are equipped with mounting bracket, transient electromagnetic sensor is distributed in mounting bracket in arc-shaped
Medial surface, and be connected with the marker of getting ready, displacement transducer and get the medial surface that marker is arranged on mounting bracket ready,
Respectively with transient electromagnetic sensor, displacement transducer, get the lateral surface that the communicator that marker is connected is arranged at mounting bracket ready；
Pulsed excitation signal outside the access of transient electromagnetic sensor, exports inductive impulse signal；
Displacement transducer generates displacement data according to motion track；
Communicator sends inductive impulse signal and displacement data；
Get marker ready and mark is got ready according to inductive impulse signal enabling.
The embodiments of the invention provide the possible embodiment of the first of second aspect, wherein, the lateral surface of mounting bracket
It is additionally provided with handle.
The embodiment of the present invention brings following beneficial effect：The transient electromagnetic sensor and inspection that the embodiment of the present invention is provided
Sensing device is surveyed, wherein, transient electromagnetic sensor includes：Yoke, induction coil and magnet exciting coil, wherein, induction coil and encourage
Magnetic coil is parallel and coaxial.Magnet exciting coil is wound in the top of yoke, and induction coil is wound in the bottom of yoke, and direction of winding
Unanimously, two-layer composite is formed.The coil diameter of magnet exciting coil is not more than the coil diameter of induction coil.The end of magnet exciting coil
Pulsed excitation signal outside head access, the termination of induction coil export inductive impulse signal to outside.The technical scheme passes through
The double-layer combined structure formed using induction coil and magnet exciting coil, the defects of realizing chemical industry gathering line, are detected, and are optimized
The structure of sensor, adds the investigative range of sensor, improves the detection accuracy of sensor, and then realizes detection stream
The simplification of journey, the operation difficulty of detection is reduced, detection range is small, accuracy of detection is poor so as to alleviate existing for prior art
Technical problem.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of transient electromagnetic sensor provided in an embodiment of the present invention；
Fig. 2 is the structural representation that a kind of transient electromagnetic provided in an embodiment of the present invention detects sensing device.
Icon：
100- transient electromagnetic sensors；110- yokes；120- induction coils；130- magnet exciting coils；200- mounting brackets；300- displacements
Sensor；400- communicators；500- gets marker ready；600- handles.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment is part of the embodiment of the present invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
At present, the detection range of existing transient electromagnetic detection sensor is excessively narrow, and operating personnel need multi-pass operation
Complete scanning so that testing process is complicated, the probability increase for causing error to introduce, and existing transient electromagnetic detection sensor by
It is poor in the matching of the relations such as equipment and its structure and line footpath, cause the overall accuracy of detection of equipment poor, be adapted to detect tool
There is the pipeline of open defect, it is difficult to gathering line extent of corrosion is detected, based on this, one kind provided in an embodiment of the present invention
Transient electromagnetic sensor and detection sensing device, can increase the investigative range of sensor, improve the detection accuracy of sensor, enter
And realize the simplification of detection flow.
Embodiment one：
Referring to Fig. 1, a kind of structural representation for transient electromagnetic sensor that the embodiment of the present invention is provided.The embodiment of the present invention carries
The transient electromagnetic sensor 100 of confession, including：Yoke 110, induction coil 120 and magnet exciting coil 130, induction coil 120 and excitation
Coil 130 is parallel and coaxial.
Yoke 110 is coaxial with induction coil 120 and magnet exciting coil 130 respectively, and magnet exciting coil 130 is wound in yoke 110
Top, induction coil 120 is wound in the bottom of yoke 110, and induction coil 120 is consistent with the direction of winding of magnet exciting coil 130,
Induction coil 120 and magnet exciting coil 130 form two-layer composite, and the coil diameter of magnet exciting coil 130 is not more than the line of induction
The coil diameter of circle 120.The technical scheme realizes excitation pulse using the magnet exciting coil of two-layer composite with induction coil
The concentration of signal sends a wide range of reception with inductive impulse signal, and the wall thickness range for realizing defect of pipeline scanning increases to
20mm, the Detection accuracy of defect etching can adjust bilayer up to more than 90%, and for different-diameter and the gathering line of wall thickness
The parameter of combined type coil, optimize its structure, to improve its detection accuracy, increase its investigative range, and then reduce repeatedly measurement
Error introduce, while simplify its and detect flow, reduce its operation difficulty, improve detection efficient.
Pulsed excitation signal outside the termination access of magnet exciting coil 130.The termination of magnet exciting coil and outside current source
It is connected, receives the power supply excitation that current source is sent, magnet exciting coil sends pulsed excitation signal with certain frequency, the signal moment
Duct wall is penetrated, difference is produced according to the difference of tubing wall thickness by the feedback signal of duct wall, specifically, induction coil
120 termination exports inductive impulse signal to outside.Inductive impulse signal is the feedback letter that pulsed excitation signal passes through duct wall
Number, the induction coil of sensor should be pressed close to as the receiving terminal of feedback signal with duct wall, to ensure the coverage rate of signal reception
The intensity of product and reception signal.
In transient electromagnetic sensor provided in an embodiment of the present invention, the diameter of wire scope of induction coil and magnet exciting coil is equal
For：0.1mm~7.0mm.Preferably, the diameter of wire of induction coil and magnet exciting coil can be 0.15mm, 0.20mm, 0.55mm
Or 0.9mm.
In transient electromagnetic sensor provided in an embodiment of the present invention, the coil diameter scope of induction coil and magnet exciting coil is equal
For：5mm~200mm.Preferably, the coil diameter of induction coil can be 25mm, 30mm, 40mm, 50mm.The line of magnet exciting coil
Loop diameter can be 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, and the coil diameter of magnet exciting coil is not more than induction coil
Coil diameter.
In transient electromagnetic sensor provided in an embodiment of the present invention, the number of turns scope of induction coil and magnet exciting coil
For：1~2000.
In transient electromagnetic sensor provided in an embodiment of the present invention, induction coil and magnet exciting coil are copper cash, and copper cash is made
There is the advantages of conductive capability is strong for cell winding, further, the present embodiment in force, above-mentioned induction coil and excitation
Coil can have multiple choices mode, such as：Aluminum conductor, copper alloy wire or aluminium alloy conductor.
The transient electromagnetic sensor that the embodiment of the present invention is provided, including：Yoke, induction coil and magnet exciting coil, wherein,
Induction coil is parallel and coaxial with magnet exciting coil.Magnet exciting coil is wound in the top of yoke, and induction coil is wound under yoke
Portion, and direction of winding is consistent, forms two-layer composite.The coil diameter of magnet exciting coil is straight no more than the coil of induction coil
Footpath.Pulsed excitation signal outside the termination access of magnet exciting coil, the termination of induction coil export inductive impulse signal to outside.
The double-layer combined structure that the technical scheme is formed by using induction coil and magnet exciting coil, realizes chemical industry gathering line
Defect detection, the structure of sensor is optimized, add the investigative range of sensor, improved the detection accuracy of sensor, enter
And the simplification of detection flow is realized, the operation difficulty of detection is reduced, so as to alleviate detection range existing for prior art
Technical problem small, accuracy of detection is poor.
Embodiment two：
Referring to Fig. 2, a kind of structural representation of transient electromagnetic detection sensing device provided in an embodiment of the present invention.The present invention is implemented
The transient electromagnetic detection sensing device that example provides, including：Mounting bracket 200, displacement transducer 300, communicator 400, get mark ready
Device 500 and above-mentioned transient electromagnetic sensor 100.
Transient electromagnetic sensor 100 provided in an embodiment of the present invention, the transient electromagnetic sensor provided with above-described embodiment
100 have identical technical characteristic, so can also solve identical technical problem, reach identical technique effect.
Specifically, one or more transient electromagnetic sensors 100, transient electromagnetic sensor are equipped with mounting bracket 200
100th, displacement transducer 300 and get the number of marker 500 ready and can be extended according to the scope diameter of pipeline, according to use
Need to select 1 to 20 transient electromagnetic sensors.Transient electromagnetic sensor is in the medial surface that arc-shaped is distributed in mounting bracket, and with
The marker of getting ready is connected, and displacement transducer 300 and gets the medial surface that marker 500 is arranged on mounting bracket 200 ready, respectively
With transient electromagnetic sensor 100, displacement transducer 300, get the communicator 400 that marker 500 is connected ready and be arranged at mounting bracket
200 lateral surface.
Transient electromagnetic sensor 100 accesses the pulsed excitation signal of outside, exports inductive impulse signal.Transient electromagnetic is passed
The outside that sensor is placed in reference block carries out wall thickness detection to it, records the inductive impulse signal of the reference block as benchmark,
Reference block has multiple standard sizes.For corrosive pipeline or defect damage be present, obtained sensing arteries and veins is fed back
Rush between signal and the inductive impulse signal of reference block and have differences, and difference degree and corrosion damage degree be into positive correlation,
Embody the corrosion default situation of pipeline.The technical scheme realizes the measurement to tube performance parameter, nothing using electromagnetic principle
The heat-insulation layer of pipeline external need to be dismantled, reduces substantial amounts of drain on manpower and material resources, and the safety for avoiding disassembling section from bringing is hidden
Suffer from.
Displacement transducer 300 generates displacement data according to motion track.Specifically, testing staff holds transient electromagnetic detection
Sensing device axially moves along pipeline, and displacement transducer 300 records the motion track of transient electromagnetic detection sensing device, meter
Calculation obtains mobile route and coordinate, generates corresponding displacement data.
Communicator 400 sends inductive impulse signal and displacement data.Specifically, communicator and outside transient electromagnetic main frame
It is connected, inductive impulse signal and displacement data are sent to transient electromagnetic main frame, communicator and also send inductive impulse by communicator
Signal is to getting marker ready, because pulsed excitation signal with inductive impulse signal generates difference, it is necessary to right after duct wall
The position that wall thickness data have differences is marked, subsequently to carry out the Accurate Analysis for corrosion default.Get marker ready
Mark is got ready according to inductive impulse signal enabling, marker is got ready and receives the inductive impulse signal that communicator is sent, and according to logical
Interrogate the inductive impulse signal that device is sent and complete relative different calculating, the value that difference is calculated exceedes the opposite position of threshold value
Carry out getting mark ready.
Further, in transient electromagnetic detection sensing device provided in an embodiment of the present invention, the lateral surface of mounting bracket is also set
It is equipped with handle 600.Testing staff holds the handle, and transient electromagnetic is detected into sensing device along pipeline axial translation, in real time detection
The corrosion condition of pipeline.
The transient electromagnetic detection sensing device that the embodiment of the present invention is provided, including：Mounting bracket, displacement transducer, communication
Device, get marker and transient electromagnetic sensor ready.Wherein, transient electromagnetic sensor includes yoke, induction coil and magnet exciting coil,
Induction coil is parallel and coaxial with magnet exciting coil.Magnet exciting coil is wound in the top of yoke, and induction coil is wound under yoke
Portion, and direction of winding is consistent, forms two-layer composite.The coil diameter of magnet exciting coil is straight no more than the coil of induction coil
Footpath.Pulsed excitation signal outside the termination access of magnet exciting coil, the termination of induction coil export inductive impulse signal to outside.
Pulsed excitation signal outside the access of transient electromagnetic sensor, exports inductive impulse signal.Displacement transducer is according to motion track
Displacement data is generated, communicator sends inductive impulse signal and displacement data, gets marker ready according to inductive impulse signal enabling
Get mark ready.The two-layer compound that transient electromagnetic sensor in the technical scheme is formed by using induction coil and magnet exciting coil
Formula structure, the investigative range of sensor is added, improve the detection accuracy of sensor, and then realize the letter of detection flow
Change, reduce the operation difficulty of detection, meanwhile, displacement transducer, the cooperation realization for getting marker and transient electromagnetic sensor ready
The corrosion default scanning of chemical industry gathering line and mark, alleviate that existing transient electromagnetic detection sensing device is existing to be detected
The technical problem that scope is small, accuracy of detection is poor.
In the description of the embodiment of the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " company
Connect " it should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or it is integrally connected；It can be machine
Tool connects or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can be two members
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
Finally it should be noted that：Embodiment described above, it is only the embodiment of the present invention, to illustrate the present invention
Technical scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those within the art that：Any one skilled in the art
The invention discloses technical scope in, it can still modify to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent substitution is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of technical scheme of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (7)
1. a kind of transient electromagnetic sensor, including：Yoke, induction coil and magnet exciting coil, it is characterised in that the induction coil
It is parallel and coaxial with the magnet exciting coil；
The magnet exciting coil is wound in the top of the yoke, and the induction coil is wound in the bottom of the yoke, and coiling
Direction is consistent, forms two-layer composite；
The coil diameter of the magnet exciting coil is not more than the coil diameter of the induction coil；
Pulsed excitation signal outside the termination access of the magnet exciting coil；
The termination of the induction coil exports inductive impulse signal to outside.
2. transient electromagnetic sensor according to claim 1, it is characterised in that the induction coil and the magnet exciting coil
Diameter of wire scope be：0.1mm~7.0mm.
3. transient electromagnetic sensor according to claim 1, it is characterised in that the induction coil and the magnet exciting coil
Coil diameter scope be：5mm~200mm.
4. transient electromagnetic sensor according to claim 1, it is characterised in that the induction coil and the magnet exciting coil
Number of turns scope be：1~2000.
5. transient electromagnetic sensor according to claim 1, it is characterised in that the induction coil and the magnet exciting coil
It is copper cash.
6. a kind of transient electromagnetic detects sensing device, it is characterised in that including：Mounting bracket, displacement transducer, communicator, get ready
Marker and the transient electromagnetic sensor as any one of claim 1 to 5；
One or more transient electromagnetic sensors are equipped with the mounting bracket, the transient electromagnetic sensor is in arc-shaped
The medial surface of mounting bracket is distributed in, and is connected with the marker of getting ready, institute's displacement sensors and described gets marker ready
Be arranged on the medial surface of the mounting bracket, respectively with the transient electromagnetic sensor, displacement transducer, get marker ready and be connected
The communicator be arranged at the lateral surface of the mounting bracket；
Pulsed excitation signal outside the transient electromagnetic sensor access, exports inductive impulse signal；
Institute's displacement sensors generate the displacement data according to motion track；
The communicator sends the inductive impulse signal and the displacement data；
The marker of getting ready gets mark ready according to the inductive impulse signal enabling.
7. transient electromagnetic according to claim 6 detects sensing device, it is characterised in that the lateral surface of the mounting bracket is also
It is provided with handle.
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| CN201710872269.2A CN107505385A (en) | 2017-09-25 | 2017-09-25 | A kind of transient electromagnetic sensor and detection sensing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109164166A (en) * | 2018-08-20 | 2019-01-08 | 河北省特种设备监督检验研究院 | A kind of novel panel weld Magnetic testing device |
| CN110095526A (en) * | 2019-06-06 | 2019-08-06 | 天津特米斯科技有限公司 | A kind of transient electromagnetic method probe apparatus |
| CN110146591A (en) * | 2019-06-06 | 2019-08-20 | 天津特米斯科技有限公司 | A transient electromagnetic pipeline defect scanning device with magnetic field focusing |
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Effective date of registration: 20201217 Address after: Room 502, 5 / F, No.71, Yueyang Road, Heping District, Tianjin Applicant after: TIANJIN YINKE XINCHUANG TECHNOLOGY Co.,Ltd. Address before: Room 315A, Block A, Tianjin Youth Pioneering Park, 85 Xiaoxiguan Youth Road, Lingdongge Street, Hongqiao District, Tianjin Applicant before: TIANJIN TEMISI TECHNOLOGY Co.,Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171222 |