CN101126623A - Magnetostrictive sensor for steel stranded wire supersonic guided wave detection - Google Patents
Magnetostrictive sensor for steel stranded wire supersonic guided wave detection Download PDFInfo
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- CN101126623A CN101126623A CNA2007101193196A CN200710119319A CN101126623A CN 101126623 A CN101126623 A CN 101126623A CN A2007101193196 A CNA2007101193196 A CN A2007101193196A CN 200710119319 A CN200710119319 A CN 200710119319A CN 101126623 A CN101126623 A CN 101126623A
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Abstract
The utility model discloses a magneto-stretch sensor used for detection of ultrasound ultrasonic waveform, which belongs to the technical field of acoustic sensors. Bias magnetic circuit which is provided with a plurality of steel stranded wires (1), a jaw (2), a saddle (3), a permanent magnet (4) and a yoke iron (5) makes the magnetic field generated in the steel stranded wires (1) to rotate with the field biased along the direction of the magnetic field. The excitation signal issued by signal generator enter the first enameled wire (7) after being enlarged in a power amplifier. An alternating current magnetic field is produced by the stranded wires in an incentive-in solenoid sensor (6), the coordination of the bias magnetic field and the alternating magnetic field caused by the magnetic domain in the stranded wires are swung back and forth along the axial direction of the magnetic domain, and the change of the magnetic domain is received to the receiving end of the solenoid sensor. The signal is received to the oscilloscopes by a second enameled wire (8), and the waveforms of the signal are displayed by the oscilloscope. The utility model has the advantages that the utility model has low price, ultrasound guided wave can be detected without grinding end face of the stranded wires, and repeatability and operability of detection are improved effectively.
Description
Technical field
The present invention relates to a kind of magneto strictive sensor that steel stranded wire supersonic guided wave detects that is used for, belong to the acoustic sensor technical field, its effect is that the electromagnetic energy that sensor produces is converted to mechanical energy (acoustic energy) by steel strand wires, and comes prestress size, defective to steel strand wires to have or not etc. by the analysis to mechanical energy (acoustic energy) and detect.
Background technology
Now, the sensor that detects such as have or not mostly to be the piezoelectricity sheet type sensor for prestress size, the defective of steel strand wires.This kind sensor needs to polish the end face of steel strand wires quite smooth, smooth in use, and must use special anchor clamps that piezoelectric patches is fixed on end face after the polishing tightly.So brought a lot of inconvenience to actual detected, simultaneously because after each polishing, the verticality of end face and axis can't guarantee to be certain value, so detection is repeated relatively poor.
Summary of the invention
The object of the present invention is to provide a kind of magneto strictive sensor that steel stranded wire supersonic guided wave detects that is used for, it not only can be used for the linear measure longimetry of steel strand wires, can also be used for detection to peripheral defective of steel strand wires and prestress size, has the signal to noise ratio (S/N ratio) height, volume is little, characteristics such as propagation distance is far away, and good reproducibility can satisfy requirement of experiment preferably.
To achieve these goals, the present invention has taked following technical scheme.Mainly include excitation end sensor and receiving end sensor.The excitation end sensor mainly includes saddle sheet 3, permanent magnet 4, yoke 5 and is enclosed within intermediate plate 2, the solenoid 6 of steel strand wires 1 outside surface, solenoid 6 is provided with step in appearance, part between per two steps all is surrounded with first enameled wire 7, whenever, just change once around direction through a step first enameled wire 7, the two ends of first enameled wire 7 link to each other with signal generator; The two ends of solenoid 6 are provided with intermediate plate 2, outside surface at intermediate plate 2 is with saddle sheet 3, the outside surface of saddle sheet 3 along the circumferential direction evenly is fixed with three permanent magnets 4, and yoke 5 is connected with the outer face that is positioned at two block permanent magnets 4 solenoid 6 two ends, on steel strand wires 1 same axis direction; The receiving end sensor is identical with excitation end sensor structure, and with excitation end sensor axially being arranged in juxtaposition along steel strand wires 1.
Described saddle sheet 3 is made up of the rectangular parallelepiped that three bottoms have 120 degree arc grooves, and arc radius is identical with the radius of steel strand wires 1.
The number of the step on described solenoid 6 outside surfaces is 4～6.
The diameter of first enameled wire 7 of described excitation end sensor is 0.2～0.4mm.
The diameter of second enameled wire 8 of described receiving end sensor is 0.1～0.2mm.
Among the present invention, steel strand wires 1, intermediate plate 2, saddle sheet 3, permanent magnet 4 and yoke 5 have been formed a biasing magnetic circuit.The magnetic domain of steel strand wires 1 inside will deflect to a comparatively unified offset position along magnetic direction in the magnetic circuit.Then, after the signal that signal generator sends is amplified by power amplifier, enter enameled wire 7 through the output terminal of power amplifier.Afterwards, just can in the excitation end sensor, produce an alternating magnetic field on the steel strand wires in the solenoid 6, it is the center with the offset position that this alternating magnetic field can make magnetic domain, swings back and forth with the variation of alternating magnetic field, causes steel strand wires to produce vertically elongation and shortening on the macroscopic view.Wherein, alternating magnetic field can be regarded an alterante stress as, and this alterante stress can cause that the magnetic domain in the receiving end sensor changes, and the solenoid 6 that the variation of magnetic domain can be received in the end sensor receives.And received signal is imported oscillographic input end into by enameled wire 8, and shows the waveform that receives by oscillograph.The waveform that receives by analysis comes prestress size, the defective to steel strand wires to have or not etc. to detect.
Description of drawings
Fig. 1 is an integral installation synoptic diagram of the present invention;
Fig. 2 is the structural representation of intermediate plate 2 of the present invention;
Fig. 3 is the structural representation of saddle sheet 3 of the present invention;
Fig. 4 is the structural representation of permanent magnet 4 of the present invention;
Fig. 5 is the structural representation of yoke 5 of the present invention;
Fig. 6 is the structural representation of solenoid 6 of the present invention.
Among the figure: 1, steel strand wires, 2, intermediate plate, 3, the saddle sheet, 4, permanent magnet, 5, yoke, 6, solenoid, 7, enameled wire.
Embodiment
Be described in further detail below in conjunction with Fig. 1～6 pair present embodiment.
The technical scheme of the magnetostriction ultrasonic guided wave detecting sensor that present embodiment provides mainly comprises excitation end sensor and receiving end sensor two big technical schemes.Wherein encourage the structure of end sensor such as Fig. 1～shown in Figure 6, comprise intermediate plate 2, saddle sheet 3, permanent magnet 4, yoke 5 and solenoid 6, saddle sheet 3 is made up of the rectangular parallelepiped that three bottoms have 120 degree arc grooves, and arc radius is identical with the radius of steel strand wires 1, as shown in Figure 3.Solenoid 6 outside surfaces are provided with 4 steps, as shown in Figure 6.
To detect 7 core steel strand wires is example, solenoid 6 tightly is enclosed within on the steel strand wires 1 by central through hole 602,10 thin slices are stacked composition intermediate plate 2, be installed on the steel strand wires 1 by interior arch face 201, and the upper surface 202 of intermediate plate 2 tightly is attached on the left side 601 of solenoid 6.With diameter is that the groove 603 that passes on the step 604 of solenoid 6 of an end of 0.2 millimeter enameled wire 7 is deasil close on outside surface 605; When around when the step 606, again enameled wire 7 is passed groove 607 on the step 606 widdershins on outside surface 608; When around the time to step 609, again enameled wire 7 is passed groove 610 on the step 609 deasil on outside surface 611, enameled wire 7 is passed the groove 613 on the step 612, the length of the enameled wire of leaving and taking beyond the groove 603 and 613 7 only need guarantee that the output terminal of enough access power amplifiers gets final product again.3 saddle sheets 3 are distributed on the thickness face 203 of intermediate plate 2 by arch face 302.
The front end face 402 of left side 601, permanent magnet 4 of end face 303 and solenoid 6 of saddle sheet 3 that is positioned at solenoid 6 left ends is at same perpendicular, the front end face 404 of the right side of saddle sheet 3 and permanent magnet 4 and the front end face 301 of saddle sheet 3 are in same perpendicular, and the lower surface 302 of saddle sheet contacts with the lateral surface 203 of intermediate plate.Permanent magnet 4 is adsorbed on the upper surface 304 of saddle sheet 3 tightly by lower surface 403.All the other array intermediate plates 2, saddle sheet 3 also are installed in the right-hand member of solenoid 6 according to the method described above, and wherein, the right side 614 of solenoid 6 contacts with the front surface 202 of intermediate plate 2.Yoke 5 is attached together with the upper surface 401 of the permanent magnet 4 of the upper surface 401 of the permanent magnet 4 at solenoid 6 both ends and afterbody respectively tightly by lower surface 502, wherein, the front end face 404 of the left side 501 of yoke 5 and the permanent magnet 4 of solenoid 6 left ends is in same perpendicular, and the rear end face 40 of the right side 503 of yoke 5 and the permanent magnet 4 of solenoid 6 right-hand members is in same perpendicular.
The technical scheme of receiving end sensor is identical with the excitation end sensor, and just having selected diameter for use is that 0.12 millimeter enameled wire 8 is as the lead of receiving end.
Use principle is as follows:
In the present embodiment, steel strand wires 1, intermediate plate 2, saddle sheet 3, permanent magnet 4 and yoke 5 have been formed a biasing magnetic circuit.The magnetic domain of steel strand wires 1 inside will deflect to a comparatively unified offset position along magnetic direction in the magnetic circuit.Then, after the signal that signal generator sends is amplified by power amplifier, enter enameled wire 7 through the output terminal of power amplifier.Afterwards, just can in the excitation end sensor, produce an alternating magnetic field on the steel strand wires in the solenoid 6, it is the center with the offset position that this alternating magnetic field can make magnetic domain, swings back and forth with the variation of alternating magnetic field, causes steel strand wires to produce vertically elongation and shortening on the macroscopic view.Wherein, alternating magnetic field can be regarded an alterante stress as, and this alterante stress can cause that the magnetic domain in the receiving end sensor changes, and the solenoid 6 that the variation of magnetic domain can be received in the end sensor receives.And received signal is imported oscillographic input end into by enameled wire 8, and shows the waveform that receives by oscillograph.The waveform that receives by analysis comes prestress size, the defective to steel strand wires to have or not etc. to detect.
Present embodiment is not only with low cost, more makes the repeatability of detection and operability obtain effective lifting, simultaneously because it has adopted the correlation theory of guided wave, makes sensor obtain effective lifting in the ability that detects on the steel strand wires length.
Claims (5)
1. one kind is used for the magneto strictive sensor that steel stranded wire supersonic guided wave detects, it is characterized in that: mainly include excitation end sensor and receiving end sensor, the excitation end sensor mainly includes saddle sheet (3), permanent magnet (4), yoke (5) and be enclosed within the intermediate plate (2) of steel strand wires (1) outside surface, solenoid (6), apparent two ends of solenoid (6) and center section are provided with step, part between per two steps all is surrounded with first enameled wire (7), whenever, just change once around direction through step first enameled wire (7), the two ends of first enameled wire (7) link to each other with signal generator; The two ends of solenoid (6) are provided with intermediate plate (2), outside surface at intermediate plate (2) is with saddle sheet (3), the outside surface of saddle sheet (3) along the circumferential direction evenly is fixed with three permanent magnets (4), and yoke (5) is connected with the outer face that is positioned at two block permanent magnets (4) solenoid (6) two ends, on the same axis direction of steel strand wires (1); The receiving end sensor is identical with excitation end sensor structure, and with excitation end sensor axially being arranged in juxtaposition along steel strand wires (1).
2. a kind of magneto strictive sensor that steel stranded wire supersonic guided wave detects that is used for according to claim 1, it is characterized in that: described saddle sheet (3) is made up of the rectangular parallelepiped that three bottoms have 120 degree arc grooves, and arc radius is identical with the radius of steel strand wires (1).
3. a kind of magneto strictive sensor that steel stranded wire supersonic guided wave detects that is used for according to claim 1, it is characterized in that: the number of the step on described solenoid (6) outside surface is 4～6.
4. according to claim 1 or the described a kind of magneto strictive sensor that steel stranded wire supersonic guided wave detects that is used for of claim 2, it is characterized in that: the diameter of first enameled wire (7) of described excitation end sensor is 0.2～0.4mm.
5. according to claim 1 or the described a kind of magneto strictive sensor that steel stranded wire supersonic guided wave detects that is used for of claim 2, it is characterized in that: the diameter of the enameled wire of described receiving end sensor is 0.1～0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101193196A CN100516767C (en) | 2007-07-20 | 2007-07-20 | Magnetostrictive sensor for steel stranded wire supersonic guided wave detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101193196A CN100516767C (en) | 2007-07-20 | 2007-07-20 | Magnetostrictive sensor for steel stranded wire supersonic guided wave detection |
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| CN101126623A true CN101126623A (en) | 2008-02-20 |
| CN100516767C CN100516767C (en) | 2009-07-22 |
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| CNB2007101193196A Expired - Fee Related CN100516767C (en) | 2007-07-20 | 2007-07-20 | Magnetostrictive sensor for steel stranded wire supersonic guided wave detection |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101551254B (en) * | 2009-05-08 | 2010-08-18 | 北京工业大学 | High-performance magnetostrictive transducer of using multi-layer winding coil |
| CN102230913A (en) * | 2011-06-25 | 2011-11-02 | 河南电力试验研究院 | Electromagnetic acoustic transducer for detecting condenser stainless steel bellows |
| CN102435357A (en) * | 2011-10-09 | 2012-05-02 | 北京工业大学 | Flexible magnetostriction and magnetoelastic integrated sensor for detecting stress and defect of wire rope |
| CN102967658A (en) * | 2012-12-07 | 2013-03-13 | 钢铁研究总院 | Electromagnetic ultrasonic energy converter for automatic detection of surface of steel rod |
| CN104634873A (en) * | 2015-01-28 | 2015-05-20 | 同济大学 | Ultrasonic detection system and method for damage of steel wires in bridge-cable anchoring area |
| CN105115652A (en) * | 2015-07-09 | 2015-12-02 | 西北工业大学 | Method for quantified monitoring bolt pre-tightening torque through active ultrasonic guided wave |
| CN105518425A (en) * | 2013-09-06 | 2016-04-20 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method for operating magnetostrictive sensor |
| CN108760117A (en) * | 2018-03-09 | 2018-11-06 | 南京航空航天大学 | The method that electromagnetic acoustic based on magnetostrictive effect measures plate stress |
| CN109459491A (en) * | 2019-01-15 | 2019-03-12 | 南昌航空大学 | A kind of pipeline magnetizing assembly for magnetic striction wave guide detection |
| CN110243271A (en) * | 2019-07-10 | 2019-09-17 | 郑州微思迪服饰有限公司 | A kind of dimension measuring device of garment production |
| CN111103348A (en) * | 2020-01-07 | 2020-05-05 | 长沙理工大学 | Bridge suspender breakage and broken wire detection device based on magnetic telescopic method |
| CN111327009A (en) * | 2020-02-27 | 2020-06-23 | 南京工程学院 | Intelligent rotary deicing robot based on multi-rotor aircraft and deicing method thereof |
| CN112444219A (en) * | 2020-12-31 | 2021-03-05 | 爱德森（厦门）电子有限公司 | Non-contact ultrasonic electromagnetic coating thickness measuring method and detection device thereof |
| CN113152273A (en) * | 2021-04-28 | 2021-07-23 | 重庆交通大学 | Detection device and detection method for boom diseases |
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| CN101832974B (en) * | 2010-05-28 | 2011-11-09 | 北京工业大学 | Monomer magnetostrictive sensor used for steel strand detection on basis of pitch and catch technique |
-
2007
- 2007-07-20 CN CNB2007101193196A patent/CN100516767C/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551254B (en) * | 2009-05-08 | 2010-08-18 | 北京工业大学 | High-performance magnetostrictive transducer of using multi-layer winding coil |
| CN102230913A (en) * | 2011-06-25 | 2011-11-02 | 河南电力试验研究院 | Electromagnetic acoustic transducer for detecting condenser stainless steel bellows |
| CN102435357A (en) * | 2011-10-09 | 2012-05-02 | 北京工业大学 | Flexible magnetostriction and magnetoelastic integrated sensor for detecting stress and defect of wire rope |
| CN102967658A (en) * | 2012-12-07 | 2013-03-13 | 钢铁研究总院 | Electromagnetic ultrasonic energy converter for automatic detection of surface of steel rod |
| CN102967658B (en) * | 2012-12-07 | 2015-08-26 | 钢铁研究总院 | A kind of electromagnet ultrasonic changer for rod iron surface Aulomatizeted Detect |
| CN105518425A (en) * | 2013-09-06 | 2016-04-20 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method for operating magnetostrictive sensor |
| CN105518425B (en) * | 2013-09-06 | 2018-06-29 | 大陆-特韦斯贸易合伙股份公司及两合公司 | For running the method for magneto strictive sensor |
| CN104634873A (en) * | 2015-01-28 | 2015-05-20 | 同济大学 | Ultrasonic detection system and method for damage of steel wires in bridge-cable anchoring area |
| CN105115652A (en) * | 2015-07-09 | 2015-12-02 | 西北工业大学 | Method for quantified monitoring bolt pre-tightening torque through active ultrasonic guided wave |
| CN108760117A (en) * | 2018-03-09 | 2018-11-06 | 南京航空航天大学 | The method that electromagnetic acoustic based on magnetostrictive effect measures plate stress |
| CN109459491A (en) * | 2019-01-15 | 2019-03-12 | 南昌航空大学 | A kind of pipeline magnetizing assembly for magnetic striction wave guide detection |
| CN110243271A (en) * | 2019-07-10 | 2019-09-17 | 郑州微思迪服饰有限公司 | A kind of dimension measuring device of garment production |
| CN111103348A (en) * | 2020-01-07 | 2020-05-05 | 长沙理工大学 | Bridge suspender breakage and broken wire detection device based on magnetic telescopic method |
| CN111327009A (en) * | 2020-02-27 | 2020-06-23 | 南京工程学院 | Intelligent rotary deicing robot based on multi-rotor aircraft and deicing method thereof |
| CN112444219A (en) * | 2020-12-31 | 2021-03-05 | 爱德森（厦门）电子有限公司 | Non-contact ultrasonic electromagnetic coating thickness measuring method and detection device thereof |
| CN113152273A (en) * | 2021-04-28 | 2021-07-23 | 重庆交通大学 | Detection device and detection method for boom diseases |
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Granted publication date: 20090722 Termination date: 20190720 |