CN204287111U - A kind of externally wearing type three-phase vortex detection probe - Google Patents
A kind of externally wearing type three-phase vortex detection probe Download PDFInfo
- Publication number
- CN204287111U CN204287111U CN201420671297.XU CN201420671297U CN204287111U CN 204287111 U CN204287111 U CN 204287111U CN 201420671297 U CN201420671297 U CN 201420671297U CN 204287111 U CN204287111 U CN 204287111U
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- magnet ring
- coil
- pedestal
- receiving coil
- detection probe
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Abstract
The utility model discloses a kind of externally wearing type three-phase vortex detection probe, comprise drive coil, receiving coil, three magnetic cores, magnet ring, pedestal and connection terminals; Described magnet ring is fixed on pedestal, and described three magnetic cores are separately positioned on the third-class office of described magnet ring, and the extended axis of the horse of three magnetic cores meets at magnet ring center and respective crossing angle is 120 °; Each magnetic core is wound with a receiving coil, each receiving coil skin is wound with a drive coil again; Described connection terminal is arranged at pedestal side, and the head and the tail two ends of each coil connect pair of terminals separately.This three-phase vortex detection probe has feature simple and reliable and flexible and convenient to use, is suitable for the conductor material of circular tube structure.
Description
Technical field
The utility model relates to a kind of electromagnetic nondestructive device, particularly relates to a kind of externally wearing type three-phase vortex detection probe.
Background technology
Along with the requirement of quality monitoring is more and more stricter, higher requirement be it is also proposed to Dynamic Non-Destruction Measurement.In industrially developed country, Non-Destructive Testing is arranged side by side with design, material, manufacture (technique), become four large gordian techniquies of industrial circle, many relevant industries such as machinery, petrochemical industry, Aeronautics and Astronautics, automobile, pressure vessel, railway, road, nuclear industry and technical field are played an important role.
When existing eddy detection technology detects many materials such as tubing, material require is through drive coil and receiving coil, material surface is axially perpendicular to the electromagnetic field that drive coil produces, and therefore the defect of material surface axis is comparatively large on the impact of excitation electromagnetic field, is easy to detect; And material surface is circumferential owing to being parallel to the electromagnetic field that drive coil produces, the circumferential defect of material surface is smaller for the impact detecting magnetic field, be difficult to by receiving coil identification, make existing eddy detection technology, because eddy current probe is insensitive to the circumferential defect of material, be easy to cause undetected, affect the quality of material and Related product, therefore, eddy current probe is badly in need of being improved.
Publication US4379261 provides a kind of probe of rotating magnetic field, but its resultant magnetic field produced only has a pair magnetic pole, and adopts single receiving coil the defect of three-phase symmetrical structure can not be detected due to it; Patent 200810057272.X, patent GB1436186 also provide a kind of probe of rotating magnetic field, but its resultant magnetic field produced only has a pair magnetic pole, and its rotating magnetic field produced is around the diametric(al) in probe space, in time carrying out defects detection, getting involved in due to measured material the space that probe surrounds can make produced rotating magnetic field produce serious distortion, and then affects Detection results.
Utility model content
For solving above-mentioned middle Problems existing and defect, the utility model provides a kind of externally wearing type three-phase vortex detection probe, can improve the reliability of metal pipe material Surface testing.
The utility model is achieved through the following technical solutions: a kind of externally wearing type three-phase vortex detection probe, comprises drive coil, receiving coil, three magnetic cores, magnet ring, pedestal and six pair of wire connection terminals; Described magnet ring is fixed on pedestal, and described three magnetic cores are separately positioned on the third-class office of described magnet ring, and the extended axis of the horse of three magnetic cores meets at magnet ring center and respective crossing angle is 120 °; Each magnetic core is wound with a receiving coil, each receiving coil skin is wound with a drive coil again; Described connection terminal is arranged at pedestal side, and the head and the tail two ends of each coil connect pair of terminals separately.
The connected connection terminal of each drive coil tail end described in the utility model connects together the common lead of extraction line for external three phase excitation source.
Pedestal described in the utility model is provided with retainer plate; Described magnet ring is placed in retainer plate internal fixtion.
The utility model by passing to appropriate frequency and the balanced three-phase current of phase place mutual deviation 120 ° respectively in three drive coils of probe, three receiving coils receive the alternating electromagnetic field that three drive coil test material are responded to respectively, when three coil position characteristics are consistent, the detection signal of three receiving coil receptions superposes and is zero, otherwise the detection signal superposition that three coils receive and non-vanishing, according to Received signal strength superposition be whether zero judge that whether properties of materials consistent, and then judge material whether existing defects.Can scan metal pipe material surface to be measured, improve the reliability of detection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the circuit connection diagram of drive coil and receiving coil in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail:
Present embodiments provide a kind of externally wearing type three-phase vortex detection probe.As shown in Figure 1, the probe that the utility model embodiment provides comprises magnetic core, drive coil, receiving coil, magnet ring 4, pedestal 5, retainer plate 7 and connection terminal 6.Magnetic core is for placing drive coil and receiving coil; Drive coil, for receiving three phase excitation electric current, produces the excitation field of three alternations in magnetic core; Receiving coil is for receiving the detection signal after rotating many magnetic pole and magnetic fields scanning object under test; Magnet ring 4, for forming magnetic circuit; Connection terminal 6, for connecting drive coil and receiving coil;
Said base arranges retainer plate, and magnet ring is placed in retainer plate internal fixtion, and magnet ring is stabilized on pedestal.The trisection place of magnet ring arranges a same core respectively, and the extended axis of the horse of three identical magnetic core 1A, 1B, 1C meets at magnet ring center and respective crossing angle is 120 °; Each magnetic core is wound with a receiving coil, each receiving coil skin is wound with a drive coil again; As magnetic core 1A being wound with a receiving coil 3A, receiving coil 3A skin is wound with a drive coil 2A again; Magnetic core 1B is wound with a receiving coil 3B, receiving coil 3B skin is wound with a drive coil 2B again; Magnetic core 1C is wound with a receiving coil 3C, receiving coil 3C skin is wound with a drive coil 2C again.Connection terminal is arranged at pedestal side, and the head and the tail two ends of each coil connect pair of terminals separately.Wherein the head end of three drive coils is drawn separately and is linked a connection terminal external three driving sources more separately, and the connection terminal that each drive coil tail end connects connects together the common lead of extraction line for external three phase excitation source.The signal that each receiving coil receives outputs to the connection terminal connected separately, then is external to detection main frame.
In addition, the drive coil on each magnetic core and receiving coil can also merge into single excitation receiving coil.
Shown in Fig. 2, for three-phase vortex probe, there are three groups of drive coil W respectively
a, W
b, W
c, with receiving coil R
a, R
b, R
c, in three drive coil groups, pass to three phase sine current i
a, i
b, i
c, described sinusoidal current can be expressed as:
i
A＝I×sin(wt)
i
B＝I×sin(wt-120°)
i
C＝I×sin(wt-240°)
The signal received by three groups of receiving coils is respectively r
a, r
b, r
c, carry out signal transacting for outputting to detection main frame.
The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (3)
1. an externally wearing type three-phase vortex detection probe, is characterized in that: comprise drive coil, receiving coil, three magnetic cores, magnet ring, pedestal and six pair of wire connection terminals; Described magnet ring is fixed on pedestal, and described three magnetic cores are separately positioned on the third-class office of described magnet ring, and the extended axis of the horse of three magnetic cores meets at magnet ring center and respective crossing angle is 120 °; Each magnetic core is wound with a receiving coil, each receiving coil skin is wound with a drive coil again; Described connection terminal is arranged at pedestal side, and the head and the tail two ends of each coil connect pair of terminals separately.
2. a kind of externally wearing type three-phase vortex detection probe according to claim 1, is characterized in that: the connected connection terminal of described each drive coil tail end connects together the common lead of extraction line for external three phase excitation source.
3. a kind of externally wearing type three-phase vortex detection probe according to claim 1, is characterized in that: described pedestal is provided with retainer plate; Described magnet ring is placed in retainer plate internal fixtion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420671297.XU CN204287111U (en) | 2014-11-11 | 2014-11-11 | A kind of externally wearing type three-phase vortex detection probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420671297.XU CN204287111U (en) | 2014-11-11 | 2014-11-11 | A kind of externally wearing type three-phase vortex detection probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204287111U true CN204287111U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420671297.XU Expired - Fee Related CN204287111U (en) | 2014-11-11 | 2014-11-11 | A kind of externally wearing type three-phase vortex detection probe |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120765A (en) * | 2017-12-28 | 2018-06-05 | 爱德森（厦门）电子有限公司 | The rotating vortex detection device and method of a kind of no coupler |
| CN110108790A (en) * | 2019-06-20 | 2019-08-09 | 中国矿业大学 | A kind of in-service Pulsed eddy current testing device and method of mining hoisting steel wire rope damage |
| CN110954593A (en) * | 2019-12-18 | 2020-04-03 | 中北大学 | Pipeline defect in-service detection device and method based on rotating magnetic field array type probe |
| CN111287733A (en) * | 2019-10-11 | 2020-06-16 | 中国石油大学(华东) | Method for detecting sucker rod of externally-penetrated rotating magnetic field well mouth |
| CN111289609A (en) * | 2019-10-11 | 2020-06-16 | 中国石油大学(华东) | External-penetrating type rotating magnetic field wellhead sucker rod detection system |
-
2014
- 2014-11-11 CN CN201420671297.XU patent/CN204287111U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108120765A (en) * | 2017-12-28 | 2018-06-05 | 爱德森（厦门）电子有限公司 | The rotating vortex detection device and method of a kind of no coupler |
| CN110108790A (en) * | 2019-06-20 | 2019-08-09 | 中国矿业大学 | A kind of in-service Pulsed eddy current testing device and method of mining hoisting steel wire rope damage |
| CN110108790B (en) * | 2019-06-20 | 2022-11-08 | 中国矿业大学 | Detection method of in-service pulse eddy current detection device for damage of mining hoisting steel wire rope |
| CN111287733A (en) * | 2019-10-11 | 2020-06-16 | 中国石油大学(华东) | Method for detecting sucker rod of externally-penetrated rotating magnetic field well mouth |
| CN111289609A (en) * | 2019-10-11 | 2020-06-16 | 中国石油大学(华东) | External-penetrating type rotating magnetic field wellhead sucker rod detection system |
| CN110954593A (en) * | 2019-12-18 | 2020-04-03 | 中北大学 | Pipeline defect in-service detection device and method based on rotating magnetic field array type probe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 510302 No. 204 Xingang West Road, Haizhu District, Guangzhou City, Guangdong Province Patentee after: China Electrical Appliance Research Institute Co., Ltd. Address before: 510302 No. 204 West Xingang Road, Guangdong, Guangzhou Patentee before: China National Electric Apparatus Research Institute Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20201111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |