CN204389438U - A kind of eddy current right angle detection probe - Google Patents
A kind of eddy current right angle detection probe Download PDFInfo
- Publication number
- CN204389438U CN204389438U CN201520034114.8U CN201520034114U CN204389438U CN 204389438 U CN204389438 U CN 204389438U CN 201520034114 U CN201520034114 U CN 201520034114U CN 204389438 U CN204389438 U CN 204389438U
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- extension tube
- detection
- probe
- eddy current
- right angle
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Abstract
The utility model relates to a kind of eddy current right angle detection probe, comprises magnetic test coil, magnetic core, probing shell, connecting line, probe socket, handle, extension tube and movable sleeve; One end of extension tube is connected with handle, and the other end of extension tube is connected with probing shell, and connecting line is in extension tube; Movable sleeve is arranged in extension tube, and movable sleeve offers locating slot; The bottom of probing shell is provided with detection plane, and the central axis of magnetic test coil is vertical with detection plane, and the central axis of extension tube is parallel with detection plane.Owing to being provided with extension tube, probe can extend into work grooves inside and detect, due to locating slot restriction, the central axis of magnetic test coil keeps vertical with work grooves inside surface, the detection degree of depth is limited in the default degree of depth, makes the eddy current that on work grooves inside surface, defect produces be regular shape, improve the accuracy of defects detection, avoid detecting the uncertain of the degree of depth and variation, reduce the Lift-off effect of probe.
Description
Technical field
The utility model relates to a kind of pick-up unit, particularly relates to a kind of eddy current right angle detection probe.
Background technology
Eddy detection technology is a kind of application Dynamic Non-Destruction Measurement more widely, is one of five large nondestructiving detecting means.In field widespread uses such as space flight, aviation, machinery, petrochemical industry, railway, nuclear industry, military projects, play an important role.Along with the requirement of quality supervision is more and more stricter, the variation of detected object and complicated, requires more and more higher to detection method and means.
EDDY CURRENT uses electromagnetic induction principle exactly, loads an alternating signal at the coil of probe, and when popping one's head in close to surface of workpiece, the alternating magnetic field that coil produces produces induction current at surface of workpiece, and we are called eddy current.The size of eddy current, phase place and liquid form are subject to the impact of surface of workpiece electric conductivity.Simultaneously eddy current also can produce a reverse magnetic field, and the magnetic field in this direction can make again the impedance of the coil of probe change conversely.Therefore, when surface of workpiece or nearly surface occur that defect or metal material change, will have influence on intensity and the distribution of eddy current, the change of eddy current causes again the coil voltage of probe and the change of impedance.According to this change, just indirectly can know whether the existence of defect in metal works and the performance of metal material change.
Existing eddy detection technology is to sheet material, and tubing, wire gage workpiece sensing is very common, but to abnormal workpieces, particularly to reeded workpiece, due to the restriction of probe size and detection angles, is difficult to convenient and accurate detection and localization.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of eddy current right angle detection probe, and this eddy current right angle detection probe can realize the detection of work grooves defect in inner surface, and the accuracy detected is higher.The technical scheme adopted is as follows:
A kind of eddy current right angle detection probe, comprise magnetic test coil, magnetic core, probing shell, connecting line, probe socket and handle, magnetic test coil and magnetic core are installed in probing shell, magnetic test coil is outside magnetic core, probe socket is arranged on the end of handle, magnetic test coil is connected with probe socket by connecting line, it is characterized in that: also comprise extension tube and movable sleeve; One end of extension tube is connected with handle, and the other end of extension tube is connected with described probing shell, and connecting line is in extension tube; Movable sleeve is arranged in extension tube, movable sleeve offers towards the locating slot of probing shell; The bottom of probing shell is provided with detection plane, and the central axis of described magnetic test coil is vertical with detection plane, and the central axis of extension tube is parallel with detection plane.
When detecting, by the position detecting depth adjustment movable sleeve, the probe be made up of is extend in work grooves, make the locating slot on movable sleeve be stuck in the edge of work grooves magnetic test coil, magnetic core, probing shell, locating slot is attached to workpiece end face, detects along workpiece end face mobile probe.Owing to being provided with extension tube, probe can extend into work grooves inside and detect, due to the locating slot restriction of movable sleeve, detection plane is attached on the inside surface of work grooves, the central axis of magnetic test coil always keeps vertical with work grooves inside surface, also the detection degree of depth is limited in the default degree of depth simultaneously, makes the eddy current that on work grooves inside surface, defect produces be regular shape, realize work grooves Inner surface test, improve the accuracy that work grooves defect in inner surface detects; Further, avoid, because causing in probe moving process detecting the uncertain of the degree of depth and variation, also can reducing the Lift-off effect of probe.Therefore, this eddy current right angle detection probe is applicable to sheet material, and tubing, particularly to the detection and localization of the inside surface of reeded abnormal workpieces.
As preferred version of the present utility model, described probing shell comprises vertical portion and transverse part, and vertical portion and transverse part link together form right angle; Described detection plane is arranged on the lower surface of vertical portion; Described magnetic test coil and magnetic core are arranged in vertical portion; Described extension tube is connected with the outer end of transverse part.Probing shell is set to rectangular shaped, the connection of more convenient probing shell and extension tube, more guarantees in moving process, detection plane is attached on the inside surface of work grooves, the central axis of magnetic test coil always keeps vertical with work grooves inside surface, improves the accuracy detected further.
As preferred version of the present utility model, described movable sleeve comprises slide and screw, and slide is provided with slip through hole and screw, and screw communicates with slip through hole, and slide is arranged in extension tube by slip through hole, and screw is in screw; Described locating slot is arranged on the front end of slide.Be slidingly connected to be set to and comprise slide and screw, simple and practical, move and locate all very convenient.
As the further preferred version of the utility model, described locating slot has stability plane and spacing plane, and stability plane parallels with described detection plane, spacing plane and detection plane perpendicular.When detecting, stability plane is attached on the inside surface of work grooves, and spacing plane is attached to the lateral surface of work grooves, during such mobile probe, the detection plane of probe keeps being attached on the inside surface of work grooves, and the central axis of magnetic test coil always keeps vertical with work grooves inside surface, reduces the Lift-off effect of probe, the stable detection degree of depth, improves the accuracy detected further.
As preferred version of the present utility model, described extension tube is shielded-plate tube.Extension tube adopts shielded-plate tube, effectively can shield undesired signal, improves the accuracy detected further.
As the further preferred version of the utility model, the outside surface of described extension tube is provided with scale.The outside surface of extension tube arranges scale, can indicate the degree of depth of detection, the detection of more convenient defect.
Compared with prior art, tool has the following advantages the utility model:
Owing to being provided with extension tube, probe can extend into work grooves inside and detect, due to the locating slot restriction of movable sleeve, the central axis of magnetic test coil always keeps vertical with work grooves inside surface, also the detection degree of depth is limited in the default degree of depth simultaneously, make the eddy current that on work grooves inside surface, defect produces be regular shape, realize work grooves Inner surface test, improve the accuracy that work grooves defect in inner surface detects; Further, avoid, because causing in probe moving process detecting the uncertain of the degree of depth and variation, also can reducing the Lift-off effect of probe.Therefore, this eddy current right angle detection probe is applicable to sheet material, and tubing, particularly to the detection and localization of the inside surface of reeded abnormal workpieces.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model preferred implementation;
Fig. 2 is using state schematic diagram of the present utility model.
Embodiment
Be described further below in conjunction with accompanying drawing and preferred implementation of the present utility model.
As shown in Figure 1, this eddy current right angle detection probe, comprise magnetic test coil 1, magnetic core 2, probing shell 3, connecting line 4, probe socket 5, handle 6, with a scale 7 shielded-plate tube 8 and movable sleeve 9, probing shell 3 comprises vertical portion 301 and transverse part 302, and vertical portion 301 and transverse part 302 link together form right angle; Magnetic test coil 1 and magnetic core 2 are arranged in vertical portion 301, and magnetic test coil 1 is outside magnetic core 2, and the lower surface of vertical portion 301 is provided with detection plane 11, and the central axis of magnetic test coil 1 is vertical with detection plane 11; Probe socket 5 is arranged on the end of handle 6; One end of shielded-plate tube 8 is connected with handle 6, and the other end of shielded-plate tube 8 is connected with the outer end of transverse part 302, and the central axis of shielded-plate tube 8 is parallel with detection plane 11; Connecting line 4 is in shielded-plate tube 8, and magnetic test coil 1 is connected with probe socket 5 by connecting line 4; Movable sleeve 9 is arranged on shielded-plate tube 8, movable sleeve 9 offers towards the locating slot 12 of probing shell 3.
Movable sleeve 9 comprises slide 901 and screw 902, and slide 901 is provided with slip through hole 903 and screw 904, and screw 904 communicates with slip through hole 903, and slide 901 is arranged on shielded-plate tube 8 by slip through hole 903, and screw 902 is in screw 904; Locating slot 12 is arranged on the front end of slide 901, and locating slot 12 has stability plane 13 and spacing plane 14, and stability plane 13 parallels with detection plane 11, and spacing plane 14 is perpendicular with detection plane 11.
As depicted in figs. 1 and 2, when detecting, by detecting the degree of depth along shielded-plate tube 8 moving sliding base 901, lock-screw 902, regulate the position of movable sleeve 9, the probe be made up of magnetic test coil 1, magnetic core 2, probing shell 3 is extend in workpiece 15 groove, make the stability plane 13 of locating slot 12 on movable sleeve 9 be attached on the inside surface of workpiece 15 groove, the spacing plane 14 of locating slot 12 is attached on the lateral surface of workpiece 15 groove, detects along workpiece 15 end face mobile probe.Owing to being provided with shielded-plate tube 8, probe can extend into workpiece 15 inside grooves and detect, due to locating slot 12 restriction of movable sleeve 9, detection plane 11 is attached on the inside surface of workpiece 15 groove, the central axis of magnetic test coil 1 always keeps vertical with workpiece 15 groove inside surface, also the detection degree of depth is limited in the default degree of depth simultaneously, the eddy current that on workpiece 15 groove inside surface, defect produces is made to be regular shape, realize workpiece 15 groove Inner surface test, improve the accuracy that workpiece 15 groove defect in inner surface detects; Further, avoid, because causing in probe moving process detecting the uncertain of the degree of depth and variation, also can reducing the Lift-off effect of probe.Therefore, this eddy current right angle detection probe is applicable to sheet material, and tubing, particularly to the detection and localization of the inside surface of reeded abnormal workpieces.
In addition; it should be noted that, the specific embodiment described in this instructions, its each several part title etc. can be different; all equivalences of doing according to structure, feature and the principle described in the utility model inventional idea or simple change, be included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (6)
1. an eddy current right angle detection probe, comprise magnetic test coil, magnetic core, probing shell, connecting line, probe socket and handle, magnetic test coil and magnetic core are installed in probing shell, magnetic test coil is outside magnetic core, probe socket is arranged on the end of handle, magnetic test coil is connected with probe socket by connecting line, it is characterized in that: also comprise extension tube and movable sleeve; One end of extension tube is connected with handle, and the other end of extension tube is connected with described probing shell, and connecting line is in extension tube; Movable sleeve is arranged in extension tube, movable sleeve offers towards the locating slot of probing shell; The bottom of probing shell is provided with detection plane, and the central axis of described magnetic test coil is vertical with detection plane, and the central axis of extension tube is parallel with detection plane.
2. eddy current right angle as claimed in claim 1 detection probe, is characterized in that: described probing shell comprises vertical portion and transverse part, and vertical portion and transverse part link together form right angle; Described detection plane is arranged on the lower surface of vertical portion; Described magnetic test coil and magnetic core are arranged in vertical portion; Described extension tube is connected with the outer end of transverse part.
3. eddy current right angle as claimed in claim 1 detection probe, it is characterized in that: described movable sleeve comprises slide and screw, slide is provided with slip through hole and screw, and screw communicates with slip through hole, slide is arranged in extension tube by slip through hole, and screw is in screw; Described locating slot is arranged on the front end of slide.
4. eddy current right angle as claimed in claim 3 detection probe, is characterized in that: described locating slot has stability plane and spacing plane, and stability plane parallels with described detection plane, spacing plane and detection plane perpendicular.
5. eddy current right angle as claimed in claim 1 detection probe, is characterized in that: described extension tube is shielded-plate tube.
6. eddy current right angle as claimed in claim 5 detection probe, is characterized in that: the outside surface of described extension tube is provided with scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520034114.8U CN204389438U (en) | 2015-01-19 | 2015-01-19 | A kind of eddy current right angle detection probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520034114.8U CN204389438U (en) | 2015-01-19 | 2015-01-19 | A kind of eddy current right angle detection probe |
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| Publication Number | Publication Date |
|---|---|
| CN204389438U true CN204389438U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520034114.8U Expired - Fee Related CN204389438U (en) | 2015-01-19 | 2015-01-19 | A kind of eddy current right angle detection probe |
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|---|---|
| CN (1) | CN204389438U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108132298A (en) * | 2018-02-02 | 2018-06-08 | 山东大学 | A kind of vertical retractable type eddy current probe and its application based on the detection of piston aditus laryngis |
| CN109342554A (en) * | 2018-11-20 | 2019-02-15 | 中国航发贵州黎阳航空动力有限公司 | The hollow components wall thickness of engine special-shaped thin wall is vortexed determination method |
| CN111505114A (en) * | 2020-05-29 | 2020-08-07 | 中国科学院合肥物质科学研究院 | Eddy current testing device and eddy current testing method |
| CN112162033A (en) * | 2020-10-27 | 2021-01-01 | 西安热工研究院有限公司 | Small-diameter pipe inner wall nondestructive inspection device and working method thereof |
-
2015
- 2015-01-19 CN CN201520034114.8U patent/CN204389438U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108132298A (en) * | 2018-02-02 | 2018-06-08 | 山东大学 | A kind of vertical retractable type eddy current probe and its application based on the detection of piston aditus laryngis |
| CN109342554A (en) * | 2018-11-20 | 2019-02-15 | 中国航发贵州黎阳航空动力有限公司 | The hollow components wall thickness of engine special-shaped thin wall is vortexed determination method |
| CN111505114A (en) * | 2020-05-29 | 2020-08-07 | 中国科学院合肥物质科学研究院 | Eddy current testing device and eddy current testing method |
| CN112162033A (en) * | 2020-10-27 | 2021-01-01 | 西安热工研究院有限公司 | Small-diameter pipe inner wall nondestructive inspection device and working method thereof |
| CN112162033B (en) * | 2020-10-27 | 2024-01-26 | 西安热工研究院有限公司 | Nondestructive inspection device for inner wall of small-diameter pipe and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20190119 |