CN103698389A - Design method for enabling detected part to run along externally-penetrated probe central axis all time - Google Patents
Design method for enabling detected part to run along externally-penetrated probe central axis all time Download PDFInfo
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- CN103698389A CN103698389A CN201410016562.5A CN201410016562A CN103698389A CN 103698389 A CN103698389 A CN 103698389A CN 201410016562 A CN201410016562 A CN 201410016562A CN 103698389 A CN103698389 A CN 103698389A
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Abstract
The invention discloses a design method for enabling a detected part to run along an externally-penetrated probe central axis all the time. According to the design method, a layer of liquid bags are additionally arranged between a coil winding frame and a shell in the externally-penetrated probe; a centering clamp is fixed at each of two ends of the coil winding frame; since the liquid bags are deformed when being stressed and are restored to the original state when not being stressed, detected metal tubes, bars and wires also can run along the central axis in a central through hole of the coil winding frame of the externally-penetrated probe even if one parts of the detected metal tubes, bars and wires are bent and deformed, so that the problem that detected workpieces are operated by centering in current online and in-service penetrated electromagnetic non-destructive testing is effectively solved, thus consistency of circumferential detection sensitivities of the detected workpieces can be ensured.
Description
Affiliated technical field
The present invention relates to a kind of method for designing of the cannot-harm-detection device, particularly relate to a kind of method for designing that detected pieces is moved along externally wearing type probe axis all the time.
Background technology
Externally wearing type probe is the conventional detection probe in electromagnetic nondestructive equipment, is used for the online and off-line through mode testing of metal tube, rod, wire rod.Conventional externally wearing type probe adopts following structure conventionally, and magnetic test coil is fastened on coil winding skeleton outer peripheral face, and coil winding skeleton is fixed in probing shell.Externally wearing type probe is fixed on detection line, and the central through hole that tested metal tube, rod, wire rod pass the coil winding skeleton in externally wearing type probe by mechanical driving device moves.In the ideal situation, it is tested metal tube, rod, the size shape of wire rod is regular, in diastrophic situation, tested metal tube, rod, wire rod twines the coil in externally wearing type probe the axis operation of the central through hole of skeleton, but the impact due to current manufacturing process technology level, tested metal tube, rod, wire rod is difficult to guarantee completely without flexural deformation, when tested metal tube, rod, while there is flexural deformation in certain part of wire rod (even if these flexural deformations are less), tested metal tube, rod, this part of wire rod will depart from the axis operation of the central through hole of the coil winding skeleton in externally wearing type probe, because electromagnetic detection coil sensitivity is higher, metal tube, rod, wire rod departs from axis and will cause magnetic test coil built-in field that larger variation occurs, to there is larger fluctuation in the detection signal that externally wearing type probe gathers, the undesired signal producing will have a strong impact on tested metal tube, rod, normally detecting of defect in wire rod.
Summary of the invention
The object of the invention is to overcome the deficiency of prior art, a kind of method for designing that detected pieces is moved along externally wearing type probe axis is all the time provided, by increase one deck fluid bag parts in externally wearing type probe, even when realizing certain part of tested metal tube, rod, wire rod and occurring flexural deformation, tested metal tube, rod, wire rod be the axis operation of the central through hole of the coil winding skeleton in externally wearing type probe all the time also.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method for designing that detected pieces is moved along externally wearing type probe axis all the time, between coil winding skeleton in externally wearing type probe and shell, increase one deck fluid bag, a centering folder is fixed respectively at the two ends of coil winding skeleton; Described fluid bag can crimp, and coil winding skeleton can be moved along any direction perpendicular to axial direction, and the liquid in fluid bag is nontoxic, harmless, non-corrosiveness, nonflammable cryogenic liquid; Described centering folder can be clamped detected pieces, and detected pieces is moved all the time on the axis of externally wearing type probe coil winding skeleton; When detected pieces departs from original operation axis, detected pieces, by the fluid bag driving outside coil winding skeleton extruding coil winding skeleton, together departs from original operation axis, and detected pieces can remain on the axis of coil winding skeleton and move; Because magnetic test coil is fastened at the outer peripheral face of coil winding skeleton, so detected pieces can be moved all the time on the axis of magnetic test coil.
The invention has the beneficial effects as follows, a kind of method for designing that detected pieces is moved along externally wearing type probe axis is all the time provided, by increase one deck fluid bag parts in externally wearing type probe, deformable while utilizing fluid bag stressed, revertible feature while not stressing, even if realize tested metal tube, rod, while there is flexural deformation in certain part of wire rod, tested metal tube, rod, wire rod also can be all the time coil in externally wearing type probe twine the axis operation of the central through hole of skeleton, efficiently solve current online, a difficult problem for tested workpiece centering operation in in-service through mode electromagnetic nondestructive, guarantee the consistance of the circumferential detection sensitivity of tested workpiece.
Below in conjunction with embodiment, the present invention is described in further detail, but a kind of detected pieces that makes of the present invention is not limited to embodiment along the method for designing of externally wearing type probe axis operation all the time.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is a kind of externally wearing type probe cross-sectional view of the embodiment of the present invention.
Fig. 2 is a kind of externally wearing type probe schematic three dimensional views of the embodiment of the present invention.
Fig. 3 is the detection schematic diagram of a kind of externally wearing type probe of the embodiment of the present invention.
Fig. 4 is the detection schematic diagram of conventional externally wearing type probe.
In figure, 1. coil winding skeleton, 2. magnetic test coil, 3. fluid bag, 4. shell, 5. centering folder, 6. detected pieces.
Embodiment
Embodiment as shown in Figure 1, Figure 2, Figure 3 shows, a kind of method for designing that detected pieces is moved along externally wearing type probe axis all the time of the present invention, between coil winding skeleton 1 in externally wearing type probe and shell 4, increase one deck fluid bag 3, a centering folder 5 is fixed respectively at the two ends of coil winding skeleton 1; Described fluid bag 3 can crimp, and coil winding skeleton 1 can be moved along any direction perpendicular to axial direction, and the liquid in fluid bag 3 is nontoxic, harmless, non-corrosiveness, nonflammable cryogenic liquid, for example water; Described centering folder 5 can be clamped detected pieces 6, and detected pieces 6 is moved all the time on the axis of externally wearing type probe coil winding skeleton 1; When detected pieces 6 departs from original operation axis, detected pieces 6, by the fluid bag 3 driving outside coil winding skeleton 1 extruding coil winding skeleton 1, together departs from original operation axis, and detected pieces 6 can remain on the axis of coil winding skeleton 1 and move; Because magnetic test coil 2 is fastened at the outer peripheral face of coil winding skeleton 1, so detected pieces 6 can be moved all the time on the axis of magnetic test coil 2.Fig. 4 is the detection schematic diagram of conventional externally wearing type probe, by relatively, according to the externally wearing type probe of method for designing design of the present invention, is obviously better than conventional externally wearing type probe, has solved the difficult problem that detected pieces centering operation detects.
Above-described embodiment is only used for further illustrating a kind of method for designing that detected pieces is moved along externally wearing type probe axis all the time of the present invention; but invention is not limited to embodiment; any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all fall in the protection domain of technical solution of the present invention.
Claims (1)
1. make detected pieces all the time along a method for designing for externally wearing type probe axis operation, it is characterized in that: between the coil winding skeleton in externally wearing type probe and shell, increase one deck fluid bag, a centering folder is fixed respectively at the two ends of coil winding skeleton; Described fluid bag can crimp, and coil winding skeleton can be moved along any direction perpendicular to axial direction, and the liquid in fluid bag is nontoxic, harmless, non-corrosiveness, nonflammable cryogenic liquid; Described centering folder can be clamped detected pieces, and detected pieces is moved all the time on the axis of externally wearing type probe coil winding skeleton; When detected pieces departs from original operation axis, detected pieces, by the fluid bag driving outside coil winding skeleton extruding coil winding skeleton, together departs from original operation axis, and detected pieces can remain on the axis of coil winding skeleton and move; Because magnetic test coil is fastened at the outer peripheral face of coil winding skeleton, so detected pieces can be moved all the time on the axis of magnetic test coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410016562.5A CN103698389B (en) | 2014-01-15 | 2014-01-15 | A kind of make detected pieces all the time along externally wearing type probe axis run method |
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| CN201410016562.5A CN103698389B (en) | 2014-01-15 | 2014-01-15 | A kind of make detected pieces all the time along externally wearing type probe axis run method |
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| CN103698389A true CN103698389A (en) | 2014-04-02 |
| CN103698389B CN103698389B (en) | 2016-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318575A (en) * | 2018-01-15 | 2018-07-24 | 中国石油大学(华东) | A kind of the tubing string detection probe and detecting system of ac magnetic field |
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| US4655614A (en) * | 1985-03-14 | 1987-04-07 | Jean Walterscheid Gmbh | Bearing ring for drive assembly having wide angle joint and protective funnel |
| CN2249412Y (en) * | 1995-07-11 | 1997-03-12 | 哈尔滨最一特机电设备厂 | Defects detector without damage to oil water well tube and rod |
| US5793205A (en) * | 1996-03-14 | 1998-08-11 | Framatome Technologies, Inc. | Coil and guide system for eddy current examination of pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318575A (en) * | 2018-01-15 | 2018-07-24 | 中国石油大学(华东) | A kind of the tubing string detection probe and detecting system of ac magnetic field |
| CN108318575B (en) * | 2018-01-15 | 2022-11-25 | 中国石油大学(华东) | Tubular column detection probe and detection system of alternating current electromagnetic field |
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| CN103698389B (en) | 2016-04-20 |
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