CN209446525U

CN209446525U - A kind of far-field eddy in-pipeline detector coil

Info

Publication number: CN209446525U
Application number: CN201920044066.9U
Authority: CN
Inventors: 刘欣
Original assignee: Chengde Petroleum College
Current assignee: Chengde Petroleum College
Priority date: 2019-01-11
Filing date: 2019-01-11
Publication date: 2019-09-27
Anticipated expiration: 2029-01-11

Abstract

The utility model discloses a kind of far-field eddy in-pipeline detector coils, including wrapping post and PULL BOX, the top and bottom of the wrapping post passes through connector respectively and is equipped in the mounting hole opened up in baffle a and baffle b, the outer surface of the wrapping post offers winding slot, coil body a and coil body b are wound in the winding slot, PULL BOX is mounted on the two sides outer wall of the wrapping post, spring is installed on the bottom surface inner wall of the PULL BOX, eyelet strip is installed on the spring, connecting rod is installed at the top of the eyelet strip, outer baffle is installed on the side outer wall of the PULL BOX.The utility model is by changing the winding mode of coil as alternating expression arrangement, to which the wrapping post in same length increases significantly compared to winding mode coil turn arranged in parallel, to substantially increase the induction of coil, the electromagnetic penetration power of coil is also further improved.

Description

A kind of far-field eddy in-pipeline detector coil

Technical field

The utility model belongs to detector coil technical field, and in particular to a kind of far-field eddy in-pipeline detector line Circle.

Background technique

EDDY CURRENT refers to using electromagnetic induction principle, by the variation for vortex of inducting in measurement examined workpiece come nondestructively Certain performances of conductive material and its workpiece, or the lossless detection method of discovery defect are evaluated, is most attached most importance to during EDDY CURRENT The structure wanted then is detector coil, and subsequent detection effect is influenced between the quality of detector coil.

Compare a kind of utility model patent (CN201621156575.3) Pulsed eddy current testing coil mounting base and pulse Test coil of eddy current, patent Pulsed eddy current testing coil mounting base coil winding post cross-sectional circumference is square can make to twine for this Transmitting coil and receiving coil after are square, more stronger than cylinder type coil magnetic induction intensity, and penetration power is stronger, can be improved The Pulsed eddy current testing coil scope of application；But winding mode or existing this parallel winding mode, thus number of turns Do not increase, sensing capability is simultaneously not up to best.

Utility model content

The purpose of this utility model is to provide a kind of far-field eddy in-pipeline detector coils, to solve above-mentioned background skill The problem of being proposed in art.

To achieve the above object, the utility model provides the following technical solutions: a kind of far-field eddy in-pipeline detector line Circle, including wrapping post and PULL BOX, the top and bottom of the wrapping post pass through connector respectively and are equipped with baffle a and baffle b In the mounting hole inside opened up, the outer surface of the wrapping post offers winding slot, be wound in the winding slot coil body a with Coil body b is mounted on PULL BOX on the two sides outer wall of the wrapping post, is equipped with bullet on the bottom surface inner wall of the PULL BOX Spring is equipped with eyelet strip on the spring, is equipped with connecting rod at the top of the eyelet strip, on the side outer wall of the PULL BOX Outer baffle is installed, offers threading hole a and threading hole b on the outer baffle and eyelet strip.

Preferably, conductive sheet is mounted on the side outer wall of the baffle a and baffle b.

Preferably, the connecting rod extends through to the outside of PULL BOX and is equipped with press head.

Preferably, there are six the PULL BOX installations, and PULL BOX three are one group of vertical central axis about wrapping post It is symmetrically arranged with two groups.

Preferably, the threading hole a is equal with the diameter of threading hole b.

Preferably, the coil body a and coil body b is each passed through threading hole a and threading hole b extends to PULL BOX It is interior.

Compared with prior art, the utility model has the beneficial effects that

1. by change coil winding mode be alternating expression arrange, thus same length wrapping post compared to parallel The winding mode coil turn of arrangement increases significantly, to substantially increase the induction of coil, also further improves line The electromagnetic penetration power of circle.

2. coil can be wound according to the track of winding slot and coil inlay card enters coiling by opening up winding slot on wrapping post In slot, so that coil arrangement be made tightly to have item, displacement will not be generated in winding process.

3. by being equipped with PULL BOX on the outside of wrapping post, coil after mounting, can be penetrated the end of a thread in PULL BOX, thus The end of a thread can be fixed by eyelet strip, and each section of coil all there can be fixed device to be fixed, to substantially increase The stationarity of coil installation.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the utility model wrapping post；

Fig. 3 is the schematic diagram of internal structure of the utility model PULL BOX.

In figure: 1, baffle a；2, wrapping post；3, coil body a；4, coil body b；5, conductive sheet；6, PULL BOX；7, outer Baffle；8, baffle b；9, mounting hole；10, connector；11, winding slot；12, threading hole a；13, press head；14, connecting rod；15, Eyelet strip；16, threading hole b；17, spring.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out clearly the technical solution in utility model embodiment Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work The every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of far-field eddy in-pipeline detector coil, Including wrapping post 2 and PULL BOX 6, the top and bottom of wrapping post 2 passes through connector 10 respectively and is equipped with baffle a1 and baffle b8 In the mounting hole 9 inside opened up, the outer surface of wrapping post 2 offers winding slot 11, by opening up winding slot 11, coil can according to around The track of wire casing 11 is wound and coil inlay card enters in winding slot, to make coil arrangement tightly have item, in winding process also not Displacement can be generated, coil body a3 and coil body b4 are wound in winding slot 11, is mounted on the two sides outer wall of wrapping post 2 PULL BOX 6 is equipped with spring 17 on the bottom surface inner wall of PULL BOX 6, eyelet strip 15, the top of eyelet strip 15 is equipped on spring 17 Connecting rod 14 is installed, outer baffle 7 is installed on the side outer wall of PULL BOX 6, offers and wears on outer baffle 7 and eyelet strip 15 String holes a12 and threading hole b16.

It is mounted on conductive sheet 5 on the side outer wall of baffle a1 and baffle b8, connecting rod 14 is extended through to PULL BOX 6 Outside press head 13 is installed, there are six the installations of PULL BOX 6, and PULL BOX 6 three is in one group of longitudinal direction about wrapping post 2 Mandrel is symmetrically arranged with two groups, and by being equipped with PULL BOX 6, coil after mounting, can be penetrated the end of a thread in PULL BOX 6, thus The end of a thread can be fixed by eyelet strip 15, and each section of coil all there can be fixed device to be fixed, to greatly improve The stationarity of coil installation, threading hole a12 is equal with the diameter of threading hole b16, coil body a3 and coil body b4 difference It extends in PULL BOX 6 across threading hole a12 and threading hole b16, is arranged by changing the winding mode of coil for alternating expression, from And increase significantly in the wrapping post of same length compared to winding mode coil turn arranged in parallel, to substantially increase line The induction of circle also further improves the electromagnetic penetration power of coil.

The working principle and process for using of the utility model: coil body a3 and coil body b4 are wound in winding slot, Press head 13 is pressed, eyelet strip 15 is lower to be moved, when two threading holes on eyelet strip 15 are aligned with threading hole a12 with threading hole b16 When, coil body a3 and coil body b4 the end of a thread are respectively penetrated in the threading hole a12 and threading hole b16 of outer baffle 7 and threaded In two threading holes on plate 15, press head 13 is unclamped, due to the return action of spring 17, eyelet strip 15 is moved up, by coil Ontology a3 is fixed with coil body b4, and wrapping post 2 is mounted in detector, and conducting wire is connect with conductive sheet 5.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of far-field eddy in-pipeline detector coil, including wrapping post (2) and PULL BOX (6), it is characterised in that: it is described around The top and bottom of terminal (2) passes through connector (10) respectively and is equipped with the mounting hole opened up in baffle a (1) and baffle b (8) (9) in, the outer surface of the wrapping post (2) is offered winding slot (11), is wound with coil body a in the winding slot (11) (3) it with coil body b (4), is mounted on PULL BOX (6) on the two sides outer wall of the wrapping post (2), the PULL BOX (6) It is equipped on the inner wall of bottom surface spring (17), is equipped with eyelet strip (15) on the spring (17), the top of the eyelet strip (15) It is equipped with connecting rod (14), is equipped with outer baffle (7) on the side outer wall of the PULL BOX (6), the outer baffle (7) and threading Threading hole a (12) and threading hole b (16) are offered on plate (15).

2. a kind of far-field eddy in-pipeline detector coil according to claim 1, it is characterised in that: the baffle a (1) Conductive sheet (5) are mounted on on the side outer wall of baffle b (8).

3. a kind of far-field eddy in-pipeline detector coil according to claim 1, it is characterised in that: the connecting rod (14) it extends through to the outside of PULL BOX (6) and press head (13) is installed.

4. a kind of far-field eddy in-pipeline detector coil according to claim 1, it is characterised in that: the PULL BOX (6) there are six installation, and PULL BOX (6) three are symmetrically arranged with two groups for one group of vertical central axis about wrapping post (2).

5. a kind of far-field eddy in-pipeline detector coil according to claim 1, it is characterised in that: the threading hole a (12) equal with the diameter of threading hole b (16).

6. a kind of far-field eddy in-pipeline detector coil according to claim 1, it is characterised in that: the coil body A (3) and coil body b (4) are each passed through threading hole a (12) and threading hole b (16) and extend in PULL BOX (6).