CN210442306U

CN210442306U - Probe for drill rod magnetic leakage flaw detector

Info

Publication number: CN210442306U
Application number: CN201921191388.2U
Authority: CN
Inventors: 吴春学; 吴国标; 赵齐兵; 杨善利
Original assignee: Anqing Anke Fine Mechanics Co ltd
Current assignee: Anqing Anke Fine Mechanics Co ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-05-01
Anticipated expiration: 2029-07-26

Abstract

The utility model discloses a probe for drilling rod magnetic leakage flaw detector relates to magnetic leakage flaw detector technical field, if adopt the mode of violently indulging the installation to survey for solving current flaw detection equipment, produces the blind area easily, influences the problem of flaw detection result. Be provided with first screw mechanism on the outer wall of probe main part one end, be provided with second screw mechanism on the outer wall of the probe main part other end, install the nut on the first screw mechanism, the one end of probe main part is provided with the wiring end, the one end of wiring end is provided with the wire, the other end of probe main part is provided with magnetism and feels the probe, the outside of magnetism is felt the probe and is provided with the horn head, the inside of horn head is provided with the wide-angle mirror, the one end of horn head is provided with the connecting piece, be provided with the picture frame on the outer wall of wide-angle mirror.

Description

Probe for drill rod magnetic leakage flaw detector

Technical Field

The utility model relates to a magnetic leakage flaw detector technical field specifically is a probe for drilling rod magnetic leakage flaw detector.

Background

The magnetic particle inspection method can detect small defects which are exposed on the surface and cannot be directly observed by naked eyes or by means of a magnifying glass, and can also detect near-surface defects which are not exposed on the surface and are buried below the surface by a few millimeters. The flaw detection principle is that when the ferromagnetic steel pipe is magnetized fully, the magnetic lines of force in the pipe wall are blocked by the defects on the surface or near the surface of the ferromagnetic steel pipe, the magnetic lines of force at the defects are distorted, and a part of the magnetic lines of force leak out of the inner surface and the outer surface of the ferromagnetic steel pipe to form a leakage magnetic field. And an electromagnetic detection method for detecting the leakage magnetic field by using a detection element to find the defects, namely leakage magnetic flaw detection. When the leakage magnetic field is picked up by the detecting element which is positioned on the surface of the steel pipe and moves relative to the steel pipe and is converted into a defect electric signal, a signal reflecting the defect can be obtained through the probe, so that the defect is judged and processed, and the flaw detection sensitivity is reduced along with the increase of the wall thickness from the outer surface to the inner surface of the steel pipe with the outer surface of the steel pipe as the highest. When the direction of the defect is vertical to the direction of the magnetic force line, the intensity of the leakage magnetic field at the defect is maximum, and the flaw detection sensitivity is also highest.

However, if the existing flaw detection equipment adopts a transverse and longitudinal installation mode for detection, blind areas are easy to generate, and the flaw detection result is influenced; therefore, the existing requirements are not met, and the probe for the drill rod flux leakage flaw detector is provided for the existing requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a probe for drilling rod magnetic leakage flaw detector to if the mode of adopting violently indulging the installation of the current flaw detection equipment that proposes in solving above-mentioned background art is surveyed, produces the blind area easily, influences the problem of the result of detecting a flaw.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a probe for drilling rod magnetic leakage flaw detector, includes the probe main part, be provided with first screw mechanism on the outer wall of probe main part one end, be provided with second screw mechanism on the outer wall of the probe main part other end, install the nut on the first screw mechanism, the one end of probe main part is provided with the wiring end, the one end of wiring end is provided with the wire, the other end of probe main part is provided with magnetism and feels the probe, the outside of magnetism sense probe is provided with the horn head, the inside of horn head is provided with the wide-angle mirror, the one end of horn head is provided with the connecting piece, be provided with the picture frame on the outer wall of wide-angle mirror.

Preferably, the horn head is in threaded connection with a second threaded mechanism on the probe body through a connecting piece.

Preferably, the inner wall of the mirror frame is provided with a clamping groove, and the mirror frame is fixedly connected with the wide-angle lens through the clamping groove.

Preferably, the mirror frame is in threaded connection with the horn head through a screw.

Preferably, the outer wall of the horn head is provided with a wear-resistant steel plate, and the wear-resistant steel plate is connected with the horn head in a welding mode.

Preferably, the probe body is in threaded connection with the magnetic flux leakage flaw detector through a first threaded mechanism.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an install the horn head additional at the magnetic induction probe end of drilling rod magnetic leakage flaw detector probe, and the inside of horn head is provided with the wide-angle lens, and the detection scope of probe can effectively be felt to magnetism in the cooperation of the structure of opening outward and the wide-angle lens of horn head, and the detection blind area that produces when the at utmost reduces violently indulges the installation.

2. Through setting up wear-resisting steel sheet on the outer wall at the horn head, because of the setting of horn head, when the probe main part removes or places, the horn head can protect inside magnetic induction probe not receive to collide with, and wear-resisting steel sheet of its outer wall can effectively improve wear-resisting, the crashproof performance of horn head, improves the life of this structure.

3. Through adopting helicitic texture installation horn head and wide-angle mirror, threaded connection simple structure, fixed firm, easy dismounting have replaced original probe position and external direct contact because of horn head and wide-angle mirror, can lead to the fact the damage for a long time after crossing unavoidably, so set up it into detachable construction, it is more convenient to change and maintain.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the horn head of the present invention;

FIG. 3 is a schematic view of a partial structure of a wide-angle lens according to the present invention;

in the figure: 1. a probe body; 2. a first screw mechanism; 3. a nut; 4. a terminal; 5. a wire; 6. a horn head; 7. a connecting member; 8. a screw; 9. a second screw mechanism; 10. a magnetic induction probe; 11. wear-resistant steel plates; 12. a wide-angle lens; 13. a mirror frame; 14. a clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: a probe for a drill rod magnetic leakage flaw detector comprises a probe body 1, wherein a first screw mechanism 2 is arranged on the outer wall of one end of the probe body 1, the first screw mechanism 2 is used for installing the probe body 1 on the magnetic leakage flaw detector, a second screw mechanism 9 is arranged on the outer wall of the other end of the probe body 1, the second screw mechanism 9 is used for installing a horn head 6, a nut 3 is installed on the first screw mechanism 2, the nut 3 can lock the first screw mechanism 2 when being installed, a wiring terminal 4 is arranged at one end of the probe body 1, a lead 5 is arranged at one end of the wiring terminal 4, a magnetic induction probe 10 is arranged at the other end of the probe body 1, the magnetic induction probe 10 is used for detecting the defect condition of the surface of a steel pipe, the horn head 6 is arranged outside the magnetic induction probe 10, a wide-angle lens 12 is arranged inside the horn head 6, and the wide-angle lens 12, the visual field blind area is reduced to the maximum extent, and the one end of horn head 6 is provided with connecting piece 7, is provided with picture frame 13 on the outer wall of wide-angle mirror 12.

Further, the horn head 6 is in threaded connection with the second threaded mechanism 9 on the probe body 1 through the connecting piece 7, the horn head 6 plays a role in protecting the magnetic induction probe 10, and the magnetic induction probe 10 is prevented from being collided when the probe body 1 is moved and placed.

Further, be provided with draw-in groove 14 on the inner wall of picture frame 13, and picture frame 13 passes through draw-in groove 14 and wide-angle lens 12 fixed connection, and wide-angle lens 12 can improve the detection range of magnetic induction probe 10, the at utmost reduces the blind area.

Further, the lens frame 13 is screwed with the horn head 6 by the screw 8, so that the wide-angle lens 12 inside the lens frame 13 can be detached.

Further, be provided with wear-resisting steel sheet 11 on the outer wall of horn head 6, and wear-resisting

steel sheet

11 and 6 welded connection of horn head, wear-resisting and crashproof performance that horn head 6 can effectively be improved in wear-resisting steel sheet 11's setting.

Further, the probe body 1 is in threaded connection with the magnetic flux leakage flaw detector through the first screw mechanism 2, and the probe can be installed at any position of the magnetic flux leakage flaw detector through the matching of the first screw mechanism 2 on the probe body 1 and the nut 3.

The working principle is as follows: when the magnetic induction probe is used, the probe main body 1 is installed on a drill rod magnetic leakage flaw detector through the cooperation of the first screw mechanism 2 and the nut 3, the alignment probes are respectively installed in the transverse direction and the longitudinal direction, the effect of comprehensively scanning the outer wall of a steel pipe is achieved, during detection, the magnetic induction probe 10 can be scanned on the surface of the steel pipe, when a magnetic leakage field formed by defects is scanned, the vertical component of the magnetic leakage field is converted into an electric signal and sent to a computer after amplification and noise elimination processing, analysis, operation and other processing are carried out, the horn head 6 is installed outside the magnetic induction probe 10, the wide-angle lens 12 is arranged in the horn head 6, the detection range of the magnetic induction probe 10 can be effectively amplified, the detection blind area is reduced to the maximum extent, the wear-resistant steel plate 11 is arranged on the outer wall of the horn head 6, when the probe main body 1 is moved or placed, the horn head 6 can protect the magnetic induction probe 10 inside from being collided, and the wear-resistant steel plate, And (4) crashworthiness.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a probe for drilling rod magnetic leakage flaw detector, includes probe main part (1), its characterized in that: be provided with first screw mechanism (2) on the outer wall of probe main part (1) one end, be provided with second screw mechanism (9) on the outer wall of probe main part (1) other end, install nut (3) on first screw mechanism (2), the one end of probe main part (1) is provided with wiring end (4), the one end of wiring end (4) is provided with wire (5), the other end of probe main part (1) is provided with magnetism and feels probe (10), the outside of magnetism sense probe (10) is provided with horn head (6), the inside of horn head (6) is provided with wide-angle lens (12), the one end of horn head (6) is provided with connecting piece (7), be provided with picture frame (13) on the outer wall of wide-angle lens (12).

2. The probe for the drill rod flux leakage flaw detector according to claim 1, characterized in that: the horn head (6) is in threaded connection with a second thread mechanism (9) on the probe body (1) through a connecting piece (7).

3. The probe for the drill rod flux leakage flaw detector according to claim 1, characterized in that: a clamping groove (14) is formed in the inner wall of the mirror frame (13), and the mirror frame (13) is fixedly connected with the wide-angle lens (12) through the clamping groove (14).

4. The probe for the drill rod flux leakage flaw detector according to claim 1, characterized in that: the mirror frame (13) is in threaded connection with the horn head (6) through a screw (8).

5. The probe for the drill rod flux leakage flaw detector according to claim 1, characterized in that: the outer wall of the horn head (6) is provided with a wear-resistant steel plate (11), and the wear-resistant steel plate (11) is connected with the horn head (6) in a welding mode.

6. The probe for the drill rod flux leakage flaw detector according to claim 1, characterized in that: the probe body (1) is in threaded connection with the magnetic flux leakage flaw detector through a first threaded mechanism (2).