CN209673719U - The supporting mechanism of Magnetosensitive sensor array and steel pipe longitudinal defect leakage magnetic detection device - Google Patents

Abstract

The utility model discloses a kind of supporting mechanisms of Magnetosensitive sensor array, including support arm, opening and closing arm, moving sleeve, fixes sleeve, adjusting screw rod；What one end of opening and closing arm can rotate is connected to one end of support arm, the fixed Magnetosensitive sensor array in the middle part of opening and closing arm, moving sleeve sliding is socketed in inside fixes sleeve, one end of fixes sleeve is fixed on the upper of rotating ring, it is equipped with internal screw thread inside moving sleeve to be threadedly coupled with adjusting screw rod, adjusting screw rod, fixes sleeve, quill are overlapped with Magnetosensitive sensor array with magnetization pole shoe quadrature position.The steel pipe longitudinal defect leakage magnetic detection device using the supporting mechanism is also disclosed in the utility model.The utility model has the beneficial effects that by adjusting supporting mechanism and then adjusting the movement of Magnetosensitive sensor array horizontal direction, guarantee that Magnetosensitive sensor array and steel pipe are tangent always, the center line of Magnetosensitive sensor array is overlapped always with magnetization pole shoe quadrature position, in detection steel pipe longitudinal defect optimal location.

Description

The supporting mechanism of Magnetosensitive sensor array and steel pipe longitudinal defect leakage magnetic detection device

Technical field

The utility model relates to a kind of structure applied to leakage magnetic detection device and using the device of the structure, more particularly to Be a kind of support structure applied to Magnetosensitive sensor array and the steel pipe longitudinal direction leakage magnetic detection device using the structure.

Background technique

Diameter is the steel pipe of 30-508mm range, to the magneto-dependent sensor battle array of the rotation leakage magnetic detection device of its longitudinal defect The supporting mechanism of column is the key technology for being related to the reliability and stability of testing result always.More specifically, Yao Shixian To oil drill rocker, production pipe, oil well casing, leakage field side that the longitudinal defect of high-pressure boiler tube and various other steel pipes is rotated Method detection, it is always state, interior that the structure and method for supporting of sensor array supporting mechanism are most important to the result of detection One of the research emphasis of outer colleague.

The utility model people monograph " steel tube truss technology and system " (China Machine Press 2 months 2009) it Chapter 3, having studied magnetizing system influences defect magnetic flux leakage field, it was concluded that: a pair is symmetrically distributed in the magnetic of steel pipe two sides Change pole shoe, the effect of steady permanent magnetic field of direct current is applied on steel pipe, on the outer surface of steel tube of magnetization pole shoe quadrature position, lacks Sunken magnetic flux leakage is most strong, most easily detected；The quadrature component of defect magnetic flux leakage field is really felt with the tangent magneto-dependent sensor of steel tube surface The signal noise ratio highest answered.

Currently, the similar steel pipe leakage of the Forster company of the OEM company in the U.S., Tubscope company and Germany in the world Magnetosensitive sensor array supporting mechanism is fitted in steel using the centrifugation power drive Magnetosensitive sensor array of pendulum in magnetic detection system In pipe surface, still, the position of the supporting axis of pendulum causes when detecting different-diameter steel pipe, and Magnetosensitive sensor array cannot be total It is in the position orthogonal with magnetization pole shoe；Magnetosensitive sensor array can not be always tangent with steel tube surface.Simultaneously pendulum from There are proportional relations for mental and physical efforts and rotation speed, quickly when rotation detection, pressure of the Magnetosensitive sensor array detection faces to steel pipe face It is too big, serious wear；When low speed rotation detects, sensor cannot usually be closed with steel pipe face paste；In addition, two groups of complicated pendulum The supporting mechanism of hammer, adjustment and maintenance are all very difficult.

The country, the applicant " are changed without the large-diameter steel pipe non-blind area detection method and dress of probe in utility model patent Set " it is to sense magnetosensitive by spring in a kind of detection method and device once announced in (ZL2004 1 0014046.5) Device array frame is urged to steel tube surface, and, there is also when detection different-diameter steel pipe, Magnetosensitive sensor array cannot always be located for it In the position orthogonal with magnetization pole shoe；Magnetosensitive sensor array can not be with the problems such as steel tube surface is tangent.

In addition, as shown in figure 3, a kind of magnetosensitive sensing of the steel pipe longitudinal defect leakage magnetic detection device used for the prior art The supporting mechanism of device array: frame 23 is that Magnetosensitive sensor array 500' is urged to steel pipe by central axis 25 and spring 9 The surface 600'.But when detecting different-diameter steel pipe, since the position of central axis 25 is fixed and the work of regular length frame 23 With the Magnetosensitive sensor array 500' made is difficult in the position A-B orthogonal with magnetization pole shoe 300'；Magnetosensitive sensor array The detection faces of 500' can not cause defect magnetic flux leakage field to be difficult reliably to be detected, obtain always with steel pipe 600' plane tangent Flaw indication noise ratio is poor, is easy to miss inspection.

Know the supporting mechanism of existing " ZDJC series steel pipe Magnetic Flux Leakage Testing System " incidental Magnetosensitive sensor array, Often occurs the longitudinal defect missing inspection problem on steel pipe due to the above reasons,；Replace simultaneously detection specification is difficult, adjustment is cumbersome, Serious wear；The key technical indexes difficulty meets international standard ISO-10893-3-2011 (for longitudinally and/or laterally defect detection The automatic complete cycle side magnetic leakage detection of seamless and welding ferromagnetic steel pipe (except submerged-arc welding)) require, detection sensitivity difficulty meets N5 Rank, also difficult satisfaction≤3dB requirement, signal-noise meet the requirement such as 8dB than difficulty to circumferential detection sensitivity difference.

Through investigating, the foreign corporations such as U.S. TUBSCOPE produce serial steel pipe Magnetic Flux Leakage Testing System, similarly exist above-mentioned Serious problems.

Utility model content

The technical problem to be solved by the utility model is to: how to enable the center line of Magnetosensitive sensor array always In the position orthogonal with magnetization pole shoe.

The utility model is to solve above-mentioned technical problem by the following technical programs: the utility model discloses a kind of magnetosensitive The supporting mechanism of sensor array, be applied to steel pipe longitudinal defect leakage magnetic detection device on, the supporting mechanism include support arm, Opening and closing arm, moving sleeve, fixes sleeve, adjusting screw rod, guiding mechanism；What one end of the opening and closing arm can rotate is connected to branch One end of brace, the fixed Magnetosensitive sensor array in the middle part of the opening and closing arm, what moving sleeve can be slided by guiding mechanism It is socketed in inside fixes sleeve, one end of fixes sleeve is fixed on leakage magnetic detection device, is equipped with inside the moving sleeve interior Screw thread, one end of adjusting screw rod are equipped with external screw thread, and the adjusting screw rod is after rotating ring and at the internal screw thread of moving sleeve Connection, one end of Magnetosensitive sensor array and steel pipe are tangent, the adjusting screw rod, fixes sleeve, quill, magneto-dependent sensor The center line of array is overlapped always with the quadrature position of the magnetization pole shoe on steel pipe longitudinal defect leakage magnetic detection device.

The utility model by rotation adjusting screw rod, under the action of threaded connection, moving sleeve can be realized rotation and Horizontal direction is mobile, then by the limit of guiding mechanism, so that moving sleeve only realizes moving back and forth for horizontal direction, and then adjusts Magnetosensitive sensor array movement in the horizontal direction is saved, so that Magnetosensitive sensor array is weighed with the horizontal line of steel pipe always always It closes.

Preferably, the guiding mechanism includes the feather key and guide groove that can mutually slide, feather key partial embedding in On moving sleeve, guide groove is the groove that fixes sleeve inner surface is arranged in, and guide groove is parallel to fixes sleeve, and feather key is caught in In guide groove.

Preferably, the supporting mechanism further includes universal joint, spring assembly；The other end of the opening and closing arm is fixedly mounted ten thousand To one end of section, the other end connecting spring component of the universal joint, spring assembly is connected to one end of moving sleeve.

Preferably, the spring assembly includes spring base, spring(-supported) mount, spring push-rod, spring, and the spring is placed in spring base Inside, one end of spring(-supported) mount are fixed on one end of spring base, and the other end of spring(-supported) mount is fixed on moving sleeve, and the spring pushes away One end connecting spring of bar, other end universal-joint.

Preferably, the support arm is equipped with the first braking surface, and the first braking surface is vertical plane, and the opening and closing arm is equipped with Second braking surface, the second braking surface include vertical plane and inclined surface, and the first braking surface is overlapped with the second braking surface, when the first braking When being overlapped at face and the vertical plane of the second braking surface, the angle between support arm and opening and closing arm is maximum.

Wherein, spring is in compressed state always, and spring has outside elastic force, can push always spring and push away Bar, spring push-rod act on universal joint, so that the vertical plane on the second braking surface on opening and closing arm is bonded simultaneously with the first braking surface Mutually restrict, guarantee that Magnetosensitive sensor array be in a stable state, regular situation lower support arm between opening and closing arm In maximum subtended angle state, i.e., in detection steel pipe longitudinal defect optimal location；Meanwhile the angle between support arm and opening and closing arm It can shrink, when tube bending part reaches detection position, Magnetosensitive sensor array can be pressed automatically from steel tube surface, reduced Abrasion.

It preferably, further include magneto-dependent sensor adjuster, magneto-dependent sensor adjuster is fixed on Magnetosensitive sensor array.Magnetic Dependent sensor adjuster, which can finely tune Magnetosensitive sensor array initial position and push against, not to be loosened.

Preferably, the Magnetosensitive sensor array and the tangent one end of steel pipe are equipped with protection inclined-plane.Protect the setting on inclined-plane It enables to when steel tube head arrives, protection inclined-plane is squeezed, and is driven Magnetosensitive sensor array to shrink, is avoided hitting It is bad.

It preferably, further include interior fixed ring, outer fixed ring, interior fixed ring is fixed by screws in the interior table of rotating ring Face, fixes sleeve are fixed on the side of interior fixed ring, and outer fixed ring is fixed by screws in the outer surface of rotating ring, and interior solid Determine ring, outer fixed ring is equipped with the hole passed through for adjusting screw rod；It further include limit plate, limit plate is fixed on the side of outer fixed ring Face, limit plate are equipped with the hole passed through for adjusting screw rod.

The utility model also provides a kind of steel pipe longitudinal defect leakage field inspection of supporting mechanism using Magnetosensitive sensor array Device is surveyed, the steel pipe longitudinal defect leakage magnetic detection device includes rotating ring, magnetizer, magnetization pole shoe, supporting mechanism, magnetosensitive Sensor array；Steel pipe is overlapped with the central axis of rotating ring, and the magnetizer is symmetrically pacified along the horizontal quadrature face of steel pipe On the inner surface of rotating ring, the magnetization pole shoe is symmetrically installed on magnetizer close to steel along the horizontal quadrature face of steel pipe On the face of pipe, and magnetizer, magnetization pole shoe are symmetrical along the perpendicular quadrature face of steel pipe, what the Magnetosensitive sensor array can be adjusted Be mounted on one end of supporting mechanism, the other end of supporting mechanism is fixed on rotating ring, one end of Magnetosensitive sensor array with Steel pipe is tangent, and the center line of Magnetosensitive sensor array is overlapped always with the quadrature position of magnetization pole shoe.

The utility model is by the adjustable mode of supporting mechanism, when detecting the steel pipe of various outer diameter, as long as adjustment branch Hold mechanism, so that it may drive Magnetosensitive sensor array rectilinear direction mobile, guarantee that Magnetosensitive sensor array and steel pipe are tangent always Meanwhile the center line of Magnetosensitive sensor array is overlapped always with magnetization pole shoe quadrature position, most in detection steel pipe longitudinal defect Excellent position；It significantly improves the key technical indexes of longitudinal defect leakage magnetic detection device, meets and be more than international standard ISO- 10893-3-2011 requirement is able to achieve the month after month reliable and stable detection operation throughout the year of steel pipe longitudinal defect leakage magnetic detection device.

Preferably, the supporting mechanism, Magnetosensitive sensor array are two, are symmetrically installed on the perpendicular quadrature face of steel pipe Two sides.Two Magnetosensitive sensor arrays are set to realize that two test points, two test points increase one times of speed of detection.

The utility model has the advantage that compared with prior art

(1) the utility model is by rotation adjusting screw rod, and under the action of threaded connection, moving sleeve can be realized rotation It is mobile with horizontal direction, then by the limit of guiding mechanism, so that moving sleeve only realizes moving back and forth for horizontal direction, in turn Magnetosensitive sensor array is adjusted in the linear movement of horizontal or vertical direction, so that Magnetosensitive sensor array is longitudinal with steel pipe always Magnetization pole shoe quadrature position on defect and magnetic leakage detection device is overlapped always, it may be assumed that a pair of magnetization pole shoe and Magnetosensitive sensor array The angle of center line be always 90 °, and structure operation is simple, reliable.

(2) spring is in compressed state always in the utility model, and spring has outside elastic force, can push away always Spring push-rod, spring push-rod act on universal joint so that vertical plane on the second braking surface on opening and closing arm and the first braking Face paste, which merges, mutually to be restricted, and guarantees that Magnetosensitive sensor array is in a stable state, regular situation lower support arm and opening and closing Maximum subtended angle state is between arm, i.e., in detection steel pipe longitudinal defect optimal location；Meanwhile support arm and opening and closing arm it Between angle can shrink, when tube bending part reach detection position when, Magnetosensitive sensor array can be pressed from steel pipe automatically Abrasion is reduced on surface；

(3) setting on inclined-plane is protected to enable to when steel tube head arrives, protection inclined-plane is squeezed, and magnetosensitive is driven to pass Sensor array shrinks, avoids, and Magnetosensitive sensor array is avoided to be damaged.

(4) the utility model is by the adjustable mode of supporting mechanism, when detecting the steel pipe of various outer diameter, as long as adjustment Supporting mechanism, so that it may drive Magnetosensitive sensor array horizontal direction mobile, guarantee that Magnetosensitive sensor array and steel pipe are tangent always While, the center line of Magnetosensitive sensor array is overlapped always with the horizontal quadrature line of steel pipe, in detection steel pipe longitudinal defect Optimal location；Use the supporting mechanism of the Magnetosensitive sensor array of the longitudinal defect leakage magnetic detection device of the utility model, hence it is evident that It improves the key technical indexes of longitudinal defect leakage magnetic detection device, meets and be more than international standard ISO-10893-3-2011 (for the seamless of longitudinally and/or laterally defect detection and the automatic complete cycle side magnetic leakage inspection of welding ferromagnetic steel pipe (except submerged-arc welding) Survey) it requires, detection sensitivity meets N5 or higher level, circumferential detection sensitivity difference satisfaction≤3dB, and signal-noise ratio reaches With more than 10dB, it is able to achieve the month after month reliable and stable detection operation throughout the year of steel pipe longitudinal defect leakage magnetic detection device；

(5) two Magnetosensitive sensor arrays are set to realize that two test points, two test points increase the accuracy of detection With accuracy and speed can be will test double；

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of the supporting mechanism of Magnetosensitive sensor array of the utility model embodiment；

Fig. 2 is the structural schematic diagram using the leakage magnetic detection device of the supporting mechanism.

Fig. 3 is detection device in the prior art.

Figure label: rotating ring 100, magnetizer 200, magnetization pole shoe 300, supporting mechanism 400, support arm 401, opening and closing Arm 402, moving sleeve 403, fixes sleeve 404, adjusting screw rod 405, feather key 406, guide groove 407, universal joint 408, spring Seat 409, spring(-supported) mount 410, spring push-rod 411, spring 412, magneto-dependent sensor adjuster 413, interior fixed ring 414, outer fixed ring 415, limit plate 416, Magnetosensitive sensor array 500, protection inclined-plane 501, steel pipe 600.

Specific embodiment

It elaborates below to the embodiments of the present invention, the present embodiment before being with technical solutions of the utility model It puts and is implemented, the detailed implementation method and specific operation process are given, but the protection scope of the utility model is unlimited In following embodiments.

Embodiment one:

As shown in Figure 1, a kind of supporting mechanism of Magnetosensitive sensor array, is applied to steel pipe longitudinal defect leakage magnetic detection device On, the supporting mechanism 400 includes support arm 401, opening and closing arm 402, moving sleeve 403, fixes sleeve 404, adjusting screw rod 405, feather key 406, guide groove 407, universal joint 408, spring base 409, spring(-supported) mount 410, spring push-rod 411, spring 412, magnetic Dependent sensor adjuster 413；

Support arm 401 is incline structure, as shown in fig. 1, the lower-left end of support arm 401 and the right end of moving sleeve 403 By axis connection, the upper right side of support arm 401 is equipped with the first braking surface 4011, the first braking for connection, upper right side and opening and closing arm 402 Face 4011 is vertical plane, parallel with the orthogonal vertical face of steel pipe 600.

The opening and closing arm 402 is bending member, what left upper end can rotate the be connected to upper end of support arm 401, described The middle part for closing arm 402 is fixedly connected with Magnetosensitive sensor array 500, and bottom end is fixedly connected with universal joint 408, and wherein fixed form can be with The mode that is fixedly connected such as to be threadedly coupled, welding, the opening and closing arm 402 is equipped with the second braking surface 4021, the second braking surface 4021 include vertical plane and inclined surface, and the first braking surface 4011 can be overlapped always with the second braking surface 4021, when the first braking When being overlapped at face 4011 and the vertical plane of the second braking surface 4021, the angle between support arm 401 and opening and closing arm 402 is maximum, when When being overlapped at the first braking surface 4011 and the inclined surface of the second braking surface 4021, the angle between support arm 401 and opening and closing arm 402 Become smaller.

Moving sleeve 403 is hollow cylindrical structure open at one end, closed at one end, and right end is enclosed construction, with branch The left end of brace 401 is fixedly connected, and realizes the synchronizing moving of moving sleeve 403 and support arm 401, the left end of moving sleeve 403 Inside is extended to equipped with one section of internal screw thread for the opening of open end, and open end, internal screw thread is not arranged in entire inner cavity, Internal screw thread end is additionally provided with one section of smooth section, and the diameter of smooth section is greater than internal thread segment.

Fixes sleeve 404 is fixed on rotating ring 100, and the inside of fixes sleeve 404 is perforative cylindrical structure, The diameter of interior bone is slightly larger than the outer diameter of moving sleeve 403, and there are the gaps of sliding.

The right end of adjusting screw rod 405 has external screw thread, and external screw thread can be threadedly coupled with the internal screw thread of moving sleeve 403, Adjusting screw rod 405 by rotating ring 100 outside pass through stretch out rotating ring 100 after enter fixes sleeve 404, finally with movement Internal screw thread connection inside sleeve 403, and be more than internal thread segment, terminate at smooth section.

Feather key 406 can be slided mutually with guide groove 407, wherein 406 partial embedding of feather key is in moving sleeve 403 On, it to be fixedly connected, can partially be slided in guide groove 407, guide groove 407 is that 404 inner surface of fixes sleeve is arranged in Groove, guide groove 407 are parallel to fixes sleeve 404, and feather key 406 is caught in guide groove 407.

The present embodiment is by rotation adjusting screw rod 405, and under the action of threaded connection, moving sleeve 403 can be realized rotation Turn and horizontal direction moves left and right, then pass through the limit of feather key 406 and guide groove 407, so that moving sleeve 403 is only realized Horizontal direction moves back and forth, and then adjusts the movement in the horizontal direction of Magnetosensitive sensor array 500, so that magneto-dependent sensor battle array Column 500 are overlapped with the horizontal quadrature line of steel pipe 600 always always, the adjusting screw rod 405, fixes sleeve 404, moving sleeve 403 are overlapped with Magnetosensitive sensor array 500 with the horizontal quadrature line (A-B) of steel pipe 600；

It should be understood that guarantee Magnetosensitive sensor array 500 center line always with magnetization pole shoe 300 quadrature position It is overlapped, it may be assumed that the angle of the center line of a pair of magnetization pole shoe and Magnetosensitive sensor array is always 90 °, magnetizes pole with a pair in Fig. 1 The quadrature position of boots 300 is the horizontal quadrature line position of steel pipe 600.

The reciprocating motion in horizontal direction is realized by the rotary motion of screw thread and the limit of position-limit mechanism in the present embodiment, Adjustable range is big, adaptable, can be self-locking, and stability is high.

In the present embodiment, universal joint 408 is laterally setting, and one end of which is fixed on the bottom end of opening and closing arm 402, the other end is fixed Connecting spring push rod 411, the use of universal joint 408, predominantly the transmitting of adaptation power and adaptation turn to, and allow connected zero Angle between part changes in a certain range.

Spring base 409 in the present embodiment is the hollow cylindrical structure that inside is cavity, and left end is closed end, and right end is Open end, spring 412 can by open end inserting spring seat 409, the main function of spring base 409 be in order to accommodate spring 412, And with support arm 401 constitute link, therefore, the structure of spring base 409 be not limited to the present embodiment in structure, can also be it It is arranged in parallel at his structure, such as cavity for multiple upright bars and constitutes structure.

Spring(-supported) mount 410 is plank frame, and the upper end and moving sleeve 403 are fixed, and lower end and spring base 409 are fixed, Gu Determining mode can be welding, screwing etc., and certainly, spring(-supported) mount 410 can also can be realized the structure being fixedly connected for other, Such as connecting rod.

Spring push-rod 411 is cylindrical bar, and right end is fixedly connected with universal joint 408, and left end is fixedly connected with spring 412.

Wherein, spring 412 is in compressed state always, and spring 412 has outside elastic force, can push bullet always Spring push rod 411, spring push-rod 411 act on universal joint 408, so that vertical on the second braking surface 4021 on opening and closing arm 402 Face is bonded with the first braking surface 4011 and mutually restricts, and guarantees that Magnetosensitive sensor array 500 is in a stable state, conventional In the case of, maximum subtended angle state is between support arm 401 and opening and closing arm 402, i.e., most in detection 600 longitudinal defect of steel pipe Excellent position；

Meanwhile the angle between support arm 401 and opening and closing arm 402 can be shunk again, when 600 bending part of steel pipe or Person end reach detection position when, can squeeze to the left, at this point, the inclined surface on the second braking surface 4021 on opening and closing arm 402 with The fitting of first braking surface 4011, the angle between support arm 401 and opening and closing arm 402 become smaller, and Magnetosensitive sensor array 500 can be automatic It is pressed from 600 surface of steel pipe, reduces abrasion.

In the present embodiment, a kind of supporting mechanism of Magnetosensitive sensor array further includes magneto-dependent sensor adjuster 413, magnetosensitive The left end of the fixed Magnetosensitive sensor array 500 of sensor adjuster 413.Specifically, magneto-dependent sensor adjuster 413 is screw, It can finely tune 500 initial position of Magnetosensitive sensor array by rotary screw magneto-dependent sensor adjuster 413 and push against and not loosen.

The course of work of the present embodiment one:

As shown in Figs. 1-2, steel pipe 600 is at 100 central axis of rotating ring, and fine tuning Magnetosensitive sensor array 500 supports In 600 left and right sides of steel pipe, it is symmetrically distributed in the magnetization pole shoe 300 of about 600 steel pipe, the effect of steady permanent magnetic field of direct current is applied Onto steel pipe 600, on 600 outer surface of steel pipe of magnetization 300 quadrature position of pole shoe, fine tuning Magnetosensitive sensor array 500 is right Defect is detected, and the vertical plane on the second braking surface 4021 on opening and closing arm 402 is bonded simultaneously with the first braking surface 4011 at this time It mutually restricts, the angle between support arm 401 and opening and closing arm 402 is in maximum state；

When needing to detect the steel pipe 600 of different-diameter, rotate adjusting screw rod 405, be threadedly coupled and feather key 406 and Under the collective effect of the limit of guide groove 407,403 horizontal direction of moving sleeve is moved left and right, during this, magnetosensitive sensing Device array 500 is overlapped with the horizontal center line of steel pipe 600 always always；

When 600 bending part of steel pipe or end reach detection position, steel pipe 600 can squeeze magneto-dependent sensor battle array to the left Column 500, and then spring 412 is squeezed, opening and closing arm 402 can also be rotated around axis, so that the second braking surface on opening and closing arm 402 Inclined surface on 4021 is bonded with the first braking surface 4011, and the angle between support arm 401 and opening and closing arm 402 becomes smaller, and magnetosensitive passes Sensor array 500 can be pressed automatically from 600 surface of steel pipe, and abrasion is reduced.

Embodiment two:

The difference between this embodiment and the first embodiment lies in:

As shown in Figure 1, the Magnetosensitive sensor array 500 is equipped with protection inclined-plane 501 with the tangent one end of steel pipe 600.It protects The setting on shield inclined-plane 501 is enabled to when 600 end of steel pipe is arrived, and protection inclined-plane 501 is squeezed, and drives magneto-dependent sensor Array 500 shrinks, avoids, and Magnetosensitive sensor array 500 is avoided to be damaged, and protects inclined-plane 501 can be herein and is bonded in magnetosensitive The protection materials of 500 end of sensor array.

The course of work of the present embodiment two:

It is identical as the course of work of embodiment one, unlike, because protecting the setting on inclined-plane 501, when 600 bending section of steel pipe Divide or end reaches when detecting position, steel pipe 600 can protect inclined-plane 501, avoid squeezing Magnetosensitive sensor array 500, protection Magnetosensitive sensor array 500 is damaged, damages.

Embodiment three:

The difference between the present embodiment and the second embodiment lies in that:

As shown in Figure 1, on the basis of example 2, a kind of supporting mechanism of Magnetosensitive sensor array further includes interior fixation Ring 414, outer fixed ring 415, interior fixed ring 414 are fixed by screws in the inner surface of rotating ring 100, and fixes sleeve 404 is solid It is scheduled on the right side of interior fixed ring 414, outer fixed ring 415 is fixed by screws in the outer surface of rotating ring 100, and interior fixation Ring 414, outer fixed ring 415 are equipped with the hole passed through for adjusting screw rod 405；It further include limit plate 416, limit plate 416 is fixed on The left side of outer fixed ring 415, limit plate 416 are equipped with the hole passed through for adjusting screw rod 405.

Interior fixed ring 414 is the adapter realized fixes sleeve 404 and rotate circular arc 100, and outer fixed ring 415 is to realize limit The adapter of position plate and rotation circular arc 100.

Wherein, for being only limitted to be just passed through, diameter is equal to across the hole of adjusting screw rod 405 in limit plate 416 Or it is greater than the diameter of adjusting screw rod 405 slightly, limit plate 416 limits adjusting screw rod 405, guarantees to adjust spiral shell 405 center line of bar is overlapped with line A-B (the orthogonal horizontal line that A-B is steel pipe 600), and can only be rotated in situ, cannot radially be moved It is dynamic.

Because the surfaces externally and internally of rotating ring 100 is circular arc, therefore, the left side of interior fixed ring 414 is arc surface and rotation The medial surface of circular arc 100 is bonded, and left side is plane, and the right side of outer fixed ring 415 for arc surface and rotates the outer of circular arc 100 Side fitting, left side is plane, in addition to this, does not limit the concrete shape of interior fixed ring 414, outer fixed ring 415.

It is laggard that adjusting screw rod 405 sequentially passes through limit plate 416, outer fixed ring 415, rotating ring 100, interior fixed ring 414 Enter fixes sleeve 404, and then is threadedly coupled with moving sleeve 403.

The course of work of the present embodiment three is identical as implementing two.

As shown in Fig. 2, in conjunction with Fig. 1, the utility model also provides a kind of supporting mechanism using Magnetosensitive sensor array Leakage magnetic detection device, the leakage magnetic detection device include rotating ring 100, magnetizer 200, magnetization pole shoe 300, supporting mechanism 400, Magnetosensitive sensor array 500；Steel pipe 600 is overlapped with the central axis of rotating ring 100, and the magnetizer 200 is along steel pipe 600 horizontal quadrature face (A-B) is symmetrically installed on the inner surface of rotating ring 100, and the magnetization pole shoe 300 is along steel pipe 600 horizontal quadrature face is symmetrically installed on magnetizer 200 on the face of steel pipe 600, and magnetizer 200, magnetization pole shoe 300 Perpendicular quadrature face along steel pipe 600 is symmetrical；Magnetosensitive sensor array 500 is overlapped with the quadrature position of magnetization pole shoe 300 always.

As shown in Fig. 2, being illustrated by taking the supporting mechanism 400 in left side in Fig. 2 as an example in figure, the Magnetosensitive sensor array 500 left end is mounted on the right end of supporting mechanism 400, and the left end of supporting mechanism 400 is fixed on rotating ring 100, and magnetosensitive passes The right end of sensor array 500 and steel pipe 600 are tangent, and the horizontal centre of the center line of Magnetosensitive sensor array 500 and steel pipe 600 Line is overlapped always.

Wherein, the supporting mechanism 400, Magnetosensitive sensor array 500 are two, are symmetrically installed on hanging down for steel pipe 600 The two sides of straight normal surface, are arranged two Magnetosensitive sensor arrays 500 to realize that inspection can be realized in two test points, a test point It surveys, but the setting of two symmetrical test points can increase the accuracy and accuracy of detection, and speed can be will test and improve one Times.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of supporting mechanism of Magnetosensitive sensor array is applied on steel pipe longitudinal defect leakage magnetic detection device, feature exists In the supporting mechanism includes support arm, opening and closing arm, moving sleeve, fixes sleeve, adjusting screw rod, guiding mechanism；The opening and closing What one end of arm can rotate is connected to one end of support arm, and the fixed Magnetosensitive sensor array in the middle part of the opening and closing arm is mobile Sleeve is socketed in inside fixes sleeve by what guiding mechanism can slide, and one end of fixes sleeve is fixed on leakage magnetic detection device On, internal screw thread is equipped with inside the moving sleeve, one end of adjusting screw rod is equipped with external screw thread, and the adjusting screw rod passes through rotational circle It is connect after ring at the internal screw thread of moving sleeve, one end of Magnetosensitive sensor array and steel pipe are tangent, the adjusting screw rod, fixation Sleeve, quill, the center line of Magnetosensitive sensor array and the magnetization pole shoe on steel pipe longitudinal defect leakage magnetic detection device Quadrature position is overlapped always.

2. the supporting mechanism of Magnetosensitive sensor array according to claim 1, which is characterized in that the guiding mechanism includes The feather key and guide groove that can mutually slide, for feather key partial embedding on moving sleeve, guide groove is to be arranged in fixing sleeve The groove of tube inner surface, guide groove are parallel to fixes sleeve, and feather key is caught in guide groove.

3. the supporting mechanism of Magnetosensitive sensor array according to claim 1, which is characterized in that the supporting mechanism also wraps Include universal joint, spring assembly；One end of universal joint is fixedly mounted in the other end of the opening and closing arm, and the other end of the universal joint connects Spring assembly is connect, spring assembly is connected to one end of moving sleeve.

4. the supporting mechanism of Magnetosensitive sensor array according to claim 3, which is characterized in that the spring assembly includes Spring base, spring(-supported) mount, spring push-rod, spring, the spring are placed in inside spring base, and one end of spring(-supported) mount is fixed on spring base The other end of one end, spring(-supported) mount is fixed on moving sleeve, one end connecting spring of the spring push-rod, and other end connection is universal Section.

5. the supporting mechanism of Magnetosensitive sensor array according to claim 1, which is characterized in that the support arm is equipped with First braking surface, the first braking surface are vertical plane, and the opening and closing arm is equipped with the second braking surface, and the second braking surface includes vertical plane And inclined surface, the first braking surface are overlapped with the second braking surface, when being overlapped at the first braking surface and the vertical plane of the second braking surface, Angle between support arm and opening and closing arm is maximum.

6. the supporting mechanism of Magnetosensitive sensor array according to claim 1, which is characterized in that further include magneto-dependent sensor Adjuster, magneto-dependent sensor adjuster are fixed on Magnetosensitive sensor array.

7. the supporting mechanism of Magnetosensitive sensor array according to claim 1, which is characterized in that the magneto-dependent sensor battle array Column are equipped with protection inclined-plane with the tangent one end of steel pipe.

8. the supporting mechanism of Magnetosensitive sensor array according to claim 1, which is characterized in that further include interior fixed ring, Outer fixed ring, interior fixed ring are fixed by screws in the inner surface of rotating ring, and fixes sleeve is fixed on the side of interior fixed ring, Outer fixed ring is fixed by screws in the outer surface of rotating ring, and interior fixed ring, outer fixed ring are equipped with and wear for adjusting screw rod The hole crossed；It further include limit plate, limit plate is fixed on the side of outer fixed ring, and limit plate, which is equipped with, is used for what adjusting screw rod passed through Hole.

9. steel pipe longitudinal defect leakage magnetic detection device, the steel pipe longitudinal defect leakage magnetic detection device includes rotating ring, magnetization Device, magnetization pole shoe, supporting mechanism, Magnetosensitive sensor array；It is characterized in that, steel pipe is overlapped with the central axis of rotating ring, The magnetizer is along the inner surface that the horizontal quadrature face of steel pipe is symmetrically installed on rotating ring, and the magnetization pole shoe is along steel pipe Horizontal quadrature face be symmetrically installed on magnetizer on the face of steel pipe, and magnetizer, magnetization pole shoe along steel pipe it is vertical just Cross surface is symmetrical, and what the Magnetosensitive sensor array can be adjusted is mounted on one end of supporting mechanism, and the other end of supporting mechanism is solid It is scheduled on rotating ring, one end of Magnetosensitive sensor array and steel pipe are tangent, and the center line of Magnetosensitive sensor array and magnetization The quadrature position of pole shoe is overlapped always, and the supporting mechanism is supporting mechanism described in claim 1.

10. steel pipe longitudinal defect leakage magnetic detection device according to claim 9, which is characterized in that the supporting mechanism, magnetic Dependent sensor array is two, is symmetrically installed on the two sides in the perpendicular quadrature face of steel pipe.