CN212622390U - Defect detection device for planar member - Google Patents

Abstract

The utility model provides a defect detecting device of plane component, include: the magnetic information sensor is arranged in the shell, and the environment magnetic field generating structure is arranged in the shell; the first side surface of the shell is provided with a detection plane matched with the surface of the planar member, the environment magnetic field generating structure is positioned on the second side surface of the shell, and the second side surface is parallel to the first side surface; the magnetic information sensor comprises a butterfly body structure and two groups of butterfly wing structures, wherein the butterfly body structure comprises a long-strip-shaped hollow framework and a butterfly body coil wound on the outer surface of the hollow framework, and each group of butterfly wing structures comprises N butterfly wing rings capable of conducting magnetism; the hollow framework is provided with a hollow through hole penetrating through two ends of the hollow framework; the first end of each butterfly wing ring penetrates into the hollow through hole from the first end of the hollow through hole, and the second end of each butterfly wing ring penetrates into the hollow through hole from the second end of the hollow through hole.

Description

Defect detection device for planar member

Technical Field

The utility model relates to a metal component detects the field, especially relates to a defect detecting device of plane component.

Background

Planar member, understood to be: at least part of the surface of the component is a plane or a cambered surface with a small radian, and meanwhile, the material of the component has certain magnetic conductivity (such as good magnetic conductivity), such as carbon steel, carbon alloy steel and the like, and the component can be a planar metal component. In a specific application scenario, the planar member may, for example: welding and splicing shells of ships and large tank towers, various box-shaped container bodies, petrochemical pipelines and the like. Such a planar member has been highly regarded for quality assurance in the manufacturing process and safety evaluation in the use process.

In the prior art, the adopted detection device is usually realized by adopting magnetic powder, ultrasonic waves, rays and other modes, however, the detection device usually brings the limitations of heavier equipment, complex process, high operation requirement, time consumption, power consumption and the like, and can not meet the detection requirement of high speed and high efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model provides a defect detecting device of plane component to solve the problem that can't satisfy the high efficiency ground detection demand.

According to the utility model discloses an aspect provides a defect detecting device of plane component, include: the magnetic information sensor is arranged in the shell, and the environment magnetic field generating structure is arranged in the shell; the first side surface of the shell is provided with a detection plane matched with the surface of the planar member, the environment magnetic field generating structure is positioned on the second side surface of the shell, and the second side surface is parallel to the first side surface;

the magnetic information sensor comprises a butterfly body structure and two groups of butterfly wing structures, wherein the butterfly body structure comprises a long-strip-shaped hollow framework and a butterfly body coil wound on the outer surface of the hollow framework, and each group of butterfly wing structures comprises N butterfly wing rings capable of conducting magnetism; wherein N is an integer greater than or equal to 1;

the hollow framework is provided with a hollow through hole penetrating through two ends of the hollow framework; the first end of each butterfly wing ring penetrates into the hollow through hole from the first end of the hollow through hole, and the second end of each butterfly wing ring penetrates into the hollow through hole from the second end of the hollow through hole.

Optionally, the ambient magnetic field generating structure includes a core and an excitation coil wound outside the core.

Optionally, the core is curved, the centers of curvature of the portions of the core are located on the opposite side of the core from the detection plane, and the end surfaces of the core are parallel to the detection plane.

Optionally, the material of the butterfly wing structure is a nanocrystalline band material.

Optionally, the defect detecting apparatus for a planar member further includes a handle, the handle is fixedly connected to the second side surface of the housing, and the environment magnetic field generating structure is disposed in the handle.

Optionally, the annular edge of the wing ring is parallel to the detection plane.

Optionally, the detection plane is further provided with at least one of: wear-resisting liner, universal wheel.

Optionally, the defect detection device for the planar member further includes a circuit board, the circuit board is provided with a working circuit, the housing is internally provided with a sensor hole and a main board bin, the magnetic information sensor is arranged in the sensor hole, the circuit board is arranged in the main board bin, and the circuit board is electrically connected with the magnetic information sensor and the environmental magnetic field generation structure through an electric line.

Optionally, the housing is provided with a communication interface, and the communication interface is electrically connected to the operating circuit through an electric line.

Optionally, the defect detecting device for the planar member is characterized by further comprising a battery, a battery compartment is further arranged in the housing, the battery is arranged in the battery compartment, and the battery is electrically connected with the working circuit through an electric line.

The utility model provides an among the defect detection device of plane component, configured environment magnetic field and produced structure and magnetism information sensor, and then, because the first side of casing have with plane component surface assorted detection plane, environment magnetic field produces the structure and is located the second side of casing, when produced environment magnetic field acts on plane component, the magnetic flux that the magnetism information sensor detectable in the casing leaks is flat component, and then, magnetism information sensor's testing result can be used to as defect detection's judgement foundation, compares in the means that utilize modes such as magnetic, ultrasonic wave and ray to detect, based on the utility model discloses a hardware structure need not complicated operation during the detection, and then, can be favorable to simplifying the detection flow, improves detection efficiency, satisfies high efficiency's detection demand.

Furthermore, the utility model provides a sensor has adopted butterfly wing structure and butterfly body structure, and wherein, the magnetic flux of the electromagnetic field of butterfly body structure can be guided by the butterfly wing ring, and then, and the external magnetic field that a plurality of directions got into the butterfly wing ring all can be detected by magnetic information sensor, has richened information acquisition's direction, and then is favorable to improving information acquisition's integrality and accuracy. Meanwhile, the power loss caused by the heating of the 'eddy current' can be reduced or eliminated due to the lower magnetic resistance. In addition, the absorption of the electromagnetic field by the butterfly wing ring can be beneficial to reducing or eliminating the magnetic flux of each point outside the sensor.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a first schematic structural diagram of a defect detecting apparatus for a planar member according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a defect detection apparatus for a planar member according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a defect detecting apparatus for a planar member according to an embodiment of the present invention;

fig. 4 is a first schematic structural diagram of a magnetic information sensor according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a magnetic information sensor according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a magnetic information sensor according to an embodiment of the present invention;

fig. 7 is a fourth schematic structural diagram of the magnetic information sensor according to an embodiment of the present invention.

Description of reference numerals:

1-a magnetic information sensor;

11-a butterfly wing structure;

111-a butterfly wing ring;

1111-first access;

1112-a second access;

1113-curve section;

12-a butterfly structure;

121-hollow framework;

122-a butterfly coil;

1221-start thread end;

1222-a knot head;

123-a hollow through hole;

13-a central magnetically permeable structure;

2-an ambient magnetic field generating structure;

21-a core body;

22-a field coil;

3-a shell;

31-detection plane;

32-a second side;

33-sensor pocket;

34-a mainboard bin;

35-a battery compartment;

4-a planar member;

5-a circuit main board;

6-a battery;

7-a handle;

8-wear resistant liner.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Referring to fig. 1 and 3, the defect detecting apparatus for a planar member includes: the magnetic information sensor comprises a shell 3, a magnetic information sensor 1 arranged in the shell 3, and an environmental magnetic field generating structure 2.

The first side of the housing 3 has a detection plane 31 matching the surface of the planar member, the ambient magnetic field generating structure is located on the second side 32 of the housing, and the second side 31 is parallel to the first side.

The ambient magnetic field generating structure 2 is understood to be any structure capable of generating an ambient magnetic field, and the ambient magnetic field is understood to be any magnetic field capable of acting on the surface to be measured of the planar member 4.

The defects therein may for example include: surface cracks, rust corrosion pits, near-surface cracks, interlayer bubbles, and the like, and any defect in which the physical form of the surface layer or the near-surface layer of the planar member changes may be a defect to be detected.

Wherein, if the surface to be measured is not defective: the magnetic flux of the ambient magnetic field can be guided by the planar member 4 without leakage, whereas if the surface to be measured leaks: the magnet of the ambient magnetic field leaks, and the magnetic information sensor 1 can acquire the magnetic information of the leaked magnetic field part to obtain the relevant information capable of representing the magnetic information.

Therefore, in the above scheme, a "magnetic information transceiving space" may be locally constructed on the plane of the detected object, and it is determined whether a material (quality) defect or a geometric variation exists locally on the plane-shaped metal.

Therefore, based on the utility model discloses detection device, because the first side of casing have with the planar member surface assorted detection plane, the environmental magnetic field produces the structure and is located the second side of casing, when produced environmental magnetic field acts on planar member, the magnetic flux that the magnetic information sensor detectable in the casing leaks planar member, and then, magnetic information sensor's testing result can be used to as defect detection's judgement foundation, compares in the means that mode such as utilizing magnetic, ultrasonic wave and ray detected, based on the hardware structure of the embodiment of the utility model, need not complicated operation during the detection, and then, can be favorable to simplifying the detection flow, improve detection efficiency, satisfy high efficiency's detection demand.

Furthermore, based on the utility model discloses the detection principle also can need not the intervention of large size heavy equipment, and defect detecting device can be convenient for realize handheld, has further reduced the operation degree of difficulty that detects, is further convenient for realize high efficiency's detection, simultaneously, still can richen the application scene of device.

In an application scene, the quality management efficiency of the planar member product can be improved, and the workload and the difficulty of quality inspection of the product can be reduced. Compare and say, boats and ships and large-scale tank tower weld the manufacturing terminal quality inspection of piecing together planar metal component products such as casing, often face the operating condition such as the long length of being examined of the area of being examined, the embodiment of the utility model provides a defect detecting device can be used to carry out the quality and examine initially, confirms the quality problem point or the position of being examined the product, provides the basis for further reinspection or other dispositions.

In another kind of application scenario, planar component is during the labour, still can bear the extrusion frequently and shake the etching of load or corrosive medium, and the easy emergence accident is long-pending in the future to the potential safety hazard, uses the utility model discloses when the defect detecting device that the embodiment relates to, can be in complicated operating mode environment, quick, convenient realization is to the detection inspection of target safety state, for the component in good time maintains the maintenance or the maintenance change provides the data foundation, avoids proruption catastrophic event to take place.

In one embodiment, referring to fig. 1 and fig. 3, the ambient magnetic field generating structure 2 includes a core 21 and an excitation coil 22 wound outside the core 21. In this configuration, when the exciting coil 22 is energized, the ambient magnetic field generating structure 2 can generate an ambient magnetic field to the outside.

Wherein the core 21 may be curved with the center of curvature of each portion of the core on the opposite side of the core from the detection plane 31, i.e.: the curved shape thereof can be regarded as the core 21 having both ends curved toward the detection plane. Further, the end face of the core body 21 may be parallel to the detection plane 31.

In a specific implementation, the magnetic information sensor 1 may be located at a side of the curved core 21 opposite to the detection plane 31 and at an intermediate position, that is, the magnetic information sensor 1 may be located at an intermediate position inside the curve of the ambient magnetic field generating structure 2.

It can be seen that the main body of the ambient magnetic field generating structure 2 is a solenoid coil (i.e. an excitation coil 22) wound by N turns of conducting wires, and a nano amorphous material is filled in the solenoid coil to form an iron core (i.e. a core body 21), and further, the ambient magnetic field generating structure 2 can be used as a semi-regressive magnetic flux guide path, and the two ends of the magnetic flux guide path are bent in the same direction to enable the end plane to be parallel to the surface of the object.

In the embodiment of the present invention, please refer to fig. 4 to fig. 7, the magnetic information sensor 1 includes a butterfly body structure 12 and two sets of butterfly wing structures 11, the butterfly body structure 12 includes a strip-shaped hollow frame 121 and a butterfly body coil 122 wound on the outer surface of the hollow frame 121, and each set of butterfly wing structures 12 includes N butterfly wing rings 111 capable of conducting magnetic energy; wherein N is an integer greater than or equal to 1.

The hollow frame 121 is provided with a hollow through hole 123 penetrating through both ends of the hollow frame 121; the first end of each wing ring 111 penetrates into the hollow through hole 123 from the first end of the hollow through hole 123, and the second end of each wing ring 111 penetrates into the hollow through hole 123 from the second end of the hollow through hole 123.

Furthermore, the butterfly structure 12 can generate a corresponding electromagnetic field (e.g., an alternating electromagnetic field) when a power source is input to the butterfly coil 122, and the magnetic flux of the electromagnetic field can be guided by the butterfly ring.

Since the hollow frame 121 may be used for winding a coil and further has a hollow through hole 123, it may also be understood as a coil core tube, and the cross-sectional shape of the outer wall and the cross-sectional shape of the inner wall may be the same, for example, as shown in fig. 6 and 7, the hollow frame may be a rectangular polygon, or in other examples, not shown, the hollow frame may be a circle or other regular or irregular figure, and the desired shape may be arbitrarily selected according to the actual requirement of the product.

The coil may be formed by winding any conductive material, and in a specific implementation process, the coil may be a single coil, and taking fig. 4 and fig. 5 as an example, the start end 1221 and the tie end 1222 of the butterfly coil 122 are both located at the same end of the hollow frame 121.

In addition, the position of butterfly wing structure for the butterfly body structure can be fixed with arbitrary mode, has only illustrated its relative position relation in the picture, can realize the structure fixed means of this relative position relation wantonly, all can be applied to the embodiment of the utility model discloses, for example, can set up inside fixed knot structure in cavity through-hole 123, and then butterfly wing structure 11 fixed connection this fixed connection structure, for example again, also can set up outside fixed knot structure outside hollow framework 121, and then, hollow framework 121 and this outside fixed knot of the equal fixed connection of butterfly wing structure 11 construct.

The material of the butterfly wing structure is a material with magnetic resistance smaller than a preset value, and the material can also be understood as a material with certain magnetic conductivity; regardless of the material used, it is only necessary to be able to guide the magnetic flux of the electromagnetic field to a certain extent without departing from the scope of the embodiments of the present invention.

Because the magnetic resistance of butterfly wing structure is lower, and the both ends of butterfly wing ring can penetrate the butterfly body structure from hollow structure's both ends, so, the magnetic flux of the electromagnetic field of butterfly body structure can be guided by the butterfly wing ring, and then, the external magnetic field that a plurality of directions got into the butterfly wing ring all can be detected by magnetic information sensor, has richened information acquisition's direction, and then is favorable to improving information acquisition's integrality and accuracy. Meanwhile, the power loss caused by the heating of the 'eddy current' can be reduced or eliminated due to the lower magnetic resistance. In addition, the absorption of the electromagnetic field by the butterfly wing ring can be beneficial to reducing or eliminating the magnetic flux of each point outside the sensor.

In one embodiment, the material of the wing structure may be soft magnetic material, and further, may be iron material, low carbon steel material, ferrite material, etc. In one preferred embodiment, a material of the nano-crystalline ribbon may be used.

After appropriate materials such as the material of the nanocrystalline strip are selected, the full absorption of the alternating electromagnetic field can be favorably ensured, so that the magnetic flux of each point outside the sensor is zero.

In addition, the problem of hysteresis in dynamic acquisition can be solved by adopting the material of the nanocrystalline strip, and the requirements of quantitative analysis and judgment decision of production and life big data in the modern society are met.

In one embodiment, referring to fig. 4 and 5, each wing ring 111 includes a first penetrating segment 1111, a second penetrating segment 1112, and a bending segment 1113.

The first penetrating segment 1111 is located in the hollow through hole 123 and at a first end of the hollow through hole 123, the second penetrating segment 1112 is located in the hollow through hole 123 and at a second end of the hollow through hole 123, the bending segment 1113 is located outside the hollow skeleton 121, the first penetrating segment 1111 is connected with the first end of the bending segment 1113, and the second penetrating segment 1112 is connected with the second end of the bending segment 1113; the curvature centers of the parts in the bending section 1113 are all on the side of the bending section 1113 opposite to the hollow skeleton 121, that is, the bending sections 1113 are all bent towards the hollow skeleton 121.

For the bending section 1113, in a preferred scheme, the bending shape of the bending section 1113 matches with, and further may be the same as or similar to, the shape of the magnetic induction line of the butterfly structure 12, and specifically, the shape may be the same as or similar to the magnetic induction line theoretically determined by the butterfly structure 12 or the magnetic induction line actually measured in a simulation mode, and meanwhile, since the magnetic induction line of the butterfly structure 12 satisfies the shape of the magnetic induction line of a general long-strip magnet, the bending shape of the bending section 1113 may also be determined according to the shape of the magnetic induction line of a general long-strip magnet, which is conventional and common in the art. The curved shape determined in any of the above-described modes does not depart from the scope of the above-described embodiments.

The butterfly wing ring with the structure can be beneficial to realizing the sufficient guidance and absorption of magnetic flux. Furthermore, the realization that the external magnetic flux is zero can be further ensured by combining the above structural form of the butterfly wing ring.

Further, for example, in fig. 5, the first access section 1111 and the second access section 1112 of the same wing ring 111 may be connected together, and for example, in fig. 4, the first access section 1111 and the second access section 1112 of the same wing ring 111 may not be connected together. In addition, in the not-shown scheme, even if one wing structure 11 only includes one wing ring 111, the first access section 1111 and the second access section 1112 may not be connected together.

Meanwhile, the number of wing rings 111 may be one as shown in fig. 5, may be two as shown in fig. 4, or may be three or more in a case not shown.

If the above mentioned N is greater than or equal to 2, i.e. the number of wing loops 111 in a single wing structure 11 is greater than or equal to 2, then: the length of different butterfly wing rings 111 in same butterfly wing structure is in proper order increasing progressively, wherein:

the head end of the first butterfly wing ring 111 is fixedly arranged in the hollow through hole 123, and the tail end of the last butterfly wing ring 111 is also fixedly arranged in the hollow through hole 123; in addition to the first wing ring 111, the head end of each wing ring 111 is fixedly connected to the tail end of the previous wing ring 111, and each wing ring 111 is located outside the previous wing ring 111 (for example, the first access section 1111 of each wing ring 111 is fixedly connected to the second access section 1112 of the previous wing ring 111, and the curved section 1113, the first access section 1111, and the second access section 1112 of each wing ring 111 are located outside the curved section 1113, the first access section 1111, and the second access section 1112 of the previous wing ring 111).

The inner and outer sides are understood as: the side closer to the side wall of the hollow frame 121 is the inside, and the side farther from the side wall of the hollow frame 121 is the outside.

Meanwhile, the inner side and the outer side only represent the relative position relationship between the inner side and the outer side, each butterfly wing ring can be distributed based on the same two-dimensional direction as shown in fig. 6 (namely, the annular edges of the same sides of the butterfly wing rings are coplanar), further, under the overlooking angle of fig. 6, only the butterfly wing ring at the outermost side can be seen, and each butterfly wing ring can also be distributed based on the three-dimensional direction as shown in fig. 7 (namely, the annular edges of the same sides of at least two butterfly wing rings are not coplanar, and a certain acute included angle can be formed between different butterfly wing rings of the same butterfly wing structure), further, under the overlooking angle shown in fig. 7, different butterfly wing rings can be seen.

Further, taking fig. 4 and 5 as an example, the first access section 1111 and the second access section 1112 may respectively extend to the middle position of the hollow through hole 123 along the length direction.

In one embodiment, if the wing rings are distributed in the same two-dimensional direction, the annular edge of the wing ring 111 is parallel to the detection plane, and the wing plane may be parallel to the surface of the object to be detected.

In one embodiment, the two sets of wing structures 11 may be symmetrical with respect to the longitudinal section of the hollow frame 121. The longitudinal section can be, for example, the longitudinal section P shown in fig. 6 and 7, which is understood to be a section through the geometric center line of the hollow frame 121. If the cross section of the inner wall and the outer wall of the hollow frame 121 is rectangular, the longitudinal section P may be a longitudinal section passing through a center line of a pair of long sides of the rectangle.

In other embodiments, not shown, the two sets of wing structures 1 may be distributed asymmetrically or centrosymmetrically.

In one embodiment, referring to fig. 4 to 7, the magnetic information sensor 1 further includes a central magnetic conductive structure 13, the central magnetic conductive structure 13 is disposed through the central position of the hollow through hole 123, two ends of the central magnetic conductive structure 13 extend out of the hollow through hole 123 along the length direction of the hollow through hole 123, and magnetic fluxes at corresponding positions of the electromagnetic field (for example, an alternating electromagnetic field) can be further guided by the central magnetic conductive structure 3.

The material of the central magnetic conduction structure 13 can be understood by referring to the butterfly wing structure 11, and further, the material is a material with a magnetic resistance smaller than a preset value, and can also be understood as a material with a certain magnetic conduction capability; regardless of the material used, it is only necessary to be able to guide the magnetic flux of the electromagnetic field to a certain extent without departing from the scope of the embodiments of the present invention.

In one embodiment, the material of the central magnetic structure 13 may be soft magnetic material, and further, may be iron material, low carbon steel material, ferrite material, etc. In one preferred embodiment, the material of the central magnetic structure 13 may be a nanocrystalline strip material. The material of the central magnetic structure 13 may be the same as or different from that of the butterfly wing structure 11.

The shape of the central magnetic structure 13 may be arbitrary, and taking fig. 6 and 7 as examples, the cross section may be rectangular, and in other schemes not shown, the cross section may be other polygons, circles, other regular patterns, or other irregular patterns.

The central magnetic conduction structure in the butterfly body structure can induce the magnetic information in the zero region of the joint part of the two butterfly wings (which can be regarded as the spacing region between the two butterfly wing structures), eliminate the blind region of field effect magnetic information acquisition of the butterfly wings, and implement the omnidirectional coverage information data acquisition of target information.

When processing the detection result of the magnetic information sensor, for example:

acquiring electrical parameter change information when a power supply inputs the butterfly body coil and an external magnetic field (namely, a magnetic field leaked to the magnetic information sensor due to the defect of the planar member) enters the butterfly wing structure, so as to represent the magnetic information of the external magnetic field by utilizing the electrical parameter change information;

determining target detection information in a plurality of pieces of detection information according to a mapping relation between the magnetic information of the external magnetic field and the plurality of pieces of detection information; the detection information comprises preset material information and/or character variation information. The material information and/or the property variation information can be understood as information describing the surface defects.

The electrical parameter variation information referred to in the foregoing may for example comprise at least one of: voltage variation information of a power supply input to the butterfly body coil; frequency change information of a power supply input to the butterfly body coil; and the current change information of the induced current generated in the loop where the butterfly wing ring is positioned.

Wherein, the return circuit that the pteroid ring is located can be that the pteroid ring itself forms, also can be that the pteroid ring cooperates other conducting wires and forms, for example: each butterfly wing structure can form a loop through a conductive circuit, and the two butterfly wing structures can also form an integral loop through corresponding conductive circuits.

In addition to the above examples, since the magnetic information can be understood as information of the magnetic flux of the leaked magnetic field entering the sensor or information related thereto, any other electrical parameter information related to the change of the magnetic flux can be used as the electrical parameter change information.

Therefore, in the above scheme, the captured magnetic information can be quantitatively characterized in multiple parameters, and the omnidirectional magnetic information acquisition working mode of non-single electric quantity change analysis can be understood as a field effect mode.

Based on the electrical parameter variation information, the magnetic information can be selected by analyzing the multi-parameter magnetic information, and further, the magnetic information can be respectively defined according to the data quantization precision or the evolution requirement, and the definition result can be understood as the mapping relation related in the foregoing. The specific mapping may be determined based on a limited number of experiments, experience, or theoretical calculations, regardless of the mapping ultimately used, without departing from the scope of embodiments of the invention.

In addition, in the actual working process, the interference of information noise can be effectively avoided according to the actual working condition of the working environment, and the real reliability and the repeated stability of the collected information are kept and improved.

In one embodiment, referring to fig. 2, the detecting device further includes a handle 7, the handle 7 is not illustrated in fig. 1 and 3, the handle 7 is fixedly connected to the second side surface of the housing 3, and the environmental magnetic field generating structure 2 is disposed in the handle 7.

When the detection device is used, the palm is used for holding and optionally controlling to push the detection device to operate based on the handle 7, and full-coverage and reciprocating scanning connection overlapping type zero omission detection is implemented along the surface of the measured planar metal component.

Therefore, the handle 7 can be used for conveniently realizing the hand holding and the operation of the detection device. The handle 7 may be made of any material that does not adversely affect the detection of the magnetic information sensor and the generation of an environmental magnetic field.

In one embodiment, referring to fig. 3, the detection plane 32 may further include at least one of the following components: wear liners 8, universal wheels (not shown), and the like.

In one embodiment, referring to fig. 3, the defect detecting apparatus for a planar member further includes a circuit board 5, the circuit board 5 is provided with a working circuit, the housing 3 is provided with a sensor cavity 33 and a board compartment 34, the magnetic information sensor 1 is disposed in the sensor cavity 33, the circuit board 5 is disposed in the board compartment 34, and the circuit board 5 is electrically connected to the magnetic information sensor 1 and the ambient magnetic field generating structure 2 through an electrical line.

Further, the defect detecting device for the planar member may further include a battery 6, a battery compartment 35 is further disposed in the housing 3, the battery 6 is disposed in the battery compartment 35, and the battery 6 is electrically connected to the operating circuit through an electric line.

In the above scheme, the internal devices can be packaged and cured in a partitioned manner through the built-in and separated sensor hole, the main board bin, the battery bin and the like.

The working circuit can be used for supplying power to the butterfly body coil 22, so that magnetic excitation is realized, and the working circuit can support magnetic excitation intelligent power supply and mainboard power supply; specifically, the circuit main board and the working circuit thereon can be arranged near the side position of the magnetic information sensor, and the power supply adopts random equipment or external introduction. The working circuit can be configured with embedded software for respectively providing optimized pulse excitation current and analyzing, processing and collecting.

In a specific implementation process, the housing 3 is provided with a communication interface (not shown), the communication interface is electrically connected to the working circuit through an electric line, and the communication interface can be externally communicated. The communication interface may be, for example, a USB port, and based on embedded software, the working circuit may output raw probing information (e.g., the electrical parameter variation information mentioned above) and analysis processing results (e.g., the information mentioned above that can describe the defect) by using the communication interface.

The shell 3 can also be provided with an acousto-optic early warning component which can send out sound signals or light signals to the outside, and the working circuit can be electrically connected with the acousto-optic early warning component, so that the acousto-optic early warning component can be driven to send out early warning according to the analysis and processing result based on embedded software. For example, a corresponding warning may be issued after the analysis process determines certain defects.

In one embodiment, the housing 3 may include, for example, a chassis and an upper cover, and the chassis and the upper cover may be butted to form the housing 3, the chassis and the upper cover may be fixed in a sealed manner, and the handle 7 may be integrated with the chassis or the upper cover, so that the chassis, the upper cover, and the handle 7 may be completely sealed, waterproof, dustproof, and shockproof.

In addition, the housing 3 may be provided with a supporting framework, so that the supporting framework can be used to mount various structures of the housing 3, and can be used to distinguish different spaces, such as the sensor cavity, the battery compartment 35 and the main board compartment 34.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A defect detecting apparatus for a planar member, comprising: the magnetic information sensor is arranged in the shell, and the environment magnetic field generating structure is arranged in the shell; the first side surface of the shell is provided with a detection plane matched with the surface of the planar member, the environment magnetic field generating structure is positioned on the second side surface of the shell, and the second side surface is parallel to the first side surface;

the magnetic information sensor comprises a butterfly body structure and two groups of butterfly wing structures, wherein the butterfly body structure comprises a long-strip-shaped hollow framework and a butterfly body coil wound on the outer surface of the hollow framework, and each group of butterfly wing structures comprises N butterfly wing rings capable of conducting magnetism; wherein N is an integer greater than or equal to 1;

the hollow framework is provided with a hollow through hole penetrating through two ends of the hollow framework; the first end of each butterfly wing ring penetrates into the hollow through hole from the first end of the hollow through hole, and the second end of each butterfly wing ring penetrates into the hollow through hole from the second end of the hollow through hole.

2. The apparatus of claim 1, wherein the ambient magnetic field generating structure includes a core and an excitation coil wound outside the core.

3. A defect detecting apparatus for a planar member according to claim 2, wherein said core is curved, and the center of curvature of each portion of said core is on the opposite side of said core from said detection plane, and the end face of said core is parallel to said detection plane.

4. The apparatus of any one of claims 1 to 3, wherein the material of the wing structure is a nanocrystalline ribbon material.

5. The apparatus as claimed in any one of claims 1 to 3, further comprising a handle fixedly attached to the second side of the housing, wherein the ambient magnetic field generating structure is disposed within the handle.

6. A defect inspection apparatus for planar members as claimed in any one of claims 1 to 3, wherein the annular edge of the wing ring is parallel to the inspection plane.

7. A defect inspection apparatus for a planar member as claimed in any one of claims 1 to 3, wherein said inspection plane is further provided with at least one of: wear-resisting liner, universal wheel.

8. The apparatus as claimed in any one of claims 1 to 3, further comprising a circuit board, wherein the circuit board is provided with an operating circuit, the housing is provided with a sensor cavity and a board compartment, the magnetic information sensor is disposed in the sensor cavity, the circuit board is disposed in the board compartment, and the circuit board is electrically connected to the magnetic information sensor and the ambient magnetic field generating structure through an electrical line.

9. The apparatus of claim 8, wherein said housing is provided with a communication interface, said communication interface electrically connecting said working circuit through an electrical line.

10. The apparatus of claim 8, further comprising a battery, wherein a battery compartment is disposed in the housing, the battery compartment is disposed in the battery compartment, and the battery is electrically connected to the working circuit through an electrical line.

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