Eddy current device for welding seam detection

Abstract

The utility model relates to the technical field of eddy current probes, in particular to an eddy current device for welding seam detection, which comprises a detection probe, the detection probe comprises a cylindrical shell, an excitation coil and a detection coil are arranged in the cylindrical shell of the detection probe, and the excitation coil is arranged at the upper part of the detection coil. Through holes are formed in the middles of the excitation coil and the detection coil, an array framework and an array sliding block are arranged on the excitation coil and the detection coil, the array framework is fixedly connected with the array sliding block, a through hole is formed in the middle of the array sliding block, a coil is arranged in the middle of the array sliding block, and a protective outer cover is arranged at the bottom of the detection probe. And a flexible outer sleeve is arranged at the tail end of the detection probe. According to the utility model, the structure of the detection probe is improved, so that the weld joint detection resolution is improved in the use process, the angle of the flexible jacket is convenient to adjust in the use process, and better detection is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to eddy current probe technical field, especially in a kind of weld detection eddy current device. BACKGROUND

[0002] Eddy current probe is a kind of non-contact sensor based on eddy current testing technology, is widely used in metal material's nondestructive testing, surface defect detection, thickness measurement, material classification etc., eddy current probe generates eddy current on the surface of measured object, then detects the change of eddy current to obtain relevant information, when detecting metal plate weld, weld quality detection needs to use eddy current probe.

[0003] The utility model discloses a kind of double-frequency uniform eddy current probes with the announcement number CN209264632U, name is a kind of double-frequency uniform eddy current probe, including excitation element, detection element and outer fixed skeleton;The detection element is located below excitation element;Outer fixed skeleton is provided with excitation element installation cavity;The detection element installation hole is set in the bottom of excitation element installation cavity, and excitation element includes large excitation coil, small excitation coil and inner fixed skeleton;Small excitation coil is wound on inner fixed skeleton, large excitation coil is wound on small excitation coil, and excitation element is nestedly installed in the excitation element installation cavity of outer fixed skeleton, double-frequency uniform eddy current probe, resolution is high, sensitivity is good, detection speed is fast, and detection efficiency is high.

[0004] But the above-mentioned eddy current probe when detecting metal plate weld, eddy current probe itself lacks load leveling component, and the distance between eddy current probe and weld cannot be adjusted in use, which affects the detection range of detection probe for welds of different heights. UTILITY MODEL CONTENTS

[0005] The utility model solves the problems in the related art, and proposes a kind of weld detection eddy current device.

[0006] To solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] A kind of weld detection eddy current device, including detection probe, the detection probe includes cylindrical shell, and detection probe's cylindrical shell is provided with excitation coil and detection coil, and excitation coil is set in the upper portion of detection coil.

[0008] As preferred scheme, the middle part of the excitation coil and detection coil is provided with through hole, and array skeleton and array slider are set on the excitation coil and detection coil, and array skeleton is fixedly connected with array slider, and the middle of array slider is provided with through hole and coil.

[0009] As a preferred scheme, the bottom of the detection probe is provided with a protective cover, and the end of the detection probe is provided with a flexible sheath.

[0010] As a preferred scheme, the body shell is further provided with a support, one end surface of the body shell is horizontally fixed with an electric socket, a screw groove is vertically formed in the middle of the bottom surface of the body shell, installation grooves are vertically formed in both sides of the bottom surface of the body shell, the support is assembled in the installation grooves, the support comprises an installation frame box, the installation frame box is inserted and assembled in the installation grooves of the body shell, a screw post is vertically fixed on the inner top surface of the installation frame box, a screw cylinder is threadedly assembled on the screw post, a resilient plate is horizontally fixed on the bottom end of the screw cylinder, a support wheel is rotatably connected to the bottom surface of the resilient plate, and the detection probe is arranged in the screw groove.

[0011] As a preferred scheme, a plurality of resilient frames are vertically arranged in the installation grooves of the body shell and fixed on the vertical end surfaces in the installation grooves.

[0012] As a preferred scheme, pressure grooves are vertically formed in the vertical end surfaces of the outer side of the installation frame box and abut against the plurality of resilient frames.

[0013] As a preferred scheme, a bellows is vertically fixed on the top end of the detection probe and fixed on the inner top surface of the screw groove.

[0014] As a preferred scheme, a screw pipe is threadedly assembled in the screw groove and sleeved on the outer side of the detection probe.

[0015] As a preferred scheme, a resilient ring is fixed on the inner wall of the screw pipe, a plurality of through grooves are formed through the resilient ring, and clamping frames are horizontally fixed in the plurality of through grooves of the resilient ring.

[0016] As a preferred scheme, a level is horizontally fixed on the vertical end surface of the outer side of the body shell.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The structure of the detection probe is improved, so that the detection resolution of the weld is improved during use, the angle of the flexible sheath is adjusted conveniently during use, and better detection is achieved.

[0019] 2. The support wheel on the bottom support of the body shell is abutted against the surface of the detection weld in the structure of the shell, the screw cylinder is vertically moved on the screw post according to the reading of the level on the body shell, the support wheel is vertically adjusted in height, the body shell is kept horizontal, the detection probe on the bottom surface of the body shell is kept horizontal for detection of the weld, the support of the eddy current probe is used as a bearing and leveling component of the body shell, the distance between the detection probe and the weld can be adjusted according to the height of the weld during use of the eddy current probe, and the range of detection of the detection probe for different height welds is expanded. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the eddy current probe of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the eddy current probe of this utility model;

[0022] Figure 3 This is a schematic diagram of the array skeleton of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the outer shell of this utility model;

[0024] Figure 5 This is an exploded structural diagram of the outer shell of the present invention;

[0025] Figure 6 This is a schematic diagram of the outer shell of the machine body in a disassembled state in an embodiment of this utility model;

[0026] Figure 7 This is a structural schematic diagram of the support member of the outer shell of the machine body in the disassembled state in an embodiment of this utility model.

[0027] In the diagram: 1. Housing; 11. Power socket; 12. Screw groove; 13. Mounting groove; 14. Elastic frame; 15. Screw tube; 16. Elastic ring; 161. Clamping frame; 17. Corrugated pipe; 19. Level; 2. Support component; 21. Mounting frame box; 211. Pressure groove; 22. Stud; 23. Screw barrel; 24. Elastic plate; 25. Support roller; 3. Detection probe; 31. Excitation coil; 32. Detection coil; 33. Protective cover; 34. Array slider; 35. Array frame. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0029] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0030] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale of the various parts shown in the drawings. Techniques, methods, and apparatus known to those of ordinary skill are not discussed in detail because they would be understood that such techniques, methods, and apparatus are considered part of the art. In all examples shown and discussed herein, any specific values are to be interpreted as merely illustrative and not limiting. Thus, other examples of example embodiments can have different values. It is noted that like numbers and letters on the figures identify like parts throughout the several views, and thus, once an item is defined in one figure, it is not necessary to discuss it further in connection with other figures where it is understood that the item will be similarly constructed and function in the same manner.

[0031] In the description of the present application, it is to be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0032] For the purposes of the description, reference can be made to spatially relative terms, such as "above", "below", "upper", "lower", and the like, to describe the spatial relationship between various elements in the drawings. It is to be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, then a dependent element described as above or otherwise relative to the other element, is to be oriented below or otherwise relative to the other element. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first", "second", and the like, as used herein do not have any specific meaning and are used only to distinguish one element from another.

[0033] In addition, it should be noted that the use of "first", "second", and the like words to qualify parts, is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the utility model.

[0034] A kind of eddy current device for weld detection, including detection probe 3, the detection probe 3 includes cylindrical shell, and detection probe 3 is provided with excitation coil 31 and detection coil 32 in the cylindrical shell, and excitation coil 31 is arranged in the upper portion of detection coil 32, with reference to prior patent CN212964761U, wherein input sine alternating current in excitation coil, detection coil outputs induced voltage signal, when the measured piece is defect-free, the position of the measured piece below any two adjacent excitation coils induces secondary magnetic field in the direction opposite to the middle detection coil, even if the distance between detection probe and the measured piece changes, the total magnetic field of detection coil is always 0;When the measured piece has defect, the balance of induced magnetic field on detection coil under defect-free state is broken, the signal of detection coil changes at this time, can improve resolution in use process, to better detect the state of weld.

[0035] The middle part of excitation coil 31 and detection coil 32 is provided with a through hole, and array skeleton 35 and array slider 34 are arranged on excitation coil 31 and detection coil 32, and array skeleton 35 is fixedly connected with array slider 34, and the middle of array slider is provided with a through hole and a coil, the bottom of detection probe 3 is provided with protective cover 33, and the cylindrical shell of detection probe 3 is provided with flexible outer cover, and the flexible outer cover can be used to adjust the position of eddy current probe in use process, and the working angle of detection probe is adjusted.

[0036] As Figures 4 to 7As shown, a kind of weld detection eddy current device also includes machine body shell 1 and support 2, the top horizontal fixed power socket 11 of one end surface of machine body shell 1, and the vertical screw groove 12 of middle part of bottom surface of machine body shell 1 is set, and the installation groove 13 of both sides of bottom surface of machine body shell 1 is vertically set, and support 2 is assembled in installation groove 13, support 2 includes installation frame box 21, installation frame box 21 is inserted and assembled in the installation groove 13 of machine body shell 1, and the vertical fixed stud 22 is on the inside top surface of installation frame box 21, the threaded assembly screw drum 23 is on stud 22, and the horizontal fixed elastic plate 24 is at the bottom end of screw drum 23, and the horizontal rotary connection support wheel 25 is on the bottom surface of elastic plate 24, detection probe 3 is arranged in screw groove 12, and the horizontal instrument 19 is horizontally fixed on the vertical end surface of the outside of machine body shell 1, in use, according to the installation groove 13 of both sides of bottom surface of machine body shell 1, support 2 is inserted and assembled, installation frame box 21 in support 2 is inserted into the installation groove 13 of machine body shell 1, in use, the support wheel 25 on the bottom support 2 of machine body shell 1 is pressed on the surface of the detected weld, according to the reading of horizontal instrument 19 on machine body shell 1, screw drum 23 is vertically moved on stud 22, and support wheel 25 is vertically adjusted to support the height, and the height of machine body shell 1 is adjusted to keep horizontal, so that the detection probe 3 on the bottom surface of machine body shell 1 keeps horizontal to the weld detection, so that the support 2 of the vortex probe 3 itself is set as the load leveling member of machine body shell 1, and the vortex probe can adjust the distance between the detection probe and the weld according to the height of the weld in use, which expands the detection range of the detection probe for different height weld detection.

[0037] In one embodiment, as shown in Figure 6 and 7 A plurality of elastic frames 14 are vertically arranged in the installation groove 13 of machine body shell 1, and the vertical end surface of the inside of installation groove 13 is fixed, the vertical end surface of the outside of installation frame box 21 is vertically provided with pressure groove 211, and pressure groove 211 is arranged in pressure with a plurality of elastic frames 14, in use, installation frame box 21 is inserted into the installation groove 13 of machine body shell 1, pressure groove 211 extrudes a plurality of elastic frames 14 to deform, and the deformation force of a plurality of elastic frames 14 extrudes installation frame box 21 inserted into the installation groove 13 of machine body shell 1, which ensures that installation frame box 21 is installed stably in machine body shell 1.

[0038] In one embodiment, as shown in Figure 6 and 7As shown, the top end of the detection probe 3 is vertically fixed with a bellows 17, and the top end of the bellows 17 is fixed on the top surface inside a screw groove 12, a screw pipe 15 is threadedly assembled in the screw groove 12, and the screw pipe 15 is sleeved outside the detection probe 3, a elastic ring 16 is fixed on the inner wall of the screw pipe 15, a plurality of through grooves are formed through the elastic ring 16, and a clamping frame 161 is horizontally fixed in each of the through grooves of the elastic ring 16. In use, the screw pipe 15 is threadedly assembled in the screw groove 12 of the machine body shell 1, then the elastic ring 16 arranged inside the screw pipe 15 is pushed to clamp and extrude the detection probe 3 in the screw pipe 15 under the deformation force of the clamping frame 161, and in the later period, the screw pipe 15 is vertically moved in the screw groove 12 according to the detection requirement, and the detection probe 3 is vertically moved under the stretching of the bellows 17, so that the detection probe 3 can be vertically adjusted to adjust the distance between the detection probe and the weld according to the height of the weld in use, and the range of the detection probe 3 for detecting different height welds is expanded.

[0039] In the embodiment, the support wheel 25 on the bottom support 2 of the machine body shell 1 is abutted against the surface of the weld to be detected, the screw cylinder 23 is rotated to vertically move on the screw post 22 according to the reading of the level meter 19 on the machine body shell 1, the support wheel 25 is vertically adjusted to adjust the height of the support, the machine body shell 1 is adjusted to be kept horizontal, the detection probe 3 on the bottom surface of the machine body shell 1 is kept horizontal to detect the weld, so that the support 2 arranged on the eddy current probe 3 itself is used as the load leveling member of the machine body shell 1, the screw pipe 15 is threadedly assembled in the screw groove 12 of the machine body shell 1, then the elastic ring 16 arranged inside the screw pipe 15 is pushed to clamp and extrude the detection probe 3 in the screw pipe 15 under the deformation force of the clamping frame 161, and in the later period, the screw pipe 15 is vertically moved in the screw groove 12 according to the detection requirement, and the detection probe 3 is vertically moved under the stretching of the bellows 17.

[0040] The above is the preferred embodiment of the present application, and the person skilled in the art of the present application can also change and modify the above embodiment, therefore, the present application is not limited to the above specific embodiments, and any obvious improvement, replacement or modification made by the person skilled in the art on the basis of the present application belongs to the protection scope of the present application.

Claims

1. An eddy current device for weld seam detection, comprising a detection probe (3), characterized in that, The detection probe (3) comprises a cylindrical shell, and an excitation coil (31) and a detection coil (32) are arranged in the cylindrical shell of the detection probe (3), the excitation coil (31) is arranged at the upper portion of the detection coil (32), through holes are formed in the middle portions of the excitation coil (31) and the detection coil (32), and an array skeleton (35) and an array slider (34) are arranged on the excitation coil (31) and the detection coil (32), the array skeleton (35) is fixedly connected with the array slider (34), the middle portion of the array slider is provided with a through hole and a coil, the bottom of the detection probe (3) is provided with a protective cover (33), the cylindrical shell of the detection probe (3) is arranged as a flexible sleeve, and the detection probe (3) further comprises a machine body shell (1) and a supporting piece (2), one end surface of the machine body shell (1) is horizontally fixed with an electric socket (11), a screw groove (12) is vertically formed in the middle of the bottom surface of the machine body shell (1), mounting grooves (13) are vertically formed in the both sides of the bottom surface of the machine body shell (1), and the supporting piece (2) is assembled in the mounting grooves (13).

2. An eddy current device for weld seam inspection according to claim 1, characterized in that: A plurality of elastic frames (14) are vertically arranged in the mounting grooves (13) of the machine body shell (1), and the elastic frames (14) are fixed to the vertical end surfaces in the mounting grooves (13).

3. An eddy current device for detecting a weld according to claim 2, wherein: Pressure grooves (211) are vertically formed in the vertical end surfaces of the outer sides of the mounting frame boxes (21), and the pressure grooves (211) are in pressure abutment with the elastic frames (14).

4. An eddy current device for detecting a weld according to claim 3, wherein: A bellows (17) is vertically fixed to the top end of the detection probe (3), and the top end of the bellows (17) is fixed to the top inner surface of the screw groove (12).

5. An eddy current device for detecting a weld according to claim 4, wherein: A screw pipe (15) is threadedly assembled in the screw groove (12), and the screw pipe (15) is sleeved on the outer portion of the detection probe (3).

6. An eddy current device for detecting a weld according to claim 5, wherein: An elastic ring (16) is fixed to the inner wall of the screw pipe (15), a plurality of through grooves are formed in the elastic ring (16), and clamping frames (161) are horizontally fixed in the through grooves of the elastic ring (16).

7. An eddy current device for detecting a weld according to claim 6, wherein: A level (19) is horizontally fixed to the vertical end surface of the outer side of the machine body shell (1).

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