CN208833709U - A kind of eddy current probe and vortex detection device for metal pipe material - Google Patents

A kind of eddy current probe and vortex detection device for metal pipe material Download PDF

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Publication number
CN208833709U
CN208833709U CN201821510922.7U CN201821510922U CN208833709U CN 208833709 U CN208833709 U CN 208833709U CN 201821510922 U CN201821510922 U CN 201821510922U CN 208833709 U CN208833709 U CN 208833709U
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skeleton
drive assembly
eddy current
component
pick
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CN201821510922.7U
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Inventor
于军辉
王晓磊
李小影
李恒羽
岳强
王星华
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STATE NUCLEAR BAO TI ZIRCONIUM INDUSTRY Co
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STATE NUCLEAR BAO TI ZIRCONIUM INDUSTRY Co
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Abstract

A kind of eddy current probe and vortex detection device for metal pipe material, wherein the eddy current probe includes: main body framework (1), at least one Drive assembly (2) and at least a pair of of pickup component (3);It is provided in main body framework (1) and is located in through-hole with Drive assembly (2) one-to-one through-hole, Drive assembly (2);Component (3) are picked up to connect with the Drive assembly (2).The utility model both can detecte out the defect of plain cylindrical form metal pipe material, can be used for the detection for the special-shaped metal tube material that all cross sections are centrosymmetric, can accurately detect defect, and detection defect size, easy to operate, detection efficiency is high, high sensitivity.

Description

A kind of eddy current probe and vortex detection device for metal pipe material
Technical field
The utility model relates to metal pipe materials to examine field, in particular to a kind of eddy current probe and whirlpool for metal pipe material Flow detection device.
Background technique
Since zircaloy has excellent nuclearity energy, mechanical property and anticorrosive under the high temperature and high pressure environment of nuclear reactor Performance, so being widely used in nuclear reactor material.Zr-4 special section tubular product is the important materials reacted in pile component, it undertakes The normal guiding and buffer function of control rod in heap.The extension diameter section of Zr-4 special section tubular product, straight pipe and undergauge section quality are tight Ghost image ring control rod promotion and fall movement, it may occur however that cause core meltdown because reactor temperature is excessively high, cause core The risk of leakage, the serious living environment for influencing people.
During traditional Zr-4 special section tubular product production testing, tubing passes through the rolling of multi-pass extremely, oil removing, moves back The processes such as fire, pickling are produced to finished product tubing, and tubing directly carries out after ultrasonic inspection using molding procedure final production best friend Goods state finished product.Non-destructive ultrasonic and eddy-current test are no longer carried out during tubing ultrasonic inspection to the special section tubular product of delivery finished product state. In this process, tubing have passed through the expanding and molding cold working process of undergauge, inevitably may be in Zr-4 abnormal shape The defects of extension diameter section, straight pipe and the undergauge section of tubing generate hole shape, channel-shaped, uneven sheet and wall thickness dimension.
Currently, only being detected inside and outside Zr-4 special section tubular product finished product by manually visual, endoscope and air-gauge means The defect on surface, precision is low, and error is big.
Utility model content
The purpose of the utility model is to provide a kind of high-precision, the vortex of special-shaped metal tube material defect is detected to the 5th tea Probe.
To achieve the above object, the utility model provides a kind of eddy current probe for metal pipe material, wherein includes: Main body framework, at least one Drive assembly and at least a pair of of pickup component;It is provided in main body framework a pair of with Drive assembly one The through-hole answered, Drive assembly are located in the through-hole;Component is picked up to connect with Drive assembly.
Further, Drive assembly includes: excitation coil skeleton and excitation coil;Excitation coil is wound on excitation coil bone On frame.
Further, picking up component includes: pick-up winding skeleton and pick-up winding;Pick-up winding is wound on pick-up winding bone On frame.
Further, pick-up winding skeleton one end is provided with internal screw thread, and excitation coil skeleton both ends are provided with and internal screw thread Matched external screw thread;Pick-up winding skeleton is fixedly connected with excitation coil skeleton by internal screw thread and externally threaded cooperation.
Further, the section of main body framework is circle, and including first segment skeleton and second segment skeleton;First segment skeleton It is not identical with the radius of second segment skeleton.
Further, eddy current probe further includes protection component;Protection component is wrapped in Drive assembly and/or picks up outside component Portion.
Further, excitation coil skeleton being positioned radially along main body framework, and both ends stretch out main body framework and with pickup Coil rack connection.
Further, component is picked up to be at certain angle of inclination setting with Drive assembly and/or be vertically arranged;First segment skeleton It is obliquely installed and vertically disposed pickup component and Drive assembly with being respectively provided on second segment skeleton.
Further, component and the Drive assembly is picked up to be arranged in 8-12 degree.
The utility model also provides a kind of vortex detection device, wherein further includes that vortex is set including above-mentioned eddy current probe It is standby;Drive assembly and pickup component are connected to vortex equipment.
The beneficial effects of the utility model are:
(1) the eddy current probe structure of the utility model is simple, and Drive assembly provides steady weighing apparatus dynamic alternating magnetic field, picks up component When defective under Drive assembly both ends work one end pickup component in pairs, vortex is flowed around its Defect Edge, generates impedance Variation be picked component pickup, two pickups components will appear voltage difference, are exported with impedance manner, and being arranged can both examine in this way The defect of plain cylindrical form metal pipe material is measured, and then can be used for the special-shaped metal tube material that all cross sections are centrosymmetric Detection can accurately detect defect, and detection defect size with this, and easy to operate, detection efficiency is high, high sensitivity.
2) main body framework be divided into two sections of different skeletons of diameter can other than it can detecte the defect of common metal tubing Effectively to detect the defect of thickness difference special section tubular product.
3) when picking up component and metal pipe material is arranged in parallel, the defect of metal pipe material can be detected to greatest extent, Therefore pick up component and be at certain angle of inclination setting with Drive assembly and/or be vertically arranged, it both can detecte metal pipe material difference The defect of angle can also effectively detect extension diameter section, straight pipe and undergauge section in common metal tubing and special-shaped metal tube material On surfaces externally and internally the defects of hole shape, channel-shaped, uneven sheet and wall thickness dimension, the matter of special-shaped metal tube material can effectively ensure that Amount.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model eddy current probe;
Fig. 2 is the connection schematic diagram of the utility model vortex detection device.
Appended drawing reference:
1: main body framework;11: first segment skeleton;12: second segment skeleton 2: Drive assembly;201: the first Drive assemblies; 202: the second Drive assemblies;203: third Drive assembly;204: the four Drive assemblies;21: excitation coil skeleton;22: excitation line Circle;3: picking up component;Pick up component at 301: the first;Pick up component at 302: the second;303: third picks up component;304: the four ten Take component;31: pick-up winding skeleton;32: pick-up winding;4: protection component;5: probe rotating device;6: vortex equipment.
Specific embodiment
To make the objectives, technical solutions and advantages of the present invention clearer, With reference to embodiment And referring to attached drawing, the utility model is further described.It should be understood that these descriptions are merely illustrative, and do not really want Limit the scope of the utility model.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid not Necessarily obscure the concept of the utility model.
Embodiment 1
Fig. 1 is the structural schematic diagram of the utility model eddy current probe.
As shown in Figure 1, the eddy current probe for metal pipe material of the utility model, comprising: main body framework 1, at least one Drive assembly 2 and at least a pair of of pickup component 3;It is provided in main body framework 1 and the one-to-one through-hole of Drive assembly 2, excitation Component 2 is located in through-hole;Component 3 is picked up to connect with Drive assembly 2.When giving the alternating current of 2 steady of Drive assembly, excitation Component 2 can provide the alternating magnetic field of steady, and vortex can be generated on metal pipe material, and picking up component 3 can detecte metal tube The vortex of material, when metal pipe material surface or defective near surface, the distribution of the vortex of metal pipe material and intensity can generate change Change, the pickup component 3 of 2 one end of Drive assembly detects this variation, and the pickup component 3 of the other end of Drive assembly 2 detects Vortex it is unchanged, therefore the vortex that detects of the pickup component 3 at 2 both ends of Drive assembly generates difference, and it is detectable to export this difference To defect and the size of defect.
The utility model makes metal pipe material surface or near surface generate vortex by Drive assembly, and metal pipe material surface has scarce Vortex can generate variation when falling into, this variation is picked up by the pickup component of Drive assembly one end, pick up component with the other end and compare, Difference is generated, both can detecte out the defect of plain cylindrical form metal pipe material in this way, can be used for all cross sections in center The detection of symmetrical special-shaped metal tube material can accurately detect defect, and detection defect size, easy to operate, inspection with this Survey high-efficient, high sensitivity.
Specifically, each pair of both ends picked up component 3 and be symmetrically disposed on corresponding Drive assembly 2.
Preferably, each pair of pickup component 3 in the setting in a center of symmetry of the both ends of corresponding Drive assembly 2 or is mirrored into Setting, as long as being able to detect that the pickup component 3 of effective difference of each pair of vortex variation detected for picking up component 3 is arranged Mode is all within the protection scope of the present utility model.
Preferably, Drive assembly 2 includes excitation coil skeleton 21 and excitation coil 22;Excitation coil 22 is wound on excitation On coil rack 21.The shape of excitation coil skeleton 21 is rectangle, and excitation coil skeleton 21 can be prevented in the through-hole of main body framework 1 Middle rotational slide;21 both ends quadrangle of excitation coil skeleton is arc-shaped, can prevent 21 corner of excitation coil skeleton from scratching metal tube Material inner wall;21 impulse- free robustness of excitation coil skeleton, and have certain roughness, the close uniform winding of enameled wire can be made in excitation coil On skeleton 21, excitation coil 22 is formed.
Preferably, picking up component 3 includes pick-up winding skeleton 31 and pick-up winding 32;Pick-up winding 32 is wound on pickup On coil rack 31.The end of pick-up winding skeleton 31 is set as cambered surface, can prevent 31 corner of pick-up winding skeleton from scratching metal Pipe material inner wall.
Optionally, 31 one end of pick-up winding skeleton is provided with internal screw thread, and 21 both ends of excitation coil skeleton are provided with and pick up The matched external screw thread of 31 internal screw thread of coil rack;Pick-up winding skeleton 31 and excitation coil skeleton 21 pass through internal screw thread and external screw thread Cooperation be fixedly connected.It is convenient for changing pick-up winding skeleton 31 and excitation coil skeleton 21.
Preferably, the section of main body framework 1 is circle, and including first segment skeleton 11 and second segment skeleton 12;First segment The radius of skeleton 11 and second segment skeleton 12 is not identical.Main body framework 1 is divided into two sections of different skeletons of diameter, in addition to can detecte Outside the defect of common metal tubing, the defect of thickness difference special-shaped metal tube material can be effectively detected.
Optionally, eddy current probe further includes protection component 4, and protection component 4 is wrapped in Drive assembly 2 and/or picks up component Outside 3.Component 4 is protected preferably to protect resin glue, for protecting excitation coil 22 and/or pick-up winding 32, and to excitation line Circle 22 and/or pick-up winding 32 are fixed.
Optionally, being positioned radially along the main body framework 1 of excitation coil skeleton 21, and main body framework 1 is stretched out simultaneously in both ends It is connect with pick-up winding skeleton 31.
Preferably, component 3 is picked up to be at certain angle of inclination setting with Drive assembly 2 and/or be vertically arranged;First segment skeleton 11 and second segment skeleton 12 on be respectively provided with and be obliquely installed and vertically disposed pickup component 3 and Drive assembly 2.Drive assembly 2 There are four, respectively the first Drive assembly 201, the second Drive assembly 202, third Drive assembly 203 and the 4th Drive assembly 204, work phase is not interfere with each other;First Drive assembly 201 and the second Drive assembly 202 pass through the through-hole of first segment skeleton 11; Third Drive assembly 203 and the 4th Drive assembly 204 pass through the through-hole of second segment skeleton 12.It picks up there are four types of components 3, respectively Component 301, second, which is picked up, for first picks up component 302, third pickup component 303 and the 4th pickup component 304;First pickup group Part 301 and third are picked up component 303 and are set at an angle with the first Drive assembly 201 and third Drive assembly skeleton 203 respectively It sets, angular range is preferably 8-12 degree, and more preferably 10 degree;Second, which picks up component 302 and the 4th, picks up component 304 respectively with the Two Drive assemblies 202 and the 4th Drive assembly 204 are vertically arranged.It, can be with when picking up component 3 and metal pipe material and being arranged in parallel Detect the defect of metal pipe material to greatest extent, thus pick up component 2 and Drive assembly 3 be at certain angle of inclination setting and/or It is vertically arranged, both can detecte the defect of metal pipe material different angle, can also effectively detect common metal tubing and different Hole shape on extension diameter section, straight pipe and undergauge section surfaces externally and internally, channel-shaped, sheet and wall thickness dimension are uneven etc. in type metal pipe material Defect can effectively ensure that the quality of special-shaped metal tube material.
Optionally, 1 one end of main body framework of above-mentioned eddy current probe axially connects a probe rotating device 5, above-mentioned for making Eddy current probe at the uniform velocity rotates in metal pipe material, the sphere of action of rotation speed and Drive assembly 2, the pickup model for picking up component 3 It encloses related with travel speed of the eddy current probe in metal pipe material.
Embodiment 2
The connection schematic diagram of Fig. 2 the utility model vortex detection device.
Such as Fig. 1 and Fig. 2, a kind of vortex detection device is used for metal tube including one kind that the utility model embodiment 1 is introduced The eddy current probe of material further includes vortex equipment;Drive assembly 2 and pickup component 3 are connected to vortex equipment.
Optionally, the excitation coil 22 of probe connect vortex equipment by aviation High-frequency plug with the connector of pick-up winding 32 6.Compared with ordinary plug, aviation High-frequency plug can provide higher frequency variation, and the accuracy of production is high, and exterior material has Stronger tolerance can effectively guarantee more stable work of popping one's head in.
It is illustrated below with reference to by taking the eddy current probe production method of certain specification Zr special section tubular product as an example.
Go out the main body framework popped one's head in using nylon rod vehicle on lathe.
To drilling in main body framework on drilling machine.
The secondary various sizes of pick-up winding skeleton of production of nylon plate 4 is used in cutting on line equipment.
4 different size excitation coil skeletons are made using nylon rod on lathe.
Inclined drill is carried out in pick-up winding skeleton, bore position should match the external screw thread of excitation coil skeleton.It is picking up Vertical drilling is carried out in line taking ring framework, bore position should match the external screw thread of excitation coil skeleton.
It is wound on the enameled wire of Φ 0.4~0.8mm specification is close in a helical pattern on excitation coil skeleton.
It is wound on the enameled wire of Φ 0.05~0.2mm specification is close in a helical pattern on pick-up winding skeleton.Coiling is completed It is measured afterwards using inductance of the electric inductance measuring-testing instrument to every group of pick-up winding, it is ensured that every group of difference in inductance should be less than 1uH.
It is respectively charged into above-mentioned around the excitation coil skeleton and pick-up winding that make to main body framework.First every group is motivated Then every group of pick-up winding is accessed milivoltmeter, measures every group respectively and pick up by the lead parallel connection incoming audio signal generator of coil The voltage deviation of line taking circle, it is ensured that every group of coil voltage is less than 10 millivolts.If being unsatisfactory for requiring, by adjusting pick-up winding with The distance between excitation coil increases or reduces the number of turns for picking up enameled wire, it is ensured that voltage meets above-mentioned requirements.
The fixed pick-up winding of probe protection resin glue and excitation coil.It is wrapped on pick-up winding and excitation coil surface respectively Cover one layer of protection resin glue.
Whirlpool is carried out using wired or wireless mode connection probe and vortex equipment, and using Zr-4 special section tubular product standard pipe Stream is debugged and gropes corresponding technological parameter.
Obviously, the embodiments are a part of the embodiments of the present invention rather than all of the embodiments.Based on this Embodiment in utility model, it is obtained by those of ordinary skill in the art without making creative efforts it is all its His embodiment, fall within the protection scope of the utility model.
In the description of the present invention, it should be noted that term " first " and " second " are used for description purposes only, and It cannot be understood as indicating or implying relative importance.
The utility model is intended to protect a kind of eddy current probe for metal pipe material and vortex detection device, including main body bone Frame, Drive assembly pick up component and vortex equipment composition is allowed to generate steady alternating current by being powered to Drive assembly, into And steady alternating magnetic field is generated, so that metal pipe material inner surface and near surface is generated vortex, when metal pipe material inner surface and near surface When defective, vortex is flowed around its Defect Edge, and the variation for generating impedance is picked component pickup, and two pickup components can go out Existing voltage difference, is exported with impedance manner, is arranged the defect that both can detecte out plain cylindrical form metal pipe material in this way, and then can be with For the detection for the special-shaped metal tube material that all cross sections are centrosymmetric, defect, and detection can be detected accurately with this Defect size.By the way that main body framework is divided into two sections of different skeletons of diameter, eddy current probe is allow effectively to detect thickness difference The defect of special section tubular product.Setting is at certain angle of inclination by the way that component and Drive assembly will be picked up and/or is vertically arranged, it both can be with It detects the defect of metal pipe material different angle, can also effectively detect expanding in common metal tubing and special-shaped metal tube material On section, straight pipe and undergauge section surfaces externally and internally the defects of hole shape, channel-shaped, uneven sheet and wall thickness dimension, it can effectively ensure that The quality of special-shaped metal tube material, easy to operate, detection efficiency is high, high sensitivity.
It should be understood that the above-mentioned specific embodiment of the utility model is used only for exemplary illustration or explains this reality With novel principle, without constituting limitations of the present invention.Therefore, in the spirit and scope without departing from the utility model In the case of any modification, equivalent substitution, improvement and etc. done, should be included within the scope of protection of this utility model.In addition, The appended claims for the utility model are intended to cover to fall into attached claim scope and boundary or this range and boundary Whole change and modification in equivalent form.

Claims (10)

1. a kind of eddy current probe for metal pipe material characterized by comprising main body framework (1), at least one Drive assembly (2) and at least a pair picks up component (3);
It is provided on the main body framework (1) and the Drive assembly (2) one-to-one through-hole, Drive assembly (2) position In in the through-hole;
The pickup component (3) connect with the Drive assembly (2).
2. eddy current probe according to claim 1, which is characterized in that the Drive assembly (2) includes: excitation coil skeleton (21) and excitation coil (22);
The excitation coil (22) is wound on the excitation coil skeleton (21).
3. eddy current probe according to claim 2, which is characterized in that the pickup component (3) includes: pick-up winding skeleton (31) and pick-up winding (32);
The pick-up winding (32) is wound on the pick-up winding skeleton (31).
4. eddy current probe according to claim 3, which is characterized in that
Described pick-up winding skeleton (31) one end is provided with internal screw thread, excitation coil skeleton (21) both ends be provided with it is described The matched external screw thread of internal screw thread;
The pick-up winding skeleton (31) and the excitation coil skeleton (21) are by the internal screw thread and described externally threaded match Conjunction is fixedly connected.
5. eddy current probe according to claim 4, which is characterized in that the section of the main body framework (1) is circle, and is wrapped Include first segment skeleton (11) and second segment skeleton (12);
The radius of the first segment skeleton (11) and the second segment skeleton (12) is not identical.
6. eddy current probe according to claim 1-5, which is characterized in that further include protection component (4):
The protection component (4) is wrapped in the Drive assembly (2) and/or the pickup component (3) is external.
7. eddy current probe according to claim 5, which is characterized in that
Excitation coil skeleton (21) being positioned radially along the main body framework (1), and the main body framework (1) is stretched out at both ends And it is connect with the pick-up winding skeleton (31).
8. eddy current probe according to claim 7, which is characterized in that the pickup component (3) and the Drive assembly (2) It is at certain angle of inclination setting and/or is vertically arranged;
Be respectively provided on the first segment skeleton (11) and the second segment skeleton (12) be obliquely installed with it is vertically disposed described Pick up component (3) and the Drive assembly (2).
9. eddy current probe according to claim 8, which is characterized in that the pickup component (3) and the Drive assembly (2) It is arranged in 8-12 degree.
10. a kind of vortex detection device, which is characterized in that including such as described in any item eddy current probes of claim 1-9, also wrap Include vortex equipment;
The Drive assembly (2) and the pickup component (3) are connected to the vortex equipment.
CN201821510922.7U 2018-09-13 2018-09-13 A kind of eddy current probe and vortex detection device for metal pipe material Active CN208833709U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821510922.7U CN208833709U (en) 2018-09-13 2018-09-13 A kind of eddy current probe and vortex detection device for metal pipe material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821510922.7U CN208833709U (en) 2018-09-13 2018-09-13 A kind of eddy current probe and vortex detection device for metal pipe material

Publications (1)

Publication Number Publication Date
CN208833709U true CN208833709U (en) 2019-05-07

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CN201821510922.7U Active CN208833709U (en) 2018-09-13 2018-09-13 A kind of eddy current probe and vortex detection device for metal pipe material

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111076029A (en) * 2019-12-31 2020-04-28 中国人民解放军92578部队 Internal detection device for micro pipeline corrosion eddy
CN112782274A (en) * 2021-02-09 2021-05-11 北京工业大学 Magnetic-gathering eddy current sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111076029A (en) * 2019-12-31 2020-04-28 中国人民解放军92578部队 Internal detection device for micro pipeline corrosion eddy
CN112782274A (en) * 2021-02-09 2021-05-11 北京工业大学 Magnetic-gathering eddy current sensor

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