CN206489117U - A kind of magnetic drives formula penetrating type eddy current probe for pipe detection - Google Patents
A kind of magnetic drives formula penetrating type eddy current probe for pipe detection Download PDFInfo
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- CN206489117U CN206489117U CN201720060473.XU CN201720060473U CN206489117U CN 206489117 U CN206489117 U CN 206489117U CN 201720060473 U CN201720060473 U CN 201720060473U CN 206489117 U CN206489117 U CN 206489117U
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Abstract
A kind of magnetic drives formula penetrating type eddy current probe for pipe detection, including incentive probe device and detection probe apparatus, incentive probe device are made up of the permanent magnetism iron skeleton for being slidably enclosed on pipeline outer wall and the excitation coil being wrapped on permanent magnetism iron skeleton；Detection probe apparatus is made up of axial signal detection device and ring signal detection device two parts, axial signal detection device is made up of the ferromagnetic material skeleton slidably packed into pipeline and the axial direction detection coil being wrapped on ferromagnetic material skeleton, for extracting the flaw indication along pipeline axial scan, ring signal detection device is constituted by being socketed in the intraskeletal Servo-controller of ferromagnetic material, the steering wheel arm in Servo-controller rotary shaft, the PVC skeletons being arranged on steering wheel arm and laser head and the ring being wrapped on PVC skeletons detection coil；The utility model has similar detection sensitivity relative to conventional non-penetrating type eddy current probe to the defect of inner-walls of duct and outer wall, simultaneously for the defect that depth is larger, the problem of in the absence of signal saturation, without standard measure.
Description
Technical field
The utility model is related to a kind of electromagnetic nondestructive test probe, and in particular to a kind of magnetic drives for pipe detection
Formula penetrating type eddy current probe.
Background technology
Tubular structure is in all types of industries such as the energy, chemical industry field extensive utilization.During long-time use, in its structure
Portion inevitably produces damage or defect.Because damage or defect can have serious consequences to the security of pipeline configuration,
Therefore regular Non-Destructive Testing is carried out to it and is evaluated very necessary.
Eddy current detection method is the method that defect and damage check are carried out based on electromagnetic induction phenomenon, with to surface and closely
The advantages of shallow Flaw detectability height in surface, noncontact, fast checking is one kind to this pipeline configuration surface/near surface flaw
Carry out the effective ways of quantitative Nondestructive Evaluation.But the excitation coil of existing eddy current probe and detection coil are connected by machinery
Connect, portability is very poor, detected particularly with long tube, standard machinery connection is difficult to put in most the inside, largely limits vortex
The detection range of probe；On the other hand, traditional eddy current probe is the non-penetrating that excitation coil and detection coil are placed on pipeline homonymy
Type eddy current probe, non-penetrating type eddy current probe has following two aspects shortcoming when realizing detection, and one is the table only to homonymy of popping one's head in
Face/near surface flaw detection sensitivity is high, poor to the flaw detection sensitivity for heteropleural of popping one's head in, and two be even for probe homonymy
Defect, when depth of defect is larger, there is signal saturation, without standard measure the problem of.
The content of the invention
In order to solve the problem of above-mentioned prior art is present, the purpose of this utility model is to provide a kind of for pipeline inspection
The magnetic drives formula penetrating type eddy current probe of survey, axially detection coil ferromagnetic material bone is driven by excitation coil permanent magnetism iron skeleton
Frame causes excitation coil and axially detection coil is axially remaining the synchronism of motion, additionally by Servo-controller connecting shaft
To detection coil ferromagnetic material skeleton and ring detection coil PVC skeletons so as to realize that ring detects coil in inner-walls of duct ring
Rotation, realize and the ring of pipe wall defect positioned；Further, since excitation coil and detection coil are respectively distributed to pipeline
Outer wall and inwall, be penetrating type eddy current probe, relative to conventional non-penetrating type eddy current probe, to inner-walls of duct and outer wall
Defect has similar detection sensitivity, simultaneously for the defect that depth is larger, in the absence of signal saturation, asking without standard measure
Topic.
To achieve the above objectives, the utility model is adopted the following technical scheme that：
A kind of magnetic drives formula penetrating type eddy current probe for pipe detection, including incentive probe device and detection are popped one's head in
Device, the incentive probe device is by being slidably enclosed on the permanent magnetism iron skeleton 2 of the outer wall of pipeline 1 and being wrapped on permanent magnetism iron skeleton 2
Excitation coil 3 constitute；The detection probe apparatus is by axial signal detection device and ring signal detection device two parts group
Into axial signal detection device is by slidably packing into the ferromagnetic material skeleton 4 in pipeline 1 and being wrapped in ferromagnetic material skeleton 4
On axial direction detection coil 5 constitute, for extracting the flaw indication along the axial scan of pipeline 1, ring signal detection device is by covering
The Servo-controller 6 that is connected in ferromagnetic material skeleton 4, the steering wheel arm 7 in the rotary shaft of Servo-controller 6, it is arranged on steering wheel arm 7
On PVC skeletons 8 and laser head 10 and be wrapped on PVC skeletons 8 ring detection coil 9 constitute.
There are a round boss and a circular opening in the both sides of steering wheel arm 7 respectively, and PVC skeletons 8 are enclosed on steering wheel arm 7 one
On the round boss of side, ring detection coil 9 is wrapped on PVC skeletons 8, and laser head 10 is then arranged on the opposite side of steering wheel arm 7
In circular opening.
The permanent magnetism iron skeleton 2 is made up of permanent magnet, and excitation coil 3 is wrapped in permanent magnetism iron skeleton 2 for the enamel-covered wire of multilayer
On.
The ferromagnetic material skeleton 4 is made up of ferrimagnet, and axially detection coil 5 is wrapped in iron for the enamel-covered wire of multilayer
On magnetic material skeleton 4.
Installed in the Servo-controller 6 of ferromagnetic material frame center, PVC skeletons 8, ring detection can be driven by steering wheel arm 7
Coil 9 and laser head 10 are along the inwall hoop rotation of pipeline 1.
A kind of described magnetic drives formula penetrating type eddy current probe for pipe detection, permanent magnetism iron skeleton 2 is by permanent magnetism
Body is made, self-contained magnetic；Ferromagnetic material skeleton 4 is made by ferrimagnet；Therefore permanent magnetism iron skeleton 2 and iron
Possesses strong magnetic adsorbability between magnetic material skeleton 4.
Compared to the prior art the utility model, has the following advantages that：
1st, due to possessing strong magnetic adsorbability between permanent magnetism iron skeleton 2 and ferromagnetic material skeleton 4, therefore excitation can be passed through
Coil permanent magnetism iron skeleton 2 drives axially detection coil ferromagnetic material skeleton 4 so that excitation coil 3 and axially detection coil 5 are in axle
To the synchronism for remaining motion.Excitation coil and detection coil compared to existing eddy current probe pass through mechanical connection
Mode, the utility model probe is detected with very high portability particularly with long tube, can be solved standard machinery connection and is difficult to
The problem of inside pipe wall very deep position places coil and ensures coil movement synchronism, eddy current probe is largely improved
Detection range and accuracy of detection.
2nd, installed in the Servo-controller 6 of ferromagnetic material frame center, ring detection coil PVC can be driven by steering wheel arm 7
Skeleton 8, ring detection coil 9 and laser head 10, along the inwall hoop rotation of pipeline 1, so as to realize the ring to wall defects
Positioning, that is to say, that method described in the utility model can realize the axial direction of pipe wall defect and the detection of ring and positioning.
3rd, due to excitation coil 3 and axially, detection coil 5 and ring detection coil 9 are respectively distributed to the outer wall of pipeline 1
And inwall, it is penetrating type eddy current probe, relative to conventional non-penetrating type eddy current probe, the defect to inner-walls of duct and outer wall has
There is similar detection sensitivity, simultaneously for the defect that depth is larger, the problem of in the absence of signal saturation, without standard measure.
Brief description of the drawings
Fig. 1 is the structural representation that the utility model is popped one's head in.
Fig. 2 is the structural representation of the utility model incentive probe device.
Fig. 3 is the structural representation of the axial signal detection device of the utility model.
Fig. 4 is the assembling schematic diagram of the utility model ring signal detection device.
Embodiment
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
As shown in figure 1, a kind of magnetic drives formula penetrating type eddy current probe for pipe detection, including incentive probe device
With detection probe apparatus, incentive probe device is by being slidably enclosed on the permanent magnetism iron skeleton 2 of the outer wall of pipeline 1 and being wrapped in permanent magnetism gagger
Excitation coil 3 on frame 2 is constituted；Detection probe apparatus is made up of two parts, is respectively axial signal detection device and ring letter
Number detection device, axial signal detection device is by slidably packing into the ferromagnetic material skeleton 4 in pipeline 1 and being wrapped in ferromagnetic material
Axial direction detection coil 5 on material skeleton 4 is constituted, for extracting the flaw indication along the axial scan of pipeline 1, ring signal detection dress
Put and be made up of Servo-controller 6, steering wheel arm 7, PVC skeletons 8, ring detection coil 9 and laser head 10, what laser head 10 was sent
Laser is beaten on the disk with angle being previously positioned at the mouth of pipe of pipeline 1, for determining defect in the position of the tube wall ring of pipeline 1
Put；Because the skeleton of incentive probe device is permanent magnet material, the skeleton of detection probe apparatus is ferromagnetic material, so when excitation
Probe apparatus along the outer wall of pipeline 1 be axially moved when, detection probe apparatus can because magnetic adsorbability follow incentive probe device along axle
To being synchronized with the movement, ensure that excitation coil 3, axially detection coil 5 and ring detect line by non-contacting mode so as to realize
Enclose 9 synchronism axially movable.
As shown in Fig. 2 the incentive probe device is made up of permanent magnetism iron skeleton 2 and excitation coil 3, permanent magnetism iron skeleton 2 by
Permanent magnet is made, and excitation coil 3 is wrapped on permanent magnetism iron skeleton 2 for the enamel-covered wire of multilayer, is passed through exciting current to produce excitation
Signal, while the center of permanent magnetism iron skeleton 2 is a circular hole, its internal diameter is equal with the external diameter of pipeline 1, can be along pipeline 1
Outer wall slides axially.
As shown in figure 3, being the structural representation of the axial signal detection device of the utility model, by the He of ferromagnetic material skeleton 4
Axially detection coil 5 is constituted, and ferromagnetic material skeleton 4 is made up of ferrimagnet, and axially detection coil 5 twines for the enamel-covered wire of multilayer
It is wound on ferromagnetic material skeleton 4, for detecting the flaw indication along the axial scan of pipeline 1, while the external diameter of ferromagnetic material skeleton 4
It is equal with the internal diameter of pipeline 1, so can be slid axially under the magneticaction of excitation coil permanent magnetism iron skeleton 2 along the inwall of pipeline 1.
As shown in figure 4, being the assembling schematic diagram of the utility model ring signal detection device, Servo-controller 6 is arranged on iron
In the center hole of magnetic material skeleton 4, steering wheel arm 7 is arranged in the rotary shaft of Servo-controller 6.The both sides of steering wheel arm 7 have one respectively
Round boss and a circular opening, PVC skeletons 8 are enclosed on the round boss of the side of steering wheel arm 7, and ring detection coil 9 is wound
On PVC skeletons 8；Laser head 10 is then in the opposite side circular opening of steering wheel arm.When Servo-controller 6 is driven by rotary shaft
When dynamic steering wheel arm is around 6 rotary shaft center rotating of Servo-controller, steering wheel arm 7 drives PVC skeletons 8 and laser head 10 around servorudder simultaneously
The rotary shaft center rotating of machine 6.Ring detection coil 9 is used to extract the flaw indication scanned along the tube wall ring of pipeline 1, laser head 10
The laser sent is beaten on the disk with angle being pre-placed at the mouth of pipe of pipeline 1, for determining defect in tube wall ring
Position.
Operation principle of the present utility model is：The utility model is that the accurate detection in order to realize the wall defects of pipeline 1 is commented
Estimate.
First, excitation coil 3 is continually fed into the sinusoidal excitation current of stable state, and the exciting current can produce friendship in pipeline 1
Varying magnetic field, the magnetic field of change can generate the vortex of alternation in tube wall, and vortex can be disturbed by wall defects, what vortex was inducted
Secondary magnetic field and detection voltage signal can be caught by axially detection coil 4 and ring detection coil 9 and then reflect wall defects
Information.
Secondly, permanent magnetism iron skeleton 2 can slide axially carry out axial scan on the outer wall of pipeline 1, at the same time ferromagnetism
Material skeleton 4 is synchronized with the movement because the magnetic adsorbability by permanent magnetism iron skeleton 2 can be axially retained with permanent magnetism iron skeleton 2 in pipeline 1.
Axially detection the current axial location of the real-time capture of coil 5 detection voltage signal, the detection voltage signal is handled and with
Zero defect tube wall detection voltage signal is compared, so as to judge that current axial location whether there is defect.If it is determined that defect
In the presence of, then the axial location of the defect can be thereby determined that, it is necessary to further position the ring position of the defect.
Now ring signal detection device can then play a role.The ring detection coil 9 being wrapped on PVC skeletons 8 can be
Under the driving of Servo-controller 6, linkage steering wheel arm 7 is produced around the center of the Servo-controller 6 i.e. rotation of the inwall central shaft of pipeline 1, steering wheel
The angle that arm 7 is rotated can be by external signal control；The laser head 10 being fixed on simultaneously on steering wheel arm 7 can also turn around tube wall central shaft
Dynamic, its laser sent can be beaten on the disk with angle being pre-placed at the mouth of pipe of pipeline 1, thus can determine that ring is detected
Coil is in the current location of tube wall ring；Processing comparison is carried out again by the detection voltage signal that coil is detected to ring, can
To determine defect in the position of tube wall ring.It can then be realized by above method based on such a magnetic drives formula penetrating type vortex
Probe is accurately positioned to the axial direction of the wall defects of pipeline 1 and ring.
Claims (4)
1. a kind of magnetic drives formula penetrating type eddy current probe for pipe detection, including incentive probe device and detection probe dress
Put, it is characterised in that：The incentive probe device is by being slidably enclosed on the permanent magnetism iron skeleton (2) of pipeline (1) outer wall and being wrapped in
Excitation coil (3) composition on permanent magnetism iron skeleton (2)；The detection probe apparatus is by axial signal detection device and ring signal
Detection device two parts are constituted, axial signal detection device by slidably pack into ferromagnetic material skeleton (4) in pipeline (1) and
Axial direction detection coil (5) composition on ferromagnetic material skeleton (4) is wrapped in, for extracting the defect along pipeline (1) axial scan
Signal, ring signal detection device by be socketed in ferromagnetic material skeleton (4) Servo-controller (6), installed in Servo-controller (6)
Steering wheel arm (7) in rotary shaft, the PVC skeletons (8) being arranged on steering wheel arm (7) and laser head (10) and it is wrapped in PVC bones
Ring detection coil (9) composition on frame (8).
2. a kind of magnetic drives formula penetrating type eddy current probe for pipe detection according to claim 1, its feature exists
In：There are a round boss and a circular opening in steering wheel arm (7) both sides respectively, and PVC skeletons (8) are enclosed on steering wheel arm (7)
On the round boss of side, ring detection coil (9) is wrapped on PVC skeletons (8), and laser head (10) is then arranged on steering wheel arm
(7) in opposite side circular opening.
3. a kind of magnetic drives formula penetrating type eddy current probe for pipe detection according to claim 1, its feature exists
In：The permanent magnetism iron skeleton (2) is made up of permanent magnet, and excitation coil (3) is wrapped in permanent magnetism iron skeleton (2) for the enamel-covered wire of multilayer
On.
4. a kind of magnetic drives formula penetrating type eddy current probe for pipe detection according to claim 1, its feature exists
In：The ferromagnetic material skeleton (4) is made up of ferrimagnet, and axially detection coil (5) is wrapped in iron for the enamel-covered wire of multilayer
On magnetic material skeleton (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720060473.XU CN206489117U (en) | 2017-01-18 | 2017-01-18 | A kind of magnetic drives formula penetrating type eddy current probe for pipe detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720060473.XU CN206489117U (en) | 2017-01-18 | 2017-01-18 | A kind of magnetic drives formula penetrating type eddy current probe for pipe detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206489117U true CN206489117U (en) | 2017-09-12 |
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ID=59767295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720060473.XU Expired - Fee Related CN206489117U (en) | 2017-01-18 | 2017-01-18 | A kind of magnetic drives formula penetrating type eddy current probe for pipe detection |
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| Country | Link |
|---|---|
| CN (1) | CN206489117U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979620A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of heterotype tubing eddy current array detection probe |
-
2017
- 2017-01-18 CN CN201720060473.XU patent/CN206489117U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979620A (en) * | 2017-12-27 | 2019-07-05 | 核动力运行研究所 | A kind of heterotype tubing eddy current array detection probe |
| CN109979620B (en) * | 2017-12-27 | 2024-02-09 | 核动力运行研究所 | Special-shaped pipe eddy current array detection probe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170912 Termination date: 20190118 |