CN206489116U - A kind of magnetic drives formula Array eddy-current probe for defect inspection - Google Patents
A kind of magnetic drives formula Array eddy-current probe for defect inspection Download PDFInfo
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- CN206489116U CN206489116U CN201720060472.5U CN201720060472U CN206489116U CN 206489116 U CN206489116 U CN 206489116U CN 201720060472 U CN201720060472 U CN 201720060472U CN 206489116 U CN206489116 U CN 206489116U
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Abstract
A kind of magnetic drives formula Array eddy-current probe for defect inspection, 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 constituted by slidably packing into the ferromagnetic material skeleton in pipeline, the PVC skeletons of multiple circular array and the ring being wrapped on PVC skeletons detection coil and laser head；The ring detection coil of multiple circular array can detect defect present in tube wall, and can orient the axial direction and ring position of wall defects simultaneously；Because incentive probe skeleton and detection probe framework have magnetic adsorbability, ensure that excitation coil, multiple rings detect the synchronism that coil is axially moved along pipeline by non-contacting mode so can realize；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 force for defect inspection
Driven type Array 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 scarce for pipeline
The magnetic drives formula Array eddy-current probe of detection is fallen into, drives ring to detect coil ferromagnetic material by excitation coil permanent magnetism iron skeleton
Skeleton causes the detection coil of excitation coil and 12 circular array axially to remain the synchronism of motion in pipeline, leads in addition
Cross 12 PVC skeletons and the ring being wrapped on PVC skeletons detection coil is realized and the ring of pipe wall defect is positioned；This
Outside, it is penetrating type eddy current probe, relative to normal because excitation coil and detection coil are respectively distributed to the outer wall and inwall of pipeline
The non-penetrating type eddy current probe of rule, has similar detection sensitivity, simultaneously for depth to the defect of inner-walls of duct and outer wall
Larger defect, the problem of in the absence of signal saturation, without standard measure.
To achieve the above objectives, the utility model is adopted the following technical scheme that：
A kind of magnetic drives formula Array eddy-current probe for defect inspection, including incentive probe device and detection are visited
Head 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 in permanent magnetism iron skeleton 2
On excitation coil 3 constitute；The detection probe apparatus is by slidably packing into the ferromagnetic material skeleton 4 in pipeline 1, multiple being formed
The PVC skeletons 7 of circular array and the ring detection coil 8 and laser head 9 that are wrapped on PVC skeletons 7 are constituted；The ferromagnetic material
There are the PVC skeletons mounting hole 5 and a laser head mounting hole 6 of the circular array consistent with the quantity of PVC skeletons 7 on material skeleton 4,
The PVC skeletons 7 and the ring detection coil 8 being wrapped on PVC skeletons 7 are arranged in PVC skeletons mounting hole 5, laser head 9
In laser head mounting hole 6；The ring detection coil 8 for forming circular array can be detected to be lacked present in tube wall
Fall into, and the axial direction and ring position of wall defects can be oriented simultaneously.
The quantity of the PVC skeletons 7 is 12, accordingly, and the quantity of PVC skeletons mounting hole 5 is also 12.
The ferromagnetic material skeleton 4 is made up of ferrimagnet, the PVC skeletons 7 and is wrapped on PVC skeletons 7
Ring detection coil 8 tight fit is arranged in PVC skeletons mounting hole 5.
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 ring detection coil 8 is wrapped on PVC skeletons 7 for the enamel-covered wire of multilayer.
The method that magnetic drives formula Array eddy-current probe described above for defect inspection carries out defects detection, it is first
First, excitation coil 3 is continually fed into the sinusoidal excitation current of stable state, and the sinusoidal excitation current can produce alternating magnetic field in pipeline 1,
The magnetic field of change can generate the vortex of alternation in tube wall, and vortex can be disturbed by wall defects, be vortexed the secondary magnetisation inducted
Field and detection voltage signal can be caught by the ring detection coil 8 of multiple circular array and then reflect the information of wall defects；
Secondly, permanent magnetism iron skeleton 2 slides axially carry out axial scan on the outer wall of pipeline 1, at the same time ferromagnetic 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；It is multiple
The ring of circular array detects the detection voltage signal of the current axial location of the real-time capture of coil 8, to the detection electricity of each passage
Pressure signal is handled and is compared with zero defect tube wall detection voltage signal, so as to judge that current axial location whether there is
Defect；If it is determined that defect is present, then the axial location of the defect is just thereby determined that, it is necessary to further position the ring of the defect
To position；
Finally, the detection voltage signal of coil 8 is detected by analyzing the ring of multiple passages, i.e., can extrapolate defect
Ring position；In addition, for that can cause each simultaneously along pipeline axis rotation when preventing permanent magnetism iron skeleton 2 from being slid axially along tube wall
The ring position of ring detection coil can not judge, therefore, being mounted with laser head 9 on ferromagnetic material skeleton 4, what it sent swashs
Light can be beaten on the disk with angle being pre-placed at the mouth of pipe of pipeline 1, thus, it is possible to constantly determine that each ring detects line
Circle is in the current location of tube wall ring.
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 ring detection coil ferromagnetic material skeleton 4 so that the ring of excitation coil 3 and multiple circular array
Detection coil 5 axially remains the synchronism of motion in pipeline.Compared to the excitation coil and detection line of existing eddy current probe
Circle is by way of mechanical connection, and the utility model probe is detected particularly with long tube, can solved with very high portability
Certainly standard machinery connection is difficult to the problem of inner-walls of duct very deep position places coil and ensures coil movement synchronism, very
Big degree improves the detection range and accuracy of detection of eddy current probe.
2nd, the ring for positioning and analyzing multiple circular array by the ring of laser head 9 detects the detection electricity in coil 8
Signal is pressed, the ring position of defect can be extrapolated, that is to say, that the utility model can realize the detection of pipe wall defect, and
The axial direction and ring position of wall defects are oriented simultaneously.
3rd, because the ring detection coil 8 of excitation coil 3 and multiple circular array is respectively distributed to the outer wall of pipeline 1 and interior
Wall, is penetrating type eddy current probe, relative to conventional non-penetrating type eddy current probe, has phase to the defect of inner-walls of duct and outer wall
As 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 utility model ferromagnetic material skeleton.
Fig. 4 is the assembling schematic diagram that the utility model detects probe apparatus.
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 Array eddy-current probe for defect inspection of the present embodiment, including swash
Probe apparatus and detection probe apparatus are encouraged, incentive probe device is by being slidably enclosed on the permanent magnetism iron skeleton 2 of the outer wall of pipeline 1 and winding
Excitation coil 3 on permanent magnetism iron skeleton 2 is constituted；Probe apparatus is detected by slidably packing into the ferromagnetic material skeleton in pipeline 1
4th, the PVC skeletons 7 of 12 circular array and the ring detection coil 8 and laser head 9 that are wrapped on PVC skeletons 7 are constituted；12
The ring detection coil 8 of array can detect defect present in tube wall, and can orient axial direction and the ring of wall defects simultaneously
Position；The laser that laser head 9 is sent 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；Because the skeleton of incentive probe device is permanent magnet material, the skeleton of detection probe apparatus is
Ferromagnetic material, so when incentive probe device is axially moved along the outer wall of pipeline 1, detection probe apparatus can because magnetic adsorbability with
It is synchronized with the movement vertically with incentive probe device, excitation coil 3,12 detection lines is ensured by non-contacting mode so as to realize
The synchronism that circle 8 is axially moved along pipeline.
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 slide axially.
As shown in figure 3, being to have 12 on the structural representation of the utility model ferromagnetic material skeleton, ferromagnetic material skeleton 4
The PVC skeletons mounting hole 5 and a laser head mounting hole 6 of circular array, aperture and the PVC skeletons 7 of PVC skeletons mounting hole 5
External diameter it is equal, the aperture of the laser head mounting hole 6 on ferromagnetic material skeleton 4 is equal with the external diameter of laser head 9, while ferromagnetic material
Expect that the external diameter of skeleton 4 is equal with the internal diameter of pipeline 1, so can edge under the magnetic adsorbability effect of excitation coil permanent magnetism iron skeleton 2
The inwall of pipeline 1 slides axially.
As shown in figure 4, detecting the assembling schematic diagram of probe apparatus, the PVC of 12 circular array for the utility model
Skeleton 7 and the ring detection coil 8 being wrapped on PVC skeletons 7 are separately mounted in this 12 PVC skeletons mounting holes 5；Simultaneously
Laser head mounting hole 6 on ferromagnetic material skeleton 4 is used to install laser head 9；The laser that laser head 9 is sent beat be pre-placed in
On the disk with angle at the mouth of pipe of pipeline 1, for determining defect in the position of tube wall ring.
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 sinusoidal excitation current can be produced in pipeline 1
Raw alternating magnetic field, the magnetic field of change can generate the vortex of alternation in tube wall, and vortex can be disturbed by wall defects, vortex sense
Raw secondary magnetic field and detection voltage signal can be caught by the ring detection coil 8 of multiple circular array and then reflect that tube wall lacks
Sunken information.
Secondly, permanent magnetism iron skeleton 2 slides axially carry out axial scan on the outer wall of pipeline 1, at the same time ferromagnetic 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；It is multiple
The ring of circular array detects the detection voltage signal of the current axial location of the real-time capture of coil 8, to the detection electricity of each passage
Pressure signal is handled and is compared with zero defect tube wall detection voltage signal, so as to judge that current axial location whether there is
Defect；If it is determined that defect is present, then the axial location of the defect is just thereby determined that, it is necessary to further position the ring of the defect
To position.
Finally, the detection voltage signal of coil 8 is detected by analyzing the ring of multiple passages, i.e., can extrapolate defect
Ring position；In addition, for that can cause each simultaneously along pipeline axis rotation when preventing permanent magnetism iron skeleton 2 from being slid axially along tube wall
The ring position of ring detection coil can not judge, therefore, being mounted with laser head 9 on ferromagnetic material skeleton 4, what it sent swashs
Light can be beaten on the disk with angle being pre-placed at the mouth of pipe of pipeline 1, thus, it is possible to determine that each ring detects line in real time
Circle is in the current location of tube wall ring.
Claims (5)
1. a kind of magnetic drives formula Array eddy-current probe for defect inspection, it is characterised in that：Including incentive probe dress
Probe apparatus is put and detects, the incentive probe device is by being slidably enclosed on the permanent magnetism iron skeleton (2) of pipeline (1) outer wall and winding
Excitation coil (3) composition on permanent magnetism iron skeleton (2)；Iron of the detection probe apparatus by slidably packing into pipeline (1)
Magnetic material skeleton (4), multiple PVC skeletons (7) for forming circular array and the ring detection coil being wrapped on PVC skeletons (7)
(8) and laser head (9) composition；There is the circular array consistent with PVC skeletons (7) quantity on the ferromagnetic material skeleton (4)
PVC skeletons mounting hole (5) and a laser head mounting hole (6), the PVC skeletons (7) and are wrapped on PVC skeletons (7)
Ring detection coil (8) be arranged on PVC skeletons mounting hole (5) in, laser head (9) be arranged on laser head mounting hole (6) in.
2. a kind of magnetic drives formula Array eddy-current probe for defect inspection according to claim 1, its feature
It is：The quantity of the PVC skeletons (7) is 12, accordingly, and the quantity of PVC skeletons mounting hole (5) is also 12.
3. a kind of magnetic drives formula Array eddy-current probe for defect inspection according to claim 1, its feature
It is：The ferromagnetic material skeleton (4) is made up of ferrimagnet, the PVC skeletons (7) and is wrapped on PVC skeletons (7)
Ring detection coil (8) tight fit be arranged on PVC skeletons mounting hole (5) in.
4. a kind of magnetic drives formula Array eddy-current probe for defect inspection according to claim 1, its feature
It is：The permanent magnetism iron skeleton (2) is made up of permanent magnet, and excitation coil (3) is wrapped in permanent magnetism iron skeleton for the enamel-covered wire of multilayer
(2) on.
5. a kind of magnetic drives formula Array eddy-current probe for defect inspection according to claim 1, its feature
It is：The ring detection coil (8) is wrapped on PVC skeletons (7) for the enamel-covered wire of multilayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720060472.5U CN206489116U (en) | 2017-01-18 | 2017-01-18 | A kind of magnetic drives formula Array eddy-current probe for defect inspection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720060472.5U CN206489116U (en) | 2017-01-18 | 2017-01-18 | A kind of magnetic drives formula Array eddy-current probe for defect inspection |
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| CN206489116U true CN206489116U (en) | 2017-09-12 |
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| CN201720060472.5U Expired - Fee Related CN206489116U (en) | 2017-01-18 | 2017-01-18 | A kind of magnetic drives formula Array eddy-current probe for defect inspection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770636A (en) * | 2017-01-18 | 2017-05-31 | 西安交通大学 | A kind of magnetic drives formula Array eddy-current probe and method for defect inspection |
| CN108872366A (en) * | 2018-07-23 | 2018-11-23 | 爱德森（厦门）电子有限公司 | A kind of adaptive quadrature Eddy Current Testing Transducer |
-
2017
- 2017-01-18 CN CN201720060472.5U patent/CN206489116U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770636A (en) * | 2017-01-18 | 2017-05-31 | 西安交通大学 | A kind of magnetic drives formula Array eddy-current probe and method for defect inspection |
| CN106770636B (en) * | 2017-01-18 | 2018-03-13 | 西安交通大学 | A kind of magnetic drives formula Array eddy-current probe and method for defect inspection |
| CN108872366A (en) * | 2018-07-23 | 2018-11-23 | 爱德森（厦门）电子有限公司 | A kind of adaptive quadrature Eddy Current Testing Transducer |
| CN108872366B (en) * | 2018-07-23 | 2021-12-21 | 爱德森（厦门）电子有限公司 | Self-adaptive orthogonal eddy current detection sensor |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170912 Termination date: 20190118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |