CN106153713A - A kind of metallic conduit defect in inner surface detection device - Google Patents
A kind of metallic conduit defect in inner surface detection device Download PDFInfo
- Publication number
- CN106153713A CN106153713A CN201610527922.7A CN201610527922A CN106153713A CN 106153713 A CN106153713 A CN 106153713A CN 201610527922 A CN201610527922 A CN 201610527922A CN 106153713 A CN106153713 A CN 106153713A
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- signal
- metallic conduit
- defect
- detection device
- yoke
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- 230000007547 defect Effects 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 230000005284 excitation Effects 0.000 claims abstract description 15
- 230000004907 flux Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 230000003321 amplification Effects 0.000 claims abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 claims description 2
- 229910001369 Brass Inorganic materials 0.000 claims 1
- 239000010951 brass Substances 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 230000005672 electromagnetic field Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000006163 transport media Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses a kind of metallic conduit defect in inner surface detection device, it is characterised in that: it is made up of 220V alternating current power supply (1), transformator (2), excitation coil (3), yoke (4), Hall element (5), yoke foot (6), signal amplification module (7), signal filtering module (8), analog-to-digital conversion module (9), computer (10), metallic rod (11), lifting support (12), the first motor (14), the second motor (15), fixed support (16)；The signal that 220V alternating current power supply (1) produces transfers the signal of virtual value 6 to 12V after transformator (2) to and is applied on excitation coil (3), signal can produce alternating electromagnetic field after excitation coil (3) in space, the defect that metallic conduit (13) inner surface exists can produce in space and reveal magnetic flux, reveal magnetic flux through Hall element (5), signal amplification module (7), signal filtering module (8), analog-to-digital conversion module (9) is sent on computer (10) process, the present invention can be to metallic conduit (13) inner surface axial, the defect of circumference detects, can apply in all kinds of Practical Project.
Description
Technical field
The invention belongs to electromagnetic nondestructive field, be specifically related to a kind of metallic conduit defect in inner surface detection device.
Background technology
Metallic conduit is the important component part of commercial production and civilian installation, is also the key facility in pipeline transportation.
Along with developing rapidly and the raising of urban public utilities construction speed of China's Petrochemical, pipe-line construction is also developing rapidly.
Pipeline is not only corroded by external environment, also by the corrosiveness of inside transport medium.
The defect inspection method of metallic conduit is the most of a great variety, mainly has ultrasound detection, EDDY CURRENT, Magnetic Memory to examine
Survey, ray detection etc..Each method is respectively provided with certain limitation, such as ray detection certain radiation hazradial bundle, ultrasonic inspection
Surveying result relatively big by artifical influence factor, EDDY CURRENT is difficult to accurate rational judgment etc..
Based on flux-leakage detection method, the defect in inner surface of metallic conduit is detected, have without treating test tube in advance
Road carries out the feature processed, it is also possible to pipeline carries out on-line checking and the dimensional parameters of defect is carried out quantitative analysis.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of metallic conduit defect in inner surface detection dress
Put, realize the circumference to metallic conduit, axial flaw detects.
The present invention is achieved through the following technical solutions: a kind of metallic conduit defect in inner surface detection device, it is characterised in that:
Put by 220V alternating current power supply (1), transformator (2), excitation coil (3), yoke (4), Hall element (5), yoke foot (6), signal
Big module (7), signal filtering module (8), analog-to-digital conversion module (9), computer (10), metallic rod (11), lifting support (12),
First motor (14), the second motor (15), fixed support (16) form；The excitation that 220V alternating current power supply (1) produces
Signal transfers the signal that virtual value is 6 to 12V after transformator (2) to and is applied on excitation coil (3), and signal is through overdriving line
Can produce alternating electromagnetic field after circle (3) in space, the defect that metallic conduit (13) inner surface exists can produce in space and reveal magnetic
Logical, Hall element (5) can detect leakage magnetic flux, and will detect signal via signal amplification module (7), signal filtering module
(8), analog-to-digital conversion module (9) be sent on computer (10) process, the first motor (14) is used for controlling metallic rod
(11) rotation, the second motor (15) is used for controlling the advance of metallic rod (11).
Described a kind of metallic conduit defect in inner surface detection device, it is characterised in that: the material of yoke (4) is silicon steel
Sheet, the model of Hall element (5) is SS94A1F, and detection sensitivity is 25mV/Gs, and the material of excitation coil (3) is copper, copper wire
A diameter of 0.2-1mm, the coil turn on each yoke foot (6) is 150.
Described a kind of metallic conduit defect in inner surface detection device, it is characterised in that: the quantity of Hall element (5) is 8
Individual, the angle of adjacent two Hall elements (5) is 45 °, and it is all-round that yoke (4) rotation 45 ° just can realize metallic conduit (13)
To detection.
Described a kind of metallic conduit defect in inner surface detection device, it is characterised in that: driving source is frequency 50Hz, effectively
Value is the alternating current of 220V.
Described a kind of metallic conduit defect in inner surface detection device, it is characterised in that: the letter that Hall element (5) collects
Metallic conduit (13) is diagnosed by the process number eventually passing through computer (10) with analyzing.
The operation principle of the present invention is: the pumping signal that 220V alternating current power supply (1) produces loads after transformator (2) is changed
On the excitation coil (3) of yoke (4), according to Faraday law of electromagnetic induction, space can produce alternating magnetic field, and the magnetic line of force is deferred to
Magnetic resistance minimum principle is propagated.Being affected by Kelvin effect, major part magnetic flux can be distributed in the inner surface of metallic conduit (13), works as gold
During metal conduit (13) inner surface existing defects, defect can produce in space and reveal magnetic flux, by rotating yoke (4) so that Hall
Element (5) detects that leakage magnetic flux, detection signal are ultimately delivered on computer (10) process and analyze.Due to yoke
(4) being evenly distributed 8 Hall elements (5) on, the angle of adjacent two Hall elements (5) is 45 °, as long as so at least revolving
Turn that yoke (4) 45 ° just can realize defective locations is circumferentially positioned.
The invention has the beneficial effects as follows: described a kind of metallic conduit defect in inner surface detection device both can be by circumference
Rotate and detect circumferential defect, axial flaw can be detected by axially advancing again.Wherein, the magnetic of 8 Hall elements it is configured with
As long as it is all-round to carrying out scanning that yoke rotation 45 ° just can realize metallic conduit.
Accompanying drawing explanation
Fig. 1 is a kind of metallic conduit defect in inner surface detection device schematic diagram of the present invention；
Fig. 2 is a kind of metallic conduit defect in inner surface detection device side view of the present invention；
Fig. 3 is Hall element testing result schematic diagram.
Detailed description of the invention
With detailed description of the invention, the present invention is described in further detail below in conjunction with the accompanying drawings.
See accompanying drawing 1, a kind of metallic conduit defect in inner surface detection device, it is characterised in that: by 220V alternating current power supply
(1), transformator (2), excitation coil (3), yoke (4), Hall element (5), yoke foot (6), signal amplification module (7), signal
Filtration module (8), analog-to-digital conversion module (9), computer (10), metallic rod (11), lifting support (12), the first motor
(14), the second motor (15), fixed support (16) composition；The pumping signal that 220V alternating current power supply (1) produces is through transformation
Transferring the signal that virtual value is 6 to 12V after device (2) to be applied on excitation coil (3), signal meeting after excitation coil (3) exists
Space produces alternating electromagnetic field, and the defect that metallic conduit (13) inner surface exists can produce in space and reveal magnetic flux, Hall element
(5) leakage magnetic flux can be detected, and signal will be detected via signal amplification module (7), signal filtering module (8), analog digital conversion
Module (9) is sent on computer (10) process, and the first motor (14) is used for controlling the rotation of metallic rod (11), the
Two stepping motor (15) is used for controlling the advance of metallic rod (11).
Seeing accompanying drawing 2, a kind of metallic conduit defect in inner surface detection device side view, 8 Hall elements (5) are along yoke
(4) circumference is uniformly distributed, and the angle of adjacent two Hall elements is 45 °.
Fig. 3 is Hall element testing result schematic diagram, occurs that obvious fluctuation determines scarce by the signal of Hall element
The existence fallen into.
Claims (5)
1. metallic conduit defect in inner surface detection device, it is characterised in that: by 220V alternating current power supply (1), transformator (2),
Excitation coil (3), yoke (4), Hall element (5), yoke foot (6), signal amplification module (7), signal filtering module (8), mould
Number conversion module (9), computer (10), metallic rod (11), lifting support (12), the first motor (14), the second stepping electricity
Machine (15), fixed support (16) form；The pumping signal that 220V alternating current power supply (1) produces transfers to effectively after transformator (2)
Value is that the signal of 6 to 12V is applied on excitation coil (3), and signal can produce alternating electromagnetism after excitation coil (3) in space
, the defect that metallic conduit (13) inner surface exists can produce in space and reveal magnetic flux, and Hall element (5) can detect magnetic leakage
Logical, and be sent to calculate via signal amplification module (7), signal filtering module (8), analog-to-digital conversion module (9) by detection signal
Machine processes on (10), and the first motor (14) is used for controlling the rotation of metallic rod (11), and the second motor (15) is used
In the advance controlling metallic rod (11).
A kind of metallic conduit defect in inner surface detection device the most according to claim 1, it is characterised in that: yoke (4)
Material is stalloy, and the model of Hall element (5) is SS94A1F, and detection sensitivity is 25mV/Gs, the material of excitation coil (3)
For copper, brass wire diameter is 0.2-1mm, and the coil turn on each yoke foot (6) is 150.
A kind of metallic conduit defect in inner surface detection device the most according to claim 1, it is characterised in that: Hall element
(5) quantity is 8, and the angle of adjacent two Hall elements (5) is 45 °, and yoke (4) rotates 45 ° and just can realize metal tube
Road (13) all-round to detection.
A kind of metallic conduit defect in inner surface detection device the most according to claim 1, it is characterised in that: driving source is frequency
Rate 50Hz, virtual value is the alternating current of 220V.
A kind of metallic conduit defect in inner surface detection device the most according to claim 1, it is characterised in that: Hall element
(5) signal collected eventually passes through the process of computer (10) and diagnoses metallic conduit (13) with analyzing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610527922.7A CN106153713A (en) | 2016-06-28 | 2016-06-28 | A kind of metallic conduit defect in inner surface detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610527922.7A CN106153713A (en) | 2016-06-28 | 2016-06-28 | A kind of metallic conduit defect in inner surface detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106153713A true CN106153713A (en) | 2016-11-23 |
Family
ID=58061897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610527922.7A Pending CN106153713A (en) | 2016-06-28 | 2016-06-28 | A kind of metallic conduit defect in inner surface detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106153713A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389782A (en) * | 2017-06-29 | 2017-11-24 | 清华大学 | Spiral nonmagnetic matrix high accuracy imaging detection device for the detection of pipeline tiny flaw |
| CN107643321A (en) * | 2017-09-05 | 2018-01-30 | 四川大学 | Multifrequency alternating-current field fingerprint technique metal pipeline corrosion detecting technology based on phase identification |
| CN107941855A (en) * | 2017-11-22 | 2018-04-20 | 四川大学 | A kind of pipe end thermal imaging detection device based on permanent magnet rotary heating |
| CN108426520A (en) * | 2018-05-15 | 2018-08-21 | 天津大学 | The detection device in pipeline stolen hole and the detection method at stolen hole center, diameter |
| CN108663432A (en) * | 2018-05-15 | 2018-10-16 | 天津大学 | Device for detecting tiny defects of pipeline and method for detecting centers and diameters of defects |
| CN110018228A (en) * | 2019-04-26 | 2019-07-16 | 中国水利水电科学研究院 | Embedded type PCCP pipeline circuit wire position detection system, method and device |
| CN110108784A (en) * | 2019-06-03 | 2019-08-09 | 中国计量大学 | A kind of weld seam detection Portable pen based on low frequency leakage field |
| CN111122798A (en) * | 2020-01-20 | 2020-05-08 | 胡志伟 | Nondestructive testing equipment for coatings on inner and outer walls of metal pipe |
| CN113074620A (en) * | 2021-05-11 | 2021-07-06 | 北京理工大学 | Metal pipeline composite parameter measuring method and system based on elevation intersection point |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389782A (en) * | 2017-06-29 | 2017-11-24 | 清华大学 | Spiral nonmagnetic matrix high accuracy imaging detection device for the detection of pipeline tiny flaw |
| CN107643321A (en) * | 2017-09-05 | 2018-01-30 | 四川大学 | Multifrequency alternating-current field fingerprint technique metal pipeline corrosion detecting technology based on phase identification |
| CN107941855A (en) * | 2017-11-22 | 2018-04-20 | 四川大学 | A kind of pipe end thermal imaging detection device based on permanent magnet rotary heating |
| CN108426520A (en) * | 2018-05-15 | 2018-08-21 | 天津大学 | The detection device in pipeline stolen hole and the detection method at stolen hole center, diameter |
| CN108663432A (en) * | 2018-05-15 | 2018-10-16 | 天津大学 | Device for detecting tiny defects of pipeline and method for detecting centers and diameters of defects |
| CN110018228A (en) * | 2019-04-26 | 2019-07-16 | 中国水利水电科学研究院 | Embedded type PCCP pipeline circuit wire position detection system, method and device |
| CN110018228B (en) * | 2019-04-26 | 2024-02-27 | 中国水利水电科学研究院 | System, method and device for detecting broken wire position of embedded PCCP (prestressed concrete cylinder pipe) |
| CN110108784A (en) * | 2019-06-03 | 2019-08-09 | 中国计量大学 | A kind of weld seam detection Portable pen based on low frequency leakage field |
| CN111122798A (en) * | 2020-01-20 | 2020-05-08 | 胡志伟 | Nondestructive testing equipment for coatings on inner and outer walls of metal pipe |
| CN113074620A (en) * | 2021-05-11 | 2021-07-06 | 北京理工大学 | Metal pipeline composite parameter measuring method and system based on elevation intersection point |
| CN113074620B (en) * | 2021-05-11 | 2022-04-08 | 北京理工大学 | Metal pipeline composite parameter measuring method and system based on elevation intersection point |
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Application publication date: 20161123 |
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