CN204065016U - A kind of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device - Google Patents
A kind of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device Download PDFInfo
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- CN204065016U CN204065016U CN201420484557.2U CN201420484557U CN204065016U CN 204065016 U CN204065016 U CN 204065016U CN 201420484557 U CN201420484557 U CN 201420484557U CN 204065016 U CN204065016 U CN 204065016U
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Abstract
The utility model discloses a kind of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device, comprise scanning probe and the tester of electrical connection, wherein, scanning probe comprises housing, magneto sensor and excitation component, housing comprises a scanning portion and an installation portion, scanning portion is that shell one end caves in formation, is placed in tested pipeline outer wall with along tested pipeline scanning; Installation portion is arranged on above scanning portion, and magneto sensor and excitation component to be all located in installation portion and to be electrically connected with tester respectively.Compared with prior art, this ferromagnetic tubes inner wall corrosion the cannot-harm-detection device structure is simple, convenient processing and manufacture, possesses good economy, and detection sensitivity is high, speed is fast, measured flaw indication is directly perceived, testing result accurately and reliably, adopts the mode of pipeline external scanning to detect, and uses flexibly, convenient to operation, time saving and energy saving; Therefore, its application prospect is very wide.
Description
Technical field
The utility model relates to a kind of pick-up unit, specifically, relates to a kind of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device, belongs to technical field of nondestructive testing.
Background technology
Dynamic Non-Destruction Measurement and non-destructive detection technique, do not destroying under the prerequisites such as the original state of test substance, chemical property exactly, for obtaining the detection method that physics, the chemical corps intelligences such as content, character or the composition relevant with the quality of determinand adopt.Dynamic Non-Destruction Measurement is the application project technology grown up on the basis of the subjects such as physics, material science, fracturing mechanics, mechanical engineering, electronics, signal processor technology, infotech and artificial intelligence, along with modern industry and scientific and technical development, Dynamic Non-Destruction Measurement is subject to the attention of each industrial circle and scientific research department just day by day, not only in production quality control, its irreplaceable effect, by numerous scientific and technical personnel and business circles are admitted, and also to play an important role the inservice inspection of equipment in running.
Non-Destructive Testing is the characteristic utilizing sound, light, magnetic and electricity, under the prerequisite do not damaged or do not affect detected object usability, to detect in checked object whether existing defects or unevenness, provide defect size, position, the information such as character and quantity, possesses following characteristics usually: first is have non-destructive, and it can not damage the usability of detected object when detecting, second has comprehensive, is non-destructive, therefore allows the complete detection of detected object being carried out to 100% owing to detecting, this be destructive detect out of the question, 3rd has whole process, destructive detection is generally only applicable to detect starting material, as the stretching generally adopted in mechanical engineering, compression, bend, destructive test is all carried out for manufacture starting material, for finished product with at articles for use, unless do not prepared to allow it continue to be on active service, otherwise destructiveness can not be carried out detect, and Non-Destructive Testing is not because damaging the usability of detected object, therefore, it not only can to manufacture starting material, each middle process link, detect until final finished product carries out whole process, also can detect in commission equipment.
Conventional lossless detection method has visual detection, Ultrasonic Detection, Magnetic Flux Leakage Inspecting, infrared detection, EDDY CURRENT, acoustic emission detection, radiography detection, Magnetic testing, liquid penetration examination, alternating-current field measuring technique, far field test detection method etc., wherein, Magnetic Flux Leakage Inspecting is one of very important lossless detection method, its application is very extensive, occupies critical role.
After Magnetic Flux Leakage Inspecting refers to that ferrimagnet is magnetized, form stray field because of surface of test piece or nearly surperficial defect on its surface, people can by detecting change and then the discovery defect of stray field.So-called stray field refers to when detected material exists the defect of cutting magnetic line, the defect of material surface or structural state change can make magnetic permeability change, because the magnetic permeability of defect is very little, magnetic resistance is very large, magnetic flux in magnetic circuit is distorted, the lines of magnetic induction flow direction can change, except part magnetic flux directly can walk around defect by defect or material internal, also have part magnetic flux can leak into material surface overhead, walk around defect by air and enter material again, so just define stray field at material surface.
Magnetic Flux Leakage Inspecting technology effectively can be applied to the Cleaning Principle of case history based on develop into gradually a set of independent, complete of above-mentioned stray field principle just, that is: by after tested ferrimagnet magnetization, if material internal material continuously, evenly, lines of magnetic induction in material can be in the material restrained, magnetic flux is parallel to material surface, and tested material surface does not almost have magnetic field; The material defectiveness if be magnetized, its magnetic permeability is very little, magnetic resistance is very large, magnetic flux in magnetic circuit is distorted, its line of induction can change, part magnetic flux directly walks around defect by defect or from material internal, also have part magnetic flux can be leaked in the space of material surface, thus form stray field at System of Detecting Surface Defects For Material place, magnetic induction sensor (as Hall element) is utilized to obtain stray field signal, then send into signal processor and carry out signal transacting, stray field magnetic flux density component is analyzed, the associated disadvantages feature of measured material can be drawn.This kind of detection method can reduce the labour intensity of testing, improves the reliability of testing result, and reduce the impact of human factor, applicable surface is wider.
The industrial pipeline applied in the numerous areas such as petrochemical industry, the energy is often in severe working environment, the impact of the many factors such as pumped (conveying) medium, air, temperature and stress is easily subject in During Process of Long-term Operation, produce the defects such as corrosion and material degeneration, the pipe leakage caused thus and explosion accident often bring serious economic loss and catastrophic strike to enterprise, and cause extremely serious environmental pollution, therefore, need regularly to detect industrial pipeline and safeguard, Magnetic Flux Leakage Inspecting as one preferably lossless detection method be widely used.Conventional leakage magnetic detection device adopts former and later two ring-shaped magnets to be fixed on the two ends of a cylinder-shaped iron core usually, the surface of magnet is provided with annular steel brush, the whole magnetic loop of conducting is carried out with inner-walls of duct close contact by steel brush, in addition, a circle probe is also circumferentially had in the centre position of magnet steel brush, probe is fixed on above iron core by spring, to realize detecting function.This kind of pick-up unit not only complex structure, size is comparatively large, and processing and manufacturing and assembling are all wasted time and energy, and involve great expense uneconomical, and due to the magnetic conduction loss of steel brush comparatively large, affect accuracy and the degree of accuracy of testing result.In addition, conventional pick-up unit is due to reasons in structure, often need when detecting pipeline to pass from pipe interior to detect a flaw comprehensively, operating process extremely bothers, and once occur in inner-walls of duct that oxide skin is piled up, pick-up unit just cannot pass through, thus cause detecting interruption, can not complete in time and detect flaw detection process, have a strong impact on detection progress, wasting manpower and material resources, does not possess good promotional value.
Therefore, simple, the easy to operate and novel detection device that is that adopt pipeline external scanning mode to carry out detecting of a kind of structure is urgently released.
Utility model content
For the problems referred to above that prior art exists, the purpose of this utility model is to provide a kind of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device, and this structure of the detecting device is simple, and convenient to operation, testing result accurately and reliably.
For realizing above-mentioned utility model object, the technical solution adopted in the utility model is as follows:
A kind of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device, comprise scanning probe and the tester of electrical connection, wherein, scanning probe comprises housing, magneto sensor and excitation component, housing comprises a scanning portion and an installation portion, scanning portion is that shell one end caves in formation, is placed in tested pipeline outer wall with along tested pipeline scanning; Installation portion is arranged on above scanning portion, and magneto sensor and excitation component to be all located in installation portion and to be electrically connected with tester respectively.
Preferably, scanning portion and tested pipeline outer wall are fitted and are carried out Non-Destructive Testing in the mode of scanning, and the xsect in scanning portion is preferably inverted U-shaped.
Preferably, installation portion is a hollow cavity, and in order to easy to process, cavity is preferably rectangular parallelepiped cavity or cylindrical cavity.
Preferably, excitation component and magneto sensor are arranged on the upper and lower two ends of cavity respectively, and magneto sensor is arranged on immediately below excitation component, and are positioned at directly over scanning portion, for receiving the stray field signal that tested pipeline fault location produces.
Preferably, magneto sensor is arbitrary element that can produce corresponding change according to the change of the power in magnetic field in prior art, as Hall element, coil etc., is specifically determined by implementation environment.
Preferably, excitation component comprises yoke and drive coil, and drive coil uniform winding is in yoke and be electrically connected with signal processor, and when detecting, excitation component can produce excitation field and make tested pipeline local magnetized.
More preferably, the shape of yoke includes but not limited to E font, I font or C font.
More preferably, the shape of yoke is C font.
Further preferably, in order to form magnetic loop, C font yoke adopts opening to install towards the mode of housing bottom.
More preferably, the material of yoke adopts the magnetically soft alloy that magnetoconductivity is high.
More preferably, yoke adopts siliconized plate.
Preferably, tester comprises the signal amplifier, wave filter, Phase Processing circuit and the signal processor that are electrically connected in turn, magneto sensor is electrically connected with signal amplifier, excitation component is electrically connected with signal processor, signal processor controls excitation component automatic magnetic exciting, magneto sensor obtains flaw indication from tested pipeline outer wall, wave filter is sent into after signal amplifier low noise is amplified, carry out phase place amplification through Phase Processing circuit again after the various undesired signal of wave filter filtering, finally by signal processor, analyzing and processing is carried out to the digital signal gathered.
More preferably, tester is also provided with a display screen, and display screen is preferably liquid crystal touch display screen, display screen and signal processor data cube computation, live to show tested pipeline defect.
Preferably, in order to reduce the general assembly (TW) of scanning probe, to alleviate the burden of operator, case material adopts rigid plastic.
Preferably, in order to make this pick-up unit better hold, facilitating manual hand manipulation, housing is also provided with one handle, consider aesthetic property and hold convenience, handle is arranged on housing central section.
More preferably, hold comfort level in order to what increase operator, one deck decompression abrasionproof cloth can be set on handle.
Compared with prior art, the utility model provides a kind of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device, and this structure of the detecting device is simple, and convenient processing and manufacture, possesses good economy; Detection sensitivity is high, speed is fast, and measured flaw indication is directly perceived, and testing result accurately and reliably; Adopt the mode of pipeline external scanning to detect, use flexibly, convenient to operation, time saving and energy saving; Therefore, good application prospect and promotional value is possessed.
Annex explanation
The structural representation of the preferred implementation of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device that Fig. 1 provides for the utility model;
The scanning probe cut-open view of the preferred implementation of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device that Fig. 2 provides for the utility model;
The scanning probe side view of the preferred implementation of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device that Fig. 3 provides for the utility model.
Embodiment
Do to illustrate in detail, intactly further to the utility model below in conjunction with embodiment and accompanying drawing.
Fig. 1 to Fig. 3 is the preferred implementation schematic diagram of a kind of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device that the utility model provides.As shown in Figure 1 to Figure 3, this ferromagnetic tubes inner wall corrosion the cannot-harm-detection device comprises scanning probe 1 and the tester 2 of electrical connection, wherein, scanning probe 1 comprises housing 101, magneto sensor 102 and excitation component 103, housing 101 comprises installation portion 1011 and a scanning portion 1012, installation portion 1011 is positioned at above scanning portion 1012, magneto sensor 102 and excitation component 103 to be all located in installation portion 1011 and to be electrically connected with tester 2 respectively, scanning portion 1012 for caving in formation housing 101 one end, in order to along the scanning of tested pipeline outer wall.
As a kind of preferred implementation, for coordinating to carry out Non-Destructive Testing with tested pipeline, the shape of cross section in scanning portion 1012 is inverted U-shaped, installation portion 1011 is a rectangular parallelepiped hollow cavity, magneto sensor 102 and excitation component 103 are separately positioned on the upper and lower two ends of rectangular parallelepiped cavity, magneto sensor 102 is arranged on immediately below excitation component 103, and is positioned at directly over scanning portion 1012, for receiving the stray field signal that tested pipeline fault location produces; Magneto sensor 102 adopts the Hall element that precision is high, the linearity is good; Excitation component 103 comprises yoke 1031 and drive coil 1032, and drive coil 1032 uniform winding is in yoke 1031 and be electrically connected with signal processor 204, and when detecting, excitation component 103 can produce excitation field and make tested pipeline local magnetized.
Particularly, tester 2 comprises the signal amplifier 201 be electrically connected in turn, wave filter 202, Phase Processing circuit 203 and signal processor 204, magneto sensor 102 is electrically connected with signal amplifier 201, excitation component 103 is electrically connected with signal processor 204, signal processor 204 controls excitation component 103 automatic magnetic exciting, magneto sensor 102 obtains flaw indication from tested pipeline outer wall, wave filter 202 is sent into after signal amplifier 201 low noise is amplified, phase place amplification is carried out through Phase Processing circuit 203 again after the various undesired signal of wave filter 202 filtering, finally by signal processor 204, analyzing and processing is carried out to the digital signal gathered, in addition, tester 2 is also provided with a liquid crystal touch display screen (not shown), display screen and signal processor 204 data cube computation, live to show tested pipeline defect.
It is worth mentioning that, in order to increase sensitivity and the accuracy of detection, the siliconized plate that yoke 1031 adopts magnetoconductivity high, and in order to easy for installation, save space, yoke 1031 adopts C font siliconized plate, and when mounted, C font siliconized plate adopts opening to be fixed in installation portion 1011 towards the mode bottom housing 101.In order to reduce the general assembly (TW) of scanning probe 1, to alleviate the burden of operator, the material of housing 101 adopts rigid plastic.Again in order to make this pick-up unit better hold, facilitate manual hand manipulation, housing 101 is also provided with one handle 1013, consider aesthetic property and hold convenience, handle 1013 is arranged in the middle part of housing 101, and in order to increase the comfort level of holding of operator further, one deck decompression abrasionproof cloth (not shown) can be set on handle 1013.
When operator uses this ferromagnetic tubes inner wall corrosion the cannot-harm-detection device to carry out detection flaw detection to tested pipeline, the handle 1013 of hand-held scanning probe 1 is only needed to carry out scanning along tested pipeline, yoke 1031 in excitation component 103 and drive coil 1032 cooperatively interact and magnetic field are imposed on tested pipeline, make tube wall local magnetized, when there is etch pit hole or crackle in detected field pipe wall inside surface, this regional magnetic field produces distortion, formed and there is with physical dimension the stray field associated with the character of defect, observable electric signal is translated into after magneto sensor 102 in scanning probe 1 obtains Magnetic fluxleakage distribution situation, electric signal sends into wave filter 202 after low noise is amplified, with the various undesired signal of filtering, after Phase Processing, by signal processor 204, analyzing and processing is carried out to the digital signal gathered again, the figure of reflection inner-walls of duct defect can be obtained on a display screen.
Finally be necessary described herein: above embodiment is only for being described in more detail the technical solution of the utility model; can not be interpreted as the restriction to the utility model protection domain, some nonessential improvement that those skilled in the art makes according to foregoing of the present utility model and adjustment all belong to protection domain of the present utility model.
Claims (10)
1. ferromagnetic tubes inner wall corrosion the cannot-harm-detection device, it is characterized in that: the scanning probe and the tester that comprise electrical connection, wherein, scanning probe comprises housing, magneto sensor and excitation component, housing comprises a scanning portion and an installation portion, and scanning portion is that shell one end caves in formation; Installation portion is arranged on above scanning portion, and magneto sensor and excitation component to be all located in installation portion and to be electrically connected with tester respectively.
2. ferromagnetic tubes inner wall corrosion the cannot-harm-detection device according to claim 1, is characterized in that: the xsect in scanning portion is inverted U-shaped.
3. ferromagnetic tubes inner wall corrosion the cannot-harm-detection device according to claim 1, is characterized in that: installation portion is a hollow cavity.
4. ferromagnetic tubes inner wall corrosion the cannot-harm-detection device according to claim 3, is characterized in that: installation portion is rectangular parallelepiped cavity or cylindrical cavity.
5. ferromagnetic tubes inner wall corrosion the cannot-harm-detection device according to claim 3, is characterized in that: excitation component and magneto sensor are arranged on the upper and lower two ends of cavity respectively, and magneto sensor is arranged on immediately below excitation component, and are positioned at directly over scanning portion.
6. ferromagnetic tubes inner wall corrosion the cannot-harm-detection device according to claim 1, is characterized in that: excitation component comprises yoke and drive coil, and drive coil uniform winding is in yoke and be electrically connected with tester.
7. ferromagnetic tubes inner wall corrosion the cannot-harm-detection device according to claim 6, is characterized in that: yoke is magnetically soft alloy.
8. ferromagnetic tubes inner wall corrosion the cannot-harm-detection device according to claim 1, it is characterized in that: tester comprises the signal amplifier, wave filter, Phase Processing circuit and the signal processor that are electrically connected in turn, magneto sensor is electrically connected with signal amplifier, excitation component is electrically connected with signal processor, and signal processor controls excitation component automatic magnetic exciting.
9. ferromagnetic tubes inner wall corrosion the cannot-harm-detection device according to claim 8, is characterized in that: tester is provided with a display screen, display screen and signal processor data cube computation, and display tested pipeline defect is live.
10., according to the arbitrary described ferromagnetic tubes inner wall corrosion the cannot-harm-detection device of claim 1-9, it is characterized in that: housing also comprises one handle, handle is arranged on housing central section.
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| CN201420484557.2U CN204065016U (en) | 2014-08-26 | 2014-08-26 | A kind of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device |
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| CN201420484557.2U CN204065016U (en) | 2014-08-26 | 2014-08-26 | A kind of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979835A (en) * | 2016-01-18 | 2017-07-25 | 西红柿科技（武汉）有限公司 | A kind of magnetic memory signal collection device and stress real-time monitoring system |
| CN107356664A (en) * | 2017-08-04 | 2017-11-17 | 中国计量大学 | A kind of ferrimagnet defect detecting device based on low frequency leakage field |
| WO2019094171A1 (en) * | 2017-11-13 | 2019-05-16 | Exxonmobil Research And Engineering Company | Methods of using nondestructive material inspection systems |
| CN110672001A (en) * | 2019-10-24 | 2020-01-10 | 中航通飞华南飞机工业有限公司 | Method and device for measuring thickness of non-ferromagnetic material on surface of ferromagnetic material |
| CN110779981A (en) * | 2019-11-18 | 2020-02-11 | 北京航空航天大学 | Ferromagnetic pipeline small defect magnetic detection sensor |
| US10823701B2 (en) | 2017-11-13 | 2020-11-03 | Exxonmobil Research And Engineering Company | Methods and systems for nondestructive material inspection |
| US10883965B2 (en) | 2017-11-13 | 2021-01-05 | Exxonmobil Research And Engineering Company | Methods of using nondestructive material inspection systems |
| CN113466327A (en) * | 2021-06-29 | 2021-10-01 | 西南石油大学 | Magnetic detection device and method for wall defects of petroleum storage tank |
| CN113720500A (en) * | 2021-08-31 | 2021-11-30 | 西红柿科技（武汉）有限公司 | Stress monitoring sensor and method for steel structure |
-
2014
- 2014-08-26 CN CN201420484557.2U patent/CN204065016U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979835A (en) * | 2016-01-18 | 2017-07-25 | 西红柿科技（武汉）有限公司 | A kind of magnetic memory signal collection device and stress real-time monitoring system |
| CN107356664A (en) * | 2017-08-04 | 2017-11-17 | 中国计量大学 | A kind of ferrimagnet defect detecting device based on low frequency leakage field |
| WO2019094171A1 (en) * | 2017-11-13 | 2019-05-16 | Exxonmobil Research And Engineering Company | Methods of using nondestructive material inspection systems |
| US10823701B2 (en) | 2017-11-13 | 2020-11-03 | Exxonmobil Research And Engineering Company | Methods and systems for nondestructive material inspection |
| US10883965B2 (en) | 2017-11-13 | 2021-01-05 | Exxonmobil Research And Engineering Company | Methods of using nondestructive material inspection systems |
| CN110672001A (en) * | 2019-10-24 | 2020-01-10 | 中航通飞华南飞机工业有限公司 | Method and device for measuring thickness of non-ferromagnetic material on surface of ferromagnetic material |
| CN110779981A (en) * | 2019-11-18 | 2020-02-11 | 北京航空航天大学 | Ferromagnetic pipeline small defect magnetic detection sensor |
| CN113466327A (en) * | 2021-06-29 | 2021-10-01 | 西南石油大学 | Magnetic detection device and method for wall defects of petroleum storage tank |
| CN113720500A (en) * | 2021-08-31 | 2021-11-30 | 西红柿科技（武汉）有限公司 | Stress monitoring sensor and method for steel structure |
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