CN204044110U - A kind of the cannot-harm-detection device for metallic conduit - Google Patents
A kind of the cannot-harm-detection device for metallic conduit Download PDFInfo
- Publication number
- CN204044110U CN204044110U CN201420484584.XU CN201420484584U CN204044110U CN 204044110 U CN204044110 U CN 204044110U CN 201420484584 U CN201420484584 U CN 201420484584U CN 204044110 U CN204044110 U CN 204044110U
- Authority
- CN
- China
- Prior art keywords
- metallic conduit
- harm
- detection device
- excitation component
- electrically connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 230000005291 magnetic effect Effects 0.000 claims abstract description 39
- 230000005284 excitation Effects 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 claims abstract description 18
- 239000000523 sample Substances 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 10
- 230000007797 corrosion Effects 0.000 claims abstract description 4
- 238000005260 corrosion Methods 0.000 claims abstract description 4
- 230000007547 defect Effects 0.000 claims description 19
- 230000005294 ferromagnetic effect Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 11
- 230000004907 flux Effects 0.000 description 13
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000001066 destructive effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009659 non-destructive testing Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000011089 mechanical engineering Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 208000031968 Cadaver Diseases 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000002601 radiography Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model discloses a kind of the cannot-harm-detection device for metallic conduit, this pick-up unit is for detecting the corrosion in metallic conduit, it comprises probe and the tester of electrical connection, wherein, probe comprises body, magneto sensor and excitation component, body is made up of a scanning portion and an installation portion, and scanning portion removes material and formed through body one end, installation portion is located at the top in scanning portion; Magneto sensor and excitation component to be all located in installation portion and to be electrically connected with tester respectively; Tester comprises the signal amplifier, wave filter, Phase Processing circuit and the signal processor that are electrically connected in turn, and magneto sensor is electrically connected with signal amplifier, and excitation component is electrically connected with signal processor, and signal processor controls excitation component automatic magnetic exciting.Compared with prior art, this structure of the detecting device is simple, and detection speed is fast, and testing result accurately and reliably, adopts the mode of pipeline external scanning to detect, and uses flexibly, convenient to operation; 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 the cannot-harm-detection device for metallic conduit, 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 metal material 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 metal material 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.
Petrochemical industry, the Industrial Metal pipeline applied in the numerous areas such as the energy is often in severe working environment, easily pumped (conveying) medium is subject in During Process of Long-term Operation, air, the impact of the many factors such as temperature and stress, produce the defects such as corrosion and material degeneration, the metallic conduit caused thus leaks and explosion accident often brings serious economic loss and catastrophic strike to enterprise, and cause extremely serious environmental pollution, therefore, need regularly to detect Industrial Metal 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 metallic conduit 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 the outside scanning mode of metallic conduit 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 the cannot-harm-detection device for metallic conduit, 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 metal pipe internal wall corrodes the cannot-harm-detection device, this pick-up unit is for detecting the corrosion in metallic conduit, it comprises probe and the tester of electrical connection, wherein, probe comprises body, magneto sensor and excitation component, body is made up of a scanning portion and an installation portion, and scanning portion removes material and formed through body one end, installation portion is located at the top in scanning portion; Magneto sensor and excitation component to be all located in installation portion and to be electrically connected with tester respectively; Tester comprises the signal amplifier, wave filter, Phase Processing circuit and the signal processor that are electrically connected in turn, and magneto sensor is electrically connected with signal amplifier, and excitation component is electrically connected with signal processor, and signal processor controls excitation component automatic magnetic exciting.
Preferably, metallic conduit is ferromagnetic pipeline.
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, 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, 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 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 the cannot-harm-detection device for metallic conduit, 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 the cannot-harm-detection device for metallic conduit that Fig. 1 provides for the utility model;
The probe cut-open view of the preferred implementation of the cannot-harm-detection device for metallic conduit that Fig. 2 provides for the utility model;
The probe side view of the preferred implementation of the cannot-harm-detection device for metallic conduit 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 corrodes the preferred implementation schematic diagram of the cannot-harm-detection device for a kind of metal pipe internal wall that the utility model provides.As shown in Figure 1 to Figure 3, this metal pipe internal wall corrodes the cannot-harm-detection device for detecting ferromagnetic metal pipeline, specifically comprise probe 1 and the tester 2 of electrical connection, wherein, 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 metallic conduit outer wall.
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 metallic conduit 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 metallic conduit defect.
As a kind of preferred implementation, for coordinating to carry out Non-Destructive Testing with tested metallic conduit, 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 metallic conduit 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 metallic conduit local magnetized.
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 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 use this metal pipe internal wall corrode the cannot-harm-detection device to tested metallic conduit carry out detection flaw detection time, the handle 1013 of hand hold transducer 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 metallic conduit, 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 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 metal pipe internal wall 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. the cannot-harm-detection device for metallic conduit, it is characterized in that: described the cannot-harm-detection device is for detecting the corrosion in metallic conduit, it comprises probe and the tester of electrical connection, wherein, probe comprises body, magneto sensor and excitation component, body is made up of a scanning portion and an installation portion, and scanning portion removes material and formed through body one end, installation portion is located at the top in scanning portion; Magneto sensor and excitation component to be all located in installation portion and to be electrically connected with tester respectively; Tester comprises the signal amplifier, wave filter, Phase Processing circuit and the signal processor that are electrically connected in turn, and magneto sensor is electrically connected with signal amplifier, and excitation component is electrically connected with signal processor, and signal processor controls excitation component automatic magnetic exciting.
2. the cannot-harm-detection device for metallic conduit according to claim 1, is characterized in that: the xsect in scanning portion is inverted U-shaped.
3. the cannot-harm-detection device for metallic conduit according to claim 1, is characterized in that: installation portion is a hollow cavity.
4. the cannot-harm-detection device for metallic conduit according to claim 3, is characterized in that: installation portion is rectangular parallelepiped cavity or cylindrical cavity.
5. the cannot-harm-detection device for metallic conduit 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. the cannot-harm-detection device for metallic conduit 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. the cannot-harm-detection device for metallic conduit according to claim 6, is characterized in that: yoke is magnetically soft alloy.
8. the cannot-harm-detection device for metallic conduit according to claim 1, is characterized in that: metallic conduit is ferromagnetic pipeline.
9. the cannot-harm-detection device for metallic conduit according to claim 1, 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 the cannot-harm-detection device for metallic conduit of claim 1-9, it is characterized in that: housing also comprises one handle, handle is arranged on housing central section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420484584.XU CN204044110U (en) | 2014-08-26 | 2014-08-26 | A kind of the cannot-harm-detection device for metallic conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420484584.XU CN204044110U (en) | 2014-08-26 | 2014-08-26 | A kind of the cannot-harm-detection device for metallic conduit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204044110U true CN204044110U (en) | 2014-12-24 |
Family
ID=52244761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420484584.XU Expired - Fee Related CN204044110U (en) | 2014-08-26 | 2014-08-26 | A kind of the cannot-harm-detection device for metallic conduit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204044110U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153713A (en) * | 2016-06-28 | 2016-11-23 | 中国计量大学 | A kind of metallic conduit defect in inner surface detection device |
| CN107505385A (en) * | 2017-09-25 | 2017-12-22 | 天津特米斯科技有限公司 | A kind of transient electromagnetic sensor and detection sensing device |
| CN110376276A (en) * | 2019-08-08 | 2019-10-25 | 中国石油天然气股份有限公司 | Pipeline Magnetic Flux Leakage Inspection device |
| 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 |
| CN111122798A (en) * | 2020-01-20 | 2020-05-08 | 胡志伟 | Nondestructive testing equipment for coatings on inner and outer walls of metal pipe |
| CN111307929A (en) * | 2018-12-11 | 2020-06-19 | 中国计量大学 | Metal pipeline device of detecting a flaw based on low frequency magnetic leakage |
| CN113287324A (en) * | 2019-02-28 | 2021-08-20 | 谷歌有限责任公司 | Bending actuator and panel audio speaker including the same |
-
2014
- 2014-08-26 CN CN201420484584.XU patent/CN204044110U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153713A (en) * | 2016-06-28 | 2016-11-23 | 中国计量大学 | A kind of metallic conduit defect in inner surface detection device |
| CN107505385A (en) * | 2017-09-25 | 2017-12-22 | 天津特米斯科技有限公司 | A kind of transient electromagnetic sensor and detection sensing device |
| CN111307929A (en) * | 2018-12-11 | 2020-06-19 | 中国计量大学 | Metal pipeline device of detecting a flaw based on low frequency magnetic leakage |
| CN113287324A (en) * | 2019-02-28 | 2021-08-20 | 谷歌有限责任公司 | Bending actuator and panel audio speaker including the same |
| CN113287324B (en) * | 2019-02-28 | 2024-03-12 | 谷歌有限责任公司 | Bending actuator and panel audio speaker comprising the same |
| CN110376276A (en) * | 2019-08-08 | 2019-10-25 | 中国石油天然气股份有限公司 | Pipeline Magnetic Flux Leakage Inspection device |
| CN110376276B (en) * | 2019-08-08 | 2022-11-04 | 中国石油天然气股份有限公司 | Pipeline magnetic leakage detection device |
| 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 |
| CN111122798A (en) * | 2020-01-20 | 2020-05-08 | 胡志伟 | Nondestructive testing equipment for coatings on inner and outer walls of metal pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204065016U (en) | A kind of ferromagnetic tubes inner wall corrosion the cannot-harm-detection device | |
| CN204044110U (en) | A kind of the cannot-harm-detection device for metallic conduit | |
| CN106124612A (en) | A kind of Portable ferromagnetic fault in material based on low frequency electromagnetic detection device | |
| CN206489114U (en) | The sensor and system of type multimode electromagnetic ultrasound and Magnetic Flux Leakage Inspecting | |
| CN103954684B (en) | A kind of method utilizing leakage field rate of change to carry out Non-Destructive Testing | |
| CN105353030A (en) | Low-frequency electromagnetism-based defect detecting device | |
| Ru et al. | Structural coupled electromagnetic sensing of defects diagnostic system | |
| Li et al. | Inner circumferential current field testing system with TMR sensor arrays for inner-wall cracks inspection in aluminum tubes | |
| CN104833720A (en) | Method for single-coil electromagnetic resonance detection of metal pipeline damage | |
| Li et al. | Circumferential current field testing system with TMR sensor array for non-contact detection and estimation of cracks on power plant piping | |
| Pan et al. | Analysis of the eccentric problem of wire rope magnetic flux leakage testing | |
| CN108037178A (en) | A kind of Metal pipeline corrosion defects detection low frequency electromagnetic sensor array | |
| CN106442707A (en) | Metal pipeline defect detecting device based on low-frequency electromagnetism | |
| Liu et al. | In-pipe detection system based on magnetic flux leakage and eddy current detection | |
| CN111929356B (en) | Steel defect magnetic imaging device and method | |
| CN102175131A (en) | Method for measuring steel plate thickness by leakage magnetic field | |
| CN107356664A (en) | A kind of ferrimagnet defect detecting device based on low frequency leakage field | |
| CN209102667U (en) | A kind of portable pipe detection device based on far-field eddy | |
| CN206270293U (en) | A kind of metallic conduit defect detecting device based on low frequency electromagnetic | |
| CN207636538U (en) | A kind of Metal pipeline corrosion defects detection low frequency electromagnetic sensor array | |
| CN204613151U (en) | A kind of compressed natural gas storage well the cannot-harm-detection device | |
| Kim et al. | Detection method of cracks by using magnetic fields in underground pipeline | |
| CN207908434U (en) | A kind of multifunctional combination probe for pipeline detection | |
| RU119885U1 (en) | MAGNETIC DEFECTOSCOPE FOR DETECTING SURFACE PIPELINE DEFECTS | |
| WO2023055230A1 (en) | An automated inspection apparatus for nondestructive inspection of welds on pipes for detecting one or more anomalies in pipes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220803 Address after: Zaotian Village, Jiaoxi Township, Liuyang City, Changsha City, Hunan Province 410300 Patentee after: LIUYANG HUAGUAN EXPORT FIREWORKS GROUP Co.,Ltd. Address before: No. 88, Fuxing East Road, Xiangtan City, Hunan Province 410000 Patentee before: HUNAN INSTITUTE OF ENGINEERING |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 |