CN203479751U - Eddy current probe for detecting austenitic stainless steel pipe elbow - Google Patents
Eddy current probe for detecting austenitic stainless steel pipe elbow Download PDFInfo
- Publication number
- CN203479751U CN203479751U CN201320607533.7U CN201320607533U CN203479751U CN 203479751 U CN203479751 U CN 203479751U CN 201320607533 U CN201320607533 U CN 201320607533U CN 203479751 U CN203479751 U CN 203479751U
- Authority
- CN
- China
- Prior art keywords
- eddy current
- data line
- steel pipe
- stainless steel
- pipe elbow
- 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
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model provides an eddy current probe for detecting nonrust steel pipe elbow of austenite, through articulated eddy current sensor (2) of pin (3) in the fork arm of its fork support (1), radial one side is equipped with first data line plug (5) of first data line socket (6) and meets with the signal interface of eddy current sensor (2). One end of the supporting rod of the fork type support (1) is coaxially provided with a second data line socket (7), and an external eddy current detection instrument is externally connected when the fork type support is used through a second data line plug (8) arranged on the fork type support. This eddy current probe: 1. the radial scanning action is avoided, and the detection of the half cambered surface of the stainless steel pipe elbow can be realized only by moving the stainless steel pipe elbow once in the axial direction. 2. The probe can automatically adjust the rotation angle to be matched with the detected surface, the radial positioning is accurate, and the axial scanning is fully covered. 3. The structure is light and handy, convenient operation is fit for the field operation.
Description
Technical field
The utility model belongs to detecting instrument technical field, relates to a kind of eddy current probe for detection of Austenitic stainless steel pipe elbow, is applicable to scene or laboratory to Austenitic stainless steel pipe elbow examinations.
Background technology
Along with fired power generating unit is to high parameter, large capacity development, a large amount of high-grade metal pipe materials are used.As boiler heating surface pipeline, adopt in large quantity TP304H type and TP347H type Austenitic stainless steel pipe.In recent years, some 300MW unit subcritical boiler divided the Austenitic stainless steel pipe elbow of shield grip tube, after long-time running, in inside and outside curved position, produces surperficial transverse grain boundaries corrosion cracking and booster occurs; The Austenitic stainless steel pipe elbow of some 600MW unit super critical boiler high temperature superheater and high temperature reheater, not in place because of solution treatment in manufacture process, after the operation short period, with regard to producing surperficial transverse stress corrosion cracking, there is booster.At present, there is not a kind of ripe detection technique always, can effectively detect power plant boiler heating surface Austenitic stainless steel pipe elbow surface crack.Though it is highly sensitive that traditional magnetic detects for the detection of ferrimagnet surface of the work microcrack, cannot be for the detection of austenitic stainless steel; And traditional infiltration detection is only suitable for Surface-breaking defect, operation is loaded down with trivial details, inefficiency; Traditional EDDY CURRENT has higher Sensitivity to conductive material surface of the work or near surface flaw, and adopts non-contact detection mode, can realize fast detecting, to detection part surface quality, requires also low.Therefore, EDDY CURRENT is often selected to power plant boiler heating surface Austenitic stainless steel pipe elbow Site Detection, but generally adopts dot type probe to scan along peripheral helicoid at Austenitic stainless steel pipe outside surface, efficiency is low, and swing greatly, produce undesired signal, very easily cause undetected.
Utility model content
The technical problems to be solved in the utility model is, defect for prior art, a kind of eddy current probe for detection of Austenitic stainless steel pipe elbow is provided, this sonde configuration is light and handy, use it needn't spiral scan, only need to move axially once and just can realize the detection to half cambered surface of stainless-steel tube elbow along tube wall, and can effectively reduce the inhomogeneous various noise signals of bringing of elbow curvature and disturb.
The technical solution of the utility model is that described a kind of eddy current probe for detection of Austenitic stainless steel pipe elbow, referring to Fig. 1～2, has a V shape support 1.In the both sides fork arm of this V shape support 1, pass through the hinged eddy current sensor 2 of pin 3, make this eddy current sensor 2 can take pin 3 rotates freely as rotating shaft on described V shape support 1, thereby favourable accurate positioning, scanning all standing, reduces probe and disturbs because waving the signal causing.A described V shape support 1 radially side is provided with a first data line socket 6.On this first data line socket 6, be plugged with first data cable plug 5 with data line 4.The other end of the data line 4 on this first data cable plug 5 joins with the signaling interface that is arranged on the eddy current sensor 2 on described V shape support 1.Pole one end coaxial cable of described V shape support 1 is provided with a second data line socket 7 with the second data cable plug 8.This second data line socket 7 by its data line that external peripheral hardware eddy detecting instrument is drawn while using with the second data cable plug 8.
By the of the present utility model a kind of eddy current probe for detection of Austenitic stainless steel pipe elbow forming with upper member, its eddy current sensor 2 is inner generally to be rearranged by several two-dimensional array point type eddy current coils that circumferentially distribute along Austenitic stainless steel pipe outside surface, two-dimensional array point type eddy current coil is according to multifrequency Eddy hybrid technology and multichannel eddy-current technique image data, encourage each other between two and receive, and be not subject to the interference of Protean inductance value each other, effectively rejected the undesired signal that in signal and array eddy current sensor, between point type eddy current coil, mutual inductance phenomenon etc. causes lifted from that the inhomogeneous meeting of stainless-steel tube elbow curvature brings, and guarantee that the resulting impedance of two-dimensional array point type eddy current coil mates with the output impedance of multifrequency Eddy defectoscope, thereby make instrument output power maximum.And at point type eddy current coil center, add the magnetic ferrites below the diameter 0.5mm that magnetic permeability is very high carefully excellent, and being about to coil directly upper around the thin rod of magnetic ferrites, raising coil quality factor, improves the ability of telling tiny flaw.
The beneficial effects of the utility model are: 1. array eddy current sensor has covered tested Austenitic stainless steel pipe hemicycle side face, has exempted radial scan action, only needs to move axially once and can realize the detection to half cambered surface of stainless-steel tube elbow.2. the eddy current sensor of array is installed on V shape support, can make probe in operating process, automatically adjust corner and plane was seized and coincide, and radial location is accurate, axial scan all standing.3. structure is light and handy, easy to operate, is applicable to site work.
Accompanying drawing explanation
Fig. 1 is the structural representation of an a kind of specific embodiment of eddy current probe for detection of Austenitic stainless steel pipe elbow of the utility model;
Fig. 2 is the left view of a kind of eddy current probe for detection of Austenitic stainless steel pipe elbow shown in Fig. 1.
Being denoted as in above Fig. 1～2:
1-V shape support,
2-eddy current sensor,
3-pin,
4-data line,
The 5-the first data cable plug,
The 6-the first data line socket,
The 7-the second data line socket,
The 8-the second data cable plug.
Embodiment
Referring to Fig. 1～2, this embodiment of a kind of eddy current probe for detection of Austenitic stainless steel pipe elbow of the utility model, the draw materials common north steel of " U " font of commercially available being of its V shape support 1.In the both sides fork arm of this V shape support 1, by the hinged eddy current sensor 2 of pin 3, make this eddy current sensor 2 can take pin 3 and on described V shape support 1, rotate freely as rotating shaft.The HP.D.AB/Aust/L16-8 type eddy current sensor that these eddy current sensor 2 Chinese Xiamen of employing eddy detection technology research institutes produce.With the first data cable plug 5 and the first data line socket 6 thereof of data line 4, and with the second data line socket 7 of the second data cable plug 8, the ZJP-16M-8A type band data line matched plug socket that all adopts ningbo of china city Chong Qiang Electrical Appliances Co., Ltd to produce.Wherein the first data line socket 6 band data lines 4 and the first data cable plug 5 are arranged at a radially side of V shape support 1.The second data line socket 7 with the second data cable plug 8 is coaxially set in pole one end of V shape support 1, this second data line socket 7 by its data line that external peripheral hardware eddy detecting instrument is drawn while using with the second data cable plug 8.The other end of the data line 4 on above-mentioned the first data cable plug 5 joins with the signaling interface that is arranged on the eddy current sensor 2 on described V shape support 1.
On probation to be proved to be effect remarkable through manufacturing experimently for the of the present utility model a kind of eddy current probe for detection of Austenitic stainless steel pipe elbow forming thus, reaches designing requirement completely.
Claims (1)
1. the eddy current probe for detection of Austenitic stainless steel pipe elbow, it is characterized in that, it has a V shape support (1), in the both sides fork arm of this V shape support (1), pass through the hinged eddy current sensor of pin (3) (2), make this eddy current sensor (2) can take pin (3) rotates freely as rotating shaft on described V shape support (1), described V shape support (1) radially side is provided with a first data line socket (6), on this first data line socket (6), be plugged with first data cable plug (5) of a band data line (4), the other end of the data line (4) on this first data cable plug (5) joins with the signaling interface that is arranged on the eddy current sensor (2) on described V shape support (1), pole one end coaxial cable of described V shape support (1) is provided with a second data line socket (7) with the second data cable plug (8), this the second data line socket (7) by its data line that external peripheral hardware eddy detecting instrument is drawn while using with the second data cable plug (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607533.7U CN203479751U (en) | 2013-09-29 | 2013-09-29 | Eddy current probe for detecting austenitic stainless steel pipe elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607533.7U CN203479751U (en) | 2013-09-29 | 2013-09-29 | Eddy current probe for detecting austenitic stainless steel pipe elbow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203479751U true CN203479751U (en) | 2014-03-12 |
Family
ID=50228062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320607533.7U Expired - Fee Related CN203479751U (en) | 2013-09-29 | 2013-09-29 | Eddy current probe for detecting austenitic stainless steel pipe elbow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203479751U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044202A (en) * | 2015-07-17 | 2015-11-11 | 国家电网公司 | Detection system and method based on saddle-shaped open binary channel vortex probe |
| CN105044201A (en) * | 2015-07-17 | 2015-11-11 | 国家电网公司 | Saddle-shaped open vortex detection device and vortex detection method |
| CN105241952A (en) * | 2015-10-30 | 2016-01-13 | 湘潭大学 | Pipeline elbow detection method based on remote field eddy current and detection device |
| CN105548345A (en) * | 2015-12-04 | 2016-05-04 | 中国石油天然气集团公司 | Oil field fracturing elbow defect detection device and test method |
| CN112378329A (en) * | 2020-10-21 | 2021-02-19 | 中国科学院金属研究所 | Eddy current detection method for thickness of corrosion layer on inner wall of austenite pipe |
-
2013
- 2013-09-29 CN CN201320607533.7U patent/CN203479751U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044202A (en) * | 2015-07-17 | 2015-11-11 | 国家电网公司 | Detection system and method based on saddle-shaped open binary channel vortex probe |
| CN105044201A (en) * | 2015-07-17 | 2015-11-11 | 国家电网公司 | Saddle-shaped open vortex detection device and vortex detection method |
| CN105241952A (en) * | 2015-10-30 | 2016-01-13 | 湘潭大学 | Pipeline elbow detection method based on remote field eddy current and detection device |
| CN105241952B (en) * | 2015-10-30 | 2018-03-23 | 湘潭大学 | A kind of channel bend defect inspection method and detection means based on far-field eddy |
| CN105548345A (en) * | 2015-12-04 | 2016-05-04 | 中国石油天然气集团公司 | Oil field fracturing elbow defect detection device and test method |
| CN105548345B (en) * | 2015-12-04 | 2018-10-16 | 中国石油天然气集团公司 | A kind of oil field compression fracture elbow defect detecting device and the method for inspection |
| CN112378329A (en) * | 2020-10-21 | 2021-02-19 | 中国科学院金属研究所 | Eddy current detection method for thickness of corrosion layer on inner wall of austenite pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203479751U (en) | Eddy current probe for detecting austenitic stainless steel pipe elbow | |
| CN103808794B (en) | The quick detection arrays probe of externally wearing type tubing string defect based on ACFM | |
| CN103487503A (en) | Rotating magnetic field eddy current detection probe | |
| CN103499022B (en) | A kind of sensor distinguishing pipeline surfaces externally and internally corrosion default | |
| CN101893603A (en) | Thread detection device and crack detection method for drilling tool | |
| CN105241952A (en) | Pipeline elbow detection method based on remote field eddy current and detection device | |
| CN106289042A (en) | A kind of steel pipe residual wall thickness magnetization pulse eddy current measuring method and device | |
| CN105606713A (en) | Electromagnetic ultrasonic detection probe for zirconium pipe rod | |
| CN104122329B (en) | Based on the detecting sensor of magnetic striction wave guide, detection system and application | |
| CN105044201A (en) | Saddle-shaped open vortex detection device and vortex detection method | |
| CN102901769B (en) | Probe for detecting ferromagnetic substance deposition in heated surface pipe of boiler | |
| CN103969340A (en) | Complete cycle radial excitation electromagnetic ultrasonic transducer | |
| CN212964756U (en) | Self-rotating eddy current detection probe | |
| CN109115870B (en) | Annular eccentric eddy current probe and method for detecting defects of small-diameter pipe | |
| CN204228662U (en) | PCCP steel wire yarn break inspect car | |
| CN204188571U (en) | The transmitting terminal subsystem of PCCP steel wire fracture of wire detection | |
| CN111458400A (en) | Metal material defect detection system based on electromagnetic induction | |
| CN105425684B (en) | A kind of collecting method and device controlled based on FPGA | |
| CN105044202A (en) | Detection system and method based on saddle-shaped open binary channel vortex probe | |
| CN211206802U (en) | Multi-channel probe for quantitatively detecting ferromagnetic blockage in ferromagnetic stainless steel pipe | |
| CN209400472U (en) | A kind of small diameter tube vortex rotating detector | |
| CN204882462U (en) | Eddy current inspection probe with shape of a saddle structure | |
| CN202661112U (en) | High-temperature gas flow transducer | |
| CN105891607A (en) | Radial structure non-contact type fluid electrical conductivity measurement device and method | |
| CN201724928U (en) | Drilling tool thread probe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20180929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |