CN206671259U - A kind of weld seam EDDY CURRENT test block - Google Patents
A kind of weld seam EDDY CURRENT test block Download PDFInfo
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- CN206671259U CN206671259U CN201720194662.6U CN201720194662U CN206671259U CN 206671259 U CN206671259 U CN 206671259U CN 201720194662 U CN201720194662 U CN 201720194662U CN 206671259 U CN206671259 U CN 206671259U
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- 238000012360 testing method Methods 0.000 title claims abstract description 93
- 239000011159 matrix material Substances 0.000 claims abstract description 34
- 238000003466 welding Methods 0.000 claims abstract description 9
- 239000011324 bead Substances 0.000 claims description 24
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 28
- 230000035945 sensitivity Effects 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 4
- 238000004088 simulation Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000009659 non-destructive testing Methods 0.000 abstract description 2
- 239000004575 stone Substances 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 21
- 239000000523 sample Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000013068 control sample Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model belongs to field of non destructive testing, especially provides a kind of weld seam EDDY CURRENT test block.The weld seam EDDY CURRENT test block includes：Test block matrix 1, test block matrix 22, weld seam 3 and some crack structtires；Test block matrix 1 and the butt welding of test block matrix 22, weld seam 3 is between test block matrix 1 and test block matrix 22.The utility model has the advantage of：The present invention can effective simulation detected pieces real crack size；The weld seam EDDY CURRENT test block of EDDY CURRENT is basically identical with the material of detected pieces, shape, condition of heat treatment and surface state, there is the artificial defect for meeting test stone thereon, can be effective for specification test sensitivity and the size of assessment.
Description
Technical field
The utility model belongs to field of non destructive testing, and in particular to a kind of Cubicle Gas-Insulated Switchgear (GIS)
Cylinder weld seam EDDY CURRENT test block.
Background technology
Cubicle Gas-Insulated Switchgear (GIS) is by breaker, disconnecting switch, earthed switch, transformer, lightning-arrest
Device, bus, connector and outlet terminal etc. form, and shell is Al-alloy casing, and conducting rod and insulating part are enclosed in inside and filled
There is the SF of certain pressure6Insulating gas is as insulation and a kind of gas insulated metal enclosed swit chgear of arc-extinguishing medium.GIS not only high pressure,
Super-pressure field is widely used, and is also used in extra-high voltage field.Compared with conventional open style transformer station, GIS's is excellent
Point is that compact-sized, floor space is small, reliability is high, configuration is flexible, easy for installation, high safety, strong environmental adaptability,
Maintenance workload very little, the maintenance intervals of its critical piece are not less than 20 years.
Transformer station's GIS device cylinder weld seam typically has two kinds at present, and one kind is that aluminum alloy plate materials roll butt welding, another
Kind is that aluminum alloy plate materials roll helical form welding.The GIS device cylinder butt weld of one 330kV transformer station, two buses is about
There is 500m length, and the GIS device cylinder spiral weld about 8000m of two buses of a 750kV transformer station grows, therefore GIS
The welding quality of equipment barrel weld seam is to ensure the key of GIS device safe operation.
Because GIS device is metal all-closed switchgear, for transporting the lossless inspection of powered GIS device cylinder weld seam
Survey, many difficulties be present, because internal have different structures, and Site Detection position limitation, ray does not apply to GIS device cylinder
The detection of body weld seam；For two kinds of magnetic, infiltration surface inspecting methods, magnetic particle method field application is very simple, can directly detect
Surface defect, but live detection can not be realized；The barrel outer surface of live GIS device scribbles a thickness heat-bodied oil paint, it is impossible to polishes,
So penetrant detecting method does not apply to yet；Detection of the ultrasonic method to weld seam internal flaw is very effective, but needs couplant, table during detection
Face paint can influence testing result, and detection efficiency is low, and the weld seam detection for just having 5000m to grow for a transformer station does not apply to.Often
It is very sensitive to cracks with surface openings to advise eddy-current technique, can also carry out detection work under the cated environment in surface, pass through contrast
Various detection methods, eddy detection technology, the purpose of GIS device cylinder weld seam live detection is can reach, but EDDY CURRENT is visited
The comparison of selection and the detection sensitivity test block of head is crucial, and eddy current inspection sensitivity test block is the important of eddy current inspection system
Part, it is to determine EDDY CURRENT sensitivity, the important tool weighed vortex validity, judge defect property and size.
Utility model content
The purpose of this utility model is to provide a kind of weld seam EDDY CURRENT test block, truly lacked in effective simulation detected pieces
Sunken size, regulation eddy current testing instrument detection sensitivity, Acceptance level is determined, ensures testing result accuracy, judge and compare
Defect property and size in seized part.
The utility model adopts the technical scheme that：
A kind of weld seam EDDY CURRENT test block, including：Test block matrix 1, test block matrix 22, weld seam 3 and some crackle knots
Structure；Test block matrix 1 and the bevel butt welding of test block matrix 22, weld seam 3 be located at test block matrix 1 and test block matrix 22 it
Between；Crack structtire is arranged on inside test block matrix and/or weld seam 3.Crack structtire is non-penetrating artificial cutting.Crack structtire bag
Include cutting 1, cutting 25, cutting 36, cutting 47, cutting 58, cutting 69.
Further, 36 deep 1mm of cutting 1, cutting 25 and cutting；25 long 10mm of cutting 1 and cutting, cutting 36
Long 20mm；Cutting 1 and bead direction angle are 0 °, are arranged on inside weld seam 3；Cutting 25 and bead direction angle are 0 °, if
Put in test block intrinsic silicon and be close to the side of weld seam 3；Cutting 36 and bead direction angle are 90 °, are arranged on inside weld seam 3；
Cutting 47, cutting 58 and cutting 69 deep 2mm, 47 long 20mm of cutting, 69 long 10mm of cutting 58 and cutting；Cutting 47 with
Bead direction angle is 90 °, is arranged on inside weld seam 3；Cutting 58 and bead direction angle are 0 °, are arranged on inside weld seam 3；
Cutting 69 and bead direction angle are 0 °, are arranged on test block intrinsic silicon and are close to the side of weld seam 3.
Preferably, cutting 1 and cutting 58 are arranged on the axis of weld seam 3.
Preferably, 30mm is separated by between cutting, the cutting at test block both ends is away from test block edge 30mm.
Preferably, crack structtire width is 0.15mm.
Preferably, the reinforcement of weld seam 3 is 2mm.
Preferably, weld seam EDDY CURRENT test block thickness 8mm.
Preferably, weld seam EDDY CURRENT test block surface is skin of paint.
The utility model has the advantage of：
(1) the utility model can effective simulation detected pieces real crack size.
(2) the weld seam EDDY CURRENT test block of EDDY CURRENT is and the material of detected pieces, shape, condition of heat treatment and surface
State is basically identical, there is the artificial defect for meeting test stone thereon, can be effective for specification test sensitivity and assessment
Size.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment 1；
Fig. 2 is the structural representation of the utility model embodiment 2；
Fig. 3 is mother metal defective waveform figure；
Fig. 4 is defect and weld seam vertical waveform figure；
Fig. 5 is defect and weld seam parallel waveform figure；
Fig. 6 is defect in weld heat-affected zone oscillogram；
Fig. 7 is that defect is welding a height of 2mm weld heat-affected zone oscillogram；
Fig. 8 is the oscillogram of scanning vertical with crackle of popping one's head in；
Fig. 9 is probe and the oscillogram of 45 ° of angle scannings of crackle.
In figure, 1 is test block matrix one, and 2 be test block matrix two, and 3 be weld seam, and 4 be cutting one, and 5 be cutting two, and 6 be cutting
Three, 7 be cutting four, and 8 be cutting five, and 9 be cutting six.
Embodiment
The utility model is further described with reference to embodiments, following examples are descriptive, are not limits
Qualitatively, it is impossible to which the scope of protection of the utility model is limited with this.
Embodiment 1
With reference to figure 1, a kind of weld seam EDDY CURRENT test block, including：If test block matrix 1, test block matrix 22, weld seam 3 and
Dry crack structtire；Test block matrix 1 and the butt welding of test block matrix 22, weld seam 3 are located at test block matrix 1 and test block matrix 22
Between；Weld reinforcement 2mm；Test block thickness 8mm；Test block surface is skin of paint.Crack structtire is non-penetrating artificial cutting, including by
Tactic cutting 1, cutting 25, cutting 36, cutting 47, cutting 69, cutting 58, the width of each cutting are
0.15mm。
36 deep 1mm of cutting 1, cutting 25 and cutting；Cutting 1 and cutting 25 long 10mm, 36 long 20mm of cutting；Carve
Groove 1 and bead direction angle are 0 °, are arranged on inside weld seam 3；Cutting 25 and bead direction angle are 0 °, are arranged on test block
Intrinsic silicon and the side for being close to weld seam 3；Cutting 36 and bead direction angle are 90 °, are arranged on inside weld seam 3.
Cutting 47, cutting 58 and cutting 69 deep 2mm, 47 long 20mm of cutting, 69 long 10mm of cutting 58 and cutting；Carve
Groove 47 and bead direction angle are 90 °, are arranged on inside weld seam 3；Cutting 58 and bead direction angle are 0 °, are arranged on weld seam
Inside 3；Cutting 69 and bead direction angle are 0 °, are arranged on test block intrinsic silicon and are close to the side of weld seam 3.
Cutting 1 and cutting 58 are arranged on the axis of weld seam 3, and cutting 1 and cutting 58 are separately positioned on test block
Both ends, away from test block edge 30mm；It is separated by 30mm between each cutting.
When using probe scanning Cubicle Gas-Insulated Switchgear (GIS) cylinder weld seam part defect, with metal
The different scanning probe LED of component defect depth viewing area is also changed.When detecting metal parts discovery defect,
Viewing area of the weld seam EDDY CURRENT test block with LED is contrasted using scanning head LED actually detected viewing area, according to weld seam
The depth of the corresponding wire cutting groove of EDDY CURRENT test block, it can substantially determine the depth of actually detected defect.
Embodiment 2
With reference to figure 2, a kind of weld seam EDDY CURRENT test block, including：If test block matrix 1, test block matrix 22, weld seam 3 and
Dry crack structtire；Test block matrix 1 and the butt welding of test block matrix 22, weld seam 3 are located at test block matrix 1 and test block matrix 22
Between；Weld reinforcement 2mm；Test block thickness 8mm；Test block surface is skin of paint.Crack structtire is non-penetrating artificial cutting, including by
Tactic cutting 1, cutting 47, cutting 25, cutting 58, cutting 36, cutting 69, the width of each cutting are
0.15mm。
36 deep 1mm of cutting 1, cutting 25 and cutting；Cutting 1 and cutting 25 long 10mm, 36 long 20mm of cutting；Carve
Groove 1 and bead direction angle are 0 °, are arranged on inside weld seam 3；Cutting 25 and bead direction angle are 0 °, are arranged on test block
Intrinsic silicon and the side for being close to weld seam 3；Cutting 36 and bead direction angle are 90 °, are arranged on inside weld seam 3.
Cutting 47, cutting 58 and cutting 69 deep 2mm, 47 long 20mm of cutting, 69 long 10mm of cutting 58 and cutting；Carve
Groove 47 and bead direction angle are 90 °, are arranged on inside weld seam 3；Cutting 58 and bead direction angle are 0 °, are arranged on weld seam
Inside 3；Cutting 69 and bead direction angle are 0 °, are arranged on test block intrinsic silicon and are close to the side of weld seam 3.
Cutting 1 and cutting 58 are arranged on the axis of weld seam 3；Cutting 1 and cutting 69 are separately positioned on test block
Both ends, away from test block edge 30mm；It is separated by 30mm between each cutting.
When using probe scanning Cubicle Gas-Insulated Switchgear (GIS) cylinder weld seam part defect, with metal
The different scanning probe LED of component defect depth viewing area is also changed.When detecting metal parts discovery defect,
Viewing area of the weld seam EDDY CURRENT test block with LED is contrasted using scanning head LED actually detected viewing area, according to weld seam
The depth of the corresponding wire cutting groove of EDDY CURRENT test block, it can substantially determine the depth of actually detected defect.
Embodiment 3
Cutting control sample defects detection analysis of oscillogram
With reference to figure 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the detection waveform map analysis of reference block 1mm depth defects different to 4 kinds,
The defects of mother metal wave sensitivity highest, waveform does not have a width, and the interference wave angle degree with weld seam in itself differs maximum, is 20 ° of left sides
It is right；Vertical and horizontal defect on weld seam by weld seam weld ripples due to being influenceed, the sensitivity decrease of remolding sensitivity mother metal defect
2dB, waveform have some width；During the defects of detecting weld heat-affected zone, except selection probe is parallel with weld seam in heat affected area
Outside (longitudinal direction) scanning, also to increase probe and the horizontal scanning of weld seam, due to selection be Φ 15mm or so flat probe, longitudinal direction
The defects of meeting missing inspection is close to weld edge during scanning, for weld seam transverse direction scanning, the weld ripples and weldering height of weld seam have an impact to detection,
From fig. 4, it can be seen that the detection sensitivity of heat affected area is minimum, waveform comparison is wide, is differed with the interference wave angle degree of weld seam in itself
For 15 ° or so；When weld seam weldering height is more than 2mm, sensitivity reduces 4dB or so again, and waveform is wider.
Embodiment 4
The regulation of sensitivity
With reference to figure 8 and Fig. 9, the regulation of sensitivity is to carry out probe by the artificial cutting of scanning in reference block,
Also increase with the increase signal of groove depth, the signal amplitude of the deep grooves of lmm is transferred to about the 50% of height all over the screen.According to existing
The field structure ripple of GIS barrel body welded seam of aluminium alloy and the feelings such as the angle of defect waves and the buried depth of EDDY CURRENT aluminum alloy defect
Condition, positive effect can be reached by selecting 100kHz or so frequency to carry out detection.Probe edge is main with being likely to occur defect during detection
Perpendicular or parallel direction movement is moved towards, the reliability of detection is highly dependent on the direction between probe coil and measured surface,
Influenceed for orthogonal bridge-type sensor sensitivity by defect and coil angle, therefore 45° angle degree should be increased in detection process
Scanning.
Claims (10)
- A kind of 1. weld seam EDDY CURRENT test block, it is characterised in that：Described weld seam EDDY CURRENT test block includes：Test block matrix one (1), test block matrix two (2), weld seam (3) and some crack structtires；Described test block matrix one (1) and test block matrix two (2) bevel butt welding, weld seam (3) are located at test block matrix one (1) Between test block matrix two (2)；The crack structtire is arranged on test block matrix and/or weld seam (3) is internal.
- 2. weld seam EDDY CURRENT test block according to claim 1, it is characterised in that：The crack structtire is non-penetrating people Work cutting.
- 3. weld seam EDDY CURRENT test block according to claim 1 or 2, it is characterised in that：The crack structtire includes cutting One (4), cutting two (5), cutting three (6), cutting four (7), cutting five (8), cutting six (9).
- 4. weld seam EDDY CURRENT test block according to claim 3, it is characterised in that：Cutting one (4), cutting two (5) and quarter The deep 1mm of groove three (6)；Cutting one (4) and the long 10mm of cutting two (5), the long 20mm of cutting three (6)；Cutting one (4) and bead direction angle are 0 °, and it is internal to be arranged on weld seam (3)；Cutting two (5) and bead direction angle are 0 °, are arranged on test block intrinsic silicon and are close to the side of weld seam (3)；Cutting three (6) and bead direction angle are 90 °, and it is internal to be arranged on weld seam (3)；Cutting four (7), cutting five (8) and the deep 2mm of cutting six (9), the long 20mm of cutting four (7), cutting five (8) and cutting six (9) Long 10mm；Cutting four (7) and bead direction angle are 90 °, and it is internal to be arranged on weld seam (3)；Cutting five (8) and bead direction angle are 0 °, and it is internal to be arranged on weld seam (3)；Cutting six (9) and bead direction angle are 0 °, are arranged on test block intrinsic silicon and are close to the side of weld seam (3).
- 5. weld seam EDDY CURRENT test block according to claim 3, it is characterised in that：Described cutting one (4) and cutting five (8) it is arranged on the axis of weld seam (3).
- 6. weld seam EDDY CURRENT test block according to claim 3, it is characterised in that：It is separated by 30mm between described cutting, The cutting at test block both ends is away from test block edge 30mm.
- 7. weld seam EDDY CURRENT test block according to claim 3, it is characterised in that：Described crack structtire width is 0.15mm。
- 8. weld seam EDDY CURRENT test block according to claim 3, it is characterised in that：Described weld seam (3) reinforcement is 2mm.
- 9. weld seam EDDY CURRENT test block according to claim 3, it is characterised in that：Described weld seam EDDY CURRENT test block is thick 8mm。
- 10. weld seam EDDY CURRENT test block according to claim 3, it is characterised in that：Described weld seam EDDY CURRENT test block Surface is skin of paint.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720194662.6U CN206671259U (en) | 2017-03-02 | 2017-03-02 | A kind of weld seam EDDY CURRENT test block |
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| CN201720194662.6U CN206671259U (en) | 2017-03-02 | 2017-03-02 | A kind of weld seam EDDY CURRENT test block |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770637A (en) * | 2017-03-02 | 2017-05-31 | 国家电网公司 | A kind of weld seam EDDY CURRENT test block and preparation method thereof |
| CN116297818A (en) * | 2023-05-17 | 2023-06-23 | 中国核工业二四建设有限公司 | Nondestructive testing method for steel lining wallboard |
-
2017
- 2017-03-02 CN CN201720194662.6U patent/CN206671259U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770637A (en) * | 2017-03-02 | 2017-05-31 | 国家电网公司 | A kind of weld seam EDDY CURRENT test block and preparation method thereof |
| CN116297818A (en) * | 2023-05-17 | 2023-06-23 | 中国核工业二四建设有限公司 | Nondestructive testing method for steel lining wallboard |
| CN116297818B (en) * | 2023-05-17 | 2023-08-04 | 中国核工业二四建设有限公司 | Nondestructive testing method for steel lining wallboard |
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