CN204359756U - A kind of porcelain insulator tilting probe measures Special test block - Google Patents
A kind of porcelain insulator tilting probe measures Special test block Download PDFInfo
- Publication number
- CN204359756U CN204359756U CN201420799289.3U CN201420799289U CN204359756U CN 204359756 U CN204359756 U CN 204359756U CN 201420799289 U CN201420799289 U CN 201420799289U CN 204359756 U CN204359756 U CN 204359756U
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- Prior art keywords
- bloom
- block
- probe
- steel
- tilting
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- 239000000523 sample Substances 0.000 title claims abstract description 58
- 239000012212 insulator Substances 0.000 title claims abstract description 13
- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229920005372 Plexiglas® Polymers 0.000 claims abstract description 23
- 239000011521 glass Substances 0.000 claims abstract description 12
- 238000002604 ultrasonography Methods 0.000 claims abstract description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 8
- 235000011187 glycerol Nutrition 0.000 claims abstract description 4
- 238000010030 laminating Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- URPFLJMILYVJPZ-UHFFFAOYSA-N benzene;2-hydroxybenzoic acid Chemical compound C1=CC=CC=C1.OC(=O)C1=CC=CC=C1O URPFLJMILYVJPZ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
Abstract
The utility model relates to a kind of porcelain insulator tilting probe and measures Special test block.This test block comprises, material is the right-angle triangle plexiglass block of the inclined angle alpha ' be 23.8 ° ~ 52.03 ° of organic glass, be the bloom of steel with the material that the shape the being located at its underpart combination that is rectangle and 1/4 circle is ship shape, plexiglass block and bloom adopt very thin glycerine couplant to fit tightly, and make ultrasound wave compressional wave can through the faying face of plexiglass block and bloom.The inclined angle alpha ' tested tilting probe should be met produce pure shear wave in steel of plexiglass block in the utility model.Adopt the utility model can realize easily and fast, measure tilting probe incidence point, time delay and incident compressional angle accurately.And human factor and gimmick can be avoided the impact of accuracy.
Description
Technical field
The utility model relates to a kind of incidence point for conveniently measuring tilting probe, the porcelain insulator tilting probe of time delay and incident angle measures Special test block.
Background technology
The in-service pillar porcelain insulator of ultrasound wave small angle longitudinal wave detection method detection of grid and insulator pillar are widely used.Utilize incident compressional angle δ can detect the defect of buried porcelain body inside in flange at the tilting probe of 3.8 ° ~ 5.67 °, and to the scanning area coverage of hazardous location much larger than transverse wave double-bevel detector and normal probe.And the accurate location of defect will be realized, accurately must measure tilting probe incidence point, time delay and incident angle.Tilting probe because of its incident angle δ too little, the highest wave amplitude scope of moving about is too narrow, and refraction in steel in length and breadth ripple exist simultaneously, cannot as common shear wave probe, by finding the highest echo of arc surface fast to record forward position and time delay accurately in CSK-I A test block; The method of current measuring probe incidence point is corner angle reflectometry, the measurement incidence point that this method can be rough fast, but human factor and gimmick impact are comparatively greatly, and cannot measure time delay and incident compressional angle simultaneously.Therefore, be necessary to develop a kind of test block, tilting probe incidence point, time delay and incident compressional angle can be measured easily and fast, accurately.
Utility model content
Of the present utility model
goal of the inventionjust be to provide the special new test block of measurement of a kind of porcelain insulator tilting probe incidence point, time delay and incident angle.
the utility model adopts following technical scheme:
A kind of porcelain insulator tilting probe of the utility model measures Special test block, it is characterized in that: this test block comprises, material is the right-angle triangle plexiglass block of the inclined angle alpha ' be 23.8 ° ~ 52.03 ° of organic glass, be the bloom of steel with the material that the shape the being located at its underpart combination that is rectangle and 1/4 circle is ship shape, one side of plexiglass block and bloom laminating is in the same size, plexiglass block and bloom adopt very thin glycerine couplant to fit tightly, and make ultrasound wave compressional wave can through the faying face of plexiglass block and bloom.The inclined angle alpha ' tested tilting probe should be met produce pure shear wave in steel of plexiglass block in the utility model.
Plexiglass block inclined angle alpha ' the best described in the utility model is 32 °, and hypotenuse is long is 471.7mm, and its bottom side length contacted with bloom is 400mm, and its vertical edge is long is 250mm.
Of the present utility model
beneficial effectfor: adopt the utility model can realize easily and fast, measure tilting probe incidence point, time delay and incident compressional angle accurately.And human factor and gimmick can be avoided the impact of accuracy.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the utility model porcelain insulator tilting probe measures test block embodiment.
1: benchmark normal shear wave probe, 2: tested tilting probe, 3: plexiglass block, 4: bloom
5: compressional wave couplant.
Embodiment
This test block of the utility model insulator tilting probe measurement test block embodiment comprises as shown in drawings, material is the right-angle triangle plexiglass block 3 of the inclined angle alpha ' be 23.8 ° ~ 52.03 ° of organic glass, with the bloom 4 that the shape the being located at its underpart combination that is rectangle and 1/4 circle the material that is ship shape is steel, one side of plexiglass block and bloom laminating is in the same size, plexiglass block 3 and bloom 4 adopt very thin glycerine couplant 5 to fit tightly, and make ultrasound wave compressional wave can through the faying face of plexiglass block 3 and bloom 4.The inclined angle alpha ' tested tilting probe should be met produce pure shear wave in steel of plexiglass block 3 in the utility model.
Inclined angle alpha ' the best of plexiglass block 3 described in the utility model is 32 °, and hypotenuse is long is 400mm, and its bottom side length contacted with bloom is 471.7mm, and its vertical edge is long is 250mm.
Principle of the present utility model and method is adopted to be:
See in accompanying drawing
α ': organic glass pitch angle.
δ: tilting probe 2 is in the incident angle at organic glass interface, and its porcelain insulator detects the scope that uses for δ=3.8 ° ~ 5.67 °.
θ: tilting probe 2 in the incident angle at steel interface, θ=α '+δ.
θ
1: tilting probe 2 first critical angle, now the compressional wave refraction angle β ' of tilting probe 1 in steel
lit is 90 °.It is pure shear wave in steel.
θ
2: tilting probe 2 second critical angle, now the shear refraction angle β ' of tilting probe 2 in steel
sit is 90 °.Incident longitudinal wave is totally reflected on the interface of steel, without refraction.
β ': refraction angle in steel.
β '
l: compressional wave refraction angle in steel.
β '
s: shear refraction angle in steel.
C
l1: the longitudinal wave velocity (2730m/s) of organic glass.
C
s1: the transverse wave velocity (1460m/s) of organic glass.
C
l2: the longitudinal wave velocity (5900m/s) of steel.
C
s2: the transverse wave velocity (3230m/s) of steel.
O ': tilting probe center wafer.
O ': the ship shaped steel block center of circle.
According to Si Nieer theorem, when θ is in first critical angle θ
1with second critical angle θ
2between time,
Only refracted shear is there is in tilting probe in steel.
For meeting above-mentioned requirements, tilting probe in the scope of the incidence angle θ at steel interface is:
First critical angle θ
1:
Sinθ
1/C
L1=Sinβ′
L/C
L2=sinβ′
S/C
S2
Make β '
l=90 °
θ
1=27.6°
Now β '
s=33.2 °
Second critical angle θ
2:
Sinθ
2/C
S1=Sinβ′
S2/C
S2
Make β '
s2=90 °
θ
2=57.7°
Therefore, what reflect in steel for making tilting probe only has pure shear wave, and eliminate compressional wave impact, tilting probe is in the scope of the incidence angle θ at steel interface: 27.6 ° ~ 57.7 °.Because of θ=α '+δ, δ=3.8 ° ~ 5.67 °, therefore the organic glass tilt angle alpha ' scope of Special test block is: α '=θ-δ=23.8 ° ~ 52.03 °
Now in steel refracted shear angle of inclination beta '
sscope is: 33.2 °-90 °.
For making numerical measuring accurate, reduce error and easy to operate, get the angle of inclination beta of refracted shear in steel '
s=45 °.
The then now corresponding incidence angle θ=36.7 ° of tilting probe at steel interface
Corresponding organic glass gradient α '=θ-δ=36.7 °-δ.
Get δ=(3.8 °+5.67 °)/2=4.7 °, then α '=32 °.
Therefore the manufactured size of tilting probe Special test block is as follows:
Inclined angle alpha '=32 ° of organic glass; ∠ A ' y ' O '=90 °+δ
The thickness T '=20mm of organic glass and steel;
A ' C '=400mm, O ' C '=O ' y=100mm, then:
A′B′=A′C′/cosα′=471.7mm；
B′C′=tanα′×A′C′=250mm；
A′O′=300mm；
First supersonic reflectoscope is adjusted to single probe pattern during test, mobile tested tilting probe 2 on A ' B ' inclined-plane, until probe positions keeps motionless after finding the highest echo.Now ultrasound wave is along o '-y '-O '-D ' ~ D '-O '-y '-o ' propagated, but D ' position cannot be determined; Again ultrasonic instrument is adjusted to dual probe pattern, tested tilting probe 2 is as transmitting probe, benchmark normal shear wave probe 1(incidence point, time delay are known) as receiving transducer, salicylic acid benzene fat is smeared as couplant between benchmark normal shear wave probe 1 and steel, moving reference normal shear wave probe 1 near Special test block circular arc is in 45 °, until find out the position of the highest wave amplitude.Now ultrasound wave is along o '-y '-O '-y-o propagated, and the position of y point is the position of D '.Connect the straight line oyO ' in benchmark normal shear wave probe incidence point y and the ship type test block center of circle, measure now refracted shear angle of inclination beta ' s in steel.
Sinθ/C
L1=Sinβ′s/C
S2
Can calculate now that tilting probe 2 is at the incidence angle θ at steel interface, δ=θ-α ', can obtain δ.
Tested tilting probe incident angle δ measures complete.
Then ∠ A ' y ' O '=90 °+δ, known;
°-α '-∠ A ' y ' O '=180, ∠ y ' O ' A '=180 °-32 °-90 °-δ=58 °-δ, also known.
In △ y ' O ' A ', utilize sine:
A′y′/sin∠y′O′A′=A′O′/sin∠A′y′O′
Then A ' y ' is known; Y ' B '=A ' B '-A ' y '=471.7-A ' y ', also known.
Distance z ' the B ' of measuring sonde leading section z ' to B '.
Then distance y ' z '=y ' B '-z ' B ' (mm) of incidence point y ' distance probe front end z '.
Tested tilting probe incidence point position measurement is complete.
Travel-time T ' total under ultrasound measuring instrument can be found dual probe pattern, the then transmission time of ultrasound wave in tested tilting probe under dual probe pattern
xjd:
xjd=T '-(y ' O '/C
s1+o ' y/C
s2+t
jz/ 2), T ', y ' O ', O ' y, t
jz, C
s1,c
s2all known, can obtain
xjd.
Under single probe pattern, the transmission time t in tested tilting probe
xjd=2
xjd
Tested tilting probe delay test is complete.
Claims (2)
1. a porcelain insulator tilting probe measures Special test block, it is characterized in that: this test block comprises, material is the right-angle triangle plexiglass block of the inclined angle alpha ' be 23.8 ° ~ 52.03 ° of organic glass, be the bloom of steel with the material that the shape the being located at its underpart combination that is rectangle and 1/4 circle is ship shape, one side of plexiglass block and bloom laminating is in the same size, plexiglass block and bloom adopt very thin glycerine couplant to fit tightly, and make ultrasound wave compressional wave can through the faying face of plexiglass block and bloom; The inclined angle alpha of plexiglass block ' tested tilting probe should be met produce pure shear wave in steel.
2. a kind of porcelain insulator tilting probe according to claim 1 measures Special test block, it is characterized in that: described plexiglass block inclined angle alpha ' be 32 °, hypotenuse is long is 471.7mm, and its bottom side length contacted with bloom is 400mm, and its vertical edge is long is 250mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420799289.3U CN204359756U (en) | 2014-12-17 | 2014-12-17 | A kind of porcelain insulator tilting probe measures Special test block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420799289.3U CN204359756U (en) | 2014-12-17 | 2014-12-17 | A kind of porcelain insulator tilting probe measures Special test block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204359756U true CN204359756U (en) | 2015-05-27 |
Family
ID=53261220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420799289.3U Expired - Fee Related CN204359756U (en) | 2014-12-17 | 2014-12-17 | A kind of porcelain insulator tilting probe measures Special test block |
Country Status (1)
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|---|---|
| CN (1) | CN204359756U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763770A (en) * | 2019-11-06 | 2020-02-07 | 南京迪威尔高端制造股份有限公司 | Drum-shaped test block |
-
2014
- 2014-12-17 CN CN201420799289.3U patent/CN204359756U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763770A (en) * | 2019-11-06 | 2020-02-07 | 南京迪威尔高端制造股份有限公司 | Drum-shaped test block |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20161217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |