CN104777238B - A kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block and scaling method - Google Patents
A kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block and scaling method Download PDFInfo
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- CN104777238B CN104777238B CN201510170298.5A CN201510170298A CN104777238B CN 104777238 B CN104777238 B CN 104777238B CN 201510170298 A CN201510170298 A CN 201510170298A CN 104777238 B CN104777238 B CN 104777238B
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Abstract
The present invention provides a kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block and scaling method, the test block includes thickness block and carries the supporter of the thickness block, the supporter includes counterbore and entity part, the counterbore is divided into the first groove and the second groove, and the thickness block is embedded in the first groove of the counterbore；The lower surface of the entity is provided with two tapped through holes, and the position that the tapped through hole is used for the test block is fixed；Methods described includes：Test block integrated connection is fixed in measurement tank；The reflection echo of thickness block lower surface is obtained using Ultrasonic Nondestructive equipment；Adjust the gain panel of impulse generator so that lower surface reflection echo signal highly reaches the 80% of full width；The gain of impulse generator is determined, and is used as the standard of ultrasonic probe progress subsequent workpiece detection.The present invention solves the problem of detection intensity is on the weak side when detection contact touches bridge faying face.
Description
Technical field
It is to be related to a kind of low-voltage electrical apparatus electric contact more specifically the invention belongs to ultrasonic examination equipment technology field
Ultrasonic Nondestructive test block and scaling method.
Background technology
Ultrasound examination is one of lossless detection method for being most widely used at present.Standard testing block is ultrasonic non-destructive inspection
Indispensable element during survey, it is mainly used in probe, the performance test of detector, the adjustment of sensitivity, and measurement range
Work in terms of adjustment.
However, existing calibrated bolck, when in use in the presence of it is certain the drawbacks of.For example, being popped one's head in using test block
During demarcation, the detection field particularly in low-voltage electrical apparatus electric contact, using conventional standard testing block and scaling method, after giving
Continuous test brings some inconvenience.Traditional standard testing block, when carrying out probe demarcation, pulse-echo is shown using A types
Method is detected, generally sets up the gain of impulse generator using the elevation carrection of standard testing block upper surface echo as foundation,
After gain setting, workpiece is detected with this standard.But, in Low Voltage Electrical Apparatus, during using Ultrasonic Nondestructive, lead to
What is often detected is the faying face of the contact probe bridge of electric contact, non-upper surface, then, if entering still according to original standard and method
Rower is determined, then the test signal intensity obtained can substantially weaken, and influences the judgement of test result.
The content of the invention
For above-mentioned defect of the prior art, the purpose of the present invention be a kind of low-voltage electrical apparatus electric contact ultrasonic wave of design without
Detection test block and scaling method are damaged, the test block and scaling method can solve the deficiency of traditional standard test block, can
All kinds of indexs of Fast Calibration probe, while actually detected knot will not be influenceed because of the difference in demarcation face and actually detected face
Really, it is ensured that the accuracy of test result.
To realize above-mentioned purpose, the technical solution adopted by the present invention is,
The present invention provides a kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block, including thickness block and carrying institute
The supporter of thickness block is stated, the supporter includes two parts of counterbore and entity, wherein：The counterbore include the first groove and
Second groove, first, second groove is set in turn in the upper surface of the entity by order from top to bottom；The thickness
Block is embedded in the first groove of the counterbore, and second groove to retain a gap between thickness block and entity；It is described
The lower surface both ends of entity are respectively arranged with tapped through hole, and the tapped through hole is used for the overall position of the test block and consolidated
It is fixed.
Preferably, the thickness block is shaped as cuboid or cylinder, but is not limited to cuboid or cylinder, it is necessary to protect
Demonstrate,proving the thickness block has constant uniform thickness.
Preferably, the shape of first groove and the thickness block matches.
Preferably, the length or diameter of the thickness block match with the length or diameter of first groove.
Preferably, the length or diameter of second groove are than the small 4~8mm of length or diameter of thickness block, shape and the
The shape of one groove is identical.
The present invention also provides a kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive scaling method, and methods described includes as follows
Step：
Step one：Thickness block is embedded in the first groove of supporter counterbore；
Step 2：Test block integrated connection is fixed in measurement tank；
Step 3：Using Ultrasonic Nondestructive equipment, the reflection echo of thickness block lower surface is obtained；
Step 4：Adjust the gain panel of impulse generator so that the thickness block lower surface reflection echo that step 3 is obtained
Signal height reaches the 80% of full width, and full width is 1V；
Step 5：The gain of impulse generator is determined, and is used as the standard of ultrasonic probe progress subsequent workpiece detection.
Preferably, in step 2, the test block, which is bolted, to be fixed in measurement tank.
Preferably, in step 3, pulse reflection method is shown using A types, the reflection echo of the thickness block lower surface is obtained.
By adopting the above-described technical solution, the beneficial effects of the invention are as follows：
A kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block and scaling method of the present invention, Neng Goupei
Ultrasound scanning is closed, demarcation of the ultrasonic probe to detection thickness is completed, it is particularly lossless in the ultrasonic wave of low-voltage electrical apparatus
Detection field, solves the problem of detection intensity is on the weak side when detection contact touches bridge faying face, has highly application value.
Brief description of the drawings
Fig. 1 is the test block assembly center section plan of one embodiment of the invention；
Fig. 2 is the thickness block top view and front view of one embodiment of the invention, wherein (a) is top view, (b) is main view
Figure；
Fig. 3 is the thickness block top view and front view of another embodiment of the present invention, wherein (a) is top view, (b) is main view
Figure；
Fig. 4 is the thickness block supporter profile of one embodiment of the invention；
In figure：1 is supporter, and 2 be the first fixing screwed hole, and 3 be the second groove, and 4 be thickness block, and 5 be the second fixation spiral shell
Pit, 6 be the first groove.
Embodiment
Technical scheme is further described below, the following description is only to understand technical solution of the present invention
It is used, is not used in restriction the scope of the present invention, protection scope of the present invention is defined by claims.
As Figure 1-4, the present embodiment provides a kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block, described
Test block includes thickness block 4, carries the supporter 1 of the thickness block 4, wherein：
The supporter 1 includes two parts of counterbore and entity, and the counterbore includes the first groove 6 and the second groove 3, institute
State the upper surface that first, second groove 6,3 is set in turn in the entity by order from top to bottom；The thickness block 4 is inlayed
In first groove 6, second groove 3 is used for support thickness block 4；Second groove 3 so that thickness block 4 and branch
More than 5mm gap is left between support body 1；The lower surface both ends of the entity are respectively arranged with the He of the first fixing screwed hole 2
Second fixing screwed hole 5, the effect of the fixing screwed hole 5 of the first fixing screwed hole 2 and second is by the overall position of test block
Put fixation.
As a preferred embodiment, the thickness block 4 as shown in (a) in Fig. 2, (b) is shaped as cuboid, or such as
The thickness block 4 shown in (a) in Fig. 3, (b) is shaped as cylinder, but is not limited to cuboid or cylinder, it is necessary to ensure thickness
Block 4 has constant uniform thickness.
Shape, the size of first groove 6 and the thickness block 4 match.
The length or diameter of second groove 3 are than the small 4~8mm of length or diameter of thickness block 4, shape and the first groove
6 shape is identical.
As a preferred embodiment, the length or diameter of the thickness block 4 and the length of first groove 6 or straight
Footpath is equal so that thickness block 4 is preferably installed in first groove 6.
There is provided a kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive scaling method, the side in another embodiment
Method uses above-mentioned test block, comprises the following steps：
Step one：The thickness block 4 of test block is embedded in the first groove 6 of supporter 1, so that it is whole to form test block
Body；
Step 2：Test block is fixed in measurement tank entirely through bolt connection；
Step 3：Using Ultrasonic Nondestructive equipment, pulse reflection method is shown using A types, the lower surface of thickness block 4 is obtained
Reflection echo；
Step 4：Adjust the gain panel of impulse generator so that thickness block 4 lower surface that step 3 is obtained is reflected back
Ripple signal height reaches the 80% of full width, and full width is 1V；
Step 5：The gain of impulse generator is determined, and is used as the standard of ultrasonic probe progress subsequent workpiece detection.
Set using the gain of probe now and impulse generator, it is ensured that probe obtains good when detecting workpiece
Signal and image.
A kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block and scaling method of the present invention, Neng Goupei
Ultrasound scanning is closed, demarcation of the ultrasonic probe to detection thickness is completed, it is particularly lossless in the ultrasonic wave of low-voltage electrical apparatus
Detection field, solves the problem of detection intensity is on the weak side when detection contact touches bridge faying face, has highly application value.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (7)
1. a kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block, it is characterised in that including thickness block and carrying institute
The supporter of thickness block is stated, the supporter includes two parts of counterbore and entity, wherein：The counterbore include the first groove and
Second groove, first, second groove is set in turn in the upper surface of the entity by order from top to bottom；The thickness
Block is embedded in the first groove of the counterbore, and second groove is used to retain a gap between thickness block and entity；
The lower surface both ends of the entity are respectively arranged with tapped through hole, and the tapped through hole is used for the overall position of the test block
It is fixed.
2. a kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block as claimed in claim 1, it is characterised in that institute
That states thickness block is shaped as cuboid or cylinder, and the thickness block has constant uniform thickness.
3. a kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block as claimed in claim 1, it is characterised in that institute
The shape for stating the first groove and the thickness block matches, the length or diameter of the thickness block and the length of first groove
Or diameter matches.
4. a kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block as described in claim any one of 1-3, it is special
Levy and be, the shape of second groove and the first groove matches, the length or diameter of the second groove are than the thickness block
Length or the small 4~8mm of diameter.
5. the low-voltage electrical apparatus electric contact Ultrasonic Nondestructive mark that a kind of any one of use claim 1-4 test blocks are carried out
Determine method, it is characterised in that methods described comprises the following steps：
Step one：Thickness block is embedded in the first groove of supporter counterbore；
Step 2：Test block integrated connection is fixed in measurement tank；
Step 3：Using Ultrasonic Nondestructive equipment, the reflection echo of thickness block lower surface is obtained；
Step 4：Adjust the gain panel of impulse generator so that the thickness block lower surface reflection echo signal that step 3 is obtained
The 80% of full width is highly reached, full width is 1V；
Step 5：The gain of impulse generator is determined, and is used as the standard of ultrasonic probe progress subsequent workpiece detection.
6. a kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive scaling method as claimed in claim 5, it is characterised in that step
In rapid two, the test block, which is bolted, to be fixed in measurement tank.
7. a kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive scaling method as claimed in claim 5, it is characterised in that step
In rapid three, pulse reflection method is shown using A types, the reflection echo of the thickness block lower surface is obtained.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510170298.5A CN104777238B (en) | 2015-04-10 | 2015-04-10 | A kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block and scaling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510170298.5A CN104777238B (en) | 2015-04-10 | 2015-04-10 | A kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block and scaling method |
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| CN104777238A CN104777238A (en) | 2015-07-15 |
| CN104777238B true CN104777238B (en) | 2017-08-15 |
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| CN106525984A (en) * | 2016-08-30 | 2017-03-22 | 江苏共昌轧辊股份有限公司 | Test block for ultrasonic testing |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3272530D1 (en) * | 1981-06-11 | 1986-09-18 | Bbc Brown Boveri & Cie | Ultrasonic non destructive testing of generator rotor teeth |
| JPS60260850A (en) * | 1984-06-08 | 1985-12-24 | Kawasaki Steel Corp | Testing method of split type vertical probe of automatic ultrasonic flaw detecting device for thick plate |
| JP3723555B2 (en) * | 2003-05-09 | 2005-12-07 | 川田工業株式会社 | Ultrasonic inspection method for welds |
| CN202093168U (en) * | 2011-05-13 | 2011-12-28 | 无锡德乾能源设备有限公司 | Test block of calibration ultrasonic detection instrument |
| CN103760235A (en) * | 2014-01-09 | 2014-04-30 | 鞍钢股份有限公司 | Ultrasonic flaw detection method for steel plate |
| CN203881718U (en) * | 2014-05-21 | 2014-10-15 | 吉林省电力科学研究院有限公司 | Test block for cast steel defect ultrasonic testing |
| CN204536285U (en) * | 2015-04-10 | 2015-08-05 | 上海和伍新材料科技有限公司 | A kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive test block |
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