CN202486107U - Blind area test block for time of flight diffraction (TOFD) detection - Google Patents
Blind area test block for time of flight diffraction (TOFD) detection Download PDFInfo
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- CN202486107U CN202486107U CN2012200020459U CN201220002045U CN202486107U CN 202486107 U CN202486107 U CN 202486107U CN 2012200020459 U CN2012200020459 U CN 2012200020459U CN 201220002045 U CN201220002045 U CN 201220002045U CN 202486107 U CN202486107 U CN 202486107U
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- Prior art keywords
- test block
- blind area
- tofd
- area test
- detection
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- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 238000010892 electric spark Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000009659 non-destructive testing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model provides a blind area test block for time of flight diffraction (TOFD) detection. The blind area test block for TOFD detection comprises a test block body and a support body, wherein the test block body is in a wedge-shaped structure, and has an upper surface and a lower surface which are not in parallel; at least one of the upper surface and the lower surface is provided with a plurality of slots; the support body is connected with the lower surface and used for supporting the test block body. By using the blind area test block for TOFD detection, the number of test blocks needed by TOFD detection can be greatly reduced, cost is correspondingly reduced, and the blind area test block for TOFD detection is convenient to carry and use.
Description
Technical field
The utility model belongs to diffraction time difference method ultrasonic detecting technology (TOFD) field, relates in particular to the blind area test block that a kind of TOFD of being used for detects.
Background technology
Diffraction time difference method ultrasonic detecting technology (TOFD) is to be widely used in on-the-spot actual Ultrasonic Nondestructive new technology in recent years, and this technology can be used as the accurate survey instrument of very important flaw size in Non-Destructive Testing.This technology has become important Non-Destructive Testing instrument in developed regions such as the Europe and the U.S. at present, especially at key areas such as electric power, petrochemical industry, has developed into the important method that can partly replace ray detection.
Domestic in recent years every profession and trade is launched and widespread use the research of TOFD gradually; Power industry is the industry of carrying out in the whole nation early to the use of TOFD; Application to TOFD has obtained certain experience, has become the important method that vitals inherent vice accurate dimensions such as drum, pipeline, steel construction are measured at present.
But in the TOFD testing process, all there is the blind area of certain depth scope, need assesses detection system and parameter setting before detecting, write down the size of blind area, so that use additive method or means are tested to the blind area at upper surface and lower surface.
It is a kind of rectangular structure that test block is measured in existing TOFD blind area; On a surface on the rectangular parallelepiped, be processed with groove; The thickness of rectangular parallelepiped is according to measured workpiece institute specific setting; Be that to measure test block be that nominal wall thickness according to workpiece comes processing and fabricating in existing TOFD blind area, the test block of made also can only be used for the workpiece of this kind wall thickness.In other words, the workpiece of every kind of wall thickness specifications all needs special-purpose test block, and test block uses limitation big.When test, in order to adapt to the workpiece of multiple wall thickness, often need a plurality of blind areas to measure test block, will bring the cost height, carry and use problems such as inconvenience.
The utility model content
Measure test block and use that limitation is big, cost is high, carry and use problems such as inconvenience, the blind area test block that the utility model provides a kind of TOFD of being used for to detect in order to solve TOFD blind area that prior art provides.
The blind area test block that the described TOFD of being used for detects comprises: test block body and supporter; Wherein:
Described test block body is a wedge structure, and described test block body has mutual uneven upper surface and lower surface, and one of them has a plurality of grooves at least in said upper surface and the said lower surface;
Described supporter is connected in said lower surface, is used to support said test block body.
Further, a plurality of grooves of said upper surface are positioned on the straight line.
Further, a plurality of grooves of said lower surface are divided into many groups, and every group of groove is positioned on the straight line.
Further, the degree of depth of a plurality of grooves of said upper surface is different.
Further, the degree of depth of a plurality of grooves of said lower surface is different.
Further, the degree of depth of a plurality of grooves of said lower surface is identical.
Further, said upper surface groove is wedge angle groove or electric spark groove; Said lower surface channels is wedge angle groove or electric spark groove.
Further, the angle of said wedge angle groove is 60 degree.
Further, the angle of said wedge angle groove is spent less than 180 greater than 0 degree.
The beneficial effect of the utility model is: the blind area test block that is used for the TOFD detection that the utility model provided has the test block body of wedge structure; Have mutual uneven upper surface and lower surface on the test block body, this structure makes this TOFD detect can adapt to multiple thickness workpiece with the blind area test block; In addition, on the upper and lower surface of the blind area test block that this TOFD detects, also be provided with the identical or different groove of a plurality of depths, like this, more can adapt to various workpieces.In other words, the quantity of required test block when the blind area test block that utilizes this TOFD to detect can significantly reduce the TOFD detection is also with regard to the corresponding cost and easy to carry and use that reduced.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, to those skilled in the art; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
The structural representation that is used for the blind area test block that TOFD detects that Fig. 1 provides for the utility model embodiment.
The side view that is used for the blind area test block that TOFD detects that Fig. 2 provides for the utility model embodiment.
The vertical view that is used for the blind area test block that TOFD detects that Fig. 3 provides for the utility model embodiment.
The upward view that is used for the blind area test block that TOFD detects that Fig. 4 provides for the utility model embodiment.
The synoptic diagram of the wedge angle groove that is used for the blind area test block that TOFD detects that Fig. 5 provides for the utility model embodiment.
The synoptic diagram of the spark groove that is used for the blind area test block that TOFD detects that Fig. 6 provides for the utility model embodiment.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The structural representation that is used for the blind area test block that TOFD detects that Fig. 1 provides for the utility model embodiment.Fig. 2, Fig. 3, Fig. 4 are respectively this side view, top and bottom perspective views of being used for the blind area test block of TOFD detection, please combine in the lump to consult.As shown in the figure, this blind area test block that is used for the TOFD detection comprises: test block body 1 and supporter 2.Be that illustration goes out with two supporters 2 among the figure, but the application is as limit, those skilled in the art can be provided with one or more supporter according to the actual requirements.Test block body 1 is a wedge structure; Test block body 1 has mutual uneven upper surface 3 and lower surface 4; One of them has a plurality of grooves at least in said upper surface and the said lower surface; That is: perhaps only have upper surface 3 to have a plurality of grooves, perhaps lower surface 4 has a plurality of grooves, and perhaps upper surface 3 all has a plurality of grooves with lower surface 4.Shown in the figure, upper surface 3 has 4 grooves (being numbered 5,6,7,8), and lower surface 4 has a plurality of grooves, for the ease of reading, only indicates except 4 grooves (being numbered 9,10,11,12) wherein at this.Need to prove, but the application's quantity of limiting groove not, those skilled in the art can be provided with a plurality of grooves according to the actual requirements.
As shown in the figure, a plurality of grooves of upper surface 3 (5,6,7,8) are positioned on the straight line.
Like Fig. 1, shown in Figure 4, a plurality of grooves of lower surface 4 are divided into 2 groups, and every group of groove is arranged on the straight line (groove that forms delegation by 8 grooves that Fig. 4 is positioned on the top is one group, and the groove that forms delegation by 7 grooves that is positioned in 4 on the top is another group).
The degree of depth of a plurality of grooves of upper surface 3 can be identical or different.
The degree of depth of a plurality of grooves of lower surface 4 can be identical or different.
The shape of groove can have multiple on upper surface 3 and the lower surface 4.For example, wedge angle groove shown in Figure 5 or electric spark groove shown in Figure 6.Wherein, as shown in Figure 6, the electric spark groove is a square groove.As shown in Figure 5, the wedge angle groove is to have certain wedge angle (the α angle among the figure), the number of degrees at α angle can for greater than 0 degree less than 180 degree, for example: α is 60 degree.
The blind area test block that is used for the TOFD detection that the utility model provided has the test block body of wedge structure; Have mutual uneven upper surface and lower surface on the test block body; Make that carrying out the transition to a thicker end (B end shown in Figure 2) from thin end (A end as shown in Figure 2) of test block body has different thickness; This structure makes this TOFD detect can to adapt to multiple thickness workpiece with the blind area test block that (the detection blind area test block of existing TOFD is a rectangular parallelepiped; Have a kind of thickness, only can use specific workpiece); In addition, on the upper and lower surface of the blind area test block that this TOFD detects, also be provided with the identical or different groove of a plurality of depths, like this, more can adapt to various workpieces.In other words, the quantity of required test test block when the blind area test block that utilizes this TOFD to detect can significantly reduce the TOFD detection is also with regard to the corresponding cost and easy to carry and use that reduced.
It will be appreciated by those skilled in the art that accompanying drawing is the synoptic diagram of a preferred embodiment, the components and parts in the accompanying drawing might not be that enforcement the utility model is necessary.
It will be appreciated by those skilled in the art that each components and parts among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.Above-mentioned the utility model embodiment sequence number is not represented the quality of embodiment just to description.
Used specific embodiment in the utility model the principle and the embodiment of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.
Claims (9)
1. one kind is used for the blind area test block that TOFD detects, and it is characterized in that, the blind area test block that the described TOFD of being used for detects comprises: test block body and supporter; Wherein:
Described test block body is a wedge structure, and described test block body has mutual uneven upper surface and lower surface, and one of them has a plurality of grooves at least in said upper surface and the said lower surface;
Described supporter is connected in said lower surface, is used to support said test block body.
2. the blind area test block that is used for the TOFD detection as claimed in claim 1 is characterized in that a plurality of grooves of said upper surface are positioned on the straight line.
3. the blind area test block that is used for the TOFD detection as claimed in claim 1 is characterized in that, a plurality of grooves of said lower surface are divided into many groups, and every group of groove is positioned on the straight line.
4. the blind area test block that is used for the TOFD detection as claimed in claim 1 is characterized in that the degree of depth of a plurality of grooves of said upper surface is different.
5. the blind area test block that is used for the TOFD detection as claimed in claim 1 is characterized in that the degree of depth of a plurality of grooves of said lower surface is different.
6. the blind area test block that is used for the TOFD detection as claimed in claim 1 is characterized in that the degree of depth of a plurality of grooves of said lower surface is identical.
7. the blind area test block that is used for the TOFD detection as claimed in claim 1 is characterized in that said upper surface groove is wedge angle groove or electric spark groove; Said lower surface channels is wedge angle groove or electric spark groove.
8. the blind area test block that is used for the TOFD detection as claimed in claim 1 is characterized in that, the angle of said wedge angle groove is 60 degree.
9. the blind area test block that is used for the TOFD detection as claimed in claim 1 is characterized in that, the angle of said wedge angle groove is spent less than 180 greater than 0 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200020459U CN202486107U (en) | 2012-01-04 | 2012-01-04 | Blind area test block for time of flight diffraction (TOFD) detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200020459U CN202486107U (en) | 2012-01-04 | 2012-01-04 | Blind area test block for time of flight diffraction (TOFD) detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202486107U true CN202486107U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200020459U Expired - Lifetime CN202486107U (en) | 2012-01-04 | 2012-01-04 | Blind area test block for time of flight diffraction (TOFD) detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202486107U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412055A (en) * | 2013-07-17 | 2013-11-27 | 浙江方圆金属材料检测有限公司 | Comparison test block for ultrasonic detection |
| CN113740429A (en) * | 2021-09-03 | 2021-12-03 | 中国航发沈阳黎明航空发动机有限责任公司 | Method for measuring ultrasonic flaw detection blind area at step of disc forging |
-
2012
- 2012-01-04 CN CN2012200020459U patent/CN202486107U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412055A (en) * | 2013-07-17 | 2013-11-27 | 浙江方圆金属材料检测有限公司 | Comparison test block for ultrasonic detection |
| CN103412055B (en) * | 2013-07-17 | 2015-11-25 | 浙江方圆金属材料检测有限公司 | A kind of comparison test block for ultrasonic detection |
| CN113740429A (en) * | 2021-09-03 | 2021-12-03 | 中国航发沈阳黎明航空发动机有限责任公司 | Method for measuring ultrasonic flaw detection blind area at step of disc forging |
| CN113740429B (en) * | 2021-09-03 | 2024-02-02 | 中国航发沈阳黎明航空发动机有限责任公司 | Method for measuring ultrasonic flaw detection blind area at step of disc forging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: NORTH CHINA POWER SCIENCE RESEARCH INST., CO., LTD. Effective date: 20131107 Owner name: NORTH CHINA POWER SCIENCE RESEARCH INST., CO., LTD Effective date: 20131107 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100045 XICHENG, BEIJING TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131107 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: North China Electrical Power Research Institute LLC Address before: 100045 Beijing Fuxingmenwai Di Zang an Nan Xiang No. Patentee before: North China Electrical Power Research Institute LLC |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |
|
| CX01 | Expiry of patent term |