CN2337554Y - Real-time imaging special contrast ratio test block - Google Patents
Real-time imaging special contrast ratio test block Download PDFInfo
- Publication number
- CN2337554Y CN2337554Y CN 98237436 CN98237436U CN2337554Y CN 2337554 Y CN2337554 Y CN 2337554Y CN 98237436 CN98237436 CN 98237436 CN 98237436 U CN98237436 U CN 98237436U CN 2337554 Y CN2337554 Y CN 2337554Y
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- test block
- real
- time imaging
- test
- contrast ratio
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Abstract
The utility model relates to a real-time imaging special contrast ratio test block. A fundamental thickness face is arranged at the middle of the real-time imaging special contrast ratio test block. At least two step faces which are different from the fundamental thickness face are arranged on the periphery of the fundamental thickness face. The utility model can use one test block to simultaneously test contrast sensitivity between the step faces with different thickness and among each step face and the fundamental thickness face. The utility model has the advantage of convenient and reliable operation.
Description
Technical field is the boiler and pressure vessel Non-Destructive Testing under the utility model.
In the boiler and pressure vessel Non-Destructive Testing that China now adopts, commonly used to carrying out flaw detection, particularly a kind of real-time actinoscopy X method is widely used in the industry.This inspection technique can reflect corresponding image (this system is also referred to as the X ray industrial television) immediately along with moving of inspected parts.Because it is also at the early-stage at home that X ray TV is used in the boilers and pressure vessel check, evaluate the contrast sensitivity of this system and still do not have independent effectively still available test block.The test block of using is that linear pattern is step-like in the present domestic same industry.Use this test block, can only verification face the step of two different-thickness mutually, limitation is very big.It can't realize that the step surface of finishing different-thickness with a test block can both compare with a basic thickness face (for maximum ga(u)ge).In order to satisfy contrast sensitivity between variant thickness step surface of verification and basic thickness face, the step bar that then can only make a plurality of different demands can be finished the verification requirement by testing one by one, and such checking procedure is quite loaded down with trivial details.The test block manufacturing is also very heavy, even can't implement.
The purpose of this utility model be to provide a kind of can the variant thickness cascaded surface of verification between, the test test block of the contrast sensitivity between variant thickness cascaded surface and basic thickness face.
The purpose of this utility model is achieved in that the interposition of test test block is equipped with a basic thickness face, around basic thickness face, have at least two with thickness face cascaded surface inequality substantially.
That the shape of test block can adopt is square, circular or other polygon.Thickness, the quantity of cascaded surface are provided with on request, and its quantity is generally 3-5.
The test test block of adopting the utility model scheme to make, simple and reasonable, only use a test block just can finish the test assignment of contrast sensitivity between a plurality of different-thickness.Reach goal of the invention, saved material, simplified test process.
Using real-time actinoscopy X method, when boiler or the relevant parts of pressure vessel are carried out Non-Destructive Testing, according to the relevant boilers and pressure vessel specification technique requirement of American Society of Mechanical Engineers (AMSE) (ASME), we adopt test test block shown in Figure 1 to finish this system's contrast sensitivity verification task usually.This test test block is used with tested workpiece same material and is made, and is example with the cascaded surface that contains 4 different-thickness on every side.What be positioned at centre position maximum ga(u)ge (being expressed as T) is that basic thickness face is 100%T, and all the other 4 are faced cascaded surface thickness mutually and are followed successively by 99%T, 98%T, 97%T and 96%T.During the check system contrast sensitivity, be placed on actual tested location of workpiece place as long as should test test block by a simple beam, corresponding other related work parameter of the system that guarantees simultaneously, we just can come the boundary line between the variant cascaded surface of Direct observation by the image of the monitor in the real-time ray detection system like this, and whether the contrast sensitivity that is used for differentiating this system meets technical requirement.
Accompanying drawing is a structural representation of the present utility model.
For example the utility model is done more detailed description below in conjunction with accompanying drawing: the centre position of test test block is basic thickness face 1, and 4 cascaded surfaces 2,3,4,5 that also have nothing in common with each other with thickness face thickness inequality, between them are substantially distributing around basic thickness face.
Claims (2)
1, the special-purpose contrast test of a kind of real time imaging test block, it is characterized in that: the interposition of test test block is equipped with a basic thickness face, around basic thickness face, have at least two with thickness face cascaded surface inequality substantially.
2, the special-purpose contrast test of real time imaging according to claim 1 test block, it is characterized in that: described cascaded surface has 3-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98237436 CN2337554Y (en) | 1998-04-24 | 1998-04-24 | Real-time imaging special contrast ratio test block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98237436 CN2337554Y (en) | 1998-04-24 | 1998-04-24 | Real-time imaging special contrast ratio test block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2337554Y true CN2337554Y (en) | 1999-09-08 |
Family
ID=33985252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98237436 Expired - Lifetime CN2337554Y (en) | 1998-04-24 | 1998-04-24 | Real-time imaging special contrast ratio test block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2337554Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424417A (en) * | 2013-08-15 | 2013-12-04 | 国家电网公司 | Digital radiographic testing block for planar defects of basin-type insulators and production method |
| CN105004742A (en) * | 2015-08-05 | 2015-10-28 | 南车青岛四方机车车辆股份有限公司 | Image quality indicator and radiographic testing quality judgment method applying same |
| CN107753052A (en) * | 2017-11-07 | 2018-03-06 | 四川中测辐射科技有限公司 | A kind of x-ray imaging dynamic contrast detection plate |
-
1998
- 1998-04-24 CN CN 98237436 patent/CN2337554Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424417A (en) * | 2013-08-15 | 2013-12-04 | 国家电网公司 | Digital radiographic testing block for planar defects of basin-type insulators and production method |
| CN103424417B (en) * | 2013-08-15 | 2016-03-02 | 国家电网公司 | A kind of disc insulator planar defect digital radial detects test block and method for making |
| CN105004742A (en) * | 2015-08-05 | 2015-10-28 | 南车青岛四方机车车辆股份有限公司 | Image quality indicator and radiographic testing quality judgment method applying same |
| CN105004742B (en) * | 2015-08-05 | 2018-04-20 | 中车青岛四方机车车辆股份有限公司 | A kind of ray detection quality judging method of image quality indicator and the application image quality indicator |
| CN107753052A (en) * | 2017-11-07 | 2018-03-06 | 四川中测辐射科技有限公司 | A kind of x-ray imaging dynamic contrast detection plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |