CN104122326B - A kind of supersonic detection method for main steam system super pipeline pressure inlet - Google Patents
A kind of supersonic detection method for main steam system super pipeline pressure inlet Download PDFInfo
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- CN104122326B CN104122326B CN201410298742.7A CN201410298742A CN104122326B CN 104122326 B CN104122326 B CN 104122326B CN 201410298742 A CN201410298742 A CN 201410298742A CN 104122326 B CN104122326 B CN 104122326B
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Abstract
The present invention relates to a kind of novel supersonic detection method for main steam system super pipeline pressure inlet, including direct scan scanning and angle beam method scanning, scanning zone includes that pressure inlet and transition region thereof, described direct scan scanning are to use normal probe to carry out the fine scanning of circumferential and axial in the outer surface of pressure inlet, the inner surface of pressure inlet, the shape of a saddle outer surface portions of transition region；Described angle beam method scanning is that the angle probe using two kinds of different refraction angles carries out the fine scanning of circumferential and axial in the outer surface of pressure inlet, the inner surface of pressure inlet, the shape of a saddle outer surface portions of transition region.The present invention can effectively check the internal flaw of pressure inlet.
Description
Technical field
The present invention relates to a kind of lossless detection method, particularly relate to a kind of novel super for main steam system
The supersonic detection method of pipeline pressure inlet.
Background technology
Main steam system super pipeline pressure inlet uses in actual manufacture process and directly extrudes/pull out from female pipe
Method manufacture, no-welding-seam structure, the structure of pressure inlet part belongs to complicated abnormal shape forging.RCC-M (setting-out
The design of heap nuclear islands equipment and build rule) in define the ultrasound detection program of forging, but for abnormal shape
This part is also classified as by forging ultrasonic inspection reference test block and scanning mode without concrete regulation, foreign-made factory
Secure content.Present invention provide that ozzle position supersonic detection method, main docking ozzle ultrasound detection contrast
Test block specifically makes and is specified with scanning mode, can be used for inside main steam system super pipeline pressure inlet
Defects detection.
Summary of the invention
It is an object of the invention to provide a kind of ultrasound detection side for main steam system super pipeline pressure inlet
Method, thus effectively inspection pressure inlet internal flaw.
Technical scheme is as follows: a kind of ultrasonic inspection for main steam system super pipeline pressure inlet
Survey method, including direct scan scanning and angle beam method scanning, scanning zone includes pressure inlet and transition region thereof,
Described direct scan scanning is to use normal probe in the outer surface of pressure inlet, the inner surface of pressure inlet, transition
The shape of a saddle outer surface portions in district carries out the fine scanning of circumferential and axial；Described angle beam method scanning is to use
The angle probe at two kinds of different refraction angles is respectively in the outer surface of pressure inlet, the inner surface of pressure inlet, transition region
Shape of a saddle outer surface portions carry out the fine scanning of circumferential and axial.
Further, the supersonic detection method for main steam system super pipeline pressure inlet as above,
Wherein, described fine scanning refers between adjacent probes scanning line the covering of at least 20%.
Further, the supersonic detection method for main steam system super pipeline pressure inlet as above,
Wherein, the refraction angle scope of the angle probe that described angle beam method scanning uses is at 30 °～70 °.
Further, the supersonic detection method for main steam system super pipeline pressure inlet as above,
Wherein, used reference block that normal probe and angle probe are carried out sensitivity calibration before scanning, described right
More identical with main steam line material than the material of test block.
Further, the reference block that described direct scan uses is stairstepping reference block, on every one-level rank
Ladder is provided with the flat-bottom hole of a diameter of 3mm and 5mm, between flat-bottom hole bottom surface and reference block upper surface
Distance should be able to make distance-amplitude curve cover the whole thickness range at actually detected position.
Further, the reference block that described angle beam method uses is two kinds, and one is tubulose reference block,
One is cuboid reference block；Described tubulose reference block includes representing female pipe and pressure inlet respectively
Two kinds of specifications, are provided with one group of axial rectangular channel and one group of circumference in the tubulose reference block of each specification
Rectangular channel, rectangular channel size meets tubing in " design of presurized water reactor nuclear islands equipment and construction rule " and surpasses
The requirement of sound detection；Described cuboid reference block represents forging, and cuboid reference block is provided with some
Horizontal through hole.
Beneficial effects of the present invention is as follows: the present invention after taking technique scheme, in combination with
The RCC-M M1144 (the P28GH seamless forging carbon steel pipes) regulation to ultrasound detection, can be formed a set of complete
The whole ultrasound detection program being available for operation, can be used for super pipeline pressure inlet Inner Defect Testing.
Accompanying drawing explanation
Fig. 1-1 is super pipeline structural representation；
Fig. 1-2 is pressure inlet schematic diagram；
Fig. 2-1 is super pipeline direct scan reference block structural representation；
Fig. 2-2 is the side view of Fig. 2-1；
Fig. 3 super pipeline angle beam method tubulose reference block structural representation；
Fig. 4-1 is super pipeline angle beam method cube reference block structural representation；
Fig. 4-2 is the side view of Fig. 4-1；
Fig. 5 is super pipeline direct scan scanning mode schematic diagram；
Fig. 6 is super pipeline angle beam method scanning mode schematic diagram；
Fig. 7 is distance-amplitude curve (DAC curve) schematic diagram.
Detailed description of the invention
With embodiment, the present invention is described in detail below in conjunction with the accompanying drawings.
Fig. 1-1 and Fig. 1-2 is the structure chart of main steam system super pipeline and pressure inlet, in figure, and super pipe
Road 1 upper connecting tube mouth 2 uses the method manufacture directly extruding/pulling out from female pipe, solderless in actual manufacture process
Crack structure, the structure of pressure inlet 2 part belongs to complicated abnormal shape forging.Fig. 2-1, Fig. 2-2 represent ultrasound detection
With the reference block of direct scan, Fig. 3, Fig. 4-1, Fig. 4-2 represent the reference block of ultrasound detection angle beam method.
Used reference block that normal probe and angle probe are carried out sensitivity calibration before scanning.Fig. 5-Fig. 6 generation respectively
Table ultrasound detection normal probe and the scanning mode of angle probe.
As shown in Fig. 2-1, Fig. 2-2, direct scan reference block 3 uses stairstepping test block, material and main steam
Pipe material is identical, and artificial reflector 4 and 5 represents the flat-bottom hole of a diameter of 3mm and 5mm respectively, flat
The distance of bottom surface, hole distance test block upper surface is set as making the DAC curve shown in Fig. 7 can cover actual inspection
Survey the whole thickness range at position, the flat-bottom hole of a diameter of 3mm and 5mm shown in two Fig. 7 drawn
Distance-amplitude curve (DAC curve) checks and accepts sensitivity during can representing actual scanning.
As shown in Fig. 3, Fig. 4-1, Fig. 4-2, angle beam method reference block is divided into 6 and 11 two kind, material with
Main steam line material is identical, and reference block 6 is tubulose reference block, comprises two kinds of specifications, represents respectively
Female pipe and pressure inlet.The artificial reflector of each reference block is two groups of rectangular channels, and one group is axial rectangular channel 7
With 8, another group is circumference rectangular channel 9 and 10, and rectangular channel size meets RCC-M MC2500 (surpassing of tubing
Sound detection) requirement, draw distance-amplitude curve (DAC curve) shown in Fig. 7 as checking and accepting sensitivity.
Reference block 11 is the cuboid test block representing forging, and material is identical with main steam line material, manually reflects
Body is the horizontal through hole 12 of a diameter of 2mm, draws distance-amplitude curve (DAC curve) conduct shown in Fig. 7
Check and accept sensitivity.
Fig. 5 is direct scan scanning mode figure, and scanning zone includes pressure inlet and transition region thereof.Normal probe A1 should
Carry out circumferential and axial in shape of a saddle outer surface portions 13,15 and pressure inlet outer surface portions 14 finely to sweep
Look into.Meanwhile, for avoiding the impact of near field region, also add the axial and all of docking ozzle inner surface portion position 16
To fine scanning, fine scanning refers between adjacent probes scanning line the covering of at least 20%.Result after scanning
Process according to the explanation in RCC-M rule.
Fig. 6 is angle beam method scanning mode figure, and scanning zone includes pressure inlet and transition region thereof.Wherein in adapter
The A2 sensor sensitivity that mouth and transition region thereof use is that the reference block 6 representing pressure inlet is adjusted, female pipe
The reference block 6 that A3 sensor sensitivity is representative mother's pipe that section (including shape of a saddle position) uses is adjusted,
A4 sensor sensitivity is that the reference block 11 representing forging is adjusted.Probe all should carry out axial and circumferential essence
Thin method scanning shape of a saddle outer surface portions 13,15, pressure inlet outer surface portions 14, and pressure inlet inner surface
Position 16, should use the angle probe at least two difference refraction angle (scope is at 30 °～70 °) to sweep respectively
Look into.Result after scanning processes according to the explanation in RCC-M rule.
Above-mentioned to reference block and the regulation of concrete scanning mode, in conjunction with RCC-M, (presurized water reactor nuclear island machinery sets
Standby design and build rule) requirement to ultrasound detection, constitute surpassing for main steam system of complete set
The supersonic detection method of level pipeline pressure inlet.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
The spirit and scope of invention.So, if these amendments and modification to the present invention belong to right of the present invention
Require and within the scope of equivalent technology, then the present invention is also intended to comprise these change and modification.
Claims (3)
1. the supersonic detection method for main steam system super pipeline pressure inlet, it is characterised in that:
Including direct scan scanning and angle beam method scanning, scanning zone includes pressure inlet and transition region thereof, and described is straight
The method scanning of penetrating is to use normal probe at the outer surface of pressure inlet, the inner surface of pressure inlet, the saddle of transition region
Shape outer surface portions carries out the fine scanning of circumferential and axial；Described angle beam method scanning is to use two kinds of differences
The angle probe at refraction angle is respectively at the outer surface of pressure inlet, the inner surface of pressure inlet, the shape of a saddle of transition region
Outer surface portions carries out the fine scanning of circumferential and axial；Used reference block to normal probe before scanning and
Angle probe carries out sensitivity calibration, and the material of described reference block is identical with main steam line material；Described
The reference block that direct scan uses is stairstepping reference block, is provided with a diameter of 3mm on every step
With the flat-bottom hole of 5mm, the distance between flat-bottom hole bottom surface and reference block upper surface should be able to make distance-wave amplitude
Curve covers the whole thickness range at actually detected position；The reference block that described angle beam method uses is two kinds,
One is tubulose reference block, and one is cuboid reference block, and described tubulose reference block includes point
Do not represent female pipe and two kinds of specifications of pressure inlet, the tubulose reference block of each specification is provided with one group
Axially rectangular channel and one group of circumference rectangular channel；Described cuboid reference block represents forging, and cuboid contrasts
Test block is provided with some horizontal through holes.
2. the ultrasound detection side for main steam system super pipeline pressure inlet as claimed in claim 1
Method, it is characterised in that: described fine scanning refers between adjacent probes scanning line the covering of at least 20%.
3. the ultrasonic inspection for main steam system super pipeline pressure inlet as claimed in claim 1 or 2
Survey method, it is characterised in that: the refraction angle scope of the angle probe that described angle beam method scanning uses at 30 °～
70°。
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| CN201410298742.7A CN104122326B (en) | 2014-06-26 | 2014-06-26 | A kind of supersonic detection method for main steam system super pipeline pressure inlet |
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| CN201410298742.7A CN104122326B (en) | 2014-06-26 | 2014-06-26 | A kind of supersonic detection method for main steam system super pipeline pressure inlet |
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| CN104122326B true CN104122326B (en) | 2017-01-04 |
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| CN111351850B (en) * | 2018-12-20 | 2022-11-18 | 核动力运行研究所 | Ultrasonic detection method for connecting pipe welding seam of reactor pressure vessel |
| CN109696486A (en) * | 2018-12-27 | 2019-04-30 | 润电能源科学技术有限公司 | A kind of bellows detection method |
| CN110632174B (en) * | 2019-09-12 | 2022-07-12 | 上海电气上重铸锻有限公司 | Ultrasonic detection method for thin-wall variable-diameter forging |
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| CN201107301Y (en) * | 2007-10-31 | 2008-08-27 | 天津市天发重型水电设备制造有限公司 | Non-destructive test standard block |
| CN101710102B (en) * | 2009-12-16 | 2011-02-16 | 内蒙古北方重工业集团有限公司 | Ultrasonic detection method of variable-wall thick-walled pipe |
| CN102636567B (en) * | 2012-04-01 | 2014-02-26 | 南京迪威尔高端制造股份有限公司 | Oblique-incidence ultrasonic flaw detection method for barrel-type forging |
| JP5700310B2 (en) * | 2013-09-02 | 2015-04-15 | 新日鐵住金株式会社 | Abnormal diagnosis method of ultrasonic probe |
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