CN104122326A - Ultrasonic inspection method for super pipeline nozzle of main steam system - Google Patents
Ultrasonic inspection method for super pipeline nozzle of main steam system Download PDFInfo
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- CN104122326A CN104122326A CN201410298742.7A CN201410298742A CN104122326A CN 104122326 A CN104122326 A CN 104122326A CN 201410298742 A CN201410298742 A CN 201410298742A CN 104122326 A CN104122326 A CN 104122326A
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- pressure inlet
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Abstract
The invention relates to an ultrasonic inspection method for a super pipeline nozzle of a main steam system. The ultrasonic inspection method comprises the steps of scanning by use of a straight beam method and scanning by use of an angle beam method; regions to be scanned include the nozzle and a transitional area of the nozzle; according to the straight beam method, peripheral and axial fine scanning is performed on the external surface and the internal surface of the nozzle, and the saddle-shaped external surface part of the transitional area by use of a straight beam probe; according to the angle beam method, peripheral and axial fine scanning is performed on the external surface and the internal surface of the nozzle, and the saddle-shaped external surface part of the transitional area by use of two angle beam probes with different refraction angles. The ultrasonic inspection method is capable of effectively inspecting internal defects of the nozzle.
Description
Technical field
The present invention relates to a kind of lossless detection method, relate in particular to a kind of novel supersonic detection method for main steam system super pipeline pressure inlet.
Background technology
Main steam system super pipeline pressure inlet adopts the method manufacture of directly pushing/pulling out from female pipe in actual manufacture process, no-welding-seam structure, and the structure of pressure inlet part belongs to complicated abnormal shape forging.In RCC-M (design of presurized water reactor nuclear islands equipment and construction rule), specify the Ultrasonic Detection program of forging, but without concrete regulation, foreign-made factory also classifies this part as secure content for formed forgings ultrasonic inspection reference test block and scanning mode.The present invention specifies ozzle position supersonic detection method, mainly docks the concrete making of ozzle Ultrasonic Detection reference block and scanning mode and specifies, can be used for main steam system super pipeline pressure inlet Inner Defect Testing.
Summary of the invention
The object of this invention is to provide a kind of supersonic detection method for main steam system super pipeline pressure inlet, thereby effectively check pressure inlet inherent vice.
Technical scheme of the present invention is as follows: a kind of supersonic detection method for main steam system super pipeline pressure inlet, comprise direct scan scanning and angle beam method scanning, scanning zone comprises pressure inlet and zone of transition thereof, and described direct scan scanning is to adopt normal probe to carry out the meticulous scanning of circumferential and axial in the outside surface of pressure inlet, the inside surface of pressure inlet, the shape of a saddle outer surface portions of zone of transition; Described angle beam method scanning is to adopt the angle probe at two kinds of different refraction angles to carry out the meticulous scanning of circumferential and axial in the outside surface of pressure inlet, the inside surface of pressure inlet, the shape of a saddle outer surface portions of zone of transition respectively.
Further, the supersonic detection method for main steam system super pipeline pressure inlet as above, wherein, described meticulous scanning refers to have 20% covering at least between adjacent probe scanning line.
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 adopts is at 30 °～70 °.
Further, the supersonic detection method for main steam system super pipeline pressure inlet as above wherein, adopted reference block to carry out sensitivity calibration to normal probe and angle probe before scanning, and the material of described reference block is identical with main steam line material.
Further, the reference block that described direct scan adopts is stepped appearance reference block, on every one-level ladder, be provided with the flat-bottom hole that diameter is 3mm and 5mm, the distance between flat-bottom hole bottom surface and reference block upper surface should be able to make distance-amplitude curve cover the actual whole thickness range that detects position.
Further, the reference block that described angle beam method adopts is two kinds, and one is tubulose reference block, and one is rectangular parallelepiped reference block; Described tubulose reference block comprises two kinds of specifications that represent respectively female pipe and pressure inlet, in the tubulose reference block of each specification, be provided with one group of axial rectangular channel and one group of axial rectangular channel, rectangular channel size meets the requirement of tubing Ultrasonic Detection in " design of presurized water reactor nuclear islands equipment and construction rule "; Described rectangular parallelepiped reference block represents forging, and rectangular parallelepiped reference block is provided with some horizontal through holes.
Beneficial effect of the present invention is as follows: the present invention is after having taked technique scheme, the regulation to Ultrasonic Detection in conjunction with RCC-M M1144 (P28GH seamless forging carbon steel pipes) simultaneously, can form the Ultrasonic Detection program of a set of complete Gong operation, can be used for super pipeline pressure inlet Inner Defect Testing.
Brief description of the drawings
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 are 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 are 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.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
Fig. 1-1 and Fig. 1-2 are the structural drawing of main steam system super pipeline and pressure inlet, in figure, super pipeline 1 upper connecting tube mouth 2 adopts the method manufacture of directly pushing/pulling out from female pipe in actual manufacture process, no-welding-seam structure, and the structure of pressure inlet 2 parts belongs to complicated abnormal shape forging.Fig. 2-1, Fig. 2-2 represent the reference block of Ultrasonic Detection direct scan, and Fig. 3, Fig. 4-1, Fig. 4-2 represent the reference block of Ultrasonic Detection angle beam method.Before scanning, adopt reference block to carry out sensitivity calibration to normal probe and angle probe.Fig. 5-Fig. 6 represents respectively the scanning mode of Ultrasonic Detection normal probe and angle probe.
As shown in Fig. 2-1, Fig. 2-2, direct scan reference block 3 adopts stepped appearance test block, material is identical with main steam line material, artificial reflecting body 4 and 5 represents that respectively diameter is the flat-bottom hole of 3mm and 5mm, flat-bottom hole bottom surface is set as making the DAC curve shown in Fig. 7 can cover the whole thickness range at actual detection position apart from the distance of test block upper surface, and the distance-amplitude curve (DAC curve) shown in two Fig. 7 that the flat-bottom hole that is 3mm and 5mm by diameter is drawn can represent in actual scanning process checks and accepts sensitivity.
As shown in Fig. 3, Fig. 4-1, Fig. 4-2, angle beam method reference block is divided into 6 and 11 two kind, and material is identical with main steam line material, and reference block 6 is tubulose reference block, comprises two kinds of specifications, represents respectively female pipe and pressure inlet.The artificial reflecting body of each reference block is two groups of rectangular channels, one group is axial rectangular channel 7 and 8, another group is circumferential rectangular channel 9 and 10, rectangular channel size meets the requirement of RCC-M MC2500 (Ultrasonic Detection of tubing), draws the distance-amplitude curve (DAC curve) shown in Fig. 7 as checking and accepting sensitivity.Reference block 11 is for representing the rectangular parallelepiped test block of forging, and material is identical with main steam line material, and artificial reflecting body is that diameter is the horizontal through hole 12 of 2mm, draws the distance-amplitude curve (DAC curve) shown in Fig. 7 as checking and accepting sensitivity.
Fig. 5 is direct scan scanning mode figure, and scanning zone comprises pressure inlet and zone of transition thereof.Normal probe A1 should carry out the meticulous scanning of circumferential and axial in shape of a saddle outer surface portions 13,15 and pressure inlet outer surface portions 14.Meanwhile, for avoiding the impact of near field region, also increased the meticulous scanning of axial and circumferential of docking ozzle inner surface portion position 16, meticulous scanning refers to have 20% covering at least between adjacent probe scanning line.Result after scanning is processed according to the explanation in RCC-M rule.
Fig. 6 is angle beam method scanning mode figure, and scanning zone comprises pressure inlet and zone of transition thereof.Be wherein to represent that the reference block of pressure inlet 6 regulates in the A2 probe sensitivity of pressure inlet and zone of transition employing thereof, the A3 probe sensitivity that female pipeline section (comprising shape of a saddle position) adopts is that the reference block 6 of the female pipe of representative regulates, and the sensitivity of A4 probe is to represent that the reference block of forging 11 regulates.Probe all should carry out the meticulous method scanning of axial and circumferential shape of a saddle outer surface portions 13,15, pressure inlet outer surface portions 14, and pressure inlet inside surface position 16, should adopt the angle probe at least two kinds of different refraction angles (scope is at 30 °～70 °) to carry out respectively scanning.Result after scanning is processed according to the explanation in RCC-M rule.
The above-mentioned regulation to reference block and concrete scanning mode, requirement in conjunction with RCC-M (design of presurized water reactor nuclear islands equipment and construction rule) to Ultrasonic Detection, has formed a set of complete supersonic detection method for main steam system super pipeline pressure inlet.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if to these amendments of the present invention with within modification belongs to the scope of the claims in the present invention and equivalent technology thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (6)
1. the supersonic detection method for main steam system super pipeline pressure inlet, it is characterized in that: comprise direct scan scanning and angle beam method scanning, scanning zone comprises pressure inlet and zone of transition thereof, and described direct scan scanning is to adopt normal probe to carry out the meticulous scanning of circumferential and axial in the outside surface of pressure inlet, the inside surface of pressure inlet, the shape of a saddle outer surface portions of zone of transition; Described angle beam method scanning is to adopt the angle probe at two kinds of different refraction angles to carry out the meticulous scanning of circumferential and axial in the outside surface of pressure inlet, the inside surface of pressure inlet, the shape of a saddle outer surface portions of zone of transition respectively.
2. the supersonic detection method for main steam system super pipeline pressure inlet as claimed in claim 1, is characterized in that: described meticulous scanning refers to have 20% covering at least between adjacent probe scanning line.
3. the supersonic detection method for main steam system super pipeline pressure inlet as claimed in claim 1 or 2, is characterized in that: the refraction angle scope of the angle probe that described angle beam method scanning adopts is at 30 °～70 °.
4. the supersonic detection method for main steam system super pipeline pressure inlet as claimed in claim 1, it is characterized in that: before scanning, adopt reference block to carry out sensitivity calibration to normal probe and angle probe, the material of described reference block is identical with main steam line material.
5. the supersonic detection method for main steam system super pipeline pressure inlet as claimed in claim 4, it is characterized in that: the reference block that described direct scan adopts is stepped appearance reference block, on every one-level ladder, be provided with the flat-bottom hole that diameter is 3mm and 5mm, the distance between flat-bottom hole bottom surface and reference block upper surface should be able to make distance-amplitude curve cover the actual whole thickness range that detects position.
6. the supersonic detection method for main steam system super pipeline pressure inlet as claimed in claim 4, is characterized in that: the reference block that described angle beam method adopts is two kinds, and one is tubulose reference block, and one is rectangular parallelepiped reference block; Described tubulose reference block comprises two kinds of specifications that represent respectively female pipe and pressure inlet, in the tubulose reference block of each specification, be provided with one group of axial rectangular channel and one group of axial rectangular channel, rectangular channel size meets the requirement of tubing Ultrasonic Detection in " design of presurized water reactor nuclear islands equipment and construction rule "; Described rectangular parallelepiped reference block represents forging, and rectangular parallelepiped reference block is provided with some horizontal through holes.
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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 CN104122326B (en) | 2017-01-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110632174A (en) * | 2019-09-12 | 2019-12-31 | 上海电气上重铸锻有限公司 | Ultrasonic detection method for thin-wall variable-diameter forging |
| CN111351850A (en) * | 2018-12-20 | 2020-06-30 | 核动力运行研究所 | Ultrasonic detection method for connecting pipe welding seam of reactor pressure vessel |
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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 |
| CN101710102A (en) * | 2009-12-16 | 2010-05-19 | 内蒙古北方重工业集团有限公司 | Ultrasonic detection method of variable-wall thick-walled pipe |
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| JP2013246181A (en) * | 2013-09-02 | 2013-12-09 | Nippon Steel & Sumitomo Metal | Abnormality diagnostic method for ultrasonic probe |
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2014
- 2014-06-26 CN CN201410298742.7A patent/CN104122326B/en active Active
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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 |
| CN101710102A (en) * | 2009-12-16 | 2010-05-19 | 内蒙古北方重工业集团有限公司 | Ultrasonic detection method of variable-wall thick-walled pipe |
| CN102636567A (en) * | 2012-04-01 | 2012-08-15 | 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 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111351850A (en) * | 2018-12-20 | 2020-06-30 | 核动力运行研究所 | Ultrasonic detection method for connecting pipe welding seam of reactor pressure vessel |
| 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 |
| CN110632174A (en) * | 2019-09-12 | 2019-12-31 | 上海电气上重铸锻有限公司 | Ultrasonic detection method for thin-wall variable-diameter forging |
| 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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| CN104122326B (en) | 2017-01-04 |
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