CN103257183B - A kind of ultrasonic detection method of the steam turbine rotor shaft with center pit - Google Patents
A kind of ultrasonic detection method of the steam turbine rotor shaft with center pit Download PDFInfo
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- CN103257183B CN103257183B CN201310109509.5A CN201310109509A CN103257183B CN 103257183 B CN103257183 B CN 103257183B CN 201310109509 A CN201310109509 A CN 201310109509A CN 103257183 B CN103257183 B CN 103257183B
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- 238000001514 detection method Methods 0.000 title claims abstract description 12
- 239000000523 sample Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000002604 ultrasonography Methods 0.000 claims description 8
- 238000003491 array Methods 0.000 claims description 3
- 210000000481 breast Anatomy 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 4
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 4
- 238000012360 testing method Methods 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of ultrasonic detection method of the steam turbine rotor shaft with center pit, it is that the cancave array probe of employing 360 ° connects phased-array ultrasonic defectoscope and detects the steam turbine rotor shaft with center pit, the method instrument portable convenient, can carry out nondestructive examination to the turbine rotor of band center pit fast and effectively.
Description
Technical field
The present invention relates to a kind of ultrasonic detection method of the steam turbine rotor shaft with center pit.
Technical background
DL/T438-2009 " fuel-burning power plant alloying technology supervision code " 12.2.4 article requires: the 1st A level maintenance after unit operation 100,000 h, carries out nondestructive examination depending on status of equipment to rotor macro-axis; With the turbine rotor of center pit, the methods such as endoscope, ultrasound wave, eddy current can be adopted to test to rotor.The turbine rotor of this code to band center pit clearly proposes the requirement of ultrasonic testing.But rotor many employings mechanical scanning of ultrasound examination band center pit at present, the equipment controlling mechanical scanning is huge, takes time and effort in the detection.Therefore the present invention proposes the method that phased array detects turbine rotor.
Summary of the invention
The invention provides a kind of ultrasonic detection method of the steam turbine rotor shaft with center pit, use the method can the turbine rotor of detection zone center pit fast and effectively.
The present invention adopts following technical scheme:
A ultrasonic detection method for steam turbine rotor shaft with center pit, comprises the steps:
(1) select phased-array ultrasonic defectoscope and cancave array probe, wherein cancave array probe is 360 ° of recessed battle arrays, recessed battle array diameter 1 ~ 2mm less of detected steam turbine rotor shaft center-hole diameter;
(2) cancave array probe is placed on the porch of armature spindle center pit, by couplant, cancave array probe is fully contacted with the arc surface of center pit;
(3) the focusing rule setting phased-array ultrasonic defectoscope is one-dimensional linear scanning, carries out the electronic scanning of same depth, when scanning 360 °, namely complete the ultrasound examination of armature spindle detection segment along probe circumferential position;
(4) move cancave array probe along armature spindle center pit axial location, carry out scanning according to checking method another section to armature spindle of step (2) and step (3); In mobile cancave array probe process, the scrambler record probe displacement of phased-array ultrasonic defectoscope, detector record scanning angle;
(5) repeat step (4), until probe moves to the bosom of rotor bore, then complete the ultrasound examination to whole roots rotor axle.
The invention has the beneficial effects as follows: the inventive method instrument portable convenient, nondestructive examination can be carried out to the turbine rotor of band center pit fast and effectively.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the inventive method;
Fig. 2 is the left view of Fig. 1.
In FIG: 1 armature spindle, 2 center pits, 3 cancave array probes.
Embodiment
Below in conjunction with accompanying drawing, the inventive method is described in detail.
The inventive method comprises the following steps:
(1) phased-array ultrasonic defectoscope and cancave array probe is selected, wherein cancave array probe 3 is 360 ° of recessed battle arrays, as shown in Figure 2, recessed battle array diameter 1 ~ 2mm less of the diameter of the center pit 2 of detected steam turbine rotor shaft 1, can be placed in center pit just to make cancave array probe 3;
(2) be connected with phased-array ultrasonic defectoscope by cancave array probe 3, cancave array probe 3 is placed on the porch of the center pit 2 of armature spindle 1, as shown in Figure 1, by couplant, cancave array probe 3 is fully contacted with the arc surface of center pit 2;
(3) the focusing rule setting phased-array ultrasonic defectoscope is one-dimensional linear scanning, carries out the electronic scanning of same depth, when scanning 360 °, namely complete the ultrasound examination of armature spindle detection segment along probe circumferential position;
(4) as shown in Figure 1, along armature spindle center pit axial location (i.e. direction shown in arrow) mobile cancave array probe 3, the distance of movement is no more than the length of cancave array probe concave battle array wafer, carries out scanning according to checking method another section to armature spindle of step (2) and step (3); In mobile cancave array probe process, the scrambler record probe displacement of phased-array ultrasonic defectoscope, detector record scanning angle;
(5) repeat step (4), until cancave array probe 3 moves to the bosom of center pit 2, then complete the ultrasound examination to whole roots rotor axle 1.
Claims (1)
1. a ultrasonic detection method for the steam turbine rotor shaft with center pit, is characterized in that comprising the steps:
(1) select phased-array ultrasonic defectoscope and cancave array probe, wherein cancave array probe is 360 ° of recessed battle arrays, recessed battle array diameter 1 ~ 2mm less of detected steam turbine rotor shaft center-hole diameter;
(2) cancave array probe is placed on the porch of armature spindle center pit, by couplant, cancave array probe is fully contacted with the arc surface of center pit;
(3) the focusing rule setting phased-array ultrasonic defectoscope is one-dimensional linear scanning, carries out the electronic scanning of same depth, when scanning 360 °, namely complete the ultrasound examination of armature spindle detection segment along probe circumferential position;
(4) move cancave array probe along armature spindle center pit axial location, carry out scanning according to checking method another section to armature spindle of step (2) and step (3); In mobile cancave array probe process, the scrambler record probe displacement of phased-array ultrasonic defectoscope, detector record scanning angle;
(5) repeat step (4), until probe moves to the bosom of rotor bore, then complete the ultrasound examination to whole roots rotor axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310109509.5A CN103257183B (en) | 2013-04-01 | 2013-04-01 | A kind of ultrasonic detection method of the steam turbine rotor shaft with center pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310109509.5A CN103257183B (en) | 2013-04-01 | 2013-04-01 | A kind of ultrasonic detection method of the steam turbine rotor shaft with center pit |
Publications (2)
| Publication Number | Publication Date |
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| CN103257183A CN103257183A (en) | 2013-08-21 |
| CN103257183B true CN103257183B (en) | 2016-01-27 |
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| CN201310109509.5A Active CN103257183B (en) | 2013-04-01 | 2013-04-01 | A kind of ultrasonic detection method of the steam turbine rotor shaft with center pit |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103901101A (en) * | 2014-03-31 | 2014-07-02 | 国家电网公司 | Ultrasonic testing method of steam turbine rotor provided with center hole |
| CN105259253B (en) * | 2015-11-06 | 2018-09-07 | 国网山东省电力公司电力科学研究院 | A kind of phased array detection method of main inlet throttle-stop valve valve rod |
| CN105911145B (en) * | 2016-06-06 | 2018-12-11 | 浙江省特种设备检验研究院 | A kind of heat exchanger tube sheet fillet weld ultrasonic phase array detection method and device |
| CN106645416B (en) * | 2016-11-29 | 2019-07-12 | 北京卫星制造厂 | A kind of thin-walled CFRP inside pipe fitting quality ultrasound phased array on-line testing method |
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| CN101614704A (en) * | 2008-06-26 | 2009-12-30 | 株式会社东芝 | Flaw detection testing method |
| CN102175766A (en) * | 2010-12-27 | 2011-09-07 | 中国科学院声学研究所 | On-line detection system and detection method for pipe (bar) ultrasonic phased array |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57122360A (en) * | 1981-01-23 | 1982-07-30 | Hitachi Ltd | Ultrasonic wave flaw detecting device for inner surface of small pipe |
| US6813950B2 (en) * | 2002-07-25 | 2004-11-09 | R/D Tech Inc. | Phased array ultrasonic NDT system for tubes and pipes |
| US7428842B2 (en) * | 2005-06-20 | 2008-09-30 | Siemens Power Generation, Inc. | Phased array ultrasonic testing system and methods of examination and modeling employing the same |
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2013
- 2013-04-01 CN CN201310109509.5A patent/CN103257183B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614704A (en) * | 2008-06-26 | 2009-12-30 | 株式会社东芝 | Flaw detection testing method |
| CN102175766A (en) * | 2010-12-27 | 2011-09-07 | 中国科学院声学研究所 | On-line detection system and detection method for pipe (bar) ultrasonic phased array |
Non-Patent Citations (3)
| Title |
|---|
| 影响转子中心孔超声波探伤效果的因素及可检率探讨;吉桂琴等;《大电机技术》;20060430(第2期);第35-37页 * |
| 汽轮机转子中心孔超声成像检测方法研究;滕永平等;《无损检测》;20020430;第24卷(第4期);第151-153页 * |
| 海底管道检测超声探头及探头阵列的设计;陆唯一;《中国优秀博硕士学位论文全文数据库 (硕士) 工程科技Ⅱ辑》;20070615(第06期);论文第45页第5.1节、第47页第5.3节、第49页第5.4.1节、第50页第5.4.2节及图5-4和图5-6 * |
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| CN103257183A (en) | 2013-08-21 |
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Inventor after: Wang Qing Inventor after: Hao Xiaojun Inventor after: Liu Changfu Inventor before: Hao Xiaojun Inventor before: Liu Changfu |
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