KR102123192B1 - 침식 손상된 증기터빈 lsb 수명연장 방법 - Google Patents
침식 손상된 증기터빈 lsb 수명연장 방법 Download PDFInfo
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- KR102123192B1 KR102123192B1 KR1020190177922A KR20190177922A KR102123192B1 KR 102123192 B1 KR102123192 B1 KR 102123192B1 KR 1020190177922 A KR1020190177922 A KR 1020190177922A KR 20190177922 A KR20190177922 A KR 20190177922A KR 102123192 B1 KR102123192 B1 KR 102123192B1
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- 230000003628 erosive effect Effects 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000010835 comparative analysis Methods 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 238000005299 abrasion Methods 0.000 claims description 6
- 230000001066 destructive effect Effects 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 5
- 230000007547 defect Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001347 Stellite Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/005—Repairing methods or devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
- F01D25/285—Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/288—Protective coatings for blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/31—Application in turbines in steam turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/10—Manufacture by removing material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/80—Repairing, retrofitting or upgrading methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/90—Coating; Surface treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
- F05D2240/122—Fluid guiding means, e.g. vanes related to the trailing edge of a stator vane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/304—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the trailing edge of a rotor blade
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
도 2에 LSB Trailing Edge 침식손상의 설명에 제공된 도면,
도 3 내지 도 4는 증기터빈 로터 저압단 LSB 침식부위가 예시된 도면,
도 5는 LSB Trailing Edge 침식손상 진행 전, 후 상태가 예시된 도면,
도 6은 유압램이나 드릴링으로도 취외하기 어려운 사례가 예시된 도면,
도 7은 본 발명의 일 실시예에 따른 침식 손상된 증기터빈 LSB 수명연장 시스템의 설명에 제공된 도면,
도 8은 신품(샘플) LSB의 3D 스캐닝 작업 모습이 예시된 도면,
도 9는 신품(샘플) LSB의 3D 스캐닝 작업을 통한 모델링 데이터가 출력된 모습이 예시된 도면,
도 10은, 신품(샘플) LSB의 고유진동수 측정 작업의 설명에 제공된 도면,
도 11은, 기존 LSB의 침식손상 부위를 제거 가공하기 전에, Marking Line을 표시하는 모습이 예시된 도면,
도 12는, 기존 LSB의 침식손상 부위의 블렌딩(제거 가공)이 완료된 상태가 예시된 도면,
도 13은, LSB Trailing Edge 블렌딩 전, 후 상태가 도시된 도면,
도 14는, 기존 LSB의 블렌딩 부위에 비파괴검사를 수행하는 모습이 예시된 도면,
도 15는 기존 LSB의 블렌딩 부위에 내마모 코팅 작업을 수행하는 모습이 예시된 도면,
도 16은, 내마모 코팅 작업이 완료된 상태의 기존 LSB가 예시된 도면,
도 17은 LSB Trailing Edge 내마모 코팅 전, 후 상태가 도시된 도면, 그리고
도 18은, 본 발명의 일 실시예에 따른 침식 손상된 증기터빈 LSB 수명연장 방법의 설명에 제공된 흐름도이다.
120 : 분석부
130 : 저장부
Claims (7)
- LSB(Last Stage Blade) 샘플을 3D 스캐닝 하여, LSB 모델링을 수행하는 단계;
LSB 샘플의 고유진동수를 측정하고, 측정된 제1 고유진동수 데이터와 LSB 모델링 데이터를 이용하여 LSB 동특성을 분석하는 단계;
기존 LSB의 고유진동수를 측정하여, 측정된 제2 고유진동수 데이터를 제1 고유진동수 데이터와 비교 분석하는 단계; 및
비교 분석 결과를 기반으로 기존 LSB의 침식손상 부위를 제거 가공하는 단계;를 포함하고,
비교 분석 단계는,
측정된 제2 고유진동수 데이터와 제1 고유진동수 데이터와 비교 분석하여 공진영역에 포함되어 있는지 여부를 확인하며,
침식 손상된 증기터빈 LSB 수명연장 방법은,
기존 LSB의 Trailing Edge의 침식 손상부위를 일정하게 제거하기 위하여, 형판(Template)를 활용하여 일정하게 Marking Line을 표시하고, 침식 손상부위의 제거 작업을 수행하는 것을 특징으로 하는 침식 손상된 증기터빈 LSB 수명연장 방법.
- 삭제
- 삭제
- 청구항 1에 있어서,
침식 손상부위의 제거 작업이 완료되면, 제거 작업이 완료된 LSB의 치수 및 형상변화에 따라 고유진동수의 변화 가능성을 고려하여, 고유진동수를 재차 측정하는 단계;를 더 포함하는 것을 특징으로 하는 침식 손상된 증기터빈 LSB 수명연장 방법.
- 청구항 1에 있어서,
침식 손상부위의 제거 작업이 완료되면, 잔류 결함여부를 확인하기 위하여, 비파괴검사를 수행하는 단계;를 더 포함하는 것을 특징으로 하는 침식 손상된 증기터빈 LSB 수명연장 방법.
- 청구항 1에 있어서,
침식 손상부위의 제거 작업이 완료되면, 제거 작업이 완료된 LSB의 Trailing Edge 부위에 내마모 코팅을 수행하는 단계;를 더 포함하는 것을 특징으로 하는 침식 손상된 증기터빈 LSB 수명연장 방법. - 삭제
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20050016002A (ko) * | 2003-08-05 | 2005-02-21 | 유나이티드 테크놀로지스 코포레이션 | 터빈 요소 수리 |
EP2299248A1 (de) * | 2009-09-14 | 2011-03-23 | Siemens Aktiengesellschaft | Verfahren zur Ermittlung von Rissen in Turbinenschaufeln |
KR101733361B1 (ko) * | 2016-10-17 | 2017-05-24 | 한전케이피에스 주식회사 | 로터 해석 방법 |
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KR20050016002A (ko) * | 2003-08-05 | 2005-02-21 | 유나이티드 테크놀로지스 코포레이션 | 터빈 요소 수리 |
EP2299248A1 (de) * | 2009-09-14 | 2011-03-23 | Siemens Aktiengesellschaft | Verfahren zur Ermittlung von Rissen in Turbinenschaufeln |
KR101733361B1 (ko) * | 2016-10-17 | 2017-05-24 | 한전케이피에스 주식회사 | 로터 해석 방법 |
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