KR960034690A - 폐회로 증기 냉각 버켓 - Google Patents

폐회로 증기 냉각 버켓 Download PDF

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Publication number
KR960034690A
KR960034690A KR1019960002316A KR19960002316A KR960034690A KR 960034690 A KR960034690 A KR 960034690A KR 1019960002316 A KR1019960002316 A KR 1019960002316A KR 19960002316 A KR19960002316 A KR 19960002316A KR 960034690 A KR960034690 A KR 960034690A
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KR
South Korea
Prior art keywords
radial
bucket
gas turbine
outflow
airfoil
Prior art date
Application number
KR1019960002316A
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English (en)
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KR100393725B1 (ko
Inventor
시이저-프레페나 자칼라 아리엘
말로리 데이비스 리차드
아델버트 설리반 마이클
파울 치우 롱-시
스타우브 프레드
Original Assignee
제이 엘. 채스킨
제네랄 일렉트릭 캄파니
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Publication of KR960034690A publication Critical patent/KR960034690A/ko
Application granted granted Critical
Publication of KR100393725B1 publication Critical patent/KR100393725B1/ko

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Classifications

    • 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
    • F01D5/14—Form or construction
    • F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
    • 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
    • F01D5/14—Form or construction
    • F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
    • F01D5/187—Convection cooling
    • 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
    • F05D2260/00—Function
    • F05D2260/20—Heat transfer, e.g. cooling
    • F05D2260/221—Improvement of heat transfer
    • F05D2260/2212—Improvement of heat transfer by creating turbulence

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

생크부, 반경방향 팁부 및 에어포일을 가지며, 상기 에어포일은 선단 및 후단 연부와, 압력 및 흡입 측면과, 내부 유체 냉각 회로를 갖도록 된 가스 터어빈 버켓에 있어서, 상기 내부 유체 냉각 회로는 복수의 반경방향 유출 통로와 복수의 반경방향 유입 통로를 구비하는 사형 구조를 갖는다. 이 반경방향 유출 통로는 일 실시예에 있어서 약 3.3대 1의 종횡비와 0.15보다 작거나 또는 0.80보다 큰 부력 수를 갖는 형상을 지닌다. 가스 터어빈의 버켓 스테이지의 증기 냉각 통로의 구조를 결정하는 방법은, 일 실시예에 있어서, a) 상기 가스 터어빈 스테이지를 통과하는 연소가스의 매스흐름율과 연소가스 입구 온도를 측정하는 단계와, b) 상기 버켓 스테이지의 회전에 의하여 유발된 증기 냉각제내의 코리올리 및 부력 흐름 효과를 고려하는 단계와, c) 상기 반경방향 유출 통로내에 0.15보다 작거나 또는 0.80보다 큰 부력수 및 약 3.3대 1의 종횡비를 제공하기에 충분한 크기 및 형상을 갖도록 상기 반경방향 유출 냉각제 통로를 구성하는 단계를 포함한다.

Description

폐회로 증기 냉각 버켓
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 단일 사이클, 단일 축의 매우 튼튼한 가스 터어빈의 개략도, 제2도는 복합 사이클의 가스 터어빈/증기 터어빈 시스템을 가장 단순한 형태로 도시하는 개략도, 제3도는 본 발명에 따른 가스 터어빈 중 일부의 부분 단면도.

Claims (9)

  1. 생크부(shank portion), 팁부(tip portion) 및 에어포일을 가지며, 상기 에어포일은 선단 및 후단 연부와, 압력 및 흡입 측면과, 내부 유체 냉각 회로를 갖도록 된 가스 터어빈 버켓(bucket)에 있어서, 상기 내부 유체 냉각 회로는 복수의 반경방향 유출 통로와 복수의 반경방향 유입 통로를 구비하는 사형 구조를 갖고, 상기 반경방향 유출 통로는 선택된 종횡비와 관련된 바람직하지 않은 부력수를 피할 수 있는 형상으로 된 것을 특징으로 하는 가스 터어빈 버켓.
  2. 제1항에 있어서, 상기 반경방향 유입 통로는 평균하여 상기 반경방향 유출 통로보다 큰 단면적을 갖는 가스 터어빈 버켓.
  3. 생크부, 팁부 및 상기 생크부와 팁부의 사이에서 연장된 에어포일을 가지며, 상기 에어포일은 선단 및 후단 연부와, 압력 및 흡입 측면과, 내부 유체 냉각 회로를 갖도록 된 가스 터어빈 버켓에 있어서, 상기 내부 유체 냉각 회로는 복수의 반경방향 유출 통로와 복수의 반경방향 유입 통로를 구비하는 사형 구조를 갖고, 상기 반경방향 유출 통로들은 평균하여 상기 반경방향 유입 통로보다 작은 단면적을 갖도록 된 것을 특징으로 하는 가스 터어빈 버켓.
  4. 제3항에 있어서, 상기 버켓의 선단연부에 인접한 반경방향 유입통로는 상기 반경방향 유출 통로보다 작은 단면적을 갖는 가스 터어빈 버켓.
  5. 생크부, 반경방향 팁부 및 에어포일을 가지며, 상기 에어포일은 선단 및 후단 연부와, 압력 및 흡입 측면과, 내부 유체 냉각 회로를 갖도록 된 가스 터어빈 버켓에 있어서, 상기 내부 유체 냉각 회로는 복수의 반경방향 유출 통로와 복수의 반경방향 유입 통로를 구비하는 사형 구조를 갖고, 상기 반경 방향 유출 통로는 버켓의 피치선에서 약 2대 1 내지 적어도 약 3 대 1의 종횡비를 각기 갖는 것을 특징으로 하는 가스 터어빈 버켓.
  6. 가스 터어빈의 버켓 스테이지의 증기 냉각 통로의 구조를 결정하는 방법에 있어서, a) 상기 가스 터어빈 스테이지를 통과하는 연소가스의 매스 흐름율과 연소가스 입구 온도를 측정하는 단계와, b) 상기 버켓 스테이지의 회전에 의하여 유발된 증기 냉각제 내의 코리올리 및 부력 흐름 효과를 고려하는 단계와, c) 상기 반경방향 유출 통로내에 0.15보다 작거나 또는 0.80보다 큰 부력수 및 약 3.3대 1의 종횡비를 제공하는 크기 및 형상을 갖도록 상기 반경방향 유출 냉각제 통로를 구성하는 단계를 포함하는 방법.
  7. 제6항에 있어서, 상기 단계 a) 내지 c)는 상기 가스 터어빈의 제1 또는 제2스테이지 버켓에 대하여 수행되는 방법.
  8. 제6항에 있어서, 상기 버켓 스테이지내의 증기 냉각제 온도는 약 700psi의 압력에서 약 1000℉인 방법.
  9. 제1항에 있어서, 상기 종횡비는 약 3.3대 1이고, 상기 부력수는 0.15보다 작거나 또는 0.80보다 큰 가스 터어빈 버켓.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960002316A 1995-03-31 1996-01-31 가스터빈버켓 KR100393725B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/414700 1995-03-31
US08/414,700 1995-03-31
US08/414,700 US5536143A (en) 1995-03-31 1995-03-31 Closed circuit steam cooled bucket

Publications (2)

Publication Number Publication Date
KR960034690A true KR960034690A (ko) 1996-10-24
KR100393725B1 KR100393725B1 (ko) 2003-11-03

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US (1) US5536143A (ko)
EP (1) EP0735240B1 (ko)
JP (1) JP3894974B2 (ko)
KR (1) KR100393725B1 (ko)
DE (1) DE69612319T2 (ko)
IN (1) IN186935B (ko)

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EP0735240A1 (en) 1996-10-02
EP0735240B1 (en) 2001-04-04
IN186935B (ko) 2001-12-15
JP3894974B2 (ja) 2007-03-22
KR100393725B1 (ko) 2003-11-03
US5536143A (en) 1996-07-16
DE69612319D1 (de) 2001-05-10
DE69612319T2 (de) 2002-05-02
JPH08319803A (ja) 1996-12-03

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