JP2009275702A - ガスタービンにおいて圧縮機から空気を抽出してタービン冷却空気を供給する設定値を制御するための方法及びシステム - Google Patents
ガスタービンにおいて圧縮機から空気を抽出してタービン冷却空気を供給する設定値を制御するための方法及びシステム Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/16—Control of working fluid flow
- F02C9/18—Control of working fluid flow by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
- F02C6/04—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output
- F02C6/06—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output providing compressed gas
- F02C6/08—Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output providing compressed gas the gas being bled from the gas-turbine compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/16—Cooling of plants characterised by cooling medium
- F02C7/18—Cooling of plants characterised by cooling medium the medium being gaseous, e.g. air
Abstract
【解決手段】本方法は、圧縮機の低圧段及び高圧段から加圧空気を抽出する段階と、エゼクタ(34)内において高圧段からの加圧空気に対して低圧段からの空気を付加しかつこの混合空気をタービン冷却空気として吐出させる段階と、高圧段からの抽出加圧空気のバイパス部分がエゼクタをバイパスするようにする段階(40)と、低圧段からの抽出加圧空気の流れを導通する段階(54、60、62)に応答して、タービン冷却空気の圧力を含む実圧力比(50)の設定値(52)を変化させる段階(64)と、変化設定値に応答して、実圧力比が該変化設定値に近づくようにバイパス流を調整する段階(56)とを含む。
【選択図】 図1
Description
12 多段軸流圧縮機
14 駆動シャフト
16 多段軸流タービン
18 出力シャフト
20 燃焼システム
22 出口
24 出口
26 空気導管
28 空気導管
30 弁
32 制御装置
34 エゼクタ
36 導管
37 導管
38 遮断弁
40 バイパス導管
42 バイパス弁
44 圧力及び温度センサ
46 圧力及び温度センサ
48 圧力及び温度センサ
50 S2N/CPD圧力比
52 S2N/CPD圧力比設定値
53 最低レベル
54 位置
56 位置
58 スパイク
60 開状態
62 閉状態
64 ステップ状部
66 上昇
68 低下
Claims (10)
- ガスタービン(10)の圧縮機(12)から抽出した空気によるタービン冷却空気の生成を制御する方法であって、
前記圧縮機の低圧段から及び該圧縮機の高圧段から加圧空気を抽出する段階(22、24)と、
エゼクタ(34)内において前記高圧段からの前記加圧空気に対して前記低圧段からの前記空気を付加しかつ該エゼクタから前記タービン冷却空気を吐出させる段階と、
前記高圧段からの前記抽出加圧空気のバイパス部分が前記エゼクタをバイパスしかつ該エゼクタから吐出された前記タービン冷却空気に流入するようにする段階(40、42)と、
前記低圧段から前記エゼクタへの前記抽出加圧空気の流れを遮断又は導通する段階(38、54、60、62)と、
前記低圧段からの前記抽出加圧空気の流れを導通する段階に応答して、前記タービン冷却空気の圧力を含む実圧力比(50)の設定値(52)を変化させる段階(64)と、
前記変化設定値に応答して、前記実圧力比が前記変化設定値に近づくように前記バイパス流を調整する段階(70)と、を含む、
方法。 - 前記低圧段(22)が、前記圧縮機の第10段よりも高くない段であり、また前記高圧段(24)が、前記圧縮機の第11段よりも低くない段である、請求項1記載の方法。
- 前記圧力比(50)が、前記タービン冷却空気の圧力及び前記ガスタービンの燃焼器に対する前記圧縮機の吐出口の加圧空気の圧力によるものである、請求項1または2に記載の方法。
- 前記設定値(52)を変化させる段階(64)が、前記低圧段から前記エゼクタへの前記抽出加圧空気の流れを導通する前記段階(60)と同時に該設定値を即時に上昇させかつその後該設定値を低下させるようなステップ状変化である、請求項1乃至3のいずれか1項に記載の方法。
- 前記ステップ状変化(64)が、10秒以上にわたっては起こらない、請求項4記載の方法。
- 前記ステップ状変化(64)が、前記実圧力比(50)が所定の圧力レベルになるのを防止するのに十分なほど大きい、請求項4記載の方法。
- 前記設定値(52)が、前記低圧段から前記エゼクタへの前記抽出加圧空気の流れを導通する段階(54)及びバイパス弁を調整して前記バイパス流れに対する調整を行う段階に応答して変化する、請求項1乃至6のいずれか1項に記載の方法。
- ガスタービン(10)における圧縮機(12)から抽出した空気によるタービン冷却空気を供給するためのシステムにおいて、高圧縮機段(高圧段)からの抽出加圧空気(24)を低圧縮機段(低圧段)からの抽出加圧空気(22)と混合するエゼクタ(34)をバイパスさせるように該高圧縮機段からの抽出加圧空気を制御しかつ前記バイパス抽出加圧空気及び前記エゼクタからの加圧空気の流れを混合してタービン冷却空気を形成するようになったバイパス弁(42)の位置を制御する方法であって、
前記低圧段から前記エゼクタへの前記抽出加圧空気の流れを阻止した後に該低圧段から該エゼクタへの前記抽出加圧空気の流れを遮断又は導通する段階(38、54、60、62)と、
前記低圧段からの前記抽出加圧空気の流れを導通する段階に応答して、前記タービン冷却空気の圧力を含む実圧力比(50)の設定値(52)を変化させる段階(66、68)と、
前記変化設定値に応答して、付加的バイパス空気流を可能にするように前記バイパス弁を調整し、それによって前記実圧力比が前記変化設定値に近づくようにする段階(56)と、を含む、
方法。 - 前記低圧段(22)が、前記圧縮機の第10段よりも高くない段であり、また前記高圧段(24)が、前記圧縮機の第11段よりも低くない段である、請求項8記載の方法。
- 前記圧力比(50)が、前記タービン冷却空気の圧力及び前記ガスタービンの燃焼器に対する前記圧縮機の吐出口の加圧空気の圧力によるものである、請求項8または9に記載の方法。
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US12/120,621 US8240153B2 (en) | 2008-05-14 | 2008-05-14 | Method and system for controlling a set point for extracting air from a compressor to provide turbine cooling air in a gas turbine |
US12/120,621 | 2008-05-14 |
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JP2009275702A true JP2009275702A (ja) | 2009-11-26 |
JP2009275702A5 JP2009275702A5 (ja) | 2012-06-07 |
JP5039085B2 JP5039085B2 (ja) | 2012-10-03 |
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EP (1) | EP2119892A3 (ja) |
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CN (1) | CN101581252B (ja) |
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Also Published As
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US8240153B2 (en) | 2012-08-14 |
US20120117977A1 (en) | 2012-05-17 |
EP2119892A3 (en) | 2017-11-29 |
EP2119892A2 (en) | 2009-11-18 |
JP5039085B2 (ja) | 2012-10-03 |
CN101581252A (zh) | 2009-11-18 |
CN101581252B (zh) | 2013-12-04 |
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