JP5576676B2 - ガスタービンエンジンの逆火を検出するための方法 - Google Patents
ガスタービンエンジンの逆火を検出するための方法 Download PDFInfo
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- JP5576676B2 JP5576676B2 JP2010044836A JP2010044836A JP5576676B2 JP 5576676 B2 JP5576676 B2 JP 5576676B2 JP 2010044836 A JP2010044836 A JP 2010044836A JP 2010044836 A JP2010044836 A JP 2010044836A JP 5576676 B2 JP5576676 B2 JP 5576676B2
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- gas turbine
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- 238000000034 method Methods 0.000 title claims description 34
- 238000002485 combustion reaction Methods 0.000 claims description 68
- 238000012544 monitoring process Methods 0.000 claims description 13
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- 239000003570 air Substances 0.000 description 7
- 239000000567 combustion gas Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
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- 238000013461 design Methods 0.000 description 3
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 2
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- 229910052739 hydrogen Inorganic materials 0.000 description 2
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000001228 spectrum Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000003225 biodiesel Substances 0.000 description 1
- 239000002551 biofuel Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
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- 238000013016 damping Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
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Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
- F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
- F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
-
- 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
- F05D2260/80—Diagnostics
-
- 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
- F05D2270/00—Control
- F05D2270/70—Type of control algorithm
- F05D2270/71—Type of control algorithm synthesized, i.e. parameter computed by a mathematical model
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2241/00—Applications
- F23N2241/20—Gas turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
- Regulation And Control Of Combustion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Description
12 圧縮機
14 燃焼器
16 タービン
18 燃焼室
20 ガスタービン監視及び制御システム
22 データ取得及び分析ステム(DAAS)
24 燃焼ダイナミクスシミュレーション及び予測システム(CDSPS)
26 逆火検出システム(FDS)
28 圧縮機
30 タービン
32 燃料供給システム
34 燃焼器
35 燃焼器缶
36 燃焼器センサ
38 信号
40 運転状態
42 DAASからの出力
44 CDSPSからの出力
46 ガスタービンコントローラ
50 エイリアシング防止フィルタ
52 バンドパスフィルタ
54 ブロック
56 高速フーリエ変換アナライザ
58 ブロック
60 ブロック
62 物理ベースの燃焼ダイナミクス予測ツール
64 燃焼ダイナミクスモデリングツール
66 ブロック
68 ブロック
70 ブロック
72 ブロック
80 ガスタービン監視及び制御方法
82 ブロック
84 ブロック
86 ブロック
88 ブロック
90 ブロック
92 ブロック
94 ブロック
96 ブロック
100 グラフ
102 信号
104 X軸
106 Y軸
108 1000ヘルツの周波数
Claims (7)
- ガスタービンを監視し制御するための方法であって、
ガスタービンの運転状態をリアルタイムで取得する段階と、
ガスタービンの運転状態とガスタービンのモデリングツールとを使用して、燃焼器における燃焼ダイナミクスの周波数と振幅をリアルタイムで予測する段階と、
前記燃焼器における燃焼ダイナミクスを表すセンサからの信号を受信する段階と、
前記受信信号の周波数が正常運転状態時における前記予測された周波数と一致しない場合に逆火を検出する段階と、
逆火が検出された場合にはガスタービンを制御する段落と、
を含む方法。 - 前記ガスタービンの運転状態を取得する段階が、前記ガスタービンの圧縮機、燃焼器、及びタービンの運転状態を取得する段階を含む、請求項1に記載の方法。
- 前記ガスタービンモデリングツールが、ガスタービン幾何形状モデル、ガスタービン火焔・音響モデル、ガスタービン減衰モデル、ガスタービン構成要素モデル、ガスタービン境界条件、又はこれらの組み合わせを含む、請求項1または2に記載の方法。
- 前記予測周波数及び振幅が、前記燃焼器の正常運転状態を示す、前記燃焼器おける指定火焔位置と一致する、請求項1から3のいずれかに記載の方法。
- 前記周波数及び振幅を予測する段階が、物理ベースの燃焼ダイナミクスモデルを使用して前記周波数及び振幅を予測する段階を含む、請求項1から4のいずれかに記載の方法。
- 前記センサが、動的圧力センサ又は火焔センサを含む、請求項1から5のいずれかに記載の方法。
- 前記信号を受信する段階が、
前記受信信号を濾波する段階と、
前記濾波信号を周波数領域信号に変換する段階と、
ピーク周波数及び該ピーク周波数の振幅を決定する段階と、
を含む、請求項1から6のいずれかに記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/434,695 | 2009-05-04 | ||
US12/434,695 US8260523B2 (en) | 2009-05-04 | 2009-05-04 | Method for detecting gas turbine engine flashback |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010261434A JP2010261434A (ja) | 2010-11-18 |
JP5576676B2 true JP5576676B2 (ja) | 2014-08-20 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2010044836A Active JP5576676B2 (ja) | 2009-05-04 | 2010-03-02 | ガスタービンエンジンの逆火を検出するための方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8260523B2 (ja) |
EP (1) | EP2249005B1 (ja) |
JP (1) | JP5576676B2 (ja) |
CN (1) | CN101881221B (ja) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7942038B2 (en) * | 2009-01-21 | 2011-05-17 | General Electric Company | Systems and methods of monitoring acoustic pressure to detect a flame condition in a gas turbine |
US8510013B2 (en) * | 2009-05-04 | 2013-08-13 | General Electric Company | Gas turbine shutdown |
US8260523B2 (en) * | 2009-05-04 | 2012-09-04 | General Electric Company | Method for detecting gas turbine engine flashback |
US9353947B2 (en) * | 2009-06-11 | 2016-05-31 | General Electric Company | Combustor flashback/flame holding detection via temperature sensing |
RU2011112991A (ru) * | 2011-04-06 | 2012-10-20 | Дженерал Электрик Компани (US) | Интегрированная клапанная система регулирования подачи топлива (варианты) и способ подачи топлива к нескольким топливным соплам топки |
EP2520863B1 (en) | 2011-05-05 | 2016-11-23 | General Electric Technology GmbH | Method for protecting a gas turbine engine against high dynamical process values and gas turbine engine for conducting said method |
US20130006581A1 (en) * | 2011-06-30 | 2013-01-03 | General Electric Company | Combustor health and performance monitoring system for gas turbines using combustion dynamics |
WO2013077861A1 (en) * | 2011-11-22 | 2013-05-30 | Electric Power Research Institute, Inc. | System and method for anomaly detection |
CN102514766B (zh) * | 2011-12-26 | 2013-06-05 | 宁波和利氢能源科技有限公司 | 一种用于安瓿灌封的氢氧焰安全熄火装置 |
US8725384B2 (en) * | 2012-02-10 | 2014-05-13 | General Electic Company | Detection system and method to detect flame holding event |
US9335046B2 (en) * | 2012-05-30 | 2016-05-10 | General Electric Company | Flame detection in a region upstream from fuel nozzle |
US9376963B2 (en) * | 2013-01-16 | 2016-06-28 | Alstom Technology Ltd. | Detecting flashback by monitoring engine-dynamic spikes |
CN103114914B (zh) * | 2013-02-04 | 2015-10-28 | 哈尔滨东安发动机(集团)有限公司 | 微型燃气轮机的控制方法 |
CN103089454B (zh) * | 2013-02-04 | 2015-07-15 | 哈尔滨东安发动机(集团)有限公司 | 微型燃气轮机数字式控制装置 |
EP2762852A1 (en) | 2013-02-05 | 2014-08-06 | Siemens Aktiengesellschaft | Automatic Testing System for a Gas Turbine |
EP2789914A1 (de) | 2013-04-12 | 2014-10-15 | Siemens Aktiengesellschaft | Verfahren zur Überwachung eines Flammenzustands |
US9494493B2 (en) | 2013-04-12 | 2016-11-15 | Siemens Energy, Inc. | Single dynamic pressure sensor based flame monitoring of a gas turbine combustor |
US10024532B2 (en) | 2013-12-27 | 2018-07-17 | Mitsubishi Heavy Industries, Ltd. | Combustion control device, combustion system, combustion control method and program |
US9599527B2 (en) | 2015-04-21 | 2017-03-21 | Siemens Energy, Inc. | Dynamic pressure method of detecting flame on/off in gas turbine combustion cans for engine protection |
US11092083B2 (en) | 2017-02-10 | 2021-08-17 | General Electric Company | Pressure sensor assembly for a turbine engine |
CN107884196B (zh) * | 2017-12-15 | 2024-01-12 | 潍柴西港新能源动力有限公司 | 天然气发动机回火故障模拟控制系统及其控制方法 |
FR3080437B1 (fr) * | 2018-04-24 | 2020-04-17 | Safran Aircraft Engines | Systeme d'injection pour une chambre annulaire de combustion de turbomachine |
EP3810992B1 (en) * | 2018-07-24 | 2024-09-04 | Siemens Energy, Inc. | Acoustic flashback detection in a gas turbine combustion section |
GB201901320D0 (en) | 2019-01-31 | 2019-03-20 | Rolls Royce Plc | Gas turbine engine |
DE102019204422A1 (de) * | 2019-03-29 | 2020-10-01 | Siemens Aktiengesellschaft | Vorhersage einer Verbrennungsdynamik einer Gasturbine |
US12025306B1 (en) * | 2022-12-15 | 2024-07-02 | Ge Infrastructure Technology Llc | Methods and systems to detect flameholding in turbine assemblies |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5526266A (en) * | 1991-12-19 | 1996-06-11 | Caterpillar Inc. | Method for diagnosing an engine using a computer based boost pressure model |
JPH0874604A (ja) * | 1994-09-12 | 1996-03-19 | Hitachi Ltd | 液体燃料の燃焼方法及び燃焼装置 |
US5943866A (en) * | 1994-10-03 | 1999-08-31 | General Electric Company | Dynamically uncoupled low NOx combustor having multiple premixers with axial staging |
ATE203118T1 (de) * | 1994-12-19 | 2001-07-15 | Siemens Building Tech Ag | Verfahren und anordnung zum detektieren einer flamme |
JPH09170454A (ja) * | 1995-12-20 | 1997-06-30 | Toshiba Corp | ガスタービン燃焼監視装置 |
US5978525A (en) * | 1996-06-24 | 1999-11-02 | General Electric Company | Fiber optic sensors for gas turbine control |
US5961314A (en) * | 1997-05-06 | 1999-10-05 | Rosemount Aerospace Inc. | Apparatus for detecting flame conditions in combustion systems |
JP4056232B2 (ja) * | 2001-08-23 | 2008-03-05 | 三菱重工業株式会社 | ガスタービン制御装置、ガスタービンシステム及びガスタービン遠隔監視システム |
US6993916B2 (en) | 2004-06-08 | 2006-02-07 | General Electric Company | Burner tube and method for mixing air and gas in a gas turbine engine |
US7278266B2 (en) * | 2004-08-31 | 2007-10-09 | General Electric Company | Methods and apparatus for gas turbine engine lean blowout avoidance |
US7370466B2 (en) | 2004-11-09 | 2008-05-13 | Siemens Power Generation, Inc. | Extended flashback annulus in a gas turbine combustor |
US7810336B2 (en) | 2005-06-03 | 2010-10-12 | Siemens Energy, Inc. | System for introducing fuel to a fluid flow upstream of a combustion area |
US7513098B2 (en) * | 2005-06-29 | 2009-04-07 | Siemens Energy, Inc. | Swirler assembly and combinations of same in gas turbine engine combustors |
JP4175483B2 (ja) * | 2005-07-08 | 2008-11-05 | 三菱重工業株式会社 | 逆火検出装置、逆火検出方法、及びガスタービン |
US7441411B2 (en) * | 2005-09-16 | 2008-10-28 | General Electric Company | Method and apparatus to detect onset of combustor hardware damage |
US7836698B2 (en) | 2005-10-20 | 2010-11-23 | General Electric Company | Combustor with staged fuel premixer |
US7603222B2 (en) * | 2005-11-18 | 2009-10-13 | General Electric Company | Sensor diagnostics using embedded model quality parameters |
US20080267783A1 (en) | 2007-04-27 | 2008-10-30 | Gilbert Otto Kraemer | Methods and systems to facilitate operating within flame-holding margin |
US7891192B2 (en) * | 2007-08-28 | 2011-02-22 | General Electric Company | Gas turbine engine combustor assembly having integrated control valves |
US7853433B2 (en) * | 2008-09-24 | 2010-12-14 | Siemens Energy, Inc. | Combustion anomaly detection via wavelet analysis of dynamic sensor signals |
US20100180564A1 (en) * | 2009-01-21 | 2010-07-22 | General Electric Company | Systems and Methods for Mitigating a Flashback Condition in a Premixed Combustor |
US7942038B2 (en) * | 2009-01-21 | 2011-05-17 | General Electric Company | Systems and methods of monitoring acoustic pressure to detect a flame condition in a gas turbine |
US8260523B2 (en) * | 2009-05-04 | 2012-09-04 | General Electric Company | Method for detecting gas turbine engine flashback |
-
2009
- 2009-05-04 US US12/434,695 patent/US8260523B2/en active Active
-
2010
- 2010-03-02 JP JP2010044836A patent/JP5576676B2/ja active Active
- 2010-03-03 EP EP10155290.9A patent/EP2249005B1/en active Active
- 2010-03-04 CN CN201010143130.2A patent/CN101881221B/zh active Active
Also Published As
Publication number | Publication date |
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EP2249005A3 (en) | 2018-02-28 |
JP2010261434A (ja) | 2010-11-18 |
EP2249005B1 (en) | 2019-05-22 |
US20100280732A1 (en) | 2010-11-04 |
CN101881221A (zh) | 2010-11-10 |
CN101881221B (zh) | 2014-10-29 |
EP2249005A2 (en) | 2010-11-10 |
US8260523B2 (en) | 2012-09-04 |
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