JP2808495B2 - Starting method of gas turbine combustor - Google Patents
Starting method of gas turbine combustorInfo
- Publication number
- JP2808495B2 JP2808495B2 JP12939891A JP12939891A JP2808495B2 JP 2808495 B2 JP2808495 B2 JP 2808495B2 JP 12939891 A JP12939891 A JP 12939891A JP 12939891 A JP12939891 A JP 12939891A JP 2808495 B2 JP2808495 B2 JP 2808495B2
- Authority
- JP
- Japan
- Prior art keywords
- gas turbine
- fuel
- valve
- main fuel
- turbine combustor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Control Of Combustion (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はガスタービン、特に非常
電源用または予備保安電源用、あるいは保安用予備ポン
プや排煙ファンなどの駆動用のガスタービン燃焼器を起
動する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for starting a gas turbine, particularly a gas turbine combustor for an emergency power supply or a backup security power supply, or for driving a backup auxiliary pump or a smoke exhaust fan.
【０００２】[0002]
【従来の技術】ガスタービン発電装置の従来の起動時の
作動を図２および図３により説明する。図２はガスター
ビン燃焼器の構成を示し、図３はガスタービン起動時の
燃料弁の作動状況を示す。2. Description of the Related Art A conventional operation of a gas turbine power generator at startup will be described with reference to FIGS. FIG. 2 shows a configuration of the gas turbine combustor, and FIG. 3 shows an operation state of the fuel valve when the gas turbine is started.
【０００３】ガスタービンは、始動指令によって始動装
置（図示されていない）が作動し、昇速される。そして
回転速度Ｎ1 に達した時点ｔ1 でプライマリ燃料弁５ｂ
が開き、燃料がプライマリ燃料ライン４ｂから燃料ノズ
ル３を経由して燃焼器１内に噴霧され、点火装置２によ
り点火されて燃焼を始める。その後、回転速度Ｎ2 に達
した時点ｔ2 で、メインの燃料弁５ａが開き、動力を発
生するためのメイン燃料が、メイン燃料ライン４ａから
燃料ノズル３を経由して燃焼器１内に噴霧され、プライ
マリ燃料の燃焼火炎により点火されて燃焼し、ガスター
ビンを加速昇速する。[0003] A starting device (not shown) is operated by a start command to accelerate the gas turbine. At the time point t 1 when the rotation speed N 1 is reached, the primary fuel valve 5 b
Is opened, fuel is sprayed from the primary fuel line 4b into the combustor 1 via the fuel nozzle 3, and is ignited by the ignition device 2 to start combustion. Then, sprayed at time t 2 has been reached to the rotation speed N 2, opens the main fuel valve 5a, the main fuel for generating power, the combustor 1 via the fuel nozzle 3 from the main fuel line 4a Then, the fuel is ignited and burned by the combustion flame of the primary fuel to accelerate and accelerate the gas turbine.
【０００４】[0004]
【発明が解決しようとする課題】非常電源用や予備保安
電源用などの発電装置は、通常時は停止（待機）してお
り、必要時に確実に起動し発電する必要がある。A power generator for an emergency power supply or a backup security power supply is normally stopped (standby), and it is necessary to reliably start and generate power when necessary.
【０００５】長期間停止していると、メイン燃料弁５ａ
（図２）以降の下流側（４ａ，３）の燃料が燃焼器１内
に徐々に流出し、その燃料ラインに空気が充満する。そ
のような状態でガスタービンを起動しようとすると、プ
ライマリ燃料点火後、メイン燃料弁５ａが開いた時に失
火（空気流による吹消えまたは着火タインミングのズレ
による空燃比の変化）することがある。[0005] If the main fuel valve 5a is stopped for a long time,
The fuel on the downstream side (4a, 3) after ( FIG. 2 ) gradually flows out into the combustor 1, and the fuel line is filled with air. Attempting to start the gas turbine in such a state may cause misfire (blowout due to airflow or change in air-fuel ratio due to misalignment of ignition timing) when the main fuel valve 5a is opened after primary fuel ignition.
【０００６】[0006]
【課題を解決するための手段】本考案は、前記従来の課
題を解決するために、燃料ノズルにメイン燃料を供給す
る供給ラインに設けられた弁を一定時間開いて、上記燃
焼ノズルまでメイン燃料を満たした後、上記弁を閉じる
第１の工程と、プライマリ燃料を供給して点火する第２
の工程と、上記弁を開いてメイン燃料を供給し燃焼させ
る第３の工程とを有することを特徴とするガスタービン
燃焼器の起動方法を提案するものである。According to the present invention, in order to solve the above-mentioned conventional problems, a valve provided in a supply line for supplying a main fuel to a fuel nozzle is opened for a predetermined time, and the main fuel is supplied to the combustion nozzle. A first step of closing the valve and a second step of supplying primary fuel and igniting
And a third step in which the valve is opened to supply and burn the main fuel, and a method for starting the gas turbine combustor is proposed.
【０００７】[0007]
【作用】本発明方法では、プライマリ燃料の点火前にメ
イン燃料弁を一定時間開いて、その下流の空気を追出し
ておくので、プライマリ燃料の点火後メイン燃料の供給
を開始する時に、プライマリ燃料の炎が吹き消されるこ
とがない。According to the method of the present invention, the main fuel valve is opened for a certain period of time before the primary fuel is ignited and the air downstream of the main fuel valve is expelled. The flame is not blown out.
【０００８】[0008]
【実施例】本発明の一実施例を図１により説明する。始
動指令によって、メイン燃料弁５ａをＸ時間だけ開き、
同メイン燃料弁５ａよりも下流側の空気を追出して燃料
で充満させる。その後、ガスタービンが回転速度Ｎ1 へ
と昇速されるが、それ以降の各部作動は従来と同じであ
る。こうして始動時の起動失敗（失火）を防止できる。FIG. 1 shows an embodiment of the present invention. By the start command, the main fuel valve 5a is opened for X time,
The air downstream of the main fuel valve 5a is expelled and filled with fuel. Thereafter, the gas turbine is speed increasing to the rotation speed N 1, each unit operation of the later is the same as the conventional one. In this way, start failure (misfire) at the start can be prevented.
【０００９】[0009]
【発明の効果】本発明の方法によれば、ガスタービン始
動時に起動の失敗（失火）を防止できる。According to the method of the present invention, failure of starting (misfire) can be prevented when starting the gas turbine.
【図１】図１は本発明方法の一実施例におけるガスター
ビン燃焼器起動時の燃料弁の作動を示す説明図である。FIG. 1 is an explanatory diagram showing the operation of a fuel valve when starting a gas turbine combustor in one embodiment of the method of the present invention.
【図２】図２はガスタービン燃焼器の一例を示す構成図
である。FIG. 2 is a configuration diagram illustrating an example of a gas turbine combustor.
【図３】図３は従来のガスタービン燃焼器起動方法にお
ける燃料弁の作動を示す説明図である。FIG. 3 is an explanatory diagram showing an operation of a fuel valve in a conventional gas turbine combustor starting method.
１ 燃焼器 ２ 点火装置 ３ 燃料ノズル ４ａ メイン燃料ライン ４ｂ プライマリ燃料ライン ５ａ メイン燃料弁 ５ｂ プライマリ燃料弁 DESCRIPTION OF SYMBOLS 1 Combustor 2 Ignition device 3 Fuel nozzle 4a Main fuel line 4b Primary fuel line 5a Main fuel valve 5b Primary fuel valve
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−142335（ＪＰ，Ａ) 特開 昭52−36209（ＪＰ，Ａ) 特開 昭50−65709（ＪＰ，Ａ) 特開 昭58−37424（ＪＰ，Ａ) 特開 昭48−78530（ＪＰ，Ａ) 特開 昭47−10151（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) F02C 7/232 F02C 7/26 F02C 9/26 F23N 1/00 F23N 5/20 F23R 3/00──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-142335 (JP, A) JP-A-52-36209 (JP, A) JP-A 50-65709 (JP, A) JP-A 58-36 37424 (JP, A) JP-A-48-78530 (JP, A) JP-A-47-10151 (JP, A) (58) Fields investigated (Int. Cl. 6 , DB name) F02C 7/232 F02C 7 / 26 F02C 9/26 F23N 1/00 F23N 5/20 F23R 3/00
Claims (1)
ラインに設けられた弁を一定時間開いて、上記燃焼ノズ
ルまでメイン燃料を満たした後、上記弁を閉じる第１の
工程と、プライマリ燃料を供給して点火する第２の工程
と、上記弁を開いてメイン燃料を供給し燃焼させる第３
の工程とを有することを特徴とするガスタービン燃焼器
の起動方法。A first step of opening a valve provided on a supply line for supplying a main fuel to a fuel nozzle for a predetermined time, filling the main fuel up to the combustion nozzle, and then closing the valve; A second step of supplying and igniting, and a third step of opening the valve to supply and burn the main fuel.
A method for starting a gas turbine combustor, comprising the steps of:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12939891A JP2808495B2 (en) | 1991-05-31 | 1991-05-31 | Starting method of gas turbine combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12939891A JP2808495B2 (en) | 1991-05-31 | 1991-05-31 | Starting method of gas turbine combustor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04353229A JPH04353229A (en) | 1992-12-08 |
| JP2808495B2 true JP2808495B2 (en) | 1998-10-08 |
Family
ID=15008583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12939891A Expired - Fee Related JP2808495B2 (en) | 1991-05-31 | 1991-05-31 | Starting method of gas turbine combustor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2808495B2 (en) |
-
1991
- 1991-05-31 JP JP12939891A patent/JP2808495B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04353229A (en) | 1992-12-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980616 |
|
| LAPS | Cancellation because of no payment of annual fees |