JP2856860B2 - Gas turbine equipment - Google Patents
Gas turbine equipmentInfo
- Publication number
- JP2856860B2 JP2856860B2 JP2203104A JP20310490A JP2856860B2 JP 2856860 B2 JP2856860 B2 JP 2856860B2 JP 2203104 A JP2203104 A JP 2203104A JP 20310490 A JP20310490 A JP 20310490A JP 2856860 B2 JP2856860 B2 JP 2856860B2
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- JP
- Japan
- Prior art keywords
- gas
- fuel
- control valve
- pressure
- inert gas
- 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.)
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- Feeding And Controlling Fuel (AREA)
Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明は、液体とガスの二重燃料系統を有するガスタ
ービン設備において、液体燃料からガス燃料への燃料切
替え前に行うガス燃料配管の不活性ガスパージに関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention is performed in a gas turbine facility having a dual fuel system of liquid and gas before switching fuel from liquid fuel to gas fuel. The present invention relates to inert gas purging of gas fuel piping.
（従来の技術） 最近では、省エネルギー及びエネルギー多様化への対
応のため、高炉排ガスや石炭ガス等の低カロリー燃料
（発熱量が3000Kcal/Kg以下）を用いるガスタービンが
広く使用されている。(Prior Art) In recent years, gas turbines using low calorie fuels (calorific value of 3000 Kcal / Kg or less) such as blast furnace exhaust gas and coal gas have been widely used for energy saving and energy diversification.
このような低カロリーのガス燃料は、一般に、起動時
の着火性及び低負荷時の燃焼安定性が悪いため、ガスタ
ービン設備の燃料系統に、液体燃料とガス燃料の二重燃
料系統を設け、起動時や低負荷時には、液体燃料を使用
するようにしている。Such low-calorie gas fuel generally has poor ignitability at start-up and combustion stability at low load, so a dual fuel system of liquid fuel and gas fuel is provided in the fuel system of the gas turbine equipment. At the time of startup and low load, liquid fuel is used.
もちろん、LNGのような高カロリーのガス燃料を使う
場合でも、運転中の使用燃料の切替えの融通性を持たせ
る場合には、二重系統を構成することがあるが、石炭ガ
スのように、発熱量の低い燃料ガスを使用するガスター
ビンの場合には、安全上の観点から二重燃料系統とし、
起動時は、液体燃料でガスタービンを立ち上げ、所定の
負荷到達後に、低カロリーのガス燃料に切替える方法を
とっている。また、ガスタービンの停止時においても、
所定の負荷到達後に液体燃料に切替え、液体燃料で停止
することが一般的な運用となっている。Of course, even when using a high calorie gas fuel such as LNG, a dual system may be configured to provide flexibility in switching the fuel used during operation, but like coal gas, In the case of gas turbines that use fuel gas with a low calorific value, use a dual fuel system from the viewpoint of safety.
At the time of startup, a method is adopted in which the gas turbine is started up using liquid fuel, and after reaching a predetermined load, the gas turbine is switched to low calorie gas fuel. Also, when the gas turbine is stopped,
It is common practice to switch to liquid fuel after reaching a predetermined load and stop with liquid fuel.
第２図は、液体とガスの二重燃料系統を備えた従来の
ガスタービン設備の一例を示す。FIG. 2 shows an example of a conventional gas turbine facility provided with a dual liquid and gas fuel system.
同図において、ガスタービンの起動時及び燃料ガスへ
の切替え負荷までの運転は、液体燃料で行われる。この
場合、液体燃料は液体燃料タンク１から送出され、燃料
移送ポンプ２及びギアポンプ３で昇圧されて燃焼器５へ
供給される。この時の液体燃料の流量調節は、液体燃料
制御弁４により行われる。In the figure, the operation at the time of starting the gas turbine and up to the switching load to the fuel gas is performed with the liquid fuel. In this case, the liquid fuel is sent out from the liquid fuel tank 1, and is pressurized by the fuel transfer pump 2 and the gear pump 3 and supplied to the combustor 5. At this time, the flow rate of the liquid fuel is adjusted by the liquid fuel control valve 4.
燃焼器５に入った液体燃料は、噴霧空気（図示せず）
により霧状の燃料となり、圧縮機６からの空気と混合し
て燃焼し、高温の燃焼ガスとなってタービン７を駆動す
る。The liquid fuel that has entered the combustor 5 is sprayed air (not shown).
As a result, the fuel becomes mist-like fuel, mixes with air from the compressor 6 and burns, and turns into high-temperature combustion gas to drive the turbine 7.
一方、ガス燃料系統には、燃料ガス発生部８から燃焼
器５に至るラインに、燃料ガス仕切弁９、ガス燃料圧力
制御弁10及びガス燃料制御弁11が順に設けられている。
また、圧縮機６の抽気は昇圧コンプレッサ12及び空気パ
ージ入口弁13を介してガス燃料制御弁11の下流側に供給
される。14は不活性ガス止弁を示す。On the other hand, in the gas fuel system, a fuel gas gate valve 9, a gas fuel pressure control valve 10, and a gas fuel control valve 11 are sequentially provided in a line from the fuel gas generator 8 to the combustor 5.
Further, the bleed air of the compressor 6 is supplied to the downstream side of the gas fuel control valve 11 via the booster compressor 12 and the air purge inlet valve 13. Reference numeral 14 denotes an inert gas stop valve.
液体燃料の燃焼時には、燃料ガス仕切弁９は閉じら
れ、燃焼器５と燃料ガス発生部８との間は仕切られてい
る。この場合、空気パージ入口弁13は開とされ、圧縮機
６からの抽気が、昇圧コンプレッサ12で昇圧された後、
ガス燃料制御弁11の下流へパージ空気として供給されて
いる。During the combustion of the liquid fuel, the fuel gas gate valve 9 is closed, and the combustor 5 and the fuel gas generator 8 are partitioned. In this case, after the air purge inlet valve 13 is opened and the bleed air from the compressor 6 is boosted by the boost compressor 12,
It is supplied to the downstream of the gas fuel control valve 11 as purge air.
このように、液体燃料の使用時に、ガス燃料制御弁11
の下流を空気でパージする目的は、燃焼器５の直前の燃
料ガス配管を通じて、各燃焼室間で高温の燃焼ガスがク
ロスフローすることを防止すると共に、液体燃料で運転
中のガス燃料ノズルを清浄に保つためである。As described above, when the liquid fuel is used, the gas fuel control valve 11 is used.
The purpose of purging the downstream of the air with the air is to prevent the high-temperature combustion gas from cross-flowing between the combustion chambers through the fuel gas pipe immediately before the combustor 5 and to prevent the gas fuel nozzle operating with the liquid fuel from flowing. This is to keep it clean.
ガスタービンが所定の負荷に到達すると、液体燃料か
らガス燃料に切替えるが、この時、ガス燃料をそのまま
燃焼器５へ導入するのは、ガス燃料制御弁11の下流に燃
料ガスと空気の混合雰囲気をつくることになり、爆発の
危険があるので好ましくない。When the gas turbine reaches a predetermined load, the fuel is switched from liquid fuel to gas fuel. At this time, the gas fuel is directly introduced into the combustor 5 because the mixed atmosphere of fuel gas and air is provided downstream of the gas fuel control valve 11. It is not preferable because of the danger of explosion.
そこで、液体燃料からガス燃料へ切替える直前には、
それまで空気パージを行っていたガス燃料制御弁11の下
流側を、不活性ガスでパージするようにしている。Therefore, just before switching from liquid fuel to gas fuel,
The downstream side of the gas fuel control valve 11, which has been performing the air purge, is purged with the inert gas.
不活性ガスパージは、空気パージ入口弁13を閉じた
後、不活性ガス止弁14を開とし、ある一定時間、不活性
ガスをガス燃料制御弁11の下流に導入することによって
行われる。The inert gas purge is performed by closing the air purge inlet valve 13, opening the inert gas stop valve 14, and introducing the inert gas downstream of the gas fuel control valve 11 for a certain period of time.
一方、不活性ガスパージの少し前から、来たるべき燃
料切替えに備えて、燃料ガス仕切弁９が開とされ、燃料
ガスをガス燃料圧力制御弁10の直前まで流し、配管のウ
オーミングが行われる。ここで、ガス燃料圧力制御弁10
は、ガス燃料制御弁11の前圧を制御するものであるが、
ガスタービン側としてのガス燃料の遮断機能も合わせ有
している。On the other hand, shortly before the inert gas purge, the fuel gas gate valve 9 is opened and the fuel gas flows until just before the gas fuel pressure control valve 10 in preparation for the coming fuel switching, and the piping is warmed. Here, the gas fuel pressure control valve 10
Is for controlling the pre-pressure of the gas fuel control valve 11,
It also has a gas fuel shutoff function on the gas turbine side.
ガス燃料制御弁11下流の不活性ガスパージが所定時間
で終了した後、ガス燃料圧力制御弁10とガス燃料制御弁
11は開とされ、燃料ガスは燃焼器５に導入され、燃料切
替えが行われる。この燃料切替えは、例えば、特開昭62
−243934号公報に示す様な方法で行われる。After the inert gas purge downstream of the gas fuel control valve 11 is completed in a predetermined time, the gas fuel pressure control valve 10 and the gas fuel control valve
11 is opened, fuel gas is introduced into the combustor 5, and fuel switching is performed. This fuel switching is described in, for example,
This is performed by a method as described in JP-A-243934.
以上の液体燃料使用中の燃料切替え手順をまとめる
と、下記の様になる。The fuel switching procedure during the use of the liquid fuel described above is summarized as follows.
（イ）ガス燃料ラインのガス燃料制御弁11下流の空気パ
ージ。(B) Air purge downstream of the gas fuel control valve 11 in the gas fuel line.
（ロ）ガス燃料仕切弁９を開き、ガス燃料ラインのウオ
ーミング。(B) Open the gas fuel isolation valve 9 and warm the gas fuel line.
（ハ）ガス燃料制御弁11下流の不活性ガスパージ。(C) Inert gas purging downstream of the gas fuel control valve 11.
（ニ）不活性ガスパージ終了後、ガス燃料制御弁11を開
き、液体燃料からガス燃料への燃料切替え。(D) After the inert gas purge is completed, the gas fuel control valve 11 is opened, and the fuel is switched from liquid fuel to gas fuel.
（発明が解決しようとする課題） 上述した従来技術による燃料切替えにおいては、ガス
燃料切替え前に、ガス燃料仕切弁９を開いてガス燃料圧
力制御弁10の前までをウォーミングしている際に、燃料
ガスがガス燃料圧力制御弁10とガス燃料制御弁11をリー
クし、空気パージ中のガス燃料制御弁11の下流へ流れ込
んだ場合、この部分にガス燃料と空気の混合雰囲気が形
成され、酸素リッチの状態となるため、僅かな発火媒体
でも爆発するという危険性がある。(Problems to be Solved by the Invention) In the above-described fuel switching according to the related art, before the gas fuel switching, the gas fuel isolation valve 9 is opened and the gas fuel pressure control valve 10 is warmed up to the front. When the fuel gas leaks from the gas fuel pressure control valve 10 and the gas fuel control valve 11 and flows downstream of the gas fuel control valve 11 during air purging, a mixed atmosphere of gas fuel and air is formed in this portion, Because of the oxygen-rich state, there is a risk of explosion even with a small amount of ignition medium.
本発明は、このような課題を解決するために創案され
たもので、液体からガス燃料への切替え前に行われる燃
料ガスラインのウォーミング中に、ガス燃料制御弁下流
への燃料ガスのリークを防止し、空気パージから不活性
ガスパージまでの間、ガス燃料がガス燃料制御弁の下流
で混合することを防止して爆発の危険性を回避したガス
タービン設備を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem, and the fuel gas leaks downstream of the gas fuel control valve during warming of the fuel gas line performed before switching from liquid to gas fuel. It is an object of the present invention to provide a gas turbine facility that prevents gas fuel from mixing downstream of a gas fuel control valve during an air purge to an inert gas purge, thereby avoiding the risk of explosion.
［発明の構成］ （課題を解決するための手段） 本発明のガスタービン設備は、液体燃料とガス燃料を
燃焼可能であり、かつ運転中に相互の燃料切替えが可能
な二重燃料系統、および液体燃料の燃焼時にガス燃料制
御弁の下流へパージ用空気を供給するパージ用空気供給
系を有するガスタービン設備の燃料系統において、前記
ガス燃料制御弁の上流に、不活性ガスの供給系統を設
け、液体燃料をガスタービンで燃焼中に、前記ガス燃料
制御弁の上流側に、その下流へのパージ用空気の圧力よ
りも高い圧力の不活性ガスを供給するよう構成したこと
を特徴とするものである。[Configuration of the Invention] (Means for Solving the Problems) A gas turbine facility of the present invention is capable of burning liquid fuel and gas fuel, and capable of switching between fuels during operation, and a dual fuel system. In a fuel system of a gas turbine facility having a purge air supply system for supplying purge air downstream of a gas fuel control valve during combustion of liquid fuel, an inert gas supply system is provided upstream of the gas fuel control valve. An inert gas having a pressure higher than a pressure of purging air is supplied to an upstream side of the gas fuel control valve downstream of the liquid fuel during combustion of the liquid fuel by the gas turbine. It is.
（作用） 上述のように、本発明のガスタービン設備では、ガス
燃料圧力制御弁と、ガス燃料制御弁の間に、高圧の不活
性ガスを供給する（この供給圧力は、ガス燃料制御弁の
下流へのパージ空気圧力及び不活性ガスパージ圧力より
十分高く、かつ燃料ガスの圧力よりも高いものとする）
ことにより、ガス燃料圧力制御弁の前側の燃料ガスとガ
ス燃料制御弁の下流の空気パージ中の空気との遮断が行
われる。(Operation) As described above, in the gas turbine equipment of the present invention, a high-pressure inert gas is supplied between the gas fuel pressure control valve and the gas fuel control valve. (It shall be sufficiently higher than the downstream purge air pressure and the inert gas purge pressure, and higher than the fuel gas pressure.)
This shuts off the fuel gas in front of the gas fuel pressure control valve and the air during the air purge downstream of the gas fuel control valve.
この高圧の不活性ガスパージを、ガス燃料への切替え
開始前のガス燃料圧力制御弁までの配管ウオーミング時
に実行し、ガス燃料圧力制御弁とガス燃料制御弁の間
に、高圧の不活性ガス雰囲気を作り、燃料ガスのリーク
によるガス燃料制御弁の下流でのガス燃料と空気の混合
雰囲気の形成を防止する。This high-pressure inert gas purge is performed at the time of piping warming to the gas fuel pressure control valve before switching to gas fuel is started, and a high-pressure inert gas atmosphere is provided between the gas fuel pressure control valve and the gas fuel control valve. This prevents the formation of a mixed atmosphere of gas fuel and air downstream of the gas fuel control valve due to fuel gas leakage.
（実施例） 次に、図面を参照しながら本発明の実施例を説明す
る。なお、第２図における同一部分には同一符号を付
し、同一部分の説明は、必要な場合を除き、省略する。Example Next, an example of the present invention will be described with reference to the drawings. The same reference numerals are given to the same parts in FIG. 2, and description of the same parts will be omitted unless necessary.
第１図において、ガス燃料制御弁11の上流には高圧の
不活性ガス供給ライン20が接続され、ガス燃料制御弁11
と、ガス燃料圧力制御弁10の間に、不活性ガス仕切弁21
を介して高圧の不活性ガスが供給される。In FIG. 1, a high-pressure inert gas supply line 20 is connected upstream of the gas fuel control valve 11,
And an inert gas gate valve 21 between the gas fuel pressure control valve 10 and
A high-pressure inert gas is supplied via the.
また、ガス燃料制御弁11の下流には、高圧不活性ガス
供給ライン20からの不活性ガスが、減圧弁22で減圧され
て供給される。Further, downstream of the gas fuel control valve 11, an inert gas from a high-pressure inert gas supply line 20 is supplied under reduced pressure by a pressure reducing valve 22.
このような構成の本発明の設備において、燃料系統を
液体燃料からガス燃料に切替える際には、先ず、不活性
ガス仕切弁21を開とし、ガス燃料制御弁11の上流に高圧
の不活性ガスを供給しておき、ガスタービンへのガス燃
料配管のウオーミングのため、ガス燃料仕切弁９を微開
して、ガス燃料圧力制御弁10の上流まで、ガス燃料を少
量流してウォーミングを行う。この時は、ガス燃料制御
弁11の下流は、まだ空気パージ中である。When switching the fuel system from liquid fuel to gas fuel in the equipment of the present invention having such a configuration, first, the inert gas separation valve 21 is opened, and a high-pressure inert gas is provided upstream of the gas fuel control valve 11. In order to warm the gas fuel pipe to the gas turbine, the gas fuel isolation valve 9 is slightly opened, and a small amount of gas fuel flows to the upstream of the gas fuel pressure control valve 10 to perform warming. At this time, the air downstream of the gas fuel control valve 11 is still being purged.
一定時間を経過し、ガス燃料圧力制御弁10の上流のウ
ォーミングが完了すると、ガス燃料制御弁11の下流の不
活性ガスパージが行なわれる。When a predetermined time has elapsed and the warming upstream of the gas fuel pressure control valve 10 is completed, an inert gas purge downstream of the gas fuel control valve 11 is performed.
この不活性ガスパージは、先ず、空気昇圧コンプレッ
サー12の出口側に設けた空気パージ入口弁９を閉じ、不
活性ガス止弁14を開とし、減圧弁22で減圧された低圧の
不活性ガスをガス燃料制御弁11の下流に導入することに
よって行われる。This inert gas purge is performed by first closing the air purge inlet valve 9 provided on the outlet side of the air pressure compressor 12, opening the inert gas stop valve 14, and discharging the low-pressure inert gas reduced by the pressure reducing valve 22. This is carried out by introducing the fuel control valve 11 downstream.
不活性ガスパージを一定時間実施した後、低圧の不活
性ガス止弁14を閉じ、同時に高圧の不活性ガス仕切弁21
も閉じて不活性ガスパージを終了させ、燃料ガス仕切弁
９を開き、ガス燃料圧力制御弁10とガス燃料制御弁11の
開度を制御しながら、燃料ガスを燃焼器５に導入し、液
体燃料からガス燃料への燃料切替えを行う。After performing the inert gas purge for a certain period of time, the low-pressure inert gas stop valve 14 is closed, and at the same time, the high-pressure inert gas gate valve 21 is closed.
To close the inert gas purge, open the fuel gas gate valve 9, and control the opening of the gas fuel pressure control valve 10 and the gas fuel control valve 11, while introducing the fuel gas into the combustor 5, and The fuel is switched from gas to gas fuel.
このように、本発明のガスタービン設備では、液体燃
料からガス燃料への燃料切替え時に、燃料ガスと空気と
の接触を避けるため、ガス燃料制御弁11の上流側に高圧
の不活性ガスを導入し、高圧の不活性ガス雰囲気をガス
燃料圧力制御弁10の二次側に作っておくことにより、た
とえガス燃料圧力制御弁10の全閉時にリークがあって
も、その背圧によって燃料ガスの侵入を押えることがで
き、従ってガス燃料制御弁11の下流側の空気とガス燃料
の接触を防止できる。As described above, in the gas turbine equipment of the present invention, when switching fuel from liquid fuel to gas fuel, high-pressure inert gas is introduced upstream of the gas fuel control valve 11 in order to avoid contact between fuel gas and air. However, by creating a high-pressure inert gas atmosphere on the secondary side of the gas fuel pressure control valve 10, even if there is a leak when the gas fuel pressure control valve 10 is fully closed, the back pressure of the fuel gas causes Intrusion can be suppressed, and therefore, contact between air and gas fuel downstream of the gas fuel control valve 11 can be prevented.
なお、以上の説明では、液体燃料からガス燃料への燃
料切替え前に、高圧の不活性ガスを供給する実施例につ
き述べたが、本発明においては、液体燃料でガスタービ
ンを運転中に、燃料ガス発生部が運転しており、ガスタ
ービンへの燃料ガス配管内のガス圧力がある程度高い場
合、即ちガスタービンの燃焼器圧力（20Kg/cm2程度）以
上のガス燃料供給圧力が存在する場合は、燃料ガスがガ
ス燃料制御弁11の下流へリークする危険性があるので、
そのような場合には、ガス燃料制御弁11の上流側に、常
に高圧の不活性ガスを供給するようにしてもよい。In the above description, the embodiment in which the high-pressure inert gas is supplied before the fuel is switched from the liquid fuel to the gas fuel has been described. When the gas generating section is operating and the gas pressure in the fuel gas pipe to the gas turbine is high to some extent, that is, when the gas fuel supply pressure is higher than the gas turbine combustor pressure (about 20 kg / cm 2 ) Since there is a risk that fuel gas leaks downstream of the gas fuel control valve 11,
In such a case, a high-pressure inert gas may always be supplied to the upstream side of the gas fuel control valve 11.
例えば、液体燃料の使用中にガス圧力検出器23が所定
の圧力以上を示す場合には、不活性ガス仕切弁21を常時
開とすることにより、ガス燃料制御弁11の上流へのガス
燃料の侵入を防止することができる。この場合の不活性
ガス仕切弁21の制御ロジック例を第３図に示す。For example, when the gas pressure detector 23 indicates a predetermined pressure or more during the use of the liquid fuel, the inert gas gate valve 21 is kept open to allow the gas fuel to flow upstream of the gas fuel control valve 11. Intrusion can be prevented. FIG. 3 shows an example of the control logic of the inert gas gate valve 21 in this case.
［発明の効果］ 上述のように、本発明によれば、ガスタービン設備を
液体燃料で運転している場合、燃料ガスのリークにより
生ずる燃料ガスと空気の混合雰囲気の形成を抑えること
により、混合による爆発の危険を回避でき、液体燃料か
らガス燃料への燃料切替えを安全に実現することができ
る。[Effects of the Invention] As described above, according to the present invention, when the gas turbine equipment is operated with the liquid fuel, the formation of the mixed atmosphere of the fuel gas and the air caused by the leak of the fuel gas is suppressed, whereby the mixing is performed. The risk of explosion due to the fuel can be avoided, and the fuel switching from liquid fuel to gas fuel can be realized safely.
第１図は本発明のガスタービン設備の実施例を示す系統
図、第２図は従来のガスタービン設備を例示する系統
図、第３図は本発明の変形例における不活性ガス仕切弁
の制御ロジック図である。 １……液体燃料タンク ２……燃料移送ポンプ ３……ギアポンプ ４……液体燃料制御弁 ５……燃焼器 ６……圧縮機 ７……タービン ８……燃料ガス発生部 ９……燃料ガス仕切弁 10……ガス燃料圧力制御弁 11……ガス燃料制御弁 12……昇圧コンプレッサ 13……空気パージ入口弁 14……不活性ガス止弁 20……高圧不活性ガス供給ライン 21……不活性ガス仕切弁 22……減圧弁 23……ガス圧力検出器1 is a system diagram showing an embodiment of the gas turbine equipment of the present invention, FIG. 2 is a system diagram illustrating a conventional gas turbine equipment, and FIG. 3 is a control of an inert gas gate valve in a modification of the present invention. It is a logic diagram. DESCRIPTION OF SYMBOLS 1 ... Liquid fuel tank 2 ... Fuel transfer pump 3 ... Gear pump 4 ... Liquid fuel control valve 5 ... Combustor 6 ... Compressor 7 ... Turbine 8 ... Fuel gas generation part 9 ... Fuel gas partition Valve 10: gas fuel pressure control valve 11: gas fuel control valve 12: boost compressor 13: air purge inlet valve 14: inert gas stop valve 20: high-pressure inert gas supply line 21: inert Gas gate valve 22 Pressure reducing valve 23 Gas pressure detector
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F02C 7/22 F02C 7/232 F02C 9/40──────────────────────────────────────────────────の Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) F02C 7/22 F02C 7/232 F02C 9/40
Claims (1)
つ運転中に相互の燃料切替えが可能な二重燃料系統、お
よび液体燃料の燃焼時にガス燃料制御弁の下流へパージ
用空気を供給するパージ用空気供給系を有するガスター
ビン設備の燃料系統において、前記ガス燃料制御弁の上
流に、不活性ガスの供給系統を設け、液体燃料をガスタ
ービンで燃焼中に、前記ガス燃料制御弁の上流側に、そ
の下流へのパージ用空気の圧力よりも高い圧力の不活性
ガスを供給するよう構成したことを特徴とするガスター
ビン設備。1. A dual fuel system capable of burning liquid fuel and gas fuel and capable of switching between fuels during operation, and supplying purge air downstream of a gas fuel control valve during combustion of liquid fuel. In a fuel system of a gas turbine facility having a purge air supply system, an inert gas supply system is provided upstream of the gas fuel control valve. Gas turbine equipment characterized in that an upstream side is supplied with an inert gas having a pressure higher than a pressure of purging air downstream thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2203104A JP2856860B2 (en) | 1990-07-31 | 1990-07-31 | Gas turbine equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2203104A JP2856860B2 (en) | 1990-07-31 | 1990-07-31 | Gas turbine equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0486335A JPH0486335A (en) | 1992-03-18 |
| JP2856860B2 true JP2856860B2 (en) | 1999-02-10 |
Family
ID=16468459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2203104A Expired - Fee Related JP2856860B2 (en) | 1990-07-31 | 1990-07-31 | Gas turbine equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2856860B2 (en) |
Cited By (2)
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|---|---|---|---|---|
| KR20150002490A (en) * | 2013-06-28 | 2015-01-07 | 캐터필라 모토렌 게엠베하 운트 코. 카게 | Ending operation of dual fuel engine in gaseous fuel mode |
| CN104727946A (en) * | 2015-01-04 | 2015-06-24 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Fuel switching device for multi-fuel combustion chamber of gas turbine and control device of fuel switching device |
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|---|---|---|---|---|
| JPH1162622A (en) * | 1997-08-22 | 1999-03-05 | Toshiba Corp | Integrated coal gasification combined cycle power plant and operation method |
| JPH11210494A (en) * | 1998-01-26 | 1999-08-03 | Toshiba Corp | Purge device for fuel supply device of gas turbine and method for operating purge device |
| JP2001055932A (en) * | 1999-08-16 | 2001-02-27 | Toshiba Corp | Gas engine system and operation method therefor |
| JP4115659B2 (en) * | 2000-10-30 | 2008-07-09 | 株式会社東芝 | Gas turbine fuel supply system |
| JP4130909B2 (en) * | 2003-09-26 | 2008-08-13 | 株式会社日立製作所 | Double fuel-fired gas turbine fuel supply system |
| JP4979615B2 (en) | 2008-03-05 | 2012-07-18 | 株式会社日立製作所 | Combustor and fuel supply method for combustor |
| US9650955B2 (en) * | 2011-11-10 | 2017-05-16 | General Electric Company | System for purging gas fuel circuit for a gas turbine engine |
| US9261023B2 (en) * | 2012-01-04 | 2016-02-16 | General Electric Company | Systems and methods for monitoring fluid separation and/or monitoring the health of a valve |
| JP6155014B2 (en) * | 2012-11-22 | 2017-06-28 | 三菱日立パワーシステムズ株式会社 | Fluid supply control system for gas turbine combustor and fluid supply control method for gas turbine combustor |
| CN104863717B (en) * | 2015-01-28 | 2018-05-04 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Control method and system for gas turbine fuel switching |
| JP6779097B2 (en) * | 2016-10-24 | 2020-11-04 | 三菱パワー株式会社 | Gas turbine combustor and its operation method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59172241U (en) * | 1983-05-06 | 1984-11-17 | 株式会社日立製作所 | Fuel purge device |
| JPS63280826A (en) * | 1987-05-14 | 1988-11-17 | Mitsubishi Heavy Ind Ltd | Gas turbine fuel supply system |
| JPH01294916A (en) * | 1988-05-23 | 1989-11-28 | Toshiba Corp | Gas turbine fuel feed device |
-
1990
- 1990-07-31 JP JP2203104A patent/JP2856860B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150002490A (en) * | 2013-06-28 | 2015-01-07 | 캐터필라 모토렌 게엠베하 운트 코. 카게 | Ending operation of dual fuel engine in gaseous fuel mode |
| KR102206923B1 (en) * | 2013-06-28 | 2021-01-25 | 캐터필라 모토렌 게엠베하 운트 코. 카게 | Ending operation of dual fuel engine in gaseous fuel mode |
| CN104727946A (en) * | 2015-01-04 | 2015-06-24 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Fuel switching device for multi-fuel combustion chamber of gas turbine and control device of fuel switching device |
| CN104727946B (en) * | 2015-01-04 | 2018-10-16 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Gas turbine multi fuel chamber fuel switching device and its control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0486335A (en) | 1992-03-18 |
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