JPH0486335A - Gas turbine equipment - Google Patents
Gas turbine equipmentInfo
- Publication number
- JPH0486335A JPH0486335A JP20310490A JP20310490A JPH0486335A JP H0486335 A JPH0486335 A JP H0486335A JP 20310490 A JP20310490 A JP 20310490A JP 20310490 A JP20310490 A JP 20310490A JP H0486335 A JPH0486335 A JP H0486335A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- fuel
- control valve
- pressure
- valve
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims abstract description 162
- 239000007789 gas Substances 0.000 claims abstract description 142
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 12
- 239000011261 inert gas Substances 0.000 claims description 45
- 238000010926 purge Methods 0.000 claims description 29
- 230000009977 dual effect Effects 0.000 claims description 8
- 239000002737 fuel gas Substances 0.000 abstract description 28
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 238000004880 explosion Methods 0.000 abstract description 5
- 239000000567 combustion gas Substances 0.000 abstract description 3
- 238000005192 partition Methods 0.000 abstract 2
- 239000006260 foam Substances 0.000 abstract 1
- 238000010792 warming Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000003034 coal gas Substances 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Landscapes
- Feeding And Controlling Fuel (AREA)
Abstract
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 directed to a gas turbine equipment having a dual fuel system of liquid and gas, which is performed before switching from liquid fuel to gas fuel. This 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) Recently, in order to save energy and respond to energy diversification, gas turbines that use low-calorie fuels (having a calorific value of 3000 Kcal/Kg or less) such as blast furnace exhaust gas or coal gas have been widely used.
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 fuels generally have poor ignitability at startup and poor combustion stability at low loads, so a dual fuel system for liquid fuel and gas fuel is installed in the fuel system of gas turbine equipment. Liquid fuel is used when starting up or under low load.
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
１−することが−船釣な運用となっている。Of course, even when using 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, For gas turbines that use fuel gas with a low calorific value, a dual fuel system is used for safety reasons.
At startup, the gas turbine is started up using liquid fuel, and after reaching a predetermined load, it is switched to low-calorie gas fuel. Also, even when the gas turbine is stopped,
After reaching a predetermined load, the fuel is switched to liquid fuel and stopped using 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 installation 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 gas turbine is operated using liquid fuel at startup and until the load is switched to fuel gas. In this case, liquid fuel is delivered from the liquid fuel tank 1, pressurized by the fuel transfer pump 2 and gear pump 3, and supplied to the combustor 5. The liquid fuel flow rate adjustment at this time is performed 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 becomes atomized fuel by atomizing air (not shown), mixes with air from the compressor 6 and burns, and becomes high-temperature combustion gas that drives 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ツサ１２及び空
気パージ人口弁］３を介してガス燃料制御弁１１の下流
側に供給される。］４は不活性ガス１１−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 generating section 8 to the combustor 5. Further, the bleed air from the compressor 6 is supplied to the downstream side of the gas fuel control valve 11 via the boost compressor 12 and the air purge artificial valve]3. ] 4 indicates an inert gas 11-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。During combustion of liquid fuel, the fuel gas gate valve 9 is closed,
The combustor 5 and the fuel gas generating section 8 are partitioned off.
この場合、空気パージ人口弁１３は開とされ、圧縮機６
からの抽気が、昇圧コンプレッサ］２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。In this case, the air purge valve 13 is opened and the compressor 6
After the bleed air from the
It is supplied 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かク
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。In this way, when using liquid fuel, the gas fuel control valve 11
The purpose of purging downstream of the combustor 5 with air is to prevent high-temperature combustion gas from cross-flowing between each combustion chamber through the fuel gas piping immediately before the combustor 5, and to purge the gas fuel nozzle while it is operating with liquid fuel. 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か、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, it switches from liquid fuel to gas fuel, or at this time, the gas fuel is directly introduced into the combustor 5 by creating a mixed atmosphere of fuel gas and air downstream of the gas fuel control valve 11. This is not desirable because it creates a risk 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］１の下
流側を、不活性ガスでパージするようにしている。Therefore, immediately before switching from liquid fuel to gas fuel, the downstream side of the gas fuel control valve 1, which had been performing air purging, is purged with inert gas.
不活性ガスパージは、空気パージ人口弁１３を閉じた後
、不活性ガス止弁１４を開とし、ある−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 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。ここて、ガス燃料圧力制御弁１
０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, a little before the inert gas purge, in preparation for the upcoming fuel switching, the fuel gas gate valve 9 is opened, and the fuel gas is allowed to flow up to just before the gas fuel pressure control valve 10, thereby warming the piping. Here, gas fuel pressure control valve 1
0 controls the front pressure of the gas fuel control valve 11, but also has a gas fuel cutoff 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］１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６１−２４３９３４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 for a predetermined time, the gas fuel pressure control valve 10 and the gas fuel control valve 1 are opened, and the fuel gas is introduced into the combustor 5, and fuel switching is performed. be exposed. This fuel switching is performed, for example, by a method as disclosed in Japanese Unexamined Patent Publication No. 61-243934.
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。To summarize the above fuel switching procedure while using liquid fuel,
It will look like below.
（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。(a) 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 gate 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ジ。(c) Inert gas purge 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 completing the inert gas purge, open the gas fuel control valve 11 and switch the fuel from liquid fuel to gas fuel.
（発明が解決しようとする課題）
」二連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の前までをウオ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 dual fuel switching according to the conventional technology, when the gas fuel gate valve 9 is opened and the area in front of the gas fuel pressure control valve 10 is warmed before switching to the gas fuel, , the fuel gas flows through the gas fuel pressure control valve 10 and the gas fuel control valve 11.
If the gas leaks and flows into the downstream of the gas fuel control valve 11 during air purging, a mixed atmosphere of gas fuel and air will be formed in this area, creating an oxygen-rich state that will cause an explosion even with a small amount of ignition medium. There is a risk.
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
ガスラインのウオーミング中に、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。The present invention was devised to solve these problems, and is designed to prevent leakage of fuel gas downstream of the gas fuel control valve during warming of the fuel gas line before switching from liquid to gas fuel. It is an object of the present invention to provide gas turbine equipment in which the risk of explosion is avoided by preventing gas fuel from mixing downstream of a gas fuel control valve between air purge and inert gas purge.
［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
二重燃料系統を有するガスタービンの燃料系統において
、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。[Structure of the Invention] (Means for Solving the Problems) The gas turbine equipment of the present invention has a dual fuel system that can burn liquid fuel and gas fuel and can mutually switch fuels during operation. In a fuel system of a gas turbine, an inert gas supply system is provided upstream of a gas fuel control valve, and while liquid fuel is being burned in the gas turbine, an inert gas supply system is provided upstream of the gas fuel control valve for purging downstream thereof. This device is characterized by being configured to supply inert gas at a pressure higher than that of air.
（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。(Function) As described above, in the gas turbine equipment of the present invention, high-pressure inert gas is supplied between the gas fuel pressure control valve and the gas fuel control valve (this supply pressure is the same as that of the gas fuel control valve). The downstream purge air pressure and the inert gas purge pressure shall be sufficiently higher than the pressure of the fuel gas) so that the fuel gas in front of the gas fuel pressure control valve and the air purge downstream of the gas fuel control valve are The air inside is cut off.
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 during piping warming up to the gas fuel pressure control valve before switching to gas fuel, and between the gas fuel pressure control valve and the gas fuel control valve,
Create a high-pressure inert gas atmosphere to prevent fuel gas leakage from forming a mixed gas fuel and air atmosphere downstream of the gas fuel control valve.
（実施例）
次に、図面を参照しながら本発明の詳細な説明する。な
お、第２図におけると同一部分には同−句号を付し、同
一部分の説明は、必要な場合を除き、省略する。(Example) Next, the present invention will be described in detail with reference to the drawings. Note that the same parts as in FIG. 2 are given the same symbol, and explanations 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
］１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か供給される。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 is connected between the gas fuel control valve 1 and the gas fuel pressure control valve 10. 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, inert gas from a high-pressure inert gas supply line 20 is supplied after being reduced in 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
を少量流してウオーミングを行う。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。In the equipment of the present invention having such a configuration, when switching the fuel system from liquid fuel to gas fuel, the inert gas gate valve 21 is first opened, and high pressure inert gas is supplied upstream of the gas fuel control valve 11. is supplied, and in order to warm the gas fuel piping to the gas turbine, the gas fuel gate valve 9 is slightly opened and a small amount of gas fuel is flowed upstream of the gas fuel pressure control valve 10 for 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
オーミングが完了すると、ガス燃料制御弁１］の下流の
不活性ガスパージが行なわれる。After a certain period of time has elapsed and warming upstream of the gas fuel pressure control valve 10 is completed, inert gas purge downstream of the gas fuel control valve 1 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人口弁９を閉じ、不
活性ガス１１．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。In this inert gas purge, first, the air purge artificial valve 9 provided on the outlet side of the air boosting compressor 12 is closed, and the inert gas 11. This is done by opening the valve 14 and introducing the low-pressure inert gas whose pressure has been reduced by the pressure reducing valve 22 downstream of the gas fuel control valve 11 .
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ＩＩ−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 II valve 14 is closed, and the high pressure inert gas gate valve 21 is also closed at the same time to end the inert gas purge, and the fuel gas gate valve 9 is opened and the gas Fuel gas is introduced into the combustor 5 while controlling the opening degrees of the fuel pressure control valve 10 and the gas fuel control valve 11, and the fuel is switched from liquid fuel 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］１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の全開時にリークがあっ
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, in order to avoid contact between the fuel gas and air when switching from liquid fuel to gas fuel, high-pressure inert gas is supplied upstream of the gas fuel control valve 1. By introducing and 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 opened, the back pressure can suppress the intrusion of the fuel gas, thereby preventing contact between the air on the downstream side of the gas fuel control valve 11 and the gas fuel.
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
、即ちガスタビンの燃焼器圧力（２０Ｋｇ／ｃ♂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 explanation, an example in which high-pressure inert gas is supplied before switching from liquid fuel to gas fuel has been described, but in the present invention, while the gas turbine is operating with liquid fuel, When the gas generation section is operating and the gas pressure in the fuel gas piping to the gas turbine is high to some extent, that is, the gas turbine combustor pressure (about 20 kg/c♂)
If the gas fuel supply pressure is higher than the above, there is a risk that the fuel gas will leak downstream of the gas fuel control valve 11. In such a case, there is always a high pressure An inert gas may be supplied.
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１１−することができる。この場合
の不活性ガス仕切弁２］の制御ロジック例を第３図に示
す。For example, if the gas pressure detector 23 indicates a predetermined pressure or higher while using liquid fuel, the inert gas gate valve 21 is kept open at all times to allow gas fuel to flow upstream of the gas fuel control valve 11. Intrusion can be prevented. An example of the control logic of the inert gas gate valve 2 in this case is shown in FIG.
［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押えることに
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 gas turbine equipment is operated with liquid fuel, by suppressing the formation of a mixed atmosphere of fuel gas and air caused by leakage of fuel gas, the mixture can be improved. It is possible to avoid the risk of explosion due to the gaseous fuel, and it is possible to safely switch from liquid fuel to gas fuel.
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
０・・・・・・・・・ガス燃料圧力制御弁１・・・・・
・・・・ガス燃料制御弁
２・・・・・・・・・昇圧コンプレッサ３・・・・・・
・・・空気パージ人口弁４・・・・・・・・・不活性ガ
ス止弁
Ｏ・・・・・・・・・高圧不活性ガス供給ラインド・・
・・・・・・不活性ガス仕切弁
２・・・・・・・・・減圧弁
３・・・・・・・・・ガス圧力検出器Fig. 1 is a system diagram showing an embodiment of the gas turbine equipment of the present invention, Fig. 2 is a system diagram illustrating conventional gas turbine equipment, and Fig. 3 is a control of an inert gas gate valve in a modification of the invention. It is a logic diagram. 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 section 9...Fuel gas gate valve 0...Gas fuel pressure control valve 1...
...Gas fuel control valve 2 ...... Boost compressor 3 ...
...Air purge population valve 4...Inert gas stop valve O...High pressure inert gas supply line...
...... Inert gas gate valve 2 ...... Pressure reducing valve 3 ...... Gas pressure detector
Claims (1)
互の燃料切替えが可能な二重燃料系統を有するガスター
ビンの燃料系統において、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
。In the fuel system of a gas turbine that has a dual fuel system that can burn liquid fuel and gas fuel and that can mutually switch fuels during operation, an inert gas supply system is installed upstream of the gas fuel control valve. and is configured to supply an inert gas at a pressure higher than the pressure of purge air downstream of the gas fuel control valve to the upstream side of the gas fuel control valve while the liquid fuel is being burned in the gas turbine. Gas turbine equipment.
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 true JPH0486335A (en) | 1992-03-18 |
| JP2856860B2 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 (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2002129981A (en) * | 2000-10-30 | 2002-05-09 | Toshiba Corp | Fuel supply system in gas turbine |
| JP2005098243A (en) * | 2003-09-26 | 2005-04-14 | Hitachi Ltd | Double fuel combustion gas turbine fuel supply system |
| US8261529B2 (en) | 2008-03-05 | 2012-09-11 | Hitachi, Ltd. | Gas turbine combustor and gaseous fuel supply method for gas turbine combustor |
| JP2013104427A (en) * | 2011-11-10 | 2013-05-30 | General Electric Co <Ge> | System for purging gas fuel circuit for gas turbine engine |
| JP2013139766A (en) * | 2012-01-04 | 2013-07-18 | General Electric Co <Ge> | System and method for monitoring fluid separation and/or monitoring health of valve |
| JP2014105575A (en) * | 2012-11-22 | 2014-06-09 | Mitsubishi Heavy Ind Ltd | System and method for controlling fluid supply to gas turbine combustor |
| CN104863717A (en) * | 2015-01-28 | 2015-08-26 | 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 for gas turbine fuel switching, and system thereof |
| JP2018071354A (en) * | 2016-10-24 | 2018-05-10 | 三菱日立パワーシステムズ株式会社 | Gas turbine combustor and method for operating the same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2818674A1 (en) * | 2013-06-28 | 2014-12-31 | Caterpillar Motoren GmbH & Co. KG | Ending operation of dual fuel engine in gaseous fuel mode |
| 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 |
Citations (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
Patent Citations (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 |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2002129981A (en) * | 2000-10-30 | 2002-05-09 | Toshiba Corp | Fuel supply system in gas turbine |
| JP2005098243A (en) * | 2003-09-26 | 2005-04-14 | Hitachi Ltd | Double fuel combustion gas turbine fuel supply system |
| US8261529B2 (en) | 2008-03-05 | 2012-09-11 | Hitachi, Ltd. | Gas turbine combustor and gaseous fuel supply method for gas turbine combustor |
| JP2013104427A (en) * | 2011-11-10 | 2013-05-30 | General Electric Co <Ge> | System for purging gas fuel circuit for gas turbine engine |
| JP2013139766A (en) * | 2012-01-04 | 2013-07-18 | General Electric Co <Ge> | System and method for monitoring fluid separation and/or monitoring health of valve |
| JP2014105575A (en) * | 2012-11-22 | 2014-06-09 | Mitsubishi Heavy Ind Ltd | System and method for controlling fluid supply to gas turbine combustor |
| CN104863717A (en) * | 2015-01-28 | 2015-08-26 | 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 for gas turbine fuel switching, and system thereof |
| JP2018071354A (en) * | 2016-10-24 | 2018-05-10 | 三菱日立パワーシステムズ株式会社 | Gas turbine combustor and method for operating the same |
| US10794296B2 (en) | 2016-10-24 | 2020-10-06 | Mitsubishi Hitachi Power Systems, Ltd. | Gas turbine combustor and method of operating the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2856860B2 (en) | 1999-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2758301B2 (en) | Gas turbine combustor | |
| JP4979615B2 (en) | Combustor and fuel supply method for combustor | |
| US8572977B2 (en) | Combustor of a gas turbine engine | |
| JP4509270B2 (en) | Fuel delivery apparatus and method | |
| JPH0250026A (en) | Gas turbine combustor and its operation method | |
| JP6285807B2 (en) | Gas turbine combustor | |
| JPH0486335A (en) | Gas turbine equipment | |
| CN102095584B (en) | Hydrogen-rich /oxygen-rich gas combustion tester and test method | |
| NO321264B1 (en) | Method and apparatus for reducing gas turbine emissions | |
| JPH0411729B2 (en) | ||
| JP2002257345A (en) | Premix combustor for gas turbine and its fuel supply controller and controlling method | |
| JPH06272851A (en) | Heat storage type low nox burner | |
| JPH07318059A (en) | Gas turbine burner | |
| JP2000097435A (en) | Gas turbine combustor | |
| JPH06213456A (en) | Combustion device for gas turbine and its fuel control device | |
| JP2000274689A (en) | Multi-shaft gas turbine | |
| JP2004510122A (en) | Fuel supply method to premix burner | |
| JP2002201966A (en) | Premixing combustor for gas turbine and its fuel supply control method | |
| JPS63255531A (en) | Fuel feeding device of gas turbine | |
| JPH04124520A (en) | Gas turbine combustor | |
| JP3472424B2 (en) | Gas turbine and method of operating gas turbine | |
| JP2002106824A (en) | Combustion type exhaust gas treating device | |
| JP2004190975A (en) | Fuel supply circuit of ignition device in combustor of gas turbine engine | |
| JPS6166019A (en) | Gas turbine combustor | |
| JP3066777B2 (en) | Fuel control device for gas turbine combustor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |