JP2999081B2 - Combined cycle plant - Google Patents
Combined cycle plantInfo
- Publication number
- JP2999081B2 JP2999081B2 JP32537092A JP32537092A JP2999081B2 JP 2999081 B2 JP2999081 B2 JP 2999081B2 JP 32537092 A JP32537092 A JP 32537092A JP 32537092 A JP32537092 A JP 32537092A JP 2999081 B2 JP2999081 B2 JP 2999081B2
- Authority
- JP
- Japan
- Prior art keywords
- steam
- pressure
- cooling
- turbine
- medium
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
- F01K23/106—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle with water evaporated or preheated at different pressures in exhaust boiler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、ガスタービン蒸気ター
ビンコンバインドプラントのガスタービンに使用されて
いる燃焼器の冷却に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to cooling of a combustor used in a gas turbine of a gas turbine steam turbine combined plant.
【０００２】[0002]
【従来の技術】図３は従来のガスタービン燃焼器の空気
冷却システムの一例を示す系統図である。ガスタービン
は、千数百度の燃焼ガスを作動流体として使用する内燃
機関であり、使用される材料の信頼性を増すために空気
による冷却が行なわれている。コンプレッサ（１）で大
気圧より加圧された空気の大部分は、燃焼器（２）の中
に導かれ燃料の燃焼用空気として使用される。そして、
燃料の発熱反応により千数百度の燃焼ガスが生成され
る。したがって燃焼器（２）を形成する材料はそのまま
ではガス温度と同一の温度まで加熱されて溶融する可能
性がある。そこでコンプレッサ（１）で加圧された空気
の１部によって燃焼器（２）の外表面を冷却し、燃焼器
の温度を下げて溶融を防止するとともに、信頼性の確保
に努めている。なお図３中（３）はガスタービン、（１
９）は発電機である。2. Description of the Related Art FIG. 3 is a system diagram showing an example of a conventional air cooling system for a gas turbine combustor. A gas turbine is an internal combustion engine that uses a thousand hundred degrees of combustion gas as a working fluid, and is cooled by air in order to increase the reliability of materials used. Most of the air pressurized from the atmospheric pressure by the compressor (1) is guided into the combustor (2) and used as fuel combustion air. And
The exothermic reaction of the fuel produces combustion gas of several hundred degrees. Therefore, the material forming the combustor (2) may be heated to the same temperature as the gas temperature and melted as it is. Therefore, the outer surface of the combustor (2) is cooled by a part of the air pressurized by the compressor (1), the temperature of the combustor is reduced to prevent melting, and efforts are made to ensure reliability. In addition, (3) in FIG. 3 is a gas turbine, (1)
9) is a generator.
【０００３】[0003]
【発明が解決しようとする課題】ガスタービンの燃焼温
度の高温化に伴い、燃焼に供されるコンプレッサ圧縮空
気の割合が増大する一方、ガスタービン構成機器のうち
燃焼器，動・静翼，タービンディスク等，冷却を必要と
する部分が増加しているので、コンプレッサから抽気す
るのみでは冷却用空気を賄いきれず、外部から冷却媒体
（例えば水，蒸気，空気等）を供給することが不可欠と
なってきている。As the combustion temperature of a gas turbine rises, the proportion of compressed air supplied to the combustion increases, while the combustors, moving and stationary vanes, and turbines among the components of the gas turbine. Since the number of parts requiring cooling, such as disks, is increasing, it is indispensable to supply a cooling medium (eg, water, steam, air, etc.) from the outside, because cooling air cannot be supplied only by extracting air from the compressor. It has become to.
【０００４】ところで最近のガスタービンは、蒸気サイ
クルを結合したコンバインドプラントの構成機器の一部
として使用される機会が多く、そのような場合には蒸気
サイクルから蒸気を冷却媒体として供給することができ
る。すなわち蒸気サイクルから蒸気を取り、燃焼器等を
冷却する蒸気として使用することになるが、燃焼器の器
内圧力や燃焼器を冷却して自らは加熱された蒸気の高い
温度等を考えると、その蒸気を蒸気サイクル中のどこか
ら得てどこへ戻すかが重要な問題になる。Incidentally, recent gas turbines are often used as a part of components of a combined plant in which a steam cycle is connected. In such a case, steam can be supplied from the steam cycle as a cooling medium. . In other words, steam is taken from the steam cycle and used as steam for cooling the combustor, etc., considering the internal pressure of the combustor and the high temperature of the steam heated by cooling the combustor itself, Somewhere in the steam cycle
The key issue is how to get it and get it back.
【０００５】図４は、冷却媒体として蒸気を使用する場
合容易に考えられる冷却システムの一例を示す系統図で
ある。図中（１）は空気圧縮機，（２）は燃焼器，
（３）はガスタービン，（４）は排熱回収ボイラ，
（５）は高圧過熱器，（６）は再熱器，（７）は高圧蒸
発器，（８）は高圧節炭器，（９）は中圧過熱器，（１
０）は低圧過熱器，（１１）は中圧蒸発器，（１２）は
中圧ドラム，（１３）は高・中圧節炭器，（１４）は低
圧蒸発器，（１５）は低圧節炭器，（１６）は高圧蒸気
タービン，（１７）は中圧蒸気タービン，（１８）は低
圧蒸気タービン，（１９）はガスタービン発電機，（２
０）は蒸気タービン発電機をそれぞれ示す。FIG. 4 is a system diagram showing an example of a cooling system which can be easily considered when using steam as a cooling medium. In the figure, (1) is an air compressor, (2) is a combustor,
(3) is a gas turbine, (4) is a heat recovery steam generator,
(5) is a high pressure superheater, (6) is a reheater, (7) is a high pressure evaporator, (8) is a high pressure economizer, (9) is a medium pressure superheater, (1)
0) is a low-pressure superheater, (11) is a medium-pressure evaporator, (12) is a medium-pressure drum, (13) is a high-medium-pressure economizer, (14) is a low-pressure evaporator, and (15) is a low-pressure evaporator. (16) is a high-pressure steam turbine, (17) is a medium-pressure steam turbine, (18) is a low-pressure steam turbine, (19) is a gas turbine generator, (2)
0) indicates a steam turbine generator.
【０００６】図４では、コンバインドプラントの再熱蒸
気システムの高圧タービン（１６）の高圧排気蒸気の一
部を、冷却蒸気としてガスタービンの燃焼器（２）に導
き、冷却媒体とし使用する。そして加熱されて高温にな
った蒸気は、圧力・温度の両条件とも適した中圧タービ
ン（１７）の中間段に導入され、中圧および低圧タービ
ン（１８）の駆動エネルギーの一部として使用される。In FIG. 4, a part of the high-pressure exhaust steam of the high-pressure turbine (16) of the reheat steam system of the combined plant is guided as cooling steam to the combustor (2) of the gas turbine and used as a cooling medium. The steam heated to a high temperature is introduced into an intermediate stage of the medium-pressure turbine (17) suitable for both pressure and temperature conditions, and is used as a part of driving energy of the medium-pressure and low-pressure turbines (18). You.
【０００７】しかしながら、図４に示されるような冷却
システムの場合、中圧タービン（１７）の中間段におい
ては、再熱蒸気が既に仕事をして温度的にも下がった状
態にあり、高圧排気温度との温度差も大きくないので、
冷却媒体の効果としては十分でない。However, in the case of the cooling system as shown in FIG. 4, in the intermediate stage of the intermediate-pressure turbine (17), the reheated steam has already worked and has been lowered in temperature, and the high-pressure exhaust Since the temperature difference from the temperature is not large,
The effect of the cooling medium is not sufficient.
【０００８】[0008]
【課題を解決するための手段】本発明は前記従来の課題
を解決するために、 ガスタービンの排ガスを熱源とす
る排ガスボイラで発生した蒸気により蒸気タービンを駆
動するものにおいて、前記排ガスボイラの中圧ドラムか
ら中圧過熱器に至る蒸気の一部を分岐して前記ガスター
ビンの燃焼器の冷却に使用し、冷却後の前記蒸気を再熱
蒸気系統に回収することを特徴とするコンバインドサイ
クルプラントを提案するものである。また、本発明は、
前記において、前記中圧過熱器からの蒸気は再熱器
の上流に連接されることを特徴とするコンバインドサイ
クルプラントを提案するものである。 更にまた、本発明
は、前記において、前記再熱蒸気系統からの蒸気を
中圧蒸気タービンに導入することを特徴とするコンバイ
ンドサイクルプラントを提案するものである。 SUMMARY OF THE INVENTION The present invention relates to the above-mentioned conventional problems.
To solve Gas turbineExhaust gasAs a heat source
Steam turbine driven by steam generated by the exhaust gas boiler
In what moves,SaidExhaust gas boiler medium pressure drum?
From the steam to the superheaterSaidGaster
Used to cool bottle combustors,Reheat the steam after cooling
Recover to steam systemCombined rhinoceros
This is to propose a cruise plant.Also, the present invention
In the above, the steam from the intermediate pressure superheater is a reheater
Characterized by being connected upstream of
This is to propose a cruise plant. Furthermore, the present invention
In the above, the steam from the reheat steam system
Combination characterized by being introduced into a medium-pressure steam turbine
This is to propose a second cycle plant.
【０００９】[0009]
【作用】本発明の前記においては、ガスタービン燃焼
器の冷却を蒸気で行い、かつ、このための冷却媒体とし
て中圧ドラムの蒸気を使用するので、燃焼器の器内圧力
以上という圧力条件を満足する他の抽気源よりも低温の
蒸気を冷却蒸気として供給でき、高い冷却効果が得られ
る。そして、冷却媒体として使用して加熱された蒸気を
再熱蒸気系統に導入するので、熱エネルギーが回収さ
れ、プラント効率が向上する。また、中圧ドラムの圧力
を必要に応じて冷却系統の圧力損失に見合うよう設定す
れば、圧力損失によるエネルギー損失を最低限に抑え
て、蒸気タービンの出力ゲインを大きく確保することが
できる。本発明の前記においては、前記ガスタービン
燃焼器の冷却用として分岐された 中圧ドラムからの蒸気
の残部は、中圧過熱器を経て再熱器の上流に連接されて
後流に供給される。また、本発明の前記においては、
前記ガスタービン燃焼器を冷却した冷却蒸気は、再熱蒸
気系統を経て中圧蒸気タービンに導入されて所定の仕事
を行う。 [Action] In the foregoing the present invention, a gas turbine combustion
Since the steam is cooled by the steam and the medium pressure drum steam is used as the cooling medium for this , the steam cooled at a lower temperature than other bleed air sources satisfying the pressure condition of the internal pressure of the combustor or higher is cooled. It can be supplied as steam, and a high cooling effect can be obtained. And the heated steam is used as a cooling medium
Since it is introduced into the reheat steam system , heat energy is recovered, and plant efficiency is improved. In addition, if the pressure of the intermediate pressure drum is set as necessary to match the pressure loss of the cooling system, the energy loss due to the pressure loss can be minimized, and a large output gain of the steam turbine can be secured. In the above of the present invention, the gas turbine
Steam from a medium-pressure drum branched for cooling the combustor
The rest is connected upstream of the reheater via a medium pressure superheater
It is supplied to the wake. Further, in the above of the present invention,
The cooling steam that has cooled the gas turbine combustor is reheated steam.
Is introduced into the medium-pressure steam turbine through the
I do.
【００１０】[0010]
【実施例】図１は本発明の第１実施例を示す系統図であ
る。この図において、前記図４により説明したシステム
と同様の部分については、冗長になるのを避けるため、
同一の符号を付け詳しい説明を省く。FIG. 1 is a system diagram showing a first embodiment of the present invention. In this figure, the same parts as those of the system described with reference to FIG.
The same reference numerals are given and the detailed description is omitted.
【００１１】本実施例においては、ガスタービン燃焼器
（２）の冷却用蒸気として、コンバインドプラントの再
熱蒸気サイクルを構成する中圧ドラム（１２）で発生し
た蒸気を使用する。すなわち、燃焼器（２）の内圧は１
６〜１７ata であるから、それと適度な差圧を有する圧
力レベルが必要で、圧力は高圧排気よりも幾分高く、温
度は逆にかなり低い中圧ドラム（１２）の飽和蒸気（４
５ata ）を、燃焼器（２）の冷却用として抽気するので
ある。そして、その蒸気が蒸気サイクルの再熱蒸気温度
とほぼ等しくなるまで加熱されるように、燃焼器（２）
を冷却した後、再熱蒸気系統に戻し、排ガスボイラ
（４）の再熱器（６）から来た再熱蒸気と混合して中圧
蒸気タービン（１７）の入口に導入し、中圧蒸気タービ
ン（１７），更には低圧蒸気タービン（１８）を駆動す
るエネルギーの一部として使用する。これは、蒸気ター
ビンに蒸気を回収することにより出力を増強するのが目
的なので、中圧タービン（１７）の入口に蒸気を投入す
る方が中間段に投入するよりも大出力が得られるからで
ある。In the present embodiment, as the cooling steam for the gas turbine combustor (2), the steam generated in the medium pressure drum (12) constituting the reheating steam cycle of the combined plant is used. That is, the internal pressure of the combustor (2) is 1
Since the pressure is 6 to 17 ata, a pressure level having a moderate differential pressure is required, the pressure is somewhat higher than that of the high pressure exhaust, and the temperature is conversely considerably lower than that of the saturated steam (4) of the medium pressure drum (12).
5ata) is extracted for cooling the combustor (2). The combustor (2) is then heated so that the steam is heated until it is substantially equal to the reheat steam temperature of the steam cycle.
After cooling, the steam is returned to the reheat steam system, mixed with reheat steam coming from the reheater (6) of the exhaust gas boiler (4), and introduced into the inlet of the medium pressure steam turbine (17). It is used as part of the energy for driving the turbine (17) and also the low-pressure steam turbine (18). This is because the purpose is to increase the output by recovering the steam in the steam turbine, so that a larger output can be obtained by feeding steam to the inlet of the intermediate pressure turbine (17) than by feeding it to the intermediate stage. is there.
【００１２】前記のように本実施例では、燃焼器（２）
の冷却用媒体として中圧ドラム（１２）の蒸気を使用す
るので、圧力条件（燃焼器（２）の器内圧力以上）を満
足する他の抽気源よりも低温の蒸気を冷却蒸気として供
給でき、高い冷却効果が得られる。もし高圧蒸気タービ
ン（１６）の出口排気から冷却蒸気をとった場合、冷却
蒸気系の圧損次第では、中圧タービン（１７）の入口で
はなく中間段に戻す必要が生じるが、その場合は、主流
との温度差の関係で、燃焼器冷却後の加熱蒸気の温度が
低く制約される。しかし本実施例では中圧ドラム（１
２）から抽気するので、高い冷却効果が得られるのであ
る。As described above , in this embodiment, the combustor (2)
Since the steam of the medium pressure drum (12) is used as the cooling medium for the above, steam having a lower temperature than other extraction sources satisfying the pressure conditions (not less than the internal pressure of the combustor (2)) can be supplied as cooling steam. , A high cooling effect can be obtained. If cooling steam is taken from the outlet exhaust of the high-pressure steam turbine (16), it is necessary to return to the intermediate stage instead of the inlet of the intermediate-pressure turbine (17) depending on the pressure loss of the cooling steam system. The temperature of the heated steam after the cooling of the combustor is limited to a low value due to the temperature difference between the temperature and the temperature. However, in this embodiment, the medium pressure drum (1
Since the air is extracted from 2), a high cooling effect can be obtained.
【００１３】次に図２は本発明の第２実施例を示す系統
図である。この図においても、前記と同様の部分につい
ては、同一の符号を付け詳しい説明を省略する。FIG. 2 is a system diagram showing a second embodiment of the present invention. Also in this figure, the same parts as those described above are denoted by the same reference numerals, and detailed description is omitted.
【００１４】本実施例においては、中圧ドラム（１２）
出口の中圧過熱器（９）に至る蒸気ラインに圧力調整弁
（２１）が設けられている。したがって、ガスタービン
燃焼器（２）を冷却する冷却蒸気系統の圧力損失が大き
くて圧力差が十分に得難い場合でも、この圧力調整弁
（２１）を調節することによって、中圧ドラム（１２）
の器内圧力を高め、必要な差圧を確保することができ
る。In this embodiment, the medium pressure drum (12)
A pressure regulating valve (21) is provided in the steam line leading to the intermediate pressure superheater (9) at the outlet. Therefore, even when the pressure loss of the cooling steam system for cooling the gas turbine combustor (2) is large and it is difficult to obtain a sufficient pressure difference, adjusting the pressure regulating valve (21) allows the medium pressure drum (12) to be adjusted.
, The necessary pressure difference can be secured.
【００１５】このようにして、冷却媒体として高圧ター
ビン（１６）の排気よりも望ましい低い温度で、かつ再
熱蒸気系統に戻すに十分な差圧を有し、更に絶対圧力と
しても燃焼器器内圧力より十分高い蒸気を、抽気するこ
とができる。そしてエネルギー的にも損失を最少限に抑
えた冷却システムとすることができる。[0015] In this way, the cooling medium has a lower temperature than the exhaust of the high-pressure turbine (16), and has a pressure difference sufficient to return to the reheated steam system. Steam sufficiently above the pressure can be bled. In addition, a cooling system that minimizes energy loss can be provided.
【００１６】[0016]
【発明の効果】本願の発明においては、低い温度の蒸気
を燃焼器の冷却蒸気として供給することにより、燃焼器
の冷却効果を高め、ガスタービンの燃焼温度の高温化に
必要な燃焼用空気を十分確保できるので、コンバインド
サイクルプラントの高効率化に必要なガスタービンの高
温化が容易に達成される。また、少ない冷却蒸気で効率
の良い冷却効果が得られ、更に系統圧損に見合った圧力
に調整して絞り損失を減少させることにより、エネルギ
ー損失を低減させることができる。According to the present invention, the low temperature steam is supplied as the cooling steam for the combustor to enhance the cooling effect of the combustor, and the combustion air necessary for increasing the combustion temperature of the gas turbine is increased. Since it is possible to sufficiently secure the temperature, the temperature of the gas turbine required for increasing the efficiency of the combined cycle plant can be easily increased. In addition, an efficient cooling effect can be obtained with a small amount of cooling steam, and the energy loss can be reduced by adjusting the pressure to a value corresponding to the system pressure loss and reducing the throttle loss.
【図１】図１は本発明の第１実施例を示す系統図であ
る。FIG. 1 is a system diagram showing a first embodiment of the present invention.
【図２】図２は本発明の第２実施例を示す系統図であ
る。FIG. 2 is a system diagram showing a second embodiment of the present invention.
【図３】図３は従来のガスタービン燃焼器の空気冷却シ
ステムの一例を示す系統図である。FIG. 3 is a system diagram showing an example of a conventional air cooling system for a gas turbine combustor.
【図４】図４は冷却媒体として蒸気を使用する場合容易
に考えられる冷却システムの一例を示す系統図である。FIG. 4 is a system diagram showing an example of a cooling system that can be easily considered when using steam as a cooling medium.
（１） 空気圧縮機 （２） 燃焼器 （３） ガスタービン （４） 排熱回収ボイラ （５） 高圧過熱器 （６） 再熱器 （７） 高圧蒸発器 （８） 高圧節炭器 （９） 中圧過熱器 （１０） 低圧過熱器 （１１） 中圧蒸発器 （１２） 中圧ドラム （１３） 高・中圧節炭器 （１４） 低圧蒸発器 （１５） 低圧節炭器 （１６） 高圧蒸気タービン （１７） 中圧蒸気タービン （１８） 低圧蒸気タービン （１９） ガスタービン発電機 （２０） 蒸気タービン発電機 （２１） 中圧ドラム圧力調整弁 (1) Air compressor (2) Combustor (3) Gas turbine (4) Waste heat recovery boiler (5) High pressure superheater (6) Reheater (7) High pressure evaporator (8) High pressure economizer (9) ) Medium pressure superheater (10) Low pressure superheater (11) Medium pressure evaporator (12) Medium pressure drum (13) High / medium pressure economizer (14) Low pressure evaporator (15) Low pressure economizer (16) High pressure steam turbine (17) Medium pressure steam turbine (18) Low pressure steam turbine (19) Gas turbine generator (20) Steam turbine generator (21) Medium pressure drum pressure regulating valve
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F01K 23/10 F01N 3/30 F02C 7/16 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) F01K 23/10 F01N 3/30 F02C 7/16
Claims (3)
スボイラで発生した蒸気により蒸気タービンを駆動する
ものにおいて、前記排ガスボイラの中圧ドラムから中圧
過熱器に至る蒸気の一部を分岐して前記ガスタービンの
燃焼器の冷却に使用し、冷却後の前記蒸気を再熱蒸気系
統に回収することを特徴とするコンバインドサイクルプ
ラント。A steam turbine driven by steam generated by an exhaust gas boiler using exhaust gas of a gas turbine as a heat source, wherein a part of steam from an intermediate pressure drum of the exhaust gas boiler to a medium pressure superheater is branched. It was used to cool the combustor of the gas turbine, reheat steam system of the steam after cooling
Combined cycle plant characterized by the ability to collect waste.
流に連接されることを特徴とする請求項１に記載のコン
バインドサイクルプラント。 2. The steam from said medium pressure superheater is passed over a reheater.
2. The condenser according to claim 1, wherein the condenser is connected to a flow.
Bind cycle plant.
タービンに導入することを特徴とする請求項１に記載の
コンバインドサイクルプラント。 3. The steam from the reheat steam system is a medium pressure steam.
2. The method according to claim 1, wherein the gas is introduced into a turbine.
Combined cycle plant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32537092A JP2999081B2 (en) | 1992-12-04 | 1992-12-04 | Combined cycle plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32537092A JP2999081B2 (en) | 1992-12-04 | 1992-12-04 | Combined cycle plant |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11043349A Division JP3133034B2 (en) | 1999-02-22 | 1999-02-22 | Combined cycle plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06173616A JPH06173616A (en) | 1994-06-21 |
| JP2999081B2 true JP2999081B2 (en) | 2000-01-17 |
Family
ID=18176080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32537092A Expired - Fee Related JP2999081B2 (en) | 1992-12-04 | 1992-12-04 | Combined cycle plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2999081B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3500020B2 (en) * | 1996-11-29 | 2004-02-23 | 三菱重工業株式会社 | Steam cooled gas turbine system |
-
1992
- 1992-12-04 JP JP32537092A patent/JP2999081B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06173616A (en) | 1994-06-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6499302B1 (en) | Method and apparatus for fuel gas heating in combined cycle power plants | |
| CA2230347C (en) | Steam cooled gas turbine system | |
| US6442941B1 (en) | Compressor discharge bleed air circuit in gas turbine plants and related method | |
| EP0939202B1 (en) | Steam cooled gas turbine system | |
| US5412937A (en) | Steam cycle for combined cycle with steam cooled gas turbine | |
| JP3652962B2 (en) | Gas turbine combined cycle | |
| US20110088404A1 (en) | Reheat gas turbine | |
| US6244039B1 (en) | Combined cycle plant having a heat exchanger for compressed air | |
| US20090056341A1 (en) | Method and apparatus for facilitating cooling of a steam turbine component | |
| US6038851A (en) | Exhaust re-combustion type combined cycle power generation plant | |
| US9074491B2 (en) | Steam cycle system with thermoelectric generator | |
| JP2699808B2 (en) | Steam-cooled gas turbine combined plant | |
| JPH11173111A (en) | Thermal power plant | |
| JP2999081B2 (en) | Combined cycle plant | |
| Rice | The Reheat Gas Turbine With Steam-Blade Cooling—A Means of Increasing Reheat Pressure, Output, and Combined Cycle Efficiency | |
| JP2984442B2 (en) | Gas turbine steam cooling method and apparatus | |
| JP3133034B2 (en) | Combined cycle plant | |
| JPH06212909A (en) | Compound electric power plant | |
| JPH1113488A (en) | Full fired heat recovery combined plant using steam cooling type gas turbine | |
| JPH01208524A (en) | Steam injection type gas turbine engine | |
| JP3389019B2 (en) | Steam cooled gas turbine | |
| JP2002221007A (en) | Thermal power generation plant | |
| JP2960371B2 (en) | Hydrogen combustion turbine plant | |
| JP3059115B2 (en) | Hydrogen combustion turbine plant | |
| JPH07119413A (en) | Steam cooled gas turbine combined plant |
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: 19991005 |
|
| LAPS | Cancellation because of no payment of annual fees |