JPH03271507A - Compound generation plant - Google Patents
Compound generation plantInfo
- Publication number
- JPH03271507A JPH03271507A JP6976890A JP6976890A JPH03271507A JP H03271507 A JPH03271507 A JP H03271507A JP 6976890 A JP6976890 A JP 6976890A JP 6976890 A JP6976890 A JP 6976890A JP H03271507 A JPH03271507 A JP H03271507A
- Authority
- JP
- Japan
- Prior art keywords
- secondary medium
- turbine
- power plant
- thermal power
- plant
- 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.)
- Pending
Links
- 150000001875 compounds Chemical class 0.000 title 1
- 239000000446 fuel Substances 0.000 claims abstract description 5
- 238000010248 power generation Methods 0.000 claims description 18
- 239000003949 liquefied natural gas Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002826 coolant Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000013535 sea water Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical compound F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (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、超電導発電機を用いた複合発電プラントに関
する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a combined power generation plant using a superconducting generator.
（従来の技術）
超電導発電プラントは、超電導発電機と、この超電導発
電機を駆動する駆動機（モータ、水車、蒸気タービン等
）と、超電導発電機の超電導巻線を冷却する冷却媒体（
液化Ｈｅ、液化Ｎ２．Ｈｅガス、Ｈ２ガス）を供給する
ための冷却装置とから構成されている。このような超電
導発電プラントの起動にあっては、駆動機によって超電
導発電機を回転させ、超電導発電機に対し冷却装置より
冷却媒体を供給する。超電導発電機は徐々に冷却され超
電導状態となるまで冷却される。すなわち、超電導発電
機として機能する状態になってから、超電導発電機の励
磁が活がされ発電が行われる。ここで、超電導発電プラ
ントの冷却装置は、超電導発電機に冷却媒体を供給して
超電導巻線を冷却し、冷却をし終えた冷却媒体を超電導
発電機より回収して液体Ｈｅ等に再生する機能を有して
いる。(Prior Art) A superconducting power generation plant consists of a superconducting generator, a driving machine (motor, water wheel, steam turbine, etc.) that drives the superconducting generator, and a cooling medium (cooling medium) that cools the superconducting windings of the superconducting generator.
Liquefied He, liquefied N2. A cooling device for supplying He gas, H2 gas). When starting up such a superconducting power generation plant, the superconducting generator is rotated by a drive machine, and a cooling medium is supplied to the superconducting generator from a cooling device. The superconducting generator is gradually cooled until it becomes superconducting. That is, after the superconducting generator becomes in a state where it functions as a superconducting generator, the excitation of the superconducting generator is activated and power generation is performed. Here, the cooling device of the superconducting power plant has the function of supplying a cooling medium to the superconducting generator to cool the superconducting windings, recovering the cooled medium from the superconducting generator, and regenerating it into liquid He, etc. have.
（発明が解決しようとする課題）
ところが、このような超電導発電プラントでは超勤時に
おいて５冷却媒体が超電導発電機に均一に供給できるよ
うにするため、超電導発電機を回転させながら冷却装置
によって冷却する必要がある。現状では超電導発電機の
冷却時の睨動源はタービンのターニングモータによる能
動となっているが、通常火力発電所におけるターニング
回転数（毎分１０回転）と異なり、毎分数百回転でのタ
ーニングを行う必要があるので、ターニングモータの容
量が大きくなる。(Problem to be solved by the invention) However, in such a superconducting power generation plant, in order to uniformly supply the cooling medium to the superconducting generator during overtime, the superconducting generator is cooled by a cooling device while rotating. There is a need. Currently, the source of glare during cooling of superconducting generators is an active turning motor of the turbine, but unlike the turning speed (10 revolutions per minute) in normal thermal power plants, the turning speed is several hundred revolutions per minute. Since it is necessary to perform this, the capacity of the turning motor increases.
また、超電導発電機のターニングは発電機の停止中にお
いても回転を維持し、冷却媒体が遠心力によってロータ
内で均一な液面を保つようにする必要がある。Furthermore, when turning a superconducting generator, it is necessary to maintain rotation even when the generator is stopped, so that the cooling medium maintains a uniform liquid level within the rotor due to centrifugal force.
このように超電導発電機の起動時における駆動源は停止
中においても使用されるので重要なものである。そこで
、超電導発電機に直結したタービンを駆動源とすること
も考えられるが、そうするとタービントリップ時の高速
ターニングができない。このため、直流モータ駆動等の
大型で信頼性のある駆動源が必要であり、経済的なもの
でなかった・
［発明の構成］
（課題を解決するための手段）
本発明は液化天然ガスを燃料とする火力発電プラントの
蒸気タービンと、二次媒体クローズドサイクル発電プラ
ントの二次媒体タービンと、超電導発電機とを直結し、
火力発電プラントに供給される液化天然ガスにより二次
媒体クローズドサイクル発電プラントの二次媒体を凝縮
するようにしたものである。In this way, the drive source used when starting up the superconducting generator is important because it is used even when the generator is stopped. Therefore, it is conceivable to use a turbine directly connected to a superconducting generator as the drive source, but this would not allow high-speed turning during turbine tripping. For this reason, a large and reliable drive source such as a DC motor drive is required, which is not economical. [Structure of the Invention] (Means for Solving the Problem) The present invention Directly connects the steam turbine of the thermal power plant that uses the fuel, the secondary medium turbine of the secondary medium closed cycle power plant, and the superconducting generator,
The secondary medium of the closed cycle power plant is condensed by liquefied natural gas supplied to the thermal power plant.
（作用）
本発明では二次媒体を火力発電プラントの燃料である液
化天然ガスによって凝縮し、この凝縮した二次媒体を海
水で蒸発させて二次媒体タービンを駆動しこれにより超
電導発電機のターニングおよび発電を行う。(Function) In the present invention, the secondary medium is condensed with liquefied natural gas, which is the fuel of a thermal power plant, and the condensed secondary medium is evaporated with seawater to drive the secondary medium turbine, thereby turning the superconducting generator. and generate electricity.
（実施例）
超電導発電機１１は火力発電プラントの蒸気タービン１
２および二次媒体タービン１３と直結され、双方のター
ビン１２．１３から駆動される。この超電導発電機１１
は冷却袋Ｍ１４からの冷却媒体により冷却され超電導状
態を保っている。(Example) The superconducting generator 11 is a steam turbine 1 of a thermal power plant.
2 and secondary medium turbine 13, and is driven by both turbines 12 and 13. This superconducting generator 11
is cooled by the cooling medium from the cooling bag M14 and maintains a superconducting state.
二次媒体クローズドサイクル発電プラントは、二次媒体
タービン１３と、この二次媒体タービン】３を駆動する
ための二次媒体１５を蒸発させる蒸発器１６と、二次媒
体タービン１３で仕事を終えた二次媒体１５を凝縮する
凝縮器１７と、凝縮した二次媒体１５を蒸発器】６に供
給するためのポンプ１８とからなっている。ここで、本
発明では二次媒体Ｉ５として、たとえばフロンガスのよ
うな低沸点のものを使用する。A secondary medium closed cycle power plant completes the work with a secondary medium turbine 13, an evaporator 16 for evaporating the secondary medium 15 for driving the secondary medium turbine 3, and a secondary medium turbine 13. It consists of a condenser 17 for condensing the secondary medium 15, and a pump 18 for supplying the condensed secondary medium 15 to the evaporator 6. Here, in the present invention, a low boiling point material such as fluorocarbon gas is used as the secondary medium I5.
一方、火力発電プラントは、蒸気タービン１２と、この
蒸気タービン１２に蒸気を供給するボイラ１９と、蒸気
タービン１２で仕事を終えた蒸気を水に戻す復水器２０
と、燃料である液化天然ガス（ＬＮＧ）を気化させる蒸
発器２１とからなっている。液化天然ガス（ＬＮＧ）は
火力発電プラントに供給される途中において、二次媒体
クローズドサイクルを構成する凝縮器１７によって、二
次媒体１５を凝縮する。凝縮された二次媒体はポンプ１
８によって蒸発器１６に送られ、ここで海水によって蒸
発する。この蒸発エネルギーによって二次媒体タービン
１３が能動される。On the other hand, a thermal power plant includes a steam turbine 12, a boiler 19 that supplies steam to the steam turbine 12, and a condenser 20 that returns the steam that has finished working in the steam turbine 12 to water.
and an evaporator 21 that vaporizes liquefied natural gas (LNG) as fuel. While liquefied natural gas (LNG) is being supplied to a thermal power plant, a secondary medium 15 is condensed by a condenser 17 that constitutes a secondary medium closed cycle. The condensed secondary medium is transferred to pump 1
8 to an evaporator 16 where it is evaporated by seawater. The secondary medium turbine 13 is activated by this evaporation energy.
二次媒体タービン６に直結された超電導発電機７はこれ
によって回転し、ターニングおよび発電が可能となる。The superconducting generator 7 directly connected to the secondary medium turbine 6 is thereby rotated, allowing turning and power generation.
液化天然ガス（ＬＮＰ）は凝縮器１７を経由した後、蒸
発器２１によって蒸発し、火力発電プラントのボイラ１
９に燃料として送られ、ここで発生する燃焼エネルギー
によってすなわち、蒸気によって蒸気タービン１０を駆
動する。このように構成された複合発電プラントの運転
は、二次媒体クローズドサイクル発電プラントによって
低速ターニング、高速ターニング、そして低負荷発電運
転を行う。また、火力発電プラントによって、高負荷運
転を行う。After passing through the condenser 17, liquefied natural gas (LNP) is evaporated by the evaporator 21, and then sent to the boiler 1 of the thermal power plant.
The steam turbine 10 is driven by the combustion energy generated there, that is, by the steam. The combined power generation plant configured in this manner performs low-speed turning, high-speed turning, and low-load power generation operation using a secondary medium closed cycle power generation plant. In addition, the thermal power plant will perform high-load operation.
超電導発電機１１には、その運転中、冷却媒体たとえば
液体Ｈｅが冷却装置１４から供給されているが、火力発
電プラントの蒸気タービン１２がトリップしたときはバ
ルブ２２を閉じ火力発電プラントへの液化天然ガス（Ｌ
ＮＧ）の供給を停止する。そして、バルブ２３を開き凝
縮器１７には液化天然ガスを供給し、二次媒体クローズ
ドサイクル発電プラントの運転を継続する。During operation, the superconducting generator 11 is supplied with a cooling medium, such as liquid He, from the cooling device 14. When the steam turbine 12 of the thermal power plant trips, the valve 22 is closed and the liquefied natural gas is supplied to the thermal power plant. Gas (L
NG) supply will be stopped. Then, the valve 23 is opened to supply liquefied natural gas to the condenser 17, and the operation of the secondary medium closed cycle power generation plant is continued.
このようにすることによって、蒸気タービン１２がトリ
ップしても、二次媒体クローズドサイクル発電プラント
の二次媒体タービン１３によって超電導発電機は回転を
保つので、そのロータ内の液面は均一に保たれる。した
がって、超電導発電機１１の回転が停止して冷却媒体が
不均一状態となって歪みを生ずることはない。By doing this, even if the steam turbine 12 trips, the superconducting generator will continue to rotate by the secondary medium turbine 13 of the secondary medium closed cycle power generation plant, so the liquid level in the rotor will remain uniform. It will be done. Therefore, the rotation of the superconducting generator 11 will not stop and the cooling medium will not become non-uniform and distorted.
一方、二次媒体タービンが停止した場合には、バルブ２
４を閉じて蒸発器１６に供給する二次媒体を停止する。On the other hand, when the secondary medium turbine stops, valve 2
4 to stop supplying the secondary medium to the evaporator 16.
この場合、火力発電プラントはそのままの運転を継続す
る。In this case, the thermal power plant will continue to operate as is.
［発明の効果コ
以上述べたように本発明によれば、二次媒体クローズド
サイクル発電プラントによる超電導発電機のターニング
が可能となる。また、複合発電プラントを構成している
ので、一方のタービンがトリップしても発電運転を継続
できる。[Effects of the Invention] As described above, according to the present invention, it is possible to turn a superconducting generator using a secondary medium closed cycle power generation plant. Moreover, since it is configured as a combined power generation plant, power generation operation can be continued even if one of the turbines trips.
すなわち、蒸気タービンおよび二次媒体タービンのいず
れかが停止した場合でも相互にバックアップが可能であ
り、超電導発電プラントとしての運用上も信頼性が非常
に高くなる。That is, even if either the steam turbine or the secondary medium turbine stops, mutual backup is possible, and the operational reliability of the superconducting power plant is extremely high.
さらに二次媒体クローズドサイクル発電プラントは二次
媒体としてフロンガスのような低沸点媒体を利用するの
で、海水で蒸発させることができ、非常に簡単な設備で
タービンを即動することができる。これは信頼性の高い
コンパクトなもので、これによって超電導発電機の高速
ターニングや超勤および発電を行うことができる。Furthermore, since secondary medium closed cycle power plants use a low boiling point medium such as chlorofluorocarbon gas as a secondary medium, it can be evaporated with seawater and the turbine can be operated immediately with very simple equipment. This is a highly reliable and compact device that allows superconducting generators to perform high-speed turning, overtime, and power generation.
第１図は本発明における複合発電プラントの一実施例を
示すブロック図である。
１１・・・超電導発電機、１２・・・蒸気タービン、１
３・・・二次媒体タービン、１４・・・冷却装置、１５
・・・二次媒体、１６・・・蒸発器、１７・・・凝縮器
、１８・・・ポンプ、１９・・・ボイラ、２０・・・復
水器、２１・・・蒸発器、２２．２３．２４・・・バル
ブ。FIG. 1 is a block diagram showing an embodiment of a combined power generation plant according to the present invention. 11...Superconducting generator, 12...Steam turbine, 1
3... Secondary medium turbine, 14... Cooling device, 15
... Secondary medium, 16 ... Evaporator, 17 ... Condenser, 18 ... Pump, 19 ... Boiler, 20 ... Condenser, 21 ... Evaporator, 22. 23.24...Valve.
Claims (1)
ビンと、二次媒体クローズドサイクル発電プラントの二
次媒体タービンと、超電導発電機とを直結し、前記火力
発電プラントに供給される液化天然ガスにより前記二次
媒体クローズドサイクル発電プラントの二次媒体を凝縮
するようにしたことを特徴とする複合発電プラント。A steam turbine of a thermal power plant that uses liquefied natural gas as fuel, a secondary medium turbine of a secondary medium closed cycle power plant, and a superconducting generator are directly connected, and the liquefied natural gas supplied to the thermal power plant generates the A combined power generation plant characterized in that the secondary medium of a secondary medium closed cycle power generation plant is condensed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6976890A JPH03271507A (en) | 1990-03-22 | 1990-03-22 | Compound generation plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6976890A JPH03271507A (en) | 1990-03-22 | 1990-03-22 | Compound generation plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03271507A true JPH03271507A (en) | 1991-12-03 |
Family
ID=13412308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6976890A Pending JPH03271507A (en) | 1990-03-22 | 1990-03-22 | Compound generation plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03271507A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005533972A (en) * | 2002-07-22 | 2005-11-10 | スティンガー、ダニエル・エイチ | Cascading closed-loop cycle power generation |
| JP2007127060A (en) * | 2005-11-04 | 2007-05-24 | Ebara Corp | Drive system |
| WO2011149916A1 (en) * | 2010-05-28 | 2011-12-01 | General Electric International, Inc | Generating energy from fluid expansion |
| US8400005B2 (en) | 2010-05-19 | 2013-03-19 | General Electric Company | Generating energy from fluid expansion |
| WO2015159056A3 (en) * | 2014-04-15 | 2015-12-10 | Norgren Limited | Vehicle heat recovery system |
-
1990
- 1990-03-22 JP JP6976890A patent/JPH03271507A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005533972A (en) * | 2002-07-22 | 2005-11-10 | スティンガー、ダニエル・エイチ | Cascading closed-loop cycle power generation |
| JP2007127060A (en) * | 2005-11-04 | 2007-05-24 | Ebara Corp | Drive system |
| US8400005B2 (en) | 2010-05-19 | 2013-03-19 | General Electric Company | Generating energy from fluid expansion |
| WO2011149916A1 (en) * | 2010-05-28 | 2011-12-01 | General Electric International, Inc | Generating energy from fluid expansion |
| WO2015159056A3 (en) * | 2014-04-15 | 2015-12-10 | Norgren Limited | Vehicle heat recovery system |
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