JP3483277B2 - Exhaust heat recovery equipment in turbine equipment - Google Patents
Exhaust heat recovery equipment in turbine equipmentInfo
- Publication number
- JP3483277B2 JP3483277B2 JP26530093A JP26530093A JP3483277B2 JP 3483277 B2 JP3483277 B2 JP 3483277B2 JP 26530093 A JP26530093 A JP 26530093A JP 26530093 A JP26530093 A JP 26530093A JP 3483277 B2 JP3483277 B2 JP 3483277B2
- Authority
- JP
- Japan
- Prior art keywords
- steam
- turbine
- heat recovery
- equipment
- condenser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、タービン設備における
排熱回収装置に関するものである。
【０００２】
【従来の技術】通常、蒸気タービン設備において、蒸気
タービンから排出される蒸気は、水冷式の復水器に導か
れ、そしてここで復水された水はボイラに戻されてい
る。
【０００３】また、このような蒸気タービン設備におい
て、復水器における冷却媒体として、海水が使用される
とともにこの冷却系統は開回路とされ、さらに海水が復
水器で奪った蒸気の潜熱は、温度レベルが低いため、そ
のまま熱回収が行われずに捨てられていた。
【０００４】
【発明が解決しようとする課題】上記従来の蒸気タービ
ン設備によると、タービンから排出される蒸気は、復水
器で海水により冷却されて復水されるが、この時、海水
に奪われた熱の回収は行われておらず、したがって不経
済であるという問題があり、また冷却媒体として海水が
使用されているため、配管系統が腐食するという問題も
あった。
【０００５】そこで、本発明は上記問題を解消し得るタ
ービン設備における排熱回収装置を提供することを目的
とする。
【０００６】
【課題を解決するための手段】上記課題を解決するた
め、本発明のタービン設備における排熱回収装置は、蒸
気発生用のボイラと、このボイラから蒸気が導入される
蒸気タービンと、この蒸気タービンから排出される蒸気
を冷却する復水器とを有するタービン設備における排熱
回収装置であって、上記復水器における冷却媒体の配管
経路を閉回路になすとともに冷却媒体として水を使用
し、かつこの配管経路の途中に、熱電加熱装置を設けた
ものである。
【０００７】
【作用】上記の構成によると、復水器への冷却媒体の配
管経路の途中に熱電加熱装置を設けたので、冷却媒体か
ら熱を電気に変換して取り出すことができ、したがって
例えば冷却媒体をそのまま外部に排出している場合に比
べて、設備全体としての熱効率が向上する。
【０００８】また、冷却媒体として水を使用したので、
海水を使用する場合に比べて、配管系統の腐食および汚
れなどの心配が殆ど無い。
【０００９】
【実施例】以下、本発明の一実施例を図１に基づき説明
する。図１において、１は高温蒸気を発生するボイラ２
と、このボイラ２から発生した高温蒸気が供給されると
ともに例えば発電機３を駆動する蒸気タービン４と、こ
の蒸気タービン４から排出される低温の蒸気を冷却して
復水させる復水器５と、途中に復水ポンプ６、給水タン
ク７および給水ポンプ８が介装された復水戻り配管９
と、途中に冷却水ポンプ１０が介装されて上記復水器５
に冷却媒体である冷却水（真水）を循環供給する冷却水
循環配管１１とを具備するタービン設備で、さらにこの
タービン設備１には、復水器５で排気蒸気から奪った熱
を冷却水から回収するための排熱回収装置１２が具備さ
れている。
【００１０】この排熱回収装置１２は、一端部がボイラ
２の下部ドラム２ａに接続されるとともに他端部が上部
ドラム２ｂに接続され、かつ途中にボイラ水ポンプ２２
が介装されたボイラ水循環配管２１と、このボイラ水循
環配管２１および冷却水循環配管１１の途中に介装され
た熱電加熱装置２３とから構成されている。
【００１１】また、この熱電加熱装置２３は、例えばペ
ルチェ効果を利用した熱電加熱素子と、この熱電加熱素
子に電流を供給する電源とから構成されたものである。
なお、上記熱電加熱装置を構成する熱電加熱素子は、一
対の異種の金属、例えばｐ型半導体およびｎ型半導体の
一端側を接続させたもので、この一端側は冷却水配管１
１の外周面に接触するように固定されるとともに、他端
側は温度が高い状態下に置かれる。また、上記半導体材
料としては、例えばビスマステルル系のものが使用され
る。
【００１２】したがって、上記タービン設備１におい
て、蒸気タービン４から排出された排気蒸気は復水器５
に入り、ここで冷却水循環配管１１内を流れる冷却水に
より、冷却されて復水される。
【００１３】一方、復水器５内で排気蒸気から熱を奪っ
て比較的高温となった冷却水は、冷却水循環配管１１内
を移動するが、熱電加熱装置２３の箇所でヒートアップ
されることになる。すなわち、熱電加熱素子の一端側か
ら吸熱し、その他端側の高温ボイラ水側に放熱させるも
のである。なお、冷却水循環配管１１からは、当然、自
然に放熱されている。
【００１４】このように、蒸気タービン４から排出され
る蒸気の持つ熱エネルギーを外部電力によりヒートアッ
プして、ボイラ水側に回収したことになり、設備全体と
しての熱効率が向上する。
【００１５】また、上記構成においては、冷却媒体とし
て水が使用されているので、例えば海水を使用する場合
に比べて、配管系統の腐食および汚れの心配が殆ど無く
なる。
【００１６】ところで、上記実施例においては、熱電加
熱装置２３により、ボイラ水を加熱するようにしたが、
例えば他の雑用加熱に用いても良く、また復水器５から
ボイラ２側に戻される復水自身を加熱するようにしても
良い。
【００１７】
【発明の効果】以上のように本発明の構成によると、復
水器への冷却媒体の配管経路の途中に熱電加熱装置を設
けたので、冷却媒体から熱をヒートアップして回収する
ことができ、したがって従来のように、熱回収を行って
いない場合に比べて、設備全体としての熱効率を向上さ
せることができ、非常に経済的である。
【００１８】また、冷却媒体として水を使用しているの
で、海水を使用する場合に比べて、配管系統の腐食およ
び汚れなどの心配が殆ど無くなる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust heat recovery device for turbine equipment. [0002] Generally, in a steam turbine facility, steam discharged from a steam turbine is led to a water-cooled condenser, and the condensed water is returned to a boiler. Further, in such a steam turbine facility, seawater is used as a cooling medium in the condenser, and this cooling system is provided with an open circuit, and the latent heat of the steam which the seawater takes in the condenser is: Because of the low temperature level, it was discarded without heat recovery. [0004] According to the above-mentioned conventional steam turbine equipment, steam discharged from the turbine is cooled by seawater in a condenser and condensed. There has been a problem that the recovered heat has not been recovered and therefore is uneconomical, and there is also a problem that the piping system is corroded because seawater is used as a cooling medium. [0005] Accordingly, an object of the present invention is to provide an exhaust heat recovery device in turbine equipment that can solve the above-mentioned problems. [0006] In order to solve the above-mentioned problems, an exhaust heat recovery apparatus in a turbine facility according to the present invention includes a boiler for generating steam, a steam turbine from which steam is introduced from the boiler, A waste heat recovery device in a turbine facility having a condenser for cooling steam discharged from the steam turbine, wherein a closed circuit is provided for a piping path of a cooling medium in the condenser and water is used as a cooling medium. In addition, a thermoelectric heating device is provided in the middle of the piping route. According to the above construction, the thermoelectric heating device is provided in the middle of the piping path of the cooling medium to the condenser, so that heat can be converted from the cooling medium into electricity and taken out. The thermal efficiency of the entire facility is improved as compared with the case where the cooling medium is directly discharged to the outside. Further, since water is used as a cooling medium,
Compared to the case of using seawater, there is almost no concern about corrosion and dirt of the piping system. An embodiment of the present invention will be described below with reference to FIG. In FIG. 1, reference numeral 1 denotes a boiler 2 for generating high-temperature steam.
A steam turbine 4 for supplying high-temperature steam generated from the boiler 2 and driving, for example, a generator 3; and a condenser 5 for cooling and condensing low-temperature steam discharged from the steam turbine 4. A condensate return pipe 9 in which a condensate pump 6, a water supply tank 7 and a water supply pump 8 are interposed
The cooling water pump 10 is interposed in the middle and the condenser 5
And a cooling water circulation pipe 11 for circulating cooling water (fresh water) as a cooling medium. The turbine equipment 1 further collects heat taken from exhaust steam by the condenser 5 from the cooling water. An exhaust heat recovery device 12 for performing the operation is provided. The exhaust heat recovery device 12 has one end connected to the lower drum 2a of the boiler 2 and the other end connected to the upper drum 2b.
And a thermoelectric heating device 23 provided in the middle of the boiler water circulation pipe 21 and the cooling water circulation pipe 11. The thermoelectric heating device 23 is composed of, for example, a thermoelectric heating element utilizing the Peltier effect and a power supply for supplying a current to the thermoelectric heating element.
The thermoelectric heating element constituting the thermoelectric heating device is formed by connecting one end of a pair of dissimilar metals, for example, a p-type semiconductor and an n-type semiconductor.
1 is fixed so as to be in contact with the outer peripheral surface, and the other end is placed in a state where the temperature is high. As the semiconductor material, for example, a bismuth telluride-based material is used. Therefore, in the turbine equipment 1, the exhaust steam discharged from the steam turbine 4 is supplied to the condenser 5
The cooling water is cooled and returned by the cooling water flowing through the cooling water circulation pipe 11. On the other hand, the cooling water, which has taken heat from the exhaust steam in the condenser 5 and has become relatively high temperature, moves in the cooling water circulation pipe 11, but is heated up at the thermoelectric heating device 23. become. That is, heat is absorbed from one end of the thermoelectric heating element and is released to the high-temperature boiler water at the other end. In addition, naturally, the cooling water circulation pipe 11
The heat is naturally dissipated. As described above, the heat energy of the steam discharged from the steam turbine 4 is heated up by the external electric power and recovered to the boiler water side, so that the thermal efficiency of the entire equipment is improved. Further, in the above configuration, since water is used as the cooling medium, there is almost no fear of corrosion and contamination of the piping system as compared with, for example, the case of using seawater. In the above embodiment, the boiler water is heated by the thermoelectric heating device 23.
For example, the condensate may be used for other chores, or the condensate itself returned from the condenser 5 to the boiler 2 may be heated. As described above, according to the structure of the present invention, the thermoelectric heating device is provided in the middle of the piping path of the cooling medium to the condenser, so that heat is recovered from the cooling medium by heating up the heat. Therefore, as compared with the conventional case where heat recovery is not performed, the thermal efficiency of the entire equipment can be improved, which is very economical. Further, since water is used as the cooling medium, there is almost no fear of corrosion and dirt on the piping system as compared with the case where seawater is used.
【図面の簡単な説明】
【図１】本発明の一実施例におけるタービン設備の概略
構成を示すブロック図である。
【符号の説明】
１ タービン設備
２ ボイラ
４ 蒸気タービン
５ 復水器
９ 復水戻り配管
１１ 冷却水循環配管
１２ 排熱回収装置
２１ ボイラ水循環配管
２３ 熱電加熱装置BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a schematic configuration of a turbine facility according to an embodiment of the present invention. [Description of Signs] 1 Turbine equipment 2 Boiler 4 Steam turbine 5 Condenser 9 Condensate return pipe 11 Cooling water circulation pipe 12 Waste heat recovery device 21 Boiler water circulation pipe 23 Thermoelectric heating device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 阿部 勝敏 東京都港区虎ノ門３丁目８番21号 日正 汽船株式会社内 (72)発明者 安原 国興 東京都港区虎ノ門３丁目８番21号 日正 汽船株式会社内 (72)発明者 吉田 茂 東京都港区虎ノ門３丁目８番21号 日正 汽船株式会社内 (72)発明者 沖原 正章 大阪府大阪市淀川区野中北１丁目３番38 号 ボルカノ株式会社内 (72)発明者 栗本 隆志 大阪府大阪市淀川区野中北１丁目３番38 号 ボルカノ株式会社内 (72)発明者 岡井 一博 大阪府大阪市淀川区野中北１丁目３番38 号 ボルカノ株式会社内 (72)発明者 熊谷 猛 大阪府大阪市此花区西九条５丁目３番28 号 日立造船株式会社内 (72)発明者 猪野 義隆 大阪府大阪市此花区西九条５丁目３番28 号 日立造船株式会社内 (72)発明者 林 雅俊 大阪府大阪市此花区西九条５丁目３番28 号 日立造船株式会社内 (56)参考文献 特開 平２−264101（ＪＰ，Ａ) 特開 昭57−91385（ＪＰ，Ａ) 特開 昭62−267508（ＪＰ，Ａ) 特開 平５−222905（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F01K 9/00 F01K 11/02 F01K 23/02 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Katsutoshi Abe 3-8-21 Toranomon, Minato-ku, Tokyo Nissho Kisen Kaisha Co., Ltd. (72) Inventor Kuniaki Yasuhara 3-8-21 Toranomon, Minato-ku, Tokyo Nissho Kisen Kaisha Co., Ltd. (72) Inventor Shigeru Yoshida 3-8-21 Toranomon, Minato-ku, Tokyo Nissho Kisen Co., Ltd. (72) Inventor Masaaki Okihara 1-3-38 Nonakakita, Yodogawa-ku, Osaka-shi, Osaka No. Volcano Co., Ltd. (72) Inventor Takashi Kurimoto 1-338 Nonakakita, Yodogawa-ku, Osaka, Osaka No. 1-338 Inventor Kazuhiro Okai, No. 1-3 Nonakakita, Yodogawa-ku, Osaka, Osaka No. 38 Inside Volcano Co., Ltd. (72) Inventor Takeshi Kumagai 5-3-28 Nishikujo, Konohana-ku, Osaka-shi, Osaka Prefecture Shipbuilding Co., Ltd. (72) Inventor Yoshitaka Ino, Konohana-ku, Osaka-shi, Osaka Article 5-3-28 Hitachi Zosen Corporation (72) Inventor Masatoshi Hayashi Osaka 3-city Konohana-ku Nishikujo 5-3-28 Hitachi Zosen Corporation (56) References JP-A-2-264101 ( JP, A) JP-A-57-91385 (JP, A) JP-A-62-267508 (JP, A) JP-A-5-222905 (JP, A) (58) Fields investigated (Int. Cl. 7 , (DB name) F01K 9/00 F01K 11/02 F01K 23/02
Claims (1)
気が導入される蒸気タービンと、この蒸気タービンから
排出される蒸気を冷却する復水器とを有するタービン設
備における排熱回収装置であって、上記復水器における
冷却媒体の配管経路を閉回路になすとともに冷却媒体と
して水を使用し、かつこの配管経路の途中に、熱電加熱
装置を設けたことを特徴とするタービン設備における排
熱回収装置。(57) [Claim 1] A boiler for generating steam, a steam turbine into which steam is introduced from the boiler, and a condenser for cooling steam discharged from the steam turbine. An exhaust heat recovery device in a turbine facility, wherein a pipe route of a cooling medium in the condenser forms a closed circuit, water is used as a cooling medium, and a thermoelectric heating device is provided in the middle of the piping route. An exhaust heat recovery device for a turbine facility, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26530093A JP3483277B2 (en) | 1993-10-25 | 1993-10-25 | Exhaust heat recovery equipment in turbine equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26530093A JP3483277B2 (en) | 1993-10-25 | 1993-10-25 | Exhaust heat recovery equipment in turbine equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07119412A JPH07119412A (en) | 1995-05-09 |
| JP3483277B2 true JP3483277B2 (en) | 2004-01-06 |
Family
ID=17415289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26530093A Expired - Fee Related JP3483277B2 (en) | 1993-10-25 | 1993-10-25 | Exhaust heat recovery equipment in turbine equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3483277B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3059124B2 (en) * | 1997-07-22 | 2000-07-04 | 株式会社東芝 | Hydrogen combustion turbine plant |
| JP5323118B2 (en) * | 2011-04-14 | 2013-10-23 | 中国電力株式会社 | Power generation unit |
| CN103471158A (en) * | 2013-09-16 | 2013-12-25 | 高成福 | Energy-saving heating device by using steam |
| CN104654816B (en) * | 2015-02-10 | 2016-08-24 | 南京凯盛开能环保能源有限公司 | Steam turbine directly drives cement kiln bootstrap system and the method for rotating machinery |
| CN105423772B (en) * | 2015-11-18 | 2017-05-17 | 东北电力大学 | Power station air cooling system adopting combined refrigeration with shaft seal steam leakage of steam turbine and continuous blow-down waste heat of boiler as well as method for predicting heat-transfer coefficient of air-cooling condenser |
-
1993
- 1993-10-25 JP JP26530093A patent/JP3483277B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07119412A (en) | 1995-05-09 |
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