JPH03264709A - Regenerative power plant - Google Patents

Regenerative power plant

Info

Publication number
JPH03264709A
JPH03264709A JP6479890A JP6479890A JPH03264709A JP H03264709 A JPH03264709 A JP H03264709A JP 6479890 A JP6479890 A JP 6479890A JP 6479890 A JP6479890 A JP 6479890A JP H03264709 A JPH03264709 A JP H03264709A
Authority
JP
Japan
Prior art keywords
feed water
hot water
power plant
nuclear power
turbine
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
Application number
JP6479890A
Other languages
Japanese (ja)
Inventor
Masaatsu Fukuda
福田 征孜
Takuji Fujikawa
卓爾 藤川
Masabumi Wani
和仁 正文
Hisao Miyauchi
宮内 久雄
Seiji Nagashima
長嶋 清司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP6479890A priority Critical patent/JPH03264709A/en
Publication of JPH03264709A publication Critical patent/JPH03264709A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To effectively utilize extra electric power generated at night by heating feed water by use of steam extracted from a turbine in a nuclear power plant so as to obtain saturated hot water, and storing the saturated hot water in a tank so as to supply it to the power plant. CONSTITUTION:Regenerative feed water heaters 10-15 are additionally disposed in feed water heaters 4-9 of a nuclear power plant 1. Extraction steam pipes 16-19 branching from a turbine extraction steam line for supplying to the feed water heaters 4-7 are connected to the regenerative feed water heaters 10-13. An extraction steam pipe 20 of the feed water heater 9 and a blow pipe 21 from a nuclear reactor 2 are connected to the regenerative feed water heaters 14, 15, respectively. The regenerative feed water heaters 10-15 are connected in series to each other to constitute one system of feed water heating line. When extra electric power is generated in the nuclear power plant 1 at night, feed water is heated to be turned into saturated hot water, which is stored in a tank 22 connected to a hot water power plant 24.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、原子力発電プラントによる夜間の余剰電力を
有効に活用するために使用される蓄熱発電プラントに関
する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a thermal storage power generation plant used to effectively utilize nighttime surplus power generated by a nuclear power generation plant.

従来の技術 近年、原子力発電技術の進展により、総発電容量に占め
る原子力発電容量の割合が大きくなってきている。この
原子力発電プラントは、原子炉の特性上負荷変化率を大
きくすることができないし、法令による定期検査では、
その時期が決められているとともに、定期検査時に燃料
棒を全て交換することが定められている。
BACKGROUND OF THE INVENTION In recent years, with the advancement of nuclear power generation technology, the proportion of nuclear power generation capacity in total power generation capacity has increased. This nuclear power plant cannot increase the rate of load change due to the characteristics of the reactor, and regular inspections required by law
The timing is determined, and it is also stipulated that all fuel rods must be replaced during periodic inspections.

従って、出力を低下させて燃料棒を余らせても燃料費の
節減にはならないこともあり、原子力発電プラントは昼
夜を問わず、定格出力で運転され、いわゆるベースロー
ド発電プラントとして運用されている。そして前述のよ
うに、総発電容量に占める原子力発電容量の割合が大き
くなってきていることもあり、原子力発電プラントによ
る発電量は夜間の電力需要を上回るようになってきてい
る。
Therefore, even if the output is reduced and fuel rods are left over, fuel costs may not be reduced, and nuclear power plants are operated at their rated output day and night, operating as so-called base-load power plants. . As mentioned above, the proportion of nuclear power generation capacity in total power generation capacity is increasing, and the amount of power generated by nuclear power plants is beginning to exceed the demand for electricity at night.

そのため、原子力発電プラントによる夜間の余剰電力を
用い、揚水式水力発電所のポンプ水車を駆動し、発電用
の水を汲上げて夜間にエネルギを蓄積しておき、昼間の
ピークロードに対応させて、夜間に汲上げておいた水を
使い、揚水式水力発電所の水車をまわして発電すること
が行われている。
Therefore, surplus electricity from nuclear power plants at night is used to drive pump turbines at pumped storage hydroelectric power plants to pump water for power generation and store energy at night to meet daytime peak loads. The water pumped up at night is used to run the water turbines of pumped storage hydroelectric power plants to generate electricity.

発明が解決しようとする課題 ところで、上述のような揚水式水力発電所の建設につい
ては、立地条件の成立が難しく、建設費もかさむため容
易に実現できるものではなかった。
Problems to be Solved by the Invention Incidentally, the construction of a pumped storage hydroelectric power plant as described above has not been easily realized because the location conditions are difficult to satisfy and the construction cost is high.

また、ピークロード対応用の毎日起動停止火力やサイク
リック火力は、効率、経済性と負荷変動に対する耐力と
の両立が難しいという問題もあった。
Additionally, daily start-stop thermal power and cyclic thermal power for handling peak loads have a problem in that it is difficult to achieve both efficiency, economy, and resistance to load fluctuations.

本発明はこのような問題を解決することを目的としてな
されたものである。
The present invention has been made with the aim of solving such problems.

課題を解決するための手段 この発明は、原子力発電プラントと、この原子力発電プ
ラントのタービンからの抽気によって給水を加熱して飽
和熱水を得る蓄熱用給水加熱器と、この蓄熱用給水加熱
器で得られた飽和熱水を蓄える熱水貯蔵タンクと、この
熱水貯蔵タンクに蓄えられている飽和熱水を使用して発
電する熱水発電プラントとから成るものである。
Means for Solving the Problems The present invention relates to a nuclear power plant, a heat storage feed water heater for heating feed water to obtain saturated hot water using extracted air from a turbine of the nuclear power plant, and a heat storage feed water heater for heating the feed water using extraction air from a turbine of the nuclear power plant. It consists of a hot water storage tank that stores the obtained saturated hot water, and a hot water power generation plant that uses the saturated hot water stored in the hot water storage tank to generate electricity.

作用 上記の手段によれば、原子力発電プラントに別系列に設
けた蓄熱用給水加熱器によって、夜間に、原子力発電プ
ラントのタービンからの抽気によって給水を加熱して、
飽和熱水の形でエネルギを蓄積し、昼間のピークロード
時に、この飽和熱水を用いて熱水発電プラントで発電す
る。
According to the above-mentioned means, the feed water is heated at night by air extracted from the turbine of the nuclear power plant by a heat storage feed water heater installed in a separate line in the nuclear power plant.
Energy is stored in the form of saturated hot water, and this saturated hot water is used to generate electricity in a hydrothermal power plant during daytime peak loads.

実施例 以下本発明に係る蓄熱発電プラントの一実施例を、図面
を参照して詳細に説明する。
EXAMPLE Hereinafter, an example of a heat storage power generation plant according to the present invention will be described in detail with reference to the drawings.

図は本発明に係る蓄熱発電プラントの一実施例を示した
系統図であり、1は原子力発電プラント、2は原子炉、
3は原子力発電用タービン、4ないし9は給水加熱器で
ある。なお、本発明では原子力発電プラントに付加され
る他の発電プラント部分などが重要なので、原子力発電
プラント1については、本発明の説明に必要な部分のみ
の説明に止めるものとする。
The figure is a system diagram showing one embodiment of a thermal storage power generation plant according to the present invention, in which 1 is a nuclear power plant, 2 is a nuclear reactor,
3 is a nuclear power generation turbine, and 4 to 9 are feed water heaters. Note that, since other power plant parts added to the nuclear power plant are important in the present invention, only the parts of the nuclear power plant 1 that are necessary for explaining the present invention will be explained.

本発明の蓄熱発電プラントは、原子力発電プラント1の
給水加熱器4ないし9に、もう1系列の給水加熱ライン
を追設する。すなわち、新たな給水加熱器として蓄熱用
給水加熱器lO〜15を設け、給水加熱器10〜13に
は、原子力発電プラント1の給水加熱器4〜7に供給さ
れるタービン抽気ラインから分岐された抽気管16〜1
9を連結し、給水加熱器14には、給水加熱器9に供給
されるタービン抽気ラインから分岐された抽気管20を
連結し、給水加熱器15には、原子炉2からのブロー管
21を連結する。
In the thermal storage power generation plant of the present invention, another feedwater heating line is additionally installed in the feedwater heaters 4 to 9 of the nuclear power plant 1. That is, the heat storage feedwater heaters 10 to 15 are provided as new feedwater heaters, and the feedwater heaters 10 to 13 are connected to a turbine extraction line that is branched from the turbine extraction line that is supplied to the feedwater heaters 4 to 7 of the nuclear power plant 1. Bleed pipe 16-1
9 is connected to the feedwater heater 14, an air bleed pipe 20 branched from the turbine bleed air line supplied to the feed water heater 9 is connected to the feed water heater 14, and a blow pipe 21 from the reactor 2 is connected to the feed water heater 15. Link.

この新たな蓄熱用給水加熱器10〜15は、直列に接続
されて1系列の給水加熱ラインを形成しており、夜間、
原子力発電プラント1に余剰電力を生じたときに、ター
ビンからの抽気によって給水を加熱して飽和熱水とし、
このラインに連結されている熱水貯蔵タンク22に飽和
熱水を貯蔵させるものである。従って、原子炉2の負荷
を下げることなく、原子力発電用タービン3の出力を低
下させることができ、余剰電力に相当する分のエネルギ
は飽和熱水として蓄積することになる。
These new heat storage feed water heaters 10 to 15 are connected in series to form one series of feed water heating lines, and at night,
When surplus power is generated in the nuclear power plant 1, the feed water is heated by extraction air from the turbine to become saturated hot water,
Saturated hot water is stored in a hot water storage tank 22 connected to this line. Therefore, the output of the nuclear power generation turbine 3 can be reduced without reducing the load on the nuclear reactor 2, and the energy equivalent to the surplus electric power will be accumulated as saturated hot water.

熱水貯蔵タンク22は主熱水管23を経て熱水発電プラ
ント24に連結されている。熱水発電プラント24は、
熱水タービン25、気水分離器26、多段フラッシャ2
7、フラッシュ蒸気タービン28、復水器29および発
電機30などから構成されている。
The hot water storage tank 22 is connected to a hot water power generation plant 24 via a main hot water pipe 23. The hydrothermal power generation plant 24 is
Hot water turbine 25, steam separator 26, multistage flasher 2
7, a flash steam turbine 28, a condenser 29, a generator 30, etc.

すなわち、主熱水管23から主熱水止弁31、熱水加減
弁32および主熱水入口管33を経て、熱水貯蔵タンク
22に貯蔵されている飽和熱水を熱水タービン25へ供
給してこれを駆動する。ここで仕事を終えた飽和熱水は
、熱水タービン排気管34を経て気水分離器26に入り
、気水分離された後、フラッシュ蒸気はフラッシュ蒸気
止弁35、インタセプト弁36およびフラッシュ蒸気タ
ービン入口蒸気管37を経てフラッシュ蒸気タービン2
8に入る。
That is, the saturated hot water stored in the hot water storage tank 22 is supplied from the main hot water pipe 23 to the hot water turbine 25 via the main hot water stop valve 31, the hot water adjustment valve 32, and the main hot water inlet pipe 33. drive this. The saturated hot water that has finished its work here passes through the hot water turbine exhaust pipe 34 and enters the steam/water separator 26. After steam and water separation, the flash steam passes through the flash steam stop valve 35, the intercept valve 36, and the flash steam turbine. Flash steam turbine 2 via inlet steam pipe 37
Enter 8.

一方、気水分離器26は気水分離器排熱水管38を介し
て多段フラッシャ27に連結され、多段フラッシャ27
はフラッシュ蒸気入口管39を介してフラッシュ蒸気タ
ービン28に連結されている。なお、フラッシュ蒸気入
口管39にもフラッシュ蒸気止弁35が設けられている
On the other hand, the steam/water separator 26 is connected to the multistage flasher 27 via the steam/water separator waste hot water pipe 38.
is connected to the flash steam turbine 28 via a flash steam inlet pipe 39 . Note that the flash steam inlet pipe 39 is also provided with a flash steam stop valve 35 .

熱水タービン25およびフラッシュ蒸気タービン28の
回転軸は発電機30に連結されており、これらタービン
を駆動することによって発電機3oから電力を得て、昼
間のピークロードに対応する。
The rotating shafts of the hot water turbine 25 and the flash steam turbine 28 are connected to a generator 30, and by driving these turbines, electric power is obtained from the generator 3o to cope with the daytime peak load.

なお、フラッシュ蒸気タービン28の出口側には復水器
29が設けられており、仕事を終えたフランシュ蒸気が
導入され冷却されて復水となる。そして復水は、復水ポ
ンプ40により復水ポンプ出口管41を経て復水貯蔵タ
ンク42に貯蔵される。また、多段フラッシャ27の出
口にはドレンポンプ43が設けられており、多段フラッ
シャ27からのドレンが、ドレンポンプ43により、ド
レンポンプ出口管44および復水ポンプ出口管41を経
て復水貯蔵タンク42に貯蔵される。
A condenser 29 is provided on the outlet side of the flash steam turbine 28, into which Franche steam that has finished its work is introduced and cooled to become condensate. The condensate is then stored in a condensate storage tank 42 by a condensate pump 40 via a condensate pump outlet pipe 41. Further, a drain pump 43 is provided at the outlet of the multistage flasher 27, and the drain from the multistage flasher 27 is passed through the drain pump outlet pipe 44 and the condensate pump outlet pipe 41 to the condensate storage tank 42. stored in

復水貯蔵タンク42の出口には給水ポンプ45が設けら
れており、復水貯蔵タンク42に貯蔵されている水が、
新たに設けた蓄熱用給水加熱器10〜15へ供給される
ように閉ループが構成されている。
A water supply pump 45 is provided at the outlet of the condensate storage tank 42, and the water stored in the condensate storage tank 42 is
A closed loop is configured so that the water is supplied to the newly installed heat storage water supply heaters 10 to 15.

なお、本発明は上述の一実施例に限定されることなく、
要旨を逸脱しない範囲内で種々変形して実施できること
は言うまでもない。例えば、蓄熱用給水加熱器10〜1
5の数や多段フラッシャ27の段数は、プラントの状況
に応じた個数、段数であってよい。また、蓄熱用給水加
熱器10〜15を出た熱水を、発電以外の熱水利用設備
に供給するようにしてもよい。
Note that the present invention is not limited to the above-mentioned example,
It goes without saying that various modifications can be made without departing from the scope of the invention. For example, heat storage water supply heaters 10 to 1
The number of flashers 5 and the number of stages of the multistage flasher 27 may be determined depending on the situation of the plant. Moreover, the hot water that has exited the heat storage water supply heaters 10 to 15 may be supplied to hot water utilization equipment other than power generation.

発明の効果 以上詳述したように本発明によれば、原子炉の負荷を低
下させることなく原子力タービンの出力を低下させるこ
とができるので、夜間の余剰電力を発生させることがな
いし、余剰電力に相当する分のエネルギを有効に蓄積し
て、昼間のピークロード時に活用することのできる蓄熱
発電プラントが提供される。また、本発明によれば、原
子力発電プラントという本来柔軟性の低いプラントに柔
軟性を与えることができるという点でも、大きな効果を
奏するものである。
Effects of the Invention As detailed above, according to the present invention, it is possible to reduce the output of the nuclear turbine without reducing the load on the reactor, so there is no need to generate surplus power at night, and the surplus power is A heat storage power generation plant is provided that can effectively store a corresponding amount of energy and utilize it during daytime peak loads. Further, according to the present invention, a great effect can be achieved in that flexibility can be imparted to a nuclear power plant, which is inherently inflexible.

【図面の簡単な説明】[Brief explanation of drawings]

図は本発明に係る蓄熱発電プラントの一実施例を示した
系統図である。 1・・原子力発電プラント、3・・原子力発電用タービ
ン、10−15・・蓄熱用給水加熱器、22・・熱水貯
蔵タンク、24・・熱水発電プラント。
The figure is a system diagram showing an embodiment of a thermal storage power generation plant according to the present invention. 1. Nuclear power generation plant, 3. Nuclear power generation turbine, 10-15. Heat storage feed water heater, 22. Hot water storage tank, 24. Hot water power generation plant.

Claims (1)

【特許請求の範囲】[Claims] 原子力発電プラントと、この原子力発電プラントのター
ビンからの抽気によって給水を加熱して飽和熱水を得る
蓄熱用給水加熱器と、この蓄熱用給水加熱器で得られた
飽和熱水を蓄える熱水貯蔵タンクと、この熱水貯蔵タン
クに蓄えられている飽和熱水を使用して発電する熱水発
電プラントとを備えた蓄熱発電プラント。
A nuclear power plant, a heat storage feed water heater that heats feed water to obtain saturated hot water using the extracted air from the turbine of the nuclear power plant, and a hot water storage that stores the saturated hot water obtained by this heat storage feed water heater. A thermal storage power generation plant that includes a tank and a hot water power generation plant that generates electricity using saturated hot water stored in this hot water storage tank.
JP6479890A 1990-03-15 1990-03-15 Regenerative power plant Pending JPH03264709A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6479890A JPH03264709A (en) 1990-03-15 1990-03-15 Regenerative power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6479890A JPH03264709A (en) 1990-03-15 1990-03-15 Regenerative power plant

Publications (1)

Publication Number Publication Date
JPH03264709A true JPH03264709A (en) 1991-11-26

Family

ID=13268622

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6479890A Pending JPH03264709A (en) 1990-03-15 1990-03-15 Regenerative power plant

Country Status (1)

Country Link
JP (1) JPH03264709A (en)

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