JPH03253707A - Combined cycle electric power generating plant - Google Patents
Combined cycle electric power generating plantInfo
- Publication number
- JPH03253707A JPH03253707A JP5328790A JP5328790A JPH03253707A JP H03253707 A JPH03253707 A JP H03253707A JP 5328790 A JP5328790 A JP 5328790A JP 5328790 A JP5328790 A JP 5328790A JP H03253707 A JPH03253707 A JP H03253707A
- Authority
- JP
- Japan
- Prior art keywords
- steam
- water
- drum
- economizer
- deaerator
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 238000011084 recovery Methods 0.000 claims description 13
- 238000010248 power generation Methods 0.000 claims description 9
- 239000008400 supply water Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
- 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、ガスタービンと蒸気タービンとを組合せて発
電を行うコンバインドサイクル発電プラントに関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a combined cycle power plant that generates power by combining a gas turbine and a steam turbine.
（従来の技術）
近年、発電プラントにおいては、その熱効率を向上させ
るため、ガスタービンと蒸気タービンとを組合せたコン
バインドサイクル発電プラントが開発され実用化されて
いる。(Prior Art) In recent years, in order to improve the thermal efficiency of power plants, combined cycle power plants that combine a gas turbine and a steam turbine have been developed and put into practical use.
第２図は、このようなコンバインドサイクル発電プラン
トの排熱回収ボイラ系統の構成を示すもので、図におい
て符号］は脱気器を示している。FIG. 2 shows the configuration of the exhaust heat recovery boiler system of such a combined cycle power plant, and in the figure, the symbol ] indicates a deaerator.
この脱気器１には、復水ポンプ２および復水調整弁３を
介挿された復水配管４と、脱気用蒸気調節弁５を介挿さ
れた脱気用蒸気配管６が接続されている。This deaerator 1 is connected to a condensate pipe 4 in which a condensate pump 2 and a condensate regulating valve 3 are inserted, and a deaeration steam pipe 6 in which a deaeration steam regulation valve 5 is inserted. ing.
また、脱気器１の出口側には、脱気器］の水を節炭器７
を介して蒸気ドラム８に供給する給水配管９が接続され
ており、この給水配管９には、給水ポンプ１０および給
水調整弁１１か介挿されている。さらに、蒸気ドラム８
には、降水管１２が接続されており、降水管１２によっ
て蒸気ドラム８内の水を蒸発器１３へ導入し、蒸発器１
３で発生させた蒸気を、ドラム蒸気止弁１４を介挿され
た蒸気配管１５によって図示しない蒸気タービンへ送る
よう構成されている。In addition, on the outlet side of the deaerator 1, the water from the deaerator is supplied to the energy saver 7.
A water supply pipe 9 is connected to the steam drum 8 via the steam drum 8, and a water supply pump 10 and a water supply regulating valve 11 are inserted into the water supply pipe 9. Furthermore, steam drum 8
A downcomer pipe 12 is connected to the downcomer pipe 12, which introduces the water in the steam drum 8 to the evaporator 13.
The steam generated in step 3 is sent to a steam turbine (not shown) through a steam pipe 15 in which a drum steam stop valve 14 is inserted.
上記構成のコンバインドサイクル発電プラントにおいて
、プラント運転中は、復水ポンプ２によって供給された
水は、脱気器１に流入し、ここで脱気される。この後、
脱気された水は、給水ポンプ１０により昇圧されて、節
炭器７に流入し、ここで加熱された後、蒸気ドラム８に
流入する。In the combined cycle power plant having the above configuration, during plant operation, water supplied by the condensate pump 2 flows into the deaerator 1 and is degassed there. After this,
The degassed water is pressurized by the water pump 10, flows into the economizer 7, is heated there, and then flows into the steam drum 8.
そして、蒸気ドラム８内の水は、降水管１２によって蒸
発器１３へ導入され、加熱されて蒸気を発生する。The water in the steam drum 8 is then introduced into the evaporator 13 by the downcomer pipe 12, where it is heated and generates steam.
このような系統において、排熱回収ボイラを停止する際
、次回の起動まで排熱回収ボイラ内の熱を外に逃がさな
いよう排熱回収ボイラ系外へ連なる系統の弁を閉にして
、排熱回収ボイラ配管内を運転時と同様、高温、高圧に
保持する停止方法（ホットバンキング）がある。In such a system, when the waste heat recovery boiler is stopped, the valves in the system connected to the outside of the waste heat recovery boiler system are closed to prevent the heat inside the waste heat recovery boiler from escaping until the next startup. There is a shutdown method (hot banking) that maintains the inside of the recovery boiler piping at high temperature and pressure, similar to when it is in operation.
（発明が解決しようとする課題）
しかしながら、上記説明の従来のコンバインドサイクル
発電プラントでは、排熱回収ボイラ停止後のホットバン
キングを行った場合、排熱回収ボイラ内部の蓄熱により
、節炭器７の伝熱配管内で気胞が発生し、管内水の流れ
か停止しているため、気胞が配管内に滞留する。このた
め、次回の排熱回収ボイラ起動時、給水ポンプ１０を起
動すると、節炭器７内で気胞によりハンマリングが生じ
、円滑、迅速な起動ができないといった不具合が生じる
。(Problems to be Solved by the Invention) However, in the conventional combined cycle power plant described above, when hot banking is performed after the exhaust heat recovery boiler is stopped, the energy saving device 7 is Air bubbles occur in the heat transfer pipes, and the flow of water in the pipes has stopped, so the air bubbles remain inside the pipes. For this reason, when the water supply pump 10 is started the next time the exhaust heat recovery boiler is started, hammering occurs due to air cells within the energy saver 7, causing a problem that smooth and quick start-up cannot be performed.
本発明は、かかる従来の事情に対処してなされたもので
、ホットバンキング時に節炭器内での蒸気発生を防止す
ることができ、円滑、迅速な起動を行うことのできるコ
ンバインドサイクル発電プラントを提供しようとするも
のである。The present invention has been made in response to such conventional circumstances, and provides a combined cycle power generation plant that can prevent steam generation in the economizer during hot banking and can start up smoothly and quickly. This is what we are trying to provide.
［発明の構成］
（課題を解決するための手段）
すなわち、本発明は、ガスタービンを回転させた後の排
気ガスから、排熱回収ボイラにより蒸気を発生させ、こ
の蒸気により蒸気タービンを回転させるコンバインドサ
イクル発電プラントであって、前記排熱回収ボイラの蒸
気ドラムに、脱気器から節炭器を介して給水するよう構
成されたコンバインドサイクル発電プラントにおいて、
前記排熱間取ボイラの蒸気ドラムの降下管下端部と前記
脱気器との間に、ポンプを備えた水循環配管を設け、ホ
ットバンキング時に前記蒸気ドラムと前記脱気器および
前記節炭器との間に存在する水を循環可能に構成したこ
とを特徴とする。[Structure of the Invention] (Means for Solving the Problem) That is, the present invention generates steam from exhaust gas after rotating a gas turbine using an exhaust heat recovery boiler, and rotates the steam turbine with this steam. In a combined cycle power generation plant, the combined cycle power generation plant is configured to supply water from a deaerator to a steam drum of the exhaust heat recovery boiler via a economizer,
A water circulation pipe equipped with a pump is provided between the lower end of the downcomer pipe of the steam drum of the waste heat floor plan boiler and the deaerator, and the water circulation piping is provided with a pump, and the steam drum, the deaerator, and the economizer are connected to each other during hot banking. It is characterized by a structure that allows the water present between the two to be circulated.
（作 用）
上記構成の本発明のコンバインドサイクル発電プラント
では、排熱回収ボイラの蒸気ドラムの降下管下端部と、
脱気器との間に、ポンプを備えた水循環配管を設けられ
ており、ホットバンキング時に蒸気ドラムと脱気器およ
び節炭器との間に存在する水を循環させることができる
。(Function) In the combined cycle power plant of the present invention having the above configuration, the lower end of the downcomer pipe of the steam drum of the exhaust heat recovery boiler,
A water circulation pipe equipped with a pump is provided between the deaerator and the water circulating between the steam drum and the deaerator and economizer during hot banking.
したがって、ホットバンキング時に節炭器内での蒸気発
生を防止することができ、円滑、迅速な起動を行うこと
ができる。Therefore, generation of steam within the economizer can be prevented during hot banking, and smooth and quick startup can be achieved.
（実施例）
以下、本発明の詳細を図面を参照して一実施例について
説明する。(Example) Hereinafter, details of the present invention will be described with reference to the drawings.
第１図は、本発明の一実施例のコンバインドサイクル発
電プラントの要部構成を示すもので、この実施例のコン
バインドサイクル発電プラントでは、排熱回収ボイラの
蒸気ドラム８の降下管１２下端部と、脱気器１との間に
、循環水ポンプ２０および循環水調整弁２１を備えた水
循環配管２２が設けられている。なお、他の部位につい
ては、第２図に示した従来のコンバインドサイクル発電
プラントと同一であるので、同一部分には同一符号を付
して重複した説明は省略する。FIG. 1 shows the configuration of main parts of a combined cycle power plant according to an embodiment of the present invention. , a water circulation pipe 22 equipped with a circulating water pump 20 and a circulating water regulating valve 21 is provided between the deaerator 1 and the deaerator 1 . Note that other parts are the same as those of the conventional combined cycle power generation plant shown in FIG. 2, so the same parts are given the same reference numerals and redundant explanation will be omitted.
上記構成のこの実施例のコンバインドサイクル発電プラ
ントでは、プラント運転中は、復水ポンプ２によって供
給された水は、脱気器１に流入し、ここで脱気される。In the combined cycle power plant of this embodiment having the above configuration, during plant operation, water supplied by the condensate pump 2 flows into the deaerator 1 and is degassed there.
この後、脱気された水は、給水ポンプ１０により昇圧さ
れて、節炭器７に流入し、ここで加熱された後、蒸気ド
ラム８に流入する。Thereafter, the degassed water is pressurized by the water supply pump 10, flows into the economizer 7, is heated there, and then flows into the steam drum 8.
そして、蒸気ドラム８内の缶水は、降水管］２、蒸発器
］３を循環し、発生した蒸気は、ドラム蒸気弁１４を経
て蒸気タービンへ送られる。なお、この際は、循環水ポ
ンプ２０は停止、循環水調整弁２１は閉とされている。The canned water in the steam drum 8 circulates through the downcomer pipe 2 and the evaporator 3, and the generated steam is sent to the steam turbine via the drum steam valve 14. Note that, at this time, the circulating water pump 20 is stopped and the circulating water regulating valve 21 is closed.
一方、復水調整弁３、脱気用蒸気調整弁５、ドラム蒸気
止弁１−４を閉として、ホットバンキングを実施する際
には、循環水調整弁２］−を開け、循環水ポンプ２０を
起動するとともに、給水ポンプ］Ｏを作動、給水調整弁
１１を開の状態に保持して、節炭器７、蒸気ドラム８、
降水管１２、水循環配管２２、脱気器１のラインに水を
循環させ、節炭器７内での蒸気発生を防止する。On the other hand, when performing hot banking with the condensate regulating valve 3, deaeration steam regulating valve 5, and drum steam stop valve 1-4 closed, the circulating water regulating valve 2]- is opened and the circulating water pump 20 is closed. At the same time, the water supply pump ]O is activated, the water supply adjustment valve 11 is kept open, and the energy saver 7, steam drum 8,
Water is circulated through the downcomer pipe 12, the water circulation piping 22, and the deaerator 1 line to prevent steam generation in the economizer 7.
したがって、再起動を行った際に、節炭器７内で気胞に
よりハンマリングが生じることを防止することができ、
円滑、迅速な起動を行うことができる。Therefore, when restarting, it is possible to prevent hammering caused by air cells in the economizer 7.
A smooth and quick start-up can be performed.
［発明の効果］
以上説明したように、本発明のコンバインドサイクル発
電プラントによれば、ホットバンキング時に蒸気ドラム
と脱気器および節炭器との間に存在する水を循環させる
ことができ、ホットバンキング時に節炭器内での蒸気発
生を防止することができる。したがって、再起動を行っ
た際に、節炭器内で気胞によりハンマリングが生じるこ
とを防止することができ、円滑、迅速な起動を行うこと
ができる。[Effects of the Invention] As explained above, according to the combined cycle power generation plant of the present invention, the water present between the steam drum, the deaerator, and the economizer during hot banking can be circulated, and the It is possible to prevent steam generation within the economizer during banking. Therefore, when restarting, it is possible to prevent hammering caused by air cells within the economizer, and smooth and quick startup can be performed.
第１図は本発明の一実施例のコンバインドサイクル発電
プラントの要部構成を示す図、第２図は従来のコンバイ
ンドサイクル発電プラントの要部構成を示す図である。
］・・・・・・・・・脱気器
７・・・・・・・・・節炭器
８・・・・・・・・・蒸気ドラム
９・・・・・・・・・給水配管
１０・・・・・・給、水ポンプ
１１・・・・・・給水調整弁
１２・・・・・・降水管
１３・・・・・・蒸発器
２０・・・・・・循環水ポンプ
２１・・・・・・循環水調整弁
２２・・・・・・水循環配管FIG. 1 is a diagram showing the main part configuration of a combined cycle power generation plant according to an embodiment of the present invention, and FIG. 2 is a diagram showing the main part configuration of a conventional combined cycle power generation plant. ]・・・・・・・・・Deaerator 7・・・・・・・・・Economy device 8・・・・・・Steam drum 9・・・・・・Water supply piping 10... Supply, water pump 11... Water supply adjustment valve 12... Downpipe 13... Evaporator 20... Circulating water pump 21 ......Circulating water adjustment valve 22...Water circulation piping
Claims (1)
熱回収ボイラにより蒸気を発生させ、この蒸気により蒸
気タービンを回転させるコンバインドサイクル発電プラ
ントであって、前記排熱回収ボイラの蒸気ドラムに、脱
気器から節炭器を介して給水するよう構成されたコンバ
インドサイクル発電プラントにおいて、 前記排熱回収ボイラの蒸気ドラムの降下管下端部と前記
脱気器との間に、ポンプを備えた水循環配管を設け、ホ
ットバンキング時に前記蒸気ドラムと前記脱気器および
前記節炭器との間に存在する水を循環可能に構成したこ
とを特徴とするコンバインドサイクル発電プラント。(1) A combined cycle power generation plant in which steam is generated by an exhaust heat recovery boiler from exhaust gas after rotating a gas turbine, and the steam turbine is rotated by this steam, and the steam drum of the exhaust heat recovery boiler is , in a combined cycle power plant configured to supply water from a deaerator via a carbon saver, a pump is provided between the lower end of the downcomer pipe of the steam drum of the exhaust heat recovery boiler and the deaerator. 1. A combined cycle power generation plant, characterized in that water circulation piping is provided so that water present between the steam drum, the deaerator, and the economizer can be circulated during hot banking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5328790A JPH03253707A (en) | 1990-03-05 | 1990-03-05 | Combined cycle electric power generating plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5328790A JPH03253707A (en) | 1990-03-05 | 1990-03-05 | Combined cycle electric power generating plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03253707A true JPH03253707A (en) | 1991-11-12 |
Family
ID=12938512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5328790A Pending JPH03253707A (en) | 1990-03-05 | 1990-03-05 | Combined cycle electric power generating plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03253707A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525411A (en) * | 2017-08-09 | 2017-12-29 | 中冶华天工程技术有限公司 | Produce the walking beam furnace apparatus for vapour-cooling of superheated steam |
| WO2018099345A1 (en) * | 2016-11-29 | 2018-06-07 | 武汉都市环保工程技术股份有限公司 | Low calorific value coal gas power generation system and power generation method |
-
1990
- 1990-03-05 JP JP5328790A patent/JPH03253707A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018099345A1 (en) * | 2016-11-29 | 2018-06-07 | 武汉都市环保工程技术股份有限公司 | Low calorific value coal gas power generation system and power generation method |
| CN107525411A (en) * | 2017-08-09 | 2017-12-29 | 中冶华天工程技术有限公司 | Produce the walking beam furnace apparatus for vapour-cooling of superheated steam |
| CN107525411B (en) * | 2017-08-09 | 2020-01-10 | 中冶华天工程技术有限公司 | Step-type heating furnace vaporization cooling device for producing superheated steam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4578354B2 (en) | Waste heat utilization equipment for steam turbine plant | |
| JP4540472B2 (en) | Waste heat steam generator | |
| JPS6088806A (en) | Waste heat recoverer for internal-combustion engine | |
| JPH10212908A (en) | Combined cycle power generation plant and its steam supply method for cooling | |
| JPH03124902A (en) | Combined cycle power plant and operating method therefor | |
| JPS61152914A (en) | Starting of thermal power plant | |
| JPS58122308A (en) | Method and equipment for heat storage operation of waste heat recovery rankine cycle system | |
| JPH03221702A (en) | Duplex type heat exchanger for waste heat recovery | |
| JP2009097735A (en) | Feed-water warming system and exhaust heat recovering boiler | |
| JPH03253707A (en) | Combined cycle electric power generating plant | |
| JPS5925853B2 (en) | Power plant operation control method and device for implementing this method | |
| CN216521613U (en) | Water supply heating system | |
| JP2012102980A (en) | Blow tank and method of using the same | |
| JPH05322105A (en) | Device for heating feedwater for boiler | |
| JPH10311206A (en) | Combined cycle power generation plant | |
| JPH0384301A (en) | Naturally circulating waste heat recovery boiler | |
| JP2008075966A (en) | Once-through exhaust heat recovery boiler | |
| JPH1054501A (en) | Exhaust gas heat recovery device and method for operating the same | |
| JPH07217803A (en) | Method and equipment for starting waste heat boiler with at least two separating pressure device | |
| JP2000240405A (en) | Apparatus for operating reheating power generating plant | |
| JPH02309102A (en) | Hot banking device for boiler | |
| JPH0236761A (en) | Method and apparatus for starting steam turbine of magnetohydrodynamic complex power generation plant | |
| JPH10176804A (en) | Vertical waste heat recovery boiler and operating method thereof | |
| JPS6116881B2 (en) | ||
| JPH07332601A (en) | Operation method for exhaust heat recovery boiler |