Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP3628201B2 - Thermal power plant - Google Patents
[go: Go Back, main page]

JP3628201B2 - Thermal power plant - Google Patents

Thermal power plant Download PDF

Info

Publication number
JP3628201B2
JP3628201B2 JP02001799A JP2001799A JP3628201B2 JP 3628201 B2 JP3628201 B2 JP 3628201B2 JP 02001799 A JP02001799 A JP 02001799A JP 2001799 A JP2001799 A JP 2001799A JP 3628201 B2 JP3628201 B2 JP 3628201B2
Authority
JP
Japan
Prior art keywords
building
boiler
feed water
power plant
thermal power
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
Application number
JP02001799A
Other languages
Japanese (ja)
Other versions
JP2000220411A (en
Inventor
佳也 岩田
洋 手塚
秀敏 藤井
仁秀 高
英一 高橋
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP02001799A priority Critical patent/JP3628201B2/en
Publication of JP2000220411A publication Critical patent/JP2000220411A/en
Application granted granted Critical
Publication of JP3628201B2 publication Critical patent/JP3628201B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Engine Equipment That Uses Special Cycles (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は火力発電プラントに係わり、特に石炭バンカが石炭バンカ建屋内に配置されている火力発電プラントに関するものである。
【０００２】
【従来の技術】
従来一般に採用されているこの種の火力発電プラントは、図２に示されているように、蒸気タービン１が設置されているタービン建屋４、石炭を貯蔵する石炭バンカ１２が設置されている石炭バンカ建屋１５およびボイラ１７が設置されているボイラ建屋１６を備えている。
【０００３】
さらに、タービン建屋４のボイラ建屋側に、例えば給水加熱器、脱気器あるいはボイラ給水ポンプなどの補機類を設置する建屋３０が設けられている。すなわち、蒸気タービンの排気は復水器にて復水に凝縮され、復水ポンプ、グランド蒸気復水器、低圧給水加熱器、脱気器、ボイラ給水ポンプを経由し、最終的に高圧給水加熱器にて加熱した給水がボイラに供給されるようにするために、タービン建屋のボイラ側に、この給水加熱器、脱気器あるいはボイラ給水ポンプなどを設置する建屋が設けられている。
【０００４】
この場合、前記脱気器は、ボイラ給水ポンプに所定の圧力にて給水する必要があるため、大容量の火力発電所の場合には、この脱気器は通常タービン建屋の屋上に配置されるが、脱気器の設置高さは約２０ｍ以上になることが多く、一方火力発電所の容量が小さい場合には、蒸気タービンの設置高さが１０ｍ程度であることから、脱気器７を独立の建屋に設置することにより、タービン建屋を縮小するようにしている。
【０００５】
また、この場合、脱気器７の下流側に位置する高圧給水加熱器１０、１１は、胴体内の空気抜きや給水加熱器にて凝縮させたドレンを脱気器に回収することが多く、通常脱気器と上下関係に配置されているのが普通である。なお、この種の火力発電プラントに関連するものとしては、例えば特開昭５７−３１６号公報あるいは特開昭５５−１３２８６４号公報などが挙げられる。
【０００６】
【発明が解決しようとする課題】
このように形成されている火力発電プラントであると、蒸気タービン建屋のボイラ側に給水加熱器および脱気器を設置する専用の架台あるいは建屋が配置されることから、火力発電所の敷地を狭くし、また火力発電プラントの建設に障害が生じる恐れがあった。
【０００７】
本発明はこれに鑑みなされたもので、その目的とするところは、火力発電プラントの設置面積の縮小化が可能，換言すれば、狭い敷地内でも火力発電所を建設することが可能なこの種の火力発電プラントを提供することにある。
【０００８】
【課題を解決するための手段】
すなわち本発明は、蒸気タービンが設置されているタービン建屋と、石炭を貯蔵する石炭バンカとを備え、前記石炭バンカが石炭バンカ建屋内に配置されている火力発電プラントにおいて、前記蒸気タービンに付設されている補機類の一部，特に蒸気タービンの給水系に設けられている補機類の一部を、前記石炭バンカ建屋内に設置するようにし所期の目的を達成するようにしたものである。
【０００９】
また本発明は、蒸気タービンが設置されているタービン建屋と、ボイラが設置されているボイラ建屋とを備えた火力発電プラントにおいて、前記蒸気タービンに付設されている補機類の一部，特に蒸気タービンの給水系に設けられている補機類の一部を、前記ボイラ建屋内に設置するようにしたものである。
【００１０】
また、蒸気タービンが設置されているタービン建屋と、石炭を貯蔵する石炭バンカとを備え、前記石炭バンカが石炭バンカ建屋内に配置され、かつ蒸気タービンおよび蒸気タービンの排気を復水に凝縮する復水器および復水器出口からの復水を昇圧する復水ポンプおよび復水ポンプ出口から脱気器までの給水を加熱する低圧給水加熱器および給水中の酸素等を除去する脱気器および脱気器からの給水を昇圧し、ボイラまで給水するボイラ給水ポンプおよびボイラ給水ポンプ出口からボイラまでの給水を加熱する高圧給水加熱器および蒸気を発生させるボイラを備えた火力発電プラントにおいて、前記蒸気タービンの給水系に設けられている補機類の一部を、前記石炭バンカ建屋内に設置するようにしたものである。
【００１１】
また、この場合、前記給水系に設けられている補機類の一部を、低圧給水加熱器、脱気器、ボイラ給水ポンプあるいは高圧給水加熱器としたものである。
【００１２】
すなわちこのように形成された火力発電プラントであると、蒸気タービンに付設されている補機類の一部が、石炭バンカ建屋内あるいはボイラ建屋内に設置されるので、石炭バンカ建屋あるいはボイラ建屋に存在する空きスペース内が有効に利用され、したがって火力発電プラントの設置面積の縮小化が可能となり、狭い敷地内でも火力発電所を建設することが可能となるのである。
【００１３】
【発明の実施の形態】
以下図示した実施例に基づいて本発明を詳細に説明する。図１にはその火力発電プラントの断面が線図で示されている。４がタービン建屋であり、１５が石炭バンカ建屋、１６がボイラ建屋である。また、タービン建屋４内の符号１は、蒸気タービン、２が復水器、３が低圧第１給水加熱器である。
【００１４】
また、バンカ建屋内の５は低圧第２給水加熱器、６は低圧第３給水加熱器、７は脱気器、８はボイラ給水ポンプ、９は高圧第５給水加熱器、１０は高圧第６給水加熱器、１１は高圧第７給水加熱器、１２は石炭バンカ、１３は給炭機、１４は微粉炭機である。また、ボイラ建屋内の１７はボイラである。
【００１５】
火力発電プラントでは、蒸気タービン１の排気を復水器２にて、復水に凝縮させ、この復水を復水ポンプにて昇圧し、蒸気タービンの間隙部よりリークする微量の蒸気を復水に凝縮させるグランド蒸気復水器を経由した後に、復水器２内に内蔵している低圧第１給水加熱器３にてボイラ給水を加熱させる。
【００１６】
本発明の実施例では、従来の火力発電プラントと同様に、蒸気タービン１、復水器２、復水ポンプ、グランド蒸気復水器、低圧第１給水加熱器３はタービン建屋４内に設置されている。
【００１７】
低圧第１給水加熱器３出口の給水は低圧第２給水加熱器５、低圧第３給水加熱器６によりさらに加熱され、給水中の酸素等によるボイラ伝熱管等の腐食を防止するために脱気器７にて給水中の酸素等の気体を除去し、脱気器７内の貯水部に給水を貯水する。脱気器７の貯水量は各発電プラントにより異なるが、通常給水流量の１〜５分間相当としてる。
【００１８】
脱気器７の貯水はボイラ給水ポンプ８にて昇圧した後に、高圧第５給水加熱器９、高圧第６給水加熱器１０および高圧第７給水加熱器１１により給水を加熱し、ボイラ１７に給水し、ボイラ１７で石炭を燃焼させ蒸気を発生させ、蒸気タービン１に送気し、発電機を駆動することにより発電する系統構成となっている。
【００１９】
本発明の実施例では、低圧第２給水加熱器５、低圧第３給水加熱器６、脱気器７、ボイラ給水ポンプ８、高圧第５給水加熱器９、高圧第６給水加熱器１０および高圧第７給水加熱器１１を石炭を貯蔵する石炭バンカ１２、石炭バンカ１２に石炭を供給するコンベアの一部、石炭を微粉炭機１４に供給する給炭機１３および石炭を微粉炭に細分化する微粉炭機１４とともに石炭バンカ建屋１５内の空きスペースを有効に利用し、蒸気タービン１からの抽気蒸気配管等のタービン建屋４内の構成機器との連絡配管を短くする為に、タービン建屋４に極力近い位置に設置する必要がある。
【００２０】
石炭バンカ建屋１５内に配置される構成機器の配置は、給水の流れと関係が有り、それぞれの配置について説明すると、まず、石炭バンカ建屋１５の床面には高い安定性が必要な回転機器であるボイラ給水ポンプ８および微粉炭機１４が配置される。前述したようにボイラ給水ポンプ８は、タービン建屋４側に配置され、微粉炭機１４はボイラ１７の燃焼機に石炭を供給する必要があるため、ボイラ１７側に配置される。
【００２１】
低圧第２給水加熱器５は、加熱蒸気が凝縮したドレンを低圧第１給水加熱器３に器内圧力差を利用して流すため、低圧第１給水加熱器３と同一あるいは高い位置に設置する必要があり、石炭バンカ建屋１５に補助梁１８を設置し、床面と２階との間に配置する。なお、低圧第２給水加熱器５は、石炭バンカ建屋１５の２階面に十分な空きスペースが有る場合には補助梁１８を設置せずに、２階面に配置しても問題ない。
【００２２】
石炭バンカ建屋１５の２階面には、タービン建屋４側より順に高圧第５給水加熱器９、低圧第３給水加熱器６、給炭機１３と配置する。低圧第３給水加熱器６は給水を流す方向にしたがって、低圧第２給水加熱器５の上方であり、かつ、脱気器７の下方に配置する必要が有り、後述の高圧給水加熱器の給水の流れを考慮し、高圧第５給水加熱器９と給炭機１３の間に配置する。高圧第５給水加熱器９は給水を流す方向にしたがって、ボイラ給水ポンプ８の上方であり、かつ、高圧第６給水加熱器の下方に配置する必要が有り、後述の理由によりタービン建屋４に近い側に配置する。
【００２３】
給炭機１３は石炭バンカ１２から石炭を微粉炭機１４に供給するため、当該機器間に配置する必要が有り、微粉炭機１４と同様の理由からボイラ１７に近い側に配置する。
【００２４】
高圧第６給水加熱器１０および高圧第７給水加熱器１１は、高圧第５給水加熱器９の上方に配置する必要が有り、石炭バンカ建屋１５の３階面に配置する。高圧第７給水加熱器１１出口の給水はボイラ１７に供給するため、ボイラ１７側に配置する。したがって、高圧第６給水加熱器１０はタービン建屋４側に配置することになるため、石炭バンカ建屋１５の２階面に配置している高圧第５給水加熱器９もタービン建屋４側に配置することにより、給水配管およびドレン配管を合理的に配置することができる。
【００２５】
脱気器７の設置高さはボイラ給水ポンプ８の必要入口圧力により決定され、火力発電プラントの容量およびボイラ給水ポンプ８の性能により差異は有るが、約２０ｍ以上となる為、石炭バンカ建屋１５の４階面には脱気器７を配置する必要が有る。
【００２６】
石炭バンカ１２は微粉炭機１４、給炭機１３と同様の理由から、ボイラ１７よりに配置し、配置高さは石炭の各発電所により固有に決められる石炭貯蔵量および給炭機１３、微粉炭機１４の寸法により決められ、石炭バンカ建屋１５の高さを決定する。石炭バンカ１２上には石炭を石炭バンカ１２に供給するベルとコンベアが配置される。
【００２７】
以上により、石炭バンカ建屋の空きスペースを有効に利用することにより、給水加熱器および脱気器の専用の建屋を削除することができ、火力発電プラント全体の設置面積を小さくすることができる。本発明の実施例によれば、特に、タービン建屋４とボイラ１７間の配置スペースを縮小化できるため、ボイラ１７から蒸気タービン１に連絡する主蒸気配管、高温再熱蒸気配管、低温再熱蒸気配管の長さを短くすることができ、１０００ＭＷ級の火力発電設備において、２０ｍ程度前述の配管を短縮可能となる。
【００２８】
したがって、溶接に高い技量が要求される高温、高圧に耐久性がある合金鋼を採用している主蒸気配管、高温再熱蒸気配管の配管長を短くすることができるため、工場および現地での溶接点数を削減でき、火力発電プラントの信頼性を向上させることができる。また、主蒸気等の圧損を低減することができるため、発電効率の向上にも寄与できる。
【００２９】
図３に本発明の別の実施例の火力発電プラントの側面図を、図４に本発明の別の実施例のボイラ建屋３階平面図が示されている。
【００３０】
本発明の別の実施例では、低圧第２給水加熱器５、低圧第３給水加熱器６、脱気器７、ボイラ給水ポンプ８、高圧第５給水加熱器９、高圧第６給水加熱器１０および高圧第７給水加熱器１１をボイラ１７、ウインドボックス１９、エアダクト２０、ダンパ２１等とともにボイラ建屋１６内の空きスペースを有効に利用し、各構成機器を配置することにより、設置面積を縮小している。
【００３１】
各構成機器の設置位置については、前記石炭バンカ建屋１５内に配置する場合と同様な理由にて配置するが、ボイラ１７と石炭バンカ建屋１５との間にはウインドボックス１９および微粉炭機１４よりウインドボックス１９を経由してボイラ１７に燃料を供給する配管等が配置されるため、各構成機器を配置しないことが望ましい。
【００３２】
各階の配置は、ボイラ給水ポンプ８を床面に設置し、低圧第２給水加熱器５はボイラ建屋１６に補助梁１８を設置し、床面と２階面との間に配置する。なお、低圧第２給水加熱器５はボイラ建屋１６の２階面に十分な空きスペースが有る場合には補助梁１８を設置せずに、２階面に配置しても問題ない。
【００３３】
ボイラ建屋１６の２階面には、後述の高圧給水加熱器の給水の流れを考慮し、ボイラ１７側より順に低圧第３給水加熱器６、高圧第５給水加熱器９と配置する。ボイラ建屋１６の３階面には、高圧第７給水加熱器１１の出口給水をボイラ１７に供給するため、給水配管を最短化するために、ボイラ１７側より順に高圧第７給水加熱器１１および高圧第６給水加熱器１０を配置する。
【００３４】
したがって、高圧第６給水加熱器１０を反ボイラ側に配置したために、ボイラ建屋１６の２階面に配置している高圧第５給水加熱器９も反ボイラ側に配置することにより、給水配管およびドレン配管を合理的に配置することができる。
【００３５】
なお、ボイラ建屋１６の２階面および３階面にはボイラ１７のバーナがあるため、燃料配管の設置スペースおよび２次空気通風機より送風された空気をエアダクト２０経由でウインドボックス１９に供給する構造となっており、給水加熱器等を配置する場合には、図４のボイラ鉄骨３階平面図に示す様に、エアダクト２０、ダンパ２１、ウインドボックス１９の無い場所に配置する必要がある。ボイラ建屋４階面には脱気器７を設置する。
【００３６】
以上により、ボイラ建屋の空きスペースを有効に利用することにより、給水加熱器および脱気器の専用の建屋を削除することができ、火力発電プラント全体の設置面積を小さくすることができ、石炭バンカ建屋に構成機器を配置した場合と同様の効果を得ることができる。
【００３７】
図５に本発明の他の実施例の火力発電プラント側面図が示されている。本発明の他の実施例では重油等の油焚きボイラの場合の実施例であり、石炭バンカ建屋、石炭バンカ、給炭機、微粉炭機等が不要な発電プラントにおいて、ボイラ建屋１６内に低圧第２給水加熱器５、低圧第３給水加熱器６、脱気器７、ボイラ給水ポンプ８、高圧第５給水加熱器９、高圧第６給水加熱器１０および高圧第７給水加熱器１１をボイラ１７、ウンドボックス１９、エアダクト２０、ダンパ２１等とともに配置することにより、設置面積を縮小した例が示されている。
【００３８】
各階の構成および配置は本発明の別の実施例で説明したものと同様であり、油焚きボイラの場合でも、ボイラ建屋の空きスペースを有効に利用することにより、給水加熱器および脱気器の専用の建屋を削除することができ、火力発電プラント全体の設置面積を小さくすることができ、同様の効果を得ることができる。
【００３９】
以上説明してきたようにこのように形成された火力発電プラントであると、本発明によれば、火力発電プラントにおける各構成機器を合理的に配置でき、設置面積の縮小化が可能となる。また、タービン建屋とボイラ建屋の間隔を狭くすることが可能となった為、高温、高圧の主蒸気配管、再熱配管を短くする事ができ、火力発電プラントの信頼性を高めることが可能となる。
【００４０】
【発明の効果】
以上説明してきたように本発明によれば、火力発電プラントの設置面積の縮小化が可能，換言すれば、狭い敷地内でも火力発電所を建設することが可能なこの種の火力発電プラントを得ることができる。
【図面の簡単な説明】
【図１】本発明の火力発電プラントの一実施例を示す縦断側面線図である。
【図２】従来の火力発電プラントの縦断側面線図である。
【図３】本発明の火力発電プラントの他の実施例を示す縦断側面線図である。
【図４】本発明の火力発電プラントの他の実施例を示すボイラ建屋３階平面図である。
【図５】本発明の火力発電プラントの他の実施例を示す縦断側面線図である。
【符号の説明】
１…蒸気タービン、２…復水器、３…低圧第１給水加熱器、４…タービン建屋、５…低圧第２給水加熱器、６…低圧第３給水加熱器、７…脱気器、８…ボイラ給水ポンプ、９…高圧第５給水加熱器、１０…高圧第６給水加熱器、１１…高圧第７給水加熱器、１２…石炭バンカ、１３…給炭機、１４…微粉炭機、１５…石炭バンカ建屋、１６…ボイラ建屋、１７…ボイラ、１８…補助梁、１９…ウインドボックス、２０…エアダクト、２１…ダンパ。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a thermal power plant, and more particularly to a thermal power plant in which a coal bunker is disposed in a coal bunker building.
[0002]
[Prior art]
As shown in FIG. 2, this type of thermal power plant that has been generally adopted in the past includes a turbine building 4 in which a steam turbine 1 is installed, and a coal bunker in which a coal bunker 12 for storing coal is installed. The boiler building 16 in which the building 15 and the boiler 17 are installed is provided.
[0003]
Furthermore, the building 30 which installs auxiliary machines, such as a feed water heater, a deaerator, or a boiler feed water pump, is provided in the boiler building side of the turbine building 4, for example. In other words, the exhaust from the steam turbine is condensed into condensate by the condenser, and finally the high pressure feed water is heated via the condensate pump, the ground steam condenser, the low pressure feed water heater, the deaerator, and the boiler feed pump. In order to supply water supplied to the boiler to the boiler, a building in which this water heater, deaerator, boiler feed pump, and the like are installed on the boiler side of the turbine building.
[0004]
In this case, since the deaerator needs to supply water to the boiler feed pump at a predetermined pressure, in the case of a large-capacity thermal power plant, the deaerator is usually arranged on the roof of the turbine building. However, the installation height of the deaerator is often about 20 m or more. On the other hand, when the capacity of the thermal power plant is small, the installation height of the steam turbine is about 10 m. By installing it in an independent building, the turbine building is reduced.
[0005]
Further, in this case, the high-pressure feed water heaters 10 and 11 located on the downstream side of the deaerator 7 often collect the drain condensed in the fuselage or the feed water heater in the deaerator. It is usually arranged in a vertical relationship with the deaerator. In addition, as a thing relevant to this kind of thermal power plant, Unexamined-Japanese-Patent No. 57-316, Unexamined-Japanese-Patent No. 55-132864, etc. are mentioned, for example.
[0006]
[Problems to be solved by the invention]
In the case of a thermal power plant formed in this way, a dedicated base or building for installing a feed water heater and a deaerator is arranged on the boiler side of the steam turbine building, so the site of the thermal power plant is narrowed. In addition, there was a risk that the construction of the thermal power plant would be hindered.
[0007]
The present invention has been made in view of this, and an object of the present invention is to reduce the installation area of a thermal power plant, in other words, this kind of construction capable of constructing a thermal power plant even in a narrow site. Is to provide a thermal power plant.
[0008]
[Means for Solving the Problems]
That is, the present invention includes a turbine building in which a steam turbine is installed and a coal bunker for storing coal, and the coal bunker is attached to the steam turbine in a thermal power plant arranged in the coal bunker building. In order to achieve the intended purpose, some of the auxiliary equipment, particularly the part of the auxiliary equipment provided in the steam turbine water supply system, is installed in the coal bunker building. is there.
[0009]
Further, the present invention provides a thermal power plant including a turbine building in which a steam turbine is installed and a boiler building in which a boiler is installed, and particularly a part of auxiliary equipment attached to the steam turbine, particularly steam. A part of auxiliary machinery provided in the water supply system of the turbine is installed in the boiler building.
[0010]
A turbine building in which a steam turbine is installed; and a coal bunker for storing coal; the coal bunker is disposed in the coal bunker building; and the steam turbine and the steam turbine exhaust are condensed into condensate. A condensate pump that boosts the condensate from the condenser and the outlet of the condenser, a low-pressure feed water heater that heats the feed water from the outlet of the condensate pump to the deaerator, and a deaerator and deaerator that removes oxygen, etc. In the thermal power plant including a boiler feed pump that boosts feed water from an air vessel and feeds water to the boiler, a high-pressure feed water heater that heats feed water from the boiler feed pump outlet to the boiler, and a boiler that generates steam, the steam turbine Some of the auxiliary equipment provided in the water supply system is installed in the coal bunker building.
[0011]
In this case, some of the auxiliary equipment provided in the water supply system is a low-pressure feed water heater, a deaerator, a boiler feed water pump, or a high-pressure feed water heater.
[0012]
That is, in the case of a thermal power plant formed in this way, some of the auxiliary equipment attached to the steam turbine is installed in the coal bunker building or boiler building. The existing vacant space is effectively used, so that the installation area of the thermal power plant can be reduced, and the thermal power plant can be constructed even in a small site.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on the illustrated embodiments. FIG. 1 shows a diagrammatic cross section of the thermal power plant. 4 is a turbine building, 15 is a coal bunker building, and 16 is a boiler building. Moreover, the code | symbol 1 in the turbine building 4 is a steam turbine, 2 is a condenser, 3 is a low voltage | pressure 1st feed water heater.
[0014]
In the bunker building, 5 is a low pressure second feed water heater, 6 is a low pressure third feed water heater, 7 is a deaerator, 8 is a boiler feed pump, 9 is a high pressure fifth feed water heater, and 10 is a high pressure sixth. A feed water heater, 11 is a high pressure seventh feed water heater, 12 is a coal bunker, 13 is a coal feeder, and 14 is a pulverized coal machine. Reference numeral 17 in the boiler building is a boiler.
[0015]
In the thermal power plant, the exhaust from the steam turbine 1 is condensed into condensate by the condenser 2, and this condensate is pressurized by the condensate pump to condense a small amount of steam leaking from the gap portion of the steam turbine. Then, the boiler feed water is heated by the low-pressure first feed water heater 3 built in the condenser 2 after passing through the ground steam condenser to be condensed.
[0016]
In the embodiment of the present invention, the steam turbine 1, the condenser 2, the condensate pump, the ground steam condenser, and the low-pressure first feed water heater 3 are installed in the turbine building 4 as in the conventional thermal power plant. ing.
[0017]
The feed water at the outlet of the low-pressure first feed water heater 3 is further heated by the low-pressure second feed water heater 5 and the low-pressure third feed water heater 6 and deaerated to prevent corrosion of the boiler heat transfer tube and the like due to oxygen in the feed water. Gas such as oxygen in the water supply is removed by the vessel 7, and the water supply is stored in the water storage section in the deaerator 7. Although the amount of water stored in the deaerator 7 varies depending on each power plant, it corresponds to 1 to 5 minutes of the normal water supply flow rate.
[0018]
The water stored in the deaerator 7 is boosted by the boiler feed pump 8, and then the feed water is heated by the high pressure fifth feed water heater 9, the high pressure sixth feed water heater 10, and the high pressure seventh feed water heater 11 to feed the boiler 17. Then, the boiler 17 burns coal to generate steam, feeds it to the steam turbine 1, and drives the generator to generate power.
[0019]
In the embodiment of the present invention, the low pressure second feed water heater 5, the low pressure third feed water heater 6, the deaerator 7, the boiler feed pump 8, the high pressure fifth feed water heater 9, the high pressure sixth feed water heater 10 and the high pressure. The seventh feed water heater 11 is a coal bunker 12 for storing coal, a part of a conveyor for supplying coal to the coal bunker 12, a coal feeder 13 for supplying coal to the pulverized coal machine 14, and the coal is subdivided into pulverized coal. In order to effectively use the empty space in the coal bunker building 15 together with the pulverized coal machine 14 and shorten the connection piping with the components in the turbine building 4 such as the extraction steam piping from the steam turbine 1, It is necessary to install it as close as possible.
[0020]
The arrangement of components arranged in the coal bunker building 15 is related to the flow of water supply. Each arrangement will be described. First, the floor surface of the coal bunker building 15 is a rotating device that requires high stability. A certain boiler feed pump 8 and a pulverized coal machine 14 are arranged. As described above, the boiler feed pump 8 is disposed on the turbine building 4 side, and the pulverized coal machine 14 is disposed on the boiler 17 side because it is necessary to supply coal to the combustor of the boiler 17.
[0021]
The low-pressure second feed water heater 5 is installed at the same or higher position as the low-pressure first feed water heater 3 in order to cause the drain condensed with the heating steam to flow to the low-pressure first feed water heater 3 using the internal pressure difference. The auxiliary beam 18 is installed in the coal bunker building 15 and disposed between the floor surface and the second floor. The low-pressure second feed water heater 5 can be arranged on the second floor without installing the auxiliary beam 18 when there is a sufficient space on the second floor of the coal bunker building 15.
[0022]
On the second floor of the coal bunker building 15, a high pressure fifth feed water heater 9, a low pressure third feed water heater 6, and a coal feeder 13 are arranged in this order from the turbine building 4 side. The low-pressure third feed water heater 6 needs to be arranged above the low-pressure second feed water heater 5 and below the deaerator 7 in accordance with the flow direction of the feed water. Is arranged between the high-pressure fifth feed water heater 9 and the coal feeder 13. The high-pressure fifth feed water heater 9 needs to be disposed above the boiler feed pump 8 and below the high-pressure sixth feed water heater according to the direction in which the feed water flows, and is close to the turbine building 4 for reasons described later. Place on the side.
[0023]
Since the coal feeder 13 supplies coal from the coal bunker 12 to the pulverized coal machine 14, it is necessary to arrange the coal feeder 13 between the devices, and for the same reason as the pulverized coal machine 14, the coal feeder 13 is disposed on the side closer to the boiler 17.
[0024]
The high-pressure sixth feed water heater 10 and the high-pressure seventh feed water heater 11 need to be arranged above the high-pressure fifth feed water heater 9 and are arranged on the third floor of the coal bunker building 15. Since the feed water at the outlet of the high-pressure seventh feed water heater 11 is supplied to the boiler 17, it is arranged on the boiler 17 side. Accordingly, the sixth high-pressure feed water heater 10 is arranged on the turbine building 4 side, and therefore the high-pressure fifth feed water heater 9 arranged on the second floor of the coal bunker building 15 is also arranged on the turbine building 4 side. Thus, the water supply pipe and the drain pipe can be rationally arranged.
[0025]
The installation height of the deaerator 7 is determined by the required inlet pressure of the boiler feed pump 8, and there are differences depending on the capacity of the thermal power plant and the performance of the boiler feed pump 8, but since it is about 20 m or more, the coal bunker building 15 It is necessary to arrange the deaerator 7 on the fourth floor.
[0026]
The coal bunker 12 is disposed from the boiler 17 for the same reason as the pulverized coal machine 14 and the coal feeder 13, and the height of the coal bunker 12 is uniquely determined by each coal power plant and the coal feeder 13, the fine powder. The height of the coal bunker building 15 is determined by the size of the coal machine 14. On the coal bunker 12 is disposed Bell and conveyor for supplying coal to the coal bunker 12.
[0027]
As described above, by effectively using the empty space of the coal bunker building, the dedicated building for the feed water heater and the deaerator can be deleted, and the installation area of the entire thermal power plant can be reduced. According to the embodiment of the present invention, in particular, since the arrangement space between the turbine building 4 and the boiler 17 can be reduced, the main steam pipe, the high-temperature reheat steam pipe, and the low-temperature reheat steam communicating from the boiler 17 to the steam turbine 1. The length of the piping can be shortened, and the above-described piping can be shortened by about 20 m in a 1000 MW class thermal power generation facility.
[0028]
Therefore, it is possible to shorten the length of main steam pipes and high-temperature reheat steam pipes that use high-temperature and high-pressure durable alloy steels that require high skill in welding. The number of welding points can be reduced, and the reliability of the thermal power plant can be improved. In addition, pressure loss of main steam and the like can be reduced, which can contribute to improvement in power generation efficiency.
[0029]
FIG. 3 is a side view of a thermal power plant according to another embodiment of the present invention, and FIG. 4 is a plan view of the third floor of a boiler building according to another embodiment of the present invention.
[0030]
In another embodiment of the present invention, the low pressure second feed water heater 5, the low pressure third feed water heater 6, the deaerator 7, the boiler feed pump 8, the high pressure fifth feed water heater 9, and the high pressure sixth feed water heater 10. In addition, the high-pressure seventh feed water heater 11 is effectively used in the boiler building 16 together with the boiler 17, the wind box 19, the air duct 20, the damper 21 and the like, and each component device is arranged to reduce the installation area. ing.
[0031]
About the installation position of each component apparatus, although arrange | positioning for the same reason as arrange | positioning in the said coal bunker building 15, between the boiler 17 and the coal bunker building 15, from the wind box 19 and the pulverized coal machine 14, Since piping for supplying fuel to the boiler 17 via the wind box 19 is arranged, it is desirable not to arrange each component device.
[0032]
As for the arrangement of each floor, the boiler feed pump 8 is installed on the floor, and the low-pressure second feed water heater 5 is installed between the floor and the second floor with an auxiliary beam 18 installed in the boiler building 16. The low-pressure second feed water heater 5 can be arranged on the second floor without installing the auxiliary beam 18 when there is a sufficient space on the second floor of the boiler building 16.
[0033]
On the second floor of the boiler building 16, a low-pressure third feed water heater 6 and a high-pressure fifth feed water heater 9 are arranged in order from the boiler 17 side in consideration of the flow of feed water from a high-pressure feed water heater described later. On the third floor of the boiler building 16, in order to supply the outlet water of the high pressure seventh feed water heater 11 to the boiler 17, in order to minimize the feed water piping, the high pressure seventh feed water heater 11 and the boiler 17 in order from the boiler 17 side. A high pressure sixth feed water heater 10 is arranged.
[0034]
Accordingly, since the high-pressure sixth feed water heater 10 is arranged on the anti-boiler side, the high-pressure fifth feed water heater 9 arranged on the second floor of the boiler building 16 is also arranged on the anti-boiler side, so that the water supply pipe and The drain piping can be arranged rationally.
[0035]
Since the boiler building 16 has burners for the boiler 17 on the second floor and the third floor, the air blown from the installation space of the fuel pipe and the secondary air ventilator is supplied to the wind box 19 via the air duct 20. When the feed water heater or the like is arranged, it is necessary to arrange it in a place without the air duct 20, the damper 21 and the wind box 19 as shown in the third floor plan view of the boiler steel frame in FIG. A deaerator 7 is installed on the fourth floor of the boiler building.
[0036]
As described above, by effectively using the empty space in the boiler building, the dedicated building for the feed water heater and the deaerator can be deleted, the installation area of the entire thermal power plant can be reduced, and the coal bunker It is possible to obtain the same effect as when the constituent devices are arranged in the building.
[0037]
FIG. 5 shows a side view of a thermal power plant according to another embodiment of the present invention. In another embodiment of the present invention, an oil-fired boiler such as heavy oil is used. In a power plant that does not require a coal bunker building, a coal bunker, a coal feeder, a pulverized coal machine, etc., a low pressure is generated in the boiler building 16. The second feed water heater 5, the low pressure third feed water heater 6, the deaerator 7, the boiler feed water pump 8, the high pressure fifth feed water heater 9, the high pressure sixth feed water heater 10 and the high pressure seventh feed water heater 11 are boilers. 17, the example which reduced the installation area by arrange | positioning with the wind box 19, the air duct 20, the damper 21, etc. is shown.
[0038]
The configuration and arrangement of each floor are the same as those described in another embodiment of the present invention, and even in the case of an oil-fired boiler, by effectively utilizing the empty space in the boiler building, the feed water heater and the deaerator The dedicated building can be deleted, the installation area of the entire thermal power plant can be reduced, and the same effect can be obtained.
[0039]
As described above, in the case of the thermal power plant formed as described above, according to the present invention, each component device in the thermal power plant can be rationally arranged, and the installation area can be reduced. In addition, since the space between the turbine building and the boiler building can be narrowed, the high-temperature and high-pressure main steam piping and reheat piping can be shortened, and the reliability of the thermal power plant can be improved. Become.
[0040]
【The invention's effect】
As described above, according to the present invention, it is possible to reduce the installation area of a thermal power plant, in other words, to obtain this type of thermal power plant capable of constructing a thermal power plant even in a narrow site. be able to.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view showing an embodiment of a thermal power plant of the present invention.
FIG. 2 is a longitudinal side view of a conventional thermal power plant.
FIG. 3 is a longitudinal sectional side view showing another embodiment of the thermal power plant of the present invention.
FIG. 4 is a plan view of the third floor of a boiler building showing another embodiment of the thermal power plant of the present invention.
FIG. 5 is a longitudinal sectional side view showing another embodiment of the thermal power plant of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Steam turbine, 2 ... Condenser, 3 ... Low pressure 1st feed water heater, 4 ... Turbine building, 5 ... Low pressure 2nd feed water heater, 6 ... Low pressure 3rd feed water heater, 7 ... Deaerator, 8 DESCRIPTION OF SYMBOLS ... Boiler feed pump, 9 ... High pressure 5th feed water heater, 10 ... High pressure 6th feed water heater, 11 ... High pressure 7th feed water heater, 12 ... Coal bunker, 13 ... Coal feeder, 14 ... Pulverized coal machine, 15 Coal bunker building, 16 ... Boiler building, 17 ... Boiler, 18 ... Auxiliary beam, 19 ... Wind box, 20 ... Air duct, 21 ... Damper.

Claims (6)

蒸気タービンが設置されているタービン建屋と、石炭を貯蔵する石炭バンカとを備え、前記石炭バンカが石炭バンカ建屋内に配置されている火力発電プラントにおいて、
前記蒸気タービンに付設されている補機類の一部を、前記石炭バンカ建屋内に設置するようにしたことを特徴とする火力発電プラント。In a thermal power plant comprising a turbine building in which a steam turbine is installed, and a coal bunker for storing coal, the coal bunker being disposed in the coal bunker building,
A thermal power plant characterized in that a part of auxiliary equipment attached to the steam turbine is installed in the coal bunker building. 蒸気タービンが設置されているタービン建屋と、石炭を貯蔵する石炭バンカとを備え、前記石炭バンカが石炭バンカ建屋内に配置されている火力発電プラントにおいて、
前記蒸気タービンの給水系に設けられている補機類の一部を、前記石炭バンカ建屋内に設置するようにしたことを特徴とする火力発電プラント。In a thermal power plant comprising a turbine building in which a steam turbine is installed, and a coal bunker for storing coal, the coal bunker being disposed in the coal bunker building,
A thermal power plant, wherein a part of auxiliary equipment provided in a water supply system of the steam turbine is installed in the coal bunker building. 蒸気タービンが設置されているタービン建屋と、ボイラが設置されているボイラ建屋とを備えた火力発電プラントにおいて、
前記蒸気タービンに付設されている補機類の一部を、前記ボイラ建屋内に設置するようにしたことを特徴とする火力発電プラント。In a thermal power plant including a turbine building in which a steam turbine is installed and a boiler building in which a boiler is installed,
A thermal power plant characterized in that a part of auxiliary equipment attached to the steam turbine is installed in the boiler building. 蒸気タービンが設置されているタービン建屋と、ボイラが設置されているボイラ建屋とを備えた火力発電プラントにおいて、
前記蒸気タービンの給水系に設けられている補機類の一部を、前記ボイラ建屋内に設置するようにしたことを特徴とする火力発電プラント。In a thermal power plant including a turbine building in which a steam turbine is installed and a boiler building in which a boiler is installed,
A thermal power plant characterized in that a part of auxiliary equipment provided in a water supply system of the steam turbine is installed in the boiler building. 蒸気タービンが設置されているタービン建屋と、石炭を貯蔵する石炭バンカとを備え、前記石炭バンカが石炭バンカ建屋内に配置され、かつ蒸気タービンおよび蒸気タービンの排気を復水に凝縮する復水器および復水器出口からの復水を昇圧する復水ポンプおよび復水ポンプ出口から脱気器までの給水を加熱する低圧給水加熱器および給水中の酸素等を除去する脱気器および脱気器からの給水を昇圧し、ボイラまで給水するボイラ給水ポンプおよびボイラ給水ポンプ出口からボイラまでの給水を加熱する高圧給水加熱器および蒸気を発生させるボイラを備えた火力発電プラントにおいて、
前記蒸気タービンの給水系に設けられている補機類の一部を、前記石炭バンカ建屋内に設置するようにしたことを特徴とする火力発電プラント。A condenser comprising a turbine building in which a steam turbine is installed and a coal bunker for storing coal, the coal bunker being disposed in the coal bunker building, and condensing the steam turbine and the exhaust of the steam turbine into condensate A condensate pump for boosting the condensate from the condenser outlet, a low pressure feed water heater for heating the feed water from the condensate pump outlet to the deaerator, and a deaerator and deaerator for removing oxygen and the like in the feed water In a thermal power plant equipped with a boiler feedwater pump that boosts the feedwater from the boiler, a high-pressure feedwater heater that heats the feedwater from the boiler feedwater pump outlet to the boiler, and a boiler that generates steam,
A thermal power plant, wherein a part of auxiliary equipment provided in a water supply system of the steam turbine is installed in the coal bunker building. 前記給水系に設けられている補機類の一部は、低圧給水加熱器、脱気器、ボイラ給水ポンプあるいは高圧給水加熱器である請求項２，４または５記載の火力発電プラント。The thermal power plant according to claim 2, 4 or 5, wherein some of the auxiliary equipment provided in the feed water system is a low pressure feed water heater, a deaerator, a boiler feed water pump, or a high pressure feed water heater.
JP02001799A 1999-01-28 1999-01-28 Thermal power plant Expired - Fee Related JP3628201B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP02001799A JP3628201B2 (en) 1999-01-28 1999-01-28 Thermal power plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP02001799A JP3628201B2 (en) 1999-01-28 1999-01-28 Thermal power plant

Publications (2)

Publication Number Publication Date
JP2000220411A JP2000220411A (en) 2000-08-08
JP3628201B2 true JP3628201B2 (en) 2005-03-09

Family

ID=12015344

Family Applications (1)

Application Number Title Priority Date Filing Date
JP02001799A Expired - Fee Related JP3628201B2 (en) 1999-01-28 1999-01-28 Thermal power plant

Country Status (1)

Country Link
JP (1) JP3628201B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101549130B1 (en) * 2013-10-31 2015-09-02 두산중공업 주식회사 Power plant and feed water apparatus arrangement method for boiler thereof
CN108167806A (en) * 2017-12-26 2018-06-15 中国能源建设集团江苏省电力设计院有限公司 Million unit high-pressure heater system structure of double reheat and its application method

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1577507A1 (en) * 2004-03-01 2005-09-21 Alstom Technology Ltd Coal fired power plant
JP4520481B2 (en) * 2007-04-13 2010-08-04 株式会社日立製作所 High temperature steam turbine plant
FI124375B (en) 2009-04-09 2014-07-31 Foster Wheeler Energia Oy Thermal power plant
JP4934738B2 (en) * 2010-05-20 2012-05-16 株式会社日立製作所 High temperature steam turbine plant
CN102352779A (en) * 2011-10-20 2012-02-15 中国电力工程顾问集团华东电力设计院 Structural system of steam turbine generator unit with novel structural arrangement
CN102913009B (en) * 2012-11-02 2015-03-11 山东电力工程咨询院有限公司 Combined structure system between pulverized coal boiler and side bunker bay of coal-fired power plant
CN102900253A (en) * 2012-11-04 2013-01-30 哈尔滨锅炉厂有限责任公司 Combined coal bunker with two rows of posts between two furnaces and deaerator in middle and arrangement method
CN103615126A (en) * 2013-11-05 2014-03-05 中国能源建设集团广东省电力设计研究院 Coal conveying system
CN104153609B (en) * 2014-07-28 2016-08-24 国核电力规划设计研究院 Two-shipper group coaling system, with the coal unit of coaling system and upper coal method
JP2017036870A (en) * 2015-08-07 2017-02-16 Mitsubishi Hitachi Power Systems Ltd Feed water heater and steam turbine plant
CN105421831B (en) * 2015-10-29 2018-03-06 中国电建集团河北省电力勘测设计研究院有限公司 Thermal power plant main building arrangement form based on joint side coal bunker scheme
CN107062192B (en) * 2017-04-20 2019-03-12 中国能源建设集团广东省电力设计研究院有限公司 Deaerator bay
CN108533012B (en) * 2018-05-24 2023-11-14 中国电力工程顾问集团西北电力设计院有限公司 Lateral arrangement structure of 660 MW-level unit steam turbine generator unit of thermal power plant
CN109484817A (en) * 2018-11-26 2019-03-19 中国电力工程顾问集团西南电力设计院有限公司 CFB unit is delivered coal system
CN110630056A (en) * 2019-11-11 2019-12-31 福能(贵州)发电有限公司 The structure of a compact three-row turbine room for 660MW coal-fired generating set
CN114961905A (en) * 2022-06-06 2022-08-30 中国电力工程顾问集团华东电力设计院有限公司 Secondary reheating unit combined arrangement mode

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101549130B1 (en) * 2013-10-31 2015-09-02 두산중공업 주식회사 Power plant and feed water apparatus arrangement method for boiler thereof
CN108167806A (en) * 2017-12-26 2018-06-15 中国能源建设集团江苏省电力设计院有限公司 Million unit high-pressure heater system structure of double reheat and its application method
CN108167806B (en) * 2017-12-26 2019-08-09 中国能源建设集团江苏省电力设计院有限公司 Million unit high-pressure heater system structure of double reheat and its application method

Also Published As

Publication number Publication date
JP2000220411A (en) 2000-08-08

Similar Documents

Publication Publication Date Title
JP3628201B2 (en) Thermal power plant
RU2537823C2 (en) Improved steam cycle for dual pressure waste heat boiler with intermediate superheating
US6230480B1 (en) High power density combined cycle power plant
Annaratone Steam generators: description and design
US8096268B2 (en) Municipal solid waste fuel steam generator with waterwall furnace platens
JP5462128B2 (en) Thermal power plant
US20100101564A1 (en) Shop-assembled solar receiver heat exchanger
CN102016411A (en) High efficiency feedwater heater
US5457721A (en) Method and apparatus for improving the performance of a nuclear power electrical generation system
Somova et al. Modern coal-fired power units for ultra-supercritical steam conditions
CN102292522A (en) Synthesis gas-based fuel system, and method for the operation of a synthesis gas-based fuel system
Cziesla et al. Lünen–state-of-theart ultra supercritical steam power plant under construction
JP2014084820A (en) Subcritical pressure high temperature caloric power-generating plant and subcritical pressure high temperature transformation operation once-through boiler
Henderson Upgrading and efficiency improvement in coal-fired power plants
JP3965646B2 (en) Steam power plant installed near the surface of the earth
CN101305163B (en) Method for starting a steam turbine installation
JP2002256816A (en) Combined cycle power plant
JP5041941B2 (en) Once-through exhaust heat recovery boiler
JP2000045713A (en) Combined cycle power plant
Shabani et al. Performance assessment and leakage analysis of feed water pre-heaters in natural gas-fired steam power plants.
Pankov et al. Methods to combat the causes of damage to the steam-forming pipes of the low-pressure circuit in CCPP heat recovery steam generators
Shamarokov et al. The new generation of moisture separators-reheaters for steam-turbine units of nuclear power plants (NPP) with VVER-reactors
Nightingale Thermal and Mechanical Design Guidelines and General Considerations for the Proper Design, and Location, of Various Types of Service Connections on Steam Surface Condensers
Lakowski et al. Power Generation and Superheater Upgrade Project at the Burnaby MSW Plant
Britt Power Generation and Superheater Upgrade Project at the Burnaby MSW Plant

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040721

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040907

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20041102

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20041130

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20041207

LAPS Cancellation because of no payment of annual fees