JP2008175072A - Drain treatment device of moisture separating heater - Google Patents

Drain treatment device of moisture separating heater Download PDF

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Publication number
JP2008175072A
JP2008175072A JP2007006777A JP2007006777A JP2008175072A JP 2008175072 A JP2008175072 A JP 2008175072A JP 2007006777 A JP2007006777 A JP 2007006777A JP 2007006777 A JP2007006777 A JP 2007006777A JP 2008175072 A JP2008175072 A JP 2008175072A
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drain
drain tank
heat exchangers
heater
tank
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Yoshinori Imahari
義典 今治
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Mitsubishi Heavy Industries Ltd
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Mitsubishi Heavy Industries Ltd
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    • 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
    • Y02E30/00—Energy generation of nuclear origin

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Abstract

<P>PROBLEM TO BE SOLVED: To smoothly discharge drain generated in a plurality of heat exchangers equipped in a moisture separating heater of a steam turbine plant, into a drain tank. <P>SOLUTION: The moisture separating heater 10 is equipped with the plurality of heat exchangers 11A and 11B. Drain pipes 12A and 12B from the heat exchangers 11A and 11B are connected to a common drain tank 20. The heat exchangers 11A and 11B are individually connected to the drain tank 20 by balance pipes 13A and 13B. The space above drain water level inside the drain tank 20 is connected to a bleed air heater 3 having a lower inner pressure than that of the drain tank 20 by a communicating pipe 24. The communicating pipe 24 is provided with an opening/closing valve 25. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は蒸気タービンプラントの湿分分離加熱器のドレン処理装置に関する。   The present invention relates to a drain treatment apparatus for a moisture separation heater of a steam turbine plant.

蒸気タービンプラントでは、高圧タービンを回転させるのに使用した駆動蒸気を低圧タービンを回転させるのに再使用する際、駆動蒸気中の凝結水分を分離除去し、及び駆動蒸気を加熱するために、湿分分離加熱器が用いられる。湿分分離加熱器の設置例を特許文献１、２に見ることができる。
特開昭６３−２６６１０４号公報 特開２０００−２８７８７号公報 In a steam turbine plant, when the driving steam used to rotate the high-pressure turbine is reused to rotate the low-pressure turbine, the condensed moisture in the driving steam is separated and removed in order to heat the driving steam. A fractional heater is used. Examples of installation of a moisture separation heater can be found in Patent Documents 1 and 2.
JP 63-266104 A JP 2000-28787 A

湿分分離加熱器は、駆動蒸気を加熱するための熱交換器を複数備える。これらの熱交換器で発生するドレンは共通のドレンタンクに排出されるが、排出圧が静水頭であるため、ドレンにフラッシュ現象が発生したりすると排出が阻害されることがあった。   The moisture separator heater includes a plurality of heat exchangers for heating the driving steam. Drains generated in these heat exchangers are discharged to a common drain tank. However, since the discharge pressure is a hydrostatic head, discharge may be hindered if a flush phenomenon occurs in the drain.

本発明は上記の点に鑑みなされたものであり、湿分分離加熱器に備えられた複数の熱交換器で発生するドレンがスムーズにドレンタンクに排出されるようにすることを目的とする。   This invention is made | formed in view of said point, and it aims at making it the drain which generate | occur | produces with the several heat exchanger with which the moisture separation heater was equipped be discharged | emitted smoothly to a drain tank.

（１）上記目的を達成するために本発明は、蒸気タービンプラントの湿分分離加熱器のドレン処理装置が、湿分分離加熱器に備えられた複数の熱交換器からのドレンを共通のドレンタンクに受けさせるとともに、前記複数の熱交換器とドレンタンクとの間に個別にバランス管を設けたものであることを特徴としている。   (1) To achieve the above object, according to the present invention, a drain treatment apparatus for a moisture separation heater of a steam turbine plant uses a common drain as a drain from a plurality of heat exchangers provided in the moisture separation heater. The tank is received and a balance pipe is individually provided between the plurality of heat exchangers and the drain tank.

この構成によると、複数の熱交換器のそれぞれとドレンタンクとの間で圧力のバランスがとられ、各熱交換器からドレンをスムーズに排出させることができる。   According to this configuration, the pressure is balanced between each of the plurality of heat exchangers and the drain tank, and the drain can be smoothly discharged from each heat exchanger.

（２）また本発明は、上記構成の湿分分離加熱器のドレン処理装置において、前記ドレンタンク内部の、ドレン水位以上の空間を、当該ドレンタンクより内圧の低い蒸気タービンプラント構成要素に連通管で接続したことを特徴としている。   (2) Further, according to the present invention, in the drain treatment device of the moisture separator / heater having the above-described configuration, a space above the drain water level in the drain tank is connected to a steam turbine plant component having a lower internal pressure than the drain tank. It is characterized by being connected with.

この構成によると、ドレンタンクの内部空間が通常よりも低圧になるので、熱交換器のドレンには単なる静水頭以上の力がかかり、スムーズに排出される。   According to this configuration, since the internal space of the drain tank has a lower pressure than usual, the drain of the heat exchanger is applied with a force more than a mere hydrostatic head and is smoothly discharged.

（３）また本発明は、上記構成の湿分分離加熱器のドレン処理装置において、前記連通管に開閉弁を設けたことを特徴としている。   (3) Further, the present invention is characterized in that in the drain treatment apparatus for a moisture separator / heater having the above-described configuration, an open / close valve is provided in the communication pipe.

この構成によると、必要が生じたときのみドレンタンクの内部空間を通常よりも低圧にすることができる。   According to this configuration, the internal space of the drain tank can be set to a lower pressure than usual only when necessary.

本発明によると、湿分分離加熱器に備えられた複数の熱交換器のそれぞれからドレンがスムーズに排出されるので、湿分分離加熱器を高効率で稼動させ続けることができる。   According to the present invention, since the drain is smoothly discharged from each of the plurality of heat exchangers provided in the moisture separation heater, the moisture separation heater can be continuously operated with high efficiency.

本発明の実施形態を図１に基づき説明する。図１は湿分分離加熱器のドレン処理装置の概略構成図である。   An embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic configuration diagram of a drain treatment apparatus of a moisture separation heater.

湿分分離加熱器１０は蒸気タービンプラントの高圧タービン１から低圧タービン２への連絡配管の途中に設けられるものであり、駆動蒸気を加熱するための熱交換器を複数備える。図では２個の熱交換器、すなわち熱交換器１１Ａと熱交換器１１Ｂが設けられているが、その数に制限はない。熱交換器１１Ａからのドレン管１２Ａと熱交換器１１Ｂからのドレン管１２Ｂは共通のドレンタンク２０に入る。ドレンタンク２０は密閉式である。ドレン管１２Ａ、１２Ｂの先端はいずれもドレンタンク２０内のドレン２１に水没する。熱交換器１１Ａとドレンタンク２０の間にはバランス管１３Ａが設けられ、熱交換器１１Ｂとドレンタンク２０の間にはバランス管１３Ｂが設けられている。   The moisture separator / heater 10 is provided in the middle of the connecting pipe from the high pressure turbine 1 to the low pressure turbine 2 of the steam turbine plant, and includes a plurality of heat exchangers for heating the driving steam. In the figure, two heat exchangers, that is, a heat exchanger 11A and a heat exchanger 11B are provided, but the number is not limited. The drain pipe 12A from the heat exchanger 11A and the drain pipe 12B from the heat exchanger 11B enter a common drain tank 20. The drain tank 20 is a sealed type. Both ends of the drain pipes 12 </ b> A and 12 </ b> B are submerged in the drain 21 in the drain tank 20. A balance pipe 13A is provided between the heat exchanger 11A and the drain tank 20, and a balance pipe 13B is provided between the heat exchanger 11B and the drain tank 20.

ドレンタンク１０の下部には排水管２２が接続されている。排水は静水頭によって行われる。排水管２２の途中には流量調整バルブ２３が配置されている。   A drain pipe 22 is connected to the lower part of the drain tank 10. Drainage is performed by a hydrostatic head. A flow rate adjusting valve 23 is disposed in the middle of the drain pipe 22.

ドレンタンク２０の内部の、ドレン２１の水位以上の空間は、ドレンタンク２０より内圧の低い蒸気タービンプラント構成要素に連通管２４で接続される。この実施形態では、目的に適う構成要素として高圧タービン１の抽気加熱器３が選択されている。連通管２４には開閉バルブ２５が設けられている。   A space above the water level of the drain 21 inside the drain tank 20 is connected to a steam turbine plant component having an internal pressure lower than that of the drain tank 20 through a communication pipe 24. In this embodiment, the extraction heater 3 of the high-pressure turbine 1 is selected as a component suitable for the purpose. An open / close valve 25 is provided in the communication pipe 24.

熱交換器１１Ａ、１１Ｂで発生したドレンは、熱交換器１１Ａ、１１Ｂが個別にバランス管１３Ａ、１３Ｂでドレンタンク２０に接続され、圧力バランスが図られているので、スムーズにドレンタンク２０に排出される。それでも排出が滞った場合は、開閉バルブ２５を開く。するとドレンタンク２０の内部空間が通常よりも低圧になるのでドレンの滞りは解消され、ドレンはスムーズにドレンタンク２０に流れ込む。   The drains generated in the heat exchangers 11A and 11B are discharged to the drain tank 20 smoothly because the heat exchangers 11A and 11B are individually connected to the drain tank 20 by the balance pipes 13A and 13B and the pressure balance is achieved. Is done. If the discharge is still delayed, the opening / closing valve 25 is opened. Then, since the internal space of the drain tank 20 has a lower pressure than usual, the stagnation of the drain is eliminated, and the drain smoothly flows into the drain tank 20.

以上本発明の実施形態につき説明したが、この他、発明の主旨を逸脱しない範囲で種々の変更を加えて実施することができる。   Although the embodiments of the present invention have been described above, various modifications can be made without departing from the spirit of the present invention.

本発明は蒸気タービンプラントの湿分分離加熱器のドレン処理装置に広く利用可能である。     The present invention can be widely used in a drain treatment apparatus for a moisture separation heater of a steam turbine plant.

湿分分離加熱器のドレン処理装置の概略構成図Schematic configuration diagram of drain treatment device for moisture separator heater

符号の説明Explanation of symbols

１ 高圧タービン
２ 低圧タービン
３ 抽気加熱器
１０ 湿分分離加熱器
１１Ａ、１１Ｂ 熱交換器
１２Ａ、１２Ｂ ドレン管
１３Ａ、１３Ｂ バランス管
２０ ドレンタンク
２４ 連通管
２５ 開閉バルブ DESCRIPTION OF SYMBOLS 1 High pressure turbine 2 Low pressure turbine 3 Extraction heater 10 Moisture separation heater 11A, 11B Heat exchanger 12A, 12B Drain pipe 13A, 13B Balance pipe 20 Drain tank 24 Communication pipe 25 Open / close valve

Claims (3)

蒸気タービンプラントの湿分分離加熱器に備えられた複数の熱交換器からのドレンを共通のドレンタンクに受けさせるとともに、前記複数の熱交換器とドレンタンクとの間に個別にバランス管を設けたことを特徴とする湿分分離加熱器のドレン処理装置。   The drain from the plurality of heat exchangers provided in the moisture separation heater of the steam turbine plant is received by a common drain tank, and a separate balance pipe is provided between the plurality of heat exchangers and the drain tank. A drain treatment apparatus for a moisture separator and heater. 前記ドレンタンク内部の、ドレン水位以上の空間を、当該ドレンタンクより内圧の低い蒸気タービンプラント構成要素に連通管で接続したことを特徴とする請求項１に記載の湿分分離加熱器のドレン処理装置。   The drain treatment of the moisture separation heater according to claim 1, wherein a space above the drain water level in the drain tank is connected to a steam turbine plant component having an internal pressure lower than that of the drain tank through a communication pipe. apparatus. 前記連通管に開閉弁を設けたことを特徴とする請求項２に記載の湿分分離加熱器のドレン処理装置。   The drain treatment apparatus for a moisture separator / heater according to claim 2, wherein an open / close valve is provided in the communication pipe.
JP2007006777A 2007-01-16 2007-01-16 Drain treatment device of moisture separating heater Pending JP2008175072A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010121911A (en) * 2008-11-21 2010-06-03 Toshiba Corp Moisture separation heater
JP2010203654A (en) * 2009-03-02 2010-09-16 Tlv Co Ltd Drain treatment system
US8198693B2 (en) 2009-02-25 2012-06-12 Sony Corporation Solid-state image pickup apparatus and production method thereof
JP2014041829A (en) * 2009-07-08 2014-03-06 Panasonic Corp Fuel cell system
EP2947385A4 (en) * 2013-01-17 2016-11-16 Mitsubishi Hitachi Power Sys Moisture separating and heating device and moisture separating and heating facility with same
CN110159369A (en) * 2019-05-21 2019-08-23 东北电力大学 A kind of Thermal generation unit energy efficient utilizes system

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JPS55129796A (en) * 1979-03-30 1980-10-07 Mitsubishi Heavy Ind Ltd Method of processing reheater drain of atomic power turbine
JPS582403A (en) * 1981-06-26 1983-01-08 Hitachi Ltd Control method and its equipment of steam separating reheater
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JPS6017607A (en) * 1983-07-08 1985-01-29 株式会社日立製作所 Reheater
JPS63266104A (en) * 1987-04-23 1988-11-02 Hitachi Ltd Reheater drain system
JPH09195713A (en) * 1996-01-16 1997-07-29 Hitachi Ltd Moisture content separation heater
JP2002206873A (en) * 2001-01-11 2002-07-26 Mitsubishi Heavy Ind Ltd Vacuum detecting pipe system for condenser
JP2004012264A (en) * 2002-06-06 2004-01-15 Toshiba Corp Facility for recovering condensed water in in-plant steam system of nuclear power plant

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55129796A (en) * 1979-03-30 1980-10-07 Mitsubishi Heavy Ind Ltd Method of processing reheater drain of atomic power turbine
JPS59181907U (en) * 1979-12-27 1984-12-04 ウエスチングハウス　エレクトリック　コ−ポレ−ション flow control device
JPS582403A (en) * 1981-06-26 1983-01-08 Hitachi Ltd Control method and its equipment of steam separating reheater
JPS59185904A (en) * 1983-04-07 1984-10-22 株式会社日立製作所 Steam separating reheater and method of controlling said steam separating reheater
JPS6017607A (en) * 1983-07-08 1985-01-29 株式会社日立製作所 Reheater
JPS63266104A (en) * 1987-04-23 1988-11-02 Hitachi Ltd Reheater drain system
JPH09195713A (en) * 1996-01-16 1997-07-29 Hitachi Ltd Moisture content separation heater
JP2002206873A (en) * 2001-01-11 2002-07-26 Mitsubishi Heavy Ind Ltd Vacuum detecting pipe system for condenser
JP2004012264A (en) * 2002-06-06 2004-01-15 Toshiba Corp Facility for recovering condensed water in in-plant steam system of nuclear power plant

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010121911A (en) * 2008-11-21 2010-06-03 Toshiba Corp Moisture separation heater
US8198693B2 (en) 2009-02-25 2012-06-12 Sony Corporation Solid-state image pickup apparatus and production method thereof
JP2010203654A (en) * 2009-03-02 2010-09-16 Tlv Co Ltd Drain treatment system
JP4681060B2 (en) * 2009-03-02 2011-05-11 株式会社テイエルブイ Drain treatment device
EP2392849A1 (en) * 2009-03-02 2011-12-07 TLV Co., Ltd. Drain treatment system
US8408236B2 (en) 2009-03-02 2013-04-02 Tlv Co., Ltd. Drain treatment system
JP2014041829A (en) * 2009-07-08 2014-03-06 Panasonic Corp Fuel cell system
US8962199B2 (en) 2009-07-08 2015-02-24 Panasonic Intellectual Property Management Co., Ltd. Fuel cell system
EP2947385A4 (en) * 2013-01-17 2016-11-16 Mitsubishi Hitachi Power Sys Moisture separating and heating device and moisture separating and heating facility with same
CN110159369A (en) * 2019-05-21 2019-08-23 东北电力大学 A kind of Thermal generation unit energy efficient utilizes system

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