JP5367384B2 - Condensate recovery device - Google Patents

Condensate recovery device Download PDF

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JP5367384B2
JP5367384B2 JP2009006576A JP2009006576A JP5367384B2 JP 5367384 B2 JP5367384 B2 JP 5367384B2 JP 2009006576 A JP2009006576 A JP 2009006576A JP 2009006576 A JP2009006576 A JP 2009006576A JP 5367384 B2 JP5367384 B2 JP 5367384B2
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condensate
pump
temperature
steam
pipe
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JP2010164234A (en
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雅克 岡本
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株式会社テイエルブイ
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a condensate returning device for surely returning condensate to an economizer and a boiler even when a temperature of the condensate is high. <P>SOLUTION: A condensate supply pipe 1 is connected to a condensate storage container 2. A condensate return pump 4 is connected to a lower part of the condensate storage container 2. The condensate return pump 4 is composed of an ejector 10 and a circulation pump 11. A part of a circulation pathway 12 of the condensate return pump 4 is branched and connected to a condensate return pipe 13. The condensate return pipe 13 is connected to the economizer 14. The condensate of high temperature in the condensate storage container 2 is sucked to the ejector 10 of the condensate return pump 4, so that a part of the condensate of high temperature is supplied to the economizer 14 from the condensate return pipe 13, and exchanges heat with a combustion gas of high temperature generated in a steam boiler 15. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、蒸気使用機器で発生した蒸気の凝縮水としての復水を、ボイラー等の復水回収先へ回収する復水回収装置に関する。  The present invention relates to a condensate recovery apparatus that recovers condensate as condensate of steam generated in a steam-using device to a condensate recovery destination such as a boiler.
従来の復水回収装置は、ドレン(復水)回収装置14から給水タンク2へ流入した所定温度の復水を、給水ポンプ7によって節炭器9を介してボイラー1へ回収することができるものである。  The conventional condensate recovery device is capable of recovering the condensate at a predetermined temperature flowing from the drain (condensate) recovery device 14 into the feed water tank 2 to the boiler 1 by the feed water pump 7 via the economizer 9. It is.
上記従来の復水回収装置では、給水ポンプ7によって所定温度以上、例えば、80℃以上、の高温復水を回収することができない問題があった。これは、通常の給水ポンプでは、80℃以上程度の高温復水が流入すると、ポンプ内部で一部の高温復水が再蒸発して蒸気となったものが、押しつぶされることにより、バリバリという激しい振動を発生して、著しい場合は給水ポンプを破損してしまうためである。 The conventional condensate recovery apparatus has a problem that high-temperature condensate at a predetermined temperature or higher, for example, 80 ° C. or higher cannot be recovered by the feed pump 7. This is because when a high-temperature condensate of about 80 ° C. or more flows in a normal water supply pump, a part of the high-temperature condensate is re-evaporated into steam and is crushed and crushed. This is because vibration is generated and the water supply pump is damaged in a remarkable case.
特開2000−121003号公報JP 2000-121033 A
解決しようとする問題点は、復水の温度が高温の場合であっても、確実に節炭器、及び、ボイラーへ復水を回収することのできる復水回収装置を得ることである。   The problem to be solved is to obtain a condensate recovery device that can reliably recover condensate to a economizer and boiler even when the temperature of the condensate is high.
本発明は、蒸気使用機器で蒸気が凝縮して発生した復水を、復水回収ポンプによって節炭器を介してボイラーへ回収するものにおいて、復水供給管と接続した復水溜め容器を配置して、当該復水溜め容器に再蒸発蒸気排出管を取り付けて混合タンクと接続し、当該混合タンクに冷却水供給管を接続して内部に冷却水を溜め置き、前記再蒸発蒸気排出管の下端部に再蒸発蒸気の噴射ノズルを取り付けて冷却水内へ延設し、前記混合タンク及び前記復水溜め容器のそれぞれを管路によって復水回収ポンプに接続すると共に、当該復水回収ポンプをエゼクタと循環ポンプで形成したものである。 The present invention recovers condensate generated by condensing steam in a steam-using device to a boiler via a conserving unit by means of a condensate recovery pump, and a condensate reservoir connected to a condensate supply pipe is disposed. Then, a re-evaporation vapor discharge pipe is attached to the condensate reservoir and connected to the mixing tank, a cooling water supply pipe is connected to the mixing tank and cooling water is stored inside, and the re-evaporation vapor discharge pipe is A re-evaporated vapor injection nozzle is attached to the lower end portion and extends into the cooling water, and each of the mixing tank and the condensate reservoir is connected to a condensate recovery pump by a pipe line. It is formed by an ejector and a circulation pump.
本発明は、復水回収ポンプをエゼクタと循環ポンプで形成したことによって、高温の復水が再蒸発することもなく、バリバリという激しい振動を発生することがないために、高温の復水であっても確実に節炭器、及び、ボイラーへ回収することができるという利点がある。   The present invention is a high-temperature condensate because the condensate recovery pump is formed of an ejector and a circulation pump, so that the high-temperature condensate does not re-evaporate and vigorous vibrations are not generated. However, there is an advantage that it can be reliably recovered to a economizer and a boiler.
本発明に係る復水回収装置の実施例を示す構成図である。It is a block diagram which shows the Example of the condensate collection | recovery apparatus which concerns on this invention.
本発明は、復水回収ポンプをエゼクタと循環ポンプで形成するものであるが、エゼクタと循環ポンプの組み合わせは、発生する復水の量や温度に応じて、1台に限らず、複数台を直列に、あるいは、並列に配置して用いることができる。   In the present invention, the condensate recovery pump is formed by an ejector and a circulation pump, but the combination of the ejector and the circulation pump is not limited to one, depending on the amount and temperature of the generated condensate, and a plurality of the condensate recovery pumps. They can be used in series or in parallel.
図1において、復水供給管1と、復水溜め容器2、及び、復水回収ポンプ4とで復水回収装置を構成する。   In FIG. 1, the condensate supply pipe 1, the condensate reservoir 2, and the condensate recovery pump 4 constitute a condensate recovery device.
復水供給管1は、右端部を図示しない蒸気使用機器などの高温復水発生源と接続し、他端部を復水溜め容器2の上部と接続する。 The condensate supply pipe 1 has a right end connected to a high-temperature condensate generation source such as a steam using device (not shown) and the other end connected to the upper part of the condensate reservoir 2.
復水溜め容器2は、縦長の円筒状タンクであり、流入してきた高温復水の一部が再蒸発して上方に溜まり、下方には復水が溜まる。復水溜め容器2の上面に再蒸発蒸気排出管8を取り付けて、下方の混合タンク3と接続する。混合タンク3には冷却水供給管5を接続して、内部に冷却水6を溜め置く。再蒸発蒸気排出管8の下端部には、再蒸発蒸気の噴射ノズル7を取り付けて、冷却水6内へ延設する。 The condensate reservoir 2 is a vertically long cylindrical tank. A part of the high-temperature condensate that has flowed in is re-evaporated and collected upward, and condensate is accumulated below. A re-evaporated steam discharge pipe 8 is attached to the upper surface of the condensate reservoir 2 and connected to the lower mixing tank 3. A cooling water supply pipe 5 is connected to the mixing tank 3 to store cooling water 6 therein. A re-evaporated steam injection nozzle 7 is attached to the lower end of the re-evaporated steam discharge pipe 8 and extends into the cooling water 6.
混合タンク3の下部と、復水溜め容器2の下端とを、管路9によって復水回収ポンプ4と接続する。 The lower part of the mixing tank 3 and the lower end of the condensate reservoir 2 are connected to the condensate recovery pump 4 by a conduit 9.
復水回収ポンプ4は、エゼクタ10と循環ポンプ11を循環路12で接続したもので、循環路12の一部を分岐して復水回収管13を接続する。循環ポンプ11を駆動することによって、エゼクタ10で吸引力を発生して、復水溜め容器2内の高温復水、及び、混合タンク3内の再蒸発蒸気と冷却水の混合液体を、吸引するものである。 The condensate recovery pump 4 is formed by connecting an ejector 10 and a circulation pump 11 with a circulation path 12, and a part of the circulation path 12 is branched to connect a condensate recovery pipe 13. By driving the circulation pump 11, suction force is generated in the ejector 10, and the high-temperature condensate in the condensate reservoir 2 and the mixed liquid of re-evaporated steam and cooling water in the mixing tank 3 are sucked. Is.
復水回収管13の上端を、節炭器14と接続する。節炭器14の内部に復水回収管13がコイル状に配置され、復水回収管13の下端部を蒸気ボイラー15の給水口16と接続する。節炭器14では、蒸気ボイラー15で発生した燃焼ガスと復水回収管13内の液体とが熱交換されて、温度上昇した液体がボイラー15へ供給水として供給されるものである。蒸気ボイラー15で発生した高温蒸気は、上方の蒸気ヘッダー管17と蒸気供給管18から、図示しない蒸気使用機器へ供給される。 The upper end of the condensate recovery pipe 13 is connected to the economizer 14. A condensate recovery pipe 13 is arranged in a coil shape inside the economizer 14, and a lower end portion of the condensate recovery pipe 13 is connected to a water supply port 16 of the steam boiler 15. In the economizer 14, the combustion gas generated in the steam boiler 15 and the liquid in the condensate recovery pipe 13 are heat-exchanged, and the liquid whose temperature has increased is supplied to the boiler 15 as supply water. The high-temperature steam generated in the steam boiler 15 is supplied from an upper steam header pipe 17 and a steam supply pipe 18 to a steam using device (not shown).
混合タンク3とエゼクタ10の間に、一方方向のみの流体を通過させることのできる逆止弁19を取り付ける。この逆止弁19は、混合タンク3からエゼクタ10側へのみ流体を通過させるもので、反対方向への流体の通過は自動的に阻止するものである。この逆止弁19を取り付けたことによって、エゼクタ10には復水溜め容器2に溜まっている高温復水が優先的に吸引される。 Between the mixing tank 3 and the ejector 10, a check valve 19 capable of passing a fluid in only one direction is attached. The check valve 19 allows the fluid to pass only from the mixing tank 3 to the ejector 10 side, and automatically blocks the passage of the fluid in the opposite direction. By attaching the check valve 19, the ejector 10 preferentially sucks the high-temperature condensate accumulated in the condensate reservoir 2.
復水溜め容器2の高温復水が、エゼクタ10と循環ポンプ11で構成される復水回収ポンプ4へ吸引されることによって、ポンプ4でバリバリという激しい振動を発生することなく、節炭器14、及び、蒸気ボイラー15へと回収される。 The high temperature condensate in the condensate reservoir 2 is sucked into the condensate recovery pump 4 composed of the ejector 10 and the circulation pump 11, so that the pump 4 does not generate a violent vibration such as a burr. And recovered into the steam boiler 15.
発生する復水の温度が比較的高温の場合の復水回収装置として適用できる。   It can be applied as a condensate recovery device when the temperature of the condensate generated is relatively high.
1 復水供給管
2 復水溜め容器
3 混合タンク
4 復水回収ポンプ
5 冷却水供給管
10 エゼクタ
11 循環ポンプ
12 循環路
13 復水回収管
14 節炭器
15 蒸気ボイラー
DESCRIPTION OF SYMBOLS 1 Condensate supply pipe 2 Condensate reservoir 3 Mixing tank 4 Condensate recovery pump 5 Cooling water supply pipe 10 Ejector 11 Circulation pump 12 Circulation path 13 Condensate recovery pipe 14 Conservator 15 Steam boiler

Claims (1)

  1. 蒸気使用機器で蒸気が凝縮して発生した復水を、復水回収ポンプによって節炭器を介してボイラーへ回収するものにおいて、復水供給管と接続した復水溜め容器を配置して、当該復水溜め容器に再蒸発蒸気排出管を取り付けて混合タンクと接続し、当該混合タンクに冷却水供給管を接続して内部に冷却水を溜め置き、前記再蒸発蒸気排出管の下端部に再蒸発蒸気の噴射ノズルを取り付けて冷却水内へ延設し、前記混合タンク及び前記復水溜め容器のそれぞれを管路によって復水回収ポンプに接続すると共に、当該復水回収ポンプをエゼクタと循環ポンプで形成したことを特徴とする復水回収装置。 Condensate generated by condensing steam in equipment using steam is recovered to the boiler via a conserving unit using a condensate recovery pump, and a condensate reservoir connected to the condensate supply pipe is placed, A re-evaporation vapor discharge pipe is attached to the condensate reservoir and connected to the mixing tank, and a cooling water supply pipe is connected to the mixing tank to store cooling water therein, and the re-evaporation vapor discharge pipe is re-applied to the lower end of the re-evaporation vapor discharge pipe. An evaporating vapor injection nozzle is attached and extended into the cooling water, and each of the mixing tank and the condensate reservoir is connected to a condensate recovery pump by a conduit, and the condensate recovery pump is connected to an ejector and a circulation pump. A condensate recovery device characterized by being formed in
JP2009006576A 2009-01-15 2009-01-15 Condensate recovery device Active JP5367384B2 (en)

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WO2015170564A1 (en) 2014-05-09 2015-11-12 株式会社テイエルブイ Drain recovery device

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JPH06129605A (en) * 1992-10-15 1994-05-13 Tlv Co Ltd Condensate recoverying device
JP3725221B2 (en) * 1995-10-13 2005-12-07 株式会社テイエルブイ Condensate recovery device
JP3806458B2 (en) * 1995-11-15 2006-08-09 株式会社テイエルブイ Low pressure steam heating device using heat medium
JPH09196305A (en) * 1996-01-12 1997-07-29 Tlv Co Ltd Condensation recovery device
JP2002256816A (en) * 2001-02-26 2002-09-11 Toshiba Corp Combined cycle generating plant

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