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Feed water heater and power plant using the feed water heater
Feed water heater and power plant using the feed water heater
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机译：给水加热器和使用该给水加热器的发电厂
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摘要
PURPOSE:To improve a heat transferring amount of an entire feedwater heater by a method wherein some steam flowing holes are arranged between a group of holes through which heat transfer tubes of a group of heat transfer tubes on the feedwater inlet side and a group of holes through which the heat transfer tubes of a group of heat transfer tubes on a feedwater outlet side pass in a supporting plate of the heat transfer pipes. CONSTITUTION:There are provided a group of U-shaped heat transfer tubes comprising a group 8 of water feeding inlet side heat transfer tubes 8 and a group 7 of water feeding outlet side heat transfer tubes constructed by a plurality of heat transfer tubes having fed water flowed through them; a cylindrical barrel 2 for storing them; and a steam inlet for heating the fed water flowing in clearances between a plurality of heat transfer tubes. In addition, a heat transfer tube supporting plate 3 is present within the barrel 2, fixed to the barrel 2, wherein each of a plurality of heat transfer tubes is passed through the through-pass holes 4 and 5 punched in the plate 3 and thereby the group of U-shaped heat transfer tubes is supported by the barrel 2. Such a feedwater heater 1 is provided with steam flowing holes 12 between a group 4 of holes through which a plurality of heat transfer tubes of a group 6 of the feedwater inlet side heat transfer tubes and a group 5 of holes through which a plurality of heat transfer tubes of a group 7 of the feedwater outlet side heat transfer tubes pass in the heat transfer tube supporting plate 3.
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