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1. 发明申请

WO2017033028A1 STEAM GENERATION SYSTEM AND METHOD 审中-公开
标题翻译：蒸汽发生系统和方法
公开(公告)号：WO2017033028A1
公开(公告)日：2017-03-02
申请号：PCT/GB2016/052669
申请日：2016-08-26
申请人： DOOSAN BABCOCK LIMITED
发明人： SPALDING, Douglas John , BARNARD, Malcolm , BAVANI, Vinod Kumar Singh
IPC分类号： F01K7/32 , F01K7/06 , F01K7/18 , F01K7/22
CPC分类号： F01K7/32 , F01K7/18 , F01K7/22
摘要： A steam generation system for a thermal power plant is described. The system includes a first steam generation module comprising a furnace for the combustion of a fuel and the generation of hot gases to heat water and generate steam, including a first steam superheater disposed to supply superheated steam via a first superheated steam flow conduit to at least one first high pressure turbine and a first steam reheater disposed to supply reheated steam via a firstreheated steam flow conduit to at least one first intermediate pressure turbine; a second steam generation module comprising a second hot gas volume supplied with hot gases, a bypass superheated steam flow conduit in fluid communication with the first superheated steam flow conduit disposed to supply superheated steam via a second superheater within the second hot gas volume to at least one second high pressure turbine and a return flow conduit to return steam from the at least one second high pressure turbine to the first superheated steam flow conduit downstream of the bypass superheated steam flow conduit, and a bypass reheated steam flow conduit in fluid communication with the first reheated steam flow conduit disposed to supply reheated steam via a second reheater within the second hot gas volume to at least one second intermediate pressure turbine and a return flow conduit to return steam from the at least one second intermediate pressure turbine to the first reheated steam flow conduit downstream of the bypass reheated steam flow conduit; and a selective closure system for example comprising a valve arrangement selectively to close and open a flow passage to divert flow via the respective bypass and return flow conduits. A method of steam generation for a thermal power plant embodying the same principles is also described.
摘要翻译：描述了用于火力发电厂的蒸汽发生系统。该系统包括第一蒸汽发生模块，其包括用于燃烧燃料的炉子和产生热气体以加热水并产生蒸汽，所述蒸汽包括第一蒸汽过热器，其设置成经由第一过热蒸汽流动管道至少提供过热蒸汽一个第一高压涡轮机和第一蒸汽再热器，其设置成经由第一再热蒸汽流导管向至少一个第一中间压力涡轮机提供再加热蒸汽; 第二蒸汽产生模块，包括供应有热气体的第二热气体体积，与第一过热蒸汽流动管道流体连通的旁路过热蒸汽流动管道，其设置成经由第二热气体体积内的第二过热器将过热蒸汽供应到至少一个第二高压涡轮机和一个回流管道，用于将蒸汽从至少一个第二高压涡轮机返回到旁通过热蒸汽流导管下游的第一过热蒸汽流动导管，以及与该旁路过热蒸汽流导管流体连通的旁路再加热蒸汽流导管，第一再加热蒸汽流导管，其设置成经由第二热气体体积内的第二再热器将再加热蒸汽供应到至少一个第二中间压力涡轮机和返回流动管道，以将蒸汽从所述至少一个第二中间压力涡轮机返回到第一再加热蒸汽旁路再加热蒸汽流导管下游的流动管道; 以及选择性闭合系统，其例如包括阀装置，其选择性地关闭和打开流动通道以经由相应的旁路和回流管道转移流动。还描述了体现相同原理的火力发电厂的蒸汽产生方法。

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