公开(公告)号：US20150000279A1

公开(公告)日：2015-01-01

申请号：US14488344

申请日：2014-09-17

Applicant: ALSTOM Technology Ltd

Inventor： Wolfgang Franz Dietrich MOHR ,  Hamid OLIA ,  Miguel Angel CARRILLO RUBIO ,  Juergen REINHARD

IPC: F01K13/02 ,  F01K9/00

CPC classification number: F01K13/02 ,  F01D19/00 ,  F01D21/00 ,  F01K9/003 ,  F01K9/023 ,  F01K23/10 ,  Y02E20/16

Abstract: The invention relates to a method for operating a steam power plant, particularly a combined cycle power plant, which includes a gas turbine an a steam/water cycle with a heat recovery steam generator, through which the exhaust gases of the gas turbine flow, a water-cooled condenser, a feedwater pump and a steam turbine. A cooling water pump is provided for pumping cooling water through said water-cooled condenser. Evacuating means are connected to the water-cooled condenser for evacuating at least said water-cooled condenser. The method relates to a shut down and start-up of the power plant after the shutdown. The method includes: a) shut down of the steam turbine and gas turbine and/or a combustor of said gas turbine ; b) restoration of a good vacuum within the condenser by using said evacuating means; c) stopping said cooling water pump of said water-cooled condenser and said evacuating means, and filling up at least said condenser with steam up to slightly above atmospheric pressure; d) controlling the pressure with a flow of said cooling water; e) after a certain shut-down period starting the cooling water pump just before start-up of the plant; and f) starting the plant.

Abstract translation: 本发明涉及一种用于操作蒸汽动力装置，特别是联合循环发电厂的方法，其包括燃气轮机和具有热回收蒸汽发生器的蒸汽/水循环，燃气轮机的废气通过该蒸汽发动机流动， 水冷式冷凝器，给水泵和蒸汽轮机。 提供冷却水泵，用于将冷却水泵送通过所述水冷式冷凝器。 抽出装置连接到水冷式冷凝器，用于抽空至少所述水冷式冷凝器。 该方法涉及停电后关闭和启动电厂。 该方法包括：a）关闭汽轮机和燃气轮机和/或所述燃气轮机的燃烧器; b）通过使用所述排气装置在冷凝器内恢复良好的真空; c）停止所述水冷冷凝器和所述排气装置的所述冷却水泵，并且将至少所述冷凝器充满至少略高于大气压的蒸汽; d）用所述冷却水的流动来控制压力; e）在工厂启动之前，在冷却水泵启动一定关闭时间之后; 和f）启动植物。