公开(公告)号：US10107144B2

公开(公告)日：2018-10-23

申请号：US15198302

申请日：2016-06-30

申请人： Mitsubishi Hitachi Power Systems, Ltd.

发明人： Hidefumi Araki ,  Kazuhiko Sato ,  Yasushi Iwai

IPC分类号： F02C3/30 ,  F02C6/18 ,  F01K23/10 ,  F01K21/04 ,  C02F1/00 ,  C02F1/20 ,  C02F1/42 ,  C02F1/44 ,  C02F1/66 ,  C02F9/00 ,  F01K11/02 ,  C02F103/34

摘要： A thermal power plant for recovering water from exhaust gas includes a gas turbine, a heat recovery steam generator for generating steam by supplying exhaust combustion gas exhausted from the gas turbine as heat source, a water recovery system installed on the downstream side of the heat recovery steam generator, a recovered water system for supplying a part of the water recovered by the water recovery system, allowing the water to be circulating as circulating water, a feed water system for supplying the heat recovery steam generator with other part of the water recovered by the water recovery system as feed water, pH adjusting systems, and a control system for controlling the volumes of pH adjusters supplied from the first and second pH adjusting systems.

公开(公告)号：US20180223737A1

公开(公告)日：2018-08-09

申请号：US15882263

申请日：2018-01-29

申请人： Mitsubishi Hitachi Power Systems, Ltd.

发明人： Yasushi Iwai ,  Hidefumi Araki ,  Takuya Takeda

IPC分类号： F02C7/26 ,  F02C3/04 ,  F01D17/08 ,  F02C7/232 ,  F02C9/28 ,  F02C7/10

CPC分类号： F02C7/26 ,  F01D17/085 ,  F02C3/04 ,  F02C3/305 ,  F02C7/10 ,  F02C7/232 ,  F02C9/263 ,  F02C9/28 ,  F05D2260/85 ,  F05D2270/112 ,  F05D2270/20 ,  F05D2270/3015 ,  F05D2270/303 ,  F05D2270/3032 ,  F05D2270/306

摘要： The invention aims to shorten the time required for start-up and prevent excessive increases in the heat loads on turbine blades. A humid air turbine includes a compressor; a combustor; a turbine; an exhaust heat recovery unit for recovering the heat of turbine exhaust gas to generate high-temperature moisture; a fuel supply system having a fuel flow rate control valve; an exhaust temperature acquiring unit for acquiring a temperature of the exhaust discharged while the turbine is driven; a combustion gas moisture ratio calculating section for calculating a ratio of moisture contained in combustion gas; an exhaust temperature upper limit calculating section for setting an exhaust temperature upper limit based on the combustion gas moisture ratio and the pressure ratio; an exhaust temperature difference calculating section for calculating the difference between the exhaust temperature upper limit and the exhaust temperature; a fuel flow rate command value calculating section for calculating a fuel flow rate command value using the exhaust temperature difference; and a control command value output section for outputting a command signal to the fuel flow rate control valve based on the command value selected by a fuel flow rate command value selecting section.