TH26471B - Power plants with combined cycle and steam distribution methods For cooling of that part - Google Patents

Abstract

A DC60 combined-cycle power plant comprises a gas turbine plant, a steam turbine plant connected to the gas turbine in an operational configuration, a heat recovery boiler for flue gases to generate steam for driving the steam turbine using the gas turbine's exhaust gases, evaporator units arranged within the flue gases heat recovery boiler (decomposed as evaporator one and evaporator two), and at least one superheater located between evaporator one and evaporator two, and at the end of evaporator two. The portion midway between the first and second evaporators, and the portion at the end of the second evaporator.

Claims (6)

1.Method of steam supply for cooling of mixed cycle power plants. Which consists of gas turbine plants, steam turbines First superconductor Unit of evaporator and heat conduction boiler Exhaust gas recycled Which steam for cooling is supplied from the drum of the condensing boiler. Exhaust gases are returned to the gas turbine plants. The method consists of steps of The remaining steam is supplied in the boiler that recovers flue gas heat. To the gas turbine plant in During its hot-start operation The steam connection is the exhaust that is produced from the steam turbine and the steam is produced from the boiler that leads. The flue gas heat is reused after the steam turbine begins ventilation operations and the combined steam supply to the gas turbine as a steam for cooling. Where the unit of such evaporator is divided into two evaporators. And the drum is a high-strength drum, and where the remaining steam in the high-pressure drum is supplied to the first superheater, it is supplied. Place in the middle between two divided evaporators. And the steam that is generated from the heater One superconducting is supplied to the gas turbine as a steam for cooling. 2. The method of supplying steam for cooling according to claim 1, where the superconducting heater that One of them connects the steam produced from that to the steam produced from the second superheated heater. Positioned on the top of the first superheater when supplying the steam produced to the turbine. The gas is in the form of steam for cooling. 3. The method of supplying steam for cooling according to claim 2, where the produced steam is supplied through pipes. Bypass connected to the first superheater. 4. Methods of supplying steam for cooling a combined cycle power plant consisting of gas turbine plants, steam turbines, flue gas recovery boilers including heat regulators. Extremely One, the evaporator unit is divided into two evaporators. And a tall drum where the steam for draining The hot gas is supplied from the high pressure drum of the boiler which recovers flue gas heat to the gas turbine. Through a superconducting heater, one is placed in a straight section between two evaporators, which is Connect with each other, workable The above method consists of steps Supply of steam contained in the high drum of the boiler that recovers flue gas heat to the plant. The gas turbine passes through the first superheater during its hot start-up operation. Connecting the exhaust steam generated from the steam turbine and the steam produced from the led boiler The heat of the exhaust gases is reused together after the factory. The supply of steam that is connected to the gas turbine in the form of steam for heating systems. 5. The method of cooling steam supply according to claim 4, where the superconducting heater that One of them connects the steam produced from that to the steam produced from the superconducting heater. One such one connects the steam produced from that to the steam produced from the second superheated heater. Positioned on the source of the superconducting heater first when supplying the produced steam to the plant Gas turbines are in the form of steam for cooling. 6. The method of supplying steam for cooling according to claim 5, where the produced steam is supplied through pipes. Bypass connected to the first superheater.