Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Shoichi Harada

Keisuke Yamamoto

Tatsuya Iwasaki

Takashi Sonoda

Yoshifumi Iwasaki

Satoshi Tanaka

Kazuya Higashi

Kozo Toyama

Sumio Toyofuku

Kazuma Nishizawa

A solar heat turbine system includes: a compressor which compresses a working fluid, and generates a high-pressure working fluid; a solar heat receiver which heats the high-pressure working fluid with solar heat, and which generates a high-temperature working fluid; a turbine which is rotationally driven by the high-temperature working fluid; a restriction mechanism which restricts a flow of at least one of the high-pressure working fluid and the high-temperature working fluid; a rotation interlocking mechanism which rotationally drives the compressor so as to interlock with the turbine; a bleed mechanism which causes the high-pressure working fluid which is in a process of being generated in the compressor to be bled as a bled working fluid; and a system control unit which causes the bleed mechanism to execute bleeding after the restriction mechanism is caused to restrict.

Solar heat turbine system, and device and method for controlling said system

A solar thermal power generation facility is provided with turbine bypass piping () which makes some of compressed air from a compressor () bypass a turbine (), a turbine bypass valve () which adjusts the flow rate of the compressed air flowing through the turbine bypass piping (), and a control device () which controls the rotational torque of a turbine rotor () by opening the turbine bypass valve () before a rotor rotational speed reaches a rated rotational speed in a speeding-up process of the rotor rotational speed by a start-up device () and adjusting the flow rate of the compressed air that is made to bypass, by the turbine bypass valve (). The control device () instantaneously fully closes the turbine bypass valve () at the time of incorporation in which a power generator () is connected to an electric power system (S).

Solar thermal power generation facility and method of starting up same

A fuel supply apparatus is provided with a plurality of flow-rate regulating valves that regulate the flow rate of fuel flowing in a fuel supply line; a calculating section that calculates a required flow-rate coefficient on the basis of at least a fuel pressure in the fuel flow upstream of the flow-rate regulating valves, a pressure determined in advance as a fuel pressure downstream of the flow-rate regulating valves, and the flow rate of fuel to be supplied to one fuel nozzle among different kinds of fuel nozzles, the required flow-rate coefficient being the coefficient of the flow-rate regulating valve corresponding to the one fuel nozzle; and a valve control section that controls the degree-of-opening of the flow-rate regulating valve corresponding to the one fuel nozzle on the basis of the required flow-rate coefficient.

Fuel supply apparatus, fuel-flow-rate-control unit, and gas-turbine power generating plant

In a heating apparatus for heating the air sucked into a gas turbine by a heat exchanger, the temperature fluctuation of the heated air is suppressed even in the period, for which a steam source to be fed to the heat exchanger is changed. For suppression, a heat exchanger is fed with both a self-can steam, the feed rate of which is controlled by a self-can steam control valve, and the auxiliary-steam, the feed rate of which is controlled by an auxiliary-steam control valve. At starting time, the quantity of the auxiliary-steam is reduced at a constant rate, and that of the self-can steam is increased while a feedback control and a feedforward control are being made. At stopping time, the quantity of the self-can steam is reduced at a constant rate, and that of the auxiliary-steam is increased while the feedback control and the feedforward control are being made.

Apparatus for controlling intake air heating of gas turbine

A gas turbine is driven by a combustion gas produced when BFG compressed by a gas compressor and air compressed by a compressor are burned in a combustor. Steam is generated from a waste heat boiler by utilization of heat of an exhaust gas from the gas turbine, and a steam turbine is driven by this steam. An electric generator generates electricity upon driving of the turbines. A condensing heat exchanger is disposed in an air intake duct, and part of steam from the waste heat boiler flows through the heat exchanger to heat intake air. The amount of steam that flows through the heat exchanger is adjusted by adjusting the degree of opening of a steam control valve by a control device. By so doing, the ignition performance of the gas turbine in a BFG-fired gas turbine combined cycle plant is enhanced even in an extremely cold district.

Intake air heating system of combined cycle plant

Extremely cold (e.g., &#x2212;20&#xb0; C.) air A is heated by a heat exchanger, which is supplied with steam S via a control valve, and heated air A' is taken into a gas turbine. The valve opening degree of the control valveis feedback-controlled so that the deviation between the measured temperature tand the target temperature TO of the heated air A&#x2032; is eliminated. Further, when the number of revolutions, N, of the gas turbineincreases, or when an IGV opening degree OP increases, the valve opening degree of the control valveis feedforward-controlled in accordance with the increase in the number N of revolutions or the increase in the IGV opening degree OP. By so doing, the temperature of air A&#x2032; can be maintained at a temperature enabling stable combustion without delay in control, and intake air can be heated without delay in control, even at the start of the gas turbine or during change in the opening degree of an inlet guide vane.

Intake air heating control device for gas turbine

The blast furnace gas burning facility prevents a wet type dust collector from freezing under such conditions that the temperature of blast furnace gas does not exceed the freezing lower-limit temperature of the wet type dust collector. The blast furnace gas burning facilityburns blast furnace gas discharged from a blast furnace by supplying the gas to a combustorafter removing dust with a wet type dust collectorand compressing the gas with a compressor. A fuel-gas heating channelis disposed between the outlet side of the compressor and the inlet side of the wet type dust collector. When the temperature of the blast furnace gas flowing into the wet type dust collector is lower than a lower limit temperature, a high-temperature, high-pressure gas compressed by the compressor is diverged and supplied into the inlet side of the wet type dust collector.

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Takasago, Japan

Shoichi Harada