Hitachi, Ltd.

Katsutoshi Higuma

Akitaka Tateishi

Yoshifumi Kubo

Masaki Takahashi

Akio Umino

Yasuhiro Oda

Tomoaki Kamatani

Katsuhiko Tajima

In a steam turbine plant in which a turbine casing containing a turbine is constituted of an upper-half casing and a lower-half casing, nozzles are provided to the upper-half casing and a steam supplied through main steam piping lines are deliveried into the upper-half casing. Main steam pipes for supplying a steam from respective main valves to the respective nozzles are each formed so as to be dividable in a position out of the installation area of the upper-half casing.

Steam turbine

A boiler installation supporting frame structure supported by a supporting structural body and a gas turbine frame base are constituted integrally, and a gas turbine device is disposed at upper portion of the integrated type frame structure and at the lower portion thereof a boiler installation is disposed in a three dimensional structure. Thereby, through the three dimensional arrangement of the gas turbine device and the boiler installation, the power generation installation can be disposed in a limited space.

Gas turbine installation

According to the present invention, the shape of a passage in an intake-air duct communicated with the suction side of the intake-air filter is regulated so that snow is heaped up in the intake-air duct, and accordingly, the volume of snow reaching the intake-air filter is reduce in order to prevent the intake-air filter from clogging, and to prevent the flow rate of intake-air into a gas turbine from being lowered. In order to attain the above-mentioned purpose, there is provided, according to the present invention, an air-intake method for a gas turbine, in which intake-air,taken from a fresh air intake port is fed downward through a second intake-air duct in a substantially vertical direction, and then is fed in a substantially horizontal direction. Thereafter, dust is removed from the intake-air within an intake-air filter chamber, and then, is led into the gas turbine.

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Takahagi, Japan

Katsutoshi Higuma