Hitachi, Ltd.

Hitchi, Ltd.

Nobuhiro Isobe

Hajime Toriya

Yasushi Hayasaka

Kunihiro Ichikawa

Shigeo Sakurai

Shuuhei Nogami

A steam turbine blade includes a blade; a shroud attached to a tip of the blade; a blade root projecting toward the radial inner circumferential side of a turbine rotor so as to be fitted into a blade groove provided in an outer circumferential portion of a turbine rotor; and a platform disposed between the blade and the blade root. The blade root is inserted into the blade groove along the axial direction of the turbine rotor. The blade, the shroud, the blade root and the platform are integrally molded. The number of the blade roots is larger than that of the blades.

Steam turbine blade, and steam turbine and steam turbine power plant using the blade

A life management system for high-temperature parts of a gas turbine has one server system and a plurality of client systems , and , all of which are connected via an Intranet. Further, the server system manages a program for performing evaluation of the remaining life and the life management, and each of the client systems , and has a subprogram for accessing the database and for entering data respectively. The clients are dedicated to different objects and share respective element data such as real component damage, design, materials, etc. which are necessary for the evaluation of the remaining life. Further, this system enables the operation of the gas turbine to be optimized based on the damage of the evaluated parts, hence contributing to operational cost reduction of the gas turbine.

Service life management system for high-temperature part of gas turbine

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Hitachi, Japan

Nobuhiro Isobe