Kabushiki Kaisha Toshiba

Toshiba Energy Systems & Solutions Corporation

Toshiba Plant Systems & Services Corporation

The Japan Steel Works, Ltd.

Tetsuya Yamanaka

Makoto Takahashi

Yuichi Nakamura

Tsutomu Shioyama

Tsutomu Ooishi

Toshihiko Endo

Daisuke Asakura

Koji Kanbe

Hiroyuki Tao

Hiroki Shiraishi

Tomoo Ohfuji

Masayuki Yamada

Osamu Watanabe

Shigeru Suzuki

Tsukasa Azuma

Kentaro Takagi

Itaru Murakami

Kenichi Okuno

Reki Takaku

Satoru Ohsaki

Koji Kajikawa

Akihiro Taniguchi

Kazuhiro Miki

Liang Yan

Joji Kaneko

Hiroryuki Nishi

Yasunori Ono

Hiroyuki Nishi

A steam turbine pipeof an embodiment includes: an upper half side main steam pipethat leads steam to a steam turbine; an upper half side main steam control valvethat intervenes in the upper half side main steam pipe; and a post-valve drain pipethat is connected to the upper half side main steam control valveand leads drain to an outside. The steam turbine pipefurther includes: a shut-off valvethat intervenes in the post-valve drain pipe; and a branching pipethat makes the post-valve drain pipeon the side closer to the upper half side main steam control valvethan is the shut-off valvecommunicate with the upper half side main steam pipebetween the upper half side main steam control valveand a high-pressure turbine

Steam turbine pipe and pipe

A low alloy steel ingot contains from 0.15 to 0.30% of C, from 0.03 to 0.2% of Si, from 0.5 to 2.0% of Mn, from 0.1 to 1.3% of Ni, from 1.5 to 3.5% of Cr, from 0.1 to 1.0% of Mo, and more than 0.15 to 0.35% of V, and optionally Ni, with a balance being Fe and unavoidable impurities. Performing quality heat treatment including a quenching step and a tempering step to the low alloy steel ingot to obtain a material, which has a grain size number of from 3 to 7 and is free from pro-eutectoid ferrite in a metallographic structure thereof, and which has a tensile strength of from 760 to 860 MPa and a fracture appearance transition temperature of not higher than 40&#xb0; C.

Low alloy steel for geothermal power generation turbine rotor, and low alloy material for geothermal power generation turbine rotor and method for manufacturing the same

A method of measuring a steam turbine according to an embodiment has: installing a measuring device into the inside of the steam turbine through an inspection hole or a manhole of the steam turbine or an inspection hole or a manhole of a condenser connected to the steam turbine, when the steam turbine is halted; and measuring a position and a dimension of an axial key or a center key of the steam turbine by using the measuring device, without opening a turbine casing of the steam turbine.

Method of measuring steam turbine, measuring device, and method of manufacturing steam turbine

Growing community of inventors

Yokohama, Japan

Tetsuya Yamanaka