Mitsubishi Hitachi Power Systems, Ltd.

Yukinori Machida

Yoshinori Tanaka

Kazuyuki Matsumoto

Yoshihiro Kuwamura

Eisaku Ito

Hiroharu Oyama

Susumu Wakazono

Koichi Ishizaka

Yasuro Sakamoto

Hidekazu Uehara

Asaharu Matsuo

A gas turbine provided with an air bleeder tube () that, during startup, bleeds a portion of the compressed air of a compressor from the compressor and discharged the bled air into a cylindrical exhaust duct (), wherein the air bleeder tube () is disposed at a portion that does not obstruct the flow of the main flow of combustion gas.

Gas turbine with an air bleeder tube

A turbine includes blades and a structure rotating relative to the blades and having a fluid flowing thereto. The turbine includes step portions that are provided in either radial tip portions of the blades or areas of the structure that face the radial tip portions; sealing fins that extend from the other of the radial tip portions of the blades or areas of the structure that face the radial tip portions toward the step portions, and form minute gaps between the sealing fins and the step portions; a flow collision surface that is provided upstream of the sealing fins in a flow direction of the fluid and against which the fluid collides; a protrusion that protrudes toward an upstream side from the flow collision surface; and a facing surface that faces the flow collision surface.

Turbine

A turbine includes an annular turbine blade body disposed on a flow path, a diaphragm outer ring installed at a tip side of the annular turbine blade body via a clearance, and seal fins formed to protrude from the diaphragm outer ring and configured to form small clearances with the annular turbine blade body, wherein dead water region-filling sections are formed in cavities in which main vortexes are generated, such that a dead water region that the main vortexes cannot reach is filled.

Steam turbine

Growing community of inventors

Tokyo, Japan

Yukinori Machida