Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Ken Ugai

Ryo Higashi

Teruhiro Matsumoto

Yosuke Eto

Yoshikiyo Okamoto

Takeo Hirasaki

A cylinder for combustion comprises a barrel having a cylindrical shape, and an air supply pipe. An insertion opening and a plurality of cooling flow paths are formed in the barrel. Collision region flow paths of the plurality of cooling flow paths each have a collision region circumvention flow path part intersecting with a collision gas axis extending in the direction of the flow of combustion gas moving toward a pipe center axis of the air supply pipe. The collision region circumvention flow path parts have an upstream-side direction component from the collision gas axis along the edge of the insertion opening, and have a downstream-side direction component from the collision gas axis along the edge of the insertion opening. No exit is formed in a portion of the collision region circumvention flow path parts within the range of specified angles about the pipe center axis.

Cylinder for combustor, combustor, and gas turbine

A consumption amount of high-calorific gas such as coke oven gas (COG) during operation of a gas turbine is reduced, halt of the gas turbine due to clogging of a pilot system, a malfunction of a compressor which compresses high-calorific gas is prevented, and reliability of the gas turbine is improved. When operation of the gas turbine () starts, with use of both a first fuel supply system () which supplies a high-calorific fuel for a first nozzle constituting a combustor (), and a second fuel supply system () which supplies a low-calorific fuel for a second nozzle constituting the combustor (), the high-calorific fuel and the low-calorific fuel are supplied to the combustor (), and at a time when the gas turbine () reaches output power which enables continuous operation with only the low-calorific fuel, supply of the high-calorific fuel to the combustor () is shut off, and only the low-calorific fuel is supplied to the combustor ().

Fuel supply system for gas turbine combustor and fuel supply method for gas turbine combustor

Growing community of inventors

Tokyo, Japan

Ken Ugai