Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Heavy Industries Limited

Mitsubishi Power, Ltd.

Shuhei Kajimura

Shinji Akamatsu

Keijiro Saito

Satoshi Takiguchi

Kotaro Miyauchi

Kenji Miyamoto

Koichi Nishida

Kenta Taniguchi

Sosuke Nakamura

Kei Inoue

Naoki Abe

Taiki Kinoshita

Mitsuhiro Nakao

A combustor () includes: a fuel nozzle configured to inject fuel; a tubular body () having a tubular shape in which a combustion region through which combustion gas flows is formed inside, and in which a plurality of slits () are formed extending in the circumferential direction at intervals in the circumferential direction; and throttle pieces () which are fitted into the slits (), project radially inward from the inner circumferential side of the tubular body (), and have a throttle face that extends along the flow direction of the combustion gas as it extends from the radially outer side inward.

Combustor and method for improving combustor performance

To provide a gas turbine combustor that can suppress a generation amount of NOx and maintain a flame holding property, while suppressing burn damage around a pilot nozzle including the pilot nozzle. A gas turbine combustor includes a pilot nozzle that can inject fuel F and cooling air A for cooling a nozzle tip, a flow regulating valve that can adjust a flow rate of cooling air to be supplied to the pilot nozzle, a detection sensor that detects a combustion state of fuel, and a control device that controls the flow regulating valve based on a detection result of the detection sensor.

Gas turbine combustor, gas turbine, control device, and control method

A fuel spray nozzle provided with: a liquid fuel channel (), which is a channel for liquid fuel; a liquid fuel injection hole (), which is a hole for communicating the liquid fuel channel () and the inside of a combustion burner, and injecting the liquid fuel into the combustion burner; an additive channel (), which is a channel for an additive; and an additive injection hole (), which is a hole for communicating the additive channel () and the inside of the combustion burner, and injecting the additive into the combustion burner at an angle at which the additive collides with the liquid fuel injected from the liquid fuel injection hole ().

Fuel spray nozzle

A pilot nozzle, a gas turbine combustor and a gas turbine are provided with a nozzle main body having a fuel passage, a cover ring arranged at an outside of a front end-outer peripheral portion of the nozzle main body at a predetermined interval to form an inner air passage and capable of injecting air toward a front side of the nozzle main body, a plurality of nozzle tips that includes a fuel injection nozzle attached to a front end portion of the cover ring at a predetermined interval in a circumferential direction to communicate with the fuel passage and is able to inject fuel toward an outside of injection air from the inner air passage, and a swirling force application unit that applies a swirling force to air injected through the inner air passage.

Nozzle, and gas turbine combustor having the nozzle

Growing community of inventors

Tokyo, Japan

Shuhei Kajimura