Mitsubishi Heavy Industries Limited

Mitsubishi Power, Ltd.

Mitsubishi Hitachi Power Systems, Ltd.

Katsuyoshi Tada

Keijiro Saito

Satoshi Tanimura

Kenta Taniguchi

Kei Inoue

Keisuke Miura

Kenji Miyamoto

Shinji Akamatsu

Tomomi Koganezawa

Satoshi Takiguchi

Naoki Abe

Tomohiro Asai

Tomo Kawakami

Mitsuhiro Karishuku

Shinichi Fukuba

Naonori Nagai

A burner assembly includes a plurality of burners for mixing fuel and air. Each of the plurality of burners includes: at least one fuel nozzle for injecting the fuel; and a mixing passage into which the fuel injected from the at least one fuel nozzle and the air are introduced. Each of the at least one fuel nozzle includes a protruding portion protruding upstream of an inlet of the mixing passage in a flow direction of the air. Each of the at least one fuel nozzle includes at least one fuel injection hole formed on a side surface of the protruding portion. A top surface of the protruding portion includes a convex curved surface.

Burner assembly, gas turbine combustor, and gas turbine

A combustor includes a plurality of fuel nozzles installed so as to be extended in a direction of a nozzle axis and configured to inject fuel toward one side in the direction of the nozzle axis, a pipe plate having a plurality of air holes formed therein so as to be extended in the direction of the nozzle axis, in which the air hole has an inner diameter larger than a tip end portion of the fuel nozzle and the tip end portions are respectively inserted into the air holes, and a step surface formed at a position of the tip end portion closer to the other side in the direction of the nozzle axis than a tip end surface of the tip end portion so as to be expanded in a radial direction with respect to the nozzle axis from a tip end outer peripheral surface.

Combustor and gas turbine

A burner comprises: at least one mixing tube extending inside a fuel plenum and having an interior configured to be supplied with an air; and a plurality of fuel injection holes for injecting a fuel supplied to the fuel plenum into the interior of the at least one mixing tube. When the at least one mixing tube is viewed in an axial direction of the mixing tube, a central axis of each of the plurality of fuel injection holes is oblique in a same direction with respect to a circumferential direction of the mixing tube, to a radial direction of the mixing tube.

Burner, combustor including same, and gas turbine

A combustor includes: a casing having an air chamber filled with air; at least one mixing passage forming member forming at least one mixing passage which is connected at an inlet side to the air chamber and at an outlet side to a combustion chamber and having an inlet at the inlet side of the at least one mixing passage so as to communicate with the air chamber; and at least one fuel nozzle disposed inside the air chamber and having a fuel injection hole, positioned upstream of the inlet of the at least one mixing passage forming member, for injecting fuel downstream.

Combustor and gas turbine including the same

The present invention is a downstream plate which is provided on a downstream side of an upstream plate includes an air inlet into which cooling air is introduced from a cooling air introduction pipe and a cooling flow path which extends in a direction along a surface of the downstream plate from the air inlet so as to avoid a premix tube and through which cooling air flows.

Fuel injector, combustor, and gas turbine

A fuel injector including a fuel supply tube (), a plurality of premix tubes (), a support plate () which supports the fuel supply tube and the plurality of premix tubes, a substrate which supports downstream end portions of the plurality of premix tubes, an outer wall which is cylindrical, which forms a plenum (P) inside, a partition plate which partitions the plenum (P) into a fuel plenum (PF) and a cooling air plenum (PA), a baffle which partitions the cooling air plenum (PA) into an upstream cooling air plenum (PA) and a downstream cooling air plenum (PA) and has a plurality of cooling holes formed therein, and a cooling air supply tube configured to supply cooling air to the upstream cooling air plenum (PA), in which the end portion on the downstream side of the fuel supply tube opens in the fuel plenum (PF), and a fuel introduction hole.

Fuel injector and gas turbine

A combustion burner includes a nozzle, a swirl vane having a fuel injection hole, the swirl vane being disposed in an air flow passage of an annular shape extending along an axial direction of the nozzle around the nozzle, and a partition plate having an annular shape and partitioning at least a region of the air flow passage in a radial direction of the nozzle, so as to divide at least the region into an inner flow passage facing an outer peripheral surface of the nozzle and an outer flow passage disposed on an outer side of the inner flow passage with respect to the radial direction. The fuel injection hole is disposed in the outer flow passage of the air flow passage. An end portion on an upstream side of the partition plate is disposed upstream of the fuel injection hole in the axial direction.

Combustion burner, combustor, and gas turbine

A combustion burner includes a nozzle and a swirl vane disposed in an axial flow path extending along an axial direction of the nozzle. The swirl vane includes a tip portion for swirling gas, the gas flowing through a radially-outer region of the axial flow path, and a root portion disposed on an inner side in a radial direction of the nozzle, the root portion having a cutout on a side of a trailing edge. The radially-outer region and a radially-inner region of the axial flow path communicate with each other, at least in a range in the axial direction in which the swirl vane is disposed. The swirl vane has a pressure surface, a downstream region of the pressure surface of the root portion being defined by the cutout as a curved surface which curves in a direction opposite to the swirl direction toward the trailing edge.

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Tokyo, Japan

Katsuyoshi Tada