Ihi Corporation

Ishikawajima-harima Heavy Industries Co., Ltd.

Nagayoshi Hiromitsu

Jun Hosoi

Katsuyoshi Takahashi

Kouta Kanai

Junichi Sato

Shinji Tanaka

Hitoshi Hattori

Atsushi Fujii

Yoji Okita

Chiyuki Nakamata

Narumi Ando

Kazuo Yonekura

Mitsunori Itoh

Yuki Iwaki

Tomohiro Ide

Takehiko Watase

Shonosuke Kita

Shinichiro Ishizaki

Junya Kowa

Takeomi Ideta

Dirk Riechelmann

Tsukasa Saitou

Yuuta Matsumoto

Tomoaki Yoshida

Atsushi Hirata

Provided is a liquid fuel injection body capable of further reducing a film thickness of an injected liquid fuel. A liquid fuel injection body includes: an annular fuel passage extending in an axial direction and provided inside the liquid fuel injection body, the fuel passage is defined by a fuel passage outer wall located outward in a radial direction and a fuel passage inner wall located inward in the radial direction, a plurality of throttle passages disposed discretely in a circumferential direction are provided at a portion of the fuel passage on an upstream side with respect to a downstream end of the fuel passage, each of the throttle passages is defined by a throttle passage outer wall located outward in the radial direction and formed as a cylindrical surface, a throttle passage inner wall located inward in the radial direction, and two throttle passage side walls connecting end portions of the throttle passage outer wall and the throttle passage inner wall in the circumferential direction, and the throttle passage outer wall and the fuel passage outer wall are flush whereas the throttle passage inner wall and the fuel passage inner wall are not flush.

Liquid fuel injection body

A liquid fuel injector includes a cylindrical primary fuel injecting body having a central axis; an annular shroud concentrically placed radially outside; and an annular secondary fuel injecting body placed concentrically with the primary fuel injecting body and the shroud between the primary fuel injecting body and the shroud. A plurality of inner swirlers placed at equal intervals in a circumferential direction are provided in an annular inner air passage formed between the primary fuel injecting body and the secondary fuel injecting body, and a plurality of outer swirlers placed at equal intervals in the circumferential direction are provided in an annular outer air passage formed between the secondary fuel injecting body and the shroud. The primary fuel injecting body is formed as a pressure spray-type injector, and the secondary fuel injecting body and the inner and outer air passages cooperatively constitute an airblast-type injector.

Liquid fuel injector

A liquid fuel injector includes a cylindrical center body including a center axis, an annular shroud concentrically disposed outside the center body, an annular fuel injection body disposed between and concentrically with the center body and the shroud, and including a fuel passage formed therein, a plurality of inner swirl vanes that are arranged in an equal cycle in an inner air passage between the center body and the fuel injection body, and are provided with an inner swirl vane action surface on an upstream side, a plurality of outer swirl vanes that are arranged in an equal cycle in an outer air passage between the fuel injection body and the shroud, and an outer swirl vane action surface on the upstream side.

A thrust increasing device includes: a fuel injector that ejects fuel toward a jet flow; an ignition device that is disposed downstream from the fuel injector; a cylindrical duct that surrounds a combustion region; a flame holder that is disposed in the duct; and a swirling flow generating part that maintains an axial flow of the jet flow in an axial direction of the duct in an outer region of the duct in a radial direction inside the duct and that converts the jet flow to a swirling flow centered on an axis of the duct in an inner region of the duct in the radial direction inside the duct.

Thrust increasing device

The invention is a combustor liner () of a dual wall cooling structure including an inner wall section () configured to surround a combustion region () and in which a plurality of effusion cooling holes () are formed, and an outer wall section () formed to be spaced apart from the inner wall section () and in which a plurality of impingement cooling holes () are formed, wherein the inner wall section () is constituted by a plurality of plate-shaped members (), and a support guide member () is provided which is configured to guide the plurality of plate-shaped members () to enable free insertion and extraction and support the plurality of plate-shaped members () at intervals such that deformation by thermal expansion is able to be absorbed.

Combustor liner with dual wall cooling structure

A burnerfor combustion chamber is provided with a cylindrical mixing portionthat mixes air for combustion (oxidizing agent) and fuel in the interior thereof and has one endthat opens to a combustion portion; a spray nozzle (fuel spraying portion)that sprays fuel in the mixing portion, being disposed on another endof the mixing portion; first blowing portsthat introduce the air for combustion to the mixing portionto form a swirling flow with the fuel, being disposed to open to the inner wall of the mixing portion; and second blowing portsthat additionally introduce the air for combustion to the mixing portion, opening in a direction different from the first blowing portsand being disposed further to the other endside of the mixing portionthan the swirling flow. The burner for combustion chamber and combustion method of the present invention can shorten the flame length in the central axial direction by improving the combustion efficiency even during low loading and shorten the overall length of the burner for combustion chamber in the central axial direction.

Burner for combustion chamber and combustion method

Growing community of inventors

Tokyo, Japan

Nagayoshi Hiromitsu