Hitachi, Ltd.

Isao Takehara

Tetsuo Sasada

Hiroshi Inoue

Hidetaro Murata

Tomomi Koganezawa

Motoaki Utamura

Fumiyuki Hirose

Nariyoshi Kobayashi

Yasuhiro Katoh

Takaaki Kuwahara

Nobuyuki Horii

Shunichi Anzai

Toshifumi Sasao

Yasuyuki Watanabe

Akinori Hayashi

Kazuhiko Kawaike

Hidetoshi Kuroki

Kazuyuki Ito

Seisaku Takihana

Yoshitaka Hirata

Hajime Toriya

Masami Noda

Takashi Ikeguchi

Haruo Urushidani

Shouhei Yoshida

Tomoya Murota

Masaya Ohtsuka

Shinya Imano

Hiroyuki Doi

Takeshi Kudo

Hiromi Koizumi

Shinichi Hoizumi

Katsuo Wada

Shigeo Sakurai

Shinichi Inage

Mitsuo Teranishi

Kuzuhiko Kawaike

Youtarou Kimura

A combustor comprises a liquid fuel nozzle for injecting liquid fuel to a combustion chamber, and an air supply nozzle disposed around the liquid fuel nozzle and injecting air. The air supply nozzle is disposed such that air is injected from the air supply nozzle in a direction toward an axis of the liquid fuel nozzle. A space is formed around an outlet of the liquid fuel nozzle, through which the liquid fuel is injected from the liquid fuel nozzle to the combustion chamber, upstream of a distal end of the outlet in a direction in which the liquid fuel is injected. Carbonaceous deposits on surrounding surfaces of the outlet of the liquid fuel nozzle can be suppressed regardless of the operating conditions of a combustor.

Combustor, gas turbine combustor, and air supply method for same

A Ni&#x2014;Fe based super alloy having high strength and toughness at high temperatures even when used in high-temperature environments, and a process of producing the super alloy. A turbine disk using the super alloy, a process of producing the turbine disk, a turbine spacer using the super alloy, and a process of producing the turbine spacer, as well as a gas turbine are also provided. The Ni&#x2014;Fe based super alloy contains not more than 0.03% by weight of C, 14-18% of Cr, 15-45% of Fe, 0.5-2.0% of Al, not more than 0.05% of N, 0.5 to 2.0% of Ti, 1.5-5.0% of Nb, and Ni as a main ingredient.

Ni-Fe based super alloy, process of producing the same and gas turbine

A gas turbine which can detect ignition in a combustor regardless of startup conditions of the gas turbine, such as the hot startup or the cold startup. An ignition detecting method for the gas turbine comprises the steps of calculating a difference between the exhaust temperature detected at a particular time before outputting of an ignition command for a combustor and the exhaust temperature detected after the outputting of the ignition command, and determining that the combustor is ignited, when the calculated difference is not less than a predetermined value. As an alternative, the method includes a step of determining that the combustor is ignited, when a change amount or rate of the exhaust temperature exceeds a predetermined value in a predetermined period from the outputting time of the ignition command.

Ignition detecting system and method for gas turbine

A gas turbine combustor has a combustion chamber into which fuel and air are supplied, wherein the fuel and the air are supplied into said combustion chamber as a plurality of coaxial jets.

Gas turbine combustor and operating method thereof

Gas turbine combustor

A gas turbine combustor comprises a premixed combustion burner disposed on the periphery of a pilot burner, an approximately cylindrical combustor liner disposed on the downstream side of the premixed combustion burner, which defines a combustion chamber in the liner. The gas turbine combustor is characterized by further comprising flame stabilizers radially disposed at the exit of the premixed combustion burner, and a fuel injection means with which the pilot burner is provided injects at least one of gas fuel and liquid fuel, in which a plurality of air nozzles are provided which are located outside the pilot burner and inside the premixed combustion burner, and which spout out air into the combustion chamber. Adequate combustion can be accomplished with a combustor which is capable of using gas fuel and liquid fuel, and at the same time, NOx can be reduced.

Gas turbine combustor, combustion method of the gas turbine combustor, and method of remodeling a gas turbine combustor

A turbine power plant includes power generation apparatuses divided into a plurality of modules, a common base mounting thereon the power generation apparatuses and a supporting apparatus for supporting the common base. The common base is constructed so as to be commonly used as a part of a transportation vehicle and as a frame of the power plant.

Turbine power plant, installation process and removal process of the turbine power plant

A gas turbine comprises a compressor for compressing a gas supplied therein and discharging the compressed gas, a combustor in which the discharged gas from the compressor and a fuel are combusted, a turbine to be driven by a combustion gas from the combustor, and a water injection unit which injects water into the gas to be supplied to the compressor, thereby lowering the temperature of the gas to be introduced into the compressor to a temperature lower than the atmospheric temperature, and causing water droplets having been injected in the gas and within the compressor to be vaporized while flowing down therein, wherein the quantity of water spray injection is controlled while monitoring operational conditions of the gas turbine.

Gas turbine having water injection unit

Gas turbine with water injection

Gas turbine having water spray injection control

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Hitachi, Japan

Isao Takehara