Gas turbine power generation facility

F - Mech Eng,Light,Heat,Weapons – 02 – C

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F02C 7/36 (2006.01) F02C 6/00 (2006.01) F16D 3/64 (2006.01) F16D 13/68 (2006.01) F16F 15/133 (2006.01) H02K 7/18 (2006.01) F16H 1/22 (2006.01)

Patent

CA 2407480

There is provided a planetary reduction gear 10 between a gas turbine 1 and a generator 5. The planetary reduction gear includes elastic deformation means 12 on an output side, and for the elastic deformation means, a strain energy within an elastic limit is set to be larger than a fluctuation torque energy of the generator of a momentary voltage drop time. The elastic deformation means 12 includes an elastic member which elastically connects an output shaft 10a of the planetary reduction gear to an outer ring 10b. Thereby, when an excessive torque is generated in the generator by a momentary voltage drop, service interruption, and the like for a short time, it is possible to maintain the operation of a power generation facility, and secure a power supply of an important load, and an installation length is shortened and the facility can be downsized. 17

L'invention concerne un réducteur de vitesse à train planétaire (10) monté entre une turbine à gaz (1) et un générateur (5). Le réducteur de vitesse à train planétaire comporte sur son côté sortie un organe de déformation élastique (12) dont l'énergie de déformation limite est supérieure à l'énergie de couple variable du générateur en cas de chute de tension. Par ailleurs, l'organe de déformation élastique (12) comprend un élément élastique qui relie de façon élastique l'arbre de sortie (10a) et la couronne extérieure (10b) du réducteur de vitesse à train planétaire. Ainsi, en cas de couple excessif momentané dans le générateur dû à une chute de tension, une panne ou autre, on peut maintenir le fonctionnement du générateur et continuer d'alimenter la charge principale. De plus, l'invention permet d'accroître la compacité de l'appareil.

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