Patent ID: 6846258
Filing Date: 2005-01-25
Classification: B60L,F02C,F16H,H02K,Y02T,Y10T

Abstract:
1. A gas turbine power generation facility which rotates/drives a generator with a gas turbine having an output shaft, comprising: a planetary reduction gear between the gas turbine and the generator, wherein: the planetary reduction gear comprises an elastic deformation means on an output side, a center sun gear connected to be driven by the output shaft of the gas turbine, a plurality of planetary gears disposed to mesh with the center sun gear, and an inner gear disposed to mesh with the planetary gears; wherein the plurality of planetary gears are rotatably attached to a fixed portion, and; the inner gear is integrally molded with an inner surface of an outer ring of the planetary reduction gear, wherein the outer ring is positioned coaxially with the output shaft of the gas turbine; and wherein the elastic deformation means has a strain energy within an elastic limit, which is set to be larger than a fluctuation torque energy of the generator of a momentary voltage drop time, wherein the elastic deformation means includes an elastic member elastically connecting an output shaft of the planetary reduction gear to the outer ring, and the elastic member includes a plurality of leaf springs whose inner ends are fixed to the output shaft of the planetary reduction gear, and whose outer ends are connected to the outer ring of the planetary reduction gear, wherein the outer end of each leaf spring is slidable in a length direction and is connected in a peripheral direction so each leaf spring provides a cantilever whose inner end is fixed, wherein each leaf spring is constructed with a relatively thicker inner-end side and a relatively thinner outer-end side.