Patent ID: 8206089
Filing Date: 2012-06-26
Classification: F01D,F05D,Y02T

Abstract:
1. A flow control device for controlling fluid flow into a turbine, said turbine comprising: a stator comprising a plurality of vanes extending radially inwards from a casing and arranged to define a plurality of nozzles extending radially inwards from said casing, each nozzle being defined by adjacent pairs of vanes; a rotor located in a fluid flow direction downstream of said stator and comprising a plurality of blades extending radially from a turbine shaft, wherein a fluid is arranged to be admitted to said turbine upstream of said stator and to flow around said plurality of vanes through said plurality of nozzles for impingement upon said plurality of blades of said rotor; and flow control means arranged to control a nozzle area open for fluid flow by altering a radial length of at least one of said plurality of nozzles, said flow control means comprising: