Patent ID: 6382910
Filing Date: 2002-05-07
Classification: F01D,Y10S

Abstract:
A turbine expansion machine with variable nozzle mechanism, comprising:a vacuum vessel; an adiabatic expansion apparatus, disposed in the vacuum vessel, including a turbine impeller having an axis, the impeller being arranged to adiabatically expand gas when rotated; a control device, disposed outside the vacuum vessel, and operably connected coaxially with the turbine impeller to control the impeller; and a variable nozzle mechanism defining a variable throat area for gas introduced into the turbine impeller, the variable nozzle mechanism further comprising a nozzle component disposed in the adiabatic expansion apparatus, a driving component installed outside the vacuum vessel, and a coaxial, thin cylindrical component, operably connecting the nozzle component and the driving component to the turbine impeller, wherein the nozzle component is driven by rotating the cylindrical component about the axis of the turbine impeller.