A power generation system

F - Mech Eng,Light,Heat,Weapons – 01 – D

Patent

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Details

F01D 5/28 (2006.01) F01D 5/06 (2006.01) F01K 23/02 (2006.01)

Patent

CA 2245049

A steam turbine that includes a rotor provided with a mono-block rotor shaft. Multi-stage blades are fixed to the rotor shaft from a high pressure side. The steam inlet temperature of the first stage blades is not less than 530°C to a low pressure side. Final stage blades are provided at the low pressure side having a length not less than 40 inches for a shaft rotated at 3000 rpm or a length not less than 33.5 inches for a shaft rotating at 3600 rpm. The final stage blades are illustratively made from a Ti-based alloy.

Cette invention vise une turbine à vapeur à rotor monté sur arbre d'entraînement monobloc qui porte plusieurs étages d'ailettes depuis un côté haute pression. La température de la vapeur à l'admission dans le premier étage des ailettes est d'au moins 530 degrés Celsius vers un côté basse pression. Les ailettes du dernier étage, côté basse pression, ont une longueur d'au moins 40 pouces, pour une vitesse de rotation de l'arbre de 3000 tr/min., ou une longueur d'au moins 33,5 pouces pour une vitesse de rotation de 3600 tr/min. Les ailettes du dernier étage sont typiquement faites d'un alliage à base de titane.

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