Steam-turbine plant

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

Patent

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F01K 7/40 (2006.01) F01K 11/02 (2006.01) F22D 1/32 (2006.01)

Patent

CA 2234227

In order to obtain a particularly compact steam power plant (1) with a plurality of pressure stages (4a, 4b) mounted on a common turbine shaft (6), a condenser (10) is mounted at the outflow side in the axial direction of the turbine shaft (6) and a feed-water preheater (14) has a modular design. The feed-water preheater (14) has a plurality of heat exchanger modules (20, 22) which are arranged in a common housing (24) and may be heated by steam (AN, AH) tapped from one or all pressure stages (4a, 4b). The heat exchanger modules (20, 22) are mounted in series at the feed-water side and in parallel at the tapped steam side.

Dans cette centrale thermique à vapeur (1) comportant une pluralité de paliers de pression (4a, 4b) montés sur un arbre (6) commun à toutes les turbines, un condensateur (10) est monté du côté d'écoulement dans le sens axial de l'arbre (6) des turbines et un préchauffeur (14) d'eau d'alimentation est conçu de façon modulaire, ce qui permet d'obtenir une centrale thermique à vapeur particulièrement compacte. Le préchauffeur (14) d'eau d'alimentation comprend une pluralité de modules échangeurs de chaleur (20, 22) montés dans un seul bâti (24) et susceptibles d'être chauffés par la vapeur (A¿N?, A¿H?) prélevée sur un ou tous les paliers de pression (4a, 4b). Les modules échangeurs de chaleur sont montés en série côté eau d'alimentation et en parallèle côté vapeur prélevée.

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