Combined cycle power generation plant

Details Combined cycle power generation plant Combined cycle power generation plant

F - Mech Eng,Light,Heat,Weapons

02

C

F02C 6/18 (2006.01) F01K 23/00 (2006.01) F01K 23/10 (2006.01) F02C 7/16 (2006.01)

Patent

CA 2242071

In a combined cycle power generation plant in which a gas turbine high temperature portion is cooled by steam, pressure loss of the cooling steam is prevented from becoming larger and the cooling steam is recovered efficiently. The high temperature portion of gas turbine stationary blade or moving blade is provided with a plurality of mutually independent passages which are arranged in parallel, thereby pressure loss causing portions of the cooling steam are dispersed corresponding to the number of positions of the parallel arrangement and aggregate of all the pressure losses can be reduced.

Dans une centrale électrique à cycle combiné, la partie à température élevée de l'aube d'une turbine à gaz est refroidie au moyen de vapeur. L'invention propose d'empêcher l'aggravation du problème de la perte de pression de la vapeur de refroidissement et de permettre une récupération efficace de la vapeur de refroidissement. La partie où la température est élevée dans l'aube stationnaire ou en mouvement d'une turbine à gaz est pourvue de nombreux passages mutuellement indépendants disposés en parallèle et la perte de pression subie au niveau des passages de vapeur de refroidissement est répartie entre le nombre de passages arrangés en parallèle; il est donc possible de réduire les pertes globales de pression.

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