Closed cycle turbine blade cooling system - has blade inner channels, and two annular gap channels in disc forming high evaporation temp fluid circulation system

摘要

The cooling arrangement is used for the blades of turbine whereby various inner channels of the blade (1), together with the two annular gap channels in the turbine disc, (20), form an enclosed circulating system. The system contains a fluid of very high evaporation temp. and in the disc is a heat transmission surface (10). Secondary cooling also occurs by means of air, water, or a mixture of the two, after heating and/or evaporation via an annular gap (9), in the hot gas channel. The annular gap channels and the heat transmission surface (10) are arranged on both sides of the turbine disc.