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发明公开
CN103321688A 用于使流经燃气涡轮机的热气再循环的系统和方法 有权

用于使流经燃气涡轮机的热气再循环的系统和方法
摘要：
本发明公开一种用于使流经燃气涡轮机的热气再循环的系统。所述系统大体包括：具有下游表面的过渡连接件；具有前缘表面的固定喷嘴，所述前缘表面与过渡连接件下游表面相邻；在所述过渡连接件下游表面与所述固定喷嘴前缘表面之间限定的间隙；以及突起，所述突起具有与外表面径向分离的内弧形表面。所述突起大体从所述固定喷嘴前缘表面朝向所述过渡连接件下游表面延伸，并且至少部分减小所述间隙。密封件延伸跨过所述间隙，并且可与所述过渡连接件和所述固定喷嘴前缘表面接触。再循环区可至少部分限定于所述突起内弧形表面、所述固定喷嘴前缘表面和所述过渡连接件下游表面之间。
摘要（英）：

A system for recirculating a hot gas flowing through a gas turbine generally includes a transition piece having a downstream surface, a stationary nozzle having a leading edge surface adjacent to the transition piece downstream surface, a gap defined between the transition piece downstream surface and the stationary nozzle leading edge surface, and a projection having an inner arcuate surface radially separated from an outer surface. The projection generally extends from the stationary nozzle leading edge surface towards the transition piece downstream surface and at least partially decreases the gap. A seal extends across the gap and may be in contact with the transition piece and the stationary nozzle leading edge surface. A recirculation zone may be at least partially defined between the projection inner arcuate surface, the stationary nozzle leading edge surface and the transition piece downstream surface.

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