燃气轮机排气管的流场研究及改进

The Study and Refinement of Gas Turbine Exhaust Volute Flow Field

结合某型机组船用化改装任务,分别对A型及B型机组排气管进行多种方案的模型试验,分析了排气管出口及气流转弯导流片对其性能的影响。证明了在其结构尺寸配合恰当的情况下,采用导流片乃为进一步改进其性能的一种行之有效的方法。本文还对排气管运行时其结构可靠性进行了探讨与分析。

The model tests of a multitude of exhaust volute versions for gas turbine unit type A and type B were conducted in connection with a gas turbine marinization effort. The effect of exhaust volute outlet and flow deflectors on the engine performance was analysed. It can be shown that under the condition of a proper matching with the engine structural dimensions the use of the flow deflectors constitutes an effective method for improving engine performance. An investigation and analysis of the exhaust volute structural reliability during its operation has also been performed.