概要介绍了大功率汽轮机低压排汽缸数值分析系统各部分的构成及实施的结果。
This paper analyzes the constitutes and results of numerical analysis system of the large power turbine's low pressure exhaust hood.
本文详细讨论了现代大功率汽轮机排汽缸的流动特点对其气动性能的要求及对机组的各种影响。
The flow characters and the requirement for aerodynamic performance of modern large steam turbine exhaust hood, and their several effects on the steam turbine are discussed in detail.
最后提出了提高排汽缸气动性能的途径。
The approach improving the hood aerodynamic performance is suggested.
计算结果表明改进后的排汽缸出口速度分布更加均匀，排汽损失明显降低，可有效提高机组整体性能。
The improvement indicates that the distribution of outlet velocity is more uniform and exhaust resistance decrease obviously. It can raise the total capability of equipment effectively.
提高排汽缸气动性能的新型措施为：采用具有负超高的扩压器和非对称扩压器；
The innovative measures to improve the aerodynamic performance of exhaust hoods can be given as follows: adoption of a diffuser with a negative excessive height;
提高排汽缸气动性能的新型措施为：采用具有负超高的扩压器和非对称扩压器；
The innovative measures to improve the aerodynamic performance of exhaust hoods can be given as follows: adoption of a diffuser with a negative excessive height;
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