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可控涡技术目前在大型汽轮机通流部分的优化设计和技术改造中得到日益重视和应用。该文介绍了３ 种可控涡设计环形叶栅与直叶环形叶栅对比试验的结果，并对各种可控涡设计环形叶栅降低损失的机理进行了分析。图１２ 参３
Controllable vortex technology is gaining more and more attention and application in the optimization design and technical transformation of the large steam turbine flow passage. In this paper, the results of three kinds of controllable vortex designs comparing the annular cascade with the straight cascade annular cascades are introduced, and the mechanism of reducing the losses of the annular cascades with controllable turboids is analyzed. Figure 12 参 参