上游静叶干涉减少了动叶顶部二次泄漏流强度。
Upstream stator-rotor interaction reduces the double leakage flow intensity in the rotor tip region.
存在壁面移动时，二次泄漏更容易发生，但间隙流动得到改善；
When the case is moving, the second leakage on the tip of splitter happens more easier, but the flow on the cascade tip is improved.
论述了在北方高寒地区锅炉风机暖风器二次泄漏原因的分析及针对不同原因采取的措施。
The causes for the second leakage from the heater-fan for boilers in the northern extremely cold area are reviewed and different actions are proposed for different causes.
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