基于多工况要求的低迟滞指尖密封结构优化

Structural Optimization of Finger Seal with Low Hysteresis Based on Multi-operating Condition

针对目前指尖密封优化设计中存在的工况局限性问题,根据指尖密封的实际工作要求确定了相应的工况条件;以低迟滞率为优化目标,分别对不同工况条件下的指尖密封进行了结构参数优化分析;通过综合分析其优化计算结果发现,可将转子的跳动量进行分组,并找到适宜于该组范围内的指尖密封优化新结构。经实例验证表明,这种新结构参数的指尖密封与各单一工况下的指尖密封优化结果十分接近,从而满足了指尖密封多工况条件下的低迟滞结构优化要求。

For the operation condition limitation problem existed in finger seal optimization clesign, homologous operating condition was ascertained according to finger seal actual work request. For each operating condition, structural optimization of finger seal was made with low hysteresis as objective function. Optimization calculation result was analyzed and the whole rotor jump range was grouped up, a new finger seal structure for each group was found. By example demonstration, the each new finger seal structure beseems homologous operating condition.