船舶汽轮机末级叶片改进设计  

Improvement of end-stage blade for marine steam turbine

作　　者：高怡秋[1] 周振东[1] 张李伟[1] 

机构地区：[1]中国船舶重工集团公司第704研究所,上海200031

出　　处：《船舶工程》2009年第B09期33-35,44,共4页Ship Engineering

摘　　要：对于船舶汽轮机而言,末级叶片变工况特性对整个机组性能具有重要的影响.指出了某型船舶汽轮机末级叶片在低负荷工况时出现的根部负反动度以及脱流、回流问题;给出了叶型改进方案,通过强化叶型、合理控制叶片根部反动度等手段,降低低负荷工况下末级叶片根部的回流,提高叶片抗振强度,改善流动状况,提高机组性能.For marine steam turbine,end-stage blade/s variable condition capability make a great influence to the total performance.Point the minus reactionary degree 、off-flow and reflux which happen at the root of end-stage blade when in the low load condition.Bring out improvement scheme of blade type through enhancing blade type and controlling the reactionary degree of blade root reasonably to reduce reflux in low load condition and enhance blade/s intensity,improve flow situation and raise capability of total equipment.

关 键 词：船舶汽轮机 末级叶片 低负荷工况 弯曲叶片 

分 类 号：U664.113[交通运输工程—船舶及航道工程] TK263.3[交通运输工程—船舶与海洋工程]