东方汽轮机
東方汽輪機
동방기륜궤
DONGFANG TURBINE
2014年
2期
1-4,10
,共5页
排汽缸%气动性能%数值分析%耦合
排汽缸%氣動性能%數值分析%耦閤
배기항%기동성능%수치분석%우합
exhaust hood%aerodynamic performance%numerical analysis%coupling
低压排汽缸的气动性能影响汽轮机组的功率和效率。文章对单独排汽缸和汽轮机低压末级整圈与排汽缸耦合进行了数值分析对比，发现汽轮机末级动叶出口流场的不均匀性和强烈的预旋影响低压排汽缸的气动性能。高性能的低压排汽缸设计应该考虑末级与低压排汽缸流场之间的相互作用。
低壓排汽缸的氣動性能影響汽輪機組的功率和效率。文章對單獨排汽缸和汽輪機低壓末級整圈與排汽缸耦閤進行瞭數值分析對比，髮現汽輪機末級動葉齣口流場的不均勻性和彊烈的預鏇影響低壓排汽缸的氣動性能。高性能的低壓排汽缸設計應該攷慮末級與低壓排汽缸流場之間的相互作用。
저압배기항적기동성능영향기륜궤조적공솔화효솔。문장대단독배기항화기륜궤저압말급정권여배기항우합진행료수치분석대비，발현기륜궤말급동협출구류장적불균균성화강렬적예선영향저압배기항적기동성능。고성능적저압배기항설계응해고필말급여저압배기항류장지간적상호작용。
Aerodynamic performance of the LP exhaust hood influenced power and efficiency of the steam turbine. Numerical anal-ysis for single cylinder and LP last stage coupling with exhaust hood showed that the exit flow field's inhomogeneity and pre-swirl of last stage blade affected the aerodynamic performance of LP exhaust hood. Design of LP exhaust hood with high performance should consider the interaction of the last stage and flow field of LP exhaust hood.
