射汽抽气器内部结构优化  

Optimization of Internal Structure of Steam Jet Extractor

作　　者：张旭阳 刘峰 杨文英 ZHANG Xuyang;LIU Feng;YANG Wenying(Shanghai Marine Equipment Research Institue,Shanghai 200031,China)

机构地区：[1]上海船舶设备研究所,上海200031

出　　处：《机电设备》2025年第2期18-21,26,共5页Mechanical and Electrical Equipment

摘　　要：针对某射汽抽气器振动较大的问题,分析导致问题发生的射汽抽气器流场,相应地采取增设顶部倒角、增加喷嘴喉部锥角、增加底部倒角和消除流动台阶等改进措施,并采用数值计算方式验证。数值分析表明,改善内部通流结构后,抽气器内部湍动能下降,抽气器内部流动更加光顺。In response to the problem of significant vibration in a steam jet extractor,the flow field of the steam jet extractor that caused the problem is analyzed.Corresponding improvement measures are taken,such as adding a top chamfer,increasing the nozzle throat cone angle,increasing the bottom chamfer,and eliminating the flow step.Numerical calculations are used to verify the results.Numerical analysis shows that after improving the internal flow structure,the turbulent kinetic energy inside the extractor decreases,and the flow inside the extractor becomes smoother.

关 键 词：射汽抽气器 内部结构优化 紊流 

分 类 号：U664.131[交通运输工程—船舶及航道工程]