离心压缩机叶轮结构优化设计

来源 :第三届中国国际透平机械学术会议 | 被引量 : 0次 | 上传用户:jiangxiaohui
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
叶轮是离心压缩机的核心部件之一,对于悬臂结构的转子系统,叶轮的质量和应力大小直接影响着转子组的安全稳定性,因此对叶轮进行结构优化设计,降低质量和应力尤为关键.本文综合有限元分析方法和数学优化算法,对某型号蒸汽压缩机半开式叶轮进行优化设计,优化后叶轮质量降低27.1Kg,降低约16.1%,叶轮最大等效应力降低196.4MPa,降低约18.5%,优化设计效果明显,对降低成本和提高机组转子稳定性有着重要意义,具有良好的工程实用价值.
其他文献
某核电厂3号机组商运前,进行调试试验期间连续出现了3次振动异常问题,其中2次由于振动超手动停机打闸值导致汽轮机被迫打闸停机.经分析确认,汽轮机振动异常根本原因为高中压缸径向通流间隙多级偏下限,容易发生动静碰磨,促成原因为汽水分离再热器二级再热调节阀动作逻辑异常,导致中压缸排汽温度下降过快.发生振动异常情况后,电厂技术人员及时制定方案,避免了再次冲转并网过程中二级再热调节阀动作逻辑异常,并计划后续机
Screw pumps are mainly used to transport liquid metal with high density and high temperature.A 3D gas-fluid two phase model with large eddy simulation(LES)is developed to probe the effect of the speed
The AMB rotor is composed of the mandrel and other sleeves that are assembled on the mandrel with interference fit.For AMB rotor,the more accurate the rotor mode analysis,the better the control design
In order to improve the design of cylindrical roller bearings,to prevent the occurrence of bearing wear and other failures of cylindrical roller,the complete dynamic model of rolling bearing is propos
根据滑动轴承稳态条件下流体动压可倾瓦轴承的计算函数推导出止推轴承承载力公式.考虑止推轴承、止推盘和油膜之间流—固—热多物理场耦合的情况下,建立止推轴承模型,并通过THRUST软件数值模拟分析,验证承载力计算公式的可适用性.考虑止推盘和瓦块的受力、受热形变的前提下,得出轴承载荷和瓦块最高温度在不同转速、不同油膜厚度和不同供油温度下的规律,得到不同油膜厚度下的压力分布图和瓦块的温度云图,为推力轴承的设
Due to the requirement for long lifetime and high rotating speed,an active magnetic bearing in this paper is designed for a 30 kW,60 000 rpm permanent magnet machine.The electromagnetic distribution c
针对高效高负荷轴流风机的设计问题,建立了一套包含参数选取、叶型优化、三维叶片等设计思想的气动设计流程.通过快速的设计迭代,完成了一台压比1.20的高负荷轴流风机的初步设计,载荷系数0.83.同时,证实了叶型优化和三维叶片技术对提高风机效率和裕度的有效性.
CFD method was employed to analyze the effect of the wall extension of hub and shroud at the impeller exit on a centrifugal compressor model stage with a large mass flow coefficient.The effect of clea
Environmental pressures and economic requirements have led to a drive to ever increasing steam parameters to further increase steam turbine cycle efficiencies.This poses a number of challenges: plant
Noise prediction can be simplified by application of hybrid approach.The computational fluid dynamics calculation can be accomplished by solving either compressible or incompressible Navier-Stokes equ