基于热-结构耦合的旋转阀间隙分析  

Thermal- structural coupled analysis of gap between rotary valve's body and rotor

作　　者：宫恩祥[1] 夏天[1] 杨岩[1] 蔡皖锋 胡海鹏[1] 

机构地区：[1]合肥工业大学化工机械研究所,安徽合肥230009

出　　处：《排灌机械工程学报》2014年第8期698-702,共5页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(51276083);安徽省科技攻关计划项目(1301022051)

摘　　要：旋转阀阀体和转子的间隙对旋转阀的安全运行有重要影响.采用有限元方法和热力学理论对旋转阀阀体和转子的计算模型进行热分析,得到阀体和转子的温度场分布;利用热-结构耦合应变分析得到的变形量来计算旋转阀阀体和转子的间隙值,详细研究阀体上部不同管道作用力、物料对转子的作用力以及不同物料温度对旋转阀阀体和转子之间间隙值的影响.计算结果表明:阀体的温度从内到外逐渐降低,转子叶片处温度分布均匀,转子两端温度较低;随着物料温度的升高、阀体和转子之间的间隙逐渐变大;物料与转子作用力对间隙值影响可以忽略;随着阀体所受压力增大,阀体与转子间的间隙值增大,如需承受更大的上部管道作用力,可通过在阀体上增加加强筋等结构来增大局部的强度.The gap between body and rotor plays an important role in the safe operating of rotary valve. Based on the finite element method, thermodynamic and pseudo-fluid method, a thermal analysis about the body and rotor of rotary valve was carried out, and the temperature distribution was obtained. Based on the thermal -structure coupling strain analysis, thermal distortion was obtained, and through the deformation the requirement of the gap values between rotary valve body and rotor was found. Body temperature decreases gradually from inside to outside, the temperature of the rotor blades distributes evenly, and the temperature values on both ends of the rotor is lower. As the temperature of the material increases, the gap between the valve body and the rotor gradually increases. Material impact on the value of the gap between the rotor forces can be neglected. With the pressure on valve body increasing, the valve body clearance value between the rotor increases. For supporting greater force, other structural such as reinforcement can be added to the body to increase the structural strength.

关 键 词：旋转阀 拟流体 热-结构耦合 物料温度 间隙值 

分 类 号：TH122[机械工程—机械设计及理论]