基于ANSYS的大型船舶艉轴密封变形研究  

Study on Deformation Field of Stern Shaft Mechanical Seal Based on ANSYS

作　　者：许杨[1] 王玉玲[1] 胡小红[1] 

机构地区：[1]青岛理工大学机械工程学院,山东青岛266033

出　　处：《机械研究与应用》2014年第5期41-44,48,共5页Mechanical Research & Application

基　　金：山东省自然基金(编号:ZR2009FM066);山东省高等学校科技计划项目(编号:J12LB07)

摘　　要：在合理的假设条件下,利用有限元分析软件Ansys13.0对特定工况下机械密封的力、热变形分别进行了计算,发现热变形在整体变形中占主导地位。通过对比动环与静环接触端面节点的位移曲线,进一步得出依据软硬规则进行材料配对选取的动静环,两者材料热膨胀系数接近时,动环的热变形为整个密封变形的最重要因素,在保证弹簧补偿力的前提下,应重点考虑如何减小动环的热变形。分析了端面宽度、弹簧压力和转速对密封端面热变形的影响,提出在对密封系统进行优化设计时,不能只考虑单个因素对变形的影响,应该综合考虑,为船舶艉轴密封的优化设计提供理论依据。Under the condition of reasonable assumptions, the force deformation and the thermal deformation of mechanicalface seals are calculated by using the finite element analysis software Ansys13. 0, and then it is found that the thermal deform-ation is the dominant factor in whole deformation. On the basis of soft and hard rules of dynamic and static ring material pai-ring selection, as the thermal expansion coefficient close to moving ring, the fact that the thermal deformation is the most im-portant factor in the whole sealing deformation is concluded by contrasting the displacement curves of contact surface nodes.On the premise of ensuring the spring balancing force, we should consider how to reduce the thermal deformation of the movingring. The influence that the face width, spring pressure and rotating speed work on the thermal deformation of seal faces is an-alyzed, and it is found that we should comprehensively consider the influence on deformation in optimal design of the sealingsystem, thus provide a theoretical basis for optimum design of stern shaft sealing.

关 键 词：艉轴机械密封 变形 端面宽度 有限元法 

分 类 号：TH136[机械工程—机械制造及自动化]