CAJ | 학술논문

目的：研究非接触式间隙密封旋转接头的动力学特性。方法针对一种典型的间隙密封旋转接头，建立考虑非线性油膜力、转子旋转运动和浮环振动等因素的系统动力学方程，采用数值仿真分析油膜间隙、转速、密封圈刚度等对转子和浮环运动的影响。结果间隙越大，转子运动幅值越大，转子与浮环的相对运动位移也越大；随着转速的升高，转子和浮环运动幅值先增大后减小；随着密封圈刚度的增大，转子和浮环的运动幅值先增大后减小。结论建立的动力学模型可用于分析非接触式间隙密封旋转接头的动力学特性，为旋转接头设计提供了理论方法。
목적：연구비접촉식간극밀봉선전접두적동역학특성。방법침대일충전형적간극밀봉선전접두，건립고필비선성유막력、전자선전운동화부배진동등인소적계통동역학방정，채용수치방진분석유막간극、전속、밀봉권강도등대전자화부배운동적영향。결과간극월대，전자운동폭치월대，전자여부배적상대운동위이야월대；수착전속적승고，전자화부배운동폭치선증대후감소；수착밀봉권강도적증대，전자화부배적운동폭치선증대후감소。결론건립적동역학모형가용우분석비접촉식간극밀봉선전접두적동역학특성，위선전접두설계제공료이론방법。
ABSTRACT:Objective To study the dynamic characteristic of rotary joint with contact-free clearance seals. Methods Targeting at a typical type of rotary joint with clearance seal, the system dynamic equation was established considering the nonlinear oil-film force, rotor rotation and ring vibration, and the influences of key parameters such as clearance size, rotation speed, ring stiffness on the movement of rotor and ring were analyzed by numerical simulation analysis. Results The analysis result showed that the movement amplitude of rotor and the amplitude of relative movement both increased with the increase of clearance size, and the movement amplitudes of rotor and ring increased firstly and then declined with the increase of rotation speed or ring stiffness. Conclusion The dynamic model presented in this paper could be used to analyze the dynamic characteristics of rotary joint with contact-free clearance seals, which provides the theory guidance for the rotary joint design.