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| Dynamics Modelling and Analysis of Rotary Joint with Contact-free Clearance Seals |
| Received:July 29, 2015 Revised:October 10, 2015 |
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| DOI：10.7643/issn.1672-9242.2015.05.012 |
| KeyWord:clearance seal rotary joint ring dynamic model |
| Author | Institution |
| LI Feng |
Institute of System Engineering，CAEP，Mianyang ，China |
| TAN Xiao-jun |
Institute of System Engineering，CAEP，Mianyang ，China |
| BAI Yun-shan |
Institute of System Engineering，CAEP，Mianyang ，China |
| ZHU Yong-qing |
Institute of System Engineering，CAEP，Mianyang ，China |
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| 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. |
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