设计带充、抽气系统的高速电主轴水润滑迷宫密封，利用Gambit和Fluent等计算流体动力学相关软件，采用两相流、瞬态模型模拟电主轴滑动轴承两侧迷宫密封的压气、抽水系统的内部流场；对不同时间流场的压力、速度和相图进行分析；探讨泄漏水在该系统作用下的流动行为和特点。结果表明，该非接触、动力密封系统可在最小摩擦损耗的同时，有效地抽取滑动轴承两端部泄漏的润滑用水，从而起到密封作用，为超高速电主轴滑动轴承的密封设计提供了新的设计思路。%The labyrinth seal with charge and exhaust system was designed for water lubrication high-speed electric spindle. The internal flow field of the pressure gas and pumping system of the labyrinth seal on both sides of electric spin-dle sliding bearings was simulated based on two-phase flow model and transient model by using Gambit and Fluent compu-tational fluid dynamics software. The pressure,speed and phase diagram of the flow field at different time were analyzed, and the flow behavior and characteristic of the leakage water in the system was investigated. The results show that the non-contact dynamic sealing system designed can effectively pump the water for lubrication that gives away from the two sides of sliding bearing when maintaining the minimum friction losses of the system,and thus plays a role in sealing. This research provides a new idea for the seal design of super high-speed spindle sliding bearing.
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