PEEK旋转密封环密封性能仿真和试验研究

为研究低刚度胀圈型旋转密封环的接触状态和密封性能，以聚醚醚酮(PEEK)材料的无槽环和V形槽环两种密封环为研究对象，基于COMSOL有限元软件建立了旋转密封流固耦合模型，对密封状态进行了模拟分析，并在试验台上测试了密封环的摩擦转矩和漏率. 仿真结果表明：在载荷作用下，密封环的变形显著影响密封面接触压力和流体压力分布. 试验结果表明：由于槽区流体的静压承载作用，V形槽环的摩擦转矩比无槽环小40%左右，但由于端面开槽减小了局部径向密封宽度，V形槽环漏率比无槽环大10%左右. 另外，两种环的摩擦转矩随转速增加均没有下降趋势，说明在试验条件下密封面动压减摩效果不显著. 研究结果有助于进一步认识胀圈型旋转密封环的密封机理，指导新型密封环的设计.

To investigate the contact status and sealing performance of low-stiffness expanding-ring rotary seal rings, two types of seal rings, grooveless and V-grooved, made of polyether ether ketone (PEEK), were taken as the research objects. A fluid-structure interaction (FSI) model for rotary seals was established using COMSOL finite element software, and simulated analysis of the sealing status was conducted, while the friction torque and leakage rate of the seal rings were tested on a test bench. The simulation results show that under load, the deformation of the seal rings significantly affects the contact pressure of the sealing interface and the distribution of fluid pressure. The experimental results show that due to the hydrostatic bearing effect of the fluid in the groove area, the friction torque of the V-grooved seal ring is approximately 40% lower than that of the grooveless one. However, because the end-face grooving reduces the local radial sealing width, the leakage rate of the V-grooved seal ring is approximately 10% higher than that of the grooveless one. In addition, the friction torque of both types of seal rings shows no downward trend with increasing rotational speed, indicating that the friction reduction effect of dynamic pressure on the sealing interface is not significant under the test conditions. The research results help to further understand the sealing mechanism of expanding-ring rotary seal rings and guide the design of new-type seal rings.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于PEEK（聚醚醚酮）材料旋转密封环的密封性能研究，通过仿真和试验方法对比了无槽环和V形槽环。研究发现，V形槽环因槽区流体静压承载作用，摩擦转矩比无槽环小约40%，但漏率因端面开槽增大约10%，且摩擦转矩随转速未下降，表明动压减摩效果有限。数据集包含仿真模型和试验数据，旨在揭示密封机理并指导新型密封环设计，适用于摩擦学和机械工程领域。