热载荷对机械密封动环振动特性的影响分析

The Effect Analysis of Heat-load to the Natural Vibration Characteristics of the Dynamic Ring for Mechanical Seal

在高参数复杂工况条件下,机械密封摩擦副密封动环的固有振动特性将严重影响机械密封系统的工作性能及使用寿命.研究针对高参数波纹管机械密封装置摩擦副密封动环,建立了其动力学模态模型,进行了有限元分析,通过计算得到了动环在有无热载荷条件下的前十五阶固有振动频率、振幅及主振型;对动环在有无热载荷条件下的前十五阶模态振型变化趋势进行了对比分析,得到了动环周围的温度场对其固有振动频率的影响情况和动环的固有振动频率随模态阶数的变化规律.

The natural vibration characteristics of the dynamic ring in the extreme conditions and the high parameters will seriously affect the working performance and service life of the mechanical seal system. In this research, aimed at the study of the dynamic ring for the high parameter bellows mechanical seal system, the dynamic ring modal model was built up, and the first fifteen order natural vibration frequency, amplitude and vibration mode of the dynamic ring under the conditions of with and without heat-load was got by calculating, and its change trend was analyzed, the change rule of inherent vibration frequency for dynamic ring with the modal order number is obtained.