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An experimental investigation of the steady-state response of a noncontacting flexibly mounted rotor mechanical face seal

机译:非接触式柔性安装转子机械端面密封件稳态响应的实验研究

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摘要

Recent theoretical work on the dynamics of the noncontacting flexibly mounted rotor (FMR) seal has shown that it is superior in every aspect of dynamic behavior compared to the flexibly mounted stator (FMS) seal. The FMR seal is inherently stableregardless of the operating speed, the maximum relative misalignment response is smaller, and the critical stator misalignment is larger. All these are measures of superior performance. This work undertakes the experimental investigation of the dynamicbehavior of a noncontacting FMR seal. The steady-state response of the FMR seal was measured at various operating conditions. The results are given in terms of dynamic and static transmissibilities, i.e., amplitude ratio of responses to two forcinginputs: the initial rotor and fixed stator misalignments. These are then compared to the analytical predictions. Further, operation maps are drawn for each set of operation conditions. The maps indicate how safely (away from contact) the seal operates. It is shown that the combination of the seal parameters that maximize the fluid film stiffness is optimal for safe noncontacting operation.
机译:关于非接触式柔性安装的转子(FMR)密封件的动力学的最新理论研究表明,与柔性安装的定子(FMS)密封件相比,它在动力学行为的各个方面都优越。无论运行速度如何,FMR密封件本质上都是稳定的,最大相对未对准响应较小,而关键定子未对准较大。所有这些都是卓越性能的衡量标准。这项工作进行了非接触FMR密封的动态行为的实验研究。在各种操作条件下测量FMR密封的稳态响应。结果以动态和静态的透射率给出,即对两个强制输入的响应的振幅比:初始转子和固定定子未对准。然后将这些与分析预测进行比较。此外,针对每组操作条件绘制操作图。这些图表示密封件操作的安全性(远离接触)。结果表明,使液膜刚度最大化的密封参数组合对于安全的非接触式操作而言是最佳的。

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