Abstract—

This paper presents the numerical methods for calculating the hydrodynamic characteristics of a mechanical seal, taking into account the possibility of a phase transition in its gap. In the numerical model, the solutions are used for the flow of both liquid and gas in the microgap of compaction obtained using the finite volume method. Regularities of the influence of the size and taper of the gap, the depth of the microgrooves, the pressure drop and the value of the saturated vapor pressure on the hydrodynamic characteristics of the seal are revealed. A method has been developed for calculating leaks, the stiffness of the lubricant layer, and the friction power in the seal gap, taking into account vaporization and thermal deformations of the sealing rings. Recommendations for the selection of the geometric parameters of the seal are offered. The cause of pulsating seal leakage has been identified. The developed technique is applicable both for cryogenic liquids and for water.

中文翻译：

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渗漏蒸汽形成的机械密封的流体力学特性计算方法

摘要—

本文介绍了一种计算机械密封件流体力学特性的数值方法，同时考虑了其间隙中存在相变的可能性。在数值模型中，使用有限体积法获得的压实微间隙中的液体和气体均用于流动。揭示了间隙的大小和锥度，微槽的深度，压降以及饱和蒸气压的值对密封件的流体力学特性的影响的规律性。考虑到密封环的汽化和热变形，已经开发出一种用于计算泄漏，润滑剂层的刚度以及密封间隙中的摩擦力的方法。提供了选择密封件几何参数的建议。确定了脉动密封泄漏的原因。开发的技术适用于低温液体和水。