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以汽液两相流理论及方法为基础,采用CFD混合多相流模型,对处于高温、高压、高速复杂工况的波纹管集装式机械密封装置密封腔内两相流场进行了数值建模和分析,得到了由冲洗口位置的不同和密封环旋转引起的复杂三维流场特性,对不同的冷却效果进行对比,得到了最佳冷却位置,分析了密封腔内的温度场、压力场和速度场,并对比分析了密封腔压力随着不同主轴转速和不同冲洗液入口速度所呈现的规律,为高参数复杂工况下波纹管集装式机械密封装置的结构优化设计提供了理论依据。
Based on the theory and method of vapor-liquid two-phase flow, the CFD mixed multi-phase flow model was used to simulate the two-phase flow field in a sealed chamber of a bellows-type mechanical seal device under high temperature, high pressure and high speed complex conditions The three-dimensional flow field caused by the different position of the flushing port and the rotation of the seal ring was obtained. The different cooling effects were compared and the optimal cooling position was obtained. The temperature field and the pressure field And velocity field of the bellows are compared and analyzed. The regularity of the pressure in the sealed chamber with different spindle speeds and different inlet velocities is analyzed and compared, which provides a theoretical basis for structural optimization of the bellows-type mechanical seal device under the condition of high parameters .