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油气两相回流泵送密封的端面温度分布分析及试验验证
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Analysis and Experiment Verification on EndFace Temperature Distribution of OilGas TwoPhase Backflow Pumping Seal
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    摘要:

    密封端面温度不但影响端面变形也表征了端面的摩擦状态,对密封的运行至关重要,尤其是对于动压密封启停时的非开启状态。研究油气两相回流泵送密封(OG-BPS)在开启态和非开启态下的端面温度分布。在ANSYS Workbench中建立热-结构耦合数值分析模型并进行变工况参数试验,分析了转速、压差和液气比等工况参数对端面温度的影响。结果表明:在开启态下,端面温度随着转速和液气比的增加仅略有增加,因此OGBPS在变工况条件下能够稳定可靠地工作;在未开启态下,端面温度随着转速和压差的增加而急剧增加,但随着液气比的增大,端面温度迅速下降,油气两相介质有利于启停运行。试验结果与数值计算结果相吻合,证明了数值计算的正确性。

    Abstract:

    The seal endface temperature not only affects the endface deformation but also characterizes the friction state of the endface,which is very important for the operation of the seal,especially for the unopened state of the hydrodynamic seal when starting and stopping.The endface temperature distribution of oilgas twophase backflow pumping seal (OGBPS) in open state and unopened state was studied.The thermalstructure coupled numerical analysis model was established in the ANSYS Workbench and a variable condition parameter test was conducted.The effects of the working parameters such as the rotation speed,pressure difference and liquidgas ratio on the end face temperature were analyzed.The results show that the endface temperature only has a slightly increase with the increasing of the rotation speed and the liquidgas ratio in the open state,therefor the OGBPS can work stably and reliably under the variable working conditions.In the unopened state,the endface temperature is increased sharply with the increasing of the rotation speed and pressure difference,but with the increasing of the liquidgas ratio,the end surface temperature is decreased rapidly,and the oilgas twophase medium is conducive to startstop operation.The experiment results are in agreement with the numerical results,which proves the correctness of the numerical calculation.

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陈炼,李双喜,李欢,李世聪,李庆展.油气两相回流泵送密封的端面温度分布分析及试验验证[J].润滑与密封,2019,44(5):122-128.
. Analysis and Experiment Verification on EndFace Temperature Distribution of OilGas TwoPhase Backflow Pumping Seal[J]. Lubrication Engineering,2019,44(5):122-128.

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  • 在线发布日期: 2019-07-04
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