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首页> 外文会议>FPST-vol.11; American Society of Mechanical Engineers(ASME) International Mechanical Engineering Congress and Exposition; 20041113-19; Anaheim,CA(US) >THERMO-HYDRAULIC MODEL OF A TWIN-SCREW MULTIPHASE PUMP
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THERMO-HYDRAULIC MODEL OF A TWIN-SCREW MULTIPHASE PUMP

机译：双螺杆多相泵的热工水力模型

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摘要

The twin-screw multiphase pump has been studied as an alternative equipment to substitute the conventional system (fluid separation, liquid pumping and gas compression) in petroleum boosting. By "pumping" gas and liquid together, the multiphase pump could reduce production costs, particularly in deepwater activity. This paper presents a thermo-hydraulic model of a twin-screw multiphase pump developed to determine important parameters such as: volumetric efficiency, absorbed power, discharge conditions, heat transfer and pressure and temperature profiles. The continuous movement from suction to the discharge of pump chambers is divided in small discretive steps. This division allows the calculation of energy and mass balances for each screw chamber. At each step, it is possible to calculate mass and energy that enters and leaves one chamber. With this balance, pressure and temperature for the next step can be calculated. Differently from previous model, it considers not only water-air but also hydrocarbon mixtures (including petroleum heavy fractions) as working fluids. Besides, inclusion of screw rotation influence over peripheral backflow is not neglected as in previous models.
机译：对双螺杆多相泵进行了研究，作为替代传统设备（流体分离，液体泵送和气体压缩）的常规设备，以增强石油。通过将气体和液体“一起泵送”，多相泵可以降低生产成本，特别是在深水作业中。本文介绍了一种双螺杆多相泵的热工液压模型，该模型用于确定重要参数，例如：容积效率，吸收功率，排放条件，传热以及压力和温度曲线。从吸气室到排气室的连续运动分为小的离散步骤。这种划分允许计算每个螺杆腔的能量和质量平衡。在每个步骤中，都可以计算进入和离开一个腔室的质量和能量。利用这种平衡，可以计算出下一步的压力和温度。与以前的模型不同，它不仅考虑水-空气，还将烃混合物（包括石油重质馏分）视为工作流体。此外，丝杠旋转对周边回流的影响不容忽视。

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