平衡式复合齿轮泵的内部泄漏是影响其容积效率的主要原因。
The inner leakage, as the major factor, affects the efficiency of the cubage of the balanced compound gear pump.
根据建立的函数关系式，可直接计算泵的容积效率和所需的泵的体积排量，或迭代求出地面产液量。
Based on the established functional relation, the V_e and the required P_d can be calculated directly, or the total liquid production rate at surface can be calculated indirectly.
KOVATS方法是预测泵特性的传统方法，本文对其加以改进，用叶片尖端间隙数值解析法预测其中的容积效率。
A · DE · KOVATS method is a traditional method for forecasting the characteristics of pump. It has been improved in this paper.
泵阀弹簧断裂是高压大流量乳化液泵的另一种常见典型故障，极大地影响了乳化液泵的容积效率。
Pump valve spring fracture is another common typical fault of emulsion pump with high pressure and large discharge which reduces the volumetric efficiency of emulsion pump greatly.
更换转子后，泵的容积效率会相应产生变化。
After replacing the lobes it will be necessary to control or reset the final tolerances.
更换转子后，泵的容积效率会相应产生变化。
After replacing the lobes it will be necessary to control or reset the final tolerances.
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