中转站输油系统的动力利用率，是电机效率、泵效率和管网效率的乘积。常规的且在管网无漏失和结垢现象的情况下，管网效率是输油泵出阀阀后压力与出口压力之比值。按此计算管网效率，对同一中转站，在运行工况不变的情况下，两次测算的动力利用率有相当明显的变化。但当管网效率取输油泵后节流调节机构之后的压力与泵出口压力之比值时，实测知它能真实地反映输油系统动力利用率的变化情况。 The power utilization of the oil transfer system at the transfer station is the product of motor efficiency, pump efficiency and pipe network efficiency. Conventional and in the pipe network without loss and scaling phenomenon, the pipe network efficiency is the ratio of the output pressure of the delivery valve to the outlet pressure. Click here to calculate the efficiency of the network, the same transfer station, the operating conditions remain unchanged, the two estimates of the power utilization rate has been quite significant changes. However, when the efficiency of the pipe network is taken as the ratio of the pressure after the throttling adjustment mechanism to the pump outlet pressure, the measured value can truly reflect the change of the power utilization rate of the oil delivery system.