Abstract: Massive electric charges will be generated due to the contact of oils flowing in the non⁃metallic pipeline with the inner wall of the pipeline. Excessive charge gathering discharge will cause spark discharge, which will lead to perforation of the pipe wall and fire, and seriously affect the normal production. Through analysis on the cause of static electricity and influencing factors, it is easy to find that the electrification rate is influenced by the oil flow rate, temperature, water content, pipe material and roughness. The results show that there is a positive correlation between the electrification rate and the oil flow rate, between the electrification rate and the pipe roughness; the rise of oil temperature adversely affects the accumulation of oil static; the electrification rate grows with the moisture content in a certain content range, and decreases with the increase of water content beyond the range; in combination with the existing experiment data, an oil flow⁃induced static model is built.

Key words: Oil, Non?metallic pipe, Charge, Flow rate, Temperature, Moisture content

摘要： 油品在非金属管道内流动过程中和管道内壁面发生接触产生大量的电荷，过量电荷聚集放电会产生火花导致管壁的穿孔以及引起火灾，严重影响正常生产。对其静电产生的原因及影响因素进行分析可知，起电速率受油品流速、温度、含水率、管线材质及粗糙度影响。结果表明，起电速率与油品流速呈正相关；油品温度的升高不利于油品静电的积累；在一定含水率范围内起电速率随着含水率的上升而逐渐增大，超过反向点后呈相反趋势；起电速率与管线粗糙度呈正比；并结合已有实验数据，建立油品流动静电模型。

关键词: 油品, 　非金属管道, 　电荷, 　流速, 　温度, 　含水率