油品管输带电问题  

Issues on Static Electrification by Oil Products Flow through Pipelines

作　　者：蒲家宁[1] 王菊芬[1] 

机构地区：[1]后勤工程学院军事供油工程系,重庆400016

出　　处：《后勤工程学院学报》2006年第2期1-5,共5页Journal of Logistical Engineering University

基　　金：国家自然科学基金资助项目(50175108)

摘　　要：以油品管输带电问题为专题，参考大量国外文献，结合笔者近年的研究，以便于石油储运工程技术人员掌握、应用和研究为目的，阐明油流带电的原因是油品与管壁接触后产生双电层，油流带走扩散层中的电荷形成冲动电流；论述冲动电流大小与油品物性、管道结构、油流速度等因素的关系；指出金属管道接地可消除管壁电荷、防止电荷聚积，但不能导走油流里的电荷；说明绝缘管道的要害是管壁会聚积电荷，可能导致刷形放电和击穿放电，缩短管子寿命，危厦管输安全。Taking flow electrification of oil products through pipelines as the special topic, referring to a series of foreign papers, in combination with our recent studies and with the purpose of benefiting the people working in oil storage and transportation engineering sector to guard against electrostatic hazards, the paper explains that, the phenomenon of flow electrification is due to the convection of charges coming from the electrical double layer at the liquld/solid interface, and the degree of stream- ing electrification depends on factors such as oil properties, pipeline structure, and flow velocity; in the case of metal pipe, grounding allows the charges in the wall to neutralize immediately with the opposite charges in the ground , but has no effects on the relaxation of charges in the flow; in the case of insulating pipe, charges can acctunulate at the liquld/solid interface, and when the accumulation is high enough, brash discharge or spark discharge may occur, resulting in shortening pipe age and damaging transportation safety.

关 键 词：成品油 管输 静电 绝缘管道 

分 类 号：TE832[石油与天然气工程—油气储运工程]