BF型瓦斯继电器内部流场模拟及误动原因分析  

BF Buchholz Relay Internal Flow Field Simulation and Analysis of Malfuction

作　　者：李胜男 兰昊[2] 周鑫 张思青[2] 韩冬冬[2] 刘明亮[2] 

机构地区：[1]云南电网有限责任公司电力科学研究院,云南昆明650217 [2]昆明理工大学冶金与能源工程学院,云南昆明650093

出　　处：《电器与能效管理技术》2016年第19期12-17,共6页Electrical & Energy Management Technology

基　　金：国家自然科学基金项目(51369012)

摘　　要：应用流体仿真软件Fluent对BF型瓦斯继电器重瓦斯报警的过程进行数值模拟,研究其内部流场运动规律。仿真分析发现油流冲击挡板开启的过程中,通过追踪挡板转动力矩变化及挡板背后卡门涡街的脱落,发现加载在挡板上作用力上下波动幅度较大,并伴随着涡激振动。针对以上问题,提出了相应的改进意见及优化其内部结构缺陷的方法。In view of the Buchholz relay is frequent malfunction and that in practical tests oil flow velocity cannot be accelerated to its setting within 100 ms the fluid simulation software Fluent was applied to the BF Buchholz relay heavy gas alarm numerical simulation,to research on the movement of its internal flow field. The simulation analysis shows that in the oil flow impact opening process,by tracking damper rotational torque change and Karman vortex street shedding behind the damper,it is found that the load on the damper force fluctuates up and down,and accompanied by vortex-induced vibrations. The paper put forward some improvement suggestions and the methods to optimize the internal structure defects.

关 键 词：BF型瓦斯继电器 数值模拟 流场运动规律 结构优化 

分 类 号：TM581[电气工程—电器]