大电流开关柜热管散热实验研究

发布时间：2018-07-03 04:40

本文选题：热工学 + 开关柜　；参考：《合肥工业大学学报(自然科学版)》2017年11期

【摘要】：作为重要输电设备的大电流开关柜,其关键部件静触头安装于树脂塑料触头盒内,空气对流空间狭小,散热效果较差,容易引发开关触头的过热、剧烈氧化和烧融等故障现象,给供电系统的安全性和可靠性带来隐患。为了强化开关柜静触头的散热,控制其温升达到国家相关行业标准的要求,文章以KYN44A-12大电流开关柜为研究对象,设计了3种形式的热管散热装置,安装于触头盒内以强化静触头的散热能力;利用光纤温度在线监测系统,对安装有热管的开关柜静触头温升进行了实验研究。实验结果表明,热管蒸发段的结构形式对开关柜静触头的散热有着重要的影响,采用蒸发段呈"L"形结构的热管换热器,散热效果明显,使开关柜母线室及电缆室内静触头的温升得到了有效控制。
[Abstract]:As an important transmission equipment, high current switchgear, its key component static contact is installed in the resin plastic contact box, the air convection space is narrow, the heat dissipation effect is poor, it is easy to cause the switch contact overheating, violent oxidation and burning and melting, etc. It brings hidden trouble to the safety and reliability of power supply system. In order to strengthen the heat dissipation of the static contact of the switchgear and control its temperature rise to meet the requirements of the relevant industry standards of the country, this paper takes the KYN44A-12 large current switchgear as the research object and designs three kinds of heat pipe heat dissipation devices. In order to strengthen the heat dissipation ability of the static contact, the temperature rise of the switch cabinet installed with heat pipe is studied experimentally by using the optical fiber temperature on-line monitoring system. The experimental results show that the structure of the evaporative section of the heat pipe has an important effect on the heat dissipation of the static contact of the switchgear. The heat pipe heat exchanger with the "L" structure of the evaporation section has obvious heat dissipation effect. The temperature rise of the static contact in the busbar room and cable room of the switchgear has been effectively controlled.
【作者单位】：合肥工业大学汽车与交通工程学院;
【基金】：合肥工业大学产学研校企合作资助项目(K-GD2014-0767)
【分类号】：TM591

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