摘要
随着变压器容量的日益增长,传统冷却方式在城市地下变电站的应用中日益显现出其不足之处。本文提出一种适用于城市变电站的新型变压器油-蒸发液冷却方式。它是一种二级冷却方式,可通过蒸发液相变汽化后的蒸汽把位于地下变电站内热负荷中心的热量转移至地上或房顶的二次冷却器内进行冷却;蒸发液的循环过程为无泵自循环,可靠性高,且冷却效率高、噪音水平低、冷却装置承重低。本文设计、制造了一台油-蒸发液换热器样机,通过传热实验验证了新型冷却方式的可行性,并将实验与理论计算结果进行了对比和误差分析。
Decades of experience in underground substations indicated that the traditional cooling technologies have their own shortcomings. Therefore, this paper presents a novel cooling technology, which could be considered as a two-step cooling system, and can effectively transport heat energy from thermal sources underground to radiators on the ground by phase changing of evaporative liquid in an oil-evaporative cooler. The self-circulation of evaporative liquid makes the whole cooling system of high reliability, high cooling efficiency and low noise. This novel cooling technology is verified by designing, founding and testing a prototype of oil-evaporative liquid cooling system on a thermal test platform. The experimental result is compared with theoretical calculation, and the error is analyzed.
出处
《电工技术学报》
EI
CSCD
北大核心
2014年第5期271-276,共6页
Transactions of China Electrotechnical Society
关键词
变压器冷却技术
低噪音
城市变电站
蒸发液
氟碳化合物
油-蒸发液换热器
Transformer cooling technology,low-noise,urban substation,evaporative liquid,fluorocarbon,oil-evaporative liquid cooler
