摘要
冻雨是较为严重的自然灾害之一,短时间内就可以在物体表面结附大量的冰,尤其对输电线路和塔架,可造成输电线路断裂,导致严重的冰冻灾害。实验在已有的过冷水动态制冰系统的基础上,成功实现人工环境下的冻雨模拟,同时对不同材料的管材进行对比实验,观察其表面结冰情况,分析不同管材的抗冻雨性能,结果表明:在相同的条件下,表面结附冰层的厚度从厚到薄依次为天然橡胶、氯丁橡胶、丁腈橡胶、硅橡胶(壁厚为3mm)、硅橡胶(壁厚6mm):表面结冰的粘附性强弱排序同上;表面最先出现结冰附着的为天然像胶,其次为丁腈橡胶和氯丁橡胶,最后为硅橡胶。抗冻雨性能最佳的为硅橡胶(壁厚6mm),最差的是天然橡胶。
Freezing rain is one of serious natural disasters which leads to fracture of electricity transmission lines. The simulation of freezing rain in artificial environment was performed with an existing dynamic ice-making system by supercooled water. The comparison experiment was conducted for the pipes with different material, and the ice coating on the pipes and the anti-freeze performance of the different pipes were observed. The experimental results indicate that at the same condition, the ice thickness and adhesiveness occurred on the natural rubber pipe were greatest while they were smallest on the silicone rubber pipe with the wall thickness of 6mm. The ice coating appeared on the natural rubber pipe first and on the silicone rubber pipe latest. It seems that silicone rubber may have best performance to resist freezing rain.
出处
《制冷学报》
CAS
CSCD
北大核心
2009年第3期25-29,共5页
Journal of Refrigeration
基金
中国科学院知识创新工程重要方向项目资助(KGCXZ-YW-345)~~
关键词
热工学
冻雨
过冷水动态制冰
抗冻雨性
Pyrology
Freezing rain
Dynamic ice-making by Super cooled water
Anti-freezing rain performance
