流体机械2017，Vol.45Issue(4)：43-48,6.DOI:10.3969/j.issn.1005-0329.2017.04.009
冷却型高温熔盐旋转接头的热设计与热分析
Thermal Design and Analysis of Cooling-type High Temperature Molten Salt Rotary Joints
摘要
Abstract
Paddle heat exchangers with steam or heat transfer oil as working fluid are usually employed in material heating (e.g.,drying) in the range less than 300℃.By using nitrate salt mixture as working media,the top working temperature can reach nearly 600℃.However,sealing failure of the rotary joints is one critical problem.To solve this problem,cooling-type rotary joints are designed and the temperature-reducing performance of heat insulation,air-cooling and liquid-cooling is calculated by numerical simulation.The results show that it is hard to reduce the sealing region temperature of the rotary joints to conventional working temperature by merely using heat insulation or air-cooling.By using liquid-cooling,combined heat insulation and air-cooling or combined heat insulation and liquid-cooling,the sealing region temperature can decrease below conventional working temperature.The combined heat insulation and liquid-cooling method behaves the best in cooling which can be applied in design of molten salt paddle heat exchangers.关键词
高温旋转接头/密封区/隔热/风冷/液冷Key words
high temperature rotary joint/sealing region/heat insulation/air-cooling/liquid-cooling分类
机械制造引用本文复制引用
丁军丹,刘心志,张后雷..冷却型高温熔盐旋转接头的热设计与热分析[J].流体机械,2017,45(4):43-48,6.
