寒冷地区核电厂地下廊道的防冻分析

Freeze-preventions Analysis of Pipe Gallery in Cold Region Nuclear Power Plant

核电厂地下廊道主要承担电厂最终热阱用水管道和综合技术管道的布置,是核电厂重要设施之一。对于寒冷地区核电厂的地下廊道设计,除了保证廊道正常的给排水、照明、消防、通风换气等要求外,还需考虑低温对廊道内管道和仪表的影响,避免由于环境温度过低造成廊道内管道或仪表冻结而影响电厂的正常运行。结合红沿河核电厂土壤温度计算和地下廊道气温的CFD模拟,得到了地下廊道几种防冻措施的气温分布,并提出了地下廊道防冻分析方法和防冻保护措施。

The pipe gallery in nuclear power plant taking on the disposal of final heat trap pipeline and polytechnic pipeline, they＇re the main composed of the nuclear power plant. For the design of pipe gallery in nuclear power plant, besides it has the necessarily water supply and drain, lighting, fire protection, ventilation, also it must be taking into account the low temperature effect on pipe and instrument, avoid freezing of the pipe and instrument consequently effect on the operation of power plant. Combine the soil temperature calculation and air temperature CFD simulation in Hongyanhe nuclear powers plant, getting the air temperature distribution by some freeze-prevention measure in pipe gallery. Finally put forward the method of freeze-preventions analysis and measure of freeze-preventions.