寒冷地区核电厂地下廊道的防冻分析

摘要

T he pipe gallery in nuclear pow er plant taking on the disposal of final heat trap pipeline and polytechnic pipeline,they’re the m ain com posed of the nuclear pow er plant.For the design of pipe gallery in nuclear pow er plant, besides it has the necessarily w ater supply and drain,lighting,fire protection,ventilation,also it m ust be taking into accountthe low tem perature effecton pipe and instrum ent,avoid freezing ofthe pipe and instrum entconsequently effect on the operation of pow er plant. C om bine the soil tem perature calculation and air tem perature C FD sim ulation in H ongyanhe nuclear pow ers plant, getting the air tem perature distribution by som e freeze-prevention m easure in pipe gallery.Finally putforw ard the m ethod offreeze-preventions analysis and m easure offreeze-preventions.%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C FD 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。