摘要
采用理论解析与数值模拟相结合的方法,深入研究气体绝缘输电线路(GIL)管廊的通风系统。以某地下GIL管廊项目为背景,该项目采用自然进风与机械排风相结合的通风方式,通过余热排除法和基于换气次数的计算方法,确定夏季管廊所需的适宜通风量。依据GIL管廊的结构特性,构建相应的物理与数学模型,并合理设定初始条件与边界条件。模拟并分析不同通风量条件下管廊内部的温度分布情况,并对不同换气次数下呼吸带区域的温度变化趋势进行探讨。结果表明,管廊沿Z轴方向的空气温度呈逐步上升的趋势,且顶部温度普遍高于底部。当采用余热排除法计算的风量进行模拟时,管廊末端出现超出规范的高温气体。研究成果为GIL管廊通风系统的设计与优化提供了参考,有助于推动通风系统在实际应用中的发展。
The ventilation system of the gas insulated transmission line(GIL)tunnel is deeply studied by combining theoretical analysis with numerical simulation.Based on the underground GIL tunnel project,this project adopts a ventilation method combining natural air intake and mechanical exhaust.Through the waste heat removal method and the calculation method based on the air change rate,the appropriate ventilation volume required for the tunnel in summer is determined.Based on the structural characteristics of the GIL utility tunnel,corresponding physical and mathematical models are constructed,and the initial conditions and boundary conditions are reasonably set.Simulate and analyze the temperature distribution inside the pipe gallery under different ventilation volumes,and discuss the temperature variation trend in the breathing zone area under different air change rates.The results show that the air temperature along the Z-axis of the pipe gallery is gradually rising,and the temperature at the top is generally higher than that at the bottom.When the air volume calculated by the waste heat elimination method is used for simulation,high-temperature gas exceeding the specifications appeared at the end of the pipe gallery.The research results provide a reference for the design and optimization of the ventilation system in the GIL tunnel,which is conducive to promoting the development of the ventilation system in practical applications.
作者
马秀婷
张文科
姚海清
王康悦
许斌
高玉雪
MA Xiuting;ZHANG Wenke;YAO Haiqing;WANG Kangyue;XU Bin;GAO Yuxue
出处
《节能》
2025年第8期67-71,共5页
Energy Conservation
基金
国家重点研发计划项目(项目编号:2017YFB0902100)。
关键词
地下管廊
GIL
通风
换气次数
数值模拟
余热排除法
underground pipe gallery
GIL
ventilation
air exchange rate
numerical simulation
waste heat removal method
