基于反向漏风的地铁区间隧道并联通风机运行调节优化  

Operation adjustment optimization of parallel fan in subway tunnel based on reverse air leakage

作　　者：陈世强 李璟仪 张琼 朱祝龙 陈宜汉 朱重权 CHEN Shiqiang;LI Jingyi;ZHANG Qiong;ZHU Zhulong;CHEN Yihan;ZHU Chongquan(School of Resource,Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411201,Hunan,China;China Railway Tunnel Survey and Design Institute Co.,Ltd.,Tianjin 300133,China;AECOM Consulting(Shenzhen)Co.,Ltd.,Shenzhen 518000,Guangdong,China)

机构地区：[1]湖南科技大学资源环境与安全工程学院,湖南湘潭411201 [2]中铁隧道勘测设计院有限公司,天津300133 [3]艾奕康咨询(深圳)有限公司,广东深圳518000

出　　处：《安全与环境学报》2024年第4期1404-1411,共8页Journal of Safety and Environment

基　　金：国家自然科学基金项目(51864014);交通运输行业重点科技项目(2021-MS5-126);湖南省自然科学基金项目(2023JJ50232)。

摘　　要：为明确隧道运营期间并联通风机的调节依据,依托青岛地铁八号线大洋站至青岛北站区间隧道,搭建隧道通风系统模型。通过并联试验,测定了通风机变频频率、电功消耗值及相应风量,并以功率差值占比、通风效率为依据,探究并联通风机的反向漏风规律和最佳频率匹配范围。结果表明:由于管网结构的影响,并联通风机反向漏风存在抑制临界点;为避免反向漏风,并联通风机变频调速处于额定转速的30%~50%、>50%~70%、>70%~90%时,其功率差值占比不宜大于1.6%、6.1%、17.6%;并联通风机同型号同频率运行时,通风效率不一定最优,要使并联通风机增效减耗运行,风机变频调速宜处于额定转速的70%~90%且功率差值占比≤6%。频率匹配范围的确定可为隧道运营期间并联通风机的变频调节提供参考。To meet the ventilation and smoke exhaust requirements during the operation of long subway section tunnels,parallel operation of parallel fans can be adopted.However,the adjustment basis of parallel fans is not clear at present.Therefore,based on the tunnel between Dayang Station and Qingdao North Station of Qingdao Metro Line 8,this paper builds a tunnel ventilation model system.The frequency conversion value,electrical power consumption value,and corresponding air volume of the fan are measured through the parallel test of the fan.Based on the proportion of power difference value and ventilation efficiency,the reverse air leakage rule of the parallel fan,the maximum range of frequency matching without reverse air leakage,and the optimal range of ventilation efficiency are studied.The results show that due to the influence of pipe network structure,there is a critical point to restrain the reverse air leakage of parallel fans.To avoid reverse air leakage of parallel fans,when the frequency conversion speed regulation of the fan is at the rated speed of 30%50%,>50%70%,>70%90%,the power difference ratio should not be greater than 1.6%,6.1%,17.6%.When the parallel fans are of the same model and operating parameters,the ventilation efficiency may not be optimal,and the air output of the two fans may not be the same.To increase efficiency and reduce consumption of the parallel fans,the fan frequency conversion and speed regulation should be at the rated speed of 70%to 90%and the power difference ratio≤6%.The determination of the frequency matching range can provide a reference for frequency conversion regulation of parallel fans,which is conducive to improving unit efficiency and reducing energy consumption.

关 键 词：安全工程 区间隧道 双通风机并联 变频调节 反向漏风 通风效率 

分 类 号：X962[环境科学与工程—安全科学]