基于余热回收的悬索桥主缆除湿防腐系统节能分析与实验研究  

Analysis and Experiment Research on Dehumidification and Anti-corrosion System of Main Cable of Suspension Bridge Based on Waste Heat Recovery

作　　者：彭关中[1] 缪小平[1] 范良凯[1] 贾代勇[1] 刘文杰[1,2] 马喜斌[1] 

机构地区：[1]解放军理工大学工程兵工程学院,南京210007 [2]广州军区空军勘察设计研究院,广州510052

出　　处：《建筑科学》2011年第2期33-37,共5页Building Science

基　　金：交通运输部2008年度部省联合攻关项目(2008-353-332-170)

摘　　要：主缆是悬索桥最重要的受力构件之一,且是不可更换构件,被称为悬索桥的"生命线"。主缆长期暴露在大气环境中,经受着各种不利环境的侵蚀,导致主缆钢丝易产生锈蚀。主缆除湿防腐系统将干燥空气送入主缆,降低主缆内的空气湿度,从而避免主缆钢丝锈蚀,提高了主缆钢丝的使用寿命。本文阐述了主缆除湿防腐系统的原理及组成,提出了一种基于余热回收的悬索桥主缆除湿防腐系统。搭建了测试热交换器性能的实验平台,实验结果表明当转轮除湿机再生风量是转轮除湿风量的1/3时,随着转轮除湿风量的增加,热交换器的换热效率增加,再生空气经过热交换器后空气温度升高,减少了再生电加热器的加热量,节约了主缆除湿防腐系统的能耗,因此采用余热回收技术有利于主缆除湿防腐系统的节能。Main cable is one of the most important bearing components of suspension bridge,and also the irreplaceable component,known as the ＂lifeline＂ of the suspension bridge.The main cable is exposed to the atmosphere for a long time,and withstands the erosion of various adverse environments,which results in the rust and corrosion of steel wire of main cable.The dehumidification and anti-corrosion system will send dry air into the main cable,reduce the air relative humidity,so as to avoid rust and corrosion of steel wire,and improve the service life.In this paper,the principle and composition of the dehumidification and anti-corrosion system of main cable were described,and a dehumidification and anti-corrosion system of main cable of suspension bridge based on the waste heat recovery was proposed.The test rig for testing the performance of heat exchanger was built up,and the experiment results indicated that when the regenerated air flowrate of the rotary dehumidifier was 1 /3 of the rotary dehumidification air flowrate,with the increase of the rotary dehumidification air flowrate,the heat exchange efficiency of the heat exchanger would be improved,the temperature of the regenerated air would rise through the heat exchanger,which would reduce the heating capacity of regeneration electric heater,and save the energy consumption of the dehumidification and anti-corrosion system of main cable.Therefore,the waste heat recovery technology was favorable for the energy conservation of the dehumidification and anti-corrosion system of main cable.

关 键 词：余热回收 悬索桥 主缆 除湿系统 实验研究 

分 类 号：TU111.48[建筑科学—建筑理论] TU279.72