供热管道动态特性分析  

An Analysis on the Dynamic Performance of Heat Supply Pipeline

作　　者：赵金峰 王占洲[2] 李勇[2] 姚莹莹 ZHAO Jin-feng;WANG Zhan-zhou;LI Yong;YAO Ying-ying(Electric Power Research Institute,State Grid Jilin Electric Power Company Limited,Changchun 130021,China;School of Energy and Power Engineering in Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]国网吉林省电力有限公司电力科学研究院,长春130021 [2]东北电力大学能源与动力工程学院,吉林132012

出　　处：《汽轮机技术》2018年第1期23-26,5,共5页Turbine Technology

基　　金：吉林省科技发展计划项目(20160203008SF)

摘　　要：针对风能、太阳能等间歇能源发电并入电网导致热电联产机组降低电负荷而影响供热效果问题,在考虑供热管道自身蓄热能力的基础上,通过建立供热管道动态数学模型,对供热管道进口水温突变、供热管道保温层厚度变化的情况进行计算分析,得到供热管道金属壁温、保温层壁温以及供热管道出口水温随时间的动态变化过程,并计算出供热管道出口水温重新达到稳定状态时的温度和时间。In order to satisfy heat supply,the cogeneration units have to decrease loads when renewable energy joins power grid.According to the problem,this article establishes a dynamic mathematical model of heat supply pipeline for analyzing its performance when the inlet water temperature and the insulating layer thickness of heat supply pipeline change.Then a series of dynamic curves about metal pipe wall temperature,insulating layer wall temperature and the export water temperature of heat supply pipeline can be got.The export water temperature and time can also be calculated when the export water temperature of heat supply pipeline reaches a stable state.

关 键 词：供热管道 动态特性 蓄热能力 稳定时间 

分 类 号：TK261[动力工程及工程热物理—动力机械及工程]