基于环网理论的供热管网水力工况仿真研究  

Simulation research on the hydraulic condition of heat supply network based on the theory of ring network

作　　者：田贯三[1] 邰传民 葛长海 张文豪 TIAN Guansan;TAI Chuanmin;GE Changhai;ZHANG Wenhao(School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China;Rizhao Public Utility Service Center, Rizhao 276826, China)

机构地区：[1]山东建筑大学热能工程学院,山东济南250101 [2]日照市公用事业服务中心,山东日照276826

出　　处：《山东建筑大学学报》2020年第5期1-7,共7页Journal of Shandong Jianzhu University

基　　金：“十二五”国家科技支撑计划项目(2012BAJ15B05)。

摘　　要：供热系统普遍存在水力工况失调问题,影响供热质量和节能效果,而对供热管网水力工况开展仿真研究,是调节和改造管网运行、优化设计的前提和重要保障。文章基于环网理论,建立了供热管网数学模型,构建了迭代矩阵Mk求解模型,利用VC语言开发了热水管网计算分析系统,并针对潍坊某县级市供热管网的水力工况进行应用研究。结果表明:仿真计算结果与实际运行测试结果吻合;管网水力平衡调节后,循环水量约降低了18.0%;在保证供热系统平衡的前提下,提高供回水温差3.0℃且降低循环流量18.1%,能够使泵功率降低45.1%;并联增设一条DN400供热管道的实施方案,可使供热系统输送能力提高>30.0%,方案实施后采暖季供热效果良好。There is a common problem of hydraulic condition imbalance in heating system,which affects the heating quality and energy saving effect.The simulation study on the hydraulic condition of the heating pipe network is the premise and important guarantee for the operation regulation,transformation and design optimization of the pipe network.Based on the circle theory,the mathematical model of heating network is established,the iterative matrix(Mk)solution model is constructed,and the calculation and analysis system of hot water network is developed by VC language.The results show that the simulation results are consistent with the actual operation test results.After the hydraulic balance of the pipe network is adjusted,the circulating water volume is reduced by about 18.0%.On the premise of ensuring the balance of the heating system,the heating scheme of increasing the water temperature difference between supply and return water by 3.0℃and reducing the circulating flow by 18.1%can reduce the pump power by 45.1%.The implementation scheme of adding a DN400 heating pipeline in parallel can increase the transmission capacity of the heating system by more than 30%,and the heating effect is good in the heating season after the implementation of the scheme.

关 键 词：供热管网 水力工况 仿真分析 水力平衡 

分 类 号：TU833[建筑科学—供热、供燃气、通风及空调工程]