结构备用与输送能力备用——提高供热管网可靠性的基本途径

Structure and transportation ability reservations—Basic ways to improve the reliability of heating pipe network

介绍了供热系统可靠性评价关键指标、无故障工作概率和限额供热系数的计算方法与评价标准。基于可靠性分析理论和方法分析了哈尔滨市某实际供热管网的改扩建方案。结果表明,设计阶段通过合理增加连通管、调整管线路由以及扩径等手段,可以有效提升供热系统结构备用与输送能力备用特性;发生事故时通过合理关阀等手段对未停止供热用户实现限额供热,可以有效减少和控制停止供热用户的范围。

Presents the calculation method and evaluation standard for key index of reliability evaluation, probability of failure-free operation and limit heating coefficient for heating system. Analyses the reconstruction and expansion scheme of an actual heating pipe network in Harbin based on reliability analysis theory and method. The results show that it can improve the structure and transportation ability reservation characteristics of heating system by reasonably adding crossover pipe, adjusting pipe route and expanding pipe diameter in design process; and that it can effectively reduce and control the range of turned off heating users by reasonably closing valves and so on, to provide limited heat for not turned off heating users when fault occurs.