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

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.