单热源枝状分布式水泵供热系统故障工况分析.pdfVIP

专题 　 单热源枝状分布式水泵供热 研讨 　系统的故障工况分析 ☆ 哈尔滨工业大学 　范亚伟 　王 　芃 　邹平华 摘要 　分析了该系统中某用户加压泵发生故障时 ,其支路的处理措施 , 以及为保持其他用 户支路流量不变 ,热源和其他用户支路的水泵或阀门需做出的调整 ; 热源循环水泵发生故障 时 ,供热系统实现故障工况限额供热的可行性 , 以及用户加压泵的性能曲线和零压差点位置对 故障工况限额供热能力的影响。给出了用户加压泵的选型原则及热源循环水泵是否配置备用 泵的依据。 关键词 　分布式水泵供热系统 　故障工况 　限额供热 　零压差点 m Fa il ure c o n diti o n a n a l ysis of tr e es h a p e d distri b ut e d o p u m p h e a ti n g s yst e m s wit h a si n gl e h e a t s o ur c e c ★ . By Fan Yawei , Wang Peng and Zou Pinghua g Abst ra ct 　Discusses t he handling measures f or t he p ressure p ump f ailure occurred in a user branch and n t he adjust ments of t he p ump or valve in heat source and ot her user branches needed t o keep t he constant flow o in t hose branches , and t he p racticability of limited heating w hen t he heat source circulating p ump f ailed and l t he influence of perf ormance curves of user p ressure p ump and zero p ressure diff erence p oint on t he heating u cap acity in t he limited heating op eration. Provides t he selection p rinciple of user p ressure p ump and t he basis h f or t he standby p umps. z Keywords 　heating system wit h dist ributed p umps , f ailure condition , limited heating , zero p ressure diff erence p oint w. ★ Harbin Institute of Technology , Harbin