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目前《给水排水设计手册》中所介绍的特性系数法水力计算仅适用于系统为对称布置的情况,导致对于非对称布置系统应用特性系数法进行水力计算存在困难。通过对管系特性系数的实质和影响因素进行理论分析,提出了利用虚拟节点水压和虚拟节点流量来计算非对称布置情况下非最不利配水支管管系特性系数的方法,完善了特性系数法在自动喷水灭火系统水力计算中的应用,使特性系数法可适用于各种布置形式的自动喷水灭火系统水力计算。
At present, the hydraulic calculation of the characteristic coefficient method introduced in the Manual of Water Supply and Drainage Design is only applicable to the situation where the system is symmetrical arrangement, which makes it difficult to apply the characteristic coefficient method for hydraulic calculation in the asymmetrical arrangement system. Through the theoretical analysis of the essence and influence factors of pipe coefficient coefficient, a method to calculate the coefficient of pipe coefficient of non-most unfavorable water distribution branch pipe by using the pressure of virtual node and the flow of virtual node is proposed, and the characteristic coefficient method The application of automatic sprinkler system in hydraulic calculation makes the characteristic coefficient method applicable to the hydraulic calculation of sprinkler systems in various layouts.