2024-05-20 13:48:15 评论: 点击:
The plastic coated composite steel pipes for fire protection system water supply are divided into circular pipe network water supply system plastic coated composite steel pipes and branched pipe network water supply system plastic coated composite steel pipes according to the layout of the pipeline network. 1. Coated plastic composite steel pipes for circular pipe network water supply systems: In a planar layout, coated plastic composite steel pipes are used for pipe network water supply systems that form several closed loops, which are called coated plastic composite steel pipes
消防系统给水涂塑复合钢管按管网布置形式分为环状管网给水系统涂塑复合钢管和枝状管网给水系统给水涂塑复合钢管。1.环状管网给水系统用涂塑复合钢管:在平面布置上,形成若干闭合环的管网给水系统用涂塑复合钢管,称为环状管网给水系统用涂塑复合钢管。由于环状管网的干线彼此相通,水流四通八达,供水安全可靠,并且其供水能力比枝状管网供水能力大1.5-2.0倍(在管径和水压相同的条件下),因此,在一般情况下,凡担负有消防给水任务的给水系统管网,均应布置成环状管网,以确保消防给水。
2.枝状管网消防给水系统用涂塑复合钢管:管网在平面布置上,干线成树枝状,分枝后干线彼此无联系的管网给水系统用涂塑复合钢管,称为枝状管网给水系统用涂塑复合钢管。由于枝状管网内,水流从水源地向用水单一方向流动,当某段管网检修或损坏时,其下游就无水,将会造成火场供水中断,因此,消防给水系统不应采用枝状管网消防给水涂塑复合钢管系统。