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稳压泵的压力设定值决定于稳压泵扬程,稳压泵的扬程一般不另行计算,而是采用消防主泵的扬程,其原因在于设置稳压泵的目的是使消防给水管网的水压稳定。而在集中稳高压给水系统中,这样确定的稳压泵扬程及设定压力值,往往使消防给水管网始终处于较高压力工况,因而使管网内水压与管道及其接口的承压能力这一对矛盾趋于突出。从保证最不利处灭火设施水压要求这一基本前提出发,提出确定稳压泵扬程和设定压力的新思路,并按3种情况分别作出说明。
The set pressure of the regulated pump is determined by the head of the regulated pump. The head of the regulated pump is not normally calculated. Instead, the head of the main pump of the fire is used. The reason is that the purpose of setting the regulated pump is to make the fire water supply network. Water pressure is stable. In the centralized high-pressure water supply system, the determined head and set pressure of the regulated pump often make the fire-fighting water supply network always in a higher pressure working condition, thereby ensuring the water pressure in the pipe network and the pipeline and its interface. The contradiction between pressure and pressure tends to be prominent. From the basic premise of ensuring the water pressure requirements of the most unfavorable fire extinguishing facilities, a new idea for determining the head and set pressure of the regulated pump is proposed, and explanations are made according to the three situations.