消防水泵自动启动信号及流量开关动作流量探讨

Discussion on automatic start signal of fire pump and flow switch operation flow

临时高压消防给水系统应根据系统稳压形式合理设置流量开关、压力开关。稳压泵的设计压力应以系统及时启动为根本设计依据,并保持系统最不利点处水灭火设施在准工作状态时的静水压力应大于0.15 MPa;系统稳压压力不宜超过水泵设计工况下的压力,不应超过系统工作压力。稳压泵的设计流量宜按消防给水设计流量的3%设计。流量开关应在系统最不利点一个灭火单元的出流量下动作,水箱稳压系统应避免在泄漏流量下误动作,稳压泵稳压系统应避免在稳压泵启动流量叠加泄漏流量下误动作。

The temporary high pressure fire water supply system should be reasonably set up the flow switch and pressure switch according to the system pressure regulation form.The design pressure of the pressure stabilizer pump should be based on the timely start of the system as the fundamental design basis,the design pressure of the pressure stabilizer pump should keep the static water pressure at the most unfavorable point of the system in the quasi-working state should be greater than 0.15 MPa,and the system pressure should not exceed the pressure under the design condition of the pump,and should not exceed the working pressure of the system.The design flow of the pressure regulator pump is designed according to 3%of the design flow of the fire water supply.The flow switch should operate under the discharge flow of a fire extinguishing unit at the most unfavorable point of the system,the tank pressure stabilizer system should avoid false operation under the leakage flow,and the pump pressure stabilizer system should avoid false operation under the start flow of stabilizer pump&leakage flow.