【 Weak current College 】 fire control pressurization equipment works---Power By 【 China power house network 】

1. use high fire water tank (for example the mountain high fire cistern) on fire boosting voltage. This system is known as high pressure fire prevention system, but in practice is rare.
2, use the top level in the building of high fire water tank for fire fighting pipe pressure regulator; press the "explanation" GB 50045 — 95, when the high fire water tank with water pressure will not be able to meet the most negative point of fire water pressure, you should set high fire water tank pressure. According to our current "doctrine" GB50045-95 and the architectural design fire protection standard "GBl6 — 87, interim fire protection water supply system under high pressure should be set to high fire water tank.
At this point it should be noted:
(1) regulator automatic start and stop the pump should be, and is controlled by settings in system pressure pipeline inspection device.
(2) should set the regulators pumps in the system at the top near the high water tank to reduce the voltage pump rated working pressure, saving energy.
(3) voltage pump group should be set to line pipe.
(4) on the sprinkler system, regulators pumps, pressure point should be located in the system of the water side. 3, located in the pump room dedicated voltage pump with pressure tank cooperative work on fire boosting voltage so that it is ready to fire.
(1) when the specification allows the use of pressure tank instead of high water tank, pressure tank must store the fire water in ten minutes, usually cannot be used, can only be used when the fire, usually known as the pressure tank to "tank", "tank" can only start and stop regulators pumps, regulators pumps generally does not require the use of its signal to start the primary pumps, more does not permit use of its signal to stop the master pump.
(2) "small tank" is defined as the specification requirements, combined with high water pressure and the pressure water sharing equipment set. The unit of pressure tank only storage fire early 30S fire hydrant water consumption, on, adjust the volume of the system is 2 pistol 30S water consumption, which is 2 × 5 (L/S) × 30 = 300 (L); on the sprinkler system, its adjustable volume for the 5 only standard of water sprinkler 30S, 5 × 1 (L/S) × 30 = 150 (L).
When using "small pot", the pressure tank to send start and stop regulators pumps of signal, but also to give start signal of fire control pump. The equipment up and running, the system hydraulic pressure will remain on the set of upper and lower limits (i.e. voltage pump start-up and shut-down pressure), when the system pressure pipeline leak, down to the lower limit setting pressure P2, voltage pump start automatically, on the pipeline to supply water regulator for fire service guarantees the most adverse distribution point fire required pressure, when the system pressure reaches the set pressure limit P1 stops working when regulators pumps, pressure drop at a time, will repeat the above operation, to stabilize the fire pipe pressure and pressure tank of water volume. Fire water, regulators pumps running blocks hold pressure drop, when the system pressure drop to the fire main pump start pressure P3, the electronic control system emits a beep signal to start the fire main pumps for water supply, when the fire main pump operation reaches the rated flow and pressure control shutting down when voltage pump running. When a single fire pump operation could still prevent pressure drop, the system pressure is reduced to a minimum pressure of fire, the fire P4 spare pump start.