| 摘要 |
PURPOSE: A water supply device for supplying water and fire-fighting water is provided to control a rotary number and to efficiently supply a required amount of water by using a pressurizing tank and plural pumps. CONSTITUTION: A water supply device for supplying water and fire-fighting water is formed by: a water supply pressurizing tank(40) for a pressure sensor(17) to adjust water level by using a water level(36) and for air to pump stored water; a fire-fighting pressurizing tank(41) being connected to the water supply pressurizing tank for maintaining a certain pressure; air absorbing tanks(13), (14) of a venturi pipe shape for supplying air to the pressurizing tanks; plural pumps(1), (2), (3), (4), (5), (6) for supplying water to the pressurizing tanks and for directly supplying water to a consumer at the same time in case of lowering the water level in the pressurizing tanks by controlling a rotary number and by being driven sequentially; water distributing headers(47), (48) for supplying the water being supplied from the pressurizing tanks to branched water supplying pipes(49), (50), (51); and a control panel(54) including a non-power breakage power supply device(55).
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