What is outdoor hydrant water supply system?
Outdoor fire hydrant water supply system is arranged on the outside of a building fire water supply pipe network of water supply facilities, mainly for fire engines from the municipal water supply pipe network or outdoor fire water supply network implementation of fire water, can also be directly connected with a hose and a water gun fire water, fire fighting is one of the important fire control facilities.
Composition of outdoor hydrant water supply system(1) the system is composed of five parts: water intake, water purification, storage, transmission and distribution, water supply and fire water supply.(2) the independent system is composed of four parts: water intake, water purification, water transmission and distribution and water supply in the fire.
Low pressure water supply network. Refers to the normal water pressure in the pipe network is low, the fire water pressure is formed by fire engines or other mobile fire pump pressure. Fire engines from the low pressure water supply network fire hydrant water intake, one is directly with suction pipe from the hydrant water absorption; two, with water belt fire hydrant, fire water tank to the water. In order to meet the need of water absorption of fire engines, the pressure of hydrant at the most disadvantageous point of low pressure water supply network shall not be less than 0.1MPa. This kind of pipe network is widely used in towns and residential areas.
Temporary high pressure water supply network. In the temporary high-pressure water supply pipeline, usually the water pressure is not high, through high-pressure fire water pump pressure, so that the pressure in the pipe network to meet the pressure requirements of high-pressure water supply pipeline. When the town, residential areas or units on a high-rise building, can be used for both outdoor and indoor fire water supply system of high pressure or temporary high pressure, can also be used for indoor and outdoor high-voltage or temporary high pressure fire water supply system for. Air pressure water supply equipment can only be counted as temporary high-pressure fire water supply system. General petrochemical plant, or liquid, flammable gas storage area in the use of this network.
High pressure water supply network. Refers to the pipe network often maintain sufficient pressure, the fire does not need to use fire engines or other mobile pumps pressurized, and directly from the fire hydrant out of the water hose, fire fighting. When the building height is less than or equal to 24m, high pressure water supply pipeline outdoor pressure should ensure the production, life, fire water to reach the maximum, and the highest water layout in the protection range of any building, gun full water column should not be less than 10m. When the building height is greater than 24m, the fire fighting equipment should be based on indoor fire fighting equipment.
