The fire hydrant is the basic facility for fire fighting in buildings. According to the caliber, there are fire hydrants and fire hose reels, and water guns, hoses, alarm buttons and fire hydrant boxes are used in conjunction with fire hydrants.
Installed on the indoor fire-fighting water supply pipeline to connect the hose to fire-fighting equipment. It is composed of the main body, hand wheel, palpable cover, etc. It is used in conjunction with the water gun and hose, and is generally installed in the fire hydrant box.
technical parameter
Commonly used nominal diameters are 65mm and 50mm, and the nominal diameter of the fire soft tube coiled pan head is 25mm.
Configuration of water gun and hose
① Configuration of water gun
② Generally, it is advisable to use chemical fiber lining glue tape with good anti-corrosion performance. The length of the hose can be divided into 15m, 20m, 25m, 30m, 40m. The fire hydrant in the front room of the fire elevator should be equipped with a shorter hose. The water belt for general buildings should not exceed 25m.
③ In a building, including the main building and podium of high-rise civil buildings, indoor fire hydrants and hoses of the same caliber should be used.
Hydrant box
According to the material of the door: all steel type, steel frame inlaid glass type, aluminum alloy frame glass type, and other materials.
According to the installation method: exposed installation, concealed installation, semi-concealed installation.
Various forms of hydrant boxes can be selected according to actual needs, equipped with corresponding indoor hydrants and accessories.
Key points of construction and installation
After the completion of the indoor fire hydrant water supply system, a fire hydrant test firing test should be conducted to test its use effect, but it cannot be fired one by one. Three representative locations are selected: the roof (in the north generally in the roof water tank, etc.) test fire hydrants and first Take two fire hydrants on each floor.
The construction unit often does not hang the hose on the pegs or hose reel in the fire hydrant box according to the regulations when the construction is completed, and puts the hose roll in the fire hydrant box for delivery. The construction unit must reinstall it after taking over, otherwise it will cause a fire. Affect.
The installation of box-type fire hydrants should meet the following requirements:
① The bolt should face outwards and should not be installed on the side of the door shaft for easy access.
② The center of the spigot is 1.1m from the ground, which meets the requirements of the current fire protection design code.
③ Control the distance between the center of the valve and the side and rear inner surface, and specify the allowable deviation. The allowable deviation of the verticality of the cabinet installation is given to ensure the quality of the project and the convenience of inspection.
For box-type fire hydrant installation, its spigot facing outwards should not be installed on the side of the door shaft for easy access; the center of the spigot is 1.1m from the ground to comply with the current fire protection design regulations.