The water pump adapter is an indispensable and important device in the indoor fire water supply system. The function of the water pump adapter is: when the indoor fire pump fails or encounters a large fire, and the indoor fire water is insufficient, it is used for the fire truck to suck water from the outdoor fire hydrant or fire pool through the water pump to connect The water is sent to the indoor fire-fighting water supply pipe network for fire fighting. For example, in the event of a fire in a high-rise building, after the fire brigade arrives, it is necessary to supply water to the fire pump adapter at the first time according to the situation on the spot, so as to effectively control the fire and extinguish the fire in time. For this reason, the reasonable setting of the water pump adapter not only saves the investment cost, but more importantly, it is convenient for the fire brigade to operate and use, which is conducive to rapid water supply and fire fighting.
water pump adapter
The fire-fighting water pump adapter is the interface for the fire truck to take water from the outdoor water source to the indoor pipe network, which is divided into ground type, underground type and wall type. The installation of the water pump adapter must reflect the principles of correct design, reasonable layout and convenient operation. According to GB50045-95 "Code for Fire Protection Design of High-Rise Civil Buildings", when the firefighting water supply is vertical partitioned water supply, the partitions within the pressure range of the fire truck's water supply should be equipped with water pump adapters. The buildings where pump adapters should be installed include workshops and warehouses with more than 4 floors, high-rise industrial buildings (including workshops and warehouses), residential buildings with fire-fighting pipe networks, and other civil buildings and high-rise civil buildings with more than 5 floors. Low-rise buildings with a building height of not more than 24m and buildings with a volume of more than 10,000m3 should also be equipped with water pump adapters.
Setting requirements of water pump adapter:
1. The installation of the fire-fighting water pump adapter should be carried out in the order of interface, body, connecting pipe, check valve, safety valve, vent pipe, and control valve. The installation direction of the check valve should be such that the fire-fighting water can be connected from the fire-fighting water pump. The installation of the integral fire-fighting water pump adapter should be carried out in accordance with the installation manual.
2. The position of the water pump adapter should be located on the sidewalk that is convenient for fire trucks or non-motorized vehicles, and the distance from the outdoor fire hydrant or fire pool should not be less than 15m, and should not be greater than 40m.
3. The flow rate of each water pump adapter is calculated at 10/s~15L/s, and the number of water pump adapters is calculated according to the indoor fire water consumption. If the high-rise building adopts the vertical partition water supply method, each partition should be equipped with a water pump adapter
4. The permanent fixed mark of the water pump adapter should be able to identify the corresponding fire water supply system or water fire extinguishing system. When there is a zone, there should be a zone mark. The valve well cover of the underground water pump adapter should be cast with a "fire pump adapter" sign, and a permanent fixed sign indicating its position should be set nearby. The distance between the bottom surface of the well cover and the adapter to the water inlet should not be greater than 0.4m, and It should not be smaller than the radius of the manhole cover. The above-ground water pump adapter shall be provided with a fixed mark that is different from the above-ground fire hydrant.
5. The installation of the wall-mounted water pump adapter should meet the design requirements. When the design drawings do not specify specific requirements, the installation height should be 0.7m from the ground; the net distance from the doors, windows, holes and holes on the wall should not be less than 2.0m, and should not be installed under the glass curtain wall.
6. In order to prevent the water in the indoor fire water supply pipe network from flowing backward when the valve of the water pump adapter is opened, a check valve should be installed on the pipe section connecting the water pump adapter, and a gate valve and a drain valve for maintenance should also be installed. The valve of the water pump adapter should be able to be operated outside the building, and there should be protective facilities and obvious signs
7. There should be no obstacles that hinder the pressurized water supply of fire trucks between the fire hydrant pump adapter and the fire passage. The masonry of the underground fire pump adapter well shall have waterproof and drainage measures.
