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在火场供水中,水带是必不可少的供水器材,选择不同规格的消防水带进行供水,其效果各不相同。怎样才能以最少的能量损耗,来取得最佳的供水效果呢? 我们通常使用的消防水带、按其口径可分发50mm、65mm和75mm90mm四种。火场供水中主要采用大口径的水带,以便减少水带的沿程水头损失,把这一部分的能量节约起来,用于延长供水线路或增加压强和河量等。下表是不同类型水带的阻抗系做Sd值。
Water supply in the fire, water is an essential water supply equipment, choose different sizes of fire hose for water supply, the effect varies. How to get the best water supply with the least energy loss? The fire hose that we usually use, according to its caliber can be distributed four kinds of 50mm, 65mm and 75mm90mm. Large-scale water hoses are mainly used in fire water supply to reduce the water head loss along the water line and to save the energy of this part for extending the water supply line or increasing the pressure and the river volume. The following table is the impedance of different types of water with Sd value.