基于射流机理的直流水枪充实水柱特性研究

Research on characteristics of full water spout through fire nozzles based on jet mechanism

直流水枪主要应用于室内消火栓以及消防救援队伍遂行灭火任务,水枪的射流性能决定了其灭火的效能。而水枪的充实水柱Sk这一性能参数是评估直流水枪灭火能力的重要指标。本文分析了水枪充实水柱的影响因素,基于射流机理将水枪射流进行机制划分,阐述了直流水枪射流水柱的破碎过程,为消防水枪更有效地应用于灭火救援提供理论支撑。

Fire nozzles are mainly used for indoor fire hydrant and fire and rescue team to carry out firefighting task. The jet performance parameters of fire nozzles are important indexes to evaluate the fire extinguishing ability of fire nozzles. Under the given jet condition, full water spout(Sk) is an important index to evaluate the fire extinguishing ability of fire nozzles. In this paper, the influencing factors of full water spout are analyzed. Based on the jet mechanism, the mechanism of water jet of water gun is divided, and the forming and breaking process of water column are described. The full water spout is obtained, which provides theoretical support for the fire nozzles to be more effectively used in firefighting and rescue.