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在大型四角切向燃烧锅炉中 ,从四角燃烧器喷口喷出的射流总是要不可避免地偏离其设计方向 ,射流偏转的根本原因是由于射流两侧存在静压差 ,而射流的卷吸作用是射流两侧产生静压差的根源。本文根据射流的卷吸性质 ,运用理论分析的方法 ,计算出了燃烧器喷口射流两侧的静压差Δps,并找出影响压差Δps 的因素 ;计算出Δps 与射流流速u2 的关系 ,并用冷模实验对此结论作了验证
In a large square tangential fired boiler, the jet emanating from the corners of the combustor always inevitably deviates from its design direction. The fundamental reason for jerk deflection is due to the static pressure difference on both sides of the jet, and the entrainment effect of jet Is the source of static pressure difference generated on both sides of the jet. In this paper, according to the entrainment property of the jet, the static pressure difference Δps on both sides of the jet of the combustor is calculated by theoretical analysis, and the factors affecting the pressure drop Δps are found out. The relationship between Δps and the jet velocity u2 is calculated and used The cold mold experiment verifies this conclusion