论文部分内容阅读
正确预测储油罐收油作业时爆炸危险区域的范围,对确保油库运行安全具有重要意义。通过建立储油罐气体扩散的数学模型和物理模型,采用数值模拟方法,综合考虑油料性质、泄放速率、泄漏口形状与位置以及气象因素的影响,模拟了储油罐收油作业真实场景下油气的扩散过程;给出了环境温度为25℃、距地面2 m、风速为3 m/s、大气稳定度为D、环境湿度为75%、流量为200 m3/h时,汽油储罐的危险区域范围。在罐顶作业时,距罐顶的垂直距离为0.823 m,距透气阀中心8.242 m的范围内均为危险区域。将数值模拟结果与经验公式计算结果进行比对,前者更接近实测值,进一步验证了该方法的准确性。
Correctly predicting the scope of the explosion danger zone when the oil storage tank is in operation can be of great significance for ensuring the operation safety of the oil depot. Through the establishment of the mathematical model and physical model of gas diffusion in oil storage tanks, numerical simulation method was used to simulate the real situation of oil collection operation of oil storage tank, taking into account the properties of oil, the discharge rate, the shape and location of leakage ports and meteorological factors The process of oil and gas diffusion is given. The results show that when the ambient temperature is 25 ℃, 2 m above the ground, the wind speed is 3 m / s, the atmospheric stability is D, the ambient humidity is 75% and the flow rate is 200 m3 / h, Hazardous area range. When working on the tank top, the vertical distance to the roof of the tank is 0.823 m and within 8.242 m from the center of the vent valve are all hazardous areas. The results of numerical simulation and empirical formula are compared, the former is closer to the measured value, further verifying the accuracy of the method.