储罐温度分布对计量精度的影响

发布时间：2018-02-13 04:31

本文关键词： 储罐原油计量计量精度误差温降模型　出处：《油气储运》2017年11期 　论文类型：期刊论文

【摘要】：针对储罐温度分布影响计量精度而导致计量误差的问题,基于对罐内油品与外界环境传热过程的分析,建立了考虑环境温度、油品物性、罐内油品自然对流及太阳辐射等因素影响的储罐温降模型。以某储备库1#浮顶罐为例,采用Fluent软件对储罐温降模型进行模拟,并将计算温度与实测温度进行对比。进而总结得出油孔纵向平均油温与罐内总体平均油温温差变化的规律:在相同外界条件下,液位越低,温降速率越大;液位越高,存储时间越长,量油孔处的平均油温偏离总体平均油温越大。通过不同工况下的实例计算,量化分析了上述误差的大概范围和变化趋势,对油库的计量盘点具有一定的参考价值。
[Abstract]:In view of the problem that the temperature distribution of the tank affects the measuring accuracy and resulting in the measurement error, based on the analysis of the heat transfer process between the oil products in the tank and the outside environment, the consideration of the environmental temperature and the physical properties of the oil products is established. The temperature drop model of oil tank affected by natural convection and solar radiation in oil tank. Taking a floating roof tank as an example, the temperature drop model of storage tank is simulated by Fluent software. By comparing the calculated temperature with the measured temperature, the variation law of the longitudinal average oil temperature of the oil hole and the total average oil temperature in the tank is concluded: under the same external conditions, the lower the liquid level, the greater the temperature drop rate, and the higher the liquid level. The longer the storage time, the greater the deviation of the average oil temperature from the total average oil temperature. Through the calculation of examples under different working conditions, the general range and variation trend of the above errors are quantitatively analyzed. It has certain reference value to the metering and inventory of oil depot.
【作者单位】：冀东油田油气集输公司南堡联合站;
【基金】：国家科技重大专项“钻井协同自动控制系统研发”,2016ZX05022006-004
【分类号】：TE863.1

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