土壤导热系数法测定魏荆输油管道总传热系数

Measuring the Overall Heat Transfer Coefficient of Wei-Jing Oil Pipeline by the Method of Soil Thermal Conductivity

为优化魏荆输油管道运行方案,实现管道节能运行,根据土壤导热系数的测定原理,应用土壤导热系数测定魏荆输油管道的总传热系数,介绍了探针法测量土壤导热系数的测量原理和方法,通过对现场管道测点定位和管道埋深测量,并对现场测量数据应用数值方法进行回归,得出了魏荆输油管道总传热系数的年平均值为1.8686W/(m2·℃)。现场测量表明,土壤导热系数法是测量埋地热油管道总传热系数的最有效方法。

For the sake of holding the overall heat transfer coefficient change of Wei-Jing Oil Pipeline,optimizing the run program of the pipeline,economizing on energy for the pipeline run, the method of the soil thermal conductivity is applied for measuring the overall heat transfer coefficient of the pipeline. The key of the measurement is the soil thermal conductivity of the pipeline buried depth and its measurement. The probe method is applied for measuring the soil thermal conductivity along the pipeline. The philosophy and method of measurement for measuring the soil thermal conductivity are expatiated. The probe for measuring the soil thermal conductivity is designed and executed, the orientation of the measuring point and the buried depth measurement are by the underground line scouting instrument. The data of the field test is done regression by the numerical method. By the field test,the all-year average overall heat transfer coefficientof the pipeline is 1. 868 6 W/(m2 ·℃). The field measurement indicates that the soil thermal conductivity is available approach for measuring the overall heat transfer coefficient of the buried pipeline.