计算埋地管道经济保温厚度的一个新模型

A New Model Calculating Economic Insulation Thickness of Buried Oil Transportation Pipelines

以保温工程投资、动力消耗和热力消耗等三项费用的终值费用之和为目标函数,建立了计算埋地热油输送管道经济保温厚度的一个新的数学模型。该模型比较全面地考虑了油品性质、管道埋深、进站温度和资金的时间价值等影响因素。实例计算表明,管道埋地深度对经济保温厚度有着明显的影响,在进行保温设计时,必须考虑管道埋深的影响。对于小口径、长距离、大输量的管道,应该考虑动力损耗对经济保温厚度的影响。

Using the sum of the end value expense which contains thermal insulation project investment, electric power and heat power consumption as object functions,a new mathematic model for calculating economy insulation thickness of buried heated oil transportation pipelines is set up. In the model, oil properties, pipeline laying depth,oil inlet temperature and the time value of expense are considered. Calculation case shows that pipeline laying depth obviously influences the economic insulation thickness and the influence must be considered in insulation design of buried oil pipeline. For the pipeline of small-diameter, longdistance or great flow-rate, the effect of electric power consumption on economic insulation thickness should be considered in the pipeline design.