在役埋地热油管道低输量运行的经济研究

Economic Study on the Service Buried Hot Crude Pipeline Running of Low Flux

对在役埋地热油管道,当管道实际输量小于设计输量时,为妥善地解决管路沿线的能量消耗与能量供应之间的矛盾,研究一种经济上、技术上比较合理科学的运行方案,对于降低输油成本具有重要意义。建立了埋地热油管道经济计算数学模型,提出了采用方案比较法和TLNET软件相结合求解数学模型,确定了管道输量在小于设计输量下,使管道的运行费用为最小的经济运行方案,包括管道沿线运行的热泵站数、站内泵机组的组合方式、各站的进出站压力和温度、管道的小时运行费用、变频调速电机的转速及热站的热负荷等。进行了实例计算,通过与现场实际相比较,其结果令人满意。

Cutting down the cost of the service buried hot crude pipeline of low flux during oil transportation is very important. In order to properly solve the confliction between energy consumption and supply of the pipeline,when the actual flux is less than that of the design flux,study a sort of reasonable and scientific running scheme economically and technically is necessary. This article establishes a economic mathematical model on the buried hot crude pipeline and puts forward a solution of the mathematical model combined with a scheme comparison method and TLNET software, which makes the economical running scheme of the pipeline running expense minimal including the number of running pumping stations and heating stations,the combining mode of pump unit at the pumping station,inlet and outlet pressure,inlet and outlet temperature of every station,hourly running expense of pipeline,the rotation speed of frequency conversion timing motor and the heat load of each heating station. Through actual calculation on a buried crude pipeline and comparison with the field data,the result is satisfactory.