水力马力能耗指标在管道能耗分析中的应用

在剖析国外管道公司采用的输油管道单位水力马力能耗费用指标的基础上,引入了两个新的油气长输管道能耗评价指标,即单位有用功耗能和单位周转量消耗有用功,并给出了相应的计算方法。采用新指标能够方便地分析生产单耗变化的原因,为进一步节能挖潜指明方向。将新指标与国内原有的管道能耗指标及一些辅助指标相结合,可以较全面地评价油气长输管道的能耗状况。应用该指标对涩宁兰输气管道进行能耗分析,验证了该新指标的合理性和适用性。结果表明:生产单耗较高的原因主要是管存较低,单位周转量消耗有用功较高;单位有用功耗能较低的原因是管存低,节流损失的能量较小,使得能源利用率指标较高。

Application of energy consumption indicators based on hydraulic horsepower in the analysis of energy consumption of oil and gas pipeline

On the basis of analyzing unit hydraulic horsepower energy consumption cost indicator of oil pipeline used by foreign pipeline companies,two new energy consumption evaluation indicators for long-distance oil/gas pipeline,namely the energy consumption for unit useful work and the consumption for useful work of unit turnover,are introduced with corresponding calculation method.The new indicators can be adopted to analyze the changing reasons of unit energy consumption during the operation of pipeline,for purpose to further save energy.The new indicators in combination with domestic original pipeline energy consumption indicators and ancillary indicators can give a more comprehensive evaluation on energy consumption in long-distance oil/gas pipeline.The indicators have been applied in the energy consumption analysis of Sebei-Xining-Lanzhou Gas Pipeline so as to verify their rationality and applicability.Results indicate that the reason for the higher unit consumption during pipeline operation is the lower pipeline inventory and the higher useful work consumption in unit turnover,and the reason for the lower unit useful work energy consumption is related to the lower pipeline inventory and smaller throttling loss,which lift up the utilization rate of energy.