某成品油管道管输超耗原因分析及控制措施

Cause Analysis and Control Measures of Excess Loss of an Oil Product Pipeline

对某成品油管道管输超耗原因进行了分析,一是阀门内漏导致站间管道空管;二是上载油库油罐间油品互窜导致上载数据不准确;三是上载和下载油库自动计量系统与人工检尺对比偏差较大;四是受质量流量计安装位置或方式不合理、管道液体微量流动造成停输时流量计走数、流量计零点漂移以及介质温度压力或其他环境因素导致流量计产生误差。为此提出相应控制措施:一是上载站尽快加装质量流量计并加强维护管理;二是做好输油过程的压力监控及设备工况分析;三是及时进行管输盘存和损耗分析,确保管输油品数量准确。

The causes of excess loss of an oil product pipeline are analyzed.Firstly,the internal leakage of the valve leads to the empty pipe of the pipeline between stations.Secondly,the uploaded data is inaccurate due to the mutual channeling of oil products between oil tanks in the uploaded oil depot.Thirdly,there is a large deviation between the automatic metering system and the manual ruler during the uploading and downloading of the oil depot.Fourthly,the error of the flowmeter is caused by the unreasonable installation position or mode,the readings variation of the flowmeter during shutdown caused by the micro flow of pipeline liquid,the zero drift of the flowmeter,medium temperature and pressure or other environmental factors.Therefore,corresponding control measures are put forward.