摘要
针对HJ成品油管道CK-ZH段停输后出现管道压力变化的情况,在理论分析油温变化及地形对停输管道压力影响的基础上,依据成品油管道历史数据及变化趋势,建立了适用于该段成品油管道停输阶段压降计算模型,并将计算结果与实际数据进行对比验证,确定了压降随油温的变化关系。对于管道存在高点,在保压停输期间对打孔盗油和泄漏的监测有影响的问题,可通过检测实际的压力油温曲线与正常状态下的曲线进行对比来确定。
Aiming at the phenomenon of pipeline pressure drop after shutdown of an oil product pipeline,the influence of oil temperature change and terrain on the pressure of shutdown pipeline is analyzed.Based on the historical data of two sections of the pipeline,a calculation model for pressure drop of the shutdown pipeline is established,and the pipeline pressure drop due to perforation by oil thief or leakage is simulated.The conclusions are as follows:(1)After shutdown,the pressure of the horizontal airtight pipeline is kept at a relatively high level,generally 1.5 MPa.At present,the pressure of DX-DF pipeline section is not lower than the saturated vapor pressure under the condition of pipeline operation.Therefore,the empirical formula obtained by using a single oil phase to study the relationship between pressure and temperature is in good agreement with the actual data.(2)Because the pressure of CK-SH section is affected by the high point,gas-phase oil often appears in the pipeline section after shutdown.In the future,the outbound pressure of CK station should be no less than 0.74 MPa,and there will be no gas-phase oil at the outbound high point of CK station.(3)The existence of high points greatly affects the normal detection of leakage and perforation by oil thief during the shutdown period.Therefore,this paper fits the relationship between pressure and temperature during normal shutdown in CK-SH section,and gives a monitoring method for leakage and perforation by oil thief.
作者
温华平
龙震
Wen Huaping;Long Zhen
出处
《石油库与加油站》
2020年第5期1-6,M0002,共7页
Oil Depot And Gas Station
关键词
成品油管道
保压停输
压降
泄漏
oil product
pipeline
pressure-holding shutdown
pressure drop
analysis.
