海底输油管道压力-温度调节特性研究

Study on Pressure-temperature Regulation Characteristics of Submarine Oil Pipeline

海底管道出口温度是控制原油安全输送的关键指标之一,然而压力调节会对温度的稳定性产生重要影响。利用OLGA软件构建了海底输油管道计算模型,模拟研究了正弦、方波、矩形脉冲和随机正态分布四种典型数学模型描述的压力条件下,管道输送过程中的压力-温度变化规律。结果表明,采用正弦和矩形脉冲调节方式时,海底管道的压力和温度调节特性的相似度较高,波形一致,周期相同,振幅和相对平衡位置均完全对应;采用方波调节方式时,海底管道压力和温度的波形不一致,但周期相同,振幅和相对平衡位置也是完全对应的;采用随机正态分布调节方式时,海底管道的压力和温度均服从正态分布,且两者标准差的变化趋势相同。

The outlet temperature of submarine pipeline is one of the key indicators to control the safe transportation of crude oil.However,pressure regulation will have an important impact on the stability of temperature.The calculation model of submarine oil pipeline is built by using OLGA software,and the pressure-temperature variation law during pipeline transportation is simulated and studied under the pressure conditions described by four typical mathematical models:sine wave,square wave,rectangular pulse and random normal distribution.The results show that when the sine and rectangular pulse regulation modes are adopted,the pressure and temperature regulation characteristics of the submarine pipeline have high similarity,consistent waveforms,the same period,and the amplitude and the relative equilibrium position are completely corresponding;When the square wave regulation mode is adopted,the pressure and temperature waveforms of the submarine pipeline are different,but the period is the same,and the amplitude and relative equilibrium position are also completely corresponding;When the regulation mode of random normal distribution is adopted,the pressure and temperature of the submarine pipeline obey the normal distribution,and the variation trend of the standard deviation of the two is the same.