大落差输油管道局部高点水击压力预测方程研究  

Study on prediction equation of water hammer pressure at local high point of oil pipeline with large drop

作　　者：孙璐璐 李长俊[1] 贾文龙[1] 张财功 余秋爽 罗金华 SUN Lulu;LI Changjun;JIA Wenlong;ZHANG Caigong;YU Qiushuang;LUO Jinhua(Petroleum Engineering School,Southwest Petroleum University,Chengdu Sichuan 610500,China)

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500

出　　处：《中国安全生产科学技术》2022年第6期172-177,共6页Journal of Safety Science and Technology

基　　金：国家自然科学基金项目(51974269)。

摘　　要：为预测大落差管道局部高点水击压力,避免在关阀、停泵等应急操作过程中因高点低压而使油品气化,采用OLGA软件水击计算模块分析介质流速、高点稳态压力、关阀时间、阀门位置对高点水击压力的影响机制,并结合国内某原油管道现场SCADA系统数据进行验证;采用通用全局优化算法(UGO)和列文伯格-马夸尔特法(LM)建立局部高点压力预测方程,相对误差在5%以内。研究结果表明:本文方程可实现大落差输油管道水击过程中局部高点水击压力的预测。研究结果可为大落差输油管道安全运行与管理提供参考。In order to predict the water hammer pressure at local high points of pipeline with large drop and avoid the oil gasification due to low pressure at high points during the valve closing,pump stopping and other emergency operation processes,the water hammer calculation module of OLGA software was used to analyze the influence mechanism of medium flow velocity,high point steady-state pressure,valve closing time and valve position on the high point water hammer pressure,and the results were verified by comparing with the field SCADA system data of a domestic crude oil pipeline.The prediction equation of high point water hammer pressure was established by using the Universal Global Optimization(UCO)and the Levenberg Marquardt(LM)and the relative error was less than 5%.The results showed that the established equation can predict the water hammer pressure at high points during the water hammer process of oil pipelines with large drop.The research results can provide reference for the safe operation and management of pipe with large drop.

关 键 词：输油管道 大落差 水击压力 局部高点 压力预测 

分 类 号：X937[环境科学与工程—安全科学]