并联LNG高压泵入口管路布置设计CFD数值模拟研究  

CFD numerical simulation study on the layout design of inlet pipeline for parallel LNG high-pressure pump

作　　者：欧阳文婷 Ouyang Wenting(CNOOC Green Energy Port Zhejiang Ningbo Energy Co.,Ltd.Ningbo 315800)

机构地区：[1]中海油绿能港浙江宁波能源有限公司,浙江宁波315800

出　　处：《石化技术》2025年第3期13-15,共3页Petrochemical Industry Technology

摘　　要：为合理进行液化天然气(LNG)接收站并联高压泵的管道布置设计,防止较大偏流及压力波动的现象,造成管道振动、介质冲击、噪声工况不稳定的问题,基于计算流体动力学(CFD)的数值模拟方法,建立管网的三维模型并划分网格,在典型工况条件下进行CFD三维仿真,分析判断偏流程度、流场分布。研究表明:LNG 接收站并联高压泵发生偏流与实际运行情况相符,距进口总管的最近的泵入口流量最大,但偏流差值在允许范围;合理进行π弯设计不会明显引起压力波动和流量分配不均,不是导致高压泵出现抽液困难的主要因素;可以运用CFD进行三维仿真分析模拟管路布置设计,给后续设计优化及问题分析提供理论依据。In order to design the pipeline layout of parallel high-pressure pumps in LNG receiving stations in a reasonable manner,prevent the phenomenon of largeflow deviation and pressurefluctuations,and solve the problems of pipeline vibration,medium impact,and unstable noise conditions,a three-dimensional model of the pipeline network is established based on the numerical simulation method of computationalfluid dynamics.The grid is divided and the CFD three-dimensional simulation is carried out under typical working conditions to analyze and judge the degree offlow deviation andflowfield distribution.Research has shown that the occurrence of bias current in parallel high-pressure pumps at LNG receiving stations is consistent with actual operating conditions.The pump closest to the inlet manifold has the highest inletflow rate,but the bias current difference is within the allowable range;Reasonableπbending design will not significantly cause pressurefluctuations and unevenflow distribution,and is not the main factor leading to difficulties in pumping high-pressure pumps;Conduct CFD three-dimensional simulation analysis to simulate pipeline layout design,providing theoretical basis for subsequent design optimization and problem analysis.

关 键 词：LNG接收站 并联高压泵 计算流体力学 数值模拟 管路布置设计 

分 类 号：TE974[石油与天然气工程—石油机械设备]