摘要
LNG(液化天然气,Liquefied Natural Gas)接收站具有投资大、设计压力高等特点,而LNG低温管道系统是其核心组成,但在工作时可能会产生严重的水击现象,影响LNG接收站的安全运行,因此需要通过水击计算综合考虑管道系统设计。文章以某LNG接收站为例,重点对操作最频繁、影响最严重的LNG卸料系统进行水击分析,计算得出管道系统承受最大的水击力和阀门关闭时间要求。由计算结果可知,阀门关闭是管道产生水击力的主要因素,当因关阀造成水击力过大时,需要相应调整联锁设计;低压外输、高压外输系统阀门关闭时产生的水击力均小于管道的设计压力,满足设计要求。
LNG(Liquefied Natural Gas)receiving station has the characteristics of high investment and high design pressure,among which the LNG low-temperature pipeline system is its core component.However,serious water hammer phenomena may occur during operation,affecting the safe operation of LNG receiving station.Therefore,it is necessary to consider the design of pipeline system comprehensively through the calculation of water hammer.This article takes a certain LNG receiving station as an example,focusing on water hammer analysis of the LNG unloading system with the most frequent operation and severe impact,then the maximum water hammer force and valve closing time requirements of the pipeline system are calculated.It can be found from the calculation results that the valve closing is the main factor to produce water hammer force.When the water hammer force is too large due to valve closure,the interlocking design should be adjusted accordingly;The water hammer force generated when the valves of the low-pressure and high-pressure export systems are closed is less than the design pressure of the pipeline,which meets the design requirements.
作者
黄宇
陈海平
刘梦溪
李强
Huang Yu;Chen Haiping;Liu Mengxi;Li Qiang(State Key Laboratory of Heavy Oil Processing,China University of Petroleum-Beijing,Beijing 102249,China;College of Chemical Engineering and Environment,China University of Petroleum-Beijing,Beijing 102249,China;China National Offshore Oil Corporation,Beijing 100010,China;CNOOC Gas&Power Group,Beijing 100028,China;Institute of New Energy,China University of Petroleum(East China),Qingdao,Shandong 266580,China)
出处
《化工设备与管道》
CAS
北大核心
2023年第6期65-71,共7页
Process Equipment & Piping
关键词
LNG
卸料系统
低温管道
水击
LNG
unloading system
low temperature pipeline
water hammer
