大型LNG储罐罐底保冷力学强度校核设计浅析  

作　　者：陈晖[1] 扬帆[1] 

机构地区：[1]中海石油气电集团有限责任公司,北京100027

出　　处：《中国科技博览》2013年第30期614-614,535,共2页China Science and Technology Review

摘　　要：罐底保冷设计及力学强度校核是大型液化天然气（LNG）储罐设计的核心技术之一。大型LNG储罐底部保冷层应能承受上部LNG产品及储罐本体重量，所以保温层应具有足够的抗压强度；同时罐底部保冷层可能受到横向作用力，因此设计需对罐底保冷层进行承载能力校核以确保投产后罐底泡沫玻璃砖不被压碎破坏。本文以国内某已建LNG项目储罐罐底保冷系统基本参数为例，对其在运行工况重量荷载、水压试验、地震等工况作用下进行了力学抗压强度校核设计，结果表明罐底保冷层具有较大安全系数，力学富裕量满足规范要求。The design and mechanical strength check of tank bottom insulation is one of the key core technologies.The tank bottom insulation layer should be able to withstand the upper LNG tank body weight.Therefore,the insulation layer should have a sufficient compressive strength. At the same time the insulation layer may be subject to a laterai force,so it is needed to check the carrying capacity and compressive strength, and ensure the bottom of the tank foam glass tiles are not crushed destruction when put into operation. In this paper,using the tank bottom insulation basic parameters of one built tank in domestic LNG projects,checked the mechanical strength of the tank bottom insulation in weight loads of operating conditions, hydrostatic testing,earthquakes and other conditions.The results show that the tank bottom insulation layer has larger safety factor, have enough mechanical wealthy amount to meet the regulatory requirements.

关 键 词：LNG储罐 罐底 保冷层 力学强度 校核设计 

分 类 号：TE972[石油与天然气工程—石油机械设备]