Analysis of Bolt Pretension of LNG Ultra-Low Temperature Ball Valve

doi:10.12141/j.issn.1000-565X.200247

IR > 石油化工学院

	Analysis of Bolt Pretension of LNG Ultra-Low Temperature Ball Valve
	Li, Shuxun1 ; Yin, Huiquan 1; Zhao, Minjie 2; Yang, Lingxia 1; Liu, Taiyu 1
	2021-07-01
发表期刊	Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science)
ISSN	1000565X
卷号	49 期号:7 页码:142-148
摘要	In order to study the effect of temperature on the bolt pretension of flange structure, the bolt pretension and sealing conditions of flange in liquified natural gas(LNG) ultra-low temperature ball valve at different temperatures were analyzed by ANSYS finite element software, and the pretension states of bolt materials with different linear expansion coefficients at room temperature and low temperature were compared. The results show that when the bolt material is B8M and XM-19, the preload force increases with the decrease of temperature, and the pretension under the low temperature conditions increases by 24.93% and 6.28% respectively compared with normal temperature; when the bolt material is Inconel625, the pretension decreases with the decrease of temperature, and the pretension under the low temperature condition decreases by 26.39% compared with normal temperature. At the same time, the variation of the sealing specific pressure of the metal spiral wound gasket with temperature exhibits the same trend with the bolt pretension. © 2021, Editorial Department, Journal of South China University of Technology. All right reserved.
关键词	Bolts Flanges Liquefied natural gas Ansys finite elements Effect of temperature Linear expansion coefficient Liquified natural gas Low temperature conditions Sealing conditions Spiral wound gaskets Ultra low temperatures
DOI	10.12141/j.issn.1000-565X.200247
收录类别	EI
语种	中文
出版者	South China University of Technology
EI入藏号	20213110716936
EI主题词	Temperature
EI分类号	523 Liquid Fuels ; 605 Small Tools and Hardware ; 619.1.1 Pipe Accessories ; 641.1 Thermodynamics
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/150915
专题	石油化工学院
作者单位	1.School of Petrochemical Engineering//Machinery Industry Pump and Special Valve Engineering Research Center, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Shanghai High and Medium Pressure Valve Co., Ltd., Shanghai; 201401, China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Li, Shuxun,Yin, Huiquan,Zhao, Minjie,et al. Analysis of Bolt Pretension of LNG Ultra-Low Temperature Ball Valve[J]. Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science),2021,49(7):142-148.
APA	Li, Shuxun,Yin, Huiquan,Zhao, Minjie,Yang, Lingxia,&Liu, Taiyu.(2021).Analysis of Bolt Pretension of LNG Ultra-Low Temperature Ball Valve.Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science),49(7),142-148.
MLA	Li, Shuxun,et al."Analysis of Bolt Pretension of LNG Ultra-Low Temperature Ball Valve".Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science) 49.7(2021):142-148.