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

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

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Analysis of Bolt Pretension of LNG Ultra-Low Temperature Ball Valve
	Li, Shuxun 1; Yin, Huiquan 1; Zhao, Minjie 2; Yang, Lingxia 1; Liu, Taiyu 1
刊名	Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science)
	2021-07-01
卷号	49 期号:7 页码:142-148
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
ISSN号	1000565X
DOI	10.12141/j.issn.1000-565X.200247
英文摘要	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.
语种	中文
出版者	South China University of Technology
内容类型	期刊论文
源URL	[http://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
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.