高温管道法兰螺栓剩余预紧力研究  

Research on the Residual Preloading Force of High Temperature Pipeline Flange Bolts

作　　者：张琪 张延华 黄波[3] 陈兵 芦娅妮 任金平 于春柳 Zhang Qi;Zhang Yanhua;Huang Bo;Chen Bing;Lu Yani;Ren Jinping;Yu Chunliu(School of Petrochemical Engineering,Longdong University,Qingyang,Gansu 745000,China;School of Mechanical and Electrical Engineering,Wuhan Institute of Technology,WuHan,Hubei 430205,China;CNPC Qingyang Petrochemical Branch,Qingyang,Gansu 745000,China;Ningxia Tianlifeng Energy Utilization Co.,Ltd.,Wuzhong,Ningxia 751000,China)

机构地区：[1]陇东学院石油化工学院,甘肃庆阳745000 [2]武汉工程大学机电工程学院,湖北武汉430205 [3]中国石油天然气股份有限公司庆阳石化分公司,甘肃庆阳745000 [4]宁夏天利丰能源利用有限公司,宁夏吴忠751000

出　　处：《化工设备与管道》2023年第3期86-90,共5页Process Equipment & Piping

基　　金：庆阳市科技计划项目(QY-STK-2022A-008和QY2021A-F011);甘肃省青年科技基金计划项目(20JR5RA482和22JR5RM214);甘肃省高等学校创新能力提升项目(2021A-125和2022A-131);宁夏回族自治区重点研发计划项目(2021BDE92029和2022BFH02002)。

摘　　要：为了得到更加符合工程实际和合理可行的高温管道法兰螺栓热紧方法,设计搭建了由一对突面对焊钢制管法兰组成的试验装置,对高温管道法兰螺栓一次预紧和二次热紧后剩余预紧力进行测量,结果表明:可以通过增大施加预紧应力的办法,保证高温管道法兰螺栓连接结构的可靠性和密封性效果,并且二次热紧时施加的预紧应力可以比一次预紧适当小一些。In order to obtain a thermal tightening method of high temperature pipe flange bolts that is more in line with engineering practice and reasonable and feasible,a test device consisting of a pair of welded steel pipe flanges with protrusible faces was designed and built to measure the residual pretightening force of the high temperature pipe flange bolts after primary pretightening and secondary thermal tightening. The results show that: The reliability and sealing effect of the bolted connection structure of the high temperature pipe flange can be ensured by increasing the applied preload stress, and the preload stress applied in the secondary heat tightening can be smaller than that in the primary preload.

关 键 词：高温管道法兰 螺栓 热紧 预紧力 

分 类 号：TB658[一般工业技术—制冷工程]