航天推进技术研究院主办
[1]薛 杰,黄金平.工作压力下法兰结构螺栓及密封件受力特性[J].火箭推进,2021,47(05):65-70.
XUE Jie,HUANG Jinping.Force characteristics of frange structure bolts and seals under working pressure[J].Journal of Rocket Propulsion,2021,47(05):65-70.
点击复制
XUE Jie,HUANG Jinping.Force characteristics of frange structure bolts and seals under working pressure[J].Journal of Rocket Propulsion,2021,47(05):65-70.
工作压力下法兰结构螺栓及密封件受力特性
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
47
期数:
2021年05期
页码:
65-70
栏目:
研究与设计
出版日期:
2021-10-28
- Title:
- Force characteristics of frange structure bolts and seals under working pressure
- 文章编号:
- 1672-9374(2021)05-0065-06
- 关键词:
- 连接法兰 螺栓力 密封件 刚度
- 分类号:
- V214
- 文献标志码:
- A
- 摘要:
- 为了研究工作压力下典型法兰结构螺栓力和密封件接触力的变化关系,首先对密封件、法兰及连接螺栓进行预紧状态及工作状态的受力分析,并在轴向及转动方向对法兰建立力与力矩的平衡方程,通过对平衡方程组的理论推导得到螺栓力增量随工作压力增量的变化关系。其次,建立法兰密封有限元模型,并进行工作压力作用下的仿真计算,结果表示法兰的力学分析准确合理,有效验证了理论公式的推导及其正确性。最后,在推导出的理论公式基础上,准确获得了工作过程中螺栓力、密封件接触力与密封件内半径R、螺栓与密封件距离L、密封件压缩/拉伸刚度K之间的关系,为法兰密封的设计及结构优化提供参考。
- Abstract:
- In order to study the variation mechanism of bolt force and seal contact force in typical flange structure under working pressure,firstly,the force analysis of the seal,flange and connecting bolts in pre-tightening state and working state is carried out. The equilibrium equations of force and torque are established for the flange in axial and rotational directions,and the relationship between the bolt force increment and the working pressure increment is obtained through the theoretical derivation of equilibrium equations. Secondly,the finite element model of flange seal is established and the simulation calculation under the working pressure is carried out. The results show that the mechanical analysis of the flange is accurate and reasonable,which effectively verifies the derivation and correctness of the theoretical formula. Finally,on the basis of the derived theoretical formula,the relationship between bolt force,seal contact force and seal inner radius R,distance L between bolt and seal, seal compression/tensile stiffness K during the working process is accurately obtained,which provides a reference for the structural design and optimization of flange seal.
参考文献/References:
[1] 喻健良,罗从仁,张忠华,等.法兰密封系统螺栓加载方式试验研究[J].压力容器,2012,29(11):7-12. [2] 冉振,傅波,李世伟,等.高压自紧密封式法兰的密封性能分析[J].润滑与密封,2018,43(12):33-37. [3] 程帅,张德志,刘文祥,等.强脉冲载荷作用下端盖法兰结构的螺栓预紧力设计方法[J].爆炸与冲击,2019,39(2):88-94. [4] 刘雁.金属与金属接触型法兰接头预紧方法及密封性能研究[D].上海:华东理工大学,2014. [5] 廖建敏,周思柱,李宁.常规法兰结构密封性能对比研究[J].机械,2015,42(10):22-26. [6] 侯莲香.影响法兰密封性能因素的分析[J].化学工业与工程技术,2007,28(S1):143-145. [7] 梁宇翔.螺栓法兰接头垫片安全密封性能分析[D].兰州:兰州理工大学,2017. [8] 刘明.螺栓法兰密封结构优化预紧施工方案研究[D].大连:大连理工大学,2011. [9] 陈峰,周良.液氨过滤器封头法兰密封失效成因分析及解决方案[J].化肥工业,2016,43(4):46-49. [10] 赵尔班,王明涛,冯满仓.蒸汽法兰密封失效原因分析及解决方案[J].吉林化工学院学报,2011,28(7):18-20. [11] 胡建洲.高温高压设备梯形槽法兰密封失效分析与研究[D].西安:西北大学,2012. [12] 李妙婷,杨绍康.先进发动机低泄漏、长寿命密封[J].火箭推进,1996,22(3):24-31.LI M T,YANG S K.Advanced engine low leakage,long life seal [J].Journal of Rocket Propulsion,1996,22(3):24-31. [13] 陈威,何华,李科,等.不同螺栓力计算方法的适用工况研究[J].润滑与密封,2019,44(11):130-134. [14] 刘健.管法兰系统稳态与瞬态密封性数值模拟分析[D].吉林:吉林化工学院,2020. [15] 张燕燕.螺栓法兰连接系统应力强度的研究[J].精密制造与自动化,2016(1):8-11. [16] 张庆雅,汪亮.垫片螺栓法兰连接系统的载荷与变形分析[J].机械科学与技术,2004,23(1):33-36. [17] 休泽尔.液体火箭发动机现代工程设计[M].朱宁昌,葛李虎,张民庆,等译.北京:中国宇航出版社,2004. [18] 甘望星,匡良明.ASME法兰刚度与转角关系验证及转角极限确定[J].石油化工设备,2018,47(4):49-53. [19] 丁伯民.美国压力容器规范分析[M].上海:华东理工大学出版社,1995. [20] 郭可谦,杨育中,佘公藩,等.紧固件连接设计手册[M].北京:国防工业出版社,1990.
备注/Memo
基金项目:科工局稳定支持项目(HTKJ2020KL011007)
作者简介:薛杰(1983—),男,硕士,高级工程师,研究领域为流固耦合、结构振动、冲击与强度。
更新日期/Last Update:
1900-01-01