空间环模设备O型橡胶密封圈设计计算

doi:10.13385/j.cnki.vacuum.2023.02.10

摘要/Abstract

摘要： 本文提出一种真空用O型橡胶密封圈设计计算方法。通过推导O型橡胶密封圈弹性变形压力的近似计算公式,结合已实际工程应用的O型密封圈设计参数,计算出O型橡胶密封圈受压弹性力及其在真空环境下承受的大气压力,并以多项式拟合的方法得到两者的对应关系。以待求解的O型橡胶密封圈承载的大气压力为输入条件,利用密封圈弹性变形弹性力近似公式反向求解得到O型橡胶密封圈的几何参数。为验证该计算方法的可靠性,采用Mooeny-Rivlin模型对算例结果进行仿真分析,结果表明通径7500mm的法兰O型橡胶密封圈在大气压力作用下最大应力为7.01MPa左右,不会发生永久损坏,证明O型橡胶密封圈设计计算方法可行。

关键词: 真空密封, O型橡胶密封圈, 仿真, 数值分析

Abstract: This paper presents a design and calculation method of O-type rubber sealing ring for vacuum. The approximation equation for calculating the elastic deformation pressure of O rubber sealing is derived, combined with the design parameters of O sealing ring that have been successfully used in engineering practice, O rubber seal compression elastic force and atmospheric pressure in vacuum environment are calculated, and the corresponding relationship between them is obtained by polynomial fitting method. The atmospheric pressure of O-type rubber seal ring to be solved is the input condition,and the geometric parameters of O-type rubber seal ring are inversely solved by using the approximate formula of elastic deformation pressure of the seal ring. In order to verify the reliability of the calculation method, Mooeny-Rivlin model was used to simulate the calculation results. The results show that the maximum stress of the flange O-type rubber sealing ring with diameter of 7500mm is about 7.01MPa under atmospheric pressure, and no permanent damage will occur, which proves that the design and calculation method of O-type rubber sealing ring is feasible.

Key words: vacuum seal, O-type rubber sealing, simulation, numerical analysis

中图分类号:

TB42

冯智猛, 刘海静, 王飞, 李灿伦, 乔宏, 景加荣. 空间环模设备O型橡胶密封圈设计计算[J]. 真空, 2023, 60(2): 57-62.

FENG Zhi-meng, LIU Hai-jing, WANG Fei, LI Can-lun, QIAO Hong, JING Jia-rong. Design and Calculation of O-type Rubber Sealing for Space Environment Simulation Equipment[J]. VACUUM, 2023, 60(2): 57-62.

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