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新型N形密封圈的设计及结构优化 被引量:2

Design and Structure Optimization of New N-shaped Sealing Ring
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摘要 根据弹簧的弹性势能与动能相互转化原理以及弹簧的螺旋式结构,自主设计新型N形密封圈,通过ANSYS Workbench建立活塞杆、N形橡胶圈、沟槽的二维轴对称模型;利用正交试验法,以凹槽深度A(1,2,3,4 mm)、凹槽倒角B(0,0.1,0.3,0.5 mm)、凹槽间距C(0.6,0.8,1.0,1.2 mm)、预压缩量D(0.1,0.3,0.5,0.7 mm)为因素(水平),选择L 16(45)正交试验表,通过模拟,判断N形密封圈凹槽的最优几何参数,分析N形圈在静压密封状态下的密封性能,并与矩形圈和O形圈进行了对比研究。结果表明:压缩量0.7 mm(10%),凹槽深度3 mm,凹槽间距1.0mm,凹槽倒角0.3 mm为N形密封圈凹槽处最优几何参数;在介质压力低于7 MPa的情况下,新型N形密封圈比矩形圈和O形圈具有更小的Von-Mises应力和剪切应力,且在保证密封的前提下,接触压力较小,说明在静密封中,新型N形密封圈密封性能良好,使用寿命更长。研究结果对实际静密封工况下的使用具有理论指导意义。 According to the principle of mutual transformation between elastic potential energy and kinetic energy of the spring and the spiral structure of the spring,a new N-shaped seal ring is designed independently.The two-dimensional axisymmetric model of the piston rod,N-shaped rubber ring and groove is established through the ANSYS workbench;the orthogonal test method was used to determine the depth of the groove A(1 mm,2 mm,3 mm,4 mm),groove chamfer B(0mm,0.1 mm,0.3 mm,0.5 mm),groove spacing C(0.6 mm,0.8 mm,1.0 mm,1.2 mm),pre-compression rate D(0.1 mm,0.3 mm,0.5 mm,0.7 mm)as the factor(level),select the L16(45)orthogonal test table,Judge the optimal geometric parameters of the groove of the N-shaped sealing ring,analyze the sealing performance of the N-shaped ring in the static pressure sealing state,and compare it with the rectangular ring and the O-ring.The compression amount is 0.7 mm(10%),the groove depth is 3 mm,the groove spacing is 1.0 mm,and the groove chamfer is 0.3 mm;When the medium pressure is lower than 7 MPa,the new N-shaped seal ring has less Von Mises stress and shear stress than the rectangular ring and O-ring,and the contact pressure is low on the premise of ensuring the seal,which indicates that the new N-shaped seal ring has good sealing performance and longer service life in static seal.The research results have a theoretical significance for the use of actual static sealing conditions.
作者 王琳 WANG Lin(Fujian College of Water Conservancy and Electric Power,Yongan 366000,China)
出处 《液压气动与密封》 2023年第11期103-107,共5页 Hydraulics Pneumatics & Seals
基金 三明市引导性科技项目(2023-G-40)。
关键词 N形密封圈 结构优化 正交试验 设计 n-shaped sealing ring structural optimization orthogonal experiment design
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