关于法兰平面静密封O形圈的计算(最新整理)

1、关于法兰平面静密封 o 形圈的计算o 形圈设计误区：1. 压缩率越大越好一般认为，o 形圈压缩率越大，起到的密封效果就越好。但事实并非如此，压缩率过小固然会影响密封效果，但压缩率过大也会导致密封圈失效而失去密封作用。2. 密封槽越窄越好o 形圈密封槽的宽度有相应标准可查（gb/t 3452.3-2005）。过窄会导致 o 形圈侧向压力分布不均，反而增大泄露的可能性。选择 o 型圈的计算：1. 首先确定压缩率： 压缩率0: o 形圈截面直径h：密封槽高度 = (0 )/0参考相关文档综合意见 =15%25%参考 gb/t 3452.3-2005 轴向密封沟槽尺寸计算出 =18%28%当0=3.5

2、5 时计算 =22.5%2. 计算相适应的密封槽宽度 1 = ( 0.6 )h = (1 ) 0 = (4 2 + 0.34 + 0.31)001 0槽宽 b 应比0略大，同时考虑到矩形密封圈有金属支架，取： = 0 + 0.7h: 密封槽深度；0：压缩后 o 形圈宽度； b：压缩后顶部接触面积；b：密封槽宽度。下表是根据如上公式， 取不同数值时的计算结果d0hbb03.550.22.841.90994.01153.550.2252.751252.090954.1013953.550.252.66252.289754.2008333.550.272.59152.461574.2879143.5

3、50.32.4852.74064.432429仍取 =22.5%则槽宽 b=4.8mm“”“”at the end, xiao bian gives you a passage. minand once said, people who learn to learn are very happy people. in every wonderful life, learning is an eternal theme. as a professional clerical and teaching position, i understand the importance of continu

4、ous learning, life is diligent, nothing can be gained, only continuous learning can achieve better self. only by constantly learning and mastering the latest relevant knowledge, can employees from all walks of life keep up with the pace of enterprise development and innovate to meet the needs of the market. this document is also edited by my studio professionals, there may be erro