| 等径三通+长径弯头组合管件的安全性能分析 |
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| 引用本文： | 张素娟,金志江,李浩,王晓芳,陈坡.等径三通+长径弯头组合管件的安全性能分析[J].化工机械,2008,35(6). |
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| 作者姓名： | 张素娟 金志江 李浩 王晓芳 陈坡 |
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| 作者单位： | 浙江大学,浙江省杭州市210027 |
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| 摘 要： | 采用有限元法分析了典型的组合管件——等径三通+长径弯头组合管件在内压作用下的力学特性和安全性能,并对其安全性做出了评价。结果表明,压力管道组合管件既安全又方便;不同转角半径对等径三通+长径弯头组合管件的塑性极限载荷有不同影响,其最佳三通转角半径与管外径之比为0.17～0.21;现有管件的塑性极限载荷估算公式不适用于组合管件,是偏危险的。
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| 关 键 词： | 组合管件 三通 弯头 极限载荷 安全性 |
An Analysis on the Safety Performance of the Combined Fittings of Straight Tees and Long Radius Elbows |
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| ZHANG Sujuan,JIN Zhijiang,LI Hao,WANG Xiaofang,CHEN Po.An Analysis on the Safety Performance of the Combined Fittings of Straight Tees and Long Radius Elbows[J].Chemical Engineering & Machinery,2008,35(6). |
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| Authors: | ZHANG Sujuan JIN Zhijiang LI Hao WANG Xiaofang CHEN Po |
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| Abstract: | The mechanical characteristics and safety performance were analyzed of the typical combined fittings——combined fittings of straight tees and long radius elbows under the action of internal pressure using finite element method,and their safety performance was evaluated.The result shows that the combined fittings for pressure pipes were both safe and convenient.The different corner radii have different influences on the plastic limit load of the combined fittings of straight tees and long radius elbows,the ratio of the optimum corner radius of straight tees to the external diameter of pipe r/D=0.17~0.21.The existing estimated formulae of the plastic limit load of fittings are not suitable for combined fittings,and are some dangerous. |
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| Keywords: | Combined Fitting Tee Elbow Limit Load Safety |
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