搭接焊铝塑管与对接焊铝塑管的长期静液压强度计算

doi:10.19491/j.issn.1001-9278.2011.01.016

中国塑料 ›› 2011, Vol. 25 ›› Issue (01): 71-75 .DOI: 10.19491/j.issn.1001-9278.2011.01.016

搭接焊铝塑管与对接焊铝塑管的长期静液压强度计算

李明轩

收稿日期:2010-09-13 修回日期:1900-01-01 出版日期:2011-01-26 发布日期:2011-01-26

Calculation of Long-term Hydrostatic Pressure Strength of Overlap-welding and Butt-welding Aluminum-plastic Pipes

LI Mingxuan

Received:2010-09-13 Revised:1900-01-01 Online:2011-01-26 Published:2011-01-26

摘要/Abstract

摘要： 将16-32规格的搭接焊铝塑管的长期静液压试验曲线外推至50年，通过考虑1个与对接焊铝塑管相同的总体设计系数（C=1.25），证明在T0=95 ℃的长期工作温度下，16-32规格的搭接焊铝塑管与对接焊铝塑管的允许工作压力P0相当。搭接焊铝塑管也能满足95 ℃、1.25 MPa下使用寿命为50年的要求。根据国家标准对搭接焊铝塑管与对接焊铝塑管的铝管层最小壁厚和最小拉伸强度的要求，计算出16-50规格的搭接焊铝塑管与对接焊铝塑管的P0。结果表明，小规格二者的P0相当，大规格对接焊铝塑管的P0优势明显。

关键词: 铝塑管, 搭接焊, 对接焊, 长期静液压强度

Abstract: The long-term hydrostatic pressure test curves of overlap-welding aluminum-plastic pipes with diameters of 16mm to 32mm were extrapolated to 50 years by considering the same overall design factor as 1.25 with butt-welding aluminum-plastic pipes. It showed that at 95 ℃ long-term operating temperature, 16-32 type overlap-welding aluminum-plastic pipes had a comparative allowable working pressure P0 compared with butt-welding aluminum-plastic pipes, and could meet the requirements of the 50-year service life under 95 ℃ and 1.25 MPa. According to the requirements of minimum thickness and minimum tensile strength of aluminum layer in national standards, P0 of the overlap-welding aluminum-plastic pipes and butt-welding aluminum-plastic pipes with diameters of 16mm to 50mm was calculated. The results showed that both had the same P0 for the small size, but butt-welding aluminum-plastic pipes had the obvious advantage for the large size.

Key words: aluminum-plastic pipe, overlap-welding, butt-welding, long-term hydrostatic pressure strength

李明轩. 搭接焊铝塑管与对接焊铝塑管的长期静液压强度计算[J]. 中国塑料, 2011, 25(01): 71-75 .

LI Mingxuan. Calculation of Long-term Hydrostatic Pressure Strength of Overlap-welding and Butt-welding Aluminum-plastic Pipes[J]. China Plastics, 2011, 25(01): 71-75 .

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搭接焊铝塑管与对接焊铝塑管的长期静液压强度计算

Calculation of Long-term Hydrostatic Pressure Strength of Overlap-welding and Butt-welding Aluminum-plastic Pipes

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