中国塑料 ›› 2008, Vol. 22 ›› Issue (02): 62-66 .DOI: 10.19491/j.issn.1001-9278.2008.02.013

• 加工与应用 • 上一篇    下一篇

钢丝缠绕增强塑料复合管外压失稳试验研究

郑津洋,李翔,朱彦聪,高永建,李稚娴,邵泰清,邵汉增   

  1. 1浙江大学化工机械研究所,浙江杭州310027; 2中国煌盛管业集团公司,浙江温州3250ll
  • 收稿日期:2007-11-09 修回日期:1900-01-01 出版日期:2008-02-26 发布日期:2008-02-26

Experimental Research on Buckling of Plastic Pipes Reinforced by Winding Steel Wires under External Pressure

ZHENG Jin-yang,LI Xiang,ZHU Yan-cong,GAO Yong-jian,LI Ya-xian,SHAO Tai-qing,SHAO Han-zeng   

  1. 1. Institute of Chemical Machinery and Process Equipment, Zhejiang Uninversity, Hangzhou 310027, China; 2. Wenzhou Huangsheng Pipe Industrial Group Co.,Ltd.,Wenzhou 325011, China
  • Received:2007-11-09 Revised:1900-01-01 Online:2008-02-26 Published:2008-02-26
  • Contact: ZHENG Jin-yang

摘要: 为获取钢丝缠绕增强塑料复合管(PSP)的失稳特性,同时为相关国家标准的制订提供基础数据和参考,进行了一系列试验研究。通过设计专用的外液压试验装置和真空试验装置,分别进行了瞬时失稳和蠕变失稳试验,获取PSP的瞬时临界失稳压力,验证提高其瞬时临界失稳压力的方法,得到PSP在不同压力载荷作用下不圆度一时间、载荷一临界失稳时间关系曲线。结果表明,与同直径、同壁厚的高密度聚乙烯管相比,公称直径为250 mm、钢丝直径为1.2 mm、钢丝根数为200根的PSP临界失稳压力提高了33.3;公称压力为1.6 MPa的PSP,当管径由160mm增至226mm时,其瞬时临界失稳压力由0. 62 MPa迅速降至0. 34 MPa,而当管径继续增至402.3 mm时,其瞬时临界失稳压力变化缓慢,仅由0.34 MPa降至0.25 MPa;PSP失稳呈现出时间相关特性,在低于瞬时临界失稳压力的外压载荷作用下,经过一段时间可能发生失稳,其耐压时间随载荷的增大而缩短。

关键词: 钢丝缠绕增强, 复合管, 稳定性, 试验研究, 外压

Abstract: the stability of steel wire cross-wound high density polythene ( PE-HD)pipes ( PSP ) was investigated. Instantaneous and long-term critical buckling pressures-time, deformation-time curves were obtained. For PE-HD pipes with a nominal diameter of 250 mm and a wall thickness of 16.5 mm wound with steel wire of diameter 1 .0 mm and volume fraction of 2. 9 wt,the instantaneous critical buckling pressure increased by 33.3%compared with neat PE-HD pipe with the same wall thickness. the instantaneous critical buckling pressures of the PSP decreased with increasing pipe diameters. Because of the time dependence behavior of the matrix, the critical buckling pressure of the PSP also showed the time dependent behavior.

Key words: steel wire wound reinforcement, composite pipe, stability, experimentation, external pressure