中国塑料 ›› 2025, Vol. 39 ›› Issue (2): 60-66.DOI: 10.19491/j.issn.1001-9278.2025.02.011

• 加工与应用 • 上一篇    下一篇

燃气用高密度聚乙烯电熔管件熔接研究

徐璐1, 刘剑2, 王振超1,3(), 张士军1, 郄继春1, 尤启江1, 蔡智会2()   

  1. 1.罗森博格(无锡)管道技术有限公司,江苏 无锡 214161
    2.温州市特种设备检测科学研究院,浙江 温州 325000
    3.江南大学机械工程学院,江苏 无锡 214122
  • 收稿日期:2024-05-08 出版日期:2025-02-26 发布日期:2025-02-27
  • 通讯作者: 王振超(1975—),男,工程师,研究领域为高分子材料焊接技术与装备,charlie.wang@rothenberger.cn
    蔡智会(1985—),男,工程师,研究领域为承压设备加工、检验技术及无损检测可靠性,zhihui.cai@wzsei.com
    E-mail:charlie.wang@rothenberger.cn;zhihui.cai@wzsei.com

Study on welding of electrofusion fittings for high⁃density polyethylene natural gas pipeline

XU Lu1, LIU Jian2, WANG Zhenchao1,3(), ZHANG Shijun1, QIE Jichun1, YOU Qijiang1, CAI zhihui2()   

  1. 1.Rothenberger (Wuxi) Pipe Technologies Co,Ltd,Wuxi 214161,China
    2.Wenzhou Special Equipment Testing Center,Wenzhou 325000,China
    3.School of Mechanical Engineering,Jiangnan University,Wuxi 214122,China
  • Received:2024-05-08 Online:2025-02-26 Published:2025-02-27
  • Contact: WANG Zhenchao, CAI zhihui E-mail:charlie.wang@rothenberger.cn;zhihui.cai@wzsei.com

摘要:

研究了电熔熔接技术用于小口径高密度聚乙烯(PE⁃HD)燃气管道和管件的连接时,环境温度与输入能量对电熔接头力学性能的影响,设置了7组参数进行实验,在熔接过程中对电熔焊机输出的电压、电流以及管材和管件的熔接界面温度等参数进行了采集。随着环境温度增加,熔接界面温度逐步提高,熔接接头的剥离强度逐步提高;随着输入电压的增加,输入能量增加,熔接接头的剥离强度也逐步提高;同时发现较高的输入能量会导致过焊的现象,未去除管材表皮层影响了熔接质量。建议采用智能型电熔焊机以及数据采集与管理软件,全程监测能量输入,根据环境温度以及熔区温度场模型对输入能量进行自主调节,智能化管控电熔熔接质量。

关键词: 高密度聚乙烯管, 电熔管件, 智能电熔焊机, 能量采集与管理系统, 剥离强度

Abstract:

In this paper, the effects of ambient temperature and input energy on the mechanical properties of electrofusion joint used in the connection of small⁃caliber high⁃density polyethylene (PE⁃HD) gas pipes and pipe fittings were studied. Seven sets of parameters were applied for experiments, and the voltage, current, and welding interfacial temperature of the pipes and pipe fittings were collected during the welding process. The interfacial temperature increased gradually with an increase in the ambient temperature, and meanwhile the percentage of weld peeling decreases gradually. With an increase in the input voltage, the input energy increased, but the percentage of weld peeling decreased gradually. Furthermore, the higher input energy resulted in a phenomenon of over⁃welding. The failure in the removal of the skin layer of the pipe affected the welding quality. The intelligent electrofusion welding machine and data management software were recommended for use to monitor the energy input throughout the process, adjust the input energy in real time, and intelligently identify the quality of the weld.

Key words: high?density polyethylene pipe, electrofusion fitting, intelligent electrofusion equipment, energy collecting and managing system, stripping strength

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