燃气用高密度聚乙烯电熔管件熔接研究  

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

作　　者：徐璐 刘剑 王振超 张士军 郄继春 尤启江 蔡智会 XU Lu;LIU Jian;WANG Zhenchao;ZHANG Shijun;QIE Jichun;YOU Qijiang;CAI zhihui(Rothenberger(Wuxi)Pipe Technologies Co,Ltd,Wuxi 214161,China;Wenzhou Special Equipment Testing Center,Wenzhou 325000,China;School of Mechanical Engineering,Jiangnan University,Wuxi 214122,China)

机构地区：[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

出　　处：《中国塑料》2025年第2期60-66,共7页China Plastics

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。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 in-crease in the input voltage,the input energy increased,but the percentage of weld peeling decreased gradually.Further-more,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 intelli-gently identify the quality of the weld.

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 

分 类 号：TQ320.6[化学工程—合成树脂塑料工业]