电缆低温敷设外护套开裂影响因素分析及力学仿真
|
摘要
结合护套材料的物理机械性能、护套挤出的工艺、外部机械力的作用、环境的作用、结构尺寸5个方面进行了电缆敷设过程中护套开裂影响因素分析,对电缆低温敷设过程中电缆存在内部毛刺和外部毛刺2种情况进行了力学仿真分析,提出预防电缆低温敷设过程中防止电缆外护套开裂的措施:严格控制敷设程序及敷设工艺,强化电缆外护套抗寒性,避免冲击和不必要剐蹭等。
The influence factors of sheath cracking in cable laying process are analyzed from 5 aspects of physical and mechanical properties,jacket extrusion process,external mechanical force,environmental function and structure size.Mechanical simulation analysis is made for two cases of internal burrs and external burrs of cables during low temperature laying process,and measures for preventing cable outer sheath cracking are put forward to prevent cable from being laid at low temperature,strictly control the laying procedure and laying process,strengthen the cold resistance of the outer sheath of the cable,avoid the impact and unnecessary scraping,etc.
The influence factors of sheath cracking in cable laying process are analyzed from 5 aspects of physical and mechanical properties,jacket extrusion process,external mechanical force,environmental function and structure size.Mechanical simulation analysis is made for two cases of internal burrs and external burrs of cables during low temperature laying process,and measures for preventing cable outer sheath cracking are put forward to prevent cable from being laid at low temperature,strictly control the laying procedure and laying process,strengthen the cold resistance of the outer sheath of the cable,avoid the impact and unnecessary scraping,etc.
引文
[1]额定电压1kV(Um=1.2kV)到35kV(Um=40.5kV)挤包绝缘电力电缆及附件第1部分额定电压1kV(Um=1.2kV)和3kV(Um=3.6kV)电缆:GB/T12706.1-2008[S].
[2]李国政.聚乙烯护套料的耐环境应力开裂性能[J].天津光电线缆技术,2011(3):10-15.
[3]王志峰.关于聚氯乙烯作为电力电缆外护套耐寒材料的应用[J].中国新技术新产品,2015(1):60-61.
[4]电气装置安装工程电缆线路施工及验收规范:GB50168-2006[S].
[5]宋丽亚,张道利,盛洞天.高压XLPE绝缘电力电缆外护套材料的选择[J].电线电缆,2014(3):22-26.
[6]周礼文.大外径电力电缆聚乙烯外护套开裂问题的探讨[J].电线电缆,2012(4):45-46.
[2]李国政.聚乙烯护套料的耐环境应力开裂性能[J].天津光电线缆技术,2011(3):10-15.
[3]王志峰.关于聚氯乙烯作为电力电缆外护套耐寒材料的应用[J].中国新技术新产品,2015(1):60-61.
[4]电气装置安装工程电缆线路施工及验收规范:GB50168-2006[S].
[5]宋丽亚,张道利,盛洞天.高压XLPE绝缘电力电缆外护套材料的选择[J].电线电缆,2014(3):22-26.
[6]周礼文.大外径电力电缆聚乙烯外护套开裂问题的探讨[J].电线电缆,2012(4):45-46.