直埋补偿器保温层PE热缩套位移补偿结构

Displacement Compensation Structure of PE Heat Shrinkable Sleeve of Directly Buried Compensator Insulation Layer

直埋波纹管补偿器的常规保温结构对PE外护管的位移补偿能力弱,容易导致PE焊缝开裂,分析目前常规具有位移补偿能力保温结构存在的不足。提出改进的采用波纹状辐射交联聚乙烯热缩套位移补偿装置的保温结构,对改进后保温结构的技术要点、结构、性能测试过程及结果进行了探讨。

The displacement compensation abili- ty of conventional insulation structure of directly buried bellows compensator is weak for PE external protection pipe, which is likely to cause PE welding crack. The defects in the current conventional insulation structure with displacement compensation ability are analyzed. The improved insulation structure using corrugated radiation crosslinked PE heat shrinkable sleeve for displacement compensation is sign points, the structure, and results of the improved are discussed. put forward. The main deperformance testing process thermal insulation structure are discussed.