证券之星消息,根据天眼查APP数据显示中国石油(601857)新获得一项实用新型专利授权,专利名为“管道换管补偿器”,专利申请号为CN202422367100.X,授权日为2025年6月27日。专利摘要:本实用新型公开了一种管道换管补偿器,属于采输气管道安装工程技术领域,包括可调节相对距离的内管和外管,以及活套式法兰Ⅰ和活套式法兰Ⅱ,内管的一端连接有内管法兰,外管的靠近内管法兰端连接有外管后法兰;...
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