Rainproof closed cabin penetration piece for roof

The utility model relates to a roof rain-proof closed cabin penetration piece used for a seaborne fixed platform roof penetration bed board. According to the technical scheme, the roof rainproof closed cabin penetration piece is installed on a roof of an electrical room and is characterized by comprising a structural cabin penetration piece fixedly installed on the roof and used for communicating the interior and the exterior of the roof of the electrical room; the closed cabin penetration piece is connected with the structural cabin penetration piece, and the closed cabin penetration piece is filled with a plugging body; one end of the pipeline is arranged in the electrical room, and the other end of the pipeline penetrates out of the room from the interior of the electrical room through the structural penetration piece and the closed penetration piece; the closed cabin penetration piece is provided with a shell, a cover plate and a plugging body, one end of the shell is fixedly installed on the structural c