Design method of novel ultra-high voltage outgoing line device, and outgoing line device structure

The invention relates to a design method of a novel ultra-high voltage outgoing line device. The method adopts sulfate pulp and heat-resistant crepe paper as primary layer insulation of a uniform tube/ball, and a double-layer cylinder structure is adopted outside a first oil gap of the primary layer insulation; a pressure equalizing pipe structure is fixed through a multi-dimensional surrounding supporting structure, and the pressure equalizing ball structure is fixed through the multi-dimensional surrounding supporting structure in the vertical direction. The invention further relates to a novel ultra-high voltage outgoing line device structure. The novel ultra-high voltage outgoing line device structure comprises the voltage equalizing tube structure and a voltage equalizing ball structure ball which are matched in an inserted mode, and the voltage equalizing tube structure is fixed in the horizontal direction through an auxiliary insulator and a first surrounding supporting structure; the pressure equalizi