Long pipeline internal coating sectional type gas inlet anode potential modulation plasma uniformizing device

The invention discloses a sectional type gas inlet anode potential modulation plasma uniformizing device for coating a film in a long pipeline, and aims to solve the problem of non-uniform deposition of a film layer on the inner surface of the existing long pipeline. According to the segmented gas-guide tube anodes in the segmented gas inlet anode potential modulation plasma uniformizing device, a plurality of hexagonal tubes are arranged in the circumferential direction of a central guide tube, the multiple segmented gas-guide tube anodes are sequentially connected to form a gas-guide tube assembly, and a plurality of insulated wires and tensioning steel wires are arranged in the central guide tube of the gas-guide tube assembly in a penetrating mode; each insulated wire is electrically connected with a wire connector in the corresponding segmented gas-guide tube anode, an insulated connector is inserted between every two adjacent segmented gas-guide tube anodes in the gas-guide tube assembly, end portion in