GIS equipment partial discharge detector and use method

The invention discloses a GIS equipment partial discharge detector and a use method. The GIS equipment partial discharge detector comprises a detector body and a GIS equipment body, wherein the detector body is connected with one side of the GIS equipment body through a gas conveying pipe, and a closable valve is arranged at one end of the gas conveying pipe; a replacement mechanism is arranged at the corner of the transparent observation plate, and the transparent observation plate can be disassembled, so that reactants can be conveniently replaced; one end of the detector body is communicated with an acceleration mechanism, so that the reaction speed in the detector body can be increased. The GIS equipment partial discharge detector is provided with the replacement mechanism, lead screws arranged on the two sides can be moved by rotating a rotating block at the top of the replacement assembly so as to be separated from clamping grooves formed in the detector body, a transparent observation plate and the rep