High pressure substation equipment closely takes electrostatic precipitator including the insulator spindle, installs the lithium cell on the insulator spindle, the installation hair -dryer is connected with the hair -dryer through the electric wire on the lithium cell, and it is fixed with insulator spindle and hair -dryer that the lithium cell passes through fixing device, and the air outlet periphery of hair -dryer sets up the external screw thread, cooperation connection extension mouth on the external screw thread. The utility model has the advantages of: the utility model discloses in, connect the hair -dryer through the insulator spindle, make the staff can face the insulating surface cleaning of implementation of high -pressure substation equipment on ground, prevent large tracts of land power failure accident such as high -pressure substation equipment insulation breakdown, tripping operation, guarantee the safe distance of staff and high voltage live equipment, improve personnel's work safety nature. The hair -dryer is connected with the lithium cell, guarantees that cleaning work links up, and is clean efficient. The utility model discloses can clean when high -pressure substation equipment moves with electricity, avoid causing the interference to high -pressure substation equipment's normal operating.