Gas relay for transformer

The invention relates to the technical field of transformers, and discloses a gas relay for a transformer, which comprises a connecting pipe, a fixer, a floating ball device, a top plate, an exhaust valve, a mounting block, an opening cup, a wiring terminal and an oil immersion lens, and is characterized in that the fixer is movably connected to the top of the connecting pipe, and the floating ball device is movably connected to the top of the fixer; the top plate is movably connected to the top of the floating ball device, and the exhaust valve is movably connected to one end of the top of the top plate. According to the gas relay for the transformer, the dust filter is arranged on the exhaust valve, so that internal dust is cleaned, the situation that the exhaust pipe is blocked by the dust, and consequently the use safety risk of the gas relay is caused is avoided, the fixator is installed at the bottom of the floating ball device, and the gas relay is installed on the transformer through the fixator; and