Automatic exhaust device of transformer

The utility model relates to the technical field of transformers. The automatic exhaust device comprises an exhaust pipe, the device comprises a gas relay, a gas collection box and an electromagneticvalve, the gas relay is installed on a pipeline between an oil conservator of the transformer and an oil tank of the transformer. Wherein the gas collecting box is installed on the outer side of the transformer, a gas inlet of the gas collecting box is communicated with a gas outlet of the gas relay through a gas inlet pipe, a gas outlet pipe is communicated with the gas outlet of the gas collecting box, an electromagnetic valve is installed on the gas outlet pipe, and a light gas dry reed contact of the gas relay is electrically connected with the electromagnetic valve. The device is reasonable and compact in structure; convenient use, a gas outlet pipe is arranged on a gas outlet of a gas collecting box; and the electromagnetic valve electrically connected with the light gas dry reed contact is mounted on the ga