Bus PT cabinet with gas tank pressure relief mechanism

The utility model relates to the technical field of electrical cabinets, in particular to a bus PT cabinet with a gas tank pressure relief mechanism, which comprises a main machine body, the pressure relief mechanism is mounted at the bottom of the main machine body and comprises a pressure relief hole formed in the bottom of the main machine body, a support column is rotatably mounted in the pressure relief hole, and a gas tank is mounted in the support column. A pressure relief plate is fixedly installed on the outer surface of the supporting column, a torsional spring is arranged between the pressure relief plate and the pressure relief hole, a ventilation mechanism is installed in the pressure relief plate, and a torsional spring is arranged between the pressure relief plate and the pressure relief hole. Ventilation in daily use is guaranteed through the ventilation mechanism on the pressure relief plate, when the internal air pressure is large, the ventilation mechanism can be closed, so that the force o