SF6 pressure sensor with disassembly-free valve checking function

The utility model belongs to the technical field of electric power detection, and particularly relates to an SF6 pressure sensor with a disassembly-free valve checking function, which comprises a four-way ball valve body, a pressure sensor, an SF gas density relay, a checking valve, a main interface of the four-way ball valve, a gas chamber, a valve core and a switching handle, the pressure sensor, the SF gas density relay and the check valve are in threaded connection with the other three sides of the four-way ball valve body respectively, a gas chamber and a valve element are arranged in the four-way ball valve body, a switching handle is arranged outside the four-way ball valve body, and the switching handle is in joggle joint with the valve element; when the device is used, auxiliary positioning can be carried out on each 90-degree rotation of the switching handle and the fixed rod, so that the switching handle and the fixed rod can be rotated in place each time, the connection or disconnection operation