High-temperature radar level gauge

The utility model discloses a high temperature type radar level gauge, which relates to the technical field of radar level, and comprises a functional disc body, the bottom of the functional disc body is connected with a connecting rod, the connecting rod is connected with a flange, and the bottom of the connecting rod is connected with a sensor body. Nitrogen stored in a nitrogen storage box is guided into a sensor body through a connecting pipe and a spraying pipe, the sensor body can be cooled, dust attached to the sensor body is blown off, the situation that the dust influences a detection result is avoided, a sliding plate and a limiting rod can be driven to move by pulling a force application rod, the sliding plate extrudes a compression spring, and the detection result is more stable. When the nitrogen storage box moves to the limiting rod and does not abut against the nitrogen storage box, the nitrogen storage box is taken down from the connecting rod for overhauling, and the nitrogen storage box can