High-temperature gas valve with safety valve function

The invention provides a high-temperature gas valve with a safety valve function. The valve comprises a valve shell, a valve heat insulation layer, a valve element rod, a valve seat, a spraying pipe,a driving device and a sealing ring, wherein the driving device controls the valve element rod to reciprocate, the valve element rod and the valve shell are dynamically sealed through the sealing ring, the valve element rod works in the airflow facing direction, and the driving device has the capacity of absorbing overload impact; the valve element rod and the valve seat are sealed in a contact mode to close the valve, and the valve does not generate thrust; and the valve element rod is separated from the valve seat to open the valve, and the valve generates thrust. When the valve is closed, the driving force of the driving device is smaller than valve aerodynamic force equivalent to the maximum design pressure intensity of a combustion chamber, the driving device can absorb impact under the overload condition, an