Thermal dehydrogenation device used after structural part welding

The utility model relates to a post-welding thermal dehydrogenation device for a structural member, which comprises a main body, a heating cavity arranged inside the main body, an inner box body fixedly connected inside the heating cavity, an air inlet pipeline fixedly connected to one end of the main body, a fixed box fixedly connected to one end of the air inlet pipeline far away from the main body, and an air pump fixedly connected to one end of the fixed box far away from the air inlet pipeline. The hydrogen removal device has the following advantages that the air pump is used for extracting nitrogen and extruding hydrogen to be discharged into the fixed box, so that the hydrogen is conveniently collected and heated, the nitrogen is heated through the hydrogen, and the hydrogen removal temperature is conveniently kept; the fan blades are driven by the motor to rotate, air flowing is facilitated, and heat dissipation is accelerated; the electric push rod drives the fixing groove to move up and down, and st