The utility model relates to the technical field of combustors, in particular to a
combustor protection device which comprises a
combustor body, a
combustion cylinder is arranged on the
combustor body, a protection cylinder is arranged on the outer side of the
combustion cylinder in a sleeved mode, and a cavity is formed in the interval between the protection cylinder and the
combustion cylinder and used for air circulation. An air inlet
pipe communicated with the cavity is arranged on the side, close to the combustor body, of the protection
barrel and used for being connected with a fan, a plurality of ventilation holes are formed in the side wall of the side, away from the combustor body, of the protection
barrel, and the ventilation holes are communicated with the cavity. The utility model has the beneficial effects that air can be blown into the surface of the combustion cylinder through the fan for heat dissipation; meanwhile, the combustion cylinder is covered, on one hand, the combustion cylinder is protected, the
corrosion condition of the combustion cylinder is reduced, and the combustion cylinder is prevented from being damaged due to collision, and on the other hand, heat insulation and
scalding prevention are achieved, workers can be protected, and the situation that the workers touch the combustion cylinder due to misoperation and are damaged is avoided.