Protection device for combustor igniter

The invention relates to a protection device for a combustor igniter. The protection device comprises the igniter, an inner sleeve, an outer sleeve and a casing. Exhaust ports are uniformly distributed in the inner sleeve and the outer sleeve. An ignition end is fixed to the front end of the igniter. The front end of the igniter is sleeved with an air spraying port. Baffles are fixed to the frontend of the inner sleeve and the front end of the outer sleeve in a sealed manner. The left end of the casing communicates with a gas compressor cavity of a gas turbine. A combustion barrel is arrangedin the casing in a sleeving manner. An opening in the right end of the combustion barrel leads to the gas turbine. Oil spraying pipes are uniformly distributed on the side wall of the combustion barrel and communicate with an oil supply pipe. Fuel oil is provided through the oil supply pipe, and sprayers of the oil spraying pipes point to a swirler. According to the protection device, the double-layer structure of the inn