In the actual operation of boiler

the presence of fly ash and coking will block the measuring holes in furnace flame infrared temperature detection system

resulting in a decrease in the accuracy of the furnace temperature measurement system. To solve this problem

this paper designs a new type of decoking device based on the principle of air cannon

and applies it in the boiler flame infrared temperature detection system. This device realizes the detection and discrimination of the coking and clogging of the measuring hole by analyzing and processing the image of the measuring hole. The impact force formed by the release of compressed air in the air cannon is used to drive the hammer to hit the coking. Combined with the vibrating air hammer

the hammer vibration is promoted

and cooling air are applied to maintain the cleanliness of the hammer itself

so as to effectively remove the coking of the flame infrared temperature detection system. After verification

the designed coking device can effectively remove the coking of the furnace flame infrared temperature detection system and ensure the accuracy of flame temperature measurement. The entire device can be installed in a small space and has strong practicability.