Pipe gallery internal alarm device

The utility model discloses a pipe gallery interior alarm device, which comprises a lower cover and an upper cover, notches are equidistantly arranged at the top end of the upper cover, a sensitivity adjusting assembly is fixedly arranged in the upper cover, the sensitivity adjusting assembly comprises a flow guide cover, a flow guide cover, a movable pipe and a fan, the flow guide cover is fixedly arranged at the bottom end of the upper cover, and the flow guide cover is fixedly arranged at the bottom end of the upper cover. Compared with the prior art, the infrared maze has the advantages that the distance between smoke and the infrared maze can be adjusted through the sensitivity adjusting assembly, interference of external gas on the smoke is reduced, the smoke is prevented from entering the infrared maze, the smoke is prevented from entering the infrared maze, and the smoke is prevented from entering the infrared maze. According to the infrared maze, the smoke concentration is reduced, the problem that t