Wall enclosure structure of pulverized coal fired boiler

The utility model relates to the technical field of pulverized coal boilers, in particular to a wall enclosure structure of a pulverized coal boiler, which can shorten a steam flow, reduce resistance and relieve the working pressure of a steam pocket, and comprises the steam pocket, a roof pipe, a horizontal flue and a steering chamber, one end of the roof pipe is connected with the steam pocket, and the other end of the roof pipe extends to the steering chamber. The horizontal flue comprises a front side enclosure wall and a front side enclosure wall pipe lower header, the steering chamber comprises a front enclosure wall, a rear enclosure wall, a rear side enclosure wall, a front enclosure wall pipe lower header, a rear enclosure wall pipe lower header and a rear side enclosure wall pipe lower header, the front enclosure wall comprises an upper thinning section and a lower merging section, the top of the front enclosure wall is connected with a middle header on the roof pipe, and the rear enclosure wall com