Nozzle structure of water spraying desuperheater

The invention relates to a spray nozzle structure of a spray desuperheater, which belongs to the field of waste heat boiler equipment and comprises a spray pipe, a second sleeve, a fastener, an upper flange, a lower flange and a first sleeve, the bottom end of the spray pipe is arranged in the spray desuperheater, and the first sleeve is sleeved on the lower portion of the spray pipe. The bottom end of the first sleeve is fixed to a shell of the water spraying desuperheater, the top end of the first sleeve is connected with a lower flange, a second sleeve is fixed to the upper portion of the water spraying pipe, an upper flange is fixed to the bottom end of the second sleeve, and the lower flange and the upper flange are connected through a fastener. A certain gap is reserved between the inner wall of the first sleeve and the outer wall of the water spraying pipe. The water spraying pipe can be fixed through a stable structure; as the fixing structure of the flange and the bolt provides detachable bolt connec