Corner flue of CFB boiler and assembly process thereof

Abstract

The invention provides a corner flue of a CFB boiler and an assembly process thereof. The corner flue of the CFB boiler comprises an L-shaped wall body, a box iron frame and locating steel parts. The L-shaped wall body is made of a membrane wall, a flue body is formed on the inner side of the wall body, the box iron frame is arranged on the inner side of the wall body and supports the wall body, the membrane wall is composed of airtight tube panels formed by welding flat steel and tubes in an assembling mode, and the locating steel parts are welded to the flat steel. The locating steel parts comprise a left locating steel plate and a right locating steel plate, wherein the left locating steel plate and the right locating steel plate are arranged on the two sides of the box iron frame respectively. According to the corner flue of the CFB boiler and the assembly process thereof, the box iron frame is arranged in the wall body, the locating steel parts are arranged on the two sides of the box iron frame, the left locating steel plate and the right locating steel plate of the locating steel parts fix the box iron frame in the vertical direction, and therefore the structure of the corner flue of the CFB boiler is more stable, assembly is convenient, the regulation workload of butt-joint installation on site can be reduced, and use is convenient.

Description

technical field [0001] The invention relates to a corner flue of a CFB boiler and an assembly process thereof. Background technique [0002] CFB boilers are commonly referred to as circulating fluidized bed boilers and are a type of coal-fired boilers. Corner flue is an important part of CFB boiler. The corner flue of a CFB boiler should have a stable structure because it is used for gas passage, and it should be easy to assemble in consideration of efficiency. However, the existing corner flue has many parts and is relatively irregular, so assembly is time-consuming. The work is longer, especially the stability of the structure is not ideal. [0003] In addition, most of the corner flues of CFB boilers are irregular pipes, so they are arranged manually, and after welding large-area V-shaped nails and Y-shaped nails, if the final size and the position of the rigid beam attachment cannot be well controlled, it will cause problems. On-site installation is a hassle. [0004...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a CFB boiler corner flue and its assembly process to solve the corner flue existing in the prior art because there are many parts and relatively irregular, the assembly time-consuming and labor-intensive, especially the stability of the structure Unsatisfactory and other issues

Images