A hoisting method for boiler rear roof superheater components

Abstract

The invention provides a hoisting method of a rear boiler roof superheater assembly of a boiler. The hoisting method comprises the following steps: ground assembling is conducted, specifically, a rearboiler roof superheater tube panel is erected on the ground, a vertical low-temperature reheater, an upper-section mid-partition superheater, a vertical low-temperature superheater and a suspension tube are mounted in wall penetrating holes of the rear boiler roof superheater tube panel in a penetrating mode through a crawler crane, and the other ends of the vertical low-temperature reheater, theupper-section mid-partition superheater, the vertical low-temperature superheater and the suspension tube are supported through a support; the assembly is overturned and hoisted, specifically, the assembled assembly is hoisted through the crawler crane and a horizontal tower crane to be overturned to be in a vertical state; and the assembly is hoisted in place, specifically, after being overturned, the assembly is hoisted in place through the horizontal tower crane, after being in place, the assembly is thrown to be hung on a boiler top plate secondary beam through a chain block, and after adjusting is completed, the assembled assembly is mounted. The hoisting method shortens the construction period greatly, a large part of a working face is completed on the ground, aloft work is reduced,safety is higher, and meanwhile, the cost of a main lifting appliance is reduced greatly.

Description

Technical field [0001] The invention belongs to the field of boiler construction and installation research, and in particular relates to a method for hoisting a superheater component of a boiler rear top. Background technique [0002] The back top superheater of the power plant boiler is arranged on the top of the back smoke shaft, the front is connected to the top superheater outlet header, the back is connected to the back wall, and the vertical section low temperature reheater (referred to as the vertical low reheater) and the upper partition are interspersed in turn. Wall superheater, vertical section low-temperature superheater (abbreviated as vertical low-pass), suspension pipe and other equipment. At present, the method of installing these parts of equipment in domestic thermal power unit boilers is to install the top superheater first, and start after all installations are completed The shortcomings of this construction method are the long construction period and the high...

AI Technical Summary

Problems solved by technology

[0002] The rear top superheater of the power plant boiler is arranged on the top of the rear smoke shaft, the front is connected to the outlet header of the top superheater, the rear is connected to the rear wall, and the vertical section low-temperature reheater (referred to as vertical low reheater) and the upper section partition are interspersed in sequence in the middle. Wall superheater, vertical section low-temperature superheater (referred to as vertical low superheater), suspension pipe and other equipment. At present, the method of installing these parts of equipment in domestic thermal power unit boilers is to install first and then the top superheater, and start after all the installations are completed. Install the superheater and suspension pipes of the vertical lower section, the vertical lower section, the middle partition wall in the upper section one by one. The disadvantage of this construction method is that the construction period is long and the installation cost is high.

Images