锅炉构架叠梁的安装工艺

Erection method of laminated beams of boiler structure

韶关发电厂300MW机组W形火焰锅炉承重构架有3根大板梁为叠梁,由上梁和下梁叠合为整体梁。在安装施工时,由于叠梁的长度和高度较大,必须把下梁和上梁分别吊装,就位后才组合,使得安装存在一定的难度。对此,分析了叠梁的设计特点并提出了合理的安装工艺。该施工方案解决了受场地所限造成的吊机布置问题和解决了下梁就位后处于简支梁状态的下梁因自重所产生的向下挠度问题,使上、下梁就位后能顺利装配。实践证明,施工方案是可行的,达到了预期目的。

Owing to space limitation,the upper and the lower sub beams of the three laminated beams for the 300 MW unit W firing boiler in Shaoguan Power Plant have to be erected separately before being combined.Therefor,the designed features of the laminated beams are analyzed and a method presented,which enables successful erection by solving the crane layout problem and the downward bending of the lower beams when preliminarily erected.