锅炉短管弯头表面质量提升与侧助推弯管设备优化设计

Improvement of Surface Quality of Boiler Short Tube Elbows and Optimization Design of Side Boosting Tube Bending Equipment

随着大容量、高参数锅炉的发展,受热面结构更加紧凑,对弯头的质量要求更高。东方锅炉新引进的侧助推弯管设备,解决了弯头椭圆度和减薄量等问题,但是锅炉短管弯制时表面存在划痕、压痕等质量问题。本文从弯管原理、弯管过程分析划痕、压痕等质量问题产生的原因,通过优化设计滑槽平衡调节装置和托料装置来解决弯头的表面质量问题。

With the development of boilers with larger capacity and higher parameters,the structure of heating surface is more compact,which requires better quality of elbows.The deployed side boosting tube bending equipment solves the problems in elbow ovality and tube wall thickness reduction,but such defects as scratch and indentation occurring on the surfaces of elbows during their bending process remain unchanged.In this paper,the causes of scratch and indentation are analyzed from tube bending principle and bending process,and the elbow surface quality problems are solved by optimizing the design of the chute balance adjustment device and the short tube supporting device.