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1 概述近几年,我市连续有2台DZL2.8-0.7/95/70-AII型水管热水锅炉在使用不到2个采暖期,就先后发生相同的水冷壁爆管事故。其中1台锅炉在经过换管后,短期内再次发生爆管事故。爆管的锅炉均为单锅筒纵置式即“A”型或“人”字型锅炉;结构为烟气从炉膛后部左侧烟窗进入左侧对流管束,横向
1 Overview In recent years, the city has 2 consecutive DZL2.8-0.7 / 95/70-AII type water-tube hot water boiler in less than 2 heating period, it has occurred the same waterwall explosion tube accident. One of the boilers after the tube change, burst pipe burst again in the short term. Squib of boilers are single-drum longitudinal placement that is “A ” type or “person ” font boiler; structure for the flue gas from the rear left side of the furnace into the left side of the left side of the convection tube bundle, horizontal