卧式内燃燃油(气)湿背式锅炉由于设计和制造上的一些缺陷,笔者在检验此类锅炉中发现了一些问题。1存在问题1)卧式内燃燃油(气)锅炉回燃室前管板上的焊接烟管管端伸出量一般制造厂的图纸要求为4～6mm,其管端伸出量比焊角高度至少高出1～2mm。在这高出焊角的1～2mm管端上,在安装监督检验中经常发现管端焊接熔穿而造成的小缺口缺陷(见图1)。 Horizontal internal combustion fuel (gas) wet back boiler Due to some design and manufacturing defects, the author found some problems in the inspection of such boilers. 1 problems 1) Horizontal internal combustion fuel (gas) boiler back to the combustion chamber on the front tube plate welded pipe end of the amount of the general drawings of the manufacturer’s requirements for the 4 ~ 6mm, the tube end of the amount of projection than the welding height At least 1 ~ 2mm above. In this 1 ~ 2mm higher than the welded pipe end, often found in the installation of supervision and inspection of the welding side of the pipe welding caused by the small gap defects (see Figure 1).