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1前言2001年3月对广州珠江电力有限公司1#电站锅炉(1021t/h)进行内部检验时,发现过热器一级减温器内的多孔喷管断裂成多块碎片,过热器二级减温器内的多孔喷管中部胀粗。2过热器减温器检验情况过热器一级、二级减温器是多孔喷管式减温器,结构如图1所示。1)用内窥镜对过热器一级减温器(低温段)进行宏观检验,情况如下:检验范围:减温器喷水套筒内壁,长度约3.3mm。检验情况及主要问题:①水管前端断裂,断
1 Foreword In March 2001, an internal inspection of Guangzhou No. 1 Power Station Boiler (1021t / h) at Guangzhou Pearl River Power Co., Ltd. revealed that the multi-hole nozzle in the first-stage desuperheater of the superheater broke into multiple pieces and the superheater two- In the middle of the thermostat porous nozzle expansion. 2 superheater desuperheater inspection superheater level, two desuperheater is a porous nozzle desuperheater, the structure shown in Figure 1. 1) A macro inspection of the superheater primary desuperheater (low temperature section) with an endoscope is carried out as follows: Inspection range: the inner wall of the desuperheater spray sleeve has a length of about 3.3 mm. Test conditions and the main problems: ① pipe front fracture, broken