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广东大唐潮州发电厂#2炉是一次中间再热、超临界压力变压运行的本生(Benson)直流锅炉。单炉膛、平衡通风、固态排渣、全钢架、全悬吊结构、Ⅱ型布置。末级过热器位于折焰角上方,沿炉宽方向排列共30片管屏,每片管组由20根管子绕制而成,进出口段上方的管子为州.5mm×7.5mm、SA-213T91,底部管子为φ4.5mm×7.5mm、SA-213TP347H。自2007年7月至2008年2月29日,#2机组一直运行,春节期间带过满负荷,后因为问题停机。3月7日启动,2007年3月8日并网带负荷几个小时,最高负荷约400MW,锅炉四管泄漏报警,确认锅炉爆管。1检查情况1.1爆管管子检查情况停炉后检查发现末级过热器进口B侧数第9排炉
Guangdong Datang Chaozhou Power Plant # 2 furnace is an intermediate reheat, supercritical pressure transformer operation Bunsen (Benson) DC boiler. Single hearth, balanced ventilation, solid slag, steel frame, full suspension structure, type Ⅱ layout. Overheating at the end of the superheater is located above the flare angle, arranged along the furnace width direction a total of 30 tube screen, each tube group is composed of 20 tubes wound from the top of the import and export section of the tube .5 mm × 7.5mm, SA -213T91, the bottom of the tube is φ4.5mm × 7.5mm, SA-213TP347H. From July 2007 to February 29, 2008, unit # 2 has been running, with overloaded load during the Spring Festival, after the shutdown due to problems. March 7 start, March 8, 2007 with the load on the grid a few hours, the maximum load of about 400MW, the boiler four pipe leak alarm to confirm the boiler squib. 1 check the situation 1.1 pipe burst tube inspection after shutdown found that the final superheater inlet side B No. 9 row furnace