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广西某厂运行4年的2台150MW循环流化床锅炉燃煤发电机组,因“四管”泄漏多次造成停机抢修,严重威胁机组的安全运行。可见,防止锅炉四管漏泄是提高火力发电机组安全可靠性的需要,是提高发电设备经济效益的需要。1锅炉“四管”泄漏原因锅炉受热面的水冷壁、过热器、再热器和省煤器管路称为锅炉“四管”。锅炉“四管”泄漏占火电机
Two 150MW circulating fluidized bed boiler coal-fired generating units operated by a factory in Guangxi for 4 years caused severe shutdown of units due to multiple downtimes and repairs caused by leakage of “four pipes”. It can be seen that preventing the leakage of the four pipes of the boiler is the need to improve the safety and reliability of the thermal power generating units and is the need to increase the economic benefits of the power generating equipment. 1 boiler “four tubes ” cause of leakage boiler heating surface water wall, superheater, reheater and economizer pipe called boiler “four tubes ”. Boiler “four tubes ” leakage accounted for the fire motor