【摘要】 为了研究解决燃油锅炉热声振动问题,以一台660 MW机组亚临界燃油锅炉发生热声振动后经过多次改造并最终消除振动的过程为研究实例,表明降低燃烧器/炉膛温度差、调整燃烧器/炉膛尺寸能有效的消除第一类Rijke和Sondhauss型热声振动;优化燃烧器/炉膛流场、调整燃料/空气比例以及在设计阶段综合考虑燃烧器和炉膛,能有效的避免因湍流燃烧导致的第二类热声振动。更多还原

【Abstract】 To solve the problem of thermal acoustic vibration in large oil burning boiler,we analyze the generating mechanism of the main two types of thermal acoustic vibration. An example is put forwards for removing the thermal acoustic vibration in a 660 MW subcritical oil boiler after many times of retrofitting,which shows that lessening temperature gap and adjusting the dimension parameter between wind box and furnace can remove the Rijke and Sondhauss model thermal acoustic vibration. Optimizing the wind box and furnace flowing,adjusting the radio of fuel and air,comprehensively considering the wind box and furnace design can make the boiler avoid the second model thermal acoustic vibration which caused by turbulent combustion.更多还原