2711-K5A8L2

2711-K5A8L2

2711-K5A8L2

在锅炉燃烧调节过程中，要求在不同的负荷工况下保持蒸汽压力恒定。为了保证锅炉蒸汽产量与供热之间的相对平衡，有必要调入炉煤量、空气量和风压，使炉膛热量达到值。空气量和炉内空气压力决定了煤层的燃烧率和效率，并影响锅炉蒸汽产量和恒定的主蒸汽压力。

传统的风量和风压调节是通过电动执行器调节节气门开度来实现的，其缺点如下:

1)负荷大时，开大风门，增加炉内风压和风量，加快煤层燃烧速度，以增加单位时间的蒸汽产量，满足供汽要求；当负载较小时，风门关小。在两种情况下，引风机都保持额定转速运行。当负荷较小时，引风机产生的巨大风量被风门挡住，只有一小部分进入风道，增加了压差损失，浪费了电能，增加了生产成本，降低了经济效益和社会效益。

2711-K5A8L2 

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