In the case of large variation of the operating parameters of the industrial gas steam boiler, the "fast regulation" and the "overregulation" shall be adopted so that the parameters can be changed as soon as possible, that is, the "coarse adjustment".
In particular, in case of accident treatment, the adjustment of water level should be noted. in case of an accident, such as that influence of the "load shedding" industrial gas steam boiler fire-extinguishing "and the like, the water level change amplitude at this time is very large," 's false water level, the change speed is also very fast, and the operation personnel are required to react quickly and adjust in time, and at the same time, if the mother control water supply system is the mother control water supply system, several furnaces influence each other, and the normal water supply pressure is low, in the event of an accident In the case, the water level of several boilers is changed at the same time, and the "water-saving" phenomenon is serious, so it is more necessary to coordinate with each other at the time of coarse adjustment. And the accident expansion caused by improper human adjustment is avoided. For example, the industrial gas steam boiler caused by improper water level regulation caused by improper water level regulation; when the "industrial gas steam boiler fire-extinguishing" is in "Load shedding of steam turbine", the water is full of water due to improper water level regulation; and even when a blower of an industrial gas steam boiler is tripped, the rotating speed of the lower layer is too large to cause the air duct to block and the like.
After "rough tuning", when the parameters tend to be stable, the "fine tuning" and "fine tuning" mode are used to control the parameters to stabilize slowly. For the regulation of steam pressure, "excessive regulation" is an adjustment mode at the expense of increasing heat loss, especially when the speed of powder feeder does not fluctuate greatly up and down, and the oxygen content fluctuates, resulting in a change in combustion conditions in the furnace.
At this time, the incomplete combustion loss of some fuels increases greatly, which has a great influence on the thermal efficiency of the unit. Therefore, this kind of operation mode should be avoided as far as possible. When "combustion automatic" is adopted, the fluctuation range of the speed of the powder feeder should be monitored, and it is found that the fluctuation range is too large, so the automatic operation should be lifted and the manual operation should be carried out. and manual``fine adjustment'' is adopted to improve the thermal efficiency of the unit.
