Hearth negative pressure control method and system and electronic equipment

Abstract

The invention relates to a hearth negative pressure control method and system and electronic equipment. The method comprises the steps that after any one air feeder in an air and smoke system is started, the other air feeder in the air and smoke system and an outlet baffle connected with the other air feeder are closed; when an outlet baffle connected with the started air feeder is opened and the opening time exceeds a preset time period, a movable blade of the started air feeder is controlled to operate at a first working speed until the outlet baffle connected with the started air feeder is completely opened; and the movable blade of the started air feeder is controlled to operate at a second working speed, the other air feeder in the air and smoke system starts, a movable blade of the other air feeder is controlled to operate at a preset working speed so as to control the total air volume of a hearth in the air and smoke system to enable the negative pressure of the hearth to be within a preset target range, and the first working rate is smaller than the second working rate. Compared with an existing regulation and control method, disturbance to the negative pressure of the hearth is small and is within the preset target range, and the probability of hearth explosion is reduced.

Description

technical field [0001] The invention relates to the technical field of industrial process control, in particular to a furnace negative pressure control method, system and electronic equipment. Background technique [0002] The air and smoke system refers to the pipeline system that supplies the air required for boiler fuel combustion and the combustion products (flue gas) to be discharged into the atmosphere from the chimney after passing through various heat exchangers and pollutant treatment devices. Heat is normal. The control of the wind and smoke system is very important to the safe operation of the unit. [0003] Commonly, air and smoke systems such as figure 1 As shown, it includes two sets of air preprocessors, two sets of primary fans, two sets of blowers and two sets of induced draft fans connected to the boiler furnace, wherein: the two sets of primary blowers are used to deliver fuel to the furnace, and the two sets of blowers are used to Send air to the furna...

AI Technical Summary

Problems solved by technology

[0009] In view of the disadvantages of the prior art that the negative pressure of the furnace decreases instantaneously during the start-up process of the wind and smoke system, causing great damage to the furnace; the adjustment effect of the negative pressure of the furnace is not obvious, and the disturbance is relatively large. System and electronic equipment, while solving the above shortcomings, also achieve the purpose of avoiding the jamming of the outlet baffle

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