One-key starting and stopping control strategy for coal mill system capable of automatically saving fuel oil

Abstract

The invention relates to a one-key starting and stopping control strategy for a coal mill system capable of automatically saving fuel oil. The one-key starting and stopping control strategy for the coal mill system capable of automatically saving the fuel oil comprises the steps of firstly, carrying out a test of starting and stopping mill groups by a combustor without using oil, modifying the control logic of the combustor according to a test result, accessing an operation signal of each mill group into a counting judgment function block, and calculating whether the operation of the two mill groups or the operation of the three mill groups is met currently; modifying the logic of the one-key start-stop function group of the mill groups, wherein the mill groups are in an oil-saving mode when the condition that the combustor is not put into use is met, and skipping the step of putting into use of an oil gun group; and executing all the steps in sequence when the condition that the combustor is not put into use is not met and the mill groups carry out the one-key starting step or the one-key stopping step, that is, the oil gun group is put into for combustion supporting. The one-key start-stop control strategy for the coal mill system capable of automatically saving the fuel oil has the advantages that the logic of the one-key starting and stopping steps of the mill groups is modified, two different starting and stopping modes of an oil-saving mode and a non-oil-saving mode are formed, and the oil gun group is controlled to be put into use so as to achieve the oil-saving purpose.

Description

technical field [0001] The invention relates to the field of coal-fired power generation, in particular to a one-button start-stop control strategy for a coal pulverizer system that automatically saves fuel. Background technique [0002] Coal-fired thermal power generating units use coal as fuel to produce electric energy. When starting or stopping the grinding group, it is usually necessary to release light oil for combustion to stabilize the combustion of the boiler. The specific procedure is: when starting the grinding group, first ignite the grinding group to be started. The oil burner corresponding to the group, and then warm up the grinding, start the coal mill, increase the amount of coal, etc., and wait for the coal amount of the grinding group to increase to the minimum coal amount, then exit the corresponding oil gun; when the grinding group is stopped, first reduce it to Minimum amount of coal, then ignite the oil burner corresponding to the grinding group to be s...

AI Technical Summary

Problems solved by technology

[0003] However, under certain working conditions, the combustion of the boiler is very stable, and even if the grinding group is started or stopped, it does not need light oil for combustion, so the existing control technology has the disadvantage of wasting fuel

The main reason for this shortcoming is that the automatic identification and judgment of boiler combustion conditions cannot be realized.

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