Air-fuel electronic ratio adjustment system

Abstract

The invention discloses an electronic air-fuel ratio regulation system. The detected temperature parameter of air entering a furnace is input into an electronic air-fuel ratio regulation controller; the theoretical minimum gas flow independently required by each of M preselected combustion condition points is integrated with the temperature of the air entering the furnace, so that the optimal air-fuel flow of each preselected combustion condition point is worked out; the air regulating valve opening degree matched with each optimal air-fuel flow and the fuel regulating valve opening degree matched with each optimal air-fuel flow are determined; and ignition is controlled to start; and after ignition, the combustion load in a hearth of combustion equipment is controlled to reaches the full load after sequentially passing through the M preset combustion condition points, and when the combustion load passes through each preset combustion condition point, an air regulating valve is controlled to be regulated to the air regulating valve opening degree matched with the current optimal air-fuel flow, and a fuel regulating valve is controlled to be regulated to the fuel regulating valve opening degree matched with optimal air-fuel flow. By the adoption of the electronic air-fuel ratio regulation system, the technical problem that the combustion efficiency in a hearth of existing combustion equipment is not high is solved, and an accurate air-fuel ratio is obtained.

Description

technical field [0001] The invention relates to the technical field of combustion, in particular to an air-fuel electronic ratio adjustment system. Background technique [0002] Fossil fuels, as non-renewable resources, are facing depletion in the process of global industrialization, and energy conservation and emission reduction have become a global theme. There are nearly 200,000 sets of gas-fired thermal equipment in operation nationwide, and the annual combustion of gas fuel is about 40-70 billion cubic meters. While consuming a huge amount of resources day after day, the combustion product CO 2 The emissions are about 77 million to 135 million tons per year, and the NOx emissions are correspondingly huge. [0003] At present, due to the poor air-fuel ratio of the conventional combustion equipment, the combustion efficiency is not high, and the load points of the combustion conditions are generally designed to be 4 to 6. Contents of the invention [0004] The embodi...

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Problems solved by technology

[0004] The embodiment of the present invention solves the technical problem of low combustion efficiency in the furnace of existing combustion equipment by providing an air-fuel electronic ratio adjustment system

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