Semi-direct-fired and semi-premixed type boiler turbocharged burner

Abstract

The invention provides a semi-direct-fired and semi-premixed type boiler turbocharged burner. The semi-direct-fired and semi-premixed type boiler turbocharged burner comprises a fuel gas vertical pipe, a fuel gas horizontal pipe, a fuel gas nozzle, a burner piece, a burner fire erupting opening, a burner body, a double-impeller fan, a waste gas exhausting outlet, a combustion chamber, a heat exchanger, an air press-in pipeline and a fuel gas inlet. The semi-direct-fired and semi-premixed type boiler turbocharged burner is characterized in that the burner body is arranged at the bottom of the combustion chamber, and the burner body is fixedly connected with the combustion chamber mutually, and the fuel gas horizontal pipe is arranged on one side of the burner body, the fuel gas vertical pipe is arranged at the lower end of the fuel gas horizontal pipe, and the fuel gas vertical pipe communicates with the fuel gas horizontal pipe mutually. According to the semi-direct-fired and semi-premixed type boiler turbocharged burner, a good combustion condition can be ensured, and the amount of air pressed into the combustion chamber can be simultaneously increased with the increase of an exhaust air rate, the safety, stabilization and reliability are better than a current regulating mode of electric control; and a mode of a combination of direct combustion and premixing is adopted, the exhaust air rate is high, the carbon dioxide emissions can be reduced, and the advantage of reducing environmental pollution effectively is realized.

Description

technical field [0001] The invention relates to the technical field of boiler combustion equipment, in particular to a semi-direct-fired semi-premixed turbocharged boiler burner. Background technique [0002] At present, as a mechatronic equipment with a high degree of automation, the burner can be divided into five major systems from the functions it realizes: air supply system, ignition system, monitoring system, fuel system, and electric control system. The function of the air supply system is to send air with a certain wind speed and volume into the combustion chamber. Its main components are: housing, adjustable speed fan motor, fan impeller, fan speed controller; the function of the ignition system is to ignite the air and fuel. Its main components are: ignition transformer, ignition electrode and electric fire high voltage cable. Flame length, cone angle, and shape can be designed according to user requirements; the function of the monitoring system is to ensure the ...

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Problems solved by technology

[0004] At present, the working principle of the existing burner is: the natural gas after the proportional pressure adjustment reaches the gas horizontal pipe through the gas vertical pipe, and then is sprayed into the interior of the burner piece through each gas nozzle, and the natural gas in the internal space of the burner piece After the air is mixed, it is ejected from the burner nozzle for combustion. However, the existing turbocharged boiler burners are naturally mixed with air for combustion. Although the air-fuel ratio of 10:1 can be satisfied from the design of the mechanism, But in actual work, the air in the combustion chamber is entered by the negative pressure generated by the double impeller fan. Therefore, due to the influence of various natural environments, the air entering is often smaller than the design requirements, and the fluctuation is large, which directly affects Combustion quality, and especially the central part of the flame combustion, due to the combustion characteristics, the central part of the flame is extremely anoxic, and the natural inhalation of air alone is far from meeting the combustion conditions, so excessive exhaust gas and harmful impurities, pollute the environment

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