A water-cooled surface combustion gas device with different diameter ring ribs

Abstract

The invention discloses a water-cooled surface combustion gas device with different-diameter ring ribs, which comprises a different-diameter ring rib, a first-stage ring-mounted cooling water pipe and a second-stage ring-mounted cooling water pipe arranged on the different-diameter ring rib. The air intake tube is arranged outside the largest diameter ring rib of the radial ring rib, and the ignition gun hole / central secondary air duct is arranged inside the smallest diameter ring rib of the different diameter ring rib; The angle θ is arranged to form a "ladder"-shaped air intake surface, forming an equal-pressure air intake; the flow area of ​​the anti-tempering air intake micro-channel formed by the different-diameter ring ribs and the ring-mounted cooling water pipes gradually decreases along the air intake direction, and the outlet forms a continuous The "ladder" shaped burning plane. The invention can realize isobaric air intake, uniform gas, low temperature and low NO x Surface combustion can effectively prevent tempering and ensure stable, efficient, clean and safe combustion of gas fuel; meanwhile, the structure is simple and easy to manufacture, which is suitable for mass production.

Description

technical field [0001] The invention relates to the technical field of burners, in particular to a water-cooled surface combustion gas device with different diameter ring ribs. Background technique [0002] Although coal resources are still the main source of energy consumption in my country, a large amount of environmental pollutants such as nitrogen oxides and dust will be produced during the combustion of coal, and various post-processing technologies have also brought extremely high economic costs. In contrast, natural gas, as a clean energy, has the advantages of high combustion efficiency, low cost of pollutant control and less pollutant emission, which is more in line with the development requirements of "low-carbon economy". However, natural gas will still produce some air pollutants such as nitrogen oxides during the combustion process. According to their sources, they are mainly divided into thermal type, fast type and fuel type. The generation of fuel type and fas...

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Problems solved by technology

At present, the low-nitrogen combustion technologies of gas-fired boilers mainly include staged combustion, lean-burn premixing, flue gas recirculation, flameless combustion MILD, and swirling combustion. However, most low-nitrogen combustion technologies have high cost, complex structure or low-nitrogen combustion. Therefore, a gas device with high combustion efficiency, simple structure and good low-nitrogen combustion effect needs to be developed urgently

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