Inner mixing type two-stage atomized oil gun

Abstract

An internal-mixing secondary atomized oil gun comprises sprinklers, an oil-steam mixing chamber, a gun body and a joint, which are connected with each other in sequence. The internal-mixing secondary atomized oil gun is characterized in that an annular adjusting ring and a gun core are arranged in the cavity of the gun body; a steam slit and an oil slit are formed like an annular Venturi tube; and the end section of the gun core is fixedly connected with a swirler through a fixing device. The speed of oil is increased in the oil slit, and simultaneously the oil is disturbed and torn drastically by asymmetrical toothed grooves formed on the inner surfaces on both sides of the oil slit. At the exit of the oil slit, the oil is further atomized by violent impact of high-speed and high-temperature steam flow from the steam slit exit; and the oil mist is further crushed, mixed and fully atomized through the swirler arranged on the end section of the gun core, thus achieving uniform oil amount distribution in each sprinkler and good burning effect. Two ends of the annular adjusting ring are respectively connected with a steam adjusting gasket and an oil adjusting gasket to achieve adjustable oil / steam ratio and wide application range.

Description

Technical field [0001] The invention relates to a steam atomizing oil gun for industrial burners, in particular to an internal mixing secondary atomizing oil gun with a high adjustment ratio and suitable for burning inferior oil. Background technique [0002] Oil guns have been widely used as starting devices for coal-fired boilers and combustion devices for large-tonnage oil-fired boilers. The economy of heavy oil, especially low-quality residual oil is obviously greater than that of light oil, so it has been paid more attention. To make this type of oil burn fully and reliably, the premise is that it can be fully atomized, and the atomized particles should be as small as possible. At present, the oil guns used in industrial burners are divided into two categories: mechanical atomization and medium-assisted atomization. When burning heavy oil, the medium (such as air, steam, etc.) is often used to assist atomization. People use methods such as increasing fuel oil, steam ...

AI Technical Summary

Problems solved by technology

But the reality is that even if higher oil pressure and temperature are required, the atomization effect is still not ideal

Especially for high-power oil guns, the atomized particles are too large, the particle size is uneven, the oil particle distribution on the nozzle hole section is uneven or the oil particle distribution between each nozzle hole is uneven, the combustion is incomplete or excessive, Phenomena such as coking not only waste fuel energy, but also bring a lot of inconvenience to the operation of the burner and operators, and even pose potential safety hazards.

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