Pre-mixed type anti-interference ignition gun for industrial burner

Abstract

The invention relates to a pre-mixed type anti-interference ignition gun for an industrial burner. The pre-mixed type anti-interference ignition gun comprises an outer casing pipe and a central pipe, wherein a basic function section provided with a combustion air inlet, a lengthened and distinguished pre-mixing function section and a windproof function section consisting of a conical combustion section and an annular windproof section are arranged on the outer casing pipe; and the central pipe comprises a tail end fuel gas inlet, a middle fuel gas channel cavity and a front end seal bottom, fuel gas spray holes are formed in the cavity wall, an ignition electrode with the straight front section and a flame detector provided with a probe are fixed on the outer surface, and a metal limit flame stabilizing plate is fixed at the top end. The gas fuel and the combustion air are mixed in advance in the pre-mixing function section cavity, the ignition electrode ignites mixed gas by aligning to the flam stabilizing plate, and produced ignition flame is protected by the windproof function section, so that the defects that the conventional ignition gun is low in ignition success rate, the ignition flame is easy to blow out and the burn-off rate of fuel gas is low are overcome effectively, the overall working stability of the ignition gun is improved, the requirements for environment protection and energy saving are met, the safe operation of an industrial boiler is guaranteed, and the pre-mixed type anti-interference ignition gun for the industrial burner has very high practicability.

Description

technical field [0001] The invention relates to the technical field of gas combustion and ignition, in particular to a premixed industrial burner which has the function of premixing combustion-supporting air and gas fuel, has windproof ability to the jetted ignition flame, and is beneficial to improve the success rate of ignition and work stability. Anti-jamming point gun. Background technique [0002] Burners are an important part of industrial boilers, and ignition guns are an important component of industrial burners. At present, the ignition guns in use mainly include two types: the type with combustion air and the type without combustion air. The common feature of these two types of ignition guns is that the front section of the ignition electrode is set in a curved shape, and both adopt the working method that the ignition electrode is aligned with the central tube to discharge and generate high-voltage sparks, and then ignite the gas. Therefore, the installation angl...

AI Technical Summary

Problems solved by technology

The common feature of these two types of ignition guns is that the front section of the ignition electrode is set in a curved shape, and both adopt the working method that the ignition electrode is aligned with the central tube to discharge and generate high-voltage sparks, and then ignite the gas. Therefore, the installation angle of the ignition gun is relatively high. If the installation angle deviation is large, or the angle deviation increases due to vibration and other reasons during operation, it is easy to cause high-voltage discharge because the ignition electrode is not aligned with the center tube, so the ignition flame cannot be generated, which will affect the success rate of ignition. In addition, these two types of ignition guns use the working method of directly igniting gas fuel, that is, the ignition operation is performed without pre-mixing the combustion air and gas fuel, which is not conducive to the full combustion of gas fuel, and the jet flame is longer , the ignition flame directly extends out of the front section of the outer casing, which is prone to be blown out by the wind and affects the working stability

Therefore, the existing ignition guns for industrial burners generally have disadvantages such as unreasonable structure, unscientific working methods, low gas burnout rate and poor working stability. less than ideal

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