Gas spray gun for glass melting furnace

Abstract

The invention belongs to the gas spray gun for glass melting kiln, which includes a fuel gas inlet pipe seat, an air distribution pipe seat with a regulating valve, an air distribution chamber with a conical valve stem and a valve stem seat, and a normally open spray hole group. Inner spray head with central spray hole, air intake chamber with damper, Venturi-type mixing injection pipe integrating initial mixing section, accelerated mixing section and diffusion mixing section, connecting pipe, and spray head. The invention can be used for melting area of ​​20 ~ 80m 2 When used in a glass melting furnace, the comprehensive energy-saving efficiency is 5-8% higher than that of the background technology, and the natural gas is saved by 2-5%. Therefore, it has advanced structural design, and can adjust the ratio and pressure of fuel gas and air according to the melting state, effectively controlling The oxidation and reduction atmosphere of the flame in the furnace and the conversion of the oxidation and reduction atmosphere, the spray gun has a wide range of adaptation to gas pressure, a long range, a large melting area, good stability during combustion, low comprehensive energy consumption, and a long service life of the gas spray gun long features.

Description

technical field [0001] The invention belongs to a gas spray gun for a glass melting kiln, in particular to a gas spray gun for a kiln using natural gas as fuel to melt glass liquid. The spray gun can also be used as a burner for other kilns using natural gas as fuel. Background technique [0002] The traditional gas spray gun for glass melting kiln, such as the patent No. ZL02276534, the patent document titled "A Gas Spray Gun for Kiln", discloses a fuel gas inlet pipe with an inner nozzle, and is provided with an air inlet pipe. The pre-mixing chamber of the air port, the primary acceleration mixing chamber, the secondary acceleration mixing chamber, the diffusion mixing chamber and the (spray gun) nozzle. The gas spray gun injects fuel gas and air through inner spray holes of different diameters to automatically premix, and then sprays into the kiln after accelerated mixing and diffusion mixing through 3-4 sections of equal diameter pipes with different diameters; although...

AI Technical Summary

Problems solved by technology

The gas spray gun injects fuel gas and air through inner spray holes of different diameters to automatically premix, and then sprays into the kiln after accelerated mixing and diffusion mixing through 3-4 sections of equal diameter pipes with different diameters; although the gas spray gun has The structure is relatively simple, but because the fuel gas inlet pipe is used to directly provide fuel gas through the nozzle at its end and mix with the inhaled air after entering the pre-mixing chamber, the amount of air in the mixed gas cannot be adjusted and controlled, so it cannot be controlled according to the furnace The internal combustion condition adjusts the ratio of the mixed gas, and it cannot effectively fine-tune and convert the oxidation and reduction atmosphere of the flame. In addition, the first and second acceleration mixing chambers are connected in steps, which has a large resistance to the gas fluid and the injection of the gas spray gun. The distance is limited; in addition, the gas spray gun is only suitable for high-pressure combustion with a pressure in front of the gun of 0.065-0.09Mpa. It cannot operate normally, not only greatly affected by the pressure of the gas source, but also only suitable for kilns with a melting area of ​​20 to 35 square meters

Therefore, the existence of gas spray guns for such glass melting furnaces can neither effectively adjust the ratio of fuel gas to air, nor fine-tune and switch the oxidation and reduction atmosphere of the flame according to the melting conditions in the furnace. Narrow adaptation range, poor combustion stability at low pressure, or even normal operation, small melting area, high energy consumption and other defects

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