CN2200118Y - Flame stabilizing device for burner - Google Patents

Abstract

The utility model discloses a flame stabilizing device for a flat flame burner, especially an improvement of the primary air supply structure of the flat flame burner. The flat flame burner comprises a burner shell and a burner tile, and a gas-jet tube and an air swirler are arranged inside the burner shell. A plate which is connected with the swirler and the gas-jet tube is provided with a tube 8 provided with a plurality of holes 9. With the structure, the service life of a primary air tube is prolonged, and the center of the burner is ensured to have stable fire source.

Description

Flame stabilizing device for burner

This case is dividing an application of " the steady fiery device of flat flame burner ", original application day 931109, application number 93243791.5.

The utility model belongs to coal gas burner, relates in particular to a kind of steady fiery device of combustion gas flat flame burner.

The flat flame device is a kind of burner that is widely used in the industry heating, and it can be installed on the various type of furnaces, both can be contained in furnace roof, also can be contained on the side wall, and the obvious temperature field of its energy-saving effect is even.The combustion gas low pressure flat flame burner that Chongqing Iron ﹠ Steel Design ﹠ Research Inst succeeds in developing in late nineteen seventies is used very extensively, and on-the-spot reflection is fine.This burner has been developed the flat flame burner of suitable multiple coal gas, plurality of specifications.According to the difference of used coal gas caloric value, the burner internal structure is also variant slightly.For example fire the flat flame burner of natural gas, employing be that natural gas does not rotate, just air rotation, air is supplied with and is divided wind and secondary wind.One time wind is used for igniting, makes the burner center have one to stablize burning things which may cause a fire disaster, plays igniting easily, and the temperature field acts on uniformly on the whole burner plane.Secondary wind is mainly used for burning.This burner time spent on high temperature furnace, owing to be subjected to the high temperature furnace wall, the radiation effect of furnace gas is easy to be burnt out with an airduct of common material system.According to reflection, the burner that has only used once, an airduct burnt out in two months.

The purpose of this utility model is the structure that changes an airduct, to prolong the service life of an airduct.And assurance has stable incendiary source and even temperature field.

For achieving the above object, the scheme that is adopted is: flat flame burner, it comprises burner shell and burner block, and gas-jet tube, air cyclone are housed in burner shell, on the plate that connects altogether with cyclone and gas-jet tube, the pipe 8 with a plurality of holes 9 is housed.Angle of cut γ=30～120 of the center line of the center line in hole 9 and pipe 8 °.Be surrounded by refractory material near pipe 8 free-ended outer surfaces.

Adopt the utility model can reach following effect:

Can prolong the service life of an airduct, guarantee the stable burning things which may cause a fire disaster at burner center, the uniformity to the flat flame burner temperature field is beneficial simultaneously.

The utility model is described in further detail below in conjunction with accompanying drawing.

Airduct structure chart of Fig. 1

The airduct of Fig. 2 band refractory material

In Fig. 1, steel pipe 1 joins with the pipe cap 2 that has porous, and this is a kind of situation of the prior art.

In Fig. 2, the pipe 8 with a plurality of holes 9 is housed on the plate that connects altogether with cyclone and gas-jet tube.Be surrounded by refractory material at pipe 8 near free-ended outer surface.Mix mutually with coal gas from the part air of cyclone, and have partially mixed thing 9 to enter pipe 8, near the free end of pipe 8, form stable incendiary source through the hole by the gas pipe ejection.Manage the refractory material 10 of 8 outer surfaces and can protect pipe 8 not burnt out, play the effect of block radiation heat again.

Claims (3)

1, a kind of steady fiery device of flat flame burner is equipped with a pipe (8) on the plate that connects altogether with cyclone and gas-jet tube, it is characterized in that: have a plurality of holes (9) on the pipe (8).

2, steady fiery device according to claim 1 is characterized in that: angle of cut α=30～120 of the center line of the center line of described hole (9) and pipe (8) °.

3, steady fiery device according to claim 1 is characterized in that: be surrounded by refractory material (10) at pipe (8) near free-ended outer surface.

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