Specific embodiment

The structural principle of the utility model and working principle are described in detail with reference to the accompanying drawing: such as the institute of Fig. 1~5 Show, a kind of natural gas high combustion rate burner of the utility model, including cylindric aid distributing pipe 1,1 radial communication blast pipe 2 of aid distributing pipe, air distribution The front opening of pipe 1 is fixedly connected with connecting plate 11, and 1 rear end of aid distributing pipe is fixedly connected with sealing plate 12, and the sealing plate 12 is solid Surely it is equipped with horizontal natural gas tube 3, the front opening of natural gas tube 3 extends to connecting plate 11, the front opening of natural gas tube 3 Inner edge fixing sleeve is equipped with round jet plate 4, and the jet plate 4 is equipped with multiple spurt holes 41, the front opening of natural gas tube 3 with The cylindric mixing tube 5 of both ends open is fixedly connected, and the side wall of mixing tube 5 is successively arranged radially-arranged first premix hole 51, Second premix hole 52 and third premix hole 53, and the circular aerofoil 6 that 5 front fixing sleeve of mixing tube is equipped with is successively arranged on aerofoil 6 The cylindric fan housing 7 of the first air holes 61, the second air holes 62, third air holes 63 of circle distribution, 6 outer rim of aerofoil and both ends open is solid The side wall of fixed connection, fan housing 7 is equipped with multiple acceleration holes 71.

Wind regulating device is equipped in blast pipe 2, wind regulating device includes wind deflector 21, wind deflector 21 and blast pipe 2 Side wall rotation connection, by the rotation of wind deflector 21, the supply amount of adjustable combustion air.

Third premixes the setting of hole 53 in 7 inside of fan housing, and third air holes 63 is to premix the inclined hole in 53 direction of hole to third.It helps Flue gas has an injection in the diagonal when flowing through third air holes 63 under negative pressure state in combustion air and kiln, make natural gas with it is combustion-supporting Flue gas is more fully mixed in air and kiln.

Mixing tube 5 and natural gas tube 3 are isometrical.

Fan housing 7, aerofoil 6, mixing tube 5, jet plate 4 and natural gas tube 3 are coaxial with aid distributing pipe 1.

First air holes 61, the second air holes 62, third air holes 63 are respectively arranged with multiple holes and are circularly and evenly distributed in wind On plate 6.

First premix hole 51, second premixes hole 52, third premix hole 53 and is evenly distributed on the side wall of mixing tube 5.

Connecting plate 11, sealing plate 12 are axially vertical with aid distributing pipe 1.

It is equipped with igniter 8 at the front opening of aid distributing pipe 1, lights for natural gas and combustion air to be mixed.

Utility model works process is as follows:

Natural gas flows through path are as follows: natural gas enters in natural gas tube 3 from 31 high speed of Imported gas --- natural gas The inner cavity that the spurt hole 41--- on jet plate 4 enters mixing tube 5 --- fan housing cavity --- is flowed through to spray from the front opening of fan housing Out.

In the high speed course of injection of natural gas, natural gas spouting velocity is fast, makes around to form negative pressure, in mixing tube 5 and wind In the cavity of cover 7, path that natural gas is mixed with flue gas in combustion air and kiln are as follows: the first of mixing tube 5 premixes hole 51 and the The combustion air that flue gas in a large amount of kilns is drawn into mixing tube 5, while be sent into through blast pipe 2 by two premix holes 52 is through aid distributing pipe 1 Inner cavity enter aid distributing pipe 1 front opening and from first premix hole 51 and second premix hole 52 enter 5 inner cavity of mixing tube ---- Natural gas of the flue gas premixing --- -- after premixing sprays forward to wind in natural gas and combustion air and kiln in mixing tube 5 In the cavity of cover 7 --- flue gas is under negative pressure state from the first air holes 61, the second air holes on aerofoil 6 in-combustion air and kiln 62, the acceleration hole 71 on the side wall of third air holes 63 and fan housing 7 is inhaled into the cavity of fan housing 7, natural gas and combustion-supporting sky Flue gas is further sufficiently mixed in the cavity of fan housing 7 in gas and kiln, wherein in a part of combustion air and kiln flue gas also from Third premix hole 53 is inhaled at 5 front opening of mixing tube to be mixed with natural gas.

The utility model makes natural gas with flue gas in combustion air and kiln in aid distributing pipe 5 by multistage air intake passage setting It is thoroughly mixed in the cavity of interior and fan housing 7, extends viscous flow time of the flue gas in kiln, to improve to spreading The thermal efficiency；Flue gas is thoroughly mixed with natural gas in kiln, also makes flue-gas temperature in fuel gas temperature and kiln close, improves temperature in kiln The uniformity of field is spent, reduces direct thermal shock of the high-temperature fuel gas to heated object, while also avoiding the generation of high temperature modification NOx, Reduce the pollution to atmosphere.

Certainly, the utility model can also have other various embodiments, without departing substantially from the spirit of the present invention and its essence In the case of, those skilled in the art work as can make various corresponding changes and modifications, but these according to the utility model Corresponding changes and modifications all should belong to the protection scope of the utility model the attached claims.