CN206439826U - It is pre-mixed fletcher radial burner - Google Patents

Abstract

One kind premixing fletcher radial burner, including main air intake group, mixing body, burning shower nozzle and secondary air register group；The mixing body is a hollow body, and the air inlet of body one end combines once air door group, and the other end then links burning shower nozzle；The main air intake group is made up of fixed seat, air door cover plate, fuel nozzle；Fuel nozzle is fixed on the air inlet front end of mixing body by fixed seat；Air door cover plate is movably arranged on fuel nozzle, and the gap of air door cover plate and air inlet is changed through air door cover plate is rotated；The secondary air register group, is made up of bellows casing and the movable gate group pulled open, to aid in supplementing air inflow.Fuel and air burn into flame mixing after body is sufficiently mixed in advance by burning nozzle end, and furnace wall is uniformly spread in by palisade burner.

Description

It is pre-mixed fletcher radial burner

Technical field

The utility model is related to a kind of burner structure, and referring in particular to one kind has at least one set of air door, can improve burning effect The burner structure of rate.

Background technology

Burner（Burner）It is fuel and air is sprayed the device general designation for carrying out mixed combustion with a rational proportion.Through Boiler and industrial furnace of combusting coal fines, liquid fuel and gaseous fuel etc. are commonly applied to, its simple principle heated is to burn Fuel is directly sent to combustion chamber and burnt by device, and the heat produced using fuel combustion reaches heat effect.

In burner operation, whether the efficiency of heating burns completely depending on fuel, and whether fuel burns completely Key then depend on whether fuel mixes fully with air, the especially fuel supplying mode of injecting type, in the continuous active of fuel In the case of feeding, in order to avoid cost is wasted caused by fuel combustion not exclusively, whether the supply of air seems special enough It is important.

In addition, the shape of flame is also related to the efficiency of overall heating, and the flame of common burner is generally elongated Straight fire, straight fire heated perimeter is excessively concentrated, and is relatively required that boiler has longer chamber design, is caused the overall dimensions of boiler Than larger；In view of this, the mixed effect of fuel and air how is lifted, fuel can fully be burnt under enough oxygen, subtracts The formation of low boiler chimney soot, meanwhile, the size and dimension of burner flame how is adjusted, becoming related dealer must solve Problem.

Utility model content

The problem of to be set forth in solution encountered in actual use experience, the utility model, which provides one kind, can improve burning effect The premixing fletcher radial burner of rate.

The premixing fletcher radial burner that the utility model is provided, including main air intake group, mixing body and burning shower nozzle, The mixing body is a hollow body, and the air inlet of body one end combines once air door group, and the other end then links burning shower nozzle； The main air intake group is made up of fixed seat, air door cover plate, fuel nozzle；Fuel nozzle is fixed on mixing tube by fixed seat Air inlet front end set by body；Air door cover plate is movably arranged on fuel nozzle, and air door cover plate is changed through air door cover plate is rotated With the gap of air inlet；Palisade burner of the burning shower nozzle front end provided with coniform flame diffuser and more several radial openings； The burner further includes secondary air register group, and the secondary air register group includes bellows casing and be embedded in bellows casing movable to draw The gate group opened, is adjusted by the perforate size that gate group is pulled open, and changes the air capacity size passed through, to aid in supplementing air inlet Amount.

Through the implementation of the utility model aforementioned structure, fuel and air are sufficiently mixed mixing body in advance, to improve Efficiency of combustion, then in the bundles of flame of burning nozzle end burning, by equiangularly arranged palisade burner, forms radial equal The even flame for interspersing among furnace wall.

Brief description of the drawings

Fig. 1 is dimensional structure diagram of the present utility model.

Fig. 2 is another angle dimensional structure diagram of the utility model.

Fig. 3 is that the utility model implements view.

Label declaration：

10 main air intake groups；

11 fixed seats；

12 air door cover plates；

13 fuel nozzles；

20 mixing bodys；

21 air inlets；

30 burning shower nozzles；

31 flame diffusers；

32 palisade burners；

40 secondary air register groups；

41 bellows casings；

42 gate groups；

43 passages；

50 combustion furnaces.

Embodiment

To enable architectural feature of the present utility model, technological means, effect and other features to be further appreciated that, hereby with compared with Good embodiment simultaneously coordinates schema detailed description as follows.

Refer to shown in Fig. 1,2 and Fig. 3, be to describe the preferable implementation that the utility model is pre-mixed fletcher radial burner in figure Example, the utility model burner structure is mainly made up of main air intake group 10, mixing body 20 and burning shower nozzle 30；This is mixed Conjunction body 20 is a hollow body, and the air inlet 21 of body one end combines once air door group 10, and the other end then links burning spray First 30, the front end of burning shower nozzle 30 is provided with the flame diffuser 31 of coniform moulding, more makes the palisade of more several radial openings Burner 32；The utility model burner structure further includes secondary air register group 40, and burner is combined by the secondary air register group 40 On the body of combustion furnace 50.Fuel is natural in mixing body 20 to be pre-mixed with air, is finally burnt into palisade burner 32 The flame of even diffusion.

Referring again to shown in Fig. 1 and Fig. 2, foregoing main air intake group 10 is sprayed by fixed seat 11, air door cover plate 12 and fuel First 13 are constituted；Fuel nozzle 13 can the fuel such as external LNG, fuel oil, gas, be fixed on mixing body 20 by fixed seat 11 The front end of air inlet 21, during operation, fuel nozzle 13 sprays into fuel into air inlet 21；Air door cover plate 12 is movably arranged on fuel On shower nozzle 13, the gap of air door cover plate 12 and air inlet 21 can be changed through air door cover plate 12 is rotated, for adjusting entrance The air capacity of air inlet 21；Secondary air register group 40 is mainly can the relative gate group pulled open of activity by bellows casing 41 and two 42 are constituted, and are adjusted by the perforate size that gate group 42 is pulled open, thus it is possible to vary by the air capacity size of passage 43, as Main air intake group 10 is aided in, not enough air inflow is supplemented.

Sprayed referring again to mixing body 20 is described shown in Fig. 3, in figure with main air intake group 10, secondary air register group 40 and burning First 30 combination and structural relation；It can be seen that by schema, fuel is entered in mixing body 20 by air inlet 21, and air then leads to Cross air door cover plate 12 and enter to mix with the gap of air inlet 21 and be pre-mixed with fuel in body 20, then at the end of shower nozzle 30 of burning Burn bundles of flame, through the palisade burner 32 of angularly arranged radially, forms the radial flame for being dispersed evenly to furnace wall. In principle, based on the main gap of air door cover plate 12 to adjust main air intake group 10 of air input, not enough air capacity coordinates again Adjust secondary air register group 40 to supply, make burner of the present utility model can ensure that the supply of air capacity is filled in operation according to this Point.

Understand that the utility model has reached default purpose, can be utilized really by industry, really via above-described embodiment explanation Patent requirement is met, whence proposes patent application.But, structure, ratio, size, quantity depicted in embodiment institute accompanying drawings etc., Only coordinate the content disclosed in specification, be not limited to the utility model practical range, therefore the utility model is protected Scope is worked as to be defined depending on those as defined in claim.

Claims (1)

1. one kind premixing fletcher radial burner, including main air intake group, mixing body and burning shower nozzle, the mixing body is one Hollow body, the air inlet of body one end combines once air door group, and the other end then links burning shower nozzle；It is characterized in that：

The main air intake group is made up of fixed seat, air door cover plate, fuel nozzle；Fuel nozzle is fixed on mixed by fixed seat Close air inlet front end set by body；Air door cover plate is movably arranged on fuel nozzle, and air door is changed through air door cover plate is rotated The gap of cover plate and air inlet；Palisade fire of the burning shower nozzle front end provided with coniform flame diffuser and more several radial openings Mouthful；

The burner further includes secondary air register group, and the secondary air register group includes bellows casing and is embedded in bellows casing and can live The dynamic gate group pulled open.