CN2196247Y

CN2196247Y - Wall surface adsorption fluidic burner

Info

Publication number: CN2196247Y
Application number: CN 94215423
Authority: CN
Inventors: 黎军; 盛宏至; 田文栋; 吴承康
Original assignee: Institute of Mechanics of CAS
Current assignee: Institute of Mechanics of CAS
Priority date: 1994-07-04
Filing date: 1994-07-04
Publication date: 1995-05-03
Anticipated expiration: 2004-07-04

Abstract

The utility model relates to a burner belonging to the boiler and the grate. The burner adopt a curved wall surface (2) to adsorb fuel gases, and a fully attached wall curved jet is formed. The curved wall surface (2) is composed of a convex curve (3) and a concave curve (4). The fuel in the jet passes through a primary air channel (1), entrains the high temperature flue gases in the furnace chamber under the action of the curved wall surface (2), become dense in the high temperature flue gases, is rapidly heated and burns. The utility model has the advantages of high flame stability, no slag bonding, wide fuel adaptability, simple structure, zero wear of the components, and no need for high-speed jet.

Description

Wall surface adsorption fluidic burner

The utility model belongs to the burner of boiler, stove etc.

The burner that present similar technology adopted has: rotating jet high temperature recirculation zone type, Blunt wake high temperature recirculation zone type, coner firing once-through type etc.Above-described all kinds of burner, its shortcoming is: fuel and high temperature recirculation zone coupling are unreasonable, and resistance is big, and swirl vane is easy to wear, and fuel fire is slower, and the peak regulation scope is little, and the fuel scope of application is little or the like.

The present invention has utilized the attached wall of the jet of non-cavity, in hydrodynamics, there are two kinds of attached wall phenomenons of jet, a kind of is that jet separates the attached wall of cavity type jet of attached wall more earlier, and another kind is the complete adherent attached wall of non-NULL alveolitoid jet, and the utility model is exactly the attached wall of jet of non-NULL alveolitoid.

Goal of the invention of the present utility model is for overcoming the above-mentioned shortcoming of other burner, a kind of burner of wall adsorption jet being provided.

Fig. 1 is a principle assumption diagram.

Fig. 2 is the side view of Fig. 1.

Fig. 3 is the principle assumption diagram of attached wall up and down.

Fig. 4 is the side view of Fig. 3.

Fig. 5 is the principle assumption diagram of three-back-shaped attached wall or the attached wall of annular.

Fig. 6, Fig. 7 are the side view of Fig. 5.

Fig. 8 is the once principle assumption diagram of attached wall up and down of wind passage of center.

Fig. 9 is the side view of Fig. 8.

Figure 10 is the once principle assumption diagram of wind passage of the attached wall of Back Word type or the attached wall of annular center.

Figure 11, Figure 12 are Figure 10 side view.

Wherein, (1) is wind passage, (2) curved wall, (3) convex curves, (4) notching curve, (5) flex point, (6) wind passage, (7) crosswind mouth, (8) three-back-shaped wind passage, wind passage of (9) annular, (10) center primary air nozzle next time.

Fig. 1 is that the single attached wall of non-NULL alveolitoid of the present utility model is penetrated main burner, and it has two wind passages (1) and (6), constitutes with a curved wall (2) and a plane in the middle of two wind passages (1) and (6).Wherein curved wall (2) is divided into two sections, and one section is convex curves (3) and notching curve (4), and the tie point of two sections curves is flex point (5).Under the suction-operated of curved wall (2), jet flows along curved wall (2) from a wind passage (1) ejection, and converges in downstream and another jet from wind passage (6) ejection next time, jointly to the diffluence of burner hearth depths.The bending of jet is separated fuel particle (or drop) wherein under action of inertia, form the particle compact district in the high-temperature flue gas in the jet outside, causes the Fast Heating and the burning of fuel.Because of jet has strong souring to curved wall (2), can prevent the wall slagging scorification, again because of this device is to put in the burner hearth, strong jet is cooling wall effectively also.Curved wall (2) but the locality condition at shape based on fuel condition, demanded power output and use scene design neatly, make its curved wall (2) that suitable degree of crook be arranged.

The utility model can also be made the up and down structure of attached wall, the structure that provides as Fig. 3, just two curved walls (2) at a wind passage (1) and about do in the exit of wind passage (6) next time.A wind passage (1) can also be made a three-back-shaped wind passage (8) or a subchannel (9) of circular ring type with above principle, four curved walls (2) that inwardly shrink are made in the exit of a wind passage (8) of Back Word type.The rotating curved wall of inside contraction (2) is made in the exit of a wind passage (9) of annular.The said burner of structure, the attached wall construction of Back Word type or the attached wall construction of circular ring type of attached wall up and down can also be opened the wind passage in a center (10) in the centre of burner.

Embodiment one: the attached wall of annular center is the burner of wind passage once, as Figure 10,12, this burner has a wind passage of annular (9), the parallel wind passage in center (10) that has with a wind passage of annular (9) in the centre of burner is opened the exit of a wind passage (9) and is made the rotary bending wall (2) of inside contraction at annulus.Curved wall (2) also can be the curve (3) of epirelief.

Embodiment two: the burner of three-back-shaped attached wall construction, as Fig. 5,6, this burner has a three-back-shaped wind passage (8), makes four curved walls (2) that inwardly shrink in the exit of a three-back-shaped wind passage (8).

The curved wall of above-described burner (2) is visited in the burner hearth, again because of the effect of jet is arranged, so play to the position cooling purpose of visiting in the burner hearth.Both sides at the burner of single attached wall and two-way attached wall have increased crosswind mouth (7).

The utility model wall adsorption jet burner advantage is, can protect wall, not slagging scorification, little, the no wearing terrain of resistance, simple in structure, fuel type and load to adapt to wide advantage effectively.

This burner can be used for the main burner of station boiler.

Claims

1, a kind of wall adsorption jet burner is characterized in that, comprising a wind passage (1) and wind passage (6) next time, in a wind passage (1) exit one curved wall (2) is arranged.

By the described burner of claim 1, it is characterized in that 2, said curved wall (2) is to be made of convex curves (3) and another section notching curve (4), middle tie point is flex point (5).

3,, it is characterized in that, the burner of two curved walls (2) being arranged in a wind passage (1) and the exit of wind passage (6) next time by the described burner of claim 1.

4, by the described burner of claim 1, it is characterized in that a wind passage (1) is made a three-back-shaped wind passage (8), curved wall (2) is made four structures of inwardly shrinking in the exit of a wind passage (8).

5, by the described burner of claim 1, it is characterized in that a wind passage (1) is done a circular wind passage (9),, curved wall (2) is made the jatharapanvartanasana structure of inside contraction in the exit of a wind passage (9).

6, by claim 3,4,5 described burners, it is characterized in that, also can open the wind passage in a center (10) in the centre of burner.

7, by claim 1,3 described burners, it is characterized in that, increased crosswind mouth (7) in the both sides of burner.