CN2385221Y

CN2385221Y - Gas burner

Info

Publication number: CN2385221Y
Application number: CN 99225086
Authority: CN
Inventors: 孙荣川
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-13
Filing date: 1999-09-13
Publication date: 2000-06-28
Anticipated expiration: 2009-09-13

Abstract

The utility model relates to a gas burner which is used for heating on an industrial furnace, comprising a wind sleeve shell with an air inlet. Both ends of the wind sleeve shell are respectively connected with a gas back seat and a burner spraying nozzle, and the interior of the wind sleeve shell is provided with a mixing drum, wherein, the opening end of which is connected with the inner diameter of the burner spraying nozzle and the sealing end of which is provided with a gas conduit and is communicated with an air supplying opening on a gas rear seat. Wind jet holes are arranged on the circumferential walls of the sealing end and the rear part of the mixing drum and between the outer walls of the opening end of the mixing drum. The utility model can carry out the gradual mixing, the dispersal mixing and uniform mixing to the air and the gas.

Description

A kind of coal gas burner

The utility model relates to the employed a kind of high heating value gas burner of heating on a kind of burner, particularly industrial furnace.

At present, employed high heating value gas burner on the industrial furnace, generally comprise an air supply chamber that has air intake and fuel gas inlet, this air and combustion gas be mixed combustion simultaneously in air supply chamber, and the shape by the burner block spout that socket-connects with the burner nozzle on the air supply chamber realizes parts updraft in the stove or flat flame heating then.The shortcoming of this kind coal gas burner is: the air and the combustion gas that enter in the air supply chamber can not all mix well, incomplete combustion, owing to concentrate on place mixed combustion, the noise that produces when then making burning is big again, and burned flame is also concentrated, O in the flame high-temperature region ₂, N ₂The content height, NQ _xGrowing amount is quite high, so not only efficiency of combustion is low for coal gas burner in the past, and flame instability, the burner capacity adjustment is than little, and combustion noise is big and NQ _xGeneration is many, is harmful to PE.

The purpose of this utility model provides a kind of sufficient combustion, a kind of coal gas burner of flame stabilization, minimizing public hazards.

The utility model is achieved in that a kind of coal gas burner, comprise a wind cover shell that has air intake, the two ends of described wind cover shell are connected with a coal gas back seat and a burner nozzle that has air supply opening respectively, it is characterized in that: be provided with a mixing drum in the wind cover shell, the open end of this mixing drum links to each other with the internal diameter of burner nozzle, blind end is inserted with gas-pipe line, and communicate with air supply opening on the coal gas back seat, it is conical that the front end face of the gas-jet on the described gas-pipe line is, be evenly equipped with gas jet orifice on this taper seat He on the sidewall, blind end on the described mixing drum and near being evenly equipped with primary air jet hole and secondary wind jet orifice on the circumferential wall of open end, the periphery wall that described burner nozzle inner walls links to each other with location support claw on the mixing drum is provided with circumferential weld shape tertiary air jet orifice.The area ratio of described primary air jet hole, secondary wind jet orifice, tertiary air jet orifice is 3: 4: 4 or 3: 5: 3.Described primary air jet hole and tertiary air jet orifice are straight hole or spirality.Described secondary wind jet orifice is straight hole or tangent line shape.

The utility model mainly is to have increased a mixing drum in wind cover shell, be provided with a gas-jet in the mixing drum, this gas-jet is communicated with air supply opening on the coal gas back seat by the gas-pipe line that is connected as a single entity, blind end on the described mixing drum and close our beginning circumferential wall are provided with primary air jet hole and secondary wind jet orifice, when the air supply opening of combustion gas from the coal gas back seat flows to, by the gas-jet on the gas-pipe line at twice different directions organize stream more and strand be injected in the mixing drum, this moment, air was by the primary air jet hole offered on the mixing drum blind end with near secondary wind jet orifice spray combustion in mixing drum of offering in our the beginning portion of mixing drum, when the mixed flow ejection mixing drum of burning enters the burner nozzle, air infeeds the tertiary air jet from mixing drum and outer partition circumferential weld between the burner nozzle again and has unburnt combustion gas mixing stream with the mixing drum ejection and burn while mixing, can spray the needs of shape like this according to flame, on the burner nozzle, connect straight line expansion shape, the burner block that shrinks shape or toroidal gets final product.

The utility model compared with prior art has following advantage: the air that enters in the coal gas burner can progressively disperse, mixes equably and realize complete efficient burning reaction to combustion gas, the utility model can make it to form suitable flame profile according to the requirement of the type of furnace and heating process: updraft, flat flame, high speed flame, and flame stabilization, noise are little, nitrogen oxide generates less, reduce public hazards.

Drawing is described as follows:

Fig. 1 is the sectional structure schematic diagram of the utility model example 1.

Fig. 2 is the utility model left side TV structure schematic diagram.

Fig. 3 is the mixing drum sectional structure schematic diagram of the utility model example 2.

Fig. 4 is the A-A sectional structure schematic diagram of Fig. 3.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Referring to Fig. 1, the utility model comprises a wind cover shell 3 that has air intake 4, the two ends of this wind cover shell 3 are connected with a coal gas back seat 6 and a burner nozzle 2 that has air supply opening 5, peephole 7 respectively by screw thread, securing member and sealing gasket, but the difform burner block 1 of socket on this burner nozzle 2.Be provided with mixing drum 13 in the described wind cover shell 3, the blind end of mixing drum 13 is inserted with gas-pipe line 8 and communicates with air supply opening 5 on the coal gas back seat 6, it is conical that the front end face of the gas-jet 11 on the gas-pipe line 8 in the described insertion mixing drum 13 is, be evenly equipped with

gas jet orifice

12,10 on this taper seat He on the catheter wall, be evenly equipped with primary air jet hole 9 and secondary wind jet orifice 14 on the blind end of described mixing drum 13 and the close circumferential wall of our beginning portion.When the air and the combustion gas of burning enter in the coal gas burner by air intake 4 and air supply opening 5 respectively, combustion gas just by on the gas-jet 11 radially with taper seat on

gas jet orifice

10,12 in mixing drum 13, spray, this moment, air was just from the end of mixing drum, that is to say that uniform secondary wind jet orifice 14 sprays to mixing drum 13 in and the mixed mutually mixing drum internal combustion that is incorporated in of combustion gas on primary air jet hole 9 uniform around the gas-jet 11 and the mixing drum back end circumference wall.Referring to Fig. 2, as can be seen from the figure, we of described mixing drum 13 is provided with the location support claw 16 that extends to radially the beginning, this location support claw 16 has formed discontinuous circumferential weld shape tertiary air jet orifice 15 with the inwall of burner nozzle 2, and described air is from the mixed flow continuation mixed combustion of tertiary air jet orifice 15 ejections with mixing drum 13 ejections.Referring to Fig. 3, Fig. 3 is a flat flame mouth mixing drum cutaway view of the present utility model.The rear end of this mixing drum 13 is connected with a gas-jet 11, and described combustion air is that the multithread thigh of three equidirectional rotations of branch mixes mutually with the combustion gas of gas-jet 11 ejections.The gas-flow thigh that primary air jet hole 9 is located at the radially ejection on mixing drum 13 ends and the gas-jet 11 intersects and mixes, and then mixes mutually with gas-flow thigh that gas jet orifice 12 on the taper seat sprays.Secondary wind jet orifice 14 is located at mixing drum 13 latter half ofly tangentially sprays in mixing drum 13 and mixes with the combustion gas of not combustion and the flame gas that fired and burn.Tertiary air jet orifice 15 is located at the outer wall gap of mixing drum 13 and burner nozzle, this tertiary air rotating flow thigh continues diffusion mixed combustion with the combustion gas of not combustion and the flame gas that has fired, and the area ratio of primary air jet hole 9, secondary wind jet orifice 14, tertiary air jet orifice 15 is 3: 4: 4 or 3: 5: 3.Referring to Fig. 4, coal gas burner of the present utility model is as long as the shape of the primary air jet hole 9 on the change mixing drum 13, secondary wind jet orifice 14, tertiary air jet orifice 15 can realize updraft and flat flame heating, and the flame of updraft and flat flame forms main by the shape of one, two, three wind jet orifice on the mixing drum 13 and the shape and structure of direction and burner block outlet.When one, two, three wind jet orifice all was axial and radial alignment air intake, when the spout on the burner block was straight shape expansion or contraction shape, coal gas burner was updraft.When one, two, three wind jet orifice was tangential one-tenth hand of spiral air intake, when institute joined the burner block outlet for toroidal, then coal gas burner was a flat flame.During flat flame, the eddy flow direction of primary air jet hole 9 and tertiary air jet orifice 15 is consistent, can make the combustion gas of gas-jet ejection in mixing drum, rotate mixing like this, add that secondary wind jet orifice 14 is rotary spray with tangential direction to mixing drum 13, mix again one be toroidal burner block, this moment flame just from horn mouth to diffusion heating everywhere.

Claims

1, a kind of coal gas burner, comprise a wind cover shell (3) that has air intake (4), the two ends of described wind cover shell (3) are connected with a coal gas back seat (6) and a burner nozzle (2) that has air supply opening (5) respectively, it is characterized in that: be provided with a mixing drum (13) in the wind cover shell (3), the open end of this mixing drum (13) links to each other with the internal diameter of burner nozzle (2), blind end is inserted with gas-pipe line (8), and communicate with air supply opening (5) on the coal gas back seat (6), it is conical that the front end face of the gas-jet (11) on the described gas-pipe line (8) is, be evenly equipped with gas jet orifice (12 on this taper seat He on the sidewall, 10), blind end on the described mixing drum (13) and near being evenly equipped with primary air jet hole (9) and secondary wind jet orifice (14) on the circumferential wall of open end, the periphery wall that described burner nozzle (2) inwall links to each other with location support claw (16) on the mixing drum (13) is provided with circumferential weld shape tertiary air jet orifice (15).

2, coal gas burner according to claim 1 is characterized in that: the area ratio of described primary air jet hole (9), secondary wind jet orifice (14), tertiary air jet orifice (15) is 3: 4: 4 or 3: 5: 3.

3, coal gas burner according to claim 1 and 2 is characterized in that; Described primary air jet hole (9) and tertiary air jet orifice (15) are straight hole or spirality.

4, coal gas burner according to claim 1 and 2 is characterized in that: described secondary wind jet orifice (14) is straight hole or tangent line shape.