CN209726204U - Gas burner - Google Patents

Abstract

The utility model designs a kind of gas burner, and including nozzle and the air supply duct connecting with nozzle, air supply duct includes interior air pipeline, pulverized coal channel, interior gas piping, outer gas piping and outer air pipeline from inside to outside；Central axis, interior wind axis, interior gas axis, outer gas axis, outer wind axis and outer shaft is arranged in nozzle from inside to outside；It is swirl air duct between central axis and interior wind axis, be between the first coal gas air duct, outer gas axis and outer wind axis between coal dust air duct, interior gas axis and outer gas axis between interior wind axis and interior gas axis be between the second coal gas air duct, outer wind axis and outer shaft is axis stream air passage.Axis stream air passage adjusts flow between outer wind axis and outer shaft, it is only necessary to which exogenous wind spindle nose is processed into the conical surface, does not have to vehicle cone tank, easy to operate, at low cost.For using the burner of combustion gas, setting ignition channel is not needed.Using in the nozzle of ignition channel, oil gun does not need pressure piping in ignition channel, at low cost.

Description

Gas burner

Technical field

The utility model belongs to burner arts, and in particular to a kind of gas burner.

Background technique

The nozzle of existing coal burner includes jet, swirl air duct, coal dust air duct, axis stream wind mostly from inside to outside Road, and one or multiple tracks air duct is arranged in difference according to the actual situation, such as the burning in patent CN106885237A Device.The special coal dust of burner needs of coal dust firing, and the coke oven exhaust gas or converter waste gas in existing steel mill or cement plant Also need special processing.Need a kind of energy saving, protection environment, the fuel gas buring furnace using exhaust gas.

Coal dust firing requires fuel injection passage and passes through jet from Novel interior ignition.For with inflammable gases such as coal gas, combustion gas Burner, do not need after centainly combustion gas being waited from Novel interior ignition to spray in external ignition, fuel injection passage and oil spout Mouthful it is not necessary to.Existing burner all includes fuel injection passage and jet.

In addition, the adjusting method of the axis stream air passage Axial-Flow wind flow in existing burner tip is as follows: axis stream air passage by Space between outer wind axis and the outer shaft being arranged in outside outer wind axis is constituted.Outer wind axis outer wall is circumferentially evenly distributed with cone tank, cone The cross section of shape slot is gradually increased from head to tail portion along the axis of outer wind axis.In this way, between outer shaft and outer wind axis relatively before After move, the changes of section of air outlet, so as to adjust the flow of axis stream wind.This method needs to process cone tank, and cone tank adds Work complex steps, consuming time are more.Need it is a kind of be simple to manufacture, axis stream wind flow adjustment structure at low cost.

Summary of the invention

The utility model provides a kind of gas burner.

The purpose of this utility model is achieved in that gas burner, connect including nozzle and with nozzle Air supply duct, air supply duct include interior air pipeline, pulverized coal channel, interior gas piping, outer gas piping and outer space from inside to outside Feed channel；Central axis, interior wind axis, interior gas axis, outer gas axis, outer wind axis and outer shaft is arranged in nozzle from inside to outside；Central axis and interior wind It is swirl air duct between axis, is the first coal gas wind between coal dust air duct, interior gas axis and outer gas axis between interior wind axis and interior gas axis It is between the second coal gas air duct, outer wind axis and outer shaft between road, outer gas axis and outer wind axis is axis stream air passage；Wherein interior air pipeline It is connected with interior wind axis, pulverized coal channel and interior gas axis are connected, interior gas piping and outer gas axis are connected, outer gas piping and outer wind axis phase Even, outer air pipeline is connected with outer shaft.

Central tube, central axis inside set point fire channel, ignition channel and central tube are set inside interior air pipeline It is connected.

Telescopic joint is set on interior air pipeline, and wherein setting is flexible on any one for outer gas piping and outer air pipeline Section.

It further include the air hose being connected with compressed air source, air hose by the first branching air pipe and the second branching air Pipe is respectively communicated with inside interior air pipeline and inside outer air pipeline；It further include with the coal pipe being connected to inside pulverized coal channel, even Two gas entries of inside of gas pipeline and outer inside of gas pipeline in logical.

Outer wind axis front end is the exogenous wind spindle nose that outer surface is cone, and exogenous wind spindle nose point diameter is big, rear end diameter is small, outside Air-out groove is circumferentially set on wind axis head, and air-out groove is a part of cylindrical hole, the axis of air-out groove outer wind axis axis in parallel Line.

Eddy flow public attention is arranged in central axis front end, is arranged helicla flute on eddy flow public attention outer wall, helicla flute and interior wind axis inner wall it Between constitute spiral swirl air duct；As helicla flute extends to nozzle direction, the area of section of helicla flute is gradually reduced.

Exogenous wind spindle nose further includes one section of cylindrical outer surface, cylindrical outer surface and conical external surface be relatively large in diameter one End connects.

The beneficial effects of the utility model are: axis stream air passage adjusts flow between outer wind axis and outer shaft, it is only necessary to outer wind axis Head is processed into the conical surface, does not have to vehicle cone tank, easy to operate, at low cost.For using the burner of combustion gas, setting igniting is not needed Channel.Using in the nozzle of ignition channel, oil gun does not need pressure piping in ignition channel, at low cost.

Detailed description of the invention

Fig. 1 is burner overall schematic.

Fig. 2 is nozzle schematic diagram.

Fig. 3 is nozzle and air supply duct bound fraction cross-sectional view.

Fig. 4 is eddy flow public attention schematic diagram.

Fig. 5 is exogenous wind spindle nose schematic diagram.

Fig. 6 is outer shaft schematic diagram.

Fig. 7 is oil gun cross-sectional view.

Wherein, 2 it is nozzle, 20 be central axis, 201 be eddy flow public attention, 202 be helicla flute, 203 be center of orifices, 21 is Interior wind axis, 22 be interior gas axis, 23 be outer gas axis, 24 be outer wind axis, 25 be outer shaft, 26 be coal dust air duct, 27 be the first coal gas wind Road, 28 be the second coal gas air duct, 29 be axis stream air passage, 240 be exogenous wind spindle nose, 241 be air-out groove, 30 be swirl air duct, 31 be Outer tube, 32 be spout, 33 be pressure-air import, 34 be flowline, 35 be oil outlet, 36 be mixing chamber, 4 be telescopic joint, 5 be Intake stack, 50 be interior air pipeline, 51 be pulverized coal channel, 52 be interior gas piping, 53 be outer gas piping, 54 be outer air Pipeline, 55 be central tube, 6 be air hose, 7 be the first branching air pipe, 8 be the second branching air pipe.

Specific embodiment

As shown in figs. 1-7, a kind of gas burner nozzle, nozzle 2 include inside and outside twice air channel；Twice air channel Between at least one of combustion gas air duct is set.Central axis 20 is arranged in 2 centre of nozzle, and it is logical that igniting is not provided with inside central axis 20 Road.Lead to compressed air in air channel, for combustion-supporting.The fuel gas such as combustion gas air duct ventilating coal gas, for burning.Existing burning There is ignition channel in device.For mainly using the burner of the gases such as coal gas burning, do not need specially from burner internal point Fire can light a fire from outside, also can adequately burn.It is not provided with the burner of ignition channel, can be remake, can also be sealed Block up original ignition channel.In twice air channel positioned at outside can be axis stream air passage, positioned inside be whirlwind air duct Or vortex air duct.Burner tip can have unlikely twice air duct.Combustion gas air duct can be twice.

In specific embodiment, nozzle 2 be arranged from inside to outside central axis 20, interior wind axis 21, interior gas axis 22, outer gas axis 23, Outer wind axis 24 and outer shaft 25.It is swirl air duct 30 between central axis 20 and interior wind axis 21, is between interior wind axis 21 and interior gas axis 22 It is between the first coal gas air duct 27, outer gas axis 23 and outer wind axis 24 between coal dust air duct 26, interior gas axis 22 and outer gas axis 23 is It is axis stream air passage 29 between two coal gas air ducts 28, outer wind axis 24 and outer shaft 25.In first coal gas air duct 27, the second coal gas air duct 28 Coke-stove gas and coal gas of converter or any of them coal gas can be each led into.Coke-stove gas and coal gas of converter are all steel mills Or the exhaust gas in cement plant, it re-uses, saves resource.Lead to coal dust in coal dust channel 26, because coal gas is more, coal dust is few, It can be lighted without using ignition channel.20 outer surface of central axis is cylinder.Interior wind axis 21, interior gas axis 22, outer gas axis 23, exogenous wind The surfaces externally and internally of axis 24 is all cylindrical, is cyclic structure.The inner surface of outer shaft 25 is cylinder.Central axis 20 and interior wind axis 21 Inner and outer cylindrical surfaces between by relative movement device telescopic joint 4 relatively move.The interior appearance of outer wind axis 24 and outer shaft 25 It is relatively moved between face also by telescopic joint 4, so as to adjust the flow velocity of the compressed air of ejection, flow and rotation angle.

Eddy flow public attention 201 is arranged in 20 front end of central axis, and helicla flute 202, helicla flute 202 is arranged on 201 outer wall of eddy flow public attention Spiral swirl air duct 30 is constituted between interior 21 inner wall of wind axis.As helicla flute 202 extends to 2 export direction of nozzle, spiral shell The area of section of spin slot 202 is gradually reduced.The section of helicla flute 202 is semicircle, and the helical angle of helicla flute 202 is 45 degree of left sides It is right.Interior wind axis 21 is moved forward and backward, the area of adjustable 30 air outlet of swirl air duct, to adjust the flow of compressed air.

Air-out groove can be set on outer wind axis 24, air-out groove is cone, and 2 opening air-out groove diameter of nozzle is minimum. This structure is the conventional structure for adjusting axis stream wind outlet mouth size, and conical air-out groove does not allow easy processing, and manufacturing cost is high. It can be using a kind of method of new adjustment axis stream air passage air outlet flow.

Burner nozzle axis stream air passage structure, including the outer outer shaft 25 wind axis 24 and be set in outside outer wind axis 24, exogenous wind It is axis stream air passage 29 between axis 24 and outer shaft 25.Outer 24 front end of wind axis is the exogenous wind spindle nose 240 that outer surface is cone, outer wind axis First 240 point diameter is big, rear end diameter is small.Outer wind axis 24 and outer shaft 25 are all loop pipes.The front end of outer wind axis 24 is spindle stream One end that air duct 29 exports.Outer 24 rear end of wind axis is column, and outer diameter is less than the diameter of exogenous wind spindle nose 240.25 inner wall of outer shaft is It is cylindrical.It is axis stream air passage 29 between 24 outer wall of 25 inner wall of outer shaft and outer wind axis.The air outlet of axis stream wind be 25 end face of outer shaft and The gap of outer 24 conical wall of wind axis corresponding with 25 end face of outer shaft.It is opposite between outer shaft 25 and outer wind axis 24 to be moved forward and backward When, the air outlet of axis stream air passage 29 is gradually increased or gradually becomes smaller.As long as exogenous wind spindle nose 240 is processed into the conical surface, behaviour Make simply, it is at low cost.Axis stream air passage 29 is usually the outermost layer air duct of burner nozzle 2.Certainly, setting is in remaining place It can be with.

Air-out groove 241 is circumferentially set on exogenous wind spindle nose 240.Air-out groove 241 is a part of air outlet.Air-out groove 241 are uniformly arranged on the circumference of exogenous wind spindle nose 240.Air-out groove 241 is a part of cylindrical hole, the axis of air-out groove 241 Parallel outer 24 axis of wind axis.Air-out groove 241 is easy to process, vehicle go out wind axis head 240 the conical surface after, as long as along exogenous wind spindle nose The boundary of 240 punchings, hole and exogenous wind spindle nose 240 forms air-out groove 241.The conical bore used in the past is difficult to process, at high cost, consumption Time-consuming length.Present 241 processing cost of air-out groove is low.

Exogenous wind spindle nose 240 further includes one section of cylindrical outer surface, and cylindrical outer surface is relatively large in diameter with conical external surface One end connect.In this way, the air outlet of axis stream air passage 29 only includes air-out groove 241 under original state.Outer shaft 25 and outer wind axis 24 Between be moved forward and backward after, air outlet becomes larger, not only include air-out groove 241 further include between 24 outer wall of 25 inner wall of outer shaft and outer wind axis Gap.

25 inner wall front end of outer shaft is the cylindrical diameter that cylindrical and diameter is greater than 25 rear inner wall of outer shaft, two sections of cylinders It is connected between shape using conical external surface.If 25 inner diameter of outer shaft is self-consistent, when the flow of adjustment axis stream wind, 25 front end face of outer shaft needs to be moved to the circular conical surface corresponding position of exogenous wind spindle nose 241, and after wind is gone out from air outlet, top does not hinder Block material, it is easy to 25 circumference external diffusion of outer shaft.Setting in the utility model, after wind is gone out from air outlet, there are also outer shafts 25 Inner wall front end can make to draw close within 25 circumference of axis stream wind direction outer shaft, avoid dissipating as blocking.To gather flame.Wherein The cylindrical diameter of 25 rear inner wall of outer shaft and the cylindrical outer surface diameter of exogenous wind spindle nose 241 can be identical.Including above-mentioned axis The burner nozzle in stream air duct both is within the protection scope of the present invention, and wherein axis stream air passage is not necessarily burner nozzle Outermost air duct.

For gas burner, it can be not provided with ignition channel, ignition channel also can be set.In above-described embodiment, add Upper ignition channel just becomes the burner nozzle in six channels.Central axis 20, interior wind axis 21, interior gas axis is arranged in nozzle 2 from inside to outside 22, outer gas axis 23, outer wind axis 24 and outer shaft 25.It is swirl air duct 30, interior wind axis 21 and interior between central axis 20 and interior wind axis 21 It is the first coal gas air duct 27, outer gas axis 23 and exogenous wind between coal dust air duct 26, interior gas axis 22 and outer gas axis 23 between gas axis 22 It is between the second coal gas air duct 28, outer wind axis 24 and outer shaft 25 between axis 24 is axis stream air passage 29.

The difference is that；Ignition channel is set in central axis 20, and center of orifices 203 is arranged in central axis end.Its midpoint The central tube 55 of fiery channel connection burner, the interior setting igniter of central tube 55 and oil gun, oil gun include outer tube 31, outer tube 31 are arranged spout 32 close to the end of nozzle 2, and 31 tail portion of outer tube is arranged pressure-air import 33, flowline is arranged inside outer tube 31 34, oil outlet 35 is arranged close to the end of spout 32 in flowline 34, is mixing chamber 36 between oil outlet 35 and spout.

When it is implemented, oil enters mixing chamber 36 from oil outlet 35 and pressure-air mixes, fogging oil is sprayed from spray orifice 32, It is lighted with igniter.Oil gun originally, does not use compressed air, is pressurizeed by high-pressure pump to oil.It is passed directly into high pressure oil, high pressure Oil is lighted after spraying with igniter.Oil gun needs to bear high pressure, and high pressure resistant material is needed to make.And in the present embodiment, oil is not added High pressure makes mist of oil using compressed air, and the pipe fitting of low pressure can be used, reduce cost.Remaining structure with without ignition channel The technical solution of nozzle is identical.

Using the gas burner of said nozzle, specific structure is as follows: for the burner of not ignition channel, air supply tube Road 5 includes interior air pipeline 50, pulverized coal channel 51, interior gas piping 52, outer gas piping 53 and outer air pipeline from inside to outside 54.Wherein interior air pipeline 50 is connected with wind axis 21 in nozzle 2, pulverized coal channel 51 and interior gas axis 22 are connected, interior gas piping 52 It is connected with outer gas axis 23, outer gas piping 53 is connected with outer wind axis 24, outer air pipeline 54 is connected with outer shaft 25.Interior air pipeline Lead to compressed air in 50, lead to coal dust between interior air pipeline 50 and pulverized coal channel 51, pulverized coal channel 51 and interior gas piping 52 it Between lead to coal gas of converter, coke-stove gas, outer gas piping 53 and outer air hose are led between interior gas piping 52 and outer gas piping 53 Lead to compressed air between road 54.Coke-stove gas and coal gas of converter ventilation position can be interchanged, and can also all be passed through a kind of coal gas.

For the burner with ignition channel, 20 inside set point fire channel of central axis, air supply duct includes and igniting The central tube 55 that channel is connected leads to oil in central tube 55 and lights a fire.Specific ignition mechanism can be using the prior art Mode, can also be using the structure of oil gun in the utility model.

Telescopic joint 4 is set on interior air pipeline 50, and outer gas piping 53 and outer air pipeline 54 are wherein set on any one Set telescopic joint 4.It further include the air hose 6 being connected with compressed air source, air hose 6 by the first branching air pipe 7 and second point Branch air hose 8 is respectively communicated with inside interior 50 inside of air pipeline and outer air pipeline 54；It further include connecting with inside pulverized coal channel 51 Logical coal pipe 9, be connected in two gas entries inside 52 inside of gas piping and outer gas piping 53.

Drive interior air pipeline 50 and interior wind axis 21 mobile when it is implemented, the telescopic joint 4 of interior air pipeline 50 is flexible, from And adjust the flow of 30 air outlet of swirl air duct.Telescopic joint 4 is flexible on outer air pipeline 54 drives the mobile adjustment axis stream of outer shaft 25 The flow of the air outlet in air duct 29.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

Claims (7)

1. gas burner, including nozzle and the air supply duct being connect with nozzle, it is characterised in that: the air supply duct from it is interior to It outside include interior air pipeline, pulverized coal channel, interior gas piping, outer gas piping and outer air pipeline；The nozzle is from inside to outside Central axis, interior wind axis, interior gas axis, outer gas axis, outer wind axis and outer shaft are set；It is swirl air duct between central axis and interior wind axis, it is interior Between coal dust air duct, interior gas axis and outer gas axis be between wind axis and interior gas axis the first coal gas air duct, outer gas axis and outer wind axis it Between be between the second coal gas air duct, outer wind axis and outer shaft be axis stream air passage；Wherein interior air pipeline be connected with interior wind axis, coal pipe Road is connected with interior gas axis, interior gas piping is connected with outer gas axis, outer gas piping is connected with outer wind axis, outer air pipeline and outer shaft It is connected.

2. gas burner according to claim 1, it is characterised in that: central tube is set inside the interior air pipeline, Central axis inside set point fire channel, ignition channel are connected with central tube.

3. gas burner according to claim 1 or claim 2, it is characterised in that: telescopic joint is arranged on the interior air pipeline, outside Wherein telescopic joint is arranged on any one in gas piping and outer air pipeline.

4. gas burner according to claim 3, it is characterised in that: further include the air hose being connected with compressed air source, Air hose is respectively communicated with inside interior air pipeline and in outer air pipeline by the first branching air pipe and the second branching air pipe Portion；Further include with the coal pipe being connected to inside pulverized coal channel, in connection inside of gas pipeline and outer inside of gas pipeline two A gas entry.

5. gas burner according to claim 3, it is characterised in that: it is conical that the outer wind axis front end, which is outer surface, Exogenous wind spindle nose, exogenous wind spindle nose point diameter is big, rear end diameter is small, air-out groove is circumferentially arranged on exogenous wind spindle nose, air-out groove is A part of cylindrical hole, the axis of air-out groove outer wind axis axis in parallel.

6. gas burner according to claim 3, it is characterised in that: eddy flow public attention, eddy flow is arranged in the central axis front end Helicla flute is set on public attention outer wall, constitutes spiral swirl air duct between helicla flute and interior wind axis inner wall；With helicla flute to Nozzle direction extends, and the area of section of helicla flute is gradually reduced.

7. gas burner according to claim 5, it is characterised in that: the exogenous wind spindle nose further includes one section of cylindrical outer surface Face, cylindrical outer surface connect with one end that conical external surface is relatively large in diameter.