CN107036098A - A kind of multitube fuel gas mixing machine of monocline tubular type outlet - Google Patents
A kind of multitube fuel gas mixing machine of monocline tubular type outlet Download PDFInfo
- Publication number
- CN107036098A CN107036098A CN201710245724.6A CN201710245724A CN107036098A CN 107036098 A CN107036098 A CN 107036098A CN 201710245724 A CN201710245724 A CN 201710245724A CN 107036098 A CN107036098 A CN 107036098A
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- China
- Prior art keywords
- fuel
- peripheral
- center
- monocline
- multitube
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/007—Mixing tubes, air supply regulation
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
The invention provides a kind of multitube fuel gas mixing machine of monocline tubular type outlet, including housing, center fuel passage, peripheral fuel channel and annular air channel are radially coaxially arranged with the housing；The center fuel passage includes center fuel delivery pipe, and is connected to the central fuel nozzle that the center fuel conveys pipe end；The peripheral fuel channel includes peripheral fuel -supply pipe, and the peripheral fuel nozzle being connected on the peripheral fuel -supply pipe outer wall；The annular air channel includes peripheral air passage and central air passage, the peripheral air passage includes the uniform pipeline of some circumferences, inclined tube is respectively connected with the exit of each pipeline, the axis direction of the inclined tube and the axis direction of pipeline are into certain angle of inclination.In the present invention, the multitube premixed of peripheral channel and the application of end inclined tube make oil gas blending uniform, reduce disposal of pollutants.
Description
Technical field
The present invention relates to gas mixer, more particularly to a kind of multitube fuel gas mixing machine of monocline tubular type outlet.
Background technology
With the development of society, requirement more and more higher of the people for efficient utilization and the environmental protection of the energy.And conventional
Fossil fuel still occupies sizable ratio, and its carbon dioxide produced and pollutant emission cause very big environment pressure
Power, therefore people advocate energy-saving and emission-reduction, on the one hand the novel energy such as development solar energy, wind energy, reduces carbon emission；On the other hand it is right
Wish that the fuel utilization of fossil fuel can more efficiently, disposal of pollutants is lower.But this kind of new energy of solar energy, wind energy is because of it
Natural characteristic and at this stage technology restriction, are also unsuitable for large-scale promotion.Therefore fossil fuel is more efficiently utilized, makes it
The discharge of pollutant is lower, is method most viable at this stage.
One of thermal powerplant that boiler and industrial furnace burn as most important application, it using wide, including
In terms of heating, electric power, metallurgy, building, chemical industry and UTILIZATION OF VESIDUAL HEAT IN.China's boiler and industrial furnace total amount are huge, and now
The most energy consumption of equipment is more, efficiency is relatively low, and exhaust emission object amount is big, substantial amounts of coal and oil is not only consumed, while into air
Discharge a large amount of solid particulate matters and gas pollutant.
The gaseous fuels such as natural gas are a kind of efficient, high-quality, the gaseous fuel of cleaning, on boiler or other thermal hardwares
Face has good prospect.Premixed combustion can improve efficiency of combustion, effectively strengthen flame intensity.At the same time, premix combustion
Burning can also make burning at one than being carried out in larger equivalence ratio range.A kind of burning as disclosed in patent CN206001524U
Room radial direction two-stage swirl nozzle, it is possible to increase combustion stability.But, conventional gas plant, predominantly spreads combustion at present
Burn and incomplete premixed combustion, exist that local equivalent proportion is higher, temperature distributing disproportionation is so as to causing what emission increased
Shortcoming.
The content of the invention
For defect of the prior art, the present invention provides a kind of multitube fuel gas mixing machine of monocline tubular type outlet,
To improve efficiency of combustion, pollutant emission is reduced.
Edge in a kind of multitube fuel gas mixing machine for monocline tubular type outlet that the present invention is provided, including housing, the housing
It is radially coaxial to be provided with center fuel passage, peripheral fuel channel and annular air channel；During the center fuel passage includes
Heart fuel -supply pipe, and the central fuel nozzle that the center fuel conveys pipe end is connected to, and in the central fuel nozzle
End be provided with center fuel spray-hole；The peripheral fuel channel includes peripheral fuel -supply pipe, and is connected to the periphery
Some peripheral fuel nozzles circumferentially on fuel -supply pipe outer wall, and be provided with the end of the peripheral fuel nozzle
Peripheral fuel orifice；The annular air channel includes peripheral air passage and central air passage, and the peripheral air is led to
Road includes being provided with peripheral swirl-flow devices in the uniform pipeline of some circumferences, each pipeline, in the central air passage
It is provided with Swirl device；Inclined tube is respectively connected with the exit of each pipeline, the axis direction of the inclined tube and the axle of pipeline
Line direction is into certain angle of inclination, to cause the fuel and air mixture formation eddy flow sprayed by the inclined tube.
Preferably, each described inclined tube is in circumferential uniform form.
Preferably, projection of the axis of each inclined tube on the cross section of the housing intersects, and defines transversal with this
Regular polygon centered on the central point of face.
Preferably, the end of the center fuel passage is provided with premix chamber, will be sprayed from the center fuel spray-hole
The fuel gone out is mixed with the air through the Swirl device eddy flow.
Preferably, the premix chamber includes the first demarcation strip for being arranged on the central fuel nozzle radial outside, and sets
The second demarcation strip in the first demarcation strip radial outside is put, first demarcation strip and the second demarcation strip spray with center fuel
Mouth is coaxially arranged.
Preferably, it is provided with the Swirl between the inwall of first demarcation strip and the outer wall of central fuel nozzle
Device.
Preferably, the Swirl device is axial rotational flow device or radial vortex device.
Preferably, the position of the peripheral fuel orifice is radially towards inner side, radially towards outside, circumferentially towards downstream or several
Person combines.
Preferably, the current limliting area ratio of the central air passage and peripheral air passage is 1：5 to 1：10.
A kind of operation principle of the multitube fuel gas mixing machine for monocline tubular type outlet that the present invention is provided is as follows, center combustion
Material reaches central fuel nozzle by way of center fuel passage by center fuel delivery pipe, the center combustion on central fuel nozzle
Expect that spray-hole sprays；Peripheral fuel reaches peripheral fuel nozzle, by periphery by way of peripheral fuel channel by peripheral fuel -supply pipe
Fuel orifice sprays；Air enters annular air channel, is partly into peripheral air passage, and remaining is logical into center air
Road；Air into central air passage is after Swirl device eddy flow, together with the fuel that center fuel spray-hole sprays
Ignition is carried out into downstream；The fuel sprayed into the air of peripheral air passage with peripheral fuel orifice, through pipeline
Interior peripheral swirl-flow devices are strengthened after blending, are sprayed by the inclined tube of pipe end, into fired downstream.
The present invention has the advantages that：
(1) peripheral swirl-flow devices are capable of the eddy flow mixing of enhanced fuel and air, and passing through the premix of fuel and air reduces
Discharge；Peripheral air, can be divided into many parts by the multitube premixed of peripheral channel, be carried out respectively and combustion in each pipeline
The premix of material, may be such that fuel and air are blended more uniform, further reduces disposal of pollutants；
(2) peripheral swirl-flow devices cause the contact area increase of the gas in mixing machine, make mixing rapider, reduce
Detonation trend, has steady flame effect, reduces combustion oscillation；The exit of the pipeline of peripheral air passage is provided with inclined tube, can make
The fuel and air mixture that must be sprayed produces eddy flow, and center fuel passage can coordinate center by center fuel spray regime
Swirl-flow devices and premix chamber, make center and periphery just be decoupled from flowing, realize the burning of injection diffusion combustion+swirl flame
Pattern, reaches the effect of reliable ignition and maximum reduction discharge；
(3) peripheral swirl-flow devices and Swirl device radially divide two stage arrangement, it is ensured that while mixing effect, matching
The VELOCITY DISTRIBUTION of jet expansion.Ensure that nozzle exit velocity is reasonably distributed, fuel-air is blended uniformly by two-stage swirl-flow devices,
Rationally control combustion zone, maintains combustion chamber flow field structure, so as to ensure the stability and good discharge performance of burning；
(4) air velocity of peripheral air passage is limited with the area of peripheral air duct, it is ensured that outer circumferential side air velocity
Type is distributed, so that continual and steady burning, it is ensured that do not stop working during regulation whole combustion chamber；
(5) central fuel nozzle and peripheral fuel nozzle are individually adjusted, and coordinate the tune of each fuel injection hole site and size
It is whole, broader design space can be provided for nozzle, the need for meeting different fuel and air blending.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described.In all of the figs, similar element
Or part is general by similar reference mark.In accompanying drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is a kind of structural representation of the multitube fuel gas mixing machine of monocline tubular type outlet of the present invention；
Fig. 2 is Fig. 1 right view；
Fig. 3 is a kind of tomograph of the multitube fuel gas mixing machine of monocline tubular type outlet of the present invention.
Reference：
1- housings；2- center fuel passages；3- peripheries fuel channel；4- annular air channels；5- pipelines；6- peripheries eddy flow
Device；7- Swirl devices；8- inclined tubes；9- premix chambers；
21- center fuel delivery pipes；22- central fuel nozzles；31- peripheries fuel -supply pipe；32- peripheries fuel nozzle；
41- peripheral air passages；42- central air passages；The demarcation strips of 91- first；The demarcation strips of 92- second；
221- center fuel spray-holes；321- peripheries fuel orifice.
Embodiment
The embodiment of technical solution of the present invention is described in detail below in conjunction with accompanying drawing.Following examples are only used for
Clearly illustrate technical scheme, therefore be only used as example, and the protection model of the present invention can not be limited with this
Enclose.
As shown in Figure 1, Figure 2 and Figure 3, a kind of multitube fuel gas for monocline tubular type outlet that one embodiment of the invention is provided
Mixing machine, includes the housing 1 of tubulose, and center fuel passage 2, peripheral fuel channel 3 are coaxially arranged with the inner radial of housing 1
With annular air channel 4, wherein, peripheral fuel channel 3 is set in the periphery of center fuel passage 2, and center fuel passage 2 includes
The center fuel delivery pipe 21 arranged along casing center axis, and it is connected to the center fuel of the end of center fuel delivery pipe 21
Nozzle 22, and the end of the central fuel nozzle 22 is provided with center fuel spray-hole 221；Peripheral fuel channel 3 includes outer
Fuel -supply pipe 31, and 8 peripheral fuel nozzles 32 circumferentially being connected on the peripheral outer wall of fuel -supply pipe 31 are enclosed,
And the end of the peripheral fuel nozzle 32 is provided with peripheral fuel orifice 321；The annular air channel 4 includes periphery
Air duct 41 and central air passage 42, wherein, peripheral air passage 41 is uniform by being arranged on some circumferences inside housing 1
Pipeline 5 limit, peripheral swirl-flow devices 6 are provided with each pipeline 5, center is provided with the central air passage 42
Swirl-flow devices 7；Inclined tube 8 is respectively connected with the exit of each pipeline 5, the axis direction of the inclined tube 8 and the axis direction of pipeline 5
Into certain angle of inclination, and each described inclined tube 8 is in circumferential uniform form, with cause the fuel that is sprayed by the inclined tube 8 and
Air mixture formation eddy flow.
In the present embodiment, center fuel reaches center fuel spray by way of center fuel passage 2 by center fuel delivery pipe 21
Mouth 22, the center fuel spray-hole 221 on central fuel nozzle 22 sprays；Peripheral fuel is by way of peripheral fuel channel 3, by outer
Enclose fuel -supply pipe 31 and reach peripheral fuel nozzle 32, sprayed by peripheral fuel orifice 321；Air is entered by housing inlet end
Annular air channel 4, is partly into the peripheral air passage 41 that pipeline 5 is limited, and remaining enters central air passage 42；
Air into central air passage 42 is after the eddy flow of Swirl device 7, the fuel one sprayed with center fuel spray-hole 221
Rise and enter downstream progress ignition；The fuel sprayed into the air of peripheral air passage 41 with peripheral fuel orifice 321,
After strengthening blending through the peripheral swirl-flow devices 6 in pipeline 5, sprayed by the inclined tube 8 of the end of pipeline 5, into fired downstream.
Above-mentioned peripheral swirl-flow devices 6 are capable of the eddy flow mixing of enhanced fuel and air, and the premix for passing through fuel and air drops
Low emission；Peripheral air, can be divided into many parts by the multitube premixed of peripheral channel, be carried out respectively in each pipeline 5
With the premix of fuel, it may be such that fuel and air are blended more uniform, further reduce disposal of pollutants；In the outlet of pipeline 5
Place sets inclined tube 8, may be such that the fuel and air mixture of ejection produces eddy flow, so as to obtain good discharge performance.
Projection of the axis of each inclined tube 8 on the cross section of the housing 1 intersects, and defines with the cross-section center
Regular polygon centered on point, in practice, can also be according to the situation of fuel combustion, the reasonable angle of inclination of design inclined tube 8
And incline direction, so as to obtain preferably discharge performance.
Further, the end of above-mentioned center fuel passage 2 is provided with premix chamber 9, will be from center fuel orifice 221
The fuel of ejection is mixed with the air through the eddy flow of Swirl device 7, and enters point downstream fire burning, reaches the effect of reliable ignition
Really；The premix chamber exports indent relative to pipeline 5, and the premix chamber 9 includes the centrally disposed radial outside of fuel nozzle 22
First demarcation strip 91, and it is arranged on the second demarcation strip 92 of the radial outside of the first demarcation strip 91, the He of the first demarcation strip 91
Second demarcation strip 92 is coaxially arranged with central fuel nozzle 22, and first and second demarcation strip limits and forms the premix chamber
Area of space.
The Swirl dress is provided between the inwall of above-mentioned first demarcation strip 91 and the outer wall of central fuel nozzle 22
7 are put, the Swirl device 7 can be axial rotational flow or radial vortex, specific form can be vane type or beveling cellular type.
The position of above-mentioned peripheral fuel orifice 321 can be for radial inward side, radially towards outside, circumferentially towards downstream or several
Person combines, and it can rationally be designed according to actual conditions.
In addition, the current limliting area ratio of above-mentioned central air passage 42 and peripheral air passage 41 is chosen as 1：5 to 1：10.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in previous embodiment, or which part or all technical characteristic are equal
Replace；And these modifications or replacement, the essence of appropriate technical solution is departed from the model of technical scheme of the embodiment of the present invention
Enclose, it all should cover among the claim of the present invention and the scope of specification.
Claims (9)
1. a kind of multitube fuel gas mixing machine of monocline tubular type outlet, it is characterised in that：
Including housing, center fuel passage, peripheral fuel channel and annular air channel are radially coaxially arranged with the housing；
The center fuel passage includes center fuel delivery pipe, and is connected to the center fuel that the center fuel conveys pipe end
Nozzle, and the end of the central fuel nozzle is provided with center fuel spray-hole；
The peripheral fuel channel includes peripheral fuel -supply pipe, and some weeks being connected on the peripheral fuel -supply pipe outer wall
Peripheral fuel orifice is provided with to the peripheral fuel nozzle of arrangement, and in the end of the peripheral fuel nozzle；
The annular air channel includes peripheral air passage and central air passage, and the peripheral air passage includes some weeks
To uniform pipeline, peripheral swirl-flow devices are provided with each pipeline, center rotation is provided with the central air passage
Flow device；
Inclined tube is respectively connected with the exit of each pipeline, the axis direction of the inclined tube and the axis direction of pipeline are tilted into certain
Angle, to cause the fuel and air mixture formation eddy flow sprayed by the inclined tube.
2. a kind of multitube fuel gas mixing machine of monocline tubular type outlet according to claim 1, it is characterised in that：
Each described inclined tube is in circumferential uniform form.
3. a kind of multitube fuel gas mixing machine of monocline tubular type outlet according to claim 2, it is characterised in that：
Projection of the axis of each inclined tube on the cross section of the housing intersects, and defines using the cross-section center point in
The regular polygon of the heart.
4. a kind of multitube fuel gas mixing machine of monocline tubular type outlet according to claim 3, it is characterised in that：
The end of the center fuel passage is provided with premix chamber, the fuel and warp that will be sprayed from the center fuel spray-hole
The air mixing of the Swirl device eddy flow.
5. a kind of multitube fuel gas mixing machine of monocline tubular type outlet according to claim 4, it is characterised in that：
The premix chamber includes the first demarcation strip for being arranged on the central fuel nozzle radial outside, and is arranged on this first point
Second demarcation strip of dividing plate radial outside, first demarcation strip and the second demarcation strip are coaxially arranged with central fuel nozzle.
6. a kind of multitube fuel gas mixing machine of monocline tubular type outlet according to claim 5, it is characterised in that：
The Swirl device is provided between the inwall of first demarcation strip and the outer wall of central fuel nozzle.
7. a kind of multitube fuel gas mixing machine of monocline tubular type outlet according to claim 6, it is characterised in that：
The Swirl device is axial rotational flow device or radial vortex device.
8. a kind of multitube fuel gas mixing machine of monocline tubular type outlet according to claim 1, it is characterised in that：
The position of the peripheral fuel orifice is to be combined radially towards inner side, radially towards outside, circumferentially towards downstream or a few persons.
9. a kind of multitube fuel gas mixing machine of monocline tubular type outlet according to claim 1, it is characterised in that：
The current limliting area ratio of the central air passage and peripheral air passage is 1：5 to 1:10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710245724.6A CN107036098B (en) | 2017-04-14 | 2017-04-14 | A kind of multitube fuel gas mixing machine of monocline tubular type outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710245724.6A CN107036098B (en) | 2017-04-14 | 2017-04-14 | A kind of multitube fuel gas mixing machine of monocline tubular type outlet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107036098A true CN107036098A (en) | 2017-08-11 |
| CN107036098B CN107036098B (en) | 2019-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710245724.6A Expired - Fee Related CN107036098B (en) | 2017-04-14 | 2017-04-14 | A kind of multitube fuel gas mixing machine of monocline tubular type outlet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730976A (en) * | 2018-05-18 | 2018-11-02 | 浙江炬烁热能设备制造有限公司 | Premix the super low NO of open type |
| CN115451431A (en) * | 2022-09-22 | 2022-12-09 | 中国联合重型燃气轮机技术有限公司 | Fuel nozzle premixing system for combustion chamber of gas turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203703982U (en) * | 2014-02-12 | 2014-07-09 | 重庆紫光新科化工开发有限公司 | Combustor and combustion furnace |
| CN104136851A (en) * | 2012-02-21 | 2014-11-05 | 通用电气公司 | A combustor nozzle and method of supplying fuel to a combustor |
| CN203940428U (en) * | 2014-06-19 | 2014-11-12 | 广东正鹏生物质能源科技有限公司 | A kind of Problem of Biomass Fuel Gas Combustion installment for Industrial Boiler |
| CN206001524U (en) * | 2016-08-30 | 2017-03-08 | 林宇震 | A kind of combustor radial direction two-stage swirl nozzle |
-
2017
- 2017-04-14 CN CN201710245724.6A patent/CN107036098B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104136851A (en) * | 2012-02-21 | 2014-11-05 | 通用电气公司 | A combustor nozzle and method of supplying fuel to a combustor |
| CN203703982U (en) * | 2014-02-12 | 2014-07-09 | 重庆紫光新科化工开发有限公司 | Combustor and combustion furnace |
| CN203940428U (en) * | 2014-06-19 | 2014-11-12 | 广东正鹏生物质能源科技有限公司 | A kind of Problem of Biomass Fuel Gas Combustion installment for Industrial Boiler |
| CN206001524U (en) * | 2016-08-30 | 2017-03-08 | 林宇震 | A kind of combustor radial direction two-stage swirl nozzle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730976A (en) * | 2018-05-18 | 2018-11-02 | 浙江炬烁热能设备制造有限公司 | Premix the super low NO of open type |
| CN108730976B (en) * | 2018-05-18 | 2023-12-05 | 浙江炬烁热能设备制造有限公司 | Premixed open type ultralow nitrogen burner |
| CN115451431A (en) * | 2022-09-22 | 2022-12-09 | 中国联合重型燃气轮机技术有限公司 | Fuel nozzle premixing system for combustion chamber of gas turbine |
| CN115451431B (en) * | 2022-09-22 | 2024-04-16 | 中国联合重型燃气轮机技术有限公司 | Fuel nozzle premixing system for combustion chamber of gas turbine |
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| Publication number | Publication date |
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| CN107036098B (en) | 2019-10-11 |
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Granted publication date: 20191011 Termination date: 20210414 |