CN106051826A - Pyrolysis fuel gas and air rapid mixing device - Google Patents
Pyrolysis fuel gas and air rapid mixing device Download PDFInfo
- Publication number
- CN106051826A CN106051826A CN201610416346.9A CN201610416346A CN106051826A CN 106051826 A CN106051826 A CN 106051826A CN 201610416346 A CN201610416346 A CN 201610416346A CN 106051826 A CN106051826 A CN 106051826A
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- lobe
- air
- mixing
- flow passage
- cracking
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention aims at providing a pyrolysis fuel gas and air rapid mixing device. The pyrolysis fuel gas and air rapid mixing device comprises an outer shell, an inner shell and a lobe mixer, wherein the inner shell is arranged in the outer shell; a hydrocyclone air inlet passage is formed between the inner shell and the outer shell; the lobe mixer comprises a lobe mixing structure inner passage wall, lobe convex structures and lobe concave structures; the lobe convex structures and the lobe concave structures are arranged alternately to form an annular structure; the lobe mixing structure inner passage wall is connected with the annular structure; a lobe mixing structure inner passage pyrolysis fuel gas inlet communicating with a rich oil pyrolysis combustion chamber is formed in the lobe mixing structure inner passage wall; the lobe mixer is arranged in the inner shell, and a lobe mixing air passage is formed between the lobe mixing structure inner passage wall and the inner shell; an inclined radial runner provided with cyclone blades is installed at an outlet of the lobe mixer; and a pyrolysis fuel gas and air mixing gas outlet is arranged at an outlet of the inclined radial runner. The pyrolysis fuel gas and air rapid mixing device can complete rapid mixing of pyrolysis fuel gas and air, and lowers generation of lean burning area NOx.
Description
Technical field
The present invention relates to the mixing device of a kind of gas-turbine combustion chamber, specifically gas-turbine combustion chamber.
Background technology
One of low emissions combustion technology central topic being increasingly becoming engine combustion technology, have developed for this problem
Such as fractional combustion, rich oil-extinguishing-oil-poor (RQL), bispin premixed swirl (TAPS), lean premixed preevaporated (LPP), oil-poor
The technology such as multi-point injection (LDI).These technology can meet the current International Civil Aviation Organization needs to discharge.RQL combustion technology
Being the outstanding person in numerous low emissions combustion technology, the burning in rich oil district is the important ring that its combustion technology realizes.At rich oil
In burning zone, fuel oil mixes combining combustion with air with the ratio of high equivalent weight ratio (1.4-1.8), produces a large amount of high activity group, this
Lay a good foundation with poor oil firing for extinguishing afterwards.Meanwhile, the temperature in fuel-rich combustion district is also to affect NOXGenerate important because of
Element.First, problems faced is, rich oil district can not use air film type to cool down, to reduce equivalent proportion burning generation nitrogen oxides；Its
Secondary, the temperature of combustion zone is unsuitable too high, to avoid thermal NOXGeneration.
In order to solve such problem, a kind of new combustor control strategy fuel-rich autothermic cracking combustion system is proposed,
This strategy is similar to RQL low emission combustor control strategy, and first fuel oil is under the conditions of high equivalent weight ratio, carries out in fuel-rich cracking section
Reaction, due to excessive fuel, combustion flame temperature is relatively low, and whole reaction zone is in the N in low-temperature reduction atmosphere, in air2Very
Difficulty is oxidized to NO, and superfluous fuel can absorb the heat of combustion zone, is evaporated and cracks, and forms high energy hydrogen and little carbon
Chain hydrocarbon content, reduce further combustion zone temperature, tentatively with the generation of fuel-rich combustion form control NOx.Then, the most completely
The cracking fuel of burning, by quickly blending with mixing air, forms lean combustion gaseous mixture, again burns in fuel-poor region, this strategy
Avoid the combustor appropriately ratio generation of the high-temperature area burnt dexterously, thus reduce the purpose of pollutant NOx discharge.
But, if ensure that cracking combustion gas quickly blends with air, making cracking combustion gas be still in fuel-poor region poor oil firing needs to solve
A great problem certainly.
Summary of the invention
It is an object of the invention to provide the quick blending that can complete to crack combustion gas with air, reduce fuel-poor region NOx raw
A kind of cracking quick mixing device of air-gas become.
The object of the present invention is achieved like this:
The one of the present invention cracking quick mixing device of air-gas, is characterized in that: include that shell body, inner housing, lobe are mixed
Mixed device, inner housing is arranged in shell body, forms cyclone air inlet runner between inner housing and shell body, and described lobe is mixed
Mixed device includes lobe mixing structure inner flow passage wall, lobe male structure, the recessed structure of lobe, and lobe male structure structure recessed with lobe is alternate
Arranging and constitute loop configuration, the center of loop configuration end is closed type structure, and lobe mixing structure inner flow passage wall connects ring junction
Structure, lobe mixing structure inner flow passage wall forms the lobe mixing structure inner flow passage cracking combustion gas of connection rich oil cracking combustor and enters
Mouthful, lobe-mixer is arranged in inner housing, forms lobe dilution air between lobe mixing structure inner flow passage wall and inner housing
Runner, lobe mixing structure inner flow passage cracking fuel gas inlet connection lobe male structure, lobe dilution air flow passage lobe is recessed
Structure, the exit of lobe-mixer arranges the oblique radial flow path being provided with swirl vane, cyclone air inlet flow passage
Tiltedly radial flow path, the outlet of oblique radial flow path arranges cracking air-gas mixed gas outlet.
The present invention can also include:
1, lobe mixing structure inner flow passage cracking fuel gas inlet constitutes lobe mixing structure inner flow passage, ripple with lobe male structure
Lobe mixing structure inner flow passage is contraction-flaring form.
Present invention have an advantage that
1, in the fuel-rich combustion room of gas turbine rich oil-extinguishing-oil-poor (RQL) combustion chambers burn technical field and oil-poor combustion
Burn in the linkage section between room, propose the one cracking quick mixing device of air-gas first.
2, cracking combustion gas and air all can flow through a converging diverging passage, and the flowing velocity of fluid can be made quickly to increase,
The effect of cyclone is to allow cracking air-gas quickly blend.
3, the converging diverging passage of lobe can be allocated in proportion, and cracking combustion gas, air can be made to blend by a certain percentage.
Accompanying drawing explanation
Fig. 1 is the present invention installation diagram with fuel-rich combustion room；
Fig. 2 is the three-dimensional cutaway view of the present invention；
Fig. 3 is the section plan of the present invention；
Fig. 4 is Fig. 3 slice location schematic diagram.
Detailed description of the invention
Illustrate below in conjunction with the accompanying drawings and the present invention be described in more detail:
In conjunction with Fig. 1-4, the present invention cracks the quick mixing device of air-gas and includes cyclone air inlet runner 1, lobe
Dilution air runner 2, installs the oblique radial flow path 3 of swirl vane, lobe mixing structure inner flow passage cracking fuel gas inlet 5, cracking
Air-gas mixed gas outlet 6, swirl vane 7, lobe-mixer 8, lobe male structure 9 is also lobe mixing structure inner flow passage
Cracking gas outlet, the recessed structure of lobe 10 is also lobe mixing structure outer flow passage air outlet slit, install swirl vane clino-diagonal to
Runner exit 11, the closed type structure 12 of lobe mixing structure center flow channels, cyclone 14, this device cracks combustor 4 with rich oil
Mounting structure is as shown in Figure 1.
Wherein swirl vane 7 is arranged on cyclone end, and lobe mixing structure center flow channels is closed type structure 12, and rich oil is certainly
Cracking combustor 4 outlet is connected with lobe structure, and due to the concavo-convex change of lobe structure, cracking combustion gas 13 flows into lobe-mixer
Multiply will be divided into after entrance 5, lobe male structure 9 flow out.At lobe outer tunnel 2, air is also divided into multiply, recessed by lobe
Structure 10 flows out, and lobe air duct 10 becomes to distribute alternately with lobe cracking combustion gas internal channel 9, can control ratio and blend.Ripple
The outlet of valve structure connects cyclone, forms contraction-flaring passage 9, outside lobe structure between lobe mixing structure and cyclone
Runner air flows out through supercontraction-flaring passage 9 with cracking combustion gas, and cracking combustion gas exports into alternate point with air in lobe structure
Cloth, and flow velocity reduction, substantial amounts of air is entered by cyclone air intlet 3, after swirl vane 7 eddy flow and from lobe structure
The cracking air-gas that distributes alternately blends, finally from cracking air-gas mixed gas outlet 6 outflow, owing to rotational flow air has
Bigger spinning momentum, has further speeded up the quick blending of cracking air-gas, and the gas quickly blended enters subordinate's burning
Room carries out poor oil firing.
Owing to lobe mixing structure center flow channels is closed type structure, cracking combustion gas can only be flowed out from lobe male structure 9.
Lobe mixing structure inner flow passage is cracking combustion gas runner, for contraction-flaring form in structure, is mainly at contraction section
Accelerate cracking combustion gas self to blend, at expansion segment mainly for reducing cracking gas flow rate, improve it and even revolve with outer flow passage
The air of stream device blends performance.
Lobe mixing structure is concavo-convex alternate layout, and internal channel cracking blast tube and outer tunnel air go out in lobe structure
Mouth can distribute alternately.
Cyclone inner vanes is cut sth. askew form, and its swirl vane internal air passageway in a certain angle with the axis, is split
Solving after air-gas blends can be made cracking air-gas quickly mix by the quick cyclonic action of cyclone further
Mixed.
Fig. 1 and Fig. 2 together illustrates the operation principle of this lobe-mixer, and what rich oil autothermic cracking combustor exit was discharged splits
Solution combustion gas 13 first passes through lobe mixing structure inner flow passage entrance 5 and enters, at the sky that lobe outlet will blend with cracking combustion gas
Gas flows into from dilution air passage 2, outer flow passage air outlet slit 10 flow out, and strengthens by lobe mixing structure inner flow passage outlet 9 stream
The air that the cracking combustion gas gone out and outer flow passage air outlet slit 10 flow out blends, and this process can control the two ratio and blend.Another
Partial air enters the oblique radial flow path 3 in swirl vane from cyclone gas flow 1, after swirl vane 7 eddy flow, and is splitting
Solve the air-gas mixed gas outlet 6 quick swirling eddy of formation.Owing to rotational flow air has bigger spinning momentum, enter one
Step accelerates the quick blending of cracking air-gas.
Fig. 3 further illustrates the main mixing structure of this quick mixing device of cracking air-gas.Lobe mixing structure
Inner flow passage is contraction-flaring form 5,9, and contraction section 5 accelerates cracking combustion gas self and blends, and reduces cracking combustion at expansion segment 9
Gas velocity, improves it and blends performance with outer flow passage air 10.Outer flow passage is shrink form 10, because its passage is relative to dilution air
Passage 2 reduces half, so being shrink form.Quickly axial flow creates certain election effect to flame, and this makes
Move behind the high-temperature region of poor oil firing of subordinate room, effectively prevent unfavorable factors such as mixing machine high temperature sinterings, the most also
Stable flame can be played, prevent the effect of rough burning.
Fig. 4 illustrates the slice location selected by Fig. 3.
Fig. 4 illustrates being mainly designed to form a contraction-flaring passage 5,9 with lobe-mixer of cyclone
And provide the common of a good mode that quickly blends, contraction-flaring passage 5,9 and cyclone to cracking combustion gas and air
Effect makes mixed gas speed increase further, produces and elects flame, makes high-temperature region quickly blend dress away from this cracking air-gas
Put.
Claims (2)
1. the cracking quick mixing device of air-gas, is characterized in that: include shell body, inner housing, lobe-mixer, interior
Housing is arranged in shell body, forms cyclone air inlet runner, described lobe-mixer bag between inner housing and shell body
Include lobe mixing structure inner flow passage wall, lobe male structure, the recessed structure of lobe, lobe male structure and the recessed structure of lobe alternate layout structure
Circularizing structure, the center of loop configuration end is closed type structure, and lobe mixing structure inner flow passage wall connects loop configuration, lobe
Mixing structure inner flow passage wall forms the lobe mixing structure inner flow passage cracking fuel gas inlet of connection rich oil cracking combustor, and lobe is mixed
Mixed device is arranged in inner housing, forms lobe dilution air runner, lobe between lobe mixing structure inner flow passage wall and inner housing
Mixing structure inner flow passage cracking fuel gas inlet connection lobe male structure, the lobe dilution air recessed structure of flow passage lobe, lobe
The exit of mixing machine arranges the oblique radial flow path being provided with swirl vane, the oblique radial flow of cyclone air inlet flow passage
Road, the outlet of oblique radial flow path arranges cracking air-gas mixed gas outlet.
A kind of cracking quick mixing device of air-gas the most according to claim 1, is characterized in that: lobe mixing structure
Inner flow passage cracking fuel gas inlet constitutes lobe mixing structure inner flow passage with lobe male structure, and lobe mixing structure inner flow passage is for receiving
Contracting-flaring form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610416346.9A CN106051826B (en) | 2016-06-12 | 2016-06-12 | A kind of quick mixing device of cracking air-gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610416346.9A CN106051826B (en) | 2016-06-12 | 2016-06-12 | A kind of quick mixing device of cracking air-gas |
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| CN106051826A true CN106051826A (en) | 2016-10-26 |
| CN106051826B CN106051826B (en) | 2018-07-24 |
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| CN201610416346.9A Active CN106051826B (en) | 2016-06-12 | 2016-06-12 | A kind of quick mixing device of cracking air-gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246629A (en) * | 2017-06-14 | 2017-10-13 | 华电电力科学研究院 | Cyclone with lobe swirl vane |
| CN107366929A (en) * | 2017-07-20 | 2017-11-21 | 中国科学院工程热物理研究所 | Nozzle with expansion shape profile cyclone |
| CN107576502A (en) * | 2017-08-10 | 2018-01-12 | 中国北方发动机研究所(天津) | A kind of turbocharger test platform combustion chamber with mixing section |
| CN108266753A (en) * | 2016-12-30 | 2018-07-10 | 通用电气公司 | For dispersing the system and gas turbine combustor of fuel spilling |
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|---|---|---|---|---|
| CN202417714U (en) * | 2011-12-13 | 2012-09-05 | 湖南航天机电设备与特种材料研究所 | Turbine-based fuel gas generator for floating platform of emergency hot air airship |
| CN102777934A (en) * | 2011-05-10 | 2012-11-14 | 中国科学院工程热物理研究所 | Standing-vortex soft combustion chamber |
| CN103196159A (en) * | 2013-03-18 | 2013-07-10 | 哈尔滨工程大学 | Annular grading trapped vortex combustor |
| CN103277815A (en) * | 2013-05-10 | 2013-09-04 | 南京航空航天大学 | Lean oil portion pre-mixing pre-evaporation homogenizing oil feeding device |
-
2016
- 2016-06-12 CN CN201610416346.9A patent/CN106051826B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777934A (en) * | 2011-05-10 | 2012-11-14 | 中国科学院工程热物理研究所 | Standing-vortex soft combustion chamber |
| CN202417714U (en) * | 2011-12-13 | 2012-09-05 | 湖南航天机电设备与特种材料研究所 | Turbine-based fuel gas generator for floating platform of emergency hot air airship |
| CN103196159A (en) * | 2013-03-18 | 2013-07-10 | 哈尔滨工程大学 | Annular grading trapped vortex combustor |
| CN103277815A (en) * | 2013-05-10 | 2013-09-04 | 南京航空航天大学 | Lean oil portion pre-mixing pre-evaporation homogenizing oil feeding device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266753A (en) * | 2016-12-30 | 2018-07-10 | 通用电气公司 | For dispersing the system and gas turbine combustor of fuel spilling |
| CN107246629A (en) * | 2017-06-14 | 2017-10-13 | 华电电力科学研究院 | Cyclone with lobe swirl vane |
| CN107366929A (en) * | 2017-07-20 | 2017-11-21 | 中国科学院工程热物理研究所 | Nozzle with expansion shape profile cyclone |
| CN107366929B (en) * | 2017-07-20 | 2020-03-17 | 中国科学院工程热物理研究所 | Nozzle with divergent profile swirler |
| CN107576502A (en) * | 2017-08-10 | 2018-01-12 | 中国北方发动机研究所(天津) | A kind of turbocharger test platform combustion chamber with mixing section |
| CN107576502B (en) * | 2017-08-10 | 2019-11-12 | 中国北方发动机研究所(天津) | A kind of turbocharger test platform combustion chamber with mixing section |
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| Publication number | Publication date |
|---|---|
| CN106051826B (en) | 2018-07-24 |
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