CN207648850U - A kind of staged combustion device of fuel oil cooling flame tube wall surface - Google Patents
A kind of staged combustion device of fuel oil cooling flame tube wall surface Download PDFInfo
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- CN207648850U CN207648850U CN201721539264.XU CN201721539264U CN207648850U CN 207648850 U CN207648850 U CN 207648850U CN 201721539264 U CN201721539264 U CN 201721539264U CN 207648850 U CN207648850 U CN 207648850U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model provides a kind of staged combustion device of fuel oil cooling flame tube wall surface, the staged combustion device includes main combustion stage fuel inlet, main combustion stage fuel channel, burner inner liner circumferential side wall and main combustion stage air duct, and the main combustion stage fuel inlet is located at the middle and back of the outer wall of the staged combustion device；One end of the main combustion stage fuel channel is connected with the main combustion stage fuel inlet, and the other end is adjacent with the outlet of main combustion stage air duct；The burner inner liner circumferential side wall is the double-deck wall surface.
Description
Technical field
The utility model belongs to gas-turbine combustion chamber technical field, and in particular to a kind of fuel oil cooling flame tube wall surface
Staged combustion device.
Background technology
With the continuous improvement that aero-engine performance requires, cycle of engine parameter and component efficiencies will further increase
Greatly, the technology of engine chamber requires also be continuously improved.Engine chamber development trend of new generation is mainly manifested in：Combustion
Continuously improving for room performance is burnt, chamber length constantly shortens, and airload is significantly increased, and volumetric heat intensity significantly increases, and uses
Service life greatly prolongs.
In order to meet the power performance of following aero-engine, aero-engine requires combustion chamber components to develop into height
Temperature rises combustion chamber, and import fuel gas temperature is to improve engine cycle efficiency to increase thrust before mainly improving turbine.Therefore,
Next-generation engine chamber inlet temperature and warm liter level are obviously higher by a level than existing engine.Have an high regard in height
Than in engine, the characteristics of combustion chamber components is superhigh temperature liter, as a comparison with the combustion chamber of 8 level-one of thrust-weight ratio, it is next-generation first
Thrust-weight ratio into engine will reach 12-20, and the oil-gas ratio of combustion chamber will be improved by 0.027 to the section of 0.04-0.05.
It is affected by this, the outlet temperature of combustion chamber will reach 2000-2400K.Oil-gas ratio and fuel gas temperature, which greatly improve, will make hair
Motivation combustion chamber faces great technical risk test.
The first problem that high temperature rise combustor faces in design is to promote combustion according to the mentality of designing of traditional combustion room
The oil-gas ratio of room is burnt, the efficiency of combustion of high oil-gas ratio operating mode can not ensure under the premise of ensureing combustion chamber fuel-lean blowout performance,
It smolders simultaneously and is also unable to get good inhibition.With the raising of combustion chamber oil-gas ratio, high temperature rise is carried out according to conventional combustion room
Combustion chamber design will face the situation that smoke level is significantly increased.
Second difficult point of high temperature rise combustor design is that aero-engine thrust-weight ratio constantly increases, and burning room temperature rises not
It is disconnected to improve, it is substantially reduced for cooling air capacity.In Combustion chamber design, the air into combustion chamber is divided into three parts use,
For a part for burning, a part is used for cooling flame cylinder, and a part improves the uniform of outlet temperature field for blending cooling
Property.For high temperature rise combustor, high oil-gas ratio is intended to increase substantially the air point that burning is participated in combustion chamber
With ratio, such as the high temperature rise combustor for oil-gas ratio within the scope of 0.04-0.05,50%~90% air are necessarily used for firing
It burns and blends.The reduction of air allocation proportion in combustion chamber for cooling down locular wall is an inexorable trend.Therefore, it can only take
Technical measures improve flame cylinder material heatproof level and cooling efficiency, reduce cooling air distribution.With combustion chamber oil-gas ratio
Increase, be not merely burner inner liner endurance issues, also efficiency of combustion and disposal of pollutants problem, everyway requires wall cooling
Tolerance is reduced, because wall cooling gas has negative effect to the formation of CO and UHC.Meanwhile the pressure ratio of engine compressor and
The raising of efficiency leads to further increasing for combustor inlet temperature, this means that for the cooling empty of combustion chamber flame drum
Gas quality decline.Therefore, under conditions of material has no revolutionary progress, advanced efficient Compound cooling mode is taken to keep
The normal operating conditions of combustion chamber is the huge technological challenge that high temperature rise combustor faces, and the inexorable trend developed.
The raising of combustor inlet temperature and Wen Sheng so that the cooling condition of combustion chamber components is more harsh, and fires simultaneously
Needing head combustion zone, there are good combustions for the promotion (Wen Sheng, efficiency of combustion, outlet temperature uniformity) of burning room performance indicator
Flame region is burnt, these need the atomization of fuel oil and evaporation characteristic to be further improved.Therefore, in burner inner liner and head mist
Disguise set some need emphasis cool down regions, rationally introduce fuel flow path, by the heat liquid fuel of wall surface into
Row transfer, while the fuel oil that will be atomized and be evaporated is preheated with this partial heat, this measure can greatly improve burning
The thermal protection ability of room and atomization and the evaporation effect of head fuel oil, to ensure service life and the performance requirement of combustion chamber components.
Utility model content
For overcome the deficiencies in the prior art, the utility model provides a kind of fractional combustion of fuel oil cooling flame tube wall surface
Device, by including that head end wall distance high-temperature flame region more closely needs in burner inner liner primary zone wall surface and head atomising device
The region of emphasis cooling, introduces fuel flow path, and fuel oil is classified and main combustion stage fuel oil is made to pass through internal flow channel by burner inner liner
The waste heat of wall surface absorbs transfer, while will be entered in the swirl-flow devices of head with the preheating of this partial heat and be atomized and steamed
The fuel oil of hair.In addition it is to ensure wide stable operation range, the hierarchical policy of this burning cooperation uses center pre-combustion grade rich oil
Burning, outer shroud main combustion stage poor oil firing, the burning tissues scheme that downstream inner and outer ring combustion gas mutually blends.Wherein, even fire of rich oil is
To the contradiction between solving stability and smoldering, while being also from source to control the generation of smoldering in fuel-rich combustion area
Improve the important means of Exit temperature distribution uniformity；Main combustion stage is by using lean-burn topologies scheme, it is ensured that the atomization of fuel oil is filled
Divide and blending is evenly distributed, to meet the performance requirement of big state.The utility model is achieved through the following technical solutions：
A kind of staged combustion device of fuel oil cooling flame tube wall surface, the staged combustion device include air intake, main combustion
Grade fuel inlet, main combustion stage fuel channel, burner inner liner circumferential side wall and main combustion stage air duct；Main combustion stage fuel inlet position
In the middle and back of the staged combustion device, one end of the main combustion stage fuel channel is connected with the main combustion stage fuel inlet
Logical, the other end is adjacent with the outlet of main combustion stage air duct, and (preferred, the outlet of the main combustion stage fuel channel is close to institute
State the outlet of main combustion stage air duct), the main combustion stage fuel channel is by way of the part of burner inner liner by the burner inner liner peripheral side
Wall limits, and the burner inner liner circumferential side wall is the double-deck wall surface.
Wherein, it is preferred that the number of the main combustion stage fuel inlet can be multiple, and the main combustion stage fuel inlet can be with
Junction positioned at the middle part of the staged combustion device outer wall and tail portion, the tail portion of the staged combustion device outer wall and burner inner liner
Tail shape is contraction type, and the outlet and the outlet of the main combustion stage air duct of the main combustion stage fuel channel are located at flame
Cylinder head zone, and be connected to flame tube inner chamber, the burner inner liner circumferential side wall (the i.e. double-deck wall surface) is arranged in burner inner liner front
Primary zone wall surface.
Further, which further includes that pre-combustion grade fuel inlet, pre-combustion grade fuel channel and pre-combustion grade are empty
Gas channel；The pre-combustion grade fuel inlet is located at the head of the staged combustion device, the outlet of the pre-combustion grade fuel channel with
The outlet of the pre-combustion grade air duct is adjacent, and (preferred, the outlet of the pre-combustion grade fuel channel is close to pre-combustion grade sky
The outlet in gas channel), the outlet and the outlet of the pre-combustion grade air duct of the pre-combustion grade fuel channel are located at burner inner liner head
Portion region, and be connected to flame tube inner chamber.
Wherein, it is preferred that the pre-combustion grade fuel inlet number can be multiple.
Further, which further includes intergrade air duct；The intergrade air duct is located at institute
It states between pre-combustion grade air duct and the main combustion stage air duct.
Wherein, it is furthermore preferred that the intergrade air duct and the pre-combustion grade air duct and the main combustion stage air
Channel is adjacent (preferred, three is close to).
Further, the pre-combustion grade air duct, the intergrade air duct and the main combustion stage air duct
Number is identical and is multiple, and is uniformly distributed in flame tube head region around the outlet of the pre-combustion grade fuel channel.
Further, the pre-combustion grade fuel channel uses fuel-rich combustion pattern with pre-combustion grade air duct cooperation.
Further, the main combustion stage fuel channel uses poor oil firing's pattern with main combustion stage air duct cooperation.
Further, it is provided with main combustion stage air swirling device in the main combustion stage air duct, form is vane type
Or beveling cellular type, air swirl mode is axial rotational flow or radial vortex, and air swirl rotation direction is clockwise or counterclockwise.
Wherein, more preferably structure is, the number phase of the main combustion stage air swirling device and the main combustion stage air duct
Together.
Further, it is provided with pre-combustion grade air swirling device in the pre-combustion grade air duct, form is vane type
Or beveling cellular type, air swirl mode is axial rotational flow or radial vortex, and air swirl rotation direction is clockwise or counterclockwise.
Wherein, more preferably structure is, the number phase of the pre-combustion grade air swirling device and the pre-combustion grade air duct
Together.
Further, it is provided with intergrade air swirling device in the intergrade air duct, form is vane type
Or beveling cellular type, air swirl mode is axial rotational flow or radial vortex, and air swirl rotation direction is clockwise or counterclockwise.
Wherein, more preferably structure is, the number phase of the intergrade air swirling device and the intergrade air duct
Together.
Further, the staged combustion device further includes air intake；The air intake is located at the classification combustion
Burn device head center.
Wherein, it is preferred that air is entered the head zone of the staged combustion device by the air intake, in the pre-burning
Under the action of grade air swirling device, intergrade air swirling device and main combustion stage air swirling device, pass through the pre-combustion grade
Air duct, the intergrade air duct and the main combustion stage air duct enter flame tube inner chamber.
Further, the air intake, pre-combustion grade fuel channel, the pre-combustion grade air duct, the intergrade are empty
Gas channel, the main combustion stage air duct and main combustion stage fuel channel outlet collectively constitute flame tube head atomising device.
The utility model has the beneficial effects that：
1) the utility model uses fuel oil cooling flame tube wall surface and head atomising device wall surface, and combustion chamber is greatly reduced
Required cooling air dosage, the air capacity saved can improve the Wen Sheng of combustion chamber, improve for burning with fuel
The power performance of engine, and the cooling capacity of liquid fuel is higher than cooling air, significantly improves combustion chamber cooling structure
Cooling efficiency.
2) liquid fuel in the utility model after the heating of thermal-flame tube wall surface, atomization and evaporation effect are more
It is excellent, it is more preferable with the mixed effect of air, be conducive to the improvement of the raising and outlet temperature uniformity of combustion efficiency of combustion chamber.
3) contradiction between the grading combustion technology scheme of the utility model can solve stability and smolder, it is ensured that fuel oil
Atomization is fully and gas mixing is evenly distributed.
Description of the drawings
The structural principle of the staged combustion device of the fuel oil cooling flame tube wall surface of Fig. 1 specific embodiments of the present invention
Schematic diagram.
Symbol description is as follows in figure：1 air intake, 2 pre-combustion grade fuel inlets, 3 main combustion stage fuel inlets, the combustion of 4 pre-combustion grades
Expect channel, 5 pre-combustion grade air ducts, 6 intergrade air ducts, 7 main combustion stage air ducts, 8 main combustion stage fuel channels, 9 flames
Cylinder circumferential side wall, 10 pre-combustion grade air swirling devices, 11 intergrade air swirling devices, 12 main combustion stage air swirling devices.
Specific implementation mode
Fig. 1 is the principle schematic diagram of the staged combustion device of the fuel oil cooling flame tube wall surface of the utility model, under
Face elaborates to the staged combustion device of the fuel oil cooling flame tube wall surface of the utility model in conjunction with Fig. 1.
The staged combustion device of the fuel oil cooling flame tube wall surface of the utility model includes air intake 1, main combustion stage fuel
Entrance 3, main combustion stage fuel channel 8, burner inner liner circumferential side wall 9 and main combustion stage air duct 7, main combustion stage fuel inlet 3, which is located at, to be divided
The middle and back of grade burner；The outlet of main combustion stage fuel channel 8 is close to the outlet of main combustion stage air duct 7；Main combustion stage fuel
Channel 8 is limited by way of the part of burner inner liner by burner inner liner circumferential side wall 9；Burner inner liner circumferential side wall 9 is the double-deck wall surface.Air intake
1 is located at staged combustion device head center.
Staged combustion device further includes pre-combustion grade fuel inlet 2, pre-combustion grade fuel channel 4 and pre-combustion grade air duct 5；In advance
Fire the head that grade fuel inlet 2 is located at staged combustion device；The outlet of pre-combustion grade fuel channel 4 is close to pre-combustion grade air duct 5
Outlet；The outlet of pre-combustion grade fuel channel 4 and the outlet of pre-combustion grade air duct 5 are located at flame tube head region, and with fire
Flame tube inner chamber is connected to.
Staged combustion device further includes intergrade air duct 6, and intergrade air duct 6 is located at pre-combustion grade air duct 5
Between main combustion stage air duct 7.
Pre-combustion grade air duct 5, intergrade air duct 6 it is identical as the number of main combustion stage air duct 7 and be it is multiple,
It is uniformly distributed in flame tube head region around the outlet of pre-combustion grade fuel channel 4.
Pre-combustion grade fuel channel 4 uses fuel-rich combustion pattern with the cooperation of pre-combustion grade air duct 5.
Main combustion stage fuel channel 8 uses poor oil firing's pattern with the cooperation of main combustion stage air duct 7.
It is provided with main combustion stage air swirling device 12 in main combustion stage air duct 7, form is vane type or beveling cellular type,
Air swirl mode is axial rotational flow or radial vortex, and air swirl rotation direction is clockwise or counterclockwise.
It is provided with pre-combustion grade air swirling device 10 in pre-combustion grade air duct 5, form is vane type or beveling cellular type,
Air swirl mode is axial rotational flow or radial vortex, and air swirl rotation direction is clockwise or counterclockwise.
It is provided with intergrade air swirling device 11 in intergrade air duct 6, form is vane type or beveling cellular type,
Air swirl mode is axial rotational flow or radial vortex, and air swirl rotation direction is clockwise or counterclockwise.
In more detail, as shown in Figure 1, the head of staged combustion device and the tail shape of tail portion and burner inner liner are
The number of contraction type, main combustion stage fuel inlet 3 is 2, the outlet of main combustion stage fuel channel 8 and going out for main combustion stage air duct 7
Mouth is located at flame tube head region, and is connected to flame tube inner chamber, and burner inner liner circumferential side wall 9 (the i.e. double-deck wall surface) is arranged in flame
Cylinder front primary zone wall surface.
The number of pre-combustion grade fuel inlet 2 is 1.
Intergrade air duct 6 is close to pre-combustion grade air duct 5 and main combustion stage air duct 7.
Main combustion stage air swirling device 12 and main combustion stage air duct 7, pre-combustion grade air swirling device 10 are empty with pre-combustion grade
Gas channel 5, intergrade air swirling device 11 is identical as the number of intergrade air duct 6, is 2.
Air enters staged combustion device head zone by air intake 1, in pre-combustion grade air swirling device 10, centre
Under the action of grade air swirling device 11 and main combustion stage air swirling device 12, by way of pre-combustion grade air duct 5, intergrade air
Channel 6 and main combustion stage air duct 7 enter flame tube inner chamber.
Air intake 1, pre-combustion grade fuel channel 4, pre-combustion grade air duct 5, intergrade air duct 6, main combustion stage air
The outlet of channel 7 and main combustion stage fuel channel 8 collectively constitutes flame tube head atomising device.
The workflow of the staged combustion device of the utility model is：Under igniting startup and the small operating mode of slow train, center
Pre-combustion grade is opened and continue working, and it is steady that the even combustion pre-combustion grade of rich oil is used to ensure that igniting to start reliable and slow train operating mode combustion flame
It is fixed.When working condition further increases, main combustion stage fuel delivery starts, and fuel oil enters by internal flow channel in the swirl-flow devices of head
Main combustion stage flow channel be atomized and evaporated, main combustion stage air and fuel oil enter swirl channel catchment after being sufficiently mixed
Domain is started to burn by pre-combustion grade flame ignition.Main combustion stage lean-burn topologies scheme can ensure that the atomization of fuel oil fully and blending divides
Cloth is uniform, to meet the performance requirement of big state.
Obviously, the above embodiment is only intended to clearly illustrate the utility model example, and is not to this
The restriction of the embodiment of utility model.For those of ordinary skill in the art, on the basis of the above description also
It can make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.And this
Protection model of the obvious changes or variations that a little spirit for belonging to the utility model are extended out still in the utility model
Among enclosing.
Claims (12)
1. a kind of staged combustion device of fuel oil cooling flame tube wall surface, which is characterized in that the staged combustion device includes sky
Gas entrance (1), main combustion stage fuel inlet (3), main combustion stage fuel channel (8), burner inner liner circumferential side wall (9) and main combustion stage air are logical
Road (7)；
The main combustion stage fuel inlet (3) is located at the middle and back of the staged combustion device；
The burner inner liner circumferential side wall (9) is the double-deck wall surface；
The main combustion stage fuel channel (8) is limited by way of the part of burner inner liner by the burner inner liner circumferential side wall (9)；
The staged combustion device further includes pre-combustion grade fuel inlet (2), pre-combustion grade fuel channel (4) and pre-combustion grade air duct
(5)；
The pre-combustion grade fuel inlet (2) is located at the head of the staged combustion device；
The outlet of the pre-combustion grade fuel channel (4) is adjacent with the outlet of pre-combustion grade air duct (5)；
The outlet of the pre-combustion grade fuel channel (4) and the outlet of the pre-combustion grade air duct (5) are located at flame tube head area
Domain, and be connected to flame tube inner chamber.
2. staged combustion device as described in claim 1, which is characterized in that one end of the main combustion stage fuel channel (8) with
The main combustion stage fuel inlet (3) is connected, and the other end is adjacent with the outlet of main combustion stage air duct (7).
3. staged combustion device as claimed in claim 1 or 2, which is characterized in that the device further includes intergrade air duct
(6), the intergrade air duct (6) be located at the pre-combustion grade air duct (5) and the main combustion stage air duct (7) it
Between.
4. staged combustion device as claimed in claim 1 or 2, which is characterized in that setting in the main combustion stage air duct (7)
There is main combustion stage air swirling device (12).
5. staged combustion device as claimed in claim 1 or 2, which is characterized in that setting in the pre-combustion grade air duct (5)
There is pre-combustion grade air swirling device (10).
6. staged combustion device as claimed in claim 3, which is characterized in that be provided in the intergrade air duct (6)
Intergrade air swirling device (11).
7. staged combustion device as claimed in claim 1 or 2, which is characterized in that the bilayer wall surface is arranged before burner inner liner
Portion primary zone wall surface.
8. staged combustion device as claimed in claim 4, which is characterized in that the main combustion stage air swirling device (12) is axis
To eddy flow or radial vortex, eddy flow rotation direction is that clockwise or counterclockwise, form is vane type or beveling cellular type.
9. staged combustion device as claimed in claim 5, which is characterized in that the pre-combustion grade air swirling device (10) is axis
To eddy flow or radial vortex, eddy flow rotation direction is that clockwise or counterclockwise, form is vane type or beveling cellular type.
10. staged combustion device as claimed in claim 6, which is characterized in that the intergrade air swirling device (11) is
Axial rotational flow or radial vortex, eddy flow rotation direction are that clockwise or counterclockwise, form is vane type or beveling cellular type.
11. staged combustion device as described in claim 1, which is characterized in that the pre-combustion grade fuel channel (4) with it is described pre-
Grade air duct (5) is fired to coordinate using fuel-rich combustion pattern.
12. the staged combustion device as described in claim 1 or 11, which is characterized in that the main combustion stage fuel channel (8) and institute
It states main combustion stage air duct (7) cooperation and uses poor oil firing's pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721539264.XU CN207648850U (en) | 2017-11-16 | 2017-11-16 | A kind of staged combustion device of fuel oil cooling flame tube wall surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721539264.XU CN207648850U (en) | 2017-11-16 | 2017-11-16 | A kind of staged combustion device of fuel oil cooling flame tube wall surface |
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| Publication Number | Publication Date |
|---|---|
| CN207648850U true CN207648850U (en) | 2018-07-24 |
Family
ID=62888475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721539264.XU Active CN207648850U (en) | 2017-11-16 | 2017-11-16 | A kind of staged combustion device of fuel oil cooling flame tube wall surface |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763667A (en) * | 2017-11-16 | 2018-03-06 | 中国航空发动机研究院 | A kind of staged combustion device of fuel oil cooling flame tube wall surface |
| CN110715323A (en) * | 2019-10-14 | 2020-01-21 | 哈尔滨工程大学 | Rotary detonation combustor for liquid fuel |
-
2017
- 2017-11-16 CN CN201721539264.XU patent/CN207648850U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763667A (en) * | 2017-11-16 | 2018-03-06 | 中国航空发动机研究院 | A kind of staged combustion device of fuel oil cooling flame tube wall surface |
| CN110715323A (en) * | 2019-10-14 | 2020-01-21 | 哈尔滨工程大学 | Rotary detonation combustor for liquid fuel |
| CN110715323B (en) * | 2019-10-14 | 2020-11-06 | 哈尔滨工程大学 | Rotary detonation combustor for liquid fuel |
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