CN107741030B - A kind of blade injection low emission combustor head with cooling structure - Google Patents
A kind of blade injection low emission combustor head with cooling structure Download PDFInfo
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- CN107741030B CN107741030B CN201710838822.0A CN201710838822A CN107741030B CN 107741030 B CN107741030 B CN 107741030B CN 201710838822 A CN201710838822 A CN 201710838822A CN 107741030 B CN107741030 B CN 107741030B
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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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- 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
- F23R3/34—Feeding into different combustion zones
- F23R3/346—Feeding into different combustion zones for staged combustion
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a kind of, and the blade with cooling structure sprays low emission combustor head, and it mainly includes main combustion stage and pre-combustion grade which, which uses the combustion method of center classification,.Main combustion stage uses blade open-celled structure, and fuel oil axially sprays, and is premixed flame, guarantees to discharge under big operating condition lower.Pre-combustion grade uses bipolar radial swirler, is diffusion flame, guarantees flame stabilization and small operating condition down-firing performance.In addition, the head uses side-by-side three oil circuits runner, can satisfy under big operating condition, pre-combustion grade oil circuit can cool down main combustion stage oil circuit, prevent nozzle coking.Under small operating condition, fuel feeding does not form cavity to main combustion stage oil circuit, can play the role of thermal insulation protection.In addition, pre-combustion grade uses double oil circuits swirl atomizer, the good atomization under different operating conditions can be met.The present invention can guarantee head thermal protection, prevent nozzle coking, guarantee head normal safe operation, and be conducive to combustion chamber has the performances such as good discharge, flame stabilization under different operating conditions.
Description
Technical field
The present invention relates to the technical field on low emission combustor head, in particular to it is a kind of there is cooling structure, can be to prevent
Nozzle deposit carbon, the low emission combustor head sprayed by blade.
Background technique
The Main Trends of The Development of civil aviation modern times civil engine combustion chamber is combustion with reduced pollutants.With international day
The stringent boat of benefit sends out discharge standard, and civil engine combustion chamber must satisfy new discharge standard.Currently used CAEP6
(Committee on Aviation Environmental Protection) standard is non-to the regulation of pollutant effulent
Chang Yange, especially NOx emission requirement；And newest CAEP8 standard is proposed the discharge for being emitted on CAEP6 of NOx
15% is reduced in standard, it is following that gas turbine is fired with the fast development of aircraft industry and the continuous improvement of people's environmental consciousness
Burning chamber contamination discharge can put forward higher requirements.
In addition to meeting low emission performance, aeroengine combustor buring chamber-head portion is due to needing long-term work in high temperature and high pressure environment
In, its thermal deformation and nozzle overheat carbon distribution in order to prevent, and head is needed to carry out thermal protection.
In conclusion it is low to devise a kind of blade injection with cooling structure based on practical implementation by the present invention
Head is discharged, this head uses side-by-side three oil circuits structure, and can all play under different operating conditions prevents fuel oil overheat to spray
Mouth carbon distribution, and there is cavity insulation structure in head, play head heat protective action.This head also uses vane type axial direction
Spray regime, fuel oil and air can be made, which to carry out good blending, reduces the discharge of pollutant to improve efficiency of combustion.
Summary of the invention
The technical problem to be solved by the present invention is being used for aero engine emissions standard increasingly strict in the world
Axial injection mode on blade, provides a kind of head of combustion chamber that can reduce discharge, and be directed to aeroengine combustor buring chamber-head
The high temperature and high pressure environment of portion's work gives full play to the cooling pre-combustion grade oil circuit under different operating conditions using side-by-side three oil circuits structure
Function prevents nozzle deposit carbon.And insulated cavity is applied in head, prevent oil circuit overheat to carbon distribution.
The technical solution adopted by the present invention are as follows: a kind of blade injection low emission combustor head with cooling structure is adopted
The combustion method being classified with center and the structure of three oil circuits side by side, mainly by beam hanger, head body, main combustion stage blade,
It is main combustion stage blade sleeve, interstage section, pre-combustion grade level-one cyclone, pre-combustion grade second cyclone, Venturi tube, pre-combustion grade sleeve, pre-
It fires grade double oil circuits swirl atomizer to constitute, wherein beam hanger and head body can be integrally formed by 3D printing, wherein head body packet
Head body front end and head body rear end are included, 3D printing is completed together for main combustion stage blade and head body, and each blade is axial
It is all provided with main combustion stage oilhole on position, for spraying fuel oil, is blended with air, main combustion stage blade sleeve is covered in main combustion stage leaf
Piece is outer and is welded, and interstage section has screw thread for pre-combustion grade and main combustion stage flame, outer diameter to be isolated, can and head body
It is threadedly coupled；Its internal diameter also has screw thread, can be attached with pre-combustion grade sleeve, pre-combustion grade level-one cyclone and pre-combustion grade
Second cyclone is radially slotted air admission type cyclone, and the two can weld together with Venturi tube.Furthermore pre-combustion grade second level is revolved
Stream device can be welded with pre-combustion grade sleeve, to form pre-combustion grade entirety, then carry out screw thread with interstage section, head body front end
Connection, constitutes entire head.
Wherein, the beam hanger and head body are integrally formed by 3D printing technique, and the two whole interior possesses side-by-side
Three oil circuits, wherein working connection valid circulation area is in 10mm2—80mm2Between, main combustion stage oil enters head body from beam hanger, and
After circumferentially turning around in head body front end, sprayed into each blade, then by aperture on each blade.The double oil of pre-combustion grade
Road includes pre-combustion grade working connection and pre-combustion grade auxiliary oil circuit, and the two is distributed in main combustion stage oil circuit two sides, plays the role of thermal protection.Wherein
Pre-combustion grade working connection valid circulation area is in 5mm2—50mm2Between, pre-combustion grade auxiliary oil circuit valid circulation area is in 1mm2—
30mm2Between.The two-way oil stream of pre-combustion grade enters head body through beam hanger, exists in head body front end around main combustion stage oil circuit
After turning around in circumferential direction, into head body rear end and enters pre-combustion grade double oil circuits swirl atomizer, sprayed.
Wherein, in the head body, including but not limited to one or more heat-insulated cavities are possessed, oil circuit can be risen
To the effect of thermal protection.
Wherein, the main combustion stage blade, blade number are 12-36, and angle is 15 °-60 °, and vane thickness is
0.8-2mm, swirling number are 0.5-1.2.Nozzle opening is provided on the axial direction of each blade, oilhole diameter is 0.2-
1.5mm, total flow number are 60-180kg/ (hr*Mpa^0.5), and fuel oil and air can be made sufficiently to be blended, dirt can be reduced
Contaminate the discharge of object.
Wherein, the pre-combustion grade double oil circuits swirl atomizer, is threadingly attached to head body center, and and Venturi tube
Cooperation, reaches good atomization, combustion efficiency.The small oil circuit nozzle of pre-combustion grade double oil circuits swirl atomizer, flow number are 5-
30kg/ (hr*Mpa^0.5), big oil circuit nozzle flow number are 10-100kg/ (hr*Mpa^0.5).The centrifugation spray of pre-combustion grade double oil circuits
It is 30-120 ° that mouth, which sprays mist of oil subtended angle, and venturi outlet subtended angle is 20-70 °.
Wherein, the outlet subtended angle of the pre-combustion grade sleeve is 10 ° -60 °, subtended angle and the progress of Venturi tube (8) subtended angle
With design, pre-combustion grade mist of oil state can be made preferable, pre-combustion grade flame reaches stability and high efficiency burning.
Wherein, the pre-combustion grade level-one cyclone swirling number is 0.3-1.2, and pre-combustion grade second cyclone swirling number is
0.2-1.2, the two can be with rotations, can also derotation.
Wherein, the ratio between effective area of pre-combustion grade level-one cyclone and pre-combustion grade second cyclone is between 1:8-9:1,
The ratio between pre-combustion grade totality effective area and main combustion engine effective area are between 1:4-1:10.
Wherein, cooling hole is provided in the interstage section axial direction, number is 10-36, and aperture is 0.5-2mm；In diameter
Pneumatic deflector hole is provided on direction, number is 10-36, and aperture is 0.1-2mm, can be carried out with pre-combustion grade sleeve outer diameter
Matching, influences interstage section recirculating zone, to play the role of stable flame.
The working principle of the invention: this uses the combustion method of center classification, including main combustion stage and pre-burning level structure.
Main combustion stage uses blade open-celled structure, and fuel oil axially sprays, and head burning is sprayed after mixing with air, and is premixed flame, guarantees
It is discharged under big operating condition lower.Pre-combustion grade uses bipolar radial swirler, using diffusion flame, guarantees flame holding and small operating condition
Under ignition performance and efficiency of combustion.In addition, the head uses side-by-side three oil circuits runner, can satisfy under big operating condition,
Pre-combustion grade oil circuit can cool down main combustion stage oil circuit, prevent nozzle coking.Under small operating condition, fuel feeding does not form sky to main combustion stage oil circuit
Chamber can play the role of thermal insulation protection.Also possess heat-insulated cavity in head, play the role of thermal protection.In addition pre-combustion grade uses
Double oil circuits swirl atomizer can satisfy the good atomization under different working condition pressures.The present invention is conducive to combustion chamber not
It with having the performances such as good discharge, flame stabilization under operating condition, can guarantee head thermal protection, prevent nozzle coking, guarantee head
Portion's normal safe operation.
The present invention has the advantage that as follows compared with prior art:
(1) head high reliablity.The head uses side-by-side three oil circuits runner, can satisfy under big operating condition, pre-burning
Grade oil circuit can cool down main combustion stage oil circuit, prevent nozzle coking.Under small operating condition, fuel feeding does not form cavity to main combustion stage oil circuit, can
To play the role of thermal insulation protection.Also possess heat-insulated cavity in head, play the role of thermal protection.
(2) emission performance is excellent.The head uses multiple blade axial direction spray regimes, and fuel oil and air can be made to carry out
Efficiently blending, advantageously reduces discharge.In addition, the double oil circuits swirl atomizer of pre-combustion grade and double-click radial swirler, Venturi tube phase
Matching, it is ensured that flame holding and ignition performance and efficiency of combustion under small operating condition.
(3) process-cycle and low in cost.The head processes in such a way that 3D printing and part machine add, processing week
Phase is shorter, and cost is relatively low.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the blade with cooling structure of the invention sprays low emission combustor head；
Fig. 2 is the trimetric drawing that the blade with cooling structure of the invention sprays low emission combustor head；
Fig. 3 is that the blade with cooling structure of the invention sprays the signal of low emission combustor head three oil circuits fluid domain
Figure, wherein Fig. 3 (a) is positive three axonometric drawings, and Fig. 3 (b) is main view, and Fig. 3 (c) is left view；
Fig. 4 is the interstage section schematic diagram that the blade with cooling structure of the invention sprays low emission combustor head,
In, Fig. 4 (a) is interstage section cross-sectional view, and Fig. 4 (b) is interstage section left view；
Fig. 5 is the Venturi tube schematic diagram that the blade with cooling structure of the invention sprays low emission combustor head,
In, Fig. 5 (a) is Venturi tube left view, and Fig. 5 (b) is Venturi tube cross-sectional view；
Fig. 6 is the pre-combustion grade level-one cyclone that the blade with cooling structure of the invention sprays low emission combustor head
Schematic diagram, wherein Fig. 6 (a) is pre-combustion grade level-one cyclone right view, and Fig. 6 (b) is pre-combustion grade level-one cyclone cross-sectional view；
Fig. 7 is the pre-combustion grade second cyclone that the blade with cooling structure of the invention sprays low emission combustor head
With pre-combustion grade sleeve schematic diagram, wherein Fig. 7 (a) is pre-combustion grade second cyclone and pre-combustion grade sleeve cross-sectional view, Fig. 7 (b) are pre-
Fire grade second cyclone and pre-combustion grade sleeve left view；
Fig. 8 is the pre-combustion grade double oil circuits centrifugation that the blade with cooling structure of the invention sprays low emission combustor head
Nozzle schematic diagram, wherein Fig. 8 (a) is pre-combustion grade double oil circuits swirl atomizer cross-sectional view, and Fig. 8 (b) is the centrifugation spray of pre-combustion grade double oil circuits
Mouth left view；
Fig. 9 is that the blade with cooling structure of the invention sprays the beam hanger on low emission combustor head and head body is shown
It is intended to, wherein Fig. 9 (a) is beam hanger and head body right view, and Fig. 9 (b) is beam hanger and head body cross-sectional view, Fig. 9 (c) are
Beam hanger and head body top view.
In figure: 1 is beam hanger, and 2 be head body, and grade blade is fired based on 3, and grade blade sleeve is fired based on 4, and 5 be interstage section, 6
It is pre-combustion grade second cyclone for pre-combustion grade level-one cyclone, 7,8 be Venturi tube, and 9 be pre-combustion grade sleeve, and 10 be the double oil of pre-combustion grade
Road swirl atomizer, 11 be head body front end, and 12 be head body rear end, and 13 be main combustion stage oil circuit, and 14 be pre-combustion grade working connection,
15 be pre-combustion grade auxiliary oil circuit, and 16 be heat-insulated cavity.
Specific embodiment
With reference to the accompanying drawing and the present invention is discussed in detail in specific embodiment:
As shown in Figure 1, spraying low emission head for a kind of blade with cooling structure described in the embodiment of the present invention, adopt
The combustion method being classified with center and the structure of three oil circuits side by side, mainly by beam hanger 1, head body 2, main combustion stage blade
3, main combustion stage blade sleeve 4, interstage section 5, pre-combustion grade level-one cyclone 6, pre-combustion grade second cyclone 7, Venturi tube 8, pre-combustion grade
Sleeve 9, pre-combustion grade double oil circuits swirl atomizer 10 etc. are constituted.Wherein beam hanger 1 and head body 2 can be integrally formed by 3D printing,
Wherein head body 2 includes head body front end 11 and head body rear end 12.Main combustion stage blade 3 and head body 2 3D together
Printing is completed, and is provided with main combustion stage oilhole on each blade axial position, for spraying fuel oil, is blended with air.Main combustion
It grade blade sleeve 4 and covers outer in main combustion stage blade 3 and is welded.Interstage section 5 is used to that pre-combustion grade and main combustion stage flame to be isolated,
Outer diameter has screw thread, can be threadedly coupled with head body 2；Its internal diameter also has screw thread, can carry out with pre-combustion grade sleeve 9
Connection.Pre-combustion grade level-one cyclone 6 and pre-combustion grade second cyclone 7 are radially slotted air admission type cyclone, and the two can be with text
Family name's pipe 8 welds together.Furthermore pre-combustion grade second cyclone 7 can be welded with pre-combustion grade sleeve 9, so that it is whole to form pre-combustion grade
Body, then be threadedly coupled with interstage section 5, head body 2, constitute entire head.
In addition, in head body 2, including but not limited to one or more heat-insulated cavities 16 are possessed, heat can be played to oil circuit
The effect of protection.
As shown in Fig. 2, beam hanger 1 and head body 2 are integrally formed by 3D printing technique.Main combustion stage blade 3, blade number are
12-36, angle is 15 °-60 °, and vane thickness is 0.8-2mm, and swirling number is 0.5-1.2kg/ (hr*Mpa^0.5).?
Nozzle opening is provided on the axial direction of each blade, oilhole diameter is 0.2-1.5mm, and total flow number is 60-180, can be made
Fuel oil and air are sufficiently blended, the discharge of contaminant reducing.
As shown in figure 3, possessing side-by-side three oil circuits inside head.Wherein 13 valid circulation area of main combustion stage oil circuit exists
10mm2—80mm2Between, main combustion stage oil enters head body 2 from beam hanger 1, and circumferentially turns around in head body front end 11
Afterwards, it is sprayed by aperture on each blade.Pre-combustion grade double oil circuits include pre-combustion grade working connection 14 and pre-combustion grade auxiliary oil circuit 15, the two point
Main combustion stage oil circuit two sides are distributed in, thermal protection is played the role of.Wherein 14 valid circulation area of pre-combustion grade working connection is in 5mm2—50mm2
Between, 15 valid circulation area of pre-combustion grade auxiliary oil circuit is in 1mm2—30mm2Between.The two-way oil stream of pre-combustion grade enters head through beam hanger 1
Portion's main body 2, after being turned around in the circumferential in head body front end 11 around main combustion stage oil circuit 13, into head body rear end 12
And enter pre-combustion grade double oil circuits swirl atomizer 10, it is sprayed.
As shown in figure 4, being provided with cooling hole in 5 axial direction of interstage section, number is 10-36, and aperture is 0.5-2mm；In diameter
Be provided with pneumatic deflector hole on direction, number is 10-36, and aperture is 0.1-2mm, can with 9 outer diameter of pre-combustion grade sleeve into
Row matching, influences interstage section recirculating zone, to play the role of stable flame.
As shown in figure 5, it is 20-70 ° that Venturi tube 8, which exports subtended angle, with pre-combustion grade level-one cyclone 6 and pre-combustion grade second level
Cyclone 7 is welded.
As shown in Figure 6 and Fig. 7,6 swirling number of pre-combustion grade level-one cyclone are 0.3-1.2, and pre-combustion grade second cyclone 7 revolves
Fluxion is 0.2-1.2, and the two can be with rotation, can also derotation.The outlet subtended angle of pre-combustion grade sleeve 9 is 10 ° -60 °, can make pre-combustion grade
Mist of oil state is preferable, and pre-combustion grade flame reaches stability and high efficiency burning.
As shown in figure 8, pre-combustion grade double oil circuits swirl atomizer 10, is threadingly attached to 2 center of head body, and and Wen
Pipe 8 cooperates, and reaches good atomization, combustion efficiency.The small oil circuit nozzle of pre-combustion grade double oil circuits swirl atomizer 10, flow number are
5-30kg/ (hr*Mpa^0.5), big oil circuit nozzle flow number are 10-100kg/ (hr*Mpa^0.5).Pre-combustion grade double oil circuits from
It is 30-120 ° that heart nozzle 10, which sprays mist of oil subtended angle,.
As shown in figure 9, main combustion stage beam hanger 1 and head body 2 and main combustion stage blade 3 etc. can pass through 3D printing technique one
It is body formed.
Claims (9)
1. a kind of blade with cooling structure sprays low emission combustor head, it is characterised in that: using center classification
Combustion method, blade spray fuel oil and the side by side structure of three oil circuits, mainly by beam hanger (1), head body (2), main combustion stage
Blade (3), main combustion stage blade sleeve (4), interstage section (5), pre-combustion grade level-one cyclone (6), pre-combustion grade second cyclone (7),
Venturi tube (8), pre-combustion grade sleeve (9), pre-combustion grade double oil circuits swirl atomizer (10) are constituted, wherein beam hanger (1) and head body (2)
It is integrally formed by 3D printing, wherein head body (2) includes head body front end (11) and head body rear end (12), main combustion stage
3D printing is completed together for blade (3) and head body (2), main combustion stage oilhole is provided on each blade axial position, for spraying
Fuel oil is penetrated, is blended with air, main combustion stage blade sleeve (4) is covered outside and to be welded, interstage section in main combustion stage blade (3)
(5) for pre-combustion grade and main combustion stage flame to be isolated, there is the outer diameter of interstage section (5) screw thread and head body (2) to carry out screw thread company
It connects；The internal diameter of interstage section (5) also has screw thread, is attached with pre-combustion grade sleeve (9), pre-combustion grade level-one cyclone (6) and pre-
Firing grade second cyclone (7) is radially slotted air admission type cyclone, and the two welds together with Venturi tube (8), and pre-combustion grade two
Grade cyclone (7) is welded with pre-combustion grade sleeve (9), so that it is whole to form pre-combustion grade, then with interstage section (5), head body
Front end (11) is threadedly coupled, and entire head is constituted.
2. a kind of blade with cooling structure according to claim 1 sprays low emission combustor head, feature exists
In: both the beam hanger (1) and head body (2) whole interior possess side-by-side three oil circuits, wherein main combustion stage oil circuit (13)
Valid circulation area is between 10mm2-80mm2, and main combustion stage oil enters head body (2) from beam hanger (1), and in head body
After circumferentially turning around in front end (11), sprayed into each blade, then by aperture on each blade, pre-combustion grade double oil circuits include
Pre-combustion grade working connection (14) and pre-combustion grade auxiliary oil circuit (15), the two are distributed in main combustion stage oil circuit two sides, play the role of thermal protection,
Middle pre-combustion grade working connection (14) valid circulation area is between 50 mm2 of 5mm2-, pre-combustion grade auxiliary oil circuit (15) valid circulation area
Between 30 mm2 of 1mm2-, the two-way oil stream of pre-combustion grade enters head body (2) through beam hanger (1), in head body front end
(11) after being turned around in the circumferential in around main combustion stage oil circuit (13), into head body rear end (12) and enter the double oil of pre-combustion grade
Road swirl atomizer (10), is sprayed.
3. a kind of blade with cooling structure according to claim 1 sprays low emission combustor head, feature exists
In: in the head body (2), includes one or more heat-insulated cavities (16), play the role of thermal protection to oil circuit.
4. a kind of blade with cooling structure according to claim 1 sprays low emission combustor head, feature exists
In: the main combustion stage blade (3), blade number are 12-36, and angle is 15 °-60 °, and vane thickness is 0.8-2mm,
Swirling number is 0.5-1.2, and nozzle opening is provided on the axial direction of each blade, and oilhole diameter is 0.2-1.5mm, total flow
Number is 60-180 kg/ (hr*Mpa^0.5), and fuel oil and air can be made sufficiently to be blended, the discharge of pollutant is reduced.
5. a kind of blade with cooling structure according to claim 1 sprays low emission combustor head, feature exists
In the pre-combustion grade double oil circuits swirl atomizer (10), be threadingly attached to head body (2) center, and with Venturi tube (8)
Cooperation, reaches good atomization, combustion efficiency, the small oil circuit nozzle of pre-combustion grade double oil circuits swirl atomizer (10), and flow number is 5-
30 kg/ (hr*Mpa^0.5), big oil circuit nozzle flow number are 10-100 kg/ (hr*Mpa^0.5), the centrifugation of pre-combustion grade double oil circuits
It is 30 ° -120 ° that nozzle (10), which sprays mist of oil subtended angle, and it is 20 ° -70 ° that Venturi tube (8), which exports subtended angle,.
6. a kind of blade with cooling structure according to claim 1 sprays low emission combustor head, feature exists
In: the outlet subtended angle of pre-combustion grade sleeve (9) is 10 ° -60 °, and subtended angle and Venturi tube (8) subtended angle carry out matched design, makes pre-burning
Grade mist of oil state is preferable, and pre-combustion grade flame reaches stability and high efficiency burning.
7. a kind of blade with cooling structure according to claim 1 sprays low emission combustor head, feature exists
It is 0.3-1.2 in: pre-combustion grade level-one cyclone (6) swirling number, pre-combustion grade second cyclone (7) swirling number is 0.2-1.2, two
Person is the same as rotation or derotation.
8. a kind of blade with cooling structure according to claim 1 sprays low emission combustor head, feature exists
In: the ratio between effective area of pre-combustion grade level-one cyclone (6) and pre-combustion grade second cyclone (7) is between 1:8-9:1, pre-burning
Grade overall the ratio between effective area and main combustion engine effective area are between 1:4-1:10.
9. a kind of blade with cooling structure according to claim 1 sprays low emission combustor head, feature exists
In: cooling hole is provided in interstage section (5) axial direction, number is 10-36, and aperture is 0.5-2mm；It is provided with gas in radial directions
Dynamic deflector hole, number are 10-36, and aperture is 0.1-2mm, can be matched with pre-combustion grade sleeve (9) outer diameter, between grade
Section recirculating zone is influenced, to play the role of stable flame.
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| CN201710838822.0A CN107741030B (en) | 2017-09-18 | 2017-09-18 | A kind of blade injection low emission combustor head with cooling structure |
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| CN201710838822.0A CN107741030B (en) | 2017-09-18 | 2017-09-18 | A kind of blade injection low emission combustor head with cooling structure |
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| JP2021162184A (en) * | 2020-03-31 | 2021-10-11 | 三菱パワー株式会社 | Gas turbine combustor and method for manufacturing fuel nozzle |
| CN112050253B (en) * | 2020-09-18 | 2022-04-22 | 中国航发四川燃气涡轮研究院 | Multiple thermal-insulated fuel nozzle |
| CN114753932B (en) * | 2021-01-08 | 2024-07-26 | 中国航发商用航空发动机有限责任公司 | Oil collecting ring, fuel nozzle, combustion chamber, gas turbine engine, and heat protection method |
| CN114526498B (en) * | 2022-04-21 | 2022-07-08 | 成都中科翼能科技有限公司 | Single-inlet double-oil-way composite atomizing nozzle |
| CN115307178B (en) * | 2022-07-26 | 2023-06-23 | 北京航空航天大学 | Low emission combustor head scheme with interstage stage enhanced cooling |
| CN115342385B (en) * | 2022-07-27 | 2023-06-23 | 北京航空航天大学 | Weak internal-rotation two-stage axial precombustion stage central staged combustion chamber |
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| CN105202580A (en) * | 2015-10-16 | 2015-12-30 | 北京航空航天大学 | Low-pollution combustion chamber adopting forced diversion at primary combustion stage outlet |
| CN106066048A (en) * | 2015-04-21 | 2016-11-02 | 通用电气公司 | Premix guides nozzle |
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| CN101206029A (en) * | 2006-12-21 | 2008-06-25 | 中国科学院工程热物理研究所 | Nozzle for minisize gas-turbine combustor |
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| CN102901127A (en) * | 2012-09-11 | 2013-01-30 | 北京航空航天大学 | Premixing pre-evaporation low-pollution combustion chamber for main-combustion-stage double-layer pre-film three-cyclone |
| CN106066048A (en) * | 2015-04-21 | 2016-11-02 | 通用电气公司 | Premix guides nozzle |
| CN105202580A (en) * | 2015-10-16 | 2015-12-30 | 北京航空航天大学 | Low-pollution combustion chamber adopting forced diversion at primary combustion stage outlet |
| CN105157062A (en) * | 2015-10-19 | 2015-12-16 | 北京航空航天大学 | Low-emission combustion chamber with double-layer axial hydrocyclone adopted at precombustion stage |
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