CN107741030A - 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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- CN107741030A CN107741030A CN201710838822.0A CN201710838822A CN107741030A CN 107741030 A CN107741030 A CN 107741030A CN 201710838822 A CN201710838822 A CN 201710838822A CN 107741030 A CN107741030 A CN 107741030A
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- combustion
- combustion grade
- blade
- head
- oil circuit
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Classifications
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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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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a kind of blade injection low emission combustor head with cooling structure, the head uses the combustion method of center classification, mainly includes main combustion stage and pre-combustion grade.Main combustion stage uses blade open-celled structure, and fuel oil axially sprays, and is premixed flame, ensures to discharge under big operating mode relatively low.Pre-combustion grade uses bipolar radial swirler, is diffusion flame, ensures flame stabilization and small operating mode down-firing performance.In addition, the head employs the oil circuit runner of side-by-side three, can meet under big operating mode, pre-combustion grade oil circuit can cool down main combustion stage oil circuit, prevent nozzle coking.Under small operating mode, fuel feeding does not form cavity to main combustion stage oil circuit, can play a part of thermal insulation protection.In addition, pre-combustion grade can meet good atomization under different operating modes using double oil circuit swirl atomizers.The present invention can ensure head thermal protection, prevent nozzle coking, ensure head normal safe operation, and be advantageous to combustion chamber has the performances such as good discharge, flame stabilization under different operating modes.
Description
Technical field
The present invention relates to the technical field on low emission combustor head, it is more particularly to a kind of there is cooling structure, can be to prevent
Nozzle deposit carbon, the low emission combustor head sprayed by blade.
Background technology
The Main Trends of The Development of civil aviation modern times civil engine combustion chamber is combustion with reduced pollutants.With international day
The strict boat hair discharge standard of benefit, civil engine combustion chamber must is fulfilled for new discharge standard.The CAEP6 used at present
(Committee on Aviation Environmental Protection) standard is non-to the regulation of pollutant effulent
Chang Yange, particularly NOx emission requirements；And newest CAEP8 standards are proposed the NOx discharge for being emitted on CAEP6
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
Higher requirement can be proposed by burning chamber contamination discharge.
Except 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, in order to prevent its thermal deformation and nozzle overheat carbon distribution, it is necessary to which head carries out thermal protection.
In summary, 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 the oil channel structures of side-by-side three, and can all be played under different operating modes prevents fuel oil overheat from spraying
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 can be made to carry out good blending with air, so as to improve efficiency of combustion, reduce the discharge of pollutant.
The content of the invention
The technical problem to be solved in the present invention is：For aero engine emissions standard increasingly strict in the world, use
Axial injection mode on blade, there is provided a kind of head of combustion chamber that can reduce discharge, and it is directed to aeroengine combustor buring chamber-head
The high temperature and high pressure environment of portion's work, using the oil channel structures of side-by-side three, gives full play to the cooling pre-combustion grade oil circuit under different operating modes
Function, prevent nozzle deposit carbon.And insulated cavity is applied in head, prevent oil circuit overheat so as to carbon distribution.
The technical solution adopted by the present invention is：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 one-level cyclone, pre-combustion grade second cyclone, Venturi tube, pre-combustion grade sleeve, pre-
Fire the double oil circuit swirl atomizers of level to form, wherein beam hanger and head body can be integrally formed by 3D printing, wherein head body bag
Head body front end and head body rear end are included, 3D printing is completed together for main combustion stage blade and head body, each blade axial direction
Main combustion stage oilhole is all provided with position, for spraying fuel oil, is blended with air, main combustion stage blade sleeve is enclosed on main combustion stage leaf
Piece is outer and is welded, and interstage section is used to isolate pre-combustion grade and main combustion stage flame, and its external diameter has screw thread, 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 one-level cyclone and pre-combustion grade
Second cyclone is radially slotted air admission type cyclone, and both can weld together with Venturi tube.In addition pre-combustion grade two level is revolved
Stream device can be welded with pre-combustion grade sleeve, overall so as to form pre-combustion grade, then carry out screw thread with interstage section, head body front end
Connection, forms whole head.
Wherein, described beam hanger and head body are integrally formed by 3D printing technique, and both possess side-by-side at whole interior
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 being turned 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 both are distributed in main combustion stage oil circuit both sides, plays thermal protection effect.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 being turned around in circumference, into head body rear end and enter the double oil circuit swirl atomizers of pre-combustion grade, sprayed.
Wherein, in described head body, including but not limited to one or more heat-insulated cavity volumes are possessed, oil circuit can be risen
To the effect of thermal protection.
Wherein, described 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.It is provided with nozzle opening on the axial direction of each blade, oilhole a diameter of 0.2-
1.5mm, total flow number are 60-180kg/ (hr*Mpa^0.5), and fuel oil and air can be made fully to be blended, can reduce dirt
Contaminate the discharge of thing.
Wherein, the double oil circuit swirl atomizers of described pre-combustion grade, are threadingly attached to head body center, and and Venturi tube
Coordinate, reach good atomization, combustion efficiency.The small oil circuit nozzle of the double oil circuit swirl atomizers of pre-combustion grade, flow number is 5-
30kg/ (hr*Mpa^0.5), big oil circuit nozzle flow number are 10-100kg/ (hr*Mpa^0.5).The double oil circuit centrifugation sprays of pre-combustion grade
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 described pre-combustion grade sleeve is 10 ° -60 °, its 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, described pre-combustion grade one-level cyclone swirling number is 0.3-1.2, and pre-combustion grade second cyclone swirling number is
0.2-1.2, both can be with rotation, also can derotation.
Wherein, the ratio between effective area of pre-combustion grade one-level cyclone and pre-combustion grade second cyclone is 1：8—9：Between 1,
The ratio between pre-combustion grade totality effective area and main combustion engine effective area are located at 1：4—1：Between 10.
Wherein, Cooling Holes are provided with described interstage section axial direction, number is 10-36, and aperture is 0.5-2mm；In footpath
Pneumatic pod apertures are provided with to direction, number is 10-36, and aperture is 0.1-2mm, can be carried out with pre-combustion grade sleeve outer diameter
Matching, influences on interstage section recirculating zone, so as to play a part of stable flame.
The operation principle of the present 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 being mixed with air, is premixed flame, is ensured
Discharged under big operating mode relatively low.Pre-combustion grade uses bipolar radial swirler, using diffusion flame, ensures flame holding and small operating mode
Under ignition performance and efficiency of combustion.In addition, the head employs the oil circuit runner of side-by-side three, can meet under big operating mode,
Pre-combustion grade oil circuit can cool down main combustion stage oil circuit, prevent nozzle coking.Under small operating mode, fuel feeding does not form sky to main combustion stage oil circuit
Chamber, thermal insulation protection can be played a part of.Also possess heat-insulated cavity volume in head, play thermal protection effect.Other pre-combustion grade uses
Double oil circuit swirl atomizers, can meet good atomization under different working condition pressures.The present invention is advantageous to combustion chamber not
With having the performances such as good discharge, flame stabilization under operating mode, head thermal protection can be ensured, prevent nozzle coking, ensure head
Portion's normal safe operation.
The present invention has the advantage that as follows compared with prior art：
(1) head reliability is high.The head employs the oil circuit runner of side-by-side three, can meet under big operating mode, pre-burning
Level oil circuit can cool down main combustion stage oil circuit, prevent nozzle coking.Under small operating mode, fuel feeding does not form cavity to main combustion stage oil circuit, can
To play a part of thermal insulation protection.Also possess heat-insulated cavity volume in head, play thermal protection effect.
(2) discharge performance is excellent.The head uses multiple blade axial directions spray regime, and fuel oil can be caused to be carried out with air
Efficiently blending, advantageously reduces discharge.In addition, double oil circuit swirl atomizers of pre-combustion grade are with double-clicking radial swirler, Venturi tube phase
Matching, it is ensured that flame holding and ignition performance and efficiency of combustion under small operating mode.
(3) process-cycle and cost are cheap.The head processes by the way of 3D printing and part machine add, processing week
Phase is shorter, and cost is relatively low.
Brief description of the drawings
Fig. 1 is that the blade with cooling structure of the present invention sprays the structural representation on low emission combustor head；
Fig. 2 is that the blade with cooling structure of the present invention sprays the trimetric drawing on low emission combustor head；
The blade with cooling structure that Fig. 3 is the present invention sprays the oil circuit fluid domain signal of low emission combustor head three
Figure, wherein, Fig. 3 (a) is positive three axonometric drawing, and Fig. 3 (b) is front view, and Fig. 3 (c) is left view；
Fig. 4 is that the blade with cooling structure of the present invention sprays the interstage section schematic diagram on low emission combustor head, its
In, Fig. 4 (a) is interstage section sectional view, and Fig. 4 (b) is interstage section left view；
Fig. 5 is that the blade with cooling structure of the present invention sprays the Venturi tube schematic diagram on low emission combustor head, its
In, Fig. 5 (a) is Venturi tube left view, and Fig. 5 (b) is Venturi tube sectional view；
Fig. 6 is that the blade with cooling structure of the present invention sprays the pre-combustion grade one-level cyclone on low emission combustor head
Schematic diagram, wherein, Fig. 6 (a) is pre-combustion grade one-level cyclone right view, and Fig. 6 (b) is pre-combustion grade one-level cyclone sectional view；
Fig. 7 is that the blade with cooling structure of the present invention sprays the pre-combustion grade second cyclone on low emission combustor head
With pre-combustion grade sleeve schematic diagram, wherein, Fig. 7 (a) is that pre-combustion grade second cyclone and pre-combustion grade sleeve sectional view, Fig. 7 (b) are pre-
Fire level second cyclone and pre-combustion grade sleeve left view；
Fig. 8 is that the blade with cooling structure of the present invention sprays the double oil circuit centrifugations of pre-combustion grade on low emission combustor head
Nozzle schematic diagram, wherein, Fig. 8 (a) is the double oil circuit swirl atomizer sectional views of pre-combustion grade, and Fig. 8 (b) is the double oil circuit centrifugation sprays of pre-combustion grade
Mouth left view；
The blade with cooling structure that Fig. 9 is the present 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 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 one-level 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 volume.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is discussed in detail in 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
3rd, main combustion stage blade sleeve 4, interstage section 5, pre-combustion grade one-level cyclone 6, pre-combustion grade second cyclone 7, Venturi tube 8, pre-combustion grade
Double oil circuit swirl atomizers 10 of sleeve 9, pre-combustion grade etc. are formed.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 location, for spraying fuel oil, is blended with air.Main combustion
Grade blade sleeve 4 and to be enclosed on main combustion stage blade 3 outer and welded.Interstage section 5 is used to isolate pre-combustion grade and main combustion stage flame, its
External diameter has screw thread, can be threadedly coupled with head body 2；Its internal diameter also has screw thread, can be carried out with pre-combustion grade sleeve 9
Connection.Pre-combustion grade one-level cyclone 6 and pre-combustion grade second cyclone 7 are radially slotted air admission type cyclone, and both can be with text
Family name's pipe 8 welds together.In addition pre-combustion grade second cyclone 7 can be welded with pre-combustion grade sleeve 9, whole so as to form pre-combustion grade
Body, then be threadedly coupled with interstage section 5, head body 2, form whole head.
In addition, in head body 2, including but not limited to one or more heat-insulated cavity volumes 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, a diameter of 0.2-1.5mm of oilhole are provided with the axial direction of each blade, total flow number is 60-180, can be made
Fuel oil and air are fully blended, the discharge of contaminant reducing.
As shown in figure 3, possess the oil circuit of side-by-side three inside head.The wherein valid circulation area of main combustion stage oil circuit 13 exists
10mm2—80mm2Between, main combustion stage oil enters head body 2 from beam hanger 1, and is circumferentially turned around in head body front end 11
Afterwards, sprayed by aperture on each blade.The double oil circuits of pre-combustion grade include pre-combustion grade working connection 14 and pre-combustion grade auxiliary oil circuit 15, Liang Zhefen
Main combustion stage oil circuit both sides are distributed in, play thermal protection effect.The wherein valid circulation area of pre-combustion grade working connection 14 is in 5mm2—50mm2
Between, the valid circulation area of pre-combustion grade auxiliary oil circuit 15 is in 1mm2—30mm2Between.The two-way oil stream of pre-combustion grade enters head through beam hanger 1
Portion's main body 2, in head body front end 11 after main combustion stage oil circuit 13 turns around in the circumferential, into head body rear end 12
And enter the double oil circuit swirl atomizers 10 of pre-combustion grade, sprayed.
As shown in figure 4, being provided with Cooling Holes on the axial direction of interstage section 5, number is 10-36, and aperture is 0.5-2mm；In footpath
Pneumatic pod apertures are provided with to direction, number is 10-36, and aperture is 0.1-2mm, can be entered with the external diameter of pre-combustion grade sleeve 9
Row matching, influences on interstage section recirculating zone, so as to play a part of stable flame.
As shown in figure 5, it is 20-70 ° that Venturi tube 8, which exports subtended angle, with pre-combustion grade one-level cyclone 6 and pre-combustion grade two level
Cyclone 7 is welded.
As shown in Figure 6 and Fig. 7, the swirling number of pre-combustion grade one-level cyclone 6 are 0.3-1.2, and pre-combustion grade second cyclone 7 revolves
Fluxion is 0.2-1.2, and both can be with rotation, also can 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, the double oil circuit swirl atomizers 10 of pre-combustion grade, are threadingly attached to the center of head body 2, and and Wen
Pipe 8 coordinates, and reaches good atomization, combustion efficiency.The small oil circuit nozzle of the double oil circuit swirl atomizers 10 of pre-combustion grade, flow number are
5-30kg/ (hr*Mpa^0.5), big oil circuit nozzle flow number are 10-100kg/ (hr*Mpa^0.5).The double oil circuits of pre-combustion grade 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)
- A kind of 1. blade injection low emission combustor head with cooling structure, it is characterised in that：Employ 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 one-level cyclone (6), pre-combustion grade second cyclone (7), The double oil circuit swirl atomizers (10) of Venturi tube (8), pre-combustion grade sleeve (9), pre-combustion grade are formed, wherein beam hanger (1) and head body (2) It can be integrally formed by 3D printing, wherein head body (2) includes head body front end (11) and head body rear end (12), main Firing grade blade (3) and head body (2), 3D printing is completed together, is provided with main combustion stage oilhole on each blade axial location, is used In injection fuel oil, blended with air, main combustion stage blade sleeve (4) is enclosed on main combustion stage blade (3) outside and welded, between level Section (5) is used to isolate pre-combustion grade and main combustion stage flame, and its external diameter has screw thread, can be threadedly coupled with head body (2)； The internal diameter of interstage section (5) also has screw thread, can be attached with pre-combustion grade sleeve (9), pre-combustion grade one-level cyclone (6) and pre-burning Level second cyclone (7) is radially slotted air admission type cyclone, and both can weld together with Venturi tube (8), and pre-combustion grade Second cyclone (7) can be welded with pre-combustion grade sleeve (9), so as to formed pre-combustion grade entirety, then with interstage section (5), head Body front end (11) is threadedly coupled, and forms whole head.
- 2. a kind of blade injection low emission combustor head with cooling structure according to claim 1, its feature exist In：Described beam hanger (1) and head body (2) is integrally formed by 3D printing technique, and both whole interiors possess the oil of side-by-side three Road, wherein main combustion stage oil circuit (13) valid circulation area is in 10mm2—80mm2Between, main combustion stage oil enters head from beam hanger (1) Main body (2), and after circumferentially being turned around in head body front end (11), into each blade, then by aperture on each blade Spray, the double oil circuits of pre-combustion grade include pre-combustion grade working connection (14) and pre-combustion grade auxiliary oil circuit (15), and both are distributed in main combustion stage oil circuit Both sides, thermal protection effect is played, wherein pre-combustion grade working connection (14) valid circulation area is in 5mm2—50mm2Between, pre-combustion grade pair Oil circuit (15) valid circulation area is in 1mm2—30mm2Between, the two-way oil stream of pre-combustion grade enters head body through beam hanger (1) (2), in head body front end (11) after main combustion stage oil circuit (13) turns around in the circumferential, into head body rear end (12) and enter the double oil circuit swirl atomizers (10) of pre-combustion grade, sprayed.
- 3. a kind of blade injection low emission combustor head with cooling structure according to claim 1, its feature exist In：In described head body (2), including but not limited to one or more heat-insulated cavity volumes (16) are possessed, heat can be played to oil circuit The effect of protection.
- 4. a kind of blade injection low emission combustor head with cooling structure according to claim 1, its feature exist In：Described 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, a diameter of 0.2-1.5mm of oilhole, total flow are provided with the axial direction of each blade Number is 60-180kg/ (hr*Mpa^0.5), fuel oil and air can be made fully to be blended, the discharge of contaminant reducing.
- 5. a kind of blade injection low emission combustor head with cooling structure according to claim 1, its feature exist In：The double oil circuit swirl atomizers (10) of described pre-combustion grade, are threadingly attached to head body (2) center, and with Venturi tube (8) Coordinating, reach good atomization, combustion efficiency, the small oil circuit nozzle of the double oil circuit swirl atomizers (10) of pre-combustion grade, flow number is 5- 30kg/ (hr*Mpa^0.5), big oil circuit nozzle flow number are 10-100kg/ (hr*Mpa^0.5), and the double oil circuit centrifugations of pre-combustion grade are sprayed It is 30-120 ° that mouth (10), which sprays mist of oil subtended angle, and Venturi tube (8) outlet subtended angle is 20-70 °.
- 6. a kind of blade injection low emission combustor head with cooling structure according to claim 1, its feature exist In：The outlet subtended angle of pre-combustion grade sleeve (9) is 10 ° -60 °, and its subtended angle carries out matched design with Venturi tube (8) subtended angle, can make pre- It is preferable to fire level mist of oil state, pre-combustion grade flame reaches stability and high efficiency burning.
- 7. a kind of blade injection low emission combustor head with cooling structure according to claim 1, its feature exist In：Pre-combustion grade one-level cyclone (6) swirling number is 0.3-1.2, and pre-combustion grade second cyclone (7) swirling number is 0.2-1.2, two Person can be with rotation, also can derotation.
- 8. a kind of blade injection low emission combustor head with cooling structure according to claim 1, its feature exist In：The ratio between effective area of pre-combustion grade one-level cyclone (6) and pre-combustion grade second cyclone (7) is 1：8—9：Between 1, pre-burning Level the ratio between overall effective area and main combustion engine effective area are located at 1：4—1：Between 10.
- 9. a kind of blade injection low emission combustor head with cooling structure according to claim 1, its feature exist In：Cooling Holes are provided with interstage section (5) axial direction, number is 10-36, and aperture is 0.5-2mm；Gas is provided with radial directions Dynamic pod apertures, number are 10-36, and aperture is 0.1-2mm, can be matched with pre-combustion grade sleeve (9) external diameter, level Section recirculating zone is influenceed, so as to play a part 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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112050253A (en) * | 2020-09-18 | 2020-12-08 | 中国航发四川燃气涡轮研究院 | Multiple thermal-insulated fuel nozzle |
| CN113531585A (en) * | 2020-03-31 | 2021-10-22 | 三菱动力株式会社 | Gas turbine combustor and method for manufacturing fuel nozzle |
| CN114526498A (en) * | 2022-04-21 | 2022-05-24 | 成都中科翼能科技有限公司 | Single-inlet double-oil-way composite atomizing nozzle |
| CN114753932A (en) * | 2021-01-08 | 2022-07-15 | 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 thermal protection method |
| CN115307178A (en) * | 2022-07-26 | 2022-11-08 | 北京航空航天大学 | Low emission combustor head design with stage section enhanced cooling |
| CN115342385A (en) * | 2022-07-27 | 2022-11-15 | 北京航空航天大学 | Weak internal rotational flow two-stage axial precombustion stage central staged combustion chamber |
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| CN113531585A (en) * | 2020-03-31 | 2021-10-22 | 三菱动力株式会社 | Gas turbine combustor and method for manufacturing fuel nozzle |
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| CN114753932A (en) * | 2021-01-08 | 2022-07-15 | 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 thermal protection method |
| CN114526498A (en) * | 2022-04-21 | 2022-05-24 | 成都中科翼能科技有限公司 | Single-inlet double-oil-way composite atomizing nozzle |
| CN115307178A (en) * | 2022-07-26 | 2022-11-08 | 北京航空航天大学 | Low emission combustor head design with stage section enhanced cooling |
| 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 |
| CN115342385A (en) * | 2022-07-27 | 2022-11-15 | 北京航空航天大学 | Weak internal rotational flow two-stage axial precombustion stage central staged combustion chamber |
| 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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