CN113701191B - Staggered flow guide middle seam type V-shaped flame stabilizer - Google Patents
Staggered flow guide middle seam type V-shaped flame stabilizer Download PDFInfo
- Publication number
- CN113701191B CN113701191B CN202111019514.8A CN202111019514A CN113701191B CN 113701191 B CN113701191 B CN 113701191B CN 202111019514 A CN202111019514 A CN 202111019514A CN 113701191 B CN113701191 B CN 113701191B
- Authority
- CN
- China
- Prior art keywords
- shaped
- flame stabilizer
- flow guide
- partition plate
- staggered flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- F23R3/30—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply comprising fuel prevapourising devices
-
- 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
- F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
-
- 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
- F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
- F23R3/58—Cyclone or vortex type combustion chambers
-
- 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
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/03045—Convection cooled combustion chamber walls provided with turbolators or means for creating turbulences to increase cooling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to a staggered flow guide middle seam type V-shaped flame stabilizer which mainly comprises a partition plate, V-shaped surfaces, staggered flow guide middle seams, partition plates and lightening holes, wherein the V-shaped surfaces are connected behind the partition plate, the staggered flow guide middle seams are arranged on the V-shaped surfaces, the partition plates are arranged on two sides of each hole of the staggered flow guide middle seams and are perpendicular to the V-shaped surfaces, and the lightening holes are arranged on the partition plates. The advantages and the obtained beneficial effects of the invention are as follows: the V-shaped flame stabilizer with the staggered flow guide middle seam has the advantages of good flame stability, high flame propagation speed, small flow resistance loss and high combustion efficiency.
Description
Technical Field
The invention relates to a staggered flow guide middle seam type V-shaped flame stabilizer which can be used for an integrated afterburner of an aircraft engine with a high thrust-weight ratio and belongs to the technical field of aviation.
Background
The new generation of afterburning turbofan engine pursues high thrust-weight ratio, and in the aspect of afterburning chambers, the engine requires concise parts, low cold flow resistance loss, small afterburning section length ratio and high afterburning efficiency. The afterburner adopts a flame stabilizer to stabilize flame tissue combustion, and the performance of the flame stabilizer is a decisive influence factor of the performance of the afterburner. Most of the new generation of afterburners adopt an integrated afterburner with a rectification support plate and a flame stabilizer which are integrally designed.
The general integrated afterburner is suitable for afterburners with a bypass ratio of about 0.2-0.3. For an afterburner turbofan engine with a bypass ratio of about 0.5-0.6, the general integrated afterburner cannot fully utilize non-gas flow of an outer bypass, unstable combustion is caused, and the overall combustion efficiency of the afterburner is low.
Disclosure of Invention
The invention aims to provide a staggered flow guide middle seam type V-shaped flame stabilizer, wherein staggered flow guide holes are formed in two sides of the front part of the V-shaped flame stabilizer, so that the flame stability and the flame propagation speed are improved, the flow resistance loss is reduced, and the combustion efficiency is increased.
The invention is realized by the following technical scheme.
A staggered flow guide middle seam type V-shaped flame stabilizer mainly comprises a partition plate, a V-shaped surface, a staggered flow guide middle seam, a partition plate and lightening holes, wherein the partition plate can be regarded as an internal and external culvert annular mixer, the V-shaped surface is connected behind the partition plate, the staggered flow guide middle seam is arranged on the V-shaped surface, the partition plate is arranged on two sides of each hole of the staggered flow guide middle seam and perpendicular to the V-shaped surface, and the lightening holes are arranged on the partition plate.
Further, the V-shaped surface has the spread length determined by a specific engine, the wall thickness of 0.8-1.5 mm, the width of 33-39 mm and the included angle of 36-50 degrees.
Furthermore, the staggered flow guide middle seam is composed of rectangular holes, 13-21 holes and 14-22 holes are formed in the two sides of the whole spanwise direction respectively, and the length of an orifice on an orifice plane is 9-12 mm.
Furthermore, the wall thickness of the partition plate is 0.8-1.2 mm, two front edges of the partition plate are overlapped and connected with two inner wall surfaces of the V-shaped surface, the rear edge of the partition plate is arc-shaped, and the radius of the arc is 12-15 mm.
Furthermore, the shape of the lightening hole is that two front edges of the partition plate are inwards deviated by 1.25-1.75 mm, the rear edge is inwards deviated by 2.5-3.5 mm, and then the partition plate is chamfered at 3 sharp corners, wherein the radius of each fillet is 3-4 mm.
Compared with the prior art, the invention has the advantages that:
first, flame stability is good. For the boost turbofan engine with the bypass ratio of about 0.5-0.6, a general V-shaped flame stabilizer is arranged behind an internal bypass annular mixer and an external bypass annular mixer, the V-shaped flame stabilizer generates a Karman vortex street type backflow vortex, the stability of the backflow vortex is poor, the temperature of unburnt airflow of the external bypass is low, fuel evaporation and flame propagation are not facilitated, and flameout is easily caused. The staggered flow guiding slit type V-shaped flame stabilizer is arranged at the position of the inner-culvert annular mixer and the outer-culvert annular mixer, K-H type backflow vortex is generated, the stability of the backflow vortex is good, the staggered flow guiding slit guides part of inner-culvert high-temperature airflow to the outer culvert, after the mixture of the inner-culvert high-temperature airflow and outer-culvert low-temperature unburned airflow is mixed, part of the mixture flows downstream after flowing back to the flame stabilizer, and simultaneously part of the mixture flows downstream after guiding part of outer-culvert low-temperature unburned airflow to the inner culvert, and after the mixture of the inner-culvert high-temperature airflow and part of the mixture flows back to the flame stabilizer, part of the mixture flows downstream, so that the temperature and the distribution of a backflow area as well as the evaporation and the distribution of fuel oil are better improved, stable combustion and flame propagation are facilitated, and the flame stability performance is good.
Second, the flame propagation speed is fast. For the boost turbofan engine with the bypass ratio of about 0.5-0.6, a general V-shaped flame stabilizer is arranged behind an internal bypass annular mixer and an external bypass annular mixer, the V-shaped flame stabilizer generates a Karman vortex street type backflow vortex, the stability of the backflow vortex is poor, the temperature of unburnt airflow of the external bypass is low, fuel evaporation and flame propagation are not facilitated, and flameout is easily caused. The staggered flow guide middle seam type V-shaped flame stabilizer is arranged at the position of the inner culvert annular mixer and the outer culvert annular mixer, the K-H type backflow vortex is generated, the stability of the backflow vortex is good, the staggered flow guide middle seam can enable the temperature and the distribution of the backflow area as well as the evaporation and the distribution of fuel oil to be well improved, stable combustion and flame propagation are facilitated, and therefore the flame propagation speed is high.
Thirdly, the flow resistance loss is small. For the afterburner turbofan engine with the bypass ratio of about 0.5-0.6, a common integrated afterburner is adopted, most of unburnt gas flow of the bypass needs to be guided into the bypass and quickly mixed with hot gas flow of the bypass, and the larger flow resistance loss can be caused. After the staggered diversion slit type V-shaped flame stabilizer is arranged at the position of the annular mixer of the inner culvert and the outer culvert, only a small amount of unburnt airflow of the outer culvert is required to be guided into the inner culvert for cooling the support plate flame stabilizer, most of unburnt airflow of the outer culvert is woven by the staggered diversion slit type V-shaped flame stabilizer to participate in afterburning, and the flow resistance loss caused by the unburnt airflow of the outer culvert is relatively small, so the flow resistance loss is small.
Fourthly, the combustion efficiency is high. For the boost turbofan engine with the bypass ratio of about 0.5-0.6, a general V-shaped flame stabilizer is arranged behind an internal bypass annular mixer and an external bypass annular mixer, the V-shaped flame stabilizer generates a Karman vortex street type backflow vortex, the stability of the backflow vortex is poor, the temperature of unburnt airflow of the external bypass is low, fuel evaporation and flame propagation are not facilitated, and flameout is easily caused. The staggered flow guide middle seam type V-shaped flame stabilizer is arranged at the position of the internal and external culvert annular mixer, generates K-H type backflow vortex, has better stability of the backflow vortex, can better improve the temperature and the distribution of the backflow area as well as the evaporation and the distribution of fuel oil through the staggered flow guide middle seam, is beneficial to stable combustion and flame propagation, and can fully participate in afterburning due to the non-fuel gas flow in the external culvert, so that the combustion efficiency is high.
Drawings
FIG. 1 is an isometric view of a staggered flow centre slit V-shaped flame holder of the invention.
FIG. 2 is a side view of the staggered flow guiding slit V-shaped flame stabilizer of the invention.
FIG. 3 is a top view of the staggered flow guiding slit V-shaped flame stabilizer of the invention.
FIG. 4 is a bottom view of the cross flow guiding slit V-shaped flame stabilizer of the present invention.
FIG. 5 is a front view of the cross-flow centre-seam V-shaped flame holder of the invention.
FIG. 6 is a rear view of the staggered flow guiding slit V-shaped flame stabilizer of the invention.
FIG. 7 is a longitudinal section V of the V-shaped flame stabilizer with staggered flow guiding and middle slits in the inventionXAnd (4) distribution.
FIG. 8 is a cross-sectional view of a V-shaped cross-flow guiding slit type flame stabilizer according to the present inventionXAnd (4) distribution.
FIG. 9 is a flow chart of the staggered flow guiding slit V-shaped flame stabilizer of the invention.
In the drawings, 1 is a partition plate; 2 is a V-shaped surface; 3 is a staggered flow guide middle seam; 4 is a clapboard; and 5 is a lightening hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings 1 to 6 and examples.
A staggered flow guide middle seam type V-shaped flame stabilizer mainly comprises a partition plate 1, V-shaped surfaces 2, staggered flow guide middle seams 3, partition plates 4 and lightening holes 5, wherein the partition plate 1 can be regarded as an inner and outer culvert annular mixer, the V-shaped surfaces 2 are connected behind the partition plate 1, the staggered flow guide middle seams 3 are arranged on the V-shaped surfaces 2, the partition plates 4 are arranged on two sides of each hole of the staggered flow guide middle seams 3 and are perpendicular to the V-shaped surfaces 2, and the lightening holes 5 are arranged on the partition plates 4.
As a further improvement of the embodiment of the present invention, the spread length of the V-shaped surface 2 is determined by a specific engine, which is specifically 180mm in the present embodiment, and the wall thickness is 0.8 to 1.5mm, which is specifically 1mm in the present embodiment, and the width is 33 to 39mm, which is specifically 36mm in the present embodiment, and the included angle is 36 ° to 50 °, which is specifically 40 °.
As a further improvement of the embodiment of the invention, the staggered flow-guiding middle seam 3 is composed of rectangular holes, 13-21 holes and 14-22 holes are respectively arranged on both sides in the whole span direction, specifically 19 holes and 20 holes are respectively arranged in the embodiment, the length of the orifice on the orifice plane is 9-12 mm, and specifically 10.5mm is arranged in the embodiment.
As a further improvement of the embodiment of the invention, the wall thickness of the partition plate 4 is 0.8-1.2 mm, specifically 1mm in the embodiment, two front edges of the partition plate 4 are overlapped and connected with two inner wall surfaces of the V-shaped surface 2, a rear edge of the partition plate 4 is arc-shaped, the radius of the arc is 12-15 mm, and specifically 13.5mm in the embodiment.
As a further improvement of the embodiment of the invention, the shape of the lightening hole 5 is that two front edges of the partition plate 4 are offset inwards by 1.25-1.75 mm, specifically 1.5mm in the embodiment, and the rear edge is offset inwards by 2.5-3.5 mm, specifically 3mm in the embodiment, and then the two front edges are rounded at 3 sharp corners, wherein the radius of the rounded corners is 3-4 mm, specifically 3.5mm in the embodiment.
The embodiments described above are only preferred embodiments of the invention and are not exhaustive of the possible implementations of the invention. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (5)
1. The utility model provides a crisscross water conservancy diversion centre joint formula V type flame holder, its characterized in that mainly comprises division board (1), V profile (2), crisscross water conservancy diversion centre joint (3), baffle (4), lightening hole (5), wherein, division board (1) can be regarded as inside and outside culvert annular mixer, V profile (2) are connected to division board (1) back, arrange crisscross water conservancy diversion centre joint (3) on V profile (2), baffle (4) are arranged to perpendicular to V profile (2) in the both sides in every hole of crisscross water conservancy diversion centre joint (3), lightening hole (5) have been arranged on baffle (4).
2. The staggered flow guide slit type V-shaped flame stabilizer according to claim 1, wherein the spread length of the V-shaped surface (2) is determined by a specific engine, the wall thickness is 0.8-1.5 mm, the width is 33-39 mm, and the included angle is 36-50 degrees.
3. The cross flow guiding slit type V-shaped flame stabilizer according to claim 1, wherein the cross flow guiding slit (3) is composed of rectangular holes, 13-21 holes and 14-22 holes are respectively formed in the two sides in the whole spanwise direction, and the length of the hole opening in the hole opening plane is 9-12 mm.
4. The staggered flow guide slit type V-shaped flame stabilizer according to claim 1, wherein the wall thickness of the partition plate (4) is 0.8-1.2 mm, two front edges of the partition plate (4) are overlapped and connected with two inner wall surfaces of the V-shaped surface (2), and the rear edge of the partition plate (4) is arc-shaped, and the radius of the arc is 12-15 mm.
5. The staggered flow guiding centre-seam V-shaped flame stabilizer according to claim 1, wherein the lightening holes (5) are formed in such a way that the two front edges of the partition plate (4) are inwards deviated by 1.25-1.75 mm, the rear edges are inwards deviated by 2.5-3.5 mm, and then the partition plate is rounded at 3 sharp corners, and the radius of the rounded corners is 3-4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111019514.8A CN113701191B (en) | 2021-09-01 | 2021-09-01 | Staggered flow guide middle seam type V-shaped flame stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111019514.8A CN113701191B (en) | 2021-09-01 | 2021-09-01 | Staggered flow guide middle seam type V-shaped flame stabilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113701191A CN113701191A (en) | 2021-11-26 |
| CN113701191B true CN113701191B (en) | 2022-06-24 |
Family
ID=78658669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111019514.8A Active CN113701191B (en) | 2021-09-01 | 2021-09-01 | Staggered flow guide middle seam type V-shaped flame stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113701191B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2050541U (en) * | 1989-04-27 | 1990-01-03 | 国营长空机械厂 | Pore type low resistance combustion stabilizer |
| CN2091405U (en) * | 1991-01-08 | 1991-12-25 | 张寿珍 | Energy-saving gas burner |
| CN1080044A (en) * | 1992-03-16 | 1993-12-29 | 通用电气公司 | The eddy current flameholder of isolating velocity field under the non-basic running operating mode |
| JPH08200678A (en) * | 1995-01-23 | 1996-08-06 | Hitachi Ltd | Combustion device |
| FR2770284A1 (en) * | 1997-10-23 | 1999-04-30 | Snecma | CARBIDE AND OPTIMIZED COOLING FLAME HANGER |
| CN102607061A (en) * | 2012-03-26 | 2012-07-25 | 北京航空航天大学 | Geometrical variable flame stabilizing device |
| CN203131814U (en) * | 2013-01-31 | 2013-08-14 | 武汉誉德锅炉技术研究院(有限合伙) | Adjustable bluff body combustor |
| CN105546578A (en) * | 2015-12-25 | 2016-05-04 | 中国航空工业集团公司沈阳发动机设计研究所 | Flame stabilizer |
| CN105674332A (en) * | 2016-01-19 | 2016-06-15 | 西北工业大学 | Pre-evaporation type integrated afterburner |
| CN108426267A (en) * | 2018-05-11 | 2018-08-21 | 北京航空航天大学 | A kind of folding V-type bluff body eddy flameholder |
| WO2019018043A1 (en) * | 2017-07-19 | 2019-01-24 | Parker-Hannifin Corporation | Dual-fuel multi-port connector |
| CN109595589A (en) * | 2018-11-28 | 2019-04-09 | 西北工业大学 | A kind of integrated after-burner using double cyclone |
| CN110878714A (en) * | 2019-12-11 | 2020-03-13 | 南昌航空大学 | Gas turbine compressor cooling system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2873411B1 (en) * | 2004-07-21 | 2009-08-21 | Snecma Moteurs Sa | TURBOREACTOR WITH PROTECTIVE MEANS FOR A FUEL INJECTION DEVICE, INJECTION DEVICE AND PROTECTIVE COVER FOR THE TURBOJET ENGINE |
| FR2899316B1 (en) * | 2006-03-30 | 2008-05-16 | Snecma Sa | ARM-FIRE ARM OF A POST-COMBUSTION CHAMBER |
| FR2950416B1 (en) * | 2009-09-23 | 2012-04-20 | Snecma | FLAME-APPARATUS DEVICE COMPRISING AN ARM SUPPORT AND A MONOBLOCS HEAT PROTECTION SCREEN |
| JP2013181473A (en) * | 2012-03-02 | 2013-09-12 | Ihi Corp | Afterburner and aircraft engine |
-
2021
- 2021-09-01 CN CN202111019514.8A patent/CN113701191B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2050541U (en) * | 1989-04-27 | 1990-01-03 | 国营长空机械厂 | Pore type low resistance combustion stabilizer |
| CN2091405U (en) * | 1991-01-08 | 1991-12-25 | 张寿珍 | Energy-saving gas burner |
| CN1080044A (en) * | 1992-03-16 | 1993-12-29 | 通用电气公司 | The eddy current flameholder of isolating velocity field under the non-basic running operating mode |
| JPH08200678A (en) * | 1995-01-23 | 1996-08-06 | Hitachi Ltd | Combustion device |
| FR2770284A1 (en) * | 1997-10-23 | 1999-04-30 | Snecma | CARBIDE AND OPTIMIZED COOLING FLAME HANGER |
| CN102607061A (en) * | 2012-03-26 | 2012-07-25 | 北京航空航天大学 | Geometrical variable flame stabilizing device |
| CN203131814U (en) * | 2013-01-31 | 2013-08-14 | 武汉誉德锅炉技术研究院(有限合伙) | Adjustable bluff body combustor |
| CN105546578A (en) * | 2015-12-25 | 2016-05-04 | 中国航空工业集团公司沈阳发动机设计研究所 | Flame stabilizer |
| CN105674332A (en) * | 2016-01-19 | 2016-06-15 | 西北工业大学 | Pre-evaporation type integrated afterburner |
| WO2019018043A1 (en) * | 2017-07-19 | 2019-01-24 | Parker-Hannifin Corporation | Dual-fuel multi-port connector |
| CN108426267A (en) * | 2018-05-11 | 2018-08-21 | 北京航空航天大学 | A kind of folding V-type bluff body eddy flameholder |
| CN109595589A (en) * | 2018-11-28 | 2019-04-09 | 西北工业大学 | A kind of integrated after-burner using double cyclone |
| CN110878714A (en) * | 2019-12-11 | 2020-03-13 | 南昌航空大学 | Gas turbine compressor cooling system |
Non-Patent Citations (3)
| Title |
|---|
| V形稳焰体低速油雾燃烧对比实验研究;汤文华;《燃烧科学与技术》;20120630;第18卷(第3期);第272-278页 * |
| 一体化加力燃烧室冷态流动特性数值研究;贾翔中;《航空动力学报》;20210731;第36卷(第7期);第1472-1579页 * |
| 航空发动机尾气静电信号基线模型分析及应用;孙见忠;《航空动力学报》;20130331;第28卷(第3期);第532-540页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113701191A (en) | 2021-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109595590B (en) | Integrated afterburner of grid structure rectification support plate flame stabilizer | |
| CN111878849B (en) | Double-vortex control grading partition combustion chamber head | |
| CN108131684B (en) | A kind of annular oil feeding type integration after-burner | |
| CN111288491B (en) | Combustion chamber structure | |
| CN103411236B (en) | Opening side skirt plate type on-duty flame stabilizer | |
| CN113551259B (en) | Wavy middle-slit type V-shaped flame stabilizer with lobe partition plate | |
| CN111706879A (en) | Standing vortex combustion chamber class flame stabilizing concave cavity and oil gas matching device | |
| CN213272699U (en) | Standing vortex combustor value class oil gas matching device | |
| CN111981510A (en) | Lobe mixer capable of generating swirling jet flow | |
| CN114608032B (en) | Combustor with widened stability boundary | |
| CN113776082B (en) | Air-cooled wall type support plate combined flame stabilizer and combustion chamber | |
| CN113701191B (en) | Staggered flow guide middle seam type V-shaped flame stabilizer | |
| CN106678869A (en) | Twin-stage aero-engine strut used for integral afterburner | |
| CN112963863A (en) | Novel rectification support plate structure with built-in double oil passages and gas passages | |
| CN111023152B (en) | Rectification and injection integrated device and ramjet engine using same | |
| CN115355531B (en) | Hydrogen fuel combustion chamber head structure of half-runner jet hole | |
| CN113566236B (en) | Take vortex generator's wave trailing edge extension board flame holder | |
| CN115898693A (en) | Corrugated turbulent flow plane cooling device and application | |
| CN113701190B (en) | Take fin vortex generator's extension board flame holder | |
| CN111520763B (en) | Novel preheating type trapped vortex combustion chamber | |
| CN212132520U (en) | Axial staged burner | |
| CN202884967U (en) | Boiler preheater by-pass mixer | |
| CN113048513A (en) | Multistage oil spout hole center cone integration afterburner | |
| CN112577069A (en) | Oblique flow combustion chamber side wall surface structure suitable for small head inclination angle | |
| CN117469694A (en) | Multistage lobe type concave cavity standing vortex type support plate flame stabilizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |