CN109899831B - Combustion chamber - Google Patents
Combustion chamber Download PDFInfo
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- CN109899831B CN109899831B CN201910181368.5A CN201910181368A CN109899831B CN 109899831 B CN109899831 B CN 109899831B CN 201910181368 A CN201910181368 A CN 201910181368A CN 109899831 B CN109899831 B CN 109899831B
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Abstract
The disclosure provides a combustion chamber, and relates to the field of aero-engines. This combustor includes combustor head and flame tube, and in addition, this combustor still includes splash board and first order oil feeding system, wherein: the splash guard is arranged between the combustion chamber head and the flame tube and is connected to the periphery of the combustion chamber head; the splash shield is internally provided with a cavity, and the side wall of the combustion chamber head is provided with an oil outlet which is communicated with the cavity and the interior of the combustion chamber head; and the first-stage oil supply system is arranged at one end of the splash plate, which is far away from the head part of the combustion chamber, is communicated with the cavity and is used for spraying fuel oil into the cavity. The combustion chamber disclosed by the invention can enhance the wall surface cooling effect and reduce the production cost.
Description
Technical Field
The disclosure relates to the field of aircraft engines, and particularly relates to a combustion chamber.
Background
With the development of aerospace technology, the requirements on an aero-engine are higher and higher. The combustion chamber is a core component of the engine and is used for converting chemical energy in fuel oil into heat energy. The combustion chamber is in a high-temperature and high-stress environment for a long time, faults such as guide plate ablation, head wall ablation and the like easily occur, and the engine cannot normally work directly. In order to ensure that the engine can normally work under different working states, a combustion chamber needs to be designed more finely.
Because the high-temperature fuel gas generated in the combustion process of the fuel oil can damage and ablate the wall surface of the head part of the combustion chamber, the cooling of the wall surface of the head part of the combustion chamber is very important. At present, mainly through setting up the guide plate to the wall cooling is realized to the form that control cooling air flow flows, however, the guide plate generally is located main burning zone, and combustion temperature is very high, damages the guide plate easily, and the cooling effect is relatively poor, and the cost is higher.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The purpose of this disclosure is to provide a combustion chamber, which can enhance the wall cooling effect and reduce the production cost.
According to one aspect of the present disclosure, there is provided a combustor comprising a combustor head and a liner, the combustor further comprising:
the splash guard is arranged between the combustion chamber head and the flame tube and is connected to the periphery of the combustion chamber head; the splash guard is internally provided with a cavity, and the side wall of the combustion chamber head is provided with an oil outlet hole which is communicated with the cavity and the interior of the combustion chamber head;
and the first-stage oil supply system is arranged at one end of the splash plate, which is far away from the head part of the combustion chamber, is communicated with the cavity and is used for spraying fuel oil into the cavity.
In an exemplary embodiment of the present disclosure, the oil outlet hole is plural in number, and each of the oil outlet holes is communicated with the cavity.
In an exemplary embodiment of the present disclosure, the combustion chamber further includes:
the second-stage oil supply system is arranged on one side, far away from the flame tube, of the combustion chamber head and is used for spraying fuel oil into the combustion chamber head;
the primary swirler is arranged on one side, far away from the flame tube, of the combustion chamber head and used for conveying airflow to the combustion chamber head.
In an exemplary embodiment of the present disclosure, the first stage oil supply system includes:
the nozzle faces the cavity and is used for injecting the fuel oil to the cavity;
and the control valve is used for controlling the nozzle to be opened or closed.
In an exemplary embodiment of the present disclosure, the combustion chamber further includes:
and the secondary swirler is arranged on one side of the primary swirler, which is far away from the secondary oil supply system, and is used for conveying airflow to the head part of the combustion chamber.
In an exemplary embodiment of the disclosure, each oil outlet hole is uniformly distributed on the inner surface of the side wall of the combustion chamber head in an annular shape.
In an exemplary embodiment of the present disclosure, the splash plate is an annular structure surrounding the combustor head, and the cavity is an annular structure surrounding the combustor head.
In an exemplary embodiment of the disclosure, the diameter of each oil outlet is 0.5-1 mm.
In an exemplary embodiment of the disclosure, the distance between two adjacent oil outlet holes is 1-5 times of the minimum aperture in the oil outlet holes.
In an exemplary embodiment of the disclosure, the number of the first stage oil supply systems is multiple, and the multiple first stage oil supply systems are uniformly distributed at one end of the splash plate far away from the combustion chamber head.
This disclosed combustion chamber, first order oil feeding system accessible cavity and the inside intercommunication of combustion chamber head, accessible cavity carry the fuel to the combustion chamber in the head to can provide fuel for the combustion chamber. In the process, the cavity is arranged in the splash guard, so that the fuel in the cavity can absorb the heat outside the splash guard to be vaporized, the surface temperature of the splash guard can be reduced, the splash guard is prevented from being damaged, a special guide plate for cooling airflow to flow is avoided, and the production cost is reduced; meanwhile, the fuel is vaporized after passing through the cavity and is changed into fuel steam which is output from the oil outlet hole, so that the atomization effect can be improved, local hot spots formed inside the combustion chamber can be avoided, and the wall surface of the combustion chamber can be prevented from being damaged.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a schematic view of a structure of a combustion chamber in the related art.
FIG. 2 is a cross-sectional view of a combustion chamber according to an embodiment of the present disclosure.
FIG. 3 is a side view of a combustor head according to an embodiment of the present disclosure.
FIG. 4 is a schematic structural view of a combustor in accordance with an embodiment of the present disclosure.
In the figure: 100. a combustion chamber; 101. a combustion chamber head; 102. a flame tube; 103. a baffle; 1. a combustion chamber head; 2. a flame tube; 3. a splash plate; 31. a cavity; 4. a first stage oil supply system; 5. an oil outlet hole; 6. a primary swirler; 7. a secondary swirler; 8. and a second stage oil supply system.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "a," "an," "the," and "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. The terms "first" and "second" are used merely as labels, and are not limiting on the number of their objects.
In the related art, as shown in fig. 1, the combustion chamber includes a combustion chamber head 101, a flame tube 102, and a baffle 103, wherein the combustion chamber head 101 may include a fuel nozzle that may be used to deliver fuel to the combustion chamber head 101 for combustion; the flame tube 102 is provided at one end of the combustion chamber head 101 to burn high-temperature gas; the baffle 103 is used to control the flow of the cooling air stream through the combustor head 101 to reduce the combustor wall temperature.
In practical application, the wall temperature can be reduced by the guide plate 103, but the arrangement of the guide plate 103 makes the structure of the combustion chamber complex, thereby increasing the manufacturing cost. Meanwhile, the guide plate 103 is arranged inside the flame tube 102 and is located in the main combustion area, and the temperature near the guide plate 103 is too high in the combustion process, so that the guide plate is easy to damage and loses the cooling effect.
The disclosed embodiment provides a combustion chamber, as shown in fig. 2 and 4, comprising a combustion chamber head 1 and a flame tube 2, the combustion chamber 100 may further comprise a splash plate 3 and a first stage oil supply system 4, wherein:
the splash shield 3 can be arranged between the combustion chamber head part 1 and the flame tube 2 and can be connected to the periphery of the combustion chamber head part 1; the splash shield 3 can be internally provided with a cavity 31, and the side wall of the combustion chamber head 1 can be provided with an oil outlet 5 which is communicated with the cavity 31 and the interior of the combustion chamber head 1;
the first-stage oil supply system 4 may be disposed at an end of the splash plate 3 away from the combustion chamber head 1, may be communicated with the cavity 31, and may be configured to inject fuel into the cavity 31.
In the combustion chamber 100 of the present disclosure, the first stage oil supply system 4 may communicate with the interior of the combustion chamber head 1 through the cavity 31, and fuel oil may be delivered into the combustion chamber head 1 through the cavity 31, so as to supply fuel to the combustion chamber 100. In the process, as the cavity 31 is arranged in the splash guard 3, the fuel in the cavity 31 can absorb the heat outside the splash guard 3 to be vaporized, so that the surface temperature of the splash guard 3 can be reduced, the splash guard 3 is prevented from being damaged, a special guide plate for cooling airflow to flow is avoided, and the production cost is reduced; meanwhile, the fuel oil is vaporized after passing through the cavity 31 and is changed into fuel oil steam which is output from the oil outlet 5, so that the atomization effect can be improved, local hot spots are prevented from being formed in the combustion chamber 100, and the wall surface of the combustion chamber 100 is prevented from being damaged.
The following describes in detail the various portions of the combustion chamber 100 according to the disclosed embodiment:
the splash plate 3 may be disposed between the combustion chamber head 1 and the flame tube 2, and specifically, the splash plate 3 may be connected to the outer periphery of the combustion chamber head 1 and may have an annular structure around the outer periphery of the combustion chamber head 1. The splash plate 3 may be a flat plate structure, and may have a shape of a circle, an oval, a square, a rectangle, or other irregular patterns, and may be made of a high temperature resistant material, specifically, a metal, an alloy, or stainless steel, for example, a titanium alloy, an aluminum alloy, a magnesium alloy, or the like, and of course, other materials may also be used, for example: but also composite materials, which are not listed here.
The splash plate 3 may be provided with an opening for exposing the combustion chamber head 1, and the shape of the opening may be circular, elliptical, polygonal, or other shapes, and the shape of the opening is not particularly limited as long as the combustion chamber head 1 can be exposed. The shape of the opening may be determined according to the shape of the outer surface of the combustion chamber head 1, for example, when the outer surface of the combustion chamber head 1 is circular, the opening of the splash plate 3 may be circular, and when the outer surface of the combustion chamber head 1 is rectangular, the opening of the splash plate 3 may be rectangular, but of course, the outer surface of the combustion chamber head 1 may have other shapes, and accordingly, the opening of the splash plate 3 may have other shapes, and is not particularly limited herein.
The side wall of the combustion chamber head 1 may be provided with an oil outlet hole 5 communicating the cavity 31 and the interior of the combustion chamber head 1, so that the fuel in the cavity 31 can be delivered into the combustion chamber head 1 through the oil outlet hole 5, and the composition of the fuel is not particularly limited herein. As shown in fig. 3, the oil outlet 5 may be a through hole provided in the side wall of the combustion chamber head 1, and may be a straight hole or an inclined hole, or may be another type of through hole, for example, a stepped hole, and the type of the oil outlet 5 is not particularly limited.
The number of the oil outlet holes 5 can be multiple, and the multiple oil outlet holes 5 can be communicated with the cavity 31, and the multiple oil outlet holes 5 can be uniformly distributed on the inner surface of the side wall of the combustion chamber head 1 in an annular manner, and the number of the annular oil outlet holes 5 can be 1, 2, 3, 4, or other, which is not listed here any more. For example, the oil outlet holes 5 may be uniformly arranged in a ring shape, or may be arranged side by side in a plurality of rings, for example, 3 rows, so as to uniformly deliver the fuel in the cavity 31 to the combustion chamber head 1, thereby preventing the fuel from gathering together and delivering to the interior of the combustion chamber head 1 to generate local hot spots, and further damaging the side wall of the combustion chamber 100.
The shape of the oil outlet holes 5 may be circular, rectangular or other patterns, and the shape of the oil outlet holes 5 is not particularly limited. In an embodiment, the oil outlet 5 may be circular, and the diameter of the oil outlet may be 0.5 to 1mm, for example, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm, or other diameters, which are not limited herein. When the oil outlet 5 is multirow, the row interval between two adjacent rows of oil outlet 5 can be 1 ~ 5 times of the minimum aperture in the oil outlet 5.
For example, if the diameter of the oil outlet hole 5 with the smallest diameter among all the oil outlet holes 5 is 0.5mm, the row spacing between two adjacent rows of oil outlet holes 5 may be 1 to 5 times of 0.5mm, and the row spacing may be 0.5mm, 1mm, 1.5mm, 2mm or 2.5 mm; if the diameter of the oil outlet hole 5 with the smallest diameter among all the oil outlet holes 5 is 0.6mm, the row spacing between two adjacent rows of oil outlet holes 5 may be 1 to 5 times of 0.6mm, and the row spacing thereof may be 0.6mm, 1.2mm, 1.8mm, 2.4mm or 3mm, of course, if the diameters of all the oil outlet holes 5 are equal, the row spacing between two adjacent rows of oil outlet holes 5 may be 1 to 5 times of the diameter, for example, the diameter of all the oil outlet holes 5 is 0.7mm, the row spacing between two adjacent rows of oil outlet holes 5 may be 0.7mm, 1.4mm, 2.1mm, 2.8mm or 3.5mm, of course, the row spacing between two adjacent rows of oil outlet holes 5 may be other, and is not listed herein. The central angle formed by the two adjacent oil outlet holes 5 in the same row and the center of the ring can be 2 degrees, 4 degrees, 6 degrees, 8 degrees or 10 degrees, and of course, other degrees can also be adopted, and the central angles are not listed. The degrees of the central angle formed by the two adjacent oil outlet holes 5 in the two adjacent rows relative to the annular center can be different, namely: the fork rows can be distributed.
The first-stage oil supply system 4 may be disposed at an end of the splash plate 3 away from the combustion chamber head 1, may be communicated with the cavity 31, and may be configured to inject fuel into the cavity 31. The number of the first stage oil supply systems 4 may be plural, for example, the number of the first stage oil supply systems 4 may be 2, 3, 4, 5 or 6, and of course, the number of the first stage oil supply systems 4 may also be 1 or other numbers, which is not particularly limited herein. Each first-stage oil supply system 4 can be uniformly distributed at one end of the splash plate 3 far away from the combustion chamber head 1, and the plurality of first-stage oil supply systems 4 can be communicated with the cavity 31 and can simultaneously spray fuel oil into the cavity 31.
The first stage oil supply system 4 may comprise nozzles and control valves, wherein:
the nozzle may be located on a side of the cavity 31 remote from the combustion head 1 and may be located towards the cavity 31 and may be adapted to inject fuel into the cavity 31 at a predetermined pressure and a predetermined flow rate in order to provide fuel into the cavity 31. The nozzles may be circular, rectangular, polygonal or other shapes, and may be one in number for facilitating communication with the chamber 31, and may have openings shaped to match the shape of the ports of the chamber 31. Of course, the number of the nozzles may be plural, for example, 2, 3, 4, 5 or other numbers, and a plurality of nozzles may be all in communication with the cavity 31, and a plurality of nozzles may simultaneously inject the fuel into the cavity 31.
The control valve may be used to control the nozzle to open or close, and may be a solenoid valve, an electric valve, or other types of control valves, which are not listed here. Specifically, for convenience of control, the number of the control valves may be 1, of course, the number of the control valves may also be multiple, and multiple control valves may control the nozzles to open or close in a one-to-one correspondence manner, for example, the number of the control valves may be 2, also may be 3, also may be 4 or 5, of course, also may be other numbers, which are not particularly limited herein, and the number of the control valves may match with the number of the nozzles, for example, when the number of the nozzles is 2, the number of the control valves may also be 2, when the number of the nozzles is 3, the number of the control valves may also be 3, of course, the number of the nozzles may also be other, correspondingly, the number of the control valves may also be other, which is not illustrated herein one by one.
As shown in fig. 2, the combustion chamber 100 of the present disclosure may further include a second stage oil supply system 8 and a first stage swirler 6, wherein:
the second stage fuel supply system 8 may be disposed on a side of the combustion chamber head 1 away from the liner 2, and may be configured to inject fuel into the combustion chamber head 1. The number of the second-stage oil supply systems 8 may be one or a plurality of second-stage oil supply systems 8, and each of the second-stage oil supply systems 8 may be arranged side by side on the side of the combustion chamber head 1 away from the flame tube 2, and each of the second-stage oil supply systems 8 may simultaneously spray fuel into the combustion chamber head 1.
For example, the second-stage oil supply system 8 may also include a nozzle and a control valve, and the nozzle may be disposed toward the inside of the combustion chamber head 1 and may be configured to inject fuel oil into the combustion chamber head 1 according to a preset pressure and a preset flow rate so as to supply fuel to the inside of the combustion chamber head 1. The nozzle may be circular, rectangular, polygonal or other shapes, and the shape of the nozzle is not particularly limited. The control valve may be used to control the nozzle to open or close, and may be a solenoid valve, an electric valve, or other types of control valves, which are not listed here. The control valve may be provided in correspondence with the nozzle and may be used to control the nozzle to open or close in order to inject and or stop the fuel injection inside the combustion chamber head 1.
The primary swirler 6 may be disposed on a side of the combustion head 1 away from the flame tube 2, and may be configured to deliver a gas flow to the combustion head 1, where the gas flow may be air, or may be other gas that facilitates combustion of fuel, and is not limited herein. The gas flow delivered by the primary swirler 6 may be mixed with fuel injected by the secondary fuel supply 8 in the combustion chamber head 1 to create a diffusion combustion mode to facilitate the temperature rise of the combustion chamber 100.
As shown in fig. 2, the combustion chamber 100 of the present disclosure may further include a secondary swirler 7, and the secondary swirler 7 may be disposed on a side of the primary swirler 6 away from the secondary oil supply system 8, and may be used to deliver a gas flow to the combustion chamber head 1, where the gas flow may be air, or may be other gas that facilitates combustion of fuel, and is not limited herein. The air flow delivered by the secondary swirler 7 can be mixed with fuel steam input into the combustion chamber head 1 from the oil outlet 5, and a premixed combustion mode can be formed, so that the combustion efficiency of fuel is improved, and the phenomenon that local hot spots are formed inside the combustion chamber 100 to damage the wall surface of the combustion chamber 100 is avoided.
The operation of the combustion chamber 100 of the disclosed embodiment is explained as follows:
when the fuel injection device is used, fuel injected into the combustion chamber 100 by the second-stage fuel supply system 8 can be mixed with air flow conveyed by the first-stage swirler 6 to form a diffusion combustion mode, high-temperature fuel can be formed near the splash plate 3 at the moment, the temperature of the high-temperature fuel is continuously increased, when the temperature reaches a threshold value, the first-stage fuel supply system 4 can inject fuel into the cavity 31, and the fuel can absorb heat energy outside the side wall of the splash plate 3 to be vaporized, so that the temperature of the surface of the splash plate 3 is reduced, the splash plate 3 is prevented from being burnt out, and the temperature rise of the combustion chamber 100 is further facilitated. The fuel after the vaporization can be evenly carried to the combustion chamber 100 through a plurality of oil outlets 5, avoids the production of local hot spot to the protection combustion chamber 100 wall does not receive the damage, and simultaneously, the air current that second grade swirler 7 carried can mix with the fuel steam that oil outlet 5 carried, forms the combustion mode of premixing, thereby improves the combustion efficiency of fuel, and avoids forming local hot spot inside the combustion chamber 100, damages combustion chamber 100 wall.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (9)
1. A combustor comprising a combustor head and a liner, wherein the combustor further comprises:
the splash guard is arranged between the combustion chamber head and the flame tube and is connected to the periphery of the combustion chamber head; the splash guard is internally provided with a cavity, and the side wall of the combustion chamber head is provided with an oil outlet hole which is communicated with the cavity and the interior of the combustion chamber head;
the first-stage oil supply system is arranged at one end of the splash plate, which is far away from the head of the combustion chamber, is communicated with the cavity and is used for spraying fuel oil into the cavity;
the quantity of oil outlet is a plurality of, and each the oil outlet all with the cavity intercommunication.
2. The combustor of claim 1, further comprising:
the second-stage oil supply system is arranged on one side, far away from the flame tube, of the combustion chamber head and is used for spraying fuel oil into the combustion chamber head;
the primary swirler is arranged on one side, far away from the flame tube, of the combustion chamber head and used for conveying airflow to the combustion chamber head.
3. The combustor of claim 1, wherein said first stage oil supply system comprises:
the nozzle faces the cavity and is used for injecting the fuel oil to the cavity;
and the control valve is used for controlling the nozzle to be opened or closed.
4. The combustor of claim 2, further comprising:
and the secondary swirler is arranged on one side of the primary swirler, which is far away from the secondary oil supply system, and is used for conveying airflow to the head part of the combustion chamber.
5. The combustor of claim 1, wherein each of said oil outlet holes is uniformly distributed in a ring shape on an inner surface of a sidewall of said combustor head.
6. The combustor of claim 1, wherein the splash plate is an annular structure surrounding the combustor head and the cavity is an annular structure surrounding the combustor head.
7. The combustor according to claim 1, wherein the diameter of each oil outlet is 0.5-1 mm.
8. The combustor according to claim 1, wherein the distance between two adjacent oil outlet holes is 1-5 times of the minimum diameter of the oil outlet holes.
9. The combustor of claim 1, wherein said first stage oil supply system is provided in plurality and is uniformly distributed at an end of said splash plate remote from said combustor head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910181368.5A CN109899831B (en) | 2019-03-11 | 2019-03-11 | Combustion chamber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910181368.5A CN109899831B (en) | 2019-03-11 | 2019-03-11 | Combustion chamber |
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| CN109899831A CN109899831A (en) | 2019-06-18 |
| CN109899831B true CN109899831B (en) | 2020-10-02 |
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| CN101737802A (en) * | 2009-11-27 | 2010-06-16 | 北京航空航天大学 | Central cavity stable fire tangential combustion chamber |
| CN103123122A (en) * | 2012-12-31 | 2013-05-29 | 南京航空航天大学 | Lean oil pre-mixing and pre-evaporating low-pollution combustion chamber capable of ejecting main-stage fuel oil directly |
| CN204648319U (en) * | 2015-02-11 | 2015-09-16 | 中航商用航空发动机有限责任公司 | Cooling structure between combustion chamber cyclone main pre-combustion grade |
| 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 |
| CN108561898A (en) * | 2017-12-27 | 2018-09-21 | 中国航发四川燃气涡轮研究院 | A kind of coaxial subregion high temperature rise combustor head |
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2019
- 2019-03-11 CN CN201910181368.5A patent/CN109899831B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1186832A2 (en) * | 2000-09-08 | 2002-03-13 | General Electric Company | Fuel nozzle assembly for reduced exhaust emissions |
| CN101737802A (en) * | 2009-11-27 | 2010-06-16 | 北京航空航天大学 | Central cavity stable fire tangential combustion chamber |
| CN103123122A (en) * | 2012-12-31 | 2013-05-29 | 南京航空航天大学 | Lean oil pre-mixing and pre-evaporating low-pollution combustion chamber capable of ejecting main-stage fuel oil directly |
| CN204648319U (en) * | 2015-02-11 | 2015-09-16 | 中航商用航空发动机有限责任公司 | Cooling structure between combustion chamber cyclone main pre-combustion grade |
| 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 |
| CN108561898A (en) * | 2017-12-27 | 2018-09-21 | 中国航发四川燃气涡轮研究院 | A kind of coaxial subregion high temperature rise combustor head |
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| CN109899831A (en) | 2019-06-18 |
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