CN114413283A - Integrated structure of cyclone sleeve and head plate - Google Patents
Integrated structure of cyclone sleeve and head plate Download PDFInfo
- Publication number
- CN114413283A CN114413283A CN202111630706.2A CN202111630706A CN114413283A CN 114413283 A CN114413283 A CN 114413283A CN 202111630706 A CN202111630706 A CN 202111630706A CN 114413283 A CN114413283 A CN 114413283A
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- plate
- swirler
- flame tube
- sleeve
- head
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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
- F23R3/38—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply comprising rotary fuel injection means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Combustion Of Fluid Fuel (AREA)
Abstract
The invention discloses an integrated structure of a swirler sleeve and a head plate, which comprises a cone plate (6) and an arc plate (7), wherein a swirler (2) is installed at an opening at the front end of the cone plate (6), the arc plate (7) is respectively arranged at the upper part and the lower part of the rear end of the cone plate (6), the arc plate (7) at the upper part is connected with the inner wall of an outer flame tube (4), and the arc plate (7) at the lower part is connected with the inner wall of an inner flame tube (5). The invention has compact structure, realizes the function integration of the sleeve and the head plate and optimizes the angular reflux area; by adopting the integrated head plate, the purposes of reducing weight of the combustion chamber and improving the performance of the combustion chamber can be realized.
Description
Technical Field
The invention belongs to the technical field of combustion chambers of aero-engines, and relates to an integrated structure of a swirler sleeve and a head plate.
Background
Aircraft engine combustors typically contain components such as swirlers, flame tubes, and the like. Wherein the swirler subassembly is outside the swirler body, still has a tubaeform sleeve structure in swirler exit, plays the effect of adjusting backward flow district size, position. The flame tube assembly comprises a flame tube wall, a head plate, a cap, a jet hole and other structures, wherein the head plate mainly plays a role in connecting the inner flame tube wall and the outer flame tube wall and fixing the swirler. In addition, a splash plate may be provided between the head plate and the sleeve as required by the combustion chamber design. A typical head plate, sleeve configuration is shown in fig. 1.
In a typical sleeve and head plate structure, the head plate is mainly used for fixing the swirler, and the sleeve is mainly used for adjusting a backflow area, so that the head structure of the flame tube is slightly redundantly complicated. For the structure shown in fig. 2, there are the following defects: 1) the head plate and sleeve structure, although the functions of each structure are obvious, obviously increases the weight of the combustion chamber. 2) Besides the swirler inlet air, the head plate of the flame tube head also enters part of cooling air for cooling the head plate and the sleeve structure. For the sleeve and header plate configuration of fig. 2 and 3, the cooling air effect is reduced by having the cooling air flow through the header plate first and then cooling the sleeve after the header plate is cooled. 3) A, B corners are formed by the wall surface of the outer flame tube and the head plate, C, D corners are formed by the wall surface of the inner flame tube and the head plate, and when air flows into the flame tube through the swirler and the sleeve, obvious angle backflow areas are formed at the four corners. When the combustion chamber burns, the main combustion area flame and the angular backflow area flame mutually influence, the phenomenon of unstable combustion easily occurs, and the safety of the combustion chamber is influenced.
Disclosure of Invention
Objects of the invention
The purpose of the invention is: the utility model provides a swirler sleeve and head board integrated structure scheme combines swirler sleeve and head board as an organic whole through reasonable mode for head board, sleeve effect can be undertaken to this structure, can optimize the combustion chamber performance again, reduces the risk of burning oscillation, reaches swirler sleeve and head board integration optimal design's purpose.
(II) technical scheme
In order to solve the technical problem, the invention provides an integrated structure of a swirler sleeve and a head plate, which comprises a cone plate 6 and an arc plate 7, wherein the swirler 2 is installed at an opening at the front end of the cone plate 6, the arc plate 7 is respectively arranged at the upper part and the lower part of the rear end of the cone plate 6, the upper arc plate 7 is connected with the inner wall of an outer flame tube 4, and the lower arc plate 7 is connected with the inner wall of an inner flame tube 5.
Wherein the swirler 2 is arranged in a cap cavity of the cap 1.
Wherein the conical plate 6 is a cone.
Wherein, the left and right sides of the cone plate 6, which are not provided with the arc plate 7, are respectively provided with the concave arcs 9.
Wherein, the concave arcs 9 are positioned on two periodic surfaces of the outer flame tube 4 and the inner flame tube 5.
The arc plate 7 is positioned at four corners of the upper left end face, the lower left end face, the upper right end face and the lower right end face of the cone plate 6 and is in smooth streamline butt joint with the cone plate 6.
Wherein, the conical plate 6 and the arc plate 7 are provided with cooling holes 8 for cooling the integrated head plate 3.
Wherein, the cone plate 6 and the arc plate 7 are integrally formed.
The invention also provides a flame tube head structure, which comprises a cap cover 1, a swirler 2, an outer flame tube 4, an inner flame tube 5 and a swirler sleeve and head plate integrated structure 3; the front end of the cap cover 1 is provided with an opening, the rear part of the cap cover is respectively connected with an outer flame tube 4 and an inner flame tube 5, an integrated structure 3 is arranged between the outer flame tube 4 and the inner flame tube 5, and the front end of the integrated structure 3 is provided with a swirler 2; the swirler 2 is opposite to the front opening of the cap 1.
(III) advantageous effects
The integrated structure of the cyclone sleeve and the head plate provided by the technical scheme has a compact structure, realizes the function integration of the sleeve and the head plate, and optimizes the angular reflux area; by adopting the integrated head plate, the purposes of reducing weight of the combustion chamber and improving the performance of the combustion chamber can be realized.
Drawings
FIG. 1 is a diagram of the internal structure of a typical sleeve and head plate.
FIG. 2 is a cross-sectional view of the sleeve and head plate.
Fig. 3 is a diagram of the angular backflow zone position.
FIG. 4 is a diagram of a liner head configuration.
FIG. 5 is a perspective view of the head structure of the flame tube.
Fig. 6 and 7 are front and left side views of the integrated head plate.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
As shown in fig. 4 and 5, the flame tube head comprises a cap 1, a swirler 2, an outer flame tube 4, an inner flame tube 5, and a swirler sleeve and head plate integrated structure 3 (hereinafter referred to as an integrated head plate 3); the front end of the cap cover 1 is provided with an opening, the rear part of the cap cover is respectively connected with an outer flame tube 4 and an inner flame tube 5, an integrated head plate 3 is arranged between the outer flame tube 4 and the inner flame tube 5, the front end of the integrated head plate 3 is provided with a swirler 2, and the swirler 2 is over against the opening at the front end of the cap cover 1.
The swirler 2 is arranged in the cap cavity of the cap 1.
As shown in fig. 6 and 7, the integrated head plate 3 includes a cone plate 6 and an arc plate 7, the swirler 2 is installed at an opening at the front end of the cone plate 6, the arc plate 7 is respectively arranged at the upper part and the lower part of the rear end of the cone plate 6, the upper arc plate 7 is connected with the inner wall of the outer flame tube 4, and the lower arc plate 7 is connected with the inner wall of the inner flame tube 5.
The cone plate 6 is a cone, mainly plays a role of a sleeve, and can be used for adjusting the size, the position and the like of a backflow area. The left side and the right side of the cone plate 6, which are not provided with the arc plate 7, are respectively provided with a concave arc 9. The concave arcs 9 are positioned on two periodic surfaces of the outer flame tube 4 and the inner flame tube 5.
The arc plate 7 is positioned at the four corners of the left upper, the left lower, the right upper and the right lower of the right end surface of the cone plate 6 and is in smooth and streamlined butt joint with the cone plate 6.
The cone plate 6 and the arc plate 7 can properly adjust the cone angle and size according to the design requirement of the combustion chamber, and correspondingly adjust the size of the arc plate 7 and the like.
In addition, cooling apertures 8 are arranged on the integrated header plate 3 for cooling the integrated header plate 3.
The working principle of the integrated structure of the swirler sleeve and the head plate is as follows:
1. air flows into the main combustion area of the flame tube through the swirler 2, and the size and the position of a backflow area are influenced by the cone plate 6 to form in a specific area.
2. At the corners, the gas flow is restricted to form an angular recirculation zone within the angular recirculation zone due to the presence of the arc plates 7.
3. The cooling apertures 8 may substantially cover the integrated header plate 3 and the header intake may substantially cool the integrated header plate 3.
4. On both periodic surfaces, the integrated head plate 3 is concave, and therefore, the cross-fire between the two heads is not affected.
According to the technical scheme, the invention has the following remarkable characteristics:
1. the cone plate 6 mainly plays a role of a sleeve and can be used for adjusting the size, the position and the like of a backflow area. The sizes of the cone angle, the length and the like of the cone plate are adjusted according to the design requirement of the combustion chamber.
2. The arc plate 7 is in smooth and streamlined butt joint with the cone plate 6, so that the rotational flow field is influenced.
3. The four corner arc plates 7 are required to effectively avoid the existence of corner recirculation zones.
4. On both periodic surfaces, the integrated head plate 3 has a concave shape 9, which does not affect the cross-flame between the two heads.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a swirler sleeve and head board integral structure, its characterized in that includes cone board (6) and arc board (7), and cone board (6) front end opening part installation swirler (2), cone board (6) rear end upper portion and lower part set up arc board (7) respectively, and outer flame tube (4) inner wall is connected in upper portion arc board (7), and inner flame tube (5) inner wall is connected in lower part arc board (7).
2. A swirler sleeve and head plate integrated structure as claimed in claim 1, characterised in that the swirler (2) is arranged in a cap cavity of a cap (1).
3. Swirler sleeve and head plate integrated construction according to claim 2, characterised in that the cone plate (6) is conical.
4. The swirler sleeve and head plate integrated structure as claimed in claim 3, characterized in that the left and right sides of the cone plate (6) where no arc plate (7) is provided are respectively provided with a concave arc (9).
5. Swirler sleeve and head plate integrated structure according to claim 4, characterised in that the concave arcs (9) are located on both periodic surfaces of the outer flame tube (4) and the inner flame tube (5).
6. The swirler sleeve and head plate integrated structure as claimed in claim 5, characterized in that the arc plate (7) is located at the upper left corner, the lower left corner, the upper right corner and the lower right corner of the right end face of the cone plate (6) and is in smooth and streamlined butt joint with the cone plate (6).
7. Swirler sleeve and head plate integrated structure according to claim 6, characterised in that cooling apertures (8) are arranged in the cone plate (6) and the arc plate (7) for cooling the integrated head plate (3).
8. Swirler sleeve and head plate integrated structure according to claim 7, characterised in that the cone plate (6) is integrated with the arc plate (7).
9. A flame tube head structure, characterized by comprising a cap (1), a swirler (2), an outer flame tube (4), an inner flame tube (5), and a swirler sleeve and head plate integrated structure (3) according to any of claims 1-8; the front end of the cap (1) is provided with an opening, the rear part of the cap is respectively connected with an outer flame tube (4) and an inner flame tube (5), an integrated structure (3) is arranged between the outer flame tube (4) and the inner flame tube (5), and the front end of the integrated structure (3) is provided with a swirler (2).
10. The combustor basket head structure as claimed in claim 9, wherein said swirler (2) is open to a front end of the cap (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111630706.2A CN114413283B (en) | 2021-12-28 | 2021-12-28 | Integrated structure of cyclone sleeve and head plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111630706.2A CN114413283B (en) | 2021-12-28 | 2021-12-28 | Integrated structure of cyclone sleeve and head plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114413283A true CN114413283A (en) | 2022-04-29 |
| CN114413283B CN114413283B (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111630706.2A Active CN114413283B (en) | 2021-12-28 | 2021-12-28 | Integrated structure of cyclone sleeve and head plate |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0026594A1 (en) * | 1979-09-28 | 1981-04-08 | General Motors Corporation | Low emissions prevaporization type combustor assembly |
| EP2525149A2 (en) * | 2011-05-20 | 2012-11-21 | Hitachi Ltd. | Combustor |
| EP2645000A2 (en) * | 2012-03-30 | 2013-10-02 | General Electric Company | Swirler for combustion chambers |
| CN104776451A (en) * | 2015-04-14 | 2015-07-15 | 中国科学院工程热物理研究所 | Multistage swirl combustion chamber with double-path backflow |
| CN204730249U (en) * | 2015-03-18 | 2015-10-28 | 浙江大学 | A kind of swirl combustion chamber head construction being provided with perforating Venturi tube |
| CN106224955A (en) * | 2016-07-26 | 2016-12-14 | 中国科学院工程热物理研究所 | A kind of fractional combustion room using multi-point injection surely to fire level raising combustion stability |
| CN109737450A (en) * | 2018-12-11 | 2019-05-10 | 北京航空航天大学 | Combustion chambers burn oscillation control device and combustion chambers burn oscillation control method |
| CN110131750A (en) * | 2019-04-26 | 2019-08-16 | 沈阳航空航天大学 | A kind of gas turbine low discharging burning chamber of using gas fuel |
| CN111207414A (en) * | 2020-01-17 | 2020-05-29 | 西北工业大学 | Strong rotational flow centrifugal reflux type nozzle |
| CN212057380U (en) * | 2020-03-23 | 2020-12-01 | 上海电力大学 | Combustion chamber device of high-temperature backflow zone at scattered boss |
| CN113028451A (en) * | 2021-03-23 | 2021-06-25 | 中国科学院工程热物理研究所 | Centrifugal nozzle and swirler integrated combustion chamber head structure |
-
2021
- 2021-12-28 CN CN202111630706.2A patent/CN114413283B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0026594A1 (en) * | 1979-09-28 | 1981-04-08 | General Motors Corporation | Low emissions prevaporization type combustor assembly |
| EP2525149A2 (en) * | 2011-05-20 | 2012-11-21 | Hitachi Ltd. | Combustor |
| EP2645000A2 (en) * | 2012-03-30 | 2013-10-02 | General Electric Company | Swirler for combustion chambers |
| CN204730249U (en) * | 2015-03-18 | 2015-10-28 | 浙江大学 | A kind of swirl combustion chamber head construction being provided with perforating Venturi tube |
| CN104776451A (en) * | 2015-04-14 | 2015-07-15 | 中国科学院工程热物理研究所 | Multistage swirl combustion chamber with double-path backflow |
| CN106224955A (en) * | 2016-07-26 | 2016-12-14 | 中国科学院工程热物理研究所 | A kind of fractional combustion room using multi-point injection surely to fire level raising combustion stability |
| CN109737450A (en) * | 2018-12-11 | 2019-05-10 | 北京航空航天大学 | Combustion chambers burn oscillation control device and combustion chambers burn oscillation control method |
| CN110131750A (en) * | 2019-04-26 | 2019-08-16 | 沈阳航空航天大学 | A kind of gas turbine low discharging burning chamber of using gas fuel |
| CN111207414A (en) * | 2020-01-17 | 2020-05-29 | 西北工业大学 | Strong rotational flow centrifugal reflux type nozzle |
| CN212057380U (en) * | 2020-03-23 | 2020-12-01 | 上海电力大学 | Combustion chamber device of high-temperature backflow zone at scattered boss |
| CN113028451A (en) * | 2021-03-23 | 2021-06-25 | 中国科学院工程热物理研究所 | Centrifugal nozzle and swirler integrated combustion chamber head structure |
Non-Patent Citations (1)
| Title |
|---|
| 林志勇等: "辅助动力装置环形回流燃烧室数值研究", 《航空动力学报》 * |
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| CN114413283B (en) | 2023-05-12 |
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