CN110440293A - A kind of flame tube head can reduce carbon distribution - Google Patents
A kind of flame tube head can reduce carbon distribution Download PDFInfo
- Publication number
- CN110440293A CN110440293A CN201910683364.7A CN201910683364A CN110440293A CN 110440293 A CN110440293 A CN 110440293A CN 201910683364 A CN201910683364 A CN 201910683364A CN 110440293 A CN110440293 A CN 110440293A
- Authority
- CN
- China
- Prior art keywords
- venturi tube
- hole
- carbon distribution
- outer cylinder
- channel
- 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.)
- Pending
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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
- F23R3/42—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
- F23R2900/00004—Preventing formation of deposits on surfaces of gas turbine components, e.g. coke deposits
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Spray-Type Burners (AREA)
Abstract
The application belongs to Aeroengine Design technical field, is related to a kind of flame tube head that can reduce carbon distribution, including outer cylinder (7), is fixed on burner inner liner arrival end by head group section (5)；Venturi tube (2), with axially first restraining the metal passage wall surface (6) expanded afterwards along burner inner liner, and there is longitudinal end in channel end, the Venturi tube is socketed in the outer cylinder (7) inside, forms the first swirl channel between the side of the radial section and the outer cylinder (7)；Baffle (3) is arranged and forms the second swirl channel in the other side of the Venturi tube (2), and between the Venturi tube (2)；Through-hole (4) are provided on the baffle (3), the metal passage wall surface (6) of the airflow direction being blown into through the through-hole (4) and the Venturi tube (2) is tangent.The application reduces the probability of carbon distribution generation using in such a way that Venturi tube front increases carbon distribution blowing hole.
Description
Technical field
The application belongs to Aeroengine Design technical field, in particular to a kind of burner inner liner head that can reduce carbon distribution
Portion.
Background technique
Currently, many gas-turbine combustion chambers use the fuel-oil atmozation mode of double-cyclone, which has structure
Advantage compact, atomizing effect is good.Its atomization mechanism is expanding channel after fuel nozzle first restrains fuel oil injection in one
Metal wall surface forms one layer of oil film at metal wall surface endpoint, when oil film oil movement downwards, is gone out by from two-stage swirl-flow devices
The strong shear for the rotational flow gas come, so that oil droplet is smashed atomization.But directly due to the downstream of expanding channel after first restraining
It is combustion zone, so its surface subjects higher temperature and carbon particle can be precipitated after fuel oil bears high temperature and be deposited on metal watch
Face.Meanwhile the carbon particle of the incomplete combustion in recirculating zone also can gradually be deposited on expanding channel metal surface, time
It is long, it will form thicker carbon, so that the performance to combustion chamber generates adverse effect, destroy the outlet temperature point of combustion chamber
Cloth uniformity.At present it is known that anti-carbon deposition technology be to convergence expanding channel size constrain, as far as possible reduction carbon distribution
Amount.
GE company, the U.S., expanding channel was (rear to be known as after once having carried out first convergence in " energy-saving efficient engine " project
Venturi tube) design criteria research, according to the material of its subsequent announcement it is found that after using the criterion, although carbon distribution is one
Determine to be mitigated in degree, but after a long time of use, can still generate thicker carbon distribution.Therefore, or it is necessary to the knot
Carbon-collecting problem caused by structure conducts further research.
Summary of the invention
To solve the above problems, the application proposes a kind of flame tube head that can reduce carbon distribution, comprising:
Outer cylinder is fixed on burner inner liner arrival end by head group section；
Venturi tube, Venturi tube, which has, axially first restrains the metal passage wall surface expanded afterwards along burner inner liner, and in channel end
With longitudinal end, the Venturi tube is socketed in the outer barrel, and is formed between the side of the radial section and the outer cylinder
One swirl channel；
Baffle is arranged in the other side of the Venturi tube, and forms the second swirl channel between the Venturi tube；
It is provided with through-hole on the baffle, the metal passage wall of the airflow direction being blown into through the through-hole and the Venturi tube
Face is tangent.
Preferably, the airflow direction being blown into through the through-hole is parallel to burner inner liner axis direction.
Preferably, the through-hole is circular hole, and Circularhole diameter is not more than 2mm.
Preferably, the equivalent diameter of the through-hole is not more than 2mm.
Preferably, the through-hole is circumferentially provided with multiple on the baffle.
Preferably, it is provided with multiple intermediate cylinders between the Venturi tube and the outer cylinder, first eddy flow is led to
Road is divided into Multi-stage spiral channel.
The technical point of the application be Venturi tube front increase carbon distribution blowing hole come realize reduce carbon distribution by way of.
It is generated after being used for a long time present application addresses the double-cyclone fuel atomization device with Venturi tube in Wen's pipe surface
Thicker carbon distribution problem reduces the probability of carbon distribution generation using in such a way that Venturi tube front increases carbon distribution blowing hole.
Detailed description of the invention
Fig. 1 is the flame tube head structural schematic diagram that the application can reduce carbon distribution.
Wherein, 1- swirl-flow devices, 2- Venturi tube, 3- baffle, 4- through-hole, the head 5- group section, 6- metal passage wall surface, 7-
Outer cylinder.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application implementation clearer, below in conjunction with the application embodiment
In attached drawing, the technical solution in the application embodiment is further described in more detail.In the accompanying drawings, identical from beginning to end
Or similar label indicates same or similar element or element with the same or similar functions.Described embodiment is
A part of embodiment of the application, rather than whole embodiments.Embodiment below with reference to attached drawing description is to show
Example property, it is intended to for explaining the application, and should not be understood as the limitation to the application.Based on the embodiment in the application,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
Apply for the range of protection.Presently filed embodiment is described in detail with reference to the accompanying drawing.
This application provides a kind of flame tube heads that can reduce carbon distribution, mainly by swirl-flow devices 1, Venturi tube 2, Wen
Several through-holes 4 form on pipe front apron 3 and baffle, as shown in Figure 1, swirl-flow devices 1 can be one or more levels structure, outer cylinder
7 form the first swirl channel with Venturi tube 2, and Venturi tube 2 and baffle 3 form the second swirl channel, specific:
Outer cylinder 7 is fixed on burner inner liner arrival end by head group section 5；
Venturi tube 2 has and axially first restrains the metal passage wall surface 6 expanded afterwards along burner inner liner, and has in channel end
Longitudinal end, the Venturi tube are socketed in inside the outer cylinder 7, form first between the side of the radial section and the outer cylinder 7
Swirl channel；
Baffle 3 is arranged in the other side of the Venturi tube 2, and forms the second swirl channel between the Venturi tube 2；
It is provided with through-hole 4 on the baffle 3, the metal of the airflow direction being blown into through the through-hole 4 and the Venturi tube 2 is logical
Road wall surface 6 is tangent, flows into flame inside by the venturi of Venturi tube by the air-flow of aperture and participates in burning.
The air that the application flows through aperture is directly blown in Venturi tube metal surface, is finally downstream flowed from Venturi tube venturi
It is dynamic, the probability of happening of carbon distribution is reduced, the metal passage wall surface of Venturi tube 2 is first to shrink to expand afterwards, and radius R1-R2 leads to
The radius at the most narrow place in road is R1, and the center of baffle 3 is located on the central axis of burner inner liner, and through-hole is opened in away from baffle center R1-R2
Circumference on, such as when its distance be R1 when, the airflow direction being blown at this time through the through-hole 4 is parallel to burner inner liner axis side
To air-flow is blown just in the most narrow place of metal passage wall surface, alternate embodiment, and through-hole is opened in away from baffle center R1-R2, gas
If when being blown into direction and remaining set to be parallel to burner inner liner axis direction of stream, air-flow will be blown in Venturi tube metal passage wall surface
Convergence go out, and continue along metal passage wall surface flow, decarbonizing.
Through-hole described herein is circular hole, and Circularhole diameter is not more than 2mm.In alternate embodiment, through-hole is also possible to
Other non-circular openings, but its equivalent diameter is not still greater than 2mm, equivalent mode can be calculated by the way that area is equivalent.
In some optional embodiments, the through-hole is circumferentially provided with multiple, alternate embodiment on the baffle 3
In, which is bull portion, the through-hole that each head has corresponding baffle 3 and opens up thereon.
In some optional embodiments, multiple intermediate cylinders are provided between the Venturi tube 2 and the outer cylinder 7, thus
First swirl channel is divided into Multi-stage spiral channel, i.e. multilevel structure form can be set into the application swirl-flow devices 1.
It is generated after being used for a long time present application addresses the double-cyclone fuel atomization device with Venturi tube in Wen's pipe surface
Thicker carbon distribution problem reduces the probability of carbon distribution generation using in such a way that Venturi tube front increases carbon distribution blowing hole.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
Cover within the scope of protection of this application.Therefore, the protection scope of the application should be with the scope of protection of the claims
It is quasi-.
Claims (6)
1. a kind of flame tube head that can reduce carbon distribution characterized by comprising
Outer cylinder (7) is fixed on burner inner liner arrival end by head group section (5)；
Venturi tube (2), Venturi tube (2), which has, axially first restrains the metal passage wall surface (6) expanded afterwards along burner inner liner, and in channel
End has longitudinal end, and the Venturi tube is socketed in inside the outer cylinder (7), the side of the radial section and the outer cylinder (7)
Between form the first swirl channel；
Baffle (3) is arranged in the other side of the Venturi tube (2), and forms the second eddy flow between the Venturi tube (2) and lead to
Road；
Through-hole (4) are provided on the baffle (3), the gold of the airflow direction being blown into through the through-hole (4) and the Venturi tube (2)
It is tangent to belong to channel wall (6).
2. can reduce the flame tube head of carbon distribution as described in claim 1, which is characterized in that be blown into through the through-hole (4)
Airflow direction be parallel to burner inner liner axis direction.
3. can reduce the flame tube head of carbon distribution as described in claim 1, which is characterized in that the through-hole is circular hole, circle
Bore dia is not more than 2mm.
4. can reduce the flame tube head of carbon distribution as described in claim 1, which is characterized in that the equivalent diameter of the through-hole
No more than 2mm.
5. can reduce the flame tube head of carbon distribution as described in claim 1, which is characterized in that the through-hole is in the baffle
(3) it is circumferentially provided on multiple.
6. can reduce the flame tube head of carbon distribution as described in claim 1, which is characterized in that the Venturi tube (2) and institute
It states and is provided with multiple intermediate cylinders between outer cylinder (7), first swirl channel is divided into Multi-stage spiral channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910683364.7A CN110440293A (en) | 2019-07-26 | 2019-07-26 | A kind of flame tube head can reduce carbon distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910683364.7A CN110440293A (en) | 2019-07-26 | 2019-07-26 | A kind of flame tube head can reduce carbon distribution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110440293A true CN110440293A (en) | 2019-11-12 |
Family
ID=68431732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910683364.7A Pending CN110440293A (en) | 2019-07-26 | 2019-07-26 | A kind of flame tube head can reduce carbon distribution |
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| CN (1) | CN110440293A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864822A (en) * | 2021-10-13 | 2021-12-31 | 西北工业大学 | Machining ring type prefilming swirler |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6571559B1 (en) * | 1998-04-03 | 2003-06-03 | General Electric Company | Anti-carboning fuel-air mixer for a gas turbine engine combustor |
| CN1707162A (en) * | 2004-05-25 | 2005-12-14 | 通用电气公司 | Gas turbine engine combustor mixer |
| CN202835442U (en) * | 2012-09-03 | 2013-03-27 | 中国航空动力机械研究所 | Structure preventing carbon from being deposited on jet nozzle |
| CN108224478A (en) * | 2017-12-27 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | Inhibit the high temperature rise combustor head of Venturi tube carbon distribution |
| CN109611890A (en) * | 2018-12-14 | 2019-04-12 | 中国航发沈阳发动机研究所 | A kind of swirl-flow devices of three-level |
| CN109945235A (en) * | 2019-03-28 | 2019-06-28 | 中国航发湖南动力机械研究所 | Fuel nozzle, combustion chamber and aero-engine |
-
2019
- 2019-07-26 CN CN201910683364.7A patent/CN110440293A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6571559B1 (en) * | 1998-04-03 | 2003-06-03 | General Electric Company | Anti-carboning fuel-air mixer for a gas turbine engine combustor |
| CN1707162A (en) * | 2004-05-25 | 2005-12-14 | 通用电气公司 | Gas turbine engine combustor mixer |
| CN202835442U (en) * | 2012-09-03 | 2013-03-27 | 中国航空动力机械研究所 | Structure preventing carbon from being deposited on jet nozzle |
| CN108224478A (en) * | 2017-12-27 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | Inhibit the high temperature rise combustor head of Venturi tube carbon distribution |
| CN109611890A (en) * | 2018-12-14 | 2019-04-12 | 中国航发沈阳发动机研究所 | A kind of swirl-flow devices of three-level |
| CN109945235A (en) * | 2019-03-28 | 2019-06-28 | 中国航发湖南动力机械研究所 | Fuel nozzle, combustion chamber and aero-engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864822A (en) * | 2021-10-13 | 2021-12-31 | 西北工业大学 | Machining ring type prefilming swirler |
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Legal Events
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191112 |
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| RJ01 | Rejection of invention patent application after publication |