CN115507389A - Low-pollution tower type coaxial grading swirler for liquid fuel ship - Google Patents
Low-pollution tower type coaxial grading swirler for liquid fuel ship Download PDFInfo
- Publication number
- CN115507389A CN115507389A CN202211073096.5A CN202211073096A CN115507389A CN 115507389 A CN115507389 A CN 115507389A CN 202211073096 A CN202211073096 A CN 202211073096A CN 115507389 A CN115507389 A CN 115507389A
- Authority
- CN
- China
- Prior art keywords
- main combustion
- tower
- cyclone
- swirler
- pollution
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 53
- 239000003921 oil Substances 0.000 claims abstract description 18
- 239000000295 fuel oil Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract description 2
- 238000000889 atomisation Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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
- F23R3/38—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply comprising rotary fuel injection means
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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
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/04—Air inlet arrangements
- F23R3/10—Air inlet arrangements for primary air
- F23R3/12—Air inlet arrangements for primary air inducing a vortex
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
Abstract
The invention aims to provide a low-pollution tower type coaxial grading cyclone for a liquid fuel ship, which comprises a fuel header pipe, a main combustion level tower type cyclone, a primary axial cyclone, a secondary cyclone and a splash shield, wherein the secondary cyclone is positioned in the primary axial cyclone, the primary axial cyclone is positioned in the main combustion level tower type cyclone, a venturi is arranged between the main combustion level tower type cyclone and the secondary cyclone, the fuel header pipe is respectively connected with a main combustion level oil way and an assistant oil way, and the rear part of the main combustion level tower type cyclone is connected with the splash shield. The invention adopts the air atomizing nozzle at the main combustion stage to improve the fuel oil atomizing level, so that the high-temperature oil-gas mixture enters the flame tube along with high-speed airflow and is prevented from self-combusting in the throat. Meanwhile, annular wake air is introduced, so that the dependence of the spray penetration distance on the fuel flow can be effectively weakened, and the influence on the penetrating power of liquid drops in the central area and the outer edge of the spray can be ignored while liquid drops in the near-wall area of the spray are improved.
Description
Technical Field
The invention relates to a swirler, in particular to a swirler of a ship gas turbine.
Background
The application requirements of high-performance and low-pollution ship gas turbines are increasing day by day; meanwhile, the emission standards of atmospheric environmental pollutants are becoming strict, and the development of low-pollution gas turbines is challenging. The ship gas turbine mostly adopts liquid fuel for combustion, and the evaporation, atomization and mixing level of the fuel determine the comprehensive performance parameters of the combustion chamber; meanwhile, most of the combustion chambers are of ring-pipe structures, and are limited by size space and high-volume heat load, so that the flow field organization of the combustion chambers of the low-pollution ship gas turbine is more difficult. Therefore, at present, a low-pollution head structure of a gas turbine combustor of a ship, which is suitable for liquid fuel, is urgently needed, and the emission level of pollutants is reduced while the performance parameters of the whole machine are met.
Disclosure of Invention
The invention aims to provide a low-pollution tower type coaxial grading swirler for a liquid fuel ship, which can promote evaporation and atomization of fuel, improve the mixing level of oil and gas, and enable the oil and gas to be fully combusted so as to reduce pollutant emission.
The purpose of the invention is realized by the following steps:
the invention relates to a low-pollution tower type coaxial grading swirler for a liquid fuel ship, which is characterized in that: the fuel oil main pipe is respectively connected with a main combustion level oil circuit and an on-duty level oil circuit, the tail end of the main combustion level oil circuit is located in the venturi pipe, the tail end of the on-duty level oil circuit is located in the first-level axial swirler, and the rear part of the main combustion level tower type swirler is connected with the splash plate.
The present invention may further comprise:
1. the tail end of the main combustion stage oil way is provided with main combustion stage air atomizing nozzles, the main combustion stage air atomizing nozzles are surrounded by the annular hole, and the number of the main combustion stage air atomizing nozzles is 12, and the main combustion stage air atomizing nozzles are uniformly distributed along the axis.
2. The tail end of the class oil circuit is provided with a central centrifugal nozzle.
3. And a convergence structure is respectively added behind the primary axial swirler and the main combustion tower-type swirler.
4. The main combustion stage tower type swirler has an oblique radial angle.
5. The main combustion stage tower type swirler is provided with a main combustion stage tower type swirler blowing hole.
6. And cooling holes on the splash plate are arranged on the splash plate.
The invention has the advantages that:
the invention adopts the air atomizing nozzle at the main combustion stage to improve the fuel oil atomizing level, so that the high-temperature oil-gas mixture enters the flame tube along with high-speed airflow and is prevented from self-igniting inside the throat. Meanwhile, annular wake flow air is introduced, so that the dependence effect of the spray penetration distance on the fuel flow can be effectively weakened, and the influence on the penetrating power of liquid drops in the central area and the outer edge of the spray can be ignored while liquid drops in the near-wall area of the spray are improved.
The main combustion stage of the invention adopts a tower type swirler, and has the following two advantages: first, the pressure loss is small; second, the inlet air has an oblique radial angle, which can inhibit the upstream movement of the downstream air to inhibit backfiring.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
fig. 3 is a schematic view of the overall structure of the combustion chamber.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
with reference to fig. 1-3, the low-pollution tower-type coaxial classification swirler for the liquid fuel ship comprises a fuel header pipe 1, a primary axial swirler 2 with a contraction section, a secondary swirler 3, a purge hole 4 of the primary combustion tower-type swirler, a primary combustion tower-type swirler 5 and a cooling hole 6 on a splash disc, wherein central lines of all the parts are consistent. The fuel oil main pipe 1 is connected with a central centrifugal nozzle 1-4 and a main combustion stage air atomizing nozzle 1-2, the central centrifugal nozzle is positioned at the central axis of the component, and the main combustion stage air atomizing nozzle 1-2 is positioned at the tail end of a main combustion stage oil way 1-1 and can be seen at an opening of the inner wall of a main combustion stage tower-type swirler 5. The primary cyclone 2 and the secondary cyclone 3 are closely connected and externally connected with a venturi tube 2-1, the blades of the primary cyclone 2 are completely connected with the inner wall of a hub thereof to form a primary air inlet channel and a secondary air inlet channel respectively, and then connected with a sweeping hole 4 of the primary combustion stage tower type cyclone, the primary combustion stage air atomizing nozzle 1-2 is positioned at an opening of the inner wall of the primary combustion stage tower type cyclone 5, the outer part of the primary combustion stage tower type cyclone 5 is connected with the primary combustion stage tower type cyclone 5, and then connected with a cooling hole 6 on a splash plate and then connected with the splash plate 3-1.
The primary combustion stage air atomizing nozzles 1-2 are connected to the primary combustion stage oil way 1, the nozzles 1-2 are surrounded by an annular hole, 12 nozzles 1-2 are distributed annularly around the axis, and the nozzles 1-2 in the annular space can introduce a strand of annular air when spraying fuel, so that liquid drops in a near-wall area are eliminated, a large number of liquid drops are blown into a transverse incoming flow core area, and the fuel supply pressure is reduced, and the atomization is more sufficient.
A convergent structure is respectively added at the rear part of the on-duty primary cyclone 2 and the outlet of the main combustion stage throat, and when air flows through the convergent structure, a high-speed area is generated on the section of the throat, so that downstream flame is prevented from ascending and tempering.
The main combustion stage tower type swirler flow device 5 is inscribed as a third stage swirler, the inlet air has an inclined radial angle, the upstream movement of the downstream air can be restrained, the backfire can be restrained, and the pressure loss of the tower type swirler with the inclined structure is small.
As shown in figure 3, when the invention is applied, the tower type coaxial classification swirler is taken as a whole and is arranged at the head part of the flame tube of the ring-tube type combustion chamber.
Claims (7)
1. A low-pollution tower-type coaxial grading swirler for a liquid fuel ship is characterized in that: the fuel oil main pipe is respectively connected with a main combustion level oil circuit and an on-duty level oil circuit, the tail end of the main combustion level oil circuit is located in the venturi pipe, the tail end of the on-duty level oil circuit is located in the first-level axial swirler, and the rear part of the main combustion level tower type swirler is connected with the splash plate.
2. The marine low-pollution tower-type coaxial classifying cyclone for the liquid fuel as claimed in claim 1, wherein: the tail end of the main combustion stage oil way is provided with main combustion stage air atomizing nozzles, the main combustion stage air atomizing nozzles are surrounded by the annular hole, and the number of the main combustion stage air atomizing nozzles is 12, and the main combustion stage air atomizing nozzles are uniformly distributed along the axis.
3. The marine low-pollution tower-type coaxial classifying cyclone for the liquid fuel as claimed in claim 1, wherein: the tail end of the class oil way is provided with a central centrifugal nozzle.
4. The liquid fuel marine low-pollution tower-type coaxial classifying cyclone as claimed in claim 1, wherein: and a convergence structure is respectively added behind the primary axial swirler and the main combustion tower-type swirler.
5. The liquid fuel marine low-pollution tower-type coaxial classifying cyclone as claimed in claim 1, wherein: the main combustion stage tower type swirler has an oblique radial angle.
6. The marine low-pollution tower-type coaxial classifying cyclone for the liquid fuel as claimed in claim 1, wherein: the main combustion stage tower type swirler is provided with a main combustion stage tower type swirler blowing hole.
7. The marine low-pollution tower-type coaxial classifying cyclone for the liquid fuel as claimed in claim 1, wherein: and cooling holes on the splash plate are arranged on the splash plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211073096.5A CN115507389B (en) | 2022-09-02 | 2022-09-02 | Low-pollution tower type coaxial grading cyclone for liquid fuel ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211073096.5A CN115507389B (en) | 2022-09-02 | 2022-09-02 | Low-pollution tower type coaxial grading cyclone for liquid fuel ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115507389A true CN115507389A (en) | 2022-12-23 |
| CN115507389B CN115507389B (en) | 2024-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211073096.5A Active CN115507389B (en) | 2022-09-02 | 2022-09-02 | Low-pollution tower type coaxial grading cyclone for liquid fuel ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115507389B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040103668A1 (en) * | 2002-12-03 | 2004-06-03 | Bibler John D. | Method and apparatus to decrease gas turbine engine combustor emissions |
| US20050103021A1 (en) * | 2002-12-03 | 2005-05-19 | Held Timothy J. | Method and apparatus to decrease combustor emissions |
| CN101169252A (en) * | 2007-11-29 | 2008-04-30 | 北京航空航天大学 | Aerial engine lean premixed preevaporated low contamination combustion chamber |
| CN101285591A (en) * | 2008-04-22 | 2008-10-15 | 北京航空航天大学 | Integral fuel jet radial swirler pre-mixing preevaporated low pollution combustion-chamber |
| CN103256633A (en) * | 2012-02-16 | 2013-08-21 | 中国科学院工程热物理研究所 | Low-pollution combustion chamber adopting fuel-grading and three-stage cyclone air inlet |
| CN204006123U (en) * | 2014-06-26 | 2014-12-10 | 中航商用航空发动机有限责任公司 | A kind of multistage combustion with reduced pollutants system and combustion chamber |
| CN106482154A (en) * | 2016-10-31 | 2017-03-08 | 南京航空航天大学 | The lean premixed preevaporated low contamination combustion chamber that a kind of main is atomized with splashing type |
| CN108954388A (en) * | 2018-07-09 | 2018-12-07 | 西北工业大学 | A kind of multiple spot unit directly sprays fractional combustion room |
| CN109539313A (en) * | 2018-11-08 | 2019-03-29 | 西北工业大学 | A kind of head of combustion chamber that V-shaped groove is matched with cyclone |
| CN109595593A (en) * | 2018-11-28 | 2019-04-09 | 西北工业大学 | A kind of swirl combustion chamber head of air inlet section-variable |
-
2022
- 2022-09-02 CN CN202211073096.5A patent/CN115507389B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040103668A1 (en) * | 2002-12-03 | 2004-06-03 | Bibler John D. | Method and apparatus to decrease gas turbine engine combustor emissions |
| US20050103021A1 (en) * | 2002-12-03 | 2005-05-19 | Held Timothy J. | Method and apparatus to decrease combustor emissions |
| CN101169252A (en) * | 2007-11-29 | 2008-04-30 | 北京航空航天大学 | Aerial engine lean premixed preevaporated low contamination combustion chamber |
| CN101285591A (en) * | 2008-04-22 | 2008-10-15 | 北京航空航天大学 | Integral fuel jet radial swirler pre-mixing preevaporated low pollution combustion-chamber |
| CN103256633A (en) * | 2012-02-16 | 2013-08-21 | 中国科学院工程热物理研究所 | Low-pollution combustion chamber adopting fuel-grading and three-stage cyclone air inlet |
| CN204006123U (en) * | 2014-06-26 | 2014-12-10 | 中航商用航空发动机有限责任公司 | A kind of multistage combustion with reduced pollutants system and combustion chamber |
| CN106482154A (en) * | 2016-10-31 | 2017-03-08 | 南京航空航天大学 | The lean premixed preevaporated low contamination combustion chamber that a kind of main is atomized with splashing type |
| CN108954388A (en) * | 2018-07-09 | 2018-12-07 | 西北工业大学 | A kind of multiple spot unit directly sprays fractional combustion room |
| CN109539313A (en) * | 2018-11-08 | 2019-03-29 | 西北工业大学 | A kind of head of combustion chamber that V-shaped groove is matched with cyclone |
| CN109595593A (en) * | 2018-11-28 | 2019-04-09 | 西北工业大学 | A kind of swirl combustion chamber head of air inlet section-variable |
Non-Patent Citations (2)
| Title |
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| 张志浩: "低排放塔式同轴分级燃烧室旋流器性能研究", 中国电机工程学报, vol. 42, no. 15, pages 5595 - 5606 * |
| 方洪祖: "燃烧室", 燃气轮机技术, vol. 34, pages 2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115507389B (en) | 2024-03-19 |
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