CN102809156A - Double-rotational-flow burner with Venturi pipe type premixing section - Google Patents
Double-rotational-flow burner with Venturi pipe type premixing section Download PDFInfo
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- CN102809156A CN102809156A CN2011101441313A CN201110144131A CN102809156A CN 102809156 A CN102809156 A CN 102809156A CN 2011101441313 A CN2011101441313 A CN 2011101441313A CN 201110144131 A CN201110144131 A CN 201110144131A CN 102809156 A CN102809156 A CN 102809156A
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- fuel nozzle
- cyclone
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- venturi
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Abstract
The invention relates to a double-rotational-flow burner with a Venturi pipe type premixing section. The double-rotational-flow burner comprises a fuel nozzle arranged at a central position of a cylindrical burner main body and an annular air flow path which surrounds the fuel nozzle and is coaxially arranged with the fuel nozzle, wherein the downstream of the air flow path is connected with the Venturi pipe type premixing section; the air flow path on the upstream of the Venturi pipe type premixing section is internally provided with a double-stage axial swirler with an inner circumference rotational flow structure and an outer circumference rotational flow structure; and an outlet end surface of the fuel nozzle is arranged at the throat of the Venturi pipe type premixing section. According to the double-rotational-flow burner, in a quite wide load regulating range, the quick and sufficient mixing of fuels and air can be realized so as to achieve the purpose of reducing pollutant emission in a burning process.
Description
Technical field
The present invention relates to the gas turbine technology field, relate to a kind of burner that is applied to gas-turbine combustion chamber particularly.
Background technology
The burner of known gas-turbine combustion chamber; Like document 1 [Archer S; Gupta A K.Confinement Effects on Flow Dynamics in Swirling Flames.ASMEPWR2005-50167] structure of report: at the center of the burner body of tubular configuration fuel nozzle, the periphery of surrounding this fuel nozzle disposes the twin-stage axial swirler.This burner has adopted the twin-stage eddy flow, with appropriate allocation two-stage rotational flow air flow, can increase the air mass flow of whole head, widens load regulation range; But there is not the convergent flow guiding structure after the outlet of the fuel nozzle of this burner, fuel and the air performance shortcoming aspect rapid mixing.
Document 2 [Fu Yongqiang for another example; Jeng S M; Tacina R.Characterics of the Swirling Flow Generated by an Axial Swirler.ASME GT2005-68728] structure of report: the center of the burner body of tubular configuration fuel nozzle; The periphery of fuel nozzle is an air flow circuit, and the downstream of air flow circuit are venturi-type premixed section.In the air flow circuit at the venturi-type premixed section upper reaches, the ordinary single-stage axial swirler is set, the fuel nozzle exit end face is arranged in the throat of venturi-type premixed section.This kind burner has adopted venturi-type premixed section, and the tapered configuration of said venturi-type premixed section can guide air to inject fuel, realizes that fuel fully mixes with the quick of air; But the axial swirler of this burner adopts the single-stage cyclone structure, and the load regulation range of single step arrangement is narrower.
Summary of the invention
The object of the present invention is to provide a kind of bispin stream burner that is provided with venturi-type premixed section, can realize in quite wide load regulation range that fuel fully mixes with the quick of air, reaches and reduces pollutant emission purpose in the combustion process.
For realizing above-mentioned purpose, the bispin that is provided with venturi-type premixed section provided by the invention flows burner, and its structure is:
Be arranged at the fuel nozzle of tubular burner body center;
Surround said fuel nozzle and with the air flow circuit of the ring-type of said fuel nozzle coaxial arrangement;
The air flow circuit downstream connect venturi-type premixed section;
The twin-stage axial swirler of all cyclone structures and periphery cyclone structure in being provided with in the air flow circuit at the venturi-type premixed section upper reaches;
The fuel nozzle exit end face is arranged on the throat of venturi-type premixed section.
Described bispin stream burner, wherein, the interior all cyclone structures and the periphery cyclone structure of twin-stage axial swirler are blade construction.
Described bispin stream burner, wherein, the blade of interior all cyclone structures of twin-stage axial swirler is identical with the tangential of the blade of periphery cyclone structure or opposite.
Described bispin stream burner, wherein, the interior all cyclone structures and the periphery cyclone structure of twin-stage axial swirler are the pore structure of cutting sth. askew.
Described bispin stream burner, wherein, the tangential in the hole of cutting sth. askew of the cut sth. askew hole and the periphery cyclone structure of interior all cyclone structures of twin-stage axial swirler is identical or opposite.
Described bispin stream burner, wherein, interior all cyclone structures of twin-stage axial swirler are the pore structure of cutting sth. askew, the periphery cyclone structure is a blade construction.
Described bispin stream burner, wherein, the tangential of the cut sth. askew hole and the blade of twin-stage axial swirler is identical or opposite.
The present invention be coupled venturi-type premixed segment structure and twin-stage axial swirler structure, wherein the fuel nozzle exit end face is arranged in the throat of the venturi-type premixed section after the coupling.The present invention adopts the twin-stage eddy flow with appropriate allocation two-stage rotational flow air flow, can increase the air mass flow of whole head, widens load regulation range; The present invention is provided with venturi-type premixed section, and wherein converging transition is injected fuel with the guiding air, realizes that fuel fully mixes with the quick of air; Divergent segment is to adapt to fuel-air diffusion needs.The present invention can realize that fuel fully mixes with the quick of air, reaches the purpose that reduces pollutant emission in the combustion process in quite wide load regulation range.
Description of drawings
Fig. 1 is principles of construction figure of the present invention.
Fig. 2 is the vertical section structural map of first embodiment of the invention.
Fig. 3 is the right view of Fig. 2.
Fig. 4 is the vertical section structural map of second embodiment of the invention.
Fig. 5 is the right view of Fig. 4.
Fig. 6 is the vertical section structural map of third embodiment of the invention.
Fig. 7 is the right view of Fig. 6.
Among the figure: 1 venturi-type premixed section; The 1a converging transition; 1b throat; The 1c divergent segment; 2 twin-stage axial swirlers; All cyclone structures in the 2a; 2b periphery cyclone structure; 3 air flow circuits; 4 fuel nozzles.
The specific embodiment
It is as shown in Figure 1 that the bispin that is provided with venturi-type premixed section of the present invention flows its theory structure of burner, and it has: the fuel nozzle 4 that is arranged at tubular burner body center; With surround fuel nozzle 4 and with the air flow circuit 3 of the ring-type of fuel nozzle 4 coaxial arrangement; Air flow circuit 3 downstream connect venturi-type premixed section 1; Arrange twin-stage axial swirler 2 in the air flow circuit 3 at venturi-type premixed section 1 upper reaches.Characteristic of the present invention is: the venturi-type that has been coupled premixed section 1 and twin-stage axial swirler 2, wherein fuel nozzle 4 exit end faces are arranged in the 1b of throat of the venturi-type premixed section after the coupling.
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Embodiment one
See also Fig. 2 and Fig. 3, in the first embodiment of the invention, following structure arranged:
The center configuration fuel nozzle 4 of the burner body of tubular; The periphery of fuel nozzle 4 is an air flow circuit 3, this air flow circuit 3 and said fuel nozzle 4 coaxial arrangement; The downstream of air flow circuit 3 are venturi-type premixed section 1; In the air flow circuit 3 at venturi-type premixed section 1 upper reaches, twin-stage axial swirler 2 is set; The interior all cyclone structure 2a and the periphery cyclone structure 2b of twin-stage axial swirler 2 all adopt blade construction; Fuel nozzle 4 exit end faces are arranged in the 1b of throat of venturi-type premixed section.
Blade tangential among the present invention can be identical, also can be opposite.Present embodiment and Fig. 2 and Fig. 3 are to be example on the contrary with the tangential.
Embodiment two
See also Fig. 4 and Fig. 5, in the second embodiment of the invention, following structure arranged:
The center configuration fuel nozzle 4 of the burner body of tubular; The periphery of fuel nozzle 4 is an air flow circuit 3, this air flow circuit 3 and said fuel nozzle 4 coaxial arrangement; The downstream of air flow circuit 3 are venturi-type premixed section 1; In the air flow circuit 3 at venturi-type premixed section 1 upper reaches, twin-stage axial swirler 2 is set; The interior all cyclone structure 2a and the periphery cyclone structure 2b of twin-stage axial swirler 2 all adopt the pore structure of cutting sth. askew; Fuel nozzle 4 exit end faces are arranged in the 1b of throat of venturi-type premixed section.
The tangential, hole of cutting sth. askew among the present invention can be identical, also can be opposite.Present embodiment and Fig. 4 and Fig. 5 are to be example on the contrary with the tangential.
Embodiment three
See also Fig. 6 and Fig. 7, in the third embodiment of the invention, following structure arranged:
The center configuration fuel nozzle 4 of the burner body of tubular; The periphery of fuel nozzle 4 is an air flow circuit 3, this air flow circuit 3 and said fuel nozzle 4 coaxial arrangement; The downstream of air flow circuit 3 are venturi-type premixed section 1; In the air flow circuit 3 at venturi-type premixed section 1 upper reaches, twin-stage axial swirler 2 is set; Interior all cyclone structure 2a of twin-stage axial swirler 2 adopt the pore structure of cutting sth. askew, and periphery cyclone structure 2b adopts blade construction; Fuel nozzle 4 exit end faces are arranged in the 1b of throat of venturi-type premixed section.
The tangential of cut sth. askew hole and blade among the present invention can be identical, also can be opposite.Present embodiment and Fig. 6 and Fig. 7 are to be example on the contrary with the tangential.
Claims (7)
1. a bispin that is provided with venturi-type premixed section flows burner, includes:
Be arranged at the fuel nozzle of tubular burner body center;
Surround said fuel nozzle and with the air flow circuit of the ring-type of said fuel nozzle coaxial arrangement;
The air flow circuit downstream connect venturi-type premixed section;
The twin-stage axial swirler of all cyclone structures and periphery cyclone structure in being provided with in the air flow circuit at the venturi-type premixed section upper reaches;
The fuel nozzle exit end face is arranged on the throat of venturi-type premixed section.
2. bispin stream burner according to claim 1, wherein, the interior all cyclone structures and the periphery cyclone structure of twin-stage axial swirler are blade construction.
3. bispin stream burner according to claim 2, wherein, the blade of interior all cyclone structures of twin-stage axial swirler is identical with the tangential of the blade of periphery cyclone structure or opposite.
4. bispin stream burner according to claim 1, wherein, the interior all cyclone structures and the periphery cyclone structure of twin-stage axial swirler are the pore structure of cutting sth. askew.
5. bispin stream burner according to claim 4, wherein, the tangential in the hole of cutting sth. askew of the cut sth. askew hole and the periphery cyclone structure of interior all cyclone structures of twin-stage axial swirler is identical or opposite.
6. bispin stream burner according to claim 1, wherein, interior all cyclone structures of twin-stage axial swirler are the pore structure of cutting sth. askew, the periphery cyclone structure is a blade construction.
7. bispin stream burner according to claim 6, wherein, the tangential of the cut sth. askew hole and the blade of twin-stage axial swirler is identical or opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101441313A CN102809156A (en) | 2011-05-31 | 2011-05-31 | Double-rotational-flow burner with Venturi pipe type premixing section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101441313A CN102809156A (en) | 2011-05-31 | 2011-05-31 | Double-rotational-flow burner with Venturi pipe type premixing section |
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| CN102809156A true CN102809156A (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101441313A Pending CN102809156A (en) | 2011-05-31 | 2011-05-31 | Double-rotational-flow burner with Venturi pipe type premixing section |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836647A (en) * | 2014-02-27 | 2014-06-04 | 中国科学院工程热物理研究所 | Venturi tube flow channel wall face structure |
| CN103900070A (en) * | 2014-03-25 | 2014-07-02 | 成都发动机（集团）有限公司 | Movable mixed-burning steam generating device |
| CN104595929A (en) * | 2014-12-01 | 2015-05-06 | 成都发动机（集团）有限公司 | Rotational flow water film cooling type combustion chamber |
| CN105042593A (en) * | 2015-08-27 | 2015-11-11 | 武汉奥杰科技股份有限公司 | Gas combustion system |
| CN105716113A (en) * | 2016-02-06 | 2016-06-29 | 中国科学院工程热物理研究所 | Double-cyclone premixing burner |
| CN105738139A (en) * | 2016-02-06 | 2016-07-06 | 中国科学院工程热物理研究所 | Combustor and combustion testing method |
| CN105928008A (en) * | 2016-06-08 | 2016-09-07 | 南京航空航天大学 | Natural gas low-pollution combustion chamber based on lean semi-premixed combustion |
| CN106907709A (en) * | 2017-02-23 | 2017-06-30 | 中国科学院工程热物理研究所 | A kind of swirling number and the adjustable nozzle of turbulivity, nozzle array and burner |
| CN109084330A (en) * | 2018-07-09 | 2018-12-25 | 西北工业大学 | The loopful combustion chamber that a kind of pass cyclone and pass eddy flow type are constituted |
| CN109084329A (en) * | 2018-07-05 | 2018-12-25 | 西北工业大学 | A kind of multiple spot direct injection combustion chamber head construction |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0833107A1 (en) * | 1996-09-26 | 1998-04-01 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" | Aerodynamic fuel-air mixture injection device |
| CN101435585A (en) * | 2008-11-28 | 2009-05-20 | 北京大学 | Gas turbine combined type fuel evaporating and atomizing combustion apparatus |
| CN101788157A (en) * | 2010-01-26 | 2010-07-28 | 北京航空航天大学 | Low-pollution combustion chamber provided with premixing and pre-evaporating ring pipe |
| CN102183040A (en) * | 2010-01-08 | 2011-09-14 | 通用电气公司 | Combustor assembly for a turbine engine that mixes combustion products with purge air |
-
2011
- 2011-05-31 CN CN2011101441313A patent/CN102809156A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0833107A1 (en) * | 1996-09-26 | 1998-04-01 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation "Snecma" | Aerodynamic fuel-air mixture injection device |
| CN101435585A (en) * | 2008-11-28 | 2009-05-20 | 北京大学 | Gas turbine combined type fuel evaporating and atomizing combustion apparatus |
| CN102183040A (en) * | 2010-01-08 | 2011-09-14 | 通用电气公司 | Combustor assembly for a turbine engine that mixes combustion products with purge air |
| CN101788157A (en) * | 2010-01-26 | 2010-07-28 | 北京航空航天大学 | Low-pollution combustion chamber provided with premixing and pre-evaporating ring pipe |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836647A (en) * | 2014-02-27 | 2014-06-04 | 中国科学院工程热物理研究所 | Venturi tube flow channel wall face structure |
| CN103900070A (en) * | 2014-03-25 | 2014-07-02 | 成都发动机（集团）有限公司 | Movable mixed-burning steam generating device |
| CN103900070B (en) * | 2014-03-25 | 2016-05-18 | 成都发动机（集团）有限公司 | The mixed combustion of a kind of packaged type steam raising plant |
| CN104595929A (en) * | 2014-12-01 | 2015-05-06 | 成都发动机（集团）有限公司 | Rotational flow water film cooling type combustion chamber |
| CN105042593A (en) * | 2015-08-27 | 2015-11-11 | 武汉奥杰科技股份有限公司 | Gas combustion system |
| CN105738139A (en) * | 2016-02-06 | 2016-07-06 | 中国科学院工程热物理研究所 | Combustor and combustion testing method |
| CN105716113A (en) * | 2016-02-06 | 2016-06-29 | 中国科学院工程热物理研究所 | Double-cyclone premixing burner |
| CN105716113B (en) * | 2016-02-06 | 2019-03-12 | 中国科学院工程热物理研究所 | Bispin premix burner |
| CN105928008A (en) * | 2016-06-08 | 2016-09-07 | 南京航空航天大学 | Natural gas low-pollution combustion chamber based on lean semi-premixed combustion |
| CN106907709A (en) * | 2017-02-23 | 2017-06-30 | 中国科学院工程热物理研究所 | A kind of swirling number and the adjustable nozzle of turbulivity, nozzle array and burner |
| CN106907709B (en) * | 2017-02-23 | 2019-08-16 | 中国科学院工程热物理研究所 | A kind of swirling number and the adjustable nozzle of turbulivity, nozzle array and burner |
| CN109084329A (en) * | 2018-07-05 | 2018-12-25 | 西北工业大学 | A kind of multiple spot direct injection combustion chamber head construction |
| CN109084330A (en) * | 2018-07-09 | 2018-12-25 | 西北工业大学 | The loopful combustion chamber that a kind of pass cyclone and pass eddy flow type are constituted |
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Application publication date: 20121205 |