CN103148514A - Two-stage radial lean combustion pre-mixing type low-emission gas nozzle - Google Patents
Two-stage radial lean combustion pre-mixing type low-emission gas nozzle Download PDFInfo
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- CN103148514A CN103148514A CN2013101103212A CN201310110321A CN103148514A CN 103148514 A CN103148514 A CN 103148514A CN 2013101103212 A CN2013101103212 A CN 2013101103212A CN 201310110321 A CN201310110321 A CN 201310110321A CN 103148514 A CN103148514 A CN 103148514A
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Abstract
The invention discloses a two-stage radial lean combustion pre-mixing type low-emission gas nozzle, which is technically characterized by comprising a shell and a whirlcone, wherein a gas flow channel is arranged in the shell, the gas flow channel is connected with a pressing-out device, gas outlet holes are uniformly distributed in the end surface of the pressing-out device, the pressing-out device is arranged in the whirlcone, the periphery of the pressing-out device on the whirlcone is provided with an annular cavity, the shell is provided with a gas inlet channel communicated with the annular cavity, and the whirlcone is provided with a gas discharge channel communicated with the annular cavity. According to the gas nozzle disclosed by the invention, the full mixing of gas and air can be guaranteed, the gas is combusted more stably, and pollutant emission is lower.
Description
Technical field:
The invention belongs to the energy source and power industry, be specifically related to the radially premixed low emission gas nozzle of fuel-sean of a kind of two-stage, it utilizes the lean fuel premixed combustion technology by adopting two-stage radial vortex structure, realize reducing the gas turbine pollutant emission, improve the gas turbine capability of environmental protection.
Background technology:
For guaranteeing the good combustion stability of gas-turbine combustion chamber, diffusion combustion is generally adopted in the combustion chamber, i.e. combustion gas and air are not pre-mixed, but the burning while mixing.This combustion system combustion gas can not fully mix with air, and discharged nitrous oxides is too high, causes serious environmental pollution, and the poor stability of burning.
Summary of the invention:
The invention provides the radially premixed low emission gas nozzle of fuel-sean of a kind of two-stage, satisfy the purpose of gas turbine smooth combustion and reduction pollutant emission.
The objective of the invention is to realize in the following manner: this two-stage is the premixed low emission gas nozzle of fuel-sean radially, the technical scheme that adopts is: comprise housing and cyclone, be provided with gas channel in described housing, gas channel connects detrusor, the end face of detrusor is evenly equipped with venthole, detrusor is in cyclone, the periphery that is in detrusor on cyclone is annular chamber, housing is provided with the gas inlet passage that communicates with annular chamber, and cyclone is provided with the fuel gas exhaust passage that communicates with annular chamber.
preferably, be provided with the dividing plate of annular in described cyclone, dividing plate is separated into annular chamber and is followed successively by from outside to inside the first annular chamber and the second annular chamber, the second annular chamber communicates with the 3rd annular chamber of cyclone rear side, the gas inlet passage is divided into the first gas inlet passage and the second gas inlet passage that communicates with the first annular chamber and the second annular chamber respectively, cyclone is provided with the first fuel gas exhaust passage and the second fuel gas exhaust passage that communicates with the first annular chamber and the 3rd annular chamber respectively, two fuel gas exhaust passage ends close with the annular chamber that communicates separately are respectively the first combustion gas delivery port and the second combustion gas delivery port, away from being respectively the first gas outlet and the second gas outlet with an end of the annular chamber that communicates separately.
Preferably, the inner circumferential that is in the 3rd annular chamber on described cyclone is distributed with angling hole, and the rear side that is in detrusor in cyclone is provided with cup shell, and angling hole communicates with the chamber at cup shell place, and the side face of cup shell is evenly equipped with passage.
Preferably, described dividing plate is quincunx.
Preferably, described housing and cyclone are connected to form the first annular chamber by camber member, and the shoulder place of cyclone is covered with capping and forms the 3rd annular chamber.
The invention has the beneficial effects as follows: this two-stage is the premixed low emission gas nozzle of fuel-sean radially, can guarantee fully mixing of combustion gas and air, burns more stable, and pollutant emission is lower.
Description of drawings:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the side view of Fig. 3.
Fig. 3 is the structural representation of cyclone of the present invention.
Fig. 4 is the structural representation of detrusor of the present invention.
The specific embodiment:
With reference to each accompanying drawing, this two-stage is the premixed low emission gas nozzle of fuel-sean radially, comprise housing 1 and cyclone 2, be provided with gas channel 4 in described housing 1, gas channel 4 connects detrusor 3, and the end face of detrusor 3 is evenly equipped with venthole, detrusor 3 is in cyclone 2, the periphery that is in detrusor 3 on cyclone 2 is annular chamber, and housing 1 is provided with the gas inlet passage that communicates with annular chamber, and cyclone 2 is provided with the fuel gas exhaust passage that communicates with annular chamber.be provided with the dividing plate 16 of annular in cyclone 2, dividing plate 16 is separated into annular chamber and is followed successively by from outside to inside the first annular chamber 6 and the second annular chamber 5, the second annular chamber 5 communicates with the 3rd annular chamber 7 of cyclone 2 rear sides, the gas inlet passage is divided into the first gas inlet passage 12 and the second gas inlet passage 13 that communicates with the first annular chamber 6 and the second annular chamber 5 respectively, cyclone 2 is provided with the first fuel gas exhaust passage and the second fuel gas exhaust passage that communicates with the first annular chamber 6 and the 3rd annular chamber 7 respectively, two fuel gas exhaust passage ends close with the annular chamber that communicates separately are respectively the first combustion gas delivery port 18 and the second combustion gas delivery port 17, away from being respectively the first gas outlet 9 and the second gas outlet 10 with an end of the annular chamber that communicates separately.The inner circumferential that is in the 3rd annular chamber 7 on cyclone 2 is distributed with angling hole 11, and the rear side that is in detrusor 3 in cyclone 2 is provided with cup shell 8, and angling hole 11 communicates with the chamber at cup shell 8 places, and the side face of cup shell 8 is evenly equipped with passage.Dividing plate 16 is quincunx.Housing 1 and cyclone 2 are connected to form the first annular chamber 6 by camber member 14, and the shoulder place of cyclone 2 is covered with capping 15 and forms the 3rd annular chambers 7.
The combustion gas of first order gas circuit enters the first annular chamber 6 through the first gas inlet passage 12, then enters the first fuel gas exhaust passage by the first combustion gas delivery port 18, flow out from the first gas outlet 9 at last, and with the first annular chamber 6 in the abundant premix of air.second level gas circuit combustion gas enters the second annular chamber 5 and the 3rd annular chamber 7 successively through the second gas inlet passage 13, enter the second fuel gas exhaust passage by the second combustion gas delivery port 17 again, flow out from the second gas outlet 10 at last, and with the second annular chamber 5 in the abundant premix of air, form the gaseous mixture of air and combustion gas, meanwhile extraneous air enters gas channel 4 and flows out by the venthole on detrusor 3 and again mix with gaseous mixture, the angling hole 11 of the circumferential distribution on cyclone 2 also can import extraneous air in cyclone 2 and mix with gaseous mixture in addition, combustion gas makes both mixing more abundant with repeatedly mixing of air, make fuel gas buring more thorough, improved the stability of burning, greatly reduced the discharging of pollutant.Quincuncial dividing plate 16 is used for separating the first annular chamber 6 and the second annular chamber 5, prevents from collaborating between two annular chambers, and the angling hole 11 that cyclone 2 circumferentially distributes is used for importing cold air, is used for mixing and the two-stage gas circuit gaseous mixture in cooling gas nozzle exit.
Claims (5)
1. a two-stage premixed low emission gas nozzle of fuel-sean radially, it is characterized in that: comprise housing and cyclone, be provided with gas channel in described housing, gas channel connects detrusor, the end face of detrusor is evenly equipped with venthole, and detrusor is in cyclone, and the periphery that is in detrusor on cyclone is annular chamber, housing is provided with the gas inlet passage that communicates with annular chamber, and cyclone is provided with the fuel gas exhaust passage that communicates with annular chamber.
2. a kind of two-stage as claimed in claim 1 premixed low emission gas nozzle of fuel-sean radially, it is characterized in that: the dividing plate that is provided with annular in cyclone, dividing plate is separated into annular chamber and is followed successively by from outside to inside the first annular chamber and the second annular chamber, the second annular chamber communicates with the 3rd annular chamber of cyclone rear side, the gas inlet passage is divided into the first gas inlet passage and the second gas inlet passage that communicates with the first annular chamber and the second annular chamber respectively, cyclone is provided with the first fuel gas exhaust passage and the second fuel gas exhaust passage that communicates with the first annular chamber and the 3rd annular chamber respectively, two fuel gas exhaust passage ends close with the annular chamber that communicates separately are respectively the first combustion gas delivery port and the second combustion gas delivery port, away from being respectively the first gas outlet and the second gas outlet with an end of the annular chamber that communicates separately.
3. a kind of two-stage as claimed in claim 2 premixed low emission gas nozzle of fuel-sean radially, it is characterized in that: the inner circumferential that is in the 3rd annular chamber on cyclone is distributed with angling hole, the rear side that is in detrusor in cyclone is provided with cup shell, angling hole communicates with the chamber at cup shell place, and the side face of cup shell is evenly equipped with passage.
4. a kind of two-stage as claimed in claim 2 premixed low emission gas nozzle of fuel-sean radially, it is characterized in that: dividing plate is quincunx.
5. a kind of two-stage as claimed in claim 2 premixed low emission gas nozzle of fuel-sean radially, it is characterized in that: housing and cyclone are connected to form the first annular chamber by camber member, and the shoulder place of cyclone is covered with capping and forms the 3rd annular chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101103212A CN103148514A (en) | 2013-04-01 | 2013-04-01 | Two-stage radial lean combustion pre-mixing type low-emission gas nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101103212A CN103148514A (en) | 2013-04-01 | 2013-04-01 | Two-stage radial lean combustion pre-mixing type low-emission gas nozzle |
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| CN103148514A true CN103148514A (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101103212A Pending CN103148514A (en) | 2013-04-01 | 2013-04-01 | Two-stage radial lean combustion pre-mixing type low-emission gas nozzle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424976A (en) * | 2017-09-05 | 2019-03-05 | 南方科技大学 | Flat boat changes combustion engine gas nozzle |
| CN111649354A (en) * | 2020-06-15 | 2020-09-11 | 江苏科技大学 | Three-cyclone classification cyclone and combustion chamber thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1407195B1 (en) * | 2001-07-13 | 2006-10-11 | Pratt & Whitney Canada Corp. | Premixing chamber for turbine combustor |
| CN101285592A (en) * | 2008-04-22 | 2008-10-15 | 北京航空航天大学 | Integral fuel jet axial swirler pre-mixing preevaporated low pollution combustion-chamber |
| CN102393028A (en) * | 2011-12-09 | 2012-03-28 | 中国船舶重工集团公司第七�三研究所 | Dry-type low-emission combustion chamber of natural gas fuel turbine |
| CN203162988U (en) * | 2013-04-01 | 2013-08-28 | 中国船舶重工集团公司第七�三研究所 | Two-stage radial lean burn pre-mix type low emission gas nozzle |
-
2013
- 2013-04-01 CN CN2013101103212A patent/CN103148514A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1407195B1 (en) * | 2001-07-13 | 2006-10-11 | Pratt & Whitney Canada Corp. | Premixing chamber for turbine combustor |
| CN101285592A (en) * | 2008-04-22 | 2008-10-15 | 北京航空航天大学 | Integral fuel jet axial swirler pre-mixing preevaporated low pollution combustion-chamber |
| CN102393028A (en) * | 2011-12-09 | 2012-03-28 | 中国船舶重工集团公司第七�三研究所 | Dry-type low-emission combustion chamber of natural gas fuel turbine |
| CN203162988U (en) * | 2013-04-01 | 2013-08-28 | 中国船舶重工集团公司第七�三研究所 | Two-stage radial lean burn pre-mix type low emission gas nozzle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424976A (en) * | 2017-09-05 | 2019-03-05 | 南方科技大学 | Flat boat changes combustion engine gas nozzle |
| CN109424976B (en) * | 2017-09-05 | 2021-07-02 | 深圳意动航空科技有限公司 | Flat aeroderivative gas nozzle |
| CN111649354A (en) * | 2020-06-15 | 2020-09-11 | 江苏科技大学 | Three-cyclone classification cyclone and combustion chamber thereof |
| CN111649354B (en) * | 2020-06-15 | 2022-03-29 | 江苏科技大学 | Three-cyclone classification cyclone and combustion chamber thereof |
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Application publication date: 20130612 |