CN204176683U - A kind of gas turbine poor fuel porous injection nozzle and gas turbine - Google Patents
A kind of gas turbine poor fuel porous injection nozzle and gas turbine Download PDFInfo
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- CN204176683U CN204176683U CN201420562240.6U CN201420562240U CN204176683U CN 204176683 U CN204176683 U CN 204176683U CN 201420562240 U CN201420562240 U CN 201420562240U CN 204176683 U CN204176683 U CN 204176683U
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- hollow channel
- fuel
- injection nozzle
- guide vane
- porous injection
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Abstract
The utility model relates to gas turbine technology field, is specifically related to a kind of poor fuel porous injection nozzle and gas turbine.This poor fuel porous injection nozzle comprises centerbody and is arranged on the cyclone on centerbody, the first hollow channel for transfer the fuel is provided with in described centerbody, described cyclone comprises cyclone outer cover, premix air intake is provided with in one end of cyclone outer cover, the other end is provided with multiple guide vane, described guide vane is provided with radial jet nozzle, and described radial jet nozzle is communicated with the first hollow channel by the second hollow channel; The 3rd hollow channel is provided with in described cyclone outer cover, described 3rd hollow channel is communicated with the second hollow channel, 3rd hollow channel sidewall is provided with at least one circumferential spout between adjacent described guide vane, make the mixed proportion of the fuel in nozzle flow channel and air more even, reduce pollutant emission.
Description
Technical field
The utility model relates to gas turbine technology field, particularly relates to a kind of poor fuel porous injection nozzle and gas turbine.
Background technology
At present, gas turbine is the visual plant of clean fossil energy.Along with the increasingly stringent that countries in the world require gas turbine pollutant emission standard, the technology that reduction nitrogen oxide (NOx) is discharged becomes the key strengthening Gas Turbine Market competitiveness.
The formation mechanism of NOx mainly contains following three kinds: heating power type, fuel type and Quick-type.For the gas turbine of current world, the generation of NOx is based on heating power type mechanism.The peak temperature reducing combustion chamber flame is the main method reducing thermal NO x.A kind of measure of extensive use is poor premixed combustion technology, for premixed combustion, the blending before tissue burning of air and fuel is most important, the uniformity coefficient of air and fuel blending, the speed of mixing directly affect the time of staying of the equivalent proportion distribution of nozzle downstream and combustion product, and then affect pollutant, the especially generation of NOx.
In prior art, a kind of typical poor fuel porous injection nozzle adopts structure as shown in Figure 1-2, and nozzle is made up of pivot flange, cyclone, nozzle tip and different pipeline.Wherein fuel enters fuel inlet, by hollow channel, enters the hollow channel of gaseous fuel guide vane, finally from the ejection of gaseous fuel radial jet nozzle, with incoming air blending, and then participates in tissue burning.The weak point of this structure is, gaseous fuel jets is all arranged along blade radial, at the large radius of blade (i.e. edge) place, between different leaves, corresponding fuel nozzle ports is distant, fuel jet is easily caused to run through not enough, and at blade minor radius (i.e. centre) place, the corresponding fuel nozzle ports close together of different leaves, fuel jet is easily caused to intersect, this can cause the air between adjacent blades and fuel blending uneven, and then pollutant in combustion process can be had influence on, the especially generation of NOx.
Therefore, for above deficiency, need a kind of mixed proportion of the fuel in nozzle flow channel and air that can make more even, reduce the poor fuel porous injection nozzle of pollutant emission.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model solves because existing poor fuel jet rose causes fuel shortage because the fuel depth of penetration that spray from radial jet nozzle is inadequate, the problem that the mixed proportion of fuel and air is uneven.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of poor fuel porous injection nozzle, comprise centerbody and be arranged on the cyclone on centerbody, the first hollow channel for transfer the fuel is provided with in described centerbody, described cyclone comprises cyclone outer cover, is provided with premix air intake in one end of cyclone outer cover, and the other end is provided with multiple guide vane, described guide vane is provided with radial jet nozzle, and described radial jet nozzle is communicated with the first hollow channel by the second hollow channel; Be provided with the 3rd hollow channel in described cyclone outer cover, described 3rd hollow channel is communicated with the second hollow channel, and the 3rd hollow channel sidewall is provided with at least one circumferential spout between adjacent described guide vane.
Wherein, described 3rd hollow channel is located on the inside of cyclone outer cover.
Wherein, on the 3rd hollow channel sidewall that described circumferential spout is corresponding between adjacent described guide vane 1/4 angle and 3/4 angle.
Wherein, the quantity of described circumferential spout is not more than 5.
Wherein, the diameter of described circumferential spout is 1-2mm.
Wherein, be provided with swirler blades in described premix air intake, described swirler blades is used for making premix air form backflow in cyclone outer cover.
Wherein, described swirler blades and guide vane are structure as a whole.
Wherein, described guide vane is radially provided with multiple radial jet nozzle, and described radial jet nozzle and circumferential spout carry out fuel mix in same plane.
Wherein, one end of described centerbody is provided with pivot flange, and described pivot flange is provided with the fuel inlet be communicated with the first hollow channel.
The utility model also provides a kind of gas turbine, and it comprises described poor fuel porous injection nozzle.
(3) beneficial effect
Technique scheme of the present utility model has following beneficial effect: the utility model poor fuel porous injection nozzle increases circumferential spout between adjacent guide vane, and is introduced by the fuel in the second hollow channel by the 3rd hollow channel be arranged in cyclone outer cover; Nozzle flow channel outer side center regional fuel is effectively increased by radial jet nozzle and circumferential spout, make the ratio of the fuel in nozzle flow channel and air more even, solve the problem of the fuel shortage caused not due to the fuel depth of penetration, effectively reduce the discharge of pollutant.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional view of prior art poor fuel porous injection nozzle;
Fig. 2 is the B-B sectional view of Fig. 1;
Fig. 3 is the longitudinal sectional view of the utility model embodiment poor fuel porous injection nozzle;
Fig. 4 is the C-C sectional view of Fig. 3.
Wherein, 1: centerbody; 2: cyclone; 3: guide vane; 4: pivot flange; 5: incoming air; 6: radial fuel jet; 7: circumferential fuel jet; 11: the first hollow channels; 12: nozzle tip; 21: cyclone outer cover; 22: premix air intake; 23: the three hollow channels; 24: circumferential spout; 25: swirler blades; 31: radial jet nozzle; 32: the second hollow channels; 41: fuel inlet.
Detailed description of the invention
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but can not be used for limiting scope of the present utility model.
In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more; Except as otherwise noted, the implication of " nick shaped " is the shape except cross section is concordant.Term " on ", D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
As shown in Figure 3-4, the present embodiment provides a kind of poor fuel porous injection nozzle, comprise centerbody 1 and be arranged on the cyclone 2 on centerbody 1, the first hollow channel 11 for transfer the fuel is provided with in centerbody 1, cyclone 2 comprises cyclone outer cover 21, premix air intake 22 is provided with in one end of cyclone outer cover 21, the other end is provided with multiple guide vane 3, guide vane 3 is provided with multiple radial jet nozzle 31, and multiple radial jet nozzle 31 is all communicated with the first hollow channel 11 by the second hollow channel 32; The 3rd hollow channel 23 is provided with in cyclone outer cover 21,3rd hollow channel 23 is communicated with the second hollow channel 32,3rd hollow channel 23 sidewall is provided with at least one circumferential spout 24 between adjacent guide vanes 3, effectively increase the fuel in nozzle flow channel outer side center region, solving this place due to radial jet nozzle 31 sprays the problem of the fuel shortage that the fuel depth of penetration causes not, make the fuel-air ratio mixing in nozzle flow channel more even, reduce the discharge of pollutant.
In the present embodiment, the 3rd hollow channel 23 is located on the inside of cyclone outer cover 21, the shape of the visual cyclone outer cover 21 of shape of the 3rd hollow channel 23 and changing, it can be circle, annular, ellipse or rectangle, with the uniformity facilitating the pipe arrangement in cyclone outer cover 21 and fuel to flow.
Further, circumferential spout 24 between adjacent guide vanes 3, and is evenly distributed on both the 3rd hollow channel 23 sidewalls between 1/4 angle and 3/4 angle corresponding to (i.e. 25% ~ 75% place of adjacent two guide vane 3 spacing).Poor fuel nozzle in prior art, as shown in Figure 1-2, the depth of penetration of radial jet nozzle 31 outside nozzle is generally 0% ~ 25% and 75% ~ 100% place of adjacent two guide vane 3 spacing.And the problem that circumferential spout 24 just can improve the nozzle flow channel outer side center region deficiency caused because the fuel depth of penetration is low is increased at 25% ~ 75% place of adjacent two guide vane 3 spacing.
Accordingly, the quantity of circumference spout 24 is not more than 5, such as, the quantity of circumference spout 24 can be 3, be evenly arranged in 30% ~ 70% place of adjacent two guide vane 3 spacing, radially can expand after spraying via circumferential spout 24, increase gaseous fuel at 30% ~ 70% place of adjacent two guide vane 3 spacing; Circumference spout 24 at comparatively short distance intramedullary expansion to 25% ~ 75% place, can avoid the problem that the fuel concentration caused due to expansion factor increases.
Preferably, the diameter of circumferential spout 24 is 1-2mm, and its center line is perpendicular to local wall, effectively can increase the depth of penetration and mix with radial jet nozzle 31 fuel and air.
Be provided with swirler blades 25 in premix air intake 22, swirler blades 25 forms backflow for making premix air (that is, incoming air 5) in cyclone outer cover 21.
Wherein, swirler blades 25 and guide vane 3 are structure as a whole, and save material, improve mobile performance.Guide vane 3 is radially provided with multiple radial jet nozzle 31, and radial jet nozzle 31 and circumferential spout 24 carry out fuel mix in same plane, and radial jet nozzle 31 and circumferential spout 24 are positioned at same axial positions, to mix.
In addition, one end of centerbody 1 is provided with pivot flange 4, and pivot flange 4 is provided with the fuel inlet 41 be communicated with the first hollow channel 11, is provided with nozzle tip 12 at the other end of centerbody 1.
The utility model also provides a kind of gas turbine, and it comprises this poor fuel porous injection nozzle, and this gas turbine can make the mixed proportion of the fuel in nozzle flow channel and air more even, reduces the discharge of pollutant.
The course of work of the utility model poor fuel porous injection nozzle is: first fuel enter this nozzle from the fuel inlet 41 be positioned at pivot flange 4, the second hollow channel 32 being arranged at guide vane 3 inside is then entered by the first hollow channel 11, wherein a part of fuel sprays from the radial jet nozzle 31 be arranged at guide vane 3 and forms circumferential fuel jet 7, with incoming air 5 blending; A part of fuel enters the 3rd hollow channel 23 through the second hollow channel 32 in addition, then circumferentially flows, and finally forms radial fuel jet 6 in the ejection of circumferential spout 24 place, and with incoming air 5 blending.Because circumferential spout 24 is arranged in the large radius side of guide vane 3, the region arrived at is difficult near the maximum and circumferential fuel jet 7 of the circumferential spacing of adjacent guide vanes 3, therefore fuel shortage herein can be made up through the radial fuel jet 6 of circumferential spout 24, thus solve traditional poor fuel porous injection nozzle air and the uneven problem of fuel blending.
To sum up, the utility model poor fuel porous injection nozzle increases circumferential spout between adjacent guide vane, and is introduced by the fuel in the second hollow channel by the 3rd hollow channel be arranged in cyclone outer cover; Nozzle flow channel outer side center regional fuel is effectively increased by radial jet nozzle and circumferential spout, make the mixed proportion of the fuel in nozzle flow channel and air more even, solve the problem of the fuel shortage caused not due to the fuel depth of penetration, effectively reduce the discharge of pollutant.
Embodiment of the present utility model provides for the purpose of example and description, and is not exhaustively or by the utility model be limited to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present utility model and practical application are better described, and enables those of ordinary skill in the art understand the utility model thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (10)
1. a poor fuel porous injection nozzle, comprise centerbody (1) and be arranged on the cyclone (2) on centerbody (1), the first hollow channel (11) for transfer the fuel is provided with in described centerbody (1), described cyclone (2) comprises cyclone outer cover (21), premix air intake (22) is provided with in one end of cyclone outer cover (21), the other end is provided with multiple guide vane (3), described guide vane (3) is provided with radial jet nozzle (31), described radial jet nozzle (31) is communicated with the first hollow channel (11) by the second hollow channel (32), it is characterized in that, the 3rd hollow channel (23) is provided with in described cyclone outer cover (21), described 3rd hollow channel (23) is communicated with the second hollow channel (32), and the 3rd hollow channel (23) sidewall is positioned between adjacent described guide vane (3) and is provided with at least one circumferential spout (24).
2. poor fuel porous injection nozzle according to claim 1, is characterized in that, described 3rd hollow channel (23) is located on the inside of cyclone outer cover (21).
3. poor fuel porous injection nozzle according to claim 2, it is characterized in that, described circumferential spout (24) is positioned on the 3rd hollow channel (23) sidewall corresponding between adjacent described guide vane (3) 1/4 angle and 3/4 angle.
4. poor fuel porous injection nozzle according to claim 3, is characterized in that, the quantity of described circumferential spout (24) is not more than 5.
5. poor fuel porous injection nozzle according to claim 3, is characterized in that, the diameter of described circumferential spout (24) is 1-2mm.
6. poor fuel porous injection nozzle according to claim 1, it is characterized in that, be provided with swirler blades (25) in described premix air intake (22), described swirler blades (25) forms eddy flow for making premix air in cyclone outer cover (21).
7. poor fuel porous injection nozzle according to claim 6, is characterized in that, described swirler blades (25) and guide vane (3) are structure as a whole.
8. poor fuel porous injection nozzle according to claim 7, it is characterized in that, described guide vane (3) is radially provided with multiple radial jet nozzle (31), and described radial jet nozzle (31) and circumferential spout (24) carry out fuel mix in same plane.
9. poor fuel porous injection nozzle according to claim 1, it is characterized in that, one end of described centerbody (1) is provided with pivot flange (4), and described pivot flange (4) is provided with the fuel inlet (41) be communicated with the first hollow channel (11).
10. a gas turbine, is characterized in that, comprises poor fuel porous injection nozzle as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420562240.6U CN204176683U (en) | 2014-09-26 | 2014-09-26 | A kind of gas turbine poor fuel porous injection nozzle and gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420562240.6U CN204176683U (en) | 2014-09-26 | 2014-09-26 | A kind of gas turbine poor fuel porous injection nozzle and gas turbine |
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| Publication Number | Publication Date |
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| CN204176683U true CN204176683U (en) | 2015-02-25 |
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| CN201420562240.6U Active CN204176683U (en) | 2014-09-26 | 2014-09-26 | A kind of gas turbine poor fuel porous injection nozzle and gas turbine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107923620A (en) * | 2015-08-26 | 2018-04-17 | 通用电气公司 | The system and method for multi fuel pre-mixing nozzle with integral liquid injector/evaporator |
| WO2018082539A1 (en) * | 2016-11-01 | 2018-05-11 | Beijing Huatsing Gas Turbine & Igcc Technology Co., Ltd | Premix fuel nozzle for a gas turbine and combustor |
| CN110094758A (en) * | 2018-01-30 | 2019-08-06 | 通用电气公司 | Burner and operation method for improved discharge and durability |
| CN113551265A (en) * | 2021-08-11 | 2021-10-26 | 中国联合重型燃气轮机技术有限公司 | Fuel nozzle and gas turbine |
| CN114248029A (en) * | 2021-12-29 | 2022-03-29 | 佛山市美锻制造技术有限公司 | Method for manufacturing nozzle of combustion chamber of gas turbine |
| CN114909676A (en) * | 2022-04-28 | 2022-08-16 | 西北工业大学 | Can regulate and control single-stage axial swirler of whirl intensity |
| CN115183276A (en) * | 2022-07-25 | 2022-10-14 | 清航空天(北京)科技有限公司 | Fuel supply assembly, engine combustion chamber structure and engine |
-
2014
- 2014-09-26 CN CN201420562240.6U patent/CN204176683U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107923620A (en) * | 2015-08-26 | 2018-04-17 | 通用电气公司 | The system and method for multi fuel pre-mixing nozzle with integral liquid injector/evaporator |
| WO2018082539A1 (en) * | 2016-11-01 | 2018-05-11 | Beijing Huatsing Gas Turbine & Igcc Technology Co., Ltd | Premix fuel nozzle for a gas turbine and combustor |
| CN110094758A (en) * | 2018-01-30 | 2019-08-06 | 通用电气公司 | Burner and operation method for improved discharge and durability |
| US11221143B2 (en) | 2018-01-30 | 2022-01-11 | General Electric Company | Combustor and method of operation for improved emissions and durability |
| CN113551265A (en) * | 2021-08-11 | 2021-10-26 | 中国联合重型燃气轮机技术有限公司 | Fuel nozzle and gas turbine |
| CN114248029A (en) * | 2021-12-29 | 2022-03-29 | 佛山市美锻制造技术有限公司 | Method for manufacturing nozzle of combustion chamber of gas turbine |
| CN114909676A (en) * | 2022-04-28 | 2022-08-16 | 西北工业大学 | Can regulate and control single-stage axial swirler of whirl intensity |
| CN115183276A (en) * | 2022-07-25 | 2022-10-14 | 清航空天(北京)科技有限公司 | Fuel supply assembly, engine combustion chamber structure and engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Lean fuel multi-hole jet nozzle of gas turbine and gas turbine Effective date of registration: 20161104 Granted publication date: 20150225 Pledgee: Tsinghua Holdings Co., Ltd. Pledgor: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. Registration number: 2016990000853 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20191211 Granted publication date: 20150225 Pledgee: Tsinghua Holdings Co., Ltd. Pledgor: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. Registration number: 2016990000853 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191223 Address after: 102209 Beijing Changping District in the future of the national electric investment group Park in the future science city south of Beijing Patentee after: China United heavy-duty gas turbine technology Co., Ltd. Address before: 100084, Beijing, Haidian District science and Technology Park, Tsinghua Science and technology building, block C, 10 Patentee before: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |