CN106287816A - A kind of dry low emissions burner - Google Patents
A kind of dry low emissions burner Download PDFInfo
- Publication number
- CN106287816A CN106287816A CN201610662575.9A CN201610662575A CN106287816A CN 106287816 A CN106287816 A CN 106287816A CN 201610662575 A CN201610662575 A CN 201610662575A CN 106287816 A CN106287816 A CN 106287816A
- Authority
- CN
- China
- Prior art keywords
- boss portion
- hole
- spray boom
- dry low
- low emissions
- 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.)
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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
- F23R3/28—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
-
- 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
- F23R2900/03343—Pilot burners operating in premixed mode
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
The present invention relates to gas turbine dry low emission combustor design neck, particularly to a kind of dry low emissions burner.Dry low emissions burner includes: casing；Cyclone, has body and the first boss portion, and forms the first annular interior cavity of one end open between the inwall and the outer wall of body of casing, offers the first groove arranged side by side and the second groove on body outer wall in the axial direction；The first through hole and the second through hole it is provided with in the first groove；It is provided with third through-hole in the second groove；Fuel nozzle, has in the second circular boss portion, main fuel spray boom, fuel spray boom on duty, center cold air baffle plate and taper sheath；Burner inner liner, coaxial sleeve is located at the end, one end of the first boss portion dorsad in cyclone body portion.The dry low emissions burner of the present invention, can effectively realize fuel and mix and stable burning with the good of air, be possible to prevent tempering problem common in premixed combustion.
Description
Technical field
The present invention relates to gas turbine dry low emission combustor design neck, particularly to a kind of dry low emissions burning
Device.
Background technology
Dry low emissions combustion technology has broad application prospects on industry gas turbine, is reducing pollutant emission
Aspect has good performance, is the technical way of the satisfied environmental regulation of being correlated with both at home and abroad in gas turbine field.Abroad
A lot of manufacturers have formed unique dry low emissions combustion technology the most, and these technology have become as domestic gas turbine and enter
The main threshold enter market, taking part in international competition.Therefore, research and development have the dry low emissions combustion technology of independent intellectual property right,
For breaking external monopolization, promote China's gas turbine industry development significant.
Further, for current dry low emissions combustion technology, still exist and problem bag the most to be solved
Include: fuel in combustion chamber is not sufficiently good with the mixing of air, causes burning to be not sufficiently stable；Tempering shape often occurs during premixed combustion
Condition.
Summary of the invention
It is an object of the invention to provide a kind of dry low emissions burner, to solve at least one technical problem above-mentioned.
The technical scheme is that
A kind of dry low emissions burner, including:
Casing, cylindrically；
Cyclone, including body cylindrically and to be co-axially located at described body one end be circular first
Boss portion, the body of described cyclone is co-axially located at inside described casing, and by described first boss portion and described machine
Casket one end end seal is fixing to be connected, and forms one end open between the inwall and the outer wall of described body of described casing
First annular interior cavity, offers the first groove arranged side by side and the second groove on described body outer wall in the axial direction；Institute
Radially offer multiple spaced first through hole in stating the first groove, offer one second the most in the axial direction
Through hole；The third through-hole of one is radially offered at described second groove；
Fuel nozzle, have in the second circular boss portion, main fuel spray boom, fuel spray boom on duty, center cold air gear
Plate and taper sheath；Described second boss portion is connected with described first boss portion co-axial seal, and in described second boss portion
Portion is formed with the second annular cavity, and described second annular cavity has fuel inlet end；Described main fuel spray boom is fixedly installed on
In described second boss portion, one end connects with described second annular cavity, and the other end runs through described second through hole in the axial direction,
Extending in described first groove, described main fuel spray boom offers the fourth hole corresponding with described first lead to the hole site；Institute
State center cold air baffle plate to be co-axially located in the body of described cyclone, and with described body and described second boss portion
Constitute the 3rd annular cavity；Described fuel spray boom on duty sequentially passes through described second boss along described second boss portion central axis
Portion and described center cold air baffle plate, extend in the body of described cyclone；Described taper sheath passes through one end from described center
The side of the most described second boss portion of cold air baffle plate, coaxial sleeve is located at outside described fuel spray boom on duty, and with described
Two boss portion are tightly connected, and have annulus between other end end and described fuel spray boom outer ring surface on duty, and described in
Offer for the fifth hole by described 3rd annular cavity Yu described taper sheath inner space on heart cold air baffle plate；Described
Three through holes connect with described 3rd annular cavity；
Burner inner liner, coaxial sleeve is located at the end, one end of the most described first boss portion in described cyclone body portion.
Optionally, described first boss portion is bolted with described second boss portion.
Optionally, described second boss portion is provided with sealing ring with the junction of described first boss portion.
Optionally, the fourth hole on described main fuel spray boom is two rows, and described in two rows, fourth hole is the most also
Row are arranged, and fourth hole described in two rows is respectively positioned on the one side towards described first through hole of described main fuel spray boom.
Optionally, described first groove is identical and spaced apart with described second number of recesses.
Optionally, the quantity of described fifth hole is multiple, and with the center of circle of described center cold air baffle plate as the center of circle, in ring
Shape is distributed.
Optionally, the end, one end of the most described second boss portion of described taper sheath uniformly offers multiple clematis stem
Hole.
Invention effect:
The dry low emissions burner of the present invention, can effectively realize fuel and mix and stable burning with the good of air,
It is possible to prevent tempering problem common in premixed combustion.
Accompanying drawing explanation
Fig. 1 is the structural representation of dry low emissions burner of the present invention；
Fig. 2 is the sectional view of dry low emissions burner of the present invention；
Fig. 3 is the structural representation of cyclone in dry low emissions burner of the present invention；
Fig. 4 is the structural representation of fuel nozzle in dry low emissions burner of the present invention；
Fig. 5 is the structural representation of taper sheath end in dry low emissions burner of the present invention；
Fig. 6 be fuel in dry low emissions burner of the present invention, air flowing with mix schematic diagram；
Fig. 7 be the fuel of cyclone part in dry low emissions burner of the present invention, air flowing with mix schematic diagram.
Detailed description of the invention
Clearer for the purpose making the present invention implement, technical scheme and advantage, below in conjunction with in the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, the most identical or class
As label represent same or similar element or there is the element of same or like function.Described embodiment is the present invention
A part of embodiment rather than whole embodiments.The embodiment described below with reference to accompanying drawing is exemplary, it is intended to use
In explaining the present invention, and it is not considered as limiting the invention.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under not making creative work premise, broadly falls into the scope of protection of the invention.Under
Face combines accompanying drawing and is described in detail embodiments of the invention.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", "front", "rear",
The orientation of the instruction such as "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " or position relationship are for based on accompanying drawing institute
The orientation shown or position relationship, be for only for ease of and describe the present invention and simplify description rather than instruction or the dress of hint indication
Put or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that protect the present invention
The restriction of scope.
The present invention is described in further details by 1 to Fig. 7 below in conjunction with the accompanying drawings.
The invention provides a kind of dry low emissions burner, can include casing 4, cyclone 1, fuel nozzle 2 and
Burner inner liner 5.
Casing 4 cylindrically, can be known multiple applicable structure.
Cyclone 1 includes body 11 cylindrically and to be co-axially located at body 11 one end be circular first
Boss portion 12.
It is internal that body 11 is co-axially located at casing 4, and passes through bolt by the first boss portion 12 with end, casing 4 one end
It is sealedly and fixedly connected；And between the inwall and the outer wall of body 11 of casing 4, form the first annular interior cavity 13 of one end open,
Body 11 outer wall offers the first arranged side by side groove 14 and the second groove 15 in the axial direction；Edge in the first groove 14
Radial direction offers multiple spaced first through hole 141, offers second through hole 142 the most in the axial direction；?
Second groove 15 radially offers the third through-hole 151 of.Wherein, the first groove 14 and quantity of the second groove 15
Identical, and particular number can carry out the selection that is suitable for as required；Being preferably in the present embodiment and the most each arrange 6,6 first recessed
The quantity of groove 14 and 6 the second grooves 15 is crisscross arranged side by side.
Fuel nozzle 2 has in the second circular boss portion 21, main fuel spray boom 22, fuel spray boom 23 on duty, center
Cold air baffle plate 24 and taper sheath 25.Wherein, fuel nozzle 2 takes cell cube to design, and is connected with between cyclone 1,
Maintain easily, change and repair.
Second boss portion 21 is connected with the first boss portion 12 co-axial seal, it is preferable that the first boss portion 12 and the second boss
Portion 21 is attached by bolt, and is provided with sealing ring 3 in junction；Further, it is formed with inside the second boss portion 21
Second annular cavity 26, the second annular cavity 26 has fuel inlet end 261.
Main fuel spray boom 22 is fixedly installed in the second boss portion 21, and one end connects with the second annular cavity 26, the other end
Running through the second through hole 142 in the axial direction, extend in the first groove 14, main fuel spray boom 22 is offered and the first through hole 141
Put corresponding fourth hole 221.Equally, main fuel spray boom 22 is depending on quantity is the quantity according to the first groove 14, this reality
Execute example and be preferably 6.And the quantity of the fourth hole 221 on main fuel spray boom 22 equally basis carries out the setting being suitable for,
The present embodiment is preferably two rows, is set up in parallel in the axial direction, and two ranked fourth through hole 221 and are respectively positioned on main fuel spray boom 22
On the one side of the first through hole 141.
Center cold air baffle plate 24 is co-axially located in the body of cyclone 1, and with body 11 and the second boss portion
21 constitute the 3rd annular cavity 27.Fuel spray boom 23 on duty is one, sequentially passes through second along the second boss portion 21 central axis
Boss portion 21 and center cold air baffle plate 24, extend in the body of cyclone 1.
One end of taper sheath 25 is from the side of second boss portion 21 dorsad of center cold air baffle plate 24, and coaxial sleeve is located on duty
Fuel spray boom 23 is outside, and is tightly connected with the second boss portion 21, between other end end and fuel spray boom 23 outer ring surface on duty
Have on annulus 251, and center cold air baffle plate 24 and offer for by the 3rd annular cavity 27 with taper sheath 25 inner chamber even
Logical fifth hole 241.Wherein, the quantity of fifth hole 241 can be arranged as required to as multiple, and with center cold air baffle plate
The center of circle of 24 is the center of circle, is distributed in the form of a ring.
Further, the end, one end of second boss portion 21 dorsad of taper sheath 25 uniformly offers multiple clematis stem hole 252；
It addition, third through-hole 151 connects with the 3rd annular cavity 27.Wherein, the quantity in clematis stem hole 252 can be fitted as required
The selection closed, is preferably 2 rows, often row 18 in the present embodiment.
Burner inner liner 5 coaxial sleeve is located at the end, one end of the first boss portion 12 dorsad on cyclone 1 body.Further, exist
On the end, one end of the first boss portion 12 with burner inner liner 5 link position at, be additionally provided with multiple 7th through hole 16, the multiple 7th leads to
Hole 16 can be multiple rows of, and often the 7th through hole 16 in row is uniformly distributed circumferentially；The present embodiment is preferably 1 row, estimates 32.
In the dry low emissions burner of the present invention, air can flow into, with main combustion by the first groove 14 on cyclone 1
The fuel that on material spray boom 22, fourth hole 221 flows out blends (referring specifically to shown in Fig. 7)；Fuel-air after blending mixes
The compound tangential first through hole 141 on cyclone 1 flows into shape between body 11 inwall of taper sheath 25 outer wall and cyclone 1
The premixer become, continues mix homogeneously in premixer and rotates outflow, being formed back in premixer's outlet (lower end port in Fig. 6)
Stream district stable burning, can make main fuel be sufficiently mixed with air, reach the good uniformity.
Further, the spray-hole bottom fuel spray boom 23 on duty directly injects fuel into the backflow into premixer's outlet
District, with the mode combustion of diffusion combustion, has the effect of stable flame.The circulation area streamwise of this premixer gradually becomes
Greatly, adapt to the air capacity gradually increased, to eliminate the irregular flowing in premixer, avoid the fuel gas return-flow in recirculating zone simultaneously
To premixer, to prevent from burning in premixer.
It addition, air radial direction third through-hole 151 on cyclone 1, the fifth hole 241 on center cold air baffle plate 24 enter
Entering the inner chamber of taper sheath 25, cooled gas air inlet clematis stem hole 252 and annulus 251 are flowed out, and can reduce wall at this
Neighbouring fuel concentration, prevents from being tempered along wall.Further, the air also cooling gas air inlet the 7th on cyclone 1
Through hole 16, tangentially into premixer, flows along wall, reduces fuel concentration herein, prevents from being tempered along wall.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art in the technical scope that the invention discloses, the change that can readily occur in or replacement, all answer
Contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with described scope of the claims
Accurate.
Claims (7)
1. a dry low emissions burner, it is characterised in that including:
Casing (4), cylindrically；
Cyclone (1), including body (11) cylindrically and to be co-axially located at described body (11) one end be annulus
First boss portion (12) of shape, it is internal that described body (11) is co-axially located at described casing (4), and by described first boss
Portion (12) and described casing (4) one end end seal are fixing to be connected, and at the inwall of described casing (4) and described body (11)
Outer wall between form first annular interior cavity (13) of one end open, described body (11) outer wall is offered in the axial direction
There are the first groove (14) arranged side by side and the second groove (15)；Multiple are radially offered in described first groove (14)
Every the first through hole (141) arranged, offer second through hole (142) the most in the axial direction；Described second groove (15)
Radially offer the third through-hole (151) of；
Fuel nozzle (2), have in circular the second boss portion (21), main fuel spray boom (22), fuel spray boom on duty (23),
Center cold air baffle plate (24) and taper sheath (25)；Described second boss portion (21) and described first boss portion (12) co-axial seal
Connect, and at internal the second annular cavity (26) that is formed with of described second boss portion (21), described second annular cavity (26) tool
There is fuel inlet end (261)；Described main fuel spray boom (22) is fixedly installed on described second boss portion (21), and one end is with described
Second annular cavity (26) connects, and the other end runs through described second through hole (142) in the axial direction, extend into described first groove
(14), in, described main fuel spray boom (22) offers the fourth hole (221) corresponding with described first through hole (141) position；Institute
State center cold air baffle plate (24) to be co-axially located in the body of described cyclone (1), and with described body (11) and institute
State the second boss portion (21) and constitute the 3rd annular cavity (27)；Described fuel spray boom (23) on duty is along described second boss portion (21)
Central axis sequentially passes through described second boss portion (21) and described center cold air baffle plate (24), extend into described cyclone (1)
Body in；One end of described taper sheath (25) is from the most described second boss portion (21) of described center cold air baffle plate (24)
Side, it is outside that coaxial sleeve is located at described fuel spray boom (23) on duty, and is tightly connected with described second boss portion (21), another
Between end end and described fuel spray boom (23) outer ring surface on duty, there is annulus (251), and described center cold air baffle plate
(24) offer on for the fifth hole by described 3rd annular cavity (27) Yu described taper sheath (25) inner space
(241)；Described third through-hole (151) connects with described 3rd annular cavity (27)；
Burner inner liner (5), coaxial sleeve is located at one end end of the most described first boss portion (12) on described cyclone (1) body
Portion.
Dry low emissions burner the most according to claim 1, it is characterised in that described first boss portion (12) is with described
Second boss portion (21) is bolted.
Dry low emissions burner the most according to claim 1 and 2, it is characterised in that described second boss portion (21) with
The junction of described first boss portion (12) is provided with sealing ring (3).
Dry low emissions burner the most according to claim 1, it is characterised in that on described main fuel spray boom (22)
Four through holes (221) are two rows, are set up in parallel in the axial direction, and described in two rows, fourth hole (221) is respectively positioned on described main fuel
On the one side towards described first through hole (141) of spray boom (22).
Dry low emissions burner the most according to claim 1, it is characterised in that described first groove (14) and described the
Two grooves (15) quantity is identical and spaced apart.
Dry low emissions burner the most according to claim 1, it is characterised in that the quantity of described fifth hole (241)
For multiple, and with the center of circle of described center cold air baffle plate (24) as the center of circle, it is distributed in the form of a ring.
Dry low emissions burner the most according to claim 1, it is characterised in that described taper sheath (25) described dorsad
The end, one end of the second boss portion (21) uniformly offers multiple clematis stem hole (252).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610662575.9A CN106287816B (en) | 2016-08-12 | 2016-08-12 | A kind of dry low emissions burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610662575.9A CN106287816B (en) | 2016-08-12 | 2016-08-12 | A kind of dry low emissions burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106287816A true CN106287816A (en) | 2017-01-04 |
| CN106287816B CN106287816B (en) | 2019-01-18 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610662575.9A Active CN106287816B (en) | 2016-08-12 | 2016-08-12 | A kind of dry low emissions burner |
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| Country | Link |
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| CN (1) | CN106287816B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611891A (en) * | 2018-12-16 | 2019-04-12 | 中国航发沈阳发动机研究所 | A kind of dry low emission combustor |
| CN109654537A (en) * | 2018-12-07 | 2019-04-19 | 中国航发沈阳发动机研究所 | A kind of central fuel nozzle |
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| US20030014975A1 (en) * | 2001-06-29 | 2003-01-23 | Mitsubishi Heavy Industries, Ltd. | Gas turbine combustor |
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| CN101769531A (en) * | 2008-12-30 | 2010-07-07 | 通用电气公司 | DLN dual fuel primary nozzle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654537A (en) * | 2018-12-07 | 2019-04-19 | 中国航发沈阳发动机研究所 | A kind of central fuel nozzle |
| CN109611891A (en) * | 2018-12-16 | 2019-04-12 | 中国航发沈阳发动机研究所 | A kind of dry low emission combustor |
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| Publication number | Publication date |
|---|---|
| CN106287816B (en) | 2019-01-18 |
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