CN202328367U - Dry type low-emission combustion chamber of natural gas fuel gas turbine - Google Patents
Dry type low-emission combustion chamber of natural gas fuel gas turbine Download PDFInfo
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- CN202328367U CN202328367U CN 201120512510 CN201120512510U CN202328367U CN 202328367 U CN202328367 U CN 202328367U CN 201120512510 CN201120512510 CN 201120512510 CN 201120512510 U CN201120512510 U CN 201120512510U CN 202328367 U CN202328367 U CN 202328367U
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- chamber
- radial swirler
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Abstract
The utility model discloses a dry type low-emission combustion chamber of a natural gas fuel gas turbine, and relates to a gas turbine combustion chamber to solve the problem that the fuel and air cannot be sufficiently mixed since a gas nozzle in the conventional gas turbine combustion chamber is of a single-stage radial pre-mixing structure. 16 flame tubes are uniformly arranged in the combustion chamber along the same circumference; the gas outlet end of each flame tube is arranged at the gas outlet end of the combustion chamber; one end of a diffuser is mounted at a gas outlet; the gas inlet end of each first gas supply branch pipe is connected with a first gas supply manifold; the gas outlet end of each first gas supply branch pipe is connected with a first gas circuit joint on the gas nozzle; the gas inlet end of each second gas supply branch pipe is connected with a second gas supply manifold; the gas outlet end of each second gas supply branch pipe is connected with a second gas circuit joint on the gas nozzle; both the first gas supply manifold and the second gas supply manifold are mounted on a pipeline bracket; and two igniters are mounted on a housing of the combustion chamber. The dry type low-emission combustion chamber disclosed by the utility model is applied to the gas turbine of a combustion-drive compressor unit in a natural gas pipeline.
Description
Technical field
The utility model relates to a kind of gas-turbine combustion chamber.
Background technology
In the evolution of gas turbine technology, pollutant emission problem in combustion chamber is not causing people's attention for a long time always.Since the last century the eighties, the enhancing day by day of Along with people's environmental consciousness, and the formulation of countries in the world discharge standard and improving constantly have proposed the regulation of limiting the quantity of of increasingly stringent to the pollutant emission of gas-turbine combustion chamber.NOx can not surpass 25ppmvd in EPA's requirement discharge of gas turbine thing, and Europe requires to control to NOx below the 40ppmvd.Stipulate among China GB13223-603 that gas turbine NOx maximum emission amount when fuel oil is no more than 75ppmvd, is no more than 39ppmvd during combustion gas.
Mainly contain nitrogen oxide (NOx), carbon monoxide (C0) and unburned hydrocarbons (UHC), sulfur oxide (SOx) and flue gas (Smoke) etc. in the discharge of gas turbine thing; These emissions can cause serious harm to the mankind and ecological environment thereof, and its discharge capacity and fuel type, chamber structure and operating condition etc. are closely related.Gas nozzle in the existing gas-turbine combustion chamber is a radially pre-mixed configuration of single-stage, and fuel can not fully mix with air, causes gas-turbine combustion chamber inlet pressure and out temperature thereof to improve constantly, and the content of nitrogen oxide is more and more in the corresponding exhaust.
The utility model content
The purpose of the utility model be for the gas nozzle that solves in the existing gas-turbine combustion chamber be radially pre-mixed configuration of single-stage; Fuel can not fully mix with air; The problem that causes gas-turbine combustion chamber inlet pressure and out temperature thereof to improve constantly provides a kind of gas fuel gas turbine dry low emissions combustion chamber.
The utility model comprises combustor outer casing and combustion chamber inner casing, pipeline support, first air supply header, second air supply header, two igniters, 16 burner inner liners, 16 gas nozzles, 16 flanges, 16 diffusers, 16 first gas manifolds and 16 second gas manifolds, and the combustion chamber inner casing is arranged in the combustor outer casing; Cavity between combustor outer casing and the combustion chamber inner casing is a fuel chamber; 16 burner inner liners are arranged in the fuel chamber along same circumference uniform distribution, and the inlet end of each burner inner liner is connected with a gas nozzle, and each gas nozzle is installed in the inlet end of fuel chamber through a flange; The outlet side of each burner inner liner is arranged on the place, outlet side of fuel chamber; The end of combustion chamber inner casing is provided with gas outlet, and an end of diffuser is installed in gas outlet, and the inlet end of each first gas manifold is connected with first air supply header; First gas path joint on the gas nozzle corresponding with it of the outlet side of each first gas manifold connects; The inlet end of each second gas manifold is connected with second air supply header, and second gas path joint on the gas nozzle corresponding with it of the outlet side of each second gas manifold connects, and first air supply header and second air supply header are installed on the pipeline support; Two igniters are installed on the combustor outer casing; Said gas nozzle is made up of nozzle body, cup shell, first gas path joint, second gas path joint, cramp frame, radial swirler, detrusor, lasso, first compressing member and second compressing member, is provided with first gas circuit and second gas circuit in the nozzle body, and in the nozzle body and the top that is positioned at second gas circuit is provided with the air inlet through hole; The inlet end of radial swirler is connected with the outlet side of nozzle body; The inlet end of lasso is connected with the outlet side of radial swirler, and first compressing member is connected with the outlet side of lasso, and cup shell is arranged in the inner chamber of first compressing member; And the outer wall of cup shell is connected with radial swirler; Second compressing member is arranged in the inner chamber of cup shell and radial swirler, and the inlet end of detrusor is arranged on out in the vent hole, and the outlet side of detrusor is arranged in the inner chamber of second compressing member; Cramp frame is arranged on the outer wall of nozzle body and radial swirler junction; And form first annular chamber between the cramp frame radial swirler outer wall corresponding with it, radial swirler is provided with second annular chamber that communicates with second gas circuit, and radial swirler is provided with passage and inlet chamber; And passage communicates with second annular chamber; Inlet chamber communicates with passage, and the inlet end blade of radial swirler is provided with several first mistake gas apertures, and the outlet side blade of radial swirler is provided with several second mistake gas apertures; First gas path joint is installed in the import department of first gas circuit, and second gas path joint is installed in the import department of second gas circuit.
The utility model has the advantages that: one, the utility model adopts the two-stage gas circuit to carry out pre-mixed configuration, first order gas circuit: cross gas aperture 6-6-6 through first air supply header 9, first gas manifold 11, the first gas circuit 6-1-1 and first and make natural gas and air after nozzle head chamber 6-11 accomplishes abundant premix, get into burner inner liner 4 to carry out smooth combustion; Second level gas circuit: cross gas aperture 6-6-8 through second air supply header 10, second gas manifold 12, the second gas circuit 6-1-2 and second; Make natural gas and air accomplish poor combustion premix, realize smooth combustion jointly with the natural gas that first order gas circuit provides at nozzle head chamber 6-11.Fuel fully mixes with air, and the gas-turbine combustion chamber outlet temperature is evenly distributed, and low combustion gas/air ratio makes the combustor exit temperature be not more than the rated temperature value.Two, the utility model has guaranteed that the heavy duty gas turbine pollutant discharge amount reaches national GB13223-2003 discharge standard, and runnability is reliable and stable.Three, also to can be applicable to electric power, petrochemical industry etc. be on the industry gas turbine of fuel with the natural gas to the utility model.
Description of drawings
Fig. 1 is the main cutaway view of the utility model; What represent among the figure is single combustion chamber; Fig. 2 is the A-A cutaway view (cross section of integral combustion chamber) of Fig. 1; Fig. 3 is structure master's cutaway view of gas nozzle 6, and Fig. 4 is structure master's cutaway view (14-1 is that natural gas air inlet, 14-2 are that air intlet, 14-3 are that gas outlet, 14-4 are plasma igniter among the figure) of igniter 14.
The specific embodiment
The specific embodiment one: combine Fig. 1～Fig. 4 that this embodiment is described, this embodiment combustor outer casing 1 and combustion chamber inner casing 2, pipeline support 3, first air supply header 9, second air supply header 10, two 8,16 first gas manifolds 11 of 7,16 diffusers of 6,16 flanges of 4,16 gas nozzles of 14,16 burner inner liners of igniter and 16 second gas manifolds 12; Combustion chamber inner casing 2 is arranged in the combustor outer casing 1, and the cavity between combustor outer casing 1 and the combustion chamber inner casing 2 is that 5, ten six burner inner liners of fuel chamber 4 are arranged in the fuel chamber 5 along same circumference uniform distribution; The inlet end of each burner inner liner 4 is connected with a gas nozzle 6, and each gas nozzle 6 is installed in the inlet end of fuel chamber 5 through a flange 7, and the outlet side of each burner inner liner 4 is arranged on the place, outlet side of fuel chamber 5; And the outlet side of each burner inner liner 4 is connected with nozzle ring 15 in being installed in support case 17, and the end of combustion chamber inner casing 2 is provided with gas outlet 13, and an end of diffuser 8 is installed in gas outlet 13 places; The other end of diffuser 8 is connected with compressor housings 16, and the inlet end of each first gas manifold 11 is connected with first air supply header 9, and the first gas path joint 6-3 on the gas nozzle 6 corresponding with it of the outlet side of each first gas manifold 11 connects; The inlet end of each second gas manifold 12 is connected with second air supply header 10, and the second gas path joint 6-4 on the gas nozzle 6 corresponding with it of the outlet side of each second gas manifold 12 connects, and first air supply header 9 and second air supply header 10 are installed on the pipeline support 3; Pipeline support 3 is packed on the compressor housings 21, and two igniters 14 are installed on the combustor outer casing 1, and said gas nozzle 6 is made up of nozzle body 6-1, cup shell 6-2, the first gas path joint 6-3, the second gas path joint 6-4, cramp frame 6-5, radial swirler 6-6, detrusor 6-7, lasso 6-8, the first compressing member 6-9 and the second compressing member 6-10; Be provided with the first gas circuit 6-1-1 and the second gas circuit 6-1-2 in the nozzle body 6-1; In the nozzle body 6-1 and the top that is positioned at the second gas circuit 6-1-2 is provided with air inlet through hole 6-1-3, and the inlet end of radial swirler 6-6 is connected with the outlet side of nozzle body 6-1, and the inlet end of lasso 6-8 is connected with the outlet side of radial swirler 6-6; The first compressing member 6-9 is connected with the outlet side of lasso 6-8; Cup shell 6-2 is arranged in the inner chamber of the first compressing member 6-9, and the outer wall of cup shell 6-2 is connected with radial swirler 6-6, and the second compressing member 6-10 is arranged in the inner chamber of cup shell 6-2 and radial swirler 6-6; And the inlet end of the second compressing member 6-10 is connected with the inwall of radial swirler 6-6; The outlet side of the second compressing member 6-10 is arranged in the inner chamber of cup shell 6-2, and the inlet end of detrusor 6-7 is arranged on out in the vent hole 6-1-3, and the outlet side of detrusor 6-7 is arranged in the inner chamber of the second compressing member 6-10; Cramp frame 6-5 is arranged on the outer wall of nozzle body 6-1 and radial swirler 6-6 junction; And form the first annular chamber 6-6-1 between the cramp frame 6-5 radial swirler 6-6 outer wall corresponding with it, radial swirler 6-6 is provided with the second annular chamber 6-6-2 that communicates with the second gas circuit 6-1-2, and radial swirler 6-6 is provided with passage 6-6-3 and inlet chamber 6-6-4; And passage 6-6-3 communicates with the second annular chamber 6-6-2; Inlet chamber 6-6-4 communicates with passage 6-6-3, and the inlet end blade 6-6-5 of radial swirler 6-6 is provided with several first mistake gas apertures 6-6-6, and the outlet side blade 6-6-7 of radial swirler 6-6 is provided with several second mistake gas apertures 6-6-8; The first gas path joint 6-3 is installed in the import department of the first gas circuit 6-1-1, and the second gas path joint 6-4 is installed in the import department of the second gas circuit 6-1-2.Radial swirler 6-6, burner inner liner 4 and igniter 14 are prior art.Gas nozzle 6 is used for fuel-air mixture is delivered to the combustion zone of burner inner liner.
The specific embodiment two: combine Fig. 1 that this embodiment is described, the center line N-N of each burner inner liner 4 of this embodiment and the established angle α between the engine centerline O-O be 8 ° 38 '.Other composition is identical with the specific embodiment one with annexation.
The specific embodiment three: combine Fig. 1 that this embodiment is described, the first gas circuit 6-1-1 and the second gas circuit 6-1-2 of this embodiment laterally arrange.And the said first gas circuit 6-1-1 is positioned at combustion chamber inner casing 2 one sides.Other composition is identical with the specific embodiment one or two with annexation.
The operation principle of the utility model: (1), first order gas circuit: under engine start and low operating mode; Natural gas is worked independently by first air supply header 9 and first gas manifold 11 and in burner inner liner 4, natural gas is provided by rule; Its natural gas through the principle of gas nozzle 6 is: the first gas circuit 6-1-1 in the natural gas via gas nozzle 6 gets in the first annular chamber 6-6-1 and evenly distributes; By several the first gas aperture 6-6-6 outflows excessively on the inlet end blade 6-6-5 on the radial swirler 6-6; And part air blending and get into nozzle head chamber 6-11 in the runner between inlet end blade 6-6-5, natural gas and air get into burner inner liner 4 and carry out smooth combustion behind the abundant premix of nozzle head chamber 6-11;
(2), second level gas circuit: when the above operating mode of engine slow train rises; Natural gas provides natural gas by second air supply header 10 and second gas manifold 12 in burner inner liner 4; Its natural gas through the principle of gas nozzle 6 is: the second gas circuit 6-1-2 in the natural gas via gas nozzle 6 gets in the second annular chamber 6-6-2 and evenly distributes; Get into air cavity 6-6-4 through passage 6-6-3 again; By several the second gas aperture 6-6-8 outflows excessively on the outlet side blade 6-6-7 on the radial swirler 6-6; And part air blending and get into nozzle head chamber 6-11 and accomplish poor combustion premix in the runner realizes smooth combustion jointly with the natural gas that first order gas circuit provides between the blade 6-6-7 of outlet side.Under engine 0.8～1.0 operating mode, gas nozzle 6 is accomplished the air feed on each road by pollutant emission restriction criterion.
Claims (3)
1. gas fuel gas turbine dry low emissions combustion chamber, said combustion chamber comprises combustor outer casing (1) and combustion chamber inner casing (2), pipeline support (3), first air supply header (9), second air supply header (10), 16 burner inner liners (4), 16 flanges (7), 16 first gas manifolds (11) and 16 second gas manifolds (12); Combustion chamber inner casing (2) is arranged in the combustor outer casing (1), and the cavity between combustor outer casing (1) and the combustion chamber inner casing (2) is fuel chamber (5), and 16 burner inner liners (4) are arranged in the fuel chamber (5) along same circumference uniform distribution; It is characterized in that: said combustion chamber also comprises two igniters (14), 16 gas nozzles (6) and 16 diffusers (8), and the inlet end of each burner inner liner (4) is connected with a gas nozzle (6), and each gas nozzle (6) is installed in the inlet end of fuel chamber (5) through a flange (7); The outlet side of each burner inner liner (4) is arranged on the place, outlet side of fuel chamber (5); The end of combustion chamber inner casing (2) is provided with gas outlet (13), and an end of diffuser (8) is installed in gas outlet (13) and locates, and the inlet end of each first gas manifold (11) is connected with first air supply header (9); First gas path joint (6-3) on the gas nozzle (6) corresponding with it of the outlet side of each first gas manifold (11) connects; The inlet end of each second gas manifold (12) is connected with second air supply header (10), and second gas path joint (6-4) on the gas nozzle (6) corresponding with it of the outlet side of each second gas manifold (12) connects, and first air supply header (9) and second air supply header (10) are installed on the pipeline support (3); Two igniters (14) are installed on the combustor outer casing (1); Said gas nozzle (6) is made up of nozzle body (6-1), cup shell (6-2), first gas path joint (6-3), second gas path joint (6-4), cramp frame (6-5), radial swirler (6-6), detrusor (6-7), lasso (6-8), first compressing member (6-9) and second compressing member (6-10), is provided with first gas circuit (6-1-1) and second gas circuit (6-1-2) in the nozzle body (6-1), and in the nozzle body (6-1) and the top that is positioned at second gas circuit (6-1-2) is provided with air inlet through hole (6-1-3); The inlet end of radial swirler (6-6) is connected with the outlet side of nozzle body (6-1); The inlet end of lasso (6-8) is connected with the outlet side of radial swirler (6-6), and first compressing member (6-9) is connected with the outlet side of lasso (6-8), and cup shell (6-2) is arranged in the inner chamber of first compressing member (6-9); And the outer wall of cup shell (6-2) is connected with radial swirler (6-6); Second compressing member (6-10) is arranged in the inner chamber of cup shell (6-2) and radial swirler (6-6), and the inlet end of detrusor (6-7) is arranged on out in the vent hole (6-1-3), and the outlet side of detrusor (6-7) is arranged in the inner chamber of second compressing member (6-10); Cramp frame (6-5) is arranged on the outer wall of nozzle body (6-1) and radial swirler (6-6) junction; And form first annular chamber (6-6-1) between cramp frame (6-5) radial swirler (6-6) outer wall corresponding with it, radial swirler (6-6) is provided with second annular chamber (6-6-2) that communicates with second gas circuit (6-1-2), and radial swirler (6-6) is provided with passage (6-6-3) and inlet chamber (6-6-4); And passage (6-6-3) communicates with second annular chamber (6-6-2); Inlet chamber (6-6-4) communicates with passage (6-6-3), and the inlet end blade (6-6-5) of radial swirler (6-6) is provided with several first mistake gas apertures (6-6-6), and the outlet side blade (6-6-7) of radial swirler (6-6) is provided with several second mistake gas apertures (6-6-8); First gas path joint (6-3) is installed in the import department of first gas circuit (6-1-1), and second gas path joint (6-4) is installed in the import department of second gas circuit (6-1-2).
2. according to the said gas fuel gas turbine of claim 1 dry low emissions combustion chamber, it is characterized in that: center line (N-N) of each burner inner liner (4) and the established angle (α) between the engine centerline (O-O) be 8 ° 38 '.
3. according to claim 1 or 2 said gas fuel gas turbine dry low emissions combustion chambers, it is characterized in that: said first gas circuit (6-1-1) laterally arranges with second gas circuit (6-1-2), and said first gas circuit (6-1-1) is positioned at combustion chamber inner casing (2) one sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120512510 CN202328367U (en) | 2011-12-09 | 2011-12-09 | Dry type low-emission combustion chamber of natural gas fuel gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120512510 CN202328367U (en) | 2011-12-09 | 2011-12-09 | Dry type low-emission combustion chamber of natural gas fuel gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202328367U true CN202328367U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120512510 Withdrawn - After Issue CN202328367U (en) | 2011-12-09 | 2011-12-09 | Dry type low-emission combustion chamber of natural gas fuel gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202328367U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110107916A (en) * | 2019-05-15 | 2019-08-09 | 哈尔滨电气股份有限公司 | A kind of gas turbine dry low NO_x combustor biradial swirl nozzle |
-
2011
- 2011-12-09 CN CN 201120512510 patent/CN202328367U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102393028B (en) * | 2011-12-09 | 2013-08-28 | 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 |
| CN110107916A (en) * | 2019-05-15 | 2019-08-09 | 哈尔滨电气股份有限公司 | A kind of gas turbine dry low NO_x combustor biradial swirl nozzle |
| CN110107916B (en) * | 2019-05-15 | 2020-11-13 | 哈尔滨电气股份有限公司 | Dry-type low-pollution combustion chamber double-radial swirl nozzle for gas turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20130828 |
|
| RGAV | Abandon patent right to avoid regrant |