JP3197085B2 - Gas turbine combustor - Google Patents
Gas turbine combustorInfo
- Publication number
- JP3197085B2 JP3197085B2 JP32487692A JP32487692A JP3197085B2 JP 3197085 B2 JP3197085 B2 JP 3197085B2 JP 32487692 A JP32487692 A JP 32487692A JP 32487692 A JP32487692 A JP 32487692A JP 3197085 B2 JP3197085 B2 JP 3197085B2
- Authority
- JP
- Japan
- Prior art keywords
- gas turbine
- combustor
- turbine combustor
- combustion
- inner cylinder
- 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.)
- Expired - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、燃料を燃焼器内筒の内
部で稀薄燃焼させるガスタービン燃焼器に関し、より詳
細には、燃焼振動を抑制する構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas turbine combustor for leanly burning fuel inside a combustor inner cylinder, and more particularly to a structure for suppressing combustion oscillation.
【０００２】[0002]
【従来の技術】ガスタービンの公害対策としての重点課
題に、ガスタービン燃焼器で発生するＮＯＸの低減対策
がある。現在実施されているこの対策の１つとして、稀
薄燃焼を行わせる方法が採用されている。The priority issues as pollution control BACKGROUND OF THE INVENTION Gas turbines, there is a reduction measures of the NO X generated in the gas turbine combustor. As one of the measures currently implemented, a method of performing lean combustion is adopted.
【０００３】図３は、この低ＮＯＸガスタービン燃焼器
の一例として、従来のキャン型又はキャニュラ型燃焼器
内筒を示す断面図である。図３において、燃焼器内筒１
の頭部の燃焼域２に、空気導入筒３とルーバ４とから入
る一次燃焼空気５を集中させ、これにより燃料ノズル６
から噴射される燃料７を、スワーラ８を経て流入する空
気９と相侯って、稀薄燃焼させるようにしたものであ
る。そして、このような稀薄燃焼によって火炎（燃焼）
温度が下がり、発生ＮＯＸは減少する。[0003] Figure 3 shows, as an example of the low NO X gas turbine combustor is a sectional view showing a conventional scanning type or Kyanyura combustor inner cylinder. In FIG. 3, the combustor inner cylinder 1
The primary combustion air 5 entering from the air introducing cylinder 3 and the louver 4 is concentrated in the combustion area 2 at the head of
The fuel 7 injected from the air is mixed with the air 9 flowing through the swirler 8 to perform lean combustion. And flame (combustion) by such lean combustion
The temperature decreases, and the generated NO X decreases.
【０００４】[0004]
【発明が解決しようとする課題】ところで、このような
従来の低ＮＯＸガスタービン燃焼器にあっては、燃焼振
動が発生する問題があった。すなわち、稀薄燃焼を行な
って火炎温度を下げると、燃焼器気体流路系の音響的固
有振動数が、燃焼によって熱的に駆動される、いわゆる
燃焼振動を発生する場合がある。そして、この燃焼振動
は発熱速度の変動によって、系の音響的固有振動が駆動
される低サイクル自励振動で、流体の圧力が変動し、甚
だしいときには疲労によって、ガスタービン燃焼器や下
流のガスタービン翼を損傷する場合があった。[SUMMARY OF THE INVENTION Incidentally, in such a conventional low NO X gas turbine combustor, there is a problem that the combustion vibration occurs. That is, when the flame temperature is lowered by performing the lean combustion, the acoustic natural frequency of the combustor gas flow path system may generate so-called combustion vibration that is thermally driven by the combustion. This combustion vibration is a low cycle self-excited vibration in which the acoustic natural vibration of the system is driven by the fluctuation of the heat generation rate, and the pressure of the fluid fluctuates. Wings could be damaged.
【０００５】本発明は、このような従来技術の課題を解
決するためになされたもので、燃焼振動を抑制できるよ
うにした低ＮＯＸガスタービン燃焼器を提供することを
目的とする。[0005] The present invention has been made to solve the problems of the conventional art, and an object thereof is to provide a low NO X gas turbine combustor to allow suppressing combustion oscillation.
【０００６】[0006]
【課題を解決するための手段】上記の課題を解決するた
めに、本発明は、燃料を燃焼器内筒の内部で稀薄燃焼さ
せるガスタービン燃焼器において、前記燃焼器内筒を多
孔壁筒により空間を設けて囲繞したものである。In order to solve the above-mentioned problems, the present invention provides a gas turbine combustor in which fuel is burned lean in a combustor inner cylinder, wherein the combustor inner cylinder is formed by a perforated wall cylinder. A space is provided and surrounded.
【０００７】[0007]
【作用】上記の手段によれば、ガスタービン燃焼器の内
筒を空間を設けて囲繞する多孔壁筒が共鳴箱として作用
し、これにより圧力変動が抑制されて、燃焼振動のエネ
ルギと振幅が著しく減衰する。According to the above-described means, the perforated wall cylinder surrounding the inner cylinder of the gas turbine combustor with a space provided therein acts as a resonance box, whereby pressure fluctuation is suppressed, and the energy and amplitude of combustion vibration are reduced. Significantly decays.
【０００８】[0008]
【実施例】以下、図１，図２を参照して本発明の実施例
について詳細に説明する。図１は本発明の一実施例に係
るガスタービン燃焼器の内筒を示す断面図、図２は図１
のＡ−Ａ線矢視図であり、図３に示したものと同一の部
分には同一の符号を付して、重複する説明は省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is a sectional view showing an inner cylinder of a gas turbine combustor according to one embodiment of the present invention, and FIG.
FIG. 4 is a view taken along the line AA of FIG. 3, and the same portions as those shown in FIG. 3 are denoted by the same reference numerals, and redundant description will be omitted.
【０００９】図１，図２に示すように、本発明によれ
ば、低ＮＯＸガスタービン燃焼器の内筒１は多数の孔１
１を有する多孔壁筒１２により空間１３を設けて囲繞さ
れている。したがって、この多孔壁筒１２は共鳴箱とし
て作用し、これにより圧力変動が抑制されて、燃焼振動
のエネルギと振幅が著しく減衰する。なお、多孔壁筒１
２は例えば不銹鋼板で作られ、燃焼器内筒１の両端縁に
溶接によって固定される。As shown in FIGS. 1 and 2, according to the present invention, the inner cylinder 1 of the low NO X gas turbine combustor has a large number of holes 1.
A space 13 is provided and surrounded by a perforated wall cylinder 12 having a 1. Therefore, the perforated wall cylinder 12 acts as a resonance box, whereby pressure fluctuation is suppressed, and the energy and amplitude of the combustion vibration are significantly attenuated. In addition, perforated wall cylinder 1
2 is made of a stainless steel plate, for example, and is fixed to both end edges of the combustor inner cylinder 1 by welding.
【００１０】[0010]
【発明の効果】以上述べたように、本発明によれば、燃
料を燃焼器内筒の内部で稀薄燃焼させるガスタービン燃
焼器において、前記燃焼器内筒を多孔壁筒により空間を
設けて囲繞したことにより、低ＮＯＸガスタービン燃焼
器の燃焼振動が抑制され、燃焼振動による燃焼器内筒や
ガスタービン翼の損傷が防止されて、ガスタービンの信
頼性が向上する。As described above, according to the present invention, in a gas turbine combustor in which fuel is burned lean inside a combustor inner tube, the combustor inner tube is surrounded by a space provided by a perforated wall tube. by the combustion oscillation of the low NO X gas turbine combustor is suppressed, damage to the combustion liner and the gas turbine blade due to the combustion vibration is prevented, thereby improving the reliability of the gas turbine.
【図１】本発明の一実施例に係るガスタービン燃焼器の
内筒を示す断面図である。FIG. 1 is a sectional view showing an inner cylinder of a gas turbine combustor according to one embodiment of the present invention.
【図２】図１のＡ−Ａ線矢視図である。FIG. 2 is a view taken along the line AA of FIG. 1;
【図３】従来のガスタービン燃焼器の内筒を示す断面図
である。FIG. 3 is a sectional view showing an inner cylinder of a conventional gas turbine combustor.
１ 燃焼器内筒 ６ 燃料ノズル ７ 燃料 １１ 孔 １２ 多孔壁筒 １３ 空間 DESCRIPTION OF SYMBOLS 1 Combustor inner cylinder 6 Fuel nozzle 7 Fuel 11 Hole 12 Perforated wall cylinder 13 Space
Claims (1)
ガスタービン燃焼器において、前記燃焼器内筒を多孔壁
筒により空間を設けて囲繞したことを特徴とするガスタ
ービン燃焼器。1. A gas turbine combustor for lean-burning fuel inside a combustor inner cylinder, wherein the combustor inner cylinder is surrounded by a space provided by a porous wall cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32487692A JP3197085B2 (en) | 1992-11-10 | 1992-11-10 | Gas turbine combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32487692A JP3197085B2 (en) | 1992-11-10 | 1992-11-10 | Gas turbine combustor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06147485A JPH06147485A (en) | 1994-05-27 |
| JP3197085B2 true JP3197085B2 (en) | 2001-08-13 |
Family
ID=18170625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32487692A Expired - Lifetime JP3197085B2 (en) | 1992-11-10 | 1992-11-10 | Gas turbine combustor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3197085B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6973790B2 (en) | 2000-12-06 | 2005-12-13 | Mitsubishi Heavy Industries, Ltd. | Gas turbine combustor, gas turbine, and jet engine |
| ES2309029T3 (en) * | 2001-01-09 | 2008-12-16 | Mitsubishi Heavy Industries, Ltd. | GAS TURBINE COMBUSTION CHAMBER. |
-
1992
- 1992-11-10 JP JP32487692A patent/JP3197085B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06147485A (en) | 1994-05-27 |
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