JP5717821B2

JP5717821B2 - Acoustic liner for gas turbine combustor, gas turbine combustor, and gas turbine

Info

Publication number: JP5717821B2
Application number: JP2013223404A
Authority: JP
Inventors: 湯淺　厚志; 厚志湯淺; 谷村　聡; 聡谷村
Original assignee: Mitsubishi Heavy Industries Ltd
Current assignee: Mitsubishi Heavy Industries Ltd
Priority date: 2013-10-28
Filing date: 2013-10-28
Publication date: 2015-05-13
Anticipated expiration: 2026-11-10
Also published as: JP2014015941A

Description

本発明は、ハウジングの内部に燃焼振動抑制用の共鳴空間を有するガスタービン燃焼器用の音響ライナー、ガスタービン燃焼器、およびガスタービンに関するものである。 The present invention relates to an acoustic liner for a gas turbine combustor having a resonance space for suppressing combustion vibration in a housing, a gas turbine combustor, and a gas turbine.

ガスタービン燃焼器用の音響ライナーとしては、例えば、特許文献１に開示されたものが知られている。 As an acoustic liner for a gas turbine combustor, for example, one disclosed in Patent Document 1 is known.

特表２００４−５０９３１３号公報（ＦＩＧ．５Ａ）Japanese translation of PCT publication No. 2004-509313 (FIG. 5A)

しかしながら、上記特許文献１に開示されているガスタービン燃焼器用の音響ライナーは、燃焼筒の壁面に対向する面（第２の部材）に設けられた多数の開口（パージ孔）が、周方向に沿って均一に（満遍なく）設けられている。そのため、これら多数の開口を通って共鳴空間内に流入するパージ空気の比率が高くなり、その分、ガスタービンの燃焼器で燃焼される燃焼用空気の量が減少して、燃焼ガスの温度が高くなり、ＮＯ_Ｘ（窒素酸化物）の発生量（排出量）が増加してしまうといった問題点があった。 However, the acoustic liner for a gas turbine combustor disclosed in Patent Document 1 has a large number of openings (purge holes) provided in a surface (second member) facing the wall surface of the combustion cylinder in the circumferential direction. It is provided uniformly (evenly) along. Therefore, the ratio of the purge air flowing into the resonance space through these many openings becomes high, and the amount of combustion air burned in the combustor of the gas turbine is reduced correspondingly, and the temperature of the combustion gas is increased. There is a problem in that the amount of NO _x (nitrogen oxide) generated (discharged amount) increases due to the increase.

本発明は、上記の事情に鑑みてなされたもので、パージ用空気の消費量を適正な量とすることができ、ガスタービンの燃焼器で燃焼される燃焼用空気の量を増加させることができて、燃焼ガスの温度を低減させることができるとともに、ＮＯ_Ｘの発生量（排出量）を低減させることができるガスタービン燃焼器用の音響ライナーを提供することを目的とする。 The present invention has been made in view of the above circumstances, and can make the consumption amount of purge air an appropriate amount and increase the amount of combustion air burned in the combustor of the gas turbine. can be, it is possible to reduce the temperature of the combustion gases, and an object thereof is to provide an acoustic liner for a gas turbine combustor capable of reducing the generation amount of the NO _X (the emissions).

本発明は、上記課題を解決するため、以下の手段を採用した。
本発明の参考例に係るガスタービン燃焼器用の音響ライナーは、内部に燃焼領域が形成される燃焼筒の壁面に、周方向に沿って穿設された多数の孔と、これら多数の孔が穿設された領域における前記燃焼筒の外周側を取り囲むように配置され、前記燃焼筒の壁面との間に共鳴空間が形成されるハウジングとを備えたガスタービン燃焼器用の音響ライナーであって、前記ハウジングの一側面または他側面の一方のみに、周方向に沿うとともにその全周にわたって複数のパージ孔が均等に穿設されている。 The present invention employs the following means in order to solve the above problems.
An acoustic liner for a gas turbine combustor according to a reference example of the present invention has a large number of holes drilled along the circumferential direction in a wall surface of a combustion cylinder in which a combustion region is formed, and the numerous holes are formed in the acoustic liner. An acoustic liner for a gas turbine combustor including a housing that is disposed so as to surround an outer peripheral side of the combustion cylinder in a region provided and in which a resonance space is formed with a wall surface of the combustion cylinder, A plurality of purge holes are equally drilled along only the one side or the other side of the housing along the circumferential direction.

本発明の参考例に係るガスタービン燃焼器用の音響ライナーによれば、パージ孔が、ハウジングの一側面または他側面の一方のみに設けられることとなるので、従来のものよりもパージ孔の数（すなわち、パージ孔全体の開口面積）を低減させることができて、パージ孔から共鳴空間内に流入するパージ用空気の消費量を低減させることができる。
また、パージ孔から共鳴空間内に流入するパージ用空気は、燃焼筒の壁面に沿って、孔全体を覆うように（ブロックするように）流れることとなる（すなわち、共鳴空間内の燃焼筒の壁面近傍に、パージ用空気による空気の層が形成されることとなる）ので、燃焼筒内から共鳴空間内への高温燃焼ガスの流入が抑制されることとなる。 According to the acoustic liner for a gas turbine combustor according to the reference example of the present invention, since the purge hole is provided only on one side or the other side of the housing, the number of purge holes ( That is, the opening area of the entire purge hole can be reduced, and the consumption of purge air flowing into the resonance space from the purge hole can be reduced.
Further, the purge air flowing into the resonance space from the purge hole flows along the wall surface of the combustion cylinder so as to cover (block) the entire hole (that is, the combustion cylinder in the resonance space). Since an air layer is formed by purge air in the vicinity of the wall surface, the flow of high-temperature combustion gas from the combustion cylinder into the resonance space is suppressed.

本発明の参考例に係るガスタービン燃焼器用の音響ライナーは、内部に燃焼領域が形成される燃焼筒の、周方向の一部を除く壁面に、周方向に沿って穿設された多数の孔と、これら多数の孔が穿設された領域における前記燃焼筒の外周側を取り囲むように配置され、前記燃焼筒の壁面との間に共鳴空間が形成される２つのハウジングとを備えたガスタービン燃焼器用の音響ライナーであって、前記ハウジングの一側面または他側面の一方のみに、周方向に沿うとともにその全周にわたって複数のパージ孔が均等に穿設されている。 An acoustic liner for a gas turbine combustor according to a reference example of the present invention includes a plurality of holes drilled along a circumferential direction on a wall surface of a combustion cylinder in which a combustion region is formed except for a part in the circumferential direction. And two housings that are disposed so as to surround the outer peripheral side of the combustion cylinder in a region in which these many holes are formed, and in which a resonance space is formed between the combustion cylinder and the wall surface of the combustion cylinder In the acoustic liner for a combustor, a plurality of purge holes are evenly formed along the circumferential direction only on one side or the other side of the housing.

本発明の参考例に係るガスタービン燃焼器用の音響ライナーは、内部に燃焼領域が形成される燃焼筒の上流側に位置する壁面に、周方向に沿って穿設された多数の孔と、これら多数の孔が穿設された領域における前記燃焼筒の外周側を取り囲むように配置され、前記燃焼筒の壁面との間に共鳴空間が形成されるハウジングとを備え、内部に燃焼領域が形成される燃焼筒の下流側に位置する、周方向の一部を除く壁面に、周方向に沿って穿設された多数の孔と、これら多数の孔が穿設された領域における前記燃焼筒の外周側を取り囲むように配置され、前記燃焼筒の壁面との間に共鳴空間が形成される２つのハウジングとを備えたガスタービン燃焼器用の音響ライナーであって、前記ハウジングの一側面または他側面の一方のみに、周方向に沿うとともにその全周にわたって複数のパージ孔が均等に穿設されている。 An acoustic liner for a gas turbine combustor according to a reference example of the present invention includes a large number of holes drilled along a circumferential direction on a wall surface located upstream of a combustion cylinder in which a combustion region is formed. A housing that is disposed so as to surround the outer peripheral side of the combustion cylinder in a region where a large number of holes are perforated, and in which a resonance space is formed between the combustion cylinder and the wall surface of the combustion cylinder; A plurality of holes drilled along the circumferential direction on the wall surface excluding a part of the circumferential direction, which is located downstream of the combustion cylinder, and an outer periphery of the combustion cylinder in a region where the numerous holes are drilled An acoustic liner for a gas turbine combustor including two housings disposed so as to surround a side and having a resonance space formed between walls of the combustion cylinder, Only in one direction A plurality of purge holes are equally drilled over its entire circumference with.

本発明に係るガスタービン燃焼器用の音響ライナーは、内部に燃焼領域が形成される燃焼筒の壁面に、周方向に沿って穿設された多数の孔と、これら多数の孔が穿設された領域における前記燃焼筒の外周側を取り囲むように配置され、前記燃焼筒の壁面との間に共鳴空間が形成されるハウジングとを備えたガスタービン燃焼器用の音響ライナーであって、前記ハウジングの一側面および他側面の双方に、周方向に沿うとともにその全周にわたって複数のパージ孔が均等に穿設され、かつ、前記一側面に穿設された前記パージ孔と、前記他側面に穿設された前記パージ孔とが、周方向において重ならないように配置され、前記燃焼筒の壁面に穿設された孔の開口面積よりも前記パージ孔の開口面積が大きく、該パージ孔から前記共鳴空間内に流入する空気が前記燃焼筒の壁面に沿って流れることにより前記燃焼筒の壁面近傍に空気の層が形成されている。 The acoustic liner for a gas turbine combustor according to the present invention has a large number of holes drilled along the circumferential direction on the wall surface of a combustion cylinder in which a combustion region is formed, and these numerous holes are drilled. An acoustic liner for a gas turbine combustor, which is provided so as to surround an outer peripheral side of the combustion cylinder in a region and has a housing in which a resonance space is formed with a wall surface of the combustion cylinder. A plurality of purge holes are equally drilled along the circumferential direction on both the side surface and the other side surface, and the purge hole drilled on the one side surface and the other side surface are formed. The purge hole is arranged so as not to overlap in the circumferential direction, and the opening area of the purge hole is larger than the opening area of the hole drilled in the wall surface of the combustion cylinder, and the purge hole has an opening area within the resonance space. Flow Air air layers near the wall of the combustion cylinder by flowing along the wall surface of the combustion liner is formed of.

本発明に係るガスタービン燃焼器用の音響ライナーによれば、パージ孔が、ハウジングの一側面および他側面の双方のみに設けられることとなるので、従来のものよりもパージ孔の数（すなわち、パージ孔全体の開口面積）を低減させることができて、パージ孔から共鳴空間内に流入するパージ用空気の消費量を低減させることができる。
また、パージ孔から共鳴空間内に流入するパージ用空気は、燃焼筒の壁面に沿って、孔全体を覆うように（ブロックするように）流れることとなる（すなわち、共鳴空間内の燃焼筒の壁面近傍に、パージ用空気による空気の層が形成されることとなる）ので、燃焼筒内から共鳴空間内への高温燃焼ガスの流入が抑制されることとなる。 According to the acoustic liner for a gas turbine combustor according to the present invention, the purge holes are provided only on one side surface and the other side surface of the housing. The opening area of the entire hole) can be reduced, and the consumption of purge air flowing into the resonance space from the purge hole can be reduced.
Further, the purge air flowing into the resonance space from the purge hole flows along the wall surface of the combustion cylinder so as to cover (block) the entire hole (that is, the combustion cylinder in the resonance space). Since an air layer is formed by purge air in the vicinity of the wall surface, the flow of high-temperature combustion gas from the combustion cylinder into the resonance space is suppressed.

本発明に係るガスタービン燃焼器用の音響ライナーは、内部に燃焼領域が形成される燃焼筒の、周方向の一部を除く壁面に、周方向に沿って穿設された多数の孔と、これら多数の孔が穿設された領域における前記燃焼筒の外周側を取り囲むように配置され、前記燃焼筒の壁面との間に共鳴空間が形成される２つのハウジングとを備えたガスタービン燃焼器用の音響ライナーであって、前記ハウジングの一側面および他側面の双方に、周方向に沿うとともにその全周にわたって複数のパージ孔が均等に穿設され、かつ、前記一側面に穿設された前記パージ孔と、前記他側面に穿設された前記パージ孔とが、周方向において重ならないように配置され、前記燃焼筒の壁面に穿設された孔の開口面積よりも前記パージ孔の開口面積が大きく、該パージ孔から前記共鳴空間内に流入する空気が前記燃焼筒の壁面に沿って流れることにより前記燃焼筒の壁面近傍に空気の層が形成されている。 An acoustic liner for a gas turbine combustor according to the present invention includes a plurality of holes drilled along a circumferential direction on a wall surface excluding a part of a circumferential direction of a combustion cylinder in which a combustion region is formed. A gas turbine combustor comprising two housings that are disposed so as to surround an outer peripheral side of the combustion cylinder in a region where a large number of holes are formed, and in which a resonance space is formed between the combustion cylinder and a wall surface of the combustion cylinder. A purge that is an acoustic liner, wherein both the one side surface and the other side surface of the housing are provided with a plurality of purge holes uniformly along the circumferential direction and over the entire circumference, and the one side surface is provided with the purge. A hole and the purge hole formed in the other side surface are arranged so as not to overlap in the circumferential direction, and the opening area of the purge hole is larger than the opening area of the hole formed in the wall surface of the combustion cylinder. Big, the par And a layer of air is formed in the vicinity of the wall surface of the combustion cylinder by air flowing into the resonant space flows along the wall surface of the combustion liner through the hole.

本発明に係るガスタービン燃焼器用の音響ライナーは、内部に燃焼領域が形成される燃焼筒の上流側に位置する壁面に、周方向に沿って穿設された多数の孔と、これら多数の孔が穿設された領域における前記燃焼筒の外周側を取り囲むように配置され、前記燃焼筒の壁面との間に共鳴空間が形成されるハウジングとを備え、内部に燃焼領域が形成される燃焼筒の下流側に位置する、周方向の一部を除く壁面に、周方向に沿って穿設された多数の孔と、これら多数の孔が穿設された領域における前記燃焼筒の外周側を取り囲むように配置され、前記燃焼筒の壁面との間に共鳴空間が形成される２つのハウジングとを備えたガスタービン燃焼器用の音響ライナーであって、前記ハウジングの一側面および他側面の双方に、周方向に沿うとともにその全周にわたって複数のパージ孔が均等に穿設され、かつ、前記一側面に穿設された前記パージ孔と、前記他側面に穿設された前記パージ孔とが、周方向において重ならないように配置され、前記燃焼筒の壁面に穿設された孔の開口面積よりも前記パージ孔の開口面積が大きく、該パージ孔から前記共鳴空間内に流入する空気が前記燃焼筒の壁面に沿って流れることにより前記燃焼筒の壁面近傍に空気の層が形成されている。 An acoustic liner for a gas turbine combustor according to the present invention includes a plurality of holes drilled along a circumferential direction on a wall surface located upstream of a combustion cylinder in which a combustion region is formed, and the plurality of holes. A combustion cylinder that is disposed so as to surround the outer peripheral side of the combustion cylinder in the region where the hole is formed, and that has a housing in which a resonance space is formed between the combustion cylinder and a wall surface of the combustion cylinder, and in which a combustion area is formed And surrounding the outer peripheral side of the combustion cylinder in a region in which a large number of holes are formed in the wall surface excluding a part in the circumferential direction and in the region in which these many holes are formed. And an acoustic liner for a gas turbine combustor including two housings in which a resonance space is formed between the combustion cylinder and a wall surface of the combustion cylinder, on both one side surface and the other side surface of the housing, Along the circumferential direction A plurality of purge holes are equally drilled over the entire circumference, and the purge hole drilled in the one side surface and the purge hole drilled in the other side surface do not overlap in the circumferential direction. The purge hole has a larger opening area than a hole formed in the wall of the combustion cylinder, and air flowing into the resonance space from the purge hole flows along the wall of the combustion cylinder. Thus, an air layer is formed in the vicinity of the wall surface of the combustion cylinder .

上記ガスタービン燃焼器用の音響ライナーにおいて、前記ハウジングの内部に、前記共鳴空間を周方向に仕切る仕切板が設けられているとさらに好適である。
このようなガスタービン燃焼器用の音響ライナーによれば、パージ孔を介して供給されたパージ用空気の、共鳴空間内における周方向への拡散を防止することができるので、パージ孔から共鳴空間内に流入するパージ用空気を、例えば、燃焼筒内の静圧が高くなり、燃焼筒内の高温燃焼ガスが共鳴空間内に噴出してくる場所に、より集中的（より効果的）に供給することができ、より少ないパージ用空気を用いて、燃焼筒内から共鳴空間内への高温燃焼ガスの流入を効率よく抑制することができる。 In the acoustic liner for a gas turbine combustor, it is more preferable that a partition plate for partitioning the resonance space in the circumferential direction is provided inside the housing.
According to such an acoustic liner for a gas turbine combustor, the purge air supplied through the purge hole can be prevented from diffusing in the circumferential direction in the resonance space. For example, the purge air flowing into the combustion cylinder is supplied more concentratedly (more effectively) to the place where the static pressure in the combustion cylinder becomes high and the high-temperature combustion gas in the combustion cylinder is ejected into the resonance space. Therefore, the flow of high-temperature combustion gas from the combustion cylinder into the resonance space can be efficiently suppressed by using less purge air.

上記ガスタービン燃焼器用の音響ライナーにおいて、前記パージ孔は、周方向に一定幅を有するスリット状の孔であるとさらに好適である。 In the acoustic liner for a gas turbine combustor, it is more preferable that the purge hole is a slit-like hole having a constant width in the circumferential direction.

本発明に係るガスタービン燃焼器またはガスタービンは、パージ用空気の消費量を適正な量とすることができ、ガスタービン燃焼器で燃焼される燃焼用空気の量を増加させることができるガスタービン燃焼器用の音響ライナーを備えている。
本発明に係るガスタービン燃焼器またはガスタービンによれば、パージ用空気の消費量が低減した分、ガスタービン燃焼器で燃焼される燃焼用空気の消費量を増加させることができ、燃焼ガスの温度を低減させることができて、ＮＯ_Ｘ（窒素酸化物）の発生量（排出量）を低減させることができる。 In the gas turbine combustor or the gas turbine according to the present invention, the amount of purge air consumed can be set to an appropriate amount, and the amount of combustion air burned in the gas turbine combustor can be increased. An acoustic liner for the combustor is provided.
According to the gas turbine combustor or the gas turbine according to the present invention, the consumption of the combustion air burned in the gas turbine combustor can be increased by the amount corresponding to the reduction in the consumption of the purge air. The temperature can be reduced, and the generation amount (discharge amount) of NO _X (nitrogen oxide) can be reduced.

本発明によれば、パージ用空気の消費量を適正な量とすることができ、ガスタービンの燃焼器で燃焼される燃焼用空気の量を増加させることができて、燃焼ガスの温度を低減させることができるとともに、ＮＯ_Ｘの発生量（排出量）を低減させることができるという効果を奏する。 According to the present invention, the amount of purge air consumed can be set to an appropriate amount, the amount of combustion air burned in the combustor of the gas turbine can be increased, and the temperature of the combustion gas can be reduced. it is possible to, an effect that the generation amount of the NO _X (the discharge amount) can be reduced.

本発明の第１参考実施形態に係る音響ライナーを具備したガスタービン燃焼器の要部断面図である。It is principal part sectional drawing of the gas turbine combustor which comprised the acoustic liner which concerns on 1st reference embodiment of this invention. 図１のＡ−Ａ矢視断面図である。It is AA arrow sectional drawing of FIG. 本発明の第１参考実施形態に係る音響ライナーの一部を示す図であって、（ａ）は平面図、（ｂ）は斜視図である。It is a figure which shows a part of acoustic liner which concerns on 1st reference embodiment of this invention, Comprising: (a) is a top view, (b) is a perspective view. 燃焼筒の壁面近傍における静圧と周方向角度との関係、燃焼筒の壁面近傍におけるキャビティ内温度と周方向角度との関係を示すグラフである。It is a graph which shows the relationship between the static pressure in the wall surface vicinity of a combustion cylinder, and the circumferential direction angle, and the relationship between the temperature in a cavity in the wall surface vicinity of a combustion cylinder, and the circumferential direction angle. 本発明の第２参考実施形態に係る音響ライナーの一部を示す図であって、（ａ）は平面図、（ｂ）は斜視図である。It is a figure which shows a part of acoustic liner which concerns on 2nd reference embodiment of this invention, Comprising: (a) is a top view, (b) is a perspective view. 本発明の第３参考実施形態に係る音響ライナーの一部を示す斜視図である。It is a perspective view which shows a part of acoustic liner which concerns on 3rd reference embodiment of this invention. 本発明の第４参考実施形態に係る音響ライナーの一部を示す斜視図である。It is a perspective view which shows a part of acoustic liner which concerns on 4th reference embodiment of this invention. 本発明の第１実施形態に係る音響ライナーの一部を示す斜視図である。It is a perspective view showing some acoustic liners concerning a 1st embodiment of the present invention. 本発明の第５参考実施形態に係る音響ライナーの一部を示す斜視図である。It is a perspective view which shows a part of acoustic liner which concerns on 5th reference embodiment of this invention. 本発明の第２実施形態に係る音響ライナーの一部を示す斜視図である。It is a perspective view which shows a part of acoustic liner concerning 2nd Embodiment of this invention. 本発明の第３実施形態に係る音響ライナーの一部を示す斜視図である。It is a perspective view which shows a part of acoustic liner concerning 3rd Embodiment of this invention.

以下、本発明に係るガスタービン燃焼器用の音響ライナーの第１参考実施形態を、図１から図４を参照しながら説明する。
図１は本実施形態に係るガスタービン燃焼器用の音響ライナーを具備したガスタービン燃焼器の要部断面図、図２は図１のＡ−Ａ矢視断面図、図３は本実施形態に係るガスタービン燃焼器用の音響ライナーの一部を示す図であって、（ａ）は平面図、（ｂ）は斜視図、図４は燃焼筒の壁面近傍における静圧と周方向角度との関係、燃焼筒の壁面近傍におけるキャビティ（共鳴空間）内温度と周方向角度との関係を示すグラフである。 Hereinafter, a first reference embodiment of an acoustic liner for a gas turbine combustor according to the present invention will be described with reference to FIGS. 1 to 4.
1 is a cross-sectional view of a main part of a gas turbine combustor equipped with an acoustic liner for a gas turbine combustor according to the present embodiment, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is according to the present embodiment. It is a figure which shows a part of acoustic liner for gas turbine combustors, Comprising: (a) is a top view, (b) is a perspective view, FIG. 4 is the relationship between the static pressure and circumferential angle in the wall surface of a combustion cylinder, It is a graph which shows the relationship between the temperature in a cavity (resonance space) and the circumferential direction angle in the wall surface vicinity of a combustion cylinder.

図１に示すように、本実施形態に係るガスタービン燃焼器用の音響ライナー（以下、「音響ライナー」という。）１１を具備したガスタービン燃焼器（以下、「燃焼器」という。）１は、燃焼筒２を備えている。燃焼筒２は、内部に燃焼領域３を形成し、外部に圧縮空気流４と接する筒状をなしている。燃焼筒２の上流側には、複数本（本実施形態では８本）の予混合ノズル５と、１本のパイロットノズル６とが設けられている。また、燃焼筒２の下流側に位置する壁面には、空気を導入するためのバイパス流路８が設けられている。
なお、予混合ノズル５は、周方向に沿って等間隔（４５°間隔）に設けられており、パイロットノズル６は、予混合ノズル５の略中央部に位置するように設けられている。 As shown in FIG. 1, a gas turbine combustor (hereinafter referred to as “combustor”) 1 including an acoustic liner (hereinafter referred to as “acoustic liner”) 11 for a gas turbine combustor according to the present embodiment is provided. A combustion cylinder 2 is provided. The combustion cylinder 2 forms a combustion region 3 inside, and has a cylindrical shape in contact with the compressed air flow 4 on the outside. A plurality (eight in this embodiment) of premixing nozzles 5 and one pilot nozzle 6 are provided on the upstream side of the combustion cylinder 2. A bypass channel 8 for introducing air is provided on the wall surface located on the downstream side of the combustion cylinder 2.
The premixing nozzles 5 are provided at regular intervals (45 ° intervals) along the circumferential direction, and the pilot nozzles 6 are provided so as to be positioned substantially at the center of the premixing nozzles 5.

さて、本実施形態に係る音響ライナー１１は、図２に示すように、燃焼筒２の壁面に、周方向に沿って穿設された多数の孔１１ａと、これら孔１１ａが設けられた領域における燃焼筒２の外周側（燃焼筒２から見て冷却空気領域４に接する側）を取り囲むように配置され、燃焼筒２の壁面との間にキャビティ（共鳴空間）を形成するハウジング１１ｂとを主たる要素として構成されたものである。 Now, as shown in FIG. 2, the acoustic liner 11 according to the present embodiment has a large number of holes 11a drilled along the circumferential direction in the wall surface of the combustion cylinder 2, and a region in which these holes 11a are provided. The housing 11b is disposed so as to surround the outer peripheral side of the combustion cylinder 2 (the side in contact with the cooling air region 4 when viewed from the combustion cylinder 2) and forms a cavity (resonance space) between the combustion cylinder 2 and the wall surface. It is structured as an element.

ハウジング１１ｂは、燃焼筒２の外周を一周するように取り付けられており、ハウジング１１ｂの内部に仕切りは設けられておらず、ハウジング１１ｂの内部は、一体的な空間をなしている。 The housing 11b is attached so as to go around the outer periphery of the combustion cylinder 2, and no partition is provided inside the housing 11b, and the inside of the housing 11b forms an integral space.

図２中の符号１３は、燃焼領域３において他よりも高温となる高温領域である。この高温領域１３は、概ね予混合ノズル５の下流に位置している。そして、この高温領域１３に近い場所における燃焼筒２の壁面には、孔１１ａが多く設けられており、高温領域１３からより遠い場所における燃焼筒２の壁面には、孔１１ａがより少なく設けられているか、または孔１１ａが設けられていない。 Reference numeral 13 in FIG. 2 is a high temperature region in the combustion region 3 where the temperature is higher than the others. This high temperature region 13 is located generally downstream of the premixing nozzle 5. The wall surface of the combustion cylinder 2 at a location close to the high temperature region 13 is provided with many holes 11a, and the wall surface of the combustion cylinder 2 at a location farther from the high temperature region 13 is provided with fewer holes 11a. Or the hole 11a is not provided.

また、図３に示すように、ハウジング１１ｂの、燃焼筒２の壁面と対向する面（外周面）には、パージ孔１４が設けられている。
パージ孔１４は、周方向に沿って複数個（本実施形態では８個）穿設されている。パージ孔１４はそれぞれ、ガスタービンが運転されているときに、燃焼筒２内（燃焼領域３）の静圧が高くなり、それに伴って燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所に対応して設けられている。 Moreover, as shown in FIG. 3, the purge hole 14 is provided in the surface (outer peripheral surface) facing the wall surface of the combustion cylinder 2 of the housing 11b.
A plurality (eight in this embodiment) of the purge holes 14 are formed along the circumferential direction. When the gas turbine is operated, the purge hole 14 has a high static pressure in the combustion cylinder 2 (combustion region 3), and accordingly, high-temperature combustion gas in the combustion cylinder 2 is injected into the cavity. It is provided corresponding to the place to come.

ガスタービンが運転されているときに、燃焼筒２内の静圧が高くなり、それに伴って燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所（周方向における位置および軸方向における位置）は、ＣＦＤ等の数値計算を用いて解析する（求める）ことができる。図４はその解析結果の一具体例を示すグラフである。図４中の実線は燃焼筒２の壁面近傍における静圧と周方向角度との関係を示しており、図４中の破線は燃焼筒２の壁面近傍におけるキャビティ内温度と周方向角度との関係を示している。また、図４から、破線と実線のピーク（最大値）が、周方向に沿って等間隔（４５°間隔）に現れていることがわかる。これは予混合ノズル５の配置間隔と同じである。
なお、ガスタービンが運転されているときに、燃焼筒２内の静圧が高くなり、それに伴って燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所は、ガスタービン（あるいはガスタービン燃焼器）の機種毎に異なるので、機種毎にＣＦＤ等の数値計算を用いて特定する必要がある。 When the gas turbine is in operation, the static pressure in the combustion cylinder 2 is increased, and accordingly, the hot combustion gas in the combustion cylinder 2 is ejected into the cavity (position in the circumferential direction and in the axial direction). The position) can be analyzed (determined) using numerical calculation such as CFD. FIG. 4 is a graph showing a specific example of the analysis result. The solid line in FIG. 4 shows the relationship between the static pressure near the wall surface of the combustion cylinder 2 and the circumferential angle, and the broken line in FIG. 4 shows the relationship between the temperature in the cavity near the wall surface of the combustion cylinder 2 and the circumferential angle. Is shown. Further, it can be seen from FIG. 4 that the peaks (maximum values) of the broken line and the solid line appear at equal intervals (45 ° intervals) along the circumferential direction. This is the same as the arrangement interval of the premixing nozzles 5.
In addition, when the gas turbine is operated, the static pressure in the combustion cylinder 2 is increased, and accordingly, the place where the high-temperature combustion gas in the combustion cylinder 2 is ejected into the cavity is the gas turbine (or gas Since it differs depending on the type of the turbine combustor), it is necessary to specify for each model using numerical calculation such as CFD.

本実施形態に係る音響ライナー１１によれば、パージ孔１４が、燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所のみに設けられることとなるので、従来のものよりもパージ孔１４の数（すなわち、パージ孔１４全体の開口面積）を低減させることができて、パージ孔１４からキャビティ内に流入するパージ用空気の消費量を低減させることができる。
また、パージ孔１４からキャビティ内に流入するパージ用空気は、燃焼筒２内の静圧が高くなり、燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所に、パージ孔１４を介してパージ用空気が集中的（ピンポイント的）に供給されることとなるので、パージ用空気の動圧により、燃焼筒２内からキャビティ内への高温燃焼ガスの流入が抑制されることとなる。 According to the acoustic liner 11 according to the present embodiment, the purge hole 14 is provided only in a place where the high-temperature combustion gas in the combustion cylinder 2 is ejected into the cavity, so that the purge hole is more than the conventional one. 14 (that is, the opening area of the entire purge hole 14) can be reduced, and the consumption of purge air flowing from the purge hole 14 into the cavity can be reduced.
Further, the purge air flowing into the cavity from the purge hole 14 has a high static pressure in the combustion cylinder 2, and the purge hole 14 is formed at a place where the high-temperature combustion gas in the combustion cylinder 2 is ejected into the cavity. Since the purge air is supplied intensively (pinpoint) through the air, the inflow of high-temperature combustion gas from the combustion cylinder 2 into the cavity is suppressed by the dynamic pressure of the purge air. Become.

そして、このような音響ライナー１１を具備したガスタービン燃焼器１またはガスタービンによれば、パージ用空気の消費量が低減した分、ガスタービン燃焼器１で燃焼される燃焼用空気の消費量を増加させることができ、燃焼ガスの温度を低減させることができて、ＮＯ_Ｘ（窒素酸化物）の発生量（排出量）を低減させることができる。 And according to the gas turbine combustor 1 or gas turbine provided with such an acoustic liner 11, the consumption of the combustion air combusted by the gas turbine combustor 1 is reduced by the amount of the purge air consumption reduced. It can be increased, the temperature of the combustion gas can be reduced, and the generation amount (discharge amount) of NO _X (nitrogen oxide) can be reduced.

本発明に係る音響ライナーの第２参考実施形態を、図５を用いて説明する。
図５は本実施形態に係る音響ライナーの一部を示す図であって、（ａ）は平面図、（ｂ）は斜視図である。
本実施形態に係る音響ライナー２０は、パージ孔１４の代わりにパージ孔２１が設けられているという点で上述した第１参考実施形態のものと異なる。その他の構成要素については上述した第１参考実施形態のものと同じであるので、ここではそれら構成要素についての説明は省略する。
なお、上述した第１参考実施形態と同一の部材には同一の符号を付している。 A second reference embodiment of the acoustic liner according to the present invention will be described with reference to FIG.
FIG. 5 is a view showing a part of the acoustic liner according to the present embodiment, in which (a) is a plan view and (b) is a perspective view.
The acoustic liner 20 according to this embodiment is different from that of the first reference embodiment described above in that a purge hole 21 is provided instead of the purge hole 14. Since other components are the same as those of the first reference embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 1st reference embodiment mentioned above.

図５に示すように、パージ孔２１は、ガスタービンが運転されているときに、燃焼筒２内（燃焼領域３）の静圧が高くなり、それに伴って燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所にそれぞれ、周方向に３列、軸方向に３列、合計９個ずつ設けられている。パージ孔２１はそれぞれ、上述したパージ孔１４よりも小さな直径を有しており、パージ孔２１全体の開口面積は、上述したパージ孔１４全体の開口面積と略同じになるように設定されている。 As shown in FIG. 5, when the gas turbine is operated, the purge hole 21 has a high static pressure in the combustion cylinder 2 (combustion region 3), and accordingly, the high-temperature combustion gas in the combustion cylinder 2 is reduced. A total of nine places are provided at three locations in the circumferential direction and three rows in the axial direction, respectively, at locations where the air is ejected into the cavity. Each purge hole 21 has a smaller diameter than the purge hole 14 described above, and the entire opening area of the purge hole 21 is set to be substantially the same as the entire opening area of the purge hole 14 described above. .

本実施形態に係る音響ライナー２０によれば、パージ孔２１が、燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所のみに設けられることとなるので、従来のものよりもパージ孔２１の数（すなわち、パージ孔２１全体の開口面積）を低減させることができて、パージ孔２１からキャビティ内に流入するパージ用空気の消費量を低減させることができる。
また、パージ孔２１からキャビティ内に流入するパージ用空気は、燃焼筒２内の静圧が高くなり、燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所に、パージ孔２１を介してパージ用空気が集中的（ピンポイント的）に供給されることとなるので、パージ用空気の動圧により、燃焼筒２内からキャビティ内への高温燃焼ガスの流入が抑制されることとなる。
なお、パージ孔２１の数が多い分、パージ孔１４の孔１個の場合より広い範囲で高温燃焼ガスの噴出を抑制できる反面、パージ孔２１から噴出されるパージ用空気の噴流は、上述したパージ孔１４から噴出されるパージ用空気の噴流よりも弱くなる。したがって、パージ孔２１全体の開口面積を保ったままでパージ孔の数を調整することにより、パージ用空気の噴流強さを調整することができる。 According to the acoustic liner 20 according to the present embodiment, the purge hole 21 is provided only in the place where the high-temperature combustion gas in the combustion cylinder 2 is ejected into the cavity, so that the purge hole 21 is more than the conventional one. 21 (ie, the opening area of the entire purge hole 21) can be reduced, and the consumption of purge air flowing from the purge hole 21 into the cavity can be reduced.
Further, the purge air flowing into the cavity from the purge hole 21 has a high static pressure in the combustion cylinder 2, and the purge hole 21 is formed at a place where the high-temperature combustion gas in the combustion cylinder 2 is ejected into the cavity. Since the purge air is supplied intensively (pinpoint) through the air, the inflow of high-temperature combustion gas from the combustion cylinder 2 into the cavity is suppressed by the dynamic pressure of the purge air. Become.
Although the number of purge holes 21 is large, the ejection of high-temperature combustion gas can be suppressed in a wider range than in the case of one purge hole 14, but the jet of purge air ejected from the purge hole 21 has been described above. It becomes weaker than the jet of purge air ejected from the purge hole 14. Therefore, the jet strength of the purge air can be adjusted by adjusting the number of purge holes while maintaining the entire opening area of the purge hole 21.

そして、このような音響ライナー２０を具備したガスタービン燃焼器１またはガスタービンによれば、パージ用空気の消費量が低減した分、ガスタービン燃焼器１で燃焼される燃焼用空気の消費量を増加させることができ、燃焼ガスの温度を低減させることができて、ＮＯ_Ｘ（窒素酸化物）の発生量（排出量）を低減させることができる。 And according to the gas turbine combustor 1 or gas turbine provided with such an acoustic liner 20, the consumption of the combustion air burned in the gas turbine combustor 1 is reduced by the amount of the consumption of the purge air reduced. It can be increased, the temperature of the combustion gas can be reduced, and the generation amount (discharge amount) of NO _X (nitrogen oxide) can be reduced.

本発明に係る音響ライナーの第３参考実施形態を、図６を用いて説明する。図６は本実施形態に係る音響ライナーの一部を示す斜視図である。
本実施形態に係る音響ライナー３０は、パージ孔１４，２１の代わりにパージ孔３１が設けられているという点で上述した実施形態のものと異なる。その他の構成要素については上述した実施形態のものと同じであるので、ここではそれら構成要素についての説明は省略する。
なお、上述した実施形態と同一の部材には同一の符号を付している。 A third reference embodiment of the acoustic liner according to the present invention will be described with reference to FIG. FIG. 6 is a perspective view showing a part of the acoustic liner according to the present embodiment.
The acoustic liner 30 according to this embodiment is different from that of the above-described embodiment in that a purge hole 31 is provided instead of the purge holes 14 and 21. Since other components are the same as those in the above-described embodiment, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as embodiment mentioned above.

図６に示すように、パージ孔３１は、ハウジング１１ｂの一側面（本実施形態では上流側の側面）に、周方向に沿うとともにその全周にわたって均等に配置されている。 As shown in FIG. 6, the purge holes 31 are arranged uniformly on one side surface of the housing 11 b (upstream side surface in the present embodiment) along the circumferential direction and over the entire circumference.

本実施形態に係る音響ライナー３０によれば、パージ孔３１が、ハウジング１１ｂの一側面のみに設けられることとなるので、従来のものよりもパージ孔３１の数（すなわち、パージ孔３１全体の開口面積）を低減させることができて、パージ孔３１からキャビティ内に流入するパージ用空気の消費量を低減させることができる。
また、パージ孔３１からキャビティ内に流入するパージ用空気は、燃焼筒２の壁面に沿って、孔１１ａ全体を覆うように（ブロックするように）流れることとなる（すなわち、キャビティ内の燃焼筒２の壁面近傍に、パージ用空気による空気の層が形成されることとなる）ので、燃焼筒２内からキャビティ内への高温燃焼ガスの流入が抑制されることとなる。 According to the acoustic liner 30 according to the present embodiment, since the purge holes 31 are provided only on one side surface of the housing 11b, the number of the purge holes 31 (that is, the opening of the entire purge hole 31 is larger than the conventional one). Area) can be reduced, and the consumption of purge air flowing into the cavity from the purge hole 31 can be reduced.
The purge air flowing into the cavity from the purge hole 31 flows along the wall surface of the combustion cylinder 2 so as to cover (block) the entire hole 11a (that is, the combustion cylinder in the cavity). 2), an air layer of purge air is formed in the vicinity of the wall surface 2), so that the flow of high-temperature combustion gas from the combustion cylinder 2 into the cavity is suppressed.

そして、このような音響ライナー３０を具備したガスタービン燃焼器１またはガスタービンによれば、パージ用空気の消費量が低減した分、ガスタービン燃焼器１で燃焼される燃焼用空気の消費量を増加させることができ、燃焼ガスの温度を低減させることができて、ＮＯ_Ｘ（窒素酸化物）の発生量（排出量）を低減させることができる。 And according to the gas turbine combustor 1 or gas turbine provided with such an acoustic liner 30, the consumption of the combustion air combusted by the gas turbine combustor 1 is reduced by the amount of the purge air consumption reduced. It can be increased, the temperature of the combustion gas can be reduced, and the generation amount (discharge amount) of NO _X (nitrogen oxide) can be reduced.

本発明に係る音響ライナーの第４参考実施形態を、図７を用いて説明する。図７は本実施形態に係る音響ライナーの一部を示す斜視図である。
本実施形態に係る音響ライナー４０は、パージ孔３１の代わりにパージ孔４１が設けられているという点で上述した第１実施形態のものと異なる。その他の構成要素については上述した第１実施形態のものと同じであるので、ここではそれら構成要素についての説明は省略する。
なお、上述した第１実施形態と同一の部材には同一の符号を付している。 A fourth reference embodiment of the acoustic liner according to the present invention will be described with reference to FIG. FIG. 7 is a perspective view showing a part of the acoustic liner according to the present embodiment.
The acoustic liner 40 according to this embodiment is different from that of the first embodiment described above in that a purge hole 41 is provided instead of the purge hole 31. Since other components are the same as those of the first embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 1st Embodiment mentioned above.

図７に示すように、パージ孔４１は、ガスタービンが運転されているときに、燃焼筒２内（燃焼領域３）の静圧が高くなり、それに伴って燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所に集中的に（局所的に）設けられている。 As shown in FIG. 7, when the gas turbine is operated, the purge hole 41 has a high static pressure in the combustion cylinder 2 (combustion region 3). It is provided in a concentrated manner (locally) at a place where it is ejected into the cavity.

本実施形態に係る音響ライナー４０によれば、パージ孔４１が、燃焼筒２内の静圧が高くなり、燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所のみに設けられることとなるので、上述した第１実施形態のものよりもパージ孔４１の数（すなわち、パージ孔４１全体の開口面積）を低減させることができて、パージ孔４１からキャビティ内に流入するパージ用空気の消費量をさらに低減させることができる。
また、パージ孔４１からキャビティ内に流入するパージ用空気は、ガスタービンが運転されているときに、燃焼筒２内（燃焼領域３）の静圧が高くなり、それに伴って燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所の燃焼筒２の壁面に沿って、当該場所の孔１１ａを覆うように（ブロックするように）流れることとなる（すなわち、キャビティ内の燃焼筒２の壁面近傍に、パージ用空気による空気の層が形成されることとなる）ので、燃焼筒２内からキャビティ内への高温燃焼ガスの流入が抑制されることとなる。 According to the acoustic liner 40 according to the present embodiment, the purge hole 41 is provided only in a place where the static pressure in the combustion cylinder 2 becomes high and the high-temperature combustion gas in the combustion cylinder 2 is ejected into the cavity. Therefore, the number of purge holes 41 (that is, the entire opening area of the purge holes 41) can be reduced as compared with the first embodiment described above, and the purge air flowing into the cavity from the purge holes 41 can be reduced. Consumption can be further reduced.
Further, the purge air flowing into the cavity from the purge hole 41 has a high static pressure in the combustion cylinder 2 (combustion region 3) when the gas turbine is operated, and accordingly, The high-temperature combustion gas flows along the wall surface of the combustion cylinder 2 where the high-temperature combustion gas is ejected into the cavity so as to cover (block) the hole 11a at the position (that is, the combustion cylinder 2 in the cavity). As a result, an air layer of purge air is formed in the vicinity of the wall surface of the gas, so that inflow of high-temperature combustion gas from the combustion cylinder 2 into the cavity is suppressed.

そして、このような音響ライナー４０を具備したガスタービン燃焼器１またはガスタービンによれば、パージ用空気の消費量が低減した分、ガスタービン燃焼器１で燃焼される燃焼用空気の消費量を増加させることができ、燃焼ガスの温度を低減させることができて、ＮＯ_Ｘ（窒素酸化物）の発生量（排出量）を低減させることができる。 And according to the gas turbine combustor 1 or gas turbine provided with such an acoustic liner 40, the consumption of the combustion air combusted by the gas turbine combustor 1 is reduced by the amount of the consumption of the purge air reduced. It can be increased, the temperature of the combustion gas can be reduced, and the generation amount (discharge amount) of NO _X (nitrogen oxide) can be reduced.

本発明に係る音響ライナーの第１実施形態を、図８を用いて説明する。図８は本実施形態に係る音響ライナーの一部を示す斜視図である。
本実施形態に係る音響ライナー５０は、パージ孔１４，２１の代わりにパージ孔５１が設けられているという点で上述した第１参考実施形態および第２参考実施形態のものと異なる。その他の構成要素については上述した第１参考実施形態および第２参考実施形態のものと同じであるので、ここではそれら構成要素についての説明は省略する。
なお、上述した第１参考実施形態および第２参考実施形態と同一の部材には同一の符号を付している。 A first embodiment of an acoustic liner according to the present invention will be described with reference to FIG. FIG. 8 is a perspective view showing a part of the acoustic liner according to the present embodiment.
The acoustic liner 50 according to this embodiment is different from those of the first reference embodiment and the second reference embodiment described above in that a purge hole 51 is provided instead of the purge holes 14 and 21. Since other components are the same as those of the first reference embodiment and the second reference embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 1st reference embodiment mentioned above and 2nd reference embodiment.

図８に示すように、パージ孔５１は、ハウジング１１ｂの両側面（上流側の側面および下流側の側面）に、周方向に沿うとともにその全周にわたって均等に配置されている。パージ孔５１はそれぞれ、一の側面のパージ孔５１と、他の側面のパージ孔５１とが周方向において重ならないように、すなわち、一の側面のパージ孔５１が、他の側面のパージ孔５１とパージ孔５１との略中間に位置するように形成されている。また、パージ孔５１はそれぞれ、上述したパージ孔３１と同じ略直径を有しており、パージ孔５１の数は、上述したパージ孔３１の数と略同じになるように設定されている。 As shown in FIG. 8, the purge holes 51 are evenly arranged on both side surfaces (upstream side surface and downstream side surface) of the housing 11 b along the circumferential direction and over the entire circumference. The purge holes 51 are arranged so that the purge holes 51 on one side and the purge holes 51 on the other side do not overlap in the circumferential direction, that is, the purge hole 51 on one side is the purge hole 51 on the other side. And the purge hole 51. Each purge hole 51 has the same approximate diameter as the purge hole 31 described above, and the number of purge holes 51 is set to be substantially the same as the number of purge holes 31 described above.

本実施形態に係る音響ライナー５０によれば、パージ孔５１が、ハウジング１１ｂの両側面のみに設けられることとなるので、従来のものよりもパージ孔５１の数（すなわち、パージ孔５１全体の開口面積）を低減させることができて、パージ孔５１からキャビティ内に流入するパージ用空気の消費量を低減させることができる。
また、パージ孔５１からキャビティ内に流入するパージ用空気は、燃焼筒２の壁面に沿って、孔１１ａ全体を覆うように（ブロックするように）流れることとなる（すなわち、キャビティ内の燃焼筒２の壁面近傍に、パージ用空気による空気の層が形成されることとなる）ので、燃焼筒２内からキャビティ内への高温燃焼ガスの流入が抑制されることとなる。 According to the acoustic liner 50 according to the present embodiment, since the purge holes 51 are provided only on both side surfaces of the housing 11b, the number of the purge holes 51 (that is, the opening of the entire purge hole 51 is larger than the conventional one). Area) can be reduced, and the consumption of purge air flowing into the cavity from the purge hole 51 can be reduced.
Further, the purge air flowing into the cavity from the purge hole 51 flows along the wall surface of the combustion cylinder 2 so as to cover (block) the entire hole 11a (that is, the combustion cylinder in the cavity). 2), an air layer of purge air is formed in the vicinity of the wall surface 2), so that the flow of high-temperature combustion gas from the combustion cylinder 2 into the cavity is suppressed.

そして、このような音響ライナー５０を具備したガスタービン燃焼器１またはガスタービンによれば、パージ用空気の消費量が低減した分、ガスタービン燃焼器１で燃焼される燃焼用空気の消費量を増加させることができ、燃焼ガスの温度を低減させることができて、ＮＯ_Ｘ（窒素酸化物）の発生量（排出量）を低減させることができる。 And according to the gas turbine combustor 1 or gas turbine provided with such an acoustic liner 50, the consumption of the combustion air combusted by the gas turbine combustor 1 is reduced by the amount of the consumption of the purge air reduced. It can be increased, the temperature of the combustion gas can be reduced, and the generation amount (discharge amount) of NO _X (nitrogen oxide) can be reduced.

本発明に係る音響ライナーの第５参考実施形態を、図９を用いて説明する。図９は本実施形態に係る音響ライナーの一部を示す斜視図である。
本実施形態に係る音響ライナー６０は、パージ孔１４，２１の代わりにパージ孔６１が設けられているという点で上述した第１参考実施形態および第２参考実施形態のものと異なる。その他の構成要素については上述した第１参考実施形態および第２参考実施形態のものと同じであるので、ここではそれら構成要素についての説明は省略する。
なお、上述した第１参考実施形態および第２参考実施形態と同一の部材には同一の符号を付している。 A fifth reference embodiment of the acoustic liner according to the present invention will be described with reference to FIG. FIG. 9 is a perspective view showing a part of the acoustic liner according to the present embodiment.
The acoustic liner 60 according to this embodiment is different from those of the first reference embodiment and the second reference embodiment described above in that a purge hole 61 is provided instead of the purge holes 14 and 21. Since other components are the same as those of the first reference embodiment and the second reference embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 1st reference embodiment mentioned above and 2nd reference embodiment.

図９に示すように、パージ孔６１はそれぞれ、周方向に一定幅を有するスリット状（周方向に沿って延びる長孔状）の孔であり、ハウジング１１ｂの一側面（本実施形態では上流側の側面）に、周方向に沿うとともにその全周にわたって複数個（例えば、８個）配置されている。 As shown in FIG. 9, each purge hole 61 is a slit-like hole (a long hole extending along the circumferential direction) having a constant width in the circumferential direction, and one side surface of the housing 11 b (upstream side in the present embodiment). And a plurality of (for example, eight) are arranged along the circumferential direction along the circumferential direction.

本実施形態に係る音響ライナー６０によれば、パージ孔６１が、ハウジング１１ｂの一側面のみに設けられることとなるので、従来のものよりもパージ孔６１全体の開口面積を低減させることができて、パージ孔６１からキャビティ内に流入するパージ用空気の消費量を低減させることができる。
また、パージ孔６１からキャビティ内に流入するパージ用空気は、燃焼筒２の壁面に沿って、孔１１ａ全体を覆うように（ブロックするように）流れることとなる（すなわち、キャビティ内の燃焼筒２の壁面近傍に、パージ用空気による空気の層が形成されることとなる）ので、燃焼筒２内からキャビティ内への高温燃焼ガスの流入が抑制されることとなる。 According to the acoustic liner 60 according to the present embodiment, the purge hole 61 is provided only on one side surface of the housing 11b. Therefore, the entire opening area of the purge hole 61 can be reduced as compared with the conventional one. The consumption of purge air flowing into the cavity from the purge hole 61 can be reduced.
Further, the purge air flowing into the cavity from the purge hole 61 flows along the wall surface of the combustion cylinder 2 so as to cover (block) the entire hole 11a (that is, the combustion cylinder in the cavity). 2), an air layer of purge air is formed in the vicinity of the wall surface 2), so that the flow of high-temperature combustion gas from the combustion cylinder 2 into the cavity is suppressed.

そして、このような音響ライナー６０を具備したガスタービン燃焼器１またはガスタービンによれば、パージ用空気の消費量が低減した分、ガスタービン燃焼器１で燃焼される燃焼用空気の消費量を増加させることができ、燃焼ガスの温度を低減させることができて、ＮＯ_Ｘ（窒素酸化物）の発生量（排出量）を低減させることができる。 And according to the gas turbine combustor 1 or gas turbine provided with such an acoustic liner 60, the consumption of the combustion air burned in the gas turbine combustor 1 is reduced by the amount of the consumption of the purge air reduced. It can be increased, the temperature of the combustion gas can be reduced, and the generation amount (discharge amount) of NO _X (nitrogen oxide) can be reduced.

本発明に係る音響ライナーの第２実施形態を、図１０を用いて説明する。図１０は本実施形態に係る音響ライナーの一部を示す斜視図である。
本実施形態に係る音響ライナー７０は、パージ孔１４，２１の代わりにパージ孔７１が設けられているという点で上述した第１参考実施形態および第２参考実施形態のものと異なる。その他の構成要素については上述した第１参考実施形態および第２参考実施形態のものと同じであるので、ここではそれら構成要素についての説明は省略する。
なお、上述した第１参考実施形態および第２参考実施形態と同一の部材には同一の符号を付している。 A second embodiment of the acoustic liner according to the present invention will be described with reference to FIG. FIG. 10 is a perspective view showing a part of the acoustic liner according to the present embodiment.
The acoustic liner 70 according to the present embodiment is different from those of the first reference embodiment and the second reference embodiment described above in that a purge hole 71 is provided instead of the purge holes 14 and 21. Since other components are the same as those of the first reference embodiment and the second reference embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 1st reference embodiment mentioned above and 2nd reference embodiment.

図１０に示すように、パージ孔７１はそれぞれ、周方向に一定幅を有するスリット状（周方向に沿って延びる長孔状）の孔であり、ハウジング１１ｂの両側面（上流側の側面および下流側の側面）に、周方向に沿うとともにその全周にわたって均等に配置されている。パージ孔７１はそれぞれ、一の側面のパージ孔７１と、他の側面のパージ孔７１とが周方向において重ならないように、すなわち、一の側面のパージ孔７１が、他の側面のパージ孔７１とパージ孔７１との略中間に位置するように形成されている。また、パージ孔７１全体の開口面積は、上述したパージ孔６１全体の開口面積と略同じになるように設定されている。 As shown in FIG. 10, each of the purge holes 71 is a slit-like hole (a long hole extending along the circumferential direction) having a constant width in the circumferential direction, and both side surfaces (upstream side surface and downstream side) of the housing 11b. Side surface) along the circumferential direction and uniformly disposed over the entire circumference. Each of the purge holes 71 is arranged such that the purge hole 71 on one side and the purge hole 71 on the other side do not overlap in the circumferential direction, that is, the purge hole 71 on one side is the purge hole 71 on the other side. And the purge hole 71 are formed so as to be located approximately in the middle. The opening area of the entire purge hole 71 is set to be substantially the same as the opening area of the entire purge hole 61 described above.

本実施形態に係る音響ライナー７０によれば、パージ孔７１が、ハウジング１１ｂの両側面のみに設けられることとなるので、従来のものよりもパージ孔７１の数（すなわち、パージ孔７１全体の開口面積）を低減させることができて、パージ孔７１からキャビティ内に流入するパージ用空気の消費量を低減させることができる。
また、パージ孔７１からキャビティ内に流入するパージ用空気は、燃焼筒２の壁面に沿って、孔１１ａ全体を覆うように（ブロックするように）流れることとなる（すなわち、キャビティ内の燃焼筒２の壁面近傍に、パージ用空気による空気の層が形成されることとなる）ので、燃焼筒２内からキャビティ内への高温燃焼ガスの流入が抑制されることとなる。 According to the acoustic liner 70 according to the present embodiment, the purge holes 71 are provided only on both side surfaces of the housing 11b, so the number of purge holes 71 (that is, the opening of the entire purge hole 71 is larger than the conventional one). Area) can be reduced, and the consumption of purge air flowing into the cavity from the purge hole 71 can be reduced.
The purge air flowing into the cavity from the purge hole 71 flows along the wall surface of the combustion cylinder 2 so as to cover (block) the entire hole 11a (that is, the combustion cylinder in the cavity). 2), an air layer of purge air is formed in the vicinity of the wall surface 2), so that the flow of high-temperature combustion gas from the combustion cylinder 2 into the cavity is suppressed.

そして、このような音響ライナー７０を具備したガスタービン燃焼器１またはガスタービンによれば、パージ用空気の消費量が低減した分、ガスタービン燃焼器１で燃焼される燃焼用空気の消費量を増加させることができ、燃焼ガスの温度を低減させることができて、ＮＯ_Ｘ（窒素酸化物）の発生量（排出量）を低減させることができる。 And according to the gas turbine combustor 1 or gas turbine provided with such an acoustic liner 70, the consumption of the combustion air combusted by the gas turbine combustor 1 is reduced by the amount of the consumption of the purge air reduced. It can be increased, the temperature of the combustion gas can be reduced, and the generation amount (discharge amount) of NO _X (nitrogen oxide) can be reduced.

本発明に係る音響ライナーの第３実施形態を、図１１を用いて説明する。図１１は本実施形態に係る音響ライナーの一部を示す斜視図である。
本実施形態に係る音響ライナー８０は、ハウジング１１ｂの内部に、キャビティを周方向に仕切る（区切る）仕切板８１が設けられているという点で上述した実施形態のものと異なる。その他の構成要素については上述した実施形態のものと同じであるので、ここではそれら構成要素についての説明は省略する。
なお、上述した実施形態と同一の部材には同一の符号を付している。 A third embodiment of the acoustic liner according to the present invention will be described with reference to FIG. FIG. 11 is a perspective view showing a part of the acoustic liner according to the present embodiment.
The acoustic liner 80 according to the present embodiment is different from that of the above-described embodiment in that a partition plate 81 that partitions (divides) the cavity in the circumferential direction is provided inside the housing 11b. Since other components are the same as those in the above-described embodiment, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as embodiment mentioned above.

図１１に示すように、仕切板８１は、ガスタービンが運転されているときに、燃焼筒２内（燃焼領域３）の静圧が高くなり、それに伴って燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所を囲むように（仕切るように）、一箇所に対して２枚ずつ、本実施形態では合計１６枚配置されている。
なお、図１１は、仕切板８１を第１参考実施形態の音響ライナー１１に適用した例を示している。 As shown in FIG. 11, when the gas turbine is operated, the partition plate 81 has a high static pressure in the combustion cylinder 2 (combustion region 3), and accordingly, the high-temperature combustion gas in the combustion cylinder 2 is reduced. In the present embodiment, a total of 16 sheets are arranged so as to surround (partition) two places for each place so as to enclose (partition) a place where the air is ejected into the cavity.
FIG. 11 shows an example in which the partition plate 81 is applied to the acoustic liner 11 of the first reference embodiment.

本実施形態に係る音響ライナー８０によれば、例えば、パージ孔１４を介して供給されたパージ用空気の、キャビティ内における周方向への拡散を防止することができるので、パージ孔１４からキャビティ内に流入するパージ用空気を、燃焼筒２内の静圧が高くなり、燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所に、より集中的（より効果的）に供給することができ、より少ないパージ用空気を用いて、燃焼筒２内からキャビティ内への高温燃焼ガスの流入を効率よく抑制することができる。 According to the acoustic liner 80 according to the present embodiment, for example, the purge air supplied through the purge hole 14 can be prevented from diffusing in the circumferential direction in the cavity. The purge air that flows into the combustion cylinder 2 is supplied more concentratedly (more effectively) to the place where the static pressure in the combustion cylinder 2 becomes high and the high-temperature combustion gas in the combustion cylinder 2 is ejected into the cavity. Therefore, the flow of high-temperature combustion gas from the combustion cylinder 2 into the cavity can be efficiently suppressed by using less purge air.

なお、上述した実施形態においては、各パージ孔が、他のパージ孔と同じ（あるいは略同じ）大きさ（開口面積）になるように穿設されたものを一具体例として説明してきた。しかし、本発明はこれらのものに限定されるものではなく、例えば、燃焼筒２内の静圧が高くなり、燃焼筒２内の高温燃焼ガスがキャビティ内に噴出してくる場所の近傍に位置するパージ孔の大きさを大きくし、その他の場所に位置するパージ孔の大きさを小さくする等、適宜必要に応じて周方向におけるパージ孔の大きさを変えることもできる。 In the above-described embodiment, the case where each purge hole is formed so as to have the same (or substantially the same) size (opening area) as the other purge holes has been described as a specific example. However, the present invention is not limited to these. For example, the present invention is located in the vicinity of the place where the static pressure in the combustion cylinder 2 becomes high and the high-temperature combustion gas in the combustion cylinder 2 is ejected into the cavity. The size of the purge hole in the circumferential direction can be appropriately changed as necessary, for example, by increasing the size of the purge hole to be performed and reducing the size of the purge hole located at other locations.

また、音響ライナー１１，２０，３０，４０，５０，６０，７０，８０は、図２に示すような断面形状を有するものに限定されるものではなく、周方向の一部（図１において上部）を除く燃焼筒２の壁面に、周方向に沿って穿設された多数の孔１１ａと、これら孔１１ａが設けられた領域における燃焼筒２の外周側（燃焼筒２から見て冷却空気領域４に接する側）を取り囲むように配置され、燃焼筒２の壁面との間にキャビティ（共鳴空間）を形成する２つのハウジング１１ｂとを主たる要素として構成されたものであってもよい。
ハウジング１１ｂは、周方向の一部を除く燃焼筒２の外周に取り付けられており、各ハウジング１１ｂの内部に仕切りは設けられておらず、各ハウジング１１ｂの内部は、一体的な空間をなしている。 Further, the acoustic liners 11, 20, 30, 40, 50, 60, 70, 80 are not limited to those having a cross-sectional shape as shown in FIG. ), And a large number of holes 11a drilled along the circumferential direction in the wall surface of the combustion cylinder 2, and the outer peripheral side of the combustion cylinder 2 in the area where these holes 11a are provided (cooling air region when viewed from the combustion cylinder 2) 4 may be configured so as to surround two housings 11b that form a cavity (resonance space) between the combustion cylinder 2 and the wall surface of the combustion cylinder 2.
The housing 11b is attached to the outer periphery of the combustion cylinder 2 excluding a part in the circumferential direction, and no partition is provided inside each housing 11b. The interior of each housing 11b forms an integral space. Yes.

さらに、燃焼筒２の上流側に音響ライナー１１，２０，３０，４０，５０，６０，７０，８０を配置し、この音響ライナー１１，２０，３０，４０，５０，６０，７０，８０とバイパス流路８との間に音響ライナー１１，２０，３０，４０，５０，６０，７０，８０を配置することもできる。
なお、この場合、上流側に配置される音響ライナーの断面形状を図２に示すようなものとし、下流側に配置される音響ライナーの断面形状を上記段落〔００５３〕のようなものとし、上流側と下流側とで音響ライナーの断面形状が異なるようにすることもできる。
また、この場合、上流側に配置される音響ライナーまたは下流側に配置される音響ライナーのいずれか一方のみにパージ孔を設けるようにすることもできる。 Further, an acoustic liner 11, 20, 30, 40, 50, 60, 70, 80 is disposed on the upstream side of the combustion cylinder 2, and this acoustic liner 11, 20, 30, 40, 50, 60, 70, 80 is bypassed. The acoustic liner 11, 20, 30, 40, 50, 60, 70, 80 can be disposed between the flow path 8.
In this case, the cross-sectional shape of the acoustic liner arranged on the upstream side is as shown in FIG. 2, the cross-sectional shape of the acoustic liner arranged on the downstream side is as shown in the above paragraph [0053], and the upstream The cross-sectional shape of the acoustic liner may be different between the side and the downstream side.
In this case, the purge hole may be provided only in either the acoustic liner disposed on the upstream side or the acoustic liner disposed on the downstream side.

さらにまた、第１参考実施形態から第４参考実施形態、および第１実施形態のところで説明したパージ孔は、上流側に設けられる必要はなく、下流側に設けることもできる。 Furthermore, the purge holes described in the first to fourth reference embodiments and the first embodiment need not be provided on the upstream side, and can be provided on the downstream side.

１ガスタービン燃焼器
２燃焼筒
３燃焼領域
１１音響ライナー
１１ａ孔
１１ｂハウジング
１４パージ孔
２０音響ライナー
２１パージ孔
３０音響ライナー
３１パージ孔
４０音響ライナー
４１パージ孔
５０音響ライナー
５１パージ孔
６０音響ライナー
６１パージ孔
７０音響ライナー
７１パージ孔
８０音響ライナー
８１仕切板 DESCRIPTION OF SYMBOLS 1 Gas turbine combustor 2 Combustion cylinder 3 Combustion area | region 11 Acoustic liner 11a Hole 11b Housing 14 Purge hole 20 Acoustic liner 21 Purge hole 30 Acoustic liner 31 Purge hole 40 Acoustic liner 41 Purge hole 50 Acoustic liner 51 Purge hole 60 Acoustic liner 61 Purge Hole 70 Acoustic liner 71 Purge hole 80 Acoustic liner 81 Partition plate

Claims

Arranged so as to surround a large number of holes drilled along the circumferential direction on the wall surface of the combustion cylinder in which a combustion region is formed, and to surround the outer peripheral side of the combustion cylinder in the region where these many holes are drilled And an acoustic liner for a gas turbine combustor comprising a housing in which a resonance space is formed between the combustion cylinder wall surface and
A plurality of purge holes are evenly drilled on both the one side surface and the other side surface of the housing along the circumferential direction and the entire circumference thereof, and the purge hole drilled in the one side surface and the other side surface The purge hole drilled in is arranged so as not to overlap in the circumferential direction ,
The opening area of the purge hole is larger than the opening area of the hole drilled in the wall surface of the combustion cylinder,
An acoustic liner for a gas turbine combustor, wherein air flowing into the resonance space from the purge hole flows along the wall surface of the combustion cylinder to form an air layer in the vicinity of the wall surface of the combustion cylinder. .

A plurality of holes drilled along the circumferential direction on the wall surface excluding a part of the circumferential direction of the combustion cylinder in which a combustion region is formed, and the combustion cylinder in the region where these numerous holes are drilled An acoustic liner for a gas turbine combustor including two housings that are disposed so as to surround the outer peripheral side of the combustion cylinder and in which a resonance space is formed between a wall surface of the combustion cylinder,
A plurality of purge holes are evenly drilled on both the one side surface and the other side surface of the housing along the circumferential direction and the entire circumference thereof, and the purge hole drilled in the one side surface and the other side surface The purge hole drilled in is arranged so as not to overlap in the circumferential direction ,
The opening area of the purge hole is larger than the opening area of the hole drilled in the wall surface of the combustion cylinder,
An acoustic liner for a gas turbine combustor, wherein air flowing into the resonance space from the purge hole flows along the wall surface of the combustion cylinder to form an air layer in the vicinity of the wall surface of the combustion cylinder. .

A large number of holes drilled along the circumferential direction on the wall surface located upstream of the combustion cylinder in which the combustion area is formed, and the outer peripheral side of the combustion cylinder in the area where these many holes are drilled And a housing in which a resonance space is formed between the combustion cylinder and the wall surface of the combustion cylinder,
A large number of holes drilled along the circumferential direction and a large number of these holes are drilled in the wall surface except for a part in the circumferential direction, which is located downstream of the combustion cylinder in which the combustion region is formed. An acoustic liner for a gas turbine combustor including two housings disposed so as to surround an outer peripheral side of the combustion cylinder in a region and forming a resonance space between a wall surface of the combustion cylinder;
A plurality of purge holes are evenly drilled on both the one side surface and the other side surface of the housing along the circumferential direction and the entire circumference thereof, and the purge hole drilled in the one side surface and the other side surface The purge hole drilled in is arranged so as not to overlap in the circumferential direction ,
The opening area of the purge hole is larger than the opening area of the hole drilled in the wall surface of the combustion cylinder,
An acoustic liner for a gas turbine combustor, wherein air flowing into the resonance space from the purge hole flows along the wall surface of the combustion cylinder to form an air layer in the vicinity of the wall surface of the combustion cylinder. .

Arranged so as to surround a large number of holes drilled along the circumferential direction on the wall surface of the combustion cylinder in which a combustion region is formed, and to surround the outer peripheral side of the combustion cylinder in the region where these many holes are drilled And an acoustic liner for a gas turbine combustor comprising a housing in which a resonance space is formed between the combustion cylinder wall surface and
A plurality of purge holes are evenly drilled on both the one side surface and the other side surface of the housing along the circumferential direction and the entire circumference thereof, and the purge hole drilled in the one side surface and the other side surface The purge hole drilled in is arranged so as not to overlap in the circumferential direction,
An acoustic liner for a gas turbine combustor, wherein a partition plate that partitions the resonance space in a circumferential direction is provided inside the housing.

A plurality of holes drilled along the circumferential direction on the wall surface excluding a part of the circumferential direction of the combustion cylinder in which a combustion region is formed, and the combustion cylinder in the region where these numerous holes are drilled An acoustic liner for a gas turbine combustor including two housings that are disposed so as to surround the outer peripheral side of the combustion cylinder and in which a resonance space is formed between a wall surface of the combustion cylinder,
A plurality of purge holes are evenly drilled on both the one side surface and the other side surface of the housing along the circumferential direction and the entire circumference thereof, and the purge hole drilled in the one side surface and the other side surface The purge hole drilled in is arranged so as not to overlap in the circumferential direction,
An acoustic liner for a gas turbine combustor, wherein a partition plate that partitions the resonance space in a circumferential direction is provided inside the housing.

A large number of holes drilled along the circumferential direction on the wall surface located upstream of the combustion cylinder in which the combustion area is formed, and the outer peripheral side of the combustion cylinder in the area where these many holes are drilled And a housing in which a resonance space is formed between the combustion cylinder and the wall surface of the combustion cylinder,
A large number of holes drilled along the circumferential direction and a large number of these holes are drilled in the wall surface except for a part in the circumferential direction, which is located downstream of the combustion cylinder in which the combustion region is formed. An acoustic liner for a gas turbine combustor including two housings disposed so as to surround an outer peripheral side of the combustion cylinder in a region and forming a resonance space between a wall surface of the combustion cylinder;
A plurality of purge holes are evenly drilled on both the one side surface and the other side surface of the housing along the circumferential direction and the entire circumference thereof, and the purge hole drilled in the one side surface and the other side surface The purge hole drilled in is arranged so as not to overlap in the circumferential direction,
In the housing, the features and to Ruga turbines combustor acoustic liner that partition plate partitioning the resonance spaces in the circumferential direction is provided.

Arranged so as to surround a large number of holes drilled along the circumferential direction on the wall surface of the combustion cylinder in which a combustion region is formed, and to surround the outer peripheral side of the combustion cylinder in the region where these many holes are drilled And an acoustic liner for a gas turbine combustor comprising a housing in which a resonance space is formed between the combustion cylinder wall surface and
A plurality of purge holes are evenly drilled on both the one side surface and the other side surface of the housing along the circumferential direction and the entire circumference thereof, and the purge hole drilled in the one side surface and the other side surface The purge hole drilled in is arranged so as not to overlap in the circumferential direction,
The purge hole has characteristics and to Ruga turbines combustor acoustic liner that is a hole of a slit shape having a constant width in the circumferential direction.

A plurality of holes drilled along the circumferential direction on the wall surface excluding a part of the circumferential direction of the combustion cylinder in which a combustion region is formed, and the combustion cylinder in the region where these numerous holes are drilled An acoustic liner for a gas turbine combustor including two housings that are disposed so as to surround the outer peripheral side of the combustion cylinder and in which a resonance space is formed between a wall surface of the combustion cylinder,
A plurality of purge holes are evenly drilled on both the one side surface and the other side surface of the housing along the circumferential direction and the entire circumference thereof, and the purge hole drilled in the one side surface and the other side surface The purge hole drilled in is arranged so as not to overlap in the circumferential direction,
The purge hole has characteristics and to Ruga turbines combustor acoustic liner that is a hole of a slit shape having a constant width in the circumferential direction.

A large number of holes drilled along the circumferential direction on the wall surface located upstream of the combustion cylinder in which the combustion area is formed, and the outer peripheral side of the combustion cylinder in the area where these many holes are drilled And a housing in which a resonance space is formed between the combustion cylinder and the wall surface of the combustion cylinder,
A large number of holes drilled along the circumferential direction and a large number of these holes are drilled in the wall surface except for a part in the circumferential direction, which is located downstream of the combustion cylinder in which the combustion region is formed. An acoustic liner for a gas turbine combustor including two housings disposed so as to surround an outer peripheral side of the combustion cylinder in a region and forming a resonance space between a wall surface of the combustion cylinder;
A plurality of purge holes are evenly drilled on both the one side surface and the other side surface of the housing along the circumferential direction and the entire circumference thereof, and the purge hole drilled in the one side surface and the other side surface The purge hole drilled in is arranged so as not to overlap in the circumferential direction,
The purge hole has characteristics and to Ruga turbines combustor acoustic liner that is a hole of a slit shape having a constant width in the circumferential direction.

A gas turbine combustor comprising the acoustic liner for a gas turbine combustor according to any one of claims 1 to 9 .

A gas turbine comprising the gas turbine combustor according to claim 10 .