JPH0547953Y2 - - Google Patents
Info
- Publication number
- JPH0547953Y2 JPH0547953Y2 JP9945285U JP9945285U JPH0547953Y2 JP H0547953 Y2 JPH0547953 Y2 JP H0547953Y2 JP 9945285 U JP9945285 U JP 9945285U JP 9945285 U JP9945285 U JP 9945285U JP H0547953 Y2 JPH0547953 Y2 JP H0547953Y2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst carrier
- inner cylinder
- combustor inner
- combustor
- axial direction
- 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
- 239000003054 catalyst Substances 0.000 claims description 76
- 239000000463 material Substances 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 13
- 239000000446 fuel Substances 0.000 claims description 11
- 239000000919 ceramic Substances 0.000 claims description 7
- 238000006555 catalytic reaction Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims 1
- 239000011810 insulating material Substances 0.000 description 16
- 238000002485 combustion reaction Methods 0.000 description 14
- 125000006850 spacer group Chemical group 0.000 description 12
- 239000007789 gas Substances 0.000 description 11
- 230000006378 damage Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 238000007084 catalytic combustion reaction Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- -1 vermiyquilite Substances 0.000 description 2
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
Description
【考案の詳細な説明】
［産業上の利用分野］
この考案は、触媒を担持するセラミツク製モノ
リスからなる触媒担体を支持するガスタービン用
触媒担体支持装置に関し、主として、都市部の発
電設備などの動力源として用いられるガスタービ
ンの燃焼器内で燃料を触媒反応により燃焼させて
低NOxの高速ガス流体を発生させる触媒担体を
支持するためのガスタービン用触媒担体支持装置
に関するものである。[Detailed description of the invention] [Industrial application field] This invention relates to a catalyst carrier support device for a gas turbine that supports a catalyst carrier made of a ceramic monolith supporting a catalyst, and is mainly used in power generation facilities in urban areas. The present invention relates to a catalyst carrier support device for a gas turbine for supporting a catalyst carrier that generates a high-speed gas fluid with low NOx by burning fuel through a catalytic reaction in the combustor of a gas turbine used as a power source.
［従来の技術］
一般に、ガスタービンの燃焼器における燃焼は
火炎をともなう火炎燃焼である。ところが、この
火炎燃焼では、その燃焼温度が1200℃程度でも、
局所的には1500℃ないし2000℃前後の温度にな
り、空気中の窒素と酸素とが反応してサーマル
NOxを生じ、これが大気汚染物質の要因となる。[Prior Art] Generally, combustion in a combustor of a gas turbine is flame combustion accompanied by flame. However, in this flame combustion, even if the combustion temperature is around 1200℃,
Local temperatures reach around 1,500℃ to 2,000℃, and nitrogen and oxygen in the air react, causing thermal damage.
It produces NOx, which becomes a factor in air pollutants.
そこで、空気中の窒素と酸素とが反応しないよ
うな1500℃以下の低い温度で燃料をパラジウム系
もしくは白金系等の触媒によつて反応させる低
NOx触媒燃焼（以下、単に触媒燃焼という）式
の燃焼器が提唱されている。この触媒燃焼では、
ガスタービンの運転に必要な燃焼器の出口温度
1200℃で燃料を燃焼させた場合、局所的な温度上
昇がなく、サーマルNOxの排出量を一般の火炎
燃焼より極めて低く抑えることができる。このよ
うな触媒燃焼には触媒を担持する触媒担体が必要
であるが、触媒担体は触媒性能、高温での耐久性
および製造性等の観点から、コージエライトもし
くはムライト等を主成分とする、たとえばハニカ
ム構造のセラミツク製モノリスからなる触媒担体
が採用される。 Therefore, we developed a method to react fuel with a palladium-based or platinum-based catalyst at a low temperature of 1,500℃ or less, where nitrogen and oxygen in the air do not react.
A NOx catalytic combustion (hereinafter simply referred to as catalytic combustion) type combustor has been proposed. In this catalytic combustion,
Combustor outlet temperature required for gas turbine operation
When fuel is burned at 1,200℃, there is no local temperature rise, and thermal NOx emissions can be kept much lower than with regular flame combustion. Such catalytic combustion requires a catalyst carrier to support the catalyst, but from the viewpoint of catalytic performance, high-temperature durability, and manufacturability, catalyst carriers are made of cordierite or mullite as the main component, such as honeycomb. A catalyst support consisting of a structured ceramic monolith is employed.
［考案が解決しようとする問題点］
しかし、一般に、触媒担体は機械的強度が脆弱
であるから、燃焼器内筒に嵌合して支持した場
合、たとえばガスタービンの運転・停止にともな
い燃焼器内の温度が変動し、この際、燃焼器内筒
と触媒担体の熱膨張率が相違するため、これら両
者の間に隙間が生じ、高温、高圧の燃焼ガスによ
り触媒担体が燃焼器内筒内で軸方向や半径方向へ
激しく振動して、破損するという欠点があつた。[Problems to be solved by the invention] However, in general, the mechanical strength of the catalyst carrier is weak, so when it is fitted and supported in the combustor inner cylinder, for example, when the combustor is started or stopped, the combustor At this time, the temperature inside the combustor fluctuates, and at this time, the thermal expansion coefficients of the combustor inner cylinder and the catalyst carrier differ, so a gap is created between the two, and the high temperature and high pressure combustion gas causes the catalyst carrier to move inside the combustor inner cylinder. The disadvantage was that it vibrated violently in the axial and radial directions, causing damage.
この考案は、上記欠点を解消するためになされ
たもので、触媒担体が破損するおそれのないガス
タービン用触媒担体支持装置を提供することを目
的としている。 This invention was made in order to eliminate the above-mentioned drawbacks, and aims to provide a catalyst carrier support device for a gas turbine in which there is no risk of damage to the catalyst carrier.
［問題点を解決するための手段］
上記目的を達成するために、この考案は、燃焼
器内筒と触媒担体との嵌合部に弾性をもつた断熱
材を介挿するとともに上記触媒担体の軸方向両端
面の周縁に緩衝材を配設し、この緩衝材を介して
上記触媒担体を押圧装置によりその軸方向へ押圧
したことを特徴としている。[Means for solving the problems] In order to achieve the above object, this invention is characterized by inserting an elastic insulating material into the mating portion between the combustor inner tube and the catalyst carrier, and arranging a cushioning material on the peripheral edges of both axial end faces of the catalyst carrier, and pressing the catalyst carrier in the axial direction via this cushioning material by a pressing device.
［作用］
この考案によれば、触媒担体の外周に断熱材を
設けて弾性的に支持しているから、燃焼器内の温
度が上昇して燃焼器内筒が半径方向へ膨張して
も、圧縮されていた断熱材が膨張するので、触媒
担体と燃焼器内筒との間に隙間が生ずることがな
く、常に触媒担体を安定してソフトに支持でき
る。[Operation] According to this invention, since a heat insulating material is provided around the outer periphery of the catalyst carrier to support it elastically, even if the temperature inside the combustor rises and the combustor inner cylinder expands in the radial direction, Since the compressed heat insulating material expands, no gap is created between the catalyst carrier and the combustor inner cylinder, and the catalyst carrier can always be supported stably and softly.
また、触媒担体を押圧装置で軸方向へ押圧して
弾性支持するから、燃焼器内筒が軸方向へ膨張し
ても、触媒担体を燃焼器内筒により、常に軸方向
において安定して支持できる。 In addition, since the catalyst carrier is elastically supported by being pressed in the axial direction by a pressing device, even if the combustor inner cylinder expands in the axial direction, the catalyst carrier can always be stably supported in the axial direction by the combustor inner cylinder. .
しかも、燃焼器内筒の軸方向両端面の周縁に緩
衝材を配設し、この緩衝材を介してその両端面を
押圧するから、触媒担体の入口に圧送される気体
の圧力が変動し、触媒担体が燃焼器内筒の軸方向
へ振動しても、触媒担体をソフトに支持できる。 Moreover, since a cushioning material is arranged around the periphery of both axial end surfaces of the combustor inner cylinder, and both end surfaces are pressed through this cushioning material, the pressure of the gas pumped to the inlet of the catalyst carrier fluctuates. Even if the catalyst carrier vibrates in the axial direction of the combustor inner cylinder, the catalyst carrier can be supported softly.
このように、触媒担体をソフトに支持すること
により、触媒担体の破損を有効に防止することが
できる。 By supporting the catalyst carrier in a soft manner in this manner, damage to the catalyst carrier can be effectively prevented.
［実施例］
以下、この考案の実施例を図面にしたがつて説
明する。[Example] Hereinafter, an example of this invention will be described with reference to the drawings.
第１図はこの考案に係るガスタービン用触媒担
体支持装置の縦断面図、第２図は第１図のＡ−Ａ
線断面図、第３図は第１図のＢ−Ｂ線断面図で、
１は触媒担体、２は燃焼器内筒、３は断熱材であ
る。触媒担体１は燃料を触媒反応にようて燃焼さ
せる触媒、たとえばパラジウム系もしくは白金系
の触媒を担持するセラミツク製モノリスからな
る。触媒担体１を構成するセラミツクとしては、
触媒性能、高温での耐久性および製造性の観点か
ら、コージエライトもしくはムライトなどを主成
分とするものが好ましい。モノリスとは、ハニカ
ム構造のような多数の通風孔１ａを構成するもの
で、粉末構造に相対するものを総称し、この実施
例の場合、通風孔１ａの横断面は正方形である。 Fig. 1 is a longitudinal cross-sectional view of a catalyst carrier support device for a gas turbine according to this invention, and Fig. 2 is an A-A in Fig. 1.
Line sectional view, Figure 3 is a BB line sectional view of Figure 1,
1 is a catalyst carrier, 2 is a combustor inner cylinder, and 3 is a heat insulating material. The catalyst carrier 1 is made of a ceramic monolith supporting a catalyst for burning fuel through a catalytic reaction, such as a palladium-based or platinum-based catalyst. The ceramic that constitutes the catalyst carrier 1 is as follows:
From the viewpoints of catalytic performance, durability at high temperatures, and manufacturability, it is preferable to use cordierite, mullite, or the like as a main component. A monolith is a structure having a large number of ventilation holes 1a such as a honeycomb structure, and is a general term for a structure opposite to a powder structure. In the case of this embodiment, the cross section of the ventilation holes 1a is square.
断熱材３は触媒担体１の外周に、円筒状でかつ
半径方向へ圧縮状態で配設され、1000℃以上の高
温に耐え、しかも弾性を有するもので、たとえば
セラミツクフアイバ、バーミユキユライト、石
綿、フエルトメタル等の一種もしくは二種以上か
ら構成される。 The heat insulating material 3 is arranged around the outer periphery of the catalyst carrier 1 in a cylindrical shape and in a compressed state in the radial direction, and is made of a material that can withstand high temperatures of 1000°C or more and is elastic, such as ceramic fiber, vermiyquilite, asbestos, etc. It is composed of one or more types of felt metal, etc.
４は薄板バンドで、断熱材３を触媒担体１の外
周に半径方向へ一時的に圧縮するのに使用される
ものである。５はスペーサで、リツプ溝を有する
ほぼ円筒形状、すなわち円筒の一部が軸方向へ直
線の切欠部５ａを有する形状とされてなる。６は
緩衝材で、触媒担体１の軸方向両端面、つまり気
化燃料の入口端面１ｂと出口端面１ｃの周縁に、
円環状にそれぞれ配設されている。この緩衝材６
は、弾性があり、かつ600℃以上の耐熱性を有す
るもので、たとえばニクロム、SUS310もしくは
SUS316L等のフエルトメタル、セラミツクフア
イバ、NiCrAＹのプラズマコーテイング等の
空隙率の大きなものから構成される。７は緩衝材
６を触媒担体１の軸方向へ押圧して触媒担体１を
弾性支持する押圧装置で、この実施例の場合、ス
ラスト止め８，８とスプリング９とからなる。ス
ラスト止め８は、横断面Ｌ形で、かつ一部が切欠
されて円が切れたほぼ円環形状で、スプリング９
の押圧力を緩衝材６に付与するとともに、その鍔
８ａで触媒担体１が軸方向へ離脱するのを防止す
る。スプリング９は、この実施例の場合、ドーナ
ツ板状の円環を曲成してスプリング構造としたも
のであるが、コイルばねをスラスト止め８の円周
方向に多数配設したもの等で構成しても良い。 A thin plate band 4 is used to temporarily compress the heat insulating material 3 around the outer periphery of the catalyst carrier 1 in the radial direction. Reference numeral 5 denotes a spacer, which has a substantially cylindrical shape with a lip groove, that is, a part of the cylinder has a linear notch 5a in the axial direction. Reference numeral 6 denotes a buffer material, which is provided at the periphery of both axial end faces of the catalyst carrier 1, that is, the inlet end face 1b and the outlet end face 1c of the vaporized fuel.
They are arranged in a ring shape. This buffer material 6
is elastic and has heat resistance of 600℃ or higher, such as nichrome, SUS310 or
It is made of felt metal such as SUS316L, ceramic fiber, NiCrAY plasma coating, etc. with high porosity. Reference numeral 7 denotes a pressing device for elastically supporting the catalyst carrier 1 by pressing the buffer material 6 in the axial direction of the catalyst carrier 1, and in the case of this embodiment, it is composed of thrust stops 8, 8 and a spring 9. The thrust stopper 8 has an L-shaped cross section and is approximately annular in shape with a part cut out.
A pressing force of 1 is applied to the buffer material 6, and the collar 8a prevents the catalyst carrier 1 from detaching in the axial direction. In this embodiment, the spring 9 has a spring structure formed by bending a donut plate-shaped ring, but it may also be constructed of a large number of coil springs arranged in the circumferential direction of the thrust stop 8. It's okay.
燃焼器内筒２は両端に鍔２ａ，２ａを有し、こ
の実施例の場合、２つに分割された分割片２ｂ，
２ｂを掌合してなり、この分割片２ｂが分割面に
それぞれ多数のフランジ２ｃを有し、このフラン
ジ２ｃに、燃焼器内筒２の組立ボルト（図外）の
挿通する透孔２ｄが穿設されている。燃焼器内筒
２は、上記分割片２ｂ，２ｂの掌合すなわち組立
により、スペーサ５を内方に収縮させて、つまり
切欠部５ａの切欠巾Ｄを狭くせしめて、同時に断
熱材３を圧縮するものである。 The combustor inner cylinder 2 has flanges 2a, 2a at both ends, and in the case of this embodiment, it has two divided pieces 2b,
The divided pieces 2b each have a large number of flanges 2c on the divided surfaces, and each flange 2c is provided with a through hole 2d through which an assembly bolt (not shown) of the combustor inner cylinder 2 is inserted. It is set up. The combustor inner cylinder 2 shrinks the spacer 5 inward, that is, narrows the notch width D of the notch 5a, and compresses the heat insulating material 3 at the same time by assembling the divided pieces 2b and 2b. It is something.
１０はめねじ１１に螺着する六角穴付止ねじで
燃焼器内筒２もしくは触媒担体１等の軸方向にお
ける寸法の製作誤差を許容するとともに、スプリ
ング９に必要な押圧力を付勢するものである。 10 is a set screw with a hexagonal socket screwed into the female thread 11, which allows for manufacturing errors in the dimensions of the combustor inner cylinder 2 or the catalyst carrier 1 in the axial direction, and also biases the spring 9 with the necessary pressing force. be.
なお、上記構成において、薄板バンド４、スペ
ーサ５、スラスト止め８、および止ねじ１０は、
700℃以上の耐熱性および高強度を有する材質か
らなり、たとえばハステロイＸもしくはSUS310
等の耐熱材料が採用される。 In the above configuration, the thin plate band 4, spacer 5, thrust stopper 8, and set screw 10 are as follows:
Made of materials with heat resistance of 700℃ or higher and high strength, such as Hastelloy X or SUS310.
Heat-resistant materials such as
つぎに上記構成の組立方法を説明する。 Next, a method of assembling the above structure will be explained.
まず、断熱材３を触媒担体１の周囲を巻回しつ
いで薄板バンド４で断熱材３を締めつける。一
方、スペーサ５を所要の治具でその切欠部５ａを
押し開いて、上記触媒担体１と断熱材３と薄板バ
ンド４とをスペーサ５内に挿通した後、上記治具
を取り外すと、断熱材３はスペーサ５によりやや
圧縮された状態になる。この際、スペーサ５に切
欠部５ａを設け、かつこの切欠部５ａ押し開い
て、さらに薄板バンド４が介挿するから、上記挿
通作業が容易である。その後、緩衝材６，６を触
媒担体１の両端面１ｂ，１ｃ周縁にて貼着し、さ
らに上記スペーサ５と同様にして、スラスト止め
８，８を被装する。このように、これらを一体に
した後スラスト止め８の一端にスプリング９を配
設して、分割片２ｂ，２ｃをこれらの外方より被
装して、フランジ２ｃを組立ボルトで接合する。
この接合とともに、スペーサ５の切欠巾Ｄは狭く
なり、同時に断熱材３が半径方向に圧縮される。
この組立後、止ねじ１０をめねじ１１に螺着し
て、スプリング９に必要な押圧力を付与する。 First, the heat insulating material 3 is wound around the catalyst carrier 1, and then the heat insulating material 3 is tightened with a thin plate band 4. On the other hand, after pushing open the notch 5a of the spacer 5 with a necessary jig and inserting the catalyst carrier 1, the heat insulating material 3, and the thin plate band 4 into the spacer 5, when the jig is removed, the heat insulating material 3 is in a slightly compressed state due to the spacer 5. At this time, the spacer 5 is provided with a notch 5a, the notch 5a is pushed open, and the thin plate band 4 is further inserted, so that the above-mentioned insertion operation is easy. Thereafter, cushioning materials 6, 6 are attached to the peripheries of both end surfaces 1b, 1c of the catalyst carrier 1, and thrust stops 8, 8 are further covered in the same manner as the spacer 5 described above. After these are integrated in this manner, a spring 9 is disposed at one end of the thrust stop 8, the divided pieces 2b and 2c are covered from the outside, and the flange 2c is joined with assembly bolts.
Along with this joining, the notch width D of the spacer 5 becomes narrower, and at the same time, the heat insulating material 3 is compressed in the radial direction.
After this assembly, the set screw 10 is screwed into the female thread 11 to apply the necessary pressing force to the spring 9.
第４図は、上記構成の燃焼器内筒２等が内装さ
れるガスタービン用燃焼器を示すものである。こ
の図において、１２は外筒、１３，１３Ａは燃料
噴射弁、１４は点火栓、１５はスワーラ、１６は
ライナ、１７はノツクピン、１８はソケツト、１
９はキヤツプ、２０はノツクピン１７の押圧力で
燃焼器内筒２が座屈しないように設けられた補強
板である。 FIG. 4 shows a gas turbine combustor in which the combustor inner cylinder 2 and the like configured as described above are installed. In this figure, 12 is an outer cylinder, 13 and 13A are fuel injection valves, 14 is a spark plug, 15 is a swirler, 16 is a liner, 17 is a knock pin, 18 is a socket, 1
9 is a cap, and 20 is a reinforcing plate provided to prevent the combustor inner cylinder 2 from buckling due to the pressing force of the knock pin 17.
なお、ノツクピン１７等は、この実施例の場
合、燃焼器内筒２の円周上に４ケ所設けられてい
る。 In this embodiment, the knock pins 17 and the like are provided at four locations on the circumference of the combustor inner cylinder 2.
つぎに燃焼器の燃焼について説明する。 Next, combustion in the combustor will be explained.
加熱空気が、燃焼器内筒２と外筒１２との間を
矢印Ａ方向に流れて、スワーラ１５から流入す
る。この加熱空気は、燃料噴射弁１３から噴射さ
れる燃料と混合して、点火栓１４により着火され
て、ライナ１６内で一次燃焼する。この一次燃焼
風は、燃料噴射弁１３Ａから噴射される燃料と混
合し、400℃程度で、燃焼器内筒２内に流入し、
触媒担体１内を通過する際に、触媒燃焼して1200
℃程度の二次燃焼風となり、燃焼器内筒１２から
タービン（図外）へ導入される。 Heated air flows between the combustor inner cylinder 2 and the outer cylinder 12 in the direction of arrow A, and enters from the swirler 15 . This heated air mixes with fuel injected from the fuel injection valve 13, is ignited by the spark plug 14, and undergoes primary combustion within the liner 16. This primary combustion air mixes with the fuel injected from the fuel injection valve 13A, and flows into the combustor inner cylinder 2 at a temperature of about 400°C.
When passing through the catalyst carrier 1, the catalyst burns and generates 1200
It becomes secondary combustion wind of about 0.degree. C. and is introduced from the combustor inner cylinder 12 to the turbine (not shown).
この二次燃焼風は、上記加熱空気と多少の熱交
換を行なうが、触媒担体１と燃焼器内筒２との間
に断熱材３を設けたので、二次燃焼風の触媒担体
１の半径方向に生ずる温度勾配が小さくできる。 This secondary combustion air exchanges some heat with the heated air, but since the heat insulating material 3 is provided between the catalyst carrier 1 and the combustor inner cylinder 2, the radius of the catalyst carrier 1 of the secondary combustion air is The temperature gradient that occurs in this direction can be reduced.
また、燃焼器内筒２は、二次燃焼風により加熱
されて半径方向へ膨張する。これに対し、燃焼器
内筒２により収縮されていたスペーサ５は、その
切欠部５ａが拡大して燃焼器内筒２の膨張に追従
して径大になる。さらに断熱材３は、上記したよ
うに、圧縮されていたので、スペーサ５の伸びに
追従して、すなわち燃焼器内筒２の膨張に追従し
て膨張するから、セラミツク製の触媒担体１でも
触媒担体１の外周等に不要な隙間を生ずることが
なく常に触媒担体１を半径方向へ安定してソフト
に支持できる。 Moreover, the combustor inner cylinder 2 is heated by the secondary combustion wind and expands in the radial direction. On the other hand, the spacer 5, which has been contracted by the combustor inner cylinder 2, expands in its notch 5a and increases in diameter following the expansion of the combustor inner cylinder 2. Furthermore, since the heat insulating material 3 has been compressed as described above, it expands following the expansion of the spacer 5, that is, following the expansion of the combustor inner cylinder 2. The catalyst carrier 1 can always be stably and softly supported in the radial direction without creating unnecessary gaps around the outer periphery of the carrier 1.
また、燃焼器内筒２は、二次燃焼風により加熱
されて軸方向へも膨張する。これに対し、スラス
ト止め８とスプリング９とからなる押圧装置７で
触媒担体１を軸方向へ押圧しているから、すなわ
ちスプリング９が収縮して触媒担体１を押圧して
いるので、スプリング９が伸びて燃焼器内筒２の
膨張に追従する。しかし、触媒担体１は軸方向へ
も燃焼器内筒２により安定して支持される。 Moreover, the combustor inner cylinder 2 is heated by the secondary combustion wind and expands in the axial direction as well. On the other hand, since the catalyst carrier 1 is pressed in the axial direction by the pressing device 7 consisting of the thrust stop 8 and the spring 9, that is, the spring 9 contracts and presses the catalyst carrier 1. It expands and follows the expansion of the combustor inner cylinder 2. However, the catalyst carrier 1 is stably supported by the combustor inner cylinder 2 also in the axial direction.
さらに、触媒担体１の入口に圧送される一次燃
焼風は、圧力が変動して、触媒担体１が燃焼器内
筒２内で軸方向へ振動する。これに対し、触媒担
体１の軸方向の両端面１ｂ，１ｃの周縁に緩衝材
６を配設しこの緩衝材６を介してその両端面１
ｂ，１ｃを押圧するから、触媒担体１が軸方向へ
振動しても触媒担体１をソフトに支持できる。 Furthermore, the pressure of the primary combustion air forced into the inlet of the catalyst carrier 1 fluctuates, causing the catalyst carrier 1 to vibrate in the axial direction within the combustor inner cylinder 2. On the other hand, a buffer material 6 is disposed around the periphery of both end surfaces 1b and 1c in the axial direction of the catalyst carrier 1, and the both end surfaces 1b and 1c are provided through the buffer material 6.
Since b and 1c are pressed, the catalyst carrier 1 can be supported softly even if the catalyst carrier 1 vibrates in the axial direction.
このように、触媒担体１をソフトに支持するこ
とにより、触媒担体１の破損を有効に防止でき
る。 By supporting the catalyst carrier 1 in a soft manner in this manner, damage to the catalyst carrier 1 can be effectively prevented.
しかも、燃焼器内筒２を分割片２ｂ，２ｂから
構成するとともに、フランジ２ｃを設けて組立ボ
ルトで組立・分解自在としたから、触媒担体１の
交換が容易にできるとともに、スペーサ５をすな
わち断熱材３を容易に圧縮できる。 Moreover, since the combustor inner cylinder 2 is composed of the divided pieces 2b and 2b, and the flange 2c is provided so that it can be assembled and disassembled with assembly bolts, the catalyst carrier 1 can be easily replaced, and the spacer 5 can be Material 3 can be easily compressed.
［考案の効果］
以上説明したように、この考案によれば、弾性
をもつた断熱材が、燃焼器内筒の半径方向への膨
張に追従して膨張するから、触媒担体と燃焼器内
筒との間に隙間が生ずることなく、常に触媒担体
を安定してソフトに支持できる。また、押圧装置
が緩衝材を介して触媒担体を軸方向へ押圧して弾
性支持するから、触媒担体を軸方向へも常に安定
してソフトに支持できる。このように触媒担体を
安定してソフトに支持できるので、触媒担体の破
損を有効に防止することができる。[Effects of the invention] As explained above, according to this invention, since the elastic heat insulating material expands following the expansion of the combustor inner cylinder in the radial direction, the catalyst carrier and the combustor inner cylinder The catalyst carrier can always be stably and softly supported without creating any gaps between the catalyst carrier and the catalyst carrier. Further, since the pressing device presses the catalyst carrier in the axial direction through the cushioning material to elastically support the catalyst carrier, the catalyst carrier can always be stably and softly supported in the axial direction. Since the catalyst carrier can be stably and softly supported in this way, damage to the catalyst carrier can be effectively prevented.
第１図はこの考案の一実施例にかかるガスター
ビン用触媒担体支持装置の縦断面図、第２図は第
１図のＡ−Ａ線断面図、第３図は第１図のＢ−Ｂ
線断面図、第４図は燃焼器の縦断面図である。
１……触媒担体、１ｂ，１ｃ……両端面、２…
…燃焼器内筒、３……断熱材、６……緩衝材、７
……押圧装置。
FIG. 1 is a longitudinal cross-sectional view of a gas turbine catalyst carrier support device according to an embodiment of the invention, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 3 is a cross-sectional view taken along line B-B in FIG.
A line sectional view, and FIG. 4 is a longitudinal sectional view of the combustor. 1... Catalyst carrier, 1b, 1c... Both end surfaces, 2...
...Combustor inner cylinder, 3...Insulating material, 6...Buffer material, 7
...pressing device.
Claims (1)
せるセラミツク製モノリスからなる触媒担体を燃
焼器内筒に嵌合し、上記燃焼器内筒と上記触媒担
体との嵌合部に弾性をもつた断熱材を介挿すると
ともに上記触媒担体の軸方向両端面の周縁に緩衝
材を配設し、この緩衝材を介して上記触媒担体を
押圧装置によりその軸方向へ押圧したことを特徴
とするガスタービン用触媒担体支持装置。 A catalyst carrier made of a ceramic monolith that burns fuel mixed with air through a catalytic reaction is fitted into the combustor inner cylinder, and elastic heat insulation is provided at the fitting part between the combustor inner cylinder and the catalyst carrier. A gas turbine characterized in that a buffer material is inserted at the periphery of both end faces of the catalyst carrier in the axial direction, and the catalyst carrier is pressed in the axial direction by a pressing device through the buffer material. Catalyst carrier support device for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9945285U JPH0547953Y2 (en) | 1985-06-28 | 1985-06-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9945285U JPH0547953Y2 (en) | 1985-06-28 | 1985-06-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS628559U JPS628559U (en) | 1987-01-19 |
| JPH0547953Y2 true JPH0547953Y2 (en) | 1993-12-17 |
Family
ID=30968340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9945285U Expired - Lifetime JPH0547953Y2 (en) | 1985-06-28 | 1985-06-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0547953Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2013099583A1 (en) * | 2011-12-27 | 2015-04-30 | 川崎重工業株式会社 | Catalytic combustors in gas turbine engines. |
-
1985
- 1985-06-28 JP JP9945285U patent/JPH0547953Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS628559U (en) | 1987-01-19 |
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