JPH04255533A - ガスタービンスペーサディスク用熱シール - Google Patents

ガスタービンスペーサディスク用熱シール

Info

Publication number
JPH04255533A
JPH04255533A JP3265472A JP26547291A JPH04255533A JP H04255533 A JPH04255533 A JP H04255533A JP 3265472 A JP3265472 A JP 3265472A JP 26547291 A JP26547291 A JP 26547291A JP H04255533 A JPH04255533 A JP H04255533A
Authority
JP
Japan
Prior art keywords
spacer disk
groove
sealing
disk
spacer
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.)
Withdrawn
Application number
JP3265472A
Other languages
English (en)
Inventor
Diether Eusebio Carreno
ディーザー・ヨセビオ・カレノ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of JPH04255533A publication Critical patent/JPH04255533A/ja
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/24—Heat or noise insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/44—Free-space packings
    • F16J15/441—Free-space packings with floating ring
    • F16J15/442—Free-space packings with floating ring segmented
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/001—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between stator blade and rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
    • F01D5/066—Connecting means for joining rotor-discs or rotor-elements together, e.g. by a central bolt, by clamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/08—Heating, heat-insulating or cooling means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、ガスタービンにおける
スペーサディスクの外周面に高温ガスが衝突することを
実質的に防止する熱シール機構に関する。
【０００２】
【従来の技術】最新のガスタービンでは、高効率と高出
力が要求される結果として運転温度がかなり高くなって
いる。従って、相異なる材料を用いた複合ロータ構造体
の設計と製造が行われている。また、高温運転に対処す
るために冷却空気をガスタービンの様々な部分、例えば
、高温ガスにさらされる部分に送給する様々な複雑かつ
高価な内部流路が開発されてきた。
【０００３】ガスタービンの高効率高温運転に関する主
な問題は、ロータディスクと、隣合うロータディスク間
に介在するスペーサディスクの不均等な加熱と冷却であ
った。例えば、過渡運転状態中、すなわち、始動時の変
速中と、始動とタービン定格回転速度との間の他の変速
中、タービンディスクの外周部分例えばバケットと、ロ
ータディスクの内部との間にかなりの温度差が生じる。 同様に、スペーサディスクの外側および内側部分間にも
温度差が生じる。このような本質的に半径方向向きの熱
勾配により高い熱応力が発生する結果、諸構成部の有用
寿命が短くなるおそれがある。特にスペーサディスクに
関しては、スペーサディスクの従来の高低密封外周面（
これは補完的な高低表面形状をもつ隣接静止構造体と協
働する）の破損は修理が容易ではなく、費用のかさむロ
ータの分解を要し、またスペーサディスク全体の廃棄す
ら必要になる。
【０００４】
【発明の概要】本発明は、ガスタービンにおけるスペー
サディスクの外周面に高温の段間ガスが衝突することを
実質的に防止する熱シール機構に関し、これにより比較
的低い温度勾配と応力を発生してスペーサディスクの使
用寿命を延ばすとともに、後述のような他の利点をもた
らす。
【０００５】さらに詳述すると、本発明はロータスペー
サディスクの全周に高温用密封部片を着脱自在に取付け
るためのものである。このために、各スペーサディスク
の外周面に（密封用高低表面形状の一部として）形成さ
れた従来の環状溝を、密封部片の補完部分またははめ合
わせ部分を受入れるように設計されたダブテール溝とし
て改造する。換言すると、隣合う環状溝の各溝に複数の
密封部片がはめ込まれ、全体として、スペーサディスク
の外周面に高温ガスが直接衝突することを事実上防止す
るかまたは少なくとも最少にする。
【０００６】本発明の他の特徴として、スペーサディス
クの外周に個別密封部片を利用することは、優れた高低
密封形状の構造的基礎となる。
【０００７】同時に、スペーサディスク自体の損傷のお
それが極めて少なくなる。というのは、密封部片の半径
方向可動性により密封部片は高低面密封機構の静止構成
部との摩擦発生時に半径方向に引っ込むことができるか
らである。密封部片自体に摩耗が生じた場合、部片の取
外しと交換は容易であり、時間のかかる分解は不要であ
る。
【０００８】従って、本発明の一実施態様では、複数の
ダブテール形溝をガスタービンの各スペーサディスクの
外周面に設ける。各溝は複数の密封部片を滑動自在に受
入れる。各部片は関連ダブテール溝表面に対して実質的
に補完的な基部を有する。さらに詳述すると、各密封部
片の基部は平らな底面と、部片の上部に接合する１対の
内向きかつ上向きテ−パ付きの表面とを有し、部片上部
にはほぼ水平の部分が含まれ、それ自体環状周溝を有し
て高低密封表面形状を保つことにより、隣接する静止構
造体の補完的表面形状と協働して、他の点では公知の流
れ抵抗路を画成する。
【０００９】密封部片の下部すなわち基部とダブテール
溝との表面間には間隙があるので、スペーサディスクの
回転中、密封部片はそれにかかる遠心力の結果として半
径方向外向きに押圧され、従って、密封部片の上向きか
つ内向きに傾斜した表面がダブテール溝の対応テ−パ面
と密封係合をなす。この密封係合は、高温段間ガスがス
ペーサディスク外周面のかなりの部分に直接衝突するこ
とを防止する。この第１実施例では、極めてわずかな量
の高温ガスがスペーサディスクの周面の他部に最終的に
接触する可能性がある。これは隣合う溝内の隣合う部片
間に間隙があるからである。しかし、密封部片は、スペ
ーサディスクの面上を横切って軸方向に流れるガスに対
して実質的な熱障壁となる。
【００１０】他の実施態様では、密封部片の上部に水平
方向に延在する非対称フランジが設けられ、これらは隣
合う溝内の隣合う部片の同様なフランジと密封係合をな
すように設計されるので、ほぼ完全な熱障壁が設けられ
、高温段間ガスがスペーサディスクの外周面に直接衝突
することを防止する。
【００１１】さらに別の実施態様では、密封部片の上部
をもう少し複雑な非対称構造となるように形成すること
により、さらに先進的な高低密封表面形状が得られ、こ
の構造によりスペーサディスクの面上を横切って軸方向
に流れるガスに対してかなり曲折度を増した流路が設け
られる。
【００１２】上述の熱封じ機構を設ける結果として次の
利点が得られる。（１）効果的な熱伝達抵抗が生じてロ
ータスペーサディスクを過渡状態中比較的低い温度に保
つので、熱応力が減って使用寿命が長くなる。（２）密
封効果を最適にするように形成された部片の利用により
比較的進んだ高低ラビリンスシールを設けることができ
る。（３）損傷または摩耗したシールを現場で交換でき
るので、運転停止時間が減る。（４）先進的なシール設
計を現場の古い装置に組込んで性能を改善できる。 （５）スペーサディスクの熱応力が比較的低いので、隣
接するタービンディスクとの荷重分担度を高め得る。
【００１３】本発明の他の目的は本発明実施例の以下の
説明から明らかとなろう。
【００１４】
【実施例の記載】添付図面、特に図１と図１Ａと図２に
ガスタービンのロータ構造体１０の一部分の断面を示す
。ガスタービンは通常の圧縮機と燃焼器と外側ケーシン
グと他の補助構造体を含み、これらは当業者に明らかな
ものである。図１に示すように、ロータ構造体１０には
軸１２が含まれ、前側フランジ１４と後ろ側フランジ１
６を有する。軸１２には複数のロータディスクが装着さ
れ、３個のロータディスク、すなわち、前側ディスク１
８と中間ディスク２０と後ろ側ディスク２２を示してあ
る。本発明は別のディスクを有するタービンにも有用で
あることを理解されたい。バケット２４、２６、２８が
ロータ１８、２０、２２の外周にそれぞれ装着されてい
る。スペーサディスク３０が前側ディスク１８と中間デ
ィスク２０との間に配置され、またスペーサディスク３
２が中間ディスク２０と後ろ側ディスク２２との間に配
置されている。１本だけを符号３４で示した複数本のボ
ルトが、軸１２の前端と後端にあるフランジ１４、１６
を貫通してロータディスクとスペーサディスクを相互当
接関係に固定しているので、ロータディスクとスペーサ
ディスクはロータ軸線を中心として一緒に回転する。 前述のロータ構造体は従来のものであり、そしてここに
開示してないが当該技術上ガスタービンロータの作用に
必要なかなりの付加構造体が存在することを認識された
い。
【００１５】図１Ａについて簡単に述べると、従来、ス
ペーサディスク３０’の外周に複数の隣合う環状溝３６
を周知の高低ラビリンスシールの一部として設けること
が実行されてきた。このシールは溝の長さ方向に垂直な
軸方向の漏流を最少にするように設計されている。これ
らの溝は、隣接する静止構成部３１の補完的な突起とと
もに、矢印Ａで示した上記の軸方向漏流に抵抗する曲折
路を画成する。本発明はこうした従来のシール機構をか
なり改良するものであり、従来の高低密封表面形状を維
持するだけでなくスペーサディスク自体のための熱シー
ルも設けるものである。
【００１６】図１を再度参照するとともに図２について
説明すると、本発明の実施例によるスペーサディスク３
０には一連のダブテール溝３８が設けられ、ディスクの
全周に沿って延在する。横方向に相隔たるダブテール溝
３８はそれぞれ、平らな基面４０と、１対の上向きかつ
内向きテーパ付き表面４２とを有し、両テ−パ面４２は
ほぼ平らな周面４４で終わっている。ダブテール溝と密
封部片との構造は、もちろん、ディスク３２にも（また
任意の他のスペーサディスクにも）組込まれるが、これ
らのディスクは溝・シール形状に関しては本質的に同じ
であるから、ここではディスク３０を詳述するだけでよ
い。また、その詳述において、上、下、水平、垂直等の
用語は図２に示したディスク３０の方位に関するものに
過ぎないことを理解されたい。
【００１７】各ダブテール溝３８内には、それとはまり
合うように設計された複数の密封部片４６が滑動自在に
挿入されている。詳述すると、各部片４６には基部４８
が含まれ、平らな底面５０と、内向きかつ上向きにテ−
パを付けた表面５２とを有する。また、各部片４６には
上部５４が含まれ、１対の外向きのほぼ平らな表面５６
と、１対のほぼ垂直に延在する側壁５８と、ほぼ平らな
上面６０とを有する。周溝６２が上面６０に形成され、
部片の一端から他端まで長さ方向に延在することにより
、従来の高低ラビリンスシールの利点が確保される。
【００１８】部片４６は、熱、摩耗および強度特性間の
最適バランスをとった最低価格のものとして選ばれた材
料で製造される。現在好適な一材料は伝導率の低い高温
鋼であるが、上記の基準によって選ばれた他の材料も同
様に有用である。
【００１９】このような部片が複数個各環状溝３８内に
配置され、スペーサディスク３０の全周面に延在する。 単一溝内の隣合う部片間の密封関係を保つために、図３
と図６に示すような突起と係留部とからなる構造を設け
得る。すなわち、一つの部片に設けた突起６４が隣接部
片に設けた関連係留部６６と係合し、もちろん、この係
合は関連ダブテール溝３８の全周にわたって各部片毎に
相次いでなされる。
【００２０】図７を参照するに、各ダブテール溝３８に
ついて、平らな上面４４に整合切除部６８を設けてダブ
テール溝の周囲の少なくとも１箇所において溝内に拡大
開口を形成することができ、これにより密封部片を溝内
に挿入できる。
【００２１】タービンの運転中、部片４６と溝３８間の
所定間隙の結果として、各部片４６がディスク３０の回
転により発生する遠心力によりダブテール溝３８内で半
径方向外方に押される。しかし、部片４６は、ダブテー
ル溝３８内に対称的に配置されているので、タービンロ
ータの回転軸線との同心性を保つ。この半径方向外向き
の荷重を受けた状態の各部片４６の表面５２は、ダブテ
ール溝３８の対応テーパ付き表面４２と係合することに
より両者間の密封をなす。部片４６の半径方向移動量は
少ないが、例えば過大な熱膨張等により隣接静止構成部
（例えば図１Ａの構成部３１）との摩擦が生じた場合（
半径方向の引っ込みによる）幾分の反動を許容するのに
充分である。
【００２２】上述の実施例では、少量の高温ガスが、隣
合う溝３８内の隣合う部片４６間、すなわち、隣合う側
壁５８間を通り得るが、ディスク３０の周面４０、４２
、４４に直接衝突し得る高温ガスの量はかなり少ない。 従って、ディスクの半径方向内側および外側部分間の温
度差が減るので熱応力も減り、その結果ディスクの有用
寿命が長くなる。同時に、摩耗がディスク３０ではなく
部片４６に生じ、そして部片は開口６８を経て容易に交
換されるので、これもまたディスクの有用寿命を延ばす
とともにこのような交換に要する運転停止時間を短くす
る。
【００２３】ディスク３０の回転速度が減るにつれ、部
片４６はダブテール溝３８内に後退するので、部片の表
面５６はディスクの平面４４と係合する。この後退位置
において表面４０、５０間に間隙が存在するかしないか
は選定公差による。
【００２４】図４には図２の実施例におけるダブテール
溝３８と実質的に同等なダブテール溝３８’と密封係合
する密封部片の他の具体例を示す。図４に示した密封部
片７０はそれぞれ平らな底面７２と、上向きかつ内向き
にテ−パを付けた密封表面７４、７６とを有し、両テー
パ面７４、７６はそれぞれ外向きの密封フランジ７８、
８０に続いている。両フランジは部片の上部８２と接続
している。図４からわかるように、フランジ７８、８０
は部片の中心線８４に対して偏心的に配向されている。 例えば、フランジ７８は（図４に示した断面で見ると）
フランジ８０より高い垂直レベルにあり、そしてフラン
ジ７８は部片上部８２からフランジ８０より長く延びて
いる。この構造によれば、フランジ７８と、部片７０の
左側の隣接部片のフランジ８０とが重なり合って密封状
態になる。同様に、部片７０のフランジ８０は同部片の
右にある部片のフランジ７８の下側と密封係合をなす。 従って、スペーサディスク３０の回転中、密封部片の外
向き荷重は、テーパ面７４、７６がダブテール溝のテー
パ面４２と係合する所にシールを生成するだけでなく、
隣合う部片のフランジ７８、８０間にも密封係合を生じ
ることにより、ディスク３０の周面における高温ガスの
直接衝突を皆無にする。
【００２５】図５に先進ラビリンスシールを含む別の密
封部片設計を開示する。図５に示した部片により設けら
れる熱シールは図１と図２に示したものと実質的に同じ
である。しかし、図５では、上面または周面６０’に溝
８６に近接して傾斜歯形突起８４が設けられている。類
似の補完部材を静止構成部３１に設ければ、軸方向ガス
流のための特に曲折した流路が画成される。
【００２６】以上、本発明の最適実施例と考えられるも
のについて説明したが、本発明は開示した実施例に限定
されるものではなく、本発明の範囲内で様々な改変が可
能である。
【図面の簡単な説明】
【図１】図１は本発明により設計したガスタービンの軸
線に沿う縦断面を示す断片断面図である。図１Ａは公知
スペーサディスク形状の部分断面図である。
【図２】図１の一部の拡大詳細図である。
【図３】図２に示した型の密封部片の斜視図である。
【図４】図１に示した型のスペーサディスクであるが、
本発明の第２実施例による密封部片を取付けたスペーサ
ディスクの部分断面図である。
【図５】本発明の第３実施例による密封部片の斜視図で
ある。
【図６】単一溝内の部片が相互に結合される態様を示す
部分側面図である。
【図７】図１に示したスペーサディスクの上部の部分斜
視図で、密封部片をスペーサディスク溝内に導入し得る
ように同溝に設けた開口を示す。
【符号の説明】
１０　　ガスタービンロータ構造体 １８　　前側ロータディスク ２０　　中間ロータディスク ２２　　後ろ側ロータディスク ３０、３２　　スペーサディスク ３８、３８’　　ダブテール溝 ４０　　基面 ４２　　テ−パ面 ４４　　周面 ４６　　密封部片 ４８　　基部 ５０　　底面 ５２　　テ−パ面 ５４　　部片上部 ５６　　平面 ６０、６０’　　上面 ６２　　溝 ６８　　開口 ７０　　密封部片 ７２　　底面 ７４、７６　　テ−パ面 ７８、８０　　フランジ ８２　　部片上部 ８４　　歯形突起 ８６　　溝

Claims (20)

    【特許請求の範囲】
  1. 【請求項１】　　ガスタービンにおける１対のロータデ
    ィスクの間にそれらとともに回転するように装着されそ
    して外周面を有する環状スペーサディスクにおいて、複
    数の横方向に整列する環状溝が前記外周面に形成され、
    そして複数の密封部材が各環状溝内に着脱自在に保持さ
    れ、前記密封部材は高温ガスが前記外周面の少なくとも
    かなりの部分に直接衝突することを防ぐことにより熱シ
    ールを構成するスペーサディスク。
  2. 【請求項２】　　各密封部材は複数の互いに連結された
    部片からなる請求項１記載のスペーサディスク。
  3. 【請求項３】　　前記溝はダブテール溝として形成され
    、各ダブテール溝は実質的に平らな底面と、テーパ付き
    側面と、実質的に平らな上面とを有し、前記上面は前記
    溝の隣合うものの間に延在する、請求項１記載のスペー
    サディスク。
  4. 【請求項４】　　各密封部材は基部を有し、この基部に
    は実質的に平らな底面とテーパ付き側面が含まれ前記溝
    のうちの関連する溝の前記の実質的に平らな底面とテー
    パ付き側面とに比較的緩く係合するようになっており、
    従って前記密封部材は第１および第２位置間を半径方向
    に移動する、請求項３記載のスペーサディスク。
  5. 【請求項５】　　各ダブテール溝に拡大開口を設けて前
    記密封部材を挿入しやすくした請求項３記載のスペーサ
    ディスク。
  6. 【請求項６】　　各密封部材は前記基部と前記密封部材
    の中心線とに対して対称的に配置した上部を含む、請求
    項４記載のスペーサディスク。
  7. 【請求項７】　　各密封部材は前記基部と前記密封部材
    の中心線とに対して非対称的に配置した上部を含む、請
    求項４記載のスペーサディスク。
  8. 【請求項８】　　ガスタービン用スペーサディスクの回
    転軸線に実質的に平行な環状周面を有するディスク本体
    と、前記周面に形成されそして全周に沿って延在する複
    数の実質的に平行な溝と、各溝内に着脱自在に保持され
    た複数の密封部片とからなり、前記周面のほぼ全面が前
    記複数の可動密封部片によって覆われているガスタービ
    ン用スペーサディスク。
  9. 【請求項９】　　前記密封部片はそれぞれ基部と上部と
    を有し、この上部は高低外面形状を有する、請求項８記
    載のスペーサディスク。
  10. 【請求項１０】　　前記基部は前記溝の断面形状に対し
    て実質的に補完的な形状を有する、請求項９記載のスペ
    ーサディスク。
  11. 【請求項１１】　　前記溝は実質的にダブテール形であ
    る請求項１０記載のスペーサディスク。
  12. 【請求項１２】　　前記密封部片は半径方向に引っ込ん
    だ位置と半径方向に出張った位置との間を動き得る請求
    項１１記載のスペーサディスク。
  13. 【請求項１３】　　各部片上部は１対の水平方向向きの
    密封表面と、前記上部内の中央に設けた周溝とを有する
    、請求項９記載のスペーサディスク。
  14. 【請求項１４】　　各上部は傾斜した環状突起と、中央
    にない環状溝とを含む、請求項９記載のスペーサディス
    ク。
  15. 【請求項１５】　　各上部は、相異なるレベルにある１
    対の横方向に延在する密封表面を有し、隣合う溝内の隣
    合う密封部片が重なり合うようになっている、請求項９
    記載のスペーサディスク。
  16. 【請求項１６】　　各上部は、前記部片の中心線に対し
    て非対称の突起を含む、請求項１５記載のスペーサディ
    スク。
  17. 【請求項１７】　　ガスタービンの隣合うロータディス
    ク間に装着するもので、複数の隣合う環状溝を設けた環
    状周面を有するスペーサディスクであって、各溝に、前
    記周面に対する高温ガスの直接衝突を阻止する熱障壁を
    なしかつ前記周面に沿う軸方向ガス流を阻止する着脱自
    在で交換可能な手段を設けたスペーサディスク。
  18. 【請求項１８】　　前記手段を前記溝に滑動自在にはめ
    込んだ請求項１７記載のスペーサディスク。
  19. 【請求項１９】　　前記手段は、前記溝間で重なり合う
    ように配置された表面を有する、請求項１８記載のスペ
    ーサディスク。
  20. 【請求項２０】　　前記手段は前記溝間で向かい合うよ
    うに配置された表面を有する、請求項１８記載のスペー
    サディスク。
JP3265472A 1990-09-28 1991-09-18 ガスタービンスペーサディスク用熱シール Withdrawn JPH04255533A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/589,501 US5080556A (en) 1990-09-28 1990-09-28 Thermal seal for a gas turbine spacer disc
US589,501 1990-09-28

Publications (1)

Publication Number Publication Date
JPH04255533A true JPH04255533A (ja) 1992-09-10

Family

ID=24358277

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3265472A Withdrawn JPH04255533A (ja) 1990-09-28 1991-09-18 ガスタービンスペーサディスク用熱シール

Country Status (6)

Country Link
US (1) US5080556A (ja)
EP (1) EP0482758A1 (ja)
JP (1) JPH04255533A (ja)
KR (1) KR920006620A (ja)
CN (1) CN1060137A (ja)
NO (1) NO913808D0 (ja)

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CN1060137A (zh) 1992-04-08
KR920006620A (ko) 1992-04-27
EP0482758A1 (en) 1992-04-29
NO913808D0 (no) 1991-09-27
US5080556A (en) 1992-01-14

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