JP2019518176A - ガス軸受アセンブリ用の流体充填ダンパー - Google Patents
ガス軸受アセンブリ用の流体充填ダンパー Download PDFInfo
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Classifications
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- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
- F01D25/162—Bearing supports
- F01D25/164—Flexible supports; Vibration damping means associated with the bearing
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
- F16C17/03—Sliding-contact bearings for exclusively rotary movement for radial load only with tiltably-supported segments, e.g. Michell bearings
- F16C17/035—Sliding-contact bearings for exclusively rotary movement for radial load only with tiltably-supported segments, e.g. Michell bearings the segments being integrally formed with, or rigidly fixed to, a support-element
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/02—Sliding-contact bearings
- F16C25/04—Sliding-contact bearings self-adjusting
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/02—Sliding-contact bearings
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
- F16C32/0614—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings
- F16C32/0622—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings via nozzles, restrictors
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/0237—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means involving squeeze-film damping
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/50—Bearings
- F05D2240/53—Hydrodynamic or hydrostatic bearings
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/23—Gas turbine engines
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/04—Fluids
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/001—Specific functional characteristics in numerical form or in the form of equations
- F16F2228/005—Material properties, e.g. moduli
- F16F2228/008—Material properties, e.g. moduli of semi-solids or fluids, e.g. viscosity
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/10—Enclosure elements, e.g. for protection
- F16F2230/105—Flexible, e.g. bellows or bladder
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid Mechanics (AREA)
- Support Of The Bearing (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Description
12 長手方向軸、長手方向中心線
14 ファン部
16 コアタービンエンジン
18 外側ケーシング
20 環状入口
22 LP圧縮機
24 HP圧縮機
26 燃焼部
28 HPタービン
30 LPタービン
32 ジェット排気ノズル部
34 スプール、HPシャフト
36 スプール、LPシャフト
37 コア空気流路
38 可変ピッチファン
40 ファンブレード
42 ディスク
44 ピッチ変更機構
46 動力ギヤボックス
48 フロントハブ
50 ナセル
52 出口ガイドベーン
54 下流部
56 バイパス空気流路
58 空気
60 入口
62 空気の第1の部分
64 空気の第2の部分
66 燃焼ガス
68 HPタービンステータベーン
70 HPタービンロータブレード
72 LPタービンステータベーン
74 LPタービンロータブレード
76 ファンノズル排気部
78 高温ガス経路
100 ガス潤滑軸受アセンブリ、空気軸受アセンブリ
102 中心軸
104 軸方向開口部
106 軸受パッド
108 内面
110 軸受ハウジング
112 ガス入口
114 供給チャネル
116 カラム
118 中心
120 ガス分配孔
122 軸受部、部分
124 第1の流体ダンパーキャビティ
126 第2の流体ダンパーキャビティ
128 外壁
130 内壁
132 外周
134 本体
136 半剛性部分
138 剛性部分
140 半剛性部分
142 内側チャネル
144 外側環状チャネル、環状制限チャネル
146 ダンパーキャビティ供給部
150 クリアランスギャップ
152 ダンパー流体
156 蓄積部品
158 充填孔
160 充填孔
200 タービンノズル
202 ガイドベーン
204 外側リング
250 ダンパー流体充填システム
252 入口配管
254 出口配管
256 入口バルブ
258 出口バルブ
260 真空ポンプ
262 ダンパー流体リザーバ
Claims (20)
- ガスタービンエンジン用の軸受アセンブリ(100)であって、前記軸受アセンブリ(100)は、
回転部品(148)を支持するための軸受パッド(106)と、
前記軸受パッド(106)に取り付けられた、または前記軸受パッド(106)と一体に形成された軸受ハウジング(110)と、を含み、前記軸受ハウジング(110)は、
前記軸受パッド(106)に隣接して配置された第1の流体ダンパーキャビティ(124)と、
前記第1の流体ダンパーキャビティ(124)から離間し、クリアランスギャップ(150)として構成された制限チャネル(144)を介して前記第1の流体ダンパーキャビティ(124)と制限的に流体連通する第2の流体ダンパーキャビティ(126)と、
前記第1および第2の流体ダンパーキャビティ(124,126)内に構成されたダンパー流体(152)と、を含み、前記軸受ハウジング(110)は、前記軸受パッド(106)に作用する力に応答して、前記ダンパー流体(152)を前記第1の流体ダンパーキャビティ(124)から前記第2の流体ダンパーキャビティ(126)に前記制限チャネル(144)を介して移送するように構成される、軸受アセンブリ(100)。 - 前記第1および第2の流体ダンパーキャビティ(124,126)および前記制限チャネル(144)は、共に封止され、一定の容積を共に画定する、請求項1に記載の軸受アセンブリ(100)。
- 前記ダンパー流体(152)は、華氏100度ごとに10%未満だけ温度と共に減少する粘度を含む流体を含む、請求項1に記載の軸受アセンブリ(100)。
- 前記ダンパー流体(152)は液体金属を含む、請求項3に記載の軸受アセンブリ(100)。
- 前記液体金属は、ガリウムベースの液体金属を含む、請求項4に記載の軸受アセンブリ(100)。
- 前記ガリウムベースの液体金属はガリウムインジウム合金を含む、請求項5に記載の軸受アセンブリ(100)。
- 前記ダンパー流体(152)の熱膨張係数は、前記軸受ハウジング(110)の熱膨張係数のプラスまたはマイナス約20%の値にほぼ等しい、請求項1に記載の軸受アセンブリ(100)。
- 前記ダンパー流体(152)の前記熱膨張係数と前記軸受ハウジング(110)の前記熱膨張係数との不一致に起因する余分なダンパー流体(152)を吸収するように構成された蓄積部品(156)をさらに含む、請求項7に記載の軸受アセンブリ(100)。
- 前記蓄積部品(156)は前記軸受ハウジング(110)に取り付けられている、請求項8に記載の軸受アセンブリ(100)。
- 前記第1および第2の流体ダンパーキャビティ(124,126)の各々は、前記第1および第2の流体ダンパーキャビティ(124,126)をそれぞれ充填することを可能にするための充填孔(158,160)を含む、請求項1に記載の軸受アセンブリ(100)。
- 前記軸受アセンブリ(100)は半径方向を規定し、前記第1の流体ダンパーキャビティ(124)は、前記半径方向に沿って前記第2の流体ダンパーキャビティ(126)から離間されている、請求項1に記載の軸受アセンブリ(100)。
- 前記軸受ハウジング(110)は、半剛性部分および剛性部分を含む第1の壁を含み、前記第1の壁の前記半剛性部分は前記第1の流体ダンパーキャビティ(124)を少なくとも部分的に画定し、前記第1の壁の前記剛性部分は前記第2の流体ダンパーキャビティ(126)を少なくとも部分的に画定する、請求項1に記載の軸受アセンブリ(100)。
- 前記軸受ハウジング(110)は、半剛性部分を含む第2の壁をさらに含み、前記第2の壁の前記半剛性部分は、前記第2の流体ダンパーキャビティ(126)を少なくとも部分的に画定する、請求項12に記載の軸受アセンブリ(100)。
- 前記軸受ハウジング(110)は、前記軸受パッド(106)に空気流を提供し、前記軸受パッド(106)を完全に支持するために、前記軸受パッド(106)に向かって延在する半剛性のカラム(116)を含む、請求項1に記載の軸受アセンブリ(100)。
- ガスタービンエンジンのガス潤滑軸受アセンブリ(100)に減衰を提供するための方法(300)であって、前記軸受アセンブリ(100)は、回転部品(148)を支持するための軸受パッド(106)と、前記軸受パッド(106)に取り付けられた、または前記軸受パッド(106)と一体に形成された軸受ハウジング(110)と、を有し、前記方法(300)は、
前記軸受パッド(106)に隣接して配置された前記軸受ハウジング(110)の第1の流体ダンパーキャビティ(124)にダンパー流体(152)を充填するステップ(302)と、
前記第1の流体ダンパーキャビティ(124)から離間した前記軸受ハウジング(110)の第2の流体ダンパーキャビティ(126)に前記ダンパー流体(152)を充填するステップ(304)であって、前記第2の流体ダンパーキャビティ(126)は、制限チャネル(144)を介して前記第1の流体ダンパーキャビティ(124)と制限的に流体連通する、ステップ(304)と、
前記ダンパー流体(152)が前記軸受パッド(106)に作用する力に応答して前記制限チャネル(144)を介して前記第1の流体ダンパーキャビティ(124)と前記第2の流体ダンパーキャビティ(126)との間を流れることを可能にするステップ(306)であって、前記ダンパー流体(152)の前記流れは、前記ガス潤滑軸受アセンブリ(100)に減衰を提供する、ステップ(306)と、を含む方法(300)。 - 前記ガス潤滑軸受アセンブリ(100)の前記減衰を、前記軸受パッド(106)の単位直線変位当たりの前記ダンパー流体(152)の体積変位、前記制限チャネル(144)のサイズ、および前記ダンパー流体(152)の粘度のうちの少なくとも1つの関数として制御するステップをさらに含む、請求項15に記載の方法(300)。
- 前記軸受ハウジング(110)の前記第1の流体ダンパーキャビティ(124)に充填し、前記軸受ハウジング(110)の前記第2の流体ダンパーキャビティ(126)に充填するステップは、
前記第1のダンパーキャビティ(124)に前記ダンパー流体(152)を充填するステップと、
前記ダンパー流体(152)が、充填された前記第1の流体ダンパーキャビティ(124)から前記制限チャネル(144)を介して前記第2の流体ダンパーキャビティ(126)に流れることを可能にするステップと、をさらに含む、請求項15に記載の方法(300)。 - 入口配管と、出口配管と、1つまたは複数のバルブと、真空ポンプと、前記第1および第2のダンパーキャビティ(124,126)に充填するためのダンパー流体(152)リザーバと、を有するダンパー流体(152)充填システムを提供するステップと、
前記入口配管を前記第1のダンパーキャビティ(124)の充填孔(158)と共に配置するステップと、
前記出口配管を前記第2のダンパーキャビティ(126)の充填孔(160)と共に配置するステップと、
前記入口配管を介して前記第1のダンパーキャビティ(124)に前記ダンパー流体(152)を充填するステップと、
前記ダンパー流体(152)が、充填された前記第1の流体ダンパーキャビティ(124)から前記制限チャネル(144)を介して前記第2の流体ダンパーキャビティ(126)に流れることを可能にするステップと、
前記第1および第2のキャビティが充填されると、前記入口配管および前記出口配管を除去し、前記第1および第2の流体ダンパーキャビティ(124,126)の前記充填孔(158,160)にキャップをするステップと、をさらに含む、請求項17に記載の方法(300)。 - 前記第1の流体ダンパーキャビティ(126)を充填するステップの前に、前記第1および第2の流体ダンパーキャビティ(124,126)内の圧力を低下させるように、前記第1および第2の流体ダンパーキャビティ(124,126)内から空気を前記真空ポンプによって排気するステップをさらに含む、請求項18に記載の方法(300)。
- 前記入口配管に少なくとも1つのバルブと、前記出口配管に少なくとも1つのバルブと、を設けるステップと、
前記入口配管および前記入口配管バルブを前記ダンパー流体(152)リザーバと共に配置するステップと、
前記出口配管および前記出口配管バルブを前記真空ポンプと共に配置するステップと、
排気中に前記入口配管バルブを閉じ、前記出口配管バルブを開くステップと、
充填中に前記入口配管バルブおよび前記出口配管バルブを開くステップと、をさらに含む、請求項19に記載の方法(300)。
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