JP2003139134A - Squeeze film damper bearing - Google Patents
Squeeze film damper bearingInfo
- Publication number
- JP2003139134A JP2003139134A JP2001340108A JP2001340108A JP2003139134A JP 2003139134 A JP2003139134 A JP 2003139134A JP 2001340108 A JP2001340108 A JP 2001340108A JP 2001340108 A JP2001340108 A JP 2001340108A JP 2003139134 A JP2003139134 A JP 2003139134A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- bearing
- temperature
- squeeze film
- film damper
- 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.)
- Pending
Links
Classifications
-
- 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
- F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
- F16C27/045—Ball or roller bearings, e.g. with resilient rolling bodies with a fluid film, e.g. 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- 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
- F16C2360/24—Turbochargers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、回転軸を支持する
スクィーズフィルムダンパ軸受に係る。特に液体の供給
構造に特徴のあるスクィーズフィルムダンパ軸受に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a squeeze film damper bearing that supports a rotating shaft. In particular, it relates to a squeeze film damper bearing having a characteristic liquid supply structure.
【０００２】[0002]
【従来の技術】スクィーズフィルムダンパ軸受は、回転
軸を支持する軸受の外周固定面と軸受ケーシングの内周
固定面の間に流体面を形成して、この流体膜圧力により
軸受を支持する方式の軸受である。スクィーズフィルム
ダンパ軸受は、特に高速回転をして振動の発生する恐れ
のある回転軸の支持に使用される。例えば、ターボチャ
ージャーの回転軸の支持に用いられる。2. Description of the Related Art A squeeze film damper bearing is of a type in which a fluid surface is formed between an outer peripheral fixed surface of a bearing supporting a rotating shaft and an inner peripheral fixed surface of a bearing casing, and the bearing is supported by the fluid film pressure. It is a bearing. The squeeze film damper bearing is used for supporting a rotating shaft which may rotate at a particularly high speed and generate vibration. For example, it is used to support the rotating shaft of a turbocharger.
【０００３】従来のスクィーズフィルムダンパ軸受の構
造を、説明する。図２は、従来のスクィーズフィルムダ
ンパ軸受の側面断面図である。従来のスクィーズフィル
ムダンパ軸受２は、回転軸１を支持するものであり、軸
受１０と軸受ケーシング２０と一対のシール部材３０と
液体供給手段４０とで構成される。The structure of a conventional squeeze film damper bearing will be described. FIG. 2 is a side sectional view of a conventional squeeze film damper bearing. The conventional squeeze film damper bearing 2 supports the rotating shaft 1, and is composed of a bearing 10, a bearing casing 20, a pair of seal members 30, and a liquid supply means 40.
【０００４】回転軸１は、円筒形状の軸であり、通常高
速回転をする。軸受１０は、回転軸の外周を回転自在に
支持する軸受であり、軸受要素１１とダンパ内輪１２と
で構成される。軸受要素１１は、回転軸１の外周に接し
て、回転自在に支持するものであり、例えば、ころがり
軸受やジャーナル軸受である。ダンパ内輪１２は軸受要
素の外周に外ばめされた金属輪である。軸受要素１１が
ジャーナル軸受である場合は、軸受１０は、軸受要素１
１とダンパ内輪１２とに分離されず、一体の金属輪であ
ることもある。The rotating shaft 1 is a cylindrical shaft and usually rotates at high speed. The bearing 10 is a bearing that rotatably supports the outer circumference of the rotating shaft, and is composed of a bearing element 11 and a damper inner ring 12. The bearing element 11 is in contact with the outer periphery of the rotary shaft 1 and rotatably supports it, and is, for example, a rolling bearing or a journal bearing. The damper inner ring 12 is a metal ring that is fitted onto the outer periphery of the bearing element. When the bearing element 11 is a journal bearing, the bearing 10 is the bearing element 1
It may be an integral metal ring that is not separated into 1 and the damper inner ring 12.
【０００５】軸受ケーシング２０は、前記軸受１０の外
周固定面をわずかな隙間を介して囲う内周固定面を有す
るケーシング（以下、軸受ケーシング本体１１とい
う。）である。わずかな隙間とは、液体（例えば、オイ
ル）のばね効果と減衰効果を奏させるのに必要な寸法で
あり、例えば、０．１〜０．２ｍｍである。軸受ケーシ
ング本体１１の内周固定面には周方向に液体溝２２が形
成される。液体供給孔２３が軸受ケーシング本体１１を
貫通して、外側と液体溝２２とを連通する。The bearing casing 20 is a casing (hereinafter referred to as the bearing casing body 11) having an inner peripheral fixing surface surrounding the outer peripheral fixing surface of the bearing 10 with a slight gap. The slight gap is a dimension necessary for producing the spring effect and the damping effect of the liquid (for example, oil), and is, for example, 0.1 to 0.2 mm. A liquid groove 22 is formed in the circumferential direction on the inner peripheral fixed surface of the bearing casing body 11. The liquid supply hole 23 penetrates the bearing casing body 11 to connect the outside and the liquid groove 22.
【０００６】一対のシール部材３０は、前記軸受１０の
外周固定面と軸受ケーシングの内周固定面との隙間に円
環状空間を形成する様に回転軸の長手方向に配されるシ
ールである。シール部材３０は、例えば、軸受ケーシン
グ本体２１の液体溝２２を間に挟む位置にあたるダンパ
内輪１２の外周固定面に設けられた溝に嵌まったピスト
ンリングの様にその合口からわずかにオイルがリークす
るシールである。The pair of seal members 30 are seals arranged in the longitudinal direction of the rotary shaft so as to form an annular space in the gap between the outer peripheral fixed surface of the bearing 10 and the inner peripheral fixed surface of the bearing casing. The seal member 30 is, for example, a piston ring fitted in a groove provided on the outer peripheral fixing surface of the damper inner ring 12 at a position where the liquid groove 22 of the bearing casing body 21 is sandwiched therebetween. It is a seal to do.
【０００７】液体供給手段４０は、前記円環状空間に液
体を供給するものであり、タンク４１と液体ポンプ４２
とクーラ４３と液体供給配管４４とから構成される。タ
ンク４１が液体を溜め、液体ポンプ４２がタンク４１内
の液体を圧送し、クーラ４３が液体を冷却し、液体供給
配管４４が液体を軸受ケーシング２０の液体供給孔２３
に供給する。The liquid supply means 40 is for supplying a liquid to the annular space, and includes a tank 41 and a liquid pump 42.
And a cooler 43 and a liquid supply pipe 44. The tank 41 stores the liquid, the liquid pump 42 pumps the liquid in the tank 41, the cooler 43 cools the liquid, and the liquid supply pipe 44 transfers the liquid to the liquid supply hole 23 of the bearing casing 20.
Supply to.
【０００８】次に、従来のスクィーズフィルムダンパ軸
受２の作用を、説明する。液体が液体ポンプ４２によっ
て圧送され、クーラ４３によって冷却され、液体供給配
管４４により軸受ケーシング２０の液体供給孔２３に供
給される。液体は、液体供給孔２３から液体溝２２に入
り、環状空隙に充満する。液体は、シール部材から漏れ
て、タンク４１へ戻る。回転軸１が、軸受１０により回
転自在に支持される。回転軸１に生じた振動が軸受要素
１１を介して、ダンパ内輪１２に伝わる。ダンパ内輪１
２の外周固定面と軸受ケーシング２０の内周固定面とシ
ール部材３０で密閉された液体に圧力が生じ、その結果
生じるばね効果と減衰効果により、回転軸１に発生した
振動を適正な振動範囲に押さえ込む。Next, the operation of the conventional squeeze film damper bearing 2 will be described. The liquid is pumped by the liquid pump 42, cooled by the cooler 43, and supplied to the liquid supply hole 23 of the bearing casing 20 by the liquid supply pipe 44. The liquid enters the liquid groove 22 from the liquid supply hole 23 and fills the annular space. The liquid leaks from the seal member and returns to the tank 41. The rotating shaft 1 is rotatably supported by the bearing 10. The vibration generated in the rotating shaft 1 is transmitted to the damper inner ring 12 via the bearing element 11. Inner ring of damper 1
A pressure is generated in the liquid sealed by the outer peripheral fixed surface of 2, the inner peripheral fixed surface of the bearing casing 20 and the seal member 30, and the resulting spring effect and damping effect cause the vibration generated in the rotary shaft 1 to fall within an appropriate vibration range. Hold down.
【０００９】[0009]
【発明が解決しようとする課題】上述のスクィーズフィ
ルムダンパ軸受を用いた場合、回転軸がスクィーズフィ
ルムダンパ軸受で構成されるばね系と減衰系とで支持さ
れるので、スクィーズフィルムダンパ軸受の振動特性に
由来する固有振動数を有する。スクィーズフィルムダン
パ軸受を設計する時には、この固有振動数が回転軸の定
格運用の回転数帯域に含まれないように計画する。しか
し、スクィーズフィルムダンパ軸受は、軸受要素の発熱
の影響を受け易く、その結果、スクィーズフィルムダン
パ軸受の振動特性が変化して、設計時に意図していたば
ね特性又は振動特性を得られない場合があった。また、
設計段階でスクィーズフィルムダンパ軸受で支持される
回転軸の固有振動数を正確に見積もることは難しく、あ
る程度の誤差を生ずる。従って、製作後の調整段階で、
回転軸の固有振動数が定格回転数帯域に接近しているこ
とを発見する場合もあった。この場合、従来スクィーズ
フィルムダンパ軸受を設計し直したり、回転軸に付加質
量を付ける等の対策を施して、定格回転数帯域での回転
軸の異常振動を防止してきた。When the above-mentioned squeeze film damper bearing is used, since the rotary shaft is supported by the spring system and the damping system which are constituted by the squeeze film damper bearing, the vibration characteristic of the squeeze film damper bearing is obtained. Has a natural frequency derived from. When designing a squeeze film damper bearing, it is planned that this natural frequency is not included in the rotational speed band of the rated operation of the rotating shaft. However, the squeeze film damper bearing is easily affected by heat generation of the bearing element, and as a result, the vibration characteristic of the squeeze film damper bearing may change, and the spring characteristic or the vibration characteristic intended at the time of design may not be obtained. It was Also,
At the design stage, it is difficult to accurately estimate the natural frequency of the rotating shaft supported by the squeeze film damper bearing, and some error occurs. Therefore, in the adjustment stage after production,
In some cases, it was discovered that the natural frequency of the rotating shaft was close to the rated speed band. In this case, conventional squeeze film damper bearings have been redesigned or additional measures have been taken such as adding additional mass to the rotary shaft to prevent abnormal vibration of the rotary shaft in the rated speed band.
【００１０】ところで、スクィーズフィルムダンパ軸受
において、そのばね定数が液体の粘性に比例し、その粘
性係数が液体の粘性に比例することが知られている。そ
して、液体粘性は、液体の温度によって変化する。In the squeeze film damper bearing, it is known that its spring constant is proportional to the viscosity of liquid and its viscosity coefficient is proportional to the viscosity of liquid. The liquid viscosity changes with the temperature of the liquid.
【００１１】本発明は、上記知見に基づき、以上に述べ
た問題点に鑑み案出されたもので、従来のスクィーズフ
ィルムダンパ軸受にかわって、ばね特性と減衰特性を制
御できるスクィーズフィルムダンパ軸受を提供しようと
する。The present invention has been devised in view of the above-mentioned problems based on the above findings. A squeeze film damper bearing capable of controlling spring characteristics and damping characteristics is provided in place of the conventional squeeze film damper bearing. Try to provide.
【００１２】[0012]
【課題を解決するための手段】上記目的を達成するた
め、本発明に係る回転軸を支持するスクィーズフィルム
ダンパ軸受は、回転軸の外周を回転自在に支持する円筒
状の軸受と、前記軸受の外周固定面をわずかな隙間を介
して囲う内周固定面を有する軸受ケーシングと、前記軸
受の前記外周固定面と軸受ケーシングの前記内周固定面
との隙間に円環状空間を形成する様に回転軸の長手方向
に配された一対のシール部材と、前記円環状空間に液体
を供給する液体供給手段と、円環状空間に入る前記液体
を加熱する液体加熱器と、を備え、液体加熱器が液体の
温度を所定の温度に維持するものとした。In order to achieve the above object, a squeeze film damper bearing for supporting a rotating shaft according to the present invention comprises a cylindrical bearing for rotatably supporting the outer circumference of the rotating shaft, and a bearing for the bearing. A bearing casing having an inner circumference fixing surface that surrounds the outer circumference fixing surface with a slight gap, and a rotation so as to form an annular space in the gap between the outer circumference fixing surface of the bearing and the inner circumference fixing surface of the bearing casing. The liquid heater comprises a pair of seal members arranged in the longitudinal direction of the shaft, a liquid supply means for supplying a liquid to the annular space, and a liquid heater for heating the liquid entering the annular space. The temperature of the liquid was maintained at a predetermined temperature.
【００１３】上記本発明の構成により、円筒状の軸受が
回転軸の外周を回転自在に支持し、軸受ケーシングの内
周固定面が前記軸受の外周固定面をわずかな隙間を介し
て囲い、長手方向に配された一対のシール部材が前記軸
受の前記外周固定面と軸受ケーシングの前記内周固定面
との隙間に円環状空間を形成し、液体供給手段が前記円
環状空間に液体を供給し、液体加熱器が円環状空間に入
る前記液体を加熱し、液体加熱器が液体の温度を所定の
温度に維持するので、円環状空間の内部の液体の温度を
所望の温度に維持して、液体の温度に依存する特性を有
するスクィーズフィルムダンパ軸受の振動特性をコント
ロールでき、回転軸の振動特性をコントロールできる。According to the above-mentioned structure of the present invention, the cylindrical bearing rotatably supports the outer periphery of the rotary shaft, and the inner peripheral fixing surface of the bearing casing surrounds the outer peripheral fixing surface of the bearing with a slight gap, A pair of sealing members arranged in a direction forms an annular space in the gap between the outer peripheral fixed surface of the bearing and the inner peripheral fixed surface of the bearing casing, and the liquid supply means supplies liquid to the annular space. The liquid heater heats the liquid entering the annular space, and the liquid heater maintains the temperature of the liquid at a predetermined temperature, so that the temperature of the liquid inside the annular space is maintained at a desired temperature, It is possible to control the vibration characteristics of the squeeze film damper bearing, which has characteristics that depend on the temperature of the liquid, and to control the vibration characteristics of the rotating shaft.
【００１４】さらに、本発明に係るスクィーズフィルム
ダンパ軸受は、前記環状空間内の液体の温度を計測する
液体温度計測手段を備え、前記液体温度計測手段の出力
に基づき液体加熱器が液体の温度を所定の温度に維持す
るものとした。上記本発明の構成により、液体温度計測
手段が前記環状空間内の液体の温度を計測し、液体加熱
器が前記液体温度計測手段の出力に基づき液体の温度を
所定の温度に維持するので、円環状空間の内部の液体の
温度を所望の温度に精度良く維持して、液体の温度に依
存する特性を有するスクィーズフィルムダンパ軸受の特
性をコントロールでき、回転軸の振動特性を精度良くコ
ントロールできる。Further, the squeeze film damper bearing according to the present invention comprises liquid temperature measuring means for measuring the temperature of the liquid in the annular space, and the liquid heater measures the liquid temperature based on the output of the liquid temperature measuring means. It should be maintained at a predetermined temperature. With the above configuration of the present invention, the liquid temperature measuring means measures the temperature of the liquid in the annular space, and the liquid heater maintains the liquid temperature at a predetermined temperature based on the output of the liquid temperature measuring means. The temperature of the liquid inside the annular space can be accurately maintained at a desired temperature, the characteristics of the squeeze film damper bearing having the characteristics depending on the temperature of the liquid can be controlled, and the vibration characteristics of the rotating shaft can be accurately controlled.
【００１５】[0015]
【発明の実施の形態】以下、本発明の好ましい実施形態
を、図面を参照して説明する。なお、各図において、共
通する部分には同一の符号を付し、重複した説明を省略
する。BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings. In each drawing, common portions are denoted by the same reference numerals, and redundant description will be omitted.
【００１６】本発明の実施形態に係るスクィーズフィル
ムダンパ軸受の構造を説明する。図１は、本発明の実施
形態の側面断面図である。The structure of the squeeze film damper bearing according to the embodiment of the present invention will be described. FIG. 1 is a side sectional view of an embodiment of the present invention.
【００１７】スクィーズフィルムダンパ軸受２は、回転
軸１を支持するものであり、軸受１０と軸受ケーシング
２０と一対のシール部材３０と液体供給手段４０と液体
加熱器５０と液体温度計測手段６０とコントローラ７０
とで構成される。The squeeze film damper bearing 2 supports the rotating shaft 1, and has a bearing 10, a bearing casing 20, a pair of seal members 30, a liquid supply means 40, a liquid heater 50, a liquid temperature measuring means 60 and a controller. 70
Composed of and.
【００１８】回転軸１は、円筒形状の軸であり、通常高
速回転をする。軸受１０は、回転軸の外周を回転自在に
支持する軸受であり、軸受要素１１とダンパ内輪１２と
で構成される。軸受要素１１は、回転軸１の外周に接し
て、回転自在に支持するものであり、例えば、ころがり
軸受やジャーナル軸受である。ダンパ内輪１２は軸受要
素の外周に外ばめされた金属輪である。軸受要素１１が
ジャーナル軸受である場合は、軸受１０は、軸受要素１
１とダンパ内輪１２とに分離されず、一体の金属輪であ
ることもある。The rotary shaft 1 is a cylindrical shaft and usually rotates at high speed. The bearing 10 is a bearing that rotatably supports the outer circumference of the rotating shaft, and is composed of a bearing element 11 and a damper inner ring 12. The bearing element 11 is in contact with the outer periphery of the rotary shaft 1 and rotatably supports it, and is, for example, a rolling bearing or a journal bearing. The damper inner ring 12 is a metal ring that is fitted onto the outer periphery of the bearing element. When the bearing element 11 is a journal bearing, the bearing 10 is the bearing element 1
It may be an integral metal ring that is not separated into 1 and the damper inner ring 12.
【００１９】軸受ケーシング２０は、前記軸受１０の外
周固定面をわずかな隙間を介して囲う内周固定面を有す
るケーシング（以下、軸受ケーシング本体１１とい
う。）である。わずかな隙間とは、後述する液体〔例え
ば、オイル）のばね効果と減衰効果を奏させるのに必要
な寸法であり、例えば、０．１〜０．２ｍｍである。軸
受ケーシング本体１１の内周固定面には周方向に液体溝
２２が形成される。液体供給孔２３が軸受ケーシング本
体１１を貫通して、外側と液体溝２２とを連通する。The bearing casing 20 is a casing (hereinafter referred to as the bearing casing body 11) having an inner peripheral fixing surface surrounding the outer peripheral fixing surface of the bearing 10 with a slight gap. The slight gap is a dimension necessary for producing a spring effect and a damping effect of a liquid (for example, oil) described later, and is, for example, 0.1 to 0.2 mm. A liquid groove 22 is formed in the circumferential direction on the inner peripheral fixed surface of the bearing casing body 11. The liquid supply hole 23 penetrates the bearing casing body 11 to connect the outside and the liquid groove 22.
【００２０】一対のシール部材３０は、前記軸受１０の
外周固定面と軸受ケーシングの内周固定面との隙間に円
環状空間を形成する様に長手方向に配されるシールであ
る。シール部材３０は、例えば、軸受ケーシング本体２
１の液体溝２２を間に挟む位置にあたるダンパ内輪１２
の外周固定面に設けられた溝に嵌まったピストンリング
である。The pair of seal members 30 are seals arranged in the longitudinal direction so as to form an annular space in the gap between the outer peripheral fixing surface of the bearing 10 and the inner peripheral fixing surface of the bearing casing. The seal member 30 is, for example, the bearing casing body 2
The damper inner ring 12 corresponding to the position sandwiching the liquid groove 22 of No. 1
Is a piston ring fitted in a groove provided on the outer peripheral fixed surface of the.
【００２１】液体供給手段４０は、前記円環状空間に液
体を供給するものであり、タンク４１と液体ポンプ４２
とクーラ４３と液体供給配管４４とから構成される。タ
ンク４１が液体を溜め、液体ポンプ４２がタンク４１内
の液体を圧送し、クーラ４３が液体を冷却し、液体供給
配管４４が液体を軸受ケーシング２０の液体供給孔２３
に供給する。The liquid supply means 40 is for supplying a liquid to the annular space, and includes a tank 41 and a liquid pump 42.
And a cooler 43 and a liquid supply pipe 44. The tank 41 stores the liquid, the liquid pump 42 pumps the liquid in the tank 41, the cooler 43 cools the liquid, and the liquid supply pipe 44 transfers the liquid to the liquid supply hole 23 of the bearing casing 20.
Supply to.
【００２２】液体加熱器５０は、円環状空間に入る前記
液体を加熱する装置であり、液体供給配管４４上のクー
ラ４３と液体供給穴２３の間に設けられる。液体加熱器
５０は、後述するコントローラ７０により制御され、液
体に所望の熱を供給し、液体の温度を所望の値に維持す
る。The liquid heater 50 is a device for heating the liquid entering the annular space, and is provided between the cooler 43 on the liquid supply pipe 44 and the liquid supply hole 23. The liquid heater 50 is controlled by a controller 70 described later, supplies desired heat to the liquid, and maintains the temperature of the liquid at a desired value.
【００２３】液体温度計測手段６０は、前記環状空間内
の液体の温度を計測する装置であり、例えば熱電対であ
る。熱電対の温度感知部を環状空間内に位置する様に、
熱電対のシース管を軸受ケーシング２０に空けられた穴
に固定する。液体温度計測手段６０は、環状空間内の液
体の温度に対応する信号を後述するコントローラ７０に
伝達する。The liquid temperature measuring means 60 is a device for measuring the temperature of the liquid in the annular space, and is, for example, a thermocouple. So that the temperature sensing part of the thermocouple is located in the annular space,
The sheath tube of the thermocouple is fixed to the hole formed in the bearing casing 20. The liquid temperature measuring means 60 transmits a signal corresponding to the temperature of the liquid in the annular space to the controller 70 described later.
【００２４】コントローラ７０は、前記液体温度計測手
段６０の出力に基づき、液体の温度が所定の温度に維持
する様に液体加熱器５０を制御する装置である。The controller 70 is a device for controlling the liquid heater 50 so that the temperature of the liquid is maintained at a predetermined temperature based on the output of the liquid temperature measuring means 60.
【００２５】次に、従来のスクィーズフィルムダンパ軸
受２の作用を、説明する。液体が液体ポンプ４２によっ
て圧送され、クーラ４３によって冷却され、液体加熱器
５０により所望の熱を液体に加え、液体供給配管４４に
より軸受ケーシング２０の液体供給孔２３に供給され
る。液体は、液体供給孔２３から液体溝２２に入り、環
状空隙に充満する。液体は、シール部材から漏れて、タ
ンク４１へ戻る。回転軸１が、軸受１０により回転自在
に支持される。回転軸１に生じた振動が軸受要素１１を
介して、ダンパ内輪１２に伝わる。ダンパ内輪１２の外
周固定面と軸受ケーシング２０の内周固定面とシール部
材３０で囲まれた環状空間に密閉された液体に圧力が生
じ、その結果生じるばね効果と減衰効果により、回転軸
１に発生した振動を適正な振動範囲に押さえ込む。コン
トローラ７０が、前記液体温度計測手段６０の出力に基
づき、液体の温度が所定の値に維持する様に液体加熱器
５０を制御する。環状空間内の液体の温度が所定の温度
に維持されると、スクィーズフィルムダンパ軸受のばね
定数と減衰係数が液体の温度に対応した値になり、スク
ィーズフィルムダンパ軸受の振動特性が、所望の特性に
なる。回転軸１の運転回転数での回転軸の振動が少なく
なる様に、液体の温度を維持すると、回転軸の振動振幅
を少なくすることができる。Next, the operation of the conventional squeeze film damper bearing 2 will be described. The liquid is pumped by the liquid pump 42, cooled by the cooler 43, desired heat is added to the liquid by the liquid heater 50, and the liquid is supplied to the liquid supply hole 23 of the bearing casing 20 by the liquid supply pipe 44. The liquid enters the liquid groove 22 from the liquid supply hole 23 and fills the annular space. The liquid leaks from the seal member and returns to the tank 41. The rotating shaft 1 is rotatably supported by the bearing 10. The vibration generated in the rotating shaft 1 is transmitted to the damper inner ring 12 via the bearing element 11. Pressure is generated in the liquid sealed in the outer peripheral fixed surface of the damper inner ring 12, the inner peripheral fixed surface of the bearing casing 20, and the annular space surrounded by the seal member 30, and the resulting spring effect and damping effect cause the rotating shaft 1 to rotate. The generated vibration is suppressed within the proper vibration range. The controller 70 controls the liquid heater 50 based on the output of the liquid temperature measuring means 60 so that the temperature of the liquid is maintained at a predetermined value. When the temperature of the liquid in the annular space is maintained at a predetermined temperature, the spring constant and damping coefficient of the squeeze film damper bearing become values corresponding to the temperature of the liquid, and the vibration characteristics of the squeeze film damper bearing have the desired characteristics. become. If the temperature of the liquid is maintained such that the vibration of the rotary shaft at the operating speed of the rotary shaft 1 is reduced, the vibration amplitude of the rotary shaft can be reduced.
【００２６】上述の実施形態のスクィーズフィルムダン
パ軸受を用いれば、液体の温度を所望の温度に維持する
ことで、回転軸の振動による挙動を制御できる。さら
に、温度計測手段により得られた液体の温度に基づき、
液体の温度を制御するので、液体の温度を精度良く制御
でき、回転軸の振動による挙動を制御できる。By using the squeeze film damper bearing of the above-described embodiment, the behavior of the rotary shaft due to vibration can be controlled by maintaining the temperature of the liquid at a desired temperature. Furthermore, based on the temperature of the liquid obtained by the temperature measuring means,
Since the temperature of the liquid is controlled, the temperature of the liquid can be accurately controlled, and the behavior of the rotating shaft due to vibration can be controlled.
【００２７】本発明は以上に述べた実施形態に限られる
ものではなく、発明の要旨を逸脱しない範囲で各種の変
更が可能である。液体温度制御手段は、熱電対に限定さ
れず、他の計測手段でも良い。The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention. The liquid temperature control means is not limited to the thermocouple, and other measuring means may be used.
【００２８】[0028]
【発明の効果】以上説明したように本発明の回転軸を支
持するスクィーズフィルムダンパ軸受は、その構成によ
り、以下の効果を有する。円環状空間の内部の液体の温
度を所望の温度に維持して、液体の温度に依存する特性
を有するスクィーズフィルムダンパ軸受の振動特性をコ
ントロールでき、回転軸の振動特性をコントロールでき
る。また、円環状空間の内部の液体の温度を所望の温度
に精度良く維持して、液体の温度に依存する特性を有す
るスクィーズフィルムダンパ軸受の特性をコントロール
でき、回転軸の振動特性を精度良くコントロールでき
る。従って、ばね特性と減衰特性を制御できるスクィー
ズフィルムダンパ軸受を提供できる。As described above, the squeeze film damper bearing which supports the rotating shaft of the present invention has the following effects due to its structure. It is possible to maintain the temperature of the liquid inside the annular space at a desired temperature, control the vibration characteristics of the squeeze film damper bearing having the characteristics that depend on the temperature of the liquid, and control the vibration characteristics of the rotating shaft. In addition, the temperature of the liquid inside the annular space can be accurately maintained at the desired temperature, and the characteristics of the squeeze film damper bearing, which has characteristics that depend on the temperature of the liquid, can be controlled, and the vibration characteristics of the rotating shaft can be controlled accurately. it can. Therefore, it is possible to provide a squeeze film damper bearing capable of controlling the spring characteristic and the damping characteristic.
【００２９】[0029]
【図１】本発明の実施形態の概念図である。FIG. 1 is a conceptual diagram of an embodiment of the present invention.
【図２】従来の装置の概念図である。FIG. 2 is a conceptual diagram of a conventional device.
１ 回転軸 ２ スクィーズフィルムダンパ軸受 １０ 軸受 １１ 軸受要素 １２ ダンパ内輪 ２０ 軸受ケーシング ２１ 軸受ケーシング本体 ２２ 液体溝 ２３ 液体供給穴 ３０ シール部材 ４０ 液体供給手段 ４１ タンク ４２ 液体ポンプ ４３ クーラ ５０ 液体加熱器（ヒータ） ６０ 液体温度計測手段（熱電対） ７０ コントローラ 1 rotation axis 2 Squeeze film damper bearing 10 bearings 11 Bearing element 12 damper inner ring 20 bearing casing 21 Bearing casing body 22 Liquid groove 23 Liquid supply hole 30 Seal member 40 Liquid supply means 41 tanks 42 Liquid pump 43 Cooler 50 Liquid heater (heater) 60 Liquid temperature measuring means (thermocouple) 70 controller
Claims (2)
ンパ軸受であって、回転軸の外周を回転自在に支持する
円筒状の軸受と、前記軸受の外周固定面をわずかな隙間
を介して囲う内周固定面を有する軸受ケーシングと、前
記軸受の前記外周固定面と軸受ケーシングの前記内周固
定面との隙間に円環状空間を形成する様に回転軸の長手
方向に配された一対のシール部材と、前記円環状空間に
液体を供給する液体供給手段と、円環状空間に入る前記
液体を加熱する液体加熱器と、を備え、液体加熱器が液
体の温度を所定の温度に維持することを特徴とするスク
ィーズフィルムダンパ軸受。1. A squeeze film damper bearing for supporting a rotating shaft, comprising a cylindrical bearing for rotatably supporting the outer periphery of the rotating shaft and an inner periphery for surrounding an outer peripheral fixing surface of the bearing with a slight gap. A bearing casing having a fixed surface, and a pair of seal members arranged in the longitudinal direction of the rotating shaft so as to form an annular space in the gap between the outer peripheral fixed surface of the bearing and the inner peripheral fixed surface of the bearing casing. A liquid supply means for supplying a liquid to the annular space, and a liquid heater for heating the liquid entering the annular space, wherein the liquid heater maintains the temperature of the liquid at a predetermined temperature. Squeeze film damper bearing.
体温度計測手段を備え、前記液体温度計測手段の出力に
基づき液体加熱器が液体の温度を所定の温度に維持する
ことを特徴とする請求項１に記載のスクィーズフィルム
ダンパ軸受。2. A liquid temperature measuring means for measuring the temperature of the liquid in the annular space, wherein the liquid heater maintains the temperature of the liquid at a predetermined temperature based on the output of the liquid temperature measuring means. The squeeze film damper bearing according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001340108A JP2003139134A (en) | 2001-11-06 | 2001-11-06 | Squeeze film damper bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001340108A JP2003139134A (en) | 2001-11-06 | 2001-11-06 | Squeeze film damper bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003139134A true JP2003139134A (en) | 2003-05-14 |
Family
ID=19154359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001340108A Pending JP2003139134A (en) | 2001-11-06 | 2001-11-06 | Squeeze film damper bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003139134A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004339986A (en) * | 2003-05-14 | 2004-12-02 | Ishikawajima Harima Heavy Ind Co Ltd | Bearing device of pump |
| JP2008138779A (en) * | 2006-12-01 | 2008-06-19 | Ntn Corp | Shaft supporting device and preload method for cylindrical roller bearing |
| WO2013183517A1 (en) * | 2012-06-08 | 2013-12-12 | Kato Heizaburo | Rolling-element bearing |
| WO2013183518A1 (en) * | 2012-06-08 | 2013-12-12 | Kato Heizaburo | Bearing device |
| JP2017194159A (en) * | 2016-04-22 | 2017-10-26 | ゼネラル・エレクトリック・カンパニイ | System and method for variable squeeze film damper |
| JP2018132107A (en) * | 2017-02-14 | 2018-08-23 | 三菱重工業株式会社 | Power transmission device |
| JP2018138806A (en) * | 2017-02-24 | 2018-09-06 | 本田技研工業株式会社 | Squeeze film damper bearing device |
| EP3628879A1 (en) * | 2018-09-28 | 2020-04-01 | Rolls-Royce Corporation | Drain arrangement for a squeeze film damper |
| JPWO2020194381A1 (en) * | 2019-03-22 | 2020-10-01 | ||
| US11187267B2 (en) * | 2018-07-26 | 2021-11-30 | Ihi Corporation | Bearing structure |
| US11486270B2 (en) | 2018-09-28 | 2022-11-01 | Rolls-Royce Corporation | Splined oil catcher |
| US11674397B2 (en) | 2020-11-18 | 2023-06-13 | General Electric Company | Variable stiffness damper system |
-
2001
- 2001-11-06 JP JP2001340108A patent/JP2003139134A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004339986A (en) * | 2003-05-14 | 2004-12-02 | Ishikawajima Harima Heavy Ind Co Ltd | Bearing device of pump |
| JP2008138779A (en) * | 2006-12-01 | 2008-06-19 | Ntn Corp | Shaft supporting device and preload method for cylindrical roller bearing |
| WO2013183517A1 (en) * | 2012-06-08 | 2013-12-12 | Kato Heizaburo | Rolling-element bearing |
| WO2013183518A1 (en) * | 2012-06-08 | 2013-12-12 | Kato Heizaburo | Bearing device |
| US10746222B2 (en) | 2016-04-22 | 2020-08-18 | General Electric Company | System and method for a variable squeeze film damper |
| JP2017194159A (en) * | 2016-04-22 | 2017-10-26 | ゼネラル・エレクトリック・カンパニイ | System and method for variable squeeze film damper |
| JP2018132107A (en) * | 2017-02-14 | 2018-08-23 | 三菱重工業株式会社 | Power transmission device |
| JP2018138806A (en) * | 2017-02-24 | 2018-09-06 | 本田技研工業株式会社 | Squeeze film damper bearing device |
| US11187267B2 (en) * | 2018-07-26 | 2021-11-30 | Ihi Corporation | Bearing structure |
| EP3628879A1 (en) * | 2018-09-28 | 2020-04-01 | Rolls-Royce Corporation | Drain arrangement for a squeeze film damper |
| US11022174B2 (en) | 2018-09-28 | 2021-06-01 | Rolls-Royce Corporation | Drain arrangement for a squeeze film damper |
| US11486270B2 (en) | 2018-09-28 | 2022-11-01 | Rolls-Royce Corporation | Splined oil catcher |
| JPWO2020194381A1 (en) * | 2019-03-22 | 2020-10-01 | ||
| WO2020194381A1 (en) * | 2019-03-22 | 2020-10-01 | 三菱重工エンジン＆ターボチャージャ株式会社 | Bearing device and rotation device |
| US11655851B2 (en) | 2019-03-22 | 2023-05-23 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Bearing device and rotating device |
| US11674397B2 (en) | 2020-11-18 | 2023-06-13 | General Electric Company | Variable stiffness damper system |
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