JPH09287907A - Three-dimensional displacement sensor - Google Patents
Three-dimensional displacement sensorInfo
- Publication number
- JPH09287907A JPH09287907A JP10082496A JP10082496A JPH09287907A JP H09287907 A JPH09287907 A JP H09287907A JP 10082496 A JP10082496 A JP 10082496A JP 10082496 A JP10082496 A JP 10082496A JP H09287907 A JPH09287907 A JP H09287907A
- Authority
- JP
- Japan
- Prior art keywords
- displacement
- dimensional
- attached
- core
- transmitting
- 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.)
- Granted
Links
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ジェットエンジン
のコア部分を構成する高温雰囲気中の部材と、ダクト部
分を構成する低温雰囲気中の部材との、相対変位を計測
する三次元変位センサーに係わり、更に詳しくは、サー
モカップルの寿命と信頼性を高めるため、高温部の三次
元変位を検出可能な三次元変位センサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional displacement sensor for measuring relative displacement between a member in a high temperature atmosphere forming a core portion of a jet engine and a member in a low temperature atmosphere forming a duct portion. More specifically, the present invention relates to a three-dimensional displacement sensor capable of detecting a three-dimensional displacement of a high temperature part in order to enhance the life and reliability of the thermocouple.
【０００２】[0002]
【従来の技術】ターボファンエンジン１は、図８に模式
的に示すように、空気を取り入れるファン２、取り入れ
た空気を圧縮する圧縮機３、圧縮した空気により燃料を
燃焼させる燃焼器４、燃焼器４の燃焼ガスによりファン
２及び圧縮機３を駆動するタービン５、燃料を再噴射し
て再燃焼させるアフターバーナ６等を備えており、ファ
ン２で取り入れられた空気を、圧縮機３、燃焼器４およ
びタービン５を通るコア流７と、これらをバイパスする
バイパス流８（ファン流）とに分岐し、ミキサ部９で合
流させるようになっている。2. Description of the Related Art A turbofan engine 1, as schematically shown in FIG. 8, has a fan 2 for taking in air, a compressor 3 for compressing the taken-in air, a combustor 4 for burning fuel by the compressed air, and a combustion. It is equipped with a turbine 5 that drives the fan 2 and the compressor 3 by the combustion gas of the compressor 4, an afterburner 6 that reinjects fuel and recombusts the fuel, and the air taken in by the fan 2 is compressed by the compressor 3 and burns. A core flow 7 that passes through the reactor 4 and the turbine 5 and a bypass flow 8 (fan flow) that bypasses the core flow 7 and the core flow 7 are branched and combined by a mixer unit 9.
【０００３】圧縮機３、燃焼器４及び高圧タービン５ａ
で構成される部分をコアエンジン（又はコア部１０）と
呼び、ターボファンエンジン１は、このコアエンジンに
ファン２とファンタービン５ｂを追加した構成になって
いる。Compressor 3, combustor 4 and high pressure turbine 5a
The portion constituted by is referred to as a core engine (or core portion 10), and the turbofan engine 1 has a configuration in which a fan 2 and a fan turbine 5b are added to the core engine.
【０００４】[0004]
【発明が解決しようとする課題】上述したターボファン
エンジン１において、コアエンジンは、ケーシング内で
前後左右に大きく変位する。すなわち、エンジン運転中
に高温部は大きく熱膨張し、かつ推力の変化によりコア
エンジン全体がケーシング内で前後する。また、タービ
ン内においても、静翼（タービンベーン）に作用するガ
ス流によりタービンベーンが前後左右に変位する。In the turbofan engine 1 described above, the core engine is largely displaced forward, backward, leftward and rightward in the casing. That is, during engine operation, the high temperature portion undergoes large thermal expansion, and changes in thrust cause the entire core engine to move back and forth within the casing. Also in the turbine, the turbine vane is displaced in the front-rear direction and the left-right direction by the gas flow acting on the stationary blade (turbine vane).
【０００５】これらの変位は、ターボファンエンジンの
性能、エンジン補機の寿命等に大きく影響する。そのた
め、従来からこれらの変位を正確に把握することが、強
く求められていた。すなわち例えば、ファンダクトの最
外壁を固定端として、エンジン・コアの構成要素であ
る、タービンベーンの温度を測定するためのファンター
ビン入口温度サーモカップル感温部が、エンジンの軸方
向又は周方向、更には半径方向に移動する。これらの相
対変位量と変位方向は、ファンタービン入口温度サーモ
カップルの寿命に大きく影響するため、その挙動の実体
を把握することは、エンジン補機の寿命延長に係わる重
要課題となっている。These displacements greatly affect the performance of the turbofan engine, the life of engine accessories, and the like. Therefore, it has been conventionally strongly demanded to accurately grasp these displacements. That is, for example, with the outermost wall of the fan duct as a fixed end, a fan turbine inlet temperature thermocouple temperature-sensing unit for measuring the temperature of the turbine vane, which is a component of the engine core, is arranged in the axial or circumferential direction of the engine, Furthermore, it moves in the radial direction. Since the relative displacement amount and the displacement direction greatly affect the life of the fan turbine inlet temperature thermocouple, it is important to understand the actual behavior of the fan turbine inlet temperature thermocouple.
【０００６】しかし、従来、かかる変位計測は以下の２
つの理由で不可能と考えられていた。 コアエンジンやタービンベーンは、約５００〜６００
℃の高温に達する。 コアエンジンやタービンベーンは、静止部分（ケーシ
ング）に対して前後左右に三次元的に変位し、かつこの
変位量が大きい（例えば５０ｍｍ以上）。However, conventionally, such displacement measurement has been described in the following 2
Was considered impossible for one reason. The core engine and turbine vanes are about 500-600
Reach high temperature of ℃. The core engine and the turbine vane are three-dimensionally displaced forward, backward, leftward and rightward with respect to a stationary portion (casing), and the displacement amount is large (for example, 50 mm or more).
【０００７】本発明は、かかる問題点を解決するために
創案されたものである。すなわち、本発明の目的は、ジ
ェットエンジンのコア部分を構成する高温雰囲気中の部
材と、ダクト部分を構成する低温雰囲気中の部材との、
相対変位を計測することができる三次元変位センサーを
提供することにある。The present invention has been made to solve such a problem. That is, an object of the present invention is to provide a member in a high temperature atmosphere that constitutes a core portion of a jet engine and a member in a low temperature atmosphere that constitutes a duct portion,
It is to provide a three-dimensional displacement sensor capable of measuring relative displacement.
【０００８】[0008]
【課題を解決するための手段】本発明によれば、高温の
コア部に取り付けられた変位検知部と、低温のケーシン
グに取り付けられた変位変換部と、変位検知部から変位
変換部に三次元変位を伝達する変位伝達部とからなり、
変位伝達部は、バイパス流路を通して変位検知部から変
位変換部まで延びる細長い変位伝達ロッドと、該変位伝
達ロッドの中間部を揺動可能かつ軸方向に移動可能に支
持する支持金具と、からなり、変位伝達ロッドの先端部
の三次元変位をテコ式に末端部に伝達し、この変位量を
変位変換部で検出する、ことを特徴とする三次元変位セ
ンサーが提供される。According to the present invention, a displacement detecting section attached to a high temperature core section, a displacement converting section attached to a low temperature casing, and a three-dimensional displacement from the displacement detecting section to the displacement converting section. It consists of a displacement transmission unit that transmits displacement,
The displacement transmitting section is composed of an elongated displacement transmitting rod extending from the displacement detecting section to the displacement converting section through the bypass flow path, and a support metal fitting that supports the intermediate portion of the displacement transmitting rod so as to be swingable and axially movable. A three-dimensional displacement sensor is provided, which transmits a three-dimensional displacement of a tip portion of a displacement transmission rod to a distal end portion in a lever manner and detects the displacement amount by a displacement conversion unit.
【０００９】この構成により、細長い変位伝達ロッドの
中間部を支持金具で揺動可能かつ軸方向に移動可能に支
持することにより、変位伝達ロッドの先端部の三次元変
位をテコ式に末端部に伝達してこの変位量を変位変換部
で検出することができる。また、変位伝達ロッドは、バ
イパス流路を通して変位検知部から変位変換部まで延び
ているので、比較的低温（約２００℃前後）のバイパス
流により変位伝達ロッドを低温に保持することができ、
高温のコア部から変位変換部へ伝わる熱量を少なく抑
え、変位変換部を高温から保護しながら、コア部分を構
成する高温雰囲気中の部材と、ダクト部分を構成する低
温雰囲気中の部材との、相対変位を計測することができ
る。With this structure, the middle portion of the elongated displacement transmission rod is supported by the support fitting so as to be swingable and axially movable, so that the three-dimensional displacement of the distal end portion of the displacement transmission rod is leveraged to the distal end portion. The displacement amount can be transmitted and detected by the displacement conversion unit. Further, since the displacement transmission rod extends from the displacement detection unit to the displacement conversion unit through the bypass flow passage, the displacement transmission rod can be kept at a low temperature by the bypass flow of a relatively low temperature (about 200 ° C.),
While suppressing the amount of heat transmitted from the high temperature core portion to the displacement conversion portion and protecting the displacement conversion portion from high temperatures, the member in the high temperature atmosphere forming the core portion and the member in the low temperature atmosphere forming the duct portion, Relative displacement can be measured.
【００１０】本発明の好ましい実施形態によれば、前記
変位検知部は、ケーシングに外端が取り付けられ内方に
延びた中空ストラットを有し、該ストラットの内端面
は、変位伝達ロッドの軸線に直交するＸ−Ｙ変位面を形
成しており、前記変位伝達ロッドはストラットを軸方向
に貫通しており、変位検知部は更に、外端部が変位伝達
ロッドの先端部に枢着され、内端部が高温コア部に嵌合
し、該コア部の動きをＸ−Ｙ変位面に伝える移動側支持
金具と、該支持金具とＸ−Ｙ変位面との間に挟持され、
支持金具をコア部に密着させる圧縮スプリングとを有す
る。According to a preferred embodiment of the present invention, the displacement detecting portion has a hollow strut having an outer end attached to a casing and extending inward, and an inner end surface of the strut is aligned with an axis of the displacement transmitting rod. X-Y displacement planes that are orthogonal to each other are formed, the displacement transmission rod penetrates the strut in the axial direction, and the displacement detection unit further has an outer end pivotally attached to the distal end of the displacement transmission rod. The end part is fitted to the high temperature core part, and is sandwiched between the moving side support fitting for transmitting the movement of the core part to the XY displacement surface, and the support fitting and the XY displacement surface,
And a compression spring that brings the support fitting into close contact with the core portion.
【００１１】この構成により、内端部が高温コア部に嵌
合した変位検知部の外端部が変位伝達ロッドの先端部に
枢着しているので、コア部のＸ−Ｙ変位面に対するＸ−
Ｙ変位を、テコ式に末端部に伝達してそのレバー比で変
位変換部に伝え、コア部のＺ方向移動量をそのまま変位
伝達ロッドの先端部のＺ方向移動量として伝えることが
できる。With this configuration, since the outer end of the displacement detector having the inner end fitted to the high-temperature core is pivotally attached to the tip of the displacement transmitting rod, the X of the core with respect to the XY displacement surface is moved. −
The Y displacement can be transmitted to the distal end portion in a lever manner and transmitted to the displacement conversion portion at the lever ratio, and the Z direction movement amount of the core portion can be transmitted as it is as the Z direction movement amount of the distal end portion of the displacement transmission rod.
【００１２】前記変位変換部は、変位伝達ロッドの末端
部に取り付けられた円筒形の変位伝達ブロックと、該ブ
ロックの外周面のＸ−Ｙ変位を計測するＸ−Ｙ変位計
と、ブロックの外端面のＺ方向移動量を計測するＺ軸変
位計とからなる。この構成により、変位伝達ロッドによ
りテコ式にそのレバー比で変位変換部に伝えられたＸ−
Ｙ変位と、コア部のＺ方向移動量をそのまま変位変換部
に伝えられたＺ方向移動量をＸ−Ｙ変位計及びＺ軸変位
計により計測することができる。The displacement conversion unit is a cylindrical displacement transmission block attached to the distal end of the displacement transmission rod, an XY displacement gauge for measuring the XY displacement of the outer peripheral surface of the block, and the outside of the block. It comprises a Z-axis displacement gauge that measures the amount of movement of the end face in the Z direction. With this configuration, the displacement transmission rod leverages the lever ratio to transmit the X-
The Y-displacement and the Z-direction movement amount of the core portion can be directly measured by the X-Y displacement meter and the Z-axis displacement meter, the Z-direction movement amount being transmitted to the displacement conversion unit.
【００１３】前記Ｘ−Ｙ変位計は、一端がケーシングに
固定され他端がブロックの外周面に付勢された複数のカ
ンチレバーと、該カンチレバーに取り付けられその歪み
を検出するひずみゲージと、を有する。また、Ｘ軸方向
及びＹ軸方向にそれぞれ対向したそれぞれ１対のカンチ
レバーと、該カンチレバーに取り付けられその歪みを検
出するひずみゲージとを有し、ひずみゲージの出力を差
動入力とし、それらの出力を各軸方向の変位量とする差
動増幅器を更に備えることが好ましい。The XY displacement gauge has a plurality of cantilevers, one end of which is fixed to the casing and the other end of which is biased to the outer peripheral surface of the block, and a strain gauge which is attached to the cantilevers and detects the strain thereof. . Further, each of the cantilevers has a pair of cantilevers facing each other in the X-axis direction and the Y-axis direction, and a strain gauge attached to the cantilevers for detecting the strain, and the outputs of the strain gauges are used as differential inputs. It is preferable to further include a differential amplifier having a displacement amount in each axial direction.
【００１４】この構成により、ブロックの外周面に付勢
された複数のカンチレバーとひずみゲージにより、変位
伝達ロッドの末端部のＸ−Ｙ変位を正確に計測し、変位
伝達ロッドのレバー比により、高温コア部の変位を正確
に換算することができる。また、特にひずみゲージの出
力を差動入力とする差動増幅器を設けることにより、温
度補償ができ、計測精度を高めることができる。With this configuration, the XY displacement of the distal end portion of the displacement transmitting rod is accurately measured by the plurality of cantilevers and strain gauges biased on the outer peripheral surface of the block, and the high temperature is determined by the lever ratio of the displacement transmitting rod. The displacement of the core part can be accurately converted. Further, in particular, by providing a differential amplifier in which the output of the strain gauge is used as a differential input, temperature compensation can be performed and measurement accuracy can be improved.
【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。本発明の適用例として、エ
ンジン・コア部分の構成部材である、タービンベーンの
温度を測定するサーモカップルの形状を模して、エンジ
ンの運転過程で、コア，ダクト間に生じる相対変位によ
りサーモカップルに作用する三次元方向の相対変位（エ
ンジン軸（Ｘ軸），円周（Ｙ軸），及び半径（Ｚ軸））
に追従し、それぞれの変位量を電気信号に変換する三次
元変位センサーについて以下に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. As an application example of the present invention, the shape of a thermocouple for measuring the temperature of a turbine vane, which is a constituent member of an engine / core portion, is modeled, and the thermocouple is generated by a relative displacement generated between a core and a duct in an engine operating process. Displacement in three dimensions acting on the engine (engine axis (X axis), circumference (Y axis), and radius (Z axis))
A three-dimensional displacement sensor that follows the above and converts each displacement amount into an electric signal will be described below.
【００１６】対象とする変位発生部は、エンジン・コア
部の極めて高温部に位置するため、変位測定のためのひ
ずみゲージ式変位変換器をエンジン内部に設置すること
は、使用温度域を越えるため不可能である。このため変
位変換部は、エンジン外部の温度条件を満足する位置に
設置し、更に、三次元変位伝達機構を設けることで、高
温部の変位を低温部に伝達することを可能にしたもので
ある。Since the target displacement generating portion is located at an extremely high temperature portion of the engine core portion, installing a strain gauge type displacement transducer for displacement measurement inside the engine exceeds the operating temperature range. It is impossible. Therefore, the displacement conversion unit is installed at a position that satisfies the temperature condition outside the engine, and further, by providing a three-dimensional displacement transmission mechanism, the displacement of the high temperature portion can be transmitted to the low temperature portion. .
【００１７】なお本発明は、ガスタービンエンジンにお
けるコアとダクト間の相対変位を、エンジン運転の条件
下で実測することが可能であり、ファンタービン入口温
度サーモカップルのみならず、コアとダクト間に介在す
る構造部材の相対変位量とその挙動を把握することがで
き、エンジン構成部材の構造強度信頼性向上に寄与する
ことができる。In the present invention, the relative displacement between the core and the duct in the gas turbine engine can be measured under the condition of engine operation, and not only the fan turbine inlet temperature thermocouple but also between the core and the duct can be measured. The relative displacement amount of the intervening structural member and its behavior can be grasped, and it can contribute to the improvement of the structural strength reliability of the engine component member.
【００１８】図１は、本発明による三次元変位センサー
の全体縦断面図、図２はひずみゲージ式カンチレバー型
変位変換器の構成を示す縦断面図、図３は、Ｘ，Ｙ二次
元方向の変位出力をアウトプットするＸ−Ｙ変位測定装
置の構成例、図４は、Ｚ軸方向の変位出力をアウトプッ
トする変位測定装置の構成例、図５は、三次元変位セン
サーの全体システムの一例を示すブロック図、図６は、
本発明にかかる三次元変位センサー構成要素の挙動を示
す動作図、図７は、Ｘ，Ｙ方向の変位発生時における、
ひずみゲージ式カンチレバー型変位変換器の挙動を示す
動作図である。FIG. 1 is an overall vertical sectional view of a three-dimensional displacement sensor according to the present invention, FIG. 2 is a vertical sectional view showing the structure of a strain gauge type cantilever type displacement transducer, and FIG. 3 is a two-dimensional X, Y direction. An example of the configuration of the XY displacement measuring device that outputs the displacement output, FIG. 4 is an example of the configuration of the displacement measuring device that outputs the displacement output in the Z-axis direction, and FIG. 5 is an example of the entire system of the three-dimensional displacement sensor. 6 is a block diagram showing
FIG. 7 is an operation diagram showing the behavior of the three-dimensional displacement sensor component according to the present invention, and FIG.
It is an operation view showing the behavior of the strain gauge type cantilever type displacement transducer.
【００１９】図１において、本発明の三次元変位センサ
ーは、高温のコア部１０に取り付けられた変位検知部２
０と、低温のケーシング１１に取り付けられた変位変換
部４０と、変位検知部２０から変位変換部４０に三次元
変位を伝達する変位伝達部３０とからなる。変位伝達部
３０は、バイパス流路８を通して変位検知部２０から変
位変換部４０まで延びる細長い変位伝達ロッド３２と、
変位伝達ロッド３２の中間部を揺動可能かつ軸方向に移
動可能に支持する支持金具３４とからなり、変位伝達ロ
ッド３２の先端部３２ａの三次元変位をテコ式に末端部
３２ｂに伝達し、この変位量を変位変換部４０で検出す
るようになっている。Referring to FIG. 1, the three-dimensional displacement sensor of the present invention comprises a displacement detector 2 attached to a high temperature core 10.
0, a displacement conversion unit 40 attached to the low temperature casing 11, and a displacement transmission unit 30 that transmits a three-dimensional displacement from the displacement detection unit 20 to the displacement conversion unit 40. The displacement transmission unit 30 includes an elongated displacement transmission rod 32 extending from the displacement detection unit 20 to the displacement conversion unit 40 through the bypass flow path 8.
And a support metal fitting 34 that supports the intermediate portion of the displacement transmitting rod 32 so as to be swingable and axially movable, and transmits the three-dimensional displacement of the tip portion 32a of the displacement transmitting rod 32 to the end portion 32b in a lever manner. The displacement conversion unit 40 detects this displacement amount.
【００２０】図１において、変位検知部２０は、ケーシ
ング１１に外端２２ａが取り付けられ内方に延びた中空
ストラット２２を有する。このストラット２２の内端面
２２ｂは、変位伝達ロッド３２の軸線に直交するＸ−Ｙ
変位面を形成している。また変位伝達ロッド３２はスト
ラット２２を軸方向に貫通している。変位検知部２０は
更に、移動側支持金具２４、圧縮スプリング２６、及び
スプリング座２７を有する。移動側支持金具２４は、外
端部２４ａが変位伝達ロッド３２の先端部３２ａにボー
ルヒンジで枢着され、内端部２４ｂが高温コア部１０に
嵌合してコア部１０の動きをＸ−Ｙ変位面２２ｂに伝え
るようになっている。また、圧縮スプリング２６は、支
持金具２４とＸ−Ｙ変位面２２ｂとの間に挟持され、支
持金具２４をコア部１０に密着させるようになってい
る。In FIG. 1, the displacement detecting section 20 has a hollow strut 22 having an outer end 22a attached to the casing 11 and extending inward. The inner end surface 22b of the strut 22 is XY orthogonal to the axis of the displacement transmission rod 32.
It forms the displacement plane. The displacement transmission rod 32 penetrates the strut 22 in the axial direction. The displacement detector 20 further includes a moving side support fitting 24, a compression spring 26, and a spring seat 27. An outer end portion 24a of the moving side support fitting 24 is pivotally attached to a tip end portion 32a of the displacement transmitting rod 32 by a ball hinge, and an inner end portion 24b is fitted to the high temperature core portion 10 to move the core portion 10 by X-. It is adapted to be transmitted to the Y displacement surface 22b. Further, the compression spring 26 is sandwiched between the support fitting 24 and the XY displacement surface 22b so that the support fitting 24 is brought into close contact with the core portion 10.
【００２１】変位変換部４０は、変位伝達ロッド３２の
末端部３２ｂに取り付けられた円筒形の変位伝達ブロッ
ク４２と、ブロック４２の外周面のＸ−Ｙ変位を計測す
るＸ−Ｙ変位計４４と、ブロック４２の外端面のＺ方向
移動量を計測するＺ軸変位計４６とからなる。Ｘ−Ｙ変
位計４４は、一端がケーシング１１に固定され他端がブ
ロックの外周面に付勢された複数のカンチレバー４５ａ
と、カンチレバー４５ａに取り付けられその歪みを検出
するひずみゲージ４５ｂと、を備えている。The displacement conversion unit 40 includes a cylindrical displacement transmission block 42 attached to the end portion 32b of the displacement transmission rod 32, and an XY displacement gauge 44 for measuring the XY displacement of the outer peripheral surface of the block 42. , A Z-axis displacement meter 46 for measuring the amount of movement of the outer end surface of the block 42 in the Z direction. The XY displacement meter 44 has a plurality of cantilevers 45a, one end of which is fixed to the casing 11 and the other end of which is biased to the outer peripheral surface of the block.
And a strain gauge 45b that is attached to the cantilever 45a and detects the strain thereof.
【００２２】図２及び図３（Ａ）において、Ｘ軸方向及
びＹ軸方向にそれぞれ対向したそれぞれ１対のカンチレ
バー４５ａと、カンチレバー４５ａに取り付けられその
歪みを検出するひずみゲージ４５ｂとを有し、ひずみゲ
ージ４５ｂの出力を差動入力とし、それらの出力を各軸
方向の変位量とする差動増幅器４７ａを更に備えてい
る。この構成により、温度補償ができ、計測精度を高め
ることができる。2 and 3A, each has a pair of cantilevers 45a facing each other in the X-axis direction and the Y-axis direction, and a strain gauge 45b attached to the cantilever 45a for detecting the strain thereof. It further comprises a differential amplifier 47a that uses the outputs of the strain gauges 45b as differential inputs and uses the outputs as displacement amounts in each axial direction. With this configuration, temperature compensation can be performed and measurement accuracy can be improved.
【００２３】なお、図３（Ｂ）の増幅器４７ｂにより、
加算出力を得ることができ、図３（Ｃ）の増幅器４７ｃ
により平均出力を得ることができる。The amplifier 47b shown in FIG.
An added output can be obtained, and the amplifier 47c of FIG.
The average output can be obtained by
【００２４】図１において、三次元変位センサーの変位
検知部２０は、ケーシング１１のダクト外壁部からエン
ジン・コア部分１０に挿入するため、サーモカップル取
付座の挿入ポートを流用した形状となっているが、本発
明はこれに限定されるものではない。変位検知部２０
は、Ｘ，Ｙ軸については、基準位置（初期設定位置）に
対し、Ｘ−Ｙ座標面を正負方向の変位する。また、Ｚ軸
についても基準位置（初期設定位置）に対し、エンジン
中心、又は外側に向って、正負両方向の変位を生じる。
従って、これらの動きに追従し伝達すための移動側支持
金具２４を設けた。また、相対変位発生位置として、ス
プリング座２７の端面とストラット端面２２ｂとの摺動
面を、Ｘ−Ｙ座標に見立て、この面上を支持金具２４が
自由に移動できるようになっている。更に、Ｚ軸の正負
方向の変位に対応するため、移動側支持金具２４とＸ−
Ｙ座標面２２ｂとの間にスプリング２６を入れ、任意の
基準位置（初期設定位置）からの正負方向の変位に対
し、追従を可能にしている。In FIG. 1, since the displacement detecting portion 20 of the three-dimensional displacement sensor is inserted into the engine core portion 10 from the duct outer wall portion of the casing 11, the insertion port of the thermocouple mounting seat is diverted. However, the present invention is not limited to this. Displacement detector 20
Shifts the XY coordinate plane in the positive and negative directions with respect to the reference position (initial setting position) for the X and Y axes. Further, also with respect to the Z axis, displacements in both positive and negative directions are generated from the reference position (initial setting position) toward the center or outside of the engine.
Therefore, the moving side support fitting 24 for following and transmitting these movements is provided. Further, as a relative displacement generation position, the sliding surface between the end surface of the spring seat 27 and the strut end surface 22b is regarded as XY coordinates, and the support fitting 24 can freely move on this surface. Further, in order to deal with the displacement of the Z axis in the positive and negative directions, the moving side support fitting 24 and the X-
A spring 26 is inserted between the Y coordinate surface 22b and the Y coordinate surface 22b to enable displacement in a positive or negative direction from an arbitrary reference position (initial setting position).
【００２５】相対変位発生部位は、リア・ファン・ダク
ト内に位置し、高温空気流及びタービン・ケースからの
伝熱により極めて高温となるため、上述したように、変
位変換部４０はダクト内ではなく、温度的に緩やかなダ
クト外部に設置し、内部に生じている三方向の変位を外
部に伝えるテコ式変位伝達機構を設け対処している。図
１及び図２の例では、テコ式変位伝達機構は、Ｚ軸（エ
ンジン半径方向）の変位は直接（１：１）に、Ｘ−Ｙ軸
方向（Ｘ軸（エンジン軸方向）、Ｙ軸（エンジン周方
向））の変位はレバー比を（２：１）に設定し、高温部
において生じる変位を、エンジン外部の熱的に緩やかな
箇所まで伝達する。このテコ式変位伝達機構において、
Ｘ，Ｙ方向変位とＺ方向変位を同時に伝達するため、テ
コ式三次元変位伝達ロッド３２の先端部３２ａにはボー
ルヒンジを、支点となるヒンジ部には、回転と滑動が可
能な、回転・スライド・ヒンジ（支持金具３４）を設け
対処している。The relative displacement generating portion is located in the rear fan duct, and becomes extremely hot due to the high temperature air flow and heat transfer from the turbine case. Therefore, as described above, the displacement converting portion 40 is not provided in the duct. Instead, it is installed outside the duct that is mild in temperature, and a lever-type displacement transmission mechanism that transmits the displacements in the three directions that occur inside is provided to the outside. In the examples of FIGS. 1 and 2, the lever type displacement transmission mechanism is such that the displacement of the Z axis (engine radial direction) is direct (1: 1), the XY axis direction (X axis (engine axis direction), Y axis). For the displacement (in the engine circumferential direction), the lever ratio is set to (2: 1), and the displacement generated in the high temperature portion is transmitted to a thermally mild portion outside the engine. In this lever type displacement transmission mechanism,
In order to simultaneously transmit the X, Y-direction displacement and the Z-direction displacement, a ball hinge is provided at the tip end portion 32a of the lever type three-dimensional displacement transmission rod 32, and a hinge that serves as a fulcrum can rotate and slide. A slide hinge (supporting metal fitting 34) is provided to cope with this.
【００２６】更に、テコ式変位伝達ロッド３２のダクト
側端部３２ｂには、ドラム型の変位伝達ブロック４２が
固着され、その円周にひずみゲージ式カンチレバー型変
位変換器４４の探触エッジが初期変位を加えた状態で接
触している。更に、変位伝達ブロック４２の底部には、
ひずみゲージ式直進型変位変換器４６のスピンドル先端
（探触子）が、初期変位を与えた状態で接触している。Further, a drum type displacement transmission block 42 is fixed to the duct side end portion 32b of the lever type displacement transmission rod 32, and the probe edge of the strain gauge type cantilever type displacement transducer 44 is initially formed on the circumference thereof. It is in contact with displacement. Furthermore, at the bottom of the displacement transmission block 42,
The spindle tip (probe) of the strain gauge type linear displacement transducer 46 is in contact with the initial displacement.
【００２７】これにより、エンジン・ダクトの外側に設
けた変位変換器のうち、Ｚ軸方向の変位については、実
変位を直接伝達した変位量を、ひずみゲージ式直進型変
位変換器４６で検出し、Ｘ，Ｙ軸方向の変位について
は、実変位を１／２に変換した変位量を、ひずみゲージ
式カンチレバー型変位変換器４４で検出する。Ｚ軸方向
の変位は、ドラム型の変位伝達ブロック４２に伝達さ
れ、ひずみゲージ式直進型変位変換器４６のスピンドル
４６ａに変位を与え、その方向によりスピンドルは前進
又は後退する。この際、ひずみゲージ式カンチレバー型
変位変換器４４に対しては、ドラム型の変位伝達ブロッ
ク４２が、カンチレバー型変位変換器４４の探触エッジ
との接触面を摺動するのみで、ひずみゲージ式カンチレ
バー型変位変換器４４に変位を与えることなく、Ｚ軸関
連の情報信号が発生するのみで、Ｘ，Ｙ軸関連の情報信
号は発生せず、無効出力としてのクロストーク・ノイズ
は生じない。As a result, of the displacement transducers provided on the outside of the engine duct, for the displacement in the Z-axis direction, the displacement amount directly transmitting the actual displacement is detected by the strain gauge type linear displacement transducer 46. , X, Y axis direction displacement, the displacement amount obtained by converting the actual displacement into 1/2 is detected by the strain gauge type cantilever type displacement converter 44. The displacement in the Z-axis direction is transmitted to the drum-type displacement transmission block 42 to give a displacement to the spindle 46a of the strain gauge type linear displacement transducer 46, and the spindle moves forward or backward depending on the direction. At this time, with respect to the strain gauge type cantilever type displacement transducer 44, the drum type displacement transmission block 42 only slides on the contact surface with the probe edge of the cantilever type displacement transducer 44. Without giving a displacement to the cantilever type displacement transducer 44, only the Z-axis related information signal is generated, the X- and Y-axis related information signals are not generated, and crosstalk noise as an invalid output does not occur.
【００２８】Ｘ，Ｙ軸方向の変位は、ドラム型の変位伝
達ブロック４２に伝達され、ひずみゲージ式カンチレバ
ー型変位変換器４４のカンチレバーに変位を与え、その
方向に応じカンチレバーは初期の設定位置から迎角又は
俯角の変位をおこす。この際、ひずみゲージ式直進型変
位変換器４６のスピンドル先端は、ドラム型の変位伝達
ブロック４２の底面を滑走するのみで、ひずみゲージ式
直進型変位変換器４６に変位を与えることはなく、Ｘ，
Ｙ軸関連の情報信号が発生するのみで、Ｚ軸関連の情報
信号は発生せず、無効出力としてのクロストークは生じ
ない。The displacements in the X and Y axis directions are transmitted to the drum type displacement transmission block 42, which gives displacement to the cantilever of the strain gauge type cantilever type displacement converter 44, and the cantilever is moved from the initial set position according to the direction. Causes an angle of attack or depression. At this time, the spindle tip of the strain gauge type linear displacement transducer 46 only slides on the bottom surface of the drum type displacement transmission block 42 and does not give displacement to the strain gauge type linear displacement transducer 46. ，
Only the Y-axis related information signal is generated, the Z-axis related information signal is not generated, and crosstalk as an invalid output does not occur.
【００２９】Ｘ軸変位出力およびＹ軸変位出力をデータ
収録装置に記録する一方、Ｘ−Ｙレコーダに入力し、リ
アルタイムでＸ−Ｙ変位挙動をモニターするのがよい。
また、Ｚ軸方向の変位はボールヒンジを取り付けたテコ
式三次元変位伝達ロッドと、これを案内するスライド，
回転，ヒンジおよび変位伝達ブロックを介して直進型変
位計に直接伝達され、この変位量に対応する直進型変位
計の出力をひずみ増幅器に入力し、当該ひずみ増幅器出
力をＺ軸方法変位量とし、Ｚ軸変位出力をデータ収録装
置に記録し、そのデータをＺ軸方向変位測定値とする一
方Ｘ，Ｙ軸方向変位測定値の補正値として使用する。It is preferable to record the X-axis displacement output and the Y-axis displacement output in the data recording device while inputting them to the XY recorder to monitor the XY displacement behavior in real time.
Also, the displacement in the Z-axis direction is a lever type three-dimensional displacement transmission rod to which a ball hinge is attached, a slide for guiding the rod,
It is directly transmitted to the straight displacement type displacement meter via the rotation, hinge and displacement transmission block, the output of the straight displacement type displacement meter corresponding to this displacement amount is input to the strain amplifier, and the strain amplifier output is taken as the Z-axis method displacement amount, The Z-axis displacement output is recorded in a data recording device, and the data is used as a Z-axis direction displacement measurement value, while it is used as a correction value for the X- and Y-axis direction displacement measurement values.
【００３０】なお、本発明は上述した実施例に限定され
ず、本発明の要旨を逸脱しない範囲で種々変更できるこ
とは勿論である。The present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.
【００３１】[0031]
【発明の効果】上述した本発明の構成により、細長い変
位伝達ロッドの中間部を支持金具で揺動可能かつ軸方向
に移動可能に支持することにより、変位伝達ロッドの先
端部の三次元変位をテコ式に末端部に伝達してこの変位
量を変位変換部で検出することができる。また、変位伝
達ロッドは、バイパス流路を通して変位検知部から変位
変換部まで延びているので、比較的低温（約２００℃前
後）のバイパス流により変位伝達ロッドを低温に保持す
ることができ、高温のコア部から変位変換部へ伝わる熱
量を少なく抑え、変位変換部を高温から保護しながら、
コア部分を構成する高温雰囲気中の部材と、ダクト部分
を構成する低温雰囲気中の部材との、相対変位を計測す
ることができる。According to the above-mentioned structure of the present invention, the three-dimensional displacement of the tip end portion of the displacement transmission rod is supported by supporting the middle portion of the elongated displacement transmission rod by the support metal so as to be swingable and axially movable. The displacement amount can be detected by the displacement conversion unit by transmitting the displacement to the end portion in a lever manner. Further, since the displacement transmission rod extends from the displacement detection unit to the displacement conversion unit through the bypass flow path, the displacement transmission rod can be kept at a low temperature by the bypass flow of a relatively low temperature (about 200 ° C.) and the high temperature. While suppressing the amount of heat transferred from the core part to the displacement conversion part to protect the displacement conversion part from high temperatures,
It is possible to measure the relative displacement between the member in the high temperature atmosphere forming the core portion and the member in the low temperature atmosphere forming the duct portion.
【００３２】従って、本発明の三次元変位センサーは、
ジェットエンジンのコア部分を構成する高温雰囲気中の
部材と、ダクト部分を構成する低温雰囲気中の部材と
の、相対変位を計測することができる、優れた効果を有
する。Therefore, the three-dimensional displacement sensor of the present invention is
It has an excellent effect that the relative displacement between the member in the high temperature atmosphere forming the core portion of the jet engine and the member in the low temperature atmosphere forming the duct portion can be measured.
【図１】本発明による三次元変位センサーの全体縦断面
図である。FIG. 1 is an overall vertical sectional view of a three-dimensional displacement sensor according to the present invention.
【図２】ひずみゲージ式カンチレバー型変位変換器の構
成を示す縦断面図である。FIG. 2 is a vertical cross-sectional view showing the configuration of a strain gauge type cantilever type displacement transducer.
【図３】Ｘ，Ｙ二次元方向の変位出力をアウトプットす
るＸ−Ｙ変位測定装置の構成例じある。FIG. 3 is a structural example of an XY displacement measuring device that outputs displacement outputs in two-dimensional directions of XY.
【図４】Ｚ軸方向の変位出力をアウトプットする変位測
定装置の構成例である。FIG. 4 is a configuration example of a displacement measuring device that outputs a displacement output in the Z-axis direction.
【図５】三次元変位センサーの全体システムの一例を示
すブロック図である。FIG. 5 is a block diagram showing an example of an entire system of a three-dimensional displacement sensor.
【図６】本発明にかかる三次元変位センサー構成要素の
挙動を示す動作図である。FIG. 6 is an operation diagram showing a behavior of a three-dimensional displacement sensor component according to the present invention.
【図７】Ｘ，Ｙ方向の変位発生時における、ひずみゲー
ジ式カンチレバー型変位変換器の挙動を示す動作図であ
る。FIG. 7 is an operation diagram showing the behavior of the strain gauge type cantilever type displacement converter when displacements in the X and Y directions occur.
【図８】ターボファンエンジンの構成図である。FIG. 8 is a configuration diagram of a turbofan engine.
１ ターボファンエンジン ２ ファン ３ 圧縮機 ４ 燃焼器 ５ タービン ６ アフターバーナ ７ コア流 ８ バイパス流 ９ ミキサ部 １０ コアエンジン（コア部） １１ ケーシング ２０ 変位検知部 ２２ ストラット ２４ 移動側支持金具 ２６ 圧縮スプリング ２７ スプリング座 ３０ 変位伝達部 ３２ 変位伝達ロッド ３４ 支持金具（回転・スライド・ヒンジ） ４０ 変位変換部 ４２ 変位伝達ブロック ４４ Ｘ−Ｙ変位計（ひずみゲージ式カンチレバー型変
位変換器） ４５ａ カンチレバー ４５ｂ ひずみゲージ ４６ Ｚ軸変位計（ひずみゲージ式直進型変位変換器） ４７ａ 差動増幅器 ４７ｂ，４７ｃ 増幅器1 Turbofan engine 2 Fan 3 Compressor 4 Combustor 5 Turbine 6 Afterburner 7 Core flow 8 Bypass flow 9 Mixer part 10 Core engine (core part) 11 Casing 20 Displacement detection part 22 Strut 24 Moving side support metal fitting 26 Compression spring 27 Spring seat 30 Displacement transmission part 32 Displacement transmission rod 34 Support metal fittings (rotation, slide, hinge) 40 Displacement conversion part 42 Displacement transmission block 44 XY displacement gauge (strain gauge type cantilever type displacement converter) 45a Cantilever 45b Strain gauge 46 Z-axis displacement gauge (strain gauge type linear displacement transducer) 47a Differential amplifier 47b, 47c Amplifier
Claims (5)
部と、低温のケーシングに取り付けられた変位変換部
と、変位検知部から変位変換部に三次元変位を伝達する
変位伝達部とからなり、 変位伝達部は、バイパス流路を通して変位検知部から変
位変換部まで延びる細長い変位伝達ロッドと、該変位伝
達ロッドの中間部を揺動可能かつ軸方向に移動可能に支
持する支持金具と、からなり、変位伝達ロッドの先端部
の三次元変位をテコ式に末端部に伝達し、この変位量を
変位変換部で検出する、ことを特徴とする三次元変位セ
ンサー。1. A displacement detecting section attached to a high temperature core section, a displacement converting section attached to a low temperature casing, and a displacement transmitting section for transmitting a three-dimensional displacement from the displacement detecting section to the displacement converting section. The displacement transmission unit includes an elongated displacement transmission rod extending from the displacement detection unit to the displacement conversion unit through the bypass flow path, and a support metal member that supports the intermediate portion of the displacement transmission rod so as to be swingable and axially movable. The three-dimensional displacement sensor is characterized in that the three-dimensional displacement of the tip portion of the displacement transmitting rod is transmitted to the end portion in a lever-like manner, and this displacement amount is detected by the displacement conversion portion.
取り付けられ内方に延びた中空ストラットを有し、該ス
トラットの内端面は、変位伝達ロッドの軸線に直交する
Ｘ−Ｙ変位面を形成しており、前記変位伝達ロッドはス
トラットを軸方向に貫通しており、 変位検知部は更に、外端部が変位伝達ロッドの先端部に
枢着され、内端部が高温コア部に嵌合し、該コア部の動
きをＸ−Ｙ変位面に伝える移動側支持金具と、該支持金
具とＸ−Ｙ変位面との間に挟持され、支持金具をコア部
に密着させる圧縮スプリングとを有する、ことを特徴と
する請求項１に記載の三次元変位センサー。2. The displacement detector has a hollow strut having an outer end attached to a casing and extending inward, and an inner end surface of the strut has an XY displacement surface orthogonal to the axis of the displacement transmitting rod. The displacement transmitting rod penetrates the strut in the axial direction, and the displacement detecting portion further has an outer end portion pivotally attached to the distal end portion of the displacement transmitting rod and an inner end portion fitted to the high temperature core portion. And a moving side support metal fitting for transmitting the movement of the core portion to the XY displacement surface, and a compression spring sandwiched between the support metal fitting and the XY displacement surface to bring the support metal fitting into close contact with the core portion. It has, The three-dimensional displacement sensor of Claim 1 characterized by the above-mentioned.
端部に取り付けられた円筒形の変位伝達ブロックと、該
ブロックの外周面のＸ−Ｙ変位を計測するＸ−Ｙ変位計
と、ブロックの外端面のＺ方向移動量を計測するＺ軸変
位計と、からなることを特徴とする請求項１に記載の三
次元変位センサー。3. The displacement conversion unit includes a cylindrical displacement transmission block attached to a distal end of a displacement transmission rod, an XY displacement meter for measuring an XY displacement of an outer peripheral surface of the block, and the block. The three-dimensional displacement sensor according to claim 1, further comprising a Z-axis displacement meter that measures a Z-direction movement amount of the outer end surface of the.
に固定され他端がブロックの外周面に付勢された複数の
カンチレバーと、該カンチレバーに取り付けられその歪
みを検出するひずみゲージと、を有することを特徴とす
る請求項３に記載の三次元変位センサー。4. The XY displacement gauge includes a plurality of cantilevers, one end of which is fixed to a casing and the other end of which is biased to an outer peripheral surface of a block, and a strain gauge which is attached to the cantilevers and detects a strain thereof. The three-dimensional displacement sensor according to claim 3, further comprising:
たそれぞれ１対のカンチレバーと、該カンチレバーに取
り付けられその歪みを検出するひずみゲージとを有し、
ひずみゲージの出力を差動入力とし、それらの出力を各
軸方向の変位量とする差動増幅器を更に備える、ことを
特徴とする請求項３に記載の三次元変位センサー。5. A pair of cantilevers facing each other in the X-axis direction and the Y-axis direction, and a strain gauge attached to the cantilevers for detecting the strain thereof,
The three-dimensional displacement sensor according to claim 3, further comprising a differential amplifier that uses the outputs of the strain gauges as differential inputs and uses the outputs as displacement amounts in each axial direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10082496A JP3632793B2 (en) | 1996-04-23 | 1996-04-23 | 3D displacement sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10082496A JP3632793B2 (en) | 1996-04-23 | 1996-04-23 | 3D displacement sensor |
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| Publication Number | Publication Date |
|---|---|
| JPH09287907A true JPH09287907A (en) | 1997-11-04 |
| JP3632793B2 JP3632793B2 (en) | 2005-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10082496A Expired - Fee Related JP3632793B2 (en) | 1996-04-23 | 1996-04-23 | 3D displacement sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429474C (en) * | 2004-12-23 | 2008-10-29 | 大连理工大学 | Chrome nickel steel or nickel steel high temperature displacement transducer |
| CN102913471A (en) * | 2012-10-24 | 2013-02-06 | 安徽全柴锦天机械有限公司 | Tool for detecting runout of fan blades |
| CN106322686A (en) * | 2016-09-26 | 2017-01-11 | 中铁第四勘察设计院集团有限公司 | Anti-vibration anti-loosening ventilating system and ventilating method |
-
1996
- 1996-04-23 JP JP10082496A patent/JP3632793B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429474C (en) * | 2004-12-23 | 2008-10-29 | 大连理工大学 | Chrome nickel steel or nickel steel high temperature displacement transducer |
| CN102913471A (en) * | 2012-10-24 | 2013-02-06 | 安徽全柴锦天机械有限公司 | Tool for detecting runout of fan blades |
| CN106322686A (en) * | 2016-09-26 | 2017-01-11 | 中铁第四勘察设计院集团有限公司 | Anti-vibration anti-loosening ventilating system and ventilating method |
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| Publication number | Publication date |
|---|---|
| JP3632793B2 (en) | 2005-03-23 |
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