JPH11248407A - Instrument for measuring deformation of rotating body - Google Patents
Instrument for measuring deformation of rotating bodyInfo
- Publication number
- JPH11248407A JPH11248407A JP5044198A JP5044198A JPH11248407A JP H11248407 A JPH11248407 A JP H11248407A JP 5044198 A JP5044198 A JP 5044198A JP 5044198 A JP5044198 A JP 5044198A JP H11248407 A JPH11248407 A JP H11248407A
- Authority
- JP
- Japan
- Prior art keywords
- amount
- rotating body
- deformation
- blade
- rotation
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、各種タービンやフ
ァンなどの回転体が回転した場合の翼の捩り戻り量や軸
方向の縮み量など、回転体の変形量を電磁ピックアップ
などの距離を計測するセンサを用いて計測する装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention measures the amount of deformation of a rotating body such as the amount of twisting back of a blade and the amount of axial shrinkage when a rotating body such as various turbines and fans rotates, and measures the distance of an electromagnetic pickup or the like. The present invention relates to an apparatus for measuring using a sensor that performs measurement.
【０００２】[0002]
【従来の技術】回転体の変形量、例えば回転翼の捩り戻
り量を計測する技術の一つとして、タービンなどの車室
の一部にストロボ撮影の可能なカメラを設置し、そのタ
ービンなどの回転周波数をトリガタイミングとしてシャ
ッターをきる装置を用いることにより、ある決まった翼
を撮影することが出来ることを利用し、回転数毎の写真
を比較することで回転翼の捩り戻り量を計測していたと
いわれている。2. Description of the Related Art As one of the techniques for measuring the amount of deformation of a rotating body, for example, the amount of torsional return of a rotor, a camera capable of flash photography is installed in a part of a cabin of a turbine or the like, and the turbine or the like is installed. Utilizing the fact that a certain wing can be photographed by using a device that releases the shutter using the rotation frequency as a trigger timing, the amount of torsional return of the wing is measured by comparing photographs at each rotation speed. It is said that
【０００３】このような従来の変形量計測装置では、計
測に時間がかかり、回転体の作動中にその時点その時点
での変形量を知ることができない。、その他、従来、回
転体の変形量を計測する技術としては確立されたものが
無かったというのが現状である。In such a conventional deformation amount measuring apparatus, it takes a long time to measure, and it is not possible to know the deformation amount at that time during the operation of the rotating body. At present, there is no established technique for measuring the amount of deformation of a rotating body.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、各種タービ
ンやファンなどの回転体における回転による回転翼の捩
り戻りや回転軸の軸方向縮み量を簡単に、かつ、精度よ
く計測可能な回転体の変形量計測装置を提供することを
課題としている。SUMMARY OF THE INVENTION The present invention is directed to a rotating body capable of easily and accurately measuring the amount of rotation return of a rotating blade and the amount of axial shrinkage of a rotating shaft due to rotation of a rotating body such as various turbines and fans. It is an object of the present invention to provide a deformation amount measuring device.
【０００５】[0005]
【課題を解決するための手段】前記課題を解決するた
め、本発明は、回転翼の翼頭部を両側から挟むかたちで
２個、翼根部に向けて１個の距離計を静置し、その翼頭
部を挟んで静置した距離計と翼根部に向けて静置した距
離計による計測値の変化量の差から回転翼の回転による
捩り戻り量を計測するように構成した回転体の変形量計
測装置を提供する。In order to solve the above-mentioned problems, the present invention provides two rangefinders sandwiching a wing head of a rotary wing from both sides and one rangefinder toward a root of the wing, A rotating body configured to measure the amount of torsional unwinding due to the rotation of the rotor from the difference in the amount of change in the measured value between the rangefinder that stands still across the wing head and the rangefinder that stands still toward the root of the blade Provided is a deformation measuring device.
【０００６】この変形量計測装置によれば、回転翼の回
転に伴う捩り戻り量は翼頭部を両側から挟むかたちで静
置された２個の距離計で計測される翼頭部との間の距離
の変化として検出される。一方、距離計の検出値は回転
翼の回転速度によって変化するが、その回転数の変化は
翼根部に向けて静置された距離計で検出される。According to this deformation amount measuring device, the amount of torsional return caused by the rotation of the rotor blade is measured between the blade head measured by two rangefinders that are stationary with the blade head sandwiched from both sides. Is detected as a change in distance. On the other hand, the detection value of the range finder changes according to the rotation speed of the rotor, and the change in the number of rotations is detected by the range finder settled toward the blade root.
【０００７】従って、回転翼の翼頭部を両側から挟むか
たちで配設された２個の距離計の計測値と翼根部に向け
て静置された距離計の計測値の差をとることによって、
回転数の変化分を除いた回転翼の捩り戻りによる距離変
化を検出することとなる。こうして、本発明の回転体の
変形量計測装置によれば、回転翼の回転による捩り戻り
量を容易に、かつ正確に計測することができる。Therefore, by taking the difference between the measured values of the two distance meters disposed so as to sandwich the wing head of the rotary wing from both sides and the measured values of the distance meter settled toward the root of the blade. ,
The change in the distance due to the untwisting of the rotor, excluding the change in the number of revolutions, is detected. Thus, according to the apparatus for measuring the amount of deformation of a rotating body of the present invention, the amount of torsional return due to the rotation of a rotating blade can be easily and accurately measured.
【０００８】また、本発明は、前記課題を解決するた
め、軸方向に互いに間隔を保って複数個の距離計を回転
体に向けて静置し、それらの距離計による計測値の変化
量で距離計の静置位置における回転体の回転による軸方
向の縮み量を計測するように構成した回転体の変形量計
測装置を提供する。According to the present invention, in order to solve the above-mentioned problems, a plurality of distance meters are set at a distance to the rotating body with an interval between them in an axial direction, and the distance measured by the distance meters is used as an amount of change. Provided is a rotating body deformation amount measuring device configured to measure an axial contraction amount due to rotation of a rotating body at a stationary position of a distance meter.
【０００９】このように構成した回転体の変形量計測装
置によれば、回転体が回転数の上昇に伴う遠心力によっ
て軸方向に縮むと、軸方向に互いに間隔を保って回転体
に向けて静置された距離計が距離計と回転体との間の距
離の変化として検出し、各距離計が静置された位置にお
ける回転体の軸方向の縮み量を計測することができる。According to the apparatus for measuring the amount of deformation of a rotating body configured as described above, when the rotating body shrinks in the axial direction due to the centrifugal force accompanying an increase in the number of rotations, the rotating body is directed toward the rotating body while maintaining a gap in the axial direction. The stationary rangefinder can detect the change in the distance between the rangefinder and the rotating body, and measure the amount of axial contraction of the rotating body at the position where each rangefinder is placed still.
【００１０】[0010]
【発明の実施の形態】以下、本発明による回転体の変形
量計測装置を、図１〜５に示した実施の形態に基づいて
具体的に説明する。なお、以下の実施形態において、説
明を簡略にするため、同等の部分又は装置には同じ符号
を示してある。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an apparatus for measuring the amount of deformation of a rotating body according to the present invention. In the following embodiments, the same reference numerals are given to equivalent parts or devices for the sake of simplicity.
【００１１】（第１実施形態）まず、図１〜図４に示し
た第１実施形態による回転体の変形量計測装置について
説明する。第１実施形態による回転体の変形量計測装置
の概要構成を示す図１において、被計測物体としての回
転翼、すなわち、タービンやファンなどの回転翼７は、
回転軸９のディスク部８に、円周方向に等間隔に支持さ
れている。(First Embodiment) First, a description will be given of a rotation amount deformation measuring apparatus according to a first embodiment shown in FIGS. In FIG. 1 showing a schematic configuration of a rotation amount deformation measuring apparatus according to a first embodiment, a rotating blade as a measured object, that is, a rotating blade 7 such as a turbine or a fan,
The disk 8 of the rotating shaft 9 is supported at equal intervals in the circumferential direction.
【００１２】回転翼７の翼頭部に対向して両側から挟む
かたちで２個の電磁ピックアップ装置１０がタービン車
室などの静止部に設置されている。また、翼根部に１個
の電磁ピックアップ１０が設置されている。Two electromagnetic pickup devices 10 are installed in a stationary part such as a turbine casing so as to be opposed to the blade head of the rotary blade 7 from both sides. Also, one electromagnetic pickup 10 is provided at the blade root.
【００１３】図２は、前記したように本実施形態による
変形量計測装置で用いられている電磁ピックアップ装置
１０の構成を示している。この電磁ピックアップ装置１
０はヨーク１の一端側にコイル２が巻き付けられ、ヨー
ク１の他端側に永久磁石３が取り付けられていて、これ
らはケース４に組み込まれている。一方、ケース４の後
端部には信号端子５が取り付けられていて、ここにコイ
ル２からのリード線６が接続されている。FIG. 2 shows the configuration of the electromagnetic pickup device 10 used in the deformation amount measuring device according to the present embodiment as described above. This electromagnetic pickup device 1
Reference numeral 0 denotes a coil 2 wound around one end of a yoke 1, and a permanent magnet 3 attached to the other end of the yoke 1, which are incorporated in a case 4. On the other hand, a signal terminal 5 is attached to the rear end of the case 4, and a lead wire 6 from the coil 2 is connected to the signal terminal 5.
【００１４】このような構成をもつ電磁ピックアップ装
置１０は、ヨーク１の先端側を被磁性体が通過するとヨ
ーク１内の磁束密度が変化することによりコイル２に起
電力を発生する。しかもその起電力の大きさは被磁性体
の電磁ピックアップ装置１０との間の距離によって変化
するので、電磁ピックアップ装置１０は距離計として働
く。The electromagnetic pickup device 10 having such a configuration generates an electromotive force in the coil 2 due to a change in the magnetic flux density in the yoke 1 when the magnetic body passes through the tip side of the yoke 1. Moreover, since the magnitude of the electromotive force changes depending on the distance between the magnetic body and the electromagnetic pickup device 10, the electromagnetic pickup device 10 functions as a distance meter.
【００１５】次に図３は、被計測物体としてのタービン
翼の捩り戻り変形の様子を図示したものである。すなわ
ち、タービン翼は翼根部１３と翼頭部１４が捩れた状態
になっており、前記翼頭部１４にはシュラウド１５が取
り付けられている。Next, FIG. 3 shows a state of a torsional deformation of a turbine blade as an object to be measured. That is, the blade root 13 and the blade head 14 of the turbine blade are twisted, and the shroud 15 is attached to the blade head 14.
【００１６】このタービン翼が矢印１２の方向に回転し
ているとすると、タービン翼は矢印１２の方向の回転に
伴い遠心方向に力を受けるため、翼頭部１４が翼根部１
３の向きに戻ろうとし、矢印１６の方向に捩り戻り変形
を起こす。Assuming that the turbine blade is rotating in the direction of arrow 12, the turbine blade receives a force in the centrifugal direction with the rotation in the direction of arrow 12, so that the blade head 14
3 and return to the direction of arrow 16 to cause deformation.
【００１７】図４は、図１に示した変形量計測装置にお
ける基本的な計測原理を示したものである。つまり、回
転数が低い状態における回転翼７ａと電磁ピックアップ
装置１０との距離は矢印１７で表され、回転の上昇に伴
い回転翼７ａが捩り戻り変形１６を起こすことにより回
転翼７ｂとなり回転翼７ｂと電磁ピックアップ装置１０
との距離は矢印１８に変化し、矢印１７との差が回転翼
の捩り戻り量として表わされる。FIG. 4 shows a basic measurement principle in the deformation measuring device shown in FIG. That is, the distance between the rotor 7a and the electromagnetic pickup device 10 in a state where the number of rotations is low is represented by an arrow 17, and the rotor 7a is twisted back and deformed 16 as the rotation increases, thereby becoming the rotor 7b and the rotor 7b. And electromagnetic pickup device 10
Is changed to an arrow 18, and the difference from the arrow 17 is represented as the amount of twisting back of the rotor.
【００１８】次に、第１実施形態による変形量計測装置
による回転翼の回転に伴う変形量、すなわち、翼の捩り
戻り量の計測作用について説明する。Next, the operation of the deformation measuring device according to the first embodiment for measuring the amount of deformation associated with the rotation of the rotor, that is, the amount of untwisting of the blade will be described.
【００１９】図１から図４に示してあるように、電磁ピ
ップアップ装置１０はヨーク１の先端側を被磁性体１１
が通過することにより、前記ヨーク１内の磁束密度が変
化し、コイル２に起電力を発生する。As shown in FIGS. 1 to 4, the electromagnetic pip-up device 10 is configured such that the tip end of the yoke 1 is
, The magnetic flux density in the yoke 1 changes, and an electromotive force is generated in the coil 2.
【００２０】また、電磁ピックアップ装置１０の起電力
はヨーク１の先端側を通過する被磁性体１１の速度に比
例し、ヨーク１の先端から被磁性体１１までの相対距離
の２乗に反比例するため、前記起電力と被磁性体１１の
速度及び被磁性体１１とヨーク１との距離の関係を次式
で表すことができる。The electromotive force of the electromagnetic pickup device 10 is proportional to the speed of the magnetic body 11 passing through the tip of the yoke 1 and is inversely proportional to the square of the relative distance from the tip of the yoke 1 to the magnet 11. Therefore, the relationship between the electromotive force, the speed of the magnetic body 11, and the distance between the magnetic body 11 and the yoke 1 can be expressed by the following equation.
【００２１】[0021]
【数１】 (Equation 1)
【００２２】すなわち、回転数の上昇に伴い実際に回転
翼７が捩り戻り変形１６を起こした場合には翼頭部１４
を挟むように設置された２個の電磁ピックアップ装置１
０と回転翼７との相対距離が矢印１７から矢印１８に変
化し、回転翼７と電磁ピックアップ装置１０との距離は
近づくことになる。That is, when the rotating blade 7 actually undergoes torsional deformation 16 due to an increase in the rotational speed, the blade head 14
Two electromagnetic pickup devices 1 installed so as to sandwich
The relative distance between 0 and the rotary wing 7 changes from the arrow 17 to the arrow 18, and the distance between the rotary wing 7 and the electromagnetic pickup device 10 is reduced.
【００２３】このとき、回転翼７と電磁ピックアップ装
置１０との距離の変化量は左右（又は前縁、後縁共に）
共に同量と考えられるためコイル２内に発生する起電力
の増加分は等しくなる。逆に、翼根部１３には捩り戻り
変形１６の影響がないため、翼根部１３に設置された電
磁ピックアップ装置１０と回転翼７との相対距離は変化
せず、電磁ピックアップ装置１０における起電力の増加
は回転数すなわち被磁性体の速度の上昇によるもののみ
となる。At this time, the amount of change in the distance between the rotary wing 7 and the electromagnetic pickup device 10 is left and right (or both the leading edge and the trailing edge).
Since both are considered to be the same amount, the amount of increase in the electromotive force generated in the coil 2 becomes equal. Conversely, since the blade root 13 is not affected by the torsional deformation 16, the relative distance between the electromagnetic pickup device 10 installed on the blade root 13 and the rotary blade 7 does not change, and the electromotive force of the electromagnetic pickup device 10 does not change. The increase is only due to an increase in the rotation speed, that is, the speed of the magnetic body.
【００２４】つまり、翼頭部１４に設置された電磁ピッ
クアップ装置１０の起電力の増加分と翼根部１３に設置
された電磁ピックアップ装置１０の起電力の増加分との
差が回転翼７の捩り戻り量を表していることになる。That is, the difference between the increase in the electromotive force of the electromagnetic pickup device 10 installed on the wing head 14 and the increase in the electromotive force of the electromagnetic pickup device 10 installed on the blade root portion 13 is the torsion of the rotor 7. This indicates the amount of return.
【００２５】このとき、翼頭部１４に設置した電磁ピッ
プアップ装置１０の起電力も翼根部１３に設置した電磁
ピックアップ装置１０と同様に回転数に比例して増加す
るため、求めたい回転翼の捩り戻り量は回転数の上昇に
よる起電力の変化分を引いた電圧値を用いる必要があ
る。そして、回転翼の捩り戻り量を表した電圧値は数式
により回転翼７との距離に変換され、捩り戻り量とし
て表される。At this time, the electromotive force of the electromagnetic pick-up device 10 installed on the wing head 14 also increases in proportion to the number of rotations, similarly to the electromagnetic pickup device 10 installed on the blade root portion 13. It is necessary to use a voltage value obtained by subtracting a change in electromotive force due to an increase in the number of rotations as the amount of torsional return. Then, the voltage value representing the amount of twisting back of the rotor is converted into a distance from the rotor 7 by a mathematical formula, and is expressed as the amount of twisting back.
【００２６】また、上記式で用いられる比例定数ｋは
捩り戻り変形が起こる前の回転数において求められた値
を用いる必要があり、一般に回転翼７の捩り戻り変形１
６は回転数に比例して大きくなるため、比例定数ｋは捩
り戻り変形１６が起こる前の低い回転数で求めておく必
要がある。The proportional constant k used in the above equation needs to use a value obtained at the rotational speed before the occurrence of the torsional deformation.
Since 6 increases in proportion to the rotation speed, the proportionality constant k needs to be determined at a low rotation speed before the torsional deformation 16 occurs.
【００２７】（第２実施形態）次に、図５に示した第２
実施形態による回転体の変形量計測装置について説明す
る。図５に示すように、本実施形態による回転体の変形
量計測装置では各回転翼７の翼根部１３にそれぞれ対向
して一個づつ電磁ピックアップ装置１０が静置されてい
る。(Second Embodiment) Next, the second embodiment shown in FIG.
An apparatus for measuring the amount of deformation of a rotating body according to an embodiment will be described. As shown in FIG. 5, in the rotating body deformation amount measuring apparatus according to the present embodiment, the electromagnetic pickup devices 10 are placed one by one so as to face the blade root portions 13 of the respective rotating blades 7.
【００２８】第１実施形態の場合と同様、被計測物体と
してのタービンやファンなどの回転翼７は、回転軸９の
ディスク部８に、円周方向に等間隔に支持されている。
電磁ピックアップ装置１０はタービン車室などの静止部
に設置されている。電磁ピックアップ装置１０の構成と
作用は第１実施形態において説明したところと同様であ
る。１９は回転軸９に取付けられたカップリングを示し
ている。As in the case of the first embodiment, the rotating blades 7 such as a turbine and a fan as objects to be measured are supported on the disk portion 8 of the rotating shaft 9 at equal intervals in the circumferential direction.
The electromagnetic pickup device 10 is installed in a stationary part such as a turbine room. The configuration and operation of the electromagnetic pickup device 10 are the same as those described in the first embodiment. Reference numeral 19 denotes a coupling attached to the rotating shaft 9.
【００２９】以上の構成をもつ図５の装置において、回
転数の上昇に伴い回転翼７の遠心力が作用し被計測物体
としてのタービンの回転軸９が縮むと、翼根部１３に設
置された各々の電磁ピックアップ装置１０と回転翼７と
の相対距離が変化することになる。In the apparatus shown in FIG. 5 having the above-described configuration, when the centrifugal force of the rotating blade 7 acts on the rotating blade 9 as the rotating speed increases and the rotating shaft 9 of the turbine as the object to be measured contracts, the rotating blade 9 is installed on the blade root 13. The relative distance between each electromagnetic pickup device 10 and the rotary wing 7 changes.
【００３０】また、遠心力による回転軸９の縮み量は回
転数の上昇に伴って変化し、カップリング１９を固定点
として各々の電磁ピックアップ装置１０の場所で異な
る。The amount of contraction of the rotating shaft 9 due to the centrifugal force changes with an increase in the number of rotations, and differs at each electromagnetic pickup device 10 with the coupling 19 as a fixed point.
【００３１】翼根部１３に設置した電磁ピックアップ装
置１０の起電力は回転軸９の縮みに関係なく回転数に比
例して増加するため、回転軸９の縮み量は回転数の上昇
による起電力の変化分を引いた電圧値を用いる必要があ
る。Since the electromotive force of the electromagnetic pickup device 10 installed on the blade root portion 13 increases in proportion to the rotation speed irrespective of the shrinkage of the rotation shaft 9, the amount of shrinkage of the rotation shaft 9 is reduced by the increase in the electromotive force due to the increase in the rotation speed. It is necessary to use a voltage value obtained by subtracting the change.
【００３２】回転軸９の縮み量を表した電圧値は先の
式により回転翼７との距離に変換され、各々の箇所に於
ける回転軸９の縮み量として表される。また、上記式
で用いる比例定数ｋは遠心力による回転軸９の縮みが起
こる前の回転数において求められた値を用いるため、前
記比例定数ｋは遠心力によるロータの縮みが起こる前の
低い回転数で求めておく必要がある。The voltage value representing the amount of contraction of the rotating shaft 9 is converted into the distance from the rotating blade 7 by the above equation, and is expressed as the amount of contraction of the rotating shaft 9 at each location. Further, since the proportional constant k used in the above equation uses a value obtained at the number of revolutions before the rotation shaft 9 contracts due to centrifugal force, the proportional constant k is low rotation before the rotor contracts due to centrifugal force. It is necessary to calculate by number.
【００３３】以上のようにして、本第２実施形態の計測
装置によれば、電磁ピックアップ１０が静置された位置
における回転軸９の回転による軸方向の縮み量を計測す
ることができる。As described above, according to the measuring device of the second embodiment, the amount of contraction in the axial direction due to the rotation of the rotating shaft 9 at the position where the electromagnetic pickup 10 is stationary can be measured.
【００３４】以上、本発明を図示した実施形態に基づい
て具体的に説明したが、本発明がこれらの実施形態に限
定されず特許請求の範囲に示す本発明の範囲内で、その
具体的構造、構成に種々の変更を加えてよいことはいう
までもない。As described above, the present invention has been specifically described based on the illustrated embodiments. However, the present invention is not limited to these embodiments, and specific structures within the scope of the present invention shown in the claims are set forth. Needless to say, various changes may be made to the configuration.
【００３５】例えば、上記実施形態では距離の変化を計
測するセンサとして電磁ピックアップを用いているが、
レーザを利用した距離計など電磁ピックアップに限ら
ず、適宜の距離計を採用してもよい。For example, in the above embodiment, an electromagnetic pickup is used as a sensor for measuring a change in distance.
An appropriate distance meter may be employed without being limited to an electromagnetic pickup such as a distance meter using a laser.
【００３６】[0036]
【発明の効果】以上説明したように、本発明の回転体の
変形量計測装置は、回転翼の翼頭部を両側から挟むかた
ちで２個、翼根部に向けて１個の距離計を静置してあ
り、その翼頭部を挟んで静置した距離計と翼根部に向け
て静置した距離計による計測値の変化量の差から回転翼
の回転による捩り戻り量を正確、かつ、簡単に計測する
ことができる。As described above, the apparatus for measuring the deformation of a rotating body according to the present invention comprises two rangefinders sandwiching the blade head of the rotor from both sides and one distance meter toward the blade root. The amount of torsional return due to the rotation of the rotating blade is accurate from the difference in the change in the measured value between the rangefinder that is stationary with the wing head sandwiched and the rangefinder that is stationary toward the blade root, and It can be easily measured.
【００３７】また、他の本発明の回転体の変形量計測装
置は、軸方向に互いに間隔を保って複数個の距離計を回
転体に向けて静置してあり、それらの距離計による計測
値の変化量で距離計の静置位置における回転体の回転に
よる軸方向の縮み量を正確、かつ、簡単に計測すること
ができる。Further, in the rotational body deformation amount measuring apparatus of the present invention, a plurality of distance meters are left stationary at a distance from each other in the axial direction toward the rotational body. The amount of change in the value makes it possible to accurately and easily measure the amount of axial contraction due to the rotation of the rotating body at the stationary position of the distance meter.
【図１】本発明の第１実施形態による回転体の変形量計
測装置の構成を示す説明図。FIG. 1 is an explanatory diagram showing a configuration of a rotational body deformation amount measuring device according to a first embodiment of the present invention.
【図２】図１の装置に用いられる電磁ピックアップ装置
の構造例を示す説明図。FIG. 2 is an explanatory view showing a structural example of an electromagnetic pickup device used in the device of FIG.
【図３】本発明の第１実施形態による変形量計測装置に
よる計測原理を説明するための回転翼の捩り戻り状態を
示す説明図。FIG. 3 is an explanatory diagram showing a state in which the rotating blades are untwisted for explaining the measurement principle of the deformation measuring device according to the first embodiment of the present invention.
【図４】本発明の第１実施形態の装置による回転翼の捩
り戻り量の計測原理を示す説明図。FIG. 4 is an explanatory diagram showing the principle of measuring the amount of torsional return of the rotor by the apparatus according to the first embodiment of the present invention.
【図５】本発明の第２実施形態による回転体の変形量計
測装置の構成を示す説明図。FIG. 5 is an explanatory diagram showing a configuration of a rotational body deformation amount measuring device according to a second embodiment of the present invention.
１ ヨーク ２ コイル ３ 永久磁石 ４ ケース ５ 信号端子 ６ リード線 ７ 回転翼 ８ ディスク部 ９ 回転軸 １０ 電磁ピックアップ １１ 被磁性体 １２ 回転方向を示す矢印 １３ 翼根部 １４ 翼頭部 １５ シュラウド １６ 捩り戻り変形 DESCRIPTION OF SYMBOLS 1 Yoke 2 Coil 3 Permanent magnet 4 Case 5 Signal terminal 6 Lead wire 7 Rotating blade 8 Disk part 9 Rotating shaft 10 Electromagnetic pickup 11 Magnetic body 12 Arrow indicating rotation direction 13 Blade root 14 Wing head 15 Shroud 16 Torsion return deformation
Claims (2)
２個、翼根部に向けて１個の距離計を静置し、前記翼頭
部を挟んで静置した距離計と前記翼根部に向けて静置し
た距離計による計測値の変化量の差から前記回転翼の回
転による捩り戻り量を計測するように構成したことを特
徴とする回転体の変形量計測装置。1. A rangefinder having two blades sandwiched between both sides of a wing head of a rotary wing and one distance meter toward a blade root portion, wherein the distance meter and the wing are placed still with the wing head sandwiched therebetween. An apparatus for measuring the amount of deformation of a rotating body, wherein an amount of torsional return caused by rotation of the rotary blade is measured from a difference in a change in a measured value obtained by a distance meter settled toward a root.
離計を回転体に向けて静置し、前記距離計による計測値
の変化量で同距離計の静置位置における前記回転体の回
転による軸方向の縮み量を計測するように構成したこと
を特徴とする回転体の変形量計測装置。2. A method in which a plurality of rangefinders are allowed to stand at a rotating body with an interval therebetween in an axial direction, and the rotating body at a stationary position of the same rangefinder is determined by an amount of change in a value measured by the rangefinder. An apparatus for measuring the amount of deformation of a rotating body, which is configured to measure the amount of axial contraction due to rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05044198A JP3534604B2 (en) | 1998-03-03 | 1998-03-03 | Deformation measurement device for rotating body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05044198A JP3534604B2 (en) | 1998-03-03 | 1998-03-03 | Deformation measurement device for rotating body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11248407A true JPH11248407A (en) | 1999-09-17 |
| JP3534604B2 JP3534604B2 (en) | 2004-06-07 |
Family
ID=12858957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05044198A Expired - Fee Related JP3534604B2 (en) | 1998-03-03 | 1998-03-03 | Deformation measurement device for rotating body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3534604B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015006454A1 (en) * | 2013-07-09 | 2015-01-15 | United Technologies Corporation | Non-contact strain measurement |
| CN111256636A (en) * | 2018-11-30 | 2020-06-09 | 上海电气电站设备有限公司 | Method for measuring torsion of blade |
-
1998
- 1998-03-03 JP JP05044198A patent/JP3534604B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015006454A1 (en) * | 2013-07-09 | 2015-01-15 | United Technologies Corporation | Non-contact strain measurement |
| US10049318B2 (en) | 2013-07-09 | 2018-08-14 | United Technologies Corporation | In-situ balancing of plated polymers |
| US10402716B2 (en) | 2013-07-09 | 2019-09-03 | United Technologies Corporation | Non-contact strain measurement |
| CN111256636A (en) * | 2018-11-30 | 2020-06-09 | 上海电气电站设备有限公司 | Method for measuring torsion of blade |
| CN111256636B (en) * | 2018-11-30 | 2021-11-19 | 上海电气电站设备有限公司 | Method for measuring torsion of blade |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3534604B2 (en) | 2004-06-07 |
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