JPS597334A - Schlieran observation device for high-speed rotating body - Google Patents
Schlieran observation device for high-speed rotating bodyInfo
- Publication number
- JPS597334A JPS597334A JP57116421A JP11642182A JPS597334A JP S597334 A JPS597334 A JP S597334A JP 57116421 A JP57116421 A JP 57116421A JP 11642182 A JP11642182 A JP 11642182A JP S597334 A JPS597334 A JP S597334A
- Authority
- JP
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- Prior art keywords
- light
- rotating body
- observed
- mirror
- projected
- Prior art date
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- 230000001360 synchronised effect Effects 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 5
- 241001062872 Cleyera japonica Species 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 15
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 239000011521 glass Substances 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007794 visualization technique Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/45—Refractivity; Phase-affecting properties, e.g. optical path length using interferometric methods; using Schlieren methods
- G01N21/455—Schlieren methods, e.g. for gradient index determination; Shadowgraph
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0078—Testing material properties on manufactured objects
- G01N33/0081—Containers; Packages; Bottles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
- G01N21/9018—Dirt detection in containers
- G01N21/9027—Dirt detection in containers in containers after filling
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、ポンプ、タービン、送風機等の回転翼やその
他の高速回転体の内部や翼間の流体の流れ、あるいは翼
に対する圧力等を、その軸心方向から可視化できる高速
回転体シュリーレン観察装置に関するものである。[Detailed Description of the Invention] The present invention is capable of visualizing fluid flow inside and between blades of rotor blades such as pumps, turbines, blowers, and other high-speed rotating bodies, as well as pressure on the blades from the axial direction. This invention relates to a schlieren observation device for a high-speed rotating body.
タービン翼のような高速回転翼の内部や翼間の流体の流
れを可視化する種々の実験が従来から試みられているが
、翼の正面から観察する手法は皆無であり、特に近年の
ターボ機械の発達に伴ない、上述したような可視化の手
法が要望されている。Various experiments have been attempted to visualize the fluid flow inside and between blades of high-speed rotary blades such as turbine blades, but there is no method to observe the blade from the front, especially in recent years of turbomachinery. As technology advances, visualization methods such as those described above are in demand.
従来、高速回転翼の内部や翼間の流体の流れを可視化す
る場合、翼の断面モデルを作製し、風洞や衝撃波管等の
中に断面モデルを置き、あたかも歿が回転しているかの
ように任意の圧力で流体を流し７てその流れを光学的に
観察している。しかしながら、このような観察手法では
、翼を横方向から観察するので、正面から流体の流れを
観察することができず、翼の全面に及ぶ流体の挙動を観
察てきない。また、被観察モデルは静止しており、必ず
しも実際の翼における流れと全く一致しているとはいえ
ない。Conventionally, when visualizing the fluid flow inside a high-speed rotary blade or between the blades, a cross-sectional model of the blade is created, placed in a wind tunnel or shock wave tube, etc., and visualized as if the blade were rotating. Fluid is flowed at a given pressure 7 and the flow is optically observed. However, in this observation method, since the blade is observed from the side, the flow of fluid cannot be observed from the front, and the behavior of the fluid over the entire surface of the blade cannot be observed. Furthermore, the observed model is stationary and does not necessarily match the flow at the actual blade.
本発明の目的は、このような従来の問題点を解決するた
め、実際に用いることができる高速回転体、又は、それ
と同等の形状の翼モデルを回転さ亡だ１Ｌ高速回転体の
正面から回転体の内部や翼間の流体の挙動を観察しイｑ
る高速回転体／ユリーレン観察装置を提供することにあ
る。The purpose of the present invention is to solve such conventional problems by rotating a high-speed rotating body that can actually be used, or a wing model having an equivalent shape. Observe the behavior of fluid inside the body and between the wings.
An object of the present invention is to provide a high-speed rotating object/Yurilen observation device.
本発明でＣ」１、光源からの光を、反射透過手段の光遮
蔽部材により回転体の回転軸心に清って回転体の正面に
ほぼ垂直に投射し、その投射光を、回転体の背面側に設
けた凹面鏡で反射させる。反射透過手段は、その光遮蔽
部拐が凹面鏡の焦点位置で凹面鏡からの反射光の一部又
は全部を遮蔽するように配置させる。反射透過手段から
の出射光を、回転体の回転軸心とその光軸が一致してお
り、しかも回転体の回転速度と同期した回転速度で回転
している台形プリズムのような回転プリズムに入射し、
そのプリズムの射出光により回転体及びその内部、又は
翼間の流体の挙動を観察する。In the present invention, in C'1, the light from the light source is projected almost perpendicularly to the front surface of the rotating body by directing the light from the light source to the rotational axis of the rotating body by the light shielding member of the reflection-transmitting means, and the projected light is directed to the front surface of the rotating body. It is reflected by a concave mirror installed on the back side. The reflection-transmission means is arranged such that its light shielding portion blocks part or all of the reflected light from the concave mirror at the focal point of the concave mirror. The light emitted from the reflection/transmission means is incident on a rotating prism such as a trapezoidal prism whose optical axis coincides with the rotational axis of a rotating body and which rotates at a rotational speed that is synchronized with the rotational speed of the rotating body. death,
The behavior of the rotating body and the fluid inside it or between the blades is observed using the light emitted from the prism.
以下、図面に基ついて本発明の詳細な説明する。Hereinafter, the present invention will be described in detail with reference to the drawings.
第１図（Ａ）は本発明の一実施例を示す高速回転体／ユ
リーレン観察装置の正面図、第】図（Ｂ）はその平面図
である。１は同期モータてあり、その回転をベルト２を
介して回転軸３に伝達する。回転軸３を軸受４及び５で
軸支し、回転軸３．０一方の端部に、被観察回転体６が
数例けられるようにする。FIG. 1(A) is a front view of a high-speed rotating body/Yurilen observation device showing one embodiment of the present invention, and FIG. 1(B) is a plan view thereof. A synchronous motor 1 transmits its rotation to a rotating shaft 3 via a belt 2. The rotating shaft 3 is supported by bearings 4 and 5, and several rotating bodies 6 to be observed are mounted on one end of the rotating shaft 3.0.
本例では、透明ガラス板６Ａに羽根車６Ｂを取例けて被
観察回転体６としている。７はガラス板６Ａの背面に対
向して設けた凹面鏡、８は反射透過手段であり、本実施
例では、プリズム８Ａ及び８Ｂを接合させ、その接合面
のほぼ中央に光遮蔽部材と；−ての円板形状の／ｉ＃、
９を設けている。反射透過手段８は、凹面鏡７の焦点が
鏡９のほぼ中央部に位置するよう如装置する。又、光ｆ
ｊ＄１０からの光がレンズＩＯＡを介して鏡９上で焦点
を結ぶようにする。ここで、光の鎗９に対する入射角は
４５度である。レンズＩＯＡから伝播される光は、鐘９
で反射され、回転体６０回転軸心に沿って回転体６にほ
ぼ垂直に投射され、更に凹面鏡７で反射される。従って
、回転体６近傍の気体が一様であシ、光が屈折されなけ
れば、凹面鏡７がらの反射光は鏡９で全て遮蔽される。In this example, an impeller 6B is placed on a transparent glass plate 6A to serve as the rotating body 6 to be observed. 7 is a concave mirror provided opposite to the back surface of the glass plate 6A, and 8 is a reflection/transmission means. In this embodiment, prisms 8A and 8B are joined, and a light shielding member is provided approximately in the center of the joining surface. disk-shaped /i#,
There are 9. The reflection/transmission means 8 is arranged so that the focal point of the concave mirror 7 is located approximately at the center of the mirror 9. Also, light f
The light from j$10 is focused on mirror 9 via lens IOA. Here, the angle of incidence of the light on the spear 9 is 45 degrees. The light propagated from the lens IOA is
The light is reflected by the rotating body 60, projected almost perpendicularly to the rotating body 6 along the axis of rotation of the rotating body 60, and further reflected by the concave mirror 7. Therefore, if the gas near the rotating body 6 is uniform and the light is not refracted, all of the reflected light from the concave mirror 7 will be blocked by the mirror 9.
１１け同様にその光軸を回転体６の回転軸心と一致させ
たレンズ、１２け同様にその光軸を回転軸心と一致させ
た回転プリズムとしての台形プリズムであシ、ベルト１
３を介して同期モータＩ４にょ多回転される。回転プリ
ズム１２０回転速度が、回転体６０回転速度のイとなる
ように、同期モータ１４を同期モータｌと接続して同期
をとる。１５け回転プリズム１２からの出射光にょシ回
転体６の静止画像を再生する撮影装置である。Like item 11, it is a lens whose optical axis is aligned with the rotational axis of the rotating body 6, a trapezoidal prism as a rotating prism whose optical axis is aligned with the rotational axis like item 12, and belt 1.
3, the motor is rotated many times by the synchronous motor I4. The synchronous motor 14 is connected to the synchronous motor l for synchronization so that the rotational speed of the rotating prism 120 is equal to the rotational speed of the rotating body 60. This photographing device reproduces a still image of a rotating body 6 using light emitted from a 15-digit rotating prism 12.
このように構成した高速回転体シュリーレン観察装置に
おいては、光源１０からの光を、・・レンズ１０Ａ及び
反射透過手段８を介して、回転体６０回転軸心に沿って
、高速回転している回転体６にほぼ垂直に投射する。回
転体６を介して凹面鏡７から反射する反射光を、回転軸
心に沿って反射透過手段８及びレンズ１１を介して、回
転体６のイの回転速度で回転している台形プリズム１２
に入射するようにする。プリズム１２０入射面１２Ａに
入射した光は反射面１２Ｂで反射されて射出面１２Ｃか
ら射出する。その射出光を撮影装置１５に入射させて回
転体６の静止画像を再生する。In the high-speed rotating object Schlieren observation device configured in this way, light from the light source 10 is transmitted through the lens 10A and the reflection/transmission means 8 to the rotating object rotating at high speed along the rotation axis of the rotating object 60. It is projected almost perpendicularly to the body 6. The reflected light reflected from the concave mirror 7 via the rotating body 6 is passed through the reflection/transmission means 8 and the lens 11 along the axis of rotation to the trapezoidal prism 12 rotating at the rotational speed of the rotating body 6.
Make it incident on . The light incident on the entrance surface 12A of the prism 120 is reflected by the reflection surface 12B and exits from the exit surface 12C. The emitted light is made to enter the photographing device 15 to reproduce a still image of the rotating body 6.
第２図（へ及び（Ｂ）を参照して、かかる装置により回
転体６の静止画像が観察される原理を説明する。The principle by which a still image of the rotating body 6 is observed using such an apparatus will be explained with reference to FIGS.
第２図（〜において、回転体６を模式的に矢印２０とし
、一方の端部を２０Ｂ１他方の端部を２０Ｗとする。矢
印２００反射光は端部２ＯＢを上方にしたまま反射透過
手段８、レンズ１１を介して台形プリズム１２０入射面
１２Ａに入射される。プリズム１２の反射面１２Ｂでは
、端部２０Ｂが図においで左方に、端部２０Ｗが右方に
位置する。In Fig. 2 (-), the rotating body 6 is schematically indicated by an arrow 20, one end of which is 20B, and the other end of which is 20W. , is incident on the entrance surface 12A of the trapezoidal prism 120 via the lens 11. On the reflective surface 12B of the prism 12, the end 20B is located on the left in the figure, and the end 20W is located on the right.
反射面１２Ｂからの反射光が図示の点線のように射出面
１２Ｃに達し、射出面１２Ｃでは、矢印の向きが反転さ
れて、矢印の端部２０Ｂが下方に端部ＺＯＷが上方に位
置した偉となる。The reflected light from the reflective surface 12B reaches the exit surface 12C as indicated by the dotted line in the figure, and at the exit surface 12C, the direction of the arrow is reversed, and the end 20B of the arrow is located downward and the end ZOW is located upward. becomes.
第２図（勾の位置から矢印２０を１８０度回転して第２
図（Ｂ）のようにする。このとき、台形プリズム１２を
同方向に９０度だけ回転させる。すなわち、台形プリズ
ムでは、入射光がプリズム底部の反射面１２Ｂで一回反
射してから出射されるので、回転速度があたかも倍速さ
れる。従って、回転体６としての矢印２００回転速度の
Ｈの速度で台形プリズム１２を回転させる。プリズム１
２の入射面１２Ａ上に形成される像は、矢印２０と同一
の向きであυ、図示のように、反射面１２Ｂを介して射
出面１２Ｃ上に形成される像も入射面＋２Ａ上の像と同
一の方向となる。すなわち、端部２０Ｗが上方に、端部
２ＯＢが下方に位置する。Figure 2 (Rotate arrow 20 180 degrees from the slope position to
Do as shown in figure (B). At this time, the trapezoidal prism 12 is rotated by 90 degrees in the same direction. That is, in the trapezoidal prism, since the incident light is reflected once on the reflective surface 12B at the bottom of the prism and then emitted, the rotational speed is doubled. Therefore, the trapezoidal prism 12 is rotated at a speed H which is the rotational speed of the arrow 200 as the rotating body 6. prism 1
The image formed on the entrance surface 12A of 2 is in the same direction as the arrow 20 υ, and as shown in the figure, the image formed on the exit surface 12C via the reflective surface 12B is also the image on the entrance surface +2A. The direction is the same as that of That is, the end 20W is located above and the end 2OB is located below.
とのように、回転体６０回転速度の％で台形プリズム１
２を同一の方向に回転させ、台形プリズム１２の射出面
１２Ｃからの射出光を観察すれば、常に静止しだ画傷が
得られる。and so on, the trapezoidal prism 1 at 60% of the rotational speed of the rotating body
2 are rotated in the same direction and the emitted light from the exit surface 12C of the trapezoidal prism 12 is observed, it is always stationary and an image scratch is obtained.
台形プリズム１２を屋根型プリズム等の他の形態のプリ
ズムとし、その回転速度を被観察回転体に対して適切な
速度で同期させても、上述したと同様に静止画像を得る
ことができる。Even if the trapezoidal prism 12 is a prism of another type, such as a roof-shaped prism, and its rotational speed is synchronized with the rotational object to be observed at an appropriate speed, a still image can be obtained in the same manner as described above.
而して、第１図（Ａ）及び（Ｂ）に示す装置において、
羽根車６Ｂの周囲の流体に密度勾配が生じると、凹面鏡
７からの反射光のある部分が鏡９により速ぎられ、ある
部分が鏡９に遣ぎられないようになシ、回転プリズム１
２の射出面１２Ｃから射出する光によυ得られる像には
、流体の密度勾配に応じた明暗が生ずる。従って、かか
る明暗によシ羽根車の周囲の流体の挙動を静止状態で知
ることができる。Thus, in the apparatus shown in FIGS. 1(A) and (B),
When a density gradient occurs in the fluid around the impeller 6B, some portion of the reflected light from the concave mirror 7 is sped up by the mirror 9, and some portion is prevented from being sent to the mirror 9.
In the image obtained by the light emitted from the exit surface 12C of No. 2, brightness and darkness occur depending on the density gradient of the fluid. Therefore, the behavior of the fluid around the impeller can be known in a stationary state based on such brightness and darkness.
なお、実物のタービン翼やファンを回転軸３に以上説明
したように、本発明によれば、高速回転している被観察
回転体の正面から光を投射し、回転体の背面に対向して
設けた凹面鏡でその投射光を反射させ、凹面鏡の焦点位
置で凹面鏡からの反射光の一部又は全部を光速蔽部材に
より速えぎり、このようにして一部が速えぎられた光を
、回転体の回転軸心と光軸を合わせて配置され、回転体
と同期した回転速度で回転する回転プリズムに入射（−
１そのプリズムからの出射光により回転体静止像を得て
回転体の周囲の流体の挙動を観察するようにしたので、
被観察回転体を回転させたまま、その正面からかかる流
体の挙動が観察できる。As described above, according to the present invention, light is projected from the front of the rotating body to be observed rotating at high speed, and light is projected from the front of the rotating body to be observed while rotating at a high speed. The projected light is reflected by a concave mirror provided, and part or all of the reflected light from the concave mirror is quickly clipped by a light speed shielding member at the focal position of the concave mirror, and the light partially clipped in this way is The light incident on a rotating prism (-
1. We used the light emitted from the prism to obtain a static image of the rotating body and observe the behavior of the fluid around the rotating body.
The behavior of the fluid can be observed from the front of the object of rotation while it is being rotated.
ｆｉＲ＋図（勾は本発明の一実施例を示す正面図、第１
図（Ｂ）はその平面図、第２図（Ａ）及び第２図（Ｂ）
は本実施例によシ静止画像が得られる原理を示す図であ
る。
１１１４・・・モータ、 ２・、１３・・・ベルト
、３・・・回転軸、 ４％５”・軸受、６・
・・高速回転体、 ７・・・凹面鏡、８・・・反
射透過手段、 ８Ａ、８Ｂ・・・プリズノ８．９・
・・鏡、 １ｏ・・・光源、１０Ａ、１
１・・・レンズ、１２・・・回転プリズム、１５・・・
カメラ。
代理人 鵜 沼 辰 之
（ほか２名）fiR+ figure (the slope is a front view showing one embodiment of the present invention, the first
Figure (B) is its plan view, Figure 2 (A) and Figure 2 (B)
FIG. 2 is a diagram showing the principle of obtaining a still image according to this embodiment. 1114...Motor, 2., 13...Belt, 3...Rotating shaft, 4%5"・Bearing, 6.
...High speed rotating body, 7... Concave mirror, 8... Reflection and transmission means, 8A, 8B... Prison 8.9.
...Mirror, 1o...Light source, 10A, 1
1... Lens, 12... Rotating prism, 15...
camera. Agent Tatsuyuki Unuma (and 2 others)
Claims (1)
れ、該投射光を反射させる凹面鏡と、を榊：Ｉ！：ｓ″
材十有ル昏前記被観察回転体の回転軸心上で、前記光源
からの光を、前記凹面鏡に向けて前記回転軸心に沿って
反射させて前記被観察回転体を介して前記凹面鏡に投射
させる光速蔽部材を有し、前記凹面鏡からの反射光が前
記回転軸心に沿って入射ｌ〜、前記光遮蔽部材が、前■
Ｃ凹面鐘の焦点位置でその入射光の一部又は全部を遮蔽
し、その一部を湾蔽された前記反射光が前記回転軸心に
沿って射出されるようにした反射透過手段と、前記回転
軸心に光軸を合わせて配設され、前記反射透過手段から
の出射光が入射し、前記被観察回転体の回転速度と同期
した速度で回転するとともに、その入射光を前記光軸に
沿って出射させ、該出射光により前記被高速回転体の静
止画像を得、その回転体の周囲の気体の挙動を観察し得
るようにした回転プリズムとを具備したことを特徴とす
る高速回転体シュリーレン観察装置。 （２、特許請求の範囲第１項記載の装置において、前記
回転プリズムを台形プリズムとなし、前記台形プリズム
を前記被観察回転体のＨの速度で回転させるようにした
ことを特徴とする高速回転体シュリーレン観察装置。[Claims] +11 Light from a light source is projected through a rotating body to be observed, and a concave mirror that reflects the projected light is defined as: Sakaki: I! :s''
On the rotation axis of the observed rotating body, the light from the light source is reflected along the rotation axis towards the concave mirror, and is directed to the concave mirror via the observed rotating body. The light shielding member has a light velocity shielding member for projecting light, and the reflected light from the concave mirror is incident along the rotation axis l~, and the light shielding member
C. A reflective/transmissive means for blocking part or all of the incident light at the focal position of the concave bell so that the partially shielded reflected light is emitted along the rotation axis; The optical axis is aligned with the rotational axis, and the emitted light from the reflective/transmissive means enters, rotates at a speed synchronized with the rotational speed of the observed rotating body, and directs the incident light to the optical axis. a rotating prism that emits light along the direction of the rotating body, and uses the emitted light to obtain a still image of the high-speed rotating body to observe the behavior of gas around the rotating body. Schlieren observation device. (2. The apparatus according to claim 1, wherein the rotating prism is a trapezoidal prism, and the trapezoidal prism is rotated at a speed H of the observed rotating body. Body Schlieren observation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57116421A JPS597334A (en) | 1982-07-05 | 1982-07-05 | Schlieran observation device for high-speed rotating body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57116421A JPS597334A (en) | 1982-07-05 | 1982-07-05 | Schlieran observation device for high-speed rotating body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS597334A true JPS597334A (en) | 1984-01-14 |
| JPS6218897B2 JPS6218897B2 (en) | 1987-04-24 |
Family
ID=14686662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57116421A Granted JPS597334A (en) | 1982-07-05 | 1982-07-05 | Schlieran observation device for high-speed rotating body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS597334A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7367489B2 (en) | 2019-11-27 | 2023-10-24 | セイコーエプソン株式会社 | recording device |
| JP7417197B2 (en) | 2020-03-26 | 2024-01-18 | セイコーエプソン株式会社 | recording device |
-
1982
- 1982-07-05 JP JP57116421A patent/JPS597334A/en active Granted
Non-Patent Citations (2)
| Title |
|---|
| MACHINE DESIGN * |
| OPTICAL SHOP TESTING * |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6218897B2 (en) | 1987-04-24 |
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