JPH09250440A - Water turbine stay vanes - Google Patents
Water turbine stay vanesInfo
- Publication number
- JPH09250440A JPH09250440A JP8060539A JP6053996A JPH09250440A JP H09250440 A JPH09250440 A JP H09250440A JP 8060539 A JP8060539 A JP 8060539A JP 6053996 A JP6053996 A JP 6053996A JP H09250440 A JPH09250440 A JP H09250440A
- Authority
- JP
- Japan
- Prior art keywords
- main body
- rear edge
- edge portion
- stay vane
- edge part
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229920001875 Ebonite Polymers 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000004576 sand Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 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 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Hydraulic Turbines (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は水車に係り、特に、
低価格で高効率の水車を提供するための水車のステーベ
ーンに関する。TECHNICAL FIELD The present invention relates to a water turbine, and in particular,
The present invention relates to a water turbine stay vane for providing a low cost and high efficiency water turbine.
【０００２】[0002]
【従来の技術】従来、水車のステーベーンはケーシング
が水圧力により破壊しないための強度部材としての機能
と、ケーシングからの水流をガイドベーンに導く機能が
ある。一方、水のエネルギを利用して発電する水車の観
点から見ると、ステーベーンによって生じる水力損失は
なるべく小さくしなければならない。そのためには、ス
テーベーンの断面形状は水流に対し前縁部分と後縁部分
の翼厚みが薄い流線形が望ましいが、製作コストを低減
するため、翼形を図３に示すような直線からなる多角形
に構成している。その一例として、文献「ハイドロター
ビン」７１ページ、日本工業出版がある。また、この方
法をガイドベーンに適用した例として特開昭54−81431
号公報がある。しかし、水力損失を低減するには、多角
形の数をなるべく多くし、翼の表面がなめらかになるよ
うにする必要があるが、そのようにすると製作コストが
大きくなるという問題がある。2. Description of the Related Art Conventionally, a stay vane of a water turbine has a function as a strength member for preventing the casing from being broken by water pressure and a function for guiding a water flow from the casing to a guide vane. On the other hand, from the viewpoint of a water turbine that uses the energy of water to generate electricity, the hydraulic loss caused by the stay vanes must be minimized. For that purpose, the cross-sectional shape of the stay vane is preferably a streamline with a thin blade thickness at the leading edge portion and the trailing edge portion with respect to the water flow, but in order to reduce the manufacturing cost, the blade shape is made up of straight lines as shown in FIG. It has a rectangular shape. One example is the "Hydro Turbine" page 71, Nihon Kogyo Publishing. As an example of applying this method to a guide vane, Japanese Patent Laid-Open No. 54-81431
There is an official gazette. However, in order to reduce the hydraulic power loss, it is necessary to increase the number of polygons as much as possible and to make the surface of the blade smooth, but this causes a problem that the manufacturing cost increases.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、製作
コストが小さく、水力損失も小さい水車のステーベーン
を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a stay vane for a water turbine which has a low manufacturing cost and a small hydraulic loss.
【０００４】さらに、水力機械に特有のキャビテーショ
ンや、土砂磨耗に対する耐久性も向上した水車のステー
ベーンを提供することにある。Another object of the present invention is to provide a stay vane for a water turbine, which has improved durability against cavitation peculiar to hydraulic machines and earth and sand abrasion.
【０００５】そこで本発明は、上記課題を達成するため
の水車のステーベーンを提供することを目的とする。こ
こで、低価格・高効率水車のステーベーンに要求される
機能，課題をまとめると以下の項目に集約される。Therefore, an object of the present invention is to provide a stay vane of a water turbine for achieving the above object. Here, the functions and issues required for low cost and high efficiency turbine stay vanes are summarized in the following items.
【０００６】（１）製作が容易である。(1) Manufacture is easy.
【０００７】（２）水力損失が小さくなるように、滑ら
かな翼形状である。(2) The blade shape is smooth so that the hydraulic power loss is reduced.
【０００８】（３）キャビテーションエロージョン，土
砂磨耗が特に大きい前縁・後縁部分が強固である。(3) Cavitation erosion and earth and sand wear are particularly large, and the leading and trailing edges are strong.
【０００９】[0009]
【課題を解決するための手段】本発明の水車のステーベ
ーンは、後縁部分と本体、または前縁部分と本体、もし
くは前縁部分，後縁部分，本体に分けて構成されてい
る。そして、各々別々に製作し、それらを接合して一体
のステーベーンとしたものである。A stay vane of a water turbine according to the present invention is constructed by being divided into a trailing edge portion and a main body, a leading edge portion and a main body, or a leading edge portion, a trailing edge portion and a main body. Then, each is separately manufactured, and these are joined to form an integral stay vane.
【００１０】本発明では、ステーベーンを後縁部分と本
体、または前縁部分と本体、もしくは前縁部分，後縁部
分，本体に分けて構成したので、本体部分に強度を持た
せることにより前縁部分，後縁部分は一体成型できる材
質のものが使用できる。これにより加工工数を大幅に低
減でき製作コストを低減できる。According to the present invention, the stay vane is divided into the trailing edge portion and the main body, the leading edge portion and the main body, or the leading edge portion, the trailing edge portion, and the main body. The part and the trailing edge part can be made of a material that can be integrally molded. As a result, the number of processing steps can be significantly reduced and the manufacturing cost can be reduced.
【００１１】また、前縁部分，後縁部分は一体成型でき
る材質のものが使用できるので、製作コストを上げずに
前・後縁部分を水流に対し滑らかに変化する形状にする
ことができる。したがって、水流を乱れなくガイドベー
ンに導くことができ水力損失を低減できる。Further, since the front edge portion and the rear edge portion can be made of a material which can be integrally molded, the front and rear edge portions can be formed into a shape that smoothly changes with respect to the water flow without increasing the manufacturing cost. Therefore, the water flow can be guided to the guide vanes without disturbance, and the hydraulic loss can be reduced.
【００１２】さらに、前縁部分，後縁部分は強度を持た
せる必要がないため、キャビテーションエロージョン，
土砂磨耗に対し耐久性のある硬質ゴムで構成することが
できる。したがって、水車の耐久性を向上できる。Further, since it is not necessary to give strength to the leading edge portion and the trailing edge portion, cavitation erosion,
It can be made of hard rubber that is durable against earth and sand abrasion. Therefore, the durability of the water turbine can be improved.
【００１３】[0013]
【発明の実施の形態】本発明の水車のステーベーンは、
後縁部分と本体、または前縁部分と本体、もしくは前縁
部分，後縁部分，本体に分けて構成されている。そし
て、各々別々に製作し、それらを接合して一体のステー
ベーンとしたものである。BEST MODE FOR CARRYING OUT THE INVENTION A stay vane for a water turbine according to the present invention is
The rear edge portion and the main body, the front edge portion and the main body, or the front edge portion, the rear edge portion, and the main body are configured separately. Then, each is separately manufactured, and these are joined to form an integral stay vane.
【００１４】以下、図面を用いて本発明の実施例を説明
する。図１は本発明の水車のステーベーンの翼断面を含
む斜視図である。全体を２で示すステーベーンは、本体
部分２−１と後縁部分２−２で構成されている。そし
て、接合面５で接合されて一体のステーベーンとなって
いる。強度は本体部分２−１で受け持っているため、後
縁部分２−２は硬質ゴムで一体成型したものであり、水
流を乱れなくガイドベーンに導くために、形状が滑らか
に変化した流線形になっている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view including a blade cross section of a stay vane of a water turbine of the present invention. The stay vane, generally designated by 2, is composed of a body portion 2-1 and a trailing edge portion 2-2. Then, they are joined at the joining surface 5 to form an integral stay vane. Since the main body part 2-1 takes charge of the strength, the trailing edge part 2-2 is integrally molded with hard rubber. In order to guide the water flow to the guide vanes without disturbance, the shape of the streamlined shape changes smoothly. Has become.
【００１５】図２は本発明のステーベーンを取り付けた
水車の断面図である。ステーベーン２には本体部分２−
１と後縁部分２−２を接合した接合面５が示されてい
る。FIG. 2 is a sectional view of a water turbine equipped with the stay vanes of the present invention. The main body part 2-for the stay vane 2
A joining surface 5 is shown in which 1 and the trailing edge portion 2-2 are joined.
【００１６】図４は本発明のステーベーンの別の実施例
を示す斜視図である。ステーベーンは前縁部分２−３，
後縁部分２−２、本体に分けて構成されている。本体部
分２−１は円弧状に曲げられた形をしている。そして、
前縁部分２−３，後縁部分２−２は硬質ゴムで一体成型
したものであり、前縁部分，後縁部分，本体部分を合わ
せた全体形状が流線形に構成されている。FIG. 4 is a perspective view showing another embodiment of the stay vane of the present invention. The stay vane has a front edge portion 2-3,
The trailing edge portion 2-2 is divided into a main body. The main body portion 2-1 has a curved shape. And
The front edge portion 2-3 and the rear edge portion 2-2 are integrally molded of hard rubber, and the overall shape including the front edge portion, the rear edge portion, and the main body portion is streamlined.
【００１７】このような実施例にすることにより、以下
のような効果を奏することができる。すなわち、 （１）ステーベーン断面形状の変化が大きい前・後縁部
分を一体成型できる材質を用いることができるので、加
工工数を大幅に低減でき製作コストを低減できる。With this embodiment, the following effects can be obtained. That is, (1) Since a material capable of integrally molding the front and rear edges of the stay vane whose cross-sectional shape changes greatly can be used, the number of processing steps can be significantly reduced and the manufacturing cost can be reduced.
【００１８】（２）前・後縁部分の断面形状を滑らかに
することができるので、水流を乱すことがなく水力損失
を低減でき、高効率水車を提供できる。(2) Since the cross-sectional shapes of the front and rear edges can be made smooth, the hydraulic loss can be reduced without disturbing the water flow, and a highly efficient turbine can be provided.
【００１９】（３）前・後縁部分は硬質ゴムで構成され
ているので、キャビテーションエロージョン，土砂磨耗
に対し耐久性が増し、信頼性の高い水車を提供できる。(3) Since the front and rear edges are made of hard rubber, durability against cavitation erosion and earth and sand abrasion increases, and a highly reliable water turbine can be provided.
【００２０】本実施例は、以上に図示した実施例に限定
されるものではなく、水車に取り付ける場合はステーベ
ーン本体部分２−１だけを最初に取り付け、後で前縁部
分２−３，後縁部分２−２を取り付けても良い。The present embodiment is not limited to the above-illustrated embodiment, and when it is attached to a water turbine, only the stay vane body portion 2-1 is attached first, and later the leading edge portion 2-3 and the trailing edge are attached. The part 2-2 may be attached.
【００２１】[0021]
【発明の効果】本発明の水車のステーベーンは、後縁部
分と本体、または前縁部分と本体、もしくは前縁部分，
後縁部分，本体に分けて構成されている。そして、本体
部分に強度を持たせているので前・後縁部分は一体成型
できる材質を用いることができる。したがって、加工工
数を大幅に低減でき製作コストを低減できる。According to the stay vane of the water turbine of the present invention, the trailing edge portion and the main body, the leading edge portion and the main body, or the leading edge portion,
It is composed of a trailing edge and a main body. Further, since the main body portion has strength, the front and rear edge portions can be made of a material that can be integrally molded. Therefore, the number of processing steps can be significantly reduced and the manufacturing cost can be reduced.
【００２２】一体成型を用いているので前・後縁部分の
断面形状を滑らかにすることができるので、水流を乱す
ことがなく水力損失を低減でき、高効率水車を提供でき
る。前・後縁部分は硬質ゴムで構成されているので、キ
ャビテーションエロージョン，土砂磨耗に対し耐久性が
増す。Since the integral molding is used, the cross-sectional shapes of the front and rear edges can be made smooth, so that the hydraulic loss can be reduced without disturbing the water flow, and a highly efficient water turbine can be provided. Since the front and rear edges are made of hard rubber, durability against cavitation erosion and earth and sand abrasion increases.
【図１】本発明の水車のステーベーンを示す斜視図。FIG. 1 is a perspective view showing a stay vane of a water turbine according to the present invention.
【図２】本発明のステーベーンを取り付けた水車の断面
図。FIG. 2 is a sectional view of a water turbine equipped with a stay vane of the present invention.
【図３】従来のステーベーンの図２のＩ−Ｉ相当部分の
断面図。FIG. 3 is a cross-sectional view of a portion corresponding to II of FIG. 2 of a conventional stay vane.
【図４】本発明の他の実施例を示す斜視図。FIG. 4 is a perspective view showing another embodiment of the present invention.
２…ステーベーン、２−１…ステーベーンの本体部分、
２−２…ステーベーンの後縁部分、５…接合面。2 ... Stay vane, 2-1 ... Main part of stay vane,
2-2 ... rear edge portion of stay vane, 5 ... joining surface.
フロントページの続き (72)発明者 原野 正実 茨城県日立市幸町三丁目１番１号 株式会 社日立製作所日立工場内Front Page Continuation (72) Inventor Masami Harano 3-1-1 Sachimachi, Hitachi City, Ibaraki Hitachi Ltd., Hitachi Works
Claims (3)
縁部分と本体部分に分割して製作し、それらを接合して
一体にしたことを特徴とする水車のステーベーン。1. A stay vane for a water turbine, characterized in that a stay vane is divided into a leading edge portion or a trailing edge portion and a main body portion for water flow, and these are joined together to be integrated.
部分，本体部分の三つに分割して製作し、それらを接合
して一体にしたことを特徴とする水車のステーベーン。2. A stay vane for a water turbine, characterized in that a stay vane is divided into three parts, a front edge part, a rear edge part, and a main body part, for water flow, and these are joined to be integrated.
など、本体部分と別の材質で構成した請求項１または２
に記載の水車のステーベーン。3. The rear edge portion and the front edge portion are made of a material different from that of the main body portion such as hard rubber.
Water vane stay vane described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8060539A JPH09250440A (en) | 1996-03-18 | 1996-03-18 | Water turbine stay vanes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8060539A JPH09250440A (en) | 1996-03-18 | 1996-03-18 | Water turbine stay vanes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09250440A true JPH09250440A (en) | 1997-09-22 |
Family
ID=13145209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8060539A Pending JPH09250440A (en) | 1996-03-18 | 1996-03-18 | Water turbine stay vanes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09250440A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106715891A (en) * | 2014-07-15 | 2017-05-24 | 阿尔斯通再生能源技术公司 | Apparatus and method for modifying a geometry of a turbine part |
-
1996
- 1996-03-18 JP JP8060539A patent/JPH09250440A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106715891A (en) * | 2014-07-15 | 2017-05-24 | 阿尔斯通再生能源技术公司 | Apparatus and method for modifying a geometry of a turbine part |
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