JPS60175774A - Manufacturing method of runner for francis turbine - Google Patents

Manufacturing method of runner for francis turbine

Info

Publication number
JPS60175774A
JPS60175774A JP59030879A JP3087984A JPS60175774A JP S60175774 A JPS60175774 A JP S60175774A JP 59030879 A JP59030879 A JP 59030879A JP 3087984 A JP3087984 A JP 3087984A JP S60175774 A JPS60175774 A JP S60175774A
Authority
JP
Japan
Prior art keywords
runner
crown
band
vane
manufacturing
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
Application number
JP59030879A
Other languages
Japanese (ja)
Inventor
Kiyoshi Yoshii
清 吉井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji Electric Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP59030879A priority Critical patent/JPS60175774A/en
Publication of JPS60175774A publication Critical patent/JPS60175774A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/12—Blades; Blade-carrying rotors
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Turbines (AREA)

Abstract

PURPOSE:To secure a highly accurate runner in an easy manner, by setting up plural pieces of a runner vane treated with casting and blade profiling in advance at the specified position each in equal parts and locking each of them thereto temporarily, while casting a runner crown and a runner band together with the runner vane. CONSTITUTION:In time of manufacturing a runner, first of all, plural pieces of a runner as a single body are cast in precision and simultaneously finished in a highly accurate manner. At this time, in addition to blade profiling, a groove in which a positioning lock ring 11a is fittable is machined at the same time. Next, these runner vanes 11 are lined up at the specified position in regular intervals, while the positioning lock ring 11a is fitted in the said groove at the band side, and another positioning lock ring 11b is also fitted in the said groove at the crown side. In succession, the crown side and the band side of the runner vane are projected into casting sand of a part commensurate to a runner crown 12 and a runner band 13, and the runner crown 12 and the runner band 13 are cast, then these runner vanes 11 are completely locked.

Description

【発明の詳細な説明】[Detailed description of the invention] 【発明の属する技術分野】[Technical field to which the invention pertains]

この発明はフランシス水車のランナ製作方ｎに関する。 This invention relates to a method for manufacturing a runner for a Francis turbine.

【従来技術とその問題点】[Prior art and its problems]

第１図はフランシス水車のランナの縦断面図で、１はラ
ンナベーンで複数個が等間隔に配置されており、−側は
ランナクラウン２に支持され、他側はランチバンド３に
支持されている。このような形状のフランシス形ランチ
は従来はランナベーン。 ランナクラウンおよびランナバンドの各コンポーネント
を同時にたとえばステンレス網などで一体鋳造して製作
されるのが通常である。しかしながら一体鋳造方法では
鋳造後のランナベーン変形が不可避であった。また、ラ
ンナベーン、ランナクラウンおよびランナバンドの各コ
ンポーネントを別個に鋳造製作した後、それぞれを溶接
して製作する方法も行われている。この製作方法では溶
接後の応力除去焼鈍によるランナベーンの変形が生じた
。一方、水車に要求される性能の大半はランナ、特にラ
ンナベーンの精度で決定されるのでランチは高度の仕上
精度が必要となる。このため前述した製作方法の場合に
は、後の変形を見込んであらかじめ余肉を付けて鋳造し
、仕上げ加工している。しかしながらランナベーンは複
雑な曲面をしており、かつランナクラウンとランナバン
ドが一体となっているため加工法の制約があり、加工に
多大な時間と労力を要するという欠点を生じた。Figure 1 is a longitudinal cross-sectional view of the runner of a Francis turbine. Numeral runner vanes 1 are arranged at equal intervals, and the - side is supported by the runner crown 2, and the other side is supported by the launch band 3. . Francis-shaped launches like this are conventionally called runner vanes. Usually, the runner crown and runner band components are manufactured by integrally casting, for example, stainless steel mesh, at the same time. However, with the monolithic casting method, deformation of the runner vane after casting was inevitable. Another method has also been used in which the runner vane, runner crown, and runner band components are separately cast and manufactured, and then each is welded. With this manufacturing method, deformation of the runner vane occurred due to stress relief annealing after welding. On the other hand, most of the performance required of a water turbine is determined by the precision of the runners, especially the runner vanes, so the launch requires a high degree of finishing precision. For this reason, in the case of the above-mentioned manufacturing method, in anticipation of later deformation, extra thickness is added in advance by casting, and finishing processing is performed. However, since the runner vane has a complicated curved surface and the runner crown and runner band are integrated, there are restrictions on the processing method, resulting in the disadvantage that processing requires a great deal of time and effort.

【発明の目的】[Purpose of the invention]

この発明は上述した欠点に鑑み、高精度のランナが得ら
れると同時にその製作期間を短縮し、製作コストの低減
がはかれるフランシス水車のランナ製作方法を提供する
ことを目的とする。SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, it is an object of the present invention to provide a method for manufacturing a runner for a Francis turbine, which allows a highly accurate runner to be obtained, shortens the manufacturing period, and reduces manufacturing costs.

【発明の要点】[Key points of the invention]

この発明によれば上記目的は予め鋳造ならびに翼面加工
された複数個のランナベーンを、所定の位置に等分装置
し、これらランナベーンのクラウン側およびバンド側を
それぞれ位置決め用の固定リングで仮固定し、しかるの
ちランナクラウンおよびランナバンドを前記ランナベー
ンのクラウン側およびバンド側と共に鋳造するランチ製
作方法によって達成される。According to the present invention, the above object is to divide a plurality of runner vanes whose blade surfaces have been cast and processed in advance into equal parts at predetermined positions, and temporarily fix the crown side and band side of these runner vanes with fixing rings for positioning, respectively. , and then the runner crown and runner band are cast together with the crown side and band side of the runner vane.

【発明の実施例】[Embodiments of the invention]

第２図はこの発明の一実施例であるフランシス水車のラ
ンナ製作方法により製作したフランシス形ランナの縦断
面図である。この製作方法は、まず、複数個のランナベ
ーン単体を精密鋳造したのちＭＣＩＩ械加工などの方法
で高精度に仕上げる。 この機械加工は翼面仕上げの外、後述する位置決め用の
固定リングを嵌入できる溝をも同時に加工する。次にこ
れらのランナベーン１１を、所定の位置に等間隔に並べ
、バンド側の前記溝に位置決め用の固定リングｌｌａを
嵌入し、溶接などの方法でランナベーンと固定し、クラ
ウン側の前記溝にも位置決め用固定リングＩｌｂを嵌入
し、同様に溶接等の方法で仮固定する。次にランナクラ
ウンおよびランナバンドに相当する部分の鋳砂型の中に
ランナベーン１１のクラウン側およびバンド側を突出さ
せてランチクラウン１２．ランナバンド１３を鋳造し、
ランナベーン１１を完全に固定させる。このような製作
方法でランナクラウン１２およびランナバンド１３を鋳
造するとき、熱によるランナベーン１１の変形が予想さ
れるが、ランナベーン１１に伝導される熱は、両端部分
に局部的であるので問題とならない。FIG. 2 is a longitudinal sectional view of a Francis type runner manufactured by a method for manufacturing a runner for a Francis turbine according to an embodiment of the present invention. In this manufacturing method, first, a plurality of individual runner vanes are precision cast, and then finished with high precision using a method such as MCII machining. This machining process not only finishes the blade surface, but also creates a groove into which a positioning fixing ring, which will be described later, can be inserted. Next, these runner vanes 11 are arranged at predetermined positions at equal intervals, a fixing ring lla for positioning is fitted into the groove on the band side, and fixed to the runner vane by a method such as welding, and the groove on the crown side is also fitted. The positioning fixing ring Ilb is inserted and temporarily fixed by a similar method such as welding. Next, the crown side and band side of the runner vane 11 are made to protrude into the casting sand mold at the portions corresponding to the runner crown and the runner band, and the launch crown 12. Casting the runner band 13,
The runner vane 11 is completely fixed. When casting the runner crown 12 and runner band 13 using this manufacturing method, deformation of the runner vane 11 due to heat is expected, but this does not pose a problem because the heat conducted to the runner vane 11 is localized to both ends. .

【発明の効果】【Effect of the invention】

この発明ではランナベーンは単体で鋳造されるので、余
肉は極めて少量にして高精度に加工でき、しかもランナ
ベーンを所定の位置に仮固定してランナクラウン、ラン
チバンドを鋳造するのでランナ製作期間が短くなり製作
コストも削減できる。In this invention, the runner vane is cast as a single unit, so it can be processed with a high degree of precision with a very small amount of excess metal.Moreover, the runner crown and launch band are cast after temporarily fixing the runner vane in a predetermined position, so the runner manufacturing period is shortened. Therefore, production costs can also be reduced.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来方法である一体鋳造により製作したフラン
シス水車のランナの縦断面図、第２図はこの発明の一実
施例であるフランシス水車のランナ製作方法により製作
したフランシス水車のランナの縦断面図である。 １１−　ランナベーン、　１１　ａ、　１１　ｂ−・固
定リング、１２−　ランナクラウン、１３−　ランナバ
ンド。 ） 第１図 第２図Figure 1 is a vertical cross-sectional view of a Francis turbine runner manufactured by integral casting, which is a conventional method, and Figure 2 is a vertical cross-section of a Francis turbine runner manufactured by a Francis turbine runner manufacturing method, which is an embodiment of the present invention. It is a diagram. 11-Runner vane, 11a, 11b-Fixing ring, 12-Runner crown, 13-Runner band. ) Figure 1 Figure 2

Claims (1)

【特許請求の範囲】[Claims] １）予め鋳造ならびに翼面加工された複数個のランナベ
ーンを所定の位置に等分装置し、これらランナベーンの
クラウン側およびバンド側をそれぞれ位置決め用の固定
リングで仮固定し、この状態でランナクラウンおよびラ
ンナバンドを前記ランナベーンのクラウン側およびバン
ド側と共に鋳造することを特徴とするフランシス水車の
ランチ製作方法。1) Divide a plurality of runner vanes, which have been previously cast and whose blade surfaces have been machined, into equal parts at predetermined positions, temporarily fix the crown side and band side of these runner vanes with fixing rings for positioning, and in this state, set the runner crown and A method for manufacturing a launch for a Francis water turbine, characterized in that a runner band is cast together with a crown side and a band side of the runner vane.
JP59030879A 1984-02-21 1984-02-21 Manufacturing method of runner for francis turbine Pending JPS60175774A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59030879A JPS60175774A (en) 1984-02-21 1984-02-21 Manufacturing method of runner for francis turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59030879A JPS60175774A (en) 1984-02-21 1984-02-21 Manufacturing method of runner for francis turbine

Publications (1)

Publication Number Publication Date
JPS60175774A true JPS60175774A (en) 1985-09-09

Family

ID=12316020

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59030879A Pending JPS60175774A (en) 1984-02-21 1984-02-21 Manufacturing method of runner for francis turbine

Country Status (1)

Country Link
JP (1) JPS60175774A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110206518A1 (en) * 2008-09-05 2011-08-25 Alstom Hydro France Francis-type runner for a hydraulic machine, hydraulic machine including such a runner, and method for assembling such a runner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110206518A1 (en) * 2008-09-05 2011-08-25 Alstom Hydro France Francis-type runner for a hydraulic machine, hydraulic machine including such a runner, and method for assembling such a runner
US9175662B2 (en) * 2008-09-05 2015-11-03 Alstom Renewable Technologies Francis-type runner for a hydraulic machine, hydraulic machine including such a runner, and method for assembling such a runner

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