JPH074335A - Water turbine runner - Google Patents
Water turbine runnerInfo
- Publication number
- JPH074335A JPH074335A JP5148883A JP14888393A JPH074335A JP H074335 A JPH074335 A JP H074335A JP 5148883 A JP5148883 A JP 5148883A JP 14888393 A JP14888393 A JP 14888393A JP H074335 A JPH074335 A JP H074335A
- Authority
- JP
- Japan
- Prior art keywords
- seal member
- water turbine
- turbine runner
- runner
- casting
- 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
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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は水力発電機に組み込まれ
る水車ランナに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water turbine runner incorporated in a hydroelectric generator.
【０００２】[0002]
【従来の技術】鋳造姿勢の問題で押湯を設置出来ない場
合、肉厚部に対しては冷し金を当てることにより、見か
けの体積を小さくして、引け巣発生を防止することが一
般に行われる。あるいは特開昭63−180355号公報に示す
ように、内部に特殊な冷却法を適用することもあった。2. Description of the Related Art When a feeder cannot be installed due to a casting posture problem, it is generally possible to prevent the occurrence of shrinkage cavities by applying a chill to a thick portion to reduce the apparent volume. Done. Alternatively, as shown in JP-A-63-180355, a special cooling method may be applied inside.
【０００３】[0003]
【発明が解決しようとする課題】(1) 数多くの冷し金を
鋳型に埋め込むのは多大な工数がかかる。また冷し金間
の割れ防止のため、冷し金の大きさが制約されるため、
充分な冷却効果が得られない問題があった。本発明によ
れば大きなシール部材を用いることにより、造型工数が
短縮でき、冷却効果も大きい。[Problems to be Solved by the Invention] (1) It takes a lot of man-hours to embed a large number of chills in a mold. Also, because the size of the chill is restricted to prevent cracks between the chills,
There was a problem that a sufficient cooling effect could not be obtained. According to the present invention, by using a large seal member, the number of molding processes can be shortened and the cooling effect is large.
【０００４】(2) 鋳ぐるみシール部材を最終製品表面に
出す方法と内部に鋳ぐるむ方法があるが、どちらも大き
な冷却効果が得られる。(2) There is a method of putting the cast-in-girth seal member on the surface of the final product and a method of casting the cast-in-girth seal member inside, but both have a great cooling effect.
【０００５】(3) シール部材は一体リングまたは分割品
が使用できる。(3) As the sealing member, an integral ring or a divided product can be used.
【０００６】(4) 鋳造品本体を安価な炭素鋼鋳鋼とし、
シール部材をステンレス鋼とすることも一般に行われて
いるが、このためには精密に機械加工した部材を焼きば
め、または冷しばめしなければならない。(4) The cast product body is made of inexpensive carbon steel cast steel,
It is also common practice to use stainless steel for the sealing member, which requires the precision machined member to be shrink-fitted or cold-fitted.
【０００７】[0007]
【課題を解決するための手段】鋼板または鋳造品にて製
作したシールリングを鋳型の中に設置する。鋳ぐるみ面
は機械加工面またはグラインダ加工面などの清浄な面と
する。[Means for Solving the Problems] A seal ring made of a steel plate or a cast product is installed in a mold. The cast face should be a clean surface such as a machined surface or a grinder processed surface.
【０００８】同材質のシール部材を使用する場合は、熱
処理は全く問題なく施工できる。炭素鋼とステンレス鋼
を組み合わせた場合は、ステンレス鋼の耐食性を多少劣
化させても、本体の熱処理条件に合わせる。When the seal member made of the same material is used, the heat treatment can be performed without any problem. When carbon steel and stainless steel are combined, even if the corrosion resistance of stainless steel is slightly deteriorated, it is adjusted to the heat treatment conditions of the main body.
【０００９】境界は融合することなく、また熱処理によ
り隙間があくこともあるので、シール溶接により表面を
塞ぐことができる。Since the boundaries are not fused and a gap may be formed by heat treatment, the surface can be closed by seal welding.
【００１０】[0010]
【作用】大きなシール部材を鋳ぐるむことにより、冷し
金としての効果が得られ、引け巣を防止できる。By casting a large sealing member, the effect as a chill can be obtained and shrinkage cavities can be prevented.
【００１１】[0011]
【実施例】以下、本発明の一実施例を図により説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１２】図１は水車ランナ鋳造品の鋳型の断面を示
す。FIG. 1 shows a cross section of a mold of a water turbine runner casting.
【００１３】シール部材２は主型１を造型後設置する。The seal member 2 is installed after molding the main mold 1.
【００１４】図２は従来品のシール部断面の凝固シミュ
レーションを示す。本凝固シミュレーションは温度勾配
と冷却速度を考慮したパラメータにより引け巣発生部位
を予測したものである。肉厚中心部の斜線部に引け巣発
生が予測される。FIG. 2 shows a solidification simulation of the cross section of the conventional seal portion. In this solidification simulation, the shrinkage cavity generation site is predicted by parameters considering the temperature gradient and cooling rate. Shrinkage cavities are predicted to occur in the shaded area at the center of the wall thickness.
【００１５】図３は本発明によるシール部鋳ぐるみした
ときの凝固シミュレーションを示す。FIG. 3 shows a solidification simulation when the seal portion of the present invention is cast.
【００１６】[0016]
【発明の効果】本発明によれば、安価に製造可能とな
り、引け巣の発生がない。According to the present invention, it can be manufactured at a low cost and shrinkage cavities do not occur.
【図１】水車ランナ鋳造品の鋳型の断面図。FIG. 1 is a sectional view of a mold of a water turbine runner casting.
【図２】従来品のシール部断面の凝固シミュレーション
を示す説明図。FIG. 2 is an explanatory diagram showing a solidification simulation of a cross section of a conventional seal portion.
【図３】本発明によるシール部鋳ぐるみしたときの凝固
シミュレーションを示す説明図。FIG. 3 is an explanatory diagram showing a solidification simulation when a seal portion is cast-up according to the present invention.
１…主型、２…鋳ぐるみシール部材、３…水車ランナ鋳
造品、４…鋳ぐるみシール部材、５…引け巣。DESCRIPTION OF SYMBOLS 1 ... Main mold, 2 ... Casting seal member, 3 ... Water turbine runner casting, 4 ... Casting seal member, 5 ... Shrinkage cavity.
Claims (1)
ール部材を鋳ぐるみ構造としたことを特徴とする水車ラ
ンナ。1. A water turbine runner, characterized in that, in the seal portion, a seal member manufactured in advance has a cast-in-girth structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5148883A JPH074335A (en) | 1993-06-21 | 1993-06-21 | Water turbine runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5148883A JPH074335A (en) | 1993-06-21 | 1993-06-21 | Water turbine runner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH074335A true JPH074335A (en) | 1995-01-10 |
Family
ID=15462848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5148883A Pending JPH074335A (en) | 1993-06-21 | 1993-06-21 | Water turbine runner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074335A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011513071A (en) * | 2008-03-06 | 2011-04-28 | カミート アーベー | Composite casting method for monolithic casting tool |
-
1993
- 1993-06-21 JP JP5148883A patent/JPH074335A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011513071A (en) * | 2008-03-06 | 2011-04-28 | カミート アーベー | Composite casting method for monolithic casting tool |
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