CS271140B1 - Runner for francis turbines and centrifugal pumps - Google Patents
Runner for francis turbines and centrifugal pumps Download PDFInfo
- Publication number
- CS271140B1 CS271140B1 CS884819A CS481988A CS271140B1 CS 271140 B1 CS271140 B1 CS 271140B1 CS 884819 A CS884819 A CS 884819A CS 481988 A CS481988 A CS 481988A CS 271140 B1 CS271140 B1 CS 271140B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- parts
- impeller
- welding
- hub
- centrifugal pumps
- Prior art date
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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
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- Hydraulic Turbines (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
(57) Oběžné kolo aeatává z jednotlivých samostatně zhotovených stejných dílů, z nichž každý obsahuje kromě lopaty (1) i 8 ní související ěasti náboje (2) a věnce (3)f a tyto díly lze před jejich spojením (např. svařením nebo slepením ap.) dokonale opracovat.(57) The impeller is made up of individually manufactured equal parts, each containing, in addition to the bucket (1), 8 related hub parts (2) and collars (3) f, and these parts can be joined prior to joining (eg welding or gluing) and so on.
Vynález ee týká oběžného kola pro Pranoisovy turbíny a odstředivá čerpadla a řeěí ee jím provedení tohoto kola, umožňující uenadnit a zlevnit jeho výrobu·The present invention relates to an impeller for Pranois turbines and centrifugal pumps, and to the design of this impeller, which makes it easier and cheaper to manufacture.
Oběžná kola pro Franoisovy turbíny a odstředivá čerpadla se odlévají z oceli zpravidla vcelku nebo se odlijí jen náboj a věnec tohoto kola a mezi ně se přivaří vylisované lopaty z ocelového plechu· Pro dosažení požadované účinnosti přišluSného vodního stroje je ověem zapotřebí, aby průtočné mezilopatové kanály měly správný tvar, přesné rozměry, jakož i hladké stěny, a za tím účelem se obtékané plochy lopat, náboje a věnce oběžného kola obrábějí vesměs ručním broušením, což je zdlouhavá, namáhavá a zdraví škodlivá operace, jež v případě úzkých či nízkých mezilopatových kanálů není ani uskutečnitelná· U oběžných kol odlévaných vcelku je již sama výroba odlitku vzhledem ke složitosti formy, jader, vtokové soustavy atd· velmi náročná a vyžaduje téměř výlučně drahou ruční práci·The impellers for Franois turbines and centrifugal pumps are generally cast in steel or only the hub and the rim of the wheel are cast and welded sheet steel shovels are welded between them. correct shape, precise dimensions, as well as smooth walls, and to this end, the bypass surfaces of the shovels, hubs and impeller rim are machined by hand grinding, a lengthy, laborious and harmful operation that is not even feasible · For cast wheels impregnated, the production of the casting itself, due to the complexity of the mold, cores, gating system, etc. · is very demanding and requires almost exclusively expensive manual work ·
Zmíněné nevýhody se nevyskytují u oběžného kola podle vynálezu, jehož podstatou je, že Je složeno z jednotlivých dílů, z nichž každý je tvořen lopatou а в ní souvisejícími částmi náboje a věnce, přičemž díly jsou stejné a jsou mezi sebou spojeny svařením nebo slepením apod·These disadvantages do not occur with the impeller according to the invention, which consists in that it consists of individual parts, each consisting of a shovel and its associated hub and ring parts, the parts being the same and joined by welding or gluing, etc. ·
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS884819A CS271140B1 (en) | 1988-07-04 | 1988-07-04 | Runner for francis turbines and centrifugal pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS884819A CS271140B1 (en) | 1988-07-04 | 1988-07-04 | Runner for francis turbines and centrifugal pumps |
Publications (2)
Publication Number | Publication Date |
---|---|
CS481988A1 CS481988A1 (en) | 1990-01-12 |
CS271140B1 true CS271140B1 (en) | 1990-08-14 |
Family
ID=5391777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CS884819A CS271140B1 (en) | 1988-07-04 | 1988-07-04 | Runner for francis turbines and centrifugal pumps |
Country Status (1)
Country | Link |
---|---|
CS (1) | CS271140B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105209208A (en) * | 2013-02-20 | 2015-12-30 | 诺沃皮尼奥内股份有限公司 | Method for making an impeller from sector segments |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2935761B1 (en) * | 2008-09-05 | 2010-10-15 | Alstom Hydro France | FRANCIS TYPE WHEEL FOR A HYDRAULIC MACHINE, A HYDRAULIC MACHINE COMPRISING SUCH A WHEEL AND A METHOD OF ASSEMBLING SUCH A WHEEL |
-
1988
- 1988-07-04 CS CS884819A patent/CS271140B1/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105209208A (en) * | 2013-02-20 | 2015-12-30 | 诺沃皮尼奥内股份有限公司 | Method for making an impeller from sector segments |
EP2958701A1 (en) * | 2013-02-20 | 2015-12-30 | Nuovo Pignone S.r.l. | Method for making an impeller from sector segments |
US9945388B2 (en) | 2013-02-20 | 2018-04-17 | Nuovo Pignone Srl | Method for making an impeller from sector segments |
Also Published As
Publication number | Publication date |
---|---|
CS481988A1 (en) | 1990-01-12 |
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