DK156843B

DK156843B - CROSS-CURRENT WATER TURBINE

Info

Publication number: DK156843B
Application number: DK520181A
Authority: DK
Inventors: Joergen Krogsgaard
Original assignee: Joergen Krogsgaard
Priority date: 1981-11-24
Filing date: 1981-11-24
Publication date: 1989-10-09
Also published as: DK156843C; DE3243472A1; DK520181A

Description

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DK 156843 BDK 156843 B

1 · Den foreliggende opfindelse angâr en tværstromsvand- turbine af den i krav l’s indledning angivne art.The present invention relates to a cross-flow water turbine of the type specified in the preamble of claim 1.

Tværstremsvandturbiner, der ogsâ benævnes gennemstram-ningsturbiner, udmærker sig i forhold til andre turbinetyper 5 ved, at virkningsgraden er forholdsvis stor, ogsâ ved smâ vandmængder. Da en tværstr0msvandturbine ogsâ let tilpasses varierende faldhajde, er den især egnet i mindre vandkraft-anlæg. I sâdanne anlæg, der oftest er ubemandede med lej-lighedsvise tilsyn, er det en yderligere fordel ved tvær-10 str0msvandturbiner, at sâdanne urenheder som eksempelvis plantedele og græs i det tilfarte vand, som kan sætte sig mellem skovlene, atter spules bort, nâr skovlene efter ca. en halv omdrejning passeres af det udstrammende vand,Transverse-flow water turbines, also called through-flow turbines, are distinguished from other types of turbines 5 by the fact that the efficiency is relatively high, even with small amounts of water. As a cross-flow water turbine is also easily adapted to varying headlands, it is particularly suitable in smaller hydropower plants. In such plants, which are most often unmanned with occasional inspections, it is an additional advantage of cross-flow water turbines that such impurities, such as plant parts and grass in the supplied water, which can settle between the blades, are again flushed away when the buckets after approx. half a turn is passed by the tightening water,

Ifalge den foreliggende opfindelse foreslâs, at tvær-15 stramsvandturbinen udformes som anvist i krav 1.According to the present invention, it is proposed that the cross-flow water turbine be designed as indicated in claim 1.

Ved denne udformning opnâs, at ogsâ faste genstande, sâsom eksempelvis flasker og grenstumper, kan passere tur-binen uden at blokere denne. Sâdanne faste genstande vil nemlig presse den hængslede ledeplade bort fra turbinetrom-20 len og sâledes kunne passere mellem denne og ledepladen.With this design it is achieved that also solid objects, such as for instance bottles and branch pieces, can pass the turbine without blocking it. Such solid objects will in fact push the hinged baffle away from the turbine drum and thus be able to pass between it and the baffle.

Nâr genstanden har passeret, vil fjederen presse ledepladen tilbage til arbejdsstillingen. Ogsâ væskeslag i det til-ledte vand vil pâ denne mâde blive ledet uden om turbine-tromlen.When the object has passed, the spring will push the baffle back to the working position. Liquid impurities in the supplied water will also be led around the turbine drum in this way.

25 Tværstramsvandturbiner er sædvanligvis forsynet med to indfaringsdyser, der har forskellige gennems tramnings tvær-snit, eksempelvis henholdsvis 1/3 og 2/3 af det samlede tværsnit. Den ene og/eller den anden dyse âbnes i afhængig-hed af vandtilstremningen. Hvor de to dyser er adskilt af 30 en fælles ledeplade, er det ifalge opfindelsen fordelagtigt, at ogsâ denne fælles ledeplade er hængslet som anvist i krav 2. Uanset hvilken dyse en fast genstand passerer, vil den sâledes kunne ledes uden om turbinetromlen.25 Transverse tension water turbines are usually provided with two inlet nozzles which have different through-crossing sections, for example 1/3 and 2/3 of the total cross section, respectively. One and / or the other nozzle opens depending on the water inflow. Where the two nozzles are separated by a common baffle, according to the invention it is advantageous that this common baffle is also hinged as indicated in claim 2. No matter which nozzle a solid object passes, it will thus be possible to guide it around the turbine drum.

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DK 15 6 8 4 3 BDK 15 6 8 4 3 B

Opfindelsen skal i det folgende forklares nærmere i forbindelse med tegningen, der viser et lodret snit gennem en tværstromsvandturbine if0lge opfindelsen.The invention will be explained in more detail below in connection with the drawing, which shows a vertical section through a cross-flow water turbine according to the invention.

5 I et turbinehus 1 er lejret en turbinetromle 2 med aksiale skovle 3· Tromlen er roterbar om en vandret akse.5 In a turbine housing 1 is mounted a turbine drum 2 with axial vanes 3 · The drum is rotatable about a horizontal axis.

Ved h^ælp af en eller, som i det viste eksempel, to indfo-ringsdyser 4 og 5 rettes tilledt vand i hovedsagelig tan-gentiale strâler med rektangulært tværsnit mod tromleskov-10 lene fra tromlens yderside, som antydet ved pilene 6. Van-det passerer derefter tromlen og rammer diametralt eller nærmest diametralt modstâende skovle* inden det forlader turbinehuset, som antydet ved pilen 7.By means of one or, as in the example shown, two insertion nozzles 4 and 5, directed water is directed in substantially tangential jets with a rectangular cross-section towards the drum vanes from the outside of the drum, as indicated by the arrows 6. it then passes the drum and strikes diametrically or almost diametrically opposite vanes * before leaving the turbine housing, as indicated by the arrow 7.

De to indforingsdyser 4 og 5 afgrænses mellem endegavle, 15 der strækker sig vinkelret pâ tromleaksen, af ledeplader 8, 9 og 10, idet den ene ledeplade 9 er fælles for de to dyser.The two insertion nozzles 4 and 5 are delimited between end ends 15 extending perpendicular to the drum axis of baffle plates 8, 9 and 10, one baffle plate 9 being common to the two nozzles.

Den ledeplade 10, der strækker sig længst i vandstrâlernes retning er hængslet og trykkes af en fjeder 11 til den pâ tegningen viste arbejdsstilling. Fjederens kraft er sâledes 20 afpasset, at faste genstande sâsom eksempelvis grenstumper eller flasker, der passerer indforingsdysen 5, vil presse ledepladen 10 bort fra den viste arbejdsstilling, sâledes at genstanden kan passere uden om tromlen 2 gennem turbinen.The baffle plate 10, which extends furthest in the direction of the water jets, is hinged and pressed by a spring 11 to the working position shown in the drawing. The force of the spring is adjusted so that solid objects such as, for example, branch pieces or bottles passing the insertion nozzle 5 will push the baffle plate 10 away from the shown working position, so that the object can pass around the drum 2 through the turbine.

Ogsâ den fælles ledeplade 9 er hængslet eller pâ anden 25 mâde svingbar, sâledes at en genstand, der passerer dysen 4, vil trykke forst denne ledeplade 9 og dernæst den længste ledeplade 10 bort fra tromlen, sâledes at genstanden frit kan passere gennem turbinen uden at odelægge og/eller blokere turbinetromlen 2.Also the common baffle 9 is hinged or otherwise pivotable so that an object passing the nozzle 4 will push first this baffle 9 and then the longest baffle 10 away from the drum so that the object can pass freely through the turbine without destroy and / or block the turbine drum 2.

Claims

A transverse flow water turbine with a turbine drum (2) rotatable about a horizontal axis with axial vanes (3) and an insertion nozzle (4,5) delimited by two baffles (8,10) extending between end ends perpendicular to the drum axis , Which nozzle straightens supplied water in a substantially tangential jet of rectangular cross-section towards the drum vanes from the outside of the drum, the water passing the drum and hitting opposite vanes before leaving the turbine, characterized in that the baffle plate (10) extending is the longest in the direction of flow of the jet, is thus hinged so that it can be pressed from a working position near the turbine drum against a spring force (11) · away from the drum.

Turbine according to claim 1 and with two insertion nozzles (4,5) arranged next to each other along the drum periphery, separated by a common baffle plate (9), characterized in that the common baffle plate (9) is hinged so that it from a working position near the turbine drum can be pushed away from the drum. 20