NO329047B1 - Device for sealing between a guide rail and a turbine housing - Google Patents

Device for sealing between a guide rail and a turbine housing Download PDF

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Publication number
NO329047B1
NO329047B1 NO20080117A NO20080117A NO329047B1 NO 329047 B1 NO329047 B1 NO 329047B1 NO 20080117 A NO20080117 A NO 20080117A NO 20080117 A NO20080117 A NO 20080117A NO 329047 B1 NO329047 B1 NO 329047B1
Authority
NO
Norway
Prior art keywords
turbine housing
guide rail
sealing
sealing material
turbine
Prior art date
Application number
NO20080117A
Other languages
Norwegian (no)
Other versions
NO20080117L (en
Inventor
Ole Gunnar Dahlhaug
Original Assignee
Dynavec As
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 Dynavec As filed Critical Dynavec As
Priority to NO20080117A priority Critical patent/NO329047B1/en
Priority to PCT/NO2009/000003 priority patent/WO2009088299A2/en
Priority to ARP090100032A priority patent/AR070115A1/en
Priority to CL2009000014A priority patent/CL2009000014A1/en
Priority to PE2009000018A priority patent/PE20100002A1/en
Publication of NO20080117L publication Critical patent/NO20080117L/en
Publication of NO329047B1 publication Critical patent/NO329047B1/en

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
    • F03B3/16—Stators
    • F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
    • F03B3/183—Adjustable vanes, e.g. wicket gates
    • 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
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/006—Sealing arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2280/00—Materials; Properties thereof
    • F05B2280/40—Organic materials
    • F05B2280/4004—Rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/02—Rubber
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Hydraulic Turbines (AREA)
  • Sealing Devices (AREA)

Abstract

Fremgangsmåte og anordning for å tette mellom en ledeskinne (6) i et turbinhus (2) og turbinhuset (2) hvor ledeskinnen (6) er dreibar eller forskyvbar i turbinhuset (2) og hvor det mellom turbinhuset (2) og ledeskinnen (6) er anordnet en tetning (14), og hvor fremgangsmåten omfatter operasjonene: - velge et tetningsmateriale (16) fra en materialgruppe hvor materialet er i stand til å forme seg etter en slitt flate mellom turbinhuset (2) og ledeskinnen (6) når tetningsmaterialet (16) presses mot den slitte flate; og - presse tetningsmaterialet (16) mot den slitte flate.Method and apparatus for sealing between a guide rail (6) in a turbine housing (2) and the turbine housing (2) where the guide rail (6) is rotatable or displaceable in the turbine housing (2) and where it between the turbine housing (2) and the guide rail (6) a seal (14) is provided, the method comprising the operations of: - selecting a seal material (16) from a material group where the material is capable of forming after a worn surface between the turbine housing (2) and the guide rail (6) when the seal material ( 16) pressed against the worn surface; and pressing the sealing material (16) against the worn surface.

Description

ANORDNING FOR Å TETTE MELLOM EN LEDESKINNE OG ET TURBINHUS DEVICE FOR SEALING BETWEEN A GUIDE RAIL AND A TURBINE HOUSING

Denne oppfinnelse vedrører en anordning for å tette mellom en ledeskinne og et turbinhus. Nærmere bestemt dreier det seg om en anordning for å tette mellom en ledeskinne og et turbinhus hvor ledeskinnen er dreibar eller forskyvbar i turbinhuset og hvor det mellom turbinhuset og ledeskinnen er anordnet en tetning. This invention relates to a device for sealing between a guide rail and a turbine housing. More specifically, it concerns a device for sealing between a guide rail and a turbine housing where the guide rail is rotatable or displaceable in the turbine housing and where a seal is arranged between the turbine housing and the guide rail.

Turbiner utsettes for slitasje fra det fluid som strømmer gjennom turbinen. Turbiner som tilføres elvevann slites typisk betydelig mer enn turbiner som tilføres vann fra et reservoar. Årsaken er at elvevann ofte inneholder betydelige mengder sand. Turbines are exposed to wear from the fluid that flows through the turbine. Turbines supplied with river water typically wear significantly more than turbines supplied with water from a reservoir. The reason is that river water often contains significant amounts of sand.

For francisturbiner, som vanligvis omfatter et antall dreibare ledeskovler, fører slitasje mellom ledeskovlene og turbinhuset til en betydelig reduksjon i turbinens virkningsgrad. Det kan dessuten forekomme at slitasjen fører til så stor lekkasje gjennom turbinen når ledeskovlene befinner seg i sin lukkede posisjon, at åpning og lukking av en oppstrøms hovedventil blir tilnærmet umulig. For Francis turbines, which usually comprise a number of rotatable guide vanes, wear between the guide vanes and the turbine housing leads to a significant reduction in the turbine's efficiency. It can also happen that the wear leads to such a large leakage through the turbine when the guide vanes are in their closed position, that opening and closing an upstream main valve becomes virtually impossible.

Det er kjent å forsyne ledeskinnene med et relativt hardt, slitesterkt materiale for å redusere lekasjestrømmen mellom ledeskinnen og turbinhuset. It is known to provide the guide rails with a relatively hard, wear-resistant material to reduce the leakage current between the guide rail and the turbine housing.

Oppfinnelsen har til formål å avhjelpe eller redusere i det minste én av ulempene ved kjent teknikk. The purpose of the invention is to remedy or reduce at least one of the disadvantages of known technology.

Formålet oppnås i henhold til oppfinnelsen ved de trekk som er angitt i nedenstående beskrivelse og i de etterfølgende patentkrav. The purpose is achieved according to the invention by the features indicated in the description below and in the subsequent patent claims.

Det er tilveiebrakt en tetning for en ledeskinne i et turbinhus hvor ledeskinnen er dreibar eller forskyvbar i turbinhuset og hvor det mellom turbinhuset og ledeskinnen er anordnet en tetning, og hvor et tetningsmateriale via en kanal i ledeskinnen er påført et hydraulisk trykk for å kunne presses mot turbinhuset. Tetningen kjennetegnes ved at tetningsmaterialet er forskyvbart anbrakt i en utsparing som rager innover i ledeskinnens endeflater, og hvor tetningsmaterialet er valgt fra en materialgruppe som innehar den egenskap at det er i stand til å forme seg etter en slitt flate i turbinhuset når tetningsmaterialet presses mot den slitte flate. A seal is provided for a guide rail in a turbine housing where the guide rail is rotatable or displaceable in the turbine housing and where a seal is arranged between the turbine housing and the guide rail, and where a sealing material via a channel in the guide rail is applied with hydraulic pressure in order to be pressed against the turbine housing. The seal is characterized by the fact that the sealing material is displaceably placed in a recess that projects inwards into the end surfaces of the guide rail, and where the sealing material is selected from a material group which has the property that it is able to shape itself to a worn surface in the turbine housing when the sealing material is pressed against it worn surface.

Tetningsmaterialet kan for eksempel være valgt fra materialgruppen elastomere, kunstmaterialer, naturlig forekommende materialer, metalliske materialer eller kombi-nasjoner av disse. The sealing material can, for example, be selected from the material group elastomers, artificial materials, naturally occurring materials, metallic materials or combinations of these.

Tetningsmaterialet kan være anordnet i turbinhuset og være innrettet til å kunne presses mot ledeskinnen. The sealing material can be arranged in the turbine housing and be arranged to be able to be pressed against the guide rail.

Tetningsmaterialet kan være påført en kraft som er tilveiebrakt ved hjelp av en aktua-tor. The sealing material can be subjected to a force which is provided by means of an actuator.

For mindre turbiner kan kraften være tilveiebrakt ved hjelp av en fjær. For smaller turbines, the power may be provided by means of a spring.

Den foreslåtte anordning muliggjør en vesentlig forlenget levetid for ledeskinner og nærliggende flater i turbinhuset, idet tetningene i det minste delvis opprettholder en akseptabel virkningsgrad i et turbinanlegg. The proposed device enables a significantly extended lifetime for guide rails and nearby surfaces in the turbine housing, as the seals at least partially maintain an acceptable degree of efficiency in a turbine plant.

I det etterfølgende beskrives et eksempel på en foretrukket utførelsesform som er anskueliggjort på medfølgende tegninger, hvor: Fig. 1 viser delvis skjematisk et aksialsnitt gjennom et turbinhus; In what follows, an example of a preferred embodiment is described which is visualized in the accompanying drawings, where: Fig. 1 partially schematically shows an axial section through a turbine housing;

Fig. 2 viser i større målestokk et utsnitt fra fig. 1; og Fig. 2 shows on a larger scale a section from fig. 1; and

Fig. 3 viser et snitt II-II i fig. 2. Fig. 3 shows a section II-II in fig. 2.

På tegningene betegner henvisningstallet 1 et turbinanlegg som omfatter et turbinhus 2, en turbin 4 og et antall ledeskovler 6. In the drawings, the reference number 1 denotes a turbine system comprising a turbine housing 2, a turbine 4 and a number of guide vanes 6.

Et turbinhus 2 for praktisk anvendelse er normalt sammenbygget av en rekke ikke viste komponenter. En anleggsflate 8 som ledeskovlen 6 ligger an imot utgjøres såle-des ofte av en ringformet slitedel. I denne sammenheng anses den som en del av turbinhuset 2. A turbine housing 2 for practical use is normally assembled from a number of components not shown. A contact surface 8 against which the guide vane 6 rests is thus often constituted by an annular wear part. In this context, it is considered part of the turbine housing 2.

Ledeskovlen 6 er dreibart opplagret i turbinhuset 2 ved hjelp av hylselagere 10 som er anbrakt i ledeskovelboringer 12, se fig. 2. The guide vane 6 is rotatably supported in the turbine housing 2 by means of sleeve bearings 10 which are placed in the guide vane bores 12, see fig. 2.

Ledeskovlen 6 er i dette foretrukne utførelseseksempel forsynt med fire tetninger 14 hvor et tetningsmateriale 16 i form av et relativt hardt, armert gummimateriale befinner seg i en utsparing 18 i ledeskovelen 6. Tetningsmaterialet 16 er normalt i hoved-sak tettende og aksialt forskyvbart i utsparingen 18, men kan også, særlig før tetningsmaterialet 16 slites, fylle utsparingen 18 helt. Om ønskelig kan tetningsmaterialet 16 være sammenføyd med utsparingen 18 langs sin omkrets, for eksempel ved hjelp av liming. In this preferred embodiment, the guide vane 6 is provided with four seals 14 where a sealing material 16 in the form of a relatively hard, reinforced rubber material is located in a recess 18 in the guide vane 6. The sealing material 16 is normally essentially sealing and axially displaceable in the recess 18 , but can also, especially before the sealing material 16 wears out, fill the recess 18 completely. If desired, the sealing material 16 can be joined to the recess 18 along its circumference, for example by means of gluing.

Utsparingene 18 kommuniserer med en senterboring 20 i ledeskovlen 6 ved hjelp av kanaler 22. The recesses 18 communicate with a center bore 20 in the guide vane 6 by means of channels 22.

Det viste snitt av ledeskovlen 6 i fig. 1 og 2 er tatt langs et pilsatt, trappet snitt i fig. The shown section of the guide vane 6 in fig. 1 and 2 are taken along an arrowed, stepped section in fig.

3. Kanalene 22 er vist skjematisk. 3. The channels 22 are shown schematically.

Senterboringen 20 er koplet til en kilde for trykksatt fluid, normalt vann. The center bore 20 is connected to a source of pressurized fluid, normally water.

Etter hvert som anleggsflaten 8 slites presser hydraulisk trykk, som tilføres til utsparingen 18 via senterboringen 20 og kanalene 22, tetningsmaterialet 16 inn i de kor-responderende, slitte partier av anleggsflaten 8. As the contact surface 8 wears, hydraulic pressure, which is supplied to the recess 18 via the center bore 20 and the channels 22, presses the sealing material 16 into the corresponding, worn parts of the contact surface 8.

Det forhold at tetningsmaterialet 16 presses mot anleggsflaten 8 kan også lede til at slitasjeraten reduseres. The fact that the sealing material 16 is pressed against the contact surface 8 can also lead to a reduction in the wear rate.

Når ledeskovlen 6 skal dreies til en annen posisjon i turbinhuset 2, avlastes det hydrauliske trykk fra utsparingene 18 og derved også trykket som presser tetningsmaterialet 16 mot anleggsflaten 8. Deretter dreies ledeskovlen 6 til sin nye posisjon, hvor-etter det hydrauliske trykk igjen påføres tetningsmaterialet 16. When the guide vane 6 is to be turned to another position in the turbine housing 2, the hydraulic pressure from the recesses 18 is relieved and thereby also the pressure that presses the sealing material 16 against the contact surface 8. The guide vane 6 is then turned to its new position, after which the hydraulic pressure is again applied to the sealing material 16.

Claims (1)

1. Anordning ved tetning (14) for ledeskinne (6) i et turbinhus (2) hvor ledeskinnen (6) er dreibar eller forskyvbar i turbinhuset (2) og hvor det mellom turbinhuset (2) og ledeskinnen (6) er anordnet en tetning (14), og hvor et tetningsmateriale (16) via en kanal i (20) ledeskinnen (6) er påført et hydraulisk trykk for å kunne presses mot turbinhuset (2), karakterisert ved at tetningsmaterialet (16) er forskyvbart anbrakt i en utsparing (18) som rager innover i ledeskinnens (6) endeflater, og hvor tetningsmaterialet (16) er valgt fra en materialgruppe som innehar den egenskap at det er i stand til å forme seg etter en slitt flate i turbinhuset (2) når tetningsmaterialet (16) presses mot den slitte flate.1. Device for sealing (14) for guide rail (6) in a turbine housing (2) where the guide rail (6) is rotatable or displaceable in the turbine housing (2) and where a seal is arranged between the turbine housing (2) and the guide rail (6) (14), and where a sealing material (16) via a channel in (20) the guide rail (6) is applied with hydraulic pressure in order to be able to be pressed against the turbine housing (2), characterized in that the sealing material (16) is displaceably placed in a recess (18) which protrudes inwards into the end surfaces of the guide rail (6), and where the sealing material (16) is selected from a material group which has the property that it is able to shape itself according to a worn surface in the turbine housing (2) when the sealing material (16 ) is pressed against the worn surface.
NO20080117A 2008-01-08 2008-01-08 Device for sealing between a guide rail and a turbine housing NO329047B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NO20080117A NO329047B1 (en) 2008-01-08 2008-01-08 Device for sealing between a guide rail and a turbine housing
PCT/NO2009/000003 WO2009088299A2 (en) 2008-01-08 2009-01-05 Method and device for sealing between a guide vane and a turbine housing
ARP090100032A AR070115A1 (en) 2008-01-08 2009-01-07 METHOD AND DEVICE FOR SEALING BETWEEN A FIXED ALABE AND THE TURBINE HOUSING
CL2009000014A CL2009000014A1 (en) 2008-01-08 2009-01-07 Sealing device for a guide or conductive blade rotating within a water turbine housing, wherein a sealing material is sealed against a gap provided in said guide or conductive blade, or in the turbine housing, and wherein the gap communicates with a transverse channel with fluid.
PE2009000018A PE20100002A1 (en) 2008-01-08 2009-01-08 METHOD AND DEVICE FOR THE SEALING BETWEEN A FIXED ALABE AND A TURBINE HOUSING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20080117A NO329047B1 (en) 2008-01-08 2008-01-08 Device for sealing between a guide rail and a turbine housing

Publications (2)

Publication Number Publication Date
NO20080117L NO20080117L (en) 2009-07-09
NO329047B1 true NO329047B1 (en) 2010-08-02

Family

ID=40853644

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20080117A NO329047B1 (en) 2008-01-08 2008-01-08 Device for sealing between a guide rail and a turbine housing

Country Status (5)

Country Link
AR (1) AR070115A1 (en)
CL (1) CL2009000014A1 (en)
NO (1) NO329047B1 (en)
PE (1) PE20100002A1 (en)
WO (1) WO2009088299A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO329647B1 (en) * 2009-07-14 2010-11-22 Dynavec As Method and apparatus for counteracting wear around a guide vane

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1685260A (en) * 1926-06-17 1928-09-25 William M White Guide vane
US1817654A (en) * 1930-08-27 1931-08-04 Newport News S & D Co Adjustable seal for hydraulic turbine gates and the like
SE88257C1 (en) * 1934-06-18 1937-01-05 Ekvall, A. LIGHTING DEVICE
US3332441A (en) * 1964-09-02 1967-07-25 Allis Chalmers Mfg Co Wicket gate end seals
US3601497A (en) * 1969-10-24 1971-08-24 Allis Chalmers Mfg Co Wicket gate end seal for hydraulic machine
US3743435A (en) * 1971-09-03 1973-07-03 Dominion Eng Works Ltd Seal manufacture and assembly
US3947147A (en) * 1974-04-08 1976-03-30 Valentina Vasilievna Loktaeva Stator of hydraulic machine with the end-face sealing of vanes
US4203703A (en) * 1976-11-04 1980-05-20 Dominion Engineering Works Limited Hydraulic turbo machine wicket gate seals
CA1095373A (en) * 1978-06-01 1981-02-10 Gleb S. Schegolev Arrangement for end-face sealing of guide vanes in the distributor of a hydraulic machine
US4277221A (en) * 1976-04-22 1981-07-07 Dominion Engineering Works Limited Wicket gate bearing seal

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1182583A (en) * 1957-09-11 1959-06-26 Creusot Forges Ateliers Sealing device between two members capable of coming into contact with one another
FR1257377A (en) * 1959-07-01 1961-03-31 Vevey Atel Const Mec Moving vane distributor intended for a low-head turbine
FR1317759A (en) * 1961-05-09 1963-05-08
FR83266E (en) * 1963-03-14 1964-07-17 Creusot Forges Ateliers Sealing device between two members capable of coming into contact with one another
JPS5442543A (en) * 1978-07-31 1979-04-04 Hitachi Ltd Guide vane water leakage preventer
JPS58133484A (en) * 1982-02-03 1983-08-09 Toshiba Corp Hydraulic machine
JPH0352382U (en) * 1989-09-29 1991-05-21
JP3270575B2 (en) * 1993-06-28 2002-04-02 株式会社日立製作所 Guide vane sealing device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1685260A (en) * 1926-06-17 1928-09-25 William M White Guide vane
US1817654A (en) * 1930-08-27 1931-08-04 Newport News S & D Co Adjustable seal for hydraulic turbine gates and the like
SE88257C1 (en) * 1934-06-18 1937-01-05 Ekvall, A. LIGHTING DEVICE
US3332441A (en) * 1964-09-02 1967-07-25 Allis Chalmers Mfg Co Wicket gate end seals
US3601497A (en) * 1969-10-24 1971-08-24 Allis Chalmers Mfg Co Wicket gate end seal for hydraulic machine
US3743435A (en) * 1971-09-03 1973-07-03 Dominion Eng Works Ltd Seal manufacture and assembly
US3947147A (en) * 1974-04-08 1976-03-30 Valentina Vasilievna Loktaeva Stator of hydraulic machine with the end-face sealing of vanes
US4277221A (en) * 1976-04-22 1981-07-07 Dominion Engineering Works Limited Wicket gate bearing seal
US4203703A (en) * 1976-11-04 1980-05-20 Dominion Engineering Works Limited Hydraulic turbo machine wicket gate seals
CA1095373A (en) * 1978-06-01 1981-02-10 Gleb S. Schegolev Arrangement for end-face sealing of guide vanes in the distributor of a hydraulic machine

Also Published As

Publication number Publication date
NO20080117L (en) 2009-07-09
CL2009000014A1 (en) 2010-02-05
WO2009088299A3 (en) 2010-04-08
WO2009088299A2 (en) 2009-07-16
PE20100002A1 (en) 2010-02-05
AR070115A1 (en) 2010-03-17

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