NO312623B1 - Sykloidalpropell - Google Patents

Sykloidalpropell Download PDF

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Publication number
NO312623B1
NO312623B1 NO19984847A NO984847A NO312623B1 NO 312623 B1 NO312623 B1 NO 312623B1 NO 19984847 A NO19984847 A NO 19984847A NO 984847 A NO984847 A NO 984847A NO 312623 B1 NO312623 B1 NO 312623B1
Authority
NO
Norway
Prior art keywords
protective plate
profiling
area
propeller according
cycloidal propeller
Prior art date
Application number
NO19984847A
Other languages
Norwegian (no)
Other versions
NO984847L (en
NO984847D0 (en
Inventor
Harald Gross
Original Assignee
Voith Hydro Gmbh & Co Kg
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 Voith Hydro Gmbh & Co Kg filed Critical Voith Hydro Gmbh & Co Kg
Publication of NO984847D0 publication Critical patent/NO984847D0/en
Publication of NO984847L publication Critical patent/NO984847L/en
Publication of NO312623B1 publication Critical patent/NO312623B1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H1/00Propulsive elements directly acting on water
    • B63H1/02Propulsive elements directly acting on water of rotary type
    • B63H1/04Propulsive elements directly acting on water of rotary type with rotation axis substantially at right angles to propulsive direction
    • B63H1/06Propulsive elements directly acting on water of rotary type with rotation axis substantially at right angles to propulsive direction with adjustable vanes or blades
    • B63H1/08Propulsive elements directly acting on water of rotary type with rotation axis substantially at right angles to propulsive direction with adjustable vanes or blades with cyclic adjustment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H5/00Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/16Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recesses; with stationary water-guiding elements; Means to prevent fouling of the propeller, e.g. guards, cages or screens
    • B63H5/165Propeller guards, line cutters or other means for protecting propellers or rudders

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Harvester Elements (AREA)
  • Soil Working Implements (AREA)
  • Wind Motors (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

Oppfinnelsen vedrører en sykloidalpropell med en rotor, hvor propellvingene i rotoren er lagret syklisk svingbare, rotorens dreieakse og vingenes svingeakser under drift forløper innbyrdes parallelt og loddrett og det ved propellvingenes frie ende er anordnet en beskyttelsesflate, som er kraftig profilert, sett i fartsretningen. The invention relates to a cycloidal propeller with a rotor, where the propeller blades in the rotor are stored cyclically pivotable, the axis of rotation of the rotor and the axes of rotation of the blades during operation run parallel and perpendicular to each other and a protective surface is arranged at the free end of the propeller blades, which is strongly profiled, seen in the direction of travel.

En beskrivelse av en slik propell finnes i et spesialtrykk fra HANSA nr. 16/1965, s. 1543 - 1548 såvel som i en publikasjon fra firma Voith: Voith-Schneider-Propeller, 2500 B65, s. 15.1 disse publikasjoner er det vist en respektiv sykloidal propell, som benyttes for vannfarkoster og som har en i fartsretningen foran profilert beskyttelsesplate for propellvingene. A description of such a propeller can be found in a special print from HANSA no. 16/1965, pp. 1543 - 1548 as well as in a publication from the company Voith: Voith-Schneider-Propeller, 2500 B65, pp. 15.1 these publications show a respective cycloidal propeller, which is used for watercraft and which has a protective plate for the propeller blades profiled in the direction of travel in front.

For et slepe/skyvefartøy kreves det mulighet for samme trossekraft i begge farts-retninger, altså både forover og akterover. Under vingenes dreiebevegelse tilveiebringes de største skyvekrefter i området ved styrepunktet. Derfor vil i dette område også de største sugekrefter og utganghastigheter oppstå. Ved en side-om-side-anordning av propeller vil propellens styrepunkter ligge utvendig ved en skyveretning forover. Ved en retning akterover vil styrepunktene derimot ligge innvendig. Profileringen av beskyttelsesplaten, slik den fremgår av den siterte kjente teknikk, kan ikke møte disse krav. For a towing/pushing vessel, the possibility of the same hawsing force is required in both directions of speed, i.e. both forward and aft. During the turning movement of the wings, the greatest thrust forces are provided in the area at the control point. Therefore, the greatest suction forces and output velocities will also occur in this area. In the case of a side-by-side arrangement of propellers, the propeller's control points will lie on the outside in a forward thrust direction. In a direction aft, on the other hand, the control points will be inside. The profiling of the protective plate, as it appears from the cited prior art, cannot meet these requirements.

Hensikten med oppfinnelsen er å utforme beskyttelsesplaten under hensyntagen til de opptredende kraftige sugekrefter og en i samsvar med de krevede trossekrefter for fart forover og akterover tilsvarende god kvalitetsgrad. The purpose of the invention is to design the protective plate taking into account the strong suction forces that occur and one in accordance with the required rope forces for speed forward and aft with a correspondingly good degree of quality.

Dette oppnås ifølge oppfinnelsen med de kjennetegnende trekk som angitt i patentkrav 1. This is achieved according to the invention with the characteristic features as stated in patent claim 1.

I samsvar med dette utformes beskyttelsesplateprofilen slik at en fremre kraftig profilering i skyveretning ligger foran propellen i området for styrepunktet for forover-fart, og i akterover-retning ligger etter propellen i området for styrepunktet for akterover-fart. In accordance with this, the protective plate profile is designed so that a strong forward profiling in the thrust direction is in front of the propeller in the area of the control point for forward speed, and in the aft direction is behind the propeller in the area of the control point for aft speed.

Oppfinnelsen skal nå forklares nærmere under henvisning til tegningen, hvor: The invention will now be explained in more detail with reference to the drawing, where:

Fig. 1 viser et delriss av et skipsskrog, Fig. 1 shows a partial view of a ship's hull,

fig. 2 viser et grunnriss av beskyttelsesplaten, og fig. 2 shows a plan view of the protective plate, and

fig. 3 viser snitt gjennom beskyttelsesplaten i ulike plan. fig. 3 shows sections through the protective plate in different planes.

I fig. 1 er baugen 12 til et skip, eksempelvis et slepefartøy, og skipsbunnen 13 til skipet vist. En beskyttelsesplate 2 er festet til skipsbunnen 13 ved hjelp av stag 9. Beskyttelsesplaten skjermer dermed de enkelte propellvinger 1,1' mot eksempelvis bunn-berøring eller berøring med andre fremmedlegemer. Beskyttelsesplaten 2 er vist nærmere i fig. 2, hvor også vingesirkelen 8 henholdsvis 8' til propellvingene er inntegnet. Vingesirkelen hører her til to i fartsretningen ved siden av hverandre anordnede propeller. I fig. 2 er også ekstremstillingene til styrepunktene for forover-fart S og akterover-fart S' og de tilhørende eksentrisiteter EV (for forover-fart) og ER (for akterover-fart) angitt. Videre er også strømningsprofilene for forover- og akterover-fart antydet med piler. In fig. 1, the bow 12 of a ship, for example a towing vessel, and the bottom 13 of the ship are shown. A protective plate 2 is attached to the ship's bottom 13 by means of struts 9. The protective plate thus shields the individual propeller blades 1, 1' against, for example, bottom contact or contact with other foreign bodies. The protective plate 2 is shown in more detail in fig. 2, where the wing circle 8 and 8' of the propeller blades are also drawn. The wing circle here belongs to two propellers arranged next to each other in the direction of travel. In fig. 2, the extreme positions of the control points for forward speed S and aft speed S' and the associated eccentricities EV (for forward speed) and ER (for aft speed) are also indicated. Furthermore, the flow profiles for forward and aft speed are also indicated with arrows.

I fig. 3 er profileringen til beskyttelsesplaten vist i form av snittene a og c. Man ser den parabelformede profilering i hovedsaken i området mellom vingesirkelen og den tilordnede kant. I midtområdet, mellom snittplanene a og c gjennom styrepunktets ekstremstillinger, ser man beskyttelsesplatens overgangsområde (snitt b), hvor det ikke forefinnes noen profilering. In fig. 3, the profiling of the protective plate is shown in the form of sections a and c. You can see the parabolic profiling mainly in the area between the wing circle and the associated edge. In the middle area, between section planes a and c through the extreme positions of the control point, you can see the transition area of the protective plate (section b), where there is no profiling.

Man ser videre at beskyttelsesplaten avsmalner mot den respektive motliggende kant i beskyttelsesplatens profilerte område. De kanter av beskyttelsesplaten hvor det ikke forefinnes noen profilering, er også i det minste lett avrundet. Avsmalningsgraden til beskyttelsesplaten utgjør omtrent mellom 40 og 60% av platens maksimale tykkelse, idet beskyttelsesplatens maksimale tykkelse kan utgjøre omtrent 15% av vingesirkelens diameter. Det skal også bemerkes at profileringen naturligvis ikke behøver å være en nøyaktig parabel. You can also see that the protective plate tapers towards the respective opposite edge in the protective plate's profiled area. The edges of the protective plate where there is no profiling are also at least slightly rounded. The degree of tapering of the protective plate amounts to approximately between 40 and 60% of the plate's maximum thickness, as the maximum thickness of the protective plate may amount to approximately 15% of the wing circle diameter. It should also be noted that the profiling does not naturally have to be an exact parabola.

Det er naturligvis klart og krever egentlig ingen ekstra betoning, at profileringen er foretatt i det plateområde henholdsvis på den plateside som vender mot vingene. I fig. 3 er disse avrundingsområder i parabelform betegnet med 5 - for forover-fart - henholdsvis med 6 - for akterover-fart. Snittet b viser det midtre område henholdsvis overgangsområdet med liten profilering. It is of course clear and really requires no additional emphasis that the profiling is done in the plate area or on the plate side facing the wings. In fig. 3, these rounding areas are in parabolic shape denoted by 5 - for forward speed - respectively by 6 - for aft speed. Section b shows the middle area or the transition area with little profiling.

Denne utførelsesform av beskyttelsesplaten gir en god tilpassing av platens kvalitetsgrad til strømningsbetingelsene ved forover-/akterover-fart. Kvalitetsgradens forbedring utgjør ca. 10%) sammenlignet med en normalt utformet plate. This design of the protective plate provides a good adaptation of the plate's quality to the flow conditions at forward/aft speed. The improvement in the degree of quality amounts to approx. 10%) compared to a normally designed plate.

Claims (6)

1. Sykloidalpropell med en rotor, hvor propellvingene i rotoren er lagret syklisk svingbart, rotorens dreieakse og vingesvingeaksene under drift forløper innbyrdes parallelt og loddrett, og det ved propellvingenes (1) frie ende er anordnet en beskyttelsesplate (2), karakterisert ved at beskyttelsesplaten (2) - i snitt loddrett på aksen mellom ekstremstillingene til styrepunktet (S,S') - har en fremre kraftig profilering i området ved snittplanet gjennom ekstremstillingen (ey) til styrepunktet for forover-fart, og ved at beskyttelsesplaten (2) i området om snittplanet gjennom ekstremstillingen (er) til styrepunktet for akterover-fart har en omtrent like kraftig profilering i akterover-fartretningen.1. Cycloidal propeller with a rotor, where the propeller blades in the rotor are stored in a cyclically pivotable manner, the axis of rotation of the rotor and the axis of blade rotation during operation run parallel and perpendicular to each other, and a protective plate (2) is arranged at the free end of the propeller blades (1), characterized in that the protective plate (2) - on average perpendicular to the axis between the extreme positions of the control point (S,S') - has a forward strong profiling in the area of the cut plane through the extreme position (ey) of the control point for forward speed, and in that the protective plate (2) in the area of the cut plane through the extreme position (s) to the control point for aft-over speed has an approximately equally strong profiling in the direction of aft-over speed. 2. Sykloidalpropell ifølge krav 1, karakterisert ved at beskyttelsesplaten (2) er lite profilert på midten, mellom planene gjennom styre-punktenes endestillinger.2. Cycloidal propeller according to claim 1, characterized in that the protective plate (2) is slightly profiled in the middle, between the planes through the end positions of the control points. 3. Sykloidalpropell ifølge krav 1 eller 2, karakterisert ved at i området mellom planene gjennom ekstremstillingene til styrepunktet er profileringen ført fra den tilordnede beskyttelsesplatekant og maksimalt omtrent til vingesirkelen (8) og i de ytterligere områder av beskyttelsesplaten, altså ved dens - med hensyn på skipets lengdeakse - sidekanter, maksimalt svarer til den i det andre område gitte profilering.3. Cycloidal propeller according to claim 1 or 2, characterized in that in the area between the planes through the extreme positions to the steering point the profiling is carried from the assigned protective plate edge and at most approximately to the wing circle (8) and in the further areas of the protective plate, i.e. at its - with regard to the longitudinal axis of the ship - side edges, maximum corresponding to the profiling given in the other area. 4. Sykloidalpropell ifølge et av kravene 1-3, karakterisert v e d at profileringen har form av en parabel.4. Cycloidal propeller according to one of claims 1-3, characterized in that the profiling has the shape of a parabola. 5. Sykloidalpropell ifølge et av kravene 1-4, karakterisert v e d at beskyttelsesplaten i det område hvor det ikke forefinnes noen profilering, avsmalner seg i tverrsnitt i retning fra den kant hvorfra profileringen går ut, og mot den motliggende kant.5. Cycloidal propeller according to one of claims 1-4, characterized in that the protective plate in the area where there is no profiling tapers in cross-section in the direction from the edge from which the profiling exits, and towards the opposite edge. 6. Sykloidalpropell ifølge krav 5, karakterisert ved at avsmalningsgraden utgjør mellom 40° og 60°.6. Cycloidal propeller according to claim 5, characterized in that the degree of taper is between 40° and 60°.
NO19984847A 1997-10-24 1998-10-16 Sykloidalpropell NO312623B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19746977A DE19746977C1 (en) 1997-10-24 1997-10-24 Cycloidal propeller for hydrofoil

Publications (3)

Publication Number Publication Date
NO984847D0 NO984847D0 (en) 1998-10-16
NO984847L NO984847L (en) 1999-04-26
NO312623B1 true NO312623B1 (en) 2002-06-10

Family

ID=7846475

Family Applications (1)

Application Number Title Priority Date Filing Date
NO19984847A NO312623B1 (en) 1997-10-24 1998-10-16 Sykloidalpropell

Country Status (4)

Country Link
EP (1) EP0911256B1 (en)
DE (2) DE19746977C1 (en)
ES (1) ES2197404T3 (en)
NO (1) NO312623B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004020522B4 (en) * 2004-04-26 2006-04-27 Voith Turbo Marine Gmbh & Co. Kg cycloidal

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB707670A (en) * 1950-12-13 1954-04-21 Voith Gmbh J M Improvements in water craft with drive by vane wheel propeller
NO129784B (en) * 1972-07-12 1974-05-27 Liaaen As A M

Also Published As

Publication number Publication date
DE19746977C1 (en) 1999-02-25
NO984847L (en) 1999-04-26
DE59808145D1 (en) 2003-06-05
ES2197404T3 (en) 2004-01-01
EP0911256A3 (en) 2001-08-01
EP0911256A2 (en) 1999-04-28
EP0911256B1 (en) 2003-05-02
NO984847D0 (en) 1998-10-16

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