NO312623B1 - Sykloidalpropell - Google Patents
Sykloidalpropell Download PDFInfo
- 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
Links
- 230000001681 protective effect Effects 0.000 claims description 25
- 230000007704 transition Effects 0.000 description 2
- 241000408710 Hansa Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/04—Propulsive elements directly acting on water of rotary type with rotation axis substantially at right angles to propulsive direction
- B63H1/06—Propulsive elements directly acting on water of rotary type with rotation axis substantially at right angles to propulsive direction with adjustable vanes or blades
- B63H1/08—Propulsive 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/16—Arrangements 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
- B63H5/165—Propeller guards, line cutters or other means for protecting propellers or rudders
Landscapes
- 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)
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)
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)
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 |
-
1997
- 1997-10-24 DE DE19746977A patent/DE19746977C1/en not_active Expired - Fee Related
-
1998
- 1998-09-17 ES ES98117629T patent/ES2197404T3/en not_active Expired - Lifetime
- 1998-09-17 DE DE59808145T patent/DE59808145D1/en not_active Expired - Lifetime
- 1998-09-17 EP EP98117629A patent/EP0911256B1/en not_active Expired - Lifetime
- 1998-10-16 NO NO19984847A patent/NO312623B1/en not_active IP Right Cessation
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM1K | Lapsed by not paying the annual fees |