NL8105275A - SHIP SCREW, PROVIDED WITH TWO OR MORE PERFORATED HOLLOW BLADES. - Google Patents
SHIP SCREW, PROVIDED WITH TWO OR MORE PERFORATED HOLLOW BLADES. Download PDFInfo
- Publication number
- NL8105275A NL8105275A NL8105275A NL8105275A NL8105275A NL 8105275 A NL8105275 A NL 8105275A NL 8105275 A NL8105275 A NL 8105275A NL 8105275 A NL8105275 A NL 8105275A NL 8105275 A NL8105275 A NL 8105275A
- Authority
- NL
- Netherlands
- Prior art keywords
- propeller
- hub
- ship
- screw
- channel
- Prior art date
Links
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
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/113—Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
- C02F3/205—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors
- C02F3/207—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors with axial thrust propellers
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Microbiology (AREA)
- Organic Chemistry (AREA)
- Aviation & Aerospace Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Combustion & Propulsion (AREA)
- Hydrology & Water Resources (AREA)
- Ocean & Marine Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Catching Or Destruction (AREA)
- Toys (AREA)
- Screw Conveyors (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Wind Motors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
* 'Sfc. * VO 2555* 'Sfc. * VO 2555
Scheepsschroef, voorzien van twee of meer geperforeerde holle bladen. +o+*o+o+o+o+o+o+o+o+o+o+o+o+o+o+o+o+o+o+o+o+o+ Λ \Ship's propeller, provided with two or more perforated hollow blades. + o + * o + o + o + o + o + o + o + o + o + o + o + o + o + o + o + o + o + o + o + o + o + Λ \
De uitvinding heeft betrekking op een scheepsschrpef, om-vattende twee of meer holle geperforeerde bladen, aangebracht op'een een kanaal bevattende naaf.The present invention relates to a ship comprising two or more hollow perforated sheets mounted on a channel-containing hub.
Uit. de Nederlandse octrooiaanvrage nummer j6.0lk22 is een 5' scheepsschroef bekend, omvattende rond een naaf aangebrachte holle bladen, die hetzij aan de stuwzijde, hetzij aan de zuig- of luwtezijde· voorzien zijn van perforaties en voorts elk via een in de naaf* aangebracht corresponderend kanaal in verbinding staan met de, eveneens holle, aandri j fas rond welke de naaf is bevestigd. De holle as is verder ver- * 10 bonden met een bron voor een gasvormig, vloeibaar of poedervormig ma-teriaal.From. Dutch patent application number j6.0lk22 discloses a 5 'ship's propeller, comprising hollow blades arranged around a hub, which are provided with perforations either on the weir side, or on the suction or lee side, and further each via a hub * corresponding channel communicate with the, also hollow, drive shaft around which the hub is attached. The hollow shaft is further connected to a source of a gaseous, liquid or powdered material.
Deel uitmakende van het voortstuwingsmechanisme van een schip kan met de genoemde scheepsschroef bovendien worden bereikt dat tijdens de rotatie van de schroef hetzij door overdruk, hetzij onder in-15 vloed van de zuigwerking, die bij rotatie van de schroef daarvan uitgaat, de eerdergenoemde materialen via de holle as en de in de naaf aange-’ brachte kanalen naar. de holle sehroefbladen worden getransporteerd om vervolgens via de perforaties in het omringende water te stromen en daar-in te worden verdeeld.Part of the propulsion mechanism of a ship, it can moreover be achieved with the said propeller that during the rotation of the propeller either by overpressure or under the influence of the suction effect, which proceeds upon rotation of the propeller, the aforementioned materials via the hollow shaft and the channels arranged in the hub. the hollow helical blades are transported and then flow through the perforations into the surrounding water and are distributed therein.
20 . .* Doel van de nitvinding is een scheepsschroef van de in de aanhef vermelde soort met een met betrekking tot het voortstnwingsmechanisme verbeterd rendement.20. * The object of the invention is to provide a propeller of the type mentioned in the opening paragraph with an improved efficiency in relation to the propulsion mechanism.
Volgens de uitvinding wordt een scheepsschroef verschaft die daardoor is gekenmerkt dat elk hoi blad aan de luwtezijde daarvan is 25 geperforeerd en via een door de naaf aangebracht kanaal verbonden is met de stuwzijde van de schroef.According to the invention a ship's propeller is provided, characterized in that each hay blade is perforated on its lee side and is connected via a channel provided by the hub to the propeller side of the propeller.
Bij rotatie van de scheepsschroef volgens de uitvinding, die rond een normale massieve as is aangebracht, althans een as via welke geen materialen tot de holte van de sehroefbladen tijdens de rotatie 30 worden toegelaten, stroomt water uit het gebied aan de stuwzijde van de r schroef via het kanaal door de naaf naar de holle ruimte in het corres-When the ship's propeller according to the invention is rotated, which is arranged around a normal solid shaft, at least one shaft via which no materials are admitted to the cavity of the propeller blades during rotation, water flows out of the area on the propeller side of the propeller via the channel through the hub to the hollow space in the corre-
Oponderendeschroefblad en van daaruit via de perforaties naar het gebied aan de-luwtezijde van de schroef. Gebleken is dat aeze waterrecirculatie \8105275 4 -2- gepaard gaat met een van het toerental afhankelijke, aanmerkelijke verbetering van het rendement van de verking van de schroef, keribaar aan het brandstofverbruik,. de vaarsnelheid van het schip en de trekkracht.Lower blade and from there through the perforations to the area on the lee side of the propeller. It has been found that this water recirculation is accompanied by a significant speed-dependent improvement in the efficiency of the screw spring, dependent on the fuel consumption, depending on the speed. the boat speed and the traction.
Volgens een voor de rendement sverbetering van de schroef- 5 verking voordelige uitvoeringsvorm van de schroef volgens de uitvinding is elk kanaal door de naaf aan de stuvzijde van de schroef in hoofd-zaak evenvijdig aan de rotatieas gericht. . · ' -According to an embodiment of the screw according to the invention which is advantageous for improving the screw spring efficiency, each channel is directed substantially parallel to the axis of rotation through the hub on the strut side of the screw. . - '-
Doelmatig vorden de.perforaties aan de luvtezijde van· de schroefbladen aangebracht evenvijdig aan en, in de rotatierichting van 10 de propeller gezien, juist achter de trekkerslijn. Welisvaar is Sen der-gelijke maatregel bekend uit de Nederlandse octrooiaanvrage nvmaer 78.03906.The perforations on the luv side of the propeller blades are expediently arranged at the same time and, seen in the direction of rotation of the propeller, just behind the tractor line. However, such a measure is known from Dutch patent application nvmaer 78.03906.
, Daarbij betreft'het eehter een propeller vaarmede een gasvormig, - poeder-vormig of vloeibaar materiaal in een vloeistof vordt verdeeld onder be-nutting van imploderende cavitatieholten. Daarentegen heeft de uitvinding ' 15 betrekking op een vbor de voortstwing van een schip dienende scheepsschroef. · 'It concerns, however, a propeller with which a gaseous, powdery or liquid material in a liquid is distributed using imploding cavitation cavities. On the other hand, the invention relates to a ship's propeller serving for the propulsion of a ship. · '
Proefondervindelijk is met behulp van een schip in d,e praktijk vastgesteld, dat onder vergelijkbare omstandigheden een _ · schroef volgens de uitvinding, die drie schroefbladen bevatte, een aan- , 20 merkelijke verbetering van het voortstuvingsrendement oplevert ten op- zichte van een identieke schroef, eehter zonder perforaties in de schroefbladen en zonder de aanvezigheid van een kanaal in de naaf van de schroef. De rendementsverbetering onder de gekozen proefomstan— digheden vas afhankelijk van het toerental van de schroef, in die zin 25 dat na het doorlopen van een maximum het rendement bij verdere verho-ging van het toerental afnam. Gemeten naar de snelheid kon in het toerentalbereik van 250-350 rpm met de schroef volgens de uitvinding een verbetering vorden vastgesteld van ongeveer 8-6¾; naar de trekkracht van ongeveer 39-16¾ terwijl bij berekening van het brandstofverbruik 30 als functie van de snelheid de schroef volgens de uitvinding ten op-zichte van de normale schroef een verbetering te zien gaf van gefiiddeld ^ J ca. 7 si I De uitvinding vordt aan de hand van de tekening, die een *8105275 • *~- -3- . * uitvoeringsvoorbeeld van de scheepsschroef volgens de uitvinding in * » axiaal aanzicht van de luwtezijde af toont, nader toegelicht. Daarbij geeft 1 een hoi schroefblad aan, dat evenwijdigaan de trekkerslijn 5 de perforaties 2 hevat. Het schroefblad is verbonden met de naaf 3 voor-5 zien van het kanaal U, dat het stmeijdegebied van de schroef verhindt met de holle rnimte van het schroefblad.It has been established experimentally with the aid of a ship in practice that, under comparable conditions, a propeller according to the invention, containing three propeller blades, yields a noticeable improvement in the propulsion efficiency compared to an identical propeller , without any perforations in the propeller blades and without the presence of a channel in the hub of the propeller. The efficiency improvement under the chosen test conditions depends on the speed of the screw, in the sense that after a maximum has passed, the efficiency decreases with a further increase in speed. Based on the speed, an improvement of about 8-6¾ could be observed in the speed range of 250-350 rpm with the screw according to the invention; to the tensile force of approximately 39-16¾, while in calculating the fuel consumption 30 as a function of the speed, the propeller according to the invention showed an improvement over the average propeller compared to the normal propeller. on the basis of the drawing, which is a * 8105275 • * ~ - -3-. * illustrative embodiment of the ship's propeller according to the invention in axial view from the lee side, explained in more detail. 1 indicates a hi screw blade which, parallel to the tractor line 5, has perforations 2. The propeller blade is connected to the hub 3 front-5 of the channel U, which connects the stiffening area of the propeller to the hollow space of the propeller blade.
Uiteraard kunnen aan de scheepsschroef zoals in het voren-staande beschreven en in de tekening getoond is, vijzigingen vorden aangebracht zonder dat men daarbij het kader van de uitvinding verlaat. 10 Zo kunnen vorm en aantaJL van de perforaties, de vorm van de holte in een schroefblad alsmede vorm en afmetingen van het kanaal door de naaf vorden aangepast teneinde de stromingsveerstand voor het recirculerende vater te verminderen.Naturally, modifications can be made to the ship's propeller as described above and shown in the drawing without leaving the scope of the invention. For example, the shape and number of the perforations, the shape of the cavity in a screw blade, and the shape and dimensions of the channel can be adjusted through the hub to reduce the flow resistance for the recirculating water.
i t » 8105275i t »8105275
Claims (3)
Priority Applications (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8105275A NL8105275A (en) | 1981-11-20 | 1981-11-20 | SHIP SCREW, PROVIDED WITH TWO OR MORE PERFORATED HOLLOW BLADES. |
| DK508982A DK508982A (en) | 1981-11-20 | 1982-11-16 | SHIP SCREW |
| GB08232712A GB2110307B (en) | 1981-11-20 | 1982-11-16 | A ship's propellor having two or more perforated hollow blades |
| NO823840A NO823840L (en) | 1981-11-20 | 1982-11-17 | SHIP PROPELLER WITH TWO OR MORE THROUGH HOLE BLADE |
| GR69843A GR76737B (en) | 1981-11-20 | 1982-11-17 | |
| FI823935A FI823935L (en) | 1981-11-20 | 1982-11-17 | FARTYGSPROPELLER MED TVAO ELLER FLERA PERFORERADE, IHAOLIGA BLAD |
| IT2430182A IT1153059B (en) | 1981-11-20 | 1982-11-17 | PROPELLER FOR SHIP HAVING TWO OR MORE PERFORATED CAVE BLADES |
| DE19823242589 DE3242589A1 (en) | 1981-11-20 | 1982-11-18 | SHIP SCREW, PROVIDED WITH TWO OR SEVERAL PERFORATED CAVES |
| SE8206578A SE8206578L (en) | 1981-11-20 | 1982-11-18 | VESSEL PROPELLERS WITH AT LEAST TWO PERFORED SHEETS |
| FR8219454A FR2516890A1 (en) | 1981-11-20 | 1982-11-19 | VESSEL PROPELLER HAVING TWO OR MORE PERFORATED HOLLOW BLADES |
| IE2759/82A IE53509B1 (en) | 1981-11-20 | 1982-11-19 | A ship's propellor having two or more perforated hollow blades |
| PT7587282A PT75872B (en) | 1981-11-20 | 1982-11-19 | Ship's propellor having two or more perforated hollow blades |
| ES1982275637U ES275637Y (en) | 1981-11-20 | 1982-11-19 | A SHIP PROPELLING PROPELLER |
| BE2/59917A BE895081A (en) | 1981-11-20 | 1982-11-22 | SHIP SCREW, PROVIDED WITH TWO OR MORE PERFORATED HOLLOW BLADES. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8105275 | 1981-11-20 | ||
| NL8105275A NL8105275A (en) | 1981-11-20 | 1981-11-20 | SHIP SCREW, PROVIDED WITH TWO OR MORE PERFORATED HOLLOW BLADES. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL8105275A true NL8105275A (en) | 1983-06-16 |
Family
ID=19838424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL8105275A NL8105275A (en) | 1981-11-20 | 1981-11-20 | SHIP SCREW, PROVIDED WITH TWO OR MORE PERFORATED HOLLOW BLADES. |
Country Status (14)
| Country | Link |
|---|---|
| BE (1) | BE895081A (en) |
| DE (1) | DE3242589A1 (en) |
| DK (1) | DK508982A (en) |
| ES (1) | ES275637Y (en) |
| FI (1) | FI823935L (en) |
| FR (1) | FR2516890A1 (en) |
| GB (1) | GB2110307B (en) |
| GR (1) | GR76737B (en) |
| IE (1) | IE53509B1 (en) |
| IT (1) | IT1153059B (en) |
| NL (1) | NL8105275A (en) |
| NO (1) | NO823840L (en) |
| PT (1) | PT75872B (en) |
| SE (1) | SE8206578L (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPO620197A0 (en) * | 1997-04-14 | 1997-05-08 | Leung, Chi Keung | Extra byte propeller |
| AU708767C (en) * | 1997-04-14 | 2002-08-29 | Chi Keung Leung | Improved fluid displacing blade |
| AU2002355362B2 (en) | 2001-08-08 | 2005-02-03 | Robin David Shaw | Cavitation alleviation and line cutting device |
| GB0222466D0 (en) | 2002-09-27 | 2002-11-06 | Marine Current Turbines Ltd | Improvements in rotor blades and/or hydrofoils |
| GB0617828D0 (en) | 2006-09-11 | 2006-10-18 | Ambassador Marine Ltd | Line cutter |
| AU2006233263B2 (en) * | 2006-10-02 | 2012-05-03 | Aon Invent Llc | Safety propeller |
| RU2539870C1 (en) * | 2013-09-30 | 2015-01-27 | Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Дальневосточный Федеральный Университет" (Двфу) | Propeller screw |
| CN105221321A (en) * | 2014-06-25 | 2016-01-06 | 上海电气风电设备有限公司 | The open blade structure of ocean current power generation unit inner chamber |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE17146C (en) * | FR. WREDE in Duisburg, Crefelderstr. 20 | Ship propellers with hollow wings, the cavity of which communicates with the surrounding water | ||
| GB191206468A (en) * | 1912-03-15 | 1912-05-23 | Wynford Brierley | Improvements in Propellers and Fans. |
| US1604994A (en) * | 1925-08-31 | 1926-11-02 | Patrick P Grosso | Propeller |
| US1666517A (en) * | 1927-01-25 | 1928-04-17 | Tully Edward Ernest | Propelling device for ships |
| GB291281A (en) * | 1927-10-29 | 1928-05-31 | William Lovis | Improvements in or relating to ships' propellers |
| GB400913A (en) * | 1932-01-29 | 1933-11-02 | Louis Jauch | Improvements in hydraulic or aerial propellers or receivers |
| GB396716A (en) * | 1932-02-08 | 1933-08-08 | Edward Ernest Tully | Improvements in or relating to ships' propellers |
| US2511156A (en) * | 1946-08-07 | 1950-06-13 | Richard J Glass | Propeller |
| GB1200162A (en) * | 1966-05-24 | 1970-07-29 | Robert Filmer Bridgland | Improvements in blades for screw-propellers and lifting rotors |
| NL7803906A (en) * | 1978-04-12 | 1979-10-16 | Noordvos Schroeven Bv | METHOD, DEVICE AND PROPELLER FOR DISTRIBUTING A GAS, POWDER OR LIQUID MATERIAL IN A LIQUID. |
-
1981
- 1981-11-20 NL NL8105275A patent/NL8105275A/en not_active Application Discontinuation
-
1982
- 1982-11-16 DK DK508982A patent/DK508982A/en not_active Application Discontinuation
- 1982-11-16 GB GB08232712A patent/GB2110307B/en not_active Expired
- 1982-11-17 IT IT2430182A patent/IT1153059B/en active
- 1982-11-17 GR GR69843A patent/GR76737B/el unknown
- 1982-11-17 FI FI823935A patent/FI823935L/en not_active Application Discontinuation
- 1982-11-17 NO NO823840A patent/NO823840L/en unknown
- 1982-11-18 DE DE19823242589 patent/DE3242589A1/en not_active Withdrawn
- 1982-11-18 SE SE8206578A patent/SE8206578L/en not_active Application Discontinuation
- 1982-11-19 IE IE2759/82A patent/IE53509B1/en unknown
- 1982-11-19 ES ES1982275637U patent/ES275637Y/en not_active Expired
- 1982-11-19 FR FR8219454A patent/FR2516890A1/en not_active Withdrawn
- 1982-11-19 PT PT7587282A patent/PT75872B/en unknown
- 1982-11-22 BE BE2/59917A patent/BE895081A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2516890A1 (en) | 1983-05-27 |
| SE8206578D0 (en) | 1982-11-18 |
| BE895081A (en) | 1983-05-24 |
| IE822759L (en) | 1983-05-20 |
| GR76737B (en) | 1984-08-30 |
| IE53509B1 (en) | 1988-11-23 |
| PT75872A (en) | 1982-12-01 |
| DE3242589A1 (en) | 1983-05-26 |
| IT8224301A1 (en) | 1984-05-17 |
| IT1153059B (en) | 1987-01-14 |
| PT75872B (en) | 1985-01-09 |
| NO823840L (en) | 1983-05-24 |
| FI823935A0 (en) | 1982-11-17 |
| ES275637Y (en) | 1984-10-01 |
| GB2110307B (en) | 1985-01-30 |
| IT8224301A0 (en) | 1982-11-17 |
| FI823935L (en) | 1983-05-21 |
| SE8206578L (en) | 1983-05-21 |
| ES275637U (en) | 1984-03-01 |
| GB2110307A (en) | 1983-06-15 |
| DK508982A (en) | 1983-05-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CNR | Transfer of rights (patent application after its laying open for public inspection) |
Free format text: WOLFARD & WESSELS B.V. |
|
| A85 | Still pending on 85-01-01 | ||
| BV | The patent application has lapsed |