EP3188965A1 - Verstellpropeller - Google Patents
VerstellpropellerInfo
- Publication number
- EP3188965A1 EP3188965A1 EP15757285.0A EP15757285A EP3188965A1 EP 3188965 A1 EP3188965 A1 EP 3188965A1 EP 15757285 A EP15757285 A EP 15757285A EP 3188965 A1 EP3188965 A1 EP 3188965A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic fluid
- variable pitch
- propeller
- pitch propeller
- water
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H3/00—Propeller-blade pitch changing
- B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
- B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H3/00—Propeller-blade pitch changing
- B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
- B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
- B63H3/081—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid actuated by control element coaxial with the propeller shaft
- B63H3/082—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid actuated by control element coaxial with the propeller shaft the control element being axially reciprocatable
- B63H2003/084—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid actuated by control element coaxial with the propeller shaft the control element being axially reciprocatable with annular cylinder and piston
Definitions
- the invention relates to a variable pitch propeller with a hub, at least one propeller blade and a hydraulic adjustment device for adjusting the increase of the at least one propeller blade by means of a hydraulic fluid.
- variable pitch propellers are used in particular in ships to select the propulsion regardless of the speed of the marine engine can. Propeller propellers are therefore particularly advantageous when the feed often changes.
- the invention has for its object to reduce disadvantages in the prior art.
- variable pitch propeller in which the hydraulic fluid is hydrophilic and in particular at least predominantly, in particular at least substantially exclusively, consists of water.
- variable pitch propeller This increases the availability of a ship that is equipped with the variable pitch propeller invention. It is a further advantage that the variable pitch propeller according to the invention is easy to maintain. During operation of the adjusting device wear leads to the accumulation of particles in the hydraulic fluid. The hydraulic fluid must therefore be replaced at regular intervals. The use of hydrophilic hydraulic fluid such as water makes it easy to replace the hydraulic fluid.
- the hydraulic adjusting device is understood in particular to mean that device by means of which the adjusting device angle, which is decisive for the pitch of the propeller blade, is adjustable.
- the adjusting device preferably comprises a pressurized water source for discharging pressurized water.
- the pressure of the hydraulic fluid which is built up by the pressurized water source is at least 5 bar, in particular at least 50 bar.
- a hydrophilic hydraulic fluid is meant, in particular, a fluid which is miscible with water in any ratio.
- the fluid comprises at least 70% by weight of water and alcohols.
- the hydraulic fluid for fish is nontoxic up to a concentration of 0.1% by weight. This is understood in particular to mean that the zero effect concentration, ie the concentration at which no fish dies within 24 hours, is at least 0.1% by weight.
- the hydraulic fluid is biodegradable. This is understood to mean, in particular, that it complies with the modified OECD Screening Test OECD 301 E.
- the hydraulic fluid is at least 80% by weight water.
- the water it is possible for the water to contain additives, for example corrosion inhibitors and / or an antifreeze.
- additives for example corrosion inhibitors and / or an antifreeze.
- the higher the water content the sooner leakage into the environment can be tolerated.
- the hydraulic fluid contains no substances toxic to aquatic organisms. This is to be understood in particular that an introduction of hydraulic fluid into the water is possible without endangering the aquatic life. It is particularly favorable if the hydraulic fluid is at most
- the at least one propeller blade is at least also mounted on the hub by means of a solid lubricant element and / or self-lubricating on the hub. This prevents a release of petroleum products into the water.
- the hydraulic adjusting device comprises a piston coupled to the at least one propeller blade, the propeller blade actuable by pressurizing the piston with hydraulic fluid, and a transfer device for translating longitudinal movement of the piston into rotational movement of the at least one propeller blade the transfer device is self-lubricating.
- the transfer device comprises no lubricant, in particular no mineral oil-containing lubricant. It is particularly favorable if all components of the variable pitch propeller which are at the same axial height as the hub are free of lubricants based on mineral oil. In particular, these components are self-lubricating.
- the axial height refers to the axis of rotation of the hub.
- variable pitch propeller An advantage of such a variable pitch propeller is that impurities of the surrounding water can be excluded with mineral oil products.
- FIG. 2a shows a schematic view of a variable pitch propeller according to the invention according to a first embodiment
- FIG. 2b shows the principle of a variable pitch propeller according to a second embodiment
- FIG 3 shows a cross section through a variable pitch propeller according to the invention.
- FIG. 1 schematically shows a cross-section through a ship 10 according to the invention, which has a ship propulsion system 12 which comprises a propulsion engine 14 in the form of a ship's diesel engine and a variable pitch propeller 16.
- the variable pitch 16 be sitting a hub 18 and a first propeller blade 20.1, a second propeller blade 20.2 and other propeller blades, which are not shown in Figure 1.
- the propeller blades 20.1, 20.2 are variable by means of a hydraulic adjusting device 22 in pitch.
- the slope is given by a setting angle ⁇ .
- FIG. 1 also shows a rudder system 24 of the ship 10.
- the adjusting device 22 has a pressurized water distributor 26, which is part of a pressurized water supply device 27 and is connected to a schematically illustrated pressurized water source 28 so that provided by the pressurized water source 28 and pressurized hydraulic fluid 29 in the form of water to a piston 30 in the Hub of the variable pitch propeller 16 can be delivered.
- a pressurized water distributor 26 which is part of a pressurized water supply device 27 and is connected to a schematically illustrated pressurized water source 28 so that provided by the pressurized water source 28 and pressurized hydraulic fluid 29 in the form of water to a piston 30 in the Hub of the variable pitch propeller 16 can be delivered.
- FIG. 2 a shows a variable-displacement propeller 16 according to the invention, in which the piston 30 is arranged in a hydraulic cylinder 32 within the hub 18. If the pressurized water distributor 26 acts on a first partial volume 34 of the hydraulic cylinder 32, the setting angle ⁇ increases.
- the piston 30 is made of corrosion resistant material, such as bronze and / or corrosion resistant steel.
- FIG. 2b shows an alternative embodiment of a variable pitch propeller 16, in which the hydraulic cylinder 32 and thus the piston 30 are arranged outside the hub 18.
- the piston 30 is connected to a piston rod 38 which passes through a shaft 40 and actuates the propeller blades 20.
- the marine propulsion system 12 comprises a cooler 42, by means of which the hydraulic fluid 29 can be cooled.
- the radiator 42 in the present embodiment is a heat exchanger connected to the cooling water circuit of the vessel 10.
- a temperature monitoring device in the form of a temperature sensor 44
- the temperature T of the hydraulic fluid is continuously determined. If the temperature exceeds 60 ° C, a warning signal is output, for example in the form of an electrical signal that encodes the fact that the temperature is too high. Alternatively, the warning signal causes the radiator 42 to more strongly cool the hydraulic fluid. This prevents heating to a temperature significantly above 60 ° C and avoids vapor bubbles.
- FIG. 3 shows the structure of the hub 18 in cross section with more details.
- a transfer device 41 by means of which the longitudinal movement of the piston 30 is converted into the rotational movement of the propeller blades 20.
- the hydraulic fluid 29 in the present embodiment has the following composition: 15% by weight of ethylene glycol as antifreeze and 85% by weight of water.
- the water may be, for example, drinking water or seawater.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Lubricants (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15757285.0T PL3188965T5 (pl) | 2014-09-02 | 2015-09-02 | Nastawna śruba napędowa |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014012766.4A DE102014012766B4 (de) | 2014-09-02 | 2014-09-02 | Verstellpropeller |
| PCT/EP2015/070074 WO2016034639A1 (de) | 2014-09-02 | 2015-09-02 | Verstellpropeller |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3188965A1 true EP3188965A1 (de) | 2017-07-12 |
| EP3188965B1 EP3188965B1 (de) | 2019-06-12 |
| EP3188965B2 EP3188965B2 (de) | 2024-12-04 |
Family
ID=54035252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15757285.0A Active EP3188965B2 (de) | 2014-09-02 | 2015-09-02 | Verstellpropeller |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP3188965B2 (de) |
| DE (2) | DE102014012766B4 (de) |
| DK (1) | DK3188965T4 (de) |
| ES (1) | ES2744488T5 (de) |
| FI (1) | FI3188965T4 (de) |
| PL (1) | PL3188965T5 (de) |
| WO (1) | WO2016034639A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020134740A1 (de) | 2020-12-22 | 2022-06-23 | Otto Piening Schiffspropeller Und Wellenanlagen Gmbh | Verstellpropeller |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE666385C (de) * | 1936-10-14 | 1938-10-18 | Karlstad Mekaniska Ab | Nabe mit in ihr gelagerten, waehrend des Betriebes verdrehbaren Schaufeln fuer Wasserturbinen, Pumpen oder Schiffsschrauben |
| US3412808A (en) * | 1967-10-06 | 1968-11-26 | Thompson Wendell L | Variable pitch propeller for boat |
| US3778187A (en) | 1971-04-13 | 1973-12-11 | Propulsion Systems Inc | Controllable pitch propellers for marine vessels |
| GB2140096B (en) * | 1983-05-13 | 1987-04-29 | Wilfred Thomas Bellew | Marine propeller pitch control system |
| DE102006045077A1 (de) | 2006-09-21 | 2008-03-27 | Air Fertigung-Technologie Gmbh & Co.Kg | Schiffsantrieb mit einem Verstellpropeller |
-
2014
- 2014-09-02 DE DE102014012766.4A patent/DE102014012766B4/de not_active Revoked
-
2015
- 2015-09-02 DE DE202015009960.2U patent/DE202015009960U1/de not_active Expired - Lifetime
- 2015-09-02 PL PL15757285.0T patent/PL3188965T5/pl unknown
- 2015-09-02 EP EP15757285.0A patent/EP3188965B2/de active Active
- 2015-09-02 WO PCT/EP2015/070074 patent/WO2016034639A1/de not_active Ceased
- 2015-09-02 ES ES15757285T patent/ES2744488T5/es active Active
- 2015-09-02 DK DK15757285.0T patent/DK3188965T4/da active
- 2015-09-02 FI FIEP15757285.0T patent/FI3188965T4/fi active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016034639A1 (de) | 2016-03-10 |
| DE102014012766A1 (de) | 2016-03-03 |
| EP3188965B2 (de) | 2024-12-04 |
| DK3188965T3 (da) | 2019-09-02 |
| PL3188965T3 (pl) | 2019-12-31 |
| DE202015009960U1 (de) | 2022-02-07 |
| FI3188965T4 (fi) | 2025-01-28 |
| PL3188965T5 (pl) | 2025-03-17 |
| EP3188965B1 (de) | 2019-06-12 |
| ES2744488T3 (es) | 2020-02-25 |
| DK3188965T4 (da) | 2025-03-03 |
| ES2744488T5 (en) | 2025-03-20 |
| DE102014012766B4 (de) | 2017-03-30 |
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