WO2017108255A1

WO2017108255A1 - Propeller for a ship

Info

Publication number: WO2017108255A1
Application number: PCT/EP2016/077096
Authority: WO
Inventors: Markus Deeg; Oscar Hellemann; Thorben Kriews
Original assignee: Siemens Aktiengesellschaft
Priority date: 2015-12-23
Filing date: 2016-11-09
Publication date: 2017-06-29
Also published as: DE102015226672A1

Abstract

The invention relates to a propeller (1) having a propeller blade (2, 3), which has a shape (11) for forming an interlocking connection. A dovetail joint (11, 12), for example, is provided for forming the interlocking connection. A propeller drive has a propeller and a propeller shaft (14), which are connected to each other by means of a dovetail joint. The propeller drive is provided for driving a seagoing ship.

Description

description

Propeller for a ship The invention relates to a propeller for a ship, in particular a seagoing ship, such as e.g. a container ship or a passenger ship. Furthermore, the invention relates to a propeller shaft, a propeller drive and a method for producing a propeller drive.

Propellers can be connected to shaft systems or to azimuthal propulsion systems for ships by means of an oil press dressing. The larger the propeller, the more difficult it is to manufacture and / or assemble it.

An object of the invention is to provide a propeller and a propeller drive which can overcome the above-mentioned Prob ^¬ lems. A solution of the problem is achieved in a propeller according to claim 1, in a propeller shaft according to claim 11, in a propeller drive according to claim 13 or in a method for producing a propeller drive according to claim 16. Further embodiments will become apparent according to claims 2 to 10, 12th , 14, 15, 17 and 18.

A propeller can be built in several parts. The propeller has segments which can be arranged in a circle. For various reasons, it may be useful to assemble a propeller from several individual components.

These include:

• a simplified transport by lower Einzelabmes ^¬ solutions and / or individual masses,

• better handling due to smaller dimensions

and / or individual masses and / or

• replacement of individual components in case of damage during operation. The assembly of the individual components (propeller hub and Propel ^¬ lerflügel) by means of screw connection. However, this can ^mean that the propeller hub has a high wall ^thickness .

An assembly of the individual components (propeller hub and Propel ^¬ ler wing) for example by means of screw. The joined components can then be applied to the propeller shaft in their entirety, corresponding to a one-piece propeller, by means of an oil press bandage, feather key connection or other shaft-hub connections.

A propeller can also be designed such that it has at least one propeller blade which has a shape for forming a positive connection. Thus, the propeller blade can be connected in an interlocking manner, for example with a Na ^¬ be and / or a shaft.

If the propeller blade has a shape that makes it possible to produce a positive connection between the propeller blade and a hub and / or shaft, then a compact propeller can be formed. This can be influences ^¬ the effective surface propellers and / or propeller hub ratio positive.

In one embodiment of the propeller, at least two segments form a propeller blade. So a big ^¬ SSSR propeller blades can be produced by small Einhei ^¬ th (segments), which are easy to produce.

In one embodiment of the propeller of this has a much ^¬ number of propeller blades which are arranged in particular concen ^¬ driven. The concentric arrangement relates to the axis of the shaft, wherein the shaft is, for example, Ro door shaft of an electrical machine, the like to a Ge ^¬ gear mounted drive shaft, the drive shaft connected to a diesel engine or the like. By means of the shaft connected to the propeller, for example, a see- going ship such as a freighter, a container ship, a cruise ship, a frigate, a cruiser, a destroyer, a patrol boat or a submarine. In one embodiment of the propeller, the latter has a ^large number of propeller blades, which are arranged in particular eccentrically. The eccentric arrangement of play relates to the axis of the shaft and / or the mounting surface of the propeller blades at ^¬.

In one embodiment of the propeller, a tongue and groove connection is provided to form the positive connection. In a further embodiment of the propeller, a dovetail connection is provided to form the positive connection. The connection of propeller and shaft (propeller shaft) can thus be made by means of a dovetail joint. For this purpose, a hub segment can be formed directly on a single or several propeller blades. The hub segment forms a circle segment. On the wave-side inner surface of the hub segment of a part of the dovetail connection is formed, on the outside of the propeller shaft (or a hub shell on the propeller shaft) is the corresponding counterpart. The dovetail joint has a dovetail and a mounting groove. The dovetail is at ^¬ example on the propeller blades and the mounting groove on the shaft. However, this can also be the other way round. The propeller blades with the form for forming the dovetail joint are joined axially as individual components or together along the dovetail joint, preferably in the axial direction of the propeller shaft. Thus, the propeller can be performed with a lower wall thickness due to be signed ^¬ design of the propeller, which in turn contributes to a hydrodynamically more favorable shape. In this way the hydrodynamic efficiency can be increased wel ^¬ ches resulting inter alia in a reduced fuel consumption. In one embodiment of the propeller is the positive connection between the propeller blades. Thus, an increased stability between the propeller blades can be achieved. Again, a dovetail connection is possible lent.

In one embodiment of the propeller, the positive connection between at least one propeller blade and a propeller shaft is provided. Thus, the moment of the shaft can be transmitted to the propeller simply by the positive connection.

In one embodiment of the propeller, these segments have, wherein these are in particular positioned concentrically about an axis of the shaft.

In one embodiment, the propeller has a Propellerflü ^¬ gel with a segment of a plurality of blades. For example, the segments are first connected to one another in a shipyard. This reduces problems when transporting large propellers.

In one embodiment of the propeller is between two segments with at least one blade a blade-free segment ment. At least one segment is therefore not a shovel.

This is necessary, for example, if you want to keep the segments small but the radial extent of the propeller blades or blades is comparatively large. In one embodiment of the propeller has these segments, which are different in size. The different segments thus cover, for example, differently sized circular sections. For example, with 6 segments it is possible that 3 larger segments each cover a circle segment of 100 degrees and 3 smaller segments one each

Circular section of 20 degrees. For example, the three larger circular sections each have at least one propeller blade. The For example, three smaller circle sections have no propeller blades. The totality of the segments is 360 degrees.

In one embodiment of the propeller, these segments of different sizes with or without blades, the

Segments the propeller blades are individually balanced or be ^¬ balanced individually. This increases the smoothness of the drive and also reduces, for example, the load on bearings, which can extend their life.

In one embodiment of the propeller this is designed as Nabenkappenpropeller, wherein the individual segments or propeller blades form the Nabenkappenpropeller. A propeller shaft may be formed such that it has a shape for forming a positive connection. The shape is, for example, a dovetail or a mounting groove for receiving a dovetail ^¬ zes. The shape for forming a positive connection of the propeller shaft corresponds to the shape for forming a positive connection of the propeller. Thus, between the propeller shaft and propeller a firm connection Herge ^¬ provides are. In this case, the propeller can be made in one piece or in several parts. Various embodiments of the process described above-or below Pellers are in particular ^¬ sondere be further illustrated by the description of the figures.

A propeller drive has at least one propeller. Furthermore, the propeller drive can have a propeller shaft (shaft). The shaft is mechanically coupled, for example with a Getrie ^¬ be, a diesel engine and / or an electrical machine.

If the propeller parts such as the propeller blades are fitted directly onto the propeller shaft without an intermediate sleeve, additional assembly steps are eliminated. When the Schwalbenschwanzverbin ^¬ dung is executed correspondingly conically, to Selbiger can by the up ^¬ brin account the thrust loads of the propeller, strengthen Press ker in the positive connection and secure yourself accordingly, which is especially true for a thrust propeller. This is especially true when the shaft is designed according to the cone on the propeller seat. As an additional security, the individual Propellerflü ^¬ gel forming segments as the propeller, additionally be connected to one another by corresponding form-fit can.

The use of positive connections in a propeller drive can bring various advantages. By reducing assembly costs, the installation costs can be reduced. A lower pitch of the propeller results in a reduction in material costs due to material savings. The design of the propeller also allows an increase in the efficiency of the propeller by an enlarged effective propeller surface. This can lead to ei ^¬ ner fuel savings at the same power or to an increase in performance with the same fuel consumption. A smaller mass of the propeller and thus the Antriebsan ^¬ position of the ship is used for example, maximizing sought by a ship operator, maximum payload. If the hub diameter of the propeller is reduced, a hydrodynamically more favorable form of components flown by the propeller (for example on a POD drive) can be achieved, which in turn can achieve fuel savings with the same power or an increase in performance with the same fuel consumption.

In one embodiment of the propeller drive, two or more propellers may be arranged one behind the other on the propeller shaft. Thus, e.g. increase efficiency.

In one embodiment of the propeller drive is at least two propellers on a propeller shaft between at least a spacer. By the spacer, the flow behavior can be considered or improved.

The propeller drive can be used to drive a seagoing

Ship or an underwater vehicle be provided.

In a method for producing a propeller drive a propeller to a propeller shaft is connected, in particular a propeller of the type described is connected to a shaft of the type described (in particular is thus fitted), wherein the compound is in particular form-fitting ^¬. The propeller can be one-piece or multi-piece. The positive connection is for example a dovetail connection.

In addition or as an alternative to the dovetail connection, the propeller and / or the propeller blade and / or the blade can be shrunk onto the shaft and / or be connected to the shaft by means of an oil press dressing. By combining various methods of connection, the connection can be strengthened.

The invention will be illustrated below with reference to exemplary embodiments playing ^¬. Showing:

1 shows a first segmented propeller;

2 shows a second segmented propeller;

3 shows a first hub-shaft connection;

4 shows a sectional view of the hub-shaft connection according to FIG. 3;

5 shows a further view of the hub-shaft connection according to

FIG. 3;

6 is a perspective view of the hub-shaft

Compound according to FIG 3;

7 shows a second hub-shaft connection;

8 is a perspective view of the hub-shaft

Compound according to FIG. 7;

9 shows a first propeller blade; 10 shows a second propeller blade;

11 shows a shaft;

12 shows a third segmented propeller;

13 shows a fourth segmented propeller;

14 shows a fifth segmented propeller and

15 shows a sixth segmented propeller.

The illustration of FIG 1 shows a first segmented propeller 1 with a plurality of propeller blades 2, which are arranged concentrically. The propeller blades 2 have circular segments 5, 6, 7, 8, 9 and 10, which concentrically arranged forming a hub, and a respective blade 4. To attach the propeller blades to a shaft, as in a ship to the drive shaft, are to the Circular segments 5, 6, 7, 8, 9 and 10 dovetails 11 are present, which are to be inserted into fastening grooves of a shaft (not shown in FIG. 1). The propeller 1 according to FIG. 1 is designed in several parts with a multiplicity of circular segments. It is also possible to carry out the propeller in one piece, wherein this is not shown in FIG. In one embodiment, the dres ^¬ gene segments merge in effect a one-piece component, which has dove tails for mounting on a shaft. In the following figures, the same reference numerals are used in similar parts.

The illustration according to FIG. 2 shows a second segmented propeller with circular segments 5 to 10, wherein, in comparison to FIG. 1, each circular segment has two propeller blades 3. The number of propeller blades depends e.g. from the optimization criteria for the propeller.

The illustration according to FIG. 3 shows a first hub-shaft connection, the illustration of the blades being omitted here as well as in FIGS. 4 to 8 in order not to unnecessarily increase the complexity of the representation. The Dar ^¬ position according to FIG 3 shows the circular segments 5 to 10, and a connected thereto shaft 14. The connection takes place 11 through dovetails of Figure 3 is a section IV ge ^¬ shows, which is shown in FIG. 4

The illustration of FIG 4 shows a sectional view of the hub-shaft connection of FIG 3. The circle segments 6 and 9, as well as the remaining circular segments 5, 7, 8 and 10, not shown, are arranged concentrically about the axis 13.

The representation according to FIG 5 shows a further view of the Na-be-shaft connection according to FIG 3, being indicated by way of example by a break-off edge on the shaft 14 that the shaft further leads 14, for example, to a transmission, a diesel or egg ^¬ nem electric motor, these elements are not shown in FIG 5.

The illustration in FIG. 6 shows a perspective view of the hub-shaft connection according to FIG. 3 for better clarity. Here, as in other illustrations, it should be noted that the blades of the propeller are not shown.

The representation according to FIG 7 shows a second hub-shaft connection with sectors 5 to 10, wherein the elements are connected Kreisseg ^¬ fertilize not only to the shaft 14 down with Schwalbenschwanzverbin-, but with each other compounds having dovetails 11 may have. If the circle segments are not connected to one another, they can be individually placed on the fastening grooves of the shaft 14. If the circular segments 5 to 10 are connected to each other with dovetails 11, then a hub can be formed, which can then be pushed onto the shaft 14. The county ^¬ segments each have two adjacent segments of a circle. In order to connect the circular segments 5 to 10, a circular segment has a dovetail 11 for the first adjacent circular segment and a fastening groove for the second adjacent circular segment. The illustration according to FIG. 8 shows a perspective view of the hub-shaft connection according to FIG. 7 for a better understanding of the structure and the construction. 9 shows a first propeller blade 2 with its blade 4 and the circular segment 5. Circular segment 5 and blade 4 are made in one piece and, for example, of a brass alloy. Stringed circle segments form a hub.

The illustration according to FIG. 10 shows second propeller blade 2, which has dovetails 11 on the blade. The blade 4 can be plugged directly onto a shaft, oh ^¬ ne that a hub is to be formed by circle segments. The propeller blade with or without a segment of a circle have to verbes ^¬ serten mounting a plurality of dovetails. 11 This plurality of dovetails 11 of a propeller blade 2 are, for example, arranged in a circle, where ^¬ relates to this in particular only a circular section.

The illustration in Figure 11 shows a shaft 14 with Fixed To ^¬ gungsnuten 12, in which dovetails of Propellerflü ^¬ rules can be inserted. The representation of FIG 12 shows a third segmented propeller 1 with three propeller blades 2, which are arranged concentrically about a central axis. The propeller blades 2 according to FIG. 12 have a kidney shape. Between the circular segments 6, 8, and 10 are segments 15, 17 and 19, to which no blade for forming a Propellerflü ^¬ gel is.

The illustration according to FIG. 13 shows a fourth segmented propeller 1 with six propeller blades 2, which are arranged concentrically about a central axis. Also, the propeller ^¬ wing 2 according to FIG 13 have a kidney shape. Each of the segments 5, 6, 7, 8, 9 and 10 has a blade. The illustration according to FIG. 14 shows a fifth segmented propeller 1 with three propeller blades 2, which are arranged concentrically around a central axis. Between the circle segments ^¬ 6, 8, and 10 are segments 15, 16, 17, 18, 19 and 20, to which no blade to form a propeller blade is. The intermediate segments 15, 16, 17, 18, 19 and 20 without a blade are smaller than the segments with blade. The intermediate segments 15, 16, 17, 18, 19 and 20 de ^¬ CKEN ie from each having a smaller circular portion, when the segments 6, 8 and 10 of the propeller blades. 2

The illustration according to FIG. 15 shows a sixth segmented propeller 1 with three propeller blades 3, which are arranged concentrically around a central axis. The propeller ^¬ wings 3 of FIG 15 each have two blades 21 and 22 with the segments 5, 6 and 7 per segment. A propeller blade 3 thus has, according to FIG. 15, exactly one segment 6 and two blades 21 and 22.

Claims

claims

1. Propeller (1) with a propeller blade (2,3), which egg ^¬ ne form (11) for forming a positive connection.

2. Propeller (1) according to claim 1 with a plurality of propeller blades (2,3), which are arranged concentrically.

3. Propeller (1) according to claim 1 or 2, wherein a tongue and groove connection is provided for the formation of the positive connection.

4. Propeller (1) according to claim 1 or 2, wherein a dovetail joint (11,12) is provided for forming the positive connection.

5. Propeller (1) according to one of claims 1 to 4, wherein the positive connection between the propeller blades (2,3).

6. Propeller (1) according to one of claims 1 to 5, wherein the positive connection between at least one propeller blade (2,3) and a propeller shaft (14) is provided.

7. Propeller (1) according to one of claims 1 to 6, wherein these segments (5,6,7,8,9,10) and in particular blades

(4,21,22). 8. Propeller (1) according to claim 7, wherein a propeller blades

(2) with a segment (5,6,7,

8, 9, 10) has a plurality of blades ^¬ (4, 21, 22).

9. Propeller (1) according to claim 7 or 8, wherein between two segments (5,6,7,8,9,10) with at least one blade

(4,21,22) is a vane-free segment (15,16,17,18,19,20), wherein the segments (5,6,7,8,9,10,15,16,17,18,19 , 20) insbeson ^¬ particular of different size.

10. Propeller (1) according to one of claims 1 to 9, wherein the propeller (1) is a Nabenkappenpropeller.

11. propeller shaft (14) which has a shape (11) for forming a positive connection.

12. propeller shaft (14) according to claim 11, wherein the mold (11) adapted to form the positive connection of a form of a propeller according to one of claims 1 to 7.

13. Propeller drive, which has a propeller (1) according to one of claims 1 to 10.

14. propeller drive according to claim 13, which has a Propel ^¬ lerwelle (14) according to claim 11 or 12.

15. Propeller drive according to claim 13 or 14, which is provided for driving a seagoing ship or an underwater vehicle.

16. A method for producing a propeller drive, wherein a propeller according to one of claims 1 to 7 with a propeller shaft (14) is connected.

17. The method of claim 16, wherein a propeller shaft (14) according to claim 8 or 9 is used.

18. The method of claim 16 or 17, wherein the propeller (1) is shrunk onto the propeller shaft (14).