CN220164150U

CN220164150U - Ship propeller and ship

Info

Publication number: CN220164150U
Application number: CN202321676248.0U
Authority: CN
Inventors: 徐明辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2023-12-12
Anticipated expiration: 2033-06-28

Abstract

The utility model relates to a ship propeller, which relates to the technical field of propellers and comprises a rotating body connected with external power transmission, wherein a plurality of propelling blades are circumferentially distributed on the rotating body, the ends of the propelling blades are sequentially provided with a bending transition part and a water cutting part along the direction away from the rotating center of the propelling blades, and an acute angle formed between the direction of cutting the water cutting part into the water surface and the water surface is 45-80 degrees. The utility model can improve the propulsion efficiency. The utility model also relates to a ship body with the ship propeller, which comprises the ship propeller, a ship body, a power unit arranged in the ship body, and a transmission connection between the power unit and a rotator, wherein the rotation axis of the rotator is vertical to the advancing direction of the ship body. The utility model can improve the propulsion efficiency of the ship body.

Description

Ship propeller and ship

Technical Field

The utility model relates to the technical field of propellers, in particular to a propeller for a ship.

Background

Open ships were once very popular in the steamer age, but it is a low speed and low efficiency type of ship, which has long been replaced by propeller propelled ships, which is a consensus for the person skilled in the art; the modern ship types capable of running quickly comprise a planing boat and a hydrofoil boat, and the propulsion mode of the modern ship types mainly comprises a propeller; when the ship sails at a high speed, the planing boat or the hydrofoil respectively depend on the dynamic pressure or the lifting force of water to support the gravity, and most of the ship body is lifted to reduce the water resistance; however, with the increase of the navigational speed, the propeller rotating at high speed has great torsion and cavitation phenomena to waste energy, and the propulsion efficiency is greatly reduced, so that a higher-power engine is required to be arranged to change the high speed with high energy consumption, and the economical efficiency is extremely poor for the propeller yacht to realize high-speed navigational.

Moreover, when the propeller yacht encounters surge during sudden acceleration sailing or high-speed sailing, the ship body is extremely easy to pitch up and even cause turning over, so that the stability and the wave resistance are poor, and meanwhile, the propeller can cause turbulence in the rotating process, so that energy is extremely wasted. In addition, in the running process of the ship adopting the screw propeller, the resistance of water to the ship is great, the sailing speed of the ship is influenced, namely, the ratio of the forward thrust obtained by the ship through the screw propeller to the power consumed by driving the screw propeller to rotate at a high speed is not reached even 40%, that is, the power of an engine on the ship is wasted by about 70%, and the power is required to be improved.

Disclosure of Invention

In order to improve propulsion efficiency, the present utility model provides a marine propeller.

The utility model provides a ship propeller which adopts the following technical scheme:

the utility model provides a marine propeller, includes the rotor of being connected with external power transmission, circumference distributes on the rotor has a plurality of propulsion blade, the tip of propulsion blade has set gradually crooked transition portion and cuts water portion along the direction of keeping away from its rotation center, the acute angle that forms between the direction of cutting the water portion into the surface of water and the surface of water is between 45 degrees to 80 degrees.

By adopting the technical scheme, in actual use, when the rotor rotates to the position that the water cutting part cuts into the water surface, because the acute angle formed between the direction that the water cutting part cuts into the water surface and the water surface is between 45 degrees and 80 degrees, when the water cutting part enters into the water, the water cutting part can enter into the water in a cutting mode, and can not directly enter into the water in a beating mode, the reaction force generated by the water surface to the propelling blades is greatly reduced, which is equivalent to the non-resistance water inlet in the water surface, then the propelling blades are transited into the water by the bending transition part, at the moment, the propelling blades play the function of water-scratching, namely, before each propelling blade plays the function of water-scratching, the water inlet is scratched on the water surface in a minimum resistance or non-resistance mode by the water cutting part, so that the resistance generated when each propelling blade enters into the water is reduced, the loss of energy consumption is caused, and the propelling function is realized by the way of scratching the water flow by each propelling blade, and the speed and the efficiency of any ship structure in the sailing process are improved.

Preferably, the two surfaces of the propelling blade are respectively provided with a water pushing side and a water backing side, and the water pushing side is provided with an inward concave cambered surface.

Through adopting above-mentioned technical scheme, the side that pushes away of impelling the blade is indent cambered surface setting, has increased the area of contact with rivers, increases impelling the efficiency that the blade stroked rivers.

Preferably, the back water side is provided with a slow flow guide surface.

Through adopting above-mentioned technical scheme, utilize the slow flow guide face that the back water side set up, can lead the rivers that form the turbulence at the back water side after promoting to prevent that the surface of water is too disordered, be unfavorable for the propulsion function of drawing water next time.

Preferably, a transitional cambered surface is arranged between the water pushing side and the slow flow guide surface.

By adopting the technical scheme, the water flow can enter the slow flow guide surface in a steady flow state by utilizing the transitional cambered surface arranged between the water pushing side and the slow flow guide surface.

Preferably, a reinforcing structure is arranged between adjacent propelling blades on the rotating body.

Through adopting above-mentioned technical scheme, utilize the reinforced structure that sets up between the adjacent propulsion blade, improve the joint strength of propulsion blade each other.

Preferably, the propelling blade is provided with a plurality of reinforcing ribs on the water propelling side.

Through adopting above-mentioned technical scheme, utilize a plurality of reinforcement muscle bodies that set up on pushing away the water side, further strengthened the structural strength who advances blade self.

Preferably, the length direction of the reinforcing rib is parallel to the rotation axis of the rotator.

By adopting the technical scheme, the length direction of the reinforcing rib body and the rotation axis of the rotating body are arranged in parallel, so that the torsion resistance of the propelling blade in the length direction of the propelling blade can be improved.

The present utility model provides a ship having a ship propeller.

The technical scheme adopted by the ship is as follows:

a ship comprises a ship propeller, a ship body and a power unit arranged inside the ship body, wherein the power unit is in transmission connection with a rotator, and the rotation axis of the rotator is perpendicular to the advancing direction of the ship body.

By adopting the technical scheme, the ship propeller can greatly improve the sailing speed of the whole ship body and the efficiency of the ship body.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the water cutting part can be directly cut into the water surface, the resistance is small and can be almost ignored, then the bending transition part can enter the water, at the moment, the water cutting part and the bending transition part immediately play a role in paddle propulsion along with the continuous rotation of the rotating body, the counter force of paddle is completely horizontal thrust, meanwhile, although the propulsion blades can also receive the reverse impact resistance of the water surface, the reverse impact resistance is less than 10% of the thrust at the moment, namely, compared with the forward generated thrust, the resistance at the moment does not form larger loss, and the propulsion efficiency of the whole propeller can be greatly improved by sequentially circulating the thrust generated each time;

2. by means of the water pushing side arranged in the concave cambered surface and the reinforcing rib arranged on the water pushing side, the integral structural strength and the pushing efficiency of the pushing blade can be greatly improved.

Drawings

FIG. 1 is a schematic axial view of a marine propulsion system according to an embodiment of the present utility model;

FIG. 2 is a schematic view showing a use state of a marine propeller structure according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a marine propulsion system according to a second embodiment of the present utility model;

fig. 4 is a schematic structural view of a ship having a ship propeller according to an embodiment of the present utility model in a plan view.

Reference numerals: 1. a rotating body; 2. propelling the blade; 21. pushing water; 22. a back water side; 221. a slow flow guide surface; 23. a transitional cambered surface; 3. a curved transition portion; 4. a water cutting part; 5. a reinforcing structure; 6. reinforcing ribs; 7. a hull; 8. a power unit.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-4.

The embodiment of the utility model discloses a ship propeller.

Example 1

Referring to fig. 1, the marine propeller includes a rotor 1 connected to an external power transmission, a plurality of propulsion blades 2 are circumferentially distributed on the rotor 1, and in other embodiments of the present application, a corresponding number of propulsion blades 2 may be selected according to a required propulsion efficiency, in the embodiments of the present application, four propulsion blades 2 are circumferentially and uniformly distributed on the rotor 1, a curved transition portion 3 and a water cutting portion 4 are sequentially disposed at an end portion of any one propulsion blade 2 along a direction away from a rotation center of the rotor, an acute angle formed between a direction in which any one water cutting portion 4 cuts into a water surface and the water surface is between 45 degrees and 80 degrees, and in the embodiments of the present application, an acute angle formed between a direction in which the water cutting portion 4 cuts into the water surface and the water surface is set to 45 degrees.

Referring to fig. 1 and 2, in actual use, the rotor 1 drives the water cutting portion 4 of the propulsion blade 2 to enter the water surface under the action of external power, because the acute angle formed between the direction of the water cutting portion 4 cutting into the water surface and the water surface is set to 45 degrees, when the water cutting portion 4 just enters the water surface, the water cutting portion 4 enters in a cutting manner and does not directly enter the water in a beating manner, the reaction force of the water surface on the propulsion blade 2 is greatly reduced, the water cutting portion 4 is equivalent to a water inlet without resistance in the water surface, then the propulsion blade 2 is transited into the water by the bending transition portion 3, the water cutting portion 4 and the bending transition portion 3 immediately play the function of water-cutting propulsion, the reaction force of the water at this moment becomes the thrust in the horizontal direction completely, meanwhile, the propulsion blade 2 also receives reverse impact resistance, through multiple tests, the reverse impact resistance at this moment is less than 10% of the thrust at this moment, namely, compared with the forward thrust, the thrust generated at this moment, the resistance cannot form a loss, the thrust generated by circulation in turn can greatly improve the whole propulsion efficiency of the propulsion device and the performance of the ship in the course of the whole process.

Referring to fig. 1 and 2, the rotor 1 is fixed with a reinforcing structure 5 between adjacent propulsion blades 2 by means of welding or rivet connection or the like, that is, a hub structure formed between the rotor 1, the reinforcing structure and the propulsion blades 2 excluding an outer ring, to strengthen the connection strength between the adjacent propulsion blades 2.

The implementation principle of the ship propeller provided by the embodiment of the utility model is as follows:

in actual use, the water surface is located at the bottom of the reinforcing structure 5 in the vertical direction, the water cutting part 4 is firstly contacted with the water surface in a cutting mode, the water cannot directly enter the water in a beating mode, the reaction force generated by the water surface on the propelling blades 2 is greatly reduced, then the water cutting part 4 is free from resistance to scratch a water inlet in the water surface, then the propelling blades 2 are transited into the water by the bending transition part 3, the water cutting part 4 and the bending transition part 3 immediately play a role in water-scratching propulsion along with the rotation of the rotating body 1, the reaction force of scratching at the moment is completely horizontal thrust, meanwhile, the propelling blades 2 at the rear side of the transition bending part can be subjected to the reverse impact resistance of the water surface, through multiple tests, the reverse impact resistance at the moment is less than 10% of the thrust at the moment, no larger loss is formed, the thrust generated by sequential circulation each time can greatly improve the propelling efficiency of the whole propeller, and the speed and the efficiency of any ship structure in the navigation process can be improved.

Example 2

Referring to fig. 2 and 3, this embodiment is different from embodiment 1 in that,

with reference to fig. 2 and 3, since the structure of any one of the propulsion blades 2 is the same, one of the propulsion blades 2 will now be described as an example.

Referring to fig. 2 and 3, two surfaces of the propelling blade 2 in the thickness direction thereof are respectively provided as a water pushing side 21 and a water back side 22, the water pushing side 21 mainly plays a role of pushing water flow, the water back side 22 is symmetrically provided with a slow flow guiding surface 221, that is, a section between the two slow flow guiding surfaces 221 and the water pushing side 21 is formed into an isosceles triangle-like arrangement, and both the two slow flow guiding surfaces 221 and the water pushing side 21 are arranged in a concave cambered surface, and a transitional cambered surface 23 is arranged between the water pushing side 21 and the slow flow guiding surface 221.

Referring to fig. 2 and 3, the area in contact with water flow can be increased by utilizing the water pushing side 21 arranged on the concave cambered surface, so that the pushing function is improved; then the transition cambered surface 23 is utilized to transition the water flow to the two slow flow guiding surfaces 221, and the two slow flow guiding surfaces 221 arranged on the concave cambered surface can play a role in relieving and guiding the scratched water flow so as to prevent the water flow from being excessively disordered and influence the propelling efficiency of the next propelling blade 2.

Referring to fig. 2 and 3, a plurality of reinforcing ribs 6 are disposed on the concave cambered surface of any propulsion blade 2 on the water propulsion side 21 along the direction perpendicular to the rotation axis of the rotor 1, and the length direction of any reinforcing rib 6 is parallel to the rotation axis of the rotor 1, so that the structural strength of the propulsion blade 2 is greatly improved.

in the actual process of the sliding, the sliding water flow can be transited from the transitional cambered surfaces 23 on the two sides of the width direction of the pushing blade 2 to the two slow flow guiding surfaces 221, and the flow stabilizing effect is achieved on the water flow.

The embodiment of the utility model also discloses a ship with the ship propeller.

Referring to fig. 4, a ship having a ship propeller includes a hull 7, a power unit 8 provided inside the hull 7, and the ship propeller in the above-described application embodiment 1 or 2, the power unit 8 may be provided as a diesel power unit or a steam turbine power unit or a steam power unit or a new energy power unit or a nuclear power unit or the like in the related art, and the ship propeller may be connected to a final output unit by a transmission connection method in the related art, wherein the power unit 8 may be provided at a bow, and a rotation axis of a rotor 1 in the ship propeller is perpendicular to a forward direction of the hull 7, wherein the ship propeller may be provided as one, located at a center position of the hull 7 according to a model of the hull 7 and a navigation requirement of the hull 7; in the embodiment of the utility model, four ship propellers are arranged in pairs and distributed on a ship body 7 in a rectangular shape, and the four ship propellers are driven to operate by a power unit 8 through transmission connection in the related art; in other embodiments, a plurality of marine propulsion means may be provided, and the plurality of marine propulsion means may be provided on both sides in the width direction of the hull 7 and at the bow or stern, i.e., may be provided at a plurality of positions of the hull 7 at the same time.

The principle of implementation of a hull 7 with a marine propulsion means is:

the power output of the power unit 8 of the ship body 7 is utilized to drive the rotating body 1 to rotate, so that the whole propelling speed of the ship body 7 can be greatly improved under the high-efficiency propelling action of the ship propeller.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. A marine propeller, characterized in that: including rotor (1) be connected with external power transmission, circumference distributes on rotor (1) has a plurality of propulsion blade (2), the tip of propulsion blade (2) has set gradually crooked transition portion (3) and cuts water portion (4) along the direction of keeping away from its rotation center, the acute angle that forms between the direction of cutting into the surface of water and the surface of water of cutting water portion (4) is between 45 degrees to 80 degrees.

2. A marine propeller as claimed in claim 1, wherein: the two surfaces of the propelling blade (2) are respectively provided with a water pushing side (21) and a water backing side (22), and the water pushing side (21) is arranged in a concave cambered surface.

3. A marine propeller as claimed in claim 2, wherein: the back water side (22) is provided with a slow flow guide surface (221).

4. A marine propeller as claimed in claim 3, wherein: a transitional cambered surface (23) is arranged between the water pushing side (21) and the slow flow guide surface (221).

5. A marine propeller as claimed in claim 4, wherein: a reinforcing structure (5) is arranged between adjacent propelling blades (2) on the rotating body (1).

6. A marine propeller as claimed in claim 5, wherein: the propelling blade (2) is provided with a plurality of reinforcing ribs on the water propelling side (21).

7. The marine propeller of claim 6, wherein: the length direction of the reinforcing rib body is parallel to the rotation axis of the rotating body (1).

8. A ship, characterized in that: comprising the marine propulsion means of claim 5, a hull (7) and a power unit (8) arranged inside the hull (7), said power unit (8) being in driving connection with the rotor (1) and the axis of rotation of said rotor (1) being perpendicular to the direction of advance of the hull (7).