CN113619724A

CN113619724A - Low-resistance ship

Info

Publication number: CN113619724A
Application number: CN202111046211.5A
Authority: CN
Inventors: 杨云涛; 张启航; 梁树炎; 董洪友; 陆安; 刘庆森; 李国勇; 高慧
Original assignee: Jiangsu University of Science and Technology
Current assignee: Jiangsu University of Science and Technology
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2021-11-09
Anticipated expiration: 2041-09-07
Also published as: CN113619724B

Abstract

The invention provides a low-resistance ship, which comprises a ship body, wherein two separated single ship bodies are arranged at the bottom of the ship body, and a lifting mechanism is also arranged between the two single ship bodies; the lifting mechanism comprises a plurality of lifting components which are arranged at intervals along the axial direction of the ship body, and each lifting component comprises a cylindrical lifting body and driving equipment for driving the lifting body to rotate; two ends of the lifting body are respectively and rotatably arranged on the two single ship bodies, and the driving device is arranged in the single ship body. The low-resistance ship provided by the invention is a novel composite ship type with low resistance and high wave resistance, and the ship body can be lifted out of the water surface by utilizing the lifting force of the lifting body in the sailing process of the ship, so that the wet surface area of the ship body is reduced, and the friction force is reduced. By utilizing the wave-absorbing function of the lifting body, favorable wave system interference can be generated with the ship body, so that the wave-making resistance of the ship body is reduced; on the other hand, the stability of the ship body enables the occurrence of side turning accidents to be reduced when the ship fast navigates, and two purposes are achieved at one stroke.

Description

Low-resistance ship

Technical Field

The invention relates to the technical field of ships, in particular to a low-resistance ship.

Background

When the ship sails, the wave-making resistance is generated because part of the ship body is immersed in water. When the ship sails, the water surface generates waves, a group of wave systems respectively generate near the bow and the stern, and each group of wave systems comprises transverse waves and scattered waves. The transverse wave is approximately vertical to the course, the wave divergence is oblique to the course, the energy of the ship wave fluctuation is supplied by the ship body, and part of the power for propelling the ship is consumed. It is equivalent to overcome a certain resistance for the ship, and the resistance is called wave-making resistance. Therefore, wave-making resistance causes more energy consumption for driving the ship to operate, and energy waste is caused.

Disclosure of Invention

The invention aims to provide a low-resistance ship to solve the technical problems in the background technology.

In order to achieve the aim, the invention provides a low-resistance ship which comprises a ship body, wherein two separated single ship bodies are arranged at the bottom of the ship body, and a lifting mechanism is arranged between the two single ship bodies;

the lifting mechanism comprises a plurality of lifting assemblies which are arranged at intervals along the axial direction of the ship body, and each lifting assembly comprises a cylindrical lifting body and driving equipment for driving the lifting body to rotate; two ends of the lifting body are respectively and rotatably arranged on the two single ship bodies, and the driving device is arranged in the single ship bodies.

Optionally, the lifting body is rotatably mounted on the single hull through a sealing bearing seat, the sealing bearing seat is fixedly mounted on the single hull through a bolt, and the lifting body is hermetically connected with the single hull through a first sealing ring.

Optionally, the lifting body is a cavity structure with one end hermetically arranged and the other end openly arranged, the open end of the lifting body is connected with an end cover hermetically and rotatably, the end cover is connected with a liquid inlet pipe and a liquid outlet pipe which are communicated with the inside of the lifting body, and the other end of the liquid outlet pipe is connected with the fuel oil system of the ship body.

Optionally, the end cover is rotatably mounted on the open end of the lifting body through a seal bearing, and is sealed with the lifting body through a second seal ring.

Optionally, the liquid inlet pipe and the liquid outlet pipe are hard pipelines, and the liquid inlet pipe and the liquid outlet pipe are fixedly installed in the single ship body.

Optionally, a reinforcing rib extending along the axial direction is arranged on the inner wall of the lifting body.

Optionally, a wave-proof structure is further disposed inside the lifting body, and the wave-proof structure includes a plurality of wave-proof tubes that are sequentially sleeved and concentrically disposed; one end of the wave-proof tube is welded on the sealing end of the lifting body, and the wave-proof tube and the lifting body are concentrically arranged.

Optionally, the inner wall of the wave-proof tube is provided with a convex edge which extends spirally along the axial direction of the wave-proof tube and is used for guiding the flow to the open end of the lifting body.

Optionally, a hemispherical protrusion is concentrically arranged on the inner side wall of the end cover, the protrusion is of a hollow structure, an oil passing hole penetrates through the protrusion, and the oil passing hole extends along the protrusion in the radial direction.

Optionally, the driving device includes a motor and a gear set, and the motor is in transmission connection with the sealing end of the lifting body through the gear set.

According to the low-resistance ship provided by the invention, the plurality of lift assemblies are arranged between the two single hulls of the ship body, the lift bodies of the lift assemblies can rotate at a high speed, and can generate a certain lift force during the navigation of the ship to lift the main ship body of the ship body out of the water surface, so that the underwater volume of the single hull is reduced, and the purpose of reducing resistance is achieved.

The lifting body of the lifting assembly is driven by the driving device to rotate at a high speed, so that the lifting body can be suitable for the ship at a low sailing speed.

In conclusion, the low-resistance ship provided by the invention is a novel composite ship type with low resistance and high wave resistance, and the ship body can be lifted out of the water surface by utilizing the lifting force of the lifting body in the sailing process of the ship, so that the wet surface area of the ship body is reduced, and the resistance is reduced. By utilizing the wave-absorbing function of the lifting body, favorable wave system interference can be generated with the ship body, so that the wave-making resistance of the ship body is reduced; on the other hand, the stability of the ship body enables the occurrence of side turning accidents to be reduced when the ship fast navigates, and two purposes are achieved at one stroke.

Besides, the ship resistance is reduced, fuel consumed by an engine is reduced, the effects of energy conservation and emission reduction can be achieved to a certain extent, the pollution to the environment is reduced, and the concept of green ships is met. The lifting body has relatively large volume, and can load marine fuel oil therein to improve the loading capacity. The ship body has small wave making resistance which is only 60 percent of that of a monohull ship, is suitable for high-speed navigation and can greatly save navigation time by matching with a lifting body.

Drawings

Fig. 1 is a schematic structural diagram of a low resistance ship provided in an embodiment of the present invention;

FIG. 2 is a schematic view of an installation structure of a lift assembly of a low-resistance ship provided by the embodiment of the invention;

fig. 3 is a schematic view of an installation structure of a lifting body and an end cover of a low-resistance ship according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional structural view of a lifting body and an end cover of a low-resistance ship according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a lifting body of a low-resistance ship provided by the embodiment of the invention;

fig. 6 is a schematic structural diagram of an end cover of a low-resistance ship according to an embodiment of the present invention.

Detailed Description

The following describes in more detail embodiments of the present invention with reference to the schematic drawings. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

As shown in fig. 1-6, the low-resistance ship provided by this embodiment includes a hull 1, two separate single hulls 2 are disposed at the bottom of the hull 1, and a lift mechanism is further disposed between the two single hulls 2. The lifting mechanism comprises a plurality of lifting assemblies which are arranged along the axial direction of the ship body 1 at intervals, and each lifting assembly comprises a cylindrical lifting body 3 and driving equipment for driving the lifting body 3 to rotate. Two ends of the lifting body 3 are respectively and rotatably arranged on the two single ship bodies 2, and the driving device is arranged in the single ship bodies 2.

When the lifting body 3 rotates at a high speed, the movement direction of the fluid at the upper end of the lifting body 3 is the same as the movement direction of the ship, and the movement direction of the fluid at the lower end of the lifting body 3 is opposite to the movement direction of the ship, so that the movement speed of the fluid at the upper end of the lifting body 3 is higher than that of the fluid at the lower end of the lifting body 3. Because the place that the speed is big, pressure intensity is little on the contrary, and the place that the speed is little is powerful. Therefore, pressure difference is generated on the upper end surface and the lower end surface of the lifting body 3, and an upward force is generated on the lifting body 3 due to the fact that the pressure intensity of the lower end surface is larger, so that a part of the ship body can be lifted upwards, the wet surface area of the ship body is reduced, and the resistance is reduced.

Specifically, the lifting body 3 is rotatably mounted on the single hull 2 through a sealing bearing seat 4, the sealing bearing seat 4 is fixedly mounted on the single hull 2 through a bolt, and the lifting body 3 is hermetically connected with the single hull 2 through a first sealing ring 5. The lifting body 3 is rotatably sealed by the first seal ring 5, and external water is prevented from flowing into the single hull 2.

Further, the lifting body 3 is a cavity structure with one end hermetically arranged and the other end openly arranged, the opening end of the lifting body 3 is hermetically and rotatably connected with an end cover 6, the end cover 6 is connected with a liquid inlet pipe 7 and a liquid outlet pipe 8 which are communicated with the inside of the lifting body 3, and the other end of the liquid outlet pipe 8 is connected with a fuel oil system of the ship body 1. The lifting body 3 is of a cavity structure, fuel oil can be stored in the lifting body 3, and the loading capacity of the ship is improved.

The end cover 6 is rotatably mounted on the open end of the lifting body 3 through a sealing bearing 9 and is sealed with the lifting body 3 through a second sealing ring 10. The rotary seal is formed between the end cover 6 and the lifting body 3 through the second sealing ring 10, so that fuel oil is prevented from seeping out, and the end cover 6 is kept stable when the lifting body 3 rotates. The liquid inlet pipe 7 and the liquid outlet pipe 8 are hard pipelines, and the liquid inlet pipe 7 and the liquid outlet pipe 8 are fixedly arranged in the single ship body 2.

To reinforce the structural strength of the lifting body 3, ribs 11 extending in the axial direction are provided on the inner wall of the lifting body 3.

In-process of the rotatory work of axial is followed to the body of lift 3, the fuel in the body of lift 3 can be under the effect of centrifugal force 3 inner wall directions of lift motion to cause the impact to 3 inner walls of the body of lift, and because the diameter of the body of lift 3 is great, when the body of lift 3 starts, can cause the eccentric rotation of the body of lift 3 because of the undulant of inside fuel, thereby cause the impact to the hull structure of whole boats and ships. In order to avoid the impact of fuel oil on the inner wall of the lifting body 3 under the action of centrifugal force, the lifting body 3 is also internally provided with a wave-proof structure, the wave-proof structure comprises a plurality of wave-proof tubes 12 which are sequentially sleeved and concentrically arranged, one end of each wave-proof tube 12 is welded on the sealing end of the lifting body 3, and each wave-proof tube 12 and the lifting body 3 are concentrically arranged. Through a plurality of wave-proof tubes 12 that establish in proper order, set up with one heart, the fuel can be stored between two adjacent wave-proof tubes 12, and when the lifting body 3 was rotatory, the fuel only can be undulant between two adjacent wave-proof tubes 12 to the fuel was to the inside impact of lifting body 3 when effectively having reduced lifting body 3 rotatory.

The inner wall of the wave-proof tube 12 is provided with a convex edge 13 which extends spirally along the axial direction of the wave-proof tube 12 and is used for guiding the flow to the open end of the lifting body 3. The in-process of the body of lift 3 at high-speed rotation, fuel can be to the 3 inner wall directions of body of lift motion under the effect of centrifugal force, leads to the fuel to hardly flow to drain pipe 8 when the body of lift 3 is rotatory, consequently need set up the bead 13 to the opening end water conservancy diversion of the body of lift 3, with fuel direction drain pipe 8 one side, does not need the body of lift 3 stall also can the fuel feeding when needs fuel feeding.

Further, during high-speed rotation of the lifting body 3, fuel can flow towards the open end of the lifting body 3 under the guidance of the convex ribs 13, so that the end cover 6 needs to bear fuel impact. In order to reduce the impact borne by the end cover 6, a hemispherical protrusion 14 is concentrically arranged on the inner side wall of the end cover 6, the protrusion 14 is of a hollow structure, an oil passing hole 15 penetrates through the protrusion 14, and the oil passing hole 15 extends along the radial direction of the protrusion 14. The fuel can flow into the protrusion 14 through the oil passing hole 15 and then into the liquid outlet pipe 8.

Optionally, the driving device includes a motor 16 and a gear set 17, the motor 16 is in transmission connection with the sealing end of the lifting body 3 through the gear set 17, and the motor 16 drives the gear set 17 to drive the lifting body 3 to rotate at a high speed.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A low resistance ship, includes hull (1), hull (1) bottom is provided with single hull (2) of two separations, its characterized in that: a lifting mechanism is also arranged between the two single ship bodies (2);

the lifting mechanism comprises a plurality of lifting assemblies which are arranged along the axial direction of the ship body (1) at intervals, and each lifting assembly comprises a cylindrical lifting body (3) and driving equipment for driving the lifting body (3) to rotate; the two ends of the lifting body (3) are respectively rotatably arranged on the two single ship bodies (2), and the driving equipment is arranged in the single ship bodies (2).

2. A low drag craft as claimed in claim 1 wherein: the lifting body (3) is rotatably installed on the single ship body (2) through a sealing bearing seat (4), the sealing bearing seat (4) is fixedly installed on the single ship body (2) through a bolt, and the lifting body (3) is connected with the single ship body (2) in a sealing mode through a first sealing ring (5).

3. A low drag craft as claimed in claim 1 wherein: the lift body (3) is a cavity structure with one end sealed and the other end opened, the open end of the lift body (3) is connected with an end cover (6) in a sealing and rotating manner, the end cover (6) is connected with a liquid inlet pipe (7) and a liquid outlet pipe (8) which are communicated with the interior of the lift body (3), and the other end of the liquid outlet pipe (8) is connected with a fuel oil system of the ship body (1).

4. A low drag craft as claimed in claim 3 wherein: the end cover (6) is rotatably arranged on the open end of the lifting body (3) through a sealing bearing (9) and is sealed with the lifting body (3) through a second sealing ring (10).

5. A low drag craft as claimed in claim 3 wherein: the liquid inlet pipe (7) and the liquid outlet pipe (8) are hard pipelines, and the liquid inlet pipe (7) and the liquid outlet pipe (8) are fixedly installed in the single ship body (2).

6. A low drag craft as claimed in claim 3 wherein: and a reinforcing rib (11) extending along the axial direction is arranged on the inner wall of the lifting body (3).

7. A low drag craft as claimed in claim 3 wherein: the interior of the lifting body (3) is also provided with a wave-proof structure, and the wave-proof structure comprises a plurality of wave-proof tubes (12) which are sequentially sleeved and concentrically arranged; one end of the wave-proof tube (12) is welded on the sealing end of the lifting body (3), and the wave-proof tube (12) and the lifting body (3) are concentrically arranged.

8. A low drag craft as claimed in claim 7 wherein: the inner wall of the wave-proof tube (12) is provided with a convex edge (13) which extends spirally along the axial direction of the wave-proof tube (12) and is used for guiding the flow to the open end of the lifting body (3).

9. A low drag craft as claimed in claim 8 wherein: hemispherical bulges (14) are concentrically arranged on the inner side wall of the end cover (6), the bulges (14) are of a hollow structure, oil passing holes (15) penetrate through the bulges (14), and the oil passing holes (15) extend along the radial directions of the bulges (14).

10. A low drag craft as claimed in claim 1 wherein: the driving device comprises a motor (16) and a gear set (17), wherein the motor (16) is in transmission connection with the sealing end of the lifting body (3) through the gear set (17).