Resistance reduction device suitable for catamaran

Abstract

The utility model belongs to the technical field of twin-hull ships, and particularly relates to a drag reduction device suitable for a twin-hull ship, which comprises a first hull, a second hull, a connecting bridge arranged between the first hull and the second hull, a first diversion trench arranged on the outer side of the first hull, a partition component arranged at the bottom of the connecting bridge, and a circulation cavity arranged at the bottom of the connecting bridge. The separating assembly is specifically composed of a fixing plate, a supporting plate, a buffering assembly, a second flow guide groove and a supporting piece, the supporting plate is arranged at the bottom of the fixing plate, and the buffering assembly is arranged on the outer side of the supporting plate. Through the first diversion trench, the separation assembly, the buffer assembly, the second diversion trench and the circulation cavity, water flow is smoother when passing through the ship body, large waves are avoided, the process that the water flow passes through the circulation cavity is smoother and more stable, the drag reduction effect of the catamaran is more stable, the drag reduction structure is simple, complex maintenance is not needed, and the cost is reduced. Extra power supply is not needed, and energy consumption and maintenance cost are effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of catamaran technology, specifically to a drag reduction device suitable for catamarans. Background Technology

[0002] A catamaran is a vessel consisting of two separate underwater hulls connected by a reinforcing frame. Each hull houses a main engine and a propeller. The strong frame connecting the two hulls is called the connecting bridge, which contains numerous compartments. Catamarans offer advantages such as good stability, safety, comfort, and maneuverability, and are commonly used as small to medium-sized passenger ships and ferries. However, they have a complex structure, a short rolling period, and a relatively weak mid-hull structure. They are not suitable for long-distance ocean voyages because the unique structure of a catamaran results in a greater weight and higher water resistance during navigation. Generally, drag-reducing devices are applied to catamarans.

[0003] The existing technology has the following shortcomings: Application number 202210343007.8 proposes a drag reduction device, a catamaran, and a drag reduction method suitable for catamarans. Its main components include: a ventilation chamber installed on the catamaran; an air supply unit supplying gas to the ventilation chamber; and multiple vent holes through which the ventilation chamber releases gas. These vent holes are distributed on the outer wall of the catamaran and are in contact with water. The present invention provides a drag reduction device, a catamaran, and a drag reduction method suitable for catamarans, which helps reduce the water resistance experienced by the catamaran during navigation, effectively increasing its speed. Furthermore, it has a simple structure and is easy to assemble.

[0004] When the above-mentioned equipment is in use, it reduces resistance by opening air holes on the outer wall of the hull and venting. However, due to the large distance between the two sides of the catamaran, venting on the side can easily interfere with the water flow between the hulls, disturb the flow field around the hull, and cause resistance fluctuations. This poses a risk of increasing eddy current or wave resistance, and the resistance reduction effect is unstable. In addition, it is necessary to equip an air storage tank to provide the main air source, which greatly increases energy consumption and equipment maintenance costs. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a drag reduction device suitable for catamarans to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drag reduction device suitable for catamarans, comprising a first hull and a second hull, wherein a connecting bridge is provided between the first hull and the second hull, a first guide groove is provided on the outer side of the first hull, a separation component is provided at the bottom of the connecting bridge, and a flow cavity is provided at the bottom of the connecting bridge.

[0007] The separation component is specifically composed of a fixed plate, a support plate, a buffer component, a second flow guide channel, and a support member. The fixed plate is provided with a support plate at its bottom, the support plate is provided with a buffer component on its outer side, the buffer component is provided with a second flow guide channel on its outer side, and the buffer component is provided with a support member on its inner wall.

[0008] As a preferred technical solution of this utility model: the first hull and the second hull are connected by a connecting bridge, and there are several sets of the first guide channel. The first guide channel is provided on the outer side of both the first hull and the second hull.

[0009] As a preferred technical solution of this utility model: there are several sets of the separating components and they are fixedly installed at the bottom of the connecting bridge, and a flow cavity is formed between adjacent separating components.

[0010] As a preferred technical solution of this utility model: the support plate is fixedly installed at the bottom of the fixed plate, and the buffer assembly is sleeved on the support plate and fixed to the bottom of the fixed plate.

[0011] As a preferred technical solution of this utility model: the buffer component is specifically made of silicone rubber, and a second guide groove is provided on the outer side of the buffer component.

[0012] As a preferred technical solution of this utility model: the support members are evenly distributed on the inner wall of the buffer assembly, and the support members and the buffer assembly are integrally formed.

[0013] As a preferred technical solution of this utility model: the outer end of the support member is in contact with the support plate, and the first guide groove and the second guide groove are both serpentine grooves.

[0014] Compared with the prior art, this utility model provides a drag reduction device suitable for catamarans, which has the following beneficial effects:

[0015] 1. This drag reduction device for catamarans comprises a first guide channel, a separating component, a buffer component, a second guide channel, and a flow cavity. The first guide channel guides water flow along the hull surface, making the water flow smoother as it passes over the hull. The separating component divides the water flow between the first and second hulls into multiple parts, reducing the swaying amplitude of the water flow between the first and second hulls and preventing the generation of large waves. When the water flows through the flow cavity, the buffer component is pressured by the water and indents towards the support plate, thus buffering the water pressure. The second guide channel guides the water flow through the flow cavity, making the process of the water flow through the flow cavity smoother and reducing the resistance of the water flow between the first and second hulls. The drag reduction effect of the catamaran is more stable.

[0016] 2. This drag reduction device for catamarans, by setting a first guide channel, a separator component, a fixing plate, a support plate, and a buffer component, makes the water flow smoother when passing through the outside of the catamaran and between the first and second hulls. The separator component reduces the swaying amplitude of the water flow between the first and second hulls to achieve the drag reduction effect. The drag reduction structure is simple, does not require complex maintenance, does not require additional power supply, and effectively reduces energy consumption and maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the flow cavity and the first guide groove of this utility model;

[0018] Figure 2 This is a schematic diagram of the separator component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the support structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the hull structure of this utility model.

[0021] In the figure: 1. First hull; 2. Second hull; 3. Connecting bridge; 4. First guide channel; 5. Separation assembly; 501. Fixing plate; 502. Support plate; 503. Buffer assembly; 504. Second guide channel; 505. Support component; 6. Flow cavity. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 In this embodiment: a drag reduction device suitable for catamarans includes a first hull 1 and a second hull 2, a connecting bridge 3 is provided between the first hull 1 and the second hull 2, a first guide groove 4 is provided on the outer side of the first hull 1, a separation component 5 is provided at the bottom of the connecting bridge 3, and a flow cavity 6 is provided at the bottom of the connecting bridge 3.

[0024] The first hull 1 and the second hull 2 ​​can be connected by the connecting bridge 3. The water flow can be guided along the surface of the hull by the first guide channel 4, making the water flow smoother when passing over the hull and reducing the formation of turbulence and eddies.

[0025] The separator component 5 is specifically composed of a fixed plate 501, a support plate 502, a buffer component 503, a second flow channel 504, and a support member 505. The fixed plate 501 is provided with a support plate 502 at its bottom, the support plate 502 is provided with a buffer component 503 on its outer side, the buffer component 503 is provided with a second flow channel 504 on its outer side, and the buffer component 503 is provided with a support member 505 on its inner wall.

[0026] The support plate 502 ensures the stability of the separator component 5, and the fixing plate 501 facilitates the fixed installation of the separator component 5 at the bottom of the connecting bridge 3.

[0027] In this embodiment, the first hull 1 and the second hull 2 ​​are connected by a connecting bridge 3. There are several sets of first guide channels 4. The first guide channels 4 are opened on the outer side of both the first hull 1 and the second hull 2. There are several sets of separation components 5 and they are fixedly installed at the bottom of the connecting bridge 3. A flow cavity 6 is formed between adjacent separation components 5. The support plate 502 is fixedly installed at the bottom of the fixed plate 501. The buffer component 503 is sleeved on the support plate 502 and fixed to the bottom of the fixed plate 501.

[0028] Specifically, the water flow between the first hull 1 and the second hull 2 ​​can be divided into multiple parts by the separating component 5, reducing the swaying amplitude of the water flow between the first hull 1 and the second hull 2 ​​and avoiding the generation of large waves.

[0029] In this embodiment, the buffer component 503 is specifically made of silicone rubber. A second guide groove 504 is provided on the outer side of the buffer component 503. The support member 505 is evenly distributed on the inner wall of the buffer component 503. The support member 505 and the buffer component 503 are integrally formed. The outer end of the support member 505 contacts the support plate 502. The first guide groove 4 and the second guide groove 504 are both serpentine grooves.

[0030] Specifically, the buffer component 503 can buffer the pressure of water on the separation component 5 when the water flows through the flow chamber 6.

[0031] The working principle and usage of this utility model are as follows: In actual use, during the catamaran's movement in water, the first guide channel 4 on the outer side of the first hull 1 and the second hull 2 ​​can change the flow pattern of water along the sides of the hull. The first guide channel 4 can guide the water flow along the hull surface, making the water flow smoother as it passes over the hull, reducing the formation of turbulence and eddies, and lowering resistance. For the water flow between the first hull 1 and the second hull 2, the separating component 5 can divide the water flow between the first hull 1 and the second hull 2 ​​into multiple parts, reducing the swaying amplitude of the water flow between the first hull 1 and the second hull 2. To avoid the generation of large waves, the water pressure will squeeze the buffer component 503 when the water flows through the flow cavity 6. The buffer component 503, made of silicone rubber, deforms under the force and indents in the direction of the support plate 502, which can buffer the water pressure. At the same time, the second guide channel 504 can guide the water flow through the flow cavity 6, making the process of water flow through the flow cavity 6 smoother and reducing the water flow resistance between the first hull 1 and the second hull 2. The drag reduction effect of the catamaran is more stable. At the same time, the drag reduction structure is simple, does not require complex maintenance, and does not require additional power supply, effectively reducing energy consumption and maintenance costs.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A drag reduction device suitable for catamarans, comprising a first hull (1), a second hull (2), characterized in that: The first hull (1) and the second hull (2) are provided with a connecting bridge (3), the first hull (1) is provided with a first flow guide groove (4) outside, the bottom of the connecting bridge (3) is provided with a separation assembly (5), and the bottom of the connecting bridge (3) is provided with a flow cavity (6). The separation assembly (5) is specifically composed of a fixed plate (501), a supporting plate (502), a buffer assembly (503), a second flow guide groove (504) and a supporting piece (505), the bottom of the fixed plate (501) is provided with the supporting plate (502), the outer side of the supporting plate (502) is provided with the buffer assembly (503), the outer side of the buffer assembly (503) is provided with the second flow guide groove (504), and the inner wall of the buffer assembly (503) is provided with the supporting piece (505).

2. A drag reduction device for a catamaran as claimed in claim 1, wherein: The first hull (1) and the second hull (2) are connected through the connecting bridge (3), a plurality of groups of the first flow guide groove (4) are arranged, and the first flow guide groove (4) is arranged outside the first hull (1) and the second hull (2).

3. A drag reduction device for a catamaran as claimed in claim 1, wherein: A plurality of groups of the separation assembly (5) are fixedly installed at the bottom of the connecting bridge (3), and the flow cavities (6) are formed between adjacent separation assemblies (5).

4. A drag reduction device for a catamaran as claimed in claim 1, wherein: The supporting plate (502) is fixedly installed at the bottom of the fixed plate (501), and the buffer assembly (503) is sleeved on the supporting plate (502) and fixed to the bottom of the fixed plate (501).

5. A drag reduction device for a catamaran as claimed in claim 1, wherein: The buffer assembly (503) is made of silicone rubber, and the buffer assembly (503) is provided with the second flow guide groove (504) outside.

6. A drag reduction device for a catamaran as claimed in claim 1, wherein: The supporting pieces (505) are uniformly distributed on the inner wall of the buffer assembly (503), and the supporting pieces (505) and the buffer assembly (503) are integrally formed.

7. A drag reduction device for a catamaran as claimed in claim 1, wherein: The outer ends of the supporting pieces (505) are in contact with the supporting plate (502), and the first flow guide groove (4) and the second flow guide groove (504) are both serpentine grooves.

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