Bubble resistance reduction device and ship

Abstract

The utility model belongs to the technical field of ship resistance reduction devices, and discloses a bubble resistance reduction device and a ship. The bubble drag reduction device comprises a gas generator, a bubble generator and a bubble breaker. The gas generator can generate compressed gas. The bubble generator is installed at the bottom of the ship and communicates with the gas generator, and compressed gas generates first bubbles through the bubble generator to be discharged. And the bubble breaker is positioned at the downstream of the bubble generator and is communicated with the bubble generator. The bubble breaker has an open state and a closed state, when the bubble breaker is in the open state, the first bubbles are broken into second bubbles through the bubble breaker, and the second bubbles flow into the bottom of the ship; when the bubble breaker is in a closed state, the first bubbles are directly discharged and flow into the bottom of the ship, the universality is high, and the drag reduction effect is good; structural operation is simple, and cost is low. The ship comprises a ship body and the bubble drag reduction device, and the bubble drag reduction device is located at the bottom of the ship body, so that the ship is high in overall operation efficiency and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of ship drag reduction devices, in particular to a bubble drag reduction device and a ship. Background Art

[0002] Typically, when sailing, ships inject bubbles into the exterior of their vessels below the waterline to reduce friction between the ship and the water, thereby improving navigation efficiency. When sailing in open waters, where water resistance dominates, evenly distributed small bubbles offer superior drag reduction, improving the ship's operational efficiency. When sailing in icy waters, where ice resistance dominates, large bubbles can effectively reduce ice resistance, improving operational efficiency. However, existing bubble drag reduction systems can only produce bubbles of one size and cannot simultaneously meet the requirements for sailing in both open and icy waters.

[0003] Therefore, it is urgent to propose a bubble drag reduction device and a ship to solve the above problems. Utility Model Content

[0004] The first purpose of the utility model is to provide a bubble drag reduction device, which has high universality and good drag reduction effect; the structure is simple to operate and the cost is low.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The bubble drag reduction device comprises:

[0007] a gas generator capable of generating compressed gas;

[0008] a bubble generator, the bubble generator being installed at the bottom of the vessel and being in communication with the gas generator, the compressed gas being discharged by generating first bubbles through the bubble generator;

[0009] A bubble breaker is located downstream of the bubble generator and is connected to the bubble generator. The bubble breaker has an open state and a closed state. When the bubble breaker is in the open state, the first bubble is broken by the bubble breaker into a second bubble, and the second bubble flows into the bottom of the ship. When the bubble breaker is in the closed state, the first bubble is directly discharged and flows into the bottom of the ship.

[0010] As an optional technical solution of the bubble drag reduction device, the bubble generator is embedded in the ship.

[0011] As an optional technical solution for the bubble drag reduction device, the bubble generator includes a top plate, a side plate and a nozzle plate. The top plate is connected to the gas generator. The nozzle plate is located below the top plate. Nozzle holes are evenly arranged on the nozzle plate. The side plate connects the top plate and the nozzle plate. The top plate, the side plate and the nozzle plate are arranged to form a compression chamber. The compressed gas enters the compression chamber and is discharged from the nozzle hole to form the first bubble.

[0012] As an optional technical solution for the bubble drag reduction device, the aperture of the nozzle hole is 0.01m-0.1m.

[0013] As an optional technical solution for the bubble drag reduction device, the bubble generator also includes a partition, which is located in the compression chamber and divides the compression chamber into multiple chambers. The multiple chambers are evenly arranged along the length of the ship, and each chamber is connected to the gas generator.

[0014] As an optional technical solution for the bubble drag reduction device, the bubble breaker includes a baffle, which is connected to the outer periphery of the nozzle plate. When the bubble breaker is in the open state, the nozzle plate and the baffle form a crushing chamber, and the first bubble can be interrupted and crushed by the water flow entering the crushing chamber to form the second bubble, and the second bubble is discharged into the bottom of the ship; when the bubble breaker is in the closed state, the baffle can be turned outward and flush with the bottom of the ship, and the first bubble is directly discharged into the bottom of the ship.

[0015] As an optional technical solution of the bubble drag reduction device, the compression chamber and the crushing chamber are both located near the bow of the ship.

[0016] As an optional technical solution of the bubble drag reduction device, the height H of the crushing chamber is less than 0.5m.

[0017] As an optional technical solution of the bubble drag reduction device, the gas generator includes an air compressor and an air pipe, and the air compressor is connected to the bubble generator through the air pipe.

[0018] A second object of the present invention is to provide a ship with high overall operating efficiency and low cost.

[0019] To achieve this purpose, the present invention adopts the following technical solutions:

[0020] A ship comprises a hull and the above-mentioned bubble drag reduction device, wherein the bubble drag reduction device is located at the bottom of the hull.

[0021] Beneficial effects of the utility model:

[0022] The bubble drag reduction device provided by the utility model comprises a gas generator, a bubble generator, and a bubble breaker. The gas generator generates compressed gas, which is then discharged through the bubble generator as a first bubble. The bubble breaker has an open and closed state. When the bubble breaker is in the open state, the first bubble is broken by the bubble breaker into a second bubble, which then flows into the bottom of the vessel. The second bubble is small in size, effectively reducing the vessel's drag and improving the vessel's operational efficiency when navigating in open waters. When the bubble breaker is in the closed state, the first bubble is discharged directly into the bottom of the vessel. The first bubble is large in size, effectively reducing the vessel's ice resistance and improving the vessel's operational efficiency when navigating in icy waters. Therefore, the bubble drag reduction device can selectively open or close the bubble breaker as needed, allowing either the large first bubble or the small second bubble to perform its drag reduction function. This increases the device's universality and improves its overall drag reduction effect, thereby enhancing the vessel's overall operational efficiency. Furthermore, the bubble size can be adjusted simply by opening or closing the bubble breaker, resulting in a simple structure and low manufacturing cost.

[0023] The ship provided by the utility model, because it is equipped with the above-mentioned bubble drag reduction device, can generate bubbles of two sizes, larger and smaller, so that the ship can meet the navigation requirements in open waters and icy waters at the same time, thereby making the overall operation efficiency of the ship high and the cost low. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a ship equipped with a bubble drag reduction device provided by an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the bubble drag reduction device provided by the embodiment of the utility model Figure 1 ;

[0026] Figure 3 This is a schematic diagram of the structure of the bubble drag reduction device provided by the embodiment of the utility model Figure 2 ;

[0027] Figure 4 It is a structural schematic diagram of the nozzle plate of the bubble drag reduction device provided in an embodiment of the present utility model.

[0028] In the picture:

[0029] 100, gas generator; 110, air compressor; 120, air duct; 200, bubble generator; 210, top plate; 220, side plate; 230, nozzle plate; 231, nozzle hole; 240, partition; 250, first bubble; 300, bubble breaker; 310, baffle; 320, second bubble. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0031] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0034] The bubble drag reduction device provided in this embodiment has high universality and good drag reduction effect; it has simple structure and operation and low cost.

[0035] Specific as Figures 1 to 3As shown, the bubble drag reduction device includes a gas generator 100, a bubble generator 200, and a bubble breaker 300. The gas generator 100 is capable of generating compressed gas. The bubble generator 200 is installed on the bottom of the ship and is connected to the gas generator 100. The compressed gas is discharged through the bubble generator 200 to generate first bubbles 250. The bubble breaker 300 is located downstream of the bubble generator 200 and is connected to the bubble generator 200. The bubble breaker 300 has an open state and a closed state. When the bubble breaker 300 is in the open state, the first bubble 250 is broken by the bubble breaker 300 into a second bubble 320, and the second bubble 320 flows into the bottom of the ship. When the bubble breaker 300 is in the closed state, the first bubble 250 is directly discharged and flows into the bottom of the ship.

[0036] It should be noted that the size of the first bubble 250 is larger than the size of the second bubble 320 .

[0037] Based on the above design, the gas generator 100 can generate compressed gas, which is then discharged through the bubble generator 200 as first bubbles 250. The bubble breaker 300 has an open and closed state. When the bubble breaker 300 is in the open state, the first bubbles 250 are broken by the bubble breaker 300 into second bubbles 320, which then flow to the bottom of the vessel. The small size of the second bubbles 320 effectively reduces the drag of the vessel, improving the vessel's operational efficiency when navigating in open waters. When the bubble breaker 300 is in the closed state, the first bubbles 250 are discharged directly to the bottom of the vessel. The large size of the first bubbles 250 effectively reduces the vessel's ice resistance, improving the vessel's operational efficiency when navigating in icy waters. Therefore, the bubble drag reduction device can selectively open or close the bubble breaker 300 as needed, allowing either the large first bubbles 250 or the small second bubbles 320 to perform their drag reduction function. This increases the versatility of the bubble drag reduction device and improves the overall drag reduction effect of the bubble drag reduction device, thereby improving the overall operational efficiency of the vessel. At the same time, the size of the bubbles can be adjusted simply by turning the bubble breaker 300 on or off, which has a simple structure and operation and low manufacturing cost.

[0038] Furthermore, the bubble generator 200 is embedded in the ship to prevent the bubble generator 200 from being exposed and increasing the resistance of the ship.

[0039] In this embodiment, Figure 4As shown, the bubble generator 200 includes a top plate 210, a side plate 220, and a nozzle plate 230. The top plate 210 is connected to the gas generator 100. The nozzle plate 230 is located below the top plate 210. Nozzle holes 231 are evenly distributed on the nozzle plate 230. The side plate 220 connects the top plate 210 and the nozzle plate 230. The top plate 210, the side plate 220, and the nozzle plate 230 enclose a compression chamber. Compressed gas enters the compression chamber and is discharged from the nozzle hole 231 to form a first bubble 250. The bubble generator 200 has a simple structure, a simple mechanism for generating the first bubble 250, and a low manufacturing cost, thereby reducing the manufacturing cost of the bubble drag reduction device. Optionally, the aperture of the nozzle hole 231 is 0.01m-0.1m. For example, the aperture can be 0.01m, 0.03m, 0.05m, 0.07m, 0.09m, or 0.1m, etc.

[0040] Furthermore, the bubble generator 200 also includes a partition 240, which is located within the compression chamber and divides the compression chamber into multiple chambers. The multiple chambers are evenly arranged along the length of the vessel, and each chamber is connected to the gas generator 100. This arrangement allows the nozzle plate 230 to correspond to multiple chambers, and each chamber has independent air intake, which can control the airflow and adjust the pressure distribution on the nozzle plate 230 to avoid uneven pressure distribution on the nozzle plate 230.

[0041] The number of chambers is determined by the length of the bubble generator 200 along the length of the vessel (L in the figure). It should be noted that the length of each chamber along the length of the vessel does not exceed 0.5 m. For example, the length of each chamber along the length of the vessel may be 0.1 m, 0.2 m, 0.3 m, or 0.4 m, etc.

[0042] In this embodiment, the number of chambers is three. Of course, it can also be two, four, five or six, etc., and the present invention does not limit this.

[0043] The bubble breaker 300 includes a baffle 310 connected to the outer periphery of the nozzle plate 230. When the bubble breaker 300 is in the open state, the nozzle plate 230 and the baffle 310 form a crushing chamber. The first bubbles 250 can be sheared and crushed by the water flowing into the crushing chamber to form second bubbles 320. The second bubbles 320 are then discharged and flow into the bottom of the vessel. When the bubble breaker 300 is in the closed state, the baffle 310 can be turned outward to be flush with the bottom of the vessel, and the first bubbles 250 are directly discharged and flow into the bottom of the vessel. The bubble breaker 300 is opened and closed by folding the baffle 310 to adjust its position. The structure is simple to operate, and the turbulent flow of the water is used to shear the large first bubbles 250, forming evenly distributed small second bubbles 320. The conversion mechanism is simple and low-cost.

[0044] In order to achieve a crushing effect and prevent the second bubbles 320 from colliding and disappearing, the height H of the crushing chamber cannot be too large. Preferably, the height H of the crushing chamber is less than 0.5 m. For example, H can be 0.1 m, 0.2 m, 0.3 m, or 0.4 m.

[0045] In order to cover the bottom of the ship with the first bubbles 250 or the second bubbles 320, the compression chamber and the crushing chamber are both located near the bow of the ship. As the ship moves forward, the first bubbles 250 or the second bubbles 320 flow out and move backward relative to the ship to cover the entire bottom of the ship.

[0046] It should be noted that the direction of the arrow in the figure is the direction of water flow.

[0047] Continue as Figure 1 As shown, the gas generator 100 includes an air compressor 110 and an air pipe 120 , and the air compressor 110 is communicated with the bubble generator 200 through the air pipe 120 .

[0048] This embodiment also provides a ship with high overall operating efficiency and low cost.

[0049] Specific as Figure 1 As shown, the vessel includes a hull and the aforementioned bubble drag reduction device, located at the bottom of the hull. The device can generate bubbles of both larger and smaller sizes, enabling the vessel to navigate both open waters and icy waters, resulting in high overall operational efficiency and low costs.

[0050] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Bubble drag reduction device, characterized in that: include: a gas generator (100), the gas generator (100) being capable of generating compressed gas; a bubble generator (200), the bubble generator (200) being installed on the bottom of the ship and being in communication with the gas generator (100), the compressed gas being discharged by generating first bubbles (250) through the bubble generator (200); A bubble breaker (300) is provided, the bubble breaker (300) being located downstream of the bubble generator (200) and being in communication with the bubble generator (200). The bubble breaker (300) has an open state and a closed state. When the bubble breaker (300) is in the open state, the first bubble (250) is broken by the bubble breaker (300) into a second bubble (320), and the second bubble (320) flows into the bottom of the ship. When the bubble breaker (300) is in the closed state, the first bubble (250) is directly discharged and flows into the bottom of the ship.

2. The bubble drag reduction device according to claim 1, characterized in that: The bubble generator (200) is embedded in the ship.

3. The bubble drag reduction device according to claim 2, characterized in that: The bubble generator (200) comprises a top plate (210), a side plate (220) and a nozzle plate (230); the top plate (210) is connected to the gas generator (100); the nozzle plate (230) is located below the top plate (210); nozzle holes (231) are evenly arranged on the nozzle plate (230); the side plate (220) connects the top plate (210) and the nozzle plate (230); the top plate (210), the side plate (220) and the nozzle plate (230) are surrounded to form a compression chamber; the compressed gas enters the compression chamber and is discharged from the nozzle hole (231) to form the first bubble (250).

4. The bubble drag reduction device according to claim 3, characterized in that: The diameter of the nozzle hole (231) is 0.01m-0.1m.

5. The bubble drag reduction device according to claim 3, characterized in that: The bubble generator (200) further comprises a partition (240), wherein the partition (240) is located in the compression chamber and divides the compression chamber into a plurality of chambers, wherein the plurality of chambers are evenly arranged along the length direction of the ship, and each of the chambers is connected to the gas generator (100).

6. The bubble drag reduction device according to claim 3, characterized in that: The bubble breaker (300) comprises a baffle (310), wherein the baffle (310) is connected to the outer periphery of the nozzle plate (230); when the bubble breaker (300) is in the open state, the nozzle plate (230) and the baffle (310) enclose a crushing chamber, wherein the first bubble (250) can be interrupted and crushed by the water flow entering the crushing chamber to form the second bubble (320), and the second bubble (320) is discharged and flows into the bottom of the ship; when the bubble breaker (300) is in the closed state, the baffle (310) can be turned outwards to be flush with the bottom of the ship, and the first bubble (250) is directly discharged and flows into the bottom of the ship.

7. The bubble drag reduction device according to claim 6, characterized in that: The compression chamber and the crushing chamber are both located near the bow of the ship.

8. The bubble drag reduction device according to claim 6, characterized in that: The height H of the crushing chamber is less than 0.5m.

9. The bubble drag reduction device according to claim 1, characterized in that: The gas generator (100) comprises an air compressor (110) and an air pipe (120), and the air compressor (110) is connected to the bubble generator (200) through the air pipe (120).

10. A vessel, characterized in that It comprises a ship body and the bubble drag reduction device according to any one of claims 1 to 9, wherein the bubble drag reduction device is located at the bottom of the ship body.

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