Underwater bubble drag reduction device for ship body

Abstract

The utility model discloses a hull underwater bubble drag reduction device which comprises a hull, an air compressor is fixedly installed in the hull, the lower end of the air compressor is fixedly connected with a main air pipe, the lower end of the main air pipe is fixedly connected with an air box, the air box is fixedly connected with the inner side wall of the hull, and the lower surface of the air box is fixedly connected with a plurality of branch air pipes. The lower ends of the branch air pipes penetrate through the ship body to be fixedly connected with threaded pipes, the side surfaces of the branch air pipes are fixedly provided with electromagnetic valves, the lower ends of the threaded pipes are fixedly connected with bubble nozzles, the side surfaces of the bubble nozzles are fixedly connected with transverse rods, and the upper surfaces of the transverse rods are fixedly connected with push rods of which the upper ends penetrate through the ship body to be fixedly connected with transmission assemblies. The push rod is slidably connected with the ship body, and a driving mechanism is arranged on one side of the transmission assembly. Bubbles generated in the using process are prevented from moving downwards perpendicular to the ship body, only a small number of bubbles are around the ship body, and therefore the number of bubbles around the underwater ship body is increased, and meanwhile the resistance reduction effect on the ship body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ship drag reduction, in particular to an underwater bubble drag reduction device for a ship hull. Background Technique

[0002] When a ship is sailing, water will generate a certain resistance to the underwater part of the ship. This resistance is generally caused by the density of water and the viscosity of water to the underwater part of the ship hull. To improve the sailing speed of the ship, save energy consumption, and reduce resistance, generally, a compressor is used to inject air into the bottom of the ship to form bubbles at the bottom of the ship, so that part of the frictional resistance of water is converted into air resistance, thereby reducing the resistance when the ship is sailing.

[0003] At present, the bubble generating parts in the existing underwater bubble drag reduction devices for ship hulls are generally fixedly installed at the bottom of the ship hull, and the flexibility during use is relatively poor. When in use, bubbles are blown vertically downward along the ship hull, and most of the bubbles blown downward will move away from the ship hull, and only a small part is around the ship hull. Therefore, the effect of the bubbles on reducing the drag of the ship hull is reduced. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an underwater bubble drag reduction device for a ship hull, which solves the problem that the traditional bubble drag reduction device has relatively poor flexibility during use, avoids the bubbles generated during use from running vertically downward along the ship hull, and only a small amount of bubbles are around the ship hull. Therefore, the amount of bubbles around the underwater ship hull is increased, and at the same time, the effect of reducing the drag of the ship hull is improved.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: an underwater bubble drag reduction device for a ship hull, including a ship hull, an air compressor is fixedly installed inside the ship hull, and the lower end of the air compressor is fixedly connected with a main air pipe. The lower end of the main air pipe is fixedly connected with an air box, and the air box is fixedly connected with the inner side wall of the ship hull. The lower surface of the air box is fixedly connected with a plurality of branch air pipes, and the lower ends of the branch air pipes pass through the ship hull and are fixedly connected with threaded pipes. An electromagnetic valve is fixedly installed on the side surface of the branch air pipe. The lower end of the threaded pipe is fixedly connected with a bubble spray head, and a cross bar is fixedly connected to the side surface of the bubble spray head. The upper surface of the cross bar is fixedly connected with a push rod, the upper end of the push rod passes through the ship hull and is fixedly connected with a transmission component, and the push rod is slidably connected with the ship hull. A driving mechanism is arranged on one side of the transmission component.

[0006] Preferably, the transmission component includes a semi-gear, and the lower end of one side surface of the semi-gear is rotatably connected with a support plate. The lower end of the support plate is fixedly connected with the inner wall of the ship hull. The upper end of one side surface of the semi-gear is fixedly connected with a push plate, and one side surface of the push plate is fixedly connected with one end of the push rod.

[0007] Preferably, the push rod has a quarter - circle structure, and the center of the push rod is the same as that of the semi - gear.

[0008] Preferably, a sealing ring is provided on the side surface of the push rod inside the hull, and the sealing ring is fixedly connected to the inner wall of the hull.

[0009] Preferably, the driving mechanism includes a support rod, the lower end of the support rod is fixedly connected to the inner wall of the hull, the upper end of the support rod is fixedly connected with an electric telescopic rod, one end of the electric telescopic rod is fixedly connected with a toothed rod, and the side surface of the toothed rod is meshed with the side surface of the semi - gear.

[0010] Preferably, a pressure sensor is fixedly connected to the side surface of the bubble spray head, and the position of the pressure sensor is symmetrical to that of the cross bar. A central controller is fixedly connected to the upper surface of the air box, and the central controller is connected to the pressure sensor on the side surface of the bubble spray head through a wire.

[0011] The utility model provides a hull underwater bubble drag - reduction device. Compared with the prior art, it has the following beneficial effects:

[0012] 1. Through the cooperation of the threaded pipe at the lower end of the bronchus, the cross bar on the side surface of the bubble spray head with the push rod, semi - gear, push plate and driving mechanism in the transmission assembly, the problem that the flexibility of the traditional bubble drag - reduction device is relatively poor during use is solved, and the situation that the bubbles generated during use move vertically downward along the hull and only a small amount of bubbles are around the hull is avoided. Therefore, the amount of bubbles around the underwater hull is increased, and at the same time, the drag - reduction effect on the hull is improved.

[0013] 2. Through the threaded pipe installed on the side surface of the bubble spray head and the central controller installed on the upper surface of the air box, the amount of bubbles produced by the air compressor can be accurately controlled according to the pressure received by the hull, thereby reducing the energy consumption of the air compressor and avoiding the randomness of generating bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the hull structure in the utility model;

[0015] Figure 2 is a schematic diagram of the internal structure of the hull in the utility model;

[0016] Figure 3 is Figure 2 the side - view structure diagram of

[0017] Figure 4 is Figure 3 the enlarged structure diagram at A in

[0018] Figure 5 is Figure 3 the bottom - view structure diagram of

[0019] In the figure: 1. Hull; 2. Air compressor; 3. Air tank; 4. Bronchial tube; 5. Push rod; 6. Sealing ring; 7. Solenoid valve; 8. Central controller; 9. Main air pipe; 10. Bubble nozzle; 1001. Cross bar; 1002. Threaded pipe; 1003. Pressure sensor; 11. Driving mechanism; 1101. Support rod; 1102. Electric telescopic rod; 1103. Rack; 12. Half gear; 1201. Support plate; 1202. Push plate. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-5 , the present invention provides a technical solution: an underwater bubble drag reduction device for a hull, including a hull 1, an air compressor 2 is fixedly installed inside the hull 1, and the lower end of the air compressor 2 is fixedly connected to a main air pipe 9. The lower end of the main air pipe 9 is fixedly connected to an air tank 3, and the air tank 3 is fixedly connected to the inner side wall of the hull 1. A plurality of bronchial tubes 4 are fixedly connected to the lower surface of the air tank 3, and the lower ends of the bronchial tubes 4 pass through the hull 1 and are fixedly connected to a threaded pipe 1002. A solenoid valve 7 is fixedly installed on the side surface of the bronchial tube 4. The lower end of the threaded pipe 1002 is fixedly connected to a bubble nozzle 10, and a cross bar 1001 is fixedly connected to the side surface of the bubble nozzle 10. A push rod 5 is fixedly connected to the upper surface of the cross bar 1001. The upper end of the push rod 5 passes through the hull 1 and is fixedly connected to a transmission component, and the push rod 5 is slidably connected to the hull 1. A driving mechanism 11 is provided on one side of the transmission component.

[0022] As a technical optimization scheme of the present invention, the transmission component includes a half gear 12, and the lower end of one side surface of the half gear 12 is rotatably connected to a support plate 1201. The lower end of the support plate 1201 is fixedly connected to the inner wall of the hull 1. The upper end of one side surface of the half gear 12 is fixedly connected to a push plate 1202, and one side surface of the push plate 1202 is fixedly connected to one end of the push rod 5. The push rod 5 can be pushed by the half gear 12, the push plate 1202 and the driving mechanism 11, and while the hull 1 limits the push rod 5, the push rod 5 can drive the bubble nozzle 10 to rotate 90 degrees through the cross bar 1001. Therefore, the direction of the bubbles blown out by the bubble nozzle 10 can be parallel to the hull 1, and more bubbles can be close to the hull 1, thereby improving the drag reduction effect on the hull 1.

[0023] As a technical optimization solution of the present utility model, the push rod 5 is a quarter-circle structure, and the centers of the push rod 5 and the semi-gear 12 are the same. When the semi-gear 12 rotates, it can drive the push rod 5 to rotate, thus preventing the push rod 5 from getting stuck inside the hull 1.

[0024] As a technical optimization solution of the present utility model, a sealing ring 6 is provided on the side surface of the push rod 5 inside the hull 1, and the sealing ring 6 is fixedly connected to the inner wall of the hull 1, and can seal the hull 1 to prevent water from seeping into the inside of the hull 1.

[0025] As a technical optimization solution of the present utility model, the driving mechanism 11 includes a support rod 1101, and the lower end of the support rod 1101 is fixedly connected to the inner wall of the hull 1. The upper end of the support rod 1101 is fixedly connected with an electric telescopic rod 1102, and one end of the electric telescopic rod 1102 is fixedly connected with a toothed rod 1103. The side surface of the toothed rod 1103 is meshed with the side surface of the semi-gear 12, which is convenient for pushing the semi-gear 12 to rotate, and at the same time pushing the push rod 5 to move counterclockwise, thereby adjusting the angle of the bubble nozzle 10.

[0026] As a technical optimization solution of the present utility model, a pressure sensor 1003 is fixedly connected to the side surface of the bubble nozzle 10, and the position of the pressure sensor 1003 is symmetrical to that of the cross bar 1001. A central controller 8 is fixedly connected to the upper surface of the air box 3, and the central controller 8 is connected to the pressure sensor 1003 on the side surface of the bubble nozzle 10 through a wire.

[0027] When the present utility model is in use, first start the electric telescopic rod 1102 in the driving mechanism 11. At this time, the electric telescopic rod 1102 will push the toothed rod 1103 to move. Therefore, the toothed rod 1103 will drive the semi-gear 12 to rotate counterclockwise. When the semi-gear 12 rotates, it will drive the push rod 5 on one side surface of the push plate 1202 to rotate. When the push rod 5 rotates, it will push the bubble nozzle 10 below the hull 1 to rotate through the cross bar 1001. Since the push rod 5 is a quarter-circle structure, when one end of the push rod 5 moves to the inner wall of the hull 1, the orientation of the bubble nozzle 10 will be parallel to the bottom of the hull 1 at this time. Therefore, the bubbles ejected will be more at the bottom of the hull 1, so as to better reduce the resistance of the hull 1. According to the pressure sensor 1003 on the side surface of the bubble nozzle 10, the pressure below the hull 1 can be detected in real time and transmitted to the central controller 8. At this time, the central controller 8 will adjust the working efficiency of the air compressor 2 according to the pressure received by the hull, so that the bubble nozzle 10 can accurately blow out a certain amount of bubbles.

[0028] At the same time, the content not detailedly described in this specification belongs to the prior art well-known to those skilled in the art.

[0029] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0030] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An underwater bubble drag reduction device for a ship hull, comprising a ship hull (1), characterized in that: An air compressor (2) is fixedly installed inside the hull (1), and a main air pipe (9) is fixedly connected to the lower end of the air compressor (2). The lower end of the main air pipe (9) is fixedly connected to an air box (3), and the air box (3) is fixedly connected to the inner side wall of the hull (1). A plurality of branch air pipes (4) are fixedly connected to the lower surface of the air box (3), and the lower ends of the branch air pipes (4) pass through the hull (1) and are fixedly connected to threaded pipes (1002). An electromagnetic valve (7) is fixedly installed on the side surface of the branch air pipe (4). The lower end of the threaded pipe (1002) is fixedly connected to a bubble spray head (10), and a cross bar (1001) is fixedly connected to the side surface of the bubble spray head (10). A push rod (5) is fixedly connected to the upper surface of the cross bar (1001). The upper end of the push rod (5) passes through the hull (1) and is fixedly connected to a transmission assembly, and the push rod (5) is slidably connected to the hull (1). A driving mechanism (11) is provided on one side of the transmission assembly.

2. The underwater bubble drag reduction device for a hull according to claim 1, wherein: The transmission assembly includes a semi-gear (12), and a support plate (1201) is rotatably connected to the lower end of one side surface of the semi-gear (12). The lower end of the support plate (1201) is fixedly connected to the inner wall of the hull (1). A push plate (1202) is fixedly connected to the upper end of one side surface of the semi-gear (12), and one side surface of the push plate (1202) is fixedly connected to one end of the push rod (5).

3. The underwater bubble drag reduction device for a hull according to claim 2, characterized in that: The push rod (5) has a quarter-circle structure, and the push rod (5) has the same center as the semi-gear (12).

4. The underwater bubble drag reduction device for a hull according to claim 1, characterized in that: A sealing ring (6) is provided on the side surface of the push rod (5), and the sealing ring (6) is fixedly connected to the inner wall of the hull (1).

5. The hull underwater bubble drag reduction device according to claim 2, characterized in that: The driving mechanism (11) includes a support rod (1101), and the lower end of the support rod (1101) is fixedly connected to the inner wall of the hull (1). An electric telescopic rod (1102) is fixedly connected to the upper end of the support rod (1101), and a toothed rod (1103) is fixedly connected to one end of the electric telescopic rod (1102). One side surface of the toothed rod (1103) is meshed with the side surface of the semi-gear (12).

6. The underwater bubble drag reduction device for a hull according to claim 1, characterized in that: A pressure sensor (1003) is fixedly connected to the side surface of the bubble spray head (10), and the position of the pressure sensor (1003) is symmetrical to the position of the cross bar (1001). A central controller (8) is fixedly connected to the upper surface of the air box (3), and the central controller (8) is connected to the pressure sensor (1003) through a wire.

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