Self-starting and stopping anti-pollution bubble generating device and method and ship containing same

Abstract

The application discloses a self-starting and stopping anti-pollution bubble generating device and method and a ship comprising the device, and belongs to the technical field of ship bubble drag reduction and ship anti-pollution. The device comprises a ventilation structure, an anti-pollution assembly and a power generation assembly. The ventilation structure is fixed on a ship outer plate through a ventilation structure bottom plate and is co-molded with a ship outer surface. A detachable cover plate is arranged on the ventilation structure bottom plate. The ventilation structure is internally provided with a ventilation chamber. A gas outlet end of an air inlet pipe is in communication with the ventilation chamber. The detachable cover plate and the wall surface of the ventilation chamber are provided with a gap for gas circulation. The power generation assembly is arranged in the ventilation chamber and is close to the air inlet pipe outlet, and can convert the excess kinetic energy of the gas into electric energy when the high-speed gas passes through. The power generation assembly stores the electric energy in a battery in the anti-pollution assembly, and the battery supplies power to anti-pollution elements. The anti-pollution elements are devices for avoiding marine organism adhesion by adopting electrolytic chlorine preparation anti-pollution or ultrasonic anti-pollution means. The anti-pollution elements can realize self-starting and stopping according to the working state of an air lubrication system.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ship bubble drag reduction and ship antifouling, and particularly relates to a self-starting and stopping antifouling bubble generating device, a method and a ship comprising the device. BACKGROUND

[0002] The main technical idea of the gas lubrication drag reduction system of the ship is to introduce air into the bottom of the ship, form continuous or discrete bubbles between the ship body and water, reduce the density and viscosity of the fluid around the ship body, and thus greatly reduce the frictional resistance when the ship is sailing. The technical implementation approach is generally to pass the gas along the pipeline to the bubble generating device on the ship bottom plate through a specific air source device, and form a bubble flow at the ship bottom.

[0003] After the gas lubrication drag reduction system is put into use, when the system is not working, the liquid flow rate at the opening position is relatively low, and is easy to be attached by marine organisms. At the same time, when the ship is docked, the flow rate around the ship body is zero, and is extremely easy to be attached by marine organisms. Therefore, the biological antifouling of the air passage device also becomes one of the important goals of its design. For example, the utility model patent CN216002977U describes a stable pressure cavity structure, which comprises a fixed part and a detachable part. The fixed part is fixed to the ship bottom plate to form a stable pressure cavity, and the stable pressure cavity has a corrosion-resistant coating. The detachable part can open the opening of the stable pressure cavity, and thus facilitate the repair and later maintenance of the corrosion-resistant coating. However, the position of the bubble generating device in the patent is not conducive to maintenance, and the effective time of the chemical coating is short, which requires repeated spraying maintenance.

[0004] The antifouling of the seawater pipeline of the conventional ship is achieved by built-in large electrolytic cells, which pass liquid containing high-concentration effective chlorine into the pipeline and diffuse in the pipeline, thereby achieving the antifouling effect. However, for the bubble generating device of the gas lubrication system, the pipeline is used for air supply, and cannot be directly connected to the ship electrolytic cell. If a special antifouling seawater pipeline is connected externally, it will increase the complexity of the ship pipeline and increase the risk of failure. At the same time, since the bubble generating device is located in the ballast tank, the pipeline maintenance is also extremely complex. Therefore, it is urgent to provide an antifouling bubble generating device with self-cleaning capability. SUMMARY

[0005] The present application aims to solve the problems in the prior art and provide a self-starting and stopping antifouling bubble generating device, a method and a ship comprising the device.

[0006] The specific technical solutions adopted by the present application are as follows:

[0007] In a first aspect, the present application provides a self-starting and stopping antifouling bubble generating device, comprising an air passage structure, an antifouling assembly and a power generation assembly.

[0008] The main body of the ventilation structure is composed of a ventilation structure bottom plate, a ventilation chamber and an air inlet pipe; the ventilation structure is used to introduce gas to the ship bottom and form a continuous gas layer or discrete bubbles, thereby reducing the frictional resistance of the whole ship;

[0009] The anti-fouling assembly comprises a battery and an anti-fouling element; the anti-fouling assembly hinders marine organisms from attaching by means of ultrasonic waves or electrolytic chlorine production.

[0010] The power generation assembly comprises a power generator and a moving part; the power generation assembly is used to convert the kinetic energy of the gas in the ventilation structure into electric energy and store it in the battery, thereby providing electric energy for the anti-fouling assembly.

[0011] Preferably, the ventilation structure is fixed to the ship outer plate by the ventilation structure bottom plate and is co-molded with the outer surface of the ship; a detachable cover plate is arranged on the ventilation structure bottom plate; the inside of the ventilation structure is a ventilation chamber; the air outlet end of the air inlet pipe is in communication with the ventilation chamber, and the air inlet end of the air inlet pipe is used to communicate with a gas source device; the detachable cover plate and the wall surface of the ventilation chamber have a gap for gas flow; the battery chamber is located around the ventilation chamber or in the ventilation chamber;

[0012] The power generation assembly further comprises a fixing device; the power generator is arranged in the ventilation chamber by the fixing device and is close to the air outlet of the air inlet pipe; the moving part is arranged on the power generator and converts the kinetic energy of the gas in the ventilation structure into electric energy;

[0013] The anti-fouling assembly further comprises a battery chamber outer plate; the battery and the anti-fouling element are fixed by the battery chamber outer plate and are arranged in the battery chamber; the battery and the anti-fouling element are respectively connected with the power generator in the power generation assembly by waterproof wires; the battery supplies electric energy for the anti-fouling element.

[0014] Further, the anti-fouling element adopts an insoluble electrode; after the battery supplies electric energy for the anti-fouling element, the electrode electrolyzes seawater to generate effective chlorine, thereby avoiding marine organisms from attaching.

[0015] Further, the anti-fouling element adopts an ultrasonic device; after the battery supplies electric energy for the anti-fouling element, the ultrasonic device emits high-frequency ultrasonic vibration to hinder marine organisms from attaching.

[0016] Further, the anti-fouling assembly and the power generation assembly are both modularized and detachable components; the main body materials of the anti-fouling assembly and the power generation assembly that need to contact seawater adopt stainless steel, titanium alloy or high-molecular polymer materials with corrosion resistance, or materials coated with a corrosion-resistant coating.

[0017] Further, the moving part adopts a fan blade or a spiral fan blade, which can effectively utilize the kinetic energy of the gas.

[0018] Further, the ventilation structure bottom plate is fixed to the ship outer plate by welding.

[0019] Further, the detachable cover plate is fixed at the bottom of the ventilation chamber by bolt connection.

[0020] In a second aspect, the application provides a method for applying the self-starting and stopping anti-fouling bubble generating device, which is specifically as follows: the self-starting and stopping anti-fouling bubble generating device of the first aspect is applied to a ship air lubrication system; the air inlet end of the air inlet pipe is communicated with the air source device through the ventilation pipeline;

[0021] When the air lubrication system is turned on, the air source device generates high-speed gas by compressing air; the high-speed gas enters the ventilation chamber through the ventilation pipeline and the air inlet pipe, drives the moving parts in the ventilation chamber to rotate, so that the generator generates electricity; the generator stores the electric energy in the battery; at this time, the battery is charged, and the anti-fouling element does not work;

[0022] When the air lubrication system is turned off, the ventilation structure is immersed in seawater, the battery supplies power to the anti-fouling element, and the anti-fouling element produces chlorine by electrolysis or ultrasonic vibration to avoid marine organisms from adhering.

[0023] In a third aspect, the application provides a ship containing a self-starting and stopping anti-fouling bubble generating device, which comprises an air source device, a ventilation pipeline and the self-starting and stopping anti-fouling bubble generating device of the first aspect; the air source device is communicated with the air inlet end of the air inlet pipe through the ventilation pipeline.

[0024] Compared with the prior art, the application has the following beneficial effects:

[0025] (1) The self-starting and stopping anti-fouling bubble generating device provided by the application comprises a modular ventilation structure, an anti-fouling assembly and a power generation assembly. By installing the power generation assembly in the ventilation structure, part of the kinetic energy of the gas is converted into electric energy by the impact of high-speed airflow during ventilation, and the built-in battery is charged without external power supply. The components in the device are detachably installed in the bubble generating device chamber, which is convenient to install and also facilitates later cleaning and maintenance.

[0026] (2) The anti-fouling assembly in the application can use electrolytic chlorine anti-fouling or ultrasonic anti-fouling. The effective chlorine concentration in the low flow area of the bubble generating device can be improved by electrochemical method, so as to achieve the effects of sterilization and prevention of marine organisms from adhering; or a low-power ultrasonic wave generating device is used to make the wall surface of the bubble generator vibrate at high frequency, thereby reducing the biological adhesion ability and achieving the effect of biological anti-fouling. The two anti-fouling methods do not consume additional substances, and the effective time is longer than that of the conventional paint anti-fouling.

[0027] (3) The present application utilizes the characteristics of the air lubrication system to realize the self-starting and stopping function of the anti-fouling assembly, saves the power consumption of the system, and does not need external control circuit. When the ship is in the process of sailing, the air lubrication system is normally running, the seawater in the bubble generating device is discharged, there is no liquid level signal, and the anti-fouling element stops working; when the ship is at anchor, the air lubrication system stops running, the bubble generating device is submerged by seawater, there is a liquid level signal, and the anti-fouling element works normally. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A self-starting and stopping anti-fouling bubble generating device provided for the present embodiment is shown in the cross-sectional view.

[0029] Figure 2 A self-starting and stopping anti-fouling bubble generating device provided for the present embodiment is shown in the axial side view.

[0030] Figure 3 An internal schematic view of the air vent structure provided for the present embodiment is shown.

[0031] Figure 4 An installation schematic of the self-starting and stopping anti-fouling bubble generating device provided for the present embodiment is shown.

[0032] Figure 5 A schematic of the power generation assembly provided for the present embodiment is shown.

[0033] Figure 6 A cross-sectional view of the power generation assembly provided for the present embodiment is shown.

[0034] Figure 7 A schematic of the anti-fouling assembly provided for the present embodiment is shown.

[0035] Figure 8 A connection schematic of the air vent structure and the air source device provided for the present embodiment is shown.

[0036] In the figure: ship outer plate 1, air source device 2, air vent pipeline 3, air vent structure 4, detachable cover plate 41, air vent chamber 42, air vent structure bottom plate 43, battery chamber 44, air inlet pipe 45, anti-fouling assembly 9, battery 91, anti-fouling element 92, battery chamber outer plate 93, power generation assembly 10, power generator 101, moving part 102, fixing device 103. DETAILED DESCRIPTION

[0037] The present application will be further described and explained with reference to the accompanying drawings and specific embodiments. The technical features of each embodiment in the present application can be combined accordingly without conflict.

[0038] As shown in Figure 1 and Figure 2 , the present application provides a self-starting and stopping anti-fouling bubble generating device, which comprises an air vent structure 4, an anti-fouling assembly 9 and a power generation assembly 10.

[0039] The device provided by the application comprises a ventilation structure bottom plate 43, an air inlet pipe 45 and a detachable cover plate 41. The ventilation structure bottom plate 43 is fixed on the outer plate 1 by welding and is co-molded with the outer surface of the ship, so as to fix and connect the ventilation structure 4 with the ship body.

[0040] As shown in Figure 3 , the ventilation structure 4 is internally divided into a ventilation chamber 42 and a battery chamber 44. In the ventilation chamber 42, the power generation assembly 10 is arranged near the air inlet pipe 45. The anti-fouling assembly 9 is arranged in the battery chamber 44, as shown in Figure 4 . The air outlet end of the air inlet pipe 45 is communicated with the ventilation chamber 42, and the air inlet end of the air inlet pipe 45 is communicated with the gas source device 2 in the ship through the ventilation pipeline 3. The detachable cover plate 41 is arranged on the ventilation structure bottom plate 43, and in the embodiment, the detachable cover plate 41 is connected with the ventilation structure bottom plate 43 by bolt connection. The detachable cover plate 41 is arranged at the bottom of the ventilation chamber 42, and the detachable cover plate 41 and the wall surface of the ventilation chamber 42 have a gap for gas flow, which does not constitute a seal. Preferably, the side wall of the ventilation chamber 42 has a limiting step for positioning the detachable cover plate 41 when installed.

[0041] As shown in Figure 5 and Figure 6 , the power generation assembly 10 comprises a power generator 101, a moving part 102 and a fixing device 103. The power generator 101 is fixed in the ventilation chamber 42 through the fixing device 103. The moving part 102 is arranged on the power generator 101. When high-speed air enters the ventilation chamber 42, the moving part 102 can rotate and drive the power generator 101 to rotate, thereby generating induced current, converting the mechanical energy of the gas into electric energy, and storing the electric energy in the battery 91 through the rectification and voltage regulation module. In the specific embodiment, the moving part 102 can adopt a fan blade.

[0042] As shown in Figure 7As shown, the device provided by the application comprises a battery 91, an antifouling element 92 and a battery cavity outer plate 93, the battery 91 and the antifouling element 92 are fixed through the battery cavity outer plate 93 and installed in the battery cavity 44. The battery 91 and the antifouling element 92 are connected with the generator 101 in the power generation assembly 10 through waterproof wires respectively. Among them, the battery 91 supplies power for the antifouling element 92. The battery 91 can be installed with a liquid level switch, and the battery use condition is judged according to the liquid level signal. Considering that marine organisms such as barnacles, diatoms, oysters and mussels and algae or other microorganisms will adhere to the outer surface of the ship body, the antifouling element 92 is selected as a device for avoiding the adhesion of marine organisms, so as to achieve the effect of ship antifouling. The antifouling element 92 can use insoluble electrodes to electrolyze seawater to generate effective chlorine, or use ultrasonic devices to emit high-frequency ultrasonic vibration to avoid marine organisms from adhering.

[0043] Since the device provided by the application needs to be applied to marine ships, the salt content in the marine environment is high, which is easy to cause corrosion of metal materials. In order to avoid corrosion caused by long-term immersion in seawater, the antifouling assembly 9 and the power generation assembly 10 in the application must have good corrosion resistance, and corrosion-resistant materials such as stainless steel, titanium alloy, high polymer and materials coated with special corrosion-resistant coating can be used.

[0044] In addition, the antifouling assembly 9 and the power generation assembly 10 in the application are detachable parts. When not in use, the detachable cover plate 41 on the bottom plate 43 can be disassembled to take out the antifouling assembly 9 and the power generation assembly 10, which is convenient for later maintenance and cleaning.

[0045] The application also provides a ship comprising a self-starting and stopping antifouling bubble generating device, which comprises a gas source device 2, an air supply pipeline 3 and the above-mentioned self-starting and stopping antifouling bubble generating device. The gas source device 2 is communicated with the air inlet end of the air inlet pipe 45 through the air supply pipeline 3 to provide high-speed air for the air supply cavity 42, and the specific structure is shown in the figure. Figure 8

[0046] Embodiment 1

[0047] The embodiment provides an application method of a self-starting and stopping antifouling bubble generating device, wherein the antifouling assembly uses insoluble electrodes, and the specific structure is as follows:

[0048] The above-mentioned self-starting and stopping antifouling bubble generating device is applied to a ship air lubrication system. The air inlet end of the air inlet pipe 45 is communicated with the gas source device 2 through the air supply pipeline 3.

[0049] ​When the air lubrication system is turned on, the air source device 2 compresses air to generate high-speed gas. The high-speed gas enters the air chamber 42 through the air pipe 3 and the air inlet pipe 45, drives the moving part 102 of the power generation assembly 10 to rotate, i.e. the fan blades rotate, so that the generator 101 generates electricity. After being connected to the rectification and voltage regulation module, the generator 101 stores the electric energy into the battery 91. In addition, under the action of the moving part 102, the high-speed gas is reduced in speed and becomes more stable, and then passes out from the gap between the air chamber 42 and the detachable cover plate 41, forming a dense mesoscale bubble layer covering the ship bottom, thereby reducing the ship sailing resistance.

[0050] When the air lubrication system is turned off, seawater enters the air structure 4 and directly contacts the insoluble electrode. The battery 91 supplies power to the insoluble electrode, and the electrode electrolyzes seawater to generate effective chlorine, thereby preventing marine organisms near the air structure 4 from adhering, and preventing biological pollution. When the air lubrication system is turned on again, the high-speed gas enters the bubble generating unit again, and the seawater in the bubble generating unit is discharged, so that the electrode does not contact the seawater, and the reaction is automatically stopped.

[0051] Embodiment 2

[0052] The embodiment provides an application method of the self-starting and stopping anti-pollution bubble generating device, wherein the anti-pollution assembly adopts an ultrasonic device, and the application method is as follows:

[0053] The self-starting and stopping anti-pollution bubble generating device is applied to the air lubrication system of a ship. The air inlet end of the air inlet pipe 45 is communicated with the air source device 2 through the air pipe 3.

[0054] When the air lubrication system is turned on, the air source device 2 compresses air to generate high-speed gas. The high-speed gas enters the air chamber 42 through the air pipe 3 and the air inlet pipe 45, drives the moving part 102 of the power generation assembly 10 to rotate, i.e. the fan blades rotate, so that the generator 101 generates electricity. After being connected to the rectification and voltage regulation module, the generator 101 stores the electric energy into the battery 91. In addition, under the action of the moving part 102, the high-speed gas is reduced in speed and becomes more stable, and then passes out from the gap between the air chamber 42 and the detachable cover plate 41, forming a dense mesoscale bubble layer covering the ship bottom, thereby reducing the ship sailing resistance.

[0055] When the air lubrication system is turned off, the bubble generating unit is submerged in seawater, the liquid level switch detects a liquid level signal, and the battery 91 supplies power to the ultrasonic device. The ultrasonic device emits high-frequency ultrasonic waves, and the air structure wall surface acts as a sound board to bear the sound waves. Under the action of the high-frequency sound waves, marine organisms such as algae and microorganisms are difficult to adhere to the wall surface, thereby preventing the growth of the marine organisms, and preventing biological pollution. When the air lubrication system is turned on, the seawater in the bubble generating unit is discharged, the liquid level switch does not detect a signal, the battery does not supply power, and the ultrasonic device does not work.

[0056] The above embodiments are only the preferred embodiments of the present application, but not intended to limit the present application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the scope of the present application.

Claims

1. A self-starting and stopping anti-fouling bubble generating device, characterized by, The air lubrication system comprises a ventilation structure (4), an antifouling assembly (9) and a power generation assembly (10); the main body of the ventilation structure (4) is composed of a ventilation structure bottom plate (43), a ventilation chamber (42) and an air inlet pipe (45); the ventilation structure (4) is used for guiding gas to the ship bottom and forming a continuous air layer or discrete air bubbles, so as to reduce the frictional resistance of the whole ship; the antifouling assembly (9) comprises a battery (91) and an antifouling element (92); the antifouling assembly (9) hinders the attachment of marine organisms by means of ultrasonic waves or electrolytic chlorine production; the power generation assembly (10) comprises a power generator (101) and a moving part (102); the power generation assembly (10) is used for converting the kinetic energy of the gas in the ventilation structure (4) into electric energy and storing the electric energy in the battery (91), so as to provide electric energy for the antifouling assembly (9); the power generation assembly (10) further comprises a liquid level switch, which controls the battery activation according to the liquid level signal. The ventilation structure (4) is internally provided with the ventilation chamber (42); the air outlet end of the air inlet pipe (45) is communicated with the ventilation chamber (42), and the air inlet end of the air inlet pipe (45) is used for being communicated with the gas source device (2); the antifouling assembly (9) is arranged in a battery chamber (44); the battery chamber (44) is located around the ventilation chamber (42) or in the ventilation chamber (42); the power generation assembly (10) is arranged in the ventilation chamber (42) and is close to the outlet of the air inlet pipe (45). When the air lubrication system is turned on, the gas from the gas source device (2) enters the ventilation chamber (42) to make the power generation assembly (10) generate electricity and store the electric energy in the battery (91); when the air lubrication system is turned off, the liquid level switch controls the battery (91) to start according to the liquid level signal, so as to supply power to the antifouling element (92).

2. The self-starting, anti-fouling bubble generator of claim 1, wherein, The ventilation structure (4) is fixed to the ship outer plate (1) by the ventilation structure bottom plate (43) and is co-molded with the outer surface of the ship; the ventilation structure bottom plate (43) is provided with a detachable cover plate (41); the detachable cover plate (41) and the wall surface of the ventilation chamber (42) have a gap for gas flow; The power generation assembly (10) further comprises a fixing device (103), the power generator (101) is arranged in the ventilation chamber (42) by the fixing device (103) and is close to the outlet of the air inlet pipe (45); the moving part (102) is arranged on the power generator (101) and converts the kinetic energy of the gas in the ventilation structure (4) into electric energy; The antifouling assembly (9) further comprises a battery chamber outer plate (93), the battery (91) and the antifouling element (92) are fixed by the battery chamber outer plate (93); the battery (91) and the antifouling element (92) are respectively connected with the power generator (101) in the power generation assembly (10) by waterproof wires; the battery (91) supplies power to the antifouling element (92).

3. The self-starting, anti-fouling bubble generator of claim 2, wherein, The antifouling element (92) adopts an insoluble electrode; after the battery (91) supplies power to the antifouling element (92), the electrode electrolyzes seawater to generate effective chlorine, so as to avoid the attachment of marine organisms.

4. The self-starting, anti-fouling bubble generator of claim 2, wherein, The antifouling element (92) adopts an ultrasonic device; after the battery (91) supplies power to the antifouling element (92), the ultrasonic device emits high-frequency ultrasonic waves to hinder the attachment of marine organisms.

5. The self-starting, anti-fouling bubble generator of claim 2, wherein, The anti-fouling assembly (9) and the power generation assembly (10) are modular detachable components; the main material of the anti-fouling assembly (9) and the power generation assembly (10) that needs to be in contact with seawater is made of stainless steel, titanium alloy or high polymer material with corrosion resistance, or coated with a material with corrosion resistance.

6. The self-starting, anti-fouling bubble generator of claim 2, wherein, The moving part (102) is a fan blade or a spiral fan blade, which can effectively utilize the kinetic energy of the gas.

7. The self-starting, anti-fouling bubble generator of claim 2, wherein, The ventilation structure bottom plate (43) is fixed on the ship outer plate (1) by welding.

8. The self-starting, anti-fouling bubble generator of claim 2, wherein, The detachable cover plate (41) is fixed at the bottom of the ventilation chamber (42) by bolt connection.

9. A method of using a self-starting, stop-fouling bubble generator, comprising: Specifically, the self-starting and stopping anti-fouling bubble generating device according to any one of claims 2-8 is applied to a ship air lubrication system; the air inlet end of the air inlet pipe (45) is communicated with the air source device (2) through the ventilation pipeline (3); When the air lubrication system is turned on, the air source device (2) compresses air to generate high-speed gas; the high-speed gas enters the ventilation chamber (42) through the ventilation pipeline (3) and the air inlet pipe (45), drives the moving part (102) in the ventilation chamber (42) to rotate, and makes the generator (101) generate electricity; the generator (101) stores the electric energy into the battery (91); at this time, the battery (91) is charged, and the anti-fouling element (92) does not work; When the air lubrication system is turned off, the ventilation structure (4) is immersed in seawater, the battery (91) supplies power to the anti-fouling element (92), and the anti-fouling element (92) generates chlorine by electrolysis or ultrasonic vibration to avoid marine organisms from adhering.

10. A ship comprising a bubble generating device with a self-starting anti-fouling, characterized in that, The self-starting and stopping anti-fouling bubble generating device according to any one of claims 1-8 is applied to a ship air lubrication system; the air source device (2) is communicated with the air inlet end of the air inlet pipe (45) through the ventilation pipeline (3).

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