Bubble generating device and method capable of automatically starting and stopping and preventing pollution and ship comprising bubble generating device

Abstract

The invention discloses an automatic start-stop antifouling bubble generation device and method and a ship comprising the device, and belongs to the technical field of ship bubble resistance reduction and ship antifouling. The device comprises a ventilation structure, an antifouling assembly and a power generation assembly. The ventilation structure is fixed to the ship outer plate through the ventilation structure bottom plate and is in the same shape with the ship outer surface. And a detachable cover plate is arranged on the ventilation structure bottom plate. A ventilation cavity is formed in the ventilation structure. The air outlet end of the air inlet pipe communicates with the ventilation cavity. And a gap for gas circulation exists between the detachable cover plate and the wall surface of the ventilation chamber. The power generation assembly is arranged in the ventilation cavity and close to an outlet of the gas inlet pipe, and when high-speed gas passes through the power generation assembly, redundant kinetic energy of the gas can be converted into electric energy. The power generation assembly stores electric energy in a battery in the anti-fouling assembly, and the battery supplies power to the anti-fouling element. The anti-fouling element is a device for preventing marine organisms from being attached by adopting an electrolytic chlorine production anti-fouling or ultrasonic anti-fouling means. The antifouling element can be automatically started and stopped according to the working state of the air lubrication system.

Description

Technical Field

[0001] The invention belongs to the technical field of ship bubble drag reduction and ship anti-fouling, and specifically relates to a self-start and stop anti-fouling bubble generating device, method and a ship containing the device. Background Art

[0002] The main technical idea of ​​the ship's gas lubrication drag reduction system is to introduce air to the bottom of the ship, and by forming continuous or discrete bubbles between the hull and the water, reduce the density and viscosity of the fluid around the hull, thereby greatly reducing the friction resistance of the ship during navigation. The technical implementation method is generally to pass the gas along the pipeline to the bubble generating device on the bottom plate of the ship through a specific air source device, so as to form a bubble flow at the bottom of the ship.

[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 will be relatively low, which is easy to be attached by marine organisms. At the same time, when the ship is docked, the flow rate around the hull is zero, which is very easy to be attached by marine organisms. Therefore, biological antifouling of the ventilation device has also become one of the important goals of its design. For example, Chinese utility model patent CN216002977U describes a pressure-stabilizing chamber structure, which includes a fixed part and a detachable part. The fixed part is fixed to the bottom plate of the ship to form a pressure-stabilizing chamber. There is an anti-corrosion coating in the pressure-stabilizing chamber. The detachable part can open the opening of the pressure-stabilizing chamber, which is convenient for the repair and subsequent maintenance of the anti-corrosion coating. However, the position of the bubble generating device in this patent is not conducive to maintenance, and the effective time of the chemical coating is short, requiring repeated spraying and maintenance.

[0004] Conventional ships’ seawater pipelines are protected from fouling by installing large electrolytic cells, passing a liquid containing a high concentration of effective chlorine into the pipeline, and diffusing it in the pipeline to achieve an anti-fouling effect. However, for the bubble generator of the gas lubrication system, its pipeline is used for gas supply and cannot be directly connected to the marine electrolytic cell. If a dedicated anti-fouling seawater pipeline is connected externally, the complexity of the hull pipeline will increase and the risk of failure will increase. At the same time, since the bubble generator is located in the ballast water tank, its pipeline maintenance will also be particularly complicated. Therefore, there is an urgent need to provide an anti-fouling bubble generator with self-cleaning capabilities. Summary of the invention

[0005] The purpose of the present invention is to solve the deficiencies in the prior art and to provide a self-starting and stopping anti-fouling bubble generating device, method and a ship containing the device.

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

[0007] In a first aspect, the present invention provides a self-starting and stopping anti-fouling bubble generating device, comprising a ventilation structure, an anti-fouling component and a power generation component;

[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 guide the gas to the bottom of the ship and form a continuous air layer or discrete bubbles, thereby reducing the friction resistance of the entire ship;

[0009] The antifouling component includes a battery and an antifouling element; the antifouling component prevents marine organisms from attaching by ultrasonic or electrolytic chlorine production;

[0010] The power generation component includes a generator and a moving part; the power generation component is used to convert the kinetic energy of the gas in the ventilation structure into electrical energy and store it in a battery to provide electrical energy for the anti-fouling component.

[0011] Preferably, the ventilation structure is fixed to the outer plate of the ship through the ventilation structure bottom plate and conforms to the outer surface of the ship; a detachable cover plate is provided on the ventilation structure bottom plate; the interior of the ventilation structure is a ventilation chamber; the outlet end of the air inlet pipe is connected to the ventilation chamber, and the air inlet end of the air inlet pipe is used to communicate with the air source device; there is a gap between the detachable cover plate and the wall of the ventilation chamber for gas circulation; the battery chamber is located around the ventilation chamber or in the ventilation chamber;

[0012] The power generation assembly also includes a fixing device, and the generator is arranged in the ventilation chamber through the fixing device, close to the outlet of the air inlet pipe; the moving part is arranged on the generator to convert the kinetic energy of the gas in the ventilation structure into electrical energy;

[0013] The anti-fouling component also includes an outer panel of the battery chamber, and the battery and the anti-fouling element are fixed by the outer panel of the battery chamber and arranged in the battery chamber; the battery and the anti-fouling element are respectively connected to the generator in the power generation component through waterproof wires; the battery supplies power to the anti-fouling element.

[0014] Furthermore, the anti-fouling element adopts an insoluble electrode; after the battery supplies power to the anti-fouling element, the electrode electrolyzes seawater to produce effective chlorine to prevent the attachment of marine organisms.

[0015] Furthermore, the anti-fouling element adopts an ultrasonic device; after the battery supplies power to the anti-fouling element, the ultrasonic device emits high-frequency ultrasonic vibrations to hinder the attachment of marine organisms.

[0016] Furthermore, the anti-fouling components and power generation components are modular detachable parts; the main materials of the anti-fouling components and power generation components that need to come into contact with seawater are made of corrosion-resistant stainless steel, titanium alloy or high molecular polymer materials, or materials coated with corrosion-resistant coatings.

[0017] Furthermore, the moving parts are fan blades or spiral blades, which can effectively utilize the kinetic energy of the gas.

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

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

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

[0021] When the air lubrication system is turned on, the air source device compresses the air to generate high-speed gas; 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, and makes the generator generate 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 and the battery powers the anti-fouling element, which prevents the attachment of marine organisms by electrolytic chlorine production or ultrasonic vibration.

[0023] In a third aspect, the present invention provides a ship comprising a self-start and stop anti-fouling bubble generating device, comprising an air source device, a ventilation pipeline and the self-start and stop anti-fouling bubble generating device as described in the first aspect; the air source device is connected to the air inlet end of the air inlet pipe through the ventilation pipeline.

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

[0025] (1) The self-starting and stopping anti-fouling bubble generating device provided by the present invention includes a modular ventilation structure, an anti-fouling component and a power generation component. By installing the power generation component in the ventilation structure, part of the kinetic energy of the gas is converted into electrical energy by means of the impact of the high-speed airflow during ventilation, and the built-in battery is charged without the need for external power supply. The various components in the device are installed in the chamber of the bubble generating device in a detachable form, which is easy to install and also convenient for later cleaning and maintenance.

[0026] (2) The antifouling component of the present invention can adopt electrolytic chlorine production or ultrasonic antifouling. The effective chlorine concentration in the low flow rate area in the bubble generator can be increased by electrochemical means, thereby achieving the effect of sterilization and preventing the attachment of offshore organisms; or a low-power ultrasonic generator can be used to make the wall of the bubble generator produce high-frequency vibrations, reduce the ability of biological attachment, and thus achieve the effect of biological antifouling. These two antifouling methods do not cause additional material loss and are effective for a longer time compared to conventional spray paint antifouling.

[0027] (3) The present invention utilizes the characteristics of the air lubrication system to realize the self-start and stop function of the anti-fouling component, saving the power loss of the system and requiring no external control circuit. When the ship is in the process of sailing, the air lubrication system operates normally, the seawater in the bubble generating device is discharged, there is no liquid level signal, and the anti-fouling component stops working; when the ship is docked, the air lubrication system stops operating, the bubble generating device is immersed in seawater, there is a liquid level signal, and the anti-fouling component operates normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A cross-sectional view of the self-start-stop anti-fouling bubble generating device provided in this embodiment;

[0029] Figure 2 Axonometric view of the self-start-stop anti-fouling bubble generating device provided in this embodiment;

[0030] Figure 3 A schematic diagram of the interior of the ventilation structure provided in this embodiment;

[0031] Figure 4 A schematic diagram of the installation of the bubble generating device for self-start and stop anti-fouling provided in this embodiment;

[0032] Figure 5 A schematic diagram of a power generation assembly provided for this embodiment;

[0033] Figure 6 A cross-sectional view of a power generation assembly provided for this embodiment;

[0034] Figure 7 A schematic diagram of an anti-fouling component provided in this embodiment;

[0035] Figure 8 A schematic diagram of the connection between the ventilation structure and the air source device provided in this embodiment;

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

[0037] The present invention is further described and illustrated below in conjunction with the accompanying drawings and specific embodiments. The technical features of each embodiment of the present invention can be combined accordingly without conflicting with each other.

[0038] like Figure 1 and Figure 2 As shown, the present invention provides a self-starting and stopping anti-fouling bubble generating device, comprising a ventilation structure 4, an anti-fouling component 9 and a power generation component 10.

[0039] In the device provided by the present invention, the ventilation structure 4 includes 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 to the outer plate 1 by welding and conforms to the outer surface of the ship, so that the ventilation structure 4 is fixedly connected to the hull.

[0040] like Figure 3 As shown, the ventilation structure 4 is divided into a ventilation chamber 42 and a battery chamber 44. In the ventilation chamber 42, near the air inlet pipe 45, a power generation component 10 is arranged. In the battery chamber 44, an anti-fouling component 9 is arranged, as shown in FIG. Figure 4 As shown. The air outlet end of the air inlet pipe 45 is connected to the ventilation chamber 42, and the air inlet end of the air inlet pipe 45 is connected to the air source device 2 in the ship through the ventilation pipeline 3. A removable cover plate 41 is provided on the ventilation structure bottom plate 43. In this embodiment, the removable cover plate 41 is removably connected to the ventilation structure bottom plate 43 by bolt connection. And the removable cover plate 41 is located at the bottom of the ventilation chamber 42, and there is a gap for gas circulation between the removable cover plate 41 and the wall of the ventilation chamber 42, and no seal is formed. Preferably, the side wall of the ventilation chamber 42 is provided with a limiting step for positioning the removable cover plate 41 during installation.

[0041] like Figure 5 and Figure 6 As shown, in the device provided by the present invention, the power generation component 10 includes a generator 101, a moving part 102 and a fixing device 103. The generator 101 is fixed in the ventilation chamber 42 by the fixing device 103. The moving part 102 is provided on the generator 101. When high-speed air enters the ventilation chamber 42, the moving part 102 can rotate and drive the internal rotation of the generator 101, thereby generating an induced current, converting the mechanical energy of the gas into electrical energy, and storing it in the battery 91 through the rectification and voltage regulation module. In a specific embodiment, the moving part 102 can be a fan blade.

[0042] like Figure 7As shown, in the device provided by the present invention, the antifouling component 9 includes a battery 91, an antifouling element 92 and an outer plate 93 of the battery chamber, and the battery 91 and the antifouling element 92 are fixed by the outer plate 93 of the battery chamber and installed in the battery chamber 44. The battery 91 and the antifouling element 92 are respectively connected to the generator 101 in the power generation component 10 through waterproof wires. Among them, the battery 91 supplies power to the antifouling element 92. The battery 91 can be equipped with a liquid level switch, and the battery activation status is judged according to the liquid level signal. Considering that organisms such as barnacles, diatoms, oysters, mussels, and algae or other microorganisms in the ocean will adhere to the outer surface of the ship, the antifouling element 92 is selected as a device to avoid the attachment of marine organisms to achieve the effect of antifouling the ship. The antifouling element 92 can use an insoluble electrode to electrolyze seawater to produce effective chlorine, or use an ultrasonic device to emit high-frequency ultrasonic vibrations to avoid the attachment of marine organisms.

[0043] Since the device provided by the present invention needs to be applied to marine vessels, the marine environment has high salt content, which easily leads to corrosion of metal materials. In order to avoid corrosion caused by long-term immersion in seawater, the anti-fouling component 9 and the power generation component 10 in the present invention must have good corrosion resistance, and can be made of corrosion-resistant materials such as stainless steel, titanium alloy, high molecular polymer, or materials coated with special corrosion-resistant coatings.

[0044] In addition, the anti-fouling assembly 9 and the power generation assembly 10 in the present invention are both detachable components. When not in use, the detachable cover plate 41 on the bottom plate 43 can be disassembled to take out the anti-fouling assembly 9 and the power generation assembly 10, which is convenient for later maintenance and cleaning.

[0045] The present invention also provides a ship including a self-starting and stopping anti-fouling bubble generating device, including an air source device 2, a ventilation pipeline 3 and the above self-starting and stopping anti-fouling bubble generating device. The air source device 2 is connected to the air inlet end of the air inlet pipe 45 through the ventilation pipeline 3 to provide high-speed air to the ventilation chamber 42. Figure 8 shown.

[0046] Example 1

[0047] This embodiment provides an application method of a self-starting and stopping anti-fouling bubble generating device, wherein the anti-fouling component uses an insoluble electrode, as follows:

[0048] The above-mentioned bubble generating device with self-start and stop anti-fouling is applied to the air lubrication system of the ship. The air inlet end of the air inlet pipe 45 is connected to the air source device 2 through the ventilation pipeline 3.

[0049] When the air lubrication system is turned on, the air source device 2 compresses the 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, driving the moving part 102 of the power generation component 10 to rotate, that is, the fan blades rotate, so that the generator 101 generates electricity. After connecting the rectifier and voltage regulation module, the generator 101 stores the electrical energy in 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 passes out from the gap between the ventilation chamber 42 and the removable cover plate 41, forming a dense mesoscale bubble layer covering the bottom of the ship, which has the effect of reducing the navigation resistance of the ship.

[0050] When the air lubrication system is turned off, seawater enters the ventilation structure 4 and directly contacts the insoluble electrode. The battery 91 supplies power to the insoluble electrode, and the electrode electrolyzes the seawater to produce effective chlorine, which prevents marine organisms from attaching near the ventilation structure 4 and plays a role in preventing biological pollution. When the air lubrication system is turned on again, high-speed gas enters the bubble generating unit again, discharges the seawater therein, and the electrode does not contact the seawater, and the reaction automatically stops.

[0051] Example 2

[0052] This embodiment provides an application method of a self-starting and stopping anti-fouling bubble generating device, wherein the anti-fouling component adopts an ultrasonic device, as follows:

[0053] The above-mentioned bubble generating device with self-start and stop anti-fouling is applied to the air lubrication system of the ship. The air inlet end of the air inlet pipe 45 is connected to the air source device 2 through the ventilation pipeline 3.

[0054] When the air lubrication system is turned on, the air source device 2 compresses the 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, driving the moving parts 102 in the ventilation chamber 42 to rotate, that is, the fan blades rotate, so that the generator 101 generates electricity. The generator 101 stores the electrical energy in the battery 91. In addition, under the action of the moving parts 102, the high-speed gas is evenly distributed in the ventilation chamber 42, and then enters the ventilation chamber 42, and passes through the gap between the ventilation chamber 42 and the removable cover plate 41, forming a dense mesoscale bubble layer covering the bottom of the ship, which has the effect of reducing the navigation resistance of the ship.

[0055] When the air lubrication system is turned off, the bubble generating unit is submerged in seawater, the liquid level switch detects the liquid level signal, and the battery 91 supplies power to the ultrasonic device. The ultrasonic device emits high-frequency ultrasonic waves, and the wall of the ventilation structure acts as a sound plate to carry the sound waves. Under the action of high-frequency sound waves, it is difficult for marine organisms such as algae and microorganisms to adhere to the wall surface, thereby preventing their growth and playing a role in preventing biological pollution. When the air lubrication system is turned on, the seawater in the bubble generating unit is emptied, 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 embodiment is only a preferred solution of the present invention, but it is not intended to limit the present invention. A person skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. A self-starting and stopping anti-fouling bubble generating device, characterized in that: It comprises a ventilation structure (4), an anti-fouling component (9) and a power generation component (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 intake pipe (45); the ventilation structure (4) is used to guide gas to the bottom of the ship and form a continuous air layer or discrete bubbles, thereby reducing the friction resistance of the entire ship; The anti-fouling component (9) comprises a battery (91) and an anti-fouling element (92); the anti-fouling component (9) hinders the attachment of marine organisms by ultrasonic or electrolytic chlorine production; The power generation component (10) comprises a generator (101) and a moving part (102); the power generation component (10) is used to convert the kinetic energy of the gas in the ventilation structure (4) into electrical energy, and store it in a battery (91) to provide electrical energy for the anti-fouling component (9).

2. The self-starting and stopping anti-fouling bubble generating device according to claim 1 is characterized in that: The ventilation structure (4) is fixed to the outer plate (1) of the ship through the ventilation structure bottom plate (43) and conforms to the outer surface of the ship; a detachable cover plate (41) is provided on the ventilation structure bottom plate (43); the interior of the ventilation structure (4) is a ventilation chamber (42); the outlet end of the air inlet pipe (45) is connected to the ventilation chamber (42), and the air inlet end of the air inlet pipe (45) is used to communicate with the air source device (2); a gap for gas circulation exists between the detachable cover plate (41) and the wall surface of the ventilation chamber (42); the battery chamber (44) is located around the ventilation chamber (42) or in the ventilation chamber (42); The power generation assembly (10) further comprises a fixing device (103), and the generator (101) is arranged in the ventilation chamber (42) through the fixing device (103), close to the outlet of the air inlet pipe (45); the moving component (102) is arranged on the generator (101) to convert the kinetic energy of the gas in the ventilation structure (4) into electrical energy; The anti-fouling assembly (9) further comprises a battery chamber outer panel (93), the battery (91) and the anti-fouling element (92) being fixed by the battery chamber outer panel (93) and arranged in the battery chamber (44); the battery (91) and the anti-fouling element (92) are respectively connected to the generator (101) in the power generation assembly (10) via waterproof wires; the battery (91) supplies power to the anti-fouling element (92).

3. The self-starting and stopping anti-fouling bubble generating device according to claim 2 is characterized in that: The anti-fouling element (92) uses an insoluble electrode; after the battery (91) supplies power to the anti-fouling element (92), the electrode electrolyzes seawater to produce effective chlorine, thereby preventing marine organisms from attaching.

4. The self-starting and stopping anti-fouling bubble generating device according to claim 2 is characterized in that: The anti-fouling element (92) adopts an ultrasonic device; after the battery (91) supplies power to the anti-fouling element (92), the ultrasonic device emits high-frequency ultrasonic vibrations to prevent marine organisms from attaching.

5. The self-starting and stopping anti-fouling bubble generating device according to claim 2 is characterized in that: The anti-fouling component (9) and the power generation component (10) are both modular and detachable components; the main materials of the anti-fouling component (9) and the power generation component (10) that need to come into contact with seawater are made of corrosion-resistant stainless steel, titanium alloy or high molecular polymer materials, or materials coated with corrosion-resistant coatings.

6. The self-starting and stopping anti-fouling bubble generating device according to claim 2 is characterized in that: The moving component (102) is a fan blade or a spiral blade, which can effectively utilize the kinetic energy of the gas.

7. The self-starting and stopping anti-fouling bubble generating device according to claim 2 is characterized in that: The ventilation structure bottom plate (43) is fixed to the outer plate (1) by welding.

8. The self-starting and stopping anti-fouling bubble generating device according to claim 2 is characterized in that: The detachable cover plate (41) is fixed to the bottom of the ventilation chamber (42) by means of bolt connection.

9. An application method of a self-starting and stopping anti-fouling bubble generating device, characterized in that: Specifically, the self-starting and stopping anti-fouling bubble generating device described in any one of claims 2 to 8 is applied to a ship air lubrication system; the air inlet end of the air inlet pipe (45) is connected to the air source device (2) through a 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), driving the moving parts (102) in the ventilation chamber (42) to rotate, so that the generator (101) generates electricity; the generator (101) stores the electric energy in 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 closed, the ventilation structure (4) is immersed in seawater, and the battery (91) supplies power to the anti-fouling element (92), which prevents marine organisms from attaching by electrolytic chlorine production or ultrasonic vibration.

10. A ship with a bubble generating device for self-starting and stopping anti-fouling, characterized in that: It comprises an air source device (2), a ventilation pipeline (3) and a self-starting and stopping anti-fouling bubble generating device as claimed in any one of claims 2 to 8; the air source device (2) is connected to the air inlet end of the air inlet pipe (45) through the ventilation pipeline (3).

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