Air supply system and method suitable for ultra-large air layer drag reduction ships

Abstract

The embodiment of the present invention discloses an air supply system and method suitable for a super-large air layer drag reduction ship. The air supply system includes: an air supply module, a power supply module, a cooling module and a control module; the air supply module is arranged in the ship cabin, and the air supply module includes a first air supply device, a second air supply device and an air storage device; the air storage device is connected to at least one first pipeline, one end of the first pipeline is connected to the air outlet of the second air supply device, and the other end is connected to the air inlet of the air storage device, and the air outlet of the air storage device is connected to the air layer drag reduction system through the second pipeline; the power supply module includes a power generation device and a first control device; the first control device is used to control the second air supply device; the cooling module includes a cooling pipeline and a first cooling device, a second cooling device and a third cooling device connected to the cooling pipeline; the control module is used to control the air supply module, the cooling module and the power supply module. This scheme realizes the air supply for the air layer drag reduction system.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of ship technology, and in particular to an air supply system and method suitable for ultra-large air layer drag reduction ships. Background Art

[0002] At present, the air layer drag reduction system is widely used in small and medium-sized ships, but less in ultra-large ships, and there are many technical problems. For example, the air supply method of the air layer drag reduction system suitable for ultra-large ships requires a large amount of electric power consumption, a large air supply flow rate of the system, and a large amount of fresh air; the heat dissipation when the system is working is large, which will cause the cabin temperature to increase sharply, thereby affecting the normal operation of the equipment in the cabin, and it is difficult to control the cabin temperature; the power consumption of this air supply method is huge, which has a great impact on the entire power grid. Therefore, the existing technology lacks a reasonable and efficient air supply method for the air layer drag reduction system suitable for ultra-large ships. Summary of the invention

[0003] The embodiment of the present invention provides an air supply system and method suitable for an ultra-large air layer drag reduction ship, so as to realize air supply for the air layer drag reduction system, dissipate heat for the air supply system, control the air supply system, and reduce the electric energy consumed by the air supply system.

[0004] In a first aspect, an embodiment of the present invention provides an air supply system suitable for a super-large air layer drag reduction ship, comprising: an air supply module, a power supply module, a cooling module and a control module;

[0005] The air supply module is arranged in the ship cabin, and comprises a first air supply device, a second air supply device and an air storage device; the first air supply device is used to supply air to the ship cabin; the air storage device is connected to at least one first pipeline, one end of the first pipeline is connected to the air outlet of the second air supply device, and the other end is connected to the air inlet of the air storage device, and the air outlet of the air storage device is connected to the air layer drag reduction system through the second pipeline;

[0006] The power supply module includes a power generation device and a first control device; the power generation device is used to supply power to the air supply system suitable for the ultra-large air layer drag reduction ship and the air layer drag reduction system; the first control device is connected to the second air supply device and is used to control the second air supply device;

[0007] The cooling module includes a cooling pipeline and a first cooling device, a second cooling device and a third cooling device connected to the cooling pipeline; the first cooling device is connected to the second air supply device by heat exchange, the second cooling device is connected to the first pipeline by heat exchange, and the third cooling device is connected to the first control device by heat exchange;

[0008] The control module is connected to the air supply module, the power supply module and the cooling module, and is used to control the air supply module, the cooling module and the power supply module.

[0009] Optionally, the control module includes a control unit, a first regulating valve, a second regulating valve and a third regulating valve;

[0010] The first regulating valve is connected between the water inlet of the first cooling device and the cooling pipeline, the second regulating valve is connected between the water inlet of the second cooling device and the cooling pipeline, and the third regulating valve is connected between the water inlet of the third cooling device and the cooling pipeline;

[0011] The control unit is connected to the first regulating valve, the second regulating valve and the third regulating valve, and is used to control the openings of the first regulating valve, the second regulating valve and the third regulating valve.

[0012] Optionally, the first air supply device includes an axial flow fan, the second air supply device includes an air compressor, and the air storage device includes an air bottle;

[0013] The control module is connected to the axial flow fan and the first control device. The control module is also used to control the air flow rate of the axial flow fan and control the air compressor through the first control device.

[0014] Optionally, the air intake pipeline of the air compressor is a curved pipeline, the air compressor is a closed structure, a sound insulation structure is arranged inside the air compressor, and a vibration reduction structure is arranged at the bottom of the air compressor.

[0015] Optionally, the first cooling device includes a first cooler, the second cooling device includes a second cooler, and the third cooling device includes a third cooler;

[0016] The control module is connected to the first cooler, the second cooler and the third cooler, and the control module is also used to control the first cooler, the second cooler and the third cooler.

[0017] Optionally, the cooling module further comprises a booster pump, and the booster pump is arranged at the water inlet of the cooling pipeline;

[0018] The control module is connected to the boost pump, and the control module is also used to control the boost pump.

[0019] Optionally, the power generation device includes a generator, the first control device includes a frequency conversion cabinet, the power supply module also includes a harmonic processor and a soft start cabinet, and the harmonic processor is connected to the generator and the frequency conversion cabinet.

[0020] Optionally, the outside of the first pipeline is covered with a sound insulation structure.

[0021] In a second aspect, an embodiment of the present invention further provides an air supply method applicable to a super-large air layer drag reduction ship, which is used to control the air supply system applicable to the super-large air layer drag reduction ship described in the first aspect, and the air supply method applicable to the super-large air layer drag reduction ship includes:

[0022] The control module controls the air supply module, the cooling module and the power supply module according to the working state of the air layer drag reduction system.

[0023] Optionally, the control module includes a control unit, a first regulating valve, a second regulating valve and a third regulating valve; the first air supply device includes an axial flow fan; the second air supply device includes an air compressor; the cooling module also includes a booster pump; the first cooling device includes a first cooler, the second cooling device includes a second cooler, and the third cooling device includes a third cooler; the power generation device includes a generator and a soft start cabinet, and the first control device includes a frequency conversion cabinet;

[0024] The control module controls the air supply module, the cooling module and the power supply module according to the working state of the air layer drag reduction system, including:

[0025] Before the air layer drag reduction system is turned on, the control unit controls the axial flow fan to supply air to the ship cabin, and at a first preset time before the air layer drag reduction system is turned on, controls the air flow of the axial flow fan, and controls the generator, the soft start cabinet, the first cooler, the second cooler, the third cooler, the boost pump, the first regulating valve, the second regulating valve and the third regulating valve to be turned on;

[0026] When the air layer drag reduction system is turned on, the air compressor is controlled to be turned on by the control unit, and after the air layer drag reduction system is turned on for a second preset time, the number of air compressors turned on, the air flow rate of the air compressors in the turned-on state, the air flow rate of the axial flow fan, the working state of the booster pump, and the opening degrees of the first regulating valve, the second regulating valve, and the third regulating valve are controlled according to the working states of the ship and the air layer drag reduction system;

[0027] When the air layer drag reduction system is turned off, the air compressor is controlled to be turned off by the control unit, and after the air layer drag reduction system is turned off for a third preset time, the boost pump, the first regulating valve, the second regulating valve, the third regulating valve, the generator and the soft start cabinet are controlled to be turned off.

[0028] The air supply system for super-large air layer drag reduction ships provided in an embodiment of the present invention includes an air supply module, a power supply module, a cooling module and a control module. The control module can control the first air supply device in the air supply module to provide fresh air to the ship's cabin according to the working state of the air layer drag reduction system, and control the second air supply device to inhale the air in the ship's cabin for pressurization, so as to realize air supply for the air layer drag reduction system. At the same time, the control module can also adjust the air flow of the first air supply device according to the working state of the air layer drag reduction system, and control the opening number and air flow of the second air supply device through the first control device in the power supply module to reduce power consumption. In addition, the control module can also control the first cooling device in the cooling module to cool the second air supply device, control the second cooling device to cool the second pipeline, and control the third cooling device to cool the first control device according to the working state of the air layer drag reduction system, so as to dissipate heat for the corresponding equipment and cabins. The technical solution of the embodiment of the present invention can not only realize air supply for the air layer drag reduction system, but also dissipate heat from the air supply system to avoid the temperature increase of the cabin and its internal equipment affecting the operation of the air supply system, control the air supply system, and help save the electric energy consumed by the air supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an air supply system applicable to a super-large air layer drag reduction ship provided by an embodiment of the present invention;

[0030] Figure 2 It is a structural schematic diagram of another air supply system applicable to a super-large air layer drag reduction ship provided by an embodiment of the present invention;

[0031] Figure 3 It is a flow chart of an air supply method applicable to a super-large air layer drag reduction ship provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] An embodiment of the present invention provides an air supply system suitable for an ultra-large air layer drag reduction ship. Figure 1 Schematic diagram of the structure of an air supply system for a super-large air layer drag reduction ship provided by an embodiment of the present invention. Figure 1 , the air supply system includes: an air supply module, a power supply module, a cooling module and a control module;

[0034] The air supply module is arranged in the ship cabin 10, and the air supply module includes a first air supply device 110, a second air supply device 120 and an air storage device 130; the first air supply device 110 is used to supply air to the ship cabin 10; the air storage device 130 is connected to at least one first pipeline 140, one end of the first pipeline 140 is connected to the air outlet of the second air supply device 120, and the other end is connected to the air inlet of the air storage device 130, and the air outlet of the air storage device 130 is connected to the air layer drag reduction system 100 through the second pipeline 150;

[0035] The power supply module includes a power generation device 210 and a first control device 220; the power generation device 210 is used to supply power to the air supply system and the air layer drag reduction system 100 suitable for the ultra-large air layer drag reduction ship; the first control device 220 is connected to the second air supply device 120, and is used to control the second air supply device 120;

[0036] The cooling module includes a cooling pipeline L and a first cooling device 310, a second cooling device 320 and a third cooling device 330 connected to the cooling pipeline L; the first cooling device 310 is connected to the second air supply device 120 for heat exchange, the second cooling device 320 is connected to the first pipeline 140 for heat exchange, and the third cooling device 330 is connected to the first control device 220 for heat exchange;

[0037] The control module is connected with the air supply module, the power supply module and the cooling module, and is used for controlling the air supply module, the cooling module and the power supply module.

[0038] Specifically, a super-large air layer drag reduction ship refers to a super-large ship that adopts air layer drag reduction technology. A super-large ship can be a ship with a total length of more than 300 mm, a draft of more than 20 meters, and a width of more than 60 meters. Air layer drag reduction technology refers to a technology that forms and maintains an air layer at the bottom of the ship by ventilating the bottom of the ship, isolating the bottom of the ship from the water, reducing the wet surface area, and reducing the resistance of the ship. The super-large air layer drag reduction ship in the embodiment of the present invention includes an air layer drag reduction system 100 and an air supply system, so that air is supplied to the air layer drag reduction system 100 through the air supply system. Among them, the air supply module, power supply module, cooling module and control module in the air supply system can all be arranged in the ship cabin 10.

[0039] The first air supply device 110 can be an axial flow fan or a blower. The air outlet side of the first air supply device 110 can be arranged toward the ship cabin 10 so as to supply air to the ship cabin 10 through the first air supply device 110. Part of the gas provided by the first air supply device 110 to the ship cabin 10 can be used for the air intake of the second air supply device 120, part of it can be used for fresh air in the ship cabin 10, and part of it can be used to take away the heat from the surfaces of various machines, thereby achieving a slight cooling effect. The excess gas brought by the first air supply device 110 can be retained from the gas outlet A in the ship cabin 10, and the gas outlet A can be a goose-shaped vent.

[0040] The second air supply device 120 may be a blower or an air compressor. The second air supply device 120 has an air inlet and an air outlet. The second air supply device 120 may inhale gas through the air inlet and pressurize the inhaled gas, so as to sequentially provide the pressurized gas to the air layer drag reduction system 100 through its own air outlet, the first pipeline 140, the air storage device 130 and the second pipeline 150, thereby supplying air to the air layer drag reduction system 100. The air storage device 130 is used to stabilize the gas inside to prevent the outlet gas from being turbulent.

[0041] Figure 1 The air storage device 130 is schematically configured to include four air inlets, each of which is connected to a first pipeline 140, and each first pipeline 140 is connected to a corresponding second air supply device 120. In practical applications, the number of air inlets of the air storage device 130 can be set according to the working conditions of the air layer drag reduction system 100, the air supply pressure range, and the air supply flow range, so as to set the number of the first pipeline 140 and the second air supply device 120, which is not limited in this embodiment.

[0042] The power generation device 210 may include a generator and a soft start cabinet. The first control device 220 may be implemented in a variety of ways. For example, the first control device 220 may be a soft start cabinet, a frequency conversion cabinet, or a centralized control cabinet. The frequency conversion cabinet may be used to adjust the flow and pressure of the second air supply device 120 according to the working conditions to reduce energy consumption. The soft start cabinet may be used to limit the starting current of the second air supply device 120.

[0043] Cooling water flows in the cooling pipeline L. By controlling the flow of cooling water in the cooling pipeline L, the first cooling device 310, the second cooling device 320 and the third cooling device 330 can cool the corresponding equipment by heat exchange. Among them, the first cooling device 310 is used to cool the second air supply device 120. For example, when the second air supply device 120 is an air compressor, the first cooling device 310 can cool the lubricating oil and the motor in the air compressor to reduce the temperature of the air compressor. The second cooling device 320 is used to cool the first pipeline 140 to reduce the temperature of the high-temperature and high-pressure gas in the first pipeline 140. For example, its temperature can be reduced to 60 degrees Celsius or below to prevent the high-temperature and high-pressure gas from causing the temperature of the cabin to rise, the high-temperature and high-pressure gas to scald people or pass through the hull pipeline to cause danger. The third cooling device 330 is used to cool the first control device 220 to avoid the first control device 220 from malfunctioning due to continuous accumulation of heat due to long-term operation, which helps to ensure the long-term stable operation of the first control device 220.

[0044] The control module may include a control unit 410 and a second control device 450, as well as various monitoring and control instruments (such as thermometers, flow meters, pressure sensors, and regulating valves, etc.) and alarm devices arranged in the air supply system. The control module can collect signals and control various devices in the entire air supply system. The control module can obtain the working status information of the air layer drag reduction system 100 to determine the opening and closing time of the air layer drag reduction system 100, so as to control the air supply module, the cooling module, and the power supply module according to the current working status of the air layer drag reduction system 100.

[0045] Exemplarily, before the air layer drag reduction system is turned on, the control module controls the first air supply device 110 to supply air to the ship cabin 10, and controls the first air supply device 110 to supply air at a small displacement to save energy consumption and maintain air circulation inside the ship cabin 10. At the same time, the cooling module is controlled not to work. At a first preset time before the air layer drag reduction system 100 is turned on, for example, 5 minutes before the air layer drag reduction system 100 is turned on, the air flow rate of the first air supply device 110 is controlled by the control module, and the power generation device 210 and the cooling module are controlled to work. For example, when the cooling module includes a water pump and a regulating valve, the water pump and the regulating valve are turned on to control the circulation of cooling water in the cooling pipeline L. When the air layer drag reduction system 100 is turned on, the control module controls the second air supply device 120 to be turned on, and the gas sucked by the second air supply device 120 is pressurized, and the pressurized gas is sequentially provided to the air layer drag reduction system 100 through its own air outlet, the first pipeline 140, the air storage device 130 and the second pipeline 150, so as to supply air to the air layer drag reduction system 100. When the air layer drag reduction system 100 is working, the control module monitors the working conditions of various devices in the air supply module, the power supply module and the cooling module, and controls them in real time according to the working conditions of various devices. After the air layer drag reduction system 100 is turned on for a second preset time, for example, after 20-60 minutes of normal operation of the air layer drag reduction system 100, since the air layer drag reduction system 100 has been operating stably, the control module can automatically make a real-time judgment based on the working state of the ship and the air layer drag reduction system 100, for example, based on the gas flow provided to the air layer drag reduction system 100 and the state of the air layer at the bottom of the ship, close at least part of the second air supply device 120, and only keep a small amount of the second air supply device 120 in working state, and adjust the air flow of the first air supply device 110 to reduce the air flow in the ship cabin 10, and control the cooling module to reduce the water flow in the cooling pipeline L. When the air layer drag reduction system 100 is turned off, the second air supply device 120 is controlled to be turned off by the control module, and after the air layer drag reduction system 100 is turned off for a third preset time, for example, 5 minutes after the air layer drag reduction system 100 is turned off, the cooling module is controlled to stop working, and the air flow of the first air supply device 110 is adjusted, and finally the power generation device 210 is turned off.

[0046] The air supply system for super-large air layer drag reduction ships provided in an embodiment of the present invention includes an air supply module, a power supply module, a cooling module and a control module. The control module can control the first air supply device in the air supply module to provide fresh air to the ship's cabin according to the working state of the air layer drag reduction system, and control the second air supply device to inhale the air in the ship's cabin for pressurization, so as to realize air supply for the air layer drag reduction system. At the same time, the control module can also adjust the air flow of the first air supply device according to the working state of the air layer drag reduction system, and control the opening number and air flow of the second air supply device through the first control device in the power supply module to reduce power consumption. In addition, the control module can also control the first cooling device in the cooling module to cool the second air supply device, control the second cooling device to cool the second pipeline, and control the third cooling device to cool the first control device according to the working state of the air layer drag reduction system, so as to dissipate heat for the corresponding equipment and cabins. The technical solution of the embodiment of the present invention can not only realize air supply for the air layer drag reduction system, but also dissipate heat from the air supply system to avoid the temperature increase of the cabin and its internal equipment affecting the operation of the air supply system, control the air supply system, and help save the electric energy consumed by the air supply system.

[0047] Continue to see Figure 1 On the basis of the above embodiment, optionally, a control module is provided including a control unit 410, a first regulating valve 420, a second regulating valve 430 and a third regulating valve 440; the first regulating valve 420 is connected between the water inlet of the first cooling device 310 and the cooling pipeline L, the second regulating valve 430 is connected between the water inlet of the second cooling device 320 and the cooling pipeline L, and the third regulating valve 440 is connected between the water inlet of the third cooling device 330 and the cooling pipeline L; the control unit 410 is connected to the first regulating valve 420, the second regulating valve 430 and the third regulating valve 440, and is used to control the opening of the first regulating valve 420, the second regulating valve 430 and the third regulating valve 440.

[0048] The number of control units 410 can be set according to requirements. Figure 1 The control module is exemplarily provided to include two control units 410, and the control unit 410 may be a control box. The control unit 410 controls the opening (including opening, closing, and degree of opening) of the first regulating valve 420, the second regulating valve 430, and the third regulating valve 440 according to the current working state of the air layer drag reduction system 100, so as to adjust the water flow in the first cooling device 310, the second cooling device 320, and the third cooling device 330. Optionally, the control module may further include a second control device 450 connected to the control unit 410, and the second control device 450 may collect signals and control various devices in the entire air supply system through the control unit 410.

[0049] Continue to see Figure 1 Optionally, the cooling module further includes a booster pump 340, which is disposed at the water inlet of the cooling pipeline L; the control module is connected to the booster pump 340, and the control module is also used to control the booster pump 340. Exemplarily, the control module is connected to the booster pump 340 through the control unit 410 to control the booster pump 340 according to the current working state of the air layer drag reduction system 100. By controlling the operation of the booster pump 340, cooling water with sufficient pressure and flow can be provided to the cooling pipeline L, and the cooling water in the cooling pipeline L can be adjusted to achieve energy-saving effects.

[0050] Figure 2 1 is a schematic diagram of another air supply system for a super-large air layer drag reduction ship provided by an embodiment of the present invention. Figure 1 and Figure 2 Optionally, the first air supply device 110 includes an axial flow fan 111, the second air supply device 120 includes an air compressor 121, and the air storage device 130 includes an air bottle 131; the control module is connected to the axial flow fan 111 and the first control device 220, and the control module is also used to control the air flow of the axial flow fan 111, and control the air compressor 121 through the first control device 220. Exemplarily, the control module connects the axial flow fan 111 and the first control device 220 through the control unit 410, so as to control the air flow of the axial flow fan 111 according to the current working state of the air layer drag reduction system 100, and control the air compressor 121 through the first control device 220. Among them, the air compressor 121 can be a low-pressure air compressor.

[0051] Combination Figure 1 and Figure 2Optionally, the air intake pipeline (not shown in the figure) of the air compressor 121 is set as a curved pipeline, the air compressor 121 is a closed structure, a sound insulation structure is set inside the air compressor 121, and a vibration reduction structure is set at the bottom of the air compressor 121. Exemplarily, the length of the air intake pipeline of the air compressor 121 can be adjusted, and the path of the air intake pipeline can be set so that the air intake pipeline is a curved pipeline to reduce the air noise generated by the gas at the air intake pipeline of the air compressor 121. The air compressor 121 may include a closed box to form a closed structure. The sound insulation structure may be sound insulation cotton, which may be set inside the box of the air compressor 121 and at the joints between the boxes to reduce the mechanical noise generated by the air compressor 121. The vibration reduction structure at the bottom of the air compressor 121 may be a vibration isolation pad to reduce the vibration and noise of the air compressor 121 when the air compressor 121 is in operation as a whole. Optionally, sound insulation cotton designed according to the noise signal characteristics of the air source equipment can be added to the inner wall of the ship cabin 10 to reduce noise propagation. A sound insulation structure may also be coated on the outside of the first pipeline 140 to reduce the aerodynamic noise of the pipeline. The technical solution of the embodiment of the present invention combines various vibration reduction and noise reduction measures to help reduce the noise in the cabin where the air supply system is located to meet the comfort requirements of classification society specifications.

[0052] Combination Figure 1 and Figure 2 Optionally, the power generation device 210 includes a generator 211 and a soft start cabinet (not specifically shown in the figure), and the soft start can be used to adjust the interference caused to the power grid when the air compressor is started. In this embodiment, the first control device 220 is a frequency conversion cabinet 221 as an example for schematic description. In actual applications, there can be many ways to implement the first control device 220. For example, the first control device 220 can also be a soft start cabinet or a centralized control cabinet, etc., and this embodiment does not limit this.

[0053] Optionally, the power supply module further includes a harmonic processor 230, which is connected to the generator 211 and the frequency conversion cabinet 221, and is used to neutralize the harmonics generated by the frequency conversion cabinet 221. Exemplarily, the control module can adjust the flow and pressure of each air compressor 121 through the frequency conversion cabinet 221 according to the current working state of the air layer drag reduction system 100 to reduce energy consumption. The harmonic processor 230 helps to reduce the impact of the frequency conversion cabinet 221 on the air compressor 121 and the entire ship power grid by neutralizing the harmonics generated by the frequency conversion cabinet 221.

[0054] Combination Figure 1 and Figure 2Optionally, the first cooling device 310 includes a first cooler 311, the second cooling device 320 includes a second cooler 321, and the third cooling device 330 includes a third cooler 331; the control module is connected to the first cooler 311, the second cooler 321, and the third cooler 331, and the control module is also used to control the first cooler 311, the second cooler 321, and the third cooler 331. Exemplarily, the control module can control the first cooler 311, the second cooler 321, and the third cooler 331 according to the current working state of the air layer drag reduction system 100, so as to cool the air compressor 121 through the first cooler 311, cool the second pipeline 150 through the second cooler 321, and cool the frequency conversion cabinet 221 through the third cooler 331.

[0055] Below Figure 2 Take the example to explain the working principle of the gas supply system. Figure 2On the basis of the above embodiments, before the air layer drag reduction system 110 is turned on, the control unit 410 controls the axial flow fan 111 to supply air to the ship cabin 10, and controls the axial flow fan 111 to supply air with a small displacement to save energy consumption and maintain air circulation inside the ship cabin 10. At the same time, the first regulating valve 420, the second regulating valve 430 and the third regulating valve 440 are controlled to be closed. At a first preset time before the air layer drag reduction system 100 is turned on, for example, 5 minutes before the air layer drag reduction system 100 is turned on, the air flow rate of the axial flow fan 111 is controlled by the control unit 410, and the generator 211, the first cooler 311, the second cooler 321, the third cooler 331, the booster pump 340, the first regulating valve 420, the second regulating valve 430 and the third regulating valve 440 are controlled to be turned on, so that the cooling water can circulate in the cooling pipeline L. When the air layer drag reduction system 110 is turned on, the control unit 410 controls the air compressor 121 to turn on, and the air compressor 121 pressurizes the gas sucked in, and sequentially provides the pressurized gas to the air layer drag reduction system 100 through its own gas outlet, the first pipeline 140, the air bottle 131 and the second pipeline 150, so as to supply gas to the air layer drag reduction system 100. When the air layer drag reduction system 100 is working, the control unit 410 monitors the working conditions of various devices in the air supply module, the power supply module and the cooling module, and controls them in real time according to the working conditions of various devices. After the air layer drag reduction system 100 is turned on for a second preset time, for example, after 20-60 minutes of normal operation of the air layer drag reduction system 100, since the air layer drag reduction system 100 has been operating stably, the control unit 410 can automatically make a real-time judgment based on the working state of the ship and the air layer drag reduction system 100, so as to control the number of air compressors 121 turned on, the air flow of the axial flow fan 111, and the working state of the booster pump 340 according to the gas flow provided to the air layer drag reduction system 100, for example, at least part of the air compressors 121 are turned off, only a small number of air compressors 121 are kept in working state, and the air flow of the axial flow fan 111 is adjusted to reduce the air flow in the ship cabin 10. At the same time, the opening of the first regulating valve 420, the second regulating valve 430 and the third regulating valve 440 are controlled to reduce the water flow in the cooling pipeline L. When the air layer drag reduction system 110 is turned off, the air compressor 121 is controlled to be turned off through the control unit 410, and after the air layer drag reduction system 110 is turned off for a third preset time, for example, 5 minutes after the air layer drag reduction system 110 is turned off, the boost pump 340, the first regulating valve 420, the second regulating valve 430, the third regulating valve 440 and the generator 211 are controlled to be turned off.

[0056] An embodiment of the present invention further provides an air supply method applicable to a super-large air layer drag reduction ship, which is used to control the air supply system applicable to a super-large air layer drag reduction ship provided by any embodiment of the present invention. Figure 3 1 is a flow chart of an air supply method applicable to a super-large air layer drag reduction ship provided in an embodiment of the present invention. Figure 3 , the gas supply method specifically comprises the following steps:

[0057] S110. Obtaining working status information of the air layer drag reduction system through a control module.

[0058] S120, controlling the air supply module, the cooling module and the power supply module according to the working state of the air layer drag reduction system through the control module.

[0059] The air supply method for a super-large air layer drag reduction ship provided in an embodiment of the present invention includes an air supply module, a power supply module, a cooling module and a control module. The control module can control the first air supply device in the air supply module to provide fresh air to the ship's cabin according to the working state of the air layer drag reduction system, and control the second air supply device to inhale the air in the ship's cabin for pressurization, so as to realize air supply for the air layer drag reduction system. At the same time, the control module can also adjust the air flow of the first air supply device according to the working state of the air layer drag reduction system, and control the opening number of the second air supply device and the flow rate of the opened air supply device through the first control device in the power supply module to reduce power consumption. In addition, the control module can also control the first cooling device in the cooling module to cool the second air supply device, control the second cooling device to cool the second pipeline, and control the third cooling device to cool the first control device according to the working state of the air layer drag reduction system, so as to dissipate heat for the corresponding equipment and cabins. The technical solution of the embodiment of the present invention can not only realize air supply for the air layer drag reduction system, but also dissipate heat for the air supply system to avoid the temperature increase of the cabin and its internal equipment affecting the operation of the air supply system, and also help save the electric energy consumed by the air supply system.

[0060] Based on the above embodiment, optionally, step S120 specifically includes:

[0061] Before the air layer drag reduction system is turned on, the control unit controls the axial flow fan to supply air to the ship cabin, and at a first preset time before the air layer drag reduction system is turned on, controls the air flow of the axial flow fan, and controls the generator, the soft start cabinet, the first cooler, the second cooler, the third cooler, the booster pump, the first regulating valve, the second regulating valve and the third regulating valve to be turned on;

[0062] When the air layer drag reduction system is turned on, the air compressor is controlled to be turned on through the control unit, and after the air layer drag reduction system is turned on for a second preset time, the number of air compressors turned on, the air flow rate of the air compressors in the turned-on state, the air flow rate of the axial flow fan, the working state of the booster pump, and the opening degrees of the first regulating valve, the second regulating valve, and the third regulating valve are controlled according to the working states of the ship and the air layer drag reduction system;

[0063] When the air layer drag reduction system is turned off, the air compressor is controlled to be turned off through the control unit, and after the air layer drag reduction system is turned off for a third preset time, the boost pump, the first regulating valve, the second regulating valve, the third regulating valve, the generator and the soft start cabinet are controlled to be turned off.

[0064] The technical solution of the embodiment of the present invention is applicable to Figure 2 The air supply system shown is suitable for controlling a super-large air layer drag reduction ship. The specific technical principles and technical effects produced can be understood by referring to the above embodiments, and will not be repeated here.

[0065] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An air supply method suitable for ultra-large air layer drag reduction ships, characterized in that: Used to control an air supply system suitable for a super-large air layer drag reduction ship, wherein the air supply system of the super-large air layer drag reduction ship comprises: an air supply module, a power supply module, a cooling module and a control module; The air supply module is arranged in the ship cabin, and comprises a first air supply device, a second air supply device and an air storage device; the first air supply device is used to supply air to the ship cabin; the air storage device is connected to at least one first pipeline, one end of the first pipeline is connected to the air outlet of the second air supply device, and the other end is connected to the air inlet of the air storage device, and the air outlet of the air storage device is connected to the air layer drag reduction system through the second pipeline; The power supply module includes a power generation device and a first control device; the power generation device is used to supply power to the air supply system suitable for the ultra-large air layer drag reduction ship and the air layer drag reduction system; the first control device is connected to the second air supply device and is used to control the second air supply device; The cooling module includes a cooling pipeline and a first cooling device, a second cooling device and a third cooling device connected to the cooling pipeline; the first cooling device is connected to the second air supply device by heat exchange, the second cooling device is connected to the first pipeline by heat exchange, and the third cooling device is connected to the first control device by heat exchange; The control module is connected to the air supply module, the power supply module and the cooling module, and is used to control the air supply module, the cooling module and the power supply module; The air supply method applicable to the ultra-large air layer drag reduction ship comprises: The air supply module, the cooling module and the power supply module are controlled by the control module according to the working state of the air layer drag reduction system; The control module includes a control unit, a first regulating valve, a second regulating valve and a third regulating valve; the first air supply device includes an axial flow fan; the second air supply device includes an air compressor; the cooling module also includes a booster pump; the first cooling device includes a first cooler, the second cooling device includes a second cooler, and the third cooling device includes a third cooler; the power generation device includes a generator and a soft start cabinet, and the first control device includes a frequency conversion cabinet; The control module controls the air supply module, the cooling module and the power supply module according to the working state of the air layer drag reduction system, including: Before the air layer drag reduction system is turned on, the control unit controls the axial flow fan to supply air to the ship cabin, and at a first preset time before the air layer drag reduction system is turned on, controls the air flow of the axial flow fan, and controls the generator, the soft start cabinet, the first cooler, the second cooler, the third cooler, the boost pump, the first regulating valve, the second regulating valve and the third regulating valve to be turned on; When the air layer drag reduction system is turned on, the air compressor is controlled to be turned on by the control unit, and after the air layer drag reduction system is turned on for a second preset time, the number of air compressors turned on, the air flow rate of the air compressors in the turned-on state, the air flow rate of the axial flow fan, the working state of the booster pump, and the opening degrees of the first regulating valve, the second regulating valve, and the third regulating valve are controlled according to the working states of the ship and the air layer drag reduction system; When the air layer drag reduction system is turned off, the air compressor is controlled to be turned off by the control unit, and after the air layer drag reduction system is turned off for a third preset time, the boost pump, the first regulating valve, the second regulating valve, the third regulating valve, the generator and the soft start cabinet are controlled to be turned off.

2. The air supply method for a super-large air layer drag reduction ship according to claim 1, characterized in that: The first regulating valve is connected between the water inlet of the first cooling device and the cooling pipeline, the second regulating valve is connected between the water inlet of the second cooling device and the cooling pipeline, and the third regulating valve is connected between the water inlet of the third cooling device and the cooling pipeline; The control unit is connected to the first regulating valve, the second regulating valve and the third regulating valve, and is used to control the openings of the first regulating valve, the second regulating valve and the third regulating valve.

3. The air supply method for a super-large air layer drag reduction ship according to claim 1, characterized in that: The gas storage device comprises an air bottle; The control module is connected to the axial flow fan and the first control device. The control module is also used to control the air flow rate of the axial flow fan and control the air compressor through the first control device.

4. The air supply method for a super-large air layer drag reduction ship according to claim 3, characterized in that: The air intake pipeline of the air compressor is a curved pipeline, the air compressor is a closed structure, a sound insulation structure is arranged inside the air compressor, and a vibration reduction structure is arranged at the bottom of the air compressor.

5. The air supply method for a super-large air layer drag reduction ship according to claim 1, characterized in that: The control module is connected to the first cooler, the second cooler and the third cooler, and the control module is also used to control the first cooler, the second cooler and the third cooler.

6. The air supply method for a super-large air layer drag reduction ship according to claim 1, characterized in that: The boost pump is arranged at the water inlet of the cooling pipeline; The control module is connected to the boost pump, and the control module is also used to control the boost pump.

7. The air supply method for a super-large air layer drag reduction ship according to claim 1, characterized in that: The power supply module also includes a harmonic processor, which is connected to the generator and the frequency conversion cabinet.

8. The air supply method for a super-large air layer drag reduction ship according to claim 1, characterized in that: The outside of the first pipeline is covered with a sound insulation structure.

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