CN114228899A - Gas supply system and method suitable for ultra-large gas layer resistance reduction ship - Google Patents
Gas supply system and method suitable for ultra-large gas layer resistance reduction ship Download PDFInfo
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- CN114228899A CN114228899A CN202210110798.XA CN202210110798A CN114228899A CN 114228899 A CN114228899 A CN 114228899A CN 202210110798 A CN202210110798 A CN 202210110798A CN 114228899 A CN114228899 A CN 114228899A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
- B63J2/12—Heating; Cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
- B63B2001/387—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes using means for producing a film of air or air bubbles over at least a significant portion of the hull surface
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
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- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The embodiment of the invention discloses a gas supply system and a gas supply method suitable for an ultra-large gas layer drag reduction ship. Wherein, the gas supply system includes: the device comprises an air supply module, a power supply module, a cooling module and a control module; the gas supply module is arranged in the cabin of the ship and comprises a first gas supply device, a second gas supply device and a gas storage device; the gas storage device is connected with at least one first pipeline, one end of the first pipeline is connected with the gas outlet of the second gas supply device, the other end of the first pipeline is connected with the gas inlet of the gas storage device, and the gas outlet of the gas storage device is connected with the gas layer resistance reduction system through the second pipeline; the power supply module comprises a power generation device and a first control device; the first control device is used for controlling the second air supply device; the cooling module comprises a cooling pipeline, a first cooling device, a second cooling device and a third cooling device which are connected in the cooling pipeline; the control module is used for controlling the air supply module, the cooling module and the power supply module. This scheme has been realized supplying gas for gas layer drag reduction system.
Description
Technical Field
The embodiment of the invention relates to the technical field of ships, in particular to an air supply system and an air supply method suitable for an ultra-large air layer drag reduction ship.
Background
At present, a gas layer drag reduction system is applied to small and medium-sized ships more, and is applied to ultra-large ships less, so that more technical problems exist. For example, the air supply mode of the air layer drag reduction system suitable for the ultra-large ship needs large consumed electric power, the air supply flow of the system is large, and the fresh air volume is large; the heat dissipation capacity of the system during working is large, so that the temperature of the cabin is increased rapidly, normal working of equipment in the cabin is affected, and the difficulty in controlling the temperature of the cabin is large; the air supply mode has huge power consumption and has great influence on the whole power grid. Therefore, the prior art lacks a reasonable and efficient gas supply mode suitable for a gas layer drag reduction system of a super-large ship.
Disclosure of Invention
The embodiment of the invention provides a gas supply system and a method suitable for an ultra-large gas layer resistance-reducing ship, which are used for supplying gas for a gas layer resistance-reducing system, dissipating heat of the gas supply system, controlling the gas supply system and reducing electric energy consumed by the gas supply system.
In a first aspect, an embodiment of the present invention provides an air supply system suitable for an ultra-large air-layer drag reduction ship, including: the device comprises an air supply module, a power supply module, a cooling module and a control module;
the gas supply module is arranged in the cabin of the ship and comprises a first gas supply device, a second gas supply device and a gas storage device; the first air supply device is used for supplying air to the ship cabin; the gas storage device is connected with at least one first pipeline, one end of the first pipeline is connected with the gas outlet of the second gas supply device, the other end of the first pipeline is connected with the gas inlet of the gas storage device, and the gas outlet of the gas storage device is connected with a gas layer resistance reduction system through a second pipeline;
the power supply module comprises a power generation device and a first control device; the power generation device is used for supplying power to the gas supply system suitable for the ultra-large type gas layer drag reduction ship and the gas layer drag reduction system; the first control device is connected with the second air supply device and is used for controlling the second air supply device;
the cooling module comprises a cooling pipeline, and a first cooling device, a second cooling device and a third cooling device which are connected in the cooling pipeline; the first cooling device is in heat exchange connection with the second air supply device, the second cooling device is in heat exchange connection with the first pipeline, and the third cooling device is in heat exchange connection with the first control device;
the control module is connected with the gas supply module, the power supply module and the cooling module and used for controlling the gas supply module, the cooling module and the power supply module.
Optionally, the control module comprises a control unit, a first regulating valve, a second regulating valve and a third regulating valve;
the first regulating valve is connected between a water inlet of the first cooling device and the cooling line, the second regulating valve is connected between a water inlet of the second cooling device and the cooling line, and the third regulating valve is connected between a water inlet of the third cooling device and the cooling line;
the control unit is connected with the first regulating valve, the second regulating valve and the third regulating valve and used for controlling the opening degrees of the first regulating valve, the second regulating valve and the third regulating valve.
Optionally, the first air supply device comprises an axial flow fan, the second air supply device comprises an air compressor, and the air storage device comprises an air bottle;
the control module is connected with the axial flow fan and the first control device, and is also used for controlling the air flow of the axial flow fan and controlling the air compressor through the first control device.
Optionally, the air inlet pipeline of the air compressor is a bent pipeline, the air compressor is of a closed structure, a sound insulation structure is arranged inside the air compressor, and a vibration damping structure is arranged at the bottom of the air compressor.
Optionally, the first cooling device comprises a first cooler, the second cooling device comprises a second cooler, and the third cooling device comprises a third cooler;
the control module is connected with the first cooler, the second cooler and the third cooler, and is further used for controlling the first cooler, the second cooler and the third cooler.
Optionally, the cooling module further comprises a booster pump, and the booster pump is arranged at a water inlet of the cooling pipeline;
the control module is connected with the booster pump, and the control module is also used for controlling the booster pump.
Optionally, the power generation device includes a power generator, the first control device includes a frequency conversion cabinet, the power supply module further includes a harmonic processor and a soft start cabinet, and the harmonic processor is connected to the power generator and the frequency conversion cabinet.
Optionally, the first pipeline is externally coated with a sound insulation structure.
In a second aspect, an embodiment of the present invention further provides an air supply method suitable for a very large air-layer drag reduction ship, which is used to control the air supply system suitable for the very large air-layer drag reduction ship in the first aspect, and the air supply method suitable for the very large air-layer drag reduction ship includes:
and the control module controls the gas supply module, the cooling module and the power supply module according to the working state of the gas layer drag reduction system.
Optionally, the control module comprises a control unit, a first regulating valve, a second regulating valve and a third regulating valve; the first air supply device comprises an axial flow fan; the second air supply device comprises an air compressor; the cooling module further comprises a booster pump; the first cooling device comprises a first cooler, the second cooling device comprises a second cooler, and the third cooling device comprises a third cooler; the power generation device comprises a generator and a soft start cabinet, and the first control device comprises a frequency conversion cabinet;
through the control module is according to the operating condition of gas layer drag reduction system, right the gas supply module, the cooling module with power module controls includes:
before the air layer drag reduction system is started, the control unit controls the axial flow fan to supply air to a ship cabin, controls the air flow of the axial flow fan at a first preset time before the air layer drag reduction system is started, 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 started;
when the gas layer drag reduction system is started, the control unit controls the air compressors to be started, and controls the starting number of the air compressors, the gas flow of the air compressors in the starting state, the gas flow 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 according to the working states of a ship and the gas layer drag reduction system after the gas layer drag reduction system is started for a second preset time;
when the gas layer drag reduction system is closed, the control unit controls the air compressor to be closed, and after the gas layer drag reduction system is closed for a third preset time, the booster pump, the first regulating valve, the second regulating valve, the third regulating valve, the generator and the soft start cabinet are controlled to be closed.
The gas supply system suitable for the ultra-large gas layer drag reduction ship comprises a gas supply module, a power supply module, a cooling module and a control module. The control module can control a first air supply device in the air supply module to provide fresh air for the ship cabin according to the working state of the air layer resistance reduction system, and control a second air supply device to suck air in the ship cabin for pressurization, so that air supply for the air layer resistance reduction system is realized. Meanwhile, the control module can also adjust the air flow of the first air supply device according to the working state of the air layer resistance reduction system, and controls the opening number and the air flow of the second air supply device through the first control device in the power supply module so as to reduce the power consumption. And 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 resistance reduction system, so that the corresponding equipment and the cabin are cooled. According to the technical scheme of the embodiment of the invention, the air supply of the air layer resistance reduction system is realized, and the heat dissipation of the air supply system can be realized, so that the condition that the work of the air supply system is influenced by the temperature rise of the propagation cabin and the internal equipment is avoided, the air supply system is controlled, and the electric energy consumed by the air supply system is saved.
Drawings
FIG. 1 is a schematic structural diagram of an air supply system suitable for a very large air-layer drag reduction ship according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another gas supply system suitable for a very large gas-layer drag reduction vessel according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of an air supply method suitable for an ultra-large air-layer drag reduction ship according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The embodiment of the invention provides an air supply system suitable for an ultra-large air layer drag reduction ship. Fig. 1 is a schematic structural diagram of an air supply system suitable for an ultra-large air-layer drag reduction ship according to an embodiment of the present invention. Referring to fig. 1, the gas supply system includes: the device 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 10 and comprises 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 compartment 10; the gas storage device 130 is connected with at least one first pipeline 140, one end of the first pipeline 140 is connected with the gas outlet of the second gas supply device 120, the other end of the first pipeline 140 is connected with the gas inlet of the gas storage device 130, and the gas outlet of the gas storage device 130 is connected with the gas layer drag reduction system 100 through a second pipeline 150;
the power supply module comprises a power generation device 210 and a first control device 220; the power generation device 210 is used for supplying power to a gas supply system suitable for the ultra-large gas layer drag reduction ship and the gas layer drag reduction system 100; the first control device 220 is connected to the second air supply device 120, and is used for controlling the second air supply device 120;
the cooling module includes a cooling line L and a first cooling device 310, a second cooling device 320, and a third cooling device 330 connected in the cooling line L; the first cooling device 310 is in heat exchange connection with the second air supply device 120, the second cooling device 320 is in heat exchange connection with the first pipeline 140, and the third cooling device 330 is in heat exchange connection with the first control device 220;
the control module is connected with the gas supply module, the power supply module and the cooling module and is used for controlling the gas supply module, the cooling module and the power supply module.
Specifically, the ultra-large gas layer drag reduction ship refers to an ultra-large ship adopting a gas layer drag reduction technology. The ultra-large ship can be a ship with the total length of more than 300mm, the ship draught of more than 20 meters and the ship width of more than 60 meters. The air layer drag reduction technology is a technology for reducing ship resistance by ventilating the bottom of a ship, forming and maintaining an air layer at the bottom of the ship, isolating the bottom of the ship from water and reducing the wet surface area. The ultra-large type gas layer drag reduction ship in the embodiment of the invention comprises a gas layer drag reduction system 100 and a gas supply system, so that gas is supplied to the gas layer drag reduction system 100 through the gas supply system. Wherein, among the air supply system: the air supply module, the power supply module, the cooling module and the control module may all be disposed within the marine vessel compartment 10.
The first air supply device 110 may be an axial fan or a blower, the air outlet side of the first air supply device 110 may be disposed toward the ship cabin 10 to supply air to the ship cabin 10 through the first air supply device 110, part of the air supplied to the ship cabin 10 by the first air supply device 110 may be used for air suction of the second air supply device 120, part of the air may be used for fresh air in the ship cabin 10, and part of the air may be used for taking away heat from surfaces of various machines, so as to achieve a slight cooling effect, excess air brought by the first air supply device 110 may be left from an air outlet a in the ship cabin 10, and the air outlet a may be a goose-shaped vent.
The second gas supply device 120 may be a blower or an air compressor, the second gas supply device 120 has a gas inlet and a gas outlet, and the second gas supply device 120 may suck gas through the gas inlet and pressurize the gas sucked by the gas inlet, so as to supply the pressurized gas to the gas layer drag reduction system 100 through the gas outlet, the first pipeline 140, the gas storage device 130 and the second pipeline 150 thereof in sequence, thereby realizing gas supply for the gas layer drag reduction system 100. The gas storage device 130 is used for stabilizing the gas inside so as to prevent the disorder of the gas at the outlet.
Fig. 1 schematically shows that the gas storage device 130 includes four gas inlets, each gas inlet is connected to one first pipeline 140, and each first pipeline 140 is connected to a corresponding second gas supply device 120. In practical applications, the number of the air inlets of the air storage device 130 may be set according to the working condition, the air supply pressure range, the air supply flow range, and the like of the air layer drag reduction system 100, 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.
The power generation device 210 may include a generator and a soft start cabinet, and the first control device 220 has various implementations, 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 can be used for adjusting the flow and pressure of the second air supply device 120 according to the working condition, so that energy consumption is reduced. The soft start cabinet may be used to limit the start-up current of the second gas supply 120.
The cooling line L is filled with cooling water, and the first cooling device 310, the second cooling device 320, and the third cooling device 330 can cool the corresponding devices by heat exchange by controlling the flow of the cooling water through the cooling line L. The first cooling device 310 is used for cooling 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 lubricating oil, a motor and the like in the air compressor so as to reduce the temperature of the air compressor. The second cooling device 320 is used for cooling the first pipeline 140 to reduce the temperature of the high-temperature and high-pressure gas in the first pipeline 140, for example, the temperature can be reduced to 60 degrees celsius or below, so as to prevent the high-temperature and high-pressure gas from causing the cabin temperature to rise, scalding people or causing danger through the ship pipeline. The third cooling device 330 is used for cooling the first control device 220 to avoid the first control device 220 from generating a failure due to continuous accumulation of heat during long-term operation, which helps to ensure long-term stable operation of the first control device 220.
The control module may include the control unit 410 and the second control device 450, and various monitoring and control instruments (e.g., a thermometer, a flowmeter, a pressure sensor, a regulating valve, etc.) and alarm devices provided in the gas supply system. The control module can be used for carrying out signal acquisition and control on various devices in the whole gas supply system. The control module may obtain the working state information of the gas layer drag reduction system 100 to determine the time of opening and closing the gas layer drag reduction system 100, thereby controlling the gas supply module, the cooling module, and the power supply module according to the current working state of the gas layer drag reduction system 100.
Illustratively, before the air layer drag reduction system is started, 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, so as to save energy consumption, keep the air inside the ship cabin 10 circulated, and simultaneously, control the cooling module not to work. At a first preset time before the gas layer drag reduction system 100 is started, for example, 5 minutes before the gas layer drag reduction system 100 is started, the control module controls the air flow of the first air supply device 110 and controls the power generation device 210 and the cooling module to work, for example, when the cooling module includes a water pump and a regulating valve, the water pump and the regulating valve are started to control the circulation of cooling water in the cooling pipeline L. When the gas layer drag reduction system 100 is started, the control module controls the second gas supply device 120 to be started, the second gas supply device 120 is used for pressurizing gas sucked by the gas layer drag reduction system, and the pressurized gas is provided to the gas layer drag reduction system 100 through the gas outlet of the gas layer drag reduction system, the first pipeline 140, the gas storage device 130 and the second pipeline 150 in sequence, so that gas supply of the gas layer drag reduction system 100 is realized. When the gas layer drag reduction system 100 works, the working conditions of various devices in the gas supply module, the power supply module and the cooling module are monitored through the control module, and the gas layer drag reduction system is controlled in real time according to the working conditions of the various devices. After the gas layer drag reduction system 100 is started for a second preset time, for example, after 20-60 minutes of normal operation of the gas layer drag reduction system 100, since the gas layer drag reduction system 100 has been stably operated, at this time, according to the operating states of the ship and the gas layer drag reduction system 100, the control module automatically judges in real time, for example, according to the gas flow rate provided to the gas layer drag reduction system 100 and the state of the gas layer at the bottom of the ship, at least part of the second gas supply devices 120 are closed, only a small number of the second gas supply devices 120 are kept in the operating state, and the gas flow rate of the first gas supply devices 110 is adjusted to reduce the air flow rate in the ship cabin 10, and at the same time, the cooling module is controlled to reduce the water flow rate in the cooling pipeline L. When the gas layer drag reduction system 100 is turned off, the control module controls the second gas supply device 120 to be turned off, and after the gas layer drag reduction system 100 is turned off for a third preset time, for example, after 5 minutes from the turning off of the gas layer drag reduction system 100, the control module stops working, adjusts the gas flow rate of the first gas supply device 110, and finally turns off the power generation device 210.
The gas supply system suitable for the ultra-large gas layer drag reduction ship comprises a gas supply module, a power supply module, a cooling module and a control module. The control module can control a first air supply device in the air supply module to provide fresh air for the ship cabin according to the working state of the air layer resistance reduction system, and control a second air supply device to suck air in the ship cabin for pressurization, so that air supply for the air layer resistance reduction system is realized. Meanwhile, the control module can also adjust the air flow of the first air supply device according to the working state of the air layer resistance reduction system, and controls the opening number and the air flow of the second air supply device through the first control device in the power supply module so as to reduce the power consumption. And 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 resistance reduction system, so that the corresponding equipment and the cabin are cooled. According to the technical scheme of the embodiment of the invention, the air supply of the air layer resistance reduction system is realized, and the heat dissipation of the air supply system can be realized, so that the condition that the work of the air supply system is influenced by the temperature rise of the propagation cabin and the internal equipment is avoided, the air supply system is controlled, and the electric energy consumed by the air supply system is saved.
With continued reference to fig. 1, based on the above embodiment, optionally, a control module is provided that includes 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 line L, the second regulating valve 430 is connected between the water inlet of the second cooling device 320 and the cooling line L, and the third regulating valve 440 is connected between the water inlet of the third cooling device 330 and the cooling line L; the control unit 410 is connected to the first, second, and third regulating valves 420, 430, and 440, and is configured to control the opening degrees of the first, second, and third regulating valves 420, 430, and 440.
The number of the control units 410 can be set according to requirements, fig. 1 exemplarily sets that the control module includes two control units 410, and the control units 410 can be control boxes. The control unit 410 controls the opening degrees (including the opening, closing, and opening degrees) of the first adjusting valve 420, the second adjusting valve 430, and the third adjusting valve 440 to adjust the water flow rates in the first cooling device 310, the second cooling device 320, and the third cooling device 330 according to the current operating state of the air-bed drag reduction system 100. 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 and control signals of various devices in the whole air supply system through the control unit 410.
With continued reference to fig. 1, optionally, the cooling module further includes a booster pump 340, the booster pump 340 being disposed at the water inlet of the cooling pipeline L; the control module is connected with the booster pump 340, and the control module is also used for controlling the booster pump 340. Illustratively, the control module is connected to the booster pumps 340 via the control unit 410 to control the booster pumps 340 according to the current operating state of the air-bed drag reduction system 100. By controlling the operation of the booster pump 340, the cooling water with sufficient pressure and flow rate can be provided for the cooling pipeline L, and the cooling water in the cooling pipeline L can be adjusted to achieve the effect of energy saving.
Fig. 2 is a schematic structural diagram of another gas supply system suitable for a very large gas layer drag reduction ship according to an embodiment of the present invention. With reference to fig. 1 and 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 further configured to control the airflow rate of the axial flow fan 111 and control the air compressor 121 through the first control device 220. Illustratively, the control module is connected to the axial flow fan 111 and the first control device 220 through the control unit 410 to control the airflow rate of the axial flow fan 111 and control the air compressor 121 through the first control device 220 according to the current working state of the air layer drag reduction system 100. The air compressor 121 may be a low-pressure air compressor.
With reference to fig. 1 and 2, optionally, an air intake pipeline (not shown) of the air compressor 121 is a bent pipeline, the air compressor 121 is of a closed structure, a sound insulation structure is disposed inside the air compressor 121, and a vibration reduction structure is disposed at the bottom of the air compressor 121. For example, the length of the intake pipe of the air compressor 121 may be adjusted and the path of the intake pipe may be set such that the intake pipe is a bent pipe to reduce air noise generated by the gas at the intake pipe of the air compressor 121. The air compressor 121 may include a closed tank to form a closed structure. The soundproof structure may be soundproof cotton, and the soundproof cotton may be provided inside the case of the air compressor 121 and at a seam between the case and the case to reduce mechanical noise generated from the air compressor 121. The vibration reduction structure at the bottom of the air compressor 121 may be a vibration isolator to reduce vibration and noise when the air compressor 121 is operated as a whole. Optionally, soundproof cotton designed according to the noise signal characteristics of the air supply equipment can be additionally arranged on the inner wall of the ship cabin 10 so as to reduce noise transmission. The first pipe 140 may be further coated with a sound-proof structure to reduce aerodynamic noise of the pipe. The technical scheme of the embodiment of the invention integrates various vibration reduction and noise reduction measures, is favorable for reducing the noise of the cabin where the air supply system is positioned, and meets the requirement of the comfort level of the classification society.
In conjunction with fig. 1 and 2, optionally, the power generation device 210 includes a generator 211 and a soft start cabinet (not specifically shown), which can be used to adjust for disturbances to the power grid caused by the air compressor starting. In this embodiment, the first control device 220 is schematically illustrated as a frequency conversion cabinet 221, in practical applications, the first control device 220 may be implemented in various ways, for example, the first control device 220 may also be a soft start cabinet or a centralized control cabinet, and the present embodiment does not limit this.
Optionally, the power supply module further comprises a harmonic processor 230, the harmonic processor 230 is connected to the generator 211 and the frequency conversion cabinet 221, and the harmonic processor 230 is configured to neutralize the harmonic generated by the frequency conversion cabinet 221. Illustratively, the control module may adjust the flow and pressure of each air compressor 121 via the inverter cabinet 221 to reduce energy consumption based on the current operating state of the air layer drag reduction system 100. The harmonic processor 230 helps to reduce the influence of the frequency conversion cabinet 221 on the air compressor 121 and the whole ship power grid by neutralizing the harmonic generated by the frequency conversion cabinet 221.
With reference to fig. 1 and 2, optionally, 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 is further configured to control the first cooler 311, the second cooler 321, and the third cooler 331. For example, the control module may 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 inverter cabinet 221 through the third cooler 331.
The operation principle of the air supply system will be described below with reference to fig. 2 as an example. Referring to fig. 2, on 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 compartment 10, and controls the axial flow fan 111 to supply air at a small displacement, so as to save energy consumption and maintain air circulation inside the ship compartment 10. At the same time, the first, second, and third regulating valves 420, 430, and 440 are controlled to close. At a first preset time before the gas layer drag reduction system 100 is turned on, for example, 5 minutes before the gas 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 opened, so that the cooling water flows in the cooling pipeline L. When the gas layer drag reduction system 110 is started, the control unit 410 controls the air compressor 121 to be started, the air compressor 121 is used for pressurizing air sucked by the air compressor 121, and the pressurized air is sequentially provided to the gas layer drag reduction system 100 through the air outlet, the first pipeline 140, the air bottle 131 and the second pipeline 150 of the air compressor, so that air supply for the gas layer drag reduction system 100 is realized. When the gas layer drag reduction system 100 works, the control unit 410 monitors the working conditions of various devices in the gas supply module, the power supply module and the cooling module, and controls the various devices in real time according to the working conditions of the 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 stably operated, at this time, the control unit 410 may automatically determine in real time according to the operating states of the ship and the air layer drag reduction system 100, so as to control the turning-on number of the air compressors 121, the air flow rate of the axial flow fan 111, and the operating state of the booster pump 340 according to the air flow rate provided to the air layer drag reduction system 100, for example, turn off at least part of the air compressors 121, only maintain the operating state of the small air compressors 121, and adjust the air flow rate of the axial flow fan 111, so as to reduce the air flow rate in the ship cabin 10. Meanwhile, the opening degrees of the first, second, and third regulating valves 420, 430, and 440 are controlled to reduce the flow rate of water in the cooling line L. When the air layer drag reduction system 110 is turned off, the air compressor 121 is controlled to be turned off by the control unit 410, and the booster 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 after the air layer drag reduction system 110 is turned off for a third preset time, for example, after 5 minutes from the turning off of the air layer drag reduction system 100.
The embodiment of the invention also provides an air supply method suitable for the ultra-large air layer drag reduction ship, which is used for controlling the air supply system suitable for the ultra-large air layer drag reduction ship provided by any embodiment of the invention. Fig. 3 is a schematic flow chart of an air supply method suitable for an ultra-large air-layer drag reduction ship according to an embodiment of the present invention. Referring to fig. 3, the gas supply method specifically includes the steps of:
s110, acquiring working state information of the gas layer drag reduction system through a control module.
And S120, controlling the gas supply module, the cooling module and the power supply module through the control module according to the working state of the gas layer resistance reduction system.
The gas supply method suitable for the ultra-large gas layer drag reduction ship comprises a gas supply module, a power supply module, a cooling module and a control module. The control module can control a first air supply device in the air supply module to provide fresh air for the ship cabin according to the working state of the air layer resistance reduction system, and control a second air supply device to suck air in the ship cabin for pressurization, so that air supply for the air layer resistance reduction system is realized. Meanwhile, the control module can also adjust the air flow of the first air supply device according to the working state of the air layer resistance reduction system, and controls the opening number of the second air supply devices and the flow of the opened air supply devices through the first control device in the power supply module so as to reduce the power consumption. And 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 resistance reduction system, so that the corresponding equipment and the cabin are cooled. According to the technical scheme of the embodiment of the invention, the air supply of the air layer resistance reduction system can be realized, and the heat dissipation of the air supply system can be realized, so that the influence on the work of the air supply system caused by the temperature rise of the propagation cabin and the internal devices can be avoided, and the electric energy consumed by the air supply system can be saved.
On the basis of the foregoing embodiment, optionally, step S120 specifically includes:
before the gas layer resistance reducing system is started, the axial flow fan is controlled by the control unit to supply gas to the ship cabin, the gas flow of the axial flow fan is controlled at a first preset time before the gas layer resistance reducing system is started, and 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 are controlled to be started;
when the gas layer resistance reducing system is started, the control unit controls the air compressors to be started, and after the gas layer resistance reducing system is started for a second preset time, the number of the started air compressors, the air flow of the air compressors in the starting state, the air flow 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 gas layer resistance reducing system;
when the gas layer resistance reducing system is closed, the control unit controls the air compressor to be closed, and after the gas layer resistance reducing system is closed for a third preset time, the booster pump, the first regulating valve, the second regulating valve, the third regulating valve, the generator and the soft start cabinet are controlled to be closed.
The technical scheme of the embodiment of the invention is suitable for controlling the gas supply system which is suitable for the ultra-large gas layer drag reduction ship and is shown in fig. 2, and the specific technical principle and the generated technical effect can be understood by referring to the embodiment, which is not described again.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An air supply system suitable for an ultra-large gas layer drag reduction ship, comprising: the device comprises an air supply module, a power supply module, a cooling module and a control module;
the gas supply module is arranged in the cabin of the ship and comprises a first gas supply device, a second gas supply device and a gas storage device; the first air supply device is used for supplying air to the ship cabin; the gas storage device is connected with at least one first pipeline, one end of the first pipeline is connected with the gas outlet of the second gas supply device, the other end of the first pipeline is connected with the gas inlet of the gas storage device, and the gas outlet of the gas storage device is connected with a gas layer resistance reduction system through a second pipeline;
the power supply module comprises a power generation device and a first control device; the power generation device is used for supplying power to the gas supply system suitable for the ultra-large type gas layer drag reduction ship and the gas layer drag reduction system; the first control device is connected with the second air supply device and is used for controlling the second air supply device;
the cooling module comprises a cooling pipeline, and a first cooling device, a second cooling device and a third cooling device which are connected in the cooling pipeline; the first cooling device is in heat exchange connection with the second air supply device, the second cooling device is in heat exchange connection with the first pipeline, and the third cooling device is in heat exchange connection with the first control device;
the control module is connected with the gas supply module, the power supply module and the cooling module and used for controlling the gas supply module, the cooling module and the power supply module.
2. The gas supply system suitable for the ultra-large gas-layer drag reducing ship of claim 1, wherein the control module comprises a control unit, a first regulating valve, a second regulating valve and a third regulating valve;
the first regulating valve is connected between a water inlet of the first cooling device and the cooling line, the second regulating valve is connected between a water inlet of the second cooling device and the cooling line, and the third regulating valve is connected between a water inlet of the third cooling device and the cooling line;
the control unit is connected with the first regulating valve, the second regulating valve and the third regulating valve and used for controlling the opening degrees of the first regulating valve, the second regulating valve and the third regulating valve.
3. The air supply system suitable for very large gas layer drag reducing ships according to claim 1, characterized in that the first air supply device comprises an axial flow fan, the second air supply device comprises an air compressor, and the air storage device comprises an air bottle;
the control module is connected with the axial flow fan and the first control device, and is also used for controlling the air flow of the axial flow fan and controlling the air compressor through the first control device.
4. The air supply system suitable for the ultra-large type air layer drag reduction ship of claim 3, wherein the air inlet pipeline of the air compressor is a bent pipeline, the air compressor is of a closed structure, a sound insulation structure is arranged inside the air compressor, and a vibration damping structure is arranged at the bottom of the air compressor.
5. The air supply system for a very large air-borne drag reducing vessel as claimed in claim 1, wherein the first cooling means comprises a first cooler, the second cooling means comprises a second cooler, and the third cooling means comprises a third cooler;
the control module is connected with the first cooler, the second cooler and the third cooler, and is further used for controlling the first cooler, the second cooler and the third cooler.
6. The gas supply system for the ultra-large gas-layer drag reducing ship as claimed in claim 1, wherein the cooling module further comprises a booster pump, the booster pump is disposed at the water inlet of the cooling pipeline;
the control module is connected with the booster pump, and the control module is also used for controlling the booster pump.
7. The gas supply system suitable for the ultra-large gas layer drag reduction ship of claim 1, wherein the power generation device comprises a generator and a soft start cabinet, the first control device comprises a frequency conversion cabinet, the power supply module further comprises a harmonic processor, and the harmonic processor is connected with the generator and the frequency conversion cabinet.
8. The gas supply system for the very large gas-layer drag reducing ship as claimed in claim 1, wherein the first pipeline is externally wrapped with a sound insulation structure.
9. An air supply method suitable for a very large air-layer drag reduction ship, which is used for controlling an air supply system suitable for the very large air-layer drag reduction ship according to any one of claims 1 to 8, and comprises the following steps:
and the control module controls the gas supply module, the cooling module and the power supply module according to the working state of the gas layer drag reduction system.
10. The gas supply method for the ultra-large gas layer drag reducing ship according to claim 9, wherein the control module comprises a control unit, a first regulating valve, a second regulating valve and a third regulating valve; the first air supply device comprises an axial flow fan; the second air supply device comprises an air compressor; the cooling module further comprises a booster pump; the first cooling device comprises a first cooler, the second cooling device comprises a second cooler, and the third cooling device comprises a third cooler; the power generation device comprises a generator and a soft start cabinet, and the first control device comprises a frequency conversion cabinet;
through the control module is according to the operating condition of gas layer drag reduction system, right the gas supply module, the cooling module with power module controls includes:
before the air layer drag reduction system is started, the control unit controls the axial flow fan to supply air to a ship cabin, controls the air flow of the axial flow fan at a first preset time before the air layer drag reduction system is started, 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 started;
when the gas layer drag reduction system is started, the control unit controls the air compressors to be started, and controls the starting number of the air compressors, the gas flow of the air compressors in the starting state, the gas flow 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 according to the working states of a ship and the gas layer drag reduction system after the gas layer drag reduction system is started for a second preset time;
when the gas layer drag reduction system is closed, the control unit controls the air compressor to be closed, and after the gas layer drag reduction system is closed for a third preset time, the booster pump, the first regulating valve, the second regulating valve, the third regulating valve, the generator and the soft start cabinet are controlled to be closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210110798.XA CN114228899A (en) | 2022-01-29 | 2022-01-29 | Gas supply system and method suitable for ultra-large gas layer resistance reduction ship |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210110798.XA CN114228899A (en) | 2022-01-29 | 2022-01-29 | Gas supply system and method suitable for ultra-large gas layer resistance reduction ship |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889742A (en) * | 2022-05-09 | 2022-08-12 | 江苏科技大学 | Marine damping device that ventilates |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889742A (en) * | 2022-05-09 | 2022-08-12 | 江苏科技大学 | Marine damping device that ventilates |
| CN114889742B (en) * | 2022-05-09 | 2023-03-14 | 江苏科技大学 | Marine damping device that ventilates |
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Address after: Room 312, 313, 189 Kaohsiung Road, Huangpu District, Shanghai 200011 Applicant after: China Shipbuilding (Shanghai) Energy Conservation Technology Co.,Ltd. Address before: Room 312, 313, 189 Kaohsiung Road, Huangpu District, Shanghai 200011 Applicant before: CSIC (SHANGHAI) ENERGY SAVING TECHNOLOGY DEVELOPMENT CO.,LTD. |