Automatic blowdown device for drainage bucket of ship seawater centralized cooling system and ship

Abstract

The invention relates to the technical field of ship sea cooling systems, and provides a ship seawater centralized cooling system drainage bucket automatic blowing device and a ship wherein the ship seawater centralized cooling system drainage bucket automatic blowing device comprises a drainage bucket, a blowing mechanism, a power supply and a switch control assembly; the drainage bucket is provided with a drainage channel communicated with seawater and the seawater centralized cooling system; the blowing mechanism is arranged corresponding to the drainage channel, and the blowing mechanism is used for blowing high-pressure airflow into the drainage channel; the power supply is electrically connected with the blowing mechanism; the switch control assembly is connected between the power supply and the purging mechanism and used for controlling connection and disconnection between the power supply and the purging mechanism according to the navigational speed of a ship or the flow speed of seawater in the drainage channel. Timing, efficient and automatic cleaning of the drainage bucket is achieved, and the long-term operation reliability of the sea cooling system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ship sea-water cooling systems, and particularly to an automatic blowing device for a drainage bucket of a ship sea-water centralized cooling system and a ship. Background Art

[0002] The ship sea-water cooling system is a key system in ship engineering for cooling heat sources such as generator sets and electromechanical equipment. Its main function is to timely remove the heat generated during equipment operation by circulating sea water or other cooling media, ensuring that the equipment operates efficiently within the normal temperature range and avoiding performance degradation or damage caused by overheating.

[0003] In order to reduce the power consumption of the sea-water pump source for delivering cooling water in the sea-water heat exchanger, large ships generally adopt the centralized gravity cooling technology. Under certain ship speed conditions, sea water can be self-flowed into the sea-water centralized heat exchanger by means of a "bucket" arranged on the ship side, so as to achieve self-flow cooling without the drive of a sea-water pump and improve the economic efficiency of the ship system operation. It should be noted that a standby sea-water pump is usually configured in the centralized gravity cooling system. Under medium and low-speed self-flow working conditions, the sea-water pump is rotated by the action of water flow and serves as a resistance component; while under high-speed working conditions, when the water supply capacity of the "bucket" is insufficient, the cooling water supply can be increased and the cooling load export capacity can be increased by operating the sea-water pump.

[0004] On the other hand, in the above-mentioned centralized self-flow sea-water cooling system, due to the highly concentrated export channels of the cooling load, once dirt blockage occurs, it will seriously affect the normal cooling of the heat-generating equipment. Therefore, extremely high requirements are imposed on the smoothness of the channels. Among them, the attachment of marine organisms is a key factor affecting the heat exchange performance of the sea-water centralized heat exchanger. During the operation of the ship in sea water, various free microorganisms, animals and plants will be attracted to attach and grow on the functional surface of the sea-water heat exchanger. In the long run, a marine organism attachment layer will eventually be formed. Especially under the condition of relatively low sea water in the system during the low-speed navigation (or berthing) of the ship, marine organisms are extremely likely to attach to the inlet of the drainage bucket and grow extremely fast, which is extremely likely to block the sea-water inlet and seriously affect the normal operation of the heat exchanger.

[0005] In order to slow down the attachment and growth of marine organisms, various solutions such as electrolyzing sea water, releasing chemical agents and antifouling coatings have emerged one after another. However, they generally have various problems such as low efficiency, large consumption and poor sustainability, and it is difficult to meet the requirements of the efficient and reliable operation of the centralized self-flow sea-water cooling system, especially the requirements for preventing fouling and blockage of the drainage bucket under long-term low-speed or berthing conditions. Summary of the Invention

[0006] The present invention provides an automatic blowing device for a drainage bucket of a ship seawater centralized cooling system and a ship, which are used to solve the defect that in the condition of low seawater temperature in the system during the low-speed navigation (or berthing) of the ship in the prior art, marine organisms are extremely likely to adhere to the surface of the heat exchange tubes and grow extremely fast, seriously affecting the normal operation of the heat exchanger. The invention realizes the regular and efficient automatic cleaning of the drainage bucket and improves the long-term operation reliability of the sea-cooling system.

[0007] The present invention provides an automatic blowing device for a drainage bucket of a ship seawater centralized cooling system, including: A drainage bucket, which has a drainage channel communicating with seawater and a ship seawater centralized cooling system; A purging mechanism, which is arranged corresponding to the drainage channel and is used to blow high-pressure air into the drainage channel; A power supply, which is electrically connected to the purging mechanism; A switch control component, which is connected between the power supply and the purging mechanism and is used to control the on-off between the power supply and the purging mechanism according to the ship's speed or the flow rate of seawater in the drainage channel.

[0008] According to the automatic blowing device for a drainage bucket of a ship seawater centralized cooling system provided by the present invention, the purging mechanism includes a high-pressure air source, an electromagnetic valve and a blowing head. The high-pressure air source is connected to the blowing head through an air path. The blowing head is arranged in the drainage channel. The high-pressure air source is used to provide high-pressure air to the blowing head. The electromagnetic valve is connected to the air path between the high-pressure air source and the blowing head to control the on-off of the air path; the electromagnetic valve is connected in series between the switch control component and the power supply.

[0009] According to the automatic blowing device for a drainage bucket of a ship seawater centralized cooling system provided by the present invention, an inlet grille is arranged at the inlet of the drainage channel. A plurality of air outlets are arranged on the blowing head, and the plurality of air outlets are arranged towards the inlet grille. The air outlets are arranged in a dendritic fractal manner, which not only reduces the blocking effect on the drainage channel and improves the drainage capacity of the drainage bucket, but also enables the high-pressure air to be as evenly dispersed as possible to each grille to achieve uniform blowing.

[0010] According to an automatic blowing device for a drainage bucket of a ship seawater centralized cooling system provided by the present invention, the switch control assembly includes a nano-friction generator, an electromagnetic device and a normally closed switch. The normally closed switch is connected in series between the power supply and the solenoid valve. The normally closed switch cooperates with the electromagnetic device to control the on-off of the circuit between the power supply and the solenoid valve. The electromagnetic device is electrically connected to the nano-friction generator. The nano-friction generator is used to generate electricity according to the scouring frequency of seawater and supply power to the electromagnetic device, so as to control the on-off of the circuit between the power supply and the solenoid valve according to the ship speed, and further control the on-off of the gas path between the high-pressure gas source and the blowing head.

[0011] According to an automatic blowing device for a drainage bucket of a ship seawater centralized cooling system provided by the present invention, the nano-friction generator is arranged in the drainage channel and is perpendicular to the seawater flow direction of the drainage channel.

[0012] According to an automatic blowing device for a drainage bucket of a ship seawater centralized cooling system provided by the present invention, the automatic blowing device for the drainage bucket of the ship seawater centralized cooling system further includes a time control switch. The time control switch is connected in series between the power supply and the solenoid valve, and the time control switch opens and closes according to a preset interval time.

[0013] According to an automatic blowing device for a drainage bucket of a ship seawater centralized cooling system provided by the present invention, the relationship between the running time DT1 and the interval time DT2 of the purging mechanism and the marine organism attachment period is: T1<DT2<T2<DT1<T3 Wherein, from 0 to T1, organic molecules in seawater form an organic film, providing nutrients for the attachment of marine organisms; From T1 to T2, bacteria and small animals and plants adhere to the organic film to form a microbial film; From T2 to T3, dormant bodies of prokaryotes, animal larvae and seaweeds begin to grow on the surface of the microbial film to form a biological community; After T3, large fouling organisms grow rapidly.

[0014] The present invention also provides a ship, including a ship's side and a ship seawater centralized cooling system. The ship seawater centralized cooling system includes: A seawater cooling subsystem for introducing seawater. The seawater cooling subsystem includes the automatic blowing device for the drainage bucket of the ship seawater centralized cooling system described in any one of the above; An internal circulation cooling water subsystem with an internal circulation cooling medium introduced therein. The internal circulation cooling water subsystem is used for heat exchange with the heat source of the ship. A seawater centralized heat exchanger, the seawater centralized heat exchanger having a seawater channel and an internal circulation cooling medium channel, the seawater channel communicating with the seawater cooling subsystem, the internal circulation cooling medium channel communicating with the internal circulation cooling water subsystem, the seawater centralized heat exchanger being used for heat exchange between the seawater cooling subsystem and the internal circulation cooling water subsystem.

[0015] According to a ship provided by the present invention, the seawater cooling subsystem further includes a seawater discharge pipeline, the drainage bucket communicating with the inlet of the seawater channel, the seawater discharge pipeline communicating with the outlet of the seawater channel.

[0016] According to a ship provided by the present invention, the internal circulation cooling water subsystem includes an internal circulation cooling water inlet pipeline, a fresh water pump, a heat source heat exchanger, and an internal circulation cooling water outlet pipeline. The internal circulation cooling water inlet pipeline communicates with the outlet of the internal circulation cooling medium channel, the internal circulation cooling water outlet pipeline communicates with the inlet of the internal circulation cooling medium channel, the heat source heat exchanger communicates with the internal circulation cooling water inlet pipeline and the internal circulation cooling water outlet pipeline respectively, and the fresh water pump is connected to the internal circulation cooling water inlet pipeline.

[0017] The automatic blowing and removing device for the drainage bucket of the ship seawater centralized cooling system provided by the present invention sets the purging mechanism corresponding to the drainage channel of the drainage bucket, and purges the area where marine organisms are likely to adhere in the drainage channel through high-pressure air flow, which can effectively peel off the marine organisms and dirt adhering to the inner wall surface of the drainage channel; and the purging mechanism can automatically control the working state of the purging mechanism according to the change of seawater flow rate. Under low-speed or berthing conditions, the purging mechanism is automatically started for cleaning; at high sailing speeds, the purging mechanism is automatically closed to avoid unnecessary gas consumption. Thus, the timed and highly efficient automatic cleaning of the drainage bucket is realized, and the long-term operation reliability of the sea-cooling system is improved. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the composition of the centralized self-circulating sea-cooling system provided by the present invention.

[0020] Figure 2 It is a schematic diagram of the composition principle of the automatic blowing and removing device for the drainage bucket of the ship seawater centralized cooling system provided by the present invention.

[0021] Figure 3Schematic diagram of the arrangement of the drainage bucket and the blowing head provided by the present invention Figure 1 。

[0022] Figure 4 Schematic diagram of the arrangement of the drainage bucket and the blowing head provided by the present invention Figure 2 。

[0023] Figure 5 Schematic diagram of the attachment law of marine organisms provided by the present invention.

[0024] Figure 6 Schematic diagram of the opening and closing cycle of the time control switch provided by the present invention.

[0025] Reference numerals: 10. Drainage bucket; 11. Drainage channel; 12. Inlet grille; 20. Seawater central heat exchanger; 30. Seawater discharge pipe; 40. Inner circulation cooling water inlet pipe; 50. Fresh water pump; 60. Heat source heat exchanger; 70. Inner circulation cooling water outlet pipe; 80. Nanogenerator; 90. Blowing head; 91. Air outlet; 100. High-pressure gas source; 110. Solenoid valve; 120. Power supply; 130. Time control switch; 140. Normally closed switch; 150. Electromagnetic device. Detailed implementation manners

[0026] The following further describes in detail the implementation manners of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0029] In the embodiments of the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0030] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0031] The following combines Figures 1 to 6 , and through specific embodiments and their application scenarios, the automatic blowing device for the drainage bucket of the ship seawater centralized cooling system and the ship provided by the embodiments of the present invention are described in detail.

[0032] In the embodiments of the present invention, as Figure 1 and Figure 2 shown, the automatic blowing device for the drainage bucket 10 of the ship seawater centralized cooling system includes a drainage bucket 10, a purging mechanism, a power supply 120, and a switch control assembly. The drainage bucket 10 has a drainage channel 11 communicating with seawater and the ship seawater centralized cooling system; the purging mechanism is arranged corresponding to the drainage channel 11, and the purging mechanism is used to blow high-pressure air into the drainage channel 11; the power supply 120 is electrically connected to the purging mechanism; the switch control assembly is connected between the power supply 120 and the purging mechanism, and the switch control assembly is used to control the on and off between the power supply 120 and the purging mechanism according to the ship's speed or the flow rate of seawater in the drainage channel 11.

[0033] The drainage bucket 10 has a drainage channel 11 communicating with seawater and the ship seawater centralized cooling system. The main function of the drainage bucket 10 is to introduce seawater into the ship seawater centralized cooling system and provide a cooling medium for the cooling system. Through the drainage channel 11, the seawater is centrally guided to the ship seawater centralized heat exchanger 20 to achieve the cooling of heat sources such as ship generator sets and electromechanical equipment.

[0034] The drainage channel 11 is a key channel for seawater to enter the cooling system, and its smoothness directly affects the normal operation of the cooling system.

[0035] The purging mechanism is arranged corresponding to the drainage channel 11 and is used to blow high-pressure air into the drainage channel 11. By purging the inner wall of the drainage channel 11 with high-pressure air, the purging mechanism can effectively peel off the marine organisms and dirt attached to the inner wall, preventing their accumulation and growth. According to the set control logic, the purging mechanism automatically starts under specific working conditions (such as low speed or berthing) to achieve timed cleaning and ensure the smoothness of the drainage channel 11. The high-pressure air has a strong impact force and can quickly and efficiently remove the attachments, improving the cleaning effect.

[0036] The power supply 120 is electrically connected to the purging mechanism to control the operation of the purging mechanism. By cooperating with the switch control component, the power supply 120 can cut off the power when purging is not required, reducing unnecessary gas consumption.

[0037] The switch control component is connected between the power supply 120 and the purging mechanism and is used to control the on-off between the power supply 120 and the purging mechanism according to the ship's speed or the flow rate of seawater in the drainage channel 11. The switch control component can automatically control the working state of the purging mechanism according to the ship's speed or the flow rate of seawater in the drainage channel 11. Under low-speed or berthing working conditions, the purging mechanism is automatically started; at high ship speeds, the purging mechanism is automatically closed, realizing intelligent control. Through automatic control, unnecessary purging at high ship speeds is avoided, reducing gas consumption and equipment wear and improving the economy of the system. The switch control component can set the operation time and interval of the purging mechanism according to the law of the attachment and growth cycle of marine organisms to achieve intermittent purging control, further optimizing the cleaning effect and energy-saving effect.

[0038] In this application, by arranging the purging mechanism corresponding to the drainage channel 11 of the drainage bucket 10 and purging the areas where marine organisms are likely to attach in the drainage channel 11 with high-pressure air, the marine organisms and dirt attached to the inner wall surface of the drainage channel 11 can be effectively peeled off; and the purging mechanism can automatically control the working state of the purging mechanism according to the change of the seawater flow rate. Under low-speed or berthing working conditions, the purging mechanism is automatically started for cleaning; at high ship speeds, the purging mechanism is automatically closed to avoid unnecessary gas consumption. Thus, timed and efficient automatic cleaning of the drainage bucket 10 is achieved, improving the long-term operation reliability of the sea-cooling system.

[0039] Refer to Figure 2, An automatic purging device for a drainage bucket 10 of a ship seawater centralized cooling system provided according to the present invention. The purging mechanism includes a high-pressure air source 100, a solenoid valve 110, and a purging head 90. The high-pressure air source 100 is connected to the purging head 90 through an air path. The purging head 90 is arranged in the drainage channel 11. The high-pressure air source 100 is used to provide high-pressure air to the purging head 90. The solenoid valve 110 is connected to the air path between the high-pressure air source 100 and the purging head 90 to control the on-off of the air path; the solenoid valve 110 is connected in series between the switch control component and the power supply 120.

[0040] It can be understood that the high-pressure air source 100 is the power source of the purging mechanism, which provides high-pressure air for the purging head 90. The high-pressure air is the medium for cleaning the marine organisms and dirt on the inner wall of the drainage channel 11. The high-pressure air source 100 is connected to the purging head 90 through an air path to ensure that the high-pressure air can be transported to the inside of the drainage channel 11. Its pressure needs to be designed according to the actual requirements and the structure of the drainage channel 11 to ensure that the attached marine organisms and dirt can be effectively stripped.

[0041] The solenoid valve 110 is connected to the air path between the high-pressure air source 100 and the purging head 90 and is used to control the on-off of the high-pressure air. When the solenoid valve 110 receives an opening signal, the air path is conducted, and the high-pressure air flows from the high-pressure air source 100 to the purging head 90; when the solenoid valve 110 receives a closing signal, the air path is disconnected, and the high-pressure air stops flowing. The switching action of the solenoid valve 110 is controlled by the switch control component, thereby realizing precise control of the purging mechanism.

[0042] The purging head 90 is the part in the purging mechanism that directly contacts the inner wall of the drainage channel 11. Its function is to guide the high-pressure air to the area that needs to be cleaned and use the impact force of the high-pressure air to strip the attached marine organisms and dirt. The purging head 90 is arranged in the drainage channel 11, and its design needs to consider the shape, size of the drainage channel 11, and the characteristics of marine organism attachment. The shape, material, and nozzle of the purging head 90 can be optimized according to needs to ensure that the high-pressure air can effectively cover the area that needs to be cleaned and generate sufficient impact force to strip the attached marine organisms and dirt.

[0043] The solenoid valve 110 is connected in series between the switch control component and the power supply 120. That is, the switch control component controls the on-off of the solenoid valve 110, and the solenoid valve 110 in turn controls the on-off of the high-pressure air source 100. Specifically, the switch control component determines whether to activate the purging mechanism according to preset conditions (such as the ship's speed or the flow rate of seawater in the drainage channel 11). If needed, it sends an opening signal (energizes) to the solenoid valve 110, and the solenoid valve 110 conducts, and the high-pressure air source 100 supplies high-pressure air to the blowing head 90; if not, it sends a closing signal (cuts off power) to the solenoid valve 110, the solenoid valve 110 disconnects, and the high-pressure air source 100 stops supplying air to the blowing head 90. This series connection realizes the automatic control of the purging mechanism, avoids the trouble of manual operation, and can adjust the cleaning frequency according to the actual situation, saving energy.

[0044] Referring to Figure 3 and Figure 4 , for an automatic blowing device for the drainage bucket 10 of a ship's seawater centralized cooling system provided by the present invention, an inlet grille 12 is provided at the inlet of the drainage channel 11, and a plurality of air outlets 91 are provided on the blowing head 90, and the plurality of air outlets 91 are arranged facing the inlet grille 12. The air outlets 91 are arranged in a dendritic fractal pattern, which not only reduces the blocking effect on the drainage channel 11 and improves the drainage capacity of the drainage bucket, but also enables the high-pressure air to be as evenly dispersed as possible to each grille to achieve uniform blowing.

[0045] It can be understood that the plurality of air outlets 91 are arranged facing the inlet grille 12, which can concentrate the high-pressure air flow on the area of the inlet grille 12. Since the inlet grille 12 is a high-risk area where marine organisms are likely to adhere, this design can ensure efficient cleaning of the inlet grille 12 and prevent marine organisms from adhering and growing on the grille.

[0046] Referring to Figure 1 and Figure 2 , for an automatic blowing device for the drainage bucket 10 of a ship's seawater centralized cooling system provided by the present invention, the switch control component includes a nanogenerator 80, an electromagnetic device 150 and a normally closed switch 140. The normally closed switch 140 is connected in series between the power supply 120 and the solenoid valve 110. The normally closed switch 140 cooperates with the electromagnetic device 150 to control the on-off of the circuit between the power supply 120 and the solenoid valve 110. The electromagnetic device 150 is electrically connected to the nanogenerator 80. The nanogenerator 80 is used to generate electricity according to the scouring frequency of seawater and supply power to the electromagnetic device 150 to realize the on-off control of the circuit between the power supply 120 and the solenoid valve 110 according to the ship's speed, and further control the on-off of the gas path between the high-pressure air source 100 and the blowing head 90.

[0047] It can be understood that the nano triboelectric generator 80 is installed at a position sensitive to the seawater flow rate (preferably in the seawater channel of the drainage bucket 10), which can sensitively capture and sense the change of the seawater flow rate and generate electricity according to the seawater scouring speed. When the ship is running at a high speed, the seawater flow rate is high, and the nano triboelectric generator 80 generates sufficient electric energy; while in the low-speed or mooring conditions, the seawater flow rate is low, and the electric energy generated by the nano triboelectric generator 80 decreases. The electric energy generated by the nano triboelectric generator 80 is directly supplied to the electromagnetic device 150 as a control signal source. In this way, the nano triboelectric generator 80 can automatically control the working state of the purging mechanism according to the ship's speed. The nano triboelectric generator 80 starts the purging mechanism only when needed (low-speed or mooring conditions), avoiding unnecessary gas consumption and improving the economy of the system.

[0048] The electromagnetic device 150 is connected in series with the normally closed switch 140 between the power supply 120 and the solenoid valve 110 to control the on-off of the circuit. When the nano triboelectric generator 80 generates sufficient electric energy, the electromagnetic device 150 is magnetized, attracting the ferromagnetic flap of the normally closed switch 140 to disconnect the circuit; when the nano triboelectric generator 80 cannot generate sufficient electric energy, the electromagnetic device 150 demagnetizes, and the normally closed switch 140 closes to connect the circuit. The electromagnetic device 150 automatically controls the start and stop of the purging mechanism according to the electric energy output of the nano triboelectric generator 80, realizing the automatic anti-fouling function based on the ship's speed.

[0049] The normally closed switch 140 is connected in series with the electromagnetic device 150 to control the on-off of the circuit between the power supply 120 and the purging mechanism. Under normal circumstances, the normally closed switch 140 is in the closed state to ensure the connectivity of the circuit. The ferromagnetic flap of the normally closed switch 140 acts under the control of the electromagnetic device 150 to realize the automatic on-off of the circuit. When the electromagnetic device 150 is magnetized, the normally closed switch 140 disconnects; when the electromagnetic device 150 demagnetizes, the normally closed switch 140 closes.

[0050] In this way, the nano triboelectric generator 8 weighs the change of the seawater flow rate to generate electric energy, and the electromagnetic device 150 controls the on-off of the normally closed switch 140 according to the presence or absence of electric energy, thereby realizing the automatic start and stop of the purging mechanism. In the low-speed or mooring conditions, the purging mechanism automatically starts for cleaning; at high ship speeds, the purging mechanism automatically closes to avoid unnecessary gas consumption.

[0051] Refer to Figure 1 , according to an automatic blowing device for the drainage bucket 10 of a ship seawater centralized cooling system provided by the present invention, the nano triboelectric generator 80 is arranged in the drainage channel 11 and is perpendicular to the seawater flow direction of the drainage channel 11.

[0052] It can be understood that since the nano-friction generator 80 is in direct contact with the flowing seawater, when the seawater flows through the channel, it can directly act on the blades or other force-bearing structures of the nano-friction generator 80. This arrangement can maximize the utilization of the kinetic energy of the seawater flow, enabling the nano-friction generator 80 to capture the scouring energy of the seawater more effectively, thereby improving the power generation efficiency.

[0053] Referring to Figure 2 , for an automatic purging device of the diversion bucket 10 of a ship seawater centralized cooling system provided by the present invention, the automatic purging device of the diversion bucket 10 of the ship seawater centralized cooling system further includes a time control switch 130, and the time control switch 130 is connected in series between the power supply 120 and the solenoid valve 110, and the time control switch 130 opens and closes according to a preset interval time.

[0054] It can be understood that there is a timer inside the time control switch 130, and the opening and closing time intervals can be set. When the preset opening time is reached, the time control switch 130 closes the circuit, connects the power supply, makes the solenoid valve 110 conduct, and the purging mechanism starts to work; when the preset closing time is reached, the time control switch 130 disconnects the circuit, cuts off the power supply, the solenoid valve 110 closes, and the purging mechanism stops working. According to marine biological research, the attachment and growth of marine organisms follow certain periodic laws. The time control switch 130 can set appropriate starting frequencies and durations according to these laws to effectively prevent the attachment and reproduction of marine organisms during critical time periods.

[0055] Specifically, when the ship is sailing at a low speed or even at anchor, the seawater flow rate entering the seawater channel of the diversion bucket 10 is low and the flow velocity is slow. Therefore, marine organisms may gradually attach and grow. At this time, since the nano-friction generator 80 is in a state of being scoured by low-flow seawater and cannot generate continuous electric energy to supply the electromagnetic device 150 to excite and form an electromagnetic force, the ferromagnetic dial of the normally closed switch 140 closes to form a connected circuit, and it has the condition of supplying power to the solenoid valve 110. With the timed opening and closing of the time control switch 130, the power supply 120 continuously supplies power to the solenoid valve 110 at intervals of DT2 time, and the power supply duration is DT1. Within the DT1 time range, the high-pressure air source is connected to the purging head 90, and high-pressure purging is carried out on the inlet grille 12 of the diversion bucket 10, completely blocking the attachment and growth conditions of marine organisms, ensuring that the diversion bucket 10 will not be blocked by marine organisms during long-term low-speed sailing or anchoring.

[0056] Referring to Figure 5 and Figure 6, for an automatic blowing device of a drainage bucket 10 in a ship seawater centralized cooling system provided by the present invention, the relationship between the operation time DT1 of the blowing mechanism and its interval time DT2 and the marine organism attachment cycle is: T1 < DT2 < T2 < DT1 < T3, where 0 - T1 is the formation of an organic film by organic molecules in seawater, providing nutrients for the attachment of marine organisms; T1 - T2 is the adhesion of bacteria and tiny animals and plants to the organic film to form a microbial film; T2 - T3 is the start of the growth of dormant bodies of prokaryotes, animal larvae, and seaweeds on the surface of the microbial film to form a biological community; after T3, large fouling organisms grow rapidly.

[0057] It can be understood that the closing and opening times DT1 and DT2 of the time control switch 130 are set according to the attachment conditions of marine organisms, biological population models, and the formation cycle law of microbial films. Specifically: According to the law of marine organism attachment: within the time of 0 - T1, organic molecules in seawater, such as free proteins, polysaccharides, and biological cell metabolites, form an organic film of a certain thickness, providing the necessary nutrient conditions for the attachment and survival of marine organisms; within the time of T1 - T2, bacteria and tiny animals and plants adhere to the conditional film through electrostatic force, van der Waals force, etc. under external environmental conditions to form a microbial film; the above times are relatively short, and the formed conditional film or microbial film is easily removed by blowing. Therefore, the operation interval time DT2 of the drainage bucket 10 automatic blowing device needs to be greater than T1 to save the consumption of high-pressure air, and at the same time less than T2 to achieve efficient cleaning; at the moment of T2 - T3, dormant bodies of prokaryotes, animal larvae, and seaweeds with resistance begin to grow on the surface of the biofilm to form a biological community; after the moment of T3, large fouling organisms grow rapidly, and it is difficult to remove them by gas blowing at this time. Therefore, to achieve broad-spectrum and efficient removal of conditional films, biofilms, and biological communities and avoid the growth of large fouling organisms, the operation time DT1 of the drainage bucket 10 automatic blowing device should be greater than T2, and in order to reduce the consumption of high-pressure air, the operation time DT1 needs to be controlled within T3. To sum up, the relationship between the operation time DT1 and the interval time DT2 of the device and the marine organism attachment cycle is: T1 < DT2 < T2 < DT1 < T3. [[ID=__5]]

[0058] Refer to Figure 1, the present invention also provides a ship, which includes a ship's side and a ship seawater centralized cooling system. The ship seawater centralized cooling system includes a seawater cooling subsystem, an internal circulation cooling water subsystem, and a seawater centralized heat exchanger 20. The seawater cooling subsystem is used to introduce seawater. The seawater cooling subsystem includes the above-mentioned automatic blowing device for the drainage bucket 10 of the ship seawater centralized cooling system; the internal circulation cooling water subsystem is filled with an internal circulation cooling medium, and the internal circulation cooling water subsystem is used to exchange heat with the heat source of the ship; the seawater centralized heat exchanger 20 has a seawater channel and an internal circulation cooling medium channel. The seawater channel is connected to the seawater cooling subsystem, and the internal circulation cooling medium channel is connected to the internal circulation cooling water subsystem. The seawater centralized heat exchanger 20 is used to exchange heat between the seawater cooling subsystem and the internal circulation cooling water subsystem.

[0059] It can be understood that the seawater cooling subsystem is used to introduce seawater as a cooling medium. Seawater enters the system through the drainage bucket 10 or other means, passes through the seawater channel of the seawater centralized heat exchanger 20, and takes away the heat in the heat exchanger, thereby realizing the cooling of the internal circulation cooling medium. The seawater cooling subsystem provides the necessary cooling capacity for the entire cooling cycle to ensure that the system can effectively reduce the temperature of the ship's heat source.

[0060] The internal circulation cooling water subsystem is filled with an internal circulation cooling medium (usually fresh water), and its main function is to exchange heat with the heat source of the ship. The internal circulation cooling water subsystem drives the cooling medium to circulate in the system through a fresh water pump 50, and transfers the heat generated by the ship's heat source (such as a generator set, mechanical and electrical equipment, etc.) to the seawater centralized heat exchanger 20. The internal circulation cooling medium exchanges heat with seawater in the seawater centralized heat exchanger 20, thereby realizing the export of heat and ensuring that the heat source equipment operates within the normal temperature range.

[0061] The main function of the seawater centralized heat exchanger 20 is to realize the heat exchange between the seawater cooling subsystem and the internal circulation cooling water subsystem.

[0062] The seawater channel is connected to the seawater cooling subsystem and is used to introduce and discharge seawater.

[0063] The internal circulation cooling medium channel is connected to the internal circulation cooling water subsystem and is used to introduce and discharge the internal circulation cooling medium.

[0064] Through these two channels, the seawater centralized heat exchanger 20 can efficiently transfer the heat in the internal circulation cooling medium to seawater, thereby realizing the cooling purpose.

[0065] Refer to Figure 1 , according to a ship provided by the present invention, the seawater cooling subsystem further includes a seawater discharge pipe 30. The drainage bucket 10 is connected to the inlet of the seawater channel, and the seawater discharge pipe 30 is connected to the outlet of the seawater channel.

[0066] As you can understand, the diversion bucket 10 is mounted on the side of the ship, and its primary function is to efficiently guide seawater into the seawater channel. This design utilizes the dynamics of the ship's currents, allowing the "bucket" structure to draw seawater into the system by gravity, reducing the need for additional pumping equipment.

[0067] The seawater discharge pipe 30 is connected to the outlet of the seawater channel. Its main function is to discharge the seawater after heat exchange. Through the rational design of the discharge pipe, the seawater can be discharged smoothly, avoiding the accumulation of seawater in the system, thus maintaining the normal operation of the system.

[0068] Reference Figure 1 According to a ship provided by the present invention, the internal circulation cooling water subsystem includes an internal circulation cooling water inlet pipe 40, a fresh water pump 50, a heat source heat exchanger 60 and an internal circulation cooling water outlet pipe 70. The internal circulation cooling water inlet pipe 40 is connected to the outlet of the internal circulation cooling medium channel, the internal circulation cooling water outlet pipe 70 is connected to the inlet of the internal circulation cooling medium channel, the heat source heat exchanger 60 is connected to the internal circulation cooling water inlet pipe 40 and the internal circulation cooling water outlet pipe 70 respectively, and the fresh water pump 50 is connected to the internal circulation cooling water inlet pipe 40.

[0069] It can be understood that a closed internal circulation cooling water loop is formed by connecting the internal circulation cooling water inlet pipe 40, the fresh water pump 50, the heat source heat exchanger 60 and the internal circulation cooling water outlet pipe 70.

[0070] The internal cooling water inlet pipe 40 transports the internal cooling medium (typically fresh water) from the outlet of the internal cooling medium channel to the heat source heat exchanger 60. This ensures that the cooling medium can smoothly enter the heat source heat exchanger 60 for heat exchange. By connecting with the internal cooling medium channel, the inlet pipe maintains the overall circulation of the internal cooling system, ensuring continuous flow of the cooling medium and achieving efficient heat removal.

[0071] The inner circulation cooling water outlet pipe 70 transports the cooling medium after heat exchange from the heat source heat exchanger 60 to the inlet of the inner circulation cooling medium channel, ensuring that the cooling medium can smoothly return to the seawater centralized heat exchanger 20 for the next round of cooling cycle.

[0072] The fresh water pump 50 provides power to circulate the cooling water in the loop. This continuous circulation ensures that the cooling water continuously flows through the heat source heat exchanger 60, removes the heat generated by the heat source, and maintains the normal operating temperature of the heat source.

[0073] The heat source heat exchanger 60 is a core component for heat exchange between the cooling water and the heat source. The cooling water absorbs the heat from the heat source in the heat source heat exchanger 60, reducing the temperature of the heat source and preventing the heat source from being damaged by overheating.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An automatic blowing device for a drainage bucket of a centralized seawater cooling system of a ship, characterized in that, Comprising: A drainage bucket, which has a drainage channel communicating with seawater and a seawater centralized cooling system; A purging mechanism, which is arranged corresponding to the drainage channel and is used to blow high-pressure air into the drainage channel; A power supply, which is electrically connected to the purging mechanism; A switch control component, which is connected between the power supply and the purging mechanism and is used to control the on-off between the power supply and the purging mechanism according to the ship's speed or the flow rate of seawater in the drainage channel.

2. The automatic blowing device for the drainage bucket of the ship seawater centralized cooling system according to claim 1, wherein The purging mechanism includes a high-pressure gas source, a solenoid valve and a blowing head. The high-pressure gas source is connected to the blowing head through a gas path. The blowing head is arranged in the drainage channel. The high-pressure gas source is used to provide high-pressure gas to the blowing head. The solenoid valve is connected to the gas path between the high-pressure gas source and the blowing head to control the on-off of the gas path; The solenoid valve is connected in series between the switch control component and the power supply.

3. The automatic blowing device for the drainage bucket of the ship seawater centralized cooling system according to claim 2, characterized in that, An inlet grille is provided at the inlet of the drainage channel. The blowing head is provided with a plurality of air outlets, and the plurality of air outlets are arranged towards the inlet grille, and the air outlets are arranged in a dendritic fractal pattern.

4. The automatic blowing device for the drainage bucket of the ship seawater centralized cooling system according to claim 2, wherein The switch control component includes a nanogenerator, an electromagnetic device and a normally closed switch. The normally closed switch is connected in series between the power supply and the solenoid valve. The normally closed switch cooperates with the electromagnetic device to control the on-off of the circuit between the power supply and the solenoid valve. The electromagnetic device is electrically connected to the nanogenerator. The nanogenerator is used to generate electricity according to the scouring frequency of seawater and supply power to the electromagnetic device to realize the on-off of the circuit between the power supply and the solenoid valve according to the ship's speed, and further control the on-off of the gas path between the high-pressure gas source and the blowing head.

5. The automatic blowing device for the drainage bucket of the ship seawater centralized cooling system according to claim 4, characterized in that The nanogenerator is arranged in the drainage channel and is perpendicular to the seawater flow direction of the drainage channel.

6. The automatic blowing device for the drainage bucket of the ship seawater centralized cooling system according to claim 2, characterized in that The automatic purging device for the drainage bucket of the ship's seawater centralized cooling system further includes a time control switch, which is connected in series between the power supply and the solenoid valve and is opened and closed according to a preset interval time.

7. The automatic blowing device for the drainage bucket of the ship seawater centralized cooling system according to claim 6, characterized in that The relationship between the running time DT1 and the interval time DT2 of the purging mechanism and the marine organism attachment cycle is: T1 < DT2 < T2 < DT1 < T3 Wherein, from 0 to T1, organic molecules in seawater form an organic film, providing nutrients for the attachment of marine organisms; From T1 to T2, bacteria and small animals and plants adhere to the organic film to form a microbial film; From T2 to T3, dormant bodies of prokaryotes, animal larvae and seaweeds begin to grow on the surface of the microbial film to form a biological community; After T3, large fouling organisms grow rapidly.

8. A ship, characterized in that, Including the ship's side and the ship's seawater centralized cooling system, the ship's seawater centralized cooling system includes: A seawater cooling subsystem, which is used to introduce seawater. The seawater cooling subsystem includes the automatic purging device for the drainage bucket of the ship's seawater centralized cooling system according to any one of claims 1 to 7; An internal circulation cooling water subsystem, an internal circulation cooling medium is introduced into the internal circulation cooling water subsystem, and the internal circulation cooling water subsystem is used for heat exchange with the heat source of the ship; A seawater central heat exchanger, the seawater central heat exchanger has a seawater channel and an internal circulation cooling medium channel, the seawater channel is communicated with the seawater cooling subsystem, the internal circulation cooling medium channel is communicated with the internal circulation cooling water subsystem, and the seawater central heat exchanger is used for heat exchange between the seawater cooling subsystem and the internal circulation cooling water subsystem.

9. The ship according to claim 8, characterized in that, The seawater cooling subsystem further includes a seawater discharge pipe, the drainage bucket is communicated with the inlet of the seawater channel, and the seawater discharge pipe is communicated with the outlet of the seawater channel.

10. The ship according to claim 8, characterized in that, The internal circulation cooling water subsystem includes an internal circulation cooling water inlet pipe, a fresh water pump, a heat source heat exchanger and an internal circulation cooling water outlet pipe. The internal circulation cooling water inlet pipe is communicated with the outlet of the internal circulation cooling medium channel, and the internal circulation cooling water outlet pipe is communicated with the inlet of the internal circulation cooling medium channel. The heat source heat exchanger is respectively communicated with the internal circulation cooling water inlet pipe and the internal circulation cooling water outlet pipe, and the fresh water pump is connected to the internal circulation cooling water inlet pipe.

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