An automatic blowing device for the bucket of a ship's centralized seawater cooling system and the ship

Abstract

This invention relates to the field of marine sea-cooling systems. The invention provides an automatic cleaning device for the diversion bucket of a centralized marine seawater cooling system and a vessel. The automatic cleaning device includes a diversion bucket, a purging mechanism, a power supply, and a switch control assembly. The diversion bucket has a diversion channel communicating with seawater and the centralized seawater cooling system. The purging mechanism is positioned corresponding to the diversion channel and is used to blow high-pressure airflow into the channel. The power supply is electrically connected to the purging mechanism. The switch control assembly is connected between the power supply and the purging mechanism and is used to control the on / off connection between the power supply and the purging mechanism based on the vessel's speed or the flow rate of the seawater in the diversion channel. This application achieves timed, efficient, and automatic cleaning of the diversion bucket, improving the long-term operational reliability of the marine cooling system.

Description

Technical Field

[0001] This invention relates to the field of marine cooling systems, and more particularly to an automatic blowing device for a centralized marine seawater cooling system and a vessel. Background Technology

[0002] Marine cooling systems are critical systems in marine engineering used to cool heat sources such as generator sets and electromechanical equipment. Their main function is to promptly remove the heat generated during equipment operation by circulating seawater or other cooling media, ensuring efficient operation within normal temperature ranges and preventing performance degradation or damage caused by overheating.

[0003] To reduce the power consumption of the sea-flow pumps supplying cooling water to sea-flow heat exchangers, large ships generally adopt centralized gravity cooling technology. Under certain speed conditions, seawater can be drawn into the centralized seawater heat exchanger by gravity using a "bucket" located on the side of the ship, thus achieving gravity cooling without the need for a seawater pump and improving the economic efficiency of the ship's system operation. It should be noted that centralized gravity cooling systems are usually equipped with a backup seawater pump. Under medium and low-speed gravity flow conditions, the seawater pump rotates under the action of the water flow, acting as a resistance component; while under high-speed conditions, when the water supply capacity of the "bucket" is insufficient, the seawater pump can be operated to increase the cooling water supply and the cooling load removal capacity.

[0004] On the other hand, in the aforementioned centralized self-flowing sea-cooling system, due to the highly concentrated cooling load outlet channels, blockage by contaminants will severely affect the normal cooling of heat-generating equipment. Therefore, the requirement for unobstructed channels is extremely high. Among these, marine organism attachment is a key factor affecting the heat exchange performance of centralized sea-flowing heat exchangers. During the operation of ships in seawater, various free microorganisms, plants, and animals are attracted to attach and grow on the functional surfaces of the sea-flowing heat exchanger. Over time, this eventually forms a marine organism attachment layer. Especially under the conditions of low seawater levels during low-speed navigation (or berthing), marine organisms easily attach to the inlet of the diversion bucket, and their growth rate is extremely fast, easily blocking the seawater inlet and seriously affecting the normal operation of the heat exchanger.

[0005] To slow down the attachment and growth of marine organisms, various solutions have emerged, such as seawater electrolysis, chemical release, and antifouling coatings. However, these solutions generally suffer from low efficiency, high consumption, and poor sustainability, making it difficult to meet the requirements for efficient and reliable operation of centralized self-flowing seawater cooling systems, especially the requirements for preventing fouling and clogging of diversion buckets under long-term low-speed or stationary conditions. Summary of the Invention

[0006] This invention provides an automatic cleaning device for the diversion bucket of a centralized seawater cooling system for ships, as well as a ship, to solve the problem in the prior art where marine organisms easily adhere to the surface of heat exchange tubes and grow at a very fast rate when the seawater is low during low-speed navigation (or berthing) of the ship, which seriously affects the normal operation of the heat exchanger. This invention achieves timed, efficient and automatic cleaning of the diversion bucket, improving the long-term operational reliability of the seawater cooling system.

[0007] This invention provides an automatic blowing device for the bucket of a ship's centralized seawater cooling system, comprising:

[0008] A diversion bucket, wherein the diversion bucket has a diversion channel connected to seawater and a centralized seawater cooling system;

[0009] A purging mechanism is provided corresponding to the drainage channel, and the purging mechanism is used to blow high-pressure airflow into the drainage channel;

[0010] A power supply, which is electrically connected to the purging mechanism;

[0011] A switch control assembly is connected between the power supply and the purging mechanism. The switch control assembly is used to control the on / off connection between the power supply and the purging mechanism according to the ship's speed or the flow rate of the seawater in the diversion channel.

[0012] According to the present invention, an automatic purging device for the diversion bucket of a centralized cooling system for seawater in a ship includes a purging mechanism comprising a high-pressure air source, a solenoid valve, and a purging head. The high-pressure air source is connected to the purging head via an air passage. The purging head is disposed within the diversion channel. The high-pressure air source is used to provide high-pressure air to the purging head. The solenoid valve is connected to the air passage between the high-pressure air source and the purging head to control the opening and closing of the air passage. The solenoid valve is connected in series between the switch control component and the power supply.

[0013] According to the present invention, an automatic blowing device for a ship's centralized seawater cooling system with a diversion bucket is provided at the inlet of the diversion channel, and the blowing head is provided with multiple air outlets. The multiple air outlets are arranged facing the inlet grid and the air outlets are arranged in a tree-like fractal pattern, which reduces the blocking effect on the diversion channel, improves the diversion capacity of the diversion bucket, and allows the high-pressure air to be dispersed as evenly as possible to each grid, so as to achieve uniform blowing.

[0014] According to the present invention, an automatic blowing device for a ship's centralized seawater cooling system includes a switch control component comprising a nano-triboelectric 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, in conjunction with the electromagnetic device, controls the on / off state of the circuit between the power supply and the solenoid valve. The electromagnetic device is electrically connected to the nano-triboelectric generator. The nano-triboelectric generator generates electricity according to the scouring frequency of the seawater and supplies power to the electromagnetic device, thereby controlling the on / off state of the circuit between the power supply and the solenoid valve according to the ship's speed, and thus controlling the on / off state of the air passage between the high-pressure air source and the blowing head.

[0015] According to the present invention, an automatic blowing device for a ship's centralized seawater cooling system is provided, wherein the nano-triboelectric generator is arranged in the diversion channel and is perpendicular to the seawater flow direction of the diversion channel.

[0016] According to the present invention, an automatic blowing device for the diversion bucket of a centralized cooling system for a ship's seawater is provided. The automatic blowing device for the diversion bucket of a centralized cooling system for a ship's seawater further includes a time control switch, which is connected in series between the power supply and the solenoid valve. The time control switch is opened and closed according to a preset interval.

[0017] According to the present invention, an automatic blowing device for a ship's centralized seawater cooling system with a diversion bucket is provided, wherein the relationship between the operating time DT1 and the interval time DT2 of the blowing mechanism and the marine organism attachment cycle is as follows:

[0018] T1 < DT2 < T2 < DT1 < T3

[0019] Among them, 0-T1 is an organic film formed by organic molecules in seawater, which provides nutrients for marine organisms to attach to.

[0020] T1-T2 refers to the adhesion of bacteria and tiny plants and animals to the organic film, forming a microbial film;

[0021] T2-T3 represents the dormant bodies of prokaryotes, animal larvae, and algae that begin to grow on the surface of the microbial film, forming a biological community;

[0022] After T3, large fouling organisms grow rapidly.

[0023] The present invention also provides a ship, including a hull and a centralized seawater cooling system, the centralized seawater cooling system comprising:

[0024] A seawater cooling subsystem, wherein the seawater cooling subsystem is used to introduce seawater, and the seawater cooling subsystem includes the automatic blow-out device of the diversion bucket of the ship's centralized seawater cooling system as described in any of the above-mentioned claims;

[0025] An internal circulation cooling water subsystem is provided, wherein an internal circulation cooling medium is introduced into the internal circulation cooling water subsystem, and the internal circulation cooling water subsystem is used to exchange heat with the ship's heat source;

[0026] A centralized seawater heat exchanger has a seawater channel and an internal circulating cooling medium channel. The seawater channel is connected to the seawater cooling subsystem, and the internal circulating cooling medium channel is connected to the internal circulating cooling water subsystem. The centralized seawater heat exchanger is used to exchange heat between the seawater cooling subsystem and the internal circulating cooling water subsystem.

[0027] According to a vessel provided by the present invention, the seawater cooling subsystem further includes a seawater discharge pipe, the diversion bucket is connected to the inlet of the seawater channel, and the seawater discharge pipe is connected to the outlet of the seawater channel.

[0028] According to a ship provided by the present invention, the internal circulation cooling water subsystem includes an internal circulation cooling water inlet pipe, a freshwater pump, a heat source heat exchanger, and an internal circulation cooling water outlet pipe. The internal circulation cooling water inlet pipe is connected to the outlet of the internal circulation cooling medium channel, and the internal circulation cooling water outlet pipe is connected to the inlet of the internal circulation cooling medium channel. The heat source heat exchanger is connected to both the internal circulation cooling water inlet pipe and the internal circulation cooling water outlet pipe. The freshwater pump is connected to the internal circulation cooling water inlet pipe.

[0029] The automatic cleaning device for the diversion bucket of a centralized seawater cooling system provided by this invention, by setting the cleaning mechanism corresponding to the diversion channel of the diversion bucket, uses high-pressure airflow to clean areas within the diversion channel where marine organisms easily attach, effectively removing marine organisms and contaminants attached to the inner wall of the diversion channel. Furthermore, the cleaning mechanism can automatically control its operating state according to changes in seawater flow velocity. At low speeds or when stationary, the cleaning mechanism automatically starts to perform cleaning; at high speeds, the cleaning mechanism automatically shuts down to avoid unnecessary gas consumption. This achieves timed, efficient, and automatic cleaning of the diversion bucket, improving the long-term operational reliability of the seawater cooling system. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the centralized self-flowing offshore cooling system provided by the present invention.

[0032] Figure 2 This is a schematic diagram of the composition principle of the automatic blowing device for the diversion bucket of the centralized cooling system for ships provided by the present invention.

[0033] Figure 3 This is a schematic diagram of the arrangement of the diversion bucket and the blowing head provided by the present invention. Figure 1 .

[0034] Figure 4 This is a schematic diagram of the arrangement of the diversion bucket and the blowing head provided by the present invention. Figure 2 .

[0035] Figure 5 This is a schematic diagram of the attachment patterns of marine organisms provided by the present invention.

[0036] Figure 6 This is a schematic diagram of the opening and closing cycle of the time-controlled switch provided by the present invention.

[0037] Figure label:

[0038] 10. Drainage bucket; 11. Drainage channel; 12. Inlet bar; 20. Seawater central heat exchanger; 30. Seawater discharge pipe; 40. Internal circulation cooling water inlet pipe; 50. Freshwater pump; 60. Heat source heat exchanger; 70. Internal circulation cooling water outlet pipe; 80. Nano-triboelectric generator; 90. Blow-out head; 91. Air outlet; 100. High-pressure air source; 110. Solenoid valve; 120. Power supply; 130. Time control switch; 140. Normally closed switch; 150. Electromagnetic device. Detailed Implementation

[0039] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0040] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0042] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] The following is combined Figures 1 to 6 The present invention provides a detailed description of the automatic blowing device for the diversion bucket of the centralized cooling system for ships and the ships provided in the embodiments of the present invention through specific implementation methods and application scenarios.

[0045] In embodiments of the present invention, such as Figure 1 and Figure 2As shown, the automatic purging device of the ship's seawater centralized cooling system diversion bucket 10 includes a diversion bucket 10, a purging mechanism, a power supply 120, and a switch control component. The diversion bucket 10 has a diversion channel 11 that communicates with seawater and the seawater centralized cooling system. The purging mechanism is provided corresponding to the diversion channel 11 and is used to blow high-pressure airflow into the diversion channel 11. The power supply 120 is electrically connected to the purging mechanism. The switch control component is connected between the power supply 120 and the purging mechanism and is used to control the on / off state between the power supply 120 and the purging mechanism according to the ship's speed or the flow rate of the seawater in the diversion channel 11.

[0046] The diversion bucket 10 has a diversion channel 11 that connects to seawater and a centralized seawater cooling system. The main function of the diversion bucket 10 is to introduce seawater into the centralized seawater cooling system to provide a cooling medium for the system. Through the diversion channel 11, the seawater is guided to the centralized seawater heat exchanger 20 to cool heat sources such as ship generator sets and electromechanical equipment.

[0047] The drainage channel 11 is a key channel for seawater to enter the cooling system, and its unobstructed flow directly affects the normal operation of the cooling system.

[0048] A purging mechanism is installed corresponding to the drainage channel 11 to blow high-pressure airflow into the channel 11. The purging mechanism uses high-pressure airflow to purge the inner wall of the drainage channel 11, effectively removing marine organisms and dirt attached to the inner wall and preventing their accumulation and growth. According to the set control logic, the purging mechanism automatically starts under specific operating conditions (such as low speed or stationary) to achieve timed cleaning and ensure the unobstructed flow of the drainage channel 11. The high-pressure airflow has a powerful impact force, which can quickly and efficiently remove attached substances, improving the cleaning effect.

[0049] The power supply 120 is electrically connected to the purging mechanism to control its operation. In conjunction with the switch control component, the power supply 120 can be disconnected when purging is not required, reducing unnecessary gas consumption.

[0050] A switch control component is connected between the power supply 120 and the purging mechanism, used to control the on / off connection between the power supply 120 and the purging mechanism based on the ship's speed or the seawater flow velocity in the diversion channel 11. The switch control component can automatically control the operating status of the purging mechanism according to the ship's speed or the seawater flow velocity in the diversion channel 11. It automatically starts the purging mechanism at low speeds or when the ship is stationary; it automatically shuts off at high speeds, achieving intelligent control. This automatic control avoids unnecessary purging at high speeds, reducing gas consumption and equipment wear, and improving the system's economy. The switch control component can also set the operating time and interval of the purging mechanism according to the growth cycle of marine organisms, achieving intermittent purging control and further optimizing cleaning and energy-saving effects.

[0051] This application, by setting the purging mechanism corresponding to the diversion channel 11 of the diversion bucket 10, uses high-pressure airflow to purge areas within the diversion channel 11 where marine organisms easily attach, effectively removing marine organisms and debris adhering to the inner wall of the diversion channel 11. Furthermore, the purging mechanism can automatically control its operating state according to changes in seawater flow velocity. At low speeds or when stationary, the purging mechanism automatically starts to perform cleaning; at high speeds, it automatically shuts off to avoid unnecessary gas consumption. This achieves timed, efficient, and automatic cleaning of the diversion bucket 10, improving the long-term operational reliability of the sea-crossing cooling system.

[0052] Reference Figure 2 According to the present invention, an automatic purging device for a ship seawater centralized cooling system diversion bucket 10 includes a purging mechanism comprising 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 via an air passage. The purging head 90 is disposed within a diversion 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 passage between the high-pressure air source 100 and the purging head 90 to control the opening and closing of the air passage. The solenoid valve 110 is connected in series between a switch control component and a power supply 120.

[0053] Understandably, the high-pressure air source 100 is the power source for the purging mechanism, providing high-pressure air to the blow-off head 90. High-pressure air is the medium for cleaning marine organisms and debris from the inner wall of the drainage channel 11. The high-pressure air source 100 is connected to the blow-off head 90 via an air passage, ensuring that high-pressure air can be delivered into the drainage channel 11. Its pressure needs to be designed according to actual needs and the structure of the drainage channel 11 to ensure effective removal of attached marine organisms and debris.

[0054] Solenoid valve 110 is connected in the air path between high-pressure air source 100 and purging head 90, and is used to control the flow of high-pressure air. When solenoid valve 110 receives an open signal, the air path is opened, and high-pressure air flows from high-pressure air source 100 to purging head 90; when solenoid valve 110 receives a close signal, the air path is closed, and high-pressure air stops flowing. The opening and closing action of solenoid valve 110 is controlled by a switching control component, thereby achieving precise control of the purging mechanism.

[0055] The blow-off head 90 is the part of the purging mechanism that directly contacts the inner wall of the drainage channel 11. Its function is to guide high-pressure air to the area that needs cleaning and use the impact force of the high-pressure air to peel off the attached marine organisms and dirt. The blow-off head 90 is located inside the drainage channel 11, and its design needs to take into account the shape and size of the drainage channel 11, as well as the characteristics of the attached marine organisms. The shape, material, and nozzle of the blow-off head 90 can be optimized as needed to ensure that the high-pressure air can effectively cover the area that needs cleaning and generate sufficient impact force to peel off the attached marine organisms and dirt.

[0056] 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 state of solenoid valve 110, which in turn controls the on / off state of high-pressure air source 100. Specifically, the switch control component determines whether the purging mechanism needs to be activated based on preset conditions (such as ship speed or seawater flow rate in the diversion channel 11). If so, it sends an opening signal (energization) to solenoid valve 110, causing solenoid valve 110 to conduct and high-pressure air source 100 to supply high-pressure air to purging head 90. If not, it sends a closing signal (de-energization) to solenoid valve 110, causing solenoid valve 110 to de-energize and high-pressure air source 100 to stop supplying air to purging head 90. This series connection achieves automated control of the purging mechanism, avoiding the inconvenience of manual operation, and allows for adjustment of the cleaning frequency according to actual conditions, saving energy.

[0057] Reference Figure 3 and Figure 4 According to the present invention, an automatic blowing device for a ship's centralized seawater cooling system, a diversion bucket 10, is provided at the inlet of the diversion channel 11, and a plurality of air outlets 91 are provided on the blowing head 90, which are arranged facing the inlet grid 12. The air outlets 91 adopt a dendritic fractal arrangement, which not only reduces the blocking effect on the diversion channel 11 and improves the diversion capacity of the diversion bucket, but also allows the high-pressure air to be evenly distributed to each grid as much as possible, achieving uniform blowing.

[0058] Understandably, the multiple air outlets 91 are positioned facing the inlet grille 12 to concentrate the high-pressure airflow onto the inlet grille 12 area. Since the inlet grille 12 is a high-risk area where marine organisms easily attach, this design ensures efficient cleaning of the inlet grille 12, preventing marine organisms from attaching and growing on the grille.

[0059] Reference Figure 1 and Figure 2 According to the present invention, an automatic blowing device for a ship's centralized seawater cooling system diversion bucket 10 includes a switch control component comprising a nano-triboelectric generator 80, an electromagnetic device 150, and a normally closed switch 140. The normally closed switch 140 is connected in series between a power supply 120 and a solenoid valve 110. The normally closed switch 140, in conjunction with the electromagnetic device 150, controls the on / off state of the circuit between the power supply 120 and the solenoid valve 110. The electromagnetic device 150 is electrically connected to the nano-triboelectric generator 80. The nano-triboelectric generator 80 generates electricity according to the scouring frequency of the seawater and supplies power to the electromagnetic device 150, thereby controlling the on / off state of the circuit between the power supply 120 and the solenoid valve 110 according to the ship's speed, and thus controlling the on / off state of the air passage between the high-pressure air source 100 and the blowing head 90.

[0060] Understandably, the nano-triboelectric generator 80 is installed in a location sensitive to seawater flow velocity (preferably within the seawater channel of the diversion bucket 10), enabling it to sensitively detect changes in seawater flow velocity and generate electricity based on the seawater scouring speed. When the ship is traveling at high speed, the seawater flow velocity is high, and the nano-triboelectric generator 80 generates sufficient electrical energy; while at low speeds or when the ship is moored, the seawater flow velocity is low, and the electrical energy generated by the nano-triboelectric generator 80 decreases. The electrical 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 only activates the purging mechanism when needed (at low speeds or when moored), avoiding unnecessary gas consumption and improving the system's economy.

[0061] Electromagnetic device 150 and normally closed switch 140 are connected in series between power supply 120 and solenoid valve 110 to control the on / off state of the circuit. When the nano-triboelectric generator 80 generates sufficient electrical energy, electromagnetic device 150 is energized, attracting the ferromagnetic tab of normally closed switch 140, thus disconnecting the circuit. When the nano-triboelectric generator 80 cannot generate sufficient electrical energy, electromagnetic device 150 is de-energized, normally closed switch 140 closes, and the circuit is connected. Electromagnetic device 150 automatically controls the start and stop of the purging mechanism based on the electrical energy output of nano-triboelectric generator 80, realizing automatic antifouling function based on ship speed.

[0062] Normally closed switch 140 is connected in series with electromagnetic device 150 to control the circuit connection between power supply 120 and purging mechanism. Under normal circumstances, normally closed switch 140 is closed to ensure circuit continuity. The ferromagnetic tab of normally closed switch 140 operates under the control of electromagnetic device 150 to automatically open and close the circuit. When electromagnetic device 150 is energized, normally closed switch 140 is open; when electromagnetic device 150 is de-energized, normally closed switch 140 is closed.

[0063] Thus, the nano-triboelectric generator 80 generates electrical energy based on changes in seawater flow velocity, and the electromagnetic device 150 controls the opening and closing of the normally closed switch 140 based on the presence or absence of electrical energy, thereby realizing the automatic start and stop of the purging mechanism. Under low-speed or moored conditions, the purging mechanism automatically starts to perform cleaning; at high speeds, the purging mechanism automatically shuts down to avoid unnecessary gas consumption.

[0064] Reference Figure 1 According to the present invention, an automatic blowing device for a centralized cooling system for seawater in a ship includes a nano-friction generator 80 arranged in a diversion channel 11 and perpendicular to the direction of seawater flow in the diversion channel 11.

[0065] Understandably, since the nano-triboelectric generator 80 is in direct contact with flowing seawater, the seawater can directly act on the blades or other load-bearing structures of the nano-triboelectric generator 80 as it flows through the channel. This arrangement maximizes the utilization of the flowing kinetic energy of the seawater, enabling the nano-triboelectric generator 80 to more effectively capture the scouring energy of the seawater, thereby improving power generation efficiency.

[0066] Reference Figure 2 According to the present invention, an automatic blowing device for a ship's centralized seawater cooling system diversion bucket 10 is provided. The automatic blowing device for a ship's centralized seawater cooling system diversion bucket 10 also includes a time control switch 130, which is connected in series between the power supply 120 and the solenoid valve 110. The time control switch 130 is opened and closed according to a preset interval time.

[0067] Understandably, the timer switch 130 contains an internal timer that can be set to activate and deactivate at specific time intervals. When the preset activation time is reached, the timer switch 130 closes the circuit, connecting the power supply and activating the solenoid valve 110, thus initiating the purging mechanism. When the preset deactivation time is reached, the timer switch 130 disconnects the circuit, cutting off the power supply, closing the solenoid valve 110, and stopping the purging mechanism. According to marine biological research, the attachment and growth of marine organisms follow certain cyclical patterns. The timer switch 130 can be set with appropriate activation frequencies and durations based on these patterns to effectively prevent the attachment and reproduction of marine organisms during critical time periods.

[0068] Specifically, when the ship is sailing at low speed or even moored, the seawater flow rate and velocity entering the seawater channel of the diversion bucket 10 are low, so marine organisms may gradually attach and grow. At this time, because the nano-triboelectric generator 80 is under the condition of low-velocity seawater scouring, it cannot generate continuous electrical energy to excite the electromagnetic device 150 to form electromagnetic force. The ferromagnetic lever of the normally closed switch 140 closes to form a connected circuit, which is ready to supply power to the solenoid valve 110. With the timed opening and closing of the timer switch 130, the power supply 120 continuously supplies power to the solenoid valve 110 at intervals of DT2, and the power supply duration is DT1. Within the time range of DT1, the high-pressure filter and the blow-off head 90 are connected to blow high pressure onto the inlet grid 12 of the diversion bucket 10, completely blocking the conditions for marine organism attachment and growth, and ensuring that the diversion bucket 10 will not be blocked by marine organisms under long-term low-speed sailing or mooring conditions.

[0069] Reference Figure 5 and Figure 6 According to the present invention, an automatic blowing device for a ship's centralized seawater cooling system with a diversion bucket 10 is provided. The relationship between the operating time DT1 and the interval time DT2 of the blowing mechanism and the marine organism attachment cycle is as follows: T1 < DT2 < T2 < DT1 < T3. Among them, 0-T1 is when organic molecules in seawater form an organic film, providing nutrients for marine organism attachment; T1-T2 is when bacteria and microorganisms adhere to the organic film, forming a microbial film; T2-T3 is when dormant prokaryotes, animal larvae and algae begin to grow on the surface of the microbial film, forming a biological community; after T3, large fouling organisms grow rapidly.

[0070] Understandably, the closing and opening times DT1 and DT2 of the time-controlled switch 130 are set according to the attachment conditioned modulus of marine organisms and biofilm formation cycles. Specifically: According to the attachment patterns of marine organisms: During the period from 0 to T1, organic molecules in seawater, such as free proteins, polysaccharides, and metabolic products of biological cells, form an organic film of a certain thickness, providing the necessary nutrients for the attachment and survival of marine organisms; During the period from T1 to T2, bacteria and microorganisms adhere to the conditioned modulus under external environmental conditions through electrostatic forces, van der Waals forces, etc., forming a biofilm; Since these periods are relatively short, the formed conditioned modulus or biofilm is easily removed by blowing, therefore the operating interval DT2 of the automatic blowing device of the diversion bucket 10 needs to be greater than T1 to save high-pressure air consumption, while being less than T2 to achieve efficient cleaning; During the period from T2 to T3, prokaryotes, animal larvae, and resistant dormant algae begin to grow on the surface of the biofilm, forming a biological community; After T3, large fouling organisms grow rapidly, at which point gas blowing is difficult to remove them. Therefore, to achieve broad-spectrum and efficient removal of conditioned membranes, biofilms, and biological communities, and to prevent the growth of large fouling organisms, the operating time DT1 of the automatic blowing device in the diversion bucket 10 should be greater than T2. ​​Furthermore, to reduce high-pressure air consumption, the operating time DT1 needs to be controlled within T3. In summary, the relationship between the device operating time DT1, the interval time DT2, and the marine organism attachment cycle is: T1 < DT2 < T2 < DT1 < T3.

[0071] Reference Figure 1 The present invention also provides a ship, including a ship's hull and a centralized seawater cooling system. The centralized seawater cooling system includes a seawater cooling subsystem, an internal circulation cooling water subsystem, and a centralized seawater heat exchanger 20. The seawater cooling subsystem is used to introduce seawater and includes the aforementioned automatic purging device of the centralized seawater cooling system diversion bucket 10. An internal circulation cooling medium is introduced into the internal circulation cooling water subsystem, which is used to exchange heat with the ship's heat source. The centralized seawater 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 system. The centralized seawater heat exchanger 20 is used to exchange heat between the seawater cooling subsystem and the internal circulation cooling water system.

[0072] Understandably, the seawater cooling subsystem is used to introduce seawater as a cooling medium. Seawater enters the system through the diversion bucket 10 or other means, passes through the seawater channels of the centralized seawater heat exchanger 20, and carries away heat from the heat exchanger, thereby cooling the internal circulating cooling medium. The seawater cooling subsystem provides the necessary cooling capacity for the entire cooling cycle, ensuring that the system can effectively reduce the temperature of the ship's heat source.

[0073] The internal circulation cooling water subsystem circulates an internal circulation cooling medium (usually fresh water), whose main function is to exchange heat with the ship's heat sources. The internal circulation cooling water subsystem uses a fresh water pump 50 to drive the cooling medium to circulate within the system, transferring heat generated by the ship's heat sources (such as generator sets, electromechanical 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 achieving heat removal and ensuring that the heat source equipment operates within its normal temperature range.

[0074] The main function of the seawater centralized heat exchanger 20 is to realize heat exchange between the seawater cooling subsystem and the internal circulating cooling water subsystem.

[0075] The seawater channel is connected to the seawater cooling subsystem and is used for the introduction and discharge of seawater.

[0076] 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.

[0077] Through these two channels, the seawater central heat exchanger 20 can efficiently transfer heat from the internal circulating cooling medium to the seawater, thereby achieving the cooling purpose.

[0078] Reference Figure 1 According to the present invention, the seawater cooling subsystem of a ship further includes a seawater discharge pipe 30, the diversion 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.

[0079] Understandably, the diversion bucket 10 is mounted on the side of the ship, and its main function is to efficiently introduce seawater into the seawater channel. This design utilizes the hydrodynamic force of the ship's navigation, using the "bucket" structure to allow seawater to flow into the system by gravity, reducing reliance on additional pumping equipment.

[0080] The seawater discharge pipe 30 is connected to the outlet of the seawater channel, and its main function is to discharge the seawater after heat exchange out of the system. By rationally designing the discharge pipe, it is ensured that seawater can be discharged smoothly and avoids accumulation in the system, thereby maintaining the normal operation of the system.

[0081] 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, and 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 both the internal circulation cooling water inlet pipe 40 and the internal circulation cooling water outlet pipe 70. The fresh water pump 50 is connected to the internal circulation cooling water inlet pipe 40.

[0082] It is understandable 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.

[0083] The internal circulation cooling water inlet pipe 40 transports the internal circulation cooling medium (usually fresh water) from the outlet of the internal circulation 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. Through its connection with the internal circulation cooling medium channel, the inlet pipe maintains the overall circulation of the internal circulation cooling system, ensuring continuous flow of the cooling medium and thus achieving efficient heat removal.

[0084] The internal circulation cooling water outlet pipe 70 transports the cooled medium, after heat exchange, from the heat source heat exchanger 60 to the inlet of the internal circulation cooling medium channel. This ensures that the cooling medium can smoothly return to the seawater centralized heat exchanger 20 for the next cooling cycle.

[0085] Freshwater pump 50 provides power to drive cooling water to circulate in the loop. Through continuous circulation, cooling water can be continuously flowed through heat exchanger 60, carrying away the heat generated by the heat source and maintaining the normal operating temperature of the heat source.

[0086] The heat exchanger 60 is the core component for heat exchange between the cooling water and the heat source. The cooling water absorbs heat from the heat source in the heat exchanger 60, thereby lowering the temperature of the heat source and preventing it from overheating and being damaged.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic blowing device for the bucket of a ship's centralized seawater cooling system, characterized in that, include: A diversion bucket, wherein the diversion bucket has a diversion channel connected to seawater and a centralized seawater cooling system; A purging mechanism is provided corresponding to the drainage channel, and the purging mechanism is used to blow high-pressure airflow into the drainage channel; A power supply, which is electrically connected to the purging mechanism; A switch control assembly is connected between the power supply and the purging mechanism. The switch control assembly is used to control the on / off connection between the power supply and the purging mechanism according to the ship's speed or the flow rate of the seawater in the diversion channel. The purging mechanism includes a high-pressure air source, a solenoid valve, and a purging head. The high-pressure air source is connected to the purging head via an air passage. The purging head is located within a drainage channel. The high-pressure air source is used to provide high-pressure air to the purging head. The solenoid valve is connected to the air passage between the high-pressure air source and the purging head to control the opening and closing of the air passage. The solenoid valve is connected in series between the switch control component and the power supply. The switch control assembly includes a nano-triboelectric 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, in conjunction with the electromagnetic device, controls the on / off state of the circuit between the power supply and the solenoid valve. The electromagnetic device is electrically connected to the nano-triboelectric generator. The nano-triboelectric generator generates electricity according to the scouring frequency of seawater and supplies power to the electromagnetic device, thereby controlling the on / off state of the circuit between the power supply and the solenoid valve according to the ship's speed, and thus controlling the on / off state of the air passage between the high-pressure air source and the blow-off head.

2. The automatic blowing device for the diversion bucket of the centralized seawater cooling system for ships according to claim 1, characterized in that, The inlet of the drainage channel is provided with an inlet grille, and the blow-out head is provided with multiple air outlets, which are arranged facing the inlet grille and are arranged in a tree-like fractal pattern.

3. The automatic blowing device for the diversion bucket of the centralized seawater cooling system for ships according to claim 1, characterized in that, The nano-triboelectric generator is arranged inside the drainage channel and is perpendicular to the direction of seawater flow in the drainage channel.

4. The automatic blowing device for the diversion bucket of the centralized seawater cooling system for ships according to claim 1, characterized in that, The automatic blowing device of the diversion bucket of the ship's centralized seawater cooling system also includes a time control switch, which is connected in series between the power supply and the solenoid valve. The time control switch opens and closes according to a preset interval.

5. The automatic blowing device for the diversion bucket of the centralized seawater cooling system for ships according to claim 4, characterized in that, The relationship between the operating time DT1 and the interval DT2 of the purging mechanism and the marine organism attachment cycle is as follows: T1 < DT2 < T2 < DT1 < T3 Among them, 0-T1 is an organic film formed by organic molecules in seawater, which provides nutrients for marine organisms to attach to. T1-T2 refers to the adhesion of bacteria and tiny plants and animals to the organic film, forming a microbial film; T2-T3 represents the dormant bodies of prokaryotes, animal larvae, and algae that begin to grow on the surface of the microbial film, forming a biological community; After T3, large fouling organisms grow rapidly.

6. A ship, characterized in that, Includes the ship's hull and a centralized seawater cooling system, wherein the centralized seawater cooling system includes: A seawater cooling subsystem, wherein the seawater cooling subsystem is used to introduce seawater, and the seawater cooling subsystem includes the automatic blow-out device for the diversion bucket of the ship's centralized seawater cooling system as described in any one of claims 1 to 5; An internal circulation cooling water subsystem is provided, wherein an internal circulation cooling medium is introduced into the internal circulation cooling water subsystem, and the internal circulation cooling water subsystem is used to exchange heat with the ship's heat source; A centralized seawater heat exchanger has a seawater channel and an internal circulating cooling medium channel. The seawater channel is connected to the seawater cooling subsystem, and the internal circulating cooling medium channel is connected to the internal circulating cooling water subsystem. The centralized seawater heat exchanger is used to exchange heat between the seawater cooling subsystem and the internal circulating cooling water subsystem.

7. The ship according to claim 6, characterized in that, The seawater cooling subsystem also includes a seawater discharge pipe, the diversion bucket is connected to the inlet of the seawater channel, and the seawater discharge pipe is connected to the outlet of the seawater channel.

8. The ship according to claim 7, characterized in that, The internal circulation cooling water subsystem includes an internal circulation cooling water inlet pipe, a freshwater pump, a heat source heat exchanger, and an internal circulation cooling water outlet pipe. The internal circulation cooling water inlet pipe is connected to the outlet of the internal circulation cooling medium channel, and the internal circulation cooling water outlet pipe is connected to the inlet of the internal circulation cooling medium channel. The heat source heat exchanger is connected to both the internal circulation cooling water inlet pipe and the internal circulation cooling water outlet pipe. The freshwater pump is connected to the internal circulation cooling water inlet pipe.

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