A marine deep water intake device and method

Abstract

This invention discloses a deep-sea water intake device and method, belonging to the field of deep-sea aquaculture technology. It includes a movable water intake pipe, a water intake well, a water intake pipe lifting device, a transition chamber, a seabed valve, a deep-sea water intake grid, a mid-sea water intake grid, a shallow-sea water intake grid, a bottom water intake grid, side openings of the transition chamber, and a water-blocking baffle. The water-blocking baffle is connected to the movable water intake pipe and located above or below the mid-sea water intake grid, and is used to control the opening and closing of the mid-sea water intake grid. Through this invention, by adjusting the height of the movable water intake pipe and the position of the water-blocking baffle at the mid-water inlet, deep seawater is allowed to pass through the water intake pipe, the transition chamber located at the bottom of the vessel, the seabed valve, and related piping systems to the seawater pump suction port, thereby achieving deep-sea water intake. This provides a more efficient and controllable water intake method, allowing the water intake depth to be adjusted according to aquaculture needs and seawater characteristics, thereby improving aquaculture production efficiency, reducing energy waste, mitigating environmental impact, and enhancing sustainability.

Description

Technical Field

[0001] This invention relates to a deep-sea water intake device and method, belonging to the field of deep-sea aquaculture technology. Background Technology

[0002] Deep-sea aquaculture is a type of aquaculture conducted in deep waters far from the coastline. Unlike traditional nearshore or shallow-sea aquaculture, deep-sea aquaculture typically takes place in waters tens to hundreds of meters deep, or even deeper. The development of this field aims to meet the growing demand for seafood, improve the aquaculture environment, reduce the impact on nearshore ecosystems, and provide more sustainable fishery resources.

[0003] Currently, deep-sea aquaculture has become an important part of fisheries, and enclosed aquaculture vessels based on water exchange systems are one of the core pieces of equipment for developing deep-sea aquaculture. In deep-sea aquaculture, some fish species require specific seawater at specific depths in specific sea areas to maintain their growth and health, especially those fish species with demanding requirements for water temperature and quality. To provide seawater that meets these requirements, stratification and deep-sea water intake devices are indispensable.

[0004] Traditional marine engineering equipment, such as seawater towers for water intake, is usually suitable for small-scale seawater needs. However, for large aquaculture vessels, the water exchange volume is large, so traditional equipment and methods cannot meet their needs. Summary of the Invention

[0005] The purpose of this invention is to provide an apparatus and method for solving the problem of large-volume deep water intake at sea. By adjusting the height of the vertical water intake pipe and the position of the water-blocking gate at the middle water inlet, deep seawater is allowed to pass through the water intake pipe and the transition chamber located at the bottom of the ship, the seabed valve and related piping system to the seawater pump suction port, thereby realizing deep water intake.

[0006] The technical problem to be solved by this invention is achieved by the following technical solution:

[0007] This invention provides a deep-sea water intake device, which is installed on a ship or marine engineering equipment and can extract water from deep sea with large volumes of water. The water intake device includes a movable water intake pipe, a water intake well, a water intake pipe lifting device, a transition chamber, a seabed valve, a deep water intake grid, a middle water intake grid, a shallow water intake grid, a bottom water intake grid, a side opening of the transition chamber, and a water-blocking baffle.

[0008] The water intake well is located inside the ship or marine engineering equipment. The movable water intake pipe is inserted into the water intake well. The movable water intake pipe is provided with a deep water intake grid, a middle water intake grid, a shallow water intake grid and a bottom water intake grid from top to bottom.

[0009] The water intake pipe lifting device is connected to the movable water intake pipe. The transition chamber is located at the bottom of the ship or marine equipment and the movable water intake pipe passes through the interior of the transition chamber. The transition chamber is connected to a sea valve and has a side opening for communicating with the movable water intake pipe.

[0010] The water-blocking baffle is connected to the movable water intake pipe and is located above or below the middle water intake grid. The water-blocking baffle is used to control the opening and closing of the middle water intake grid.

[0011] As a preferred example, the water-blocking baffle is a cylindrical water-blocking structure, and the water-blocking baffle is confined inside the movable water intake pipe by positioning bolts.

[0012] As a preferred embodiment, the middle layer water intake grid is provided with an upper limit slot above and a lower limit slot below. A water-blocking baffle is located between the upper limit slot and the lower limit slot. On the movable water intake pipe between the upper limit slot and the lower limit slot, a downward positioning bolt and an upward positioning bolt are respectively connected from top to bottom. The downward positioning bolt is used to limit the top of the water-blocking baffle, so that the water-blocking baffle is kept in the downward position and prevents seawater from entering the movable water intake pipe from the middle layer water intake grid. The upward positioning bolt is used to limit the bottom of the water-blocking baffle, so that the water-blocking baffle is kept in the upward position and allows seawater to enter the movable water intake pipe from the middle layer water intake grid.

[0013] As a preferred embodiment, the water intake device further includes a water-blocking baffle displacement pin, which is used to displace the water-blocking baffle. The side of the water-blocking baffle is provided with at least one water-blocking baffle groove for displacing the water-blocking baffle, and the water-blocking baffle groove is located within the opening range of the middle layer water intake grid. The water-blocking baffle displacement pin and the water-blocking baffle groove cooperate to displace the water-blocking baffle.

[0014] As a preferred example, the water intake device further includes a seabed gate and a seabed grid. The bottom of the transition chamber is provided with a seabed gate that communicates with the movable water intake pipe, and a seabed grid is installed at the bottom of the seabed gate.

[0015] As a preferred embodiment, the seagate is further provided with a side opening, which is located outside the movable water intake pipe and is connected to the movable water intake pipe.

[0016] As a preferred example, multiple guide rings are provided between the water intake well and the movable water intake pipe, and the guide rings are used to guide the movable water intake pipe when it slides between the water intake well and the water intake pipe.

[0017] As a preferred example, multiple sealing rings are provided between the water intake well and the movable water intake pipe, and the sealing rings are used to seal the connection between the movable water intake pipe and the water intake well.

[0018] The present invention also provides a method for extracting seawater from a specific water layer using the deep-sea water extraction device described above, the method comprising the following steps:

[0019] (1) Shallow water intake operation: The water intake pipe lifting device places the bottom water intake grid of the movable water intake pipe at the bottom of the transition chamber and the seabed door. The seabed valve is connected to a seawater pump. When the seabed valve is opened and the seawater pump is working, the seawater flows through the bottom water intake grid, the seabed grid and the side opening of the seabed door, through the shallow water intake grid of the movable water intake pipe and the side opening of the transition chamber, and finally flows into the transition chamber and is transported to the ship's seawater system.

[0020] (2) Mid-level water intake operation: The position of the movable water intake pipe is adjusted by the water intake pipe lifting device so that the mid-level water intake grid of the movable water intake pipe corresponds to the side opening of the transition tank. The seabed valve is opened and the seawater pump is working. Seawater passes through the bottom water intake grid, flows through the mid-level water intake grid of the movable water intake pipe and the side opening of the transition tank, and finally flows into the transition tank and is delivered to the ship's seawater system. During the operation, the water baffle is in the upward position, keeping the mid-level water intake grid in the open state.

[0021] (3) Deep water intake operation: The position of the movable water intake pipe is adjusted by the water intake pipe lifting device so that the deep water intake grid of the movable water intake pipe corresponds to the side opening of the transition tank. The seabed valve is opened and the seawater pump is working. Seawater passes through the bottom water intake grid, flows through the deep water intake grid of the movable water intake pipe and the side opening of the transition tank, and finally flows into the transition tank and is transported to the ship's seawater system. During the operation, the water baffle is in the downward position, keeping the middle water intake grid in the closed state to prevent seawater from flowing in from the middle water intake grid.

[0022] This invention also provides a working principle and operation method for a water-blocking baffle. The displacement operation of the water-blocking baffle is performed on the inner side of the ship above the waterline, and the groove of the water-blocking baffle is always within the opening range of the middle water intake grid. The operation method of the water-blocking baffle includes the following steps:

[0023] Step 1: When it is necessary to take water from shallow or mid-layer water, tighten the upper positioning bolt on the movable water intake pipe. The upper positioning bolt limits the water-blocking baffle to the upper position of the mid-layer water intake grid. The upper positioning groove prevents the water-blocking baffle from moving upward, and the upper positioning bolt prevents the water-blocking baffle from moving downward. At this time, the water-blocking baffle is in its initial state. In this state, the lower positioning bolt is not installed or tightened.

[0024] Step 2: When it is necessary to extract water from deep water bodies, pass the water-blocking baffle displacement pin through the grid hole of the middle layer water intake grid and insert it into the water-blocking baffle groove. Then loosen the upper position positioning bolt, and slowly lower the water-blocking baffle to the lower limit slot through the water-blocking baffle displacement pin. Then remove the water-blocking baffle displacement pin, screw in the upper position positioning bolt, and fix the water-blocking baffle in the lower position of the middle layer water intake grid.

[0025] Step 3: Reverse the above steps to move the water-blocking baffle upwards.

[0026] The beneficial effects of this invention are:

[0027] This invention provides a device and method for extracting large volumes of deep seawater at sea. By adjusting the height of the vertically movable water intake pipe and the position of the baffle plate at the central inlet, deep seawater is allowed to pass through the intake pipe, the transition chamber located at the bottom of the ship, the seabed valve, and related piping systems to the seawater pump suction port, thereby achieving deep seawater extraction. This invention provides a more efficient and controllable water extraction method for deep-sea aquaculture, allowing the water extraction depth to be adjusted according to aquaculture needs and seawater characteristics, thereby improving aquaculture production efficiency, reducing energy waste, mitigating environmental impact, and enhancing sustainability. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the deep water intake device in an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram illustrating the principle of deep water intake device for extracting water from shallow seawater in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram illustrating the principle of water extraction from the middle layer of seawater by the deep water extraction device in an embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram illustrating the principle of deep seawater extraction by the deep water extraction device in an embodiment of the present invention.

[0032] Figure 5 This is a schematic diagram of the installation structure of the water-blocking baffle in an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram illustrating the working principle of the water-blocking baffle in an embodiment of the present invention.

[0034] In the diagram: 1. Movable intake pipe; 2. Intake well; 3. Intake pipe lifting device; 4. Transition chamber; 5. Subsea gate; 6. Subsea valve; 7. Guide ring; 8. Sealing ring; 9. Deep intake grid; 10. Mid-layer intake grid; 11. Shallow intake grid; 12. Bottom intake grid; 13. Subsea grid; 14. Side opening of subsea gate; 15. Side opening of transition chamber; 16. Water-blocking baffle; 17. Upper limit slot; 18. Lower limit slot; 19. Water-blocking baffle groove; 20. Downward positioning bolt; 21. Upward positioning bolt; 22. Water-blocking baffle displacement pin. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for the convenience of describing the invention and for 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 invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0040] refer to Figure 1 This invention provides a deep-sea water intake device, which is installed on a ship or marine engineering equipment and is capable of taking water from deep sea areas with large volumes of water. The water intake device includes a movable water intake pipe 1, a water intake well 2, a water intake pipe lifting device 3, a transition chamber 4, a seabed gate 5, a seabed valve 6, a guide ring 7, a sealing ring 8, a deep-sea water intake grid 9, a mid-sea water intake grid 10, a shallow-sea water intake grid 11, a bottom water intake grid 12, a seabed grid 13, a side opening 14 for the seabed gate, a side opening 15 for the transition chamber, and a water-blocking baffle 16 and related structures.

[0041] Specifically:

[0042] The movable water intake pipe 1, as the core component for deep water intake, is equipped with a deep water intake grid 9, a middle water intake grid 10, a shallow water intake grid 11, and a bottom water intake grid 12, arranged sequentially from top to bottom. These grids serve as filters, and the depth of the water intake point is determined by adjusting the height of the movable water intake pipe 1, allowing water from different depth layers to enter the movable water intake pipe 1.

[0043] Intake well 2: Intake well 2 serves as a guide tube or sleeve for the movable intake pipe 1. The movable intake pipe 1 enters the water underwater through intake well 2, ensuring that the intake pipe descends or ascends vertically along a predetermined path. Simultaneously, intake well 2 also functions to prevent seawater from entering the ship's interior. Preventing seawater from entering the ship's interior helps maintain the structural integrity of the ship or marine engineering equipment. The movable intake pipe 1 is inserted into intake well 2; in this embodiment, intake well 2 is located inside the deep-sea aquaculture vessel.

[0044] Water intake pipe lifting device 3: The drive end is connected to the movable water intake pipe 1 and is used to adjust the height of the movable water intake pipe 1. The water intake pipe lifting device 3 can adopt an electric lifting system, a hydraulic lifting system, or a manual lifting device, among which the electric lifting system is one of the most common types of water intake pipe lifting devices 3. It includes a motor, a gear system, and a guide rail. The motor transmits power through the gear system, thereby causing the water intake pipe to rise or fall on the guide rail. The system is usually connected to a control panel, and the operator can use buttons or a remote control to adjust the water intake depth.

[0045] The hydraulic lifting system uses a hydraulic cylinder to achieve the lifting function. The hydraulic cylinder uses liquid pressure to move the movable water intake pipe 1 up and down. The system typically has a large load-bearing capacity and smooth operation.

[0046] Manual water pipe lifting devices 3 are suitable for small installations or applications requiring occasional adjustments. These devices typically include a manual knob, handle, or lever, allowing the operator to physically raise or lower the water pipe.

[0047] Transition Chamber 4: Transition Chamber 4 is a key component in the deep water intake system. It is installed at the bottom of the ship or marine equipment and is used to transfer seawater in the movable intake pipe 1 to the seabed valve 6 and the corresponding pipelines on the ship.

[0048] The transition chamber 4 is connected to the subsea valve 6, which controls the intake flow rate and ensures seawater can enter the corresponding pipeline system. The presence of the transition chamber 4 allows the movable intake pipe 1 to connect to the subsea valve 6 and coordinates their operation. The main function of the transition chamber 4 is to transfer seawater from the movable intake pipe 1 to the subsea valve 6. This ensures that seawater collected from different water layers can be effectively guided and distributed. Through the transition chamber 4, seawater transitions from the underwater environment to the shipboard system for subsequent processing or distribution.

[0049] The transition chamber 4 is equipped with side openings 15 for connecting to the movable water intake pipe 1. This allows the movable water intake pipe 1 to transmit collected seawater to the seabed valve 6 through the transition chamber 4. The design of the transition chamber 4 takes into account the needs of water flow control, which helps to reduce the water flow velocity and the degree of turbulence, thereby ensuring that no severe eddies or pressure losses are generated during the transition.

[0050] Submarine door 5: A submarine door 5, connected to the movable water intake pipe 1, is provided at the bottom of the transition chamber 4. A submarine grid 13 is installed at the bottom of the submarine door 5. During shallow water intake operations, the submarine door 5 and the submarine grid 13 are used to compensate for the insufficient flow area of ​​the grid at the bottom of the water intake pipe. The submarine door 5 is also provided with a side opening 14, which is located outside the movable water intake pipe 1 and is connected to the movable water intake pipe 1.

[0051] Subsea valve 6: Used for the isolation and control of internal piping from seawater outside the ship.

[0052] Guide rings 7 and sealing rings 8: Multiple guide rings 7 and multiple sealing rings 8 are installed between the intake well 2 and the movable intake pipe 1. Guide rings 7 are annular components installed within the intake well 2, and their main function is to provide guidance. When the movable intake pipe 1 rises or falls, the guide rings 7 ensure it moves along the correct path to avoid friction or jamming with the inner wall of the intake well 2. By reducing friction and resistance, the guide rings 7 help ensure the smooth movement of the movable intake pipe 1. Sealing rings 8 are annular sealing devices installed between the intake well 2 and the movable intake pipe 1. Their main function is to ensure a seal between the intake well 2 and the movable intake pipe 1, preventing seawater from entering the interior of the vessel or marine equipment. This is crucial for maintaining system integrity and preventing corrosion and damage. Sealing rings 8 are typically made of corrosion-resistant materials to maintain their long-term performance. The presence of sealing rings 8 helps reduce potential leaks, ensuring that seawater can only flow through the movable intake pipe 1 and does not leak into the surrounding environment. Sealing rings 8 also play a role in protecting water quality. Effective sealing prevents impurities from external water bodies from entering the water intake pipe, thereby maintaining the consistency and purity of the water quality.

[0053] Deep water intake grid 9: During deep water intake operations, the deep water intake grid 9 is used to ensure communication between the movable intake pipe 1 and the transition chamber 4. It acts as a channel for deep water intake, allowing water to be drawn from deeper water layers.

[0054] Intermediate water intake grid 10: During intermediate water intake operation, the intermediate water intake grid 10 ensures the connection between the movable water intake pipe 1 and the transition chamber 4, allowing water to be taken from a water layer of medium depth.

[0055] Shallow intake screen 11: The shallow intake screen 11 is used for communication during shallow water intake operations. It ensures the connection between the movable intake pipe 1 and the transition chamber 4 so that water can be taken from the shallow water body.

[0056] Bottom intake grille 12: Located on the seabed, the bottom intake grille 12 serves as the seawater intake point. It ensures that the intake pipe can draw water from the seabed, while its bottom opening is also used for sand discharge, preventing sand, mud, or impurities from the seabed from entering the water intake system and maintaining the unobstructed flow of the intake.

[0057] Subsea grid 13: During shallow water intake operations, subsea grid 13 serves as the intake grid for the subsea gate 5. It guides seawater flow to the intake pipe for water intake from the seabed.

[0058] A bar screen consists of a series of parallel or intersecting rods, beams, or plates with gaps between them. These gaps allow seawater to pass through while blocking solid impurities or other substances. The gap size of the bar screen can be adjusted as needed to achieve different screening effects. In deep water intake systems, bar screens serve multiple functions. They are used to guide fluids, such as seawater, ensuring it flows to the appropriate intake pipe or channel. Bar screens can also be used to filter and screen solid matter in the water to prevent it from entering the intake system, maintaining system flow and preventing blockages.

[0059] Side openings 14 of the seabed gate: These openings are located on the side of the seabed gate 5, outside the movable intake pipe 1. Their main function is to ensure communication between the seabed gate 5 and the movable intake pipe 1. When the deep water intake system needs to draw water from different depths, the side openings 14 of the seabed gate allow seawater to flow through the movable intake pipe 1 and be drawn in from the seabed gate 5.

[0060] Side openings 15 of the transition chamber: These openings are located on the side of the transition chamber 4, and also typically on the outside of the movable water intake pipe 1. Their main function is to ensure communication between the transition chamber 4 and the movable water intake pipe 1. The side openings 15 of the transition chamber are used to guide seawater flow through the transition chamber 4 for further connection with the seabed gate 5 and the water intake system.

[0061] Water-blocking baffle 16: Used to control the opening and closing of the middle layer water intake grid 10.

[0062] refer to Figures 2-4 The present invention also provides a method for extracting seawater from a specific water layer using the deep-sea water extraction device described above, wherein the arrow indicates the direction of seawater flow, and the water extraction method includes the following steps:

[0063] (1) Reference Figure 2 Shallow water intake operation: The water intake pipe lifting device 3 places the bottom water intake grid 12 of the movable water intake pipe 1 at the bottom of the transition chamber 4 and the seabed door 5. The seabed valve 6 is connected to a seawater pump. When the seabed valve 6 is opened and the seawater pump is working, the seawater flows through the bottom water intake grid 12, the seabed grid 13 and the side opening 14 of the seabed door, through the shallow water intake grid 11 of the movable water intake pipe 1 and the side opening 15 of the transition chamber, and finally flows into the transition chamber 4 and is transported to the ship's seawater system. This operation is used to extract seawater from the bottom of the ship, that is, the seawater at a depth of H1 (approximately 12 meters on the actual ship) from the waterline.

[0064] (2) Reference Figure 3Mid-level water intake operation: The position of the movable water intake pipe 1 is adjusted by the water intake pipe lifting device 3 so that the mid-level water intake grid 10 of the movable water intake pipe 1 corresponds to the side opening 15 of the transition tank. The seabed valve 6 is opened and the seawater pump is working. Seawater passes through the bottom water intake grid 12, flows through the mid-level water intake grid 10 of the movable water intake pipe 1 and the side opening 15 of the transition tank, and finally flows into the transition tank 4 and is delivered to the ship's seawater system. During the operation, the baffle 16 is in the upward position, keeping the mid-level water intake grid 10 in the open state. This operation is used to extract seawater at a depth of H2 (approximately 30 meters on the actual ship) from the waterline.

[0065] (3) Reference Figure 4 Deep water intake operation: The movable intake pipe 1 is adjusted in position via the intake pipe lifting device 3, aligning the deep water intake grid 9 of the movable intake pipe 1 with the side opening 15 of the transition tank. The seabed valve 6 is opened and the seawater pump operates. Seawater passes through the bottom intake grid 12, flows through the deep water intake grid 9 of the movable intake pipe 1 and the side opening 15 of the transition tank, and finally flows into the transition tank 4 and is delivered to the ship's seawater system. During the operation, the baffle 16 is in the downward position, keeping the middle intake grid 10 closed to prevent seawater from flowing in through the middle intake grid 10. This operation is used to extract seawater at a depth of H3 (approximately 50 meters on the actual ship) from the waterline.

[0066] refer to Figure 5 In this embodiment of the invention, the water-blocking baffle 16 is a cylindrical water-blocking structure, and the water-blocking baffle 16 is limited to the inside of the movable water intake pipe 1 by positioning bolts.

[0067] An upper limit slot 17 is provided above the middle water intake grid, and a lower limit slot 18 is provided below it. A water-blocking baffle 16 is located between the upper limit slot 17 and the lower limit slot 18. A downward positioning bolt 20 and an upward positioning bolt 21 are respectively connected from top to bottom on the movable water intake pipe 1 between the upper limit slot 17 and the lower limit slot 18.

[0068] The water intake device also includes a water-blocking baffle shifting pin 22, which is used to shift the water-blocking baffle 16. Each side of the water-blocking baffle 16 is provided with a water-blocking baffle groove 19 for shifting the water-blocking baffle 16, and the water-blocking baffle groove 19 is located within the grid hole range of the middle layer water intake grid. The water-blocking baffle shifting pin 22 and the water-blocking baffle groove 19 cooperate to shift the water-blocking baffle 16.

[0069] The displacement operation of the baffle 16 is performed on the inner side of the ship above the waterline, and the baffle groove 19 is always within the opening range of the mid-level intake grid, as referenced. Figure 6 (a)- Figure 6 (c) The operation method of the water-blocking baffle 16 includes the following steps:

[0070] Step 1: When it is necessary to take water from shallow or mid-level water bodies, tighten the upper positioning bolt 21 on the movable water intake pipe 1. The upper positioning bolt 21 limits the water-blocking baffle 16 to the upper position of the mid-level water intake grid 10. The upper positioning groove 17 prevents the water-blocking baffle 16 from moving upward, and the upper positioning bolt 21 prevents the water-blocking baffle 16 from moving downward. At this time, the water-blocking baffle 16 is in the initial state. In this state, the lower positioning bolt 20 is not installed or tightened.

[0071] Step 2: When it is necessary to extract water from the deep water body, pass the water-blocking baffle shifting pin 22 through the grid hole of the middle layer water intake grid 10 and insert it into the water-blocking baffle groove 19. Then loosen the upper position positioning bolt 21, and slowly lower the water-blocking baffle 16 to the lower limit slot 18 through the water-blocking baffle shifting pin 22. Then pull out the water-blocking baffle shifting pin 22, screw in the upper position positioning bolt 21, and fix the water-blocking baffle 16 in the downward position of the middle layer water intake grid 10.

[0072] Step 3: Reverse the above steps to achieve the upward movement of the water-blocking baffle 16.

[0073] This invention provides an apparatus and method for extracting large volumes of deep seawater at sea. By adjusting the height of the vertical movable water intake pipe 1 and the position of the baffle plate 16 at the central inlet, deep seawater is allowed to pass through the water intake pipe, the transition chamber 4 located at the bottom of the ship, the seabed valve 6, and related piping systems to the seawater pump suction port, thereby achieving deep seawater extraction. This invention provides a more efficient and controllable water extraction method for deep-sea aquaculture, allowing the water extraction depth to be adjusted according to aquaculture needs and seawater characteristics, thereby improving aquaculture production efficiency, reducing energy waste, mitigating environmental impact, and enhancing sustainability.

[0074] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with the described embodiment or example is included in at least one embodiment or example of the 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.

[0075] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of this invention, "a plurality of" means at least two, such as two or three, unless otherwise explicitly specified.

[0076] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, which is defined by the claims and their equivalents.

Claims

1. A deep-sea water intake device, installed on a ship or marine engineering equipment, characterized in that, It includes a movable water intake pipe, a water intake well, a water intake pipe lifting device, a transition chamber, a sea valve, a deep water intake grid, a middle water intake grid, a shallow water intake grid, a bottom water intake grid, side openings of the transition chamber, and a water-blocking baffle. The water intake well is located inside the ship or marine engineering equipment. The movable water intake pipe is inserted into the water intake well. The movable water intake pipe is provided with a deep water intake grid, a middle water intake grid, a shallow water intake grid and a bottom water intake grid from top to bottom. The water intake pipe lifting device is connected to the movable water intake pipe. The transition chamber is located at the bottom of the ship or marine equipment and the movable water intake pipe passes through the interior of the transition chamber. The transition chamber is connected to a sea valve and has a side opening for communicating with the movable water intake pipe. The water-blocking baffle is connected to the movable water intake pipe and is located above or below the middle water intake grid. The water-blocking baffle is used to control the opening and closing of the middle water intake grid.

2. The deep-sea water intake device according to claim 1, characterized in that, The water-blocking baffle is a cylindrical water-blocking structure, and the water-blocking baffle is confined inside the movable water intake pipe by positioning bolts.

3. A deep-sea water intake device according to claim 2, characterized in that, The middle layer water intake grid is provided with an upper limit slot above and a lower limit slot below. A water-blocking baffle is located between the upper limit slot and the lower limit slot. The movable water intake pipe between the upper limit slot and the lower limit slot is connected with a lower position positioning bolt and an upper position positioning bolt from top to bottom.

4. A deep-sea water intake device according to claim 3, characterized in that, The water intake device also includes a water-blocking baffle shifting pin, which is used to shift the water-blocking baffle. The side of the water-blocking baffle is provided with at least one water-blocking baffle groove for the water-blocking baffle shifting fulcrum, and the water-blocking baffle groove is located within the grid hole range of the middle layer water intake grid. The water-blocking baffle shifting pin and the water-blocking baffle groove cooperate to shift the water-blocking baffle.

5. A deep-sea water intake device according to claim 4, characterized in that, The water intake device also includes a seabed gate and a seabed grid. The bottom of the transition chamber is provided with a seabed gate that is connected to the movable water intake pipe, and a seabed grid is installed at the bottom of the seabed gate.

6. A deep-sea water intake device according to claim 5, characterized in that, The seagate is also provided with a side opening, which is located outside the movable water intake pipe and is connected to the movable water intake pipe.

7. A deep-sea water intake device according to claim 1, characterized in that, Multiple guide rings are provided between the water intake well and the movable water intake pipe. The guide rings are used to guide the movable water intake pipe when it slides between the water intake well and the water intake pipe.

8. A deep-sea water intake device according to claim 1, characterized in that, Multiple sealing rings are provided between the water intake well and the movable water intake pipe, and the sealing rings are used to seal the connection between the movable water intake pipe and the water intake well.

9. A method for extracting seawater from a specific water layer using the deep-sea water extraction device as described in claim 6, characterized in that, The water intake method includes the following steps: (1) Shallow water intake operation: The water intake pipe lifting device places the bottom water intake grid of the movable water intake pipe at the bottom of the transition chamber and the seabed door. The seabed valve is connected to a seawater pump. When the seabed valve is opened and the seawater pump is working, the seawater flows through the bottom water intake grid, the seabed grid and the side opening of the seabed door, through the shallow water intake grid of the movable water intake pipe and the side opening of the transition chamber, and finally flows into the transition chamber and is transported to the ship's seawater system. (2) Mid-level water intake operation: The position of the movable water intake pipe is adjusted by the water intake pipe lifting device so that the mid-level water intake grid of the movable water intake pipe corresponds to the side opening of the transition tank. The seabed valve is opened and the seawater pump is working. Seawater passes through the bottom water intake grid, flows through the mid-level water intake grid of the movable water intake pipe and the side opening of the transition tank, and finally flows into the transition tank and is delivered to the ship's seawater system. During the operation, the water baffle is in the upward position, keeping the mid-level water intake grid in the open state. (3) Deep water intake operation: The position of the movable water intake pipe is adjusted by the water intake pipe lifting device so that the deep water intake grid of the movable water intake pipe corresponds to the side opening of the transition tank. The seabed valve is opened and the seawater pump is working. Seawater passes through the bottom water intake grid, flows through the deep water intake grid of the movable water intake pipe and the side opening of the transition tank, and finally flows into the transition tank and is transported to the ship's seawater system. During the operation, the water baffle is in the downward position, keeping the middle water intake grid in the closed state to prevent seawater from flowing in from the middle water intake grid.

10. A method for extracting seawater from a specific water layer using a deep-sea water intake device according to claim 9, characterized in that, The displacement operation of the water-blocking baffle is performed on the inside of the ship above the waterline, and the groove of the water-blocking baffle is always within the opening range of the middle water intake grid. The operation method of the water-blocking baffle includes the following steps: Step 1: When it is necessary to take water from shallow or mid-layer water, tighten the upper positioning bolt on the movable water intake pipe. The upper positioning bolt limits the water-blocking baffle to the upper position of the mid-layer water intake grid. The upper positioning groove prevents the water-blocking baffle from moving upward, and the upper positioning bolt prevents the water-blocking baffle from moving downward. At this time, the water-blocking baffle is in its initial state. In this state, the lower positioning bolt is not installed or tightened. Step 2: When it is necessary to extract water from deep water bodies, pass the water-blocking baffle displacement pin through the grid hole of the middle layer water intake grid and insert it into the groove of the water-blocking baffle. Then loosen the upper position positioning bolt, and slowly lower the water-blocking baffle to the lower limit slot through the water-blocking baffle displacement pin. Then remove the water-blocking baffle displacement pin, screw in the lower position positioning bolt, and fix the water-blocking baffle in the lower position of the middle layer water intake grid.

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