Marine organism cleaning floating ship

Abstract

The invention relates to the technical field of ocean engineering equipment, in particular to a marine organism cleaning floating ship used at a cold source water intake of a nuclear power station, which comprises a buoyancy platform, four hydraulic winches are mounted and connected on the buoyancy platform and are distributed at the left upper corner, the right upper corner, the left lower corner and the right lower corner of the buoyancy platform; the buoyancy platform is provided with a cleaning suction device used for cleaning marine organisms on the intercepting net, the buoyancy platform is further connected with a discharging pipeline with a downward outlet, the cleaning suction device is provided with a suction pipe, and the flow of the suction pipe can be changed. The cleaning suction device is further provided with a cleaning brush capable of washing marine organisms on the intercepting net, and the cleaning effect is better optimized.

Description

Technical Field

[0001] This invention relates to the field of marine engineering equipment technology, and in particular to a floating vessel for cleaning marine organisms at the cold source intake of a nuclear power plant. Background Technology

[0002] Most of my country's nuclear power plants are located in coastal areas. These plants typically use seawater circulation for direct cooling to ensure water intake safety. However, due to the presence of large numbers of marine organisms, incidents of marine organisms and floating objects entering the cold source inlet frequently occur at nuclear power plants, causing blockages in the cold source system.

[0003] Currently, nuclear power plants generally construct an interception system by using interception nets in the sea area where the water intake is located. The interception system's planar interception nets and net bags are made of polymer materials. The power plant uses the traditional method of manually transporting the net bags by fishing boats at sea, and the planar interception nets are cleaned by divers using high-pressure water guns. This cleaning method is inefficient and has high operational risks, which will directly affect the safe operation of the nuclear power plant.

[0004] There are also many newly designed cleaning vessels or platforms in the existing technology, and many of them have been patented.

[0005] For example, Chinese Patent Application No. 202410142722.4 discloses a cleaning platform for a cold source interception net in a nuclear power plant, which includes a hull. The hull is equipped with a lifting device for lifting a net bag. The hull is also equipped with a suction mechanism and a collection mechanism. The suction mechanism is used to suction the garbage in the net bag, and the collection mechanism is used to collect the garbage suctioned by the suction mechanism. The collection mechanism includes a net bag with an opening at the top. The left side of the hull is recessed to form a placement groove, which extends to the top and bottom of the hull.

[0006] For example, Chinese Patent Application No. 201910284946.8 discloses a vessel for cleaning marine plankton, which includes a cleaning vessel body, a plankton waste storage box, a plankton cleaning device, a ship clamp steel plate, a feed hole, a winding roller, a first motor, a feed pipe, a guardrail, a hydraulic telescopic rod, a fixing plate, an electric telescopic rod, a crushing box, a centrifugal pump, a gearbox, a second motor, a suction port, a crushing roller, and a bearing seat.

[0007] For example, Chinese Patent Application No. 202510405032.8 discloses a motorized floating platform for cleaning marine organisms. This platform integrates a floating platform, a crane, a net cleaning device, a flat net cleaning device, a garbage collection net, and a power unit. The net cleaning device and the flat net cleaning device are respectively designed for cleaning debris from the interception net and the flat interception net. They use a suction method to quickly and effectively transport debris to the garbage collection net, facilitating subsequent unified processing and transportation.

[0008] Existing technologies have a good ability to clean marine life and floating debris, but the cleaning effect is still not good enough, and problems such as clogging are easy to occur. In addition, in order to improve the suction power, the power consumption is high, which is not energy-saving and environmentally friendly. Summary of the Invention

[0009] The purpose of this invention is to provide a floating vessel for cleaning marine organisms with a more optimized cleaning effect.

[0010] The above-mentioned objective of the present invention is achieved through the following technical solution: a floating vessel for cleaning marine organisms, comprising a buoyancy platform, wherein four hydraulic winches are installed and connected on the buoyancy platform and distributed at four positions: the upper left corner, the upper right corner, the lower left corner, and the lower right corner of the buoyancy platform; a cleaning suction device for cleaning marine organisms on an interception net is provided on the buoyancy platform; a discharge pipe with a downward outlet is also connected to the buoyancy platform; the cleaning suction device has a suction pipe with variable flow rate; and the cleaning suction device also has a cleaning brush for washing marine organisms on the interception net.

[0011] As a preferred embodiment of the present invention, the cleaning suction device includes a robotic arm situated on a buoyancy platform, the suction tube being connected to the robotic arm and its position being changed by the movement of the robotic arm, and the cleaning brush being mounted on the robotic arm.

[0012] As a preferred embodiment of the present invention, a positioning support frame is fixed to the end of the robotic arm, and a pipe connection flange for connecting the inlet portion of the suction tube is fixed to the rear side of the positioning support frame. A flow control mechanism capable of changing the flow rate entering the inlet portion of the suction tube is provided inside the positioning support frame at a position in front of the pipe connection flange.

[0013] As a preferred embodiment of the present invention, the flow control mechanism includes a plurality of circumferentially distributed flow control modules that can expand and contract radially. All the flow control modules surround and form a central expansion and contraction entry zone whose radial dimensions can change. The maximum size of the central expansion and contraction entry zone is less than or equal to the cross-sectional size of the suction tube inlet.

[0014] As a preferred embodiment of the present invention, the flow control module has four or more discrete borders that can be assembled into a rectangular outer circle and a circular inner circle. A telescopic spring is provided between two circumferentially adjacent flow control modules, and spring positioning grooves are respectively provided on the two adjacent flow control modules for the two ends of the telescopic spring to be inserted and positioned.

[0015] As a preferred embodiment of the present invention, the flow control module has eight, with at least the uppermost flow control module connected to a telescopic power device, which allows the flow control module to move radially telescopically.

[0016] As a preferred embodiment of the present invention, a blade for cutting marine organisms is mounted and connected to the front side of the flow control module, the blade having an arc-shaped cutting edge that extends radially inward beyond the flow control module 5.

[0017] As a preferred embodiment of the present invention, the cleaning brush is installed and connected at the front position of the positioning support frame, and the axis of the cleaning brush is in the left-right direction.

[0018] As a preferred embodiment of the present invention, a front limiting baffle located in front of the flow control module and a rear limiting baffle located behind the flow control module are installed and connected within the positioning support frame.

[0019] As a preferred embodiment of the present invention, the surfaces of the front limiting baffle and the rear limiting baffle are both in the front-rear direction. A front mounting plate perpendicular to the front limiting baffle and used for installation and fixation with the positioning support frame is integrally connected to the front limiting baffle. A rear mounting plate perpendicular to the rear limiting baffle and used for installation and fixation with the positioning support frame is integrally connected to the rear limiting baffle.

[0020] The beneficial effects of this invention are: while maintaining the lateral stability of the vessel, it can float vertically in an orderly manner, which helps the cleaning equipment to better clean the interception net and collect marine organisms and floating objects; The cleaning is more thorough and effective, energy consumption is effectively controlled, and the potential energy of the ship itself, seawater and the cleaned material is used to assist in the cleaning, making it more energy-efficient and environmentally friendly. It is less likely to cause blockages or other problems, can work smoothly for a long time, and reduces the cost of manual intervention and the safety risks of personnel working at sea. It can have a great effect on economic and social development. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the marine organism cleaning floating vessel in the embodiment; Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure from a frontal perspective; Figure 3 yes Figure 1 A three-dimensional structural diagram of the central positioning support frame and its internal structure; Figure 4 yes Figure 3 A schematic diagram of the three-dimensional structure in its disassembled state; Figure 5 yes Figure 4 A schematic diagram of the three-dimensional structure in a further disassembled state; Figure 6 yes Figure 5 A schematic diagram of the three-dimensional structure in a further disassembled state; Figure 7 yes Figure 6 A three-dimensional structural diagram from a rear view; Figure 8 yes Figure 3 A three-dimensional structural diagram of the flow control mechanism in its open state; Figure 9 yes Figure 8 A schematic diagram of the three-dimensional structure after the telescopic spring is removed; Figure 10 yes Figure 8 A three-dimensional structural diagram of the flow control mechanism in its retracted state. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0024] Examples, such as Figure 1-10As shown, a floating vessel for marine organism cleaning includes a buoyancy platform 1. The buoyancy platform 1 can be assembled from existing buoyancy chambers or floating rafts, forming a semi-submersible operational state. Furthermore, four hydraulic winches 11 are installed and connected to the buoyancy platform 1, distributed at the upper left, upper right, lower left, and lower right corners. The hull of each hydraulic winch 11 is fixed to the buoyancy platform 1 using existing fixing methods. A traction cable is wound around each hydraulic winch 11, with its free end connected to an anchor. When docked, the hydraulic winch 11 releases the cable to sink the anchor to the seabed for positioning. When movement is required, the anchor is raised. After the vessel moves to the desired marine area, the anchor is lowered again. Through the design of four hydraulic winches 11, if all four positions are anchored, the vessel's horizontal position is relatively stable, being stably pulled. That is, its horizontal state is relatively stable. Furthermore, the buoyancy platform 1 is equipped with a cleaning and suction device for removing marine organisms from the interception net. This device extracts the marine organisms through suction to clean the net. It also removes other marine debris, such as floating objects. Additionally, the buoyancy platform 1 is connected to a downward-facing discharge pipe 12. The discharge pipe 12 can discharge treated seawater containing crushed marine debris, or simply treated seawater, depending on the specific post-treatment process. Importantly, the cleaning and suction device has a suction pipe 31 with variable flow rate. The downward-facing outlet of the discharge pipe 12 creates an upward counterforce as the discharge power flows downwards. The suction device extracts seawater containing marine debris through the suction pipe 31, altering the overall weight of the vessel. In existing technologies, discharge structures typically have a horizontal outlet, and the inflow and outflow rates are generally controlled to maintain vessel stability, both horizontally and vertically.

[0025] However, this embodiment changes this approach. With four hydraulic winches 11, the ship exhibits excellent horizontal stability. In the vertical direction, it is designed for orderly up-and-down floating. This is achieved through the downward-facing opening of the discharge pipe 12 and the variable flow rate design of the suction pipe 31. This allows for effective control of the difference between the suction volume of the suction pipe 31 and the discharge volume of the discharge pipe 12. For example, while the discharge volume of the discharge pipe 12 remains constant, the continuous cyclical variation of the suction volume of the suction pipe 31 (e.g., increasing and decreasing in cycles) causes the overall weight of the ship to increase or decrease cyclically, resulting in the ship's overall up-and-down movement. This effectively assists the cleaning device in its cleaning process. Furthermore, the cleaning suction device also includes cleaning brushes 32 that can scrub marine organisms off the interception net. The orderly up-and-down floating of the ship drives the cleaning brushes 32 to remove marine debris from the interception net, facilitating suction. It also scrubs the surface of the cleaned interception net, resulting in a smoother and more thorough surface treatment. This also increases the difficulty of subsequent marine debris adhesion, reducing the cleaning cycle. The up-and-down floating mechanism utilizes the potential energy difference between its suction and discharge, as well as the kinetic energy of the discharge itself, without incurring additional energy expenditure. Moreover, the ship's overall up-and-down inertial floating provides sufficient cleaning capability. Compared to cleaning via robotic arms that move up and down directly, this method allows for a higher frequency and better results. Robotic arms, on the other hand, have a relatively low frequency of movement, consume electrical energy, have relatively weak driving force, and are easily entangled by seaweed and other debris.

[0026] In a preferred embodiment, the cleaning and suction device includes a robotic arm 33 mounted on a buoyancy platform 1. The robotic arm 33 can be an existing robotic arm or crane. The body or main body of the robotic arm can be directly placed on the buoyancy platform 1 or can move on the buoyancy platform 1 without being fixed. This allows the robot or crane to move to the optimal position before extending the robotic arm into the sea area. Furthermore, the suction pipe 31 is connected to the robotic arm 33 and its position is changed by the movement of the robotic arm 33. The robotic arm 33 is also equipped with cleaning brushes 32, enabling the robotic arm to drive the suction pipe 31 to perform suction and brushing operations at different locations on the interception net.

[0027] In addition, the inlet of the suction pipe 31 is aligned with the interception net, while the outlet is connected to the inlet of the water pump installed on the buoyancy platform 1. The buoyancy platform 1 generally requires the design of an equipment room, which will contain various commonly used power generation equipment, lighting equipment, water pumps, etc. The output end of the water pump can be connected to the input end of a main water pump. Since one or more cleaning suction devices can be installed, the main water pump acts as a secondary water pump to introduce seawater containing marine debris into the input of each water pump. Then, the output end of the water pump is directly connected to the discharge pipe 12. If there is a main water pump, its output end is directly connected to the discharge pipe 12. As one embodiment, a debris collection net can be installed on the underside of the buoyancy platform 1 to collect the debris in the seawater containing debris discharged from the discharge pipe 12. Finally, these debris are sent to the shore for treatment. Another implementation method is to install a crushing mechanism on the discharge pipe 12 to crush the marine debris. An existing crushing mechanism can be used to crush the marine debris and then discharge it directly into the sea. The outlet section of the discharge pipe 12 is preferably made of rigid metal, such as stainless steel, and extends vertically and is fixed to the buoyancy platform 1 using existing methods. Alternatively, multiple discharge pipes 12 can be used, for example, five. Four of these five discharge pipes 12 have their outlet sections located at the corners of the buoyancy platform 1, and one is located in the center of the buoyancy platform 1, all fixed at a lower position. The output of the water pump or main water pump is connected to each branch discharge pipe 12 via a main outlet pipe. Each discharge pipe 12 can be equipped with a solenoid valve for flow control. This allows for more precise control of the ship's floating amplitude and frequency.

[0028] Preferably, the end of the robotic arm 33 is fixed with a positioning support frame 4. The positioning support frame 4 can be a stainless steel rectangular frame structure. The end of the robotic arm 33 has a perforated mounting plate or mounting column structure and can be fixed to the positioning support frame 4 by existing disassembly and assembly methods, such as fixing the two with bolts and nuts.

[0029] Furthermore, a pipe connection flange 41 for connecting the inlet portion of the suction pipe 31 is fixed to the rear side of the positioning support frame 4. The pipe connection flange 41 can be fixed to the rear side of the positioning support frame 4 using existing fixing methods, such as a detachable method or welding. A pipe flange is also fixedly installed on the outer periphery of the suction pipe 31 near the outlet using existing methods. The pipe flange is then mated with the pipe connection flange 41 and connected with bolts and nuts. Of course, the positioning support frame 4 can also be connected to the outlet section of the suction pipe 31 using other methods, such as clamp structures.

[0030] Furthermore, a flow control mechanism is installed within the positioning support frame 4, located in front of the pipe connection flange 41, to change the flow rate entering the inlet of the suction pipe 31. The flow control mechanism is aligned and close to the inlet of the suction pipe 31. The suction pipe 31 is preferably designed as a flexible hose, and a hose reel can be installed on the platform for orderly winding and unwinding.

[0031] Preferably, the flow control mechanism includes multiple circumferentially distributed flow control modules 5 that can expand and contract radially. Here, radial and circumferential refer to the direction of the inlet section of the suction pipe 31. The flow control modules 5 can be made of stainless steel blocks; however, in this embodiment, the stainless steel structure can also be made of other corrosion-resistant and rust-resistant metals or alloys. All the flow control modules 5 surround and form a central expandable and contractile inlet area 50 with a variable radial dimension. The maximum size of the central expandable and contractile inlet area 50 is less than or equal to the cross-sectional area of ​​the inlet of the suction pipe 31. That is, even when all the flow control modules 5 are fully open, the area of ​​the central expandable and contractile inlet area 50 is still less than or equal to the cross-sectional area of ​​the inlet of the suction pipe 31. Then, by the flow control modules 5 contracting radially inward, the area of ​​the central expandable and contractile inlet area 50 is reduced, thereby reducing the inlet flow rate. This is under the condition that the suction force or power consumption remains unchanged. Of course, this suction force only needs to be sufficient to effectively absorb marine debris. In other words, a radially expandable structure is designed to change the size of the inlet flow area, thereby changing the flow rate entering the suction pipe 31.

[0032] Furthermore, the flow control module 5 has four or more discrete borders that can be assembled into a rectangular outer circle and a circular inner circle. The inner circle, which is the structure of the central expansion and contraction zone 50 at its minimum state, expands when the module expands. A telescopic spring 51 is provided between two circumferentially adjacent flow control modules 5. The telescopic springs 51 are distributed circumferentially and extend along the circumferential direction. Each adjacent flow control module 5 has a spring positioning groove 510 for inserting and positioning the two ends of the telescopic springs 51. Multiple telescopic springs 51 can be provided between adjacent flow control modules 5 to improve stability. The expansion and contraction are achieved by radially moving the flow control module 5 using an external driving force. The telescopic springs 51 ensure sufficient support and stability during the expansion and contraction process, while also providing good cushioning to reduce mechanical damage.

[0033] Specifically, the flow control module 5 has eight sections, with at least the uppermost section connected to a telescopic power device 55, allowing the flow control module 5 to move radially. The flow control module 5 consists of eight sections: upper left, upper, upper right, right, lower right, lower, lower left, and left. These eight sections can be formed by dividing a complete frame structure. The telescopic power device 55 can be a hydraulic cylinder. The cylinder body is fixed to the periphery of the positioning support frame 4. The piston rod of the hydraulic cylinder passes radially through the positioning support frame 4 and extends into the positioning support frame 4. The end of the piston rod can directly abut against the radial outer part of the corresponding flow control module 5 or be inserted into the radial outer part of the corresponding flow control module 5. The insertion structure requires a slot to be opened on the radial outer part of the flow control module 5. Of course, the end of the piston rod can also be fixedly connected to the radial outer part of the corresponding flow control module 5 by a detachable method such as a pin. Here, it is not necessary for each flow control module 5 to be equipped with a telescopic power device 55. It is preferable that the four flow control modules 5 (upper, lower, left, and right) are equipped with telescopic power devices 55. For example, if they are all equipped with hydraulic cylinders, then the four hydraulic cylinders are installed and connected at the four positions of the positioning support frame 4 (upper, lower, left, and right). The oil pipes of these four hydraulic cylinders can be connected to the hydraulic valve station set on the buoyancy platform 1. The extension and retraction state of the hydraulic cylinders is controlled by controlling the flow of hydraulic oil in the hydraulic valve station through an automatic controller. These can all use existing equipment and controls, which will not be elaborated here. When the piston rod of the hydraulic cylinder extends, all the flow control modules 5 retract radially inward together, the central telescopic change inlet area 50 shrinks, and the inlet volume decreases. When the piston rod of the hydraulic cylinder retracts, the flow control modules 5 retract radially outward together, the central telescopic change inlet area 50 expands, and the inlet volume increases. Furthermore, the outer part of the flow control module 5, which is not connected to the telescopic power device 55, and the inner part of the positioning support frame 4 can be connected by an elastic structure such as a spring to ensure that the flow control module 5 does not detach from the entire frame.

[0034] In one embodiment, a blade 52 for cutting marine debris is installed on the front side of the flow control module 5. The blade 52 has an arc-shaped cutting edge that extends radially inward beyond the flow control module 5. The blade 52 can be fixedly connected to the front part of the flow control module 5 by bolts penetrating it, or other fixing methods can be used. This allows the flow control module 5 to extend and retract during its movement, changing the amount of debris entering the module and enabling it to cut marine debris. This improves cleaning efficiency, making it easier for the debris to detach from the interception net after processing. Furthermore, the smaller size after cutting facilitates suction and reduces the risk of blockages, increased power consumption, or malfunctions. The blade 52 also forms discrete circular cutting edges in the circumferential direction. To achieve effective cutting, the blade needs to extend radially inward beyond the flow control module 5 by a certain distance. This extension doesn't need to be large, generally exceeding 1 cm is sufficient, but can be adjusted as needed, depending on the specific type of marine debris.

[0035] Preferably, the cleaning brush 32 is installed and connected to the front position of the positioning support frame 4. The axis of the cleaning brush 32 is in the left-right direction. The cleaning brush 32 can be an existing rolling non-powered brush, because the ship in this embodiment can float up and down autonomously, which can drive the brush to operate. Not only does it not require power, but it can also effectively clean the interception net. The two ends of the cleaning brush 32 can be mounted and connected to the positioning support frame 4, or it can be rotatably connected to the positioning support frame 4 in other ways.

[0036] Furthermore, a front limiting baffle 61 located in front of the flow control module 5 and a rear limiting baffle 62 located behind the flow control module 5 are installed and connected within the positioning support frame 4. The front limiting baffle 61 and the rear limiting baffle 62 are made of wear-resistant material and are both frame-shaped panels. They provide front and rear obstruction around the flow control module 5, primarily to prevent movement of the flow control module 5 in the front-to-back direction. The central area is also empty, so as not to interfere with seawater suction or blade operation. The surfaces of the front limiting baffle 61 and the rear limiting baffle 62 are in the front-to-back direction.

[0037] Preferably, the surfaces of the front limiting baffle 61 and the rear limiting baffle 62 are both in the front-rear direction. A front mounting plate 611, perpendicular to the front limiting baffle 61 and used for installation and fixation with the positioning support frame 4, is integrally connected to the front limiting baffle 61. A rear mounting plate 622, perpendicular to the rear limiting baffle 62 and used for installation and fixation with the positioning support frame 4, is integrally connected to the rear limiting baffle 62. The front mounting plate 611 can be located around the periphery of the front limiting baffle 61, and the rear mounting plate 622 can be located around the periphery of the rear limiting baffle 62. The mounting plates are fixedly connected to the inner wall of the positioning support frame 4 by means of bolts or similar methods.

[0038] Furthermore, the aforementioned electrical control equipment, such as pumps, hydraulic cylinders, robotic arms, solenoid valves, and hydraulic winches, can all be uniformly controlled through existing automatic controllers. Additionally, the buoyancy platform 1 can be equipped with existing propulsion devices such as thrusters, which can also be controlled by an automatic controller. This automatic controller can be installed in the equipment room and communicate wirelessly with a ground-based terminal system for unified management by a ground-based workstation system, significantly reducing manual operation and enhancing safety and reliability. The buoyancy platform can also be equipped with sensors for flow rate and gravity detection, enabling more precise control and further enhancing the controllability of its active lifting and floating mechanism.

[0039] In operation, the vessel is simply moved to the designated location, then the hydraulic winch is anchored and positioned. A robotic arm then drives the cleaning and suction device to clean and suction the interception net. Simultaneously, the blades 52 extend and retract, and the flow control module 5 adjusts the intake flow, allowing the vessel to float up and down in an orderly manner for better cleaning. Energy consumption is effectively controlled, resulting in better cleaning performance, a lower failure rate, reduced manual intervention, and increased safety, reliability, and economic efficiency. This structure is particularly suitable for vertical, planar interception nets, with excellent results. While not as effective for horizontal interception nets as for planar nets, the up-and-down floating mechanism still significantly aids in cleaning. Furthermore, the ability to contract and cut allows for pre-treatment of marine debris, facilitating cleaning and equipment operation. Compared to existing technologies, this approach offers superior performance.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A marine biofouling floating vessel, characterized in that, The utility model provides a floating platform (1) is provided with four hydraulic winches (11) on the upper left corner, the upper right corner, the lower left corner and the lower right corner of the floating platform (1), and the floating platform (1) is provided with a cleaning suction device for cleaning the marine organisms on the intercepting net, and the floating platform (1) is further connected with a downwardly-outlet discharge pipeline (12), the cleaning suction device has a suction pipe (31) with variable flow, and the cleaning suction device further has a cleaning brush (32) for washing the marine organisms on the intercepting net.

2. A marine debris removal floating vessel according to claim 1, wherein, The cleaning suction device comprises a mechanical arm (33) arranged on the floating platform (1), the suction pipe (31) is connected to the mechanical arm (33) and moves along with the position change of the mechanical arm (33), and the mechanical arm (33) is further provided with the cleaning brush (32).

3. A marine debris removal floating vessel according to claim 2, wherein, The end of the mechanical arm (33) is fixedly provided with a positioning support frame (4), the rear side of the positioning support frame (4) is fixedly provided with a pipeline connecting flange (41) for connecting the inlet part of the suction pipe (31), and the positioning support frame (4) is provided with a flow control mechanism capable of changing the flow entering the inlet part of the suction pipe (31) at a position in front of the pipeline connecting flange (41).

4. A marine debris removal floating vessel according to claim 3, wherein, The flow control mechanism comprises a plurality of flow control modules (5) distributed in the circumferential direction and capable of expanding and contracting in the radial direction, all the flow control modules (5) surround a central expansion and contraction change area (50) with a variable radial dimension, and the maximum size of the central expansion and contraction change area (50) is less than or equal to the cross-sectional size of the inlet of the suction pipe (31).

5. A marine debris removal floating vessel according to claim 4, wherein, The flow control module (5) has four or more than four pieces and has a discrete frame shape with a rectangular outer circle and a circular inner circle, expansion and contraction springs (51) are arranged between two circumferentially adjacent flow control modules (5), and spring positioning grooves (510) are respectively arranged on the two adjacent flow control modules (5) and used for inserting and positioning the two ends of the expansion and contraction spring (51).

6. A marine debris removal floating vessel according to claim 5, wherein, The flow control module (5) has eight pieces, and at least the upper flow control modules (5) are connected with expansion and contraction power devices (55) and are capable of expanding and contracting in the radial direction.

7. A marine debris removal floating vessel as claimed in claim 4, wherein, The front side of the flow control module (5) is provided with a blade (52) for shearing the marine organisms, the blade edge of the blade (52) is in the form of a circular arc and protrudes inward in the radial direction beyond the flow control module (5).

8. A marine debris removal floating vessel as claimed in claim 4, wherein, The front side of the flow control module (5) is provided with a blade (52) for shearing the marine organisms, the blade edge of the blade (52) is in the form of a circular arc and protrudes inward in the radial direction beyond the flow control module (5).

9. A marine debris removal floating vessel as claimed in claim 4, wherein, The front side of the flow control module (5) is provided with a blade (52) for shearing the marine organisms, the blade edge of the blade (52) is in the form of a circular arc and protrudes inward in the radial direction beyond the flow control module (5). The front side of the flow control module (5) is provided with a blade (52) for shearing the marine organisms, the blade edge of the blade (52) is in the form of a circular arc and protrudes inward in the radial direction beyond the flow control module (5).

10. A marine debris removal floating vessel according to claim 9, wherein, The plate surface of the front limiting baffle (61) and the rear limiting baffle (62) is in the front-rear direction, the front limiting baffle (61) is integrally connected with a front mounting plate (611) perpendicular to the front limiting baffle (61) and used for mounting and fixing with the positioning support frame (4), and the rear limiting baffle (62) is integrally connected with a rear mounting plate (622) perpendicular to the rear limiting baffle (62) and used for mounting and fixing with the positioning support frame (4).

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