Marine sundry suction platform and system for cold source water intake of nuclear power station

Abstract

The invention relates to the technical field of ocean engineering equipment, in particular to an ocean sundry suction platform and system for a cold source water intake of a nuclear power station, which comprises a left balance buoyancy cabin, a right balance buoyancy cabin and a middle main cabin connected between the left balance buoyancy cabin and the right balance buoyancy cabin, the middle main cabin is provided with a left suction pipeline and a right suction pipeline which are used for sucking ocean sundries, the left suction pipeline is connected to a left suction device, the right suction pipeline is connected to a right suction device, and the left suction device and the right suction device are both fixedly installed on the middle main cabin; both the left balance buoyancy compartment and the right balance buoyancy compartment can actively float and sink, and the marine debris treatment capacity is high and safety is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of marine engineering equipment, and in particular to a marine debris suction platform and system used at a cold source water intake of a nuclear power plant. Background Art

[0002] All operating nuclear power plants in China are coastal power plants that utilize a once-through cooling water system, using seawater to cool equipment. Seawater, abundant and more readily available than freshwater, can meet the enormous water demands of nuclear power plants' once-through cooling water systems. However, in recent years, due to global warming and the El Niño phenomenon, eutrophication in coastal waters has intensified. Blooms of marine organisms, such as algae and hair shrimp, have frequently caused blockages at nuclear power plant cooling water intakes, pipes, or within the plant itself, seriously threatening its safe operation. To address these issues, nuclear power plants currently employ interception nets at water intakes. Once these organisms enter the nets, they accumulate under the impact of currents. Workers then clear the nets using fishing boats. While this method offers lower maintenance requirements, manual cleaning is inefficient and cannot be performed continuously. Furthermore, offshore operations carry significant safety risks and are susceptible to weather conditions.

[0003] It can be seen that the main task of pollution interception at the water intake is to prevent debris in the ocean, such as seaweed, garbage, plankton, etc. from entering the cooling system. Once these debris enter, they will reduce the cooling efficiency and even affect the safe operation of the nuclear power plant. Because the volume of these debris is relatively large, it is easy to cause blockage.

[0004] Of course, in the existing technology, there are also many devices for handling marine debris at interception nets, some of which are also patented technologies.

[0005] For example, Chinese patent application number 202421094839.1 discloses a new suction device for marine life that causes harm at the water intake of a nuclear power cooling source. The new suction device for marine life that causes harm at the water intake of a nuclear power cooling source comprises a floating raft, a lifting mechanism is provided on the floating raft, a reamer is provided in the lifting mechanism, a net bag fixing mechanism is provided on one side of the lifting mechanism, a net bag is fixedly mounted on the net bag fixing mechanism, a delivery pump is fixedly mounted on the top of the floating raft, one end of the delivery pump is connected to the lifting mechanism, and the other end of the delivery pump is connected to a solid-liquid separation compression mechanism.

[0006] Although these existing patented technologies can handle marine debris, their ability to move up and down is limited, the range of movement is not large enough, and their adjustability is also limited. When used in some large nuclear power plants or in sea areas with strong winds and waves, their applicability and stability need to be improved. In addition, their ability to remove marine debris is limited, and their safety of use also needs to be improved. Summary of the Invention

[0007] The purpose of the present invention is to provide a marine debris suction platform and system for use at a cold source water intake of a nuclear power plant, which has strong and safe marine debris handling capability.

[0008] The above-mentioned object of the present invention is achieved through the following technical scheme: A marine debris suction platform used at the cold source water intake of a nuclear power plant, comprising a left balanced buoyancy tank, a right balanced buoyancy tank and an intermediate main cabin connected between the left balanced buoyancy tank and the right balanced buoyancy tank, the intermediate main cabin being equipped with a left suction pipe and a right suction pipe for sucking marine debris, the left suction pipe being connected to a left suction device, the right suction pipe being connected to a right suction device, the left suction device and the right suction device being both mounted and fixed on the intermediate main cabin, and the left balanced buoyancy tank and the right balanced buoyancy tank being able to actively float up and sink.

[0009] As a preferred embodiment of the present invention, the middle main cabin includes a bottom support cabin and a main cabin outer cover installed and fixed on the upper side of the bottom support cabin. The left and right sides of the bottom support cabin are respectively detachably and fixedly connected to the left balance buoyancy cabin and the right balance buoyancy cabin. The left suction device and the right suction device are installed on the upper side of the bottom support cabin and are located in the main cabin outer cover. The left suction pipe and the right suction pipe are installed on the upper side of the bottom support cabin and the inlet sections extend out of the main cabin outer cover.

[0010] As a preferred embodiment of the present invention, a plurality of left connecting plates are fixed on the upper side and the right side of the left balancing buoyancy tank, a plurality of right connecting plates are fixed on the upper side and the left side of the right balancing buoyancy tank, a plurality of left middle connecting plates for connecting with the left connecting plates are fixed on the left side of the bottom support tank, a plurality of right middle connecting plates for connecting with the right connecting plates are fixed on the right side of the bottom support tank, and the left connecting plate, the right connecting plate, the left middle connecting plate and the right middle connecting plate are all provided with connecting holes for bolts to pass through.

[0011] As a preferred embodiment of the present invention, a discharge pipe connected to the left suction device and the right suction device is also installed on the upper side of the bottom support cabin, and the outlet section of the discharge pipe extends out of the outer cover of the main cabin. The left suction pipe has at least three inlets and at least one inlet facing forward, at least one inlet facing left, and at least one inlet facing backward. The right suction pipe has at least three inlets and at least one inlet facing forward, at least one inlet facing right, and at least one inlet facing backward. The left suction pipe with at least one inlet facing left serves as a direct suction pipe, the right suction pipe with at least one inlet facing right serves as a direct suction pipe, the left suction pipe with at least one inlet facing forward and the right suction pipe with at least one inlet facing backward both serve as direct suction pipes, or the left suction pipe with at least one inlet facing backward and the right suction pipe with at least one inlet facing forward both serve as direct suction pipes.

[0012] As a preferred embodiment of the present invention, a crushing mechanism for crushing marine debris is provided on the pipe section of the discharge pipe, and a solid-liquid separation and compression mechanism for processing the mixture processed by the crushing mechanism is also provided on the pipe section of the discharge pipe.

[0013] As a preferred embodiment of the present invention, a movable mechanical crane arm is installed and connected to the bottom support cabin, and a pulling head for pulling is installed and connected to the mechanical crane arm, and the pulling head can pull the anti-pollution interception net laid at the cold source water intake of the nuclear power plant. The mechanical crane arm is also installed and connected to a movable arm that can move relative to it, and the movable arm is installed and connected to a cleaning device that can remove marine debris attached to the anti-pollution interception net.

[0014] As a preferred embodiment of the present invention, the cleaning device includes a rotatable rotating rod and an elastic hook connected to the outer periphery of the rotating rod, and the elastic hook includes a main hook body in a C-shaped arc shape in the middle and a left torsion spring and a right torsion spring integrally connected to the two feet of the main hook body.

[0015] As a preferred embodiment of the present invention, a controller, a diesel generator set, a wireless communication device, and a fan are also installed on the bottom support cabin, and the diesel generator set, the wireless communication device, and the fan can all be automatically controlled by the controller.

[0016] A marine debris suction system for use at a cold source water intake of a nuclear power plant comprises the aforementioned marine debris suction platform for use at a cold source water intake of a nuclear power plant, and also comprises an anti-fouling interception net, wherein the upper side of the anti-fouling interception net is fixed to a suspension beam, a hanging pile for a pulling head to hang on is fixed to the upper side of the suspension beam, and a counterweight block is connected to the lower side of the anti-fouling interception net.

[0017] As a preferred embodiment of the present invention, the pulling head has a magnetic structure therein, and the anti-fouling interception net is a ferromagnetic wire rope net.

[0018] Beneficial effects of the present invention: The present invention can make the suction platform float up and down, thereby increasing the processing range, and having better stability and being safer to use in harsh environments; It has stronger cleaning capabilities and can more thoroughly handle marine debris on and near the interception net. It also has better balancing capabilities, making the operation more stable and reliable. With a higher degree of automation and less human intervention, safety is greatly enhanced; It reduces labor costs and the risks of personnel operating at sea, and can operate in environments far from the shore. It can quickly clean up and continue operations in response to the seasonal and sudden outbreaks of marine organisms, and has good economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 11 is a schematic diagram of the three-dimensional structure of the marine debris suction platform in the disassembled state according to Example 1; Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure from the front side perspective; Figure 3 yes Figure 1 Schematic diagram of the three-dimensional structure from the bottom perspective; Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure after removing the main cabin cover of the middle structure; Figure 5 yes Figure 4 Schematic diagram of the three-dimensional structure after the middle structure is connected; Figure 6 yes Figure 1 Schematic diagram of the three-dimensional structure after the middle structure is assembled and connected; Figure 7 yes Figure 6 Schematic diagram of the three-dimensional structure after further optimization of the middle structure; Figure 8 yes Figure 7 Schematic diagram of the three-dimensional structure after further optimization of the structure on the middle rotating rod; Figure 9 yes Figure 8 Schematic diagram of the three-dimensional structure after removing an elastic hook from the middle structure; Figure 10 It is a schematic diagram of the three-dimensional structure of Example 2. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

[0022] Example 1, as Figure 1-9 As shown, a marine debris suction platform used at the cold source water intake of a nuclear power plant includes a left balanced buoyancy tank 1, a right balanced buoyancy tank 2, and an intermediate main cabin 3 connected between the left balanced buoyancy tank 1 and the right balanced buoyancy tank 2. The left balanced buoyancy tank 1 and the right balanced buoyancy tank 2 adopt existing buoyancy tanks, which can change their own gravity by injecting water into or draining water from the tanks, thereby achieving floating and sinking in the water. The working principle is to adjust the buoyancy by changing the volume of the liquid inside. When the pump in the tank injects seawater into the tank, the negative buoyancy increases; when the water is discharged, the positive buoyancy is restored. This adjustment mechanism enables the buoyancy tank to flexibly control its floating and sinking underwater, that is, the left balanced buoyancy tank 1 and the right balanced buoyancy tank 2 are required to actively float and sink.

[0023] The middle main cabin 3 is equipped with a left suction pipe 31 and a right suction pipe 32 for sucking up marine debris. The left suction pipe 31 and the right suction pipe 32 are used to extract seawater containing marine debris. The pipe diameter can also be slightly larger, generally try to exceed 30 cm, and generally control it within one meter. Furthermore, the left suction pipe 31 is connected to the left suction device 311, and the right suction pipe 32 is connected to the right suction device 322. The left suction device 311 and the right suction device 322 can use existing water pumps to extract water by pumping. The left suction device 311 and the right suction device 322 are both installed and fixed on the middle main cabin 3. The entire design, the left balancing buoyancy tank 1 and the right balancing buoyancy tank 2 and the middle main cabin 3 form an H-shaped relatively stable and firm connection structure. The left balancing buoyancy tank 1 and the right balancing buoyancy tank 2 control the water level and balance of the entire platform in the seawater through buoyancy adjustment on the left and right sides, making it safer and more stable to use. In the existing environment, an interception net is set at the cold source water intake of the nuclear power plant. The interception net covers the cold source water intake of the nuclear power plant in the sea area, and marine debris will continue to accumulate at the interception net. Some existing interception nets are net bag type, and marine debris accumulates at the tail of the net bag. If it is done manually, workers need to take a fishing boat to clean the interception net bag. This cleaning is done on the outside of the water intake, that is, the side of the interception net facing away from the water intake. This method has high labor costs, poor sustainability, low efficiency, and safety. Some existing suction devices are on the inner side of the interception net, that is, close to the water intake side, close to the coast. In this design, the interception net adopts a net In the case of a net bag, its tail is directly connected to the suction pipe and other suction structures of the suction device, and the tail of the net bag becomes the suction inlet. In this prior art, the suction device is closer to the water intake. This design occupies space in the water intake area due to the suction device, the connecting pipes, and the suction operation. In addition, the suction of marine debris interferes with the water intake operation itself, affecting the water intake efficiency of the nuclear power plant. In addition, only marine debris at the tail of the net bag and at a nearby water level is suctioned, while marine debris at a deep water level or marine debris attached to the net bag is more difficult to handle, and the position is limited, and the degree of freedom is not high. The ability of the marine debris suction platform of this embodiment to smoothly rise and fall can suck marine debris at different water levels. Multiple left suction pipes 31 and right suction pipes 32 can be provided, which can improve efficiency and control stability. It can also have a higher degree of freedom like manual operation and is suitable for use outside the interception net and on the side facing away from the water intake. Of course, the suction platform can also be used on the inner side of the interception net near the water intake, but the applicant does not recommend this use because it requires connection to the tail of the net-shaped interception net. Although the suction platform has good buoyancy, the interception net is relatively stable and cannot move up and down significantly. In other words, the water level where marine debris is collected is relatively stable. This will result in poor freedom and can only collect marine debris within extremely small water levels. It is also difficult to handle marine debris attached to the interception net, which will also affect water intake. Therefore, it is very effective to use it outside the interception net.

[0024] Preferably, the intermediate main cabin 3 comprises a bottom support cabin 301 and a main cabin cover 302 mounted and fixed to the upper side of the bottom support cabin 301. The bottom support cabin 301 also has a buoyant cabin structure and can be a conventional rectangular cabin with constant buoyancy. The left and right buoyancy cabins have sufficient vertical adjustment capabilities, so sufficient buoyancy is sufficient. The main cabin cover 302 serves as a protective shield, protecting the structure mounted on the bottom support cabin 301, and can be secured using conventional fixing methods.

[0025] Furthermore, the left and right sides of the bottom support cabin 301 are detachably fixedly connected to the left balancing buoyancy cabin 1 and the right balancing buoyancy cabin 2 respectively. The detachable manner is convenient for disassembly and assembly, convenient for transportation, and can be assembled on site.

[0026] The left suction device 311 and the right suction device 322 are installed on the upper side of the bottom support cabin 301 and are located inside the main cabin outer cover 302. The left suction device 311 and the right suction device 322 adopt the existing water pump structure and are installed and fixed on the upper side of the bottom support cabin 301.

[0027] The left and right suction pipes 31, 32 are installed on the upper side of the bottom support cabin 301, with their inlet sections extending out of the main cabin housing 302. The left and right suction pipes 31, 32 are connected to the left suction device 311 and the right suction device 322, respectively. The sections of the left and right suction pipes 31, 32 near the inlet, i.e., the inlet sections, are located outside the main cabin housing 302. This facilitates the direct suction of marine debris and facilitates docking with the extended pipes for better suction. Of course, the remaining sections of the left and right suction pipes 31, 32 are connected to the corresponding suction devices inside the main cabin housing 302, i.e., connected to the inlets of the suction devices.

[0028] The detachable fixing method of the aforementioned left balancing buoyancy tank 1 and the right balancing buoyancy tank 2 can be adopted as follows: a plurality of left connecting plates 101 are fixed on the upper side and the right side of the left balancing buoyancy tank 1, a plurality of right connecting plates 102 are fixed on the upper side and the left side of the right balancing buoyancy tank 2, a plurality of left middle connecting plates 3011 for connecting with the left connecting plate 101 are fixed on the left side of the bottom support tank 301, and a plurality of right middle connecting plates 3012 for connecting with the right connecting plate 102 are fixed on the right side of the bottom support tank 301. The left connecting plate 101, the right connecting plate 102, the left middle connecting plate 3011 and the right middle connecting plate 3012 are all provided with connecting holes 1230 for bolts to pass through. The number and position of the left connecting plate 101 and the left middle connecting plate 3011 correspond one to one on the left and can be locked by bolts and nuts. The right side can refer to the left side. The left balancing buoyancy tank 1 and the right balancing buoyancy tank 2 can adopt a convex shape when projected in the vertical direction, with the protruding part facing the bottom support tank 301. This makes it more convenient to assemble and connect, and there is enough operating space. For example, the aforementioned connecting plate can be fixed in the protruding position, and then there is space to avoid when splicing.

[0029] Preferably, a discharge pipe 33 connected to the left suction device 311 and the right suction device 322 is also installed on the upper side of the bottom support cabin 301. The discharge pipe 33 is connected to the output side of the left suction device 311 and the right suction device 322. The outlet section of the discharge pipe 33 extends out of the main cabin outer cover 302. The outlet section of the discharge pipe 33 can be connected to an external discharge extension pipe to discharge seawater containing marine debris directly to a designated area. Of course, such external discharge extension pipes are installed on some existing buoyancy modules and can be extended relatively far. Such external discharge extension pipes can be hoses, and we use hard pipes made of steel pipes and other materials for the discharge pipe 33.

[0030] Furthermore, a more unique design is that the left suction duct 31 has at least three inlets, with at least one inlet facing forward, at least one inlet facing left, and at least one inlet facing rearward. Preferably, two left suction ducts 31 with the same inlet orientation are configured, i.e., two facing forward, two facing left, and two facing rearward. The left suction duct 31 can be made of a rigid pipe, while the right suction duct 32 has at least three inlets, with at least one inlet facing forward, at least one inlet facing right, and at least one inlet facing rearward. Similarly, two right suction ducts 32 with the same inlet orientation are configured. The right suction duct 32 also uses a rigid pipe.

[0031] In particular, at least one left suction pipe 31 with its inlet facing left serves as a direct suction pipe, and at least one right suction pipe 32 with its inlet facing right serves as a direct suction pipe. The direct suction pipe is a pipe directly used to suck marine debris and is not connected to other extended pipes. We can call this extended pipe a suction extension pipe 3120. The suction extension pipe 3120 can be a hose and needs to be installed on some existing buoyancy modules 3121. The buoyancy module 3121 can be, for example, some raft-like structures. However, the direct suction pipe does not need to be connected to the suction extension pipe 3120. The purpose of doing this is to make at least one group of left suction pipes 31 with the inlet facing left and right suction pipes 32 with the inlet facing right as direct suction pipes form a left-right relative structure. When there are different degrees of suction effects, a suction force difference between the left and right will be formed, which can make the platform move left and right. That is, a group of left suction pipes 31 with the inlet facing left and right suction pipes 32 with the inlet facing right as direct suction pipes have the same structure as two exhaust pipes. Through the suction difference of different flow intensities, the platform can move left and right and generate displacement. In this way, the entire platform can move and has the ability to drive the interception net to shake left and right, which can shake off the marine debris attached to the interception net. Of course, this needs to be coordinated with the subsequent structural design to be effectively realized. Of course, the amplitude of this shaking will not be large, that is, the difference in suction capacity between the left suction device 311 and the right suction device 322 cannot be too large, and this difference is the left-right alternation during communication, sometimes the left side suction is stronger, and sometimes the right side suction is stronger. This is because the left and right suction pipes 31 and 32 are both rigid, such as steel pipes, and are fixedly connected to the upper side of the bottom support cabin 301. This creates a jet-like propulsion effect. However, the pipes connected to the suction extension pipe 3120 do not have this effect because the flexible pipe absorbs the propulsion force and does not drag the bottom support cabin 301.

[0032] Similarly, at least one left suction pipe 31 with a forward inlet and at least one right suction pipe 32 with a rearward inlet can both serve as direct suction pipes, or at least one left suction pipe 31 with a rearward inlet and at least one right suction pipe 32 with a forward inlet can both serve as direct suction pipes. Direct suction pipes are those that are not connected to additional extension hoses or other structures. The design here creates a suction force difference in the front-to-back direction, thereby enabling the platform to move back and forth and also playing a role in rocking the interception net in the front-to-back direction. The left-to-right suction pipes can be straight pipes, and the front-to-back suction pipes can be L-shaped vertical pipes.

[0033] Of course, the applicant recommends reserving at least one left suction pipe 31 and at least one right suction pipe 32 with a forward inlet, not as direct suction pipes, but rather having them each connected to a suction extension pipe 3120. This is because, if the interception net is a net bag type, the suction extension pipe 3120 can extend from the outside into the inner area of ​​the interception net to suck out marine debris, which is more efficient. The left suction pipe 31 and the right suction pipe 32, which serve as direct suction pipes, will suck out marine debris between the outer areas of the interception net. Of course, the left suction pipe 31 and the right suction pipe 32 with other orientations can also be not used as direct suction pipes and can also be connected to the suction extension pipe 3120. The suction extension pipe 3120 is installed and connected to the buoyancy module 3121. These buoyancy modules 3121 can be fixed with docking rings 3122 for docking. The docking rings 3122 can be ferromagnetic steel rings. In this way, the docking rings 3122 can be docked by the mobile mechanism on the suction platform, and then towed and other actions can be performed. Here, it should be noted that each suction pipe is equipped with a suction device, which provides one-to-one service, is more independent, and has higher controllability, making it suitable for more high-end control operations. Of course, the pump used in the suction device is preferably a variable frequency water pump, so that both energy control and the aforementioned control of different suction forces can play a good role.

[0034] Furthermore, the inlets of all left suction devices 311 are connected to the left suction pipe 31, and the outlets of all left suction devices 311 can be connected to the output branch pipe, and then connected to the same total left main pipe 3001 through the branch pipe. Similarly, the outlets of all right suction devices 322 can be connected to the output branch pipe, and then connected to the same total right main pipe 3002 through the branch pipe. The left main pipe 3001 and the right main pipe 3002 are connected to the same input pipe, and the input pipe is connected to the input end of a secondary water pump 3003, and the output end of the secondary water pump 3003 is connected to the discharge pipe 33.

[0035] This multi-stage pump configuration, in both parallel and series configurations, offers enhanced controllability and is suitable for refined management. Furthermore, the discharge pipe 33 is equipped with a crushing mechanism 331 for breaking up marine debris. This crushing mechanism 331 can be implemented using existing reamer or agitator equipment. This allows debris to be broken down and discharged directly into the ocean or a designated area along with the seawater.

[0036] Furthermore, the pipe section of the discharge pipe 33 is also provided with a solid-liquid separation compression mechanism 332 for processing the mixture processed by the crushing mechanism 331. The solid-liquid separation compression mechanism 332 can also use existing equipment, which has a better processing effect. The separated liquid is basically seawater, which can be directly discharged into the ocean. The solid cake-like waste remaining can be recycled. In the case of this discharge pipe 33 directly discharging liquid, there is no need to connect an extended hose or other structure. At this time, the discharge of liquid from the discharge pipe 33 will also bring driving thrust. At this time, an automatic control structure is needed to more reasonably control each pump body, so that the discharge force of the discharge pipe 33 and the suction force in certain directions of the suction pipe can be integrated to ensure that the platform will not be too bumpy when it needs to be shaken.

[0037] Preferably, a movable mechanical boom 4 is installed and connected to the bottom support cabin 301. These booms can adopt existing structures and can move in space and can extend and retract. The mechanical boom 4 is installed and connected to a pulling head 41 for pulling. The pulling head 41 can pull the anti-pollution interception net laid at the cold source water intake of the nuclear power plant. The pulling head 41 can be a circular hook. As mentioned above, the suction platform has the ability to shake. The mechanical boom 4 uses the pulling head 41 to hook one of the grids of the interception net and can shake the interception net. Some marine debris attached to the interception net can be shaken off or loosened, especially some seaweed, which can easily get caught on the interception net. Multiple mechanical booms 4 can be provided. In addition, the pulling head 41 can also hook the docking ring 3122 on the buoyancy module 3121 to guide and position some extension hose-like structures. The mechanical boom 4 can adopt an electric structure for easy control.

[0038] Furthermore, the mechanical boom 4 is also connected to a movable arm 42 that is movable relative thereto. This movable arm 42 is connected to a cleaning device capable of removing marine debris attached to the anti-fouling interception net. The movable arm 42 can also utilize an existing mechanical arm structure and be attached to the mechanical boom 4 using existing methods. In particular, the cleaning device on the movable arm 42 effectively removes marine debris attached to the interception net, allowing it to escape without blocking the interception net and affecting water extraction efficiency. The movable arm 42 can be attached to the mechanical boom 4 by simply turning off the existing robot's motor.

[0039] Specifically, the cleaning device includes a rotatable rotating rod 5 and an elastic hook 51 connected to the outer periphery of the rotating rod 5. The movable arm 42 has an existing mounting connection structure for the rotating rod 5. The rotating rod 5 can be an actively rotatable electric rod structure, which is driven by a corresponding motor to actively rotate. The elastic hook 51 is made of a smooth copper structure. Specifically, the elastic hook 51 includes a central C-shaped or V-shaped main hook body 511 and a left torsion spring 512 and a right torsion spring 513 integrally connected to the two legs of the main hook body. The left torsion spring 512 and the right torsion spring 513 are respectively mounted on the rotating rod 5, and the ends of the left torsion spring 512 and the right torsion spring 513 away from the main hook body 511 are fixed to the rotating rod 5. The outer wall of the rotating rod 5 can be formed with a plurality of annular grooves 500 for the left torsion spring 512 and the right torsion spring 513 to be inserted into. The fixed ends of the left torsion spring 512 and the right torsion spring 513 can be fixed to the groove wall of the annular groove 500 by welding or other means. Each rotating rod 5 may be provided with a plurality of elastic hooks 51. Such elastic hooks 51 can, on the one hand, clean marine debris attached to the interception net, and on the other hand, are not likely to damage the interception net, making them very suitable. Of course, the structure of the elastic hooks 51 can also be replaced by existing cleaning mechanisms such as bristle roller brushes, but the special method provided by this embodiment is not as effective.

[0040] Preferably, the bottom support cabin 301 is also equipped with a controller 61, a diesel generator set 62, a wireless communication device 63, and a fan 64. The diesel generator set 62, wireless communication device 63, and fan 64 are all automatically controlled by the controller 61 and can be electrically connected to the controller 61 for unified control. All of these devices can be existing equipment. The fan 64 should be located at the highest position of the main cabin housing 302 because the internal temperature will be high and heat dissipation is necessary. However, since the platform will enter the water and sink, and the suction pipes operate in seawater, a portion of the upper side of the bottom support cabin 301 will enter the seawater and float up and down at a certain depth. Therefore, the controller 61, diesel generator set 62, and wireless communication device 63 should be located as high as possible on the upper side of the bottom support cabin 301 and properly waterproofed. Specifically, these devices should be watertight. In particular, the diesel generator set 62 should not only be high, but also preferably equipped with a separate, watertight housing to prevent water ingress. The diesel generator set 62 provides power to the electrical equipment on the suction platform. Because the harsh conditions in the ocean often make it difficult to connect to large-scale power facilities or charging equipment, the diesel generator set 62 can provide the necessary electricity as long as there is sufficient diesel. The aforementioned water pumps, motors, and other equipment can all be powered by the diesel generator set 62, but the wiring required to power these devices must ensure watertightness. Furthermore, the aforementioned motors, water pumps, and marine debris handling equipment must also be watertight. The water pumps, motors, and other equipment can also be electrically connected to the controller 61 for unified control. The controller can then rationally plan and utilize them. For example, using existing algorithms, it can control the suction volume of the suction pipeline and the output volume of the discharge pipeline, thereby controlling not only the suction operation but also the movement and balance of the suction platform. This can be effectively implemented, providing greater controllability. Of course, the input and output pipelines require the installation of corresponding electronic control devices such as solenoid valves and flow sensors, all of which can be controlled by the controller. Temperature sensors and pressure sensors can also be installed. The wireless communication device 63 can communicate with the terminal on land to report the situation at sea, the operation status on the suction platform, the operation status of each actuator, the data of various sensors, etc. in real time. This makes it safer and more sustainable to use, and also tells land personnel whether they need to intervene for maintenance, diesel replenishment, waste disposal, parts replacement, etc.

[0041] Through the above design, the functionality of the entire suction platform is better, the use is safe and stable, the labor cost is greatly reduced, the ability to handle marine debris is better, it will not cause blockage, and will not affect the water intake of the nuclear power plant. It has higher controllability and better energy-saving control, and can carry out more refined management and control. It also has a higher degree of freedom and a stronger operational capability.

[0042] Example 2, as Figure 10 As shown, a marine debris extraction system for a nuclear power plant cold source water intake includes the marine debris extraction platform for a nuclear power plant cold source water intake described in Example 1, and also includes an anti-fouling interception net 71. The upper side of the anti-fouling interception net 71 is fixed to a suspension beam 72, which can be installed on land or on the seashore near land. The suspension beam 72 is made of a high-strength structure such as a steel rope or steel rod. A hanging pile 720 is fixed to the upper side of the suspension beam 72, which can be suspended by a pulling head 41. The hanging pile 720 can be equipped with an electronic lock. When the pulling head 41 is suspended on it by a mechanical crane arm, the electronic lock automatically re-engages the pulling head 41. Of course, other convenient locking structures can also be used to ensure that the pulling head 41 does not fall off the hanging pile 720. Alternatively, the pulling head 41 itself can be equipped with a lock structure that can automatically open and close. When opened, it is locked by the hanging pile 720. The main purpose is to allow the two to be suspended and easily removed. The lower side of the anti-fouling intercepting net 71 is connected with a counterweight 73. When not in operation, the pulling head 41 can be hung on the hanging pile 720, so that the suction platform can stay more stable at sea and will not be shaken severely by strong winds and waves, thereby improving the stability of the suction platform. Of course, a windlass can be installed on the upper side of the bottom support cabin 301 of the suction platform. The windlass can automatically reel in the anchor. When the suction platform reaches an area, it can drop anchor. However, after dropping anchor, the suction platform can still be movable within a large range because the lower anchor chain is connected to control the mobility of the suction platform, mainly underwater. If combined with the upper side of this lifting structure, there are position control structures on both the upper and lower sides. Then, when not in operation or when there are strong winds and waves, the platform can still be relatively stable and not easily overturned. Through the above design, the anti-fouling interception net 71 does not need to extend as far as the existing net bag, but can be flat or indented a short distance like the inner water intake. Because the suction platform of the present application has good suction effect, better processing capacity, continuity and thoroughness, the suction platform and anti-fouling interception net 71 can be located closer to the shore, without affecting water intake and improving safety. The design of the counterweight block 73 is also conventional, ensuring that the position of the lower side of the anti-fouling interception net 71 is relatively stable.

[0043] Furthermore, the pulling head 41 has a magnetic structure, and the anti-fouling interception net 71 is a ferromagnetic wire rope net. This design can not only hook the anti-fouling interception net 71 but also attract the anti-fouling interception net 71, so that the interception net can be better driven to shake during the shaking process of the suction platform to remove marine debris. Because the suction platform is shaken by the force of the water flow, there will be few problems with the effect and structure. If the mechanical boom 4 is directly used to swing back and forth, on the one hand, the effect is not good, and on the other hand, the mechanical damage to the mechanical boom 4 will be very serious, the practicality is not high, and it is also easy to be damaged. The magnetic structure in the pulling head 41 can be embedded with an internal permanent magnet, or it can be an electromagnetic magnetic structure and it is also feasible to realize the presence or absence of magnetism by turning the power on and off. This design of the pulling head 41 not only has such a good effect on the interception net, but also can better pull the aforementioned docking ring 3122, so that the suction extension tube 3120 can be pulled up and down, moved back and forth, etc.

[0044] Such a marine debris suction system is not only effective in sucking marine debris, but also more effective for the structural design of the nuclear power plant's water intake itself. It has a better water intake effect, higher safety, and relatively more controllable costs, resulting in relatively high economic benefits.

[0045] 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 such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A marine debris suction platform for use at a cold water intake of a nuclear power plant, characterized in that: The invention comprises a left balancing buoyancy compartment (1), a right balancing buoyancy compartment (2), and an intermediate main compartment (3) connected between the left balancing buoyancy compartment (1) and the right balancing buoyancy compartment (2). The intermediate main compartment (3) is equipped with a left suction pipe (31) and a right suction pipe (32) for sucking marine debris. The left suction pipe (31) is connected to a left suction device (311), and the right suction pipe (32) is connected to a right suction device (322). Both the left suction device (311) and the right suction device (322) are fixedly mounted on the intermediate main compartment (3). The left balancing buoyancy compartment (1) and the right balancing buoyancy compartment (2) can actively float up and sink.

2. The marine debris suction platform for use at a cold source water intake of a nuclear power plant according to claim 1, characterized in that: The middle main cabin (3) comprises a bottom support cabin (301) and a main cabin outer cover (302) fixedly mounted on the upper side of the bottom support cabin (301); the left and right sides of the bottom support cabin (301) are respectively detachably fixedly connected to the left balancing buoyancy cabin (1) and the right balancing buoyancy cabin (2); the left suction device (311) and the right suction device (322) are mounted on the upper side of the bottom support cabin (301) and are located within the main cabin outer cover (302); the left suction pipe (31) and the right suction pipe (32) are mounted on the upper side of the bottom support cabin (301) and the inlet sections extend out of the main cabin outer cover (302).

3. The marine debris suction platform for use at a cold source water intake of a nuclear power plant according to claim 2, characterized in that: A plurality of left connecting plates (101) are fixed on the upper side and right side of the left balancing buoyancy tank (1); a plurality of right connecting plates (102) are fixed on the upper side and left side of the right balancing buoyancy tank (2); a plurality of left middle connecting plates (3011) for connecting to the left connecting plates (101) are fixed on the left side of the bottom supporting tank (301); a plurality of right middle connecting plates (3012) for connecting to the right connecting plates (102) are fixed on the right side of the bottom supporting tank (301); and connection holes (1230) for bolts to pass through are provided on the left connecting plate (101), the right connecting plate (102), the left middle connecting plate (3011) and the right middle connecting plate (3012).

4. The marine debris suction platform for use at a cold source water intake of a nuclear power plant according to claim 1, characterized in that: The upper side of the bottom support cabin (301) is also equipped with a discharge pipe (33) connected to the left suction device (311) and the right suction device (322), and the outlet section of the discharge pipe (33) extends out of the main cabin outer cover (302). The left suction pipe (31) has at least three inlets, at least one of which faces forward, at least one of which faces left, and at least one of which faces rearward. The right suction pipe (32) has at least three inlets, at least one of which faces forward, at least one of which faces right, and at least one of which faces rearward. The at least one left suction pipe (31) with an inlet facing left serves as a direct suction pipe, the at least one right suction pipe (32) with an inlet facing right serves as a direct suction pipe, the at least one left suction pipe (31) with an inlet facing forward and the at least one right suction pipe (32) with an inlet facing rearward both serve as direct suction pipes, or the at least one left suction pipe (31) with an inlet facing rearward and the at least one right suction pipe (32) with an inlet facing forward both serve as direct suction pipes.

5. The marine debris suction platform for use at a cold source water intake of a nuclear power plant according to claim 4, characterized in that: The pipe section of the discharge pipe (33) is provided with a crushing mechanism (331) for crushing marine debris, and the pipe section of the discharge pipe (33) is also provided with a solid-liquid separation compression mechanism (332) for processing the mixture processed by the crushing mechanism (331).

6. The marine debris suction platform for use at a cold source water intake of a nuclear power plant according to claim 1, characterized in that: The bottom support cabin (301) is connected to a movable mechanical boom (4), the mechanical boom (4) is connected to a pulling head (41) for pulling, the pulling head (41) can pull an anti-fouling interception net laid at a cold source water intake of a nuclear power plant, and the mechanical boom (4) is also connected to a movable arm (42) that can move relative to the mechanical boom (4), and the movable arm (42) is connected to a cleaning device that can remove marine debris attached to the anti-fouling interception net.

7. The marine debris suction platform for use at a cold source water intake of a nuclear power plant according to claim 7, characterized in that: The cleaning device comprises a rotatable rotating rod (5) and an elastic hook (51) connected to the outer periphery of the rotating rod (5); the elastic hook (51) comprises a central C-shaped arc-shaped main hook body and a left torsion spring and a right torsion spring integrally connected to two legs of the main hook body.

8. The marine debris suction platform for use at a cold source water intake of a nuclear power plant according to claim 1, characterized in that: The bottom support cabin (301) is also equipped with a controller (61), a diesel generator set (62), a wireless communication device (63), and a fan (64). The diesel generator set (62), the wireless communication device (63), and the fan (64) can all be automatically controlled by the controller (61).

9. A marine debris suction system for use at a cold water intake of a nuclear power plant, characterized in that: The invention comprises a marine debris suction platform for use at a cold source water intake of a nuclear power plant as described in any one of claims 6 to 7, and further comprises an anti-fouling interception net (71), wherein the upper side of the anti-fouling interception net (71) is fixed on a suspension beam (72), a hanging pile (720) capable of being hung by a pulling head (41) is fixed on the upper side of the suspension beam (72), and a counterweight block (73) is connected to the lower side of the anti-fouling interception net (71).

10. The marine debris extraction system for use at a cold source water intake of a nuclear power plant according to claim 9, characterized in that: The pulling head (41) has a magnetic structure therein, and the anti-fouling interception net (71) is a ferromagnetic steel wire rope net.

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