Anti-biofouling device for underwater outboard equipment of marine facilities and snorkeling platform
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 713TH RES INST OF CHINA STATE SHIPBUILDING CORP LTD
- Filing Date
- 2026-04-09
- Publication Date
- 2026-06-09
Smart Images
Figure CN122166272A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of marine engineering antifouling technology, and in particular to antibiofouling devices and snorkeling platforms for underwater outboard equipment of marine facilities. Background Technology
[0002] Submarine outboard equipment of marine facilities is constantly submerged in seawater, where marine organisms gradually accumulate and adhere to its surface. This accelerates corrosion and severely impacts the service life of the equipment. Current technologies, such as high-pressure water jetting and manual scraping, are difficult to use to remove the marine organisms from the surface of the equipment. These methods are challenging, often resulting in incomplete removal and require significant manpower and resources. Furthermore, the treated surface of the equipment is usually damaged to varying degrees, further affecting its lifespan.
[0003] A snorkeling platform is a type of marine work platform. Some snorkeling platforms need to repeatedly surface and submerge in the sea to carry out marine operations. Among them, relying on the winch lifting system installed on the snorkeling platform to raise and lower the snorkeling platform in the seawater is a common method of raising and lowering the snorkeling platform.
[0004] Chinese utility model patent CN205246073U discloses a fixed-point self-elevating marine environmental measurement platform. The platform includes a float and an anchoring weight. An underwater motor winch and measuring devices are installed inside the float. The mooring cable of the underwater motor winch is connected to the anchoring weight. In operation, the anchoring weight is submerged on the seabed, and the underwater motor winch operates to raise and lower the mooring cable, thereby causing the float to rise and fall in the water. However, the anchoring and lifting system of this snorkeling platform is constantly submerged in seawater, and marine organisms easily accumulate on the surface of the system, a phenomenon known as biofouling.
[0005] Marine organisms adhering to the surface of the mooring and lifting system accelerate its corrosion, severely impacting its lifespan. Since snorkeling platforms rely on this system for raising and lowering the hull, its failure renders the entire platform inoperable. To prevent snorkeling platform failure, frequent cleaning and maintenance of the mooring and lifting system are necessary, increasing maintenance costs. Furthermore, cleaning the surface requires high-pressure water washing and manual scraping, which is difficult and time-consuming, requiring significant manpower and resources. Even after cleaning, the surface of the mooring and lifting system is often damaged to varying degrees, further affecting its lifespan.
[0006] Based on the above, existing technologies often employ pre-coating the surface of the equipment to be protected to prevent biofouling. Common anti-biofouling methods include physical coatings and chemical coatings. Physical coatings prevent biofouling by applying a smooth, low-surface-energy coating or a hydrophobic layer to the equipment surface. However, physical coatings are prone to peeling off, have limited protection time, and are easily rendered ineffective. Chemical coatings involve applying a layer of chemical antifouling paint to the equipment surface, which inhibits biofouling by releasing toxic substances. However, this method damages the marine ecosystem and is being gradually phased out.
[0007] In fact, both of the above methods are only suitable for the protection of large non-working surfaces, such as the protection against biofouling on the bottom of ships. For working surfaces with characteristics such as movement and friction, the coating will peel off directly due to movement and friction, making it difficult to exert the antifouling protection effect of the coating. For example, when the anchor lifting system is working, the anchor chain will wrap around the surface of the drum, generating friction, which can easily scrape off the coating.
[0008] Besides the two commonly used antifouling methods mentioned above, some fields use copper materials to manufacture components that require protection against biofouling. The copper ions released by copper prevent marine organisms from attaching to the surface of the components. However, copper has low strength and is not suitable for manufacturing structural components that require high load-bearing capacity. During the use of mooring and lifting systems, the entire snorkeling platform needs to be towed down, and the drum of the mooring and lifting system will be subjected to great forces. The strength of copper cannot meet the usage requirements of mooring and lifting systems. In addition, copper has a large potential difference with common marine metals (such as carbon steel or low alloy steel). When used together, it will cause a battery system to form between copper and steel. As a result, the metal with the more negative potential (steel) acts as the anode, and its corrosion rate is significantly accelerated. Therefore, copper is not suitable as a raw material for manufacturing mooring and lifting systems that need to be immersed in seawater for a long time. Summary of the Invention
[0009] The purpose of this invention is to provide an anti-biofouling device for underwater outboard equipment of marine facilities, so as to solve the technical problem that the existing anti-biofouling devices for underwater outboard equipment of marine facilities cannot effectively prevent organisms from attaching to the surface of underwater outboard equipment for a long period of time.
[0010] To achieve the above objectives, the present invention provides an anti-biofouling device for underwater overboard equipment of marine facilities, comprising an annular protective antifouling cylinder fixedly installed at the bottom of the marine facility, the side wall of the annular protective antifouling cylinder covering the periphery of the underwater overboard equipment, and a heating device for heating the seawater inside the annular protective antifouling cylinder.
[0011] Beneficial effects: This invention is an improved invention. By setting an annular protective antifouling cylinder around the underwater outboard equipment at the bottom of the marine facility and installing a heating device inside the annular protective antifouling cylinder, the water around the underwater outboard equipment can be heated to a temperature of over 50°C. This can prevent organisms from approaching and attaching to the underwater outboard equipment, avoid corrosion, extend the service life of the underwater outboard equipment, reduce the maintenance frequency of the underwater outboard equipment, and ensure the long-term stable operation of the underwater outboard equipment.
[0012] Furthermore, the heat dissipation unit of the cooling system for cooling the heat-generating equipment inside the marine facility is set inside the annular protective anti-fouling cylinder to form the heating device, and the medium circulation pipeline for connecting the heat absorption unit and the heat dissipation unit of the cooling system to form a closed loop passes through the annular protective anti-fouling cylinder.
[0013] Beneficial effects: The heat-absorbing unit of the cooling system can absorb the heat emitted by the heating equipment of the marine facility. The circulating medium, after absorbing heat and becoming heated, flows along the medium circulation pipeline into the heat dissipation unit inside the annular protective antifouling cylinder, and exchanges heat with the seawater in the antifouling cylinder, lowering the temperature of the circulating medium. This allows the cooled circulating medium to be recirculated into the marine facility's cabin to absorb the heat emitted by the heating equipment. The seawater, after heat exchange, becomes heated, effectively heating the seawater around the underwater outboard equipment through the heat dissipation unit. This prevents organisms from approaching and attaching to the underwater outboard equipment. In other words, this invention, through the establishment of a closed-loop medium circulation pipeline, achieves both cooling of the heating equipment inside the cabin and recovery and utilization of the heat emitted by the heating equipment to heat the seawater around the underwater outboard equipment, thereby preventing organisms from attaching to the underwater outboard equipment. By utilizing the heat dissipation unit of the cooling system to heat the seawater around the underwater outboard equipment, no additional heating device is needed. It utilizes a portion of the original cooling system to heat the seawater in the annular protective antifouling cylinder, resulting in a simple overall structure and reduced overall energy consumption of the marine facility. In addition, the annular protective antifouling cylinder can restrict the seawater inside, preventing it from being heated and flowing away rapidly, which would make it impossible to maintain the seawater temperature above 50°C. This is equivalent to the annular protective antifouling cylinder reducing the outward flow of seawater, ensuring that the seawater temperature inside the cylinder is relatively high. This can prevent organisms from attaching to underwater outboard equipment. At the same time, the annular protective antifouling cylinder encloses the underwater outboard equipment within its cylinder wall, which can significantly reduce the impact of water flow on the underwater outboard equipment and improve its service life.
[0014] Furthermore, the heat dissipation unit is a heat exchange tube arranged around the inner wall of the annular protective anti-fouling cylinder.
[0015] Beneficial effects: The heat exchange tubes are arranged around the inner wall of the annular protective antifouling cylinder, which can heat the seawater in the antifouling cylinder in the circumferential direction. This ensures that the seawater in all parts of the antifouling cylinder can be stably maintained above 50°C, avoiding the situation where the seawater in some areas of the antifouling cylinder is not heated and the temperature is below 50°C, which would make it impossible to prevent organisms from attaching to underwater outboard equipment.
[0016] Furthermore, the heat exchange tube is spirally coiled around the axis of the annular protective anti-fouling cylinder.
[0017] Beneficial effects: The heat exchange tubes are fixed to the inner wall of the annular protective and antifouling cylinder in a spiral arrangement. This tube arrangement is simple and efficient, and the heat exchange tubes are easy to install and disassemble for later maintenance. In addition, this arrangement ensures that the seawater inside and around the annular protective and antifouling cylinder is heated evenly in the circumferential direction.
[0018] Furthermore, several fixed brackets are fixed on the inner wall of the annular protective anti-fouling cylinder, and the heat exchange tube is fixedly installed on the inner wall of the annular protective anti-fouling cylinder through the fixed brackets. The fixed brackets are provided with through holes that are adapted to the shape and size of the heat exchange tube, and the heat exchange tube passes through the through holes.
[0019] Beneficial effects: The heat exchange tube is fixed to the inner wall of the annular protective anti-fouling cylinder by the fixed bracket. The heat exchange tube is inserted into the through hole of the fixed bracket and fixed firmly, avoiding water flow impact that could cause the heat exchange tube to fall off the inner wall of the annular protective anti-fouling cylinder.
[0020] Furthermore, the fixed bracket includes a fixed base and a fixed buckle plate that are detachably and fixedly connected together. Several semi-circular through grooves are provided on the opposite side walls of the fixed base and the fixed buckle plate, so that when the fixed base and the fixed buckle plate are put together, two semi-circular through grooves at corresponding positions on the fixed base and the fixed buckle plate just surround the through hole for passing through the heat exchange tube.
[0021] Beneficial effects: The fixed bracket adopts a mating design. When installing the heat exchange tube, the fixing plate is removed. At this time, the heat exchange tube can be easily inserted directly into the semi-circular through groove of the fixed base from the side. Then, the fixing plate is fastened to the fixed base to fix the heat exchange tube in the fixed bracket. There is no need to insert the heat exchange tube bit by bit into the through hole along the axial direction of the fixed bracket, which greatly improves the installation efficiency of the heat exchange tube.
[0022] Furthermore, the annular protective anti-fouling cylinder has several water passage windows evenly distributed circumferentially on its cylinder wall.
[0023] Beneficial effects: By opening several water passage windows on the wall of the annular protective antifouling cylinder, the exchange efficiency between the seawater inside and outside the cylinder can be improved. This allows the seawater heated by the heat exchange tubes inside the cylinder to exchange with the outside cold water in a controllable manner, ensuring that the temperature of the seawater inside the cylinder does not rise to an excessively high level. This prevents the heat from being unable to dissipate effectively from the circulating medium inside the heat exchange tubes, which could lead to the failure of the heat exchange system. It also ensures that the circulating medium can be cooled to a sufficiently low temperature inside the heat exchange tubes to recirculate into the marine facility cabin to absorb the heat emitted by the power source equipment. Clearly, this design balances heat dissipation from the heat exchange tubes with heating of the seawater inside and near the cylinder.
[0024] Furthermore, the bottom of the annular protective antifouling cylinder is provided with a hollowed-out bottom plate, and the hollowed-out bottom plate has an avoidance channel for avoiding underwater outboard equipment of marine facilities.
[0025] Beneficial effects: By setting a perforated bottom plate at the bottom of the annular protective antifouling cylinder, radial support can be provided to the bottom of the side wall of the annular protective antifouling cylinder during long-term use, preventing the lower end of the side wall of the annular protective antifouling cylinder from deforming under the impact of water flow and affecting the service life of the annular protective antifouling cylinder; in addition, some underwater outboard equipment of marine facilities needs to extend downward through the bottom of the annular protective antifouling cylinder during use. Therefore, by opening avoidance channels on the perforated bottom plate, interference between the protective antifouling cylinder and the underwater outboard equipment of marine facilities can be avoided.
[0026] Furthermore, the annular protective anti-fouling cylinder has a clearance hole on its side wall for the medium circulation pipeline to pass through.
[0027] Beneficial effects: By setting the clearance hole, the medium circulation pipeline can directly pass through the side wall of the annular protective anti-fouling cylinder and enter the annular protective anti-fouling cylinder, without having to go around to the bottom of the annular protective anti-fouling cylinder and then pass upward into the annular protective anti-fouling cylinder. This optimizes the routing of the medium circulation pipeline and reduces the installation difficulty of the medium circulation pipeline.
[0028] The present invention also aims to provide a snorkeling platform to solve the technical problem that the biofouling prevention device of the anchoring and lifting system of the existing snorkeling platform cannot simultaneously meet the strength requirements of the anchoring and lifting system and the long-term effective biofouling prevention protection.
[0029] To achieve the above objectives, the present invention provides a snorkeling platform, including a hull and an anchoring and lifting system for controlling the raising and lowering of the hull. The anchoring and lifting system is installed at the bottom of the hull, and a ring-shaped protective antifouling cylinder with one side wall fixed to the bottom of the hull and surrounding the anchoring and lifting system is provided. The lower end of the ring-shaped protective antifouling cylinder is open, and a heating device for heating the seawater inside the ring-shaped protective antifouling cylinder is provided inside the ring-shaped protective antifouling cylinder.
[0030] Beneficial effects: This invention is an improved invention. By setting an annular protective anti-fouling cylinder around the mooring and lifting system at the bottom of the snorkeling platform, and installing a heating device inside the annular protective anti-fouling cylinder, the water around the mooring and lifting system can be heated to a temperature of over 50°C. This prevents organisms from approaching and attaching to the mooring and lifting system, avoids corrosion, extends the service life of the mooring and lifting system, reduces the maintenance frequency of the mooring and lifting system, and ensures the long-term stable operation of the snorkeling platform.
[0031] Furthermore, it also includes a cooling system for cooling the heat-generating equipment inside the cooling chamber. The heat-absorbing unit of the cooling system is located inside the chamber, and the heat-dissipating unit of the cooling system is located inside the anti-fouling cylinder, which constitutes the heating device. The heat-absorbing unit and the heat-dissipating unit form a closed loop through a medium circulation pipeline, which is sealed through the chamber wall.
[0032] Beneficial effects: The heat-absorbing unit of the cooling system can absorb the heat emitted by the heating equipment of the snorkeling platform. The circulating medium, after absorbing heat and becoming heated, flows along the medium circulation pipeline to the heat dissipation unit inside the annular protective antifouling cylinder, where it exchanges heat with the seawater inside the cylinder, lowering the temperature of the circulating medium. This allows the cooled circulating medium to be recirculated into the cabin to absorb the heat emitted by the heating equipment. The seawater, after heat exchange, becomes heated, effectively heating the seawater around the mooring and lifting system through the heat dissipation unit. This helps prevent organisms from approaching and attaching to the mooring and lifting system. In other words, by setting up a closed-loop medium circulation pipeline, this invention achieves both cooling of the heating equipment inside the cabin and recovery and utilization of the heat emitted by the heating equipment to heat the seawater around the mooring and lifting system, thereby preventing organisms from attaching to the system. By using the heat dissipation unit of the cooling system to heat the seawater around the mooring and lifting system, no additional heating device is needed. It utilizes a portion of the original cooling system to heat the seawater inside the annular protective antifouling cylinder, resulting in a simple overall structure and reduced overall energy consumption of the snorkeling platform. In addition, the annular protective antifouling cylinder can restrict the seawater inside, preventing it from being heated and flowing away rapidly, which would make it impossible to maintain the seawater temperature above 50°C. Essentially, the annular protective antifouling cylinder reduces the outward flow of seawater, ensuring a relatively high seawater temperature inside. This prevents organisms from attaching to the mooring and lifting system. Furthermore, by enclosing the mooring and lifting system within its cylinder wall, the annular protective antifouling cylinder significantly reduces the impact of water flow on the system, extending its service life.
[0033] Furthermore, the heat dissipation unit is a heat exchange tube arranged around the inner wall of the annular protective anti-fouling cylinder.
[0034] Beneficial effects: The heat exchange tubes are arranged around the inner wall of the annular protective antifouling cylinder, which can heat the seawater in the antifouling cylinder in the circumferential direction. This ensures that the seawater in all parts of the antifouling cylinder can be stably maintained above 50°C, avoiding the situation where the seawater in some areas of the antifouling cylinder is not heated and the temperature is below 50°C, which would make it impossible to prevent organisms from attaching to the mooring and lifting system.
[0035] Furthermore, the heat exchange tube is spirally coiled around the axis of the annular protective anti-fouling cylinder.
[0036] Beneficial effects: The heat exchange tubes are fixed to the inner wall of the annular protective and antifouling cylinder in a spiral arrangement. This tube arrangement is simple and efficient, and the heat exchange tubes are easy to install and disassemble for later maintenance. In addition, this arrangement ensures that the seawater inside and around the annular protective and antifouling cylinder is heated evenly in the circumferential direction.
[0037] Furthermore, several fixed brackets are fixed on the inner wall of the annular protective anti-fouling cylinder, and the heat exchange tube is fixedly installed on the inner wall of the annular protective anti-fouling cylinder through the fixed brackets. The fixed brackets are provided with through holes that are adapted to the shape and size of the heat exchange tube, and the heat exchange tube passes through the through holes.
[0038] Beneficial effects: The heat exchange tube is fixed to the inner wall of the annular protective anti-fouling cylinder by the fixed bracket. The heat exchange tube is inserted into the through hole of the fixed bracket and fixed firmly, avoiding water flow impact that could cause the heat exchange tube to fall off the inner wall of the annular protective anti-fouling cylinder.
[0039] Furthermore, the fixed bracket includes a fixed base and a fixed buckle plate that are detachably and fixedly connected together. Several semi-circular through grooves are provided on the opposite side walls of the fixed base and the fixed buckle plate, so that when the fixed base and the fixed buckle plate are put together, two semi-circular through grooves at corresponding positions on the fixed base and the fixed buckle plate just surround the through hole for passing through the heat exchange tube.
[0040] Beneficial effects: The fixed bracket adopts a mating design. When installing the heat exchange tube, the fixing plate is removed. At this time, the heat exchange tube can be easily inserted directly into the semi-circular through groove of the fixed base from the side. Then, the fixing plate is fastened to the fixed base to fix the heat exchange tube in the fixed bracket. There is no need to insert the heat exchange tube bit by bit into the through hole along the axial direction of the fixed bracket, which greatly improves the installation efficiency of the heat exchange tube.
[0041] Furthermore, the annular protective anti-fouling cylinder has several water passage windows evenly distributed circumferentially on its cylinder wall.
[0042] Beneficial effects: By opening several water passage windows on the wall of the annular protective antifouling cylinder, the exchange efficiency between the seawater inside and outside the cylinder can be improved. This allows the seawater heated by the heat exchange tubes inside the cylinder to exchange with the outside cold water in a controllable manner, ensuring that the temperature of the seawater inside the cylinder does not rise to an excessively high level. This prevents the heat from being unable to dissipate effectively from the circulating medium inside the heat exchange tubes, which could lead to the failure of the heat exchange system. It also ensures that the circulating medium can be cooled to a sufficiently low temperature inside the heat exchange tubes to recirculate into the cabin and absorb the heat emitted by the power source equipment. Clearly, this design balances heat dissipation from the heat exchange tubes with heating of the seawater inside and near the cylinder.
[0043] Furthermore, the bottom of the annular protective antifouling cylinder is provided with a hollowed-out bottom plate, and the hollowed-out bottom plate has an avoidance channel for avoiding underwater outboard equipment of marine facilities.
[0044] Beneficial effects: By setting a perforated bottom plate at the bottom of the annular protective antifouling cylinder, radial support can be provided to the bottom of the side wall of the annular protective antifouling cylinder during long-term use, preventing the lower end of the side wall of the annular protective antifouling cylinder from deforming under the impact of water flow and affecting the service life of the annular protective antifouling cylinder; in addition, some underwater outboard equipment of marine facilities needs to extend downward through the bottom of the annular protective antifouling cylinder during use. Therefore, by opening avoidance channels on the perforated bottom plate, interference between the protective antifouling cylinder and the underwater outboard equipment of marine facilities can be avoided.
[0045] Furthermore, the cabin comprises, from top to bottom, a semi-ellipsoidal cabin top, a cylindrical cabin wall, and a semi-ellipsoidal cabin bottom connected in sequence, and the outer diameter of the annular protective anti-fouling cylinder is the same as the outer diameter of the cylindrical cabin wall.
[0046] Beneficial effects: By making the top and bottom of the hull curved, the flow resistance of the hull can be reduced, facilitating rapid ascent and descent of the hull; setting the outer diameter of the annular protective antifouling cylinder to be the same as the outer diameter of the cylindrical hull wall can optimize the flow field, reduce flow resistance, and improve the stability of the hull. At the same time, it reduces the exchange of seawater inside the annular protective antifouling cylinder with the outside seawater during the ascent and descent of the snorkeling platform, which helps to maintain the internal temperature.
[0047] Furthermore, the anchoring and lifting system includes a winch, an anchor chain, and a gravity anchor disposed on the seabed; the winch is fixedly installed at the bottom of the hull via an overboard facility mounting bracket, one end of the anchor chain is connected to the winch, and the other end is connected to the gravity anchor, and the lifting and lowering of the snorkeling platform is achieved by the winch raising and lowering the anchor chain; the lower end of the annular protective antifouling cylinder is not higher than the height of the winch and the lowest point of the overboard facility mounting bracket.
[0048] Beneficial effects: By rotating the winch drum, anchor chains can be quickly wound onto the drum or quickly released from the drum, thus enabling rapid raising and lowering of the hull. Furthermore, by using a ring-shaped protective antifouling cylinder whose lower end is no higher than the lowest point of the winch, the entire winch body is completely enclosed within the cylinder. This cylinder restricts the rapid loss of heated seawater, ensuring that the seawater temperature around the entire winch body remains relatively high. This prevents parts of the winch body from being exposed to the cold seawater outside the protective cylinder's coverage area, thus avoiding the attachment of organisms to those parts. Attached Figure Description
[0049] Figure 1 This is a perspective view of the snorkeling platform of the present invention; Figure 2 This is a front view of the snorkeling platform of the present invention; Figure 3This is a right view of the snorkeling platform of the present invention; Figure 4 This is a bottom view of the snorkeling platform of the present invention; Figure 5 This is a schematic diagram of the anti-biofouling device for underwater outboard equipment of marine facilities according to the present invention; Figure 6 This is a schematic diagram from another perspective of the anti-biofouling device for underwater overboard equipment of marine facilities according to the present invention; Figure 7 This is a schematic diagram showing the connection between the heat exchange tube and the fixed support of the anti-biofouling device for underwater outboard equipment of marine facilities according to the present invention; Figure 8 This is a top view (hiding the perforated bottom plate) of the annular protective antifouling cylinder of the anti-biofouling device for underwater outboard equipment of marine facilities according to the present invention. Figure 9 This is a schematic diagram of the fixing bracket for the anti-biofouling device of the underwater outboard equipment of the marine facility of the present invention; Figure 10 This is a schematic diagram showing the concealed annular protective anti-fouling cylinder of the snorkeling platform of the present invention. Figure 11 This is a schematic diagram showing the connection of the winch and the mounting bracket for the outboard facilities of the snorkeling platform of the present invention.
[0050] The components include: 1. Hull; 2. Engine; 3. Circulation pump; 4. Annular protective anti-fouling cylinder; 5. Outboard facility mounting bracket; 6. Drum; 7. Reinforced fixing bracket; 8. Heat exchange tube; 9. Anchor chain; 10. Gravity anchor; 11. High-temperature end of medium circulation pipeline; 12. Low-temperature end of medium circulation pipeline; 13. Air compressor; 14. Water passage window; 15. Fixed base; 16. Fixed buckle plate; 17. Cylinder wall clearance hole; 18. Hull wall clearance hole; 19. Drive unit; 20. Transmission unit; 21. Lowest point of winch; 22. Perforated bottom plate; 23. Avoidance passage. Detailed Implementation
[0051] To address the problems in the background art, the core inventive concept of this invention is: by heating the seawater around the underwater outboard equipment of a marine facility, the temperature of the seawater around the underwater outboard equipment is increased, thereby preventing marine organisms from approaching and attaching to the surface of the mooring and lifting system.
[0052] The present invention will be further described in detail below with reference to embodiments of snorkeling platforms.
[0053] like Figure 1-4As shown, the snorkeling platform of the present invention includes a hull 1 and an anchoring and lifting system for controlling the raising and lowering of the hull 1, which is mounted on the bottom of the hull 1 via an overboard installation bracket 5. The hull 1 comprises, from top to bottom, a semi-ellipsoidal top, a cylindrical wall, and a semi-ellipsoidal bottom connected sequentially. By setting the top and bottom of the hull 1 as arc surfaces, the flow resistance of the hull 1 can be reduced, facilitating rapid raising and lowering of the hull 1. The anchoring and lifting system includes a winch, an anchor chain 9, and a gravity anchor 10 disposed on the seabed. The winch includes a drum 6, a drive unit 19 for driving the drum 6 to rotate, and a braking unit for limiting the rotation of the drum 6, such as... Figure 10 and Figure 11 As shown, the outboard facility mounting bracket 5 is fixedly installed at the bottom of the cabin 1, and the two ends of the drum 6 are rotatably mounted on the outboard facility mounting bracket 5. The outboard facility mounting bracket 5 includes two parallel mounting plates. The drive unit 19 is located in the space between the two mounting plates and fixed on one of the mounting plates. The output shaft of the drive unit 19 and the input shaft of the drum 6 both pass through the same mounting plate and are connected by a transmission unit 20 fixed on the outside of the mounting plate, thereby driving the drum 6 to rotate through the drive unit 19. One end of the anchor chain 9 is connected to a winch, and the other end is connected to the gravity anchor 10. After the gravity anchor 10 is anchored to the seabed, the snorkeling platform is raised or lowered by the winch by winding up and down the anchor chain 9. Specifically, the winch includes a drum 6, a drive unit 19 for driving the drum 6 to rotate, and a braking unit for limiting the rotation of the drum 6. When it is necessary to raise or lower the snorkeling platform, the drive unit 19 drives the drum 6 to rotate forward to wind up the anchor chain 9, thereby pulling down the cabin 1 to overcome buoyancy and achieve submersion. When the snorkeling platform descends to a designated position, the drive unit 19 stops operating, and the braking unit limits the snorkeling platform to a designated depth position by limiting the reverse rotation of the drum 6. Alternatively, the drive unit 19 drives the drum 6 to rotate in the reverse direction to release the anchor chain 9, allowing the cabin 1 to rise under its own buoyancy. When the snorkeling platform rises to a designated position, the drive unit 19 stops operating, and the braking unit limits the forward rotation of the drum 6 to maintain the snorkeling platform at a designated depth position. Obviously, by using the winch system, the anchor chain 9 can be quickly wound onto the winch drum 6, or the anchor chain 9 wound onto the winch drum 6 can be quickly released, thereby enabling the rapid raising and lowering of the cabin 1.
[0054] like Figure 4-6As shown, the bottom of the hull 1 is also fixed with an annular protective antifouling cylinder 4, one side of which is mounted on the periphery of the mooring and lifting system. The outer diameter of the annular protective antifouling cylinder 4 is the same as the outer diameter of the cylindrical hull wall. The connection point between the annular protective antifouling cylinder 4 and the hull 1 is located at the junction of the cylindrical hull wall and the semi-ellipsoidal hull bottom. Setting the outer diameter of the annular protective antifouling cylinder 4 to be the same as the outer diameter of the cylindrical hull wall can optimize the flow field, reduce flow resistance, and improve the stability of the hull 1. At the same time, it reduces the exchange of seawater inside the annular protective antifouling cylinder 4 with the outside seawater during the surfacing and descent of the snorkeling platform, which helps to maintain the internal temperature. In this embodiment, the bottom of the annular protective antifouling cylinder 4 is provided with a perforated bottom plate 22. The perforated bottom plate 22 has avoidance channels 23 for avoiding the anchor chain 9 and the gravity anchor 10, so as to avoid interference between the anchor chain 9, the gravity anchor 10 and the perforated bottom plate 22. By setting a perforated bottom plate 22 at the bottom of the annular protective anti-fouling cylinder 4, radial support can be formed on the bottom of the side wall of the annular protective anti-fouling cylinder 4, so as to avoid the lower end of the side wall of the annular protective anti-fouling cylinder 4 from deforming under the impact of water flow during long-term use, thus affecting the service life of the annular protective anti-fouling cylinder 4.
[0055] In addition, such as Figure 5-7 As shown, the snorkeling platform also includes a cooling system for cooling the heating equipment inside the hull 1. The heat absorption unit of the cooling system is located inside the hull 1, and the heat dissipation unit is located inside the annular protective anti-fouling cylinder 4, forming a heating device for heating the seawater inside the annular protective anti-fouling cylinder 4. The heat absorption unit and the heat dissipation unit form a closed loop through a medium circulation pipeline. A circulation pump 3 is installed on the medium circulation pipeline. The medium circulation pipeline is sealed through the hull wall of the hull 1 so that part of the medium circulation pipeline is located inside the hull and part is located outside the hull (e.g., Figure 1 As shown, the medium circulation pipeline exits the bulkhead through the clearance hole 18, forming the high-temperature end 11 of the medium circulation pipeline, while it exits through the clearance hole 17 in the wall of the annular protective antifouling cylinder 4, forming the low-temperature end 12. The clearance hole 17 allows the medium circulation pipeline to directly enter the annular protective antifouling cylinder 4 through its side wall, without needing to go around to the bottom and then upwards, optimizing the routing of the medium circulation pipeline and reducing its installation difficulty. The annular protective antifouling cylinder 4, together with the heating device installed inside it for heating the seawater within, constitutes an anti-biofouling device.
[0056] like Figure 5-8As shown, the heat dissipation unit is a heat exchange tube 8 arranged around the inner wall of the annular protective antifouling cylinder 4. Specifically, the heat exchange tube 8 is fixed to the inner wall of the annular protective antifouling cylinder 4, and the heat exchange tube 8 is spirally coiled around the axis of the annular protective antifouling cylinder 4. The spiral arrangement can achieve relatively uniform heating of the seawater in the antifouling cylinder in the circumferential direction, thereby ensuring that the temperature difference of the seawater in various parts of the antifouling cylinder is as small as possible, and can be stably maintained above 50°C. This avoids excessive temperature differences in different areas of the seawater in the antifouling cylinder, which would cause the temperature in some areas to be below 50°C, making it impossible to prevent organisms from attaching to the mooring and lifting system. In addition, this pipe arrangement method is simple and efficient, the heat exchange tube 8 is easy to fix and install, and it is also convenient for later disassembly and maintenance.
[0057] In this embodiment, the heat-generating devices include engine 2, air compressor 13 or motor, electrical control cabinet, battery pack, etc. The heat-absorbing unit is a heat exchange coil built into engine 2 and air compressor 13, and the heat exchange coils of engine 2 and air compressor 13 are connected in series. The heat-absorbing unit of the cooling system can absorb the heat emitted by the heat-generating devices of the snorkeling platform. The circulating medium, after absorbing heat and becoming warmer, flows along the medium circulation pipeline to the heat dissipation unit inside the antifouling cylinder and exchanges heat with the seawater in the antifouling cylinder, reducing the temperature of the circulating medium. This allows the cooled circulating medium to be recirculated into the cabin to absorb the heat emitted by the heat-generating devices. The seawater, after heat exchange, becomes warmer, which is equivalent to heating the seawater around the mooring and lifting system through the heat dissipation unit, thereby preventing organisms from approaching and attaching to the mooring and lifting system.
[0058] This invention, through the establishment of a closed-loop medium circulation pipeline, not only cools down the heating equipment inside the cabin but also recovers and utilizes the heat emitted by the heating equipment to heat the seawater around the mooring and lifting system. This helps prevent organisms from attaching to the mooring and lifting system. By using the heat dissipation unit of the cooling system to heat the seawater around the mooring and lifting system, no additional heating device is required. A portion of the original cooling system is used to heat the seawater inside the annular protective antifouling cylinder 4. The overall structure is simple and reduces the overall energy consumption of the snorkeling platform. In addition, the annular protective antifouling cylinder 4 can restrict the seawater inside the cylinder, preventing it from being heated and flowing away rapidly, which would make it impossible to maintain the seawater temperature above 50°C. This is equivalent to the annular protective antifouling cylinder 4 reducing the outward flow of seawater, ensuring a relatively high seawater temperature inside the cylinder. This helps prevent organisms from attaching to the mooring and lifting system. At the same time, the annular protective antifouling cylinder 4 encloses the mooring and lifting system within its cylinder wall, which can significantly reduce the impact of water flow on the mooring and lifting system and improve its service life.
[0059] In addition, such as Figure 10 and Figure 11 As shown, the lower end of the annular protective antifouling cylinder 4 is lower than the lowest point 21 of the overboard facility mounting bracket 5. By adopting the arrangement that the lower end of the annular protective antifouling cylinder 4 is not higher than the lowest point of the winch, it can be ensured that the entire winch body is completely covered by the annular protective antifouling cylinder 4. The annular protective antifouling cylinder 4 has the function of limiting the rapid loss of seawater after the temperature rises, thereby ensuring that the seawater temperature around the entire winch body can be maintained at a high level. This can prevent parts of the winch body structure from being exposed to the cold seawater outside the coverage area of the annular protective antifouling cylinder 4, which could lead to the attachment of organisms to that part of the structure.
[0060] like Figure 5 and Figure 6 As shown, the annular protective antifouling cylinder 4 has several water passage windows 14 evenly distributed circumferentially on its cylinder wall, and the water passage windows 14 are waist-shaped holes arranged vertically along their length. By opening several water passage windows 14 on the cylinder wall of the annular protective antifouling cylinder 4, the exchange efficiency between the seawater inside and outside the annular protective antifouling cylinder 4 can be improved. This allows the seawater heated by the heat exchange tube 8 inside the annular protective antifouling cylinder 4 to exchange with the outside cold water in a controllable manner, thereby ensuring that the temperature of the seawater inside the annular protective antifouling cylinder 4 does not continue to rise to an excessively high level. This avoids the situation where the temperature of the seawater inside the annular protective antifouling cylinder 4 is too high, causing the heat of the circulating medium in the heat exchange tube 8 to be unable to dissipate effectively, leading to the failure of the heat exchange system. This ensures that the circulating medium can be cooled to a sufficiently low temperature inside the heat exchange tube 8 to recirculate into the cabin to absorb the heat emitted by the power source equipment. Obviously, through the above settings, both the heat dissipation of the heat exchange tube and the heating of the seawater inside and near the outside of the cylinder can be taken into account.
[0061] like Figure 8 As shown, several fixing brackets are fixed on the inner wall of the annular protective and anti-fouling cylinder 4. The heat exchange tube 8 is fixedly installed on the inner wall of the annular protective and anti-fouling cylinder 4 through the fixing brackets. The fixing brackets have through holes that are adapted to the shape and size of the heat exchange tube 8, and the heat exchange tube 8 passes through the through holes. The heat exchange tube 8 is fixed to the inner wall of the annular protective and anti-fouling cylinder 4 by the fixing brackets. The heat exchange tube 8 passes through the through holes of the fixing brackets and is firmly fixed, preventing the heat exchange tube 8 from falling off the inner wall of the annular protective and anti-fouling cylinder 4 due to water flow impact.
[0062] Furthermore, such as Figure 5-9As shown, the fixed bracket includes a fixed base 15 and a fixed buckle plate 16 that are detachably and fixedly connected together. Specifically, the fixed base 15 and the fixed buckle plate 16 are provided with corresponding threaded holes. The detachable connection between the fixed base 15 and the fixed buckle plate 16 is achieved by screwing in the bolts that pass through the corresponding threaded holes. Several semi-circular through slots are provided on the opposite side walls of the fixed base 15 and the fixed buckle plate 16, so that when the fixed base 15 and the fixed buckle plate 16 are put together, the two semi-circular through slots at corresponding positions on the fixed base 15 and the fixed buckle plate 16 just surround the through hole for the heat exchange tube 8 to pass through. The fixing bracket adopts a mating design. When installing the heat exchange tube 8, the fixing plate 16 is removed. At this time, the heat exchange tube 8 can be easily inserted directly into the semi-circular through groove of the fixing base 15 from the side. Then, the fixing plate 16 is fastened onto the fixing base 15 to fix the heat exchange tube 8 in the fixing bracket. This eliminates the need to insert the heat exchange tube 8 bit by bit into the through hole along the axial direction of the fixing bracket's through hole, greatly improving the installation efficiency of the heat exchange tube 8. In this embodiment, the fixing bracket is divided into a common fixing bracket and a reinforced fixing bracket 7, such as... Figure 3 As shown, two symmetrically arranged reinforcing brackets 7 are fixed on the inner wall of the annular protective anti-fouling cylinder 4. Ten ordinary fixing brackets are fixed on the inner wall of the annular protective anti-fouling cylinder 4 between the two reinforcing fixing brackets 7. The reinforcing fixing brackets 7 have the same structure as the ordinary fixing brackets, both of which are formed by the fixing base 15 and the fixing buckle 16 being joined together. However, the reinforcing fixing brackets 7 are larger in size than the ordinary fixing brackets, have higher structural strength, and are not easily damaged. The setting of the reinforcing fixing brackets 7 achieves a balance between the manufacturing cost of the fixing brackets and the firmness of the heat exchange tube 8.
[0063] Furthermore, the inner wall of the annular protective anti-fouling cylinder 4 is provided with several vertically arranged reinforcing ribs (not shown in the figure) spaced circumferentially, and the fixed base 15 is welded to the reinforcing ribs. The addition of the reinforcing ribs significantly improves the structural strength of the annular protective anti-fouling cylinder 4 and extends its service life. In addition, in this embodiment, the circulating medium in the medium circulation pipeline is fresh water. In the prior art, the circulating medium in the medium circulation pipeline of snorkeling platforms often uses seawater. Seawater absorbs heat and easily leads to corrosion of the medium circulation pipeline, affecting its service life. This invention uses fresh water as the circulating medium, which can extend the service life of the medium circulation pipeline.
[0064] In the above embodiments, the bottom of the annular protective anti-fouling cylinder 4 is provided with a hollow bottom plate 22, and the hollow bottom plate 22 is provided with an avoidance channel 23 for avoiding the anchor chain 9 and the gravity anchor 10, so as to avoid interference between the anchor chain 9, the gravity anchor 10 and the hollow bottom plate 22. In other embodiments, the lower end of the annular protective anti-fouling cylinder 4 is open. The open lower end can avoid interference between the anchor chain 9 of the mooring lifting system and the lower end of the annular protective anti-fouling cylinder 4, which greatly reduces the probability of contact between the annular protective anti-fouling cylinder 4 and the anchor chain 9, avoids damage to the annular protective anti-fouling cylinder 4 or the anchor chain 9, and ensures that the snorkeling platform can operate stably for a long time.
[0065] In the above embodiments, the heat dissipation unit of the cooling system constitutes a heating device for heating the seawater inside the annular protective antifouling cylinder 4. In other embodiments, the heating device is a waterproof electric heating tube fixed on the inner wall of the annular protective antifouling cylinder 4. The waterproof electric heating tube is evenly distributed along the circumference of the inner wall of the annular protective antifouling cylinder 4 and is powered by an electronic control system. The waterproof electric heating tube directly heats the seawater inside the annular protective antifouling cylinder 4 to raise its temperature.
[0066] In the above embodiments, the heat dissipation unit is a heat exchange tube 8 arranged around the inner wall of the annular protective and anti-fouling cylinder 4. Specifically, the heat exchange tube 8 is coiled and fixed on the inner wall of the annular protective and anti-fouling cylinder 4. In other embodiments, the heat dissipation unit is a heat exchange tube 8 arranged around the inner wall of the annular protective and anti-fouling cylinder 4. Specifically, the heat exchange tube 8 is continuously bent in an S-shape on the inner wall of the annular protective and anti-fouling cylinder 4 and arranged circumferentially along the inner wall of the annular protective and anti-fouling cylinder 4.
[0067] In the above embodiments, the fixed bracket includes a fixed base 15 and a fixed buckle plate 16 that are detachably and fixedly connected together. Specifically, the fixed base 15 and the fixed buckle plate 16 are provided with corresponding threaded holes. The detachable connection between the fixed base 15 and the fixed buckle plate 16 is achieved by screwing the bolts that pass through the corresponding threaded holes. In other embodiments, the fixed base 15 and the fixed buckle plate 16 are fitted with high-strength, corrosion-resistant, and anti-loosening clamps. The clamps surround the fixed base 15 and the fixed buckle plate 16, and both ends are fastened with bolts and anti-loosening washers for locking. The clamps are evenly stressed, resistant to high temperatures and seawater impact, and the connection is firm and reliable.
[0068] In the above embodiments, the water passage window 14 is an oblong hole, while in other embodiments, the water passage window 14 is a circular hole, an elliptical hole, or a polygonal hole.
[0069] In the above embodiments, the cabin 1 comprises, from top to bottom, a semi-ellipsoidal cabin top, a cylindrical cabin wall, and a semi-ellipsoidal cabin bottom connected in sequence. In other embodiments, the cabin 1 comprises, from top to bottom, a hemispherical cabin top, a cylindrical cabin wall, and a hemispherical cabin bottom connected in sequence. In other embodiments, the cabin top is an upwardly convex cone shape, and the cabin bottom is a downwardly convex cone shape or a bottle bottom structure. In other embodiments, the cabin top and cabin bottom can also be other multi-faceted pyramidal structures, and the cabin wall located in the middle can be cylindrical.
[0070] In the above embodiments, the outer diameter of the annular protective anti-fouling cylinder 4 is the same as the outer diameter of the cylindrical chamber wall. In other embodiments, the outer diameter of the annular protective anti-fouling cylinder 4 is slightly larger than the outer diameter of the cylindrical chamber wall, or the outer diameter of the annular protective anti-fouling cylinder 4 is smaller than the outer diameter of the cylindrical chamber wall.
[0071] In the above embodiment, the lower end of the annular protective anti-fouling cylinder 4 is lower than the height of the lowest point of the winch, while in other embodiments, the lower end of the annular protective anti-fouling cylinder 4 is at the same height as the lowest point of the winch.
[0072] In the above embodiments, the heat-generating devices are engine 2 and air compressor 13, with the heat exchange coils of engine 2 and air compressor 13 connected in series. In other embodiments, the heat exchange coils of engine 2 and air compressor 13 are connected in parallel.
[0073] The present invention will be further described in detail below with reference to embodiments of an anti-biofouling device for underwater outboard equipment of marine facilities.
[0074] The structure of the anti-biofouling device for underwater outboard equipment of marine facilities of the present invention is the same as that of the anti-biofouling device composed of an annular protective antifouling cylinder and a heating device in the above-mentioned snorkeling platform, and will not be described again here.
[0075] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features, or organically combine different types of specific implementation methods to create the specific implementation methods shown in the accompanying drawings. Of course, those skilled in the art can also combine other specific implementation methods not shown in the accompanying drawings. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A biofouling prevention device for underwater overboard equipment of marine facilities, characterized in that: It includes an annular protective antifouling cylinder fixedly installed at the bottom of the marine facility, the side wall of the annular protective antifouling cylinder covering the periphery of the underwater overboard equipment, and a heating device for heating the seawater inside the annular protective antifouling cylinder.
2. The anti-biofouling device for underwater overboard equipment of marine facilities according to claim 1, characterized in that: The heat dissipation unit of the cooling system for cooling the heat-generating equipment inside the marine facility is set inside the annular protective anti-fouling cylinder to form the heating device. The medium circulation pipeline for connecting the heat absorption unit and the heat dissipation unit of the cooling system to form a closed loop passes through the annular protective anti-fouling cylinder.
3. The anti-biofouling device for underwater overboard equipment of marine facilities according to claim 2, characterized in that: The heat dissipation unit is a heat exchange tube arranged around the inner wall of the annular protective anti-fouling cylinder.
4. The anti-biofouling device for underwater overboard equipment of marine facilities according to claim 3, characterized in that: The heat exchange tubes are spirally coiled around the axis of the annular protective anti-fouling cylinder.
5. The anti-biofouling device for underwater overboard equipment of marine facilities according to claim 3 or 4, characterized in that: Several fixed brackets are fixed on the inner wall of the annular protective anti-fouling cylinder. The heat exchange tube is fixedly installed on the inner wall of the annular protective anti-fouling cylinder through the fixed brackets. The fixed brackets are provided with through holes that are adapted to the shape and size of the heat exchange tube, and the heat exchange tube passes through the through holes.
6. The anti-biofouling device for underwater overboard equipment of marine facilities according to claim 5, characterized in that: The fixed bracket includes a fixed base and a fixed buckle plate that are detachably and fixedly connected together. Several semi-circular through grooves are provided on the opposite side walls of the fixed base and the fixed buckle plate, so that when the fixed base and the fixed buckle plate are put together, two semi-circular through grooves at corresponding positions on the fixed base and the fixed buckle plate can just surround the through hole for passing through the heat exchange tube.
7. The anti-biofouling device for underwater overboard equipment of marine facilities according to any one of claims 1 to 4, characterized in that: The annular protective anti-fouling cylinder has several water passage windows evenly distributed circumferentially on its cylinder wall.
8. The anti-biofouling device for underwater overboard equipment of marine facilities according to any one of claims 1 to 4, characterized in that: The bottom of the annular protective antifouling cylinder is provided with a hollowed-out bottom plate, and the hollowed-out bottom plate has a avoidance channel for avoiding underwater outboard equipment of marine facilities.
9. The anti-biofouling device for underwater overboard equipment of marine facilities according to any one of claims 2 to 4, characterized in that: The annular protective anti-fouling cylinder has a clearance hole on its side wall for the medium circulation pipeline to pass through.
10. A snorkeling platform, comprising a hull and an anchoring and lifting system for controlling the raising and lowering of the hull, characterized in that: The mooring and lifting system is installed at the bottom of the hull. A ring-shaped protective antifouling cylinder with one side wall is fixed to the bottom of the hull and is located around the perimeter of the mooring and lifting system. The lower end of the ring-shaped protective antifouling cylinder is open. A heating device for heating the seawater inside the ring-shaped protective antifouling cylinder is installed inside the ring-shaped protective antifouling cylinder.
11. The snorkeling platform according to claim 10, characterized in that: It also includes a cooling system for cooling the heat-generating equipment inside the cabin. The heat-absorbing unit of the cooling system is located inside the cabin, and the heat-dissipating unit of the cooling system is located inside the anti-fouling cylinder, which constitutes the heating device. The heat-absorbing unit and the heat-dissipating unit form a closed loop through a medium circulation pipeline, which is sealed through the cabin wall.
12. The snorkeling platform according to claim 11, characterized in that: The heat dissipation unit is a heat exchange tube arranged around the inner wall of the annular protective anti-fouling cylinder.
13. The snorkeling platform according to claim 12, characterized in that: The heat exchange tubes are spirally coiled around the axis of the annular protective anti-fouling cylinder.
14. The snorkeling platform according to claim 12 or 13, characterized in that: Several fixed brackets are fixed on the inner wall of the annular protective anti-fouling cylinder. The heat exchange tube is fixedly installed on the inner wall of the annular protective anti-fouling cylinder through the fixed brackets. The fixed brackets are provided with through holes that are adapted to the shape and size of the heat exchange tube, and the heat exchange tube passes through the through holes.
15. The snorkeling platform according to claim 14, characterized in that: The fixed bracket includes a fixed base and a fixed buckle plate that are detachably and fixedly connected together. Several semi-circular through grooves are provided on the opposite side walls of the fixed base and the fixed buckle plate, so that when the fixed base and the fixed buckle plate are put together, two semi-circular through grooves at corresponding positions on the fixed base and the fixed buckle plate can just surround the through hole for passing through the heat exchange tube.
16. The snorkeling platform according to any one of claims 10 to 13, characterized in that: The annular protective anti-fouling cylinder has several water passage windows evenly distributed circumferentially on its cylinder wall.
17. The snorkeling platform according to any one of claims 10 to 13, characterized in that: The bottom of the annular protective antifouling cylinder is provided with a hollowed-out bottom plate, and the hollowed-out bottom plate has a avoidance channel for avoiding underwater outboard equipment of marine facilities.
18. The snorkeling platform according to any one of claims 10 to 13, characterized in that: The cabin consists of a semi-ellipsoidal cabin top, a cylindrical cabin wall, and a semi-ellipsoidal cabin bottom connected in sequence from top to bottom. The outer diameter of the annular protective anti-fouling cylinder is the same as the outer diameter of the cylindrical cabin wall.
19. The snorkeling platform according to any one of claims 10 to 13, characterized in that: The mooring and lifting system includes a winch, an anchor chain, and a gravity anchor disposed on the seabed. The winch is fixedly installed at the bottom of the hull via an overboard installation bracket. One end of the anchor chain is connected to the winch, and the other end is connected to the gravity anchor. The snorkeling platform is raised and lowered by the winch raising and lowering the anchor chain. The lower end of the annular protective antifouling cylinder is not higher than the lowest point of the winch and the overboard installation bracket.