Offshore platform systems

Abstract

The present invention provides an offshore platform system, comprising: a seabed platform, an operation and maintenance platform, and a mooring cable; the seabed platform is used to be fixed to the seabed, and is connected to the operation and maintenance platform via a mooring cable, so that the operation and maintenance platform can float on the sea surface; the seabed platform includes a bearing member and a buoyancy assembly, one side of the bearing member can carry materials, and the buoyancy assembly is provided on the other side of the bearing member; the buoyancy assembly has a first state and a second state, in the first state, the seabed platform can float on the sea surface, and in the second state, the seabed platform can sink to the seabed. In the offshore platform system of the present invention, the bearing member can carry materials, and the buoyancy of the buoyancy assembly enables the seabed platform to float on the sea surface, facilitating the transportation of the seabed platform. By adjusting the buoyancy of the buoyancy assembly, the seabed platform can sink to the seabed. The operation and maintenance platform facilitates regular maintenance by operating personnel, which is beneficial to reducing construction costs and improving the convenience of operation and maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore platforms, and in particular to an offshore platform system. Background Art

[0002] The seabed observation system can realize long-term, real-time observation of the marine environment, and plays an important role in developing marine resources, warning of marine disasters, and protecting the marine environment.

[0003] Traditional seafloor observation systems typically consist of a deployment frame and a buoy. The buoy floats on the sea surface, while the deployment frame is fixed to the seabed. The buoy and deployment frame are connected by a rope, and the buoy is positioned by an anchor. This structure requires the use of large engineering vessels to lay the submarine cable during offshore construction, which increases construction costs. During the operation and maintenance phase, the small size of the buoy makes it difficult to locate the deployment frame. Operators must dive to the seabed to locate the deployment frame, then retrieve it using an engineering vessel, perform maintenance on the vessel, and then lower it to the seabed, making operation and maintenance inconvenient. Summary of the Invention

[0004] The present invention provides an offshore platform system to solve the problems of high construction cost and inconvenient operation and maintenance in existing seabed observation systems.

[0005] The present invention provides an offshore platform system, comprising: a seabed platform, an operation and maintenance platform, and a mooring cable;

[0006] The submarine platform is used to be fixed on the seabed, the submarine platform is connected to the operation and maintenance platform via the mooring cable, and the operation and maintenance platform can be suspended on the sea surface;

[0007] The seabed platform includes a supporting member and a buoyancy component. One side of the supporting member can carry materials, and the buoyancy component is arranged on the other side of the supporting member. The buoyancy component has a first state and a second state. In the first state, the seabed platform can float on the sea surface, and in the second state, the seabed platform can sink to the seabed.

[0008] According to an offshore platform system provided by the present invention, the buoyancy assembly includes a buoy and a fastener;

[0009] A plurality of floats are arranged on the other side of the carrier, and the floats are connected to the carrier through the fasteners; the floats have a water inlet pipe, and a flow control valve is provided on the water inlet pipe. When the flow control valve is opened, the fluid can flow into the interior of the float.

[0010] According to an offshore platform system provided by the present invention, the offshore platform system further includes a water depth sensor and a controller;

[0011] The water depth sensor and the flow control valve are both connected to the controller; a plurality of the water depth sensors are arranged around the carrier, and the water depth sensors are used to detect the depth information of the seabed platform, and the controller adjusts the opening of the flow control valve according to the depth information.

[0012] According to an offshore platform system provided by the present invention, the seabed platform further includes a support member, one end of the support member is connected to the bearing member, and the other end of the support member is used for anchoring to the seabed.

[0013] According to an offshore platform system provided by the present invention, the bearing component includes a first frame and a first buoyancy layer, and the first buoyancy layer is embedded in the first frame.

[0014] According to an offshore platform system provided by the present invention, the operation and maintenance platform includes a base and a lifting mechanism;

[0015] The lifting mechanism is provided on one side of the base and is used to connect with the deployment system. The lifting mechanism can drive the deployment system to descend or ascend, so that the deployment system sinks to the seabed or is lifted onto the base.

[0016] According to an offshore platform system provided by the present invention, the base includes a second frame and a second buoyancy layer, and the second buoyancy layer is embedded in the second frame.

[0017] According to an offshore platform system provided by the present invention, the lifting mechanism includes a drum, a mooring cable and a driving member;

[0018] The mooring cable is wound around the drum, and the free end of the mooring cable is connected to the deployment system. The driving member is used to drive the drum to rotate, so as to achieve the ascent or descent of the deployment system.

[0019] According to an offshore platform system provided by the present invention, the base is provided with a first opening, the supporting member is provided with a second opening, and the first opening and the second opening are arranged opposite each other in the vertical direction; the mooring cable can be passed through the first opening and the second opening, and the first opening and the second opening are used to guide the rise and fall of the deployment system.

[0020] According to an offshore platform system provided by the present invention, the seabed platform further comprises a limiting member, which is arranged in a circumferential direction of the second opening and is arranged in an inclined manner on one side of the supporting member.

[0021] The offshore platform system provided by the present invention comprises a seabed platform including a bearing member and a buoyancy assembly. The bearing member can carry materials, and the buoyancy of the buoyancy assembly enables the seabed platform to float on the sea surface, facilitating the transportation of the seabed platform. The seabed platform can be sunk to the seabed by adjusting the buoyancy of the buoyancy assembly. The operation and maintenance platform facilitates operators to perform regular maintenance of the offshore platform system. This offshore platform system is beneficial for reducing construction costs and improving the convenience of operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a structural schematic diagram of the offshore platform system provided by the present invention;

[0024] Figure 2 This is one of the structural schematic diagrams of the submarine platform provided by the present invention;

[0025] Figure 3 This is the second structural diagram of the submarine platform provided by the present invention;

[0026] Figure 4 It is a structural diagram of the operation and maintenance platform provided by the present invention;

[0027] Figure 5 It is a schematic diagram of the assembly of the deployment system provided by the present invention;

[0028] Figure 6 This is a schematic diagram of the transportation of the submarine platform provided by the present invention;

[0029] Figure 7 This is a transport diagram of the operation and maintenance platform provided by the present invention;

[0030] Figure numerals: 1: operation and maintenance platform; 101: base; 102: lifting mechanism; 1021: drum; 1022: mooring cable; 1023: driving part; 103: fence; 104: counterweight; 105: warning light; 106: navigation light; 2: mooring cable; 3: submarine platform; 301: bearing member; 302: buoyancy assembly; 3021: buoy; 3022: U-shaped clamp; 303: support member; 3031: support leg; 3032: anchor seat; 3033: lifting eye screw; 304: limit member; 4: deployment system; 401: junction box; 402: camera assembly; 403: sensor assembly; 404: deployment frame; 5: submarine cable; 6: tugboat; 7: towline. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0033] The following combination Figures 1 to 7 An offshore platform system according to an embodiment of the present invention is described.

[0034] like Figure 1 、 Figure 2 and Figure 5 As shown, the offshore platform system provided by the embodiment of the present invention includes: a seabed platform 3, an operation and maintenance platform 1 and a mooring cable 2; the seabed platform 3 is used to be fixed to the seabed, and the seabed platform 3 is connected to the operation and maintenance platform 1 through the mooring cable 2, and the operation and maintenance platform 1 can be suspended on the sea surface; the seabed platform 3 includes a bearing member 301 and a buoyancy component 302, one side of the bearing member 301 can carry materials, and the buoyancy component 302 is arranged on the other side of the bearing member 301; the buoyancy component 302 has a first state and a second state, in the first state, the seabed platform 3 can float on the sea surface, and in the second state, the seabed platform 3 can sink to the seabed.

[0035] Specifically, the offshore platform system includes a seabed platform 3, an operation and maintenance platform 1, and a mooring cable 2. The seabed platform 3 is fixed to the seabed, while the operation and maintenance platform 1 is suspended above the sea surface. The operation and maintenance platform 1 is connected to the seabed platform 3 via the mooring cable 2, which can be a steel cable. The operation and maintenance platform 1 is used to provide a work platform for operators to inspect and repair the deployment system 4 submerged on the seabed. The operation and maintenance platform 1 can be connected to the deployment system 4 via a steel cable. The deployment system 4 includes a deployment frame 404, on which is fixedly mounted a junction box 401, a camera assembly 402, and a sensor assembly 403. The camera assembly 402 and the sensor assembly 403 are used to collect various parameters of the seabed. A submarine cable 5 is laid on the seabed, with one end of the submarine cable 5 connected to the junction box 401 and the other end of the submarine cable 5 connected to a base station on the coast.

[0036] The submarine platform 3 includes a support member 301 and a buoyancy assembly 302. The size of the support member 301 is set according to actual needs. The support member 301 can be a square body with a relative top and bottom surface. The top surface of the support member 301 can be used to place the submarine cable 5 to be laid and construction tools and other components. The buoyancy assembly 302 is fixed to the bottom surface of the support plate. The buoyancy assembly 302 can be a buoy or a pontoon, etc., and the buoyancy assembly 302 has a first state and a second state. In the first state, the buoyancy of the buoyancy assembly 302 is a constant value, and the buoyancy of the buoyancy assembly 302 enables the submarine platform 3 to float on the sea surface. In the second state, the buoyancy of the buoyancy assembly 302 can gradually decrease. As the buoyancy gradually decreases, the submarine platform 3 gradually sinks until it sinks to the seabed.

[0037] The following describes the process of building the offshore platform system. The submarine cable 5 to be laid and components such as construction tools are placed on the carrier 301. At this time, the buoyancy component 302 is in the first state. The buoyancy of the buoyancy component 302 enables the submarine platform 3 to float on the sea surface. The submarine platform 3 and components such as the submarine cable 5 to be laid placed on the submarine platform 3 can be towed to the construction location in the sea area by a small tugboat. The operation and maintenance platform 1 can also be towed to the construction location in the sea area by a small tugboat. After the submarine platform 3 and the operation and maintenance platform 1 are towed to the construction location, one end of the steel cable is tied to the submarine platform 3. The number of steel cables is set according to actual needs. For example, the number of steel cables is four, and the four steel cables are respectively connected to the four end positions of the carrier 301. After one end of the steel cable is tied to the bearing member 301, the buoyancy component 302 is in the second state and begins to sink the seabed platform 3. As the buoyancy of the buoyancy component 302 gradually decreases, the seabed platform 3 gradually sinks until the seabed platform 3 sinks to the seabed. After the seabed platform 3 sinks to the seabed, the seabed platform 3 can be fixed to the seabed by anchoring. After the seabed platform 3 is fixed to the seabed, the other end of the steel cable is tied to the operation and maintenance platform 1. Thus, one end of the steel cable is connected to the seabed platform 3, and the other end of the steel cable is connected to the operation and maintenance platform 1. At this time, the steel cable is in a relaxed state, ensuring that the operation and maintenance platform 1 is reliably suspended on the sea surface. The seabed platform 3, the operation and maintenance platform 1, the mooring cable 2, and the submarine cable 5 to be laid can be towed to the construction location in the sea area by a small tugboat, which is conducive to reducing the construction cost of the offshore platform system.

[0038] Subsea platform 3 serves as an anchor for operation and maintenance platform 1, allowing it to remain suspended permanently within a target area on the sea surface. During regular maintenance of the offshore platform system, operators arrive at operation and maintenance platform 1 and lift deployment system 4 from the seabed onto operation and maintenance platform 1. From operation and maintenance platform 1, operators can perform maintenance on the observation system mounted on deployment rack 404. For example, these maintenance tasks can include replacing batteries or damaged electrical components in docking box 401, ensuring reliable operation of the offshore platform system.

[0039] In an embodiment of the present invention, the submarine platform 3 includes a supporting member 301 and a buoyancy assembly 302. The supporting member 301 can carry materials. The buoyancy of the buoyancy assembly 302 enables the submarine platform 3 to float on the sea surface, which is convenient for the transportation of the submarine platform 3. By adjusting the buoyancy of the buoyancy assembly 302, the submarine platform 3 can sink to the seabed. The operation and maintenance platform 1 facilitates the operators to perform regular maintenance of the offshore platform system. This offshore platform system is beneficial to reducing construction costs and improving the convenience of operation and maintenance.

[0040] like Figure 3 As shown, in an optional embodiment, the buoyancy assembly 302 includes a float 3021 and a fastener; multiple floats 3021 are arranged on the other side of the support member 301, and the floats 3021 are connected to the support member 301 through fasteners; the float 3021 has a water inlet pipe, and a flow control valve is provided on the water inlet pipe. When the flow control valve is opened, the fluid can flow into the interior of the float 3021.

[0041] Specifically, buoyancy assembly 302 includes buoys 3021 and fasteners. Buoys 3021 are secured to the bottom surface of carrier 301 via fasteners. The number of buoys 3021 is determined based on actual needs. For example, if there are four buoys 3021, they are spaced around the bottom surface of carrier 301. For example, if there are six buoys 3021, they are spaced evenly around the bottom surface of carrier 301. Buoys 3021 are secured to the bottom surface of carrier 301 via fasteners, which may be U-shaped clamps 3022. Each buoy 3021 is secured to the bottom surface of carrier 301 via multiple U-shaped clamps 3022.

[0042] Buoy 3021 has a water inlet pipeline equipped with a flow control valve. The water inlet pipeline can be located on the end surface of buoy 3021. The flow control valve can be an electrically operated valve. When the flow control valve is opened, seawater can flow into buoy 3021 along the water inlet pipeline. When submarine platform 3 reaches its construction location in the sea and needs to be lowered toward the seabed, the flow control valve is first opened, allowing seawater to flow into buoy 3021 through the water inlet pipeline. As the seawater gradually flows into buoy 3021, the buoyancy of buoy 3021 gradually decreases, and submarine platform 3 gradually sinks toward the seabed as the buoyancy decreases, until it reaches the seabed. After sinking to the seabed, submarine platform 3 can be anchored to the target location on the seabed using anchors.

[0043] When the buoy 3021 is in the first state, i.e., the sealed state, the buoy 3021 can provide the required buoyancy for towing the submarine platform 3; when the submarine platform 3 reaches the construction location in the sea area, the valve of the flow control valve of the buoy 3021 is opened, the buoy 3021 is in the second state, seawater flows into the buoy 3021, the buoyancy of the buoy 3021 gradually decreases, and the gravity of the submarine platform 3 gradually increases. The submarine platform 3 sinks to the seabed under the action of gravity, and does not require the aid of other installation equipment, which is conducive to reducing construction costs.

[0044] In an embodiment of the present invention, the buoy 3021 is fixed to the bottom surface of the supporting member 301 by fasteners. By relying on the change of the buoyancy of the buoy 3021, the submarine platform 3 can float on the sea surface and sink to the seabed when the buoyancy is reduced, thereby ensuring the reliability of the transportation and sinking of the submarine platform 3.

[0045] In an optional embodiment, the offshore platform system also includes a water depth sensor and a controller; the water depth sensor and the flow control valve are both connected to the controller; multiple water depth sensors are arranged around the carrier 301, and the water depth sensor is used to detect the depth information of the seabed platform 3, and the controller adjusts the opening of the flow control valve according to the depth information.

[0046] Specifically, the offshore platform system also includes a water depth sensor and a controller. The water depth sensor is mounted on the seabed platform 3. The number of water depth sensors is determined based on actual needs. For example, four water depth sensors are mounted at the four corners of the support member 301 along its circumference. The water depth sensors are used to detect the depth of the seabed platform 3 relative to sea level. The water depth sensor and the flow control valve on the buoy 3021 are both connected to the controller, which adjusts the opening of the flow control valve spool based on the depth information detected by the water depth sensor.

[0047] As the submarine platform 3 sinks toward the seabed, the water depth sensor monitors the depth of the submarine platform 3 in real time. For example, the bottom surface of the support member 301 is divided into four regions, each of which is equipped with a buoy 3021. The four regions are defined as the first region, the second region, the third region, and the fourth region. A water depth sensor is installed in each of the first, second, third, and fourth regions, and the four water depth sensors simultaneously monitor the depth of the four regions. For example, if the depth information in the first region is less than the depth information in other locations, it indicates that the first region of the submarine platform 3 is tilting upward relative to the other regions. In this case, the controller increases the opening of the valve core of the flow control valve on the buoy 3021 in the first region, increasing the amount of water entering the buoy 3021 in the first region, causing the first region to sink faster until the four regions are in equilibrium.

[0048] During the sinking process of the submarine platform 3, the water depth sensor detects the depth information of multiple positions of the submarine platform 3 in real time. The controller controls the opening size of the valve core of the flow control valve on the buoy 3021 according to the water depth data, and then adjusts the water inlet flow of the buoy 3021 corresponding to each position, effectively avoiding the submarine platform 3 from tipping over due to uneven force during the sinking process, and ensuring the smooth sinking of the submarine platform 3.

[0049] In an embodiment of the present invention, during the sinking process of the submarine platform 3, the water depth sensor detects the depth information of the submarine platform 3 in real time, and the controller adjusts the opening of the flow control valve on the buoy 3021 according to the depth information, thereby controlling the water inlet flow of the buoy 3021 to ensure the smooth sinking of the submarine platform 3.

[0050] like Figure 2 and Figure 3 As shown, in an optional embodiment, the seabed platform 3 further includes a support member 303 , one end of the support member 303 is connected to the bearing member 301 , and the other end of the support member 303 is used for anchoring to the seabed.

[0051] Specifically, support member 303 is arranged at a certain inclination angle with support member 301. The number of support members 303 is set according to actual needs. For example, there are four support members 303, and the four support members 303 are evenly distributed along the circumference of support member 301. Support members 303 help increase the support area of ​​subsea platform 3 and enhance the stability of subsea platform 3 fixed to the seabed. Support member 303 includes a leg 3031 and an anchor seat 3032. One end of leg 3031 is connected to the end of support member 301, and the other end of leg 3031 is connected to anchor seat 3032. Anchor seat 3032 is used to anchor to the seabed.

[0052] A lifting eye screw 3033 is provided on the support leg 3031, and the lifting eye screw 3033 is provided at the end of the support leg 3031 away from the supporting member 301. One end of the steel cable can be fastened to the lifting eye screw 3033, and the other end of the steel cable is fastened to the operation and maintenance platform 1, which is beneficial to increase the opening angle of the steel cable relative to the center line of the operation and maintenance platform 1, and thus is beneficial to ensuring the stability of the operation and maintenance platform 1 on the sea surface.

[0053] In an embodiment of the present invention, multiple support members 303 are arranged in an inclined manner around the supporting member 301, and the seabed platform 3 is fixed to the seabed through the multiple support members 303 to ensure the stability of the seabed platform 3. One end of the mooring cable 2 is connected to the end of the support leg 3031 away from the supporting member 301, and the other end of the mooring cable 2 is connected to the operation and maintenance platform 1, which is beneficial to the stability of the operation and maintenance platform 1.

[0054] In an optional embodiment, the supporting member 301 includes a first frame and a first buoyancy layer, and the first buoyancy layer is embedded in the first frame.

[0055] Specifically, the bearing member 301 can be a square body, and the bearing member 301 includes a first frame and a first buoyancy layer. The first frame can be formed by welding together steel sections such as angle steel, channel steel or I-beam to form a frame structure. The first frame is formed by welding together multiple steel sections to form a frame structure, and the frame structure is formed with multiple accommodating spaces. The first buoyancy layer includes multiple buoyancy blocks, and the buoyancy blocks are made of buoyancy materials. For example, the buoyancy materials can be polyurethane foam materials, copolymer foam materials, composite foam materials or synthetic composite foam materials. The size of the buoyancy blocks matches the size of the accommodating space, and the buoyancy blocks are embedded in the accommodating space. The buoyancy blocks can be connected to the frame structure by fasteners, and the fasteners can be screws.

[0056] The first frame ensures that the bearing component 301 has sufficient strength to carry materials such as the submarine cable 5 and construction tools; the first buoyancy layer gives the bearing component 301 a certain buoyancy, and the buoyancy provided by the buoy 3021 and the first buoyancy layer ensure the reliability of the submarine platform 3 floating on the sea surface.

[0057] In the embodiment of the present invention, the supporting member 301 includes a first frame and a first buoyancy layer, which can not only ensure the structural strength of the submarine platform 3, but also further enhance the buoyancy of the submarine platform 3 and ensure the reliability of the towing of the submarine platform 3.

[0058] like Figure 4 As shown, in an optional embodiment, the operation and maintenance platform 1 includes a base 101 and a lifting mechanism 102; the lifting mechanism 102 is arranged on one side of the base 101, and the lifting mechanism 102 is used to connect with the deployment system 4. The lifting mechanism 102 can drive the deployment system 4 to descend or rise, so that the deployment system 4 sinks to the seabed or is lifted onto the base 101.

[0059] Specifically, the operation and maintenance platform 1 includes a base 101 and a lifting mechanism 102, which is mounted on the top surface of the base 101. A work area is formed on the base 101, and the size of the base 101 is sufficient for operators to perform operation and maintenance tasks on the operation and maintenance platform 1. The lifting mechanism 102 can sink the deployment system 4 to the seabed and simultaneously lift the deployment system 4 to the surface.

[0060] In existing technology, the deployment frame on the seabed is connected to the buoy on the sea. The buoy is a small target, so finding the target buoy during operation and maintenance is time-consuming. The buoy and the seabed deployment frame are not in the same vertical position, making it difficult to locate the deployment frame. When inspecting and maintaining the platform, workers are transported to the buoy position on the sea surface by large ships. The workers dive to the seabed, hook the lifting rope to the deployment frame's lifting ring, and then use the lifting equipment to salvage the deployment frame from the seabed. The workers then perform maintenance on the large ship on components such as the docking box installed on the deployment frame, resulting in high operation and maintenance costs.

[0061] In the present invention, when it is necessary to perform operation and maintenance operations on the deployment system 4, the operating personnel can take a motor boat to reach the operation and maintenance platform 1, the operating personnel board the operation and maintenance platform 1, and lift the deployment system 4 onto the operation and maintenance platform 1 through the lifting mechanism 102. The operating personnel inspect and maintain the docking box 401 and other components on the operation and maintenance platform 1. After the maintenance is completed, the deployment system 4 is sunk to the seabed through the lifting mechanism 102.

[0062] In an embodiment of the present invention, the lifting mechanism 102 is installed on the top surface of the base 101. The lifting mechanism 102 can lift the deployment system 4 on the seabed to the operation and maintenance platform 1. The operating personnel perform operation and maintenance operations on the operation and maintenance platform 1, which is conducive to reducing the operation and maintenance costs of the offshore platform system.

[0063] In an optional embodiment, the base 101 includes a second frame and a second buoyancy layer, and the second buoyancy layer is embedded in the second frame.

[0064] Specifically, the base 101 can be a square body, and the base 101 includes a second frame and a second buoyancy layer. The second frame can be welded together by angle steel, channel steel or I-beam to form a frame structure. The second frame is welded together by multiple steel sections to form a frame structure, and the frame structure is formed with multiple accommodating spaces. The second buoyancy layer includes multiple buoyancy blocks, and the buoyancy blocks are made of buoyancy materials. For example, the buoyancy materials can be polyurethane foam materials, copolymer foam materials, composite foam materials or synthetic composite foam materials. The size of the buoyancy blocks matches the size of the accommodating space, and the buoyancy blocks are embedded in the accommodating space. The buoyancy blocks can be connected to the frame structure by fasteners, and the fasteners can be screws. The second frame ensures that the base 101 has sufficient strength; the second buoyancy layer gives the base 101 a certain buoyancy, ensuring that the operation and maintenance platform 1 can float on the sea surface.

[0065] like Figure 6 and Figure 7 As shown, during the construction phase, a small tugboat 6 can be used to tow the subsea platform 3 and the operation and maintenance platform 1 to their respective construction locations in the sea. The tugboat 6 is connected to the subsea platform 3 or the operation and maintenance platform 1 via a towline 7. Once the subsea platform 3 and the operation and maintenance platform 1 are towed to their construction locations in the sea, one end of the mooring cable 2 is connected to the eyebolt 3033 on the leg 3031 of the subsea platform 3. The flow control valve on the buoy 3021 is opened, and the opening of the flow control valve spool is adjusted via a controller to ensure that the subsea platform 3 is smoothly lowered to the seabed. The leg 3031 is then secured to the seabed via anchors. The other end of the mooring cable 2 is connected to a hook on the operation and maintenance platform 1, and the tension of the mooring cable 2 is adjusted to maintain a slack state, ensuring that the operation and maintenance platform 1 remains reliably suspended in the target area of ​​the sea surface above the subsea platform 3. One end of the submarine cable 5 is connected to the junction box 401, which is secured to the deployment frame 404. The deployment system 4 is sunk to the seabed by the lifting mechanism 102 . When maintenance is required, the deployment system 4 is lifted onto the base 101 by the lifting mechanism 102 .

[0066] Furthermore, a fence 103 is provided along the circumference of the base 101 . The fence 103 is composed of a plurality of horizontal bars and vertical bars. When the operators perform operation and maintenance work on the base 101 , the fence 103 helps to ensure the safety of the operators.

[0067] A counterweight block 104 is provided on the bottom surface of the base 101 , and the number of the counterweight blocks 104 is set according to actual needs. For example, a counterweight block 104 is provided at each end of the base 101 to ensure the stability of the operation and maintenance platform 1 suspended on the sea surface.

[0068] The top surface of the fence 103 is provided with warning lights 105 and navigation lights 106. The number of warning lights 105 and navigation lights 106 is set according to actual needs. For example, one end of the fence 103 is provided with a warning light 105 and two navigation lights 106, and the other end of the fence 103 is also provided with a warning light 105 and two navigation lights 106.

[0069] In the embodiment of the present invention, the base 101 includes a second frame and a second buoyancy layer, which can not only ensure the structural strength of the operation and maintenance platform 1, but also ensure that the operation and maintenance platform 1 can be reliably suspended on the sea surface.

[0070] like Figure 4 As shown, in an optional embodiment, the lifting mechanism 102 includes a drum 1021, a mooring cable 1022 and a driving member 1023; the mooring cable 1022 is wound around the drum 1021, the free end of the mooring cable 1022 is connected to the deployment system 4, and the driving member 1023 is used to drive the drum 1021 to rotate to achieve the rise or fall of the deployment system 4.

[0071] Specifically, the lifting mechanism 102 includes a drum 1021, a mooring cable 1022, a driver 1023, and a frame. The frame is fixed to the base 101. The drum 1021, mooring cable 1022, and driver 1023 are mounted on the frame. The mooring cable 1022 is wound around the drum 1021, and the free end of the mooring cable 1022 is connected to the deployment system 4. The driver 1023 is used to drive the drum 1021 to rotate forward or reverse to achieve the cable-winding operation or cable-winding operation of the mooring cable 1022. The driver 1023 can be a motor.

[0072] For example, the motor drives the drum 1021 to rotate in a clockwise direction, and the deployment system 4 is placed on the seabed through a cable-releasing operation. After the deployment system 4 sinks to the seabed, the tightness of the mooring cable 1022 is adjusted so that when the operation and maintenance platform 1 drifts in a local area on the sea surface, the mooring cable 1022 between the operation and maintenance platform 1 and the deployment system 4 is always in a loose state, thereby avoiding pulling the deployment system 4 out of the seabed and ensuring the reliable operation of the offshore platform system. The motor drives the drum 1021 to rotate in a counterclockwise direction, and the deployment system 4 is lifted onto the operation and maintenance platform 1 through a reaming operation. The driving member 1023 can also be a handle, which drives the drum 1021 to rotate in a clockwise or counterclockwise direction by turning the handle to realize the cable-reeling operation or cable-releasing operation of the mooring cable 1022.

[0073] In an embodiment of the present invention, the mooring cable 1022 is wound around the drum 1021, the free end of the mooring cable 1022 is connected to the deployment system 4, and the driving member 1023 drives the drum 1021 to rotate, driving the deployment system 4 to descend or rise, so that the deployment system 4 can sink to the seabed or be lifted to the operation and maintenance platform 1, which is beneficial to reducing the cost of operation and maintenance operations and improving the convenience of operation and maintenance operations.

[0074] like Figures 1 to 4 As shown, in an optional embodiment, the base 101 is provided with a first opening, the supporting member 301 is provided with a second opening, and the first opening and the second opening are arranged opposite each other in the vertical direction; the mooring cable 1022 can be passed through the first opening and the second opening, and the first opening and the second opening are used to guide the rise and fall of the deployment system 4.

[0075] Specifically, a first opening is provided on the base 101, and a second opening is provided on the supporting member 301, and the orthographic projection of the first opening is located in the area where the second opening is located. The first opening is located directly below the drum 1021. During the sinking of the deployment system 4, the mooring cable 1022 passes through the area where the first opening is located, and further passes through the area where the second opening is located, until the deployment system 4 sinks to the target position on the seabed. Due to the fluidity of seawater, when the mooring cable 1022 moves in the vertical direction, the mooring cable 1022 will drift, and the moving trajectory of the mooring cable 1022 will be offset relative to the target trajectory. During the sinking or lifting of the deployment system 4, the first opening and the second opening can limit the floating range of the mooring cable 1022, guide the mooring cable 1022 to move in the vertical direction, ensure that the deployment system 4 is accurately placed at the target position on the seabed, or smoothly lift the deployment system 4 to the operation and maintenance platform 1, which is conducive to the convenience of operation and maintenance operations.

[0076] The first opening and the second opening are arranged opposite to each other in the vertical direction, ensuring that the mooring cable 1022 can rise or fall in the vertical direction. At the same time, there is no need to suspend the lifting mechanism 102 outside the operation and maintenance platform 1, which is conducive to the compactness of the platform structure.

[0077] like Figure 1 、 Figure 2 and Figure 3 As shown, in an optional embodiment, the seabed platform 3 further includes a limiting member 304 , which is arranged in the circumference of the second opening and is inclined on one side of the supporting member 301 .

[0078] Specifically, the second opening is in the form of a U-shaped opening or a trapezoidal opening, for example, the second opening being in the form of a U-shaped opening, the second opening having three connected sections, and a stopper 304 disposed at the second opening. The stopper 304 comprises three stopper plates connected in sequence. The three stopper plates are respectively connected to the three sections of the second opening, and the stopper plates are disposed in an inclined manner on the top surface of the support member 301. The three stopper plates are connected in sequence, and the three stopper plates and the second opening form a trumpet-shaped passage. The area enclosed by the second opening and the stopper 304 can further limit the floating range of the mooring cable 1022, allowing the mooring cable 1022 to move in the vertical direction, ensuring that the deployment system 4 can smoothly ascend or descend in the vertical direction.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An offshore platform system, characterized in that: include: Subsea platforms, operation and maintenance platforms, mooring lines, water depth sensors and controllers; The submarine platform is used to be fixed to the seabed and serves as an anchor for the operation and maintenance platform. The submarine platform is connected to the operation and maintenance platform via the mooring cable, and the operation and maintenance platform can be suspended on the sea surface. The seabed platform includes a load-bearing member and a buoyancy assembly. One side of the load-bearing member is capable of carrying materials, and the buoyancy assembly is provided on the other side of the load-bearing member. The buoyancy assembly has a first state and a second state. In the first state, the seabed platform can float on the sea surface. In the second state, the seabed platform can sink to the seabed. The buoyancy assembly includes a buoy and a fastener; a plurality of buoys are provided on the other side of the carrier, and the buoys are connected to the carrier via the fastener; the buoys have a water inlet pipe, and a flow control valve is provided on the water inlet pipe. When the flow control valve is opened, fluid can flow into the interior of the buoy; The water depth sensor and the flow control valve are both connected to the controller; a plurality of the water depth sensors are arranged around the carrier, and the water depth sensors are used to detect the depth information of the seabed platform, and the controller adjusts the opening of the flow control valve according to the depth information; The bottom surface of the carrier is divided into four areas, each of which is equipped with a buoy, and the four areas are defined as a first area, a second area, a third area, and a fourth area; a water depth sensor is installed in each of the first area, the second area, the third area, and the fourth area, and the depth information of the four areas is simultaneously detected by the four water depth sensors; The submarine platform also includes a support member, one end of the support member is connected to the bearing member, and the other end of the support member is used to anchor to the seabed; the support member and the bearing member are arranged at a certain inclination angle, and there are multiple support members, and the multiple support members are evenly distributed along the circumference of the bearing member to increase the support area of ​​the submarine platform, and the support member includes a support leg and an anchor seat, one end of the support leg is connected to the end of the bearing member, and the other end of the support leg is connected to the anchor seat, and the anchor seat is used to be anchored to the seabed; a lifting eye screw is provided on the support leg, and the lifting eye screw is provided at the end of the support leg away from the bearing member, one end of the steel cable is fastened to the lifting eye screw, and the other end of the steel cable is fastened to the operation and maintenance platform.

2. The offshore platform system according to claim 1, characterized in that: The seabed platform further includes a support member, one end of which is connected to the bearing member, and the other end of which is used for anchoring to the seabed.

3. The offshore platform system according to claim 1, characterized in that: The bearing component includes a first frame and a first buoyancy layer, and the first buoyancy layer is embedded in the first frame.

4. The offshore platform system according to claim 1, characterized in that: The operation and maintenance platform includes a base and a lifting mechanism; The lifting mechanism is provided on one side of the base and is used to connect with the deployment system. The lifting mechanism can drive the deployment system to descend or ascend, so that the deployment system sinks to the seabed or is lifted onto the base.

5. The offshore platform system according to claim 4, characterized in that: The base includes a second frame and a second buoyancy layer, and the second buoyancy layer is embedded in the second frame.

6. The offshore platform system according to claim 4, characterized in that: The lifting mechanism includes a drum, a mooring cable and a driving member; The mooring cable is wound around the drum, and the free end of the mooring cable is connected to the deployment system. The driving member is used to drive the drum to rotate, so as to achieve the ascent or descent of the deployment system.

7. The offshore platform system according to claim 6, characterized in that: The base is provided with a first opening, and the supporting member is provided with a second opening, and the first opening and the second opening are arranged opposite each other in the vertical direction; the mooring cable can be passed through the first opening and the second opening, and the first opening and the second opening are used to guide the rise and fall of the deployment system.

8. The offshore platform system according to claim 7, characterized in that: The seabed platform further includes a limiting member, which is arranged in the circumference of the second opening and is arranged in an inclined shape on one side of the supporting member.

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