Ocean floating platform mooring system with vertical propellers assisting in power positioning storage

Abstract

The invention discloses an ocean floating platform mooring system with vertical propellers assisting in power positioning storage. Belongs to the field of ocean mooring systems, and comprises a DP positioning reserve floating platform, an energy and control center, a stress monitor, an anchor chain, an anchor pile and the like, and the operation steps are as follows: a three-component sensor monitors the stress of the anchor chain, and the stress information of the anchor chain is transmitted to the energy and control center through a signal transmitting module; a processor of the energy and control center judges the orientation of the anchor chain with the maximum stress; the rotating ring is controlled to rotate to drive the direction of the tail end opening of the positioning flow guide cover to be opposite to the direction of the anchor chain with the largest stress so as to partially counteract the stress of the anchor chain; the processor judges the error between the anchor chain with the maximum stress and the average stress of the anchor chain and linearly adjusts the rotating speed of the positioning propeller based on the error value. The propeller and the flow guide cover are matched with each other, so that construction and application are facilitated; and meanwhile, complex sea wave loads are adapted by combining intelligent means, the stress of the sea anchor chain is reduced, and the stability of the platform is improved.

Description

Technical Field

[0001] The present invention belongs to the field of marine mooring systems, and relates to a mooring system for a marine floating platform with vertical propeller-assisted dynamic positioning reserve; in particular, it relates to a mooring system and method for a marine floating platform with vertical propeller-assisted dynamic positioning reserve. Background Art

[0002] With the continuous increase in marine resource exploitation activities, marine floating platforms have become important facilities in fields such as deep-sea oil and gas development and offshore wind power. These platforms usually face harsh marine environments, especially natural factors such as waves, wind, and ocean currents, which often have a great impact on the stability and safety of the platforms. Therefore, how to improve the stability of marine floating platforms and reduce the impact on the platforms under extreme weather and marine environmental conditions has become an important research direction in the field of ocean engineering.

[0003] Traditional mooring systems for floating platforms usually rely on fixed methods such as anchor piles and anchor chains to maintain the stability of the platforms. However, in complex marine environments, these traditional mooring systems are difficult to flexibly cope with wave loads and wind changes, easily resulting in uneven stress on the anchor chains, and even breakage or instability, affecting the safe operation of the platforms. In addition, traditional mooring methods often lack sufficient intelligent control means, resulting in the inability of the platforms to quickly adjust when facing complex working conditions such as waves and wind, reducing the adaptability and flexibility of the mooring system.

[0004] In recent years, with the development of dynamic positioning technology (DP), dynamic positioning reserve floating platforms, as a new type of floating platform system, have gradually become an important solution to this problem. The DP positioning system realizes precise control of the position and attitude of the platform by adopting technologies such as propellers and fairings, so as to maintain the stability and position of the platform unchanged under complex sea conditions such as waves and wind. Compared with traditional anchor chain mooring systems, the DP positioning system has higher adaptability and flexibility, can quickly respond to changes in the external environment, reduces the uneven stress on the anchor chains, and improves the safety of the platform; however, although the DP positioning system has significant advantages in improving the stability of the platform, in some deep-sea areas or places far from the shore, traditional DP systems still face problems such as energy supply and equipment maintenance. In order to further improve the stability and intelligent control ability of the platform, optimizing the system by combining intelligent means has become an important direction for improving the performance of marine platform mooring systems. Summary of the Invention

[0005] In view of the above problems, the object of the present invention is to propose a mooring system for an ocean floating platform with vertical propeller-assisted dynamic positioning reserve; by combining the cooperation of the propeller and the fairing, the system realizes simple construction and application. At the same time, combined with intelligent control technology, it can automatically adjust the positioning state of the platform according to the real-time ocean wave load, reduce the stress on the anchor chain, and further improve the stability of the platform. As the core of the system, the energy and control center can coordinate and control various equipment of the platform to ensure that the system can operate efficiently and stably under different sea conditions.

[0006] The technical solution of the present invention is as follows: A mooring system for an ocean floating platform with vertical propeller-assisted dynamic positioning reserve according to the present invention includes a DP positioning reserve floating platform, and the DP positioning reserve floating platform includes an upper floating body of the floating platform, a lower floating body of the floating platform and a floating body connecting column. The upper floating body of the floating platform and the lower floating body of the floating platform are fixedly connected through the floating body connecting columns on both sides to form the main body of the entire floating body platform.

[0007] Further, the lower floating body of the floating platform is a structure with a frustum-shaped hollow opening at the center of the bottom, and it is connected to the upper floating body of the floating platform through the floating body connecting column to form a propeller jet water flow channel.

[0008] A positioning propeller is installed in the frustum-shaped hollow structure opened at the center of the bottom of the lower floating body of the floating platform.

[0009] A positioning fairing is installed between the upper floating body and the lower floating body of the floating platform, on the side close to the positioning propeller.

[0010] Further, a rotating ring is installed at the lower end of the positioning fairing, at the top of the frustum-shaped hollow opened at the center of the bottom of the lower floating body of the floating platform, and the positioning fairing is connected to the lower floating body of the floating platform through the rotating ring.

[0011] A rotating sliding disk is installed at the upper end of the positioning fairing, on the side close to the upper floating body of the floating platform, and the positioning fairing is connected to the upper floating body of the floating platform through the rotating sliding disk.

[0012] Further, a driving motor for driving the positioning fairing to rotate in any direction is installed inside the rotating ring.

[0013] A bearing that can rotate around the center of the rotating sliding disk is installed at the connection between the rotating sliding disk and the upper floating body of the floating platform.

[0014] Further, an energy and control center is installed at the upper end of the DP positioning reserve floating platform, anchor chains are respectively connected to both sides of the lower end of the DP positioning reserve floating platform, and force monitors are installed on both of the anchor chains.

[0015] Further, the energy and control center includes a storage battery, a signal receiving module, a processor and a controller which are interconnected. The controller is respectively connected to the rotating ring and the positioning propeller.

[0016] The force monitor includes a three-component force sensor and a signal transmitting module which are interconnected. The signal transmitting module is wirelessly connected to the signal receiving module.

[0017] Further, the storage battery is used to supply power to the entire system. The signal receiving module is used to receive the force condition of the anchor chain transmitted by the force monitor. The three-component force sensor is used to monitor the force magnitude of the anchor chain. The signal transmitting module sends the force information of the anchor chain transmitted by the three-component force sensor to the signal receiving module of the energy and control center. The signal receiving module transmits the force information of the anchor chain to the processor to process the force information transmitted by the signal receiving module and generate a control signal to be transmitted to the controller. The controller controls the rotating ring and the positioning propeller to perform corresponding operations.

[0018] Further, anchor piles are connected to the other ends of the anchor chains respectively. The anchor piles are fixedly installed on the seabed of the sea.

[0019] Further, the shape of the positioning fairing is an arc fan-shaped structure.

[0020] Further, for the operation method of a mooring system of an ocean floating platform with vertical propeller-assisted dynamic positioning reserve, the steps of the operation process are as follows:

[0021] Step (1): The three-component force sensor monitors the force condition of the anchor chain in real time and transmits the force information of each anchor chain to the energy and control center through the signal transmitting module.

[0022] Step (2): The processor of the energy and control center judges the orientation of the anchor chain with the largest force.

[0023] Step (3): The energy and control center controls the rotating ring to rotate, driving the tail end opening of the positioning fairing to face the opposite direction of the orientation of the anchor chain with the largest force to partially offset the force on the anchor chain.

[0024] Step (4): The processor of the energy and control center judges the error between the anchor chain with the largest force and the average force of the anchor chains, and linearly adjusts the rotation speed of the positioning propeller based on the magnitude of the error value.

[0025] The beneficial effects of the present invention are as follows: The structure of the present invention is simple with the cooperation of the propeller and the fairing, which is convenient for construction and application. At the same time, combined with intelligent means, it can well adapt to complex wave loads at sea, reduce the force on the ocean anchor chain, and improve the stability of the platform. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a structural diagram of the DP positioning reserve floating platform and the energy and control center of the present invention;

[0028] Figure 3 It is a schematic diagram of the external structure and sectional structure of the main body of the DP positioning reserve floating platform of the present invention;

[0029] Figure 4 It is a schematic diagram of the composition of the control system (energy and control center, force monitor and some equipment of the DP positioning reserve floating platform) of the present invention;

[0030] Figure 5 It is a working flow chart of the present invention;

[0031] In the figure: 1 is the DP positioning reserve floating platform, 11 is the upper floating body of the floating platform, 12 is the lower floating body of the floating platform, 13 is the floating body connecting column, 14 is the positioning propeller, 15 is the positioning fairing, 16 is the rotating ring, 17 is the rotating sliding disk;

[0032] 2 is the energy and control center, 21 is the storage battery, 22 is the signal receiving module, 23 is the processor, 24 is the controller;

[0033] 3 is the force monitor, 31 is the three-component force sensor, 32 is the signal transmitting module;

[0034] 4 is the anchor chain, 5 is the anchor pile. Specific embodiments

[0035] The following further elaborates on the specific technical solutions of the present invention in combination with specific examples.

[0036] As shown in the figure, a mooring system for a vertical propeller-assisted dynamic positioning reserve ocean floating platform according to the present invention mainly consists of a DP positioning reserve floating platform 1, an energy and control center 2, a force monitor 3, an anchor chain 4 and an anchor pile 5;

[0037] Among them, the DP positioning reserve floating platform 1 is provided with a positioning propeller 14 at the bottom of the platform, and a flow channel is arranged inside the platform, and the cooperation of the positioning propeller 14 and the flow channel can provide the platform with propulsion force in any direction in the horizontal plane to serve as the DP positioning reserve of the traditional mooring system;

[0038] The energy and control center 2 is arranged on the upper part of the DP positioning reserve floating platform 1 to provide energy for the electrical equipment of the system, and at the same time receive the force information of the anchor chain 4 monitored by the force monitor 3 and process it to control the components on the DP positioning reserve floating platform 1 to participate in the mooring process;

[0039] The force monitoring device 3 is installed on the anchor chain 4 to monitor the magnitude of the force on the anchor chain 4 in real time and transmit the force information to the energy and control center 2 in real time;

[0040] The water surface end of the anchor chain 4 is connected to the DP positioning reserve floating platform 1, and its underwater end is connected to the anchor pile 5 to complete the anchoring of the platform;

[0041] The anchor pile 5 is fixedly installed on the seabed floor of the sea.

[0042] As Figure 2 、 Figure 3 shown, the DP positioning reserve floating platform 1 mainly consists of a floating platform upper floating body 11, a floating platform lower floating body 12, a floating body connecting column 13, a positioning propeller 14, a positioning fairing 15, a rotating ring 16 and a rotating sliding disc 17;

[0043] Among them, the floating platform upper floating body 11 and the floating platform lower floating body 12 are fixedly connected through the floating body connecting column 13 to form the main body of the entire floating body platform;

[0044] The floating platform upper floating body 11 is mainly used to arrange the offshore floating structure. The floating platform lower floating body 12 is a structure with a frustum-shaped hollow opening at the bottom center. It is connected to the floating platform upper floating body 11 through the floating body connecting column 13 to form a propeller jet water flow channel;

[0045] The positioning propeller 14 is installed in the frustum-shaped hollow opening at the bottom center of the floating platform lower floating body 12. The positioning fairing 15 is an arc-shaped fan structure used to divert the water flow ejected by the positioning propeller 14. Its lower end is connected to the floating platform lower floating body 12 through the rotating ring 16 and is arranged at the top of the frustum-shaped hollow of the floating platform lower floating body 12. Its upper end is connected to the floating platform upper floating body 11 through the rotating sliding disc 17;

[0046] A driving motor is installed inside the rotating ring 16, which can drive the positioning fairing 15 to rotate in any direction; at the same time, the positioning fairing 15 can rotate around the center with the rotating sliding disc 17. A bearing is also provided at the connection between the rotating sliding disc 17 and the floating platform upper floating body 11, which can rotate around the center of the rotating sliding disc 17. Through the connection of the rotating ring 16 and the rotating sliding disc 17, the positioning fairing 15 can be rotated to any direction to provide the required lateral thrust.

[0047] As Figure 4 shown, the energy and control center 2 mainly consists of a storage battery 21, a signal receiving module 22, a processor 23 and a controller 24;

[0048] Among them, the storage battery 21 is used to provide electrical energy for the entire system, and the signal receiving module 22 is used to receive the force condition of the anchor chain 4 transmitted by the force monitoring device 3;

[0049] The force monitoring device 3 is composed of a signal transmitting module 32 and a three-component force sensor 31. The three-component force sensor 31 is used to monitor the force on the anchor chain 4, and the signal transmitting module 32 sends the force information of the anchor chain 4 transmitted by the three-component force sensor 31 to the signal receiving module 22 of the energy and control center. The signal receiving module 22 further transmits the force information of the anchor chain 4 to the processor 23 to process the force information transmitted by the signal receiving module 22 and generate a control signal, which is transmitted to the controller 24. The controller 24 controls the rotating ring 16 and the positioning propeller 14 to perform corresponding operations.

[0050] As Figure 5 shown, the operation method of a mooring system for an ocean floating platform with a vertical propeller-assisted dynamic positioning reserve includes the following steps:

[0051] S1. The three-component force sensor 31 monitors the force on the anchor chain 4 in real time and transmits the force information of each anchor chain 4 to the energy and control center 2 through the signal transmitting module 32.

[0052] S2. The processor 23 of the energy and control center 2 judges the orientation of the anchor chain 4 with the maximum force.

[0053] S3. The energy and control center 2 controls the rotating ring 16 to rotate, driving the tail end opening of the positioning fairing 15 to face the opposite direction of the orientation of the anchor chain 4 with the maximum force to partially offset the force on the anchor chain 4.

[0054] S4. The processor 23 of the energy and control center 2 judges the error between the anchor chain 4 with the maximum force and the average force of the anchor chain 4, and linearly adjusts the rotation speed of the positioning propeller 14 based on the magnitude of the error value.

[0055] The basic principle of the present invention is: 1. The present invention generates lateral thrust in any direction through the cooperation of the propeller and the fairing to adapt to the impact of waves in different orientations and magnitudes on the floating platform, thereby reducing the force on the anchor chain and improving the stability of the platform; 2. The present invention monitors the force on the anchor chain through the three-component force sensor monitoring method and combines automatic control means to achieve intelligent DP positioning auxiliary mooring.

[0056] The present invention not only reflects its improvement of the platform stability by using DP positioning technology, but also further optimizes the mooring system of the ocean floating platform through the application of intelligent means, improving the adaptability and stability of the system, and providing a safer and more reliable technical support for the development of deep-sea resources.

Claims

1. An offshore floating platform mooring system with a vertical propeller-assisted dynamic positioning reserve, characterized in that Including a DP positioning reserve floating platform (1), the DP positioning reserve floating platform (1) includes an upper floating body (11) of the floating platform, a lower floating body (12) of the floating platform, and floating body connecting columns (13). The upper floating body (11) of the floating platform and the lower floating body (12) of the floating platform are fixedly connected through the floating body connecting columns (13) on both sides to form the main body of the entire floating body platform.

2. The mooring system of an ocean floating platform with a vertical propeller-assisted dynamic positioning reserve according to claim 1, characterized in that, The lower floating body (12) of the floating platform has a structure with a frustum-shaped hollow opening at the bottom center. It is connected to the upper floating body (11) of the floating platform through the floating body connecting column (13) to form a propeller jet water flow channel. A positioning propeller (14) is installed inside the frustum-shaped hollow structure opened at the bottom center of the lower floating body (12) of the floating platform. A positioning fairing (15) is installed between the upper floating body (11) and the lower floating body (12) of the floating platform, on one side close to the positioning propeller (14).

3. A mooring system for an ocean floating platform with a vertical propeller-assisted dynamic positioning reserve according to claim 2, characterized in that, A rotating ring (16) is installed at the lower end of the positioning fairing (15), close to the top of the frustum-shaped hollow opening at the bottom center of the lower floating body (12) of the floating platform. The positioning fairing (15) is connected to the lower floating body (12) of the floating platform through the rotating ring (16). A rotating sliding disk (17) is installed at the upper end of the positioning fairing (15), on one side close to the upper floating body (11) of the floating platform. The positioning fairing (15) is connected to the upper floating body (11) of the floating platform through the rotating sliding disk (17).

4. A mooring system for an ocean floating platform with a vertical propeller-assisted dynamic positioning reserve according to claim 3, characterized in that, A driving motor for driving the positioning fairing (15) to rotate in any direction is installed inside the rotating ring (16). A bearing that can rotate around the center of the rotating sliding disk (17) is installed at the connection between the rotating sliding disk (17) and the upper floating body (11) of the floating platform.

5. The mooring system of an ocean floating platform with a vertical propeller-assisted dynamic positioning reserve according to claim 3, characterized in that, An energy and control center (2) is installed at the upper end of the DP positioning reserve floating platform (1). Anchor chains (4) are respectively connected to both sides of the lower end of the DP positioning reserve floating platform (1), and force monitoring devices (3) are installed on both of the anchor chains (4).

6. The mooring system of an ocean floating platform with a vertical propeller-assisted dynamic positioning reserve according to claim 5, characterized in that, The energy and control center (2) includes a storage battery (21), a signal receiving module (22), a processor (23), and a controller (24) that are connected to each other. The controller (24) is respectively connected to the rotating ring (16) and the positioning propeller (14). The force monitoring device (3) includes a three-component force sensor (31) and a signal transmitting module (32) that are connected to each other. The signal transmitting module (32) is wirelessly connected to the signal receiving module (22).

7. A mooring system for an ocean floating platform with a vertical propeller-assisted dynamic positioning reserve according to claim 6, characterized in that, The storage battery (21) is used to supply electrical energy to the entire system. The signal receiving module (22) is used to receive the force condition of the anchor chain (4) transmitted by the force monitor (3). The three-component force sensor (31) is used to monitor the force magnitude of the anchor chain (4). The signal transmitting module (32) sends the force information of the anchor chain (4) transmitted by the three-component force sensor (31) to the signal receiving module (22) of the energy and control center (2). The signal receiving module (22) transmits the force information of the anchor chain (4) to the processor (23) to process the force information transmitted by the signal receiving module (22) and generate a control signal to be transmitted to the controller (24). The controller (24) controls the rotating ring (16) and the positioning propeller (14) to perform corresponding operations.

8. A mooring system for an ocean floating platform with a vertical propeller-assisted dynamic positioning reserve according to claim 5, characterized in that, At the other end of the anchor chain (4), an anchor pile (5) is connected, and the anchor pile (5) is fixedly installed on the seabed.

9. A mooring system for an ocean floating platform with a vertical propeller-assisted dynamic positioning reserve according to claim 2, characterized in that, The shape of the positioning fairing (15) is an arc fan-shaped structure.

10. The operation method of a mooring system for an ocean floating platform with a vertical propeller-assisted dynamic positioning reserve according to any one of claims 1-9, characterized in that, The steps of its operation process are as follows: Step (1): The three-component force sensor (31) monitors the force condition of the anchor chain (4) in real time and transmits the force information of each anchor chain (4) to the energy and control center (2) through the signal transmitting module (32). Step (2): The processor (23) of the energy and control center (2) judges the orientation of the anchor chain (4) with the largest force. Step (3): The energy and control center (2) controls the rotating ring (16) to rotate, driving the tail end opening of the positioning fairing (15) to face the opposite direction of the orientation of the anchor chain (4) with the largest force to partially offset the force on the anchor chain (4). Step (4): The processor (23) of the energy and control center (2) judges the error between the anchor chain (4) with the largest force and the average force of the anchor chain (4), and linearly adjusts the rotation speed of the positioning propeller (14) based on the magnitude of the error value.

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