Isothermal compression energy storage type balanced water system for deep sea floating platform

Abstract

The invention relates to an isothermal compression energy storage type balanced water system for a deep and far sea floating platform, which consists of a deep and far sea floating platform, an energy storage system, a balanced water system and an intelligent operation and maintenance system, the energy storage system carries out isothermal compression and energy storage on air discharged to the atmospheric environment in the balancing process, and gravitational potential energy and pressure potential energy are accumulated for adjusting the water level of the next water balancing system; when no initial potential energy is stored, the water balancing system serves as a conventional power source for water allocation and stirring and also serves as a power source for isothermal hydraulic air energy storage. The intelligent operation and maintenance system carries out unified intelligent scheduling on all electromechanical equipment in a deep and far sea floating platform, an energy storage system and a balanced water system, ensures ordered operation and maintenance of the balanced water system, feeds back the operation and maintenance state of the equipment in real time, carries out service life prediction on pump valve equipment, and formulates a maintenance plan for feedback information of a far-end control room. And normal operation and maintenance of the deep sea floating type floating platform are guaranteed.

Description

Technical Field

[0001] The invention relates to a deep-sea floating platform, in particular to an isothermal compression energy storage type equalizing water system for the deep-sea floating platform. Background Art

[0002] With global warming, extreme weather, rising sea levels and other environmental changes in the 21st century, mankind is moving towards the stars and the sea, green energy conservation, unmanned intelligence and other trends. It is expected that a large number of standardized and large-scale floating platform equipment will carry deep-sea equipment, buildings, islands and even cities in the future. A new chapter will be opened. As the basic ballast water system in the floating platform, it also needs to constantly change and improve technology to keep pace with the times and develop in a more green, energy-saving, economical and open sea direction.

[0003] Currently, the large-scale floating platform equipment that can be retrieved is mainly concentrated in floating deep-sea wind turbines, while the conventional ballast water system is mainly for ships, and its ballast system is mainly composed of gravity ballast, water pump ballast, air ballast and a combination of multiple ballasts.

[0004] Dalian Shipbuilding Industry Corporation's invention patent, with the patent publication number CN111942533A, sets up ballast water tanks inside each column, establishes channels to each cabin, and delivers ballast water to each ballast tank through ballast pipelines and pumping equipment; uses ballast pumps to pump out the ballast water. However, this external ballast system has a large pump volume, long pipelines, and long delivery distances. When adjusting the ballast, the response speed is slow, the adjustment time is long, and the energy consumption is high, which places high requirements on pipeline quality and anti-corrosion ability.

[0005] The invention patent of China Power Construction Group East China Survey and Design Institute Co., Ltd. with the patent publication number CN111469992A: By setting multiple independent self-filling watertight compartments in the central column of the floating foundation, filling the compartments with ballast water separately, and controlling the draft and center of gravity of the structure, the roll and pitch response of the floating foundation can be effectively reduced, thereby improving the movement state of the structure. However, when adjusting the ballast, there are also problems such as slow response speed, long adjustment time, high energy consumption, and high requirements for structural corrosion protection.

[0006] Sichuan Honghua Petroleum Equipment Co., Ltd. has an invention patent with the patent publication number CN 114313125 A. By designing a double-layer shell structure on the buoy cylinder, the cylinder is divided into a buoyancy chamber with a closed structure and a ballast tank with a channel connecting to the outside world. The bottom cover of the ballast tank is provided with an openable and closable water inlet, and the top is provided with an inlet and exhaust port. The air compressor is used to adjust the air pressure to achieve on-demand conversion between water and seawater in the ballast tank, and gravity water intake is used to reduce part of the power consumption of the ballast device. However, the ballast system uses conventional blowers or air compressor units, which are large in size and weight, inconvenient to carry and replace, and difficult to repair if damaged. There is no backup or emergency plan and emergency ballast is impossible under power outage conditions. In addition, conventional air ballast devices use real-time ballasting, which can be started and stopped immediately. The required motor power is large, and the equipment also consumes a lot of power during startup.

[0007] In view of the problems existing in the above-mentioned active ballast water system, the present invention designs a floating platform equipped with a new isothermal compression energy storage type equalization water system for deep-sea floating platforms. With the characteristics of high speed, high lift, intelligence, low power consumption, isothermal compression energy storage, energy saving, economy, emergency use, and rapid response, it solves the problems of redundant ballast water system equipment, unintelligent operation and maintenance, lack of emergency use, and high energy consumption of air isentropic compression ballast. Summary of the invention

[0008] The present invention is to provide an isothermal compression energy storage equalization water system for a deep-sea floating platform, the purpose of which is to use a new closed equalization system to perform closed load adjustment and energy storage on the ballast water in the floating platform's load adjustment tank, so that the deep-sea floating platform as a whole has active ballast and anti-tilt capability.

[0009] To achieve the above purpose, the technical solution of the present invention is: an isothermal compression energy storage type equalization water system for a deep-sea floating platform, which is composed of a deep-sea floating platform, an energy storage system, a equalization water system, and an intelligent operation and maintenance system. The deep-sea floating platform provides a floating foundation for a power generation wind turbine or a farm, and carries power system transmission equipment, basic functional facilities, communication base stations, helipads, and emergency functional equipment; the energy storage system isothermally compresses and stores energy in the air released into the atmosphere during the equalization process, accumulates gravitational potential energy and pressure potential energy for the next water level adjustment of the equalization water system, and improves the compression efficiency. The air process efficiency is improved, while reducing the frequent action of the pump in the balanced water system; when there is no initial potential energy storage, the balanced water system serves as a conventional power source for water allocation, and also as a power source for isothermal hydraulic air energy storage; the intelligent operation and maintenance system conducts unified intelligent scheduling of all electromechanical equipment in the deep-sea floating platform, energy storage system, and balanced water system to ensure the orderly operation and maintenance of the balanced water system, provide real-time feedback on the equipment operation and maintenance status, predict the life of pump and valve equipment, and formulate maintenance plans for the remote control room to provide feedback information, thus safeguarding the normal operation and maintenance of the deep-sea floating platform.

[0010] Furthermore, the deep-sea floating platform consists of multiple pontoons, a central tower, and steel structures connecting the pontoons and the central tower; three pontoons are arranged in the triangular direction of the central tower, and the pontoons are connected as a whole through a steel structure corridor bridge and the bottom ballast tank water steel structure; the central tower and the inside of the pontoon are arranged from top to bottom with equipment rooms, air storage tanks, ballast water tanks, and redundant tanks; a balancing pump system is arranged at the bottom of the center where the three pontoons intersect, and an intelligent operation and maintenance system is placed in the upper cabin.

[0011] Furthermore, air compressor equipment is arranged in the equipment cabin, and ventilation devices are provided at the upper end; the air storage tank is connected to the ballast water tank to store more air energy; the ballast water tank is used to store ballast water, and ventilation valves, filters and liquid level gauges are provided above and below; the redundant cabin 4 is used to install water pipes, internal and external water valves, and ballast iron.

[0012] Furthermore, the deep-sea floating platform is equipped with a rainwater collection device and a liquid level monitoring device. After the results are calculated by the central control console or remote cloud monitoring, the water replenishment system is opened regularly to replenish the evaporated liquid level in the water tank.

[0013] Furthermore, the energy storage system consists of an air storage tank, a water transfer tank, an air compressor, a piping system and its accessories. The air compressor is used to replenish leaked gas into the air storage tank, so that when the water transfer system evaporates too much water, it can be replenished through pneumatic ballast without the need for frequent starting.

[0014] Furthermore, the equalizing water system is composed of a water pump, pipes and their accessories. The water pump adopts a high-speed, high-lift, high-efficiency water pump. The equalizing water system realizes the water level control of each ballast water tank through the switching of different valves and the operation of the equalizing water pump.

[0015] Furthermore, the intelligent operation and maintenance system consists of PLC control terminals, switches, local PC control terminals and cloud control and monitoring equipment, which are used for real-time monitoring, remote control, intelligent analysis and processing, and data storage. The intelligent operation and maintenance system monitors the platform's operating status in real time through gyroscopes, pressure sensors, and water level sensors according to the platform's operating environment, regulates the start and stop, speed, and operating time of water pumps, valves, and air compressors, saves energy, and automatically regulates the balanced water system, intelligently maintains the platform's posture tilt angle, and digitally transmits the load adjustment process and parameters to the cloud, providing data support for remote monitoring.

[0016] Beneficial effects of the present invention:

[0017] The energy storage system in the present invention can isothermally compress and store the air released into the atmosphere during the balanced water adjustment process, accumulate gravitational potential energy and pressure potential energy for the next water level adjustment of the balanced water system, reduce the heat loss of traditional air compressors, improve the process efficiency of compressed air, and at the same time reduce the frequent operation of the pump in the balanced water system, thereby extending the service life of the pump.

[0018] The present invention makes up for the shortcomings of air ballast and water pump ballast, organically integrates their respective advantages, and has the characteristics of energy saving, fast response speed, easy maintenance, compact equipment, light weight, etc., and broadens the application of high reliability, high speed, unmanned intelligent scenes of electromechanical equipment such as air compressors and pumps.

[0019] The air compressor in the energy storage system of the present invention is only used to replenish the leaked gas in the gas storage compartment and does not need to be started frequently. The exhaust volume, power, volume, mass, etc. are much smaller than those of the traditional blower ballast system.

[0020] The new closed equalizing water system in the present invention adopts an integrated high-speed, high-lift intelligent water pump, which is smaller in size and lighter in weight under the same ballast water volume conditions, and can reduce the equipment footprint of the equipment cabin; the water pumps have multiple main and one backup, and regular intelligent switching can extend the service life of the equipment and increase system reliability.

[0021] The intelligent operation and maintenance system in the present invention performs unified intelligent scheduling of all electromechanical equipment, ensures the orderly operation and maintenance of the balanced water system, provides real-time feedback on the equipment operation and maintenance status, predicts the life of equipment such as pumps and valves, and formulates maintenance plans based on feedback information to the remote control room, thereby ensuring the normal operation and maintenance of the floating platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of a deep sea floating platform;

[0023] Figure 2 It is a schematic diagram of a single buoy;

[0024] Figure 3 This is the schematic diagram of the isothermal compression energy storage type water balance system;

[0025] Figure 4 This is a schematic diagram of an integrated high-speed, high-lift intelligent water pump;

[0026] Figure 5 This is a schematic diagram of the intelligent operation and maintenance system. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] The present invention relates to a deep-sea floating platform, a deep-sea floating platform such as Figure 1 As shown, three pontoons are arranged in triangular directions of the floating platform, and the pontoons are connected as a whole through a steel structure corridor bridge and the bottom ballast tank water steel structure. The designed waterline is located in the middle of the air storage tank height. Figure 1 A is the fixed ballast iron of 2540t, B is the seawater ballast of 11300t, and C is the adjustable ballast water tank.

[0029] like Figure 2As shown, a single buoy consists of an equipment cabin 1, an air storage cabin 2, a ballast water tank 3 and a redundant cabin 4. The equipment cabin 1 is equipped with air compressors and other equipment, and is equipped with ventilation and ventilation devices at the upper end; the air storage cabin 2 is connected to the ballast water tank 3 to store more air energy; the ballast water tank 3 is used to store ballast water, and the ballast water tank 3 is equipped with ventilation valves, filters, liquid level gauges and other equipment on the upper and lower cabins; the redundant cabin 4 is used to install water pipes, internal and external water valves, ballast iron and other equipment; the balancing pump system is arranged at the bottom of the central intersection of the three buoys, and the intelligent operation and maintenance system is arranged in the upper cabin.

[0030] The present invention relates to a novel isothermal compression energy storage type water balancing system, such as Figure 3 As shown, the isothermal compression energy storage type equalizing water system consists of an air storage tank 2, a ballast water tank 3, a sea-connected tank penetration 5, a seawater filter 6, a sea valve 7 and a sea valve 14, a switching valve 8-13, a three-way pipe 15, a ballast water tank inlet and outlet 16, an air compressor check valve 17, an air compressor 18, an air suction filter 19, a balancing pump 20, a pump check valve 21, and a pump inlet filter 22. The equalizing pump 20 transfers water from the ballast water tank A to the ballast water tank B. The air compressor 18 serves as an air replenishing device to provide part of the lost pressure for the ballast water tank A to prevent cavitation of the high-speed pump. The equalizing pump 20 isothermally pressurizes the air while adjusting the water, stores part of the residual energy of the air, and saves power consumption for the next transfer of the ballast water tank B to the ballast water tank A. The two equalizing pumps 20 can be switched intelligently at regular intervals to improve the reliability of the overall operation and maintenance of the system. The intelligent operation and maintenance system controls the intelligent transfer of water between the ballast water tanks A and B by switching the opening and closing status of the valves 8-13.

[0031] The present invention relates to a high-speed, high-lift, high-efficiency water pump, such as Figure 4 The high-speed pump consists of a permanent magnet variable frequency motor and a water pump. The impeller and the directly connected motor rotor run at high speed to increase the water pump flow and head, improve the water pump efficiency, reduce the number of pump units, motor and pump head size, expand the maintenance space around the pump unit, reduce the length of the pipeline, and provide redundancy for the layout of the pump room equipment.

[0032] The present invention relates to a control system for an intelligent operation and maintenance water balancing system, as shown in FIG. Figure 5 As shown in the figure, the intelligent operation and maintenance system consists of four parts: PLC control terminal, switch, local PC control terminal / cloud control, and monitoring equipment (pressure sensor, electric valve, frequency conversion controller, liquid level gauge, gyroscope, etc.). It has the functions of real-time monitoring, remote control (valves, pumps and air compressors), analysis and processing, data storage, etc. It can provide real-time feedback on the equipment operation and maintenance status, predict the life of electromechanical equipment such as pumps, valves and air compressors, and formulate maintenance plans for the remote control room to provide feedback information, thus ensuring the normal operation and maintenance of deep-sea floating platforms.

Claims

1. An isothermal compression energy storage type equalization water system for deep sea floating platform, characterized in that: It consists of a deep-sea floating platform, energy storage system, water balance system, and intelligent operation and maintenance system. The deep-sea floating platform provides a floating foundation for wind turbines or farms, and carries power system transmission equipment, basic functional facilities, communication base stations, helipads, and emergency functional equipment. The energy storage system isothermally compresses and stores the air released into the atmosphere during the equalization process, accumulating gravitational potential energy and pressure potential energy for the next water level adjustment of the equalization water system, improving the process efficiency of compressed air and reducing the frequent operation of the pump in the equalization water system; When there is no initial potential energy storage, the equalizing water system serves as a conventional power source for water allocation, and also as a power source for isothermal hydraulic air energy storage; the intelligent operation and maintenance system uniformly and intelligently dispatches all electromechanical equipment in the deep-sea floating platform, energy storage system, and equalizing water system to ensure the orderly operation and maintenance of the equalizing water system, provide real-time feedback on the equipment operation and maintenance status, predict the life of pump and valve equipment, and formulate maintenance plans for the remote control room to provide feedback information, thereby safeguarding the normal operation and maintenance of the deep-sea floating platform.

2. The isothermal compression energy storage type equalization water system for deep sea floating platform according to claim 1 is characterized in that: The deep-sea floating platform consists of multiple pontoons, a central tower, and steel structures connecting the pontoons and the central tower. Three pontoons are arranged in the triangular direction of the central tower, and the pontoons are connected as a whole through a steel structure corridor bridge and the bottom ballast tank water steel structure. The central tower and the inside of the pontoon are arranged from top to bottom with equipment rooms, air storage tanks, ballast water tanks, and redundant tanks; a balancing pump system is arranged at the bottom of the center where the three pontoons intersect, and an intelligent operation and maintenance system is placed in the upper cabin.

3. The isothermal compression energy storage type equalization water system for deep sea floating platform according to claim 2 is characterized in that: Air compressor equipment is arranged in the equipment cabin, and ventilation devices are provided at the top; the air storage tank is connected to the ballast water tank to store more air energy; the ballast water tank is used to store ballast water, and is provided with ventilation valves, filters, and liquid level gauges at the top and bottom; the redundant cabin 4 is used to install water pipes, internal and external water valves, and ballast iron.

4. The isothermal compression energy storage type equalization water system for deep sea floating platform according to claim 1 is characterized in that: The deep-sea floating platform is equipped with rainwater collection devices and liquid level monitoring devices. After the results are calculated by the central control console or remote cloud monitoring, the water replenishment system is opened regularly to replenish the evaporated liquid level in the water tank.

5. The isothermal compression energy storage type equalization water system for deep sea floating platform according to claim 1, characterized in that: The energy storage system consists of an air storage tank, a water transfer tank, an air compressor, a piping system and its accessories. The air compressor is used to replenish leaked gas into the air storage tank, so that when the water transfer system evaporates too much water, it can be replenished through pneumatic ballast without the need for frequent starting.

6. The isothermal compression energy storage type equalization water system for deep sea floating platform according to claim 1, characterized in that: The equalizing water system is composed of a water pump, pipes and their accessories. The water pump adopts a high-speed, high-lift, and high-efficiency water pump. The equalizing water system controls the water level of each ballast water tank through the switching of different valves and the operation of the equalizing water pump.

7. The isothermal compression energy storage type equalization water system for deep sea floating platform according to claim 1, characterized in that: The intelligent operation and maintenance system consists of PLC control terminals, switches, local PC control terminals and cloud control and monitoring equipment, which are used for real-time monitoring, remote control, intelligent analysis and processing, and data storage. The intelligent operation and maintenance system monitors the platform's operating status in real time through gyroscopes, pressure sensors, and water level sensors according to the platform's operating environment, regulates the start and stop, speed, and operating time of water pumps, valves, and air compressors, and performs energy-saving and automated regulation of the balanced water system. It intelligently maintains the platform's posture tilt angle, and digitally transmits the load adjustment process and parameters to the cloud to provide data support for remote monitoring.

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