CN-122014484-A - Marine production platform based on gravity energy storage

Abstract

The invention relates to a gravity energy storage-based offshore production platform which comprises a platform main body, an operation module, an external power module, a storage module and a hydraulic module. Compared with the prior art, the storage module is embedded into the main body structure of the platform, the internal space and the three-dimensional space layout of the offshore platform structure are directly utilized, the height difference between the first main body part and the second main body part formed by the upright posts provides a foundation for storing gravitational potential energy, the operation module is connected with the external power module, so that the platform can directly utilize green electricity such as offshore wind power, photovoltaic or wave energy, and the like, and when the green electricity is unstable or excessive, the hydraulic module converts the potential energy and kinetic energy of liquid under the height difference to convert the external green electricity into gravitational potential energy which is easy to store, and then converts the gravitational potential energy into stable electric energy to supply the operation module according to requirements of operation stability.

Inventors

• Wang Yihou
• Lv Yiyang
• SUN JIAYANG
• CHENG ZIYUAN
• WANG PU

Assignees

• 中国海洋工程装备技术发展有限公司

Dates

Publication Date

20260512

Application Date

20260409

Claims (10)

1. 1. An offshore production platform based on gravity energy storage, comprising: The platform main body (1) comprises a first main body part (11) and a second main body part (12), wherein the first main body part (11) and the second main body part (12) are connected through a stand column (13) so that the first main body part (11) and the second main body part (12) form a height difference; A work module (2) provided to the platform main body (1); An external power module connected with the operation module (2) for providing intermittent green power; a storage module embedded in the first body portion (11), the second body portion (12) and the column (13) to form a receiving space having a height difference for a liquid to flow; the hydraulic module is arranged in the upright post (13) and is respectively connected with the external power module and the operation module (2) and used for converting electric energy and gravitational potential energy when flowing in the liquid height direction.
2. 2. Offshore production platform according to claim 1, wherein the storage module comprises a first water storage tank (41), a second water storage tank (42) and a flow conduit (43), the flow conduit (43) vertically communicates the first water storage tank (41) above and the second water storage tank (42) below, the first water storage tank (41), the second water storage tank (42) and the flow conduit (43) being located in the first body part (11), the second body part (12) and the upright (13), respectively.
3. 3. Offshore production platform according to claim 2, wherein the height difference between the upper and lower ends of the first water storage tank (41) and the second water storage tank (42) is 30m or more and 200m or less, respectively, communicated with the flow-through pipeline (43).
4. 4. Offshore production platform according to claim 2, characterized in that the hydraulic module comprises energy storage means and energy release means, which are arranged in the flow conduit (43) in the adjacent column (13), respectively, for delivering the liquid to the first water reservoir (41) using the intermittent green power, and for generating electricity when the liquid flows into the second water reservoir (42).
5. 5. Offshore production platform according to claim 4, characterized in that the energy release means comprise a water turbine (52), a transmission assembly (53) and a generator (54), the water turbine (52) being arranged in the middle of the upright (13), the generator (54) being arranged on top of the upright (13), the transmission assembly (53) connecting the generator (54) and the water turbine (52).
6. 6. Offshore production platform according to claim 4, characterized in that the energy storage means comprise a water pump (51), the water pump (51) being arranged in the middle of the upright (13), the external power supply module being connected to the water pump (51).
7. 7. Offshore production platform according to claim 1, characterized in that the external power module comprises a power generation device (31) and a power distribution device (32), the power generation device (31) being arranged separately from the platform body (1) and being connected to the power distribution device (32) by a cable via a booster station (33), the power distribution device (32) being arranged in the first body part (11) and being located on top of the upright (13).
8. 8. Offshore production platform according to claim 5, characterized in that the working module (2) and the generator (54) are arranged on the upper surface of the first body part (11), the working module (2) being connected to the generator (54).
9. 9. Offshore production platform according to claim 2, wherein the second water reservoir (42) is connected to the body of sea water by means of water intake and drainage means, the inner walls of the first water reservoir (41) and the second water reservoir (42) are provided with anti-sloshing plates, and the liquid is ballast water of the platform body (1).
10. 10. Offshore production platform according to claim 2, wherein the flow conduit (43) is a spiral conduit, the radius of spiral curvature of the flow conduit (43) being 6 or more and 40 meters or less.

Description

Marine production platform based on gravity energy storage Technical Field The invention relates to the technical field of offshore energy storage, in particular to an offshore production platform based on gravity energy storage. Background The offshore production platform is a core facility for ocean production or resource development, integrates various functions of exploitation, treatment, storage, export and the like, and is a true offshore factory. The current offshore production platform needs to input electric power from outside, mainly clean energy sources such as wind power, photoelectricity and wave energy, and the like, so as to carry out production operation. But the supply process of the offshore green power exhibits a significant periodic wave characteristic, i.e. there are significant power peaks and valleys. In the process of grid connection or digestion, the intermittent and fluctuating performance can cause extremely unstable grid connection power, not only affects the quality of electric energy, but also causes difficulty in power grid adjustment, and the difficulty is more remarkable along with the large-scale development of offshore green power. Therefore, there is a need to develop a novel offshore production platform to improve the problems existing in the related art. Disclosure of Invention The invention aims to provide an offshore production platform based on gravity energy storage, which can solve the problem of fluctuation of green electricity and realize stable operation. The aim of the invention can be achieved by the following technical scheme: The invention provides a gravity energy storage-based offshore production platform, which comprises: The platform main body comprises a first main body part and a second main body part, wherein the first main body part and the second main body part are connected through a stand column, so that the first main body part and the second main body part form a height difference; the operation module is arranged on the platform main body; the external power module is connected with the operation module and used for providing intermittent green power; A storage module embedded in the first body part, the second body part and the upright post to form a containing space with a height difference for liquid to flow. The hydraulic module is arranged in the upright post, is respectively connected with the external power module and the operation module, and is used for converting electric energy and gravitational potential energy when flowing in the liquid height direction. Further, the storage module comprises a first water storage cabin, a second water storage cabin and a flow pipeline, wherein the flow pipeline is vertically communicated with the first water storage cabin above and the second water storage cabin below, and the first water storage cabin, the second water storage cabin and the flow pipeline are respectively positioned in the first main body part, the second main body part and the upright post. Further, the flow-through pipeline is respectively communicated with the upper end and the lower end of the first water storage cabin and the second water storage cabin, and the height difference between the upper end and the lower end of the first water storage cabin is more than or equal to 30 meters and less than or equal to 200 meters. Further, the hydraulic module comprises an energy storage device and an energy release device, the energy storage device and the energy release device are respectively arranged in the flow pipeline in the adjacent upright posts, the energy storage device is used for conveying the liquid to the first water storage cabin by using the intermittent green electric power, and the energy release device is used for generating electricity when the liquid flows into the second water storage cabin. Further, the energy release device comprises a water turbine, a transmission assembly and a generator, wherein the water turbine is arranged in the middle of the upright post, the generator is arranged at the top of the upright post, and the transmission assembly is connected with the generator and the water turbine. Further, the energy storage device comprises a water pump, the water pump is arranged in the middle of the upright post, and the external power supply module is connected with the water pump. Further, the external power supply module comprises a power generation device and a power distribution device, wherein the power generation device is separated from the platform main body and is connected with the power distribution device through a cable by virtue of a booster station, and the power distribution device is arranged on the first main body part and is positioned at the top of the upright post. Further, the operation module and the generator are disposed on the upper surface of the first body portion, and the operation module is connected to the generator. Further, the second water storage cabin is communicated