CN219865340U - Gravity type foundation structure of offshore wind turbine integrated with compressed air energy storage - Google Patents
Gravity type foundation structure of offshore wind turbine integrated with compressed air energy storage Download PDFInfo
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- CN219865340U CN219865340U CN202320832518.6U CN202320832518U CN219865340U CN 219865340 U CN219865340 U CN 219865340U CN 202320832518 U CN202320832518 U CN 202320832518U CN 219865340 U CN219865340 U CN 219865340U
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Abstract
The utility model discloses a gravity type foundation structure of an offshore wind turbine integrating compressed air energy storage, and relates to the field of offshore wind power generation and energy storage. The electric energy generated by the operation of the offshore wind turbine in the power generation peak period is used for supplying power to the compressed air energy storage system, and the compressed air energy is converted into electric energy to supplement offshore wind power in the power generation valley period. The utility model can effectively regulate the power generation output of the offshore wind turbine and improve the quality of output power, and simultaneously effectively utilizes the space of the offshore wind power foundation structure, improves the cooling effect in the process of compressing air by utilizing seawater, reduces the pressure difference between the inside and the outside of the air storage chamber by utilizing the seawater pressure, improves the energy density of the compressed air and improves the economical efficiency of the whole engineering.
Description
Technical Field
The utility model relates to the field of offshore wind power generation and energy storage, in particular to a gravity type foundation structure of an offshore wind turbine integrating compressed air energy storage.
Background
New energy-based novel power systems are gradually built in China, offshore wind power generation is an important component of renewable energy power generation technology, and rapid development is carried out in China in recent years. Because of the randomness of wind energy resources, compared with the traditional energy sources, the offshore wind power generation has the problems of intermittence, fluctuation and the like, and has certain instability. The energy storage system is used for storing and releasing energy, realizing bidirectional energy transfer and conversion between the energy storage system and a power grid, realizing peak clipping and valley filling of offshore wind power generation, stabilizing the output level of offshore wind power generation, realizing power peak shaving and energy optimization, and improving the power quality and stability of offshore wind power generation. Therefore, the research on the fusion development of the offshore wind power and the energy storage has important significance for solving the problems of wind abandoning and unstable output of the offshore wind power. The compressed air energy storage has the advantages of large energy storage capacity, low cost, long service life, safety, environmental protection and the like, and is one of the large-scale energy storage technologies with the most development potential at present.
Disclosure of Invention
The utility model provides a gravity type foundation structure of an offshore wind turbine integrating compressed air energy storage, which realizes power peak regulation of offshore wind power generation and improves power quality and stability.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an offshore wind turbine gravity type foundation structure integrating compressed air energy storage mainly comprises offshore wind turbine sets, gravity type foundations, an energy storage system and the like. The offshore wind turbine generator is an important device for converting offshore wind energy into electric energy, and mainly comprises blades, a cabin, a hub, a fan tower and necessary internal components such as a yaw and pitch system, wherein the wind turbine generator converts wind energy into electric energy, one part of electric energy is boosted and then is transmitted to a power grid, and the other part of electric energy is transformed and then is used for driving an air compressor of an energy storage system. The gravity type foundation is seated on the seabed by means of self gravity and is used for supporting the structure of the offshore wind turbine, so that the stability of the gravity type foundation in a marine stormy environment is guaranteed, and the gravity type foundation is simple in structure, low in manufacturing cost and good in reliability. The energy storage system is used for realizing compressed energy storage and energy release of air.
The gravity type foundation comprises a connecting section and a foundation main body; the connecting section lower part links firmly as an organic wholely with the basis main part and the basis main part encircles the connecting section setting, and the basis main part is reinforced concrete pouring structure, including foundation bottom plate, foundation curb plate, foundation roof, foundation bottom plate, foundation curb plate, foundation roof are connected each other and are formed confined cavity, and the air receiver of energy storage system is regarded as to the cavity when the basis main part provides the basis counter weight, connecting section upper end and offshore wind turbine generator system fixed connection.
In the above technical scheme, further, the basic main body further comprises a plurality of basic rib plates, and the basic rib plates are arranged in the hollow cavity to divide the hollow cavity into a plurality of independent spaces so as to form a plurality of air storage chambers.
Further, an air pressure gauge is arranged in the air storage chamber and used for monitoring the pressure of compressed air in the corresponding air storage chamber and analyzing the stored air potential energy.
Further, the energy storage system comprises an air compressor, an expansion chamber and a gas wheel generator, wherein the air compressor, the expansion chamber and the gas wheel generator are arranged on a platform at the top of the connecting section, the air compressor is connected with the gas storage chamber through an air inlet pipe, the gas storage chamber is connected with the expansion chamber through an air outlet pipe, and the expansion chamber is connected with the gas wheel generator. Furthermore, the air inlet pipe and the air outlet pipe are high-pressure gas pipelines, and the number of the air inlet pipes and the number of the air outlet pipes are matched with the number of the air storage chambers.
Further, the top of the connecting section is connected with the bottom of the offshore wind turbine generator set through a flange and bolts.
The beneficial effects of the utility model are as follows:
1. the utility model aims at providing a gravity type foundation structure of an offshore wind turbine integrating compressed air energy storage, which aims at the offshore wind power industry, and the energy storage system is utilized to convert, store and release the power of smooth offshore wind power generation, so that the problem of insufficient wind power prediction precision is effectively avoided, and the offshore wind power generation efficiency and quality are improved.
2. The utility model fully utilizes the space of the gravity foundation of the offshore wind turbine as the air storage chamber of the energy storage system, reduces the occupied area of energy storage, simultaneously utilizes the weight of the outer wall of the air storage chamber to provide the counterweight of the foundation, and effectively improves the engineering economy. By arranging the energy storage system on each fan, each fan can flexibly utilize compressed air energy storage to adjust the output.
3. The basic structure of the utility model can fully utilize the seawater cooling effect to timely dissipate heat of compression heat generated in the process of compressing air, and improve the operation efficiency of the energy storage system. The whole compressed air energy storage system is rapid in adjustment, and can quickly respond to frequency fluctuation of the power grid, so that the power grid is restored and stabilized.
4. The basic structure of the utility model can counteract the air pressure of compressed air in the air storage chamber by utilizing the water pressure generated by seawater on the outer surface of the air storage chamber, and the submarine air storage chamber can bear larger air pressure than a land air storage chamber under the same structural strength, thereby improving the energy density and the working efficiency of compressed air energy storage.
Drawings
FIG. 1 is a schematic illustration of the gravity base structure of an offshore wind turbine of the present utility model;
FIG. 2 is a schematic view of a gravity foundation according to the present utility model;
FIG. 3 is a schematic top view of the gravity base of FIG. 2 according to the present utility model;
FIG. 4 is a schematic diagram of an energy storage system according to the present utility model;
fig. 5 is a schematic structural diagram of an air reservoir according to the present utility model.
In the figure: the marine wind turbine generator system comprises a marine wind turbine generator system 1, a gravity type foundation 2, an energy storage system 3, a connecting section 21, a foundation bottom plate 22, a foundation side plate 23, a foundation rib plate 24, a foundation top plate 25, an air compressor 31, an air inlet pipe 32, an air storage chamber 33, an air outlet pipe 34, an expansion chamber 35 and an air wheel generator 36.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
An offshore wind turbine gravity type foundation structure integrating compressed air energy storage comprises an offshore wind turbine 1, a gravity type foundation 2 and an energy storage system 3. Fig. 1-5 are specific implementation examples of the structure of the present utility model, where the offshore wind turbine 1 and the energy storage system 3 are both disposed on a gravity foundation 2, and the gravity foundation is seated on a seabed by self gravity, and is used for supporting the offshore wind turbine structure, ensuring its stability in a marine stormy environment, and the gravity foundation 2 is a reinforced concrete structure, as shown in fig. 2 and 3, and mainly includes a connection section 21, and a foundation main body composed of a foundation bottom plate 22, a foundation side plate 23, a foundation rib plate 24, and a foundation top plate 25. The connecting section 21 is connected with the offshore wind turbine 1 through a foundation flange pre-buried at the top of the connecting section 21 and a fan flange pre-welded at the bottom of the offshore wind turbine 1 through bolts. According to a specific example of the utility model, as shown in fig. 3, the lower part of the gravity foundation 2 is provided with 6 foundation bottom plates 22, 6 foundation side plates 23, 6 foundation rib plates 24 and 6 foundation top plates 25 in total, and each foundation bottom plate 22, foundation side plate 23, foundation rib plate 24 and foundation top plate 25 are poured to form a gravity type cavity, and the gravity type cavity is a hollow concrete structure and is used for gas storage. The gravity type foundation 2 is formed by pouring 6 gravity type cavities and the connecting section 21, and 6 air storage chambers 33 are formed in the example, and each air storage chamber 33 is shown in fig. 5; in other embodiments of the utility model, the reservoir may be of any other number in combination with the design of the gravity base 2.
An air pressure gauge is disposed in each air reservoir 33 for monitoring the pressure of the compressed air in the air reservoir 33 and analyzing the stored air potential energy. The thickness of the side wall of the air storage chamber 33 is calculated and determined according to the internal and external pressure difference formed by the compressed air pressure and the seawater pressure, so that the structural strength of long-term reciprocating use is satisfied.
Fig. 4 is a schematic diagram of an arrangement of the energy storage system 3. The energy storage system 3 consists of an air compressor 31, an air inlet pipe 32, an air storage chamber 33, an exhaust pipe 34, an expansion chamber 35 and an air wheel generator 36. The air compressor 31, the expansion chamber 35 and the air wheel generator 36 are uniformly distributed on the outer platform of the gravity foundation 2. When the electric power demand is low, the air compressor 31 is started to compress air into high-pressure air and transmit the air to the air storage chamber 33 through the air inlet pipe 32, and compression heat generated in the compression process is emitted through seawater regulation. When the power grid demand is high, high-pressure air compressed and stored in the air storage chamber 33 is input into the expansion chamber 35 through the exhaust pipe 34 to drive the air wheel generator 36 to do work and generate power, and the generated power can be connected into the power grid. The air inlet pipe and the air outlet pipe are high-pressure gas pipelines, and the number of the air inlet pipes and the number of the air outlet pipes are matched with the number of the air storage chambers. The monitoring and control system of the energy storage system may be integrated into the control system of the offshore wind turbine, with the communication channel of the offshore wind turbine being utilized to power control the air compressor 31 and the air turbine generator 36 of the energy storage system to control the storage and release of energy thereof.
In the gravity type foundation structure, the inner space of the gravity type foundation of the offshore wind turbine is used as an air storage chamber of the energy storage system, the weight of the outer wall of the air storage chamber is used for providing a counterweight of the foundation, and the energy storage system is arranged by using an outer platform of the gravity type foundation. The utility model not only can realize that the electric energy generated by the operation of the offshore wind turbine is used for supplying power to the energy storage system in the power generation peak period, but also can convert the compressed air energy into electric energy to supplement offshore wind power when the power generation is low, thereby effectively regulating the power generation output of the offshore wind turbine and improving the quality of output power.
The foregoing is only a preferred embodiment of the present utility model, and is not intended to limit the scope of the present utility model, but all equivalent modifications in the principles of the present utility model should be included in the scope of the present utility model.
Claims (6)
1. An offshore wind turbine gravity type foundation structure integrating compressed air energy storage, which is characterized in that: the system comprises an offshore wind turbine, a gravity type foundation and an energy storage system; the gravity foundation is arranged on the seabed surface and comprises a connecting section and a foundation main body; the connecting section lower part links firmly as an organic wholely with the basis main part and the basis main part encircles the connecting section setting, and the basis main part is reinforced concrete pouring structure, including foundation bottom plate, foundation curb plate, foundation roof, foundation bottom plate, foundation curb plate, foundation roof are connected each other and are formed confined cavity, and the basis main part uses the cavity to regard as energy storage system's air receiver when providing the basis counter weight, connecting section upper end and marine wind turbine generator system fixed connection.
2. The integrated compressed air energy storage offshore wind turbine gravity foundation structure of claim 1, wherein: the base main body also comprises a plurality of base rib plates, and the base rib plates are arranged in the hollow cavity to divide the hollow cavity into a plurality of independent spaces so as to form a plurality of air storage chambers.
3. The integrated compressed air energy storage offshore wind turbine gravity foundation structure of claim 1 or 2, wherein: and an air pressure gauge is arranged in the air storage chamber and used for monitoring the pressure of compressed air in the corresponding air storage chamber and analyzing the stored air potential energy.
4. The integrated compressed air energy storage offshore wind turbine gravity foundation structure of claim 1, wherein: the energy storage system comprises an air compressor, an expansion chamber and an air wheel generator, wherein the air compressor, the expansion chamber and the air wheel generator are all arranged on a platform at the top of the connecting section, the air compressor is connected with the air storage chamber through an air inlet pipe, the air storage chamber is connected with the expansion chamber through an air outlet pipe, and the expansion chamber is connected with the air wheel generator.
5. The integrated compressed air energy storage offshore wind turbine gravity foundation structure of claim 4, wherein: the air inlet pipe and the air outlet pipe are high-pressure gas pipelines, and the number of the air inlet pipes and the number of the air outlet pipes are matched with the number of the air storage chambers.
6. The integrated compressed air energy storage offshore wind turbine gravity foundation structure of claim 1, wherein: the top of the connecting section is connected with the bottom of the offshore wind turbine generator set through a flange and bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320832518.6U CN219865340U (en) | 2023-04-14 | 2023-04-14 | Gravity type foundation structure of offshore wind turbine integrated with compressed air energy storage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320832518.6U CN219865340U (en) | 2023-04-14 | 2023-04-14 | Gravity type foundation structure of offshore wind turbine integrated with compressed air energy storage |
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| CN219865340U true CN219865340U (en) | 2023-10-20 |
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| CN202320832518.6U Active CN219865340U (en) | 2023-04-14 | 2023-04-14 | Gravity type foundation structure of offshore wind turbine integrated with compressed air energy storage |
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| CN (1) | CN219865340U (en) |
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2023
- 2023-04-14 CN CN202320832518.6U patent/CN219865340U/en active Active
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