CN111535977A - Novel wave energy power generation structure and power generation method - Google Patents
Novel wave energy power generation structure and power generation method Download PDFInfo
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- CN111535977A CN111535977A CN202010302452.0A CN202010302452A CN111535977A CN 111535977 A CN111535977 A CN 111535977A CN 202010302452 A CN202010302452 A CN 202010302452A CN 111535977 A CN111535977 A CN 111535977A
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- power generation
- wave energy
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- ship
- generation structure
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- 238000010248 power generation Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000002910 structure generation Methods 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 239000000725 suspension Substances 0.000 claims abstract description 3
- 230000007797 corrosion Effects 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 239000013535 sea water Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/141—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector
- F03B13/142—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector which creates an oscillating water column
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/50—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers
- B63B21/507—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers with mooring turrets
- B63B21/508—Anchoring arrangements or methods for special vessels, e.g. for floating drilling platforms or dredgers with mooring turrets connected to submerged buoy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Abstract
The invention discloses a novel wave energy power generation structure and a power generation method, the structure comprises two ship bodies, the tail parts of the two ship bodies are hinged together through a hinge, an opening and closing control system for controlling the opening and closing angle of the hinge is installed on one ship body, the head parts of the two ship bodies are respectively provided with a guide hole, one end of the mooring system is moored on a marine fixture in a single point mode, two suspension chains at the other end of the mooring system are respectively fixed in the two guide holes, the ship bodies of the two ship bodies are respectively provided with oscillating water column type wave energy conversion devices with the same number, the top of a gas chamber of each oscillating water column type wave energy conversion device is provided with a top cover, a gas channel communicated with the gas chamber is arranged in the top cover, and. According to the power generation structure and the power generation method disclosed by the invention, the bow is moored to the surface of a catenary buoy or a seabed through a single point of the catenary anchor leg mooring device, so that the opening angles of two hulls in the whole structure always face incident waves, and the structure is ensured to always keep high-efficiency operation in a variable marine environment.
Description
Technical Field
The invention belongs to the field of ocean engineering, and particularly relates to a novel wave energy power generation structure and a novel wave energy power generation method in the field.
Background
At present, in order to solve the problems of energy shortage and environmental pollution, the development of a mature and efficient renewable energy utilization mode is the current trend, and wave energy is widely concerned due to abundant reserves and the like. However, to become a fully mature and commercially viable source of energy, a major problem is the need to develop reliable and efficient Wave Energy Converters (WECs). The main advantage of oscillating water column wave energy conversion devices over most other WECs is its simplicity: the only moving part of the energy conversion mechanism is the rotor of the turbine, the rotor of the turbine is positioned above the water level, rotates at a relatively high speed and directly drives the generator to generate electricity, and the power generation device with the simple structure has good reliability in long-term power generation under the complex marine environment. The front wall of the air chamber is the weak point of the structural system of the oscillating water column type wave energy device, and is easily damaged due to long-time vertical slamming of waves, and the waves slam and damage the front wall of the air chamber in the history of application of the oscillating water column type wave energy device.
Disclosure of Invention
The invention aims to provide a novel wave energy power generation structure and a novel wave energy power generation method which are based on an oscillating water column type WEC, have high wave energy utilization rate and can avoid the front wall of an air chamber from being slammed and damaged by waves.
The invention adopts the following technical scheme:
the utility model provides a novel wave energy power generation structure, its improvement part lies in: the device comprises two ship bodies, the tail parts of the two ship bodies are hinged together through a hinge, an opening and closing control system for controlling the opening and closing angle of the hinge is installed on one ship body, guide holes are respectively formed in the head parts of the two ship bodies, one end of the mooring system is moored on a fixed object at sea in a single point mode, two suspension chains at the other end of the mooring system are respectively fixed in the two guide holes, the ship bodies of the two ship bodies are respectively provided with oscillating water column type wave energy conversion devices with the same number, the openings of air chambers of the oscillating water column type wave energy conversion devices are located below the water surface of the inner side of the ship body, a top cover is installed at the top of the air chamber of each oscillating water column type wave energy conversion device, an air channel communicated with the air chambers is arranged in the top cover, and a turbine generator.
Further, the number of hinges is three.
Further, the hinge opening and closing angle ranges from 0 to 90 degrees.
Further, the mooring system is a catenary anchor leg mooring device.
Further, offshore fixtures include, but are not limited to, catenary buoys or seabed surfaces.
Further, the length of each of the two ship bodies is 90 m; three oscillating water column type wave energy conversion devices are respectively arranged on the ship bodies of the two ship bodies.
Further, the vertical section of the opening of the air chamber is rectangular; the gas channel is located in the center of the top cover.
Furthermore, the ship body, the hinge and the mooring system are made of seawater corrosion resistant materials or are treated by a seawater corrosion resistant process.
The power generation method using the power generation structure is improved in that: after the power generation structure is installed in place and started, the power generation structure can rotate around an offshore fixed object along with the change of the wave direction through a mooring system, so that the opening angles of the two ship bodies always face incident waves; the hinge changes the opening and closing angle within the range of 0-90 degrees according to the size of the waves; the fluctuation of waves entering the air chamber from the air chamber opening of each oscillating water column type wave energy conversion device causes the air pressure difference inside and outside the air chamber, thereby pushing the air turbine in the air channel at the top of the air chamber to rotate and driving the generator set to generate electricity.
Further, when extreme sea conditions occur, the opening and closing control system controls the opening and closing angle of the hinge to be reduced to 0 degrees, and the two ship bodies are closed to form a monohull ship.
The invention has the beneficial effects that:
according to the power generation structure and the power generation method disclosed by the invention, the bow is moored to the surface of a catenary buoy or a seabed through a single point of the catenary anchor leg mooring device, so that the opening angles of two hulls in the whole structure always face incident waves, and the structure is ensured to always keep high-efficiency operation in a variable marine environment. The boundary formed by the two ship bodies plays a role in contracting the wave channel to a certain extent, so that waves can be effectively converged, the wave height can be increased, and the power density of the wave energy can be locally improved. Through calculation, when the included angle between the tails of the two ship bodies is 30 degrees, the wave height of the opening of the air chamber close to the stern part can reach 2 times of that of incident waves at most, and the energy capturing power can be obviously improved under the background of low wave energy density in China. The front wall of the air chamber where the opening of the air chamber of the oscillating water column type wave energy conversion device is located is almost parallel to the wave propagation direction, so that the front wall of the air chamber is prevented from being slammed and damaged under the long-term action of waves, and the reliability of power generation is improved.
The power generation structure disclosed by the invention can change the hinge opening and closing angle (namely the included angle of the tails of the two ship bodies) between 0 DEG and 90 DEG through the opening and closing control system according to the actual sea condition, and when the extreme sea condition occurs, the hinge opening and closing angle is reduced to 0 DEG, namely the two ship bodies are closed to form a monohull, so that the air chamber opening of each oscillating water column type wave energy conversion device is not directly exposed to waves, the air chamber of the oscillating water column type wave energy conversion device is protected from being damaged by the extreme sea condition, the stability of the power generation structure is improved by the form of the monohull, and the viability under the extreme sea condition is greatly improved.
Drawings
Fig. 1 is a schematic view of the overall structure of a power generation structure disclosed in embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of a single-sided hull in the power generation structure disclosed in embodiment 1 of the present invention;
FIG. 3 is a sectional view of the center of the air chamber of the hull on one side in the power generation structure disclosed in embodiment 1 of the present invention;
fig. 4 is a schematic top view of a power generation structure disclosed in embodiment 1 of the present invention;
fig. 5 is a schematic diagram of a motion trajectory of the power generation structure based on a mooring system under the action of waves in embodiment 1 of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the present embodiment, the number of hinges is three. The hinge opening and closing angle ranges from 0 to 90 degrees. The mooring system is a catenary anchor leg mooring device. Offshore fixtures include, but are not limited to, catenary buoys or seabed surfaces. The two ship bodies are both 90m in length and are suitable for being deployed on south-sea island reefs or deep and distant sea (the water depth is 50m-100 m) in China; three oscillating water column type wave energy conversion devices are respectively arranged on the ship bodies of the two ship bodies. The vertical section of the opening of the air chamber is rectangular; the gas channel is located in the center of the top cover. The ship body, the hinge and the mooring system are all made of seawater corrosion resistant materials or are treated by a seawater corrosion resistant process.
The principle of the power generation structure is that air pressure difference between the inside and the outside of an air chamber in a catamaran is caused by up-and-down fluctuation of sea waves, so that an air turbine at the top of the air chamber is pushed to rotate, and the air turbine can rotate in the same direction under the action of bidirectional airflow, so that wave energy is converted into mechanical energy to generate power. The oscillating water column type wave energy conversion device belongs to the prior art, and the specific structure and the working mode thereof are not described in detail for saving space.
The embodiment also discloses a power generation method, wherein after the power generation structure is installed in place and used, as shown in fig. 5, the power generation structure can be rotated around a marine fixed object through a mooring system according to real-time sea conditions, namely, the direction of the ship body is changed along with the direction of waves, so that the opening angles of the two ship bodies always face to incident waves, and the incident wave energy is transmitted between the included angles formed by the two ship bodies; the hinge changes the opening and closing angle within the range of 0-90 degrees according to the size of the waves; the fluctuation of waves entering the air chamber from the air chamber opening of each oscillating water column type wave energy conversion device causes the air pressure difference inside and outside the air chamber, thereby pushing the air turbine in the air channel at the top of the air chamber to rotate and driving the generator set to generate electricity.
When extreme sea conditions occur, the opening and closing control system controls the opening and closing angle of the hinge to be reduced to 0 degree, and at the moment, the two ship bodies are closed to form a monohull ship.
Claims (10)
1. The utility model provides a novel wave energy power generation structure which characterized in that: the device comprises two ship bodies, the tail parts of the two ship bodies are hinged together through a hinge, an opening and closing control system for controlling the opening and closing angle of the hinge is installed on one ship body, guide holes are respectively formed in the head parts of the two ship bodies, one end of the mooring system is moored on a fixed object at sea in a single point mode, two suspension chains at the other end of the mooring system are respectively fixed in the two guide holes, the ship bodies of the two ship bodies are respectively provided with oscillating water column type wave energy conversion devices with the same number, the openings of air chambers of the oscillating water column type wave energy conversion devices are located below the water surface of the inner side of the ship body, a top cover is installed at the top of the air chamber of each oscillating water column type wave energy conversion device, an air channel communicated with the air chambers is arranged in the top cover, and a turbine generator.
2. The novel wave energy power generation structure of claim 1, characterized in that: the number of hinges is three.
3. The novel wave energy power generation structure of claim 1, characterized in that: the hinge opening and closing angle ranges from 0 to 90 degrees.
4. The novel wave energy power generation structure of claim 1, characterized in that: the mooring system is a catenary anchor leg mooring device.
5. The novel wave energy power generation structure of claim 1, characterized in that: offshore fixtures include, but are not limited to, catenary buoys or seabed surfaces.
6. The novel wave energy power generation structure of claim 1, characterized in that: the length of each of the two ship bodies is 90 m; three oscillating water column type wave energy conversion devices are respectively arranged on the ship bodies of the two ship bodies.
7. The novel wave energy power generation structure of claim 1, characterized in that: the vertical section of the opening of the air chamber is rectangular; the gas channel is located in the center of the top cover.
8. The novel wave energy power generation structure of claim 1, characterized in that: the ship body, the hinge and the mooring system are all made of seawater corrosion resistant materials or are treated by a seawater corrosion resistant process.
9. A power generation method using the power generation structure of claim 1, characterized in that: after the power generation structure is installed in place and started, the power generation structure can rotate around an offshore fixed object along with the change of the wave direction through a mooring system, so that the opening angles of the two ship bodies always face incident waves; the hinge changes the opening and closing angle within the range of 0-90 degrees according to the size of the waves; the fluctuation of waves entering the air chamber from the air chamber opening of each oscillating water column type wave energy conversion device causes the air pressure difference inside and outside the air chamber, thereby pushing the air turbine in the air channel at the top of the air chamber to rotate and driving the generator set to generate electricity.
10. The power generation method according to claim 9, characterized in that: when extreme sea conditions occur, the opening and closing control system controls the opening and closing angle of the hinge to be reduced to 0 degree, and at the moment, the two ship bodies are closed to form a monohull ship.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010302452.0A CN111535977B (en) | 2020-04-17 | Wave energy power generation structure and power generation method | |
| ZA2020/07635A ZA202007635B (en) | 2020-04-17 | 2020-12-08 | A structure and method of wave energy power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010302452.0A CN111535977B (en) | 2020-04-17 | Wave energy power generation structure and power generation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111535977A true CN111535977A (en) | 2020-08-14 |
| CN111535977B CN111535977B (en) | 2024-05-10 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19504356A1 (en) * | 1995-02-10 | 1996-08-14 | Oejvind Boltz | Multiple system wave energy converter for electricity generation |
| CN107044379A (en) * | 2017-04-26 | 2017-08-15 | 中国科学院广州能源研究所 | A kind of marine self-propulsion type green energy resource electric power supply apparatus |
| CA2933753A1 (en) * | 2016-06-21 | 2017-12-21 | Wave Energy Conversion Corporation of America | System and method for renewable electrical power production using wave energy |
| CN108518299A (en) * | 2018-06-11 | 2018-09-11 | 涂洁 | A kind of ocean cumulative power generator |
| CN212337523U (en) * | 2020-04-17 | 2021-01-12 | 中国海洋大学 | Novel wave energy power generation structure |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19504356A1 (en) * | 1995-02-10 | 1996-08-14 | Oejvind Boltz | Multiple system wave energy converter for electricity generation |
| CA2933753A1 (en) * | 2016-06-21 | 2017-12-21 | Wave Energy Conversion Corporation of America | System and method for renewable electrical power production using wave energy |
| CN107044379A (en) * | 2017-04-26 | 2017-08-15 | 中国科学院广州能源研究所 | A kind of marine self-propulsion type green energy resource electric power supply apparatus |
| CN108518299A (en) * | 2018-06-11 | 2018-09-11 | 涂洁 | A kind of ocean cumulative power generator |
| CN110195679A (en) * | 2018-06-11 | 2019-09-03 | 涂洁 | Ocean cumulative power generator |
| CN212337523U (en) * | 2020-04-17 | 2021-01-12 | 中国海洋大学 | Novel wave energy power generation structure |
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| ZA202007635B (en) | 2021-05-26 |
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