CN117469076A - Water column type wave energy power generation device with self-adaptive adjusting cavity oscillation combined with fan - Google Patents
Water column type wave energy power generation device with self-adaptive adjusting cavity oscillation combined with fan Download PDFInfo
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- CN117469076A CN117469076A CN202311826180.4A CN202311826180A CN117469076A CN 117469076 A CN117469076 A CN 117469076A CN 202311826180 A CN202311826180 A CN 202311826180A CN 117469076 A CN117469076 A CN 117469076A
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- 238000010248 power generation Methods 0.000 title claims abstract description 52
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- 230000003044 adaptive effect Effects 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 239000013535 sea water Substances 0.000 claims description 6
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- 230000005611 electricity Effects 0.000 claims description 3
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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
- F03B13/24—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 to produce a flow of air, e.g. to drive an air turbine
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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
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
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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
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/008—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations the wind motor being combined with water energy converters, e.g. a water turbine
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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
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/705—Application in combination with the other apparatus being a wind turbine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
-
- 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
-
- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The application discloses fan combines self-adaptation to adjust cavity oscillation water column type wave energy power generation facility belongs to energy utilization equipment field, has solved the problem of "can only improve energy capture efficiency or rely on the rear end control action delay" among the prior art through wave condition size. In the technical scheme of the application, the lower part of the fan support post, which is positioned at the sea level position, is provided with a plurality of flexible air bags, and all the flexible air bags are annularly distributed around the lower part of the fan support post; the flexible air bag is integrally used as the outer wall of the OWC air chamber; after the shape of the flexible air bag is adjusted according to the change of the wave condition, the shape of an OWC air chamber formed by the flexible air bag is driven to change; each flexible air bag is respectively connected with an energy conversion device. The self-adaptive adjusting chamber OWC technology has the beneficial effects that based on the shape adjustability of the flexible air bag and the structural characteristics of the chamber, the chamber is allowed to flexibly adjust the shape according to the change of the wave condition, so that the optimal wave energy capturing and converting are realized.
Description
Technical Field
The invention relates to a water column type wave energy power generation device with a fan combined with a self-adaptive adjusting cavity, and belongs to the field of energy utilization equipment.
Background
The OWC (Oscillating Water Column) device mainly comprises an air chamber, which is formed by an empty box, an opening is arranged at the part of the air chamber submerged below the water surface, and an air flow channel (air inlet and outlet) is arranged at the upper part of the air chamber. The motion of the wave drives the motion of the water level in the air chamber, which in turn causes a change in air pressure, which drives the turbine to rotate, converting the wave energy into mechanical energy.
The flexible air bag is a flexible inflatable body with adjustable shape and is widely used in a plurality of fields such as offshore lifesaving, water sports, power machinery and transmission systems, buildings, ships and the like.
The research of OWC technology has focused mainly on two aspects. First, technological innovations aim to increase the energy conversion efficiency as much as possible to enhance the performance of wave energy power generation devices. This research has involved various engineering and technical innovations to improve the capture of wave energy and the energy conversion process, thereby improving the efficiency and reliability of the system. Secondly, researchers also aim to combine the OWC device with other devices to realize diversification of device functions so as to make up for the short plates with higher cost of the OWC technology.
At present, after the structure of the oscillating water column wave energy power generation device is determined, the natural frequency of the oscillating water column wave energy power generation device is determined, the oscillating water column wave energy power generation device cannot be optimized through a primary energy conversion stage, the energy capturing capacity of the whole device can only be changed when the wave condition changes, the ocean resource matching degree is low, the oscillating water column wave energy power generation device cannot be adjusted according to the wave condition, and the energy capturing efficiency is improved. In addition, the existing wave energy device mostly carries out control strategies in two-stage and three-stage energy conversion stages, and has high requirements on sensitivity and robustness of the device.
Disclosure of Invention
Aiming at the problem that the energy capturing efficiency can only be improved through the wave condition size or the action delay is controlled by the rear end in the prior art, the invention provides the fan combined self-adaptive cavity oscillation water column type wave energy power generation device, and the self-adaptive cavity OWC technology is designed based on the shape adjustability of the flexible air bag and the cavity structural characteristics thereof, so that the cavity is allowed to flexibly adjust the shape according to the change of the wave condition, and the optimal wave energy capturing and conversion are realized.
The technical scheme adopted by the invention is that the self-adaptive cavity adjusting oscillating water column type wave energy power generation device comprises a fan support, wherein the lower part of the fan support, which is positioned at the sea level, is provided with a flexible air bag, and the flexible air bag is connected with an energy conversion device;
an OWC air chamber is arranged in the flexible air bag; the volume of the OWC air chamber of the flexible air bag is adjusted according to the change of the wave condition;
the lower part of the fan support is provided with a plurality of flexible air bags, and all the flexible air bags are annularly distributed around the lower part of the fan support;
each flexible air bag is respectively connected with an energy conversion device.
Optimally, the fan is combined with the self-adaptive adjusting cavity oscillating water column type wave energy power generation device, and the fan support is a fan platform of an offshore fan;
the energy conversion device is a turbine system.
Optimally, the fan is combined with the self-adaptive adjusting cavity to oscillate the water column type wave energy power generation device, the top of the OWC air chamber of the flexible air bag is provided with a top opening, and the top opening is connected with the turbine system; seawater enters the OWC air chamber of the flexible air bag and presses air in the OWC air chamber of the flexible air bag, and the air in the OWC air chamber of the flexible air bag flows through the turbine system and generates electricity.
Optimally, the fan is combined with the self-adaptive adjusting cavity to oscillate the water column type wave energy power generation device, and the side wall of the bottom of the OWC air chamber of the flexible air bag is provided with an opening with a shrinkage water channel;
the opening direction of the opening hole is arranged towards the direction far away from the fan support column.
Optimally, the fan is combined with the self-adaptive adjusting cavity oscillating water column type wave energy power generation device, and the inlet opening size of the perforated contracted water channel is larger than the outlet opening size; optimizing, wherein the shrinkage coefficient of the perforated water channel is between 0.36 and 1.00;
the open mouth of the open-celled constricted watercourse is arranged to flare outwardly at an obtuse angle.
Optimally, the fan is combined with the self-adaptive adjusting cavity oscillating water column type wave energy power generation device, the lower part of the fan support is provided with a circular ring system, and the circular ring system is sleeved on the lower part of the fan support in an annular shape;
the lower part of the fan support is provided with a pulley type link system; the ring system slides along the lower portion of the fan post and is driven with the fan post by a pulley type linkage system.
The pulley type link system comprises pulleys and sliding rails; the ring system slides along the lower portion of the fan post and is driven with the fan post by a pulley type linkage system.
Optimally, the fan is combined with the self-adaptive adjusting cavity to oscillate the water column type wave energy power generation device, a plurality of through holes penetrating through the circular ring system are formed in the circular ring system, and the flexible air bags penetrate through the through holes of the circular ring system and are arranged in the through holes of the circular ring system; the through holes of the circular ring system support the outer part of the flexible air bag, and the flexible air bag is relatively fixed with the circular ring system.
Optimally, the fan is combined with the self-adaptive adjusting cavity oscillating water column type wave energy power generation device, an external fan platform is fixed at the lower part of the fan support, and the external fan platform is positioned above the circular ring system;
the upper end of the flexible air bag is connected with the external fan platform through the annular hoop and the pulley type connecting system, so that the combination stability of the annular hoop and the pulley type connecting system can be guaranteed, the height of the wave energy device can be adjusted, and the working time of the device is guaranteed.
The top of the flexible air bag is provided with a hole to be connected with the turbine system to form a complete wave energy power generation device, and the complete wave energy power generation device is integrally connected with the fan platform in a rigid mode to form an integral structure.
The complete wave energy power generation device integral structure is connected with the circular ring system, so that stress at the joint of the flexible air bag and the fan platform is reduced, and integral stability is optimized.
The circular ring system is connected with the pulley type link system, wherein the pulley is rigidly connected inside the circular ring system, the sliding rail is rigidly connected on the outer wall of the fan support, the pulley type link system drives the flexible air bag, the fan platform and the circular ring system to wholly ascend or descend along the fan support, the height of the wave energy device is adjusted, and the working time of the device is guaranteed.
Optimally, the fan is combined with the self-adaptive adjusting cavity oscillating water column type wave energy power generation device, a control knob is arranged behind the flexible air bag, and an intelligent chip is arranged in the control knob and is connected with a coordination control system on the sharing platform; the flexible air bag adjusts the volume of the air chamber according to different wave conditions;
under the condition of strong waves/long waves, the volume of the air chamber is increased before waves arrive so as to increase the volume of air in the air chamber;
under the condition of weak waves/short waves, the air chamber is contracted at the same time when waves reach the device, and gas is co-extruded;
during wave energy conversion, the air chamber volume can be adjusted according to energy demand and supply.
Optimally, the fan is combined with the self-adaptive adjusting cavity oscillating water column type wave energy power generation device, the flexible air bag comprises a plurality of air bag bodies, all the air bag bodies are arranged around the OWC air chamber, and the flexible air bag is formed by connecting all the air bag bodies;
the OWC air chamber is formed by wrapping all air bag bodies; two adjacent air bag bodies are communicated, and the air bag bodies are isolated from the OWC air chamber;
a framework is arranged in the flexible air bag and supports the flexible air bag from the inside of the flexible air bag;
when the flexible air bag is inflated, the air bag body is inflated, and the volume of the OWC air chamber is reduced;
when the flexible air bag is deflated, the air bag body is contracted, and the volume of the OWC air chamber is increased.
The beneficial effects of this application lie in:
air chamber structure and adaptability adjustment: in the present invention, the chamber of the flexible bladder is modified to be an OWC air chamber. By fully utilizing the shape adjustability of the flexible air bag, the air chamber can flexibly adjust the shape according to the change of the wave condition. This design caters for the variability of wave energy, thereby maximizing capture and conversion of wave energy.
System integration and cost reduction: the wave energy power generation system is tightly combined with the existing fan platform, and the power transmission and power generation system is shared. The wave energy device designs a capacity optimization matching mode of the super capacitor and the storage battery of the energy storage system, adopts a wave energy maximum output power tracking algorithm, and optimizes power output on the premise of ensuring system safety. The wave energy device power conversion system comprises a rectifying, energy storage and inversion module, wherein the inversion output is connected with a high-voltage alternating current bus of the fan, and the grid-connected specification required by the fan is followed; and the SCADA system is designed to realize the whole process real-time monitoring of the OWC device, the power change system and the environmental parameters. The integration scheme not only reduces the power generation cost, but also improves the utilization efficiency of the whole device, and realizes the optimal utilization of resources.
Annular array and convergent channel: in order to solve the problem of low efficiency of the traditional unilateral wave-facing device, the design of an annular array is adopted. The plurality of OWC air chambers are distributed into the ring shape around the fan support column, so that the absorption of multidirectional wave energy is realized. The arrangement mode can obviously improve the utilization rate of wave energy and fully exert the performance advantage of the system. A converging flume is introduced at the inlet of the plenum. Through careful design of the contraction structure of the water channel, proper contraction coefficient and water channel form are selected, so that the working performance of the air chamber can be optimized, and the air chamber can be excellent under different wave conditions.
Ring system adaptation: an adaptive tuning chamber OWC device is integrated on the annular system. The system is connected with the fan support column through a pulley type link system, and the water surface position can be automatically adjusted according to tidal change. The pulley type link system mainly controls the wave energy device to move up and down along the fan support, and when the water level is lowered, the device is lowered to better adapt to the tide level, so that the contracted water channel is submerged below the water surface. The intelligent regulation ensures that the device always keeps at the optimal water surface position, whether the tide is high or low, and the working efficiency of the device under different tide levels is ensured.
Drawings
FIG. 1 is a composite plant overall diagram of a fan-combined adaptive cavity-regulated oscillating water column type wave energy power plant;
FIG. 2 is a block diagram of a wave power assembly;
FIG. 3 is a top view of the wave power assembly;
FIG. 4 is a detailed view of the wave power assembly;
FIG. 5 is a schematic structural view of a skeleton of the wave power assembly;
FIG. 6 is a block diagram of a flexible bladder;
FIG. 7 is an axial cross-sectional block diagram of the flexible bladder;
FIG. 8 is a radial cross-sectional view of the structure of the flexible bladder as it expands;
fig. 9 is a radial cross-sectional view of the flexible bladder as it is contracted.
The air conditioner comprises a fan support column 1, an external fan platform 2, a flexible air bag 3, an opening hole 4, a turbine system 5, a circular ring system 6, an air bag control knob 7, a pulley type linkage system 8, an electric control system 9, a hollow center 10 and a cable system 11.
Detailed Description
The technical features of the present invention are further described below with reference to the accompanying drawings and the specific embodiments.
The application discloses a fan combined self-adaptive adjusting cavity oscillating water column type wave energy power generation device,
the device structural design thinking of the flexible airbag 3 is that the chamber of the flexible airbag 3 is changed into an OWC air chamber, and the shape of the chamber is flexibly adjusted according to the change of the wave condition by utilizing the shape adjustability of the flexible airbag 3.
The chamber structure and the direction of change of the adaptive tuning chamber OWC of the present application can be determined at the beginning of the design of the flexible bladder 3. In this embodiment, a columnar flexible balloon is used, and the deformation change direction is a vertical direction change. The flexible air bag 3 is used as an OWC cavity, the bottom and the top are respectively provided with an opening, the opening at the bottom is designed as an opening 4 with a contracted water channel, the contracted water channel can improve the capturing efficiency of wave energy, and the working performance of the contracted water channel structure is better. The top opening is connected with the turbine system 5 to form an oscillating water column wave energy power generation device for generating power by enabling air in the primary seawater extrusion cavity to flow through a turbine stage of the turbine system 5.
The whole change of the flexible air bag 3 in self-adaptive adjustment is that the flexible air bag is enlarged and reduced in the reserved range of the disc, so that the change of the volume change of the cavity is achieved. The material of the flexible air bag 3 is not completely flexible, has certain rigidity, can bear wave force, can effectively reduce extreme load, improves service life of the device, is provided with holes at the top of the flexible air bag 3 and is connected with an external fan platform 2, is integrated with a circular ring system 6, is connected with a fan support column 1 through a pulley type linkage system 8, and can keep certain stability for the wave energy integral device.
The top of the flexible air bag 3 is provided with a hole to be connected with the turbine system 5 to form a complete wave power generation device, and the complete wave power generation device is integrally connected with the fan platform 2 in a rigid mode to form an integral structure.
The complete wave energy power generation device overall structure is connected with the circular ring system 6, so that stress at the joint of the flexible air bag 3 and the fan platform 2 is reduced, and overall stability is optimized.
The circular ring system 6 is connected with the pulley type link system 8, wherein the pulley 801 is rigidly connected inside the circular ring system 6, the sliding rail 802 is rigidly connected on the outer wall of the fan support 1, the pulley type link system 8 drives the flexible air bag 3, the fan platform 2 and the circular ring system 6 to wholly ascend or descend along the fan support 1, and then the height of the wave energy device is adjusted, so that the working time of the device is ensured.
In this application, the flexible balloon 3 is provided in the form of a plurality of balloon bodies 301 connected and formed. The entire bladder body 301 is disposed around the OWC air chamber skeleton such that the OWC air chamber is formed around the entire bladder body 301.
The two adjacent air bag bodies 301 are communicated, and the air bag bodies 301 are isolated from the OWC air chamber.
As shown in the figure, when the flexible airbag 3 inflates, the airbag 301 expands, and the airbag 301 bulges toward the inner wall of the OWC chamber in the OWC chamber direction, so that the volume of the OWC chamber decreases.
When the flexible airbag 3 is deflated, the airbag body 301 contracts, and the inner wall of the airbag body 301 toward the OWC chamber contracts in a direction away from the OWC chamber, so that the volume of the OWC chamber increases.
In order to support the flexible bladder 3 when the flexible bladder 3 is deflated, the flexible bladder 3 is nested above the OWC air chamber skeleton in the present application, the skeleton supporting the flexible bladder 3 from inside the flexible bladder 3.
In order to change the characteristics that most of the existing oscillating water column type wave energy devices are single-side waves, the waves in different directions cannot be well absorbed, and the utilization rate of the waves in different directions is low. The wave energy device and the blower are combined in a mode that the wave energy device surrounds the blower support column 1, namely the blower support columns are distributed in an annular array as shown in fig. 2, and the purpose of absorbing waves in different directions is achieved.
The arrangement of the flexible air bags 3 should be chosen on the premise that the spacing and density between the OWC devices are carefully designed to balance the efficiency and footprint of the devices. Proper spacing can avoid mutual interference between waves while maintaining sufficient density to ensure overall energy capture.
The adaptive tuning chamber OWC does not employ a shared air chamber, but rather each flexible bladder 3 is provided with a turbine system 5. Because one of the functions of the self-adaptive adjusting chamber is to form high-speed flowing air flow to drive the turbine to generate electricity efficiently through the extrusion of seawater and the instantaneous change of the volume of the chamber. If the air movement distance is too long, energy may be lost.
In order to reduce the power generation cost, the invention aims to add a wave energy power generation system on the basis of the existing externally-added fan platform 2, and the wave energy power generation system shares a set of transmission system and a generator in a mechanical coupling mode, so that the power generation cost is effectively reduced, and the platform utilization rate is improved. In this case, the additional fan platform 2 may be a fan own platform.
The shrinkage water channel of the opening 4 is arranged at the inlet of the OWC air chamber, and the wave energy conversion efficiency of the shrinkage water channel structure is higher than that of a parallel water channel structure and a water-free channel structure. The channel shrinkage coefficient and channel form of the shrinkage channel have great influence on the working performance of the air chamber, an optimal coefficient interval exists, the channel shrinkage coefficient is optimized to be between 0.36 and 1.00, and the folded line type shrinkage channel folded into an obtuse angle has better wave energy absorption effect than the linear shrinkage channel and the channel folded into a right angle, so that the composite device structure adopts the obtuse angle folded line type shrinkage channel with the channel inlet width of 14.0m, the outlet width of 5.0m and the shrinkage coefficient of 0.36 to 1.00.
The OWC air chamber of this application comprises flexible gasbag 3, installs control knob 7 behind the flexible gasbag 3, and control knob 7 contains intelligent chip and is connected with the coordinated control system on the sharing platform to realize, flexible gasbag 3 can carry out the change size at any time according to different wave conditions. By adjusting the volume of the OWC air chamber, the adaptive adjustment can be performed according to different wave conditions.
The top view structure of the sharing platform, the wave condition around the device can be transmitted to the sharing platform through the wave height instrument (the wave height instrument is an independent device and can be used in the existing common model), the sharing platform classifies the size of the wave through data, and the control knob 7 on the flexible air bag 3 is controlled to be amplified and contracted through the coordination control center.
At present, after the structure of the oscillating water column wave energy power generation device is determined, the natural frequency of the oscillating water column wave energy power generation device is determined, the oscillating water column wave energy power generation device cannot be optimized through a primary energy conversion stage, the energy capturing capacity of the whole device can only be changed when the wave condition changes, the ocean resource matching degree is low, the oscillating water column wave energy power generation device cannot be adjusted according to the wave condition, and the energy capturing efficiency is improved. The flexible air bag is adopted to change the air chamber structure, so that the wave energy device is suitable for multi-frequency wave conditions, the conversion efficiency of the device is improved, and the device is more suitable for the resource conditions in China. In addition, the existing wave energy device mostly carries out control strategies in the two-stage and three-stage energy conversion stages, the requirements on the sensitivity and the robustness of the device are high, and the scheme starts from the first-stage energy conversion stage, so that the stability of the structure can be ensured. Meanwhile, all waves are loaded less by adopting the flexible material, the flexible material is not easy to interact with marine microorganisms, and the safety and reliability of the device are guaranteed.
Under the condition of strong waves, the volume of the OWC air chamber can be increased before waves arrive to increase the volume of air in the air chamber, and when the strong waves/long waves arrive, more air flows can pass through the turbine due to the effect of pressure difference, so that the power generation time is prolonged. Under the condition of weak waves/short waves, less seawater enters the OWC air chamber, so that the pressure change is smaller, and the air flow flowing through the turbine is relatively smaller.
In order to increase the generated energy, the OWC air chamber can be reduced at the same time when waves arrive at the device, and the air is squeezed together so as to achieve larger generated energy. By adjusting the volume of the OWC air chamber, the absorption and release of energy can be precisely controlled. In the wave energy conversion process, the volume of the OWC air chamber can be adjusted according to energy requirements and supply conditions so as to realize efficient conversion and storage of energy. The energy regulation and control function can improve the energy utilization efficiency and better adapt to the energy requirements of the cultivation equipment or other equipment.
In order to adapt to the continuous change of the local tide level, the self-adaptive adjusting chambers OWC arranged in an array mode are connected into a whole through a circular ring system. The ring system 6 is linked with the fan strut through a pulley type linking system 8, so that the ring system can move up and down along a chain type track through pulleys. The lifting of the disc is controlled according to the tide level detection or the local tide rising and falling law so as to keep the whole OWC device at the optimal water surface position forever, whether in the tide peak or the tide valley.
In the application, the shared infrastructure comprises an electric control center system and a coordination control system. The electric control center mainly gathers the electric energy generated by the fan and the wave energy device and conveys the electric energy to the next position. The coordination control system is mainly used for intelligently controlling the OWC system, such as the self-adaptive adjusting chamber and the disc system to lift.
The coordination control system has the function of monitoring wave conditions and water levels in real time. The purpose of detecting the wave condition is to make the self-adaptive adjusting chamber capable of changing the volume before different wave conditions arrive, so that the device can better adapt to and absorb each wave condition and the power generation efficiency is improved. The purpose of monitoring the water level is to automatically adjust the water inlet position of the device, so that the device is prevented from being fully exposed below or above the sea water level to cause a power generation empty window period when the tide rises or falls.
Finally, after the array is arranged, an appropriate monitoring and management system needs to be established to monitor the performance and the running condition of the device. This includes periodic checks and evaluations of wave energy conversion efficiency, power production, plant status, etc., to ensure proper operation and maintenance of the array.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that various changes, modifications, additions and substitutions can be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a fan combines self-adaptation to adjust cavity oscillation water column formula wave energy power generation facility, includes fan pillar (1), and fan pillar (1) is located the lower part of sea level position and has flexible gasbag (3), and flexible gasbag (3) are connected with energy conversion device; the method is characterized in that:
an OWC air chamber is arranged in the flexible air bag (3); the volume of the OWC air chamber of the flexible air bag (3) can be actively adjusted according to the change of wave conditions;
the lower part of the fan support (1) is provided with a plurality of flexible air bags (3), and all the flexible air bags (3) are annularly distributed around the lower part of the fan support (1);
each flexible air bag (3) is respectively connected with an energy conversion device.
2. The fan-combined adaptive cavity-regulated oscillating water column type wave energy power generation device according to claim 1, wherein: the fan support (1) is a fan platform of an offshore fan;
the energy conversion device is a turbine system (5).
3. The fan-combined adaptive cavity-regulated oscillating water column type wave energy power generation device according to claim 2, wherein:
the top of the OWC air chamber of the flexible air bag (3) is provided with a top opening, and the top opening is connected with a turbine system (5); seawater enters the OWC air chamber of the flexible air bag (3) and presses air in the OWC air chamber of the flexible air bag (3), and the air in the OWC air chamber of the flexible air bag (3) flows through the turbine system (5) and generates electricity.
4. The fan-combined adaptive cavity-regulated oscillating water column type wave energy power generation device according to claim 1, wherein: an opening (4) with a contracted water channel is formed in the side wall of the bottom of the OWC air chamber of the flexible air bag (3);
the opening direction of the opening (4) is arranged towards the direction far away from the fan support (1).
5. The fan-combined adaptive cavity oscillating water column type wave energy power generation device of claim 4, wherein:
the inlet opening size of the shrinkage water channel of the opening (4) is larger than the outlet opening size; the shrinkage coefficient of the water channel of the opening (4) is between 0.36 and 1.00;
the orifice type of the constricted watercourse of the orifice (4) is arranged in the form of an obtuse angle extension.
6. The fan-combined adaptive cavity-regulated oscillating water column type wave energy power generation device according to claim 1, wherein:
the lower part of the fan support column (1) is provided with a circular ring system (6), and the circular ring system (6) is sleeved on the lower part of the fan support column (1) in an annular shape;
the lower part of the fan support column (1) is provided with a pulley type link system (8); the circular ring system (6) slides along the lower part of the fan support (1) and is driven by the pulley type linkage system (8) and the fan support (1).
7. The fan-combined adaptive cavity-regulated oscillating water column type wave energy power generation device according to claim 6, wherein: the annular system (6) is provided with a plurality of through holes penetrating through the annular system (6), and the flexible air bag (3) penetrates through the through holes of the annular system (6) and is arranged in the through holes of the annular system (6); the through holes of the circular ring system (6) support the outside of the flexible air bag (3), and the flexible air bag (3) and the circular ring system (6) are relatively fixed.
8. The fan-combined adaptive cavity-regulated oscillating water column type wave energy power generation device according to claim 6, wherein: an external fan platform (2) is fixed at the lower part of the fan support column (1), and the external fan platform (2) is positioned above the circular ring system (6);
the upper end of the flexible air bag (3) is connected with the externally-added fan platform (2).
9. The fan-combined adaptive cavity-regulated oscillating water column type wave energy power generation device according to claim 1, wherein:
a control knob (7) is arranged behind the flexible air bag (3), and an intelligent chip is arranged in the control knob (7) and is connected with a coordination control system on the sharing platform;
the control knob (7) drives the coordination control system to adjust the inflation and deflation of the flexible air bag (3) through sensing incoming waves, and the flexible air bag adjusts the volume of the air chamber according to different wave conditions;
under the condition of strong waves or long waves, the volume of the air chamber is increased before waves arrive so as to increase the volume of the air in the air chamber;
under the condition of weak waves or short waves, the air chamber is contracted at the same time when waves reach the device, and gas is squeezed together;
during wave energy conversion, the air chamber volume is adjusted according to energy demand and supply.
10. The fan-combined adaptive cavity-regulated oscillating water column type wave energy power generation device according to claim 1, wherein:
the flexible air bag (3) comprises a plurality of air bag bodies (301), all the air bag bodies (301) are arranged around the OWC air chamber, and the flexible air bag (3) is formed by connecting all the air bag bodies (301);
the OWC air chamber is formed by wrapping all air bag bodies (301); two adjacent air bag bodies (301) are communicated, and the air bag bodies (301) are isolated from the OWC air chamber;
the flexible air bag (3) is nested on the rigid framework, and the framework supports the flexible air bag (3) from the inside of the flexible air bag (3), so that the rigidity of the whole device is ensured;
when the flexible air bag (3) is inflated, the air bag body (301) is inflated, and the volume of the OWC air chamber is reduced;
when the flexible airbag (3) is deflated, the airbag body (301) contracts and the volume of the OWC air chamber increases.
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