CN114150615B - Floating breakwater capable of eliminating medium-long period waves and unit thereof - Google Patents
Floating breakwater capable of eliminating medium-long period waves and unit thereof Download PDFInfo
- Publication number
- CN114150615B CN114150615B CN202111432036.3A CN202111432036A CN114150615B CN 114150615 B CN114150615 B CN 114150615B CN 202111432036 A CN202111432036 A CN 202111432036A CN 114150615 B CN114150615 B CN 114150615B
- Authority
- CN
- China
- Prior art keywords
- wave
- breakwater
- air chamber
- energy
- waves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007667 floating Methods 0.000 title claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims abstract description 43
- 230000033001 locomotion Effects 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000004873 anchoring Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 10
- 230000035899 viability Effects 0.000 claims description 6
- 239000004566 building material Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 5
- 239000011513 prestressed concrete Substances 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000004083 survival effect Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
- E02B3/062—Constructions floating in operational condition, e.g. breakwaters or wave dissipating walls
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention belongs to the technical field of coastal engineering, and particularly relates to a floating breakwater capable of eliminating medium and long-period waves and a unit thereof. According to the invention, an OWC device with high reliability is integrated with a floating breakwater, waves enter an air chamber from a wave incident hole, so that the wave energy is gathered in the air chamber, a water body in the air chamber is subjected to a large-amplitude lifting motion due to strong resonance, at the moment, the water body acts on an opening energy consumption plate arranged in the air chamber, the water body is converted into turbulent flow through the opening energy consumption plate, so that the obvious turbulent flow kinetic energy is dissipated, and the mechanical energy of the water body is effectively reduced; the water column in the air chamber makes a heaving motion to cause air above the water body to be strongly extruded, so that the conversion from the kinetic energy of the water body to the internal energy of the air is realized, and the conversion from the internal energy of the air to the turbulent kinetic energy is realized through the energy dissipation air holes. The invention has the characteristics of strong wave-absorbing capacity, high reliability, low manufacturing cost and low construction difficulty, and is suitable for a novel floating breakwater arrangement scheme under the condition of medium-long period wave sea.
Description
Technical Field
The invention belongs to the technical field of coastal engineering, and particularly relates to a floating breakwater capable of eliminating medium-long period waves and a unit thereof.
Background
The medium and long period waves have strong capability of penetrating through the wave-permeable breakwater and can bring serious harm to mooring ships, wharf operation and port facilities, so that the wave-absorbing problem of the medium and long period waves is of great practical significance.
The breakwater is an artificial structure, is an important component of coastal ports, and has the functions of preventing wave invasion, reducing wave strength, maintaining water surface stability and protecting coastal lines. The breakwater can be divided into a heavy breakwater and a light breakwater according to the structural type. The heavy breakwater comprises a slope breakwater, a straight wall breakwater, a hybrid breakwater and the like, and is the most common type of breakwater; the light breakwater is researched according to the characteristic that wave energy is concentrated in the triple wave height of the sea surface and the special requirements of engineering are combined, such as a floating breakwater, a comb breakwater, a permeable breakwater, a jet breakwater, a water jet breakwater and the like.
Wave energy refers to the kinetic energy and the potential energy that ocean surface wave has, and wave energy conversion equipment form is various, can divide into according to wave energy collection principle: oscillating water column type, oscillating floater type, wave-crossing type power generation technology and the like. The oscillating water column type (OWC) wave energy device is characterized in that an energy capturing air chamber is utilized to absorb wave energy, incident waves are transmitted into the energy capturing air chamber through an underwater opening, oscillating water columns are formed in the air chamber to compress air in the air chamber, the air is exchanged with air outside the air chamber through an opening of the air chamber, an air turbine is driven in the process, wave energy is converted into mechanical energy, and a power generation device is further driven to obtain electric energy. Its advantages are that the relatively fragile mechanical parts of turbine set are only contacted with the reciprocating air, and not directly acted by waves, avoiding the corrosion of wave force and sea water, and high reliability.
The breakwater configuration with higher wave-dissipating performance, higher survival capability, better economy and weaker ecological interference is especially necessary to search for the problems of high cost, limited applicable sea conditions, pollutant enrichment and the like of the traditional foundation breakwater and the problems of poor wave-dissipating effect, weak survival capability and the like of the traditional floating breakwater. Considering that the wave energy conversion device can effectively absorb wave energy, under the background, various scholars propose the concept that the wave energy device is integrated in the floating breakwater. Mustapa et al summarize the latest research progress of the integrated design of wave energy devices and breakwaters, discuss the capability of wave energy collection and energy dissipation of novel breakwaters of different structural types from several aspects such as reliability, timeliness and performance, and find that most of the research done in this field focuses on sea areas with severe wave conditions, while paying less attention to the long-period wave sea conditions faced by asian countries (Mustapa et al, 2017). The floating breakwaters are elastically connected and move relatively under the action of waves, and the air turbine is driven by the motion compressed air of the water body in the cabin to generate electricity, so that the off-shore marine structure can be shielded.
The method is characterized in that the problems of unsatisfactory wave-dissipating performance and weaker safety of the focusing floating breakwater under the action of long-period waves are solved, the breakwater structure is optimized, the construction cost is reduced, the wave-dissipating characteristic is enhanced, and the ecological environment is protected.
Disclosure of Invention
The invention aims to provide a floating breakwater capable of eliminating medium and long period waves and a unit thereof.
A floating breakwater unit capable of eliminating medium and long period waves comprises an OWC air chamber, a breakwater wave-facing wall and a breakwater wave-backing wall; the breakwater wave-facing wall and the breakwater back wave wall are respectively arranged on the left side and the right side of the OWC air chamber, buoyancy chambers are respectively arranged inside the breakwater wave-facing wall and the breakwater back wave wall, and waterproof building materials are filled in the buoyancy chambers to provide necessary buoyancy for the whole breakwater unit; a plurality of air chambers are separated from the inside of the OWC air chamber through OWC air chamber partition walls; the bottom surface of each air chamber is provided with a wave-entering perforation hole, the top surface of each air chamber is provided with an energy dissipation air hole, and an opening energy dissipation plate is arranged in each air chamber;
waves enter the air chamber from the wave incident holes, so that the wave energy is gathered in the air chamber, the water body in the air chamber is subjected to large-amplitude lifting motion due to strong resonance, at the moment, the water body acts on the perforated energy dissipation plate arranged in the air chamber, and the water body is converted into turbulent flow through the perforated energy dissipation plate to cause obvious turbulent flow kinetic energy dissipation, so that the mechanical energy of the water body is effectively reduced; the water column in the air chamber makes a heaving motion to cause air above the water body to be strongly extruded, so that the conversion from the kinetic energy of the water body to the internal energy of the air is realized, and the conversion from the internal energy of the air to the turbulent kinetic energy is realized through the energy dissipation air holes.
Furthermore, the width of the perforated energy dissipation plate is smaller than that of a single air chamber, and a multi-row arrangement mode is adopted, so that the design can not only increase the energy dissipation effect of water turbulence, but also reduce impact load to a certain extent, and improve the self viability of the breakwater.
Furthermore, as the resonance frequency of the water in the OWC air chamber is changed by the change of the size of the opening at the bottom end, the structural dimension of the wave entry hole formed in the bottom surface of the air chamber is determined according to the conditions of the medium-long wave sea conditions in the actual sea area, and the proper air chamber resonance frequency is designed based on the hydrodynamic characteristics of the OWC, so that the water in the OWC air chamber can generate a piston resonance phenomenon under the action of medium-long period waves, and further, a large amount of wave energy is gathered in the air chamber, and the gathering of the wave energy is realized.
A floating breakwater capable of eliminating medium and long period waves comprises a floating breakwater unit capable of eliminating medium and long period waves and an anchoring device; the floating breakwater units capable of eliminating the medium and long period waves are arranged in an array, breakwater wave-facing walls of the floating breakwater units capable of eliminating the medium and long period waves are positioned on the same side, and the adjacent floating breakwater units capable of eliminating the medium and long period waves are connected through a connecting device; the anchoring devices are arranged at the outer sides of the floating breakwater units which can eliminate medium-long period waves and are arranged at the two ends of the breakwater; the anchoring device restricts the movement of the breakwater under offshore conditions to improve wave breaking effect.
Furthermore, the connecting device is cast by prestressed concrete to offset or reduce the tensile stress generated by external load so as to ensure the viability of the floating breakwater in practical application.
Further, the anchoring means includes a cable connected to the bottom of the floating breakwater unit capable of eliminating long and medium cycle waves at both ends of the floating breakwater, and an anchor block anchored to the sea bottom to restrict the forced movement of the breakwater under the action of waves.
The invention has the beneficial effects that:
the OWC device with high reliability and the floating breakwater are integrated, medium-long period waves are gathered in the cavity to generate resonance based on Helmholtz water wave resonance effect, the wave absorption performance of the floating breakwater is effectively improved by adopting a pore energy consumption structure, and a novel floating breakwater arrangement scheme which has strong wave absorption capacity, high reliability, low manufacturing cost and low construction difficulty and is suitable for the medium-long period waves under sea conditions is formed.
Drawings
Fig. 1 is a front view of a structure of a floating breakwater unit for removing medium and long periodic waves according to the present invention.
Fig. 2 is a structural side view of a floating breakwater unit of the present invention which can eliminate medium and long-period waves.
Fig. 3 is a top view of a floating breakwater unit according to the present invention for dissipating long and medium wave waves.
Fig. 4 is a perspective view (front view) of the general structure of a floating breakwater unit for dissipating a medium-long period wave according to the present invention.
Fig. 5 is a perspective view (side view) of the general structure of a floating breakwater unit capable of dissipating medium and long wave waves according to the present invention.
Fig. 6 is a front view of a floating breakwater according to the present invention for removing medium and long wave waves.
Fig. 7 is a side view of a floating breakwater according to the present invention for dissipating long and medium wave waves.
Fig. 8 is a top view of a floating breakwater structure for dissipating long and medium wave waves according to the present invention.
Fig. 9 is an isometric view of a floating breakwater structure of the present invention that eliminates long and medium wave cycles.
Fig. 10 is a perspective view illustrating the construction of a floating breakwater according to the present invention, which can eliminate medium and long wave waves.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The invention provides a novel floating breakwater structure design method capable of resisting medium and long waves, and mainly aims to design a novel floating breakwater arrangement scheme which is based on Helmholtz water wave resonance effect, has strong wave-absorbing capacity, low manufacturing cost and low construction difficulty and is suitable for long-period wave sea conditions in sea areas.
A floating breakwater unit capable of eliminating medium and long period waves is characterized in that: comprises an OWC air chamber, a breakwater wave-facing wall 10 and a breakwater wave-backing wall 11; the breakwater wave-facing wall 10 and the breakwater back wave wall 11 are respectively arranged at the left side and the right side of the OWC air chamber, buoyancy chambers 9 are respectively arranged inside the breakwater wave-facing wall 10 and the breakwater back wave wall 11, and waterproof building materials are filled in the buoyancy chambers 9 to provide necessary buoyancy for the whole breakwater unit; a plurality of air chambers are separated from the inside of the OWC air chamber through an OWC air chamber partition wall 2; the bottom surface of each air chamber is provided with a wave-shaped penetration hole 6, the top surface of each air chamber is provided with an energy dissipation air hole 8, and an opening energy dissipation plate 7 is arranged in each air chamber;
waves enter the air chamber from the wave inlet holes 6, so that the wave energy is gathered in the air chamber, the water body in the air chamber performs large-amplitude lifting motion due to strong resonance, at the moment, the water body acts on the perforated energy dissipation plate 7 arranged in the air chamber, the water body is converted into turbulence through the perforated energy dissipation plate 7, obvious turbulence kinetic energy is dissipated, and the mechanical energy of the water body is effectively reduced; the water column in the air chamber makes a heaving motion to cause air above the water body to be strongly extruded, so that the conversion from the kinetic energy of the water body to the internal energy of the air is realized, and the energy-contained air passes through the energy dissipation air hole 8 to realize the conversion from the internal energy of the air to the turbulent kinetic energy.
The width of the perforated energy dissipation plate 7 is smaller than that of a single air chamber, and a multi-row arrangement mode is adopted, so that the design can increase the turbulent energy dissipation effect of a water body, reduce impact load to a certain extent and improve the self viability of the breakwater.
Because the resonance frequency of the water body in the OWC air chamber is changed by the change of the size of the opening hole at the bottom end, the structural size of the wave entry perforation hole 6 formed in the bottom surface of the air chamber is determined according to the conditions of medium and long wave sea conditions in an actual sea area, and the proper resonance frequency of the air chamber is designed based on the hydrodynamic characteristics of the OWC, so that the water body in the OWC air chamber can generate a piston resonance phenomenon under the action of medium and long period waves, and then a large amount of wave energy is gathered in the air chamber, and the gathering of the wave energy is realized.
A floating breakwater capable of eliminating medium and long period waves comprises a floating breakwater unit capable of eliminating medium and long period waves and an anchoring device 13; the floating breakwater units capable of eliminating the medium and long period waves are arranged in an array, breakwater wave-facing walls 10 of the floating breakwater units capable of eliminating the medium and long period waves are positioned on the same side, and the adjacent floating breakwater units capable of eliminating the medium and long period waves are connected through a connecting device 12; the anchoring devices 13 are arranged at the outer sides of the floating breakwater units which can eliminate medium-long period waves and are arranged at the two ends of the breakwater; the anchoring device 13 restricts the movement of the breakwater under offshore conditions to improve the wave-breaking effect.
The connecting device 12 is cast by prestressed concrete to offset or reduce the tensile stress generated by external load, so as to ensure the viability of the floating breakwater in practical application.
The anchoring device 13 includes a cable connected to the bottom of the floating breakwater unit capable of dissipating long and medium periodic waves at both ends of the floating breakwater, and an anchor block anchored to the sea floor to restrict the forced movement of the breakwater under the action of waves.
Example 1:
a novel floating breakwater capable of eliminating medium-long period waves mainly comprises the following systems: OWC wave energy collection systems, wave energy dissipation systems, platform carrier systems.
OWC wave energy concentrating systems. The OWC air chamber front wall 1, the OWC air chamber partition wall 2, the OWC air chamber rear wall 3, the top support body 4 and the bottom support body 5 are all prefabricated by reinforced concrete. The size of the strip-shaped opening 6 needs to be combined with the actual sea condition wave conditions, and a proper air chamber resonance frequency is designed based on the OWC hydrodynamic characteristics, so that under the action of medium-long period waves, water in the OWC air chamber can generate a piston resonance phenomenon, namely the wave energy gathering efficiency is maximum.
A wave energy dissipation system. And the multi-row perforated energy dissipation plates 7 are of steel structures and are arranged below the OWC air chambers, and the plate spacing is not too large. The aperture ratio of the perforated energy dissipation plate 7 determines the capacity of wave turbulence energy dissipation, and a numerical simulation method can be adopted to provide a design reference during actual design. The energy dissipation air holes 8 penetrate through the top support body to convert the high-energy gas extruded by the rising and sinking motion of the water column in the air chamber into turbulent kinetic energy for dissipation.
A platform carrier system. The breakwater wave-facing wall 10 and the breakwater back wave wall 11 are prefabricated by reinforced concrete. The buoyancy chamber 9 is filled with waterproof building materials, and the buoyancy requirement of the floating breakwater is met. The connecting devices 12 among the units are poured by prestressed concrete, so as to offset or reduce the tensile stress generated by external load, and ensure the survival capability of the floating breakwater in practical application. The anchoring device 13 comprises a cable connected to the bottom of the units at both ends of the floating breakwater and anchor blocks anchored to the sea floor to limit the forced movement of the breakwater under the action of waves.
The structural size of the strip-shaped opening 6 needs to be determined according to the medium-long wave sea condition of the actual sea area, because the resonance frequency of the water body in the OWC air chamber can be changed by the size change of the opening at the bottom end. When the OWC device which is reasonably designed acts on medium and long waves, the period is consistent with the self-vibration period of a water body in the OWC air chamber, a strong piston resonance phenomenon is generated, and then a large amount of wave energy is gathered in the air chamber, so that the wave energy gathering is realized. Three air chambers are stored in the OWC wave energy gathering system, and all the air chambers are connected through OWC air chamber partition walls 2, so that the design can increase the gathering bandwidth of incident waves, effectively adapt to actual sea conditions, and enhance the wave energy gathering effect. Note: the shape of the resonant cavity and the shape of the opening at the bottom end of the OWC air chamber are not unique, and the changes of the shapes of the resonant cavity and the opening at the bottom end of the OWC air chamber belong to the protection scope of the patent. Here, the design of the strip-shaped openings 6 is taken as an example, and it is within the scope of the present patent disclosure to change the design into other irregular holes or multiple holes. The design principle of the shape of the resonant cavity and the shape of the opening at the bottom end of the OWC air chamber are based on the Helmholtz water wave resonance effect, so that the resonance frequency inside the cavity is shifted to improve the wave energy gathering efficiency under the actual sea condition.
The wave energy dissipation system consists of a plurality of rows of perforated energy dissipation plates 7 and energy dissipation air holes 8. The OWC wave energy gathering system gathers wave energy in the air chamber, and a water body in the air chamber performs large-amplitude lifting motion due to strong resonance, and acts on the perforated energy dissipation plate arranged in the air chamber. The perforated energy dissipation plate can effectively reduce the mechanical energy of the water body, and the principle of the perforated energy dissipation plate is that the water body is converted into turbulent flow through the perforated energy dissipation plate 7 to cause obvious turbulent flow kinetic energy dissipation. The width of the perforated energy dissipation plate 7 is smaller than that of a single air chamber, and a multi-row arrangement mode is adopted, so that the effect of water body turbulence energy dissipation can be increased, impact load is reduced to a certain extent, and the survival capability of the breakwater is improved. Energy dissipation gas hole 8 is arranged in the top support body, and the air above the water body is strongly extruded due to the fact that the water column in the air chamber makes heave motion, so that conversion from kinetic energy of the water body to internal energy of the gas is achieved, and the energy-contained gas passes through the energy dissipation gas hole, and conversion from the internal energy of the gas to turbulent kinetic energy is achieved.
The platform carrier system comprises buoyancy chambers 9, a breakwater wave-engaging wall 10, a breakwater back wave wall 11, connecting means 12 and anchoring means 13. The buoyancy chamber 9 is filled with waterproof building materials, so that necessary buoyancy is provided for the novel breakwater integrally, and the living condition of the structure on the sea is guaranteed. The outer sides of the breakwater wave-facing wall 10 and the breakwater wave-backing wall 11 are in contact with an external water body, so that the effect of resisting short wave waves can be achieved, the wave height after the waves penetrate the breakwater is reduced, and shielding is provided for a rear marine structure. The plurality of monomer units form the array breakwater through the connecting device 12, the number of the array units can be adjusted according to actual sea conditions, and therefore the arrangement scheme of the novel breakwater has high flexibility and high reliability. The floating breakwater restricts the movement under offshore conditions by the highly reliable anchoring device 13 to improve the wave-breaking effect.
The OWC device with high reliability and the floating breakwater are integrated, medium-long period waves are gathered in the cavity to generate resonance based on Helmholtz water wave resonance effect, the wave absorption performance of the floating breakwater is effectively improved by adopting a pore energy consumption structure, and a novel floating breakwater arrangement scheme which has strong wave absorption capacity, high reliability, low manufacturing cost and low construction difficulty and is suitable for the medium-long period waves under sea conditions is formed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A floating breakwater unit capable of eliminating medium and long period waves is characterized in that: comprises an OWC air chamber, a breakwater wave-facing wall (10) and a breakwater wave-backing wall (11); the breakwater wave-facing wall (10) and the breakwater back wave wall (11) are respectively arranged at the left side and the right side of the OWC air chamber, buoyancy chambers (9) are respectively arranged inside the breakwater wave-facing wall (10) and the breakwater back wave wall (11), and waterproof building materials are filled in the buoyancy chambers (9) to provide necessary buoyancy for the whole breakwater unit; a plurality of air chambers are separated from the inside of the OWC air chamber through an OWC air chamber partition wall (2); the bottom surface of each air chamber is provided with a wave-shaped penetration hole (6), the top surface of each air chamber is provided with an energy dissipation air hole (8), and an opening energy dissipation plate (7) is arranged in each air chamber;
waves enter the air chamber from the wave inlet holes (6), so that the waves are gathered in the air chamber, a water body in the air chamber performs large-amplitude lifting motion due to strong resonance, the water body acts on the perforated energy dissipation plate (7) arranged in the air chamber, the water body is converted into turbulent flow through the perforated energy dissipation plate (7) to cause obvious turbulent flow kinetic energy dissipation, and the mechanical energy of the water body is effectively reduced; the water column in the air chamber makes a heaving motion to cause air above the water body to be strongly extruded, so that the conversion from the kinetic energy of the water body to the internal energy of the air is realized, and the energy-contained air passes through the energy dissipation air hole (8) to realize the conversion from the internal energy of the air to the turbulent kinetic energy.
2. A floating breakwater unit that dampens long and medium wave waves according to claim 1, wherein: the width of the perforated energy dissipation plate (7) is smaller than that of a single air chamber, and a multi-row arrangement mode is adopted, so that the turbulent energy dissipation effect of a water body can be increased, the impact load is reduced to a certain extent, and the self viability of the breakwater is improved.
3. A floating breakwater unit that dampens long and medium wave waves according to claim 1, wherein: because the resonance frequency of the water body in the OWC air chamber is changed by the change of the size of the opening hole at the bottom end, the structural size of the wave inlet perforation (6) arranged on the bottom surface of the air chamber is determined according to the conditions of medium and long wave sea conditions in an actual sea area, and the proper resonance frequency of the air chamber is designed based on the hydrodynamic characteristics of the OWC, so that the water body in the OWC air chamber can generate a piston resonance phenomenon under the action of medium and long period waves, and then a large amount of wave energy is gathered in the air chamber, and the gathering of the wave energy is realized.
4. The floating breakwater capable of eliminating medium and long period waves based on the claim 1 is characterized in that: comprises a floating breakwater unit capable of eliminating medium-long period waves and an anchoring device (13); the floating breakwater units capable of eliminating the medium and long period waves are arranged in an array, breakwater wave-facing walls (10) of the floating breakwater units capable of eliminating the medium and long period waves are positioned on the same side, and the adjacent floating breakwater units capable of eliminating the medium and long period waves are connected through connecting devices (12); the anchoring devices (13) are arranged at the outer sides of the floating breakwater units which can eliminate medium-long period waves and are arranged at the two ends of the breakwater; the anchoring means (13) limit the movement of the breakwater in offshore conditions to improve the wave breaking effect.
5. The floating breakwater capable of dissipating long and medium wave waves of claim 4, wherein: the connecting device (12) is cast by prestressed concrete and is used for offsetting or reducing tensile stress generated by external load so as to ensure the viability of the floating breakwater in practical application.
6. The floating breakwater capable of dissipating long and medium wave waves of claim 4, wherein: the anchoring device (13) comprises a cable and an anchor block, the cable is connected to the bottom of the floating breakwater unit which can eliminate long-period waves at two ends of the floating breakwater, and the anchor block is anchored on the sea bottom to limit the forced movement of the breakwater under the action of the waves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111432036.3A CN114150615B (en) | 2021-11-29 | 2021-11-29 | Floating breakwater capable of eliminating medium-long period waves and unit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111432036.3A CN114150615B (en) | 2021-11-29 | 2021-11-29 | Floating breakwater capable of eliminating medium-long period waves and unit thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114150615A CN114150615A (en) | 2022-03-08 |
| CN114150615B true CN114150615B (en) | 2023-01-03 |
Family
ID=80784274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111432036.3A Active CN114150615B (en) | 2021-11-29 | 2021-11-29 | Floating breakwater capable of eliminating medium-long period waves and unit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114150615B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1492427A (en) * | 1975-03-27 | 1977-11-16 | Fukada H | Apparatus for generating electric power by wave energy and dissipating waves |
| JP3510372B2 (en) * | 1995-02-24 | 2004-03-29 | 株式会社フジタ | Breakwater type breakwater |
| CN104594286A (en) * | 2015-01-20 | 2015-05-06 | 长沙理工大学 | Floating breakwater doubling as wave power generation device |
| CN107701359B (en) * | 2017-09-15 | 2019-10-01 | 浙江大学 | A kind of floating breakwater and method for taking into account interior oscillating water column wave energy conversion function |
| CN108999145A (en) * | 2018-09-03 | 2018-12-14 | 哈尔滨工程大学 | A kind of comb type breakwater system for taking into account wave-energy power generation |
-
2021
- 2021-11-29 CN CN202111432036.3A patent/CN114150615B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114150615A (en) | 2022-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1802814B1 (en) | Breakwater wave energy converter | |
| CN104594286A (en) | Floating breakwater doubling as wave power generation device | |
| WO2019090804A1 (en) | Pendulum wave power generation device integrated into floating breakwater | |
| CN108397339A (en) | A kind of breakwater being applicable in Muddy Bottoms marine site and floating type oscillating water column power generator | |
| CN112874697B (en) | Ocean buoy and method for complementary power generation and energy supply by utilizing solar energy, wind energy and ocean current energy | |
| CN105971813A (en) | Wave energy power station structure integrating bulwark function | |
| WO2022161127A1 (en) | Ocean buoy for complementary power generation and supply by using solar, wind, and ocean current energy and method therefor | |
| CN114150616B (en) | Novel shore-based oscillating water column breakwater capable of eliminating medium-long period waves | |
| CN207377703U (en) | It is integrated in the pendulum wave energy power generation of floating breakwater | |
| CN114150615B (en) | Floating breakwater capable of eliminating medium-long period waves and unit thereof | |
| Shen et al. | Experimental study on wave attenuation performance of a new type of floating breakwater with twin pontoons and multi porous vertical plates | |
| CN110886272B (en) | Floating breakwater | |
| CN214648859U (en) | Ocean buoy for complementary power generation and energy supply by utilizing solar energy, wind energy and ocean current energy | |
| CN212582580U (en) | Floating plate type breakwater structure inclining to back wave side | |
| CN114934475A (en) | Novel floating breakwater structure with power generation function | |
| CN210531046U (en) | Floating breakwater-ocean energy device integrated system | |
| CN101736689B (en) | Wave weakening structure for bridge tower | |
| CN111893949A (en) | Floating plate type breakwater structure inclining to back wave side | |
| CN113373866A (en) | Floating type wave dissipation device with anti-rolling function | |
| CN112746926A (en) | Floating type double-air-chamber oscillating water column wave energy power generation device with external permeable structure | |
| CN104743077A (en) | Offshore floating temporary wharf design | |
| CN201292502Y (en) | Wave eliminating structure for pylon | |
| CN110541783A (en) | Floating breakwater-ocean energy device integrated system | |
| CN111335250A (en) | Pile-guiding type floating breakwater and wave energy conversion integrated system and working method thereof | |
| CN215629708U (en) | Novel adjustable floating breakwater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |