CN108839769B - Tail-tilting type wave energy acquisition device based on floating platform - Google Patents
Tail-tilting type wave energy acquisition device based on floating platform Download PDFInfo
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- CN108839769B CN108839769B CN201811038471.6A CN201811038471A CN108839769B CN 108839769 B CN108839769 B CN 108839769B CN 201811038471 A CN201811038471 A CN 201811038471A CN 108839769 B CN108839769 B CN 108839769B
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- 238000007667 floating Methods 0.000 title claims abstract description 154
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 37
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- 238000004873 anchoring Methods 0.000 description 2
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Classifications
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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
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
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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
- F03B13/16—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 using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
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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
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
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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 tail-tilting wave energy collection device based on a floating platform, which comprises a tail-tilting wave-absorbing floating body, wherein the tail-tilting wave-absorbing floating body is positioned between a pair of ship-shaped side appendages. The upper end of the tail-warping wave-absorbing floating body is connected with the transmission shaft, and the lower part of the tail-warping wave-absorbing floating body is half-floated in water. And two ends of the transmission shaft are respectively connected with the upper ends of the pair of ship-shaped side appendages through bearings and bearing supports. The wave lifting plate is arranged below the tail-warping wave absorbing floating body, and two sides of the wave lifting plate are respectively connected with the pair of ship-shaped side attachments. A front support frame and a rear support frame are respectively connected between the pair of boat-shaped side appendages. And a portal bracket is transversely arranged above the wane-type wave-absorbing floating body, and the bottoms of the portal bracket stand columns are respectively and fixedly connected to the tops of the pair of ship-type side attachment bodies. And a hydraulic cylinder is arranged between the upper cross beam of the door-shaped bracket and the planar back surface of the wane-type wave-absorbing floating body. The design of the device has higher cost performance and is beneficial to industrialization.
Description
Technical Field
The invention relates to an energy collection device in the field of wave energy power generation, in particular to a wave energy collection device based on a floating platform and taking a novel tail-tilting wave-absorbing floating body as a main body.
Background
Wave energy is the most abundant clean energy source in ocean energy, and the specific form of wave energy is huge forward thrust and upward buoyancy. With the desire and exploration of clean energy by human beings, the research on the wave energy utilization technology has also greatly progressed, and a great deal of research results are obtained, and are mainly applied to the field of power generation. Currently, wave energy harvesting devices that have been built or disclosed are largely divided into shore-based and floating types. The shore-based wave energy collection device is greatly influenced by coastal terrains and ocean tides, has higher construction and maintenance cost, and is not suitable for large-scale popularization. The floating wave energy collection device is not affected by coastal terrains, can be directly put into a target sea area after being manufactured on land, has strong working environment adaptability and lower construction and maintenance cost, and becomes the main research and development direction at present. The types of the floating type wave energy collecting device which are mature in development mainly comprise an air turbine type, a wave raft type, a wave pendulum type, a vibration float type, a nodding duck type and the like, the nodding duck type has the characteristic of simultaneously absorbing horizontal thrust and upward buoyancy of waves, the energy collecting efficiency is high, and the wave energy collecting modes of other types of devices mainly absorb unidirectional force of wave energy, so that the collecting efficiency is low. The nodding duck type has the defects that most of the mechanical structure is arranged in the wave absorber and below the horizontal plane, the design requirements on the strength and the tightness of the wave absorber structure are very strict, the nodding duck type wave absorber is difficult to adapt to the impact of rough waves, seawater leakage is easy to form, and damage is caused. Still because of the structural feature of nodding duck formula, it is very high to the initial energy collection efficiency of wave, but along with the wave advance to finally being stopped, the contained angle between the duck body face of facing the wave and the horizontal plane increases gradually, absorbs the wave and upwards reduces gradually to the effect face of buoyancy, makes the collection efficiency of device gradually reduce to make nodding duck formula collection device have the collection efficiency height to the low energy wave, and the shortcoming that the collection efficiency to the high energy wave reduces on the contrary. At present, a floating eagle type wave power generation device with the characteristic of a semi-submersible ship newly appears, and the Chinese invention patent: CN102661231a, this invention discloses a new type floating eagle wave power generation device with semi-submerged ship, which comprises a eagle head type wave absorbing body, a ship type underwater appendage and a door type supporting arm, the eagle head type wave absorbing body is fixedly connected with the upper end of the door type supporting arm, the lower end of the door type supporting arm is connected with a first hinge, the first hinge is fixedly connected with the ship type underwater appendage through a base, the door type supporting arm and the eagle head type wave absorbing body can rotate around the first hinge, the two ends of the ship type underwater appendage are installed with L type underwater appendage, the L type underwater appendage is connected with the ship type underwater appendage through a second hinge, the L type underwater appendage can rotate around the second hinge, a main floating body is installed right above the ship type underwater appendage and below the eagle head type wave absorbing body, the ship type underwater appendage is provided with a buoyancy cabin and a device cabin, the middle part of the two sides of the upper end of the ship type underwater appendage is provided with a buoyancy adjusting cabin. The wave-absorbing floating body is developed from a nodding duck type device, the wave-facing surface of the wave-absorbing floating body is improved, but in order to increase the collection efficiency of high-energy waves, a door-shaped supporting arm is added to the lower part of the wave-absorbing floating body, so that the floating rotation radius of the wave-absorbing floating body is increased, the whole device is kept stable in operation, the volume of an underwater appendage of the whole device is correspondingly increased, and the manufacturing cost of the whole device is higher.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the wave energy collecting device which is simple and stable in structure, easy to manufacture and convenient to put in and maintain. The design requirement of the device is as follows: 1. the whole set of device is based on floating type. 2. The energy conversion and transmission part of the device is separated from the seawater, so that the damage of the device caused by high waves is avoided, the corrosion of the seawater leakage to the internal device is avoided, and the capability of the device for resisting the wind waves is enhanced. 3. The wave-absorbing floating body of the device can fully absorb wave energy, and the wave energy absorption efficiency of the device is improved. 4. The proportion of the accessories and auxiliary facilities of the device in the whole device is reduced, namely, fewer accessories are used for supporting more wave-absorbing floating bodies to work, and the manufacturing cost is reduced. The unified solution of the problems can make the device more suitable for application and easy to popularize.
The technical scheme of the invention is to design a tail type wave energy collection device based on a floating platform, which is characterized by comprising a tail type wave absorbing floating body, wherein the tail type wave absorbing floating body is positioned between a pair of ship type side appendages, the upper end of the tail type wave absorbing floating body is connected with a transmission shaft, the lower part of the tail type wave absorbing floating body floats in water in a back half way, the two ends of the transmission shaft are respectively connected with the upper ends of the pair of ship type side appendages through bearings and bearing supports, a wave lifting plate is arranged below the tail type wave absorbing floating body, the two sides of the wave lifting plate are respectively connected with the pair of ship type side appendages, a front supporting frame and a rear supporting frame are respectively connected between the pair of ship type side appendages, and the tail type wave absorbing floating body is positioned between the front supporting frame and the rear supporting frame; the upper part of the tail-warping wave-absorbing floating body is transversely provided with a portal bracket, the bottoms of the portal bracket stand columns are respectively and fixedly connected to the tops of the pair of ship-shaped side appendages, the tail-warping wave-absorbing floating body is of a hollow shell structure, and the front side of the tail-warping wave-absorbing floating body is provided with an arc-shaped wave-facing surface.
In order to facilitate the wave energy absorption of the wave absorbing floating body, the wave absorbing floating body comprises a cambered front wave-facing surface, a planar back surface, a cambered bottom surface, fan-shaped two side surfaces and a cambered upper end surface. The cambered bottom surface and the cambered upper end surface are both arc surfaces taking the central line of the transmission shaft as the center of a circle. The front wave-facing surface of the arc shape is an arc surface which is recessed towards the inner side of the tail-warping wave-absorbing floating body. Under the condition that the seawater is static, the upper part of 1/3-1/2 of the front wave facing surface of the arc shape is arranged above the water surface. Preferably, under the condition that the seawater is static, the joint line of the lowest end of the planar back surface and the uppermost end of the cambered bottom surface is flush with the horizontal surface. Preferably, the front wave-facing surface of the arc shape is a cambered surface with gradually changed bending radius from top to bottom, under the condition that the seawater is static, a 45-degree included angle is formed between a tangent plane at the intersection point of the cambered surface and the horizontal plane, and in the process that the front wave-facing surface of the arc shape gradually rises upwards and backwards, all tangent planes formed at the intersection points of the front wave-facing surface of the arc shape form a 45-degree included angle with the horizontal plane until reaching the lowest end of the front wave-facing surface of the arc shape.
In order to facilitate the wave absorbing body to absorb wave energy, the further preferred technical scheme is that an upper section of the wave-rising plate wave-facing surface and a lower section of the wave-rising plate wave-facing surface are arranged on the wave-rising plate, the upper section of the wave-rising plate wave-facing surface is an arc surface taking the central line of a shaft as a circle center, the radius of the arc surface is larger than that of the arc surface of the arc-shaped bottom surface, the lower section of the wave-rising plate wave-facing surface is a tangent plane of the bottom of the upper section of the wave-rising plate wave-facing surface, the front end of the lower section of the wave-rising plate wave-facing surface is lower than the lower end of the upper section of the wave-rising plate wave-facing surface, and the height of the upper section of the wave-rising plate wave-facing surface is lower than the limit working height of the wave-facing surface of the tail wave absorbing body for backward floating.
In order to avoid transition swing of the wave-absorbing floating body with the tail, a further preferable technical scheme is that a gap is reserved between the upper end of the wave-facing surface of the wave-lifting plate and the limit working height of the lower end of the wave-facing surface of the wave-absorbing floating body with the tail, and the gap is a wave overflow port.
In order to minimize energy loss caused by waves passing through gaps at the lower part and two sides of the tail-warped wave-absorbing floating body, a further preferred technical scheme is that the gap between the cambered bottom surface of the tail-warped wave-absorbing floating body and the arc surface of the upper section of the wave-facing surface of the lower attaching plate is 1 mm-5 mm, and the gap between the fan-shaped two side surfaces of the tail-warped wave-absorbing floating body and the pair of ship-shaped side attachments is 1 mm-5 mm.
In order to further improve the utilization rate of wave energy, a hydraulic cylinder and a piston rod matched with the hydraulic cylinder are arranged between the upper cross beam of the door-shaped bracket and the plane-shaped back surface of the wane-type wave-absorbing floating body, the upper end of the hydraulic cylinder is hinged with the upper cross beam of the door-shaped bracket, and the lower end of the piston rod of the hydraulic cylinder is hinged with the plane-shaped back surface of the wane-type wave-absorbing floating body.
In order to further improve the utilization rate of wave energy, a further preferable technical scheme is that a hydraulic cylinder and a piston rod matched with the hydraulic cylinder are arranged between the lower part of the front wave-facing surface of the arc shape of the tail-type wave-absorbing floating body and the lower section of the wave-lifting plate, the lower end of the hydraulic cylinder is hinged with the front end of the lower section of the wave-lifting surface of the wave-lifting plate, and the upper end of the piston rod of the hydraulic cylinder is hinged with the lower part of the front wave-facing surface of the arc shape of the tail-type wave-absorbing floating body.
In order to improve the utilization efficiency of wave energy, a further preferred technical scheme is that the tail-warping wave-absorbing floating body is provided with a plurality of blocks, the tail-warping wave-absorbing floating body is transversely arranged between the pair of ship-shaped side appendages, a partition plate is arranged between the adjacent tail-warping wave-absorbing floating bodies, the lower end of the partition plate is connected with a wave lifting plate, the front end and the rear end of the partition plate are respectively connected with a front supporting frame and a rear supporting frame, and the upper end of the partition plate is arranged above the water surface.
In order to facilitate the adjustment of the height of the ship-shaped side attachment floating on the water surface, a further preferable technical scheme is that a buoyancy cabin is arranged at the lower part of the ship-shaped side attachment, a plurality of air chambers are distributed in the front-back direction of the buoyancy cabin, an air inlet pipe and an air outlet pipe are arranged at the upper part of the air chambers, and a water inlet pipe and a water outlet pipe are arranged at the lower part of the air chambers. Further preferable technical scheme is that a buoyancy cabin is arranged at the lower part of the wave raising plate, the buoyancy cabin is transversely arranged left and right and is semi-submerged in water, a plurality of air chambers are transversely distributed in the buoyancy cabin, an air inlet pipe and an air outlet pipe are arranged at the upper part of each air chamber, and a water inlet pipe and a water outlet pipe are arranged at the lower part of each air chamber.
In order to facilitate the conversion of wave energy into energy such as electric energy or pressure energy by means of a transmission mechanism of different configurations, a further preferred technical solution is that the transmission shaft is connected with an energy conversion device by means of a transmission gear, said energy conversion device being arranged in the upper part above the water surface of the ship-shaped side appendage.
The working principle of the invention is mainly that on a floating platform consisting of a pair of ship-shaped side attachment bodies, a front supporting frame, a rear supporting frame and a wave lifting plate, wave energy is converted into mechanical energy by pushing the lower part of the wave-raising wave-absorbing floating body by waves, and the mechanical energy is converted into hydraulic energy by the action of the wave-raising wave-absorbing floating body on a hydraulic cylinder, so that the hydraulic energy is utilized. The advantages and beneficial effects are that:
1. the design of the device is based on floating, so that the whole device can be manufactured on land, and the device is put into a target sea area to directly enter a working state after the manufacturing is finished, is not affected by tides and coastal terrains, and is cost-saving and easy to popularize compared with the coastal-based device.
2. The wave absorbing floating body of the device adopts a tail tilting design, namely the rear lower part of the wave absorbing body swings up and down around the transmission shaft at the front upper part, and the transmission shaft and the bearing support are above the horizontal plane, so that the transmission machinery is prevented from being corroded by seawater directly. Because the lower part of the tail-tilting wave-absorbing floating body floats in the water in a backward half way, when the wave energy exceeds the maximum rated value of the device, the tail-tilting wave-absorbing floating body floats upwards and backwards, and waves are flushed out backwards through the wave overflow port, so that the device is prevented from being damaged by the impact of rough waves. The tail-tilting wave-absorbing floating body adopts a sealed hollow bin body, so that the risk of damage to an internal device caused by seawater leakage caused by 'nodding ducks' is avoided.
3. The device adopts the design of a wave-absorbing floating body with a tail-tilting shape, the wave-facing surface of the design is opposite to the wave-facing surface of the wave-absorbing floating body with a head-nodding duck shape in the wave energy absorbing process, and the wave-facing surface of the wave-absorbing floating body with the head-nodding duck shape tends to be vertical under the pushing of waves, and the area for receiving the upward buoyancy of the waves is gradually reduced. The wave-facing surface of the 'tail-tilting' is horizontal under the pushing of the wave, and the area for receiving the upward buoyancy of the wave is gradually increased. The motion state of the wave-absorbing floating body with the tail type is more suitable for absorbing energy generated in the process of converting thrust into buoyancy by waves, so that the energy absorption efficiency of the wave-absorbing floating body with the tail type is higher than that of the wave-absorbing floating body with the head-abutting type.
4. Under the condition of the wave-facing surface with the same area, the working rotation radius of the 'tail-tilting' wave-absorbing floating body is smaller than that of the 'eagle' wave-absorbing floating body similar to the motion state of a 'nodical duck', namely, the 'tail-tilting' wave-absorbing floating body does not need to adopt a portal bracket adopted by the 'eagle' wave-absorbing floating body to increase the absorption efficiency of high-energy waves. In order to keep the whole device in a stable state in operation, under the same wave condition, the volume of an accessory required by the wave absorbing floating body with the tail type is smaller than that of the wave absorbing floating body with the eagle type.
5. In the design scheme of the device, the wave lifting plate is designed at the lower part of the tail-warping wave absorbing floating body, so that a space close to a closed space is formed between the front wave facing surface of the tail-warping wave absorbing floating body and side appendages (or partition plates) at two sides and the wave lifting plate wave facing surface in the direction of wave surging, and the device achieves high wave energy collecting efficiency.
6. The side appendages providing main buoyancy in the device are distributed on two sides of the wave absorber, a plurality of tail-warping wave absorbing floating bodies can be designed in the middle to collect wave energy at the same time, and enough buoyancy can be provided to support more wave absorbers to work only by adding corresponding supporting frames and buoyancy cabins on the device. The design of the device has higher cost performance and is beneficial to industrialization.
Drawings
FIG. 1 is a schematic diagram of a front view of a tail-tilting wave energy collection device based on a floating platform of the present invention;
FIG. 2 is a schematic side view of a tail-tilting wave energy collection device based on a floating platform of the present invention;
FIG. 3 is a schematic diagram of a layout of a second arrangement method of hydraulic cylinders and a wave overflow port in the tail-tilting wave energy collection device based on a floating platform;
FIG. 4 is a schematic diagram of the structure of the floating platform-based wave energy collection device for energy output by utilizing the cooperation of gears and the tail-tilting wave-absorbing floating body;
FIG. 5 is a schematic view of the structure of the heave plate and the separator in the tail-tilting wave energy collection device based on the floating platform of the invention;
fig. 6 is a side view of a tail-tilting wave-absorbing floating body in a tail-tilting wave energy harvesting apparatus based on a floating platform of the present invention.
In the figure: 1. tail-warping wave-absorbing floating body; 1.1, a cambered surface-shaped wave-facing surface; 1.2, a planar back surface; 1.3, a cambered surface bottom surface; 1.4, two sides of the fan shape; 1.5, an arc-shaped upper end surface; 2. a transmission shaft; 3. a ship-type side attachment body; 3.1, a ship-type side-attached equipment cabin; 3.2, a ship-type side-attached buoyancy cabin; 4. a bearing support; 5. a wave lifting plate; 5.1, the upper section of the wave-facing surface of the wave-raising plate; 5.2, the lower section of the wave-facing surface of the wave-raising plate; 6. a front support frame; 7. a rear support frame; 8. a portal frame; 9. a wave overflow port; 10. a hydraulic cylinder; 11. a piston rod; 12. a partition plate; 13. a buoyancy chamber; 14. a transmission gear; 15. an anchoring system.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1-5, the invention relates to a tail-tilting type wave energy collection device based on a floating platform, wherein the wave-facing surface of the device is the front side. The device comprises a tail-type wave-absorbing floating body 1, wherein the tail-type wave-absorbing floating body 1 is positioned between a pair of ship-type side attachment bodies 3, a transmission shaft 2 horizontally transversely penetrates through the upper parts of the tail-type wave-absorbing floating bodies 1 and is fixedly connected with the tail-type wave-absorbing floating bodies 1 into a whole through a flat key or a spline, the tail-type wave-absorbing floating bodies are positioned above the water surface, two ends of the transmission shaft 2 are respectively connected with the front parts of the upper ends of the ship-type side attachment bodies 3 on two sides through bearings and bearing supports 4, and the rear lower parts of the tail-type wave-absorbing floating bodies 1 can swing in an arc shape by taking the central line of the transmission shaft 2 as the center of a circle. The wave lifting plate 5 is arranged below the tail-warping wave absorbing floating body 1, two sides of the wave lifting plate 5 are respectively connected with the ship-shaped side auxiliary bodies 3, a front supporting frame 6 and a rear supporting frame 7 are respectively and fixedly connected with the front part and the rear part between the pair of ship-shaped side auxiliary bodies 3, a door-shaped support 8 is also connected between the upper parts of the pair of ship-shaped side auxiliary bodies 3, and the lower ends of the upright posts of the door-shaped support 8 are respectively and fixedly connected with the tops of the pair of ship-shaped side auxiliary bodies 3. A hydraulic cylinder 10 and a piston rod 11 matched with the hydraulic cylinder 10 are arranged between the upper cross beam of the door-shaped bracket 8 and the planar back surface of the wane-type wave-absorbing floating body 1. The upper end of the hydraulic cylinder 10 is hinged to a beam of the portal bracket 8, the lower end of the piston rod 11 is hinged to the planar back surface 1.2 of the tail-tilting wave-absorbing floating body 1, and the tail-tilting wave-absorbing floating body 1 is of a hollow shell structure.
In order to facilitate the wave energy absorption of the wave absorbing floating body with the tail type, the wave absorbing floating body with the tail type comprises a cambered front upstream face 1.1, a planar back face 1.2, a cambered bottom face 1.3, fan-shaped two side faces 1.4 and a cambered upper face 1.5, wherein 1/3-1/2 upper parts of the cambered front upstream face 1.1 are arranged above a water surface and have a bending radius larger than a bending radius below the water surface, the cambered bottom face 1.3 and the cambered upper face 1.5 are arc faces taking the central line of a transmission shaft 2 as a circle center, and the planar back face 1.2 is positioned above the water surface.
Preferably, the front wave-facing surface 1.1 of the arc shape is a cambered surface which is concave from top to bottom and the middle part of the cambered surface is towards the inner side of the tail-warping wave-absorbing floating body 1, and the bending radius of the cambered surface is gradually changed, under the condition that seawater is static, a 45-degree included angle is formed between the tangent plane at the intersection point of the cambered surface and the horizontal plane, and in the process that the front wave-facing surface of the arc shape gradually rises upwards and backwards, all the tangent planes formed at the intersection points of the front wave-facing surface of the arc shape form 45-degree included angles with the horizontal plane until reaching the lowest end of the front wave-facing surface of the arc shape.
In order to facilitate the wave absorption of the wave energy by the wave absorbing body, the wave lifting plate 5 is divided into an upper section 5.1 of the wave lifting plate facing surface and a lower section 5.2 of the wave lifting plate facing surface according to the line shape of the side view of the wave facing surface, the upper section 5.1 of the wave lifting plate facing surface is an arc surface taking the central line of the transmission shaft 2 as the center, the arc surface is lifted in an arc shape by the rear upper part of the lower part of the wave absorbing body 1, the radius of the arc surface is larger than the radius of the arc surface 1.3, the lower section 5.2 of the wave lifting plate facing surface is a tangent plane of the bottom of the upper section 5.1 of the wave lifting plate facing surface, the tangent plane gradually rises to the lower part of the wave absorbing body 1 from the front lower part of the inner side of the ship-shaped side accessory, and the arc surface 5.1 and the lower section 5.2 of the wave facing surface are tangent to each other at the lower side of the wave absorbing body 1.
In order to avoid transitional swing of the wave-raising wave-absorbing floating body 1, a further preferred embodiment of the invention is that the height of the upper end of the upper section 5.1 of the wave-raising plate wave-raising surface is lower than the limit working height of the lower end of the wave-raising surface 1.1 of the wave-raising wave-absorbing floating body floating backwards, and the gap between the upper end of the upper section 5.1 of the wave-raising surface of the lower attaching plate wave-raising surface and the limit working height of the lower end of the wave-raising surface 1.1 of the wave-raising wave-absorbing floating body floating backwards is a wave overflow port 9.
In order to minimize energy loss caused by the waves passing through the gap between the wave lifting plate 5 and the tail-warping type wave-absorbing floating body 1, a further preferred embodiment of the invention is that the gap between the cambered bottom surface 1.3 of the tail-warping type wave-absorbing floating body 1 and the arc surface of the upper section 5.1 of the wave-lifting plate wave-facing surface is 1 mm-5 mm, and the gap between the two side surfaces of the fan shape of the tail-warping type wave-absorbing floating body and the pair of ship-shaped side appendages is 1 mm-5 mm.
In order to facilitate the adjustment of the height of the whole device floating on the water surface and maintain stability, a further preferred embodiment of the present invention is that the floating bodies of the pair of ship-shaped side appendages 3 are respectively arranged in the forward and backward directions and are distributed on two sides of the tail-warping wave-absorbing floating body 1 side by side. The pair of ship-shaped side auxiliary bodies 3 are respectively divided into an upper part and a lower part, wherein the upper part is a ship-shaped side auxiliary body equipment cabin 3.1, and the lower part is a ship-shaped side auxiliary body buoyancy cabin 3.2. The buoyancy cabin 3.2 is semi-submerged in seawater, the front end and the rear end of the buoyancy cabin are respectively protruded out of the front end and the rear end of the lower side of the equipment cabin 3.1, a plurality of air chambers are distributed in the front-rear direction in the buoyancy cabin 3.2, an air inlet pipe and an air outlet pipe are arranged at the upper part of each air chamber, and a water inlet pipe and a water outlet pipe are arranged at the lower part of each air chamber.
In order to facilitate the conversion of wave energy into energy such as electric energy or pressure energy by means of a transmission mechanism of a different construction, a further preferred embodiment of the invention is that the transmission shaft 2 is connected via a transmission gear 14 to an energy conversion device which is arranged above the water surface of the ship-shaped side appendage 3.
The front view of the tail-tilting wave-absorbing floating body 1 is square, the side view is small at the front upper part and large at the rear lower part, the shape of the tail-tilting wave-absorbing floating body is similar to that of an eagle head, and the whole structure is a hollow closed cabin. The rear lower part of the tail-tilting wave-absorbing floating body 1 is semi-floated in water and swings in an arc shape by taking the central line of the transmission shaft 2 as the center under the pushing of waves, and the tail-tilting wave-absorbing floating body mainly acts on absorbing mechanical energy generated by wave surging.
The floating bodies of the pair of ship-shaped side appendages 3, in addition to providing a part of buoyancy, the equipment room 3.1 mainly provides arrangement space for the energy conversion system, the control system and other auxiliary equipment of the device, and the upper half of the equipment room floats above the water level. The buoyancy chamber 3.2 is primarily intended to provide buoyancy to the overall device and to enable adjustment. The length of the front and rear protruding parts of the buoyancy chamber 3.2 is required to meet the condition that the whole device is kept stable under the surge of waves, so that the whole device is prevented from shaking longitudinally.
The height of the top of the wave facing surface 1.1 of the tail-warping wave absorbing floating body 1, which is floating out of the water surface, is not lower than the height of waves in the maximum rated working state of the device.
The main body front support frame 6 and the main body rear support frame 7 are composed of a plurality of groups of brackets, and are mainly used for connecting a pair of ship-shaped side attachment bodies 3, so that the whole device forms a firm stable structure and provides support points for auxiliary devices. The arrangement of the main body front support frame 6 and the main body rear support frame 7 must not affect the normal operation of the wave-absorbing rear floating body 1.
The main function of the portal frame 8 is to provide an upper fulcrum for the hydraulic cylinder 10, and the hydraulic cylinder 10 is used for converting the mechanical energy of wave surge into hydraulic energy through the up-and-down swing of the rear lower part of the tail-warping wave absorber 1. Because the rear lower part of the wane-type wave-absorbing floating body 1 is semi-floating on the water surface and has certain mass, the efficiency of the bidirectional hydraulic cylinder is higher.
The cambered surface shape design of the wave-facing surface 1.1 at the front side of the tail-warping wave-absorbing floating body 1 is an arc-shaped cambered surface with the middle part recessed towards the inside of the tail-warping wave-absorbing floating body 1 from top to bottom. When the wave pushes the tail-tilting wave-absorbing floating body 1 in the rated working state, the angle of the acting force of the wave on the tail-tilting wave-absorbing floating body 1 is kept in an optimal state in the process that the tail-tilting wave-absorbing floating body 1 swings upwards and backwards.
The cambered surface-shaped bottom surface 1.3 at the lower part of the tail-warping wave absorber 1 is an arc surface concentric with the transmission shaft 2. The optimal height of the uppermost end of the cambered bottom surface 1.3 is flush with the water surface under static state. When the curved surface enables the tail-warping wave absorber 1 to swing around the transmission shaft 2, the wave-making resistance of the rear seawater to the swing of the tail-warping wave absorber 1 is not generated, and the absorption efficiency of the device to wave energy can be improved.
The heave plate 5 is designed to be strong enough to withstand the impact of waves. The front lower part of the wave lifting plate 5 is firmly connected with the adjacent main body front support frame 6, and the rear lower part is firmly connected with the main body rear support frame 7 through a connecting rod. The clearance between the two sides of the tail-warping wave-absorbing floating body 1 and the inner side of the ship-shaped side attachment body 3 and the clearance between the rear lower part of the tail-warping wave-absorbing floating body 1 and the main body lower attachment plate 5 are required to be minimum under the condition that friction is not generated between the two sides of the tail-warping wave-absorbing floating body, namely, 1 mm-5 mm is required to be minimum under the condition that friction is not generated between the two sides of the tail-warping wave-absorbing floating body and the main body lower attachment plate 5, and the clearance is used for reducing energy loss caused by waves passing through the clearance.
In order to improve the cost performance of the whole device, the embodiment is also provided with a plurality of tail-type wave-absorbing floats 1 between a pair of ship-type side appendages 3, and the tail-type wave-absorbing floats 1 are separated by a partition plate 12. The baffle 12 is of an upright plate-shaped structure, is arranged forwards and backwards in a forward direction, the front end and the rear end of the baffle 12 are respectively and fixedly connected to the main body front supporting frame 6 and the main body rear supporting frame 7, the left side and the right side of the baffle 12 are perpendicular to the wave raising plate 5, and the bottom of the baffle 12 is fixedly connected with the wave raising plate 5. The upper part of the partition plate 12 is above the water surface, the upper plane is parallel to the water surface, and the left and right width of the upper plane is required to meet the requirements of installing the bearing support 4 and the portal support 8. The bottom of the upright post of the portal bracket 8 is arranged at the top of the partition plate 12 and forms a stable structure, and the front upper part of the wane-type wave absorber 1 is arranged at the top of the partition plate 12 through the transmission shaft 2 and the bearings and the bearing supports 4 at the two sides. The baffle 12 is used for providing a fulcrum for each tail-warping wave absorber 1 and related components, and separating each tail-warping wave absorber 1, so that wave energy cannot diffuse to two sides, and interference waves are avoided. The partition 12 is designed as a hollow closed cabin which provides some buoyancy to the overall device.
The buoyancy chamber 13 can be added to the lower part of the wave lifting plate 5. The buoyancy cabin 13 is transversely arranged left and right and is a hollow closed cabin body, and two sides of the buoyancy cabin are respectively connected with a pair of ship-shaped side auxiliary bodies 3. The lower part and the rear part of the buoyancy chamber 13 are connected and fixed with the main body front support frame 6 and the main body rear support frame 7 through connecting rods. The buoyancy chamber 13 can be divided into a plurality of air chambers, and the upper part of the air chamber is provided with an air inlet pipe and exhaust airPipeThe lower part is provided with a water inlet pipe and a water outlet pipe for adjusting the buoyancy. The buoyancy chamber 13 may be connected to the heave plate 5 and designed as one piece. The function is as follows: providing partial buoyancy to the whole set of apparatus.
An anchor system 15 for connecting the pair of ship-shaped appendages 3 to the sea floor and for fixing the whole device to the sea surface with the front side facing the wave. The anchoring system may be of prior art and is not described here.
The hydraulic energy storage, conversion and control system is arranged in the pair of ship-shaped side appendages 3 and is connected with the hydraulic cylinder 10 through a hydraulic pipeline, so that the hydraulic energy collected by the hydraulic cylinder 10 is utilized. The hydraulic energy storage, conversion and control system and various utilization modes related to hydraulic energy can be implemented by those skilled in the art using the prior art, and are not described herein.
The arrangement of the hydraulic cylinders 10 in the present set is not the only way, such as: the hydraulic cylinder can be arranged at the front side of the wave-absorbing body 1 with the tilted tail, one end of the hydraulic cylinder 10 is hinged with the front end of the main body front supporting frame 6 or the front end of the wave-facing surface lower section 5.2 of the wave-lifting plate, and the top end of the piston rod 11 at the other end is hinged with the front lower side of the wave-facing surface 1.1 of the wave-absorbing body 1 with the tilted tail, so that the hydraulic cylinder 10 can absorb mechanical energy generated by the swing of the wave-absorbing body 1 with the tilted tail for output and utilization. The method of using the hydraulic cylinder 10 as the wave absorbing floating body to absorb wave energy is not the only method, such as: the transmission method of the transmission gear 14 can be adopted, the large gear which takes the center of the transmission shaft 2 as the center of the circle is fixedly arranged on the transmission shaft 2, and the mechanical energy generated by the swing of the wave absorber is output and utilized through the speed change gear. Because the design scheme of the wave energy meter uses the tail-tilting wave absorber 1 as a main body, any energy transmission mode which uses the tail-tilting wave absorber as a wave energy collecting main body is within the protection scope of the wave energy meter.
The foregoing is merely a preferred embodiment of the present invention, and the materials used for the main structure are preferably steel, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (7)
1. The device is characterized by comprising a tail type wave energy collection device based on a floating platform, wherein the tail type wave energy collection device comprises a tail type wave absorption floating body, the tail type wave absorption floating body is positioned between a pair of ship-shaped side appendages, the upper end of the tail type wave absorption floating body is connected with a transmission shaft, the lower part of the tail type wave absorption floating body is floated in water in a back half mode, two ends of the transmission shaft are respectively connected with the upper ends of the pair of ship-shaped side appendages through bearings and bearing supports, a wave lifting plate is arranged below the tail type wave absorption floating body, two sides of the wave lifting plate are respectively connected with the pair of ship-shaped side appendages, a front supporting frame and a rear supporting frame are respectively connected between the pair of ship-shaped side appendages, a door-shaped bracket is transversely arranged above the tail type wave absorption floating body, the bottoms of door-shaped bracket stand columns are respectively and fixedly connected to the tops of the pair of ship-shaped side appendages, and the tail type wave absorption is of a hollow shell structure;
the raising tail type wave absorbing floating body comprises a cambered front wave-facing surface, a planar back surface, a cambered bottom surface, fan-shaped two side surfaces and a cambered upper end surface, wherein the cambered front wave-facing surface is a cambered surface recessed towards the inner side of the raising tail type wave absorbing floating body, 1/3-1/2 upper part of the cambered front wave-facing surface is arranged above the water surface, the bending radius of the cambered front wave-facing surface is larger than the bending radius below the water surface, the cambered bottom surface and the cambered upper end surface are both arc surfaces taking the central line of a transmission shaft as the center of a circle, and the planar back surface is positioned above the water surface;
the upper section of the wave-rising plate wave-rising surface and the lower section of the wave-rising plate wave-rising surface are arranged on the wave-rising plate, the upper section of the wave-rising plate wave-rising surface is an arc surface taking the central line of the transmission shaft as the center of a circle, the radius of the arc surface is larger than that of the arc surface bottom surface of the tail-warping wave-absorbing floating body, the lower section of the wave-rising plate wave-rising surface is a tangent plane of the bottom of the upper section of the wave-rising plate wave-rising surface, and the height of the upper section of the wave-rising plate wave-rising surface is lower than the limit working height of the lower end of the wave-rising surface of the tail-warping wave-absorbing floating body;
the lower part of the ship-shaped side attachment body is provided with a buoyancy cabin, a plurality of air chambers are distributed in the front-back direction of the buoyancy cabin, the upper part of each air chamber is provided with an air inlet pipe and an air outlet pipe, and the lower part of each air chamber is provided with a water inlet pipe and a water outlet pipe;
the transmission shaft is connected with the energy conversion device through a transmission gear, and the energy conversion device is arranged at the upper part above the water surface of the ship-shaped side attachment body.
2. The floating platform-based tail-tilting wave energy collection device according to claim 1, wherein a gap is reserved between the upper end of the upper section of the wave-facing surface of the wave lifting plate and the limit working height of the lower end of the wave-facing surface of the tail-tilting wave absorbing floating body, and the gap is a wave overflow port.
3. The floating platform-based tail-tilting wave energy collection device according to claim 2, wherein a gap between the cambered bottom surface of the tail-tilting wave-absorbing floating body and the arc surface of the upper section of the wave-facing surface of the wave-lifting plate is 1 mm-5 mm, and a gap between the two side surfaces of the fan shape of the tail-tilting wave-absorbing floating body and the pair of ship-shaped side attachments is 1 mm-5 mm.
4. The floating platform-based tail-tilting wave energy collection device according to claim 1, wherein a hydraulic cylinder and a piston rod matched with the hydraulic cylinder are arranged between the upper cross beam of the door-shaped bracket and the planar back surface of the tail-tilting wave absorbing floating body.
5. The floating platform-based tail-tilting wave energy collection device according to claim 1, wherein a hydraulic cylinder and a piston rod matched with the hydraulic cylinder are arranged between the front wave-facing surface of the arc shape of the tail-tilting wave-absorbing floating body and the bottom of the wave-lifting plate.
6. The floating platform-based tail-warping type wave energy collection device according to any one of claims 1 to 5, wherein a plurality of tail-warping type wave absorbing floating bodies are arranged transversely and parallelly between the pair of ship-shaped side accessories, a partition plate is arranged between the adjacent tail-warping type wave absorbing floating bodies, the lower end of the partition plate is connected with a wave lifting plate, the front end and the rear end of the partition plate are respectively connected with a front supporting frame and a rear supporting frame, and the upper end of the partition plate is arranged above the water surface.
7. The floating platform-based tail-tilting wave energy collection device according to claim 6, wherein a buoyancy cabin is arranged at the lower part of the wave lifting plate, the buoyancy cabin is transversely arranged left and right and is semi-submerged in water, a plurality of air chambers are transversely distributed in the buoyancy cabin, an air inlet pipe and an air outlet pipe are arranged at the upper part of each air chamber, and a water inlet pipe and a water outlet pipe are arranged at the lower part of each air chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811038471.6A CN108839769B (en) | 2018-09-06 | 2018-09-06 | Tail-tilting type wave energy acquisition device based on floating platform |
| PCT/CN2019/103187 WO2020048367A1 (en) | 2018-09-06 | 2019-08-29 | Warped-tail wave energy collecting device based on floating platform |
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| CN201811038471.6A CN108839769B (en) | 2018-09-06 | 2018-09-06 | Tail-tilting type wave energy acquisition device based on floating platform |
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| CN108839769B (en) * | 2018-09-06 | 2023-12-26 | 北京龙波之光新能源科技有限公司 | Tail-tilting type wave energy acquisition device based on floating platform |
| CN109515639B (en) * | 2019-01-08 | 2020-12-11 | 杭州煜贤网络科技有限公司 | Floating body for semi-immersion type ocean wind power generation equipment |
| CN113344275B (en) * | 2021-06-15 | 2022-10-14 | 上海交通大学 | Floating platform wave climbing online forecasting method based on LSTM model |
| CN114457773B (en) * | 2022-01-21 | 2023-11-14 | 西南石油大学 | Novel jacket platform suitable for offshore oil and gas exploitation |
| CN115523075A (en) * | 2022-10-12 | 2022-12-27 | 中国科学院广州能源研究所 | Blade type zero-mass inertia efficient power generation wave energy device |
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| WO2020048367A1 (en) | 2020-03-12 |
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