CN109356777B - Wall-mounted vertical oscillation float type wave power generation device - Google Patents
Wall-mounted vertical oscillation float type wave power generation device Download PDFInfo
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- CN109356777B CN109356777B CN201811310198.8A CN201811310198A CN109356777B CN 109356777 B CN109356777 B CN 109356777B CN 201811310198 A CN201811310198 A CN 201811310198A CN 109356777 B CN109356777 B CN 109356777B
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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"
- F03B13/18—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
- F03B13/1845—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom slides relative to the rem
- F03B13/1875—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" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom slides relative to the rem and the wom is the piston or the cylinder in a pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
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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
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- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention belongs to the field of wave energy power generation, and particularly relates to a wall-mounted heaving float type wave energy power generation device. Mainly comprises an energy obtaining mechanism, a supporting structure, a power output system and the like. The energy obtaining mechanism consists of a floater, a sliding mechanism and a connecting piece, is a moving part of the device and is used for capturing wave energy; the support structure is a frame structure, consists of a support beam, a guide mechanism and a damping spring, is used for supporting the main components of the device and restraining and guiding the movement of the energy obtaining mechanism; the power output system consists of a power mechanism and an energy conversion mechanism and is used for converting wave energy captured by the floater into pressure energy for energy storage, driving the generator to generate electricity under set conditions and converting the wave energy into electric energy. The device can be arranged on the wave-facing wall surfaces of a floating platform, a breakwater and a coast, has high energy conversion efficiency, good starting performance, strong environment adaptability, simple structure, convenient construction and offshore installation and maintenance and low production and construction cost.
Description
Technical Field
The invention belongs to the field of wave energy power generation, and particularly relates to a wall-mounted heaving float type wave energy power generation device.
Background
Ocean wave energy is a clean and pollution-free green renewable new energy source and has the advantages of large reserves, wide distribution and the like. The development and utilization of ocean wave energy have important meanings for relieving energy shortage, reducing environmental pollution, developing coastal and island economy, consolidating sea defense and the like.
The wave energy power generation device is a main form for utilizing wave energy, and mainly comprises an oscillating floater type, an oscillating water column type and a wave crossing type according to different energy obtaining modes of the wave energy power generation device. Compared with the oscillating water column type and wave energy power generation devices, the oscillating float type wave energy power generation device has the advantages of simple structure, convenience in installation and maintenance, higher energy conversion efficiency, suitability for small wave conditions and the like. The oscillating float type wave energy power generation device mainly comprises a fixed type wave energy power generation device and a floating type wave energy power generation device according to different positioning modes, wherein the two types of devices are respectively used for installing a float, a transmission mechanism and a power generation system on a fixed type carrier and a floating type carrier, the fixed type device is mainly suitable for offshore areas, and the floating type device is suitable for deep and distant sea areas. The construction cost of the carrier structure of the oscillating float type wave energy power generation device is very expensive, and the carrier structure occupies a large proportion in the cost of the whole device, so that the cost of the wave energy power generation device is very high, and the economic benefit is low; on the other hand, the independent wave energy device carrier is easy to damage under extreme sea conditions, and the safety is low. The two reasons limit the industrial application of the wave energy power generation device. Therefore, the invention discloses a wall-mounted heaving float type wave energy power generation device which is an oscillating float type device,
through search and discovery, an invention patent document with publication number CN105888952A discloses an oscillating float type ocean wave energy power generation device. The wave energy conversion device comprises a wave energy absorption device, a supporting device, a conversion device and an output device. The wave energy absorption device comprises a floating frame and a floater; the supporting device comprises an upper bracket and a lower bracket which are parallel to each other and coaxial, and the two brackets are sleeved on the ocean upright post; the conversion device comprises a main transmission chain wheel and an auxiliary transmission chain wheel which are respectively arranged on a floating frame of the wave energy absorption device, an upper transmission chain wheel arranged on an upper support, a lower transmission chain wheel arranged on a lower support, a main shaft connected with a generator rotating shaft of the output device and an energy storage flywheel connected between the main shafts of the upper transmission chain wheels; the output device comprises a generator and a coupling. The invention provides a wall-mounted heaving float type wave energy power generation device which can be mounted on a floating platform, a breakwater and a wave-facing wall surface of a coast, and is high in energy conversion efficiency, good in starting performance, strong in environment adaptability, simple in structure, convenient to build, mount and maintain on the sea, and low in production and construction cost. The invention relates to a wall-mounted vertical oscillation float type wave energy power generation device and an oscillating float type modified wave energy power generation device disclosed in the invention patent document with publication number CN105888952A, which have the following differences:
1. the floats have different shapes and structures. The float disclosed in the invention patent publication No. CN105888952A is in the shape of a circular cylindrical float. The floater adopted by the invention is composed of a floater shell and supporting bone materials, the water part of the floater shell facing the wave surface is a straight wall surface, the underwater part of the floater shell is a streamline curved surface, and the side surface and the back surface of the floater shell are both straight wall surfaces. The floater adopting the structure form disclosed by the invention has excellent hydrodynamic performance and high energy capture efficiency, and is suitable for being installed on the wave-facing surface of the existing marine structure.
2. The support of the device is different. The float supporting mode disclosed in the invention patent document with publication number CN105888952A is to adopt an upper bracket and a lower bracket which are parallel to each other and coaxial, and both brackets are sleeved on an ocean upright post. The supporting structure adopted by the invention is a frame structure and consists of a supporting beam, a guiding mechanism and a damping spring, wherein the supporting beam comprises an upper beam and a lower beam which are respectively and symmetrically arranged at the upper end and the lower end of the supporting structure, the upper beam and the lower beam respectively comprise a beam body, two supporting seats, two mounting surfaces and the like, and the mounting surfaces and a carrier can be connected through bolts to fix the device on the side wall of the carrier. The support mode of the patent of the invention is convenient for control the planeness and the parallelism of the vertical shaft, improves the reliability and is convenient for installation and maintenance.
3. The carrier disclosed in the invention patent document with publication number CN105888952A is a marine column, which limits the carrier form of the device, while the wave energy device in the invention patent does not limit the structural form of the carrier, and can use the existing marine structure as the carrier without additionally building a special carrier, thereby reducing the construction cost of the device.
4. The conversion device disclosed in patent document CN105888952A includes a main transmission sprocket and an auxiliary transmission sprocket respectively mounted on a floating frame of the wave energy absorbing device, an upper transmission sprocket mounted on an upper bracket, a lower transmission sprocket mounted on a lower bracket, a main shaft connected to a generator rotating shaft of the output device, and an energy storage flywheel connected between the main shafts of the upper transmission sprockets. The hydraulic system is adopted for energy conversion, and the hydraulic system has the advantages of good stability and high reliability.
5. A part of the conversion device disclosed in the invention patent publication No. CN105888952A is below the water surface. The wave energy device disclosed by the invention is characterized in that except that the components such as the floater and the supporting structure are positioned below the water surface, the devices such as the power output system are all positioned above the water surface, so that the technical difficulty of water tightness is reduced
The wall-mounted heaving float type wave energy power generation device related to the invention patent is obviously different from the oscillating float type ocean wave energy power generation device disclosed in the invention patent document with the publication number of CN105888952A in terms of float structure form, supporting mode, energy conversion mode and the like, and compared with the wave energy power generation device disclosed in the invention patent document with the publication number of CN105888952A, the wall-mounted heaving float type wave energy power generation device related to the invention patent achieves obvious effects in the aspects of improving energy conversion efficiency, maintainability and reliability, reducing installation difficulty, watertight technical difficulty and operation and maintenance cost, so that the wall-mounted heaving float type wave energy power generation device related to the invention patent is completely different from the wave energy power generation device disclosed in the invention patent document with the publication number of CN 105888952A.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-performance wave energy power generation device which has good starting performance, high conversion efficiency, good maintainability, economy and environmental adaptability, is easy to produce, manufacture, transport, install, maintain, overhaul and operate and manage, does not need a complex watertight process and is suitable for wave energy conversion.
The invention adopts the following technical scheme:
a wall hanging vertical oscillation float type wave energy power generation device comprises an energy obtaining mechanism 1, a supporting structure 2 and a power output system 3, wherein the supporting structure 2 comprises an upper beam 211, a lower beam 212 and a vertical shaft 221; the power output system 3 comprises a work applying mechanism 31 and an energy conversion mechanism 32, wherein the work applying mechanism 31 comprises a hydraulic oil cylinder 311, an oil cylinder seat and an oil pipe 314; the vertical shafts comprise a left vertical shaft and a right vertical shaft, the upper ends of the vertical shafts are fixedly connected with the upper beam, the lower ends of the vertical shafts are fixedly connected with the lower beam, and the two vertical shafts are connected with the upper beam and the lower beam and then are in a square shape; the energy obtaining mechanism is connected with the vertical shafts through bolts and fixed between the two vertical shafts, the hydraulic oil cylinder penetrates through the middle of the upper beam and fixes the hydraulic oil cylinder through the oil cylinder seat, the oil pipe is connected with the hydraulic oil cylinder and the energy conversion mechanism, and the energy conversion mechanism is fixed on the carrier.
The energy obtaining mechanism consists of a floater 11, a bearing sleeve 121, a water lubrication bearing 122, a connecting plate 131 and a bearing connecting plate 132, wherein four connecting plates are welded on two sides of the floater, and two connecting plates are arranged on each side and are parallel to each other; the connecting plate extends into the floater, and the floater connecting plate is connected with the bearing connecting plate through a bolt; every two water-lubricated bearings are respectively fixed at the upper part and the lower part in the bearing sleeve; the distance between the two connecting plates fixedly connected with the floater is the same as that between the two connecting plates fixedly connected with the bearing sleeve, and the two connecting plates are connected through a bolt; the upper beam and the lower beam jointly form a support beam, wherein the upper beam consists of a first beam body 2111, a first support seat 2112 and a first mounting surface 2113, the lower beam consists of a second beam body 2111, a second support seat 2112 and a second mounting surface 2113, the vertical shafts comprise a left vertical shaft and a right vertical shaft, the inner layer of each vertical shaft is a seamless steel pipe, the outer layer of each vertical shaft is a stainless steel sleeve, two ends of each vertical shaft are stepped shaft necks 222, and the diameters of the two ends are smaller; two ends of the upper beam and the lower beam are respectively provided with a round hole, the inner diameter of each round hole is the same as the diameter of the journal, and the journal extends into the round holes and is clamped at the junction of the journal and the vertical shaft main body; the inner diameter of the water lubricated bearing is the same as the outer diameter of the vertical shaft, and the total number of the water lubricated bearings is four; the bearing sleeves are cylindrical stainless steel sleeves coated with anticorrosive paint, and the two bearing sleeves are formed; each two bearings are fixed on the upper part and the lower part inside one bearing sleeve, each vertical shaft respectively passes through one bearing sleeve, a shaft neck at the upper end of each vertical shaft is embedded into a round hole of an upper beam, a shaft neck at the lower end of each vertical shaft is embedded into a round hole of a lower beam, the upper beam, the lower beam and the two vertical shafts form a frame structure, two parallel bearing connecting plates are welded on two sides of each bearing sleeve, and the bearing connecting plates are tangent to the arc surfaces of the bearing sleeves; one side of the bearing sleeve welded bearing connecting plate points to the inner side of the frame structure, and four damping springs 23 are rubber springs and are respectively fixed at the upper end and the lower end of the left vertical shaft and the right vertical shaft; the first beam body of the upper beam is of a van-type structure, the first supporting seat of the upper beam supports the vertical shaft and is fixedly connected to two ends of the first beam body, and the middle part of the upper beam is a cylindrical hole; the middle part of the first beam body of the upper beam is only provided with an oval hole, and the hydraulic oil cylinder penetrates through the oval hole; the first mounting surface of the upper beam is a square panel, the square panel is fixedly connected to the back of the first supporting seat and extends out of a certain width around the first supporting seat, the extending part is a circle of bolt holes, and the device is suspended on the side wall of the carrier through bolts; the lower beam and the upper beam are symmetrically arranged and have the same structure.
The energy conversion mechanism consists of a hydraulic oil tank 321, an energy accumulator 322, a hydraulic motor 323 and a permanent magnet generator 324; the hydraulic oil cylinder is a stainless steel oil cylinder sprayed with anticorrosive materials, one end of an oil cylinder rod is fixed on a lower oil cylinder seat at the top of a floater through a pin shaft, the hydraulic oil cylinder penetrates through the middle of an upper beam, the hydraulic oil cylinder is fixed on a carrier through an upper oil cylinder seat at the upper position of the upper beam, a hydraulic oil tank is a square box body and is made of stainless steel, the hydraulic oil is stored in the oil tank, an energy accumulator, a hydraulic motor and a permanent magnet generator are fixed on the hydraulic oil tank, the base of the hydraulic oil tank is fixed on the ground of the carrier through a welding mode, the hydraulic oil cylinder is fixed at the top of an energy obtaining mechanism through the lower oil cylinder seat, an oil pipe is connected with the hydraulic oil cylinder and an energy conversion mechanism, the hydraulic oil tank stores the hydraulic oil, the upper oil cylinder seat is formed by welding a rectangular panel and a U, limiting the horizontal movement of the hydraulic oil cylinder through a clamp spring; the lower oil cylinder seat is composed of a square panel and semicircular vertical plates on two sides, a round hole is formed in the middle of each vertical plate, a bolt hole is formed in the panel, the lower oil cylinder seat is fixed to the top of the floater through a bolt, and one end of the hydraulic oil cylinder is arranged between the two vertical plates and fixed through a pin shaft penetrating through the vertical plates and the round holes of the hydraulic oil cylinder.
The floater is a fully-sealed hollow floater, the floater is made of stainless steel, a T-shaped bone structure is arranged inside the floater, one part of the floater is above a water line surface and the other part of the floater is below the water line surface in seawater, the part above the water line surface of a wave-facing surface of the floater is a straight wall surface, the part below the water line surface is a streamline curved surface, the curved surface is formed by translation of a function curve, the two sides and the back surface of the curve surface are straight wall surfaces, and the top of the floater is an arc top; the outer surface of the floater is coated with anticorrosive paint, a zinc block is welded on the surface of the floater below a water line surface to serve as a sacrificial anode, the water part of the floater shell facing the wave surface is a straight wall surface, the underwater part is a streamline curved surface, the curved surface is formed by translation of a function curve, and the function of the curve is as follows:
the ratio of the height of the straight wall surface of the wave-facing surface of the floater to the height of the curved surface is 0.25 to 0.33; the maximum distance between the wave-facing surface of the floater and the back surface of the floater is thickness, the maximum distance between the two side wall surfaces is width, the maximum distance between the top and the bottom of the floater is height, the ratio of the thickness to the width is 0.5-0.4, and the ratio of the width to the height is 0.8-0.9; the ratio of the distance from the bottom of the float to the height of the float in the still water state of the float is between 0.7 and 0.75.
Compared with the conventional oscillating float type device, the invention has the beneficial effects that:
(1) the floater adopts a streamlined curved surface design through hydrodynamic performance optimization, reduces the radiation damping of the floater and the viscosity of water, reduces energy loss, and improves the energy conversion efficiency of the device.
(2) The double vertical shafts are adopted to restrain the movement of the floater, so that the floater does linear movement with single degree of freedom, and the stability of the device is improved.
(3) The vertical shafts are fixed through the upper and lower cross beams, and the vertical shafts and the cross beams form an integral frame structure, so that the flatness and parallelism of the two vertical shafts can be conveniently controlled in the installation process.
(4) The frame structure formed by the floater, the vertical shaft and the cross beam is connected with the connecting plate through the bearing to form an integral structure, the structure can be fixed on the side wall of the carrier through bolts only by welding four mounting surfaces on the side wall of the carrier, and the mounting mode is simple.
(5) The device can utilize the existing ocean platform, breakwater, seashore and the like as carriers, the integral structure formed by the floater and the vertical shaft is arranged on the side wall of the carrier, and the power output equipment is arranged on the carrier, so that the carrier does not need to be additionally built, and the construction cost of the device is reduced.
(6) Except the floater, the vertical shaft and the cross beam, all the components are positioned above the water surface to operate, the watertight difficulty and the failure rate of the device are reduced, and the installation, the maintenance, the overhaul and the operation management are convenient.
(7) The bearing connecting plate of the floater and the bearing sleeve extends into the floater, so that the load-resisting capacity of the joint of the floater and the bearing sleeve is ensured.
(8) Rubber springs are respectively arranged at four end parts of the vertical shaft, so that the impact load of the float on the installation section of the vertical shaft under the condition of large waves is reduced.
The wall-mounted heaving float type wave energy power generation device has the characteristics of good starting performance, high conversion efficiency, good maintainability, simple structure, easiness in production, manufacture, transportation, installation, maintenance, overhaul and operation management, no need of complex watertight process and the like, and is suitable for wave energy power generation in the marine environment of China.
Drawings
Fig. 1 is a schematic two-dimensional diagram of a wall-mounted streamline wave energy power generation device.
Fig. 2 is a schematic structural diagram of an energy obtaining mechanism.
FIG. 3 is a schematic view of a support structure.
FIG. 4 is a schematic illustration of a power take-off system.
FIG. 5 is a schematic view of the sliding mechanism and the connecting member.
Figure 6 is a schematic vertical axis.
Fig. 7 is a schematic view of the upper beam.
Fig. 8 is a schematic view of the lower beam.
Fig. 9 is a schematic three-dimensional diagram of a wall-mounted streamline wave energy power generation device.
Fig. 10 graph for analyzing float motion performance.
Fig. 11 graph of float energy conversion performance analysis.
FIG. 12 is a graph showing comparative analysis of the movement performance with and without a mask.
FIG. 13 is a comparative analysis chart of energy conversion performance with and without a mask.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples:
the invention provides a wall-mounted vertical oscillation floater type wave energy power generation device, in particular to a wave energy power generation device which adopts an oscillation floater with streamline curved surface design to reciprocate along a vertical shaft to obtain wave energy and can be arranged on floating or fixed carriers such as seacoasts, ocean platforms, breakwaters and the like.
Mainly comprises an energy obtaining mechanism, a supporting structure, a power output system and the like. The energy obtaining mechanism consists of a floater, a sliding mechanism and a connecting piece, is a moving part of the device and is used for capturing wave energy; the support structure is a frame structure, consists of a support beam, a guide mechanism and a damping spring, is used for supporting the main components of the device and restraining and guiding the movement of the energy obtaining mechanism; the power output system consists of a power applying mechanism and an energy conversion mechanism and is used for converting wave energy captured by the floater into pressure energy for energy storage, driving the generator to generate electricity under set conditions and converting the wave energy into electric energy. The wall-mounted heaving float type wave energy power generation device can be mounted on wave-facing wall surfaces of a floating platform, a breakwater and a coast, is high in energy conversion efficiency, good in starting performance, strong in environment adaptability, simple in structure, convenient to build, install and maintain at sea, and low in production and building cost.
As shown in fig. 1, the present invention mainly comprises an energy obtaining mechanism, a supporting structure and a power output system. The energy obtaining mechanism is connected with the supporting structure through a bolt, a hydraulic oil cylinder of the power output system is fixed on the energy obtaining mechanism and the supporting structure, and the energy conversion mechanism is fixed on the carrier.
As shown in fig. 2, the main body of the capacitative mechanism is a float. The floater is a fully-sealed hollow floater, the floater is made of stainless steel, and a T-shaped framework structure is arranged inside the floater. In seawater, the float is partly above the water surface and partly below the water surface. The part above the water line surface of the wave-facing surface of the floater is a straight wall surface, the part below the water line surface is a streamline curved surface, the curved surface is formed by translation of a function curve, both sides and the back surface are straight wall surfaces, and the top of the floater is an arc-shaped top; the outer surface of the floater is coated with anticorrosive paint, and a zinc block is welded on the surface of the floater at the part below the water line surface to be used as a sacrificial anode. 4 connecting plates are welded on two sides of the floater, 2 connecting plates are arranged on each side and are parallel to each other; the connecting plate stretches into the interior of the floater and is used for enhancing the strength of the connecting part. The floater connecting plate is connected with the bearing connecting plate through a bolt, so that the floater, the bearing and the bearing sleeve form a whole, the floater can slide in a reciprocating mode along the direction of the vertical shaft, and the friction coefficient of the floater sliding along the vertical shaft is reduced through the water-lubricated bearing.
The water part of the wave-facing surface of the floater shell is a straight wall surface, the underwater part of the floater shell is a streamline curved surface, the curved surface is formed by translation of a function curve, and the function of the curve is
Both sides and the back surface are straight wall surfaces, and the top of the floater is an arc top; the ratio of the height of the straight wall surface of the wave-facing surface of the floater to the height of the curved surface is about 0.25 to 0.33; a thickness to width ratio of between about 0.5 and 0.4, a width to height ratio of between about 0.8 and 0.9; the ratio of the distance of the waterline position of the float in a standing water condition from the bottom of the float to the height of the float is between about 0.7 and 0.75.
The floater has excellent hydrodynamic performance and energy conversion performance, the movement performance curve of the floater is shown in figure 9, and the energy conversion performance curve of the floater is shown in figure 10.
The floater is arranged on the wave-facing surface of the ocean structure, the ocean structure shields the floater to generate a wave gathering effect, and the hydrodynamic performance and the energy conversion performance of the floater can be further optimized. The graph of the kinetic performance of the float with and without the shield is shown in fig. 11, and the graph of the energy conversion performance of the float is shown in fig. 12.
As shown in fig. 3, the main body of the support structure is a support beam and a vertical shaft. The supporting beam is used for supporting the whole device and comprises an upper beam and a lower beam, the vertical shaft is used for restraining the movement of the energy obtaining mechanism and comprises a left vertical shaft and a right vertical shaft root, the inner layer of the vertical shaft is a seamless steel pipe, the outer layer of the vertical shaft is a stainless steel sleeve, and the stainless steel sleeve plays a role in protecting the steel pipe in the inner layer of the vertical shaft. Both ends of each vertical shaft are stepped shaft necks, and the diameters of both ends are smaller. The two ends of the upper beam and the lower beam are respectively provided with a round hole, the inner diameter of the round hole is the same as the diameter of the shaft neck of the vertical shaft, and the shaft neck of the vertical shaft can extend into the round holes and is clamped at the junction of the shaft neck and the main body of the vertical shaft.
The bearing is a water lubrication bearing, the inner diameter of the bearing is the same as the outer diameter of the vertical shaft, and the bearing is four bearings. The bearing sleeves are cylindrical stainless steel sleeves coated with anticorrosive paint, and the number of the bearing sleeves is 2. Every 2 bearings are fixed on the upper and lower parts of the inner part of 1 bearing sleeve. Each vertical shaft passes through a bearing sleeve, shaft necks at the upper end and the lower end of each vertical shaft are embedded into four round holes of the upper beam 2 and the lower beam 2, and the upper beam 2, the lower beam and the two vertical shafts form a frame structure. Two sides of each bearing sleeve are welded with 2 parallel bearing connecting plates, and the bearing connecting plates are tangent to the arc surfaces of the bearing sleeves. One side of the bearing sleeve welded with the bearing connecting plate points to the inner side of the frame structure.
The main body of the power output system comprises a hydraulic oil cylinder, a hydraulic oil tank, an energy accumulator, a hydraulic motor, a generator and a related connecting assembly. The hydraulic cylinder is a stainless steel cylinder sprayed with anticorrosive materials, one end of a cylinder rod is fixed on a lower cylinder seat at the top of the floater through a pin shaft, and when the cylinder 3 needs to be replaced, the pin shaft is taken out, so that the cylinder 3 can be detached for replacement. The lower oil cylinder base is a rectangular plate, two sides of the lower oil cylinder base are 2 parallel semi-circular arc vertical plates, and a round hole is formed in the center of each vertical plate and used for penetrating through a pin shaft. The hydraulic oil cylinder penetrates through the middle of the upper beam, and the oil cylinder 3 is fixed on the carrier through the upper cylinder seat at the position above the upper beam. The hydraulic oil tank is square box, and the material is the stainless steel, and hydraulic oil is saved in the oil tank, and on energy storage ware, hydraulic motor and the generator was fixed in the oil tank, the oil tank base was fixed in carrier ground through welded mode.
The wall-mounted vertical oscillation float type wave energy power generation device is characterized in that a float is pushed by waves to vertically reciprocate along a vertical shaft, a hydraulic oil cylinder is driven to do work, wave energy is converted into pressure energy of an energy accumulator, when the pressure of the energy accumulator exceeds a set pressure value, the energy accumulator releases hydraulic oil, hydraulic oil flowing at a high speed drives a hydraulic motor to drive a generator to generate power, and the wave energy is finally converted into electric energy.
The wall-mounted heaving float type wave energy power generation device has the characteristics of good starting performance, high conversion efficiency, good maintainability, simple structure, easiness in production, manufacture, transportation, installation, maintenance, overhaul and operation management, no need of complex watertight process and the like, and is suitable for wave energy power generation in the marine environment of China.
The invention relates to a wall-mounted vertical oscillation float type wave energy power generation device, which has the following specific application and working flow:
a wall-mounted heaving float type wave energy power generation device is connected in a structure and a mode as shown in figures 1-8, an energy obtaining mechanism and a supporting structure are fixed on a wave facing surface of a carrier and are connected with a power output system, and the power output system is positioned in a carrier cabin. When waves exist, the waves apply loads on the floater, and due to the constraint action of the vertical shaft, the vertical loads of the floater transmit rotating torque through the hydraulic oil cylinder, the energy accumulator and the hydraulic motor, so that the wave energy is converted into rotating mechanical energy, the generator is driven to generate electricity, and finally the wave energy is converted into electric energy.
A wall-mounted heaving float type wave energy power generation device mainly comprises an energy obtaining mechanism, a supporting structure, a power output system and the like.
The energy obtaining mechanism is a moving part of the device and is used for capturing wave energy and converting the wave energy into mechanical energy of the energy capturing mechanism; the support structure is used for supporting the main components of the device and restraining and guiding the movement of the energy capture mechanism; the power output system is used for converting wave energy captured by the floater into pressure energy for energy storage, driving the generator to generate electricity under set conditions, and converting the pressure energy into electric energy.
The energy obtaining mechanism consists of a floater, 2 sets of sliding mechanisms and 2 sets of connecting pieces; the supporting structure is a frame structure and consists of a supporting beam, a guide mechanism and a damping spring; the power output system consists of a work applying mechanism and an energy conversion mechanism.
The floater is a core component for acquiring wave energy by the wave energy device and is a closed hollow floater; the sliding mechanism is used for restraining the movement of the floater; the connecting piece is used for connecting the floater with the sliding mechanism; the supporting beam is used for fixing a shaft system and supporting the whole wave power generation device; the guide mechanism is used for guiding the movement of the floater; the damping spring is used for reducing the impact load when the floater collides with the supporting beam; the work applying mechanism is used for applying work to hydraulic oil under the pushing of the floater and converting the mechanical energy of the floater into pressure energy of the energy conversion mechanism; the energy conversion mechanism is used for buffering and releasing hydraulic energy and finally converting the hydraulic energy into electric energy.
The floater consists of a floater shell and a supporting framework; the sliding mechanism consists of a bearing sleeve and 2 water lubrication bearings; the connecting piece is respectively connected with 2 sets of sliding mechanisms on two sides of the floater and consists of 4 connecting plates, wherein 2 connecting plates are welded on two sides of the bearing sleeve in parallel, the other 2 connecting plates are welded on the side wall of the floater in parallel, 5 rib plates are welded beside each connecting plate, and the connecting plates and the rib plates extend into the floater and are used for realizing the structural reinforcement of the joint of the floater; the supporting beam comprises an upper beam and a lower beam which are respectively and symmetrically arranged at the upper end and the lower end of the supporting structure, and the upper beam and the lower beam respectively comprise a beam body, 2 supporting seats, 2 mounting surfaces and the like; the guide mechanism consists of 2 vertical shafts; the damping springs are 4 rubber springs and are respectively fixed at the upper end and the lower end of the left vertical shaft and the right vertical shaft; the acting mechanism comprises a hydraulic oil cylinder, an upper oil cylinder support, a lower oil cylinder support and an oil pipe; the energy conversion mechanism comprises a hydraulic oil tank, an energy accumulator, a hydraulic motor and a permanent magnet generator.
The water part of the wave-facing surface of the floater shell is a straight wall surface, the underwater part of the floater shell is a streamline curved surface, the curved surface is formed by translation of a function curve, and the function of the curve is
Both sides and the back surface are straight wall surfaces, and the top of the floater is an arc top; the bearing sleeve is a cylindrical shell and is used for supporting the water lubrication bearing; the water lubricated bearings are used for reducing sliding friction when the floater moves along the vertical shaft, and each 2 of the water lubricated bearings are respectively fixed at the upper part and the lower part in the bearing sleeve; the distance between the 2 connecting plates fixedly connected with the floater is the same as that between the 2 connecting plates fixedly connected with the bearing sleeve, and the two connecting plates are connected through bolts; the beam bodies of the upper beam and the lower beam are of box-type structures and are used for realizing structural reinforcement of the beam bodies; the supporting seats of the upper beam and the lower beam are used for supporting the vertical shaft and are fixedly connected to two ends of the beam body respectively, and the middle part of the supporting seat is a cylindrical hole; the mounting surfaces of the upper beam and the lower beam are used for fixing the wave energy device on the side wall of the carrier; the vertical shaft is composed of a seamless steel pipe and a stainless steel sleeve, stepped shaft necks are arranged at two ends of the vertical shaft, the diameter of each shaft neck of the vertical shaft is the same as the inner diameter of a cylindrical hole of the supporting seat, the shaft neck of each vertical shaft respectively extends into the hole of the supporting seat of the upper beam and the lower beam and is clamped at the boundary of the shaft necks, and the vertical shaft and the supporting beam are combined into a frame structure; the upper oil cylinder support is used for limiting the horizontal movement of the hydraulic oil cylinder; the lower cylinder support is used for fixing the cylinder to the top of the float; the oil pipe is used for connecting the hydraulic oil cylinder and the energy conversion mechanism, so that the hydraulic oil circulates between the oil cylinder and the energy conversion mechanism; the oil tank is used for storing hydraulic oil; the energy accumulator is used for converting the mechanical energy of the floater into pressure energy; the hydraulic motor is used for converting the pressure energy of the energy accumulator into the rotating mechanical energy of the output shaft; the permanent magnet generator is connected with the hydraulic motor and converts mechanical energy into electric energy under the driving of the motor.
The ratio of the height of the straight wall surface of the wave-facing surface of the floater to the height of the curved surface is about 0.25 to 0.33; the maximum distance between the wave-facing surface of the floater and the back surface of the floater is thickness, the maximum distance between the two side wall surfaces is width, the maximum distance between the top and the bottom of the floater is height, the ratio of the thickness to the width is about 0.5 to 0.4, and the ratio of the width to the height is about 0.8 to 0.9; the ratio of the distance from the waterline position of the floater in a still water state to the bottom of the floater to the height of the floater is about 0.7 to 0.75; the middle part of the upper beam body is provided with a unique oval hole for the hydraulic oil cylinder to pass through; the mounting surface of the upper beam and the lower beam is a square panel, the square panel is fixedly connected to the back of the supporting seat and extends out of a certain width around the supporting seat, and the extending part is a circle of bolt holes and is used for hanging the device on the side wall of the carrier through bolts. The upper oil cylinder support is formed by welding a rectangular panel and a U-shaped plate, bolt holes are formed in the periphery of the panel, the support is fixed on the carrier through bolts, a clamp spring is arranged in the U-shaped plate, the oil cylinder penetrates through the support, and the horizontal movement of the oil cylinder is limited through the clamp spring; the lower oil cylinder support is composed of a square panel and semicircular vertical plates on two sides, a round hole is formed in the middle of each vertical plate, a bolt hole is formed in the panel, the support is fixed to the top of the floater through bolts, one end of the oil cylinder is arranged between the two vertical plates, and one end of the oil cylinder is fixed through the round holes formed in the vertical plates and the oil cylinder and penetrates through the round holes of the vertical plates and the oil cylinder through a pin.
A wall hanging heaving float type wave energy power generation device mainly comprises an energy obtaining mechanism, a supporting structure, a power output system and the like; the ocean structures such as the existing ocean platforms and breakwaters can be used as carriers, the energy-obtaining mechanism is suspended on the side face of the carrier through the supporting structure to capture wave energy, the power output system is installed inside the carrier, and the wave energy captured by the energy-obtaining mechanism is converted into electric energy.
The wall-mounted vertical-swinging floater type wave energy power generation device can be mounted on the existing ocean structures such as ocean platforms and breakwaters, the floats are shielded by the ocean structures, the wave gathering effect is achieved, and the energy conversion efficiency of the device is improved.
The energy obtaining mechanism is a moving part of the device and is used for capturing wave energy and converting the wave energy into mechanical energy of the energy capturing mechanism; comprises a floater, 2 sets of sliding mechanisms and 2 sets of connecting pieces.
The support structure is used for supporting the main components of the device and restraining and guiding the movement of the energy capture mechanism; the supporting structure is a frame structure and comprises a supporting beam, a guiding mechanism and a vibration damping mechanism.
The power output system is used for converting wave energy captured by the floater into pressure energy for energy storage, driving the generator to generate electricity under a set condition and converting the pressure energy into electric energy; the power output system consists of a work applying mechanism and an energy conversion mechanism.
The floater is a core component for acquiring wave energy by the wave energy device, is a closed hollow floater and consists of a floater shell and a supporting aggregate; the water part of the wave-facing surface of the floater shell is a straight wall surface, the underwater part of the floater shell is a streamline curved surface, the curved surface is formed by translation of a function curve, and the function of the curve is
Both sides and the back surface are straight wall surfaces, and the top of the floater is an arc top; the ratio of the height of the straight wall surface of the wave-facing surface of the floater to the height of the curved surface is about 0.25 to 0.33; a thickness to width ratio of between about 0.5 and 0.4, a width to height ratio of between about 0.8 and 0.9; the ratio of the distance of the waterline position of the float in a standing water condition from the bottom of the float to the height of the float is between about 0.7 and 0.75.
The sliding mechanism consists of a bearing sleeve and 2 water lubrication bearings; the bearing sleeve is a cylindrical shell and is used for supporting the water lubrication bearing; the water lubricated bearings are used for reducing sliding friction when the floater moves along the vertical shaft, and every 2 water lubricated bearings are respectively fixed at the upper part and the lower part in the bearing sleeve.
The connecting piece is used for connecting the floater with the sliding mechanism; the connecting piece is respectively connected with 2 sets of sliding mechanisms on two sides of the floater and is composed of 4 connecting plates, wherein 2 connecting plates are welded on two sides of the bearing sleeve in parallel, in addition, 2 connecting plates are welded on the side wall of the floater in parallel, 5 rib plates are welded beside each connecting plate, and the connecting plates and the rib plates extend into the floater and are used for realizing the structural reinforcement of the joint of the floater.
The supporting beam comprises an upper beam and a lower beam which are respectively and symmetrically arranged at the upper end and the lower end of the supporting structure, and the upper beam and the lower beam respectively comprise a beam body, 2 supporting seats, 2 mounting surfaces and the like; the beam bodies of the upper beam and the lower beam are of box-type structures and are used for realizing structural reinforcement of the beam bodies; the supporting seat is used for supporting the vertical shaft and is fixedly connected to two ends of the beam body respectively, and the middle part of the supporting seat is a cylindrical hole; the mounting surface is positioned on the back surface of the supporting seat, and the wave energy device can be fixed on the side wall of the carrier by bolts.
The guide mechanism is used for guiding the movement of the floater and comprises 2 vertical shafts, each vertical shaft comprises a seamless steel pipe and a stainless steel sleeve, stepped shaft necks are arranged at two ends of each vertical shaft, the diameter of each shaft neck of each vertical shaft is the same as the inner diameter of a cylindrical hole of the support seat, the shaft neck of each vertical shaft extends into the hole of the support seat of the upper beam and the lower beam and is clamped at the boundary of the shaft necks, and the vertical shafts and the support beams form a frame structure.
The damping spring is used for reducing impact load when the floater collides with the supporting beam, and four rubber springs are respectively fixed at the upper end and the lower end of the left vertical shaft and the right vertical shaft.
The acting mechanism comprises a hydraulic oil cylinder, an upper oil cylinder support, a lower oil cylinder support and an oil pipe; the upper oil cylinder support is formed by welding a rectangular panel and a U-shaped plate, bolt holes are formed in the periphery of the panel, the support is fixed on the carrier through bolts, a clamp spring is arranged in the U-shaped plate, the oil cylinder penetrates through the support, and the horizontal movement of the oil cylinder is limited through the clamp spring; the lower oil cylinder support is composed of a square panel and semicircular vertical plates at two sides, a round hole is formed in the middle of each vertical plate, a bolt hole is formed in the panel, the support is fixed to the top of the floater through bolts, one end of the oil cylinder is arranged between the two vertical plates, and one end of the oil cylinder is fixed through a pin shaft penetrating through the vertical plates and the round holes of the oil cylinder; the oil pipe is used for connecting the hydraulic oil cylinder and the energy conversion mechanism, so that the hydraulic oil circulates between the oil cylinder and the energy conversion mechanism.
The energy conversion mechanism is used for buffering and releasing hydraulic energy and finally converting the hydraulic energy into electric energy and comprises a hydraulic oil tank, an energy accumulator, a hydraulic motor and a permanent magnet generator. Under the drive of the floater, the hydraulic oil in the hydraulic oil tank is pumped into the energy accumulator by the hydraulic oil cylinder, the pressure of the energy accumulator is increased, when the pressure of the energy accumulator reaches a certain pressure value, the energy accumulator releases the hydraulic oil, the hydraulic oil flows to the hydraulic motor at a high speed under the action of high pressure, and the driving motor drives the generator to do work to convert mechanical energy into electric energy.
Claims (4)
1. The utility model provides a hanging is hung and is swung float-type wave energy power generation facility, installs in floating formula or fixed carrier, including capacitation mechanism, bearing structure and power take off system, its characterized in that: the supporting structure comprises an upper beam, a lower beam and a vertical shaft; the power output system comprises a work applying mechanism and an energy conversion mechanism, wherein the work applying mechanism comprises a hydraulic oil cylinder, an oil cylinder seat and an oil pipe; the vertical shafts comprise a left vertical shaft and a right vertical shaft, the upper ends of the vertical shafts are fixedly connected with the upper beam, the lower ends of the vertical shafts are fixedly connected with the lower beam, and the two vertical shafts are connected with the upper beam and the lower beam and then are in a square shape; the hydraulic oil cylinder penetrates through the middle of the upper beam and is fixed through the oil cylinder seat, the oil pipe is connected with the hydraulic oil cylinder and the energy conversion mechanism, and the energy conversion mechanism is fixed on the carrier; the energy obtaining mechanism consists of a floater, a bearing sleeve, a water lubricating bearing and a bearing connecting plate; four connecting plates are welded on two sides of the floater, two connecting plates are arranged on each side, and the connecting plates are parallel to each other; connecting plates welded on two sides of the floater extend into the floater and are connected with the bearing connecting plates through bolts; the inner diameter of each water-lubricated bearing is the same as the outer diameter of the vertical shaft, and every two water-lubricated bearings are fixed at the upper part and the lower part of the inside of one bearing sleeve; each vertical shaft respectively passes through a bearing sleeve, a shaft neck at the upper end of each vertical shaft is embedded into a round hole of an upper beam, a shaft neck at the lower end of each vertical shaft is embedded into a round hole of a lower beam, the upper beam, the lower beam and the two vertical shafts form a frame structure, two parallel bearing connecting plates are welded on two sides of each bearing sleeve, the bearing connecting plates are tangent to the arc surfaces of the bearing sleeves, and one side of each bearing sleeve, which is welded with the bearing connecting plates, points to the inner side of the frame structure.
2. The wall-mounted heaving float type wave energy power generation device according to claim 1, characterized in that: the upper beam and the lower beam jointly form a supporting beam, wherein the upper beam consists of a first beam body, a first supporting seat and a first mounting surface, the lower beam consists of a second beam body, a second supporting seat and a second mounting surface, the vertical shafts comprise a left vertical shaft and a right vertical shaft, the inner layers of the vertical shafts are seamless steel pipes, the outer layers of the vertical shafts are stainless steel sleeves, two ends of each vertical shaft are stepped shaft necks, and the diameters of the two ends are smaller; two ends of the upper beam and the lower beam are respectively provided with a round hole, the inner diameter of each round hole is the same as the diameter of the journal, and the journal extends into the round holes and is clamped at the junction of the journal and the vertical shaft; the bearing sleeves are cylindrical stainless steel sleeves coated with anticorrosive paint, and the two bearing sleeves are formed; the four damping springs are rubber springs and are respectively fixed at the upper end and the lower end of the left vertical shaft and the right vertical shaft; the first roof beam body of entablature is the van-type structure, first supporting seat supports the vertical scroll, fixed connection is in the both ends of first roof beam body, the middle part is cylindrical hole, first roof beam body middle part is equipped with the ellipse circular hole, hydraulic cylinder passes the ellipse circular hole, first installation face is square panel, fixed connection stretches out certain width at the first supporting seat back and around first supporting seat, it is the round bolt hole to stretch out the position, hang the device in the carrier lateral wall through the bolt, the underbeam is installed with the entablature symmetry, the structure is the same completely.
3. The wall-mounted heaving float type wave energy power generation device according to claim 1, characterized in that: the energy conversion mechanism consists of a hydraulic oil tank, an energy accumulator, a hydraulic motor and a permanent magnet generator, wherein the oil cylinder base comprises an upper oil cylinder base and a lower oil cylinder base; the hydraulic oil cylinder is a stainless steel oil cylinder sprayed with anticorrosive materials, one end of an oil cylinder rod is fixed on a lower oil cylinder seat at the top of the floater through a pin shaft, the hydraulic oil cylinder is fixed on a carrier through an upper oil cylinder seat at the upper position of an upper beam, the hydraulic oil tank is a square box body made of stainless steel, the hydraulic oil is stored in the hydraulic oil tank, the energy accumulator, the hydraulic motor and the permanent magnet generator are fixed on the hydraulic oil tank, a base of the hydraulic oil tank is fixed on the bottom surface of the carrier through a welding mode, the lower oil cylinder seat fixes the hydraulic oil cylinder on the top of the energy obtaining mechanism, an oil pipe is connected with the hydraulic oil cylinder and the energy conversion mechanism, the upper oil cylinder seat, the upper oil cylinder seat is fixed on the carrier through a bolt, a clamp spring is arranged inside the U-shaped plate, the hydraulic oil cylinder penetrates through the upper oil cylinder seat, and the horizontal movement of the hydraulic oil cylinder is limited through the clamp spring; the lower oil cylinder seat is composed of a square panel and semicircular vertical plates on two sides, a round hole is formed in the middle of each vertical plate, a bolt hole is formed in the panel, the lower oil cylinder seat is fixed to the top of the floater through a bolt, and one end of the hydraulic oil cylinder is arranged between the two vertical plates and fixed through a pin shaft penetrating through the vertical plates and the round holes of the hydraulic oil cylinder.
4. The wall-mounted heaving float type wave energy power generation device according to claim 1, characterized in that: the floater is a fully-sealed hollow floater, the floater is made of stainless steel, a T-shaped framework structure is arranged inside the floater, one part of the floater is above a water line surface and the other part of the floater is below the water line surface in seawater, both sides and the back of the floater are straight wall surfaces, and the top of the floater is an arc top; the outer surface of the floater is coated with anticorrosive paint, a zinc block is welded on the surface of the floater below a water line surface to serve as a sacrificial anode, the water part of the floater shell facing the wave surface is a straight wall surface, and the underwater part of the floater shell is a streamline curved surface.
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| CN114087111A (en) * | 2021-11-23 | 2022-02-25 | 山东大学 | Self-floating independent wave power generation device and working method thereof |
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