Classifications

• • 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
  • F03B13/1855—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 where the connection between wom and conversion system takes tension and compression
  • F03B13/186—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 where the connection between wom and conversion system takes tension and compression the connection being of the rack-and-pinion type
• • 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
  • F03B13/188—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 is flexible or deformable
• • 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
  • F05B2260/00—Function
  • F05B2260/40—Transmission of power
  • F05B2260/403—Transmission of power through the shape of the drive components
  • F05B2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
  • F05B2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclic, planetary or differential type
• • 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

Definitions

• wave energy converters There are a variety of arrangements of wave energy converters known. There are systems with linear generators (Westwave), rocking arrangements (Kloss), piston systems (AW Energy Oy), gas pressure systems and many more.
• the low frequency and the changing amplitudes of the water waves are a challenge that is difficult to master for linear generators. Their efficiencies are high, especially at high frequencies. In addition, a complicated structure in comparison with commercially available rotary generators. A useful optimization for a broad band of amplitudes Water waves are difficult because of different overlap ranges of oscillator and stator.
• the patent DE 10 2010 020 219 shows a system which generates a rotary movement with high generator speed from the shaft stroke.
• the generator buoy due to the floating of the generator buoy on the wave mountain, it is permanently exposed to seawater, which leads to a corrosive and mechanical load.
• the joints of the three-legged linear guide could be excessively overstretched or the generator buoy could hit the underwater buoyant body.
• the publication DE 2010 050 188 shows a similar system which is suitable for the time.
• the structure of the system is similar to that of the patent DE 10 2010 020 219.
• the generator buoy is based with their joints but not from a Unterwasserschwimmoasa, but by a
• the publication WO 2010/007418 shows a wave energy converter which operates with two main elements: a buoy floating on the sea surface and a submerged encased linear generator part, which is attached to the seabed with a rope and which can interact with the buoy upwards via another pull rope ,
• the disadvantages of this system are that the generator can only operate at low frequency and that the main assembly is submerged and thus water can penetrate and maintenance is difficult. Since there is no linear guide between the main assemblies, but only an articulated coupling of the traction cable is present, flow and wind can cause that when tilting the buoy relative to the encapsulated linear generator part, the usable wave amplitude is narrowed.
• the patent document DE 60 2004 006 297 T2 describes a wave energy converter which works with a rotating rotating on the water housing, which is connected via a pull rope with a submerged buoyancy per.
• the pendulum rotation of the housing arises with the wave motion by the winding and unwinding of the pull rope on its outer circumference.
• the rotational energy is converted into electrical energy.
• the present invention is therefore based on the object of providing an improved wave energy converter.
• the proposed invention provides a wave energy converter as a mechanical system for utilizing potential wave energy.
• a wave energy converter as a mechanical system for utilizing potential wave energy.
• at least one universal joint of at least one Hubparallelogramms is attached to a tripod with buoyancy bodies.
• a force transmission element is or is attached in or on at least one other
• a generator unit is provided, the generator shaft is rotated by a trained for transmitting an upward and / or downward movement of the at least one Hubparallelogramms on the generator shaft transmission element.
• the invention is characterized by a comparatively simple structure, which can be realized with cost-effective means.
• the wave energy converter can be used, for example, as a ship charging station or ship filling station for ships with electric motors.
• the at least one universal joint of the at least one Hubparallelogramms can be hinged to the tripod with buoyancy bodies.
• the universal joint can also be flexible or otherwise attached to the tripod.
• the tension element can be attached to a pull rope and / or a
• the power transmission element may also be tensioned to the seabed or another fixed point in the sea. It is for example possible to anchor the power transmission element by means of an anchor on the seabed.
• the power transmission element can also be attached to underwater platforms, which are for example carried by floats. This makes it possible for the wave energy converter to be arranged even in deep waters where attachment to the seabed is difficult.
• the power transmission element may be a tension element, for example a tension axle. In this case, the power transmission element transmits tensile forces. It is in another embodiment also possible to form the force transmission element such that it transmits pressure forces.
• the transmission element can be, for example, a toothed rack, a toothed belt, a V-belt, a pressure spindle, a tension spindle, a chain or a drive cable.
• the generator shaft can then by the interaction of the height movement of the generator unit with the timing belt, the V-belt, the pressure spindle, the pull spindle or with the stand attached to the rack or by the chain or the drive cable, which winds on the generator housing and on the traction axis is attached, in rotation.
• An embodiment of the invention provides that the generator unit is fastened to at least one further joint lying above the universal joint or a strut of the lifting parallelogram.
• the arrangement of the generator unit over the universal joint a contact between the water and the generator unit can be avoided. This facilitates maintenance work on the wave energy converter.
• the generator unit is attached to a further under the universal joint joint or a strut of Hubparallelogramms. With this arrangement, it is preferable that a center of gravity of the wave energy converter is lower than in the embodiment described above, where the generator unit is disposed above the universal joint.
• a freewheel is provided in a generator housing. Because of the freewheel one direction of rotation of the generator shaft is prescribed. The potential energy of the water waves can then be used in either an upward or downward movement of the buoyant body. As a result, a relative amount of the upward or downward movement is increased, since a movement in a respective other direction is not used to generate electrical energy. Thus, a speed of the generator shaft can be increased, whereby the Wir- increase the degree of efficiency of the wave energy converter.
• two-pole generators are used because they have better efficiency than generators comprising more than two poles.
• FIG. 1 shows the generator unit of the wave energy converter (WEK) in longitudinal section
• Figure 2 shows a gearless generator unit of the wave energy converter
• Figure 3 shows a generator unit of the WEK with ordinary transmission
• Figure 4 shows a section (plane A-A) of the generator unit and the planetary gear
• Figure 5 shows the wave energy converter from the front (drive pinion 4 right)
• Figure 6 shows the wave energy converter from the right side
• FIG. 7 shows the WEK (version with drive cable) at low tide in the wave trough.
• Figure 8 shows the WEK (version with drive cable) at low tide on the wave crest
• FIG. 9 shows the WEK (version with drive cable) at high tide in the wave trough
• Figure 10 shows the WEK (version with drive cable) at high tide on the wave mountain
• FIG. 11 shows a flow damper for installation in the pull cable 25
• the mode of operation is simple (see FIGS. 1 to 4).
• the buoyant body 21 floats on the shaft.
• the traction cable 25, whose one end is connected to the seabed or other fixed point in the water and whose other end is connected to the traction axis 24 of Hubparallelogramme, thus draws on this. This leads to the stretching of the two Hubparallelogramme, at the Main axis are hinged.
• the generator unit, which lies in the upper joints of Hubparallelogramme is raised. Since the generator housing 1 is fixedly connected to a drive pinion 4 and otherwise ball-bearing, it gets into rotation.
• a planetary gear provides for the upward movement of the generator unit for the transmission of rotational movement to the generator shaft.
• the planet carrier 5 is held from the outside by a connecting bracket 13 between the fixed shaft end 12 which is fixedly connected to the planet carrier 5, and a strut 14 of Hubparallelogramms.
• the planet carrier 5 performs only a slight pendulum motion when going on and off the generator unit.
• the translation of the system and the generator shaft speed are set by the size of Hubparallelogramme, the ratio of the planetary gear and the size of the drive pinion 4.
• a common gear can be used or completely dispensed with a transmission.
• the driven by the rack pinion drive is attached directly to the then protruding from the generator unit rotatable generator or transmission shaft.
• the generator housing is not rotatable and is fastened in the upper joints of the Hubparalle- logramms.
• the bobbin of the generator is fixedly connected to the housing of the generator unit.
• Figure 1.1 shows a gearless version of the generator unit
• Figure 1.2 shows an embodiment of the generator unit with a conventional transmission for speed increase.
• the important generator unit of the wave energy converter is always far away from the high-energy wave crest. The greater the storm and the higher the wave crests the greater the distance from them.
• the construction of the mechanical wave energy converter is as follows: At least one universal joint of at least one Hubparallelogramms is hinged to a tripod 20 with buoyancy bodies 21. In at least one other joint of the Hubparallelogramms lying under this universal joint is a tension element (eg., Pulling axis 24) on which a pull cable 25 is fixed, which is braced to the seabed or other fixed point in the sea. At at least one further joint lying above the universal joint or a strut 14 of the Hubparallelogramms a generator unit is attached, the generator shaft 9 by the interaction of the height movement of the generator unit with a tripod mounted on the rack 17 comes into rotation.
• a tension element eg., Pulling axis 24
• a drive cable 27 can be used for power transmission, which winds on the generator housing and is attached to the traction axis.
• the generator housing 1 is turned back and forth during winding and unwinding of the rope.
• the freewheel is then most conveniently arranged in the sun gear.
• a rope return coil spring between the generator housing
• FIGS. 5 to 8 show the embodiment variant with drive cable 27.
• the rotatable generator housing 1 has an internal toothing 6, in which the planetary gears 7 on the externally held, slightly oscillating about its fulcrum planet carrier 5 by the rotation of the generator housing 1 also rotate and drive the sun gear 8 with the generator shaft 9.
• the planet carrier 5 is fixedly connected to the shaft end 12, which is in turn connected by the connecting bracket 13 fixedly connected to an upper strut 14 of a Hubparallelogramms.
• the guide bearing 11 is designed as a ball bearing, the slotted guide rod 18 must be slightly wider than the bearing outer diameter of the ball bearing, so that unilateral rolling of the outer bearing shell is guaranteed.
• At least one guide bearing 11 can also be fastened to the rotatable shaft end 3, which is located in or on a guide rod on the rack side of the shaft energy. converters runs and ensures optimum engagement of the drive pinion 4 in the rack 17.
• the generator unit of the wave energy converter can be stored in the top 4 holes of the 4 struts of Hubparallelogramme both, wherein the one
• Storage with the connecting bracket 13 is a fixed point and the other 3 bearings are provided with ball or plain bearings.
• the bearings of the generator and the Hubparallelogramme can be performed lubricant-free and seawater suitable as a ceramic bearing or ceramic coated bearings.
• the power cable from the bobbin of the generator 2 is guided by the planetary wheel 5 and the fixed shaft end 12 to the outside. Between the rotatable generator housing 1 and the fixed shaft end 12, a seal 16 is arranged, which the penetration of rain and water splashes in the
• a spring-damping element ( Figure 9) can be arranged as a pressure-tight piston-cylinder unit.
• the traction cable 25 is extended via the slow displacement of a liquid from one side of the piston to the other via a throttling path in order to avoid a flow-related extension of the lifting parallelograms.
• a compression spring is tensioned, which causes the release of the ocean currents in their relaxation, the return of the liquid and the rope shortening.
• the liquid can also be seawater. Since the liquid can only move very slowly through the throttle section, the sea waves with their period have no influence on the rope length.
• each Hubparallelogramm from at least 2, but also any number of superimposed, articulated Einzelparallelogrammen be constructed.
• the individual sizes and thus individual lifting heights of the Hubparallelogramme can also be different in a mechanism of action.
• a compression spring at least between 2 superimposed joints or a tension spring at least between 2 sparei- nander lying joints of Einzelparallelogramme be installed.
• a further embodiment of the wave energy converter is characterized in that the generator 4 is mounted on a lower generator stand 39 instead of its upper bearing between two Hubparallelogrammen.
• FIG. 12 shows a wave energy converter with a generator below.
• FIG. 13 shows a toothed belt guide
• FIG. 14 shows a wave energy converter with two toothed belt drives.
• FIG. 15 shows a wave energy converter with linear guidance of the toothed belt weights
• a toothed belt 31 can be used for power transmission, wherein this is fixed to the upper axis 40, is guided over a guide roller 33 and is weighted with a Zahnriemenenda 32.
• An advantageous symmetrical design is that instead of a toothed belt 31, two toothed belts 31 are used and these drive the generator 2 on both sides of the generator 2, which then has two shaft ends. Additional stabilization of Hubparallelogramme can be achieved if the movable generator stand 39 for stabilization additional lateral linear guides 36 receives.
• a traction rod 37 which is additionally guided via a bottom linear guide 38, can also be used to transmit the power, which is fastened to the generator stand 39.
• the pull rod 37 can be designed to adapt to the flow and the tidal lift as a hydraulic cylinder and change its length accordingly.
• the final weight 41 (FIG. 13) of one or both toothed belts can be given a linear guide which can move vertically on the pull rod 37. This prevents unacceptable pendulum movements of the weight in the water.
• the cable routing for the derivation of the generated energy below the Movable generator can be done with the help of so-called energy chains that absorb the cable and consist of mobile, low-wear and lubricant-free plastic members.
• plastic bearings with glass balls can also be used. These are particularly seawater suitable.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Applications Claiming Priority (2)

Publications (2)

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Citations (4)

Family Cites Families (2)

• 2012
  • 2012-06-08 DE DE102012011287.4A patent/DE102012011287B4/de not_active Expired - Fee Related
• 2013
  • 2013-06-07 WO PCT/EP2013/061791 patent/WO2013182678A2/fr not_active Ceased

Patent Citations (4)

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