CN1103000C - Four-bar wave power generator - Google Patents
Four-bar wave power generator Download PDFInfo
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- CN1103000C CN1103000C CN99116355A CN99116355A CN1103000C CN 1103000 C CN1103000 C CN 1103000C CN 99116355 A CN99116355 A CN 99116355A CN 99116355 A CN99116355 A CN 99116355A CN 1103000 C CN1103000 C CN 1103000C
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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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Abstract
The present invention relates to a four-bar type ocean wave generator which comprises a mechanism for receiving the thrust force of ocean waves, a mechanism for transmitting the thrust force of the ocean waves, a rotating, speed changing and driving mechanism and a generator. The present invention has the key point that the mechanism for transmitting the thrust force of the ocean waves adopts a four-bar mechanism in which a push rod receives the thrust force of the ocean waves, the thrust force of the ocean waves is applied to operating flywheels by a connecting rod and a crank, and the crank and the operating flywheels are connected in a one-way engaging and disengaging mode. A crank sliding block type four-rod structure can be adopted, and a swing rod type four-rod structure can also be adopted. A plurality of resetting devices are arranged according to different structures, inertia flywheels can be adopted, and resetting springs can also be adopted. The present invention has the advantages of simple structure, stable operation and high efficiency.
Description
Technical field
The present invention relates to a kind of four-bar wave power generator, belong to the seawave power generation technical field.
Background technique
On shore line all over the world, wave is ceaselessly being patted seashore year after year day by day.In order to resist the impact of wave to seashore, people have built various breakwater, wave eliminating bank.But,, never find an effective way although people have paid very big effort for a long time for the utilization of the huge surf of this energy.Through Chinese patent data of optical disk library searching, near this programme, also adopted bar linkage structure be " the wave thrust electricity generating device " of number of patent application 88220860.8 but this device and this programme relatively, the two mentality of designing and scheme implementation method are essentially different.This device is the main structure feature with the sensor, the sensor construction complexity, and during work that wave power decomposition back is stressed, the loss of wave power is big, and it is little that institute obtains wave power.Direct and the contact with sea water of sensor, perishable, maintenance and maintenance workload are big.In addition, its whole device for mechanical efficient is low, is difficult in the practice succeed.
Summary of the invention
Purpose of the present invention is utilized a kind of simple mechanism exactly, moves back and forth the rotation that is transformed into flywheel with what offshore was surged, and the rotation by flywheel drives generator for electricity generation.This simple mechanism is exactly a fourbar linkage.Fourbar linkage is widely used in the every field of engineering, machinery already.In the utilization of wave energy, fourbar linkage can have been given play to due effect equally.
Technological scheme of the present invention comprises four major parts: accept the wave thrust mechanism, transmit wave thrust mechanism, rotation variable transmission mechanism and generator.Main points of the present invention are to transmit the wave thrust mechanism and have adopted fourbar linkage, promptly an end of push rod 13 is connected with the wave thrust mechanism in four bars, accept wave thrust, push rod 13 the other ends are connected with connecting rod 4, the other end of connecting rod 4 is connected with crank 3, the output terminal of crank 3 connects with the one-way clutch mode of work flywheel 2, and there is certain distance in interface and flywheel axle center makes the flywheel rotation so that produce moment.
Four-bar thrust transfer mechanism can be the crank block type structure, it is a termination thrust mechanism of push rod 13, the other end is connected with slide block 5, the another side of slide block 5 is connected with connecting rod 4, the output terminal of crank 3 links in the one-way clutch mode with work flywheel 2 and inertial flywheel 8 is fixedly connected, and there is certain distance in interface and flywheel axle center.Inertial flywheel 8 can be finished the backlash stroke of mechanism smoothly.
Four-bar thrust transfer mechanism also can adopt the rocker type structure.Push rod 13 plays the rocking bar effect at this, it can serve as with accepting the wave thrust plate, its bottom is fixed, the other end is connected with connecting rod 4, the other end of connecting rod 4 is connected with crank 3, the output terminal of crank 3 connects in the one-way clutch mode with the work flywheel, and there is certain distance in interface and flywheel axle center, makes the flywheel rotation so that produce moment.At the wave thrust plate behind, promptly a side of push rod 13 has Returnning spring 14, and the backlash stroke of mechanism is finished smoothly.
Advantage of the present invention is:
Quadratic crank mechanism is equipped with huge wave push pedal and adds the flywheel that links with unique way with crank to being the main structure feature, and simple in structure, the efficient height is easy to safeguard.At first huge wave push pedal can be obtained wave power fully, by fourbar linkage wave power is passed on the work flywheel that links in the one-way clutch mode with crank with very high efficient then, and drive generator for electricity generation through transmission shaft and gear accelerator by the work flywheel.The inertial flywheel (the crank block type wave drives generator) or the return spring (the rocker type wave drives generator) that fixedly link with crank can be finished the backlash stroke of mechanism smoothly.In normal generating work, whole device removes the wave push pedal and push rod will be exposed to the seawater China and foreign countries, and it is made parts and all is enclosed in indoorly, and wave push pedal and push rod can adopt firm resistant material to make, and easy care is hanged down in entire equipment consumption.So the technical program not only is suitable for building small hydropower station, and obtaining on the basis of certain experience, also can be used for exploitation and build medium-sized power station or even large-scale power station, thereby be to have the scheme that business development is worth.
Description of drawings
Fig. 1 is a structural representation of the present invention: the 1st, base, the 2nd, flywheel, the 3rd, crank, the 4th, connecting rod, the 5th, slide block, the 6th, wave thrust plate, the 8th, guide wheel track, the 9th, gear accelerator, the 10th, the generating piece, the 11st, transmission shaft, the 12nd, drive belt system.
Fig. 2 is a crank block type fourbar linkage plan view: the 1st, and base, the 2nd, work flywheel, the 3rd, crank, the 4th, connecting rod, the 5th, slide block, the 6th, wave thrust plate, the 7th, inertial flywheel, the 8th, guide wheel track, the 9th, gear accelerator, the 10th, generator, the 11st, transmission shaft, the 12nd, drive belt system.
Fig. 3 is the rocker type structural representation: the 2nd, and work flywheel, the 3rd, crank, the 4th, connecting rod, the 13rd, push rod serve as rocking bar, the 14th, Returnning spring.
Embodiment
Is the working principle that example illustrates four-bar wave power generator below in conjunction with accompanying drawing with slidercrank mechanism and slotted link mechanism.
1. the crank block type wave drives generator
Fig. 1 has provided the driving device structure and the working principle schematic representation of generator.The power station is selected in the littoral zone appropriate location.Generator and whole crank block device are placed on the big pedestal, and pedestal is fixed on the bedding that is built in littoral zone.Bigger as this area's tidal range, pedestal can be made buoyancy tank, and the fluctuation with tidal level on bedding moves up and down.No matter how pedestal is fixed, the effect that reach is will make to surge can be transformed into the breaking wave with enormous impact power when meeting with pedestal.And should the fragmentation wave energy act in the wave push pedal of slidercrank mechanism on the pedestal, thereby make this push pedal obtain maximum wave thrust.
Two ends up and down of push pedal are settled guide wheel, and push pedal is moved along track, and it is minimum that the moving resistance of push pedal also reduces to.It still is that curved surface should be determined by the hydraulic model experiment that the shape of push pedal adopts the plane.The thrust of wave passes to crank by push rod through slide block, and the flywheel that crank drives the one side rotates.This flywheel is acting flywheel or be the work flywheel, with crank with one-way clutch mode link (relation that is similar to chain and flywheel on the bicycle rear).Because the irreqularity of ocean wave motion, it is necessary that crank keeps the one-way clutch relation with the work flywheel.Shift to the opposite side dead point when crank counterclockwise by the dead point in the stroke of crank drive flywheel acting, the drive flywheel is also done and is rotated counterclockwise.At the reflux course of wave promptly in the backlash stroke in mechanism, the work flywheel since effect of inertia continue to be rotated counterclockwise.This moment, crank can not apply active force to the work flywheel, and in order not consume the inertial force of work flywheel, crank should unclamp with the work flywheel, appoints the work flywheel freely to rotate on the contrary.Crank is that this moment is if there is an irregular billow to attack with another benefit of the such one-way clutch of work flywheel, crank with work flywheel sense of rotation will be opposite, because crank unclamps with the work flywheel, therefore can the normal rotation of flywheel not had a negative impact.
The backlash route problem of mechanism should have several different methods to solve.Here see that in mechanism, to increase by an inertial flywheel Fig. 1 is that example illustrates finishing of mechanism's backlash stroke.Inertial flywheel and crank fixedly link, and it forms flywheel to crank is sandwiched in therebetween with the work flywheel.The effect of inertial flywheel is exactly in mechanism's backlash stroke, the rotatory inertia that utilizes crank in working stroke, to give, drive that crank continues to be rotated counterclockwise after through the dead point and finally by another dead point, and be parked in a suitable location point after making crank by the dead point, thereby make mechanism finish a complete work cycle, and working stroke is ready next time for mechanism begins.Because the irreqularity of ocean wave motion, wave may gush after finishing preceding once the backflow once more, makes mechanism begin the work cycle of a new round.But wave also may not can gush to come at once, and the flywheel of working this moment is owing to effect of inertia continues rotation, and slidercrank mechanism then should be in a kind of of short duration state of rest.This state of rest can make to keep an angle to obtain between its inertial flywheel center of gravity and the crank by the counterweight of high speed inertial flywheel.In backlash stroke way, attack as an irregular billow, crank is rotated as clockwise direction by wave effect meeting.At this moment, flying of inertia also can be done rotation in the same way with crank.No matter but where crank rotate to, after wave was decorporated, the inertial flywheel center of gravity fell naturally, fall minimum point stable after, crank is just in time got ready for new round work cycle again.In addition, the push pedal lower end makes hook-type, and the track of push pedal guide wheel and the slide plate of slide block are oblique to the off-lying sea inclination, and these all help surf and drive push pedal forward in reflux course, thereby makes easier the finishing of backlash stroke of mechanism.
The layout of crank block type wave driving generator as shown in Figure 1 and Figure 2.In order to obtain maximum wave energy, the wave push pedal should be grown as far as possible.Consider again stressed evenly, in a push pedal, can arrange a plurality of slidercrank mechanisms.This programme is to arrange that two mechanisms are the layout that example illustrates the whole generating machine.Two slidercrank mechanism symmetric arrangement, two work flywheels connect relatively and with a transmission shaft.Transmission shaft rotates with two work flywheels, and gear accelerator and generator on it link by gear or driving belt, and the accelerator gear rotates and drive generator for electricity generation with transmission shaft.Two inertial flywheels are placed in the outside of two mechanisms respectively, drive two mechanisms and finish backlash stroke and the new working stroke of preparation.Because the irrgular movement of wave is little to the rotation influence of work flywheel, thereby the proper functioning of generator can guarantee.
2. the rocker type wave drives generator
The rocker type wave drives generator and has compared many identical or similar places with crank-type wave driving generator.Now omit identical or similar portions, only the rocker type wave is driven working principle do one narration of generator prime device.Drive generator with respect to the crank block type wave, it is simpler that the rocker type wave drives the generator prime apparatus structure.As shown in Figure 3, rocking bar 13 is that push pedal is flapped toward the C point by the D point under the promotion of wave, drives crank 3 by connecting rod 4 and is flapped toward the A point by the B point.Crank 3 drive work flywheels are rotated counterclockwise simultaneously.Crank 3 is the one-way clutch relation with the work flywheel, after crank 3 is put the A point by the B point, unclamps with the work flywheel.At this moment, the work flywheel is rotated counterclockwise continuing by effect of inertia, and 3 on crank is return original position under the pulling of rocking bar 13.The return of rocking bar 13 has several different methods, and this programme is that example illustrates it with the return spring method.Be flapped toward the C point by the D point under the promotion of push pedal at wave, it is compacted to promote return spring 14 behind.After wave was decorporated, return spring made push pedal return to original position.Along with one of current chart advances to move back, slotted link mechanism is done rhythmical swing, drives the work flywheel and rotates continuously.Under the drive of work flywheel, generator is output power stably.
Two, the four-bar wave drives the arrangement of generator
In the specific design power station, can be widely by prior theory and experience.For example fourbar linkage is widely used among the various machineries already, and its mature theory and experience can directly be used.The ocean engineering of accumulation theory and experience also are the strong guarantees of Power Plant Design for many years.In conjunction with local wave resource, just constituted the basic design and construction condition of four-bar wave driving generator again.
Measured data shows, can reach every square metre of 30-40 ton at some seashore surfs to the impact force of seashore.Therefore have reason to believe in worldwide coastal area, many places are arranged necessarily, seashore there is day and night with the impact that is being subjected to the wave brute force.Not only pressure is huge for these local waves, and the cycle of motion is also relatively stable, is to settle the four-bar wave to drive the desirable place of generator.
Drive generator for four-bar wave, the size of its driving device each several part should determine according to location, power station wave condition, and and then extrapolates the generator single-machine capacity.Suppose that a crank block type wave drives long 20 meters of generator wave push pedal, high 2 meters, ram travel is 1.5 meters, 5 tons every square metre of location, power station wave effective pressures, and the wave effective exercise cycle is 8 seconds.
The wave total pressure that then push pedal obtained can reach:
P=20 * 2 * 5=200 ton=2000000 newton.
Crank and work flywheel rotating speed:
ω=2II/T=2 * 3.1416 ÷ 8=0.7854 radian per seconds
Therefore the useful horsepower in power station that wave is given is
2356.2 kilowatts of P=ω PL=0.7854 * 2000000 * 1.50=2356200 watt
In the formula: P-wave total pressure ω=crank and work flywheel rotating speed
The useful horsepower in T-wave effective exercise cycle P-power station
The L-ram travel
Both can reach more than 2000 kilowatts at single-machine capacity under the above assumed conditions.
Because it can be buoyancy tank that the four-bar wave drives the pedestal of generator, thereby whole power station can be regarded a ship that shape is special as.The profile of ship is arranged to streamlined, and whole power station facility is except the wave thrust mechanism is exposed to the outside, and remaining part all is enclosed in the hull.Frame protection is also arranged around the wave push pedal.Like this, under general stormy waves condition, the power station can be safe and sound, as usual work.As special natural disasteies such as violent typhoons, the deathtrap can be sailed out of in whole power station in case of necessity, treat disaster return work again more later.Be the reduction cost of building a station, in the experimental power plant construction in the early stage, optional retired barge is a pedestal, settle relevant equipment and facility on it after, barge is fixed on the selected bedding, both can begin generating.
Claims (3)
1, a kind of four-bar wave power generator, comprise and accept wave thrust mechanism, transmission wave thrust mechanism, rotation variable transmission mechanism and generator, it is characterized in that transmitting the wave thrust mechanism and adopt fourbar linkage, in the fourbar linkage push rod (13) one ends with accept the wave thrust mechanism and be connected, the other end is connected with an end of connecting rod (4), the other end of connecting rod (4) is connected with crank (3), the output terminal of crank (3) connects in the one-way clutch mode with work flywheel (2), and there is certain distance in interface and flywheel axle center.
2, four-bar wave power generator according to claim 1 is characterized in that fourbar linkage is the crank block type structure, and the other end of push rod (13) is connected with connecting rod (4) by slide block (5).
3, four-bar wave power generator according to claim 1, it is characterized in that fourbar linkage is the rocker type structure, push rod (13) plays the rocking bar effect, it is served as by the wave thrust plate, its bottom is fixed, the other end is connected with connecting rod (4), and in a side of push rod (13), promptly the wave thrust plate has Returnning spring (14) behind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99116355A CN1103000C (en) | 1999-02-12 | 1999-02-12 | Four-bar wave power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99116355A CN1103000C (en) | 1999-02-12 | 1999-02-12 | Four-bar wave power generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1263209A CN1263209A (en) | 2000-08-16 |
| CN1103000C true CN1103000C (en) | 2003-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN99116355A Expired - Fee Related CN1103000C (en) | 1999-02-12 | 1999-02-12 | Four-bar wave power generator |
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1999
- 1999-02-12 CN CN99116355A patent/CN1103000C/en not_active Expired - Fee Related
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| US3911287A (en) * | 1974-03-13 | 1975-10-07 | Robert Lee Neville | Wave driven power generators |
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| CN1263209A (en) | 2000-08-16 |
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