CN111779618A - Shore-based floater type wave energy collecting device with tidal range adjusting function - Google Patents
Shore-based floater type wave energy collecting device with tidal range adjusting function Download PDFInfo
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- CN111779618A CN111779618A CN202010846686.1A CN202010846686A CN111779618A CN 111779618 A CN111779618 A CN 111779618A CN 202010846686 A CN202010846686 A CN 202010846686A CN 111779618 A CN111779618 A CN 111779618A
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- tidal range
- amplitude
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- counterweight
- controller
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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"
- F03B13/20—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" wherein both members, i.e. wom and rem are movable relative to the sea bed or shore
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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
- F03B15/00—Controlling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Abstract
The invention discloses a shore-based float-type wave energy collecting device with a tidal range adjusting function, and aims to provide a wave energy collecting device capable of guaranteeing efficient and reliable transmission of fluctuation kinetic energy in a tidal change process. The device comprises a fixed beam, a movable beam, a pulley block consisting of a plurality of fixed pulleys, a power generation input transmission mechanism, a counterweight mechanism, a fixed beam support, a movable beam lifting driving mechanism and a tidal range adjusting control unit. The floater hauling cable penetrates through a plurality of fixed pulleys forming the pulley block in sequence and then is connected with one end of a chain, the chain is meshed with the chain wheel, and the other end of the chain is connected with one end of the counterweight hauling cable. The tidal range adjusting and controlling unit comprises a tidal range adjusting controller and a balancing weight amplitude collecting controller, the tidal range adjusting controller controls the moving beam to ascend and descend, the length of the floater traction rope is adjusted, the floater traction rope keeps tension, efficient and reliable energy transmission of fluctuation kinetic energy is achieved, and stable operation of the power generation system in the tidal range changing process is guaranteed.
Description
Technical Field
The invention relates to the technical field of sea wave power generation, in particular to a shore-based floater type wave energy collecting device with a tidal range adjusting function.
Background
The sea wave energy is a clean energy, the sea water is fluctuated under the action of wind, the fluctuation kinetic energy of the sea waves can be converted into mechanical energy for rotating the gear box through the floater floating on the sea surface, and finally the power is generated through the generator.
Currently, research on wave power generation technology is in the beginning stage. Most of the wave power stations are floating wave power generating ships floating in deep sea, and the shore-based power station also belongs to a blank stage. An advantage of a shore-based wave power station is that the generated electrical energy can be used directly on site, on shore or on land. One problem that must be solved, however, is the variation in tidal ranges. Since tidal ranges vary greatly over the sea surface, especially in the east ocean, tidal ranges can vary as high as 7-8 meters in one morning. Therefore, the hauling cable connecting the float and the gear box is of great importance for the transfer of the heave kinetic energy. At present, because the length of a traction rope connecting a floater and a gear box is not adjustable in the tidal change process, the fluctuation kinetic energy of the floater cannot be effectively and reliably transmitted, the fluctuation kinetic energy conversion of the floater is influenced, the stability of wave power generation is influenced, and the wave power generation efficiency is reduced.
Disclosure of Invention
The invention aims to provide a shore-based float type wave energy collecting device with a self-adaptive tidal range adjusting function, which can ensure efficient and reliable transmission of fluctuation kinetic energy in a tidal change process, aiming at the technical defects in the prior art.
The technical scheme adopted for realizing the purpose of the invention is as follows:
a shore-based floater type wave energy collecting device with a tidal range adjusting function comprises a fixed beam, a movable beam, a pulley block consisting of a plurality of fixed pulleys, a power generation input transmission mechanism, a counterweight mechanism, a fixed beam bracket, a movable beam lifting driving mechanism and a tidal range adjusting control unit; the power generation input transmission mechanism consists of a chain and a chain wheel, and the counterweight mechanism consists of a counterweight block, a counterweight transmission fixed pulley and a counterweight block traction rope; the fixed pulleys are respectively arranged on the fixed beam and the movable beam, the floater traction rope sequentially penetrates through the fixed pulleys forming the pulley block and then is connected with one end of the chain, the chain is meshed with the chain wheel, the other end of the chain is connected with one end of the counterweight traction rope, and the other end of the counterweight traction rope sequentially penetrates through the counterweight transmission fixed pulley and the counterweight block and then is fixed; the chain wheel is arranged on an input shaft of the power generation mechanical equipment; the fixed beam is fixed through the fixed beam bracket; the movable beam lifting driving mechanism drives the movable beam to lift; the tidal range adjustment control unit comprises a tidal range adjustment controller and a balancing weight amplitude acquisition controller, wherein an amplitude control signal output end of the balancing weight amplitude acquisition controller is connected with an amplitude signal input end of the tidal range adjustment controller, a control signal output end of the tidal range adjustment controller is connected with a control signal input end of a movable beam lifting driving mechanism to control lifting of the movable beam, the relative position of the fixed beam and the movable beam is adjusted, and therefore the pulley block is adjusted to be accommodated by the length of the float traction rope, and the float traction rope keeps tension.
The counterweight block amplitude acquisition controller comprises an amplitude controller and a counterweight block displacement sensor arranged on the counterweight block, the output end of the counterweight block displacement sensor is connected with the displacement signal input end of the amplitude controller, and the amplitude control signal output end of the amplitude controller is connected with the amplitude signal input end of the tidal range adjustment controller; and the amplitude controller judges whether the weight block exceeds an amplitude preset value according to the displacement of the weight block displacement sensor, and outputs an amplitude control signal to the tidal range adjustment controller when the amplitude of the weight block exceeds the preset value.
The signal output ends of the movable beam upper limit position collector and the movable beam lower limit position collector are connected with the movable beam position signal input end of the amplitude controller; and the amplitude controller judges that the movable beam exceeds the upper limit or the lower limit according to the information collected by the movable beam upper limit position collector and the movable beam lower limit position collector, outputs a control signal to the tidal range adjustment controller and stops the movable beam lifting driving mechanism from acting.
The movable beam lifting driving mechanism comprises a lifting driving motor, a protractor and two groups of lifting transmission units; an output shaft of the lifting driving motor is connected with the input end of the angle divider through a main shaft coupler, and each output end of the angle divider is respectively connected with one group of lifting transmission units; the lifting transmission units comprise sub-couplers, lifting transmission mechanisms, lead screws and nuts, the nuts of each group of lifting transmission units are respectively and fixedly connected with the movable beam, and the lead screws are in threaded connection with the nuts; the sub-coupler, the lifting transmission mechanism and the lead screw are sequentially connected; and the sub coupling in each group of lifting transmission units is connected with the output end of the angle divider.
The floater traction rope enters from the first fixed pulley on the fixed beam, sequentially and alternately penetrates through the fixed beam and the plurality of fixed pulleys on the movable beam, and finally is led out from the last fixed pulley on the fixed beam and connected with the chain.
The upper limit position collector of the movable beam adopts an upper limit sensor of the movable beam, and the lower limit position collector of the movable beam adopts a lower limit sensor of the movable beam.
The movable beam position collector is connected with the movable beam position instrument.
The lifting transmission mechanism is a screw rod lifter.
Compared with the prior art, the invention has the beneficial effects that:
the shore-based floater type wave energy collecting device with the self-adaptive tidal range adjusting function can adjust the length of the traction rope accommodated by the pulley block transmission mechanism by adjusting the position of the movable beam in the tidal change process, thereby ensuring the tension of the floater traction rope, realizing efficient and reliable energy transmission of fluctuation kinetic energy, solving the technical problem of self-adaptive tidal water level change, being beneficial to ensuring the stable operation of a sea wave power generation system, being beneficial to improving the power generation efficiency and ensuring the realization of a shore-based sea wave power generation scheme.
Drawings
Fig. 1 is a schematic structural diagram of a shore-based float-type wave energy collecting device with a tidal range adjusting function.
Detailed Description
The invention is described in detail below with reference to the figures and specific examples.
The structure schematic diagram of the shore-based floater type wave energy collecting device with the tidal range adjusting function is shown in figure 1, and the shore-based floater type wave energy collecting device comprises a fixed beam 2, a movable beam 4, a pulley block consisting of a plurality of fixed pulleys 3, a power generation input transmission mechanism, a counterweight mechanism, a fixed beam support, a movable beam lifting driving mechanism and a tidal range adjusting control unit. The power generation input transmission mechanism consists of a chain 7 and a chain wheel 8, and the counterweight mechanism consists of a counterweight block 12, a counterweight transmission fixed pulley 5 and a counterweight block traction rope 6. A plurality of fixed pulley 3 install respectively in on fixed beam 2 and the walking beam 4, float haulage rope 1 pass in proper order and constitute behind a plurality of fixed pulley 3 of assembly pulley with 7 one end of chain are connected, chain 7 with sprocket 8 meshes, the chain 7 other end with 6 one end of counter weight haulage rope is connected, the other end of counter weight haulage rope 6 passes in proper order counter weight transmission fixed pulley 5 reaches the 12 after-fixing of balancing weight. The chain wheel 8 is arranged on an input shaft of the power generation mechanical equipment. In this embodiment, the chain wheel 8 is installed on an input shaft of the gear box 9, and the chain wheel 8 drives the gear transmission mechanism to output to the generator 10 for power generation. The fixed beam 2 is fixed by the fixed beam bracket. The movable beam lifting driving mechanism drives the movable beam 4 to lift. The tidal range adjustment control unit comprises a tidal range adjustment controller and a balancing weight amplitude acquisition controller, wherein an amplitude control signal output end of the balancing weight amplitude acquisition controller is connected with an amplitude signal input end of the tidal range adjustment controller, a control signal output end of the tidal range adjustment controller is connected with a control signal input end of a movable beam lifting driving mechanism to control lifting of the movable beam, the relative position of the fixed beam and the movable beam is adjusted, and therefore the pulley block is adjusted to be accommodated by the length of the float traction rope, and the float traction rope keeps tension.
In this embodiment, the controller is gathered to balancing weight amplitude includes the amplitude controller and install in balancing weight displacement sensor 20 on the balancing weight, balancing weight displacement sensor's output with the displacement signal input part of amplitude controller is connected, the amplitude control signal output part of amplitude controller with the amplitude signal input part of tidal range adjustment controller is connected. And the amplitude controller judges whether the weight block exceeds an amplitude preset value according to the displacement of the weight block displacement sensor, and outputs an amplitude control signal to the tidal range adjustment controller when the amplitude of the weight block exceeds the preset value.
In order to prevent the movement range of the movable beam 4 from exceeding a preset value, a movable beam upper limit position collector and a movable beam lower limit position collector are respectively arranged at the top and the bottom of a fixed beam bracket, and the signal output ends of the movable beam upper limit position collector and the movable beam lower limit position collector are connected with the movable beam position signal input end of the amplitude controller; and the amplitude controller judges that the movable beam exceeds the upper limit or the lower limit according to the information collected by the movable beam upper limit position collector and the movable beam lower limit position collector, outputs a control signal to the tidal range adjustment controller and stops the movable beam lifting driving mechanism from acting.
In this embodiment, the movable beam lifting driving mechanism includes a lifting driving motor 17, a protractor 15, and two sets of lifting transmission units. An output shaft of the lifting driving motor 17 is connected with an input end of the angle resolver 15 through a main coupler 16, and each output end of the angle resolver 15 is connected with one group of lifting transmission units respectively. The lifting transmission unit comprises a sub-coupler 14, a lifting transmission mechanism 13, a lead screw 18 and a nut 19, the nut 19 of each lifting transmission unit is fixedly connected with the movable beam 4, and the lead screw 18 is in threaded connection with the nut 19. The sub-coupler 14, the lifting transmission mechanism 13 and the lead screw 18 are connected in sequence. The sub coupling 14 in each set of the lifting transmission units is connected with the output end of the angle divider 15. The rotation of the movable beam lifting driving motor 17 drives the main coupling 16 to rotate. The angle resolver 15 divides the rotation from the traveling beam elevation driving motor 17 transmitted through the main coupling 16 into rotation of the left and right output shafts. The left output shaft and the right output shaft of the angle divider 15 are respectively connected with a group of lifting transmission units. The sub coupling 14 in each group of lifting transmission mechanism is connected to the output shaft at one side of the angle resolver 15 and then connected to the lifting transmission mechanism 13, the lifting transmission mechanism 13 drives the lead screw 18 to rotate, and the nut 19 on the lead screw 18 is fixed on the movable beam 4. When the movable beam lifting driving motor 17 rotates forward or backward, the screw 18 rotates clockwise or counterclockwise, thereby moving the movable beam 4 up and down. In this embodiment, the lifting transmission mechanism 13 is a screw lifter.
In this embodiment, the way that the float haulage rope passes through the assembly pulley does: the floater traction rope 1 enters from the first fixed pulley on the fixed beam 2, sequentially and alternately penetrates through the fixed beam and the plurality of fixed pulleys on the movable beam, and finally is led out from the last fixed pulley on the fixed beam and connected with the chain 7.
In order to facilitate the checking of the position of the movable beam 4, a movable beam position collector is arranged on the fixed beam support and is connected with a movable beam position instrument.
In this embodiment, walking beam position collector adopts position sensor, walking beam upper limit position collector adopts walking beam upper limit sensor, walking beam lower limit position collector adopts walking beam lower limit sensor.
The floater traction rope 1 connected with the floater 11 is coiled between the fixed beam and the movable beam through the pulley blocks of the fixed beam 2 and the movable beam 4. Finally, the chain is wound out of a fixed pulley on the fixed beam and then connected with a chain 7. The chain 7 is connected with the counterweight traction rope 6 after being occluded by the chain wheel 8, and the counterweight traction rope 6 is connected with the counterweight block 12. The floater traction rope 1, the chain 7 and the balancing weight traction rope 6 are connected into a rope chain with fixed length. When the float 11 makes up and down heave movement on the sea surface, it passes through this rope chain, eventually resulting in heave movement of the counterweight 12. Since the entire tether length is fixed, the amplitude of movement of the weight 12 is equal to the amplitude of movement of the float 11. When the float moves up and down, it pulls the reciprocating motion of the chain 7, causing the sprocket 8 on the gearbox, which engages the chain, to rotate. Finally, the gear ratio of the gear box is changed, and the gear ratio is converted into the rotation of the generator to generate electricity.
Typically, the weight is moved up and down within the range of the center point of the weight frame. When the tide rises, the position of the float 11 rises because the total length of the float traction rope 1, the chain 7 and the counterweight traction rope 6 is constant, and therefore, the center of movement of the counterweight 12 is lowered. The balancing weight displacement sensor inputs detected balancing weight displacement signals to the amplitude controller, the amplitude controller judges whether the balancing weight displacement exceeds a balancing weight displacement set value or not, when the offset of the central position of the balancing weight is larger than the balancing weight displacement set value, the amplitude controller sends a command to the tidal range adjustment controller, the shifting beam lifting driving motor rotates forwards for a certain time, the shifting beam is pulled to descend for a certain distance, the floater hauling rope is received more, the receiving amount of the floater hauling rope is the same as the displacement amount of the balancing weight deviating from the central point, therefore, the balancing weight returns to the middle position of the balancing weight frame again, and the tension of the floater hauling rope is enabled to be unchanged. In the case of a tide, the position of the float 11 is lowered and the center of motion of the weight is raised. The balancing weight displacement sensor inputs detected balancing weight displacement signals to the amplitude controller, the amplitude controller judges whether the balancing weight displacement exceeds a balancing weight displacement set value or not, when the offset of the central position of the balancing weight is larger than the balancing weight displacement set value, the amplitude controller sends a command to the tidal range adjustment controller, the shifting beam lifting driving motor is enabled to rotate reversely for a certain time, the shifting beam is pulled to rise for a certain distance, the floater haulage rope is released, the releasing amount of the floater haulage rope is the same as the displacement amount of the balancing weight deviating from the central point, and therefore the balancing weight returns to the middle position of the balancing weight frame again, and the tension of the floater haulage rope is enabled. According to the control principle, no matter how the tide changes, the counterweight block can always be kept vibrating in the middle area by releasing or storing the length of the rope between the fixed beam and the movable beam, the tension of the floater traction rope is always kept, and the sea wave kinetic energy collected by the floater is always effectively transmitted to the gear box and the generator in time.
The shore-based floater type wave energy collecting device with the tidal range adjusting function realizes the change of the length of the rope contained by the fixed beam and the movable beam by adjusting the position of the movable beam, thereby ensuring the tension of the floater traction rope, realizing the efficient and reliable energy transmission of fluctuation kinetic energy, ensuring the basic stability of the motion center of the balancing weight, ensuring the basic stability of the relative position of the chain and the chain wheel, and finally realizing the stable operation of a power generation system in the tidal range changing process.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A shore-based floater type wave energy collecting device with a tidal range adjusting function is characterized by comprising a fixed beam, a movable beam, a pulley block consisting of a plurality of fixed pulleys, a power generation input transmission mechanism, a counterweight mechanism, a fixed beam bracket, a movable beam lifting driving mechanism and a tidal range adjusting control unit; the power generation input transmission mechanism consists of a chain and a chain wheel, and the counterweight mechanism consists of a counterweight block, a counterweight transmission fixed pulley and a counterweight block traction rope; the fixed pulleys are respectively arranged on the fixed beam and the movable beam, the floater traction rope sequentially penetrates through the fixed pulleys forming the pulley block and then is connected with one end of the chain, the chain is meshed with the chain wheel, the other end of the chain is connected with one end of the counterweight traction rope, and the other end of the counterweight traction rope sequentially penetrates through the counterweight transmission fixed pulley and the counterweight block and then is fixed; the chain wheel is arranged on an input shaft of the power generation mechanical equipment; the fixed beam is fixed through the fixed beam bracket; the movable beam lifting driving mechanism drives the movable beam to lift; the tidal range adjustment control unit comprises a tidal range adjustment controller and a balancing weight amplitude acquisition controller, wherein an amplitude control signal output end of the balancing weight amplitude acquisition controller is connected with an amplitude signal input end of the tidal range adjustment controller, a control signal output end of the tidal range adjustment controller is connected with a control signal input end of a movable beam lifting driving mechanism to control lifting of the movable beam, the relative position of the fixed beam and the movable beam is adjusted, and therefore the pulley block is adjusted to be accommodated by the length of the float traction rope, and the float traction rope keeps tension.
2. The shore-based float-type wave energy collecting device with tidal range adjusting function according to claim 1, wherein the counterweight amplitude collecting controller comprises an amplitude controller and a counterweight displacement sensor mounted on the counterweight, an output end of the counterweight displacement sensor is connected with a displacement signal input end of the amplitude controller, and an amplitude control signal output end of the amplitude controller is connected with an amplitude signal input end of the tidal range adjusting controller; and the amplitude controller judges whether the weight block exceeds an amplitude preset value according to the displacement of the weight block displacement sensor, and outputs an amplitude control signal to the tidal range adjustment controller when the amplitude of the weight block exceeds the preset value.
3. The shore-based float-type wave energy collecting device with the tidal range regulating function according to claim 2, further comprising a traveling beam upper limit position collector and a traveling beam lower limit position collector, wherein signal output ends of the traveling beam upper limit position collector and the traveling beam lower limit position collector are connected with a traveling beam position signal input end of the amplitude controller; and the amplitude controller judges that the movable beam exceeds the upper limit or the lower limit according to the information collected by the movable beam upper limit position collector and the movable beam lower limit position collector, outputs a control signal to the tidal range adjustment controller and stops the movable beam lifting driving mechanism from acting.
4. The shore-based float-type wave energy collecting device with the tidal range adjusting function according to claim 1 or 2, wherein the walking beam lifting driving mechanism comprises a lifting driving motor, a protractor and two sets of lifting transmission units; an output shaft of the lifting driving motor is connected with the input end of the angle divider through a main shaft coupler, and each output end of the angle divider is respectively connected with one group of lifting transmission units; the lifting transmission units comprise sub-couplers, lifting transmission mechanisms, lead screws and nuts, the nuts of each group of lifting transmission units are respectively and fixedly connected with the movable beam, and the lead screws are in threaded connection with the nuts; the sub-coupler, the lifting transmission mechanism and the lead screw are sequentially connected; and the sub coupling in each group of lifting transmission units is connected with the output end of the angle divider.
5. The shore-based floater type wave energy collecting device with the tidal range adjusting function as claimed in claim 1 or 2, wherein the floater pulling rope enters from the fixed pulley on the fixed beam, sequentially and alternately passes through the fixed pulleys on the fixed beam and the movable beam, and finally is led out from the last fixed pulley on the fixed beam and connected with the chain.
6. The shore-based float-type wave energy collecting device with the tidal range regulating function according to claim 3, wherein the traveling beam upper limit position collector adopts a traveling beam upper limit sensor, and the traveling beam lower limit position collector adopts a traveling beam lower limit sensor.
7. The shore-based float-type wave energy collecting device with the tidal range regulating function according to claim 3, further comprising a walking beam position collector connected with the walking beam position instrument.
8. The shore-based float-type wave energy collecting device with tidal range regulating function according to claim 4, wherein the lifting transmission mechanism is a lead screw lifter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010846686.1A CN111779618A (en) | 2020-08-21 | 2020-08-21 | Shore-based floater type wave energy collecting device with tidal range adjusting function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010846686.1A CN111779618A (en) | 2020-08-21 | 2020-08-21 | Shore-based floater type wave energy collecting device with tidal range adjusting function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855423A (en) * | 2021-01-12 | 2021-05-28 | 浙江海洋大学 | Wave energy and tidal current energy combined power generation device |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855423A (en) * | 2021-01-12 | 2021-05-28 | 浙江海洋大学 | Wave energy and tidal current energy combined power generation device |
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