CN112065641B - Hydraulic energy storage power generation type anchoring system for wave power generation device - Google Patents
Hydraulic energy storage power generation type anchoring system for wave power generation device Download PDFInfo
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- CN112065641B CN112065641B CN202010778506.0A CN202010778506A CN112065641B CN 112065641 B CN112065641 B CN 112065641B CN 202010778506 A CN202010778506 A CN 202010778506A CN 112065641 B CN112065641 B CN 112065641B
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B22/00—Buoys
- B63B22/04—Fixations or other anchoring arrangements
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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
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and 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
- Y02E10/20—Hydro energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a hydraulic energy storage power generation type anchoring system for a wave power generation device, which comprises an anchor, an anchor chain, an anchor machine, a chain stopper, a cable, a hydraulic cylinder, an energy accumulator, an oil tank and a hydraulic power generation system, wherein the anchor chain is arranged on the anchor machine; the anchor machine and the chain stopper are arranged at the top end of the wave energy power generation device, one end of the anchor chain is connected with the anchor, and the other end of the anchor chain is arranged on the anchor machine and is connected with the cable; the hydraulic cylinder, the energy accumulator, the oil tank and the hydraulic power generation system are arranged in a bottom cabin of the wave power generation device, the other end of the mooring rope is connected with a piston rod of the hydraulic cylinder, a rod cavity of the hydraulic cylinder is connected to the energy accumulator through a one-way valve on one way, the oil tank is connected on one way through the one-way valve, and a rodless cavity of the hydraulic cylinder is directly communicated with air in the bottom cabin. The hydraulic energy storage power generation type anchoring system can realize safe and reliable operation of the wave power generation device under severe sea conditions or typhoon conditions, and has the advantages of simple structure, low cost, simple and convenient release and easy operation.
Description
Technical Field
The invention relates to the technical field of ocean platform anchoring and wave energy power generation, in particular to a hydraulic energy storage power generation type anchoring system for a wave energy power generation device.
Background
Wave energy power generation devices usually exist in the ocean in a semi-submersible type floater mode, and different from common ocean floating platforms, the ocean floating platforms place main working platforms above the wave surface, and the design of a vertical pipe is adopted underwater, so that wave impact is avoided. The wave energy device is designed in a positive direction to face waves, and due to the characteristic, the wave impact of the wave energy device in the waves is far greater than that of a ship and an ocean platform. For offshore structures with the same displacement tonnage, the mooring stress of the wave energy device is huge due to the fact that the wave drag force of the wave energy device in a large-wave extreme sea condition is much larger than that of a ship and an ocean platform, and the mooring stress is large, namely the main reason that many wave energy devices at home and abroad are difficult to resist typhoon and break anchors is caused.
The wave power generation device is under the action of first-order wave force and second-order wave force in waves. The second-order force wave force is composed of a constant term, a sum term and a difference frequency term, the constant force of the second-order force in the horizontal direction is generally called wave average drifting force, and the difference frequency term is called low-frequency slow drifting force. When facing the second-order difference frequency long-period wave, the wave-absorbing floating body and the underwater appendage of the device do not respond to the wave and drift for a long distance integrally. The second-order low-frequency force is huge in energy generated by applying work to the long-distance motion of the wave energy power generation device, and the energy is finally absorbed through the buffering of the mooring system.
The conventional wave power generation device anchoring system is mainly a catenary mooring system, and wave low-frequency drift force is buffered mainly through gravitational potential energy of catenary materials and integral stretching of catenary. And in the catenary mooring system, under severe sea conditions such as typhoon and the like, the wave low-frequency drift force is increased, the catenary can be gradually stretched and tends to be straightened and tightened, and at the moment, once the wave energy device continuously retreats along with waves, a catenary anchor chain is easily broken or anchored. The first is to increase the strength of the anchoring system, mainly to increase the strength of the anchor chain, to increase the chain diameter of the anchor chain, to improve the structure of the anchor and to increase the weight of the anchor to resist the severe sea conditions, which can improve the safety of the anchoring system to a certain extent, but increases the cost of the anchoring system; the second method is that a sinking block and a buoy are added on the basis of the catenary mooring system, so that the buffering and energy absorbing capacity of the whole mooring system is improved, but the difficulty of the launching engineering of the mooring system is increased; the third type is a superelastic energy storage mooring system, a superelastic mooring rope is made of a material with a superstrong elastic deformation capacity and a strong tensile resistance, the system buffers accumulated wave dragging force through elastic deformation to do work on device drifting, and the mooring system has higher reliability than the former two types, but has higher cost and larger throwing difficulty. Therefore, how to enable the wave energy anchoring system to safely and reliably operate under severe sea conditions and even typhoon conditions is a difficult problem in the field of wave energy devices, and the wave energy anchoring system is simple to operate and low in cost.
Disclosure of Invention
The invention aims to provide a hydraulic energy storage power generation type anchoring system for a wave energy power generation device, which can realize safe and reliable operation of the wave energy power generation device under severe sea conditions or typhoon conditions, and has the advantages of simple structure, low cost, simple and convenient release and easy operation.
In order to achieve the purpose, the invention adopts the technical scheme that:
a hydraulic energy storage power generation type anchoring system for a wave energy power generation device comprises an anchor, an anchor chain, an anchor machine, a chain stopper, a mooring rope, a hydraulic cylinder, an energy accumulator, an oil tank and a hydraulic power generation system; the anchor machine and the chain stopper are arranged at the top end of the wave energy power generation device, one end of the anchor chain is connected with the anchor, and the other end of the anchor chain is arranged on the anchor machine and is connected with the cable; the hydraulic cylinder, the energy accumulator, the oil tank and the hydraulic power generation system are arranged in a bottom cabin of the wave power generation device, the other end of the mooring rope is connected with a piston rod of the hydraulic cylinder, a rod cavity of the hydraulic cylinder is connected to the energy accumulator through a one-way valve, one way of the rod cavity is connected with the oil tank through the one-way valve, and a rodless cavity of the hydraulic cylinder is directly communicated with air in the bottom cabin; when the hydraulic cylinder is subjected to anchoring force, the piston rod of the hydraulic cylinder moves, oil in the rod cavity of the hydraulic cylinder is pumped into the energy accumulator, the energy accumulator accumulates certain hydraulic oil and then releases the hydraulic oil to drive the hydraulic power generation system to generate power, when the hydraulic cylinder is not subjected to anchoring force, the piston rod of the hydraulic cylinder resets, and the rod cavity of the hydraulic cylinder absorbs oil from the oil tank.
As an improvement of the invention, the hydraulic cylinder is horizontally arranged in a bottom chamber of the wave power generation device, the bottom chamber is also provided with a fixed pulley, the other end of the cable is connected with a piston rod of the hydraulic cylinder by passing through the fixed pulley, and a return spring for returning the piston of the hydraulic cylinder is arranged in a rodless cavity of the hydraulic cylinder.
As an improvement of the invention, the anti-collision device also comprises an anti-collision structure which is used for controlling the stroke of the piston rod of the hydraulic cylinder and preventing the hydraulic cylinder from being damaged.
Further, the anticollision structure include the triangular support frame that sets up relative pneumatic cylinder piston rod, the terminal surface that triangular support frame and pneumatic cylinder piston rod are relative sets up the anticollision rubber piece respectively, the terminal surface that the triangular support frame set up the anticollision rubber piece still is provided with the through-hole that supplies the hawser to pass.
Preferably, a disc is arranged at the end part of the piston rod of the hydraulic cylinder, the cable is connected to the center of the disc, and the anti-collision rubber blocks are arranged on the disc at intervals.
Preferably, the end face of the triangular support frame is also a disc, and the anti-collision rubber blocks are arranged on the disc at intervals.
Preferably, the cable is a steel cable.
Preferably, the accumulator is an accumulator group.
Compared with the prior art, the invention has the beneficial effects that:
1. compared with the conventional anchoring system, the hydraulic energy storage power generation anchoring system provided by the invention is additionally provided with the hydraulic energy storage system, the energy storage capacity of the anchoring system is increased, and the risk that the anchoring system is damaged under severe sea conditions is reduced.
2. Compared with other anchoring systems with energy storage function, the hydraulic energy storage power generation anchoring system has simple structure and convenient release, only adds a hydraulic cylinder, an energy accumulator and an auxiliary supporting structure at the bottom of the cabin of the wave energy device, and the part of the anchoring system released in the sea is the same as that of the ordinary anchoring system.
3. Compared with other anchoring systems, the hydraulic energy storage power generation anchoring system provided by the invention is additionally provided with a hydraulic power generation function, and the work done by huge and destructive anchoring force is converted into electric energy through hydraulic systems such as a hydraulic cylinder and an energy accumulator.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a hydraulic energy-storage power-generation anchoring system of the embodiment;
FIG. 2 is a schematic diagram of a hydraulic energy-storing and power-generating portion of the hydraulic energy-storing and power-generating mooring system of the present embodiment;
FIG. 3 is a working state diagram of the hydraulic energy-storage power-generation anchoring system in the embodiment under normal wave conditions;
FIG. 4 is a diagram of the working state of the hydraulic energy-storage power-generation anchoring system in the embodiment under the condition of large waves;
FIG. 5 is a diagram illustrating the operation of the hydraulic energy-storage power-generation mooring system of the present embodiment under heavy waves;
FIG. 6 is a diagram of the working state of the hydraulic energy-storage power-generation mooring system in the embodiment under extreme wave conditions;
description of reference numerals: 1-anchor; 2-anchor chain; 3-chain stopper; 4-an anchor machine; 5-fixed pulley; 6-a triangular support frame; 7-an anti-collision rubber block; 8-a hydraulic cylinder; 9-a hydraulic cylinder support; 10-a return spring; 11-installing a support seat on the hydraulic cylinder; 12-a steel wire rope; 13-a one-way valve; 14-hydraulic lines; 15-accumulator group; 16-a hydraulic oil tank; 17-a hydraulic power generation system; 18-semi-submersible wave power generation device.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 and fig. 2, in the hydraulic energy storage and power generation anchoring system for a wave energy power generation device of the present embodiment, a semi-submersible wave energy power generation device 18 is adopted as the wave energy power generation device, and the hydraulic energy storage and power generation anchoring system mainly comprises a conventional anchoring system, a hydraulic buffering power generation system and a limit anti-collision structure.
The conventional anchoring system comprises an anchor 1, an anchor chain 2, a chain stopper 3 and an anchor machine 4, and the specific structures are all conventional and are not described herein again. The anchor machine 4 and the chain stopper 3 are installed at the top end of the semi-submersible wave energy power generation device 18, one end of the anchor chain 2 is connected with the anchor 1, the other end of the anchor chain penetrates through the chain stopper 3 and is installed on the anchor machine 4 and is connected with the steel wire cable 12, conventional anchor breaking, anchor chain retraction and release and other work can be carried out, and under the ordinary wave condition, the anchor machine 4, the anchor chain 2 and the chain stopper 3 can be applied.
The hydraulic buffer power generation system comprises a hydraulic cylinder 8, an accumulator group 15, a hydraulic oil tank 16 and a hydraulic power generation system 17. The hydraulic cylinder 8 is horizontally arranged, and is arranged in a bottom cabin of the semi-submersible type wave power generation device 18 through a hydraulic cylinder support 9 and a hydraulic cylinder mounting support 11, a rod cavity of the hydraulic cylinder 8 is respectively connected with an energy accumulator group 15 and a hydraulic oil tank 16 through a hydraulic pipeline 14, and the corresponding pipelines are respectively provided with a one-way valve 13. The accumulator bank 15 is also connected to a hydraulic power generation system 17 via a hydraulic line 14. When the hydraulic cylinder 8 is subjected to anchoring force, the piston rod moves leftwards, oil in a rod cavity of the hydraulic cylinder is pumped into the energy accumulator group 15, and the energy accumulator group 15 accumulates certain hydraulic oil and then releases the hydraulic oil to drive the hydraulic power generation system 17 to generate power. The rodless cavity of the hydraulic cylinder 8 is directly communicated with the air in the bottom cabin, and the return spring 10 is arranged in the rodless cavity, so that the piston rod of the hydraulic cylinder 8 can automatically return to the right end of the hydraulic cylinder 8 under the condition that anchoring force is not applied to the piston rod, and the rod cavity of the hydraulic cylinder 8 absorbs oil from the hydraulic oil tank 16.
The steel wire cable 12 and the fixed pulley 5 are used for connecting a conventional anchoring system and a hydraulic buffering power generation system. The fixed pulley 5 is arranged at the leftmost side of the bottom cabin, and the other end of the steel wire cable 12 passes through the fixed pulley 5 and penetrates through the limit anti-collision structure to be connected with a piston rod of the hydraulic cylinder 8.
Wherein, limit anticollision structure is including setting up the triangular support frame 6 in the bottom cabin, is located the left side of pneumatic cylinder 8, and its terminal surface towards pneumatic cylinder 8 is a disc, installs crashproof rubber piece 7 on it, and pneumatic cylinder 8's piston rod sets up towards the left side, and a disc is also welded to its tip, installs crashproof rubber piece 7 on it equally. When the device is subjected to the anchoring force of the limit, and the piston rod of the hydraulic cylinder 8 is pulled to the limit of the quick approaching stroke, the 2 anti-collision rubber blocks 7 are contacted, so that the hydraulic cylinder 8 is prevented from being damaged. A small hole is formed in the center of a disc of the triangular support frame 6, so that a steel wire cable 12 can conveniently penetrate through the small hole, and the small hole is further connected with the hydraulic cylinder 8.
The working process of the present invention is explained below:
under ordinary wave conditions, the anchoring force borne by the semi-submersible wave energy power generation device 18 is small, the anchoring force can be resisted only by using a conventional anchoring system, as shown in fig. 3, at the moment, the anchor chain 2 is still in a catenary state, the chain stopper 3 and the anchor machine 4 are both in a normal working state, the anchor chain 2 is loose, the catenary is slightly elongated and then returns to the original state under the action of waves, and the steel wire cable 12 connected with the other end of the anchor chain 2 is not subjected to the anchoring force at the moment.
When the wave condition is gradually increased and the waves are in a larger wave condition, the anchoring force borne by the semi-submersible wave energy power generation device 18 is increased, the anchor chain 2 gradually tends to be tightened under the action of the waves, but is not completely tightened, the semi-submersible wave energy power generation device 18 gradually retreats and returns to the original state again in a wave period, as shown in fig. 4, at the moment, the chain stopper 3 and the anchor machine 4 are still in a normal working state, and the steel wire cable 12 connected with the other end of the anchor chain 2 is still not subjected to the anchoring force.
When the wave condition continues to increase, the wave length is very long, under the condition of heavy waves, the half period of the waves exceeds the length of the released anchor chain, the anchor chain 2 is often in a tight state under the action of the waves, at the moment, the chain stopper 3 needs to be opened to release all the anchor chains 2, under the action of the first half period of the waves, because the chain stopper 3 does not prevent the steel wire cable 12 connected with one end of the anchor chain 2 and the anchor chain 2 from bearing the same anchoring force, the piston rod of the hydraulic cylinder 8 connected with the steel wire cable 12 moves leftwards but does not move to the limit position, namely, the anti-collision rubber block 7 at the piston rod end of the hydraulic cylinder 8 is not contacted with the anti-collision rubber block 7 of the triangular support frame 6, as shown in fig. 4, the hydraulic oil in the rod cavity of the hydraulic cylinder 8 is pumped into the accumulator group 15 by moving the piston rod leftwards, the pressure of the accumulator group 15 is higher, the reaction force of the hydraulic cylinder 8 resisting the anchoring system is equal to the product of the effective cross-sectional area of the hydraulic cylinder 8 and the pressure of the accumulator group 15, namely the reaction force resisting the anchoring system is larger, when the hydraulic cylinder 8 is in the second half period of the wave, the anchor chain 2 and the steel wire cable 12 are not subjected to the anchoring force, the anchor chain is restored to the catenary state, at the moment, the piston rod of the hydraulic cylinder 8 moves rightwards under the action of the return spring 10 arranged in the rod-free cavity, and the rod cavity of the hydraulic cylinder 8 sucks oil from the hydraulic oil tank 16 through the check valve 13. The reciprocating circulation is performed in this way, and when the amount of hydraulic oil entering the accumulator group 15 reaches the power generation requirement of the hydraulic power generation system 17, the hydraulic oil of the accumulator group 15 is released to drive the hydraulic power generation system 17 to generate power.
When the wave condition reaches the limit of the designed anchoring system, under the action of the first half period of the wave, the anchoring force borne by the anchor chain 2 and the steel wire cable 12 is larger, the steel wire cable 12 pulls the piston rod of the hydraulic cylinder to move leftwards all the time, hydraulic oil in the rod cavity of the hydraulic cylinder 8 is pumped into the energy accumulator group 15 until the anti-collision rubber block 7 at the piston rod end of the hydraulic cylinder 8 collides with the anti-collision rubber block 7 of the triangular support frame 6, the rubber block is used for buffering the larger anchoring force, as shown in fig. 5, when the second half period of the wave is reached, the anchoring force is unloaded from the anchor chain 2 and the steel wire cable 12, the piston rod of the hydraulic cylinder 8 moves rightwards under the action of the return spring 10 arranged in the rodless cavity, the rod cavity of the hydraulic cylinder 8 sucks oil from the hydraulic oil tank 16 through the one-way valve 13 until the next wave period starts to perform reciprocating circulation, and when the hydraulic oil amount in the energy accumulator group 15 reaches the power generation requirement, the hydraulic oil of the energy accumulator group 15 is released to drive the hydraulic power generation system 17 to generate power.
According to the hydraulic energy storage power generation type anchoring system, under the condition of heavy waves, the hydraulic buffering system is used for resisting the anchoring force, the anchoring force is used for driving the hydraulic buffering system to generate power, the impact and damage of the anchoring force on the wave energy power generation device are reduced, the viability of the wave energy power generation device under the extreme wave condition is guaranteed, meanwhile, the anchoring force is used for applying work to generate power, and the power supply of the wave energy power generation device is increased.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes and modifications made according to the spirit of the present disclosure should be covered within the scope of the present disclosure.
Claims (3)
1. The utility model provides a wave energy power generation facility is with hydraulic pressure energy storage electricity generation formula mooring system which characterized in that: the hydraulic power generation device comprises an anchor, an anchor chain, an anchor machine, a chain stopper, a cable, a hydraulic cylinder, an energy accumulator, an oil tank and a hydraulic power generation system; the anchor machine and the chain stopper are arranged at the top end of the wave energy power generation device, one end of the anchor chain is connected with the anchor, and the other end of the anchor chain is arranged on the anchor machine and is connected with the cable; the hydraulic cylinder, the energy accumulator, the oil tank and the hydraulic power generation system are arranged in a bottom cabin of the wave power generation device, the other end of the cable is connected with a piston rod of the hydraulic cylinder, one path of a rod cavity of the hydraulic cylinder is connected to the energy accumulator through a one-way valve, the other path of the rod cavity of the hydraulic cylinder is connected with the oil tank through the one-way valve, and a rodless cavity of the hydraulic cylinder is directly communicated with air in the bottom cabin; when the hydraulic cylinder is subjected to anchoring force, a piston rod of the hydraulic cylinder moves, oil in a rod cavity of the hydraulic cylinder is pumped into the energy accumulator, the energy accumulator accumulates certain hydraulic oil and then releases the hydraulic oil to drive the hydraulic power generation system to generate power, when the hydraulic cylinder is not subjected to anchoring force, the piston rod of the hydraulic cylinder resets, and the rod cavity of the hydraulic cylinder absorbs oil from the oil tank;
the hydraulic cylinder is horizontally arranged in a bottom cabin of the wave power generation device, the bottom cabin is also provided with a fixed pulley, the other end of the cable is connected with a piston rod of the hydraulic cylinder by bypassing the fixed pulley, and a return spring for resetting the piston of the hydraulic cylinder is arranged in a rodless cavity of the hydraulic cylinder;
the energy accumulator is an energy accumulator group;
the cable is a steel wire cable;
the anti-collision structure is used for controlling the stroke of a piston rod of the hydraulic cylinder and preventing the hydraulic cylinder from being damaged;
the anti-collision structure comprises a triangular support frame arranged opposite to a piston rod of the hydraulic cylinder, anti-collision rubber blocks are respectively arranged on the opposite end surfaces of the triangular support frame and the piston rod of the hydraulic cylinder, and a through hole for a cable to pass through is also formed in the end surface of the triangular support frame, which is provided with the anti-collision rubber blocks;
under the condition of ordinary waves, the anchoring force borne by the semi-submersible wave power generation device is small, the anchoring force can be resisted only by using a conventional anchoring system, at the moment, an anchor chain is still in a catenary state, a chain stopper and an anchor machine are in normal working states, the anchor chain is loose, the catenary is slightly elongated and then returns to the original state under the action of waves, and a steel wire cable connected with the other end of the anchor chain is not subjected to the anchoring force at the moment;
when the wave condition is gradually increased and the waves are in a larger wave condition, the anchoring force borne by the semi-submersible wave energy power generation device is increased, the anchor chain gradually tends to be tightened under the action of the waves, but is not completely tightened, the semi-submersible wave energy power generation device gradually retreats and returns to the original state under a wave period, at the moment, the chain stopper and the anchor machine are still in a normal working state, and the steel wire cable connected with the other end of the anchor chain is still not subjected to the anchoring force;
when the wave condition continues to increase, the wavelength is very long, under the condition of heavy waves, the half period of the waves exceeds the length of the released anchor chain, the anchor chain is often in a tightened state under the action of the waves, at the moment, the chain stopper needs to be opened to release all the anchor chains, and under the action of the first half period of the waves, because the chain stopper does not prevent the steel wire cable connected with one end of the anchor chain from bearing the same anchoring force with the anchor chain, a piston rod of a hydraulic cylinder connected with the steel wire cable moves leftwards but does not move to a limit position, namely an anti-collision rubber block at the piston rod end of the hydraulic cylinder is not contacted with an anti-collision rubber block of a triangular support frame, the piston rod moves leftwards to pump the hydraulic oil in the rod cavity of the hydraulic cylinder into the energy accumulator group, the pressure of the energy accumulator group is higher, the counter-acting force of the hydraulic cylinder for resisting the anchoring system is equal to the product of the effective cross-sectional area of the hydraulic cylinder and the pressure of the energy accumulator group, namely the counter-acting force for resisting the anchoring system is larger, when the hydraulic cylinder is positioned in the second half period of wave, the anchor chain and the steel wire cable are not subjected to anchoring force, the anchor chain is restored to a catenary state, at the moment, the piston rod of the hydraulic cylinder moves rightwards under the action of a return spring arranged in the rodless cavity, and the rod cavity of the hydraulic cylinder sucks oil from the hydraulic oil tank through the one-way valve; the reciprocating circulation is carried out in such a way, and when the amount of hydraulic oil entering the energy accumulator group reaches the power generation requirement of the hydraulic power generation system, the hydraulic oil of the energy accumulator group is released to drive the hydraulic power generation system to generate power;
when the wave condition reaches the limit of the designed anchoring system, under the action of the first half period of the wave, the anchoring force borne by the anchor chain and the steel wire cable is larger, the steel wire cable pulls the piston rod of the hydraulic cylinder to move leftwards all the time, hydraulic oil in the rod cavity of the hydraulic cylinder is pumped into the energy accumulator group until the anti-collision rubber block at the piston rod end of the hydraulic cylinder collides with the anti-collision rubber block of the triangular support frame, the rubber block is used for buffering the larger anchoring force, when the second half period of the wave is reached, the anchoring force is released from the anchor chain and the steel wire cable, the piston rod of the hydraulic cylinder moves rightwards under the action of a return spring arranged in the rodless cavity, the rod cavity of the hydraulic cylinder absorbs oil from the hydraulic oil tank through the one-way valve until the next wave period starts, reciprocating circulation is carried out, and when the hydraulic oil amount in the energy accumulator group reaches the power generation requirement, the hydraulic oil of the energy accumulator group is released, and the hydraulic power generation system is driven to generate power.
2. The hydraulic energy storage power generation type anchoring system for the wave power generation device according to claim 1, characterized in that: the end part of the piston rod of the hydraulic cylinder is provided with a disc, a cable is connected to the center of the disc, and the anti-collision rubber blocks are arranged on the disc at intervals.
3. The hydraulic energy storage power generation type anchoring system for the wave power generation device according to claim 2, characterized in that: the end surface of the triangular support frame is also a disc, and the anti-collision rubber blocks are arranged on the disc at intervals.
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| GB1599673A (en) * | 1976-12-24 | 1981-10-07 | Emh | Off-shore mooring device for a large-sized floating body |
| US4754157A (en) * | 1985-10-01 | 1988-06-28 | Windle Tom J | Float type wave energy extraction apparatus and method |
| CN101012802A (en) * | 2006-12-21 | 2007-08-08 | 中国科学院广州能源研究所 | Hydraulic cylinder down-suspension floater wave energy generating system |
| CN105927497A (en) * | 2016-05-04 | 2016-09-07 | 刘硕珣 | Offshore mooring hydraulic wave energy power pump |
| WO2018028584A1 (en) * | 2016-08-08 | 2018-02-15 | 曲言明 | Wave-activated power generator provided with rope-control hydraulic cylinder |
| CN209025787U (en) * | 2018-10-10 | 2019-06-25 | 大连理工大学 | It is integrated in the liquid tank float-type Wave energy electric generator of floating breakwater |
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2020
- 2020-08-05 CN CN202010778506.0A patent/CN112065641B/en active Active
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