CN118083105A - Ship capable of utilizing wave energy to propel and obtain energy to generate power - Google Patents
Ship capable of utilizing wave energy to propel and obtain energy to generate power Download PDFInfo
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- CN118083105A CN118083105A CN202410273341.XA CN202410273341A CN118083105A CN 118083105 A CN118083105 A CN 118083105A CN 202410273341 A CN202410273341 A CN 202410273341A CN 118083105 A CN118083105 A CN 118083105A
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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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- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a ship for propelling and obtaining energy to generate electricity by utilizing wave energy, which comprises a ship body, wherein a flapping hydrofoil propelling device is arranged at the tail part of the ship body and is connected with a wave energy conversion device; the flapping hydrofoil propelling device comprises a telescopic rod, a double-gyro type floater, a floater supporting rod, a fixed support, a hydrofoil, a rotating shaft and springs, wherein the double-gyro type floater is connected with the hydrofoil through the telescopic rod, the hydrofoil is connected with the fixed support through the rotating shaft, the fixed support is connected with a ship body, the springs are arranged on two sides of the fixed support, the telescopic rod is hinged with the double-gyro type floater, and the double-gyro type floater can move on the floater supporting rod, so that the double-gyro type floater is limited to rotate. The flapping hydrofoil propeller directly generates propulsion by utilizing the kinetic energy of water flow, so that the efficiency is higher; the propulsion efficiency is optimized by adjusting the angle and the frequency of the hydrofoil, the energy consumption is reduced, the durability and the maneuverability are good, and the noise and the vibration generated in the operation are low.
Description
Technical Field
The invention belongs to ships, and particularly relates to a ship which utilizes wave energy to propel and obtain energy to generate electricity.
Background
The flapping hydrofoil device is a ship movement device, the hydrofoil can generate lift force and thrust under the interaction with fluid, and the hydrofoil arrangement scheme and the wave energy conversion device design are reasonably designed, so that the device can achieve the effects of ship propulsion, conversion of wave energy into electric energy, supply of the electric energy to cabins on a ship and the like.
In the prior art, most of ships adopt propeller propellers, and the problem of poor performance exists in low-speed near-target operation. In natural aquatic animals, fish propel themselves forward by swinging the tail fin. The oscillation of the skegs is driven by the muscles of the fish, which produce propulsion by contraction and relaxation of the muscles. This propulsion is efficient and flexible, and it is therefore desirable to be able to use it in underwater propulsion devices. Compared with the traditional propeller, the flapping hydrofoil propeller has more advantages, such as good maneuverability, small turning radius, stable operability and realization of the integration of propeller and rudder. The motion performance of the ship carrying the flapping hydrofoils is greatly improved compared with that of the traditional propeller ship.
Flapping hydrofoil propellers can be divided into single-degree-of-freedom propellers, double-degree-of-freedom propellers and three-degree-of-freedom propellers according to degrees of freedom. The single-degree-of-freedom hydrofoil propeller has a simple structure, but can only complete the flapping movement of the flapping wings. The three-degree-of-freedom hydrofoil propeller has a complex structure and is not easy to realize engineering application. The double degrees of freedom can well complete various motion indexes of the ship.
The invention patent with publication number CN101003301A discloses an underwater hydrofoil simulating propulsion device, which adopts two motors and a control system to realize the rotation of two degrees of freedom of hydrofoil flapping and rotary motion. However, the waterproof wing propulsion device has a complex structure, needs accurate control, needs to be provided with a complex singlechip control system and has high price, and the technology is rarely applied to engineering practice at present.
In general, the existing propeller has the disadvantages of low efficiency, high noise and vibration, complex structural design, and poor durability and maneuverability.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention aims to provide the ship which has high working efficiency, small noise vibration and high durability and maneuverability and utilizes wave energy to propel and obtain energy to generate electricity.
The technical scheme is as follows: the invention relates to a ship for propelling and obtaining energy to generate electricity by utilizing wave energy, which comprises a ship body, wherein a flapping hydrofoil propelling device is arranged at the tail part of the ship body and is connected with a wave energy conversion device; the flapping hydrofoil propelling device comprises a telescopic rod, a double-gyro type floater, a floater supporting rod, a fixed support, a hydrofoil, a rotating shaft and springs, wherein the double-gyro type floater is connected with the hydrofoil through the telescopic rod, the hydrofoil is connected with the fixed support through the rotating shaft, the fixed support is connected with a ship body, the springs are arranged on two sides of the fixed support, the telescopic rod is hinged with the double-gyro type floater, and the double-gyro type floater can move on the floater supporting rod, so that the double-gyro type floater is limited to rotate. The springs are used to stabilize the heave motion of the hydrofoils. The telescopic rod piece is used for adjusting the distance between the double-gyro type floater and the hydrofoil, and aims to effectively adjust the attack angle of the hydrofoil so as to obtain larger thrust.
Further, the wave energy conversion device comprises a pulley I, a rope, a gyro-type floater, a pulley II, a pulley III, a belt pulley, a mechanical transmission device and a generator, wherein the rope is in sliding connection with the pulley I, the pulley II, the pulley III and the belt pulley, the gyro-type floater drives the rope connected with the gyro-type floater to rotate along with fluctuation of waves, the belt pulley drives the mechanical transmission device to work, wave energy is converted into electric energy through the mechanical transmission device, and the electric energy is supplied to each cabin of the ship body through the generator, so that the purposes of energy conservation and emission reduction are achieved.
Further, the wave energy conversion device also comprises a lower platform, a side platform and an upper platform, wherein the side platform is respectively connected with the lower platform and the upper platform. The lower platform is provided with a pulley II and a pulley III, and the upper platform is provided with a pulley I, a belt pulley and a mechanical transmission device.
Further, when the flapping hydrofoil propulsion device is positioned at the wave crest of the wave, the double-gyro type floater moves upwards to drive the telescopic rod piece to incline upwards, so that the hydrofoil is driven to rotate upwards around the rotating shaft. When the flapping hydrofoil propulsion device is positioned at the trough of waves, the double-gyro type floater moves downwards to drive the telescopic rod piece to incline downwards, so that the hydrofoil is driven to rotate downwards around the rotating shaft, and the pitching motion of the hydrofoil is realized.
Further, when the ship body is positioned at the wave crest of the wave, the flapping hydrofoil propulsion device ascends along with the ship body, the springs are compressed, the hydrofoil is controlled to slowly ascend, and then stability is maintained. When the ship body is positioned at the trough of the wave, the spring stretches to control the hydrofoil to slowly move downwards, and finally the heave motion of the hydrofoil is realized.
Further, the hydrofoil is a NACA airfoil. The double-gyro type floater is made of a light alloy material.
Working principle: the steering control of the fully passive flapping hydrofoils mainly depends on the dynamic effect of the water flow when the ship steers. When the hydrofoil is impacted by the water flow on one side, a thrust in the opposite direction is generated, so that a moment to one side is generated on the ship, and the ship is driven to turn. But its control capability is relatively weak, and accurate steering control cannot be achieved. In practice, it is often necessary to equip steering systems or other auxiliary equipment to enhance the steering control capability of the vessel.
Under the action of the waves, the water flow creates a pressure differential across the hydrofoil as it beats. On one side of the hydrofoil, the speed of the water flow is higher, and lower static pressure is generated; on the other side of the hydrofoil, the velocity of the water flow is slower, producing a higher static pressure. This pressure difference will generate a backward propulsion force pushing the ship forward. The attack angle of flapping hydrofoils refers to the angle between the hydrofoils and the water flow. By periodically varying the angle of attack of the hydrofoils, a periodic pressure differential can be created, thereby creating a periodic propulsive force. The periodic movement of the flapping hydrofoils is achieved by mechanical drive means (floats, springs).
Under the action of the waves, the wave energy conversion device effectively captures wave energy by using a gyro-type float device, so that the wave energy conversion device can generate corresponding mechanical motion along with the up-and-down motion of the waves. The mechanical transmission device converts the mechanical energy of waves into mechanical motion energy, the generator further converts the mechanical motion energy into electric energy, and electric current is generated through interaction of a magnetic field and a coil. These currents are rectified, regulated and power regulated by appropriate circuitry and control systems to ultimately output stable electrical energy. The converted electric energy is transmitted to electric equipment in each cabin on the ship through a cable for use. In this way, ocean wave energy can be effectively utilized, enabling sustainable clean energy supply.
The beneficial effects are that: compared with the prior art, the invention has the following remarkable characteristics:
1. the flapping hydrofoil propeller directly generates propulsion by utilizing the kinetic energy of water flow, and compared with the traditional propeller, the flapping hydrofoil propeller is more efficient; the propulsion efficiency is optimized by adjusting the angle and the frequency of the hydrofoil, so that the energy consumption is reduced, and the durability and the maneuverability are good;
2. The flapping hydrofoil propeller has lower noise and vibration in the running process and has smaller influence on underwater organisms and environment, so that the flapping hydrofoil propeller is more feasible to be applied in a sensitive environment;
3. The flapping hydrofoil propeller realizes the adjustment and control of the propelling force by adjusting the angle and the frequency of the hydrofoil, has better maneuverability and flexibility, and is suitable for different underwater task demands;
4. The flapping hydrofoil propeller has a relatively simple structure, and does not need a complex transmission system and parts with higher maintenance frequency. Maintenance cost and maintenance time are reduced, and the service life of the propeller is prolonged;
5. The wave energy is a renewable energy source, and the wave energy conversion electric energy device can effectively utilize wave energy in the ocean, does not deplete or pollute the environment, and has lower carbon emission;
6. the wave energy conversion electric energy device is adjusted and optimized according to different wave conditions and is suitable for wave characteristics of different sea areas, so that the device has good adaptability and applicability in various marine environments.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic illustration of the connection of the flapping hydrofoil propulsion device 2 and the wave energy conversion device 3 according to the invention;
FIG. 3 is a front view of the stern of the present invention;
FIG. 4 is a schematic view of the flapping hydrofoil propulsion device 2 of the present invention;
Fig. 5 is a schematic view of the structure of the wave energy converting apparatus 3 of the present invention;
FIG. 6 is a working view of the flapping hydrofoil propulsion device 2 of the invention in pitch and heave;
fig. 7 is a schematic diagram of the forces generated in the flow field by the flapping hydrofoil propulsion device 2 of the present invention.
Detailed Description
As shown in fig. 1-2, the tail of the hull 1 of the ship which utilizes wave energy to propel and obtain energy to generate electricity utilizes a flapping hydrofoil propulsion device 2 to replace a traditional propeller propulsion device, and the flapping hydrofoil propulsion device 2 is connected with a wave energy conversion device 3. The hull 1 is a low speed vessel with a length of 6 meters (20 feet). The ship body 1 is made of aluminum alloy, has the density of 2.7g/cm 3, the strength of 300MPa and the elastic modulus of 80GPa, and has the characteristics of good corrosion resistance, light weight and easy processing.
As shown in fig. 2 to 3, the flapping hydrofoil propulsion device 2 is connected with the wave energy conversion device 3, the flapping hydrofoil propulsion device 2 and the wave energy conversion device 3 are integrated, the whole supporting platform 204 is divided into three parts, the flapping hydrofoil 205 is mounted in the middle, and the wave energy conversion devices 3 are mounted on two sides respectively. A spring 207 is mounted on each of the side panels of the support platform for stabilizing the heave motion of the hydrofoil 205. The hydrofoil 205 is selected from NACA0018 airfoils, and the NACA0018 airfoil has the advantages of higher lift coefficient, lower drag coefficient, good stability, easy manufacture and installation and diversified application. The spring 207 material is 50CrV4, 50CrV4 is an alloy steel with higher strength and wear resistance, and the spring 207 constant: 200-250GPa, yield strength: 1100-1300MPa, tensile strength: 1300-1500MPa, elastic modulus: 210GPa, hardness: HRC 48-52.
The specific spring 207 formula depends on the design and manner of movement of the flapping foil 205. For describing the movement of flapping foils 205:
F＝k*x
Where F represents the elastic force of the spring 207, k represents the spring constant, and x represents the deformation amount of the spring 207. In flapping foils, the amount x of deflection of the spring 207 may be expressed as the angle of deflection or displacement of the foil 205. When the hydrofoil 205 is deflected by an external force, the spring 207 generates a restoring force to return the hydrofoil 205 to its original position. The spring force of the spring 207 is proportional to the amount of deformation, and the larger the spring constant k is, the larger the stiffness of the spring 207 is.
As shown in fig. 4, the tail of the ship body 1 replaces the traditional propeller propulsion device with a flapping hydrofoil propulsion device 2, and the flapping hydrofoil propulsion device 2 is connected with a wave energy conversion device 3. The flapping hydrofoil propulsion device 2 is provided with a double-gyro type floater 202, the double-gyro type floater 202 is connected with a hydrofoil 205 through a telescopic rod 201, the hydrofoil 205 is supported by a fixed bracket 204, the fixed bracket 204 is connected with the ship body 1, and springs 207 are arranged on two sides of the fixed bracket 204. The double-gyro-type float 202 moves on the float support bar 203, thereby restricting the double-gyro-type float 202 from rotating. The fixed bracket 204 is connected with the hydrofoil 205 through a rotating shaft 206, and the double-gyro type floater 202 is connected with the telescopic rod 201 through the rotating shaft. The telescopic rod 201 is used for adjusting the distance between the floater 202 and the hydrofoil 205, so as to effectively adjust the attack angle of the hydrofoil 205, and obtain larger thrust. The double-gyro type floater 202 adopts light alloy and has the density: 2.7g/cm 3, yield strength: 100-600MPa, tensile strength: 200-700MPa, elastic modulus: 70-80GPa, hardness: 30-150HB, which has high strength and stiffness while being relatively light in weight, is a desirable option for adjusting the angle of attack of the flapping hydrofoil 205, i.e., providing sufficient strength and stiffness, without adding too much weight.
As shown in fig. 5, the capacitation power generation device 3 is fixed on a supporting platform composed of an upper platform 308, a side platform 307 and a lower platform 305, and the side platform 307 is connected with the side plate of the fixed bracket 204 of the flapping hydrofoil propulsion device 2. The gyro-type floater 303 of the wave energy conversion device 3 drives the rope 302 connected with the floater to rotate along with fluctuation of waves, the rope 302 is in sliding connection with the pulley I301, the pulley II 304, the pulley III 306 and the pulley 309, the rope is transmitted to the pulley 309 through the pulley, the pulley 309 further drives the mechanical transmission device 310 to work, wave energy is converted through the mechanical transmission device 310 and is supplied to electric equipment in each cabin of the ship body 1 through the generator 311, so that the wave energy is converted into mechanical energy, the mechanical energy is converted into electric energy and is transmitted to each electric equipment, and the purposes of energy conservation and emission reduction are achieved.
As shown in fig. 6, when the flapping hydrofoil propulsion device 2 is at the wave crest of the wave, the double-gyro type floater 202 moves upwards to drive the telescopic rod 201 to incline upwards, so that the hydrofoil 205 is changed to rotate upwards around the rotating shaft 206; when the flapping hydrofoil propulsion device 2 is positioned at the trough of a wave, the double-gyro type floater 202 moves downwards to drive the telescopic rod 201 to incline downwards, so that the hydrofoil 205 is changed to rotate downwards around the rotating shaft 206, and finally the pitching motion of the hydrofoil 205 is realized. When the ship body 1 is positioned at the wave crest of the wave, the flapping hydrofoil propulsion device 2 ascends along with the ship body 1, the double springs 207 are compressed, and the hydrofoil 205 is controlled to slowly ascend so as to keep stable; when the hull 1 is in the "trough" of the wave, the double springs 207 are stretched, controlling the hydrofoils 205 to move slowly downwards, eventually effecting a heave motion of the hydrofoils 205.
As shown in fig. 7, when the flapping hydrofoil 205 moves in a flow field in a heave and pitch mode, the flow field interacts with the hydrofoil 205 so that the hydrofoil 205 obtains forward power, the force generated by the hydrofoil 205 in the flow field along the x-axis direction of the coordinate system is defined as thrust according to the coordinate system set in the flow field, the force generated by the hydrofoil 205 along the y-axis direction of the coordinate system is lateral force, and the improvement of the propulsion performance of the hydrofoil 205 is mainly measured by the indexes.
The steering control of the fully passive flapping hydrofoil 205 is mainly dependent on the dynamics of the water flow when the vessel is turning. When the hydrofoil 205 is impacted by the water flow on one side, a thrust is generated in the opposite direction, so that a moment to one side is generated on the ship 1, and the ship 1 is driven to turn. But its control capability is relatively weak, and accurate steering control cannot be achieved. In practice, it is often necessary to provide steering systems or other auxiliary equipment to enhance the steering control capability of the vessel 1.
Under the influence of waves, the water flow creates a pressure differential across the hydrofoil 205 as the hydrofoil 205 is flapped. On one side of the hydrofoil 205, the velocity of the water flow is faster, producing a lower static pressure; on the other side of the hydrofoil 205, the velocity of the water flow is slower, producing a higher static pressure. This pressure difference will generate a backward propulsion force pushing the ship 1 forward. The angle of attack of the flapping hydrofoil 205 refers to the angle of the hydrofoil 205 to the flow of water. By periodically varying the angle of attack of the hydrofoil 205, a periodic pressure differential may be created, thereby creating a periodic propulsive force. Periodic movement of flapping foils 205 is achieved by a mechanical drive (float 202, spring 207).
Under the action of the waves, the wave energy conversion device 3 captures wave energy effectively by using the gyroscopic float device 303, so that the wave energy can generate corresponding mechanical motion along with the up-and-down motion of the waves. The mechanical transmission 310 converts the mechanical energy of the waves into mechanical motion energy, which is further converted into electrical energy by the generator 311, which generates an electric current through the interaction of the magnetic field and the coil. These currents are rectified, regulated and power regulated by appropriate circuitry and control systems to ultimately output stable electrical energy. The converted electric energy is transmitted to electric equipment in each cabin on the ship 1 through cables for use. In this way, ocean wave energy can be effectively utilized, enabling sustainable clean energy supply.
Claims (10)
1. The utility model provides a utilize wave energy to impel and get boats and ships that can generate electricity which characterized in that: the device comprises a ship body (1), wherein a flapping hydrofoil type propulsion device (2) is arranged at the tail part of the ship body (1), and the flapping hydrofoil type propulsion device (2) is connected with a wave energy conversion device (3); flapping hydrofoil propulsion device (2) are including telescopic member (201), two top floats (202), float support member (203), fixed bolster (204), hydrofoil (205), pivot (206), spring (207), two top floats (202) link to each other with hydrofoil (205) through telescopic member (201), hydrofoil (205) link to each other with fixed bolster (204) through pivot (206), fixed bolster (204) link to each other with hull (1), both sides of fixed bolster (204) set up spring (207), telescopic member (201) are articulated with two top floats (202), two top floats (202) can be at float support member (203) upward movement to restrict two top floats (202) rotation.
2. A vessel for propulsion and power generation from wave energy as defined in claim 1, wherein: the wave energy conversion device (3) comprises a pulley I (301), a rope (302), a gyro-type floater (303), a pulley II (304), a pulley III (306), a belt pulley (309), a mechanical transmission device (310) and a generator (311), wherein the rope (302) is in sliding connection with the pulley I (301), the pulley II (304), the pulley III (306) and the belt pulley (309), the gyro-type floater (303) drives the rope (302) connected with the gyro-type floater to rotate along with fluctuation of waves, the belt pulley (309) drives the mechanical transmission device (310) to work, wave energy is converted into electric energy through the mechanical transmission device (310), and the electric energy is supplied to each cabin electric appliance of the ship body (1) through the generator (311).
3. A vessel for propulsion and power generation from wave energy as defined in claim 1, wherein: the wave energy conversion device (3) further comprises a lower platform (305), a side platform (307) and an upper platform (308), wherein the side platform (307) is connected with the lower platform (305) and the upper platform (308) respectively.
4. A vessel for propulsion and power generation from wave energy as defined in claim 3, wherein: and the lower platform (305) is provided with a pulley II (304) and a pulley III (306), and the upper platform (308) is provided with a pulley I (301), a belt pulley (309) and a mechanical transmission device (310).
5. A vessel for propulsion and power generation from wave energy as defined in claim 1, wherein: when the flapping hydrofoil propulsion device (2) is positioned at the wave crest of the wave, the double-gyro type floater (202) moves upwards to drive the telescopic rod piece (201) to incline upwards, and then the hydrofoil (205) is driven to rotate upwards around the rotating shaft (206).
6. A vessel for propulsion and power generation from wave energy as defined in claim 1, wherein: when the flapping hydrofoil propulsion device (2) is positioned at the trough of waves, the double-gyro type floater (202) moves downwards to drive the telescopic rod piece (201) to incline downwards, so that the hydrofoil (205) is driven to rotate downwards around the rotating shaft (206) to realize pitching motion of the hydrofoil (205).
7. A vessel for propulsion and power generation from wave energy as defined in claim 1, wherein: when the ship body (1) is positioned at the wave crest of the wave, the flapping hydrofoil propulsion device (2) rises along with the ship body (1), the springs (207) are compressed, and the hydrofoils (205) are controlled to slowly rise, so that stability is maintained.
8. A vessel for propulsion and power generation from wave energy as defined in claim 1, wherein: when the ship body (1) is positioned at the trough of waves, the springs (207) are stretched, the hydrofoils (205) are controlled to slowly move downwards, and finally the heave motion of the hydrofoils (205) is realized.
9. A vessel for propulsion and power generation from wave energy as defined in claim 1, wherein: the hydrofoil (205) is a NACA0018 airfoil.
10. A vessel for propulsion and power generation from wave energy as defined in claim 1, wherein: the double-gyro type floater (202) is made of a light alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410273341.XA CN118083105A (en) | 2024-03-11 | 2024-03-11 | Ship capable of utilizing wave energy to propel and obtain energy to generate power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410273341.XA CN118083105A (en) | 2024-03-11 | 2024-03-11 | Ship capable of utilizing wave energy to propel and obtain energy to generate power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118083105A true CN118083105A (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410273341.XA Pending CN118083105A (en) | 2024-03-11 | 2024-03-11 | Ship capable of utilizing wave energy to propel and obtain energy to generate power |
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| Country | Link |
|---|---|
| CN (1) | CN118083105A (en) |
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- 2024-03-11 CN CN202410273341.XA patent/CN118083105A/en active Pending
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