CN112228271B

CN112228271B - A wave-current integrated array suspended power generation device

Info

Publication number: CN112228271B
Application number: CN202011208951.XA
Authority: CN
Inventors: 曹宇; 王宁; 刘紫嫣; 宋育泽; 唐小波
Original assignee: Shanghai Ocean University
Current assignee: Shanghai Ocean University
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2025-01-21
Anticipated expiration: 2040-11-03
Also published as: CN112228271A

Abstract

The present invention discloses a wave-current integrated array suspended power generation device, which is composed of several groups of wave-current turbines and an anchoring system; the characteristics are: each group of wave-current turbines is installed on a bracket, including an impeller, a transmission connecting rod mechanism, a generator and a buoy; wherein, after the impeller rotates in a circle, the generator is driven by the transmission connecting rod mechanism to generate electricity, the first group of buoys is installed on both sides of the bracket, and the wave-current turbine floats on the sea surface using the buoys. The present invention arranges multiple turbines along the wave propagation direction, so that each turbine is subjected to the action of waves under different wave heights and wave phases, proposes the concept of overall energy acquisition stability of the turbine array, innovatively designs a horizontal vertical axis suspended turbine array, and uses a reasonable spatial layout to obtain multi-degree-of-freedom wave and tidal current energy.

Description

Wave-current integrated array suspension type power generation device

Technical field:

The invention relates to the technical field of integrated power generation devices, in particular to a wave current integrated array suspension type power generation device and a strategy for active control of maximum power.

The background technology is as follows:

Because the wave and tide energy are widely distributed and have different space-time distribution, structures, frequencies and phases in different sea areas, the wave and tide energy are respectively researched and utilized at present, whether in China or abroad, and the problems of lower total conversion efficiency and poor reliability exist. There is currently no standardized design and matching parameterized design system for a suspension turbine array.

In fact, in the development and utilization of renewable energy sources in the ocean, wave and tidal current energy are inseparable and interacted. Because the wave and tide power generation mechanisms are different, the interaction of the wave and tide can sometimes enhance the power generation effect, and sometimes weaken the power generation effect, so that the conversion device is often in an off-design working condition or cannot generate power or even destroy power generation equipment.

Therefore, research on the interaction mechanism of wave and tidal current energy is a scientific problem to be solved in order to realize the shaping and large-scale popularization of the ocean energy power generation device.

The current offshore tidal current energy power generation device has the following defects:

1. The traditional tidal current energy suspension type power generation device has a relatively single structure, the power generation power of the device is periodically changed in one period of wave interference action, and the power generation power of the device is difficult to maintain in a relatively stable range under different sea conditions. The above reasons cause that the electric energy converted by the power generation device cannot supply power to most devices needing relatively stable voltage operation, so that the power generation efficiency of the power generation device is reduced, and the application range is small.

2. At present, research on the offshore power generation device mainly focuses on experiments on how to obtain energy, and protection, fixation and utilization of the offshore power generation device are rarely considered.

The invention comprises the following steps:

the invention aims to solve the problems, and aims to provide the floating type power generation device suitable for the offshore wave current integrated array, which has relatively stable power so as to be suitable for more complex working environments and conveniently realize grid connection of electric energy.

The technical scheme is that the wave-current integrated array suspension type power generation device comprises a plurality of groups of wave-current water turbines and an anchoring system, and is characterized in that each group of wave-current water turbines is arranged on a support and comprises impellers, a transmission connecting rod mechanism, a generator and pontoons, wherein after the impellers rotate circumferentially, the generator is driven to generate power through the transmission connecting rod mechanism, the pontoons of the first group are arranged on two sides of the support, and the wave-current water turbines float on the sea surface by the pontoons.

In one embodiment, the transmission link mechanism comprises a transmission link, a first end of the transmission link is movably connected with the rotating shaft of the impeller, a second end of the transmission link is movably connected with the rotating shaft of the generator coil, the rotating shaft of the impeller is connected with the impeller through a connecting component, and two ends of the impeller and two ends of the generator coil are respectively provided with a group of transmission links.

In one embodiment, the angular phase difference between the two sets of said drive links on either side of said impeller is 180 °.

In one embodiment, a plurality of groups of the wave-stream water turbines are arranged in an array mode, the first group of adjacent wave-stream water turbines are connected through universal connecting rods, the universal connecting rods are basically consistent with the wave direction, the second group of adjacent wave-stream water turbines are connected through fixed connecting rods, and the fixed connecting rods are basically perpendicular to the wave direction.

In one embodiment, the anchoring system comprises an anchoring system buoy, an anchor chain and a fixed anchor, wherein the fixed anchor is arranged on the seabed and is connected with a second group of buoys through the anchor chain, and the second group of buoys are connected with the group of wave-stream water turbines through device fixing rods.

In one embodiment, the universal joint connection is made between the universal joint rod and the wave turbine or between the second set of pontoons and the device fixing rod.

In one embodiment, the device further comprises a support frame, the impeller is connected with the support frame through the support frame to provide support for the impeller, and a rotating shaft of the impeller is a crankshaft.

In one embodiment, the gimbal of the second set of pontoons is coupled to the plant fixing bars via an anchor system interface.

In one embodiment, the waves are applied perpendicularly to the impeller by angular adjustment of the cardan shaft on the cardan joint, obtaining maximum power generation efficiency.

In one embodiment, the wave-flow water turbines of each group are arranged at a certain distance, and are in a rectangular array as a whole.

In one embodiment, the device also comprises a device for controlling and managing the power supply module, comprising an antenna, a storage battery, a microcomputer and interfaces with various functions.

Compared with the prior art, the invention has the main advantages or positive effects that:

1) The problems of low total energy obtaining efficiency, high starting speed requirement, poor energy obtaining stability, strong fluctuation and the like of the traditional suspension type vertical axis water turbine under the combined action of wave currents are solved. According to the invention, the plurality of water turbines are arranged along the wave propagation direction, so that each water turbine is under the wave action of different wave heights and wave phases, the integral energy obtaining and stabilizing concept of the water turbine array is provided, the horizontal vertical axis suspension water turbine array is innovatively designed, and the wave and tidal current energy with multiple degrees of freedom are obtained by utilizing reasonable space layout.

2) The connection device of the wave-flow water turbine 001 has high interchangeability by properly integrating the integration devices of different scales under different working environments. Can set up different length with universal connecting rod and fixed connecting rod under the different work environment in order to obtain maximum generating efficiency.

3) The novel tidal current energy power generation equipment integrated system is designed, the influence of the structure on the water flow resistance is small, and the structural stability can be ensured. The connecting rod and the device fixing rod are made of materials with the characteristics of light weight, wear resistance, corrosion resistance, durability and the like. And paint brushing and rust prevention are finished on the outer surface of the paint.

4) The power generation equipment needs to be cleaned regularly to prevent marine organisms from adhering to and blocking the water body from flowing. Prevent the floating garbage on the sea from being involved in the power generation rotating equipment and winding to damage the power generation device. The device has relatively few types of parts, relatively few problems among the parts, and low maintenance and cleaning difficulty.

5) The wave flow water turbines are integrated to generate electricity, an electric power grid-connected device is arranged while the relatively stable power is ensured, and electric energy enters an interface to reach a power grid through the adjustment of the converter. The electric power is transported by the power grid, is transmitted to the energy storage power station, is transmitted into the interface by the converter, and enters the energy storage power station to finish the storage of electric energy.

6) The controller can be used for controlling all the module devices in a centralized way, so that intelligent remote monitoring is realized. And the monitoring equipment data is sent to the land regularly, so that the corresponding sea area environment and other conditions can be conveniently researched.

Description of the drawings:

FIG. 1 is a schematic diagram of an overall structure of a wave current integrated array suspension power generation device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of an installation of a marine turbine according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of an interface between the mooring system and the marine turbine in accordance with an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of a joint of a wave turbine connection in accordance with an embodiment of the present invention;

FIG. 5 is a front view of a wave turbine in accordance with an embodiment of the present invention;

FIG. 6 is a schematic diagram of a dual parallelogram transmission mechanism according to an embodiment of the present invention;

fig. 7 is a schematic diagram of an embodiment of the present invention for operating a power grid-connected circuit.

In the illustration:

001 wave flow type water turbine

101 Impeller

102 Generator

103 Drive connecting rod

104 Bearing bush

105 Control and power management module

201 Support frame

202 Support

203 Pontoon

204 Universal joint

205 Fixed connecting rod

206 Universal connecting rod

301 Device fixing rod

302 Mooring system interface

303 Mooring system universal joint

401 Mooring system buoy

402 Anchor chain

403 Anchor

106 Impeller shaft

107 Connecting part

108 Rotating shaft of generating coil

109 Generator coil

The specific embodiment is as follows:

Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present invention with specific examples. While the description of the invention will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the invention described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the invention. The following description contains many specific details for the purpose of providing a thorough understanding of the present invention. The invention may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

In the description of the present embodiment, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present invention.

The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or communicating between two elements. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1 in combination with fig. 2-7, the invention discloses a wave-current integrated array suspension type power generation device, which comprises a wave-current water turbine 001, an impeller 101, a generator 102, a transmission connecting rod 103, a bearing bush 104, a control and power management module 105, a rotating shaft 106 of the impeller, a connecting part 107, a rotating shaft 108 of a generator coil, a generator coil 109, a support frame 201, a support frame 202, a pontoon 203, a universal joint 204, a fixed connecting rod 205, a universal connecting rod 206, a device fixing rod 301, an anchoring system interface 302, an anchoring system universal joint 303, an anchoring system pontoon 401, an anchor chain 402 and a fixed anchor 403.

In the wave-current integrated array suspension type power generation device, a certain wave-current water turbine is connected with a device fixing rod 301 through a universal joint 204, the device fixing rod 301 is connected with a anchoring system through an anchoring system interface 302, the anchoring system interface 302 is connected with an anchoring system universal joint 303, the anchoring system universal joint 303 is assembled on an anchoring system buoy 401, an anchor chain 402 is connected with the anchoring system buoy 401 and is connected with a fixing anchor 403, and the fixing anchor 403 is inserted on a seabed. The wave-flow water turbine 001 in the direction perpendicular to the water wave is connected together through a fixed connecting rod 205, the fixed connecting rod 205 is fixed on a pontoon 203, the wave-flow water turbine 001 in the direction of the water wave is connected through a universal connecting rod 206, the universal connecting rod 206 is connected with a universal joint 204 at a corresponding position, the universal joint 204 is assembled with the wave-flow water turbine 001, the wave-flow water turbine 001 floats on the sea surface through pontoons 203 at two sides of the wave-flow water turbine, the pontoon 203 is assembled with a bracket 202 through a connecting device, the bracket 201 is assembled with the bracket 202 through a connecting device, an impeller 101 is positioned below the bracket 201, a generator 102 is arranged inside the wave-flow water turbine, the connecting and fixing position of the generator 102 is connected with the bracket 202 through screw holes, the impeller 101 is connected with the bracket through a through hole on the bracket 201, a rotating shaft 106 of the impeller is designed as a crankshaft and is assembled with a transmission connecting rod 103, and meanwhile the transmission connecting rod 103 is assembled with a generating coil rotating shaft 108 to complete power transmission.

The invention has the beneficial effects that:

It will be appreciated that in one embodiment, a wave current integrated array suspension power plant, the wave current integrated turbine part support is a bracket 202, welded with rectangular tubes (see fig. 2), and welded with the support for the required cardan shaft of the part gimbal 204. The impeller 101 is mounted on the support frame 201, and then the rotation shaft 106 of the impeller is mounted in the support frame 202 together with the assembly of the support frame 201.

Pontoons 203 may be mounted on both sides of the brackets 202. Depending on the actual desired number and arrangement of the wave turbine, a corresponding number of universal joints 204 are installed in corresponding locations. The device fixing lever 301 is assembled with the universal joint 204 at a desired position to complete the universal shaft (refer to fig. 3). Each gimbal link 206 may also be assembled with each gimbal 204 with a fixed link 205 mounted in a corresponding location on buoy 203. The assembly of the entire wave current integrated array suspension power generation device is completed by connecting the wave current water turbine 001 and the anchoring system through the device fixing rod 301.

The functions realized by the components of the invention are as follows:

1. The impeller 101 is a working system of the whole device, and under the combined action of wave flows, along with the continuous alternation of wave crests and wave troughs, seawater intermittently floods into an impeller structure and causes the water turbine to forcedly move. The impeller 101 is connected with a transmission link 103, and the motion is transmitted to the transmission link 103 during the circular motion of the impeller 101.

2. The transmission connecting rod 103 is a power hull device for transmitting power from the impeller 101 to the generator 102, and the phase difference of the two sets of parallelogram four-bar transmission mechanisms at two sides of the impeller 101 is 180 degrees, so that the transmission stability is ensured, the stress concentration in the power transmission period of the device is eliminated, and the problem of an anti-parallelogram mechanism in one set of parallelogram four-bar transmission mechanism is eliminated.

3. The supporting frame 201 is indirectly connected with the impeller 101, provides support for the impeller 101, and ensures that the impeller 101 has a relatively stable dynamic working environment in operation.

4. The bracket 202 is the main support for several parts on the wave turbine.

5. Since the working environment of the whole device is the sea surface, the pontoon 203 is connected to the supporting frame 2021, and the device fixing bars 301 are connected to the mooring system so that all devices float on the sea surface.

6. The wave integrated array suspension type power generation device has the advantages that each wave-flow water turbine is located at different positions in operation, and the positions of each wave-flow water turbine are continuously changed in the process that seawater intermittently floods into the impeller structure.

7. The universal shaft of the universal joint provides the maximum position change space for each wave-flow water turbine so as to avoid the huge energy of waves from tearing down the device, and simultaneously limit a certain rotation angle to prevent the device parts from interfering the collision of the wave-flow water turbines.

8. The universal connecting rod 206 is connected with the fixed connecting rod 205 to enable the adjacent wave-flow water turbines to ensure a certain distance between the wave-flow water turbines, ensure that a plurality of wave-flow water turbines are positioned at different positions of waves in one wave period, ensure the relatively stable whole power generation efficiency and simultaneously prevent the too close distance between the wave-flow water turbines.

9. The device securing lever 301 is also connected to the gimbal 204 using a cardan shaft connection (see fig. 3). The sea wave has different directions at different stages, and the angle of the universal shaft can be adjusted so that the wave always acts on the impeller 101 vertically, thereby obtaining maximum power generation efficiency.

10. The mooring device mainly comprises a fixed anchor 403, a chain 402, a mooring device buoy 401 and the like. The anchor 403 is inserted into the sea bed, one end of the anchor chain 402 is tied on the anchor 403, the other end is tied on the mooring device buoy 401, the anchor 403 and the mooring device buoy 401 are connected, the main function of the mooring device buoy is to fix the sea surface working device, and the mooring device buoy is connected with a device which needs to be fixed in position through a universal shaft mechanism and an interface on the mooring device buoy.

11. The main devices of the control and power management module are an antenna, a storage battery, a microcomputer, interfaces with various functions and the like. The antenna can send information signals related to the working state of the device and receive control signals, the storage battery stores electric energy converted by the power generation device, power is provided for the control module and necessary preparation is provided for grid connection of the electric energy, the microcomputer is internally provided with a cpu, an integrated control panel, an interface and the like, the electric energy interface is connected with a power grid through the converter to transmit the electric energy, and the microcomputer combines instantaneous power with the electric quantity of the storage battery to store the control signals of the power station to control the converter to adjust current so as to meet the transportation requirement of the power grid.

The working principle of this embodiment is as follows:

1. The adjusting device fixing rod 301 enables wave flow to act on the impeller vertically, under the combined action of wave flow, along with continuous alternation of wave crests and wave troughs, seawater intermittently floods into the impeller structure, and the forced movement guide cover of the water turbine is caused to be provided with a power generation device, so that the conversion from wave flow energy to electric energy is completed in the process of circular movement of the impeller.

2. The device is internally provided with a plurality of wave-flow water turbines, in one wave-flow period of the sea surface, the waves at each wave-flow water turbine are different in phase, and each water turbine has different instantaneous power generation efficiency. The wave-current energy power generation equipment integrated system ensures that the whole device has relatively stable instantaneous power under the action of one wave-current period, and the electric energy is further converted by the electric energy conversion device to meet the requirement of electric power transmission.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The wave-current integrated array suspension type power generation device consists of a plurality of groups of wave-current water turbines and an anchoring system, and is characterized in that each group of wave-current water turbines is arranged on a bracket and comprises an impeller, a transmission connecting rod mechanism, a generator and pontoons, wherein after the impeller rotates circumferentially, the generator is driven to generate power by the transmission connecting rod mechanism, a first group of pontoons are arranged on two sides of the bracket, and the wave-current water turbines float on the sea surface by the pontoons;

The transmission link mechanism comprises a transmission link, a first end of the transmission link is movably connected with a rotating shaft of the impeller, a second end of the transmission link is movably connected with the rotating shaft of the generator coil, the rotating shaft of the impeller is connected with the impeller through a connecting part, and two ends of the impeller and two ends of the generator coil are respectively provided with a group of transmission links;

The plurality of groups of the wave-stream water turbines are arranged in an array mode, the first group of the adjacent wave-stream water turbines are connected through universal connecting rods, the universal connecting rods are basically consistent with the wave direction, the second group of the adjacent wave-stream water turbines are connected through fixed connecting rods, and the fixed connecting rods are basically vertical to the wave direction.

2. The power generation device according to claim 1, wherein the angular phase difference between the two sets of transmission links on both sides of the impeller is 180 °.

3. The power plant of claim 1, wherein the mooring system comprises a mooring system buoy, a chain, and a tie-down anchor, wherein,

The fixed anchors are arranged on the seabed and are connected with the second group of pontoons through anchor chains, and the second group of pontoons are connected with the group of wave-current water turbines through device fixing rods.

4. The power generation device of claim 3, wherein the universal joint is connected between the universal joint rod and the wave turbine or between the second set of pontoons and the device-fixing rod.

5. The power generation device of claim 4, further comprising a support frame, wherein the impeller is connected with the support frame through the support frame to provide support for the impeller, and a rotating shaft of the impeller is a crankshaft.

6. The power plant of claim 5, wherein the gimbal of the second set of pontoons is coupled to the plant fixing bars via an anchor system interface.

7. The power generation device according to any one of claims 4 to 6, wherein the maximum power generation efficiency is obtained by vertically acting the waves on the impeller by the angular adjustment of the universal shaft on the universal joint.

8. The power generation device according to any one of claims 1 to 3, wherein the wave-flow water turbines of each group are arranged at a certain distance from each other and are integrally formed in a rectangular array.

9. The power generation device of claim 8, further comprising means for controlling and managing the power module, including an antenna, a battery, and an interface for a microcomputer.