WO2011009377A1

WO2011009377A1 - Wave power generation system

Info

Publication number: WO2011009377A1
Application number: PCT/CN2010/075069
Authority: WO
Inventors: 曲言明
Original assignee: Qu Benjamin
Priority date: 2009-07-21
Filing date: 2010-07-08
Publication date: 2011-01-27
Also published as: CN101963125A

Abstract

A wave power generation system includes a wave energy collecting part, a power generator (36), and a base (4). The wave energy pushes a float (1), and the rope (3) is tensed by the float (1) so as to drive the pulley (2) on the float (1) to rotate and output the mechanical energy, so the wave energy collection is achieved; when the wave falls, the pulley (2) is reversed by a small force, and the rope (3) is pulled back. The wave energy collecting part supplies power to the generator (36). The system is applicable to most wave-forms of wave, and has better anti-storm performance, lower cost, and easy maintenance.

Description

Wave power generation system

The invention relates to a wave power generation system.

Background technique

Ocean wave energy is an endless renewable energy resource. How to use such abundant energy resources to serve human beings is an important topic that has been studied by predecessors and modern people. The use of wave energy to generate electricity is one of the major issues.

The ocean is affected by the changes of complex natural factors, and the changes in the size and form of its waves and tides make it more difficult for people to use the ocean wave energy for stable power generation.

Based on past research experience, it is believed that there are several effective methods for generating power from wave energy: the oscillating water column wave energy device, the poly wave reservoir wave energy device, and the pendulum wave energy device.

The advantage of the oscillating water column wave energy device is that the rotating mechanism is not in contact with seawater, has good anti-corrosion performance, is safe and reliable, and is easy to maintain. The disadvantage is that the secondary energy conversion efficiency is low, the adaptability to small waves is not strong, and the cost is high.

The advantage of the Jubo Reservoir device is that there is no moving parts in the first-stage conversion, the reliability is good, the maintenance cost is low, and the system output is stable. The downside is that the construction of the power station has requirements for the terrain and is not easy to promote.

The pendulum wave energy device, the movement of the pendulum body is very suitable for the characteristics of large thrust and low frequency of the wave. The conversion efficiency of the pendulum device is high, but the maintenance of the existing device machinery is difficult, easy to damage, and suitable for the change of the size of the sea wave. Large-scale, mature devices that are large and easy to design and manufacture have not been reported.

In short, for various reasons, a practical wave power generation system has not yet appeared. I have previously invented a similar floating rope wheel wave power generation system, but the rotating wheel of that system is placed on the underwater substrate, which causes great difficulties for future maintenance.

Summary of the invention

The object of the present invention is to provide a floating body-based sheave wave power generation system which can automatically adapt to most wave waves and has strong wind and wave resistance, low cost and easy maintenance.

The technical solution of the invention - the system comprises a wave energy collecting part, a transmission part, a generator, a base, etc., and the wave energy collecting part is responsible for converting irregular wave energy into regular available mechanical energy, and the transmission part is responsible for Using mechanical energy for transmission, the generator converts the input mechanical energy into electrical energy. The wave energy collecting part can also directly drive the generator to generate electricity without the transmission part.

The general idea of the wave energy collecting part of the system is to let the wave push the floating body to tighten the rope, and then drive the rotating wheel on the floating body to do work, output mechanical energy, and realize the wave energy collection; the wave falling stage, with a small force to turn The wheel is reversed, the rope is taken back, and the rope is pulled and closed.

The specific implementation has the following forms: the rope collecting method of the rope collecting device, the independent rope collecting mode of the pump, and the method of collecting the rope by the sensor control motor.

The first type: the rope collecting device

This is in the form of a ratchet mechanism, specifically - the collection part includes a floating body, a rope I, a runner and its main shaft, a ratchet mechanism, and a rope collecting device; one end of the rope I is attached to the base, and the other end is wound around the runner. The main shaft of the runner is mounted on the floating body, and the runner is connected to the ratchet mechanism through the main shaft. The one-way transmission direction of the ratchet mechanism is consistent with the direction of the rope of the runner, and the rope collecting device is connected with the constant current source of the rotating shaft. The DC small motor generates the same torque and the direction of the rope collection. The rope collecting device is: a small wheel connected to the spindle shaft is wrapped with a rope II. The direction of the rope II winding to the small wheel is opposite to the direction in which the rope I is wound around the wheel. The other end of the rope II is a heavy object or a piston of a spring or a cylinder, and the air pressure on the rope II side of the piston is greater than the other side. A tensile force is formed on the rope II.

For the small motor collecting method, when multiple collecting units work together, each small motor can also be connected in series to share a constant current power supply to reduce the cost.

For cylinder or spring take-up type, a pulley is added between the rope I I and the piston or spring.

For the weight collection rope and a slider for the weight stroke, the inner surface of the cylinder and the outer surface of the weight are coated with lubricating oil.

There are baffles on both sides of the runner.

The wave energy can collect part of the output power, which can be transmitted to the generator through the hydraulic transmission system or the pneumatic transmission system for power generation, or can be directly connected to the generator to generate electricity. The following ones respectively state:

A. Pneumatic transmission

The ratchet mechanism of the wave energy collecting part outputs an air pump, and the air pump draws air pressure from the atmosphere into the high pressure pipe, and the high pressure pipe leads to the gas turbine or the air motor, where the air pressure energy is converted into mechanical energy, and the generator is driven to generate electricity, and the gas is also discharged. atmosphere.

The pneumatic transmission system provides power to the generator. In the middle of the pressure pipeline from the input end of the pneumatic transmission to the output end, a branch road is branched to the subsea accumulator. The accumulator has two types of structures, one is a concrete. The air chamber has a hole at the lower end communicating with the seawater, and an upper end opening communicating with the air pipe; the other is an air bag structure, the air bag is communicated with the air pipe, the air bag is in the concrete container, and the lower end of the container has a hole communicating with the sea water.

B. Hydraulic drive

The ratchet mechanism of the wave energy collecting part is connected to the hydraulic pump. The hydraulic oil is pressed from the fuel tank into the high pressure pipe by the hydraulic pump, and then flows to the hydraulic motor, where the hydraulic energy is converted into mechanical energy, the generator is driven to generate electricity, and then the hydraulic oil is filtered. The device flows back to the tank.

The wave energy collecting part provides power to the generator through the hydraulic transmission system. Accumulators are arranged at the near input end and the output end part of the hydraulic high pressure line, and the gas in each accumulator is communicated with each other through the air pipe to realize networking. .

The hydraulic pump uses a low-speed axial piston pump or a radial piston pump.

C. Direct connection to generator power generation

The ratchet mechanism of the wave energy collecting part is connected to the DC generator, and a large inductor is connected in series on the main loop, and the main loop is a large current loop where the load is located.

The second type: pump independent rope collection

At present, many pumps can be used as motors, such as distribution plates or distribution shaft type piston pumps, so it is also possible to use the pump to automatically collect the ropes, specifically: The collection part includes the floating body, the rope I, the runner and its main shaft, and the transmission of the system. Some are hydraulic transmission systems, including pumps that can double as motors, queuing check valves, admission check valves, high pressure accumulators, medium pressure accumulators, low pressure fuel tanks, hydraulic motors, charge pumps; On the pedestal, the other end is wound on the runner, the main shaft of the runner is mounted on the floating body, the runner is connected to the pump shaft through the main shaft, the pressure line of the pump is bifurcated, and the pass through the check valve and the high-pressure accumulator In the same way, all the way through the admission check valve and the medium pressure accumulator, the suction port of the pump is connected to the low pressure tank through the suction pipe, the hydraulic motor is between the high pressure accumulator and the low pressure accumulator, and the charge pump is from the low pressure The fuel tank is pumped to the medium pressure accumulator.

The high-pressure hydraulic oil stored in the high-pressure accumulator flows to the hydraulic motor through the throttle valve, and the hydraulic motor converts the hydraulic energy into mechanical energy, which drives the generator to rotate and generate electricity. The hydraulic oil discharged from the hydraulic motor then enters the medium-pressure accumulator and flows back to the low-pressure tank through the pump in the rope-receiving stage I, and its cycle is completed.

The third type: sensor control rope collection method

Many generators can also be used as motors, such as DC generators, so it is also possible to use such generators from the main rope, specifically: The collection part includes the floating body, the rope I, the runner and its main shaft, and the monitoring wheel rotates. Directional reversing sensor, branching loop constant current power supply, relay switch, generator is DC generator or replaced by a high power generator with a DC small motor shaft; rope I end is attached to the base, the other end Wrapped around the runner, the main shaft of the runner is mounted on the floating body, the runner is connected to the generator shaft through the main shaft, and the forward and reverse sensor generates a signal to the relay switch for controlling the DC generator and The branch circuit, the DC generator and the main loop are disconnected. For the low-power motor and the high-power generator, the relay switch controls the low-power motor and the branch circuit, the high-power generator and the main ring. The access of the road is disconnected; the relay switch can also be replaced by a reed switch or FET, thyristor, the main loop is the high current loop where the load is located, and the branch loop is the small current loop where the constant current power supply of the loop is located. The small current produces the same torque on the DC generator or on the DC small motor in the same direction as the rope collection.

When a plurality of wave energy collecting units work together, for the DC generator to take the rope, if multiple generators are closed after the relay switch that controls its opening and closing with the main loop is closed, multiple generators are connected in series on one main loop. After the relay switches of the multiple generators and the branch circuit are closed, they are connected in series on one branch circuit; for the high-power generator and the DC small motor, the multiple DC small motors are controlled to connect with the branch circuit. After the open relay switch is closed, a plurality of DC small motors are connected in series on one branch circuit.

The load on the main loop is composed of an inverter, a rectifier filter, a voltage comparator and a servo motor. The structure of the inverter is: A signal generator controls two FET turns switches, and then controls two The coil wound at the input end of the transformer and the main loop are turned on and off in the opposite direction, the output end of the transformer is connected to the rectifier filter, and the voltage comparator compares the voltage outputted by the rectifier filter with the reference voltage, and outputs a control signal to the servo. Brush on the output of the motor slippery transformer.

The forward/reverse sensor determines the direction of rotation of the wheel by monitoring a turntable connected to the spindle shaft. There is a certain interval between each switch.

The rope collecting device, the pump independent rope collecting method and the sensor control rope collecting method all have the same characteristics: floating body, rope I, runner, base, main shaft, and the main shaft of the runner is on the floating body. Floating body, base, overload protector, rope I, runner and other system peripheral components:

Floating body

The floating body is a closed casing structure, and the surface of the floating body has a groove. The rotating wheel is located between the two walls of the groove, and the two ends of the main shaft are inserted into the two walls of the groove, and the sealing ring is sleeved at the socket.

The floating body can be filled with a gas having a pressure greater than atmospheric pressure.

When multiple collection units work together, multiple sheaves can share a cylindrical floating body; or in the form of a pliable surface, that is, multiple sheave units are dispersed onto different floating bodies, which are arranged in a plane, floating body and The surfaces of the floating body are made of a tensile elastic material to form a unitary, flexible surface. The easy-to-curved floating body is rounded.

This system can also be used as a floating body.

2. Base

For the base of the system: There are two types of bases, the first one is the pile foundation fixed on the seabed, and the second is the base plate suspended by the water floating body with rope in the water, one end of the rope is attached to the substrate, and the other One end is attached to the floating surface of the water surface; the position of the substrate can be fixed by anchoring, or the rope can be restrained by the underwater floating body, that is, a hole is provided on the substrate, the rope passes through the hole, and the end of the rope is On the underwater floating body that floats under water at the moment, the other end is attached to the wedge inserted on the seabed; a water resistance door can be installed on the substrate, and the water resistance door, like a door, can only open upward. The wedge is shaped like a large screw and can be screwed into the seabed and firmly bonded to the seabed.

3. Overload protector

The rope I is connected in series with an overload protector. The specific structure is as follows: one side of the rope is attached to the end cover, and the other side of the rope is attached to the bottom of the bucket-shaped sleeve. The diameter of the end cover is larger than the inner diameter of the sleeve, and the spring is used. The end cap is connected with the bottom of the sleeve, and when the end cap is placed on the sleeve, the spring is still in a tension state, and the pulling force is close to the maximum allowable pulling force of the rope I when the system is working, and the end of the telescopic tube is fixed at the end On the end cap, the other end is sleeved at the bottom of the sleeve.

4. Rope I

The part of the rope I that is impossible to wrap around the wheel near the base can be replaced with a straight rod.

5.

There are baffles on both sides of the runner. The invention has the following advantages:

1. The ability to resist wind and waves is very strong: Since the rope is a kind of flexible member, it doesn't affect the work if the waves swing up and down. The runner can put the rope very long, which is equivalent to greatly increasing the buffering distance of the wave impact, not hard against the waves, reducing the instantaneous impact force, and thus the wind and wave resistance is enhanced.

2, easy to maintain: the core part of the system floats in the floating body on the sea, only need to open the cover of the floating body during maintenance, very convenient, this is the way to put the runner and other parts on the underwater base Compared to the biggest advantage.

3, corrosion resistance, anti-leakage: The system only has floating body, rope, large wheel, part of the main shaft, the surface of the box is immersed in sea water, and these are rust-proof, others are in the box, reducing Parts that come into contact with sea water. In addition, the tank is filled with a gas that is deeper than the water at which it is placed, preventing seawater from entering the tank.

4, adapt to the waveform ability, long working time, wave energy absorption conversion ability: Because any wave of the wave is the performance of the above and below, so the floating body will work up and down under the waveform. Easy-bend or cylindrical floats reduce the energy loss caused by the flow of wave energy. In addition, due to the adaptation to various waves, the effective working time is also increased, and the overall efficiency is also high.

5, low cost: The system is simple in structure, the system's casing is a floating body, there is no costly large cement concrete facilities, no need to spend a lot of steel, if the ship is used as a floating body, the cost is further reduced.

6. The substrate is suspended in the water, so that it can get rid of the dependence on the land, and can work in the deep sea to absorb more wave energy. DRAWINGS

Figure 1: Small motor rope collection + generator structure

Figure 2: Heavy rope collection + hydraulic pump structure

Figure 3: Heavy rope collection + hydraulic pump core diagram

Figure 4: Spring rope collection + generator structure

Figure 5: Cylinder rope collection + air pump structure

Figure 6: Cylinder rope collection + air pump wave energy acquisition unit appearance

Figure 7: Floating rope sheave + subsea accumulator + pneumatic drive diagram

Figure 8: Structure of two subsea accumulators

Figure 9: Pump self-retracting rope hydraulic system diagram

Figure 10: Input to the hydraulic drive system, the actuator accumulator networking

Figure 11: Electromechanical diagram of sensor-controlled generator self-collecting

Figure 12: Sensor control DC small motor rope (generator and small motor shaft type) electromechanical diagram

Figure 13: Multi-DC generator series working circuit diagram

Figure 14: Functional Block Diagram of Multiple DC Generator Series Operating Circuits

Figure 15: Schematic diagram of the operation of the cylindrical floating body shared by the multi-rope unit

Figure 16: Overall view of the composition of the multi-floating sheave unit

Figure 17: Floating body on water + underwater floating body + wedge + detailed structure of hanging substrate

Figure 18: Floating water + underwater float + wedge + hanging substrate side view

Figure 19: Overload Protector Block Diagram —Floating body 32 — hole

- runner 33 - subsea accumulator - rope I 34 - concrete chamber a substrate 35 - spring

- ratchet mechanism 36 - generator

—Spindle 37—DC Generator and Motor—rope I I 38—Positive and Reverse Sensor—Sealing Ring 39—Relay Switch

- slide 40 - wedge

0—Hydraulic pump 41—Water resistance door

1—heavy object 42—surface float

2—small runner 43—sea surface

3—Pistons 44—sea bottom

4—Hydraulic pressure pipe 45—Stretching elastic joint surface 5—Hydraulic return pipe 46— Telescopic pipe

6— check valve 47—sleeve

7— Accumulator 48—Steel

8—Hydraulic motor 49—rope

9— Oil filter 50—DC small motor

0—tank 51—underwater buoy

1 - trachea 52 - concrete container

2—Airbag

3—pump and motor

4—High pressure accumulator

5— medium pressure accumulator

6—charge pump

7—Cylinder

8—Pulley

9- anchor

0—air pump

1—Gas turbine detailed description

The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

Summary of the invention

The specific implementation has the following forms: the rope collecting method of the rope collecting device, the independent rope collecting mode of the pump, and the sensor receiving method for collecting the rope by the generator. The first type: the rope collecting device to collect the rope (Figure 6)

This is in the form of a ratchet mechanism, specifically: The collection part includes the floating body (1), the rope I (3), the runner (2) and its main shaft (6), the ratchet mechanism (5), the rope collecting device; (3) — The end is attached to the base and the other end is wound on the runner (2). The spindle (6) of the runner (2) is mounted on the float (1) and the runner (2) is passed through the spindle (6). Connected to the ratchet mechanism (5), the one-way transmission direction of the ratchet mechanism (5) is the same as the direction of the rope release of the runner (2), and the rope collecting device is connected to the constant current source of the rotor (2). The DC small motor (50) generates the same torque and the direction of the rope. The rope collecting device or: a small wheel (12) connected to the shaft (6) is wrapped with a rope II (7), rope II (7) The direction of the small wheel (12) is opposite to the direction in which the rope I (3) is wound around the wheel (2), and the other end of the rope II (7) is attached with a weight (11) or a spring (35) or a The piston (13) of the cylinder (27) and the air pressure on the side of the rope II (7) of the piston (13) are larger than the other side, forming a tensile force to the rope II (7).

When the wave pushes the floating body (1), the floating body (1) is away from the upper base, and the rope I (3) is tightened. Because the wave thrust is large, the torque generated by the rope I (3) is much greater than that produced by the rope collecting device and Friction torque, torque imbalance causes the runner (2) to start rotating, and the runner outputs power through a ratchet mechanism (5) connected to its shaft.

1) In this process, the rotation of the runner (2) also works on the rope collecting device to drive the small motor (50) to rotate;

2) If it is a small runner (12) + rope II (7) + heavy (11) form, pull the weight (11) up;

3) If it is a small runner (12) + rope II (7) + spring (35), tighten the spring (35);

4) If it is a small runner (12) + rope II (7) + cylinder (27) piston (13), pull the piston (13). When the wave drop floating body (1) is close to the base, the rope I (3) becomes loose, at which time the torque generated by the wave thrust is reduced to near zero, the torque generated by the rope collecting device is greater than the friction torque, and the torque is unbalanced, so the runner (2) Start to rotate the rope I (3) under the action of the rope collecting device.

1) If the rope collecting device is a small motor (50) connected to a constant current source, the wheel (2) will reverse the rope collection under the torque of the small motor (50);

2) If it is a small runner (12) + rope II (7) + heavy (11), the weight (11) under the action of gravity, pull the rope II (7) to make the small wheel (12) Turn, and then drive the wheel (2) to reverse, and take the rope I (3) back;

3) If it is a small runner (12) + rope II (7) + spring (35) type, spring (35) pulls the rope 2 (7) Reverse the small wheel (12), and then drive the wheel (2) to reverse the retraction of the rope I (3);

4) If it is a small runner (12) + rope II (7) + cylinder (27), the pressure difference generated on the piston (13) pulls the rope II (7), pulls the small wheel (12), turns Wheel (2) reverses and retracts rope I (3).

During the rope collection I (3), because of the one-way transmission of the ratchet mechanism (5), the power is not output, and the check pawl of the ratchet mechanism (5) can prevent the power that has been output to the load from being transmitted back to the rotation. Wheel (2).

It is worth noting that the small motor (50) is connected to the constant current power supply because the small motor (50) may sometimes stop or even reverse. If the normal power supply is connected, the current in the small motor (50) will be very large, even Burn out small motors, so be sure to use a constant current source or a power source that limits the maximum current. When multiple floating sheave units work together, each small motor (50) can also be connected in series to share a constant current power supply to reduce costs.

Considering that the internal space of the floating body (1) may be restricted, and in order to regulate the pulling direction of the rope II (7), it may be between the rope II (7) and the piston (13), the rope II (7) and the spring (35). Add a pulley (28), for the weight (11) type, because the floating body (1) is up and down, the weight (11) will shake left and right without restriction, so it is impossible to work, so add a slider (9) for Heavy (11) Stroke restrictions are required. Lubrication is applied to the inner surface of the slide (9) and the outer surface of the weight (11) to reduce friction.

Let the runner (2) reverse the rope I (3). How much force is used depends on the friction torque and the moment of inertia. Generally, the torque of 4N-m is sufficient, and the force acting on the rope I (3) is It is about 50N. If it is a small motor (50), 120W can meet the requirements. If it is a heavy object (11), a spring (35) or a cylinder (27), set the diameter of the small wheel (12), the smaller the diameter. The smaller the stroke required for the weight (11), spring (35) or cylinder (27), the stroke is designed according to the maximum wave height. If the stroke is too short, the weight (11), spring (35), and cylinder (27) will be out of the range and will be easily damaged. Generally, the stroke is 2m, and the diameter ratio of the small runner (12) to the runner (2) is 1:6, so even if the huge wave of 12m is rushed, it can cope. If the diameter of the small runner is 25mm, the tension on the rope II (7) will be 320N. If it is a heavy rope, the weight (11) will be 32kg. For the spring (35), because the tension is linear, So take the average. For the cylinder (27), the area of the piston (13) and the pressure difference should be considered. The pressure in the housing of the floating body (1) can be used as the pressure on the side of the rope II of the piston (13), which is designed to be 0.3 higher than the atmospheric pressure. M Pa, then the piston (13) diameter must be set to 37mm.

Ratchet mechanism (5) Select the tooth type.

A. Pneumatic transmission (Figure 7)

The ratchet mechanism (5) of the wave energy collecting part outputs an air pump (30), and the air pump (30) draws air pressure from the atmosphere into the high pressure pipe, and the high pressure pipe leads to the gas turbine (31) or the air motor, where the gas pressure can be converted into mechanical energy. And drive the generator (36) to generate electricity, and the gas is also discharged into the atmosphere.

The pneumatic transmission system supplies power to the generator, and in the middle of the pressure pipeline from the input end of the pneumatic transmission to the output end, a branch road branches to the subsea accumulator (33), and the accumulator has two types of structures, one type It is a concrete air chamber (34) with a hole (32) at the lower end communicating with the seawater, an upper end opening communicating with the air tube (21), and the other being an air bag (22) structure, the air bag (22) communicating with the air tube (21), the air bag (22) In the concrete container (52), the bottom of the container has a hole (32) that communicates with the seawater. (See Figure 8)

The periodic pulse of the wave work is very large, similar to a sine half wave. The input of the pneumatic drive - the air pump (30), the pressure flow is suddenly large and small, in addition, the output of the pneumatic drive (31) or the air motor may also For some reason, sudden stop or sudden stall has caused great harm to the system. After the pneumatic pipeline is connected to the subsea accumulator, the pressure of the pneumatic pipeline is equal to the air pressure of the subsea accumulator (33), and the pressure of the subsea accumulator (33) is the same as the pressure of the submarine water depth. It is not affected by the pulse of air pressure, so the subsea accumulator (33) can regulate and eliminate the pulse. It can also store the power beyond the installed capacity of the system in large waves. The part of the energy, in the small waves, releases energy for the gas turbine (31) or the gas motor to generate electricity.

The design depth of the subsea accumulator (33) is determined according to the actual situation. If the water depth is 100m, the subsea accumulator (33) can obtain the pressure of IMPa, which is the row of the general piston compressor. The upper limit of the gas pressure, the height of the subsea accumulator (33) should not be too high, because the buoyancy effect can be considered, it can be set to 2m, so that the energy stored in the 100-square-meter subsea accumulator is 100m ² X 2mX lMpa= 2 X 10 ⁸ J, The generator for lOKw is continuously operated for 5.56 hours.

B. Hydraulic drive (Figure 10)

The ratchet mechanism (5) of the wave energy collecting portion is connected to the hydraulic pump (10), and the hydraulic oil is pressed into the high pressure pipe from the oil tank (20) by the hydraulic pump (10), and then flows to the hydraulic motor (18), where the hydraulic energy is converted into The mechanical energy drives the generator (36) to generate electricity, and then the hydraulic oil flows back to the tank (20) via the oil filter (19).

Accumulators (17) are provided at the near input and output portions of the hydraulic high pressure line, and the gases of each accumulator (17) are connected to each other through the gas pipe (21) for networking.

Due to the irregularity of the waves, the rhythm of the floating body (1) at different locations is different. There may be a floating body (1) that is rising, some is falling, and the row of the hydraulic pump (10) of the rising floating rope sheave unit The oil flow rate is large, and the oil discharge flow rate during the falling process is 0. The gas of the accumulator (17) is connected to the network, which can improve the utilization rate of the accumulator (17), and the proximity input of the hydraulic high pressure pipeline The end is connected to the accumulator at the output. When the hydraulic pulse occurs, the pneumatic transmission speed is many times faster than the hydraulic pressure, which can quickly release the hydraulic pulse energy to the output end, reducing the accumulation of hydraulic energy at the input end, reducing the pressure. The pulsation of the pressure of the hydraulic high pressure line protects the system.

The hydraulic pump (10) is preferably a piston pump, such as an axial piston pump, which requires less torque and is more efficient.

An accumulator (17) close to the input can be used by the hydraulic pumps (10) of the adjacent four wave energy collection units, and since the output of the hydraulic drive system of the system is generally only one, the accumulator close to the output, The volume to be designed is relatively large.

C. Direct connection to generator power generation (Figure 1, Figure 4)

The ratchet mechanism (5) of the wave energy collecting part is connected to the DC generator (36), and a large inductive current is connected in series on the main loop, and the main loop is the large current loop where the load is located.

Because the generator (37) outputs DC, plus the inductance on the main loop to stabilize the current, the current on the main loop is relatively constant, and the torque required by the generator (37) to generate electricity is relatively constant. 3) The tension is relatively constant, which is beneficial to design the corresponding floating body (1), rope I (3), and base according to a rated rope tension. And because of the energy storage of the inductor, the main loop still maintains a certain current during the half cycle of the generator (37) leaving the main loop. When the generator (37) is reconnected, it flows through The current of the generator (37) immediately jumps from the small current of the original branch circuit to the large current of the main loop, so that it can enter the working state faster.

The selected power rating of the DC generator can be determined according to the maximum power collected by the sheave unit. This also takes into account the local wave conditions. If the maximum wave is 10m and the cycle is 8s, the design tension of the rope I (3) is 5000N. The power of the DC generator is 19. 6KW. The rated power of the DC generator is 19. 6KW. When working normally, the current of the generator is kept at about 0.9 times of the rated current. For example, if the rated voltage of the generator is 220V, the rated current is 89A. In actual operation, the current of the main loop is kept at 80A. about.

The second type: pump independent rope collection method (Figure 9)

At present, many pumps can be used as motors, such as axial piston pumps with distribution plates or distribution shafts, radial piston pumps, so pumps can also be used to collect ropes, specifically: The collection part includes floating body (1), rope I (3), runner (2) and its main shaft (6), the transmission part of the system is hydraulic transmission system, including pump (23), quasi-out check valve, admission check valve, high pressure storage Energy device (24), medium pressure accumulator (25), low pressure fuel tank (20), hydraulic motor (18), charge pump (26); rope I (3) one end is attached to the base, and the other end is wound around On the wheel (2), the main shaft (6) of the runner (2) is mounted on the floating body (1) Above, the runner (2) is connected to the pump (10) through the main shaft (6), the pressure line of the pump is bifurcated, and the first pass through the queuing check valve to communicate with the high-pressure accumulator (24), all the way through the access order The valve is connected to the medium-pressure accumulator (25), the suction port of the pump (10) is connected to the low-pressure tank (20) via the suction pipe, and the hydraulic motor (18) is interposed between the high-pressure accumulator (24) and the low-pressure accumulator Between the (25), the charge pump (26) draws oil from the low pressure tank (20) to the medium pressure accumulator (25).

When the wave pushes the floating body, the floating body (1) is away from the base, the rope I (3) is tightened, and then the rotating wheel (2) is rotated, and the rotating wheel (2) drives the pump (23) connected to its shaft to rotate, the pump ( 23) Pumping oil from the low-pressure fuel tank (20), pressurizing the check valve into the high-pressure accumulator (24) to convert the mechanical energy into hydraulic energy; since the admission check valve only allows the hydraulic oil to enter the pump ( 23), so this process hydraulic oil can not enter the medium pressure accumulator (25);

The high-pressure hydraulic oil stored in the high-pressure accumulator (24) flows through the throttle valve to the hydraulic motor (18). The hydraulic motor (18) converts the hydraulic energy into mechanical energy, and drives the generator (36) to rotate to generate electricity. Hydraulic motor (18) The discharged hydraulic oil enters the medium pressure accumulator (25).

When the wave falls, the floating body (1) is close to the base, and the rope I (3) becomes loose. At this time, the pressure of the oil outlet of the pump (23) is lowered, and since the check valve is only allowed to be out of the hydraulic oil, the hydraulic oil is not allowed to enter. The oil in the high-pressure accumulator (24) cannot be reversed. Since the pressure of the low-pressure tank (20) is lower than the pressure of the medium-pressure accumulator (25), the hydraulic oil is opened under the action of the differential pressure. The pump (23) is injected with oil, at which point the pump (23) becomes the motor, and the pump (23) drives the runner (2) against the differential pressure of the medium-pressure accumulator (25) and the low-pressure tank (20). Rotate to retract the rope I ( 3). At this point, the hydraulic oil flows back to the low pressure tank (20) through the oil filter (19), and its circulation is completed.

It should be added that the hydraulic oil of the medium-pressure accumulator (25) for reversing the pump (23) comes from the pump (23) itself pressed into the high-pressure accumulator (24) due to the leakage of the pump (23). The volumetric efficiency cannot be 100%. In the long run, the hydraulic oil can't meet the amount required for the pump (23) to reverse, so add a charge pump (26), and the charge pump draws hydraulic oil from the low pressure tank (20) to the middle. The accumulator (25) is pressurized to supplement the amount of oil in the medium pressure accumulator (25).

The pressure of the high-pressure accumulator (24) is designed to be 30 MPa, and the pressure of the medium-pressure accumulator (25) is set to 0.5 MPa. In addition, for safety reasons, an overflow valve should be added at both ends of the hydraulic motor, and a throttle valve should be added to the high pressure line.

The third type: sensor control generator rope collection method (Figure 1 wide picture 12)

Many generators can also be used as motors, such as DC generators, so it is also possible to use such generators from the main rope, specifically: The collection part includes the floating body (1), the rope I (3), the runner (2 ) and its main shaft (6), positive and negative sensor (38) for monitoring the direction of rotation of the rotor, constant current power supply for branch circuit, relay switch (39), generator for direct current generator (37) or power generation with one high power The machine is replaced by a DC small motor (50) shaft; the rope I (3) is terminated on the base, the other end is wound on the runner (2), and the spindle (6) of the runner (2) is mounted on the float (1) On, the runner (2) is connected to the generator shaft through the main shaft (6), and the forward/reverse sensor (38) generates a signal to the relay switch (39) for controlling the DC generator (37) and the branch circuit. The DC generator (37) is disconnected from the main loop. For the low-power motor (50) and the high-power generator, the relay switch (39) controls the low-power motor (50) and the support ring. Road, high power generator (36) disconnected from the main loop; relay The switch (39) can also be replaced by a reed switch or FET, thyristor, the main loop is the high current loop where the load is located, the branch loop is the small current loop where the constant current power supply of the loop is located, and the small current is in the direct current. The torque generated on the generator (37) or on the DC small motor (50) is the same as the direction of the rope collection.

When the wave pushes the floating body (1), when the floating body (1) is away from the base, the rope I (3) is tightened to drive the rotating wheel (2) to rotate forward, and the forward and reverse sensor (38) detects the rotating wheel (2) Forward, send a signal to the relay control switch (39), switch the generator (37) to the main loop, and supply power to the main loop. For the high-power generator (36) and the DC small motor (50), the signal is sent to the relay switch (39) to connect the high-power generator (36) to the main loop to generate electricity, and the DC small motor ( 50) Disconnected from the branch circuit.

Figure 11 shows the electromechanical diagram of the DC generator-motor switching back and forth. At this time, db and ec are connected, and the generator is switched into the main loop. Figure 12 shows the electromechanical diagram of the high-power generator and the small DC motor. At this time, be is turned on, fd is turned on, the high-power generator (36) is switched to the main loop, and the small DC motor (50) is disconnect.

In the above two methods, a double-throw switch mode is used. In this mode, a circuit breaking moment occurs in the loop, which is easy to generate high voltage, which also affects the life of the relay switch. Therefore, the relay switch is prone to high voltage. of The varistor is connected in parallel at both ends.

The switching mode of Figure 13 avoids this situation. At this time, blcl and c2dl are connected first, the generator is connected to the main loop at both ends, and a parallel branch is formed with one wire, and then the middle of the wire The switch (al) is also disconnected under the control of the relay (39) so that the rotating generator (37) switches to the main loop. In this case, because there is a parallel branch, there is no open circuit in the loop, and the voltage across the relay switch is not too high.

When the floating body (1) reaches the farthest point and starts to approach the pedestal, the rope I (3) becomes loose, the runner (2) stops and even reverses under the torque generated by the current, and the positive and negative sensor (38) detects Send a signal to the relay control switch (39), send a signal to switch the DC generator-motor (37) into the branch circuit, and drive the wheel (2) to reverse the small current provided by the branch circuit power supply. I (3) Retraction; For the high-power generator and DC small motor coupling mode, send a signal to the relay switch (39) to disconnect the high-power generator (36) from the main loop, and the DC small motor (50) Connected to the branch circuit, under the small current provided by the branch loop power supply, the DC small motor (50) drives the runner (2) to reverse, and the rope I (3) is retracted.

For Figure 11, the ad and be are connected, and the generator is switched into the branch circuit.

For Figure 12, ae is turned on, fc is turned on, the high power generator (36) is disconnected from the main loop, and the small DC motor is switched into the branch loop (50).

For Figure 13, at this time, b2cl and c2d2 are connected first, the generator is connected to the main loop at both ends, and a parallel branch is formed with one wire, and then the switch (a2) in the middle of the wire is also in the relay (39). Disconnected under control. Connect the switches at both ends of the generator (37) to the two ends of a segment of the branch circuit. Then the switch in the middle of the line is also disconnected under the control of the relay (39). At this time, the power supply in the branch circuit is provided. The small current, instead of taking the wire, and changing the generator (37)), let the generator (37) acting as the motor at this time drive the reel (2) to reverse and take the rope I (3) back.

When multiple wave energy collection units work together, for the DC generator (37) to take the rope, if multiple generators are closed after the relay switch (39) that controls it to open and close with the main loop, multiple generators Connected in series on a main loop, after the relay switches (39) of multiple generators and branch circuits are closed, they are connected in series on one branch loop; for high-power generators and DC small motors (50), more After a small DC motor (50) is closed, a plurality of DC small motors are connected in series on a branch circuit after the relay switch (39) that controls its opening and closing with the branch circuit is closed. (See Figure 13)

Multiple sheave units work together. In order to reduce costs, the DC generator (36) shares a main loop in series, the loop voltage is the sum of the voltages of all the generators (36), and the floating sheave unit is preferably spaced in the wave direction. The distance is arranged, but not on a column line, so some are in the crest, some are in the trough, such part of the generator (36), part of it does not work, the overall voltage can be relatively constant, reducing voltage and current fluctuations, can also save The amount of inductance used.

The load on the main loop is composed of an inverter, a rectifier filter, a voltage comparator and a servo motor. The structure of the inverter is: A signal generator controls two FET turns switches, and then controls two The coil wound at the input end of the transformer and the main loop are turned on and off in the opposite direction, the output end of the transformer is connected to the rectifier filter, and the voltage comparator compares the voltage outputted by the rectifier filter with the reference voltage, and outputs a control signal to the servo. Brush on the output of the motor slippery transformer. (See Figure 14)

Because the seawater outside the shell of the floating body (1) is surging and corrosive, and the forward/reverse sensor (38) is difficult to work, the direction of rotation of the runner (2) is generally judged by monitoring a turntable connected to the shaft of the main shaft (6). .

It should be noted that in order to prevent the "swing" phenomenon when the generator (37) is switched, the so-called "swing" phenomenon is that the force exerted by the wave on the floating body (1) on the generator (37) is between When the current of the branch circuit is between the torque generated by the generator (37) and the current of the main loop to the torque of the generator (37), when switching to the main loop, the main loop current generates a torque greater than the wave generating torque. The runner (2) is in the state of collecting the rope I (3). When switching to the branch circuit, the torque generated by the branch circuit is smaller than the torque generated by the wave, and the runner (2) is in the state of the rope I (3). Then switch to the main loop again, so fast and frequent switching, this is the swing phenomenon, so it is necessary to switch each interval by a certain interval, about 0.3 seconds. The rope collecting device, the pump independent rope collecting method and the sensor control rope collecting method have the same characteristics: the floating body, the rope I, the runner, the base, the main shaft, and the main shaft of the runner is on the floating body. System peripheral components such as floating body, base, overload protector, rope I, runner, etc.:

Floating body

In order to achieve good corrosion resistance, the floating body (1) is a closed casing structure, the rope I (3), the runner (2), and the main shaft (6) are outside the casing, and the floating body (1) has a groove on the surface casing. The wheel (2) is located between the two walls of the groove, and the two ends of the main shaft (6) are inserted into the two walls of the groove, and the sealing ring (8) is sleeved at the socket.

The floating body (1) can be filled with a gas having a pressure greater than atmospheric pressure, so that it is impossible for the seawater to enter the floating body (1) to corrode the system, and for the above-mentioned cylinder type rope collecting device, the air pressure of the inner cavity of the floating body (1) It can serve as a pressure supply task for the rope side of the cylinder (27) piston (13), which on the one hand can simplify the cylinder (27) and reduce the cost. On the other hand, the volume of the inner cavity of the floating body (1) is large, in the piston (13) When sliding back and forth, it will not cause too much fluctuation of the air pressure, which is conducive to the constant tension of the rope I ( 3 ). This has been mentioned before.

When multiple collection units work together, multiple sheaves can share a cylindrical floating body (Fig. 15, 1); or in the form of a flexible surface (Fig. 16), that is, multiple sheave units are dispersed to different floating bodies (1) Above, the floating bodies (1) are arranged in a plane, and the floating body (1) and the floating body (1) are joined by a surface (45) made of a tensile elastic material to form an integral flexible surface ( Figure 16), the float (2) is rounded. (See Figure 15^16)

The cylindrical floating body (Fig. 15, 1) has strong ability to withstand the storm. In the case that the wave has turned the floating body, the floating body can still generate the turning torque under the tension of the rope I (3) and return to the normal working state. In the form of a curved surface (Fig. 16), the flow of wave energy can be avoided, the absorption efficiency of the wave impact force can be improved, and a larger wave impact force can be obtained with a smaller floating body.

In fact, the system can also use the ship as a floating body, which also reduces part of the cost. For the ship itself, it can use the sea wave to generate electricity without using a diesel engine.

The floating body (1) can be made of FRP, or steel plate, dipped or paste glass. The lower part of the floating body (1) is to be subjected to impact force and downward pressure of the main shaft. Therefore, two angle steels or beams are laid. Through the floating body, the main shaft (6) bracket of the runner (2) is placed on the beam.

The size of the floating body (1) depends on the design power, which determines the amount of power collected. For a cylindrical floating body (Fig. 15, 1), it can be designed to have a diameter of 1.5 m, and a sheave unit is arranged every 2 m width. The rated working tension of the rope I is 10 ⁴ N, for the easy-bend surface (Fig. 16) The volume of the floating body (1) can be smaller than that required for the rated rope I tensile force, but the thickness of the tensile elastic material interface (45) must meet the requirements. Generally, it can be made of rubber, in order to prevent aging caused by sunlight and with the floating body ( 1) Friction between the two causes abrasion, and a layer of shading and anti-wear material can be applied on it. The four corners of the floating body (1) are also rounded to avoid stress concentration and tear the rubber.

2. Base

For the base of the system: The base has two forms, the first is the pile foundation fixed on the seabed, and the second is the substrate suspended by the water surface float (42) suspended in the rope (49) (4) The end of the rope (49) is attached to the substrate (4), and the other end is attached to the surface floating body (42); the substrate (4) can be fixed by anchoring or by the underwater floating body (51). The rope (49) is limited to a hole (32) on the base plate (4), the rope (49) is passed through the hole (32), and one end of the rope (49) is floated under the sea surface (43) at the moment. On the underwater floating body (51), the other end is attached to the wedge (40) inserted on the seabed (44); (Fig. 17^18)

The wedge (40) is a large screw-like shape that can be screwed into the seabed (44) and firmly joined to the seabed (44).

Due to the influence of tidal drop, the first type of pedestal is only suitable for the form without the restriction of the rope stroke, such as the small motor (50) above, the type of pump (23), the method of self-collecting and the sensor-controlled generator. (37) The rope collection method is not suitable for heavy (11), spring (35) and cylinder (27). They can be used in the second type - suspended substrate form, the substrate (4) is suspended by the surface floating body (42) on the water surface, so the vertical position follows the surface floating body (42), and when the tide rises, the surface float ( 42) Ascending, the substrate also rises. When the tide is low, the floating surface float (42) falls, the substrate (4) also falls, and the distance between the substrate (4) and the sea surface (43) remains constant.

The horizontal position of the base plate (4) is limited by the perforation (32) of the rope (49), since the underwater floating body (51) on the rope (49) is directly under the water surface (43), the rope (49) is always Is in tension, so the substrate (4) is If the horizontal movement necessarily encounters the obstruction of the rope (49), the substrate (4) moves the rope (49) up and down without limitation. Because the rope is a flexible member and has a high degree of freedom, the suspended substrate structure can cope with a catastrophic storm. Because the substrate is movable, the action time of the force can be prolonged, thereby reducing the force of the wave on it. .

A water resistance door (41) can be mounted on the base plate (4). The water resistance door (41), like a door, can only be opened upwards. Thus, when the plurality of strings I (3) pull the substrate (4), the resistance of the water will be large, hindering the rise of the substrate (4), but after all, it will rise a certain distance, when the tension of the rope I (3) becomes small. The substrate (4) should be returned, otherwise the substrate (4) will be continuously moved up, of course, the gravity of the substrate (4) can be increased, but in order to save material, a water resistance gate (41) is provided, which can Reducing the sinking resistance of the substrate (4) is equivalent to increasing the weight of the substrate (4). The position of the substrate (4) in the vertical direction is more determined by the floating surface float (1) that suspends it, and the others are disturbed by it. In order to avoid the huge impact force caused by the wave on the surface floating body (1) of the suspended substrate (4) and the buoyancy caused by the ups and downs of the wave, the substrate is stabilized, and the floating surface floating body (1) is made into a thin cylinder. shape.

The base plate (4) can be made of seawater cement concrete with a thickness of 50mm, but it should also be ribbed to increase the rigidity. The area depends on the area of the floating body (1) on the sea surface. If the area of the floating body (1) is 1000mX 5m, Then, the substrate (4) is also laid at 1000 mX 5 m. In order to ensure the stability of the substrate (4), the ropes of the surface floating body (42) are attached to the four corners of the substrate (4). The surface floating body (42) can be made into a cylinder with a diameter of 500 mm and a height of 3 m. The underwater float (51) can be made with a hard extruded foam ball. The horizontal position of the base plate (4) can be fixed by two ropes (49) with underwater floats (51) to prevent drift and prevent rotation. The rope (49) is made of nylon rope and is resistant to corrosion. The wedge (40) can be made of carbon steel coated ceramic. The water resistance door (41) is also made of seawater cement concrete.

3. Overload protector

Because the waves are unpredictable, sometimes powerful, so just in case, the rope I ( 3) is connected in series with an overload protector. The specific structure is: One side of the rope I is attached to the end cover (48), One side of the rope I (3) is attached to the bottom of the bucket-shaped sleeve (47), and the end cap (48) has a larger diameter than the sleeve (47). The end cap (48) and the sleeve are spring (35). 47) The bottom of the joint is connected, and when the end cap (48) is placed on the sleeve (47), the spring (35) is still in tension, and the pulling force is close to the maximum allowable rope I (3) when the system is working. Tension, the telescopic tube (46) is sleeved on the end cap (48) and the other end is sleeved on the bottom of the sleeve (47). (See Figure 19)

Normally, the tension of the rope I ( 3) is less than the allowable value, that is, less than the tension of the preload spring (35), the spring (35) will not be stretched again, but when the tension of the rope I ( 3 ) suddenly exceeds for some reason When the value is allowed, the spring (35) pulls out and the spring (35) stretches and cushions, thus protecting the system. When the tension of the rope I ( 3) returns below the allowable value, the spring (35) is reset. The end cap (48) is reattached to the sleeve (47). The extension tube (46) protects the inner end cap (48), sleeve (47), and spring (35) from corrosion.

If the allowable pull limit of the rope I ( 3) is 10 ⁴ N, the preload tension of the spring (35) is close to 10 ⁴ N. The telescopic tube (46) is made of a rubber material and wrapped around the wire if necessary.

4. Rope I (3)

The diameter of the rope I ( 3) depends on the design tension and material. If it is 5000N or nylon rope 66, it will be 12, if it is coated with steel wire rope, it can be finer. Nylon ropes are not as rigid as wire ropes, and their life is not good either. Since the rope I ( 3) is not likely to be wound around the runner ( 2 ) in the portion close to the base, it can be replaced by a straight rod which has good rigidity and can be made of carbon steel coated with FRP.

5. Runner (2)

The middle part of the runner (2) should be recessed into a groove with a baffle on the side so that the rope I (3) is not easily wrapped around. The diameter of the runner (2) can be designed to be 150mm and the groove width is 100mm. It should also be made of corrosion-resistant materials. Carbon steel can be coated with nylon or tetrafluoroethylene.

Claims

A wave power generation system, comprising a wave energy collecting part, a generator, and a base, wherein: the collecting part comprises a floating body, a rope I, a rotating wheel and a main shaft thereof, a ratchet mechanism, and a rope collecting device; On the pedestal, the other end is wound on the rotating wheel, the main shaft of the rotating wheel is mounted on the floating body, the rotating wheel is connected to the ratchet mechanism through the main shaft, and the one-way transmission direction of the ratchet mechanism is consistent with the direction of the rope releasing of the rotating wheel, and the rope collecting device It is a DC small motor connected to the rotating shaft with a constant current power supply. The torque is generated in the same direction as the rope collecting. The rope collecting device is: a small rotating wheel connected to the main shaft is wrapped with a rope II, and the rope II is wrapped around a small rope. The direction of the runner is opposite to the direction in which the rope I is wound toward the runner. The other end of the rope is tied with a heavy object or a spring or a cylinder piston. The rope Π-side air pressure of the piston is greater than the other side, forming a pulling force on the rope II. .

The wave power generation system according to claim 1, wherein: the wave energy collecting portion supplies power to the generator through the pneumatic transmission system, and splits a pipe in the middle of the pressure pipe from the input end of the pneumatic transmission to the output end. The road leads to the subsea accumulator. The accumulator has two types of structures. One is a concrete air chamber, the lower end has a hole communicating with the sea water, the upper end is open to communicate with the air pipe, and the other is an air bag structure, and the air bag is connected to the air pipe. The airbag is in a concrete container, and a hole at the lower end of the container communicates with the seawater.

The utility model relates to a wave power generation system, which comprises a wave energy collecting part, a transmission part, a generator and a base. The collecting part comprises a floating body, a rope I, a rotating wheel and a main shaft thereof, and the transmission part of the system is a hydraulic transmission system. Including a pump that can double as a motor, a check-out check valve, a check-in check valve, a high-pressure accumulator, a medium-pressure accumulator, a low-pressure fuel tank, a hydraulic motor, a charge pump; one end of the rope I is attached to the base, and the other end Wrapped around the runner, the main shaft of the runner is mounted on the floating body, the runner is connected to the pump shaft through the main shaft, the pressure line of the pump is bifurcated, and one pass through the quasi-out valve to communicate with the high-pressure accumulator, one way through the access The one-way valve is connected to the medium-pressure accumulator. The suction port of the pump is connected to the low-pressure fuel tank via the suction pipe. The hydraulic motor is interposed between the high-pressure accumulator and the low-pressure accumulator. The charge pump pumps oil from the low-pressure fuel tank to the medium-pressure. Accumulator.

The wave power generation system according to claim 1 or 3, wherein: the wave energy collecting portion is powered by the hydraulic transmission system to the generator, and is disposed at the near input end and the output end portion of the hydraulic high pressure line. The accumulator, the gas in each accumulator is connected to each other through the trachea to achieve networking.

A wave power generation system, comprising a wave energy collecting part, a generator, and a base, wherein: the collecting part comprises a floating body, a rope I, a rotating wheel and a main shaft thereof, a positive and negative sensor for monitoring a rotating direction of the rotating wheel, and a branch The loop constant current power supply, the relay switch, the generator is a DC generator or a high power generator is replaced with a DC small motor shaft; the rope I is attached to the base at one end and wound on the runner at the other end, the runner The main shaft is mounted on the floating body, the runner is connected to the generator shaft through the main shaft, and the forward and reverse sensor generates a signal to the relay switch for controlling the disconnection of the DC generator and the branch circuit, the DC generator and the main loop. For the connection mode of small power motor and high power generator, the relay switch is used to control the disconnection of the small power motor and the branch circuit, the high power generator and the main loop; the relay switch can also be used for the reed switch or the field. The effect tube and the thyristor are replaced, the main loop is the large current loop where the load is located, and the branch loop is the small current loop where the constant current power supply of the branch loop is located, and the small current is Generating torque in the same direction on the closing rope stream generator or a small DC motor.

The wave power generation system according to claim 5, wherein when the plurality of wave energy collecting units work together, the method for collecting the ropes of the DC generator, such as the plurality of generators controlling the connection with the main loop After the disconnected relay switch is closed, multiple generators are connected in series on one main loop. After the relay switches of multiple generators and branch circuits are closed, they are connected in series on one branch loop; for high-power generators and DC small motors In the case of a multi-axis small motor, after a relay switch that controls its opening and closing with the branch circuit is closed, a plurality of DC small motors are connected in series on one branch circuit.

The wave power generation system according to claim 1, 3 or 5, wherein: the floating body is a closed casing structure, the surface of the floating body has a groove, and the rotating wheel is located between the two walls of the groove, the main shaft Both ends are inserted into the two walls of the groove, and the socket is provided with a sealing ring.

An ocean wave power generation system according to claim 7, wherein: when the plurality of collection units work together, the plurality of sheaves can share a cylindrical floating body; or in the form of a pliable surface, that is, a plurality of sheaves The cells are dispersed onto different floating bodies. The floating bodies are arranged in a plane, and the surfaces of the floating body and the floating body are made of a tensile elastic material to form an integral and flexible surface.

A wave power generation system according to claim 1, 3 or 5, wherein: the base has two forms, the first The type is a pile foundation fixed on the seabed, and the second type is a substrate suspended by water on the surface of the floating body with a rope. One end of the rope is attached to the substrate, and the other end is attached to the floating surface of the water surface; the position of the substrate can be fixed by anchoring. Alternatively, the rope can be restrained by the underwater floating body, that is, a hole is provided on the substrate, and the rope passes through the hole, and one end of the rope is attached to the underwater floating body at the moment, and the other end is tied to Inserted on the wedge on the seabed; a water resistance door can be installed on the substrate, the water resistance door, like a door, the door can only be opened upwards.

The wave power generation system according to claim 1, 3 or 5, characterized in that: the rope I is connected in series with an overload protector, and the specific structure is: one side of the rope is attached to the end cover, and the other side The rope is attached to the bottom of the bucket-shaped sleeve. The diameter of the end cap is larger than the inner diameter of the sleeve. The end cap is connected with the bottom of the sleeve by a spring, and the spring is still under tension when the end cap is placed on the sleeve. The pulling force is close to the maximum allowable pulling force of the rope I when the system is working. One end of the telescopic tube is fixed on the end cover, and the other end is fixed on the bottom of the sleeve.