Nodding duck wave energy power generation system and working method thereof

Abstract

The present invention relates to a nodding duck wave energy power generation system and a working method thereof. The system unit of the system includes a duck power generation device, which includes a water drop-shaped shell, a permanent magnet motor, an inner ring bracket, a control belt, and a power transmission pipeline. The shell is penetrated by a power transmission pipeline, and the two swing relative to each other. The stator coil in the permanent magnet motor is fixed to the power transmission pipeline in the shell. The rotor part in the permanent magnet motor forms a unidirectional rotation when it swings back and forth with the inner ring bracket. The inner ring bracket is provided with an elastic and retractable control belt between the shell and the shell to link the two to rotate and limit the relative rotation stroke between the two. The working method is: when the shell swings with the wave movement, the shell swings with the inner ring bracket through the control belt, and the inner ring bracket links the permanent magnet motor to realize power generation, and leads to the outside of the shell through the power generation output lead in the power transmission pipeline, and is used as the power supply for the electrical part. The above structure is relatively simple, the mechanical transmission is stable and reliable, and the power conversion efficiency is high.

Description

Technical Field

[0001] The invention relates to the field of ocean power generation and is a nodding duck type wave energy power generation system and a working method thereof. Background Art

[0002] The existing wave energy conversion to electrical energy is mostly based on two principles: one is to make an object sink and float and sway left and right under the action of wave force, and then convert it into mechanical energy and electrical energy; the other is to convert the kinetic energy of the wave into the potential energy of the wave through high and low ramps, and then convert the potential energy into mechanical energy and electrical energy. The existing duck-type power generation device adopts the first principle mentioned above, but most of the existing duck-type power generation devices use hydraulic drive to drive the hydraulic cylinder piston to reciprocate, and the hydraulic energy converted into hydraulic oil impacts the hydraulic motor to rotate unidirectionally, driving the rotating motor to generate electricity. The main disadvantages of the above structure are that the structure is relatively complex, the cost is high, the mechanical error is large, resulting in low energy conversion efficiency, and because the overall structure is mostly fixed and cannot be adjusted, the resistance to wave impact and seawater corrosion is poor, and the service life is relatively short. For this reason, the existing duck-type wave energy power generation device needs to be improved. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a nodding duck wave energy power generation system and its working method to the art, so as to solve the technical problems of the existing similar devices or systems, such as complex structure, high cost, large mechanical error, low conversion efficiency, poor resistance to wave impact and seawater corrosion, and short service life. The purpose is achieved through the following technical solutions.

[0004] A nodding duck wave energy power generation system, wherein the system unit of the wave energy power generation system comprises a mechanical part, and the structural key point is that the main body of the mechanical part is a duck-type power generation device, and the duck-type power generation device comprises a water drop-shaped shell, a permanent magnet motor, an inner ring bracket, and a power transmission pipeline. The permanent magnet motor and the inner ring bracket are both located in the shell, and the power transmission pipeline runs through the shell, and the shell is positioned and swung relative to the power transmission pipeline. The power transmission pipeline serves as a fixed bracket for the stator coil in the permanent magnet motor, and the power generation output lead of the stator coil is led out to the outside of the shell by the power transmission pipeline; the inner rotor part of the permanent magnet motor and the inner ring bracket are in a one-way transmission cooperation, that is, the rotor part of the permanent magnet motor forms a one-way rotation when the inner ring bracket reciprocates and swings, and the inner ring bracket is positioned and swung relative to the shell, and an elastic and retractable control belt is provided between the outer ring of the inner ring bracket and the shell to rotate the two in a linked manner and limit the relative rotation stroke between the two, and one end of the control belt is fixed to the outer ring of the inner ring bracket, and the other end is fixed to the inside of the shell. Through the above structure, the permanent magnet motor can be rotated to generate electricity by relying on the swing of the shell. The mechanical structure is relatively simple, the energy conversion efficiency is high, and a better power generation effect is achieved. The control belt plays a role in buffering and limiting the swing of the shell. By controlling the tensile deformation of the belt, the impact of excessive waves is effectively offset, thereby preventing the shell from swinging too far and overturning and failure, ensuring the stability and reliability of the duck-type power generation device.

[0005] The outer ring of the permanent magnet motor rotor part is provided with a ratchet structure, and the inner ring bracket is provided with a pawl structure that cooperates with the ratchet structure when rotating, that is, the one-way transmission cooperation is formed by the combination of the ratchet structure and the pawl structure. This structure is an embodiment structure in which the inner ring bracket reciprocates to drive the permanent magnet motor to rotate in one direction.

[0006] The transmission pipeline is provided with an electrical part, which includes a rectifier filter circuit, a voltage stabilizing circuit and an inverter circuit. The power generation output lead of the permanent magnet motor is connected to the rectifier filter circuit, the rectifier filter circuit is connected to the voltage stabilizing circuit, the voltage stabilizing circuit is connected to the battery and the inverter circuit, the inverter circuit is coupled to the transformer, and the transformer output is used as the power supply for the load. Through this circuit structure, reliable and stable power output is achieved.

[0007] The rectifier and filter circuit is a three-phase bridge rectifier and filter circuit, the voltage regulator circuit is a 12V voltage regulator circuit, and the transformer transforms the output voltage of the inverter circuit to 220V. This structure is an implementation structure of a specific circuit.

[0008] The mechanical part includes a platform device, which includes a horizontal telescopic part and a vertical lifting part. The main body of the horizontal telescopic part is a compass-shaped bracket body arranged horizontally, that is, two symmetrical horizontal brackets are hinged at one end each to the support to form a horizontal swing, and a spring support frame located between the two horizontal brackets is integrated in the middle of the support along the horizontal direction, and a reset spring with elastic force located in the horizontal direction is connected between the two sides of the spring support frame and the corresponding horizontal bracket; the vertical lifting part includes a vertical pole and a floating pile, the upper end of the vertical pole is fixedly connected to the support, and the lower end forms a telescopic fit with the sleeve column provided on the floating pile, and the sleeve column is provided with slots radially conductive with the sleeve hole in the sleeve column distributed along a circumferential array, and the length of the slot is consistent with the telescopic stroke of the vertical pole in the sleeve column; the duck-type power generation device is fixed to the horizontal bracket through the power transmission pipeline. Through this structure, the wave energy power generation system can realize adaptive adjustment of the wave front angle and the working water surface height according to the sea conditions and the sea level, thereby improving the energy conversion efficiency of the power generation system and the overall working stability and safety. It has good resistance to wave impact and seawater corrosion, effectively reducing maintenance costs and extending service life.

[0009] The horizontal support is fixedly arranged with at least one duck-type power generation device in a horizontal direction, and each duck-type power generation device is fixed to the horizontal support through a common power transmission pipeline. With this structure, the power generation efficiency is improved.

[0010] The support of the bracket body is provided with any one or more combinations of an energy storage device, an energy conversion device, and an energy transmission device for collecting or using the electric energy of the duck-type power generation device. Through this structure, the electric energy of the duck-type power generation device is effectively output and used.

[0011] The wave energy power generation system is a multi-machine parallel structure, that is, more than one system unit is connected in parallel to form a power generation platform. Through this structure, better power generation applications can be achieved.

[0012] The working method of the wave energy power generation system is as follows: when the sea conditions are high, the symmetrical horizontal brackets in the horizontal telescopic part of the platform device compress the reset spring to form an angle contraction; when the sea conditions are low, the symmetrical horizontal brackets are opened with the reset springs to form an angle increase; when the vertical lifting part changes with the sea level, the vertical poles are telescoped relative to the floating piles to keep the duck-type power generation device located on the working water surface; when the shell of the duck-type power generation device swings with the wave movement, the shell is linked to the inner ring bracket through the control belt to swing, and the inner ring bracket is linked to the rotor part of the permanent magnet motor to rotate, and forms a magnetic flux line cutting with the stator coil part to generate an induced electromotive force to achieve power generation, and finally the power generation output lead in the transmission pipeline is led out to the outside of the shell to be used as power supply for external loads.

[0013] When the housing is linked to the inner ring bracket by the control belt, the control belt is elastically deformed under the action of the inner ring bracket's swing resistance and gravity inertia. When the control belt is extended, it forms a pulling force on the housing, providing a swing restoring force for the housing, thereby achieving the purpose of limiting the housing's swing. In this way, the housing can be effectively prevented from swinging excessively and causing overturning failure.

[0014] The overall structure of the present invention is relatively simple, the mechanical transmission is relatively stable and reliable, the electric energy conversion efficiency is high, and it has the function of adapting to sea conditions and sea levels, thereby effectively improving the resistance to wave impact and seawater corrosion, reducing maintenance costs, and increasing service life. It is suitable for use as a power generation system for marine power generation, or a structural improvement of similar power generation systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a specific embodiment of the present invention.

[0016] Figure 2 It is a schematic diagram of the internal structure of the duck-type power generation device of the present invention.

[0017] Figure 3 yes Figure 1 Schematic diagram of the partial split structure.

[0018] Figure 4 It is a circuit diagram of the electrical part of the present invention.

[0019] Figure 5 It is a reference diagram of the multi-machine parallel circuit of the present invention.

[0020] The serial numbers and names in the figure are: 1. duck-type power generation device, 101. shell, 1011. boss, 102. inner ring bracket, 103. permanent magnet motor, 104. control belt, 105. transmission pipeline, 2. bracket body, 201. support, 202. horizontal bracket, 203. spring support frame, 3. reset spring, 4. vertical pole, 5. floating pile, 501. casing column, 502. slot, 503. casing hole, 6. rectifier filter circuit, 7. voltage stabilizing circuit, 8. inverter circuit, 9. battery. DETAILED DESCRIPTION

[0021] The present invention will now be further described with reference to the accompanying drawings.

[0022] like Figure 1-Figure 3As shown, the system unit of the nodding duck wave energy power generation system includes a mechanical part, and the mechanical part includes a duck-type power generation device 1 and a platform device. The duck-type power generation device includes a water drop-shaped housing 101, a permanent magnet motor 103, an inner ring bracket 102, a control belt 104, and a power transmission pipeline 105, and the permanent magnet motor, the inner ring bracket, and the control belt are all located in the housing. The power transmission pipeline runs through the housing, and the housing is positioned and swung relative to the power transmission pipeline to form a nodding duck structure, and a corresponding rotating seal is provided at the positioning and swinging position. The stator coil in the permanent magnet motor is sleeved and fixed to the power transmission pipeline of the housing, and the power generation output lead of the stator coil is led out of the power transmission pipeline to the outside of the housing. The inner rotor part of the permanent magnet motor and the inner ring bracket are in a one-way transmission match, that is, the outer ring of the rotor part of the permanent magnet motor is provided with a ratchet structure, and the inner ring bracket is provided with a pawl structure that cooperates with the ratchet structure when rotating. The ratchet structure and the pawl structure form a one-way transmission match, so that the rotor part of the permanent magnet motor forms a one-way rotation when the inner ring bracket reciprocates. The inner ring bracket is positioned and swung relative to the shell, and an elastically retractable control belt is provided between the outer ring of the inner ring bracket and the inside of the shell to limit the relative rotation stroke between the two. Specifically, one end of the control belt is fixed to the outer ring of the inner ring bracket, and the other end is fixed to the convex column inside the shell after being wound three-quarters of a circle along the outer ring of the inner ring bracket, that is, the telescopic deformation stroke of the control belt is adapted to the swing stroke of the shell, thereby achieving the purpose of limiting the swing stroke of the shell.

[0023] The transmission pipeline 105 is provided with electrical parts, such as Figure 4 As shown, the electrical part includes a rectifier and filter circuit 6, a voltage stabilizing circuit 7 and an inverter circuit 8. The power generation output lead of the permanent magnet motor is connected to the rectifier and filter circuit, the rectifier and filter circuit is connected to the voltage stabilizing circuit, the voltage stabilizing circuit is connected to the battery 9 and the inverter circuit, the inverter circuit is coupled to the transformer, and the transformer output is used as the power supply for the load. Figure 3The rectifier filter circuit in the invention is a three-phase bridge rectifier filter circuit, the voltage regulator circuit is a 12V voltage regulator circuit, and the transformer transforms the output voltage of the inverter circuit to 220V. The specific working principle is: since the rectifier filter circuit receives the three-phase induced current, the diode in the rectifier circuit is periodically turned on and off, so that the voltage becomes a single-phase pulsating voltage, and the current and waveform only have a positive half cycle. The current transmitted from the duck-type power generation device is introduced into the rectifier filter circuit for filtering, and the alternating current with different phases is combed into direct current and then connected to the voltage regulator circuit. The voltage regulator circuit uniformly converts the electric energy of different sizes at different times into the required set value for storage and conversion. Since the electric energy collected by wave energy at different times is different in size and cannot be collected and stored, it is necessary to stabilize the chaotic and different voltages into the required set value voltage for storage and conversion through the above-mentioned voltage regulator circuit. The inverter circuit is opposite to the rectifier circuit. When the electric energy passes through the inverter circuit, the direct current is converted into alternating current, and then the voltage is increased to 220V through the transformer to provide to the load, and the excess electric energy is stored in the battery. The inverter circuit is driven by a multivibrator composed of BG2 and BG3, and then driven by BG1 and BG4 to control the operation of BG6 and BG7. The oscillation circuit is powered by the voltage-stabilized power supply of BG5 and DW group, which makes the output frequency more stable. The inverter circuit is coupled with a transformer to achieve power output.

[0024] The platform device of the wave energy power generation system includes a horizontal telescopic part and a vertical lifting part. The main body of the horizontal telescopic part is a compass-shaped bracket body 2 arranged horizontally, and two symmetrical horizontal brackets 202 are hinged at one end to the support 201 to form a horizontal swing. A spring support frame 203 located between the two horizontal brackets is integrated in the middle of the support along the horizontal direction. Both sides of the spring support frame in the horizontal direction are connected to the corresponding horizontal brackets with a reset spring 3 with elastic force in the horizontal direction. The vertical lifting part includes a vertical pole 4 and a floating pile 5. The upper end of the vertical pole is fixedly connected to the support, and the lower end forms a telescopic fit with a sleeve hole column 501 provided on the floating pile, that is, a sleeve hole 503 is provided in the sleeve hole column, and the sleeve hole column is provided with a slot 502 radially connected to the sleeve hole distributed along the circumferential array, and the length of the slot is consistent with the telescopic stroke of the vertical pole in the sleeve hole column. The duck-type power generation device 1 is fixed to the horizontal bracket in the horizontal direction through the two ends of the power transmission pipeline 105, that is, it constitutes the system unit of the wave energy power generation system.

[0025] In order to improve the power generation effect, the horizontal support 202 can also fix a row of duck-type power generation devices 1 along the horizontal direction, and each duck-type power generation device is fixed to the horizontal support through a common power transmission pipeline 105.

[0026] In order to facilitate the application of the duck-type power generation device, the support 201 of the above-mentioned bracket body 2 is provided with any one or more combinations of an energy storage device, an energy conversion device, and an energy transmission device for collecting or using the electrical energy of the duck-type power generation device 1.

[0027] The wave energy power generation system can also be designed as a multi-machine parallel structure, that is, more than one of the above system units are connected in parallel to form a power generation platform. Figure 5 The following is a system circuit diagram of multiple machines in parallel, which can be used as an implementation reference.

[0028] The working method of the wave energy power generation system is as follows: when the horizontal telescopic part of the platform device is in high sea conditions, the symmetrical horizontal bracket 202 compresses the reset spring 3 to form an angle contraction, so as to achieve the purpose of resisting the impact of seawater and play an effective protective role. In low sea conditions, the symmetrical horizontal bracket is opened with the reset spring, and the angle is increased, thereby improving the conversion efficiency of wave energy; when the vertical lifting part changes with the height of the sea level, the vertical pole 4 is telescoped relative to the floating pile 5, so as to keep the duck-type power generation device 1 located on the working water surface, and ensure the reliability and stability of the work. When the shell 1 of the duck-type power generation device swings with the wave movement, the shell swings with the inner ring bracket 102 linked by the control belt 104, and the inner ring bracket is linked to the rotor part of the permanent magnet motor 103 to rotate, and forms a magnetic flux line cutting with the stator coil part, generating an induced electromotive force, realizing power generation, and finally leading out to the outside of the shell through the power generation output lead in the transmission pipeline 105, and used as the power supply for the above-mentioned electrical part or external load.

[0029] When the shell 1 is swung by the inner ring bracket 102 linked by the control belt 104, the control belt forms elastic deformation under the action of the swing resistance of the inner ring bracket and the gravity inertia force. For example, when the impact of the waves on the shell is too large, the shell instantly swings at a large angle, and the inner ring bracket does not immediately follow the swing due to the swing resistance and the gravity inertia force. Therefore, the control belt is stretched at this time, forming a reverse pulling force on the shell, that is, providing a swing reset force (limiting pulling force) for the shell, thereby preventing the shell from swinging too far, ensuring the reliability and stability of the shell when swinging, and not easy to overturn and fail.

[0030] The above contents are intended to illustrate the technical means of the present invention, but not to limit the technical scope of the present invention. Those skilled in the art may make obvious improvements or substitutions to the present invention in combination with existing common knowledge, which also fall within the protection scope of the claims of the present invention.

Claims

1. A nodding duck wave energy power generation system, the system unit of which includes a mechanical part, characterized in that The main body of the mechanical part is a duck-type power generation device (1), which comprises a water drop-shaped housing (101), a permanent magnet motor (103), an inner ring bracket (102), and a power transmission pipeline (105). The permanent magnet motor and the inner ring bracket are both located in the housing. The power transmission pipeline runs through the housing, and the housing is positioned and swung relative to the power transmission pipeline. The power transmission pipeline serves as a fixed bracket for the stator coil in the permanent magnet motor. The power generation output lead of the stator coil is led out of the housing through the power transmission pipeline to the outside of the housing. The inner rotor part of the permanent magnet motor and the inner ring bracket are in a one-way transmission cooperation, that is, the rotor part of the permanent magnet motor forms a one-way rotation when it swings back and forth with the inner ring bracket. The inner ring bracket is relative to the The housing is in a positional swinging state, and an elastic control belt is provided between the outer ring of the inner ring bracket and the housing to rotate in linkage with each other and limit the relative rotational travel between the two, i.e., one end of the control belt is fixed to the outer ring of the inner ring bracket, and the other end is fixed to the inside of the housing; the outer ring of the rotor part of the permanent magnet motor (103) is provided with a ratchet structure, and the inner ring bracket (102) is provided with a pawl structure that cooperates with the ratchet structure when rotating, i.e., the one-way transmission cooperation is formed by the combination of the ratchet structure and the pawl structure; the transmission pipeline (105) is provided with an electrical part, the electrical part includes a rectifier filter circuit (6), a voltage stabilizing circuit (7) and an inverter circuit (8), and the power generation output lead of the permanent magnet motor is connected to the output lead of the permanent magnet motor (103). The rectifier and filter circuit is connected to a rectifier and filter circuit, which is connected to a voltage stabilizing circuit, which is connected to a storage battery (9) and the inverter circuit, which is coupled to a transformer, and the transformer output is used as the power supply for the load; the rectifier and filter circuit (6) is a three-phase bridge rectifier and filter circuit, the voltage stabilizing circuit (7) is a 12V voltage stabilizing circuit, and the transformer transforms the output voltage of the inverter circuit (8) to 220V; the mechanical part includes a platform device, which includes a horizontal telescopic part and a vertical lifting part, and the main body of the horizontal telescopic part is a compass-shaped bracket body (2) arranged horizontally, that is, two symmetrical horizontal brackets (202) are each hinged at one end to the support (201) to form a horizontal direction. Swing, a spring support frame (203) located between two horizontal supports is integrated in the middle of the support in the horizontal direction, and a return spring (3) with elastic force located in the horizontal direction is connected between the two sides of the spring support frame and the corresponding horizontal supports; the vertical lifting part comprises a vertical pole (4) and a floating pile (5), the upper end of the vertical pole is fixedly connected to the support, and the lower end forms a telescopic fit with a sleeve hole column (501) provided on the floating pile, and the sleeve hole column is provided with slots (502) radially conductive with the sleeve hole in the sleeve hole column distributed in a circumferential array, and the length of the slot is consistent with the telescopic stroke of the vertical pole in the sleeve hole column; the duck-type power generation device (1) is fixed to the horizontal support through the power transmission pipeline (105).

2. The nodding duck wave energy power generation system according to claim 1 is characterized in that The horizontal support (202) is provided with at least one duck-type power generation device (1) fixedly arranged in a horizontal direction, and each duck-type power generation device is fixed to the horizontal support via a common power transmission pipeline (105).

3. The nodding duck wave energy power generation system according to claim 1 is characterized in that The support (201) of the support body (2) is provided with any one or more combinations of an electric energy storage device, an electric energy conversion device, and an electric energy transmission device for collecting or using the electric energy of the duck-type power generation device (1).

4. The nodding duck wave energy power generation system according to claim 1 is characterized in that The nodding duck wave energy power generation system is a multi-machine parallel structure, that is, more than one system unit is connected in parallel to form a power generation platform.

5. A working method of the nodding duck wave energy power generation system as claimed in claim 1, characterized in that The working method of the wave energy power generation system is as follows: when the sea conditions are high, the symmetrical horizontal bracket (202) compresses the reset spring (3) to form an angle contraction; when the sea conditions are low, the symmetrical horizontal bracket is opened with the reset spring to form an angle increase; when the vertical lifting part changes with the sea level, the vertical pole (4) is extended and retracted relative to the floating pile (5) to keep the duck-type power generation device located on the working water surface; when the shell of the duck-type power generation device swings with the wave movement, the shell is linked to the inner ring bracket (102) through the control belt (104), and the inner ring bracket is linked to the rotor part of the permanent magnet motor (103) to rotate, and forms a magnetic flux cut with the stator coil part to generate an induced electromotive force to achieve power generation, and finally leads to the outside of the shell (101) through the power generation output lead in the power transmission pipeline (105) to be used as power supply for external loads.

6. The working method of the nodding duck wave energy power generation system according to claim 5, characterized in that When the shell (101) is linked to the inner ring bracket (102) by the control belt (104) to swing, the control belt is elastically deformed under the action of the swing resistance of the inner ring bracket and the gravity inertia force. When the control belt is extended, a pulling force is generated on the shell, thereby providing a swing restoring force for the shell, thereby achieving the purpose of limiting the swing of the shell.

Images