Wind and ocean current energy combined power generation system

Abstract

The application relates to a wind and sea current combined power generation system which comprises an offshore platform, a wind energy capturing system, a sea current energy capturing system, a power generation device and a potential energy adjusting system, the offshore platform serves as a construction foundation, the wind energy capturing system is arranged above the offshore platform, the sea current energy capturing system is arranged at the bottom of the offshore platform, the power generation device is arranged on the offshore platform, the power generation device comprises upper and lower rotors and a stator, the upper rotor rotates clockwise under the action of the wind energy capturing system, the lower rotor rotates counterclockwise under the action of the sea current energy capturing system, and the potential energy adjusting system is arranged on the sea current energy capturing system. In actual use, the wind energy and the sea current energy are combined by using the upper rotor and the lower rotor, when the sea current is turbulent, the potential energy adjusting system stores the kinetic energy of the sea current, when the sea current is smooth and cannot reach the power generation standard, the stored energy of the potential energy adjusting system is released to assist power generation, the power generation efficiency is stabilized, and the problem of unstable power generation quality is solved.

Description

Technical Field

[0001] This application relates to the field of marine energy power generation facilities, and in particular to a combined wind and ocean current power generation system. Background Technology

[0002] Currently, most countries have set up marine observation stations in their ocean areas. These stations play a vital role in safeguarding maritime rights and interests, developing marine resources, providing early warnings of marine disasters, protecting the marine environment, strengthening national defense, and seeking new development opportunities. However, due to the special location of these observation stations, the power supply is the primary technical issue.

[0003] The existing solution is to use offshore power generation equipment. Currently, floating offshore wind power has become a hot topic in the field of offshore energy research due to its advantages such as better adaptability to water depth, no water depth limitations, and lower cost in deep water areas. ， However, due to the harsh marine environment, the overall weight and volume are limited by the environment. Furthermore, due to the complex and variable wind speed, wind direction, and current speed and direction at sea, the captured power of wind power generation systems and ocean current power generation systems fluctuates greatly. In addition to having a significant impact on the lifespan of mechanical structures, this power fluctuation also has a significant impact on power quality. Currently, the commonly used method is to improve power quality through expensive power electronic equipment. Effectively combining offshore wind energy and ocean current energy still has room for improvement. Summary of the Invention

[0004] To address the issue of unstable power generation quality, this application provides a combined wind and ocean current power generation system.

[0005] The wind and ocean current combined power generation system provided in this application adopts the following technical solution:

[0006] A wind and ocean current combined power generation system, characterized in that it includes:

[0007] Offshore platform, which is set on sea level and serves as the foundation for construction;

[0008] A wind energy capture system for converting wind energy into mechanical energy, the wind energy capture system being installed above an offshore platform;

[0009] The ocean current energy capture system is used to convert ocean current energy into mechanical energy, and the ocean current energy capture system is installed at the bottom of the offshore platform;

[0010] A power generation device for converting mechanical energy into electrical energy is installed on an offshore platform. The power generation device includes an upper rotor, a lower rotor, and a stator. The upper rotor rotates clockwise under the action of a wind energy capture system, and the lower rotor rotates counterclockwise under the action of an ocean current energy capture system.

[0011] A potential energy regulation system is used to store or release excess energy to assist in power generation, and the potential energy regulation system is installed on the ocean current energy capture system.

[0012] By adopting the above technical solution, in practical use, the upper and lower rotors enable the wind energy capture system and the ocean current energy capture system to effectively combine offshore wind energy and ocean current energy. Furthermore, by utilizing the potential energy regulation system installed on the ocean current energy capture system, when the ocean current is too turbulent, the potential energy regulation system stores the kinetic energy of the ocean current. When the ocean current is relatively gentle and does not meet the power generation standard, the energy stored in the potential energy regulation system is released to assist in power generation, thereby stabilizing the power generation efficiency and helping to solve the problem of unstable power generation quality.

[0013] Preferably, the wind energy capture system includes a wind turbine, a wind turbine main shaft, and a wind energy vertical drive shaft. The wind turbine is coaxially and fixedly connected to the wind turbine main shaft. The wind turbine main shaft and the wind energy vertical drive shaft are drivenly connected. The wind energy vertical drive shaft is drivenly connected to the upper rotor, and a wind energy slip ring for transmitting current is sleeved on the wind energy vertical drive shaft.

[0014] By adopting the above technical solution, in actual use, when the wind turbine rotates, it drives the upper rotor to rotate through the wind turbine main shaft and the wind turbine vertical transmission shaft, thus completing the function of wind power generation.

[0015] Preferably, the ocean current energy capture system includes an ocean current energy impeller, an ocean current energy main shaft, and an ocean current energy vertical drive shaft. The ocean current energy impeller is coaxially and fixedly connected to the ocean current energy main shaft. The ocean current energy main shaft and the ocean current energy vertical drive shaft are drivenly connected. The ocean current energy vertical drive shaft is drivenly connected to the lower rotor, and an ocean current energy slip ring for transmitting current is sleeved on the ocean current energy vertical drive shaft.

[0016] By adopting the above technical solution, when the ocean current energy impeller rotates, it drives the lower rotor to rotate through the ocean current energy main shaft and the ocean current energy vertical transmission shaft, thus completing the function of ocean current energy power generation.

[0017] Preferably, the potential energy regulation system includes a pumping system, a water storage tank, a vertical turbine, and a speed control system for regulating the vertical transmission shaft of the ocean current energy. The water storage tank is installed on an offshore platform, the pumping system is installed in seawater and connected to the water storage tank through a water pipe, the vertical turbine is coaxially mounted on the vertical transmission shaft of the ocean current energy, and the vertical turbine is connected to the water storage tank through a water pipe.

[0018] By adopting the above technical solution, in actual use, when the ocean current is too turbulent, the pumping system pumps water into the storage tank, converting the kinetic energy of the ocean current into potential energy. When the ocean current is relatively gentle and does not meet the power generation standard, the seawater in the storage tank is released. Under the action of gravity, the seawater enters the vertical turbine through the water pipe, thereby converting the potential energy into kinetic energy. The ocean current energy drives the lower rotor to rotate through the vertical drive shaft, realizing auxiliary power generation and helping to stabilize the power generation.

[0019] Preferably, the pumping system is configured as a pump, which is coaxially and fixedly connected to the main shaft of the ocean current energy system.

[0020] By adopting the above technical solution, in actual use, the pumping system, which is coaxially and fixedly connected to the main shaft of the ocean current energy, can supply seawater to the storage tank without power supply, which helps to improve the energy utilization rate of the device.

[0021] Preferably, the speed control system includes a flow control valve, a speed sensor, a controller, and a flow valve drive board. The speed sensor is installed on the ocean current energy vertical transmission shaft of the ocean current energy capture system, and the rest are integrated and fixed on the offshore platform.

[0022] By adopting the above technical solution, in actual use, the speed sensor installed on the vertical transmission shaft of the ocean current allows the speed sensor to know the turbulence of the ocean current. When the speed is high, the controller, flow control valve and flow valve drive board control the pumping system to pump water to the storage tank. When the speed is low, the storage tank is controlled to release water, thus realizing the pumping and releasing functions of this device.

[0023] Preferably, a wind power shell is provided above the offshore platform, and the wind power impeller, wind power main shaft and wind power vertical transmission shaft are all located inside the wind power shell.

[0024] By adopting the above technical solution, in actual use, the wind turbine housing installed on the wind turbine rotor, wind turbine main shaft and wind turbine vertical transmission shaft helps to prevent the transmission components from being exposed to the outside and thus aging, and helps to improve the service life of the device.

[0025] Preferably, the bottom of the offshore platform is provided with a current energy shell, and the current energy impeller, current energy main shaft, current energy vertical transmission shaft and vertical transmission shaft are evenly arranged inside the current energy shell.

[0026] By adopting the above technical solution, the use of the ocean current energy housing installed on the ocean current energy impeller, ocean current energy main shaft and ocean current energy vertical transmission shaft helps to prevent the transmission components from being exposed underwater and causing corrosion, and helps to improve the service life of the device.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. In practical use, the upper and lower rotors enable the wind energy capture system and the ocean current energy capture system to effectively combine offshore wind energy and ocean current energy. Furthermore, the potential energy regulation system installed on the ocean current energy capture system stores the kinetic energy of the ocean current when it is too turbulent, and releases the energy stored in the potential energy regulation system to assist in power generation when the ocean current is relatively calm and does not meet the power generation standards. This achieves stable power generation efficiency and helps to solve the problem of unstable power generation quality.

[0029] 2. The ocean current energy impeller drives both the generator and the pumping system. By changing the electromagnetic torque of the generator and the drainage volume of the pumping system, the speed of the ocean current energy impeller can be adjusted to operate near the optimal tip speed ratio, thereby achieving maximum energy capture control.

[0030] 3. The rotating upper and lower rotors can achieve a similar effect to a gyroscope, which helps stabilize the entire device. Through energy storage and release, the rotational speeds of the upper and lower rotors can be controlled to be more consistent, thus improving stability. Furthermore, the current generated by the upper and lower rotors is basically the same, which is beneficial for subsequent rectification steps. Attached Figure Description

[0031] Figure 1 This is a schematic diagram illustrating the overall structure of a wind and ocean current combined power generation system, which is the main embodiment of this application.

[0032] Figure 2 This is a cross-sectional schematic diagram illustrating the main structure of the power generation device in the embodiments of this application;

[0033] Figure 3 This is a cross-sectional schematic diagram illustrating the main structure of the power generation device in the embodiments of this application;

[0034] Figure 4 This is a schematic diagram of the magnetic field lines of the stator structure, which is the main feature of this application.

[0035] Reference numerals: 1. Offshore platform; 2. Wind energy capture system; 21. Wind turbine casing; 22. Wind turbine impeller; 23. Wind turbine main shaft; 24. Wind energy vertical drive shaft; 241. Wind energy electric slip ring; 3. Ocean current energy capture system; 31. Ocean current energy casing; 32. Ocean current energy impeller; 33. Ocean current energy main shaft; 34. Ocean current energy vertical drive shaft; 341. Ocean current energy electric slip ring; 4. Power generation device; 41. Upper rotor; 42. Lower rotor; 43. Stator; 431. Permanent magnet; 432. Silicon steel sheet; 44. Support ring; 441. Rotation clearance; 45. Upper rotating component; 451. Ball bearing; 46. Upper fixed ring; 47. Lower rotating component; 48. Lower fixed ring; 5. Potential energy regulation system; 51. Pumping system; 52. Water storage tank; 53. Vertical turbine. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0037] This application discloses a wind and ocean current combined power generation system.

[0038] Reference Figure 1 , Figure 2 and Figure 3 Wind and ocean current combined power generation systems include

[0039] Offshore platform 1, which is located on the sea level and serves as the foundation for construction;

[0040] Wind energy capture system 2 is used to convert wind energy into mechanical energy. Wind energy capture system 2 is installed above offshore platform 1.

[0041] Ocean current energy capture system 3 is used to convert ocean current energy into mechanical energy. Ocean current energy capture system 3 is installed at the bottom of the offshore platform 1.

[0042] A power generation device 4 is used to convert mechanical energy into electrical energy. The power generation device 4 is installed on the offshore platform 1. The power generation device 4 includes an upper rotor 41, a lower rotor 42, and a stator 43. The stator 43 is a hollow column and is composed of several rectangular permanent magnets 431. Silicon steel sheets 432 are placed between adjacent permanent magnets 431, and adjacent permanent magnets 431 are fixedly connected by silicon steel sheets 432. The upper rotor 41 rotates clockwise under the action of the wind energy capture system 2, and the lower rotor 42 rotates counterclockwise under the action of the ocean current energy capture system 3. A support ring 44 is coaxially fixed on the periphery of the stator 43. An upper rotating component 45 is placed between the support ring 44 and the upper rotor 41. The upper rotor 41 and the upper rotor... The moving part 45 is fixedly connected, and a rotation gap 441 is provided between the upper rotating part 45 and the supporting ring 44. An upper fixed ring 46 is coaxially fixedly provided on the periphery of the upper rotating part 45. The upper fixed ring 46 is fixedly connected to the supporting ring 44, and a number of balls 451 are arranged in a ring between the upper rotating part 45 and the upper fixed ring 46. A lower rotating part 47 is provided between the supporting ring 44 and the lower rotor 42. The lower rotor 42 is fixedly connected to the lower rotating part 47, and a rotation gap 441 is provided between the lower rotating part 47 and the supporting ring 44. A lower fixed ring 48 is coaxially fixedly provided on the periphery of the lower rotating part 47. The lower fixed ring 48 is fixedly connected to the supporting ring 44, and a number of balls 451 are arranged in a ring between the lower rotating part 47 and the lower fixed ring 48.

[0043] Potential energy regulation system 5 is used to store or release excess energy to assist in power generation. Potential energy regulation system 5 is installed on ocean current energy capture system 3.

[0044] In practical use, the upper rotor 41 and the lower rotor 42 enable the wind energy capture system 2 and the ocean current energy capture system 3 to effectively combine offshore wind energy and ocean current energy. Furthermore, the potential energy regulation system 5 installed on the ocean current energy capture system 3 stores the kinetic energy of the ocean current when it is too turbulent, and releases the energy stored in the potential energy regulation system 5 to assist in power generation when the ocean current is relatively calm and does not meet the power generation standards. This achieves stable power generation efficiency and helps to solve the problem of unstable power generation quality.

[0045] Reference Figure 1 , Figure 2 and Figure 3 The wind energy capture system 2 includes a wind energy housing 21, a wind energy impeller 22, a wind energy main shaft 23, and a wind energy vertical drive shaft 24. The wind energy impeller 22 is coaxially and fixedly connected to the wind energy main shaft 23. The wind energy main shaft 23 and the wind energy vertical drive shaft 24 are connected in a driving connection. The wind energy vertical drive shaft 24 is connected in a driving connection to the upper rotor 41. A wind energy electric slip ring 241 for transmitting current is sleeved on the wind energy vertical drive shaft 24. The wind energy housing 21 is fixedly installed on the offshore platform 1, and the wind energy impeller 22, the wind energy main shaft 23, and the wind energy vertical drive shaft 24 are all installed inside the wind energy housing 21.

[0046] In practical use, when the wind turbine 22 rotates, it drives the upper rotor 41 to rotate through the wind turbine main shaft 23 and the wind turbine vertical transmission shaft 24, thus completing the function of wind power generation. The wind turbine housing 21 installed on the wind turbine 22, the wind turbine main shaft 23 and the wind turbine vertical transmission shaft 24 helps to prevent the transmission components from being exposed to the outside and aging, and helps to improve the service life of the device.

[0047] Reference Figure 1 , Figure 2 and Figure 3 The ocean current energy capture system 3 includes an ocean current energy housing 31, an ocean current energy impeller 32, an ocean current energy main shaft 33, and an ocean current energy vertical transmission shaft 34. The ocean current energy impeller 32 is coaxially and fixedly connected to the ocean current energy main shaft 33. The ocean current energy main shaft 33 and the ocean current energy vertical transmission shaft 34 are connected in a driving connection. The ocean current energy vertical transmission shaft 34 is connected in a driving connection to the lower rotor 42. An ocean current energy slip ring 341 for transmitting current is sleeved on the ocean current energy vertical transmission shaft 34. The ocean current energy housing 31 is fixedly installed at the bottom of the offshore platform 1, and the ocean current energy impeller 32, the ocean current energy main shaft 33, and the ocean current energy vertical transmission shaft 34 are all installed inside the ocean current energy housing 31.

[0048] In practical use, when the ocean current impeller 32 rotates, it drives the lower rotor 42 to rotate through the ocean current main shaft 33 and the ocean current vertical transmission shaft 34, thus completing the function of ocean current power generation. Furthermore, the ocean current housing 31 installed on the ocean current impeller 32, ocean current main shaft 33 and ocean current vertical transmission shaft 34 helps to prevent the transmission components from being exposed underwater and causing corrosion, thus helping to improve the service life of the device.

[0049] Reference Figure 1 , Figure 2 and Figure 3 The potential energy regulation system 5 includes a pumping system 51, a water storage tank 52, a vertical turbine 53, and a speed control system for regulating the vertical transmission shaft 34 of the ocean current energy. The water storage tank 52 is installed on the offshore platform 1. The pumping system 51 is a pumping pump installed in the seawater and connected to the water storage tank 52 through a water pipe. The rotating shaft of the pumping pump is coaxially and fixedly connected to the ocean current energy main shaft 33. The vertical turbine 53 is coaxially installed on the ocean current energy vertical transmission shaft 34 and is connected to the water storage tank 52 through a water pipe. The speed control system includes a flow control valve, a speed sensor, a controller, and a flow valve drive plate. The speed sensor is installed on the ocean current vertical transmission shaft of the ocean current energy capture system 3, and the rest are integrated and fixedly installed on the offshore platform 1.

[0050] In practical use, when the ocean current is too turbulent, the speed sensor sends a signal, which, through the controller, flow control valve, and flow valve drive board, controls the water pump to pump water into the storage tank 52, converting the kinetic energy of the ocean current into potential energy. When the ocean current is relatively gentle and does not meet the power generation standard, the seawater in the storage tank 52 is released. Under the action of gravity, the seawater enters the vertical turbine 53 through the water pipe, thereby converting the potential energy into kinetic energy. The lower rotor 42 is driven to rotate by the ocean current energy vertical transmission shaft 34 to achieve auxiliary power generation, which helps stabilize the power generation. Furthermore, by using the water pumping system 51, which is coaxially fixedly connected to the ocean current energy main shaft 33, the water pumping system 51 can supply seawater to the storage tank 52 without power supply, which helps improve the energy utilization rate of this device.

[0051] The implementation principle of the wind and ocean current combined power generation system in this application embodiment is as follows: In actual use, the upper rotor 41 and the lower rotor 42 are used to effectively combine the wind energy capture system 2 and the ocean current capture system 3 with offshore wind energy and ocean current energy. When the ocean current is too turbulent, the speed sensor sends a signal, which, through the controller, flow control valve, and flow valve drive plate, controls the water pump to pump water into the water storage tank 52, converting the kinetic energy of the ocean current into potential energy. When the ocean current is relatively gentle and does not meet the power generation standard, the seawater in the water storage tank 52 is released, and the water is released under gravity. Under the influence of the current, seawater enters the vertical turbine 53 through the water pipe, converting potential energy into kinetic energy. The current energy vertical drive shaft 34 drives the lower rotor 42 to rotate, achieving auxiliary power generation and contributing to stable power output. Furthermore, the pumping system 51, coaxially and fixedly connected to the current energy main shaft 33, allows seawater to be supplied to the storage tank 52 without requiring a power source, improving the energy utilization rate of the device. The upper rotor 41, lower rotor 42, and a vertically oriented, circumferentially arranged stator 43, with the magnetic field direction of the stator 43 as shown... Figure 4 As shown, the upper rotor 41 and the lower rotor 42 cut magnetic field lines without interfering with each other, making full use of the limited space and helping to improve the applicability of the device.

Claims

1. A combined wind and ocean current power generation system, characterized in that... ,include Offshore platform (1), which is set on the sea surface and serves as the foundation for construction; A wind energy capture system (2) is used to convert wind energy into mechanical energy, and the wind energy capture system (2) is installed above the offshore platform (1); Ocean current energy capture system (3) is used to convert ocean current energy into mechanical energy. The ocean current energy capture system (3) is installed at the bottom of the offshore platform (1). A power generation device (4) is used to convert mechanical energy into electrical energy. The power generation device (4) is installed on an offshore platform (1). The power generation device (4) includes an upper rotor (41), a lower rotor (42) and a stator (43). The upper rotor (41) rotates clockwise under the action of the wind energy capture system (2), and the lower rotor (42) rotates counterclockwise under the action of the ocean current energy capture system (3). A potential energy regulation system (5) is used to store or release excess energy to assist in power generation. The potential energy regulation system (5) is installed on the ocean current energy capture system (3). A support ring (44) is coaxially fixed on the periphery of the stator (43). An upper rotating member (45) is provided between the support ring (44) and the upper rotor (41). The upper rotor (41) is fixedly connected to the upper rotating member (45), and a rotation gap (441) is provided between the upper rotating member (45) and the support ring (44). An upper fixing ring (46) is coaxially fixed on the periphery of the upper rotating member (45). The upper fixing ring (46) is fixedly connected to the support ring (44), and the upper rotating member (45) and the upper fixing ring (46) are arranged in a ring array. There are several balls (451), a lower rotating part (47) is provided between the supporting ring (44) and the lower rotor (42), the lower rotor (42) and the lower rotating part (47) are fixedly connected, and a rotation gap (441) is provided between the lower rotating part (47) and the supporting ring (44). A lower fixing ring (48) is coaxially fixedly provided on the periphery of the lower rotating part (47), the lower fixing ring (48) is fixedly connected to the supporting ring (44), and there are several balls (451) arranged in a ring between the lower rotating part (47) and the lower fixing ring (48).

2. The wind and ocean current combined power generation system according to claim 1, characterized in that... The wind energy capture system (2) includes a wind turbine (22), a wind turbine main shaft (23), and a wind vertical drive shaft (24). The wind turbine (22) is coaxially and fixedly connected to the wind turbine main shaft (23). The wind turbine main shaft (23) and the wind vertical drive shaft (24) are connected in a driving manner. The wind vertical drive shaft (24) is connected in a driving manner to the upper rotor (41). A wind energy slip ring (241) for transmitting current is sleeved on the wind vertical drive shaft (24).

3. A wind and ocean current combined power generation system according to claim 1, characterized in that... The ocean current energy capture system (3) includes an ocean current energy impeller (32), an ocean current energy main shaft (33), and an ocean current energy vertical transmission shaft (34). The ocean current energy impeller (32) is coaxially and fixedly connected to the ocean current energy main shaft (33). The ocean current energy main shaft (33) and the ocean current energy vertical transmission shaft (34) are connected in a transmission manner. The ocean current energy vertical transmission shaft (34) is connected in a transmission manner to the lower rotor (42). An ocean current energy slip ring (341) for transmitting current is sleeved on the ocean current energy vertical transmission shaft (34).

4. A wind and ocean current combined power generation system according to claim 3, characterized in that... The potential energy regulation system (5) includes a pumping system (51), a water storage tank (52), a vertical turbine (53), and a speed control system for regulating the vertical transmission shaft (34) of the ocean current energy. The water storage tank (52) is installed on the offshore platform (1). The pumping system (51) is installed in the seawater and connected to the water storage tank (52) through a water pipe. The vertical turbine (53) is coaxially installed on the vertical transmission shaft (34) of the ocean current energy. The vertical turbine (53) is connected to the water storage tank (52) through a water pipe.

5. A wind and ocean current combined power generation system according to claim 4, characterized in that... The pumping system (51) is configured as a pump, which is coaxially and fixedly connected to the ocean current energy main shaft (33).

6. A wind and ocean current combined power generation system according to claim 4, characterized in that... The speed control system includes a flow control valve, a speed sensor, a controller and a flow valve drive board. The speed sensor is installed on the ocean current energy vertical transmission shaft (34) of the ocean current energy capture system (3), and the rest are integrated and fixed on the offshore platform (1).

7. A wind and ocean current combined power generation system according to claim 2, characterized in that... The offshore platform (1) is equipped with a wind energy shell (21), and the wind energy impeller (22), wind energy main shaft (23) and wind energy vertical transmission shaft (24) are all installed inside the wind energy shell (21).

8. A wind and ocean current combined power generation system according to claim 4, characterized in that... The bottom of the offshore platform (1) is provided with a current energy shell (31), and the current energy impeller (32), current energy main shaft (33), current energy vertical transmission shaft (34) and vertical turbine (53) are all located inside the current energy shell (31).

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