Tidal power generation device

Abstract

The invention discloses a tidal power generation device, which belongs to the field of ocean energy utilization and comprises a wave capturing device, a transmission device, a speed change device, a power generator and a control system. A wave catching blade in the wave catching device is connected with a fixing support through a pin structure, the blade can freely rotate around the pin structure, limiting blocks are arranged at the two ends of the blade to limit the maximum rotation angle, the wave catching device is fixed to a conveying plate in the conveying device through the fixing support, and supporting wheels are arranged at the four corners of the conveying plate and roll in a rail on a limiting panel. The whole device is fixed to the shoreside filled and leveled-up wall face. When water waves impact the wave catching blades to drive the conveying plate to move, the driving wheel is driven to rotate through the supporting wheel, then the transmission shaft is driven to rotate, mechanical energy is transmitted to the input shaft of the speed change device, and finally the output shaft is connected with the horizontal shaft generator buried underground to achieve power generation. And finally, the operation condition of the whole device is monitored through the control system.

Description

Technical Field

[0001] The invention belongs to the field of ocean energy utilization, and in particular relates to a tidal energy power generation device. Background Art

[0002] In order to achieve the goals of carbon peak and carbon neutrality, vigorously developing renewable energy such as ocean energy is an important way to deal with energy crises and climate change. Tidal energy is a type of ocean energy. Under the influence of the tidal forces of the sun and the moon, the seawater ebbs and flows, and has abundant potential energy and kinetic energy for power generation. my country's tortuous coastline contains rich tidal energy resources. Vigorously developing tidal energy is of great significance for carbon emission reduction and green and low-carbon energy transformation.

[0003] At present, there are not enough ways and devices to utilize tidal energy. Common ways to utilize tidal energy often require building dams to form reservoirs, which not only has certain requirements on the terrain but also has a large project scale, and cannot fully utilize tidal energy. The utilization efficiency of other devices is not high. The equipment for utilizing tidal energy set up in the prior art, and the blade-type devices set up to capture energy will be affected by the direction of the tide when driven by the tide. Tides in different directions can easily cause the direction of rotation of the blades to change, and the generator cannot continue to rotate in one direction, which in turn affects the power generation efficiency. Summary of the invention

[0004] The object of the present invention is to provide a tidal energy power generation device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a tidal energy power generation device, comprising a wave catching device, a transmission device, a speed changing device, a generator and a control system;

[0006] The wave catching device comprises a fixed support and a wave catching blade, wherein the fixed support is fixedly mounted on a transmission plate of a transmission device, and the wave catching blade is connected to the fixed support via a pin structure;

[0007] The transmission device comprises a fixed bracket, and the fixed bracket is fixed on the flattened wall surface of the shore;

[0008] The speed change device includes an input shaft and an output shaft, wherein the input shaft is connected to the transmission device, and the output shaft is connected to the input shaft of the generator.

[0009] Preferably, a buffer limit device is provided at the end of the wave-catching blade, and the buffer limit device comprises a limit block A, a limit block B and a buffer spring, and the side walls of the limit block A and the limit block B adjacent to the wave-catching blade are curved surfaces, and the shape of the curved surface fits the shape of the outer edge of the wave-catching blade, and the limit block A and the limit block B are respectively placed on both sides of the pin structure;

[0010] Preferably, two buffer springs are respectively installed on the curved surfaces of the limit block A and the limit block B to buffer the impact of the wave-catching blades on the limit block A and the limit block B.

[0011] Preferably, the wave-catching blade is arc-shaped, and the wave-catching blade can rotate freely around the pin structure.

[0012] Preferably, support wheels are provided at the four corners of the conveying plate, and the support wheels roll in tracks. The tracks are located inside the limiting panel and are fixedly connected thereto as a whole.

[0013] Preferably, driving wheels are provided at both ends of the transmission device, the driving wheels are meshed with the supporting wheels, the driving wheels are installed on the transmission shaft, and the transmission shaft is connected to the input shaft of the speed change device. When the wave-catching blades are impacted by water waves, the driving wheels can drive the transmission plate to move, and this process drives the driving wheels to rotate through the supporting wheels, thereby driving the transmission shaft to rotate.

[0014] Preferably, the generator is a horizontal shaft generator, buried underground near the shore.

[0015] Preferably, the control system includes transmission shaft speed, torque and vibration monitoring, generator speed, torque, power and vibration monitoring, and external ambient temperature, humidity, sea breeze level, and wave height monitoring, and will decide whether the device should generate electricity normally or be shut down for maintenance or protection based on external climatic conditions.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The arc-shaped wave-catching blades of the present invention can receive the impact of the two-way water flow of the tide and generate electricity, and keep rotating in the same direction, which greatly increases the power generation hours of the device;

[0018] 2. The present invention is simple and convenient to install, adopts modular preparation and hoisting, and can be put into use quickly and in large quantities;

[0019] 3. The invention has low requirements on terrain conditions, and the device can be fixed on the shore wall, while effectively protecting the embankment from seawater scouring;

[0020] 4. A single device of the present invention can drive two generators, and convert the low-speed seawater kinetic energy into high-speed rotational mechanical energy through a speed change device, thereby improving the power generation efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an overall top view of the tidal energy power generation device of the present invention;

[0022] Figure 2 This is a front view of the transmission device of the present invention without the limiting panel;

[0023] Figure 3 A top view of the transmission device of the present invention;

[0024] Figure 4 It is a rear view of the limiting panel of the present invention;

[0025] Figure 5 The front view and side view of the conveying plate and the supporting wheel of the present invention;

[0026] Figure 6 A side view of the transmission device of the present invention with the gear removed;

[0027] Figure 7 The layout and connection diagram of the generator and the speed change device of the present invention;

[0028] Figure 8 A diagram of a speed change device of the present invention;

[0029] Fig. 9 A detailed view of the wave catching device of the present invention;

[0030] Fig.10 A detailed view of the pin connection between the wave catching blade and the fixed support of the present invention;

[0031] Fig.11 A diagram showing the rotation of the upper and lower wave-catching blades of the transmission device of the present invention at high tide;

[0032] Fig.12 A diagram showing the rotation of the upper and lower wave-catching blades of the transmission device of the present invention at low tide;

[0033] Fig.13 This is a diagram showing the arrangement of the tidal energy power generation device of the present invention on the coast.

[0034] In the figure: 100-wave catching device, 101-fixed support, 102-pin structure, 103-limiting block A, 104-limiting block B, 105-buffer spring, 106-wave catching blade, 200-transmission device, 201-transmission shaft, 202-fixed support, 203-driving wheel, 204-track, 205-support wheel, 206-transmission plate, 207-limiting panel, 300-speed change device, 301-input shaft, 302-output shaft, 4-generator, 5-control system. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 13 , the present invention provides a technical solution: a tidal energy power generation device, including a wave catching device 100, a transmission device 200, a speed change device 300, a generator 4 and a control system 5;

[0037] The wave catching device 100 comprises a fixed support 101 and a wave catching blade 106. The fixed support 101 is fixedly mounted on a transmission plate 206 of a transmission device 200. The wave catching blade 106 is connected to the fixed support 101 via a pin structure 102.

[0038] The transmission device 200 includes a fixed bracket 202, and the fixed bracket 202 is fixed on the flattened wall surface of the shore;

[0039] The speed change device 300 includes an input shaft 301 and an output shaft 302, the input shaft 301 is connected to the transmission device 200, and the output shaft 302 is connected to the input shaft of the generator 4. The input shaft and the output shaft are connected through a planetary gear set, the central gear of the planetary gear set is fixedly connected to the output shaft 302, and the outermost inner ring gear is fixedly connected to the input shaft 301. There are three connecting gears arranged at equal intervals between the two, and they are fixedly connected between the central gear and the outermost inner ring gear through fixed shafts and keep meshing.

[0040] In this embodiment, a buffer limit device is provided at the end of the wave catching blade 106, and the buffer limit device includes a limit block A103, a limit block B104 and a buffer spring 105. The side walls of the limit blocks A103 and B104 adjacent to the wave catching blade 106 are curved surfaces, and the shape of the curved surface fits the shape of the outer edge of the wave catching blade 106. The limit blocks A103 and B104 are respectively placed on both sides of the pin structure 102. The function of the limit block A103 is to limit the maximum angle of rotation of the wave catching blade 106 during forward rotation, and the inclination angle of the wave catching blade 106 can be adjusted according to the direction of the wave flow to achieve the maximum wave capture efficiency. The function of adjusting the limit block B104 is to limit the maximum angle of rotation of the wave catching blade 106 during reverse rotation.

[0041] The curved surfaces of the limit block A103 and the limit block B104 are respectively provided with two buffer springs 105 for buffering the impact of the wave catching blade 106 on the limit block A103 and the limit block B104.

[0042] In this embodiment, the wave-catching blades 106 are arc-shaped, and the wave-catching blades 106 can rotate freely around the pin structure 102. The arc-shaped wave-catching blades 106 can better capture the energy of the waves.

[0043] In this embodiment, support wheels 205 are provided at the four corners of the transmission plate 206, and the support wheels 205 roll in the track 204. The track 204 is located inside the limiting panel 207 and is fixedly connected thereto as a whole. Driving wheels 203 are provided at both ends of the transmission device 200, and the driving wheels 203 are meshed with the support wheels 205. The driving wheels 203 are installed on the transmission shaft 201, and the transmission shaft 201 is connected to the input shaft of the speed change device 300. When the wave-catching blades 106 are impacted by waves, the driving wheels 203 can drive the transmission plate 206 to move, and the process drives the driving wheels 203 to rotate through the support wheels 205, thereby driving the transmission shaft 201 to rotate. When the wave-catching blades 106 are driven by the waves, the support wheels 205 are driven to move through the transmission plate 206 connected to the wave-catching blades 106, and the driving wheels 203 will be driven to rotate during the movement, thereby driving the generator 3 to work.

[0044] In this embodiment, the generator 4 is a horizontal shaft generator, which is buried underground near the shore to prevent erosion by sea water and sea breeze.

[0045] In this embodiment, the control system 5 includes transmission shaft speed, torque and vibration monitoring, generator speed, torque, power and vibration monitoring, and external ambient temperature, humidity, sea breeze level, and wave height monitoring, and will determine whether the device is generating electricity normally or shut down for maintenance or protection based on external climatic conditions.

[0046] Working principle: When the tide is high, the transmission device relies on the wave-catching blades 106 located at the upper part of the transmission device 200 to rotate counterclockwise under the push of the waves; at this time, the maximum rotation angle of the upper wave-catching blades 106 is as perpendicular to the direction of the waves as possible, so as to obtain the maximum thrust of the waves, while the wave-catching blades 106 located at the lower part of the transmission device 200 hinder the rotation of the device. Under the thrust of the waves, the maximum rotation angle of the lower wave-catching blades 106 is the angle when the tangent direction away from one end of the fixed device is horizontal. On the one hand, since the blades at this time will hinder the rotation, the blades should be rotated as much as possible to reduce the rotation resistance. On the other hand, when the wave-catching device 100 rotates to the upper part, the waves need to be able to push the wave-catching blades away and rotate them to the position of capturing energy, so the rotation angle cannot be too large.

[0047] When the tide is low, the transmission device 200 rotates under the impetus of the waves by relying on the lower wave-catching blades 106, and still keeps rotating counterclockwise. At this moment, the upper wave-catching blades 106 hinder the rotation of the transmission device.

[0048] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A tidal energy power generation device, characterized in that: It comprises a wave catching device (100), a transmission device (200), a speed changing device (300), a generator (4) and a control system (5); The wave catching device (100) comprises a fixed support (101) and a wave catching blade (106); the fixed support (101) is fixedly mounted on a transmission plate (206) of a transmission device (200); and the wave catching blade (106) is connected to the fixed support (101) via a pin structure (102); The transmission device (200) comprises a fixed bracket (202), wherein the fixed bracket (202) is fixed on a flattened wall surface at the shore; The speed change device (300) comprises an input shaft (301) and an output shaft (302), wherein the input shaft (301) is connected to the transmission device (200), and the output shaft (302) is connected to the input shaft of the generator (4).

2. A tidal energy power generation device according to claim 1, characterized in that: The end of the wave-catching blade (106) is provided with a buffering and limiting device, the buffering and limiting device comprising a limiting block A (103), a limiting block B (104) and a buffering spring (105); the side walls of the limiting block A (103) and the limiting block B (104) adjacent to the wave-catching blade (106) are curved surfaces, the shape of the curved surface is in conformity with the shape of the outer edge of the wave-catching blade (106); the limiting block A (103) and the limiting block B (104) are respectively placed on both sides of the pin structure (102); The curved surfaces of the limit block A (103) and the limit block B (104) are respectively provided with two buffer springs (105) for buffering the impact of the wave catching blade (106) on the limit block A (103) and the limit block B (104).

3. A tidal energy power generation device according to claim 2, characterized in that: The wave-catching blade (106) is in an arc shape, and the wave-catching blade (106) can rotate freely around the pin structure (102).

4. A tidal energy power generation device according to claim 1, characterized in that: The four corners of the transmission plate (206) are provided with supporting wheels (205), and the supporting wheels (205) roll in the track (204). The track (204) is located inside the limiting panel (207) and is fixedly connected thereto as a whole.

5. A tidal energy power generation device according to claim 4, characterized in that: The transmission device (200) is provided with driving wheels (203) at both ends, the driving wheels (203) are meshed with the support wheels (205), the driving wheels (203) are mounted on a transmission shaft (201), and the transmission shaft (201) is connected to the input shaft of the speed change device (300). When the wave-catching blades (106) are impacted by water waves, the driving wheels (203) can drive the transmission plate (206) to move, and in this process, the driving wheels (203) are driven to rotate through the support wheels (205), thereby driving the transmission shaft (201) to rotate.

6. A tidal energy power generation device according to claim 1, characterized in that: The generator (4) is a horizontal shaft generator and is buried underground near the shore.

7. A tidal energy power generation device according to claim 1, characterized in that: The control system (5) includes monitoring of the transmission shaft speed, torque and vibration, monitoring of the generator speed, torque, power and vibration, and monitoring of the external environment temperature, humidity, sea breeze level and wave height, and will determine whether the device is generating electricity normally or shutting down for maintenance or protection according to the external climatic conditions.

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