Twin semi-direct-drive tidal current energy generator set capable of increasing flow velocity

Abstract

The utility model discloses a twin semi-direct-drive tidal current energy generator set capable of increasing the flow velocity, which comprises a hoop, a flow guide acceleration pipeline, a first fixed platform, a cabin and a double-input medium-speed generator, the ends, away from the hoop, of the rigid supporting columns are connected with a semi-submersible jacket foundation, the flow guide acceleration pipeline is installed in the hoop in a sleeved mode, openings in the two ends of the flow guide acceleration pipeline are arranged in a horn shape, and the first fixing platform is arranged at the lower end of the inner wall of the flow guide acceleration pipeline. The multiple supporting columns are installed on the first fixing platform, part of the double-input medium-speed generator is arranged in the cabin, the double-input medium-speed generator comprises two outwards-extending shaft parts extending out of the two ends of the cabin, and each outwards-extending shaft part is provided with an impeller. According to the technical scheme provided by the utility model, the generating capacity can be doubled under the condition of guiding and accelerating seawater.

Description

Technical Field

[0001] This utility model relates to the field of tidal energy technology, and in particular to a twin semi-direct drive tidal energy generator set that can increase flow velocity. Background Technology

[0002] Tidal energy refers to the kinetic energy generated by the ocean surface during the rise and fall of tides. Tidal energy is the energy generated by the periodic rise and fall of seawater on the Earth's surface caused by the gravitational pull of celestial bodies such as the moon and the sun. Compared with waves, tidal energy changes more smoothly and regularly. Tidal energy is the kinetic energy formed when the tidal force of the moon and the sun causes the seawater to move back and forth horizontally in a periodic manner. It is mainly concentrated in the waterways or bay mouths between the shore and islands. Tidal energy can be converted into electrical energy or used for other forms of energy utilization.

[0003] Currently, although tidal power generation devices can convert tidal energy into electrical energy, they only have one impeller and cannot increase the flow rate of water, so the power generation efficiency and output are not very high. Utility Model Content

[0004] The main purpose of this invention is to propose a twin semi-direct drive tidal current generator set that can increase the flow rate, thereby doubling the power generation while guiding and accelerating the water flow.

[0005] To achieve the above objectives, this utility model provides a twin semi-direct drive tidal current generator set with increased flow rate, the twin semi-direct drive tidal current generator set with increased flow rate comprising:

[0006] The clamp has multiple rigid supports arranged at intervals at its lower end along its axial direction, and the ends of the multiple rigid supports away from the clamp are connected to a semi-submersible jacket foundation.

[0007] A flow-increasing pipe is fitted inside the clamp, and the two ends of the flow-increasing pipe are flared.

[0008] The first fixed platform is located at the lower end of the inner wall of the flow-increasing pipe;

[0009] The cabin has a plurality of spaced-apart support columns connected to its lower end, and the plurality of support columns are mounted on the first fixed platform; and,

[0010] A dual-input medium-speed generator is partially housed within the nacelle. The dual-input medium-speed generator includes two extended shafts extending beyond both ends of the nacelle, each of which is equipped with an impeller.

[0011] Optionally, the twin semi-direct drive tidal current generator set with increased flow rate further includes an auxiliary power generation component disposed within the flow-increasing pipe, the auxiliary power generation component comprising:

[0012] Two columns are provided on the upper part of the outer wall of the nacelle and are arranged at intervals, with both columns located between the two impellers;

[0013] The mounting rod is rotatably mounted between the two columns, and the mounting rod extends axially along the flow-increasing pipe.

[0014] Helical blades, extending helically onto the mounting rod;

[0015] A first gear is disposed at the end of the mounting rod; and,

[0016] The second gear is disposed on one of the extended shaft portions and is drivenly connected to the first gear.

[0017] Optionally, the number of teeth of the first gear is 2-3 times the number of teeth of the second gear.

[0018] Optionally, the nacelle is provided with two speed-increasing sections located between the two impellers and the dual-input medium-speed generator, with one end of each speed-increasing section connected to the two extended shafts and the other end connected to the two impellers.

[0019] Optionally, both of the speed-increasing sections include a magnetic speed-changing device, the magnetic speed-changing device comprising:

[0020] The first disk has sixteen small magnets evenly embedded around its periphery, which are staggered in sequence according to the same magnetic pole. A first connecting shaft is provided between the first disk and the impeller, extending along the axial direction of the flow-increasing pipe. The first disk is installed at one end of the first connecting shaft, and the impeller is connected to the other end of the first connecting shaft.

[0021] A second disk has four large magnets evenly embedded around its periphery, arranged in a staggered pattern with the same magnetic poles. A second connecting shaft extending axially along the flow-increasing pipe is provided between the second disk and the dual-input medium-speed generator. The second disk is mounted on one end of the second connecting shaft, and the extended shaft portion is connected to the other end of the second connecting shaft.

[0022] A conversion disk is disposed between the first disk and the second disk. Ten mating bolts and nuts are evenly embedded around the periphery of the conversion disk. A support seat is provided between the conversion disk and the lower end of the inner wall of the cabin, extending axially along the multiple rigid pillars. The conversion disk is mounted on the support seat.

[0023] The first disk, the second disk, and the conversion disk are all the same size, and the center of the first disk, the center of the second disk, and the center of the conversion disk are all located on the axis of the first connecting shaft.

[0024] Optionally, each of the plurality of support columns includes an elastic support section and a rigid support section. One end of the elastic support section is connected to the lower end of the outer wall of the cabin, and the other end is connected to one end of the rigid support section. The other end of the rigid support section is installed on the first fixed platform.

[0025] Optionally, the upper end of the inner wall of the flow-increasing pipe is provided with a second fixed platform, and the second fixed platform is connected to an elastic element extending along the axial direction of the plurality of rigid supports. The end of the elastic element away from the second fixed platform is connected to the upper end of the outer wall of the cabin.

[0026] Optionally, a current meter is provided at the upper end of the inner wall of the flow-increasing pipe, and both impellers are provided with blade adjustment devices to adjust the angle of the blades according to the water flow velocity and direction in the flow-increasing pipe.

[0027] Optionally, electronic eyes are provided at both ends of the cabin interior wall.

[0028] Optionally, a leak sensor is provided at the lower end of the inner wall of the cabin.

[0029] In this utility model, by connecting the clamp to the semi-submersible jacket foundation, the space on the water surface and in the water depth is not occupied, thus improving the convenience of water transportation. The two ends of the flow-increasing pipe in the clamp are funnel-shaped, which can guide the seawater flowing into the flow-increasing pipe and increase the flow velocity of the seawater flowing into the flow-increasing pipe, thereby increasing the water flow density in the same area, making the impeller rotate faster and thus improving the power generation efficiency and output. The first fixed platform can stably fix the nacelle, and the impellers at both ends of the nacelle can double the power generation, making more effective use of hydrodynamic energy and improving water flow energy absorption. The two units share support, testing and other equipment, reducing amortization costs. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a structural schematic diagram of a twin semi-direct drive tidal current generator set with increased flow velocity according to this utility model.

[0032] Figure 2 yes Figure 1 A schematic diagram of the magnetic speed change device of a twin semi-direct drive tidal current generator set that can increase flow rate.

[0033] Explanation of icon numbers:

[0034]

[0035]

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0040] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0041] Tidal energy refers to the kinetic energy generated by the ocean surface during the rise and fall of tides. Tidal energy is the energy generated by the periodic rise and fall of seawater on the Earth's surface caused by the gravitational pull of celestial bodies such as the moon and the sun. Compared with waves, tidal energy changes more smoothly and regularly. Tidal energy is the kinetic energy formed when the tidal force of the moon and the sun causes the seawater to move back and forth horizontally in a periodic manner. It is mainly concentrated in the waterways or bay mouths between the shore and islands. Tidal energy can be converted into electrical energy or used for other forms of energy utilization.

[0042] Currently, although tidal power generation devices can convert tidal energy into electrical energy, they only have one impeller and cannot increase the flow rate of water, so the power generation efficiency and output are not very high.

[0043] In view of this, the present invention provides a twin semi-direct drive tidal current generator set 100 with increased flow rate. Figure 1 This is one embodiment of the present utility model.

[0044] Please see Figure 1 This utility model provides a twin semi-direct drive tidal current power generator set 100 with increased flow rate. The twin semi-direct drive tidal current power generator set 100 with increased flow rate includes a clamp 2, a flow-increasing pipe 1, a first fixed platform 15, a nacelle 11, and a dual-input medium-speed generator 111. The lower end of the clamp 2 is connected to a plurality of rigid supports 21 arranged at intervals along its axial direction. The ends of the plurality of rigid supports 21 away from the clamp 2 are connected to a semi-submersible jacket foundation 211. The flow-increasing pipe 1 is sleeved and installed on the clamp. Inside the 2nd section, the two ends of the flow-increasing pipe 1 are flared. The first fixed platform 15 is located at the lower end of the inner wall of the flow-increasing pipe 1. The lower end of the nacelle 11 is connected to a plurality of spaced support columns, which are installed on the first fixed platform 15. A portion of the dual-input medium-speed generator 111 is located inside the nacelle 11. The dual-input medium-speed generator 111 includes two extended shaft portions 1111 extending out of both ends of the nacelle 11. Each of the extended shaft portions 1111 is provided with an impeller 12.

[0045] In the technical solution of this utility model, by connecting the clamp 2 to the semi-submersible jacket foundation 211, the space of the water surface and the diving area is not occupied, which improves the convenience of water transportation, etc. The two ends of the flow-increasing pipe 1 in the clamp 2 are funnel-shaped, which can guide the seawater flowing into the flow-increasing pipe 1 and increase the flow velocity of the seawater flowing into the flow-increasing pipe 1, so as to increase the water flow density in the same area, making the impeller 12 rotate faster and thus improving the power generation efficiency and power generation. The first fixed platform 15 can stably fix the nacelle 11. The impellers 12 at both ends of the nacelle 11 can double the power generation, and more effectively utilize the energy of hydrodynamics, improve the absorption of water flow energy, and the two units share support, detection and other equipment, which reduces amortization costs.

[0046] In this embodiment, the twin semi-direct drive tidal current generator set with increased flow rate further includes an auxiliary power generation component disposed within the flow-increasing pipe 1. The auxiliary power generation component includes two columns 13, a mounting rod 131, a helical blade 132, a first gear 1311, and an extended shaft portion 1111a. The two columns 13 are disposed on the upper end of the outer side wall of the nacelle 11 and are arranged at intervals. Both columns 13 are located between the two impellers 12. The mounting rod 131 is rotatably mounted between the two columns 13 and extends axially along the flow-increasing pipe 1. The helical blade 132 extends helically on the mounting rod 131. The first gear 1311 is disposed at the end of the mounting rod 131. The second gear 1111a is disposed on one of the extended shaft portions 1111 and is drivenly connected to the first gear 1311. By configuring the mounting rod 131 and its helical blades 132, seawater flowing through the impeller 12 will reach the helical blades 132. The helical blades 132 and the mounting rod 131 can occupy the top of the entire engine room 11. The seawater flowing through the impeller 12 will still push the helical blades 132, causing the mounting rod 131 to rotate. This, in turn, drives the extended shaft 1111 to rotate through the meshing of the first gear 1311 and the second gear 1111a, further improving the dual-input medium speed. The generator 111 has high power generation efficiency and output. At the same time, because the spiral blades 132 and the mounting rod 131 can occupy the top of the entire nacelle 11, it makes full use of the water resources flowing around the nacelle 11, that is, it makes full use of the energy of hydrodynamics. Furthermore, when the impeller 12 is entangled by seaweed or marine debris, or is damaged and cannot work due to its own reasons, the spiral blades 132 and the mounting rod 131 can also drive the extended shaft 1111 to rotate, thereby enabling the dual-input medium-speed generator 111 to normally complete power generation.

[0047] In another embodiment, the top of the nacelle 11 may also be provided with two mounting rods 131 and their spiral blades 132. Each mounting rod 131 and its spiral blade 132 respectively drives two extended shaft portions 1111. In addition, each of the two mounting rods 131 is equipped with a hemispherical guide shroud 1311a near the ends of the two impellers 12 to promote the flow of seawater through the mounting rods 131 and their spiral blades 132. Moreover, each of the two extended shaft portions 1111 is equipped with a spiral blade 132 located between the nacelle 11 and the impeller 12. The two spiral blades 132 extend spirally on the two extended shaft portions 1111 respectively. This arrangement can maximize the utilization of the energy of the flowing seawater around the nacelle 11, further improve the power generation efficiency and power output, and further ensure the power generation of the dual-input medium-speed generator 111.

[0048] Furthermore, the number of teeth of the first gear 1311 is 2-3 times the number of teeth of the extended shaft portion 1111a. This arrangement causes the rotational speed of one of the extended shaft portions 1111 to be higher than the rotational speed of the mounting rod 131, thus doubling the rotational speed of one of the extended shaft portions 1111 and consequently doubling the power generation of the dual-input medium-speed generator 111.

[0049] In this embodiment, the nacelle 11 is equipped with two speed-increasing sections 112 respectively located between the two impellers 12 and the dual-input medium-speed generator 111. One end of each speed-increasing section 112 is connected to one of the two extended shafts 1111, and the other end is connected to one of the two impellers 12. The two speed-increasing sections 112 can double the rotational speed provided by the impellers 12, making the rotational speed of the two extended shafts 1111 higher than that of the two impellers 12, thereby doubling the power generation of the dual-input medium-speed generator 111.

[0050] Further, please refer to Figure 2Both speed-increasing units 112 include a magnetic speed-changing device 116. The magnetic speed-changing device 116 includes a first disk 1161, a second disk 1162, and a switching disk 1163. The first disk 1161 has sixteen small magnets evenly embedded around its periphery, arranged in a staggered pattern with the same magnetic poles. A first connecting shaft 11611 extending axially along the flow-increasing pipe 1 is provided between the first disk 1161 and the impeller 12. The first disk 1161 is mounted at one end of the first connecting shaft 11611, and the impeller 12 is connected to the other end of the first connecting shaft 11611. The second disk 1162 has four large magnets evenly embedded around its periphery, arranged in a staggered pattern with the same magnetic poles. A second connecting shaft 11621 extending axially along the flow-increasing pipe 1 is provided between the second disk 1162 and the dual-input medium-speed generator 111. The second disk 1162 is installed at one end of the second connecting shaft 11621, and the extended shaft 1111 is connected to the other end of the second connecting shaft 11621. The conversion disk 1163 is disposed between the first disk 1161 and the second disk 1162. Ten mating bolts 11631 and nuts are evenly embedded around the periphery of the conversion disk 1163. A support seat extending axially along the plurality of rigid supports 21 is provided between the conversion disk 1163 and the lower end of the inner wall of the cabin 11. The conversion disk 1163 is installed on the support seat. The first disk 1161, the second disk 1162 and the conversion disk 1163 are the same size, and the center of the first disk 1161, the center of the second disk 1162 and the center of the conversion disk 1163 are all located on the axis of the first connecting shaft 11611. The magnetic speed-changing device 116 has a relatively simple structure and can accelerate the rotational speed of the two impellers 12 without occupying too much space in the nacelle 11, thus doubling the rotation of the two extended shafts 1111. When the impellers 12 drive the first connecting shaft 11611 to rotate under the action of water flow energy, the first disk 1161 on the first connecting shaft 11611 will also rotate coaxially at the same speed. The first disk 1161, through the conversion disk 1163, causes the second disk 1162, which is embedded with four large magnets, to rotate twice, thereby driving the extended shafts 1111 to rotate twice, thereby increasing the power generation. It can be understood that the rotational speed of the extended shafts 1111 can be increased to the required speed by changing the number of magnets embedded on the first disk 1161 and the second disk 1162, and the number of bolts 11631 and nuts embedded on the conversion disk 1163.

[0051] In this embodiment, each of the multiple support columns includes an elastic support section 115 and a rigid support section 1151. One end of the elastic support section 115 is connected to the lower end of the outer wall of the nacelle 11, and the other end is connected to one end of the rigid support section 1151. The other end of the rigid support section 1151 is mounted on the first fixed platform 15. The elastic support section 115 is provided at the lower end of the outer wall of the nacelle 11 to increase the flexibility of the unit during operation and to isolate the vibration influence between the unit and the inner wall of the duct. Alternatively, a full-circle flange + elastomer connection can be used. The rigid support section 1151 is provided below the elastic support section 115 to stably support the nacelle 11.

[0052] In this embodiment, a second fixed platform is provided at the upper end of the inner wall of the flow-increasing pipe 1. The second fixed platform is connected to an elastic element 14 extending along the axial direction of the plurality of rigid supports 21. The end of the elastic element 14 away from the second fixed platform is connected to the upper end of the outer wall of the cabin 11. The elastic element 14 is synchronously and redundantly fixedly connected to the second fixed platform. The elastic element 14 connects the cabin 11 and the second fixed platform, which can both redundancy protect the connection of the cabin 11 and redundancy increase the flexibility of the cabin 11.

[0053] In this embodiment, a current meter 151 is provided on the upper inner wall of the flow-increasing pipe 1, and both impellers 12 are equipped with blade adjustment devices to adjust the blade angle according to the water flow velocity and direction within the flow-increasing pipe 1. The current meter 151 is used to monitor information such as the water flow velocity within the flow-increasing pipe 1 and transmit it to the main control system to adjust and control the operating state of the engine room 11 accordingly. This allows the blade adjustment devices to adjust the blade angle according to the water flow velocity and direction, enabling the two impellers 12 to generate electricity in both forward and backward directions, thus eliminating the need for a yaw mechanism and reducing a potential failure point.

[0054] In this embodiment, electronic eyes 113 are provided at both ends of the inner wall of the cabin 11. The two electronic eyes 113 can monitor the operation inside the cabin 11 in real time.

[0055] In this embodiment, a leakage sensor 114 is installed at the lower end of the inner wall of the cabin 11. This sensor monitors the leakage situation within the cabin 11 in real time and transmits the data to the main control system, allowing for immediate action in the event of a leak.

[0056] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A twin-type semi-direct-drive tidal current generator set with increased flow velocity, characterized in that, include: The clamp has multiple rigid supports arranged at intervals at its lower end along its axial direction, and the ends of the multiple rigid supports away from the clamp are connected to a semi-submersible jacket foundation. A flow-increasing pipe is fitted inside the clamp, and the two ends of the flow-increasing pipe are flared. The first fixed platform is located at the lower end of the inner wall of the flow-increasing pipe; The cabin has a plurality of spaced-apart support columns connected to its lower end, and the plurality of support columns are mounted on the first fixed platform; and, A dual-input medium-speed generator is partially housed within the nacelle. The dual-input medium-speed generator includes two extended shafts extending beyond both ends of the nacelle, each of which is equipped with an impeller.

2. The twin semi-direct drive tidal current generator set with increased flow rate as described in claim 1, characterized in that, It also includes an auxiliary power generation component, disposed within the flow-increasing pipe, the auxiliary power generation component comprising: Two columns are provided on the upper part of the outer wall of the nacelle and are arranged at intervals, with both columns located between the two impellers; The mounting rod is rotatably mounted between the two columns, and the mounting rod extends axially along the flow-increasing pipe. Helical blades, extending helically onto the mounting rod; A first gear is disposed at the end of the mounting rod; and, The second gear is disposed on one of the extended shaft portions and is drivenly connected to the first gear.

3. The twin semi-direct drive tidal current generator set with increased flow rate as described in claim 2, characterized in that, The number of teeth on the first gear is 2-3 times the number of teeth on the second gear.

4. The twin semi-direct drive tidal current generator set with increased flow rate as described in claim 1, characterized in that, The nacelle is equipped with two speed-increasing sections located between the two impellers and the dual-input medium-speed generator. One end of each speed-increasing section is connected to one of the two extended shafts, and the other end is connected to one of the two impellers.

5. The twin semi-direct drive tidal current generator set with increased flow rate as described in claim 4, characterized in that, Both of the aforementioned speed-increasing units include a magnetic speed-changing device, the magnetic speed-changing device comprising: The first disk has sixteen small magnets evenly embedded around its periphery, which are staggered in sequence according to the same magnetic pole. A first connecting shaft is provided between the first disk and the impeller, extending along the axial direction of the flow-increasing pipe. The first disk is installed at one end of the first connecting shaft, and the impeller is connected to the other end of the first connecting shaft. A second disk has four large magnets evenly embedded around its periphery, arranged in a staggered pattern with the same magnetic poles. A second connecting shaft extending axially along the flow-increasing pipe is provided between the second disk and the dual-input medium-speed generator. The second disk is mounted on one end of the second connecting shaft, and the extended shaft portion is connected to the other end of the second connecting shaft. A conversion disk is disposed between the first disk and the second disk. Ten mating bolts and nuts are evenly embedded around the periphery of the conversion disk. A support seat is provided between the conversion disk and the lower end of the inner wall of the cabin, extending axially along the multiple rigid pillars. The conversion disk is mounted on the support seat. The first disk, the second disk, and the conversion disk are all the same size, and the center of the first disk, the center of the second disk, and the center of the conversion disk are all located on the axis of the first connecting shaft.

6. The twin semi-direct drive tidal current generator set with increased flow rate as described in claim 1, characterized in that, Each of the multiple support columns includes an elastic support section and a rigid support section. One end of the elastic support section is connected to the lower end of the outer wall of the cabin, and the other end is connected to one end of the rigid support section. The other end of the rigid support section is installed on the first fixed platform.

7. The twin semi-direct drive tidal current generator set with increased flow rate as described in claim 1, characterized in that, The upper end of the inner wall of the flow-increasing pipe is provided with a second fixed platform. The second fixed platform is connected to an elastic element extending along the axial direction of the plurality of rigid supports. The end of the elastic element away from the second fixed platform is connected to the upper end of the outer wall of the cabin.

8. The twin semi-direct drive tidal current generator set with increased flow rate as described in claim 1, characterized in that, The upper end of the inner wall of the flow-increasing pipe is equipped with a current meter, and both impellers are equipped with blade adjustment devices to adjust the angle of the blades according to the water flow velocity and direction in the flow-increasing pipe.

9. The twin semi-direct drive tidal current generator set with increased flow rate as described in claim 1, characterized in that, Electronic eyes are installed at both ends of the cabin's inner wall.

10. The twin semi-direct drive tidal current generator set with increased flow rate as described in claim 1, characterized in that, A leak sensor is installed at the lower end of the inner wall of the cabin.

Images