CN217976444U

CN217976444U - Underwater power generation device and power system

Info

Publication number: CN217976444U
Application number: CN202222513026.9U
Authority: CN
Inventors: 赵汝峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2022-12-06
Anticipated expiration: 2032-09-22

Abstract

The application discloses an underwater power generation device and a power system, wherein the underwater power generation device comprises a fixed base and a hydrodynamic force generation module; the hydrodynamic force generation module comprises a transmission main shaft, a support rod and a plurality of driving impellers which are arranged at intervals along the length direction of the transmission main shaft; the transmission main shaft is connected with the fixed base through a support rod; the driving impeller comprises a connecting part fixedly connected with the transmission main shaft and a plurality of blades which are radially and uniformly distributed by taking the connecting part as a center, and the blades of the blades form an included angle with the central axis of the transmission main shaft; the transmission main shaft and the driving impeller on the transmission main shaft are arranged in an underwater middle water layer, and the central axis of the transmission main shaft is parallel to the water flow direction; the blades on two adjacent driving impellers on the transmission main shaft are arranged in a staggered mode, and the transmission main shaft forms a power input end of external equipment. The application provides an it is adaptable not have environment of water fall potential energy to power generation facility under water, turns into usable mechanical energy with water power.

Description

Underwater power generation device and power system

Technical Field

The application relates to the technical field of energy machinery, in particular to an underwater power generation device and a power system.

Background

In the development process of the human society, fossil energy is consumed rapidly, and the demand of social development cannot be met only by energy conservation and resource allocation, so that new energy sources such as solar power generation and wind power generation need to be developed vigorously to supplement the fossil energy sources, and the sustainable development of the energy sources is realized.

However, in practical application, renewable energy sources such as solar energy, wind power and tide have instability, so that people cannot control continuous supply of solar energy, wind power and tide, and can only do the same according to natural phenomena, and when natural conditions do not meet power generation conditions, equipment cannot normally operate to generate power, and the interruption of energy supply is caused. In order to effectively store energy and stably provide effective electric energy capable of entering a power grid, the currently adopted technical route is mainly to convert electric energy obtained by power conversion into direct current for storage and then into alternating current for outward transmission by developing chemical or physical batteries with ultra-large capacity. Although the method solves the problem of unstable supply of renewable energy, the method has the disadvantages of complex equipment, low conversion efficiency, high technical cost and high technical difficulty.

The prior art types of power technologies may generally include: 1. the hot steam jet flow provides power for the steam turbine, wherein coal, nuclear fuel and the like are used as energy sources to generate hot water steam; 2. using a gasoline engine to provide power; 3. providing power by using a motor; 4. solar energy and chemical energy are used for providing power; 5. the wind driven generator is used for providing electric energy so as to provide power; 6. the hydraulic resources provide power for the water turbine. Each of these power technology implementations described above has drawbacks.

First, the steam turbine needs to burn fossil energy such as coal, which not only easily causes air pollution but also has limited coal resources. Secondly, gasoline engines need to burn gasoline, but petroleum resources are limited, so that the gasoline engines cannot be used indefinitely, and moreover, the burning of gasoline can cause air pollution. Thirdly, the solar power generation equipment needs sunlight and is limited by natural conditions, the direct sunlight of different regions has different duration and intensity, and the climate of each region is different, so that the conversion can not be realized for a long time if continuous rainy days are met. And fourthly, the chemical energy generated by the chemical storage battery can also generate electricity, but the electric quantity generated by the storage battery is limited, the storage battery is easy to explode, and the filler in the storage battery can pollute the environment. And fifthly, the wind power generation equipment needs to utilize the terrain and natural wind power, the use condition is limited, and in order to solve the problem of different generation frequencies caused by wind speed change, a double-feed generator needs to be adopted, so that the cost is several times higher than that of a common constant-speed generator, and the wind power generation cost is higher. The water flow energy is rarely used for power generation due to unstable flow velocity and flow rate, and the existing water turbine is a power machine which converts the energy of water flow into mechanical energy and uses the high-speed flow of water to impact a rotating wheel to rotate so as to drive a generator to generate power. However, the water flow discharged after the water turbine impacts the impeller to do work under high-speed water has high speed and large energy to be taken away, the friction between the high-speed flowing water and the inside of the machine is large, the power loss is large, and the water turbine cannot do work under the condition of low-speed water under the condition of small flow or low flow speed, so that the machine does not operate, and the water energy is wasted; moreover, the hydraulic turbine of the hydropower station depends on the fall potential energy of water, the terrains of islands and plains are flat, no fall potential energy of water exists, and the hydropower station cannot be built. However, the water flow in rivers, lakes and seas is a natural phenomenon, the water flow is ubiquitous, the total energy is considerable, and the distributed power generation is more significant particularly. Kinetic energy exists in water flow, the kinetic energy is converted into power to serve people, and the low-carbon water-saving power supply is an urgent need of modern human beings for low-carbon life.

Therefore, it is necessary to provide a new technical solution to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The application provides a power generation facility, driving system under water for solve the unable environment that adapts to and does not have the water fall potential energy of hydraulic turbine, lead to not having the unable problem that utilizes the conversion of rivers lake sea water resource of water fall potential energy.

In order to achieve the above object, the present application provides the following technical solutions:

on one hand, the application provides an underwater power generation device which comprises a fixed base and a hydrodynamic power generation module arranged on the fixed base; the hydrodynamic force generation module comprises a transmission main shaft, a support rod and a plurality of driving impellers which are sequentially arranged at intervals along the length extension direction of the transmission main shaft; the transmission main shaft is connected with the fixed base through a support rod; the driving impeller comprises a connecting part fixedly connected with the transmission main shaft and a plurality of blades radially distributed by taking the connecting part as a center, the plurality of blades are uniformly distributed, and included angles are formed between the blades of the blades and the central axis of the transmission main shaft;

the transmission main shaft and the driving impeller on the transmission main shaft are arranged in an underwater middle water layer, and the central axis of the transmission main shaft is parallel to the water flow direction; the blades on two adjacent driving impellers on the transmission main shaft are arranged in a staggered mode, so that water flowing through one driving impeller impacts the blades of the next driving impeller to drive the transmission main shaft to rotate, and the transmission main shaft forms a power input end of external equipment.

Further, the included angle between the plane of the paddle and the central axis of the transmission main shaft is 45-75 degrees.

Further, the transmission main shaft is a columnar galvanized steel main shaft.

Further, the flow velocity of the water in the underwater intermediate water layer is at least 30m/min.

Furthermore, one end of the blade connected with the connecting part forms a blade root fixed end, and the other end extends towards the direction departing from the connecting part to form a blade tip free end; the width of the blade is gradually increased from the fixed end of the blade root to the free end of the blade top.

Further, the hydrodynamic force generation module at least comprises two support rods, and the two support rods are arranged oppositely; one end of the supporting rod is connected with the fixed base, the other end of the supporting rod forms a bearing seat, and the transmission main shaft is installed in a matched mode with the bearing seat; the bearing seat is provided with a bearing, the bearing is sleeved on the transmission main shaft, the transmission main shaft is provided with a mounting groove, and the mounting groove is paired with the mounting limit of the bearing.

Further, the fixed base is arranged under water, or the fixed base is arranged on water; when the fixed base is arranged underwater, the fixed base comprises a building base built underwater, and the transmission main shaft is positioned above the fixed base; when the fixed base is arranged on water, the fixed base comprises a floating seat floating on the water surface, a traction mechanism is arranged on the floating seat, the traction mechanism is connected with external equipment to realize traction positioning of the floating seat, and the transmission main shaft is positioned below the fixed base.

Furthermore, a height adjusting piece is arranged on the supporting rod, and the height adjusting piece adjusts the water inlet depth of the transmission main shaft through height adjustment of the supporting rod.

Furthermore, the height adjusting piece comprises a sliding groove and a locking piece, one end of the sliding groove is connected with the fixed base, the supporting rod is inserted in the sliding groove in a matched mode and can move up and down along the sliding groove, and when the supporting rod is moved to a target position, the supporting rod is fixedly locked through the locking piece; the locking piece comprises a fastening bolt, and the fastening end of the fastening bolt penetrates through the sliding groove and is in fastening butt with the supporting rod so as to lock the supporting rod.

On the other hand, based on the underwater power generation device, the application provides a power system which comprises the underwater power generation device, and a power generation device, a pressure regulating device and a power utilization device which are sequentially connected with the underwater power generation device;

after the transmission main shaft of the underwater power generation device rotates, a coil of the power generation device is driven to do cutting magnetic induction line motion, so that alternating current is generated, and the generated alternating current is subjected to voltage regulation and current stabilization through the voltage regulation device and then is conveyed to the power utilization device.

On the other hand, based on foretell power generation device under water, the application provides a driving system, including foretell power generation device under water, and with the external mechanism that power generation device links to each other under water, power generation device's transmission main shaft rotates the back and drives the external mechanism action that links to each other rather than, the transmission main shaft is used for converting hydrodynamic force into the drive the mechanical energy of external mechanism action.

Furthermore, the external mechanism comprises a hydraulic water pumping mechanism, and a power end of the hydraulic water pumping mechanism is connected with the transmission main shaft.

Compared with the prior art, the method has the following beneficial effects:

1. the underwater power generation device comprises a fixed base and a hydrodynamic force generation module arranged on the fixed base, wherein the hydrodynamic force generation module is arranged underwater; the hydrodynamic force generation module comprises a transmission main shaft, a support rod and a plurality of driving impellers which are sequentially arranged at intervals along the length extension direction of the transmission main shaft, and the hydrodynamic force generation module is fixed on the fixed base through the support rod to prevent the transmission main shaft from moving under the impact of water flow; the driving impeller comprises a plurality of blades which are uniformly distributed in a radial shape, the blade surfaces of the blades form an included angle with the central axis of the transmission main shaft, and the water flow direction is parallel to the central axis of the transmission main shaft, so that the included angle is formed between the blade surfaces and the water flow direction, and when water flow impacts the blades, the blade surfaces of the blades rotate under the impact force of the water flow, and further the transmission main shaft is driven to rotate; moreover, the blades on two adjacent driving impellers on the transmission main shaft are arranged in a staggered mode, so that water flow passing through the gap between the two adjacent blades on one driving impeller impacts the blades of the next driving impeller, and the problem that the driving impeller positioned relatively backward on one hydrodynamic force generation module cannot receive the water flow impact and is wasted in power is avoided. Therefore, the underwater power generation device provided by the application can be applied to the environment without water falling potential energy, and the hydrodynamic force is converted into usable mechanical energy.

2. The application provides a power generation facility's transmission main shaft under water is the galvanized steel material, and weight is lighter and can adapt to the environment under water, and is difficult for rustting corrosion-resistant, can wholly promote power generation facility's under water life, extension maintenance cycle.

3. The application provides a width of power generation facility's paddle under water from the blade root stiff end to the blade top free end crescent, blade top free end width can receive more water impact power greatly, and blade root stiff end width is little can concentrate the moment of receiving on the paddle, does benefit to the rotation of initiative impeller.

4. Based on the power generation facility under water that this application provided, this application still provides a driving system, and this driving system uses power generation facility under water to realize the electricity generation power supply through power generation facility under water as the power generation source, has realized the conversion of hydrodynamic force to the electric energy.

5. Based on the underwater power generation device provided by the application, the application also provides a power system, the power system takes the underwater power generation device as a power output source, and an external mechanism can realize motion work under the power driving of the underwater power generation device, so that the utilization conversion from hydrodynamic force to mechanical energy work is realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. It should be understood that the specific shapes, configurations and illustrations in the drawings are not to be construed as limiting, in general, the practice of the present application; for example, it is within the ability of those skilled in the art to make routine adjustments or further optimizations based on the technical concepts disclosed in the present application and the exemplary drawings, for the increase/decrease/attribution of certain units (components), specific shapes, positional relationships, connection manners, dimensional ratios, and the like.

FIG. 1 is a schematic view of an embodiment of an underwater power generation device provided by the present application from one perspective;

FIG. 2 is a schematic view of an embodiment of an underwater power generation device provided by the present application from another perspective;

FIG. 3 is a schematic view of an embodiment of an underwater power generation apparatus provided by the present application from another perspective;

FIG. 4 is a schematic diagram of an embodiment of an underwater power generation apparatus provided by the present application from a top view;

fig. 5 is a schematic structural diagram of an underwater power generation device provided by the present application in a side view according to an embodiment.

Description of reference numerals:

1. a fixed base;

2. a hydrodynamic force generation module; 21. a transmission main shaft; 22. a driving impeller; 221. a connecting portion; 222. a paddle; 23. a support bar; 231. a bearing seat;

A. the direction of the water flow.

Detailed Description

The present application will be described in further detail below with reference to specific embodiments thereof, with reference to the accompanying drawings.

In the description of the present application: "plurality" means two or more unless otherwise specified. The terms "first", "second", "third", and the like in this application are intended to distinguish one referenced item from another without having a special meaning in technical connotation (e.g., should not be construed as emphasizing a degree or order of importance, etc.). The terms "comprising," "including," "having," and the like, are intended to be inclusive and mean "not limited to" (some elements, components, materials, steps, etc.).

In the present application, terms such as "upper", "lower", "left", "right", "middle", and the like are usually used for the purpose of visual understanding with reference to the drawings, and are not intended to be an absolute limitation of the positional relationship in an actual product. Changes in these relative positional relationships are also considered to be within the scope of the present disclosure without departing from the technical concepts disclosed in the present disclosure.

Example one

The problems of unstable energy sources and application of the existing renewable energy sources such as solar energy, wind energy, tidal energy and the like in the utilization and conversion practice are caused by natural factors such as direct solar radiation time, direct solar radiation intensity, wind power, tidal time period and the like, so that after the cost and equipment are input, the application and conversion time is uncontrollable, the equipment is stopped or has long standby time, and the conversion cannot be continuously carried out. In addition, hydroenergy is also a convertible energy source, such as a water turbine of the existing hydropower station, but the water turbine depends on the fall potential energy of water, the terrains of islands and plains are flat, and the hydropower station cannot be built without the fall potential energy of water. Therefore, water in the flat terrain areas such as islands and plains is urgently needed to be developed and utilized.

In order to solve the problems existing in the prior art, the application provides an underwater power generation device. Referring to fig. 1, 2 and 3, the underwater power generation device includes a fixed base 1 and a hydrodynamic force generation module 2 disposed on the fixed base 1; the hydrodynamic force generation module 2 comprises a transmission main shaft 21, a support rod 23 and a plurality of driving impellers 22 which are sequentially arranged at intervals along the length extension direction of the transmission main shaft 21; the transmission main shaft 21 is connected with the fixed base 1 through a support rod 23; the driving impeller 22 includes a connecting portion 221 fixedly connected to the transmission main shaft 21, and a plurality of blades 222 radially distributed with the connecting portion 221 as a center, the plurality of blades 222 are uniformly distributed, and an included angle is formed between a blade of each blade 222 and a central axis of the transmission main shaft 21. When the underwater water flow control device is applied, the transmission main shaft 21 and the driving impeller 22 thereon are placed in an underwater middle water layer, and referring to fig. 4, the central axis of the transmission main shaft 21 is parallel to the water flow direction a. Referring to fig. 3, the paddles 222 of two adjacent driving impellers 22 on the transmission main shaft 21 are arranged in a staggered manner, so that the water flow passing through one driving impeller 22 impacts the paddles 222 of the next driving impeller 22, and further drives the transmission main shaft 21 to rotate, and the transmission main shaft 21 forms a power input end of an external device.

The utility model provides an underwater power generation device passes through bracing piece 23 to be fixed on fixed baseplate 1, prevents that transmission main shaft 21 from removing under the water impact, guarantees that driving impeller 22 on the transmission main shaft 21 is reliable and stable to rotate. Further, the blade surface of the blade 222 forms an included angle with the central axis of the transmission main shaft 21, and the water flow direction is parallel to the central axis of the transmission main shaft 21, so that the surface of the blade 222 forms an included angle with the water flow direction, and when the blade 222 is impacted by water flow, the surface of the blade 222 rotates under the impact force of the water flow, and then the transmission main shaft 21 is driven to rotate. Furthermore, the blades 222 on two adjacent driving impellers 22 on the transmission main shaft 21 are arranged in a staggered manner, so that the driving impellers 22 on the hydrodynamic force generation module 2, which are relatively positioned later, cannot receive water flow impact, and power waste is avoided. Therefore, the underwater power generation device provided by the application can be applied to the environment without water falling potential energy, and the hydrodynamic force is converted into usable mechanical energy.

The inventor finds that the included angle between the plane of the paddle 222 and the central axis of the transmission main shaft 21 is preferably in the range of 45-75 degrees after experimental tests. Referring to fig. 4, the included angle a between the plane of the paddle 222 and the central axis of the transmission main shaft 21 ranges from 45 ° to 75 °.

In an embodiment, the transmission main shaft 21 of the underwater power generation device is made of galvanized steel, so that the underwater power generation device is light in weight, can adapt to an underwater environment, is not easy to rust and is corrosion-resistant, the service life of the underwater power generation device can be integrally prolonged, and the maintenance period is prolonged.

In one embodiment, the drive shaft 21 and the driving impeller 22 thereon are disposed in an underwater intermediate water layer, wherein the flow rate of the underwater intermediate water layer is at least 30m/min. The device is placed in an underwater middle water layer, so that damage to the device caused by floating objects, underwater silt, stones and the like can be avoided, and the problem of noise of the device is solved.

In one embodiment, the blade 222 is connected to the connection portion 221 at one end to form a fixed blade root end and extends away from the connection portion 221 at the other end to form a free blade tip end. The shape of the blade shown in fig. 1 to 5 is a long strip shape, and the shape of the tip free end of the blade is an arc shape, which is just the shape of the blade in one embodiment, and in other embodiments, the tip free end of the blade may be a straight line shape, and the shape of the entire blade is similar to a trapezoid.

In one embodiment, referring to FIG. 3, the width of the blade 222 increases from the fixed end of the blade root to the free end of the blade tip. The width of the free end of the blade top is large so as to receive more water impact force, and the width of the fixed end of the blade root is small so as to concentrate the torque received by the blade 222, so that the driving impeller 22 is beneficial to rotating.

In one embodiment, referring to fig. 5, one end of the supporting rod 23 is connected to the fixed base 1, and the other end forms a bearing seat 231, and the transmission main shaft 21 is fittingly installed in the bearing seat 231. The hydrodynamic force generation module 2 at least comprises two support rods 23, and the two support rods 23 are arranged oppositely. Further, a bearing is mounted on a bearing seat 231 of the support rod 23, the bearing is sleeved on the transmission main shaft 21, a mounting groove is formed in the transmission main shaft 21, and the mounting groove forms a mounting limit for the bearing.

In one embodiment, the fixed base 1 is arranged underwater, the fixed base 1 comprises a building base built underwater, and the transmission main shaft 21 is located above the fixed base 1.

In another embodiment, the fixed base 1 is arranged on water, the fixed base 1 comprises a floating seat floating on the water surface, a traction mechanism is arranged on the floating seat, the traction mechanism is connected with external equipment to realize traction and positioning of the floating seat, and the transmission main shaft 21 is arranged below the fixed base 1.

Therefore, the conversion that module 2 realized the hydrodynamic force is taken place through hydrodynamic force to the power generation device under water that this application provided, and hydrodynamic force takes place module 2 and receives the water power through paddle 222 on the initiative impeller 22, and under the effect of hydrodynamic force, drives transmission main shaft 21 and rotates, realizes the conversion of hydrodynamic force to usable mechanical energy. The underwater power generation device can be suitable for flat sections in rivers, lakes and seas, is applied to underwater middle water layers, achieves power superposition under the impact of low speed of water flow, finally outputs available mechanical energy, and achieves utilization and conversion of water resources in the flat sections. Furthermore, the underwater power generation device provided by the application is simple in structure, easy to manufacture, low in processing difficulty and capable of reducing the production cost.

Example two

The embodiment of the application provides an underwater power generation device, compares the underwater power generation device that the embodiment one provided, is provided with altitude mixture control spare on this application underwater power generation device's the bracing piece 23, and altitude mixture control spare realizes the regulation to the degree of depth of entry of transmission main shaft 21 through the altitude mixture control to bracing piece 23.

In one embodiment, the height adjusting member comprises a sliding groove and a locking member, one end of the sliding groove is connected with the fixed base 1, the supporting rod 23 is inserted into the sliding groove in a matching manner and can move up and down along the sliding groove, and when the supporting rod 23 is moved to a target position, the supporting rod 23 is fixedly locked through the locking member; the locking piece includes fastening bolt, and fastening bolt's fastening end runs through spout and 23 fastening butts of bracing piece to the realization is to the locking of bracing piece 23.

Of course, the height adjusting member may be set to other structures, and the length of the supporting rod 23 may be extended or contracted, and other mechanical structures with similar functions are not listed in the embodiment of the present application.

EXAMPLE III

Based on foretell underwater power generation device, the embodiment of this application provides a driving system. The power system comprises the underwater power generation device, and a power generation device, a pressure regulating device, a power utilization device and the like which are sequentially connected with the underwater power generation device. After the transmission main shaft 21 of the underwater power generation device rotates, a coil of the power generation device can be driven to do cutting magnetic induction line motion, so that alternating current is generated, and the generated alternating current is subjected to voltage regulation and current stabilization through the voltage regulation device and then is conveyed to the electric device. The underwater power generation device is used for generating power and supplying power, and conversion from hydrodynamic force to electric energy is realized.

In one embodiment, the transmission main shaft 21 of the underwater power generation device can be combined with a planetary gear set variable speed hydraulic pump, a pump station can be built on a fixed floater or on the shore, and then is connected with the pump station through a hydraulic pipe, and a generator is driven by an adjustable hydraulic motor to complete the power generation work.

In one embodiment, the transmission main shaft 21 of the underwater power generation device can drive the generator to generate power in a direct drive mode or a variable speed drive mode, the power is transmitted to a power transformation voltage regulating device on a fixed floater or on the shore through a cable, and the power can be introduced into a power utilization device after being regulated by the power transformation voltage regulating device and stabilized in current.

The paddle 222 of the underwater power generation device provided by the application drives the transmission main shaft 21 to rotate under the impact of flowing water, and after the inventor conducts practical tests, the inventor discovers that after the flowing water impacts the paddle 222, the water also has kinetic energy and can continuously impact the paddle 222 on the subsequent driving impeller 22, and the paddle 222 on two adjacent driving impellers 22 on one transmission main shaft 21 are arranged in a staggered manner, so that the flowing water sequentially impacts a plurality of driving impellers 22 on the transmission main shaft 21, the kinetic energy gathered on the transmission main shaft 21 in the impact process is superposed, the flowing water kinetic energy is converted into the rotation kinetic energy of the transmission main shaft 21, the kinetic energy can be directly driven and converted into electric energy, hydraulic energy and the like after speed change, and the underwater power generation device can be used for pumping water, generating electricity, driving equipment and the like.

The underwater power generation device can be arranged in rivers and oceans, the driving impeller 22 can be driven by water flow after being fixed, the transmission main shaft 21 is driven to rotate, and power can be transmitted to a generator through a transmission mechanism and the like during use. The underwater power generation device provided by the application can transmit the kinetic energy of water to the paddle 222 so as to efficiently convert the water power to generate electricity.

Example four

Based on the underwater power generation device, the application provides a power system which comprises the underwater power generation device and an external mechanism connected with the underwater power generation device, wherein a transmission main shaft 21 of the underwater power generation device drives the external mechanism connected with the underwater power generation device to act after rotating; the external machine comprises a hydraulic machine. Different from the power system provided by the third embodiment, the power system provided by the present embodiment uses the underwater power generation device as a power source to implement mechanical work, and the external mechanism can act under the power drive of the underwater power generation device, thereby implementing the utilization and conversion from hydrodynamic force to kinetic energy work.

In one embodiment, the external mechanism connected to the transmission main shaft 21 of the underwater power generation device may be a hydraulic pumping mechanism, and the hydraulic pumping mechanism may perform hydraulic transmission under the power support of the underwater power generation device to perform a pumping task.

Certainly, utilize the underwater power generation device that this application provided to outside hydraulic pressure mechanism energy supply that draws water, be only an application mode of the underwater power generation device that this application provided. In view of the fact that the underwater power generation device provided by the present application can convert hydrodynamic force into mechanical kinetic energy, the underwater power generation device can also be connected to other mechanisms to provide power for the other mechanisms, which is not listed in this embodiment.

All the technical features of the above embodiments can be arbitrarily combined (as long as there is no contradiction between the combinations of the technical features), and for brevity of description, all the possible combinations of the technical features in the above embodiments are not described; these examples, which are not explicitly described, should be considered to be within the scope of the present description.

The present application has been described in considerable detail with reference to the foregoing general description and specific examples. It should be understood that several conventional adaptations or further innovations of these specific embodiments may also be made based on the technical idea of the present application; however, such conventional modifications and further innovations may also fall within the scope of the claims of the present application as long as they do not depart from the technical idea of the present application.

Claims

1. An underwater power generation device is characterized by comprising a fixed base and a hydrodynamic force generation module arranged on the fixed base; the hydrodynamic force generation module comprises a transmission main shaft, a support rod and a plurality of driving impellers which are sequentially arranged at intervals along the length extension direction of the transmission main shaft; the transmission main shaft is connected with the fixed base through a supporting rod; the driving impeller comprises a connecting part fixedly connected with the transmission main shaft and a plurality of blades radially distributed by taking the connecting part as a center, the plurality of blades are uniformly distributed, and included angles are formed between the blades of the blades and the central axis of the transmission main shaft;

2. The underwater power generation device of claim 1, wherein an included angle between the paddle plane and a central axis of the transmission main shaft is 45 ° to 75 °;

the transmission main shaft is a columnar galvanized steel main shaft;

the flow velocity of the water flow in the underwater intermediate water layer is at least 30m/min.

3. The underwater power generation device of claim 1, wherein one end of the blade connected to the connecting portion forms a blade root fixed end, and the other end extends away from the connecting portion to form a blade tip free end; the width of the blade is gradually increased from the fixed end of the blade root to the free end of the blade top.

4. The underwater power generation device of claim 1 wherein the hydrodynamic force generation module comprises at least two of the support rods, the two support rods being disposed opposite to each other; one end of the supporting rod is connected with the fixed base, the other end of the supporting rod forms a bearing seat, and the transmission main shaft is installed in a matched mode with the bearing seat; the bearing seat is provided with a bearing, the bearing is sleeved on the transmission main shaft, the transmission main shaft is provided with a mounting groove, and the mounting groove is paired with the mounting limit of the bearing.

5. The underwater power generation device of claim 1 wherein the fixed base is disposed underwater or the fixed base is disposed above water;

when the fixed base is arranged underwater, the fixed base comprises a building base built underwater, and the transmission main shaft is positioned above the fixed base;

when the fixed base is arranged on water, the fixed base comprises a floating seat floating on the water surface, a traction mechanism is arranged on the floating seat, the traction mechanism is connected with external equipment to realize traction positioning of the floating seat, and the transmission main shaft is positioned below the fixed base.

6. The underwater power generation device as claimed in claim 1, wherein the support rod is provided with a height adjusting member, and the height adjusting member adjusts the water penetration depth of the transmission main shaft by adjusting the height of the support rod;

the height adjusting piece comprises a sliding groove and a locking piece, one end of the sliding groove is connected with the fixed base, the supporting rod is inserted in the sliding groove in a matched mode and can move up and down along the sliding groove, and when the supporting rod is moved to a target position, the supporting rod is fixedly locked through the locking piece;

the locking piece comprises a fastening bolt, and the fastening end of the fastening bolt penetrates through the sliding groove and is in fastening butt joint with the supporting rod, so that the supporting rod is locked.

7. A power system is characterized by comprising the underwater power generation device as claimed in any one of claims 1 to 6, and a power generation device, a pressure regulating device and a power utilization device which are sequentially connected with the underwater power generation device;

the transmission main shaft of the underwater power generation device rotates to drive a coil of the power generation device to perform cutting magnetic induction line motion, so that alternating current is generated, and the generated alternating current is subjected to voltage regulation and current stabilization by the voltage regulation device and then is conveyed to the power utilization device.

8. A power system, comprising the underwater power generating device as claimed in any one of claims 1 to 6, and an external mechanism connected to the underwater power generating device, wherein a transmission main shaft of the underwater power generating device is rotated to drive the external mechanism connected to the transmission main shaft to move, and the transmission main shaft is configured to convert hydrodynamic force into mechanical energy for driving the external mechanism to move.

9. The power system of claim 8, wherein the external mechanism comprises a hydraulic pumping mechanism, and a power end of the hydraulic pumping mechanism is connected with the transmission main shaft.