CN221195248U

CN221195248U - Low-cost underwater power generation device and power system

Info

Publication number: CN221195248U
Application number: CN202322754099.1U
Authority: CN
Inventors: 赵汝峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-10-13
Filing date: 2023-10-13
Publication date: 2024-06-21
Anticipated expiration: 2033-10-13

Abstract

The application discloses a low-cost underwater power generation device and a power system, wherein the underwater power generation device comprises a fixed base and a plurality of hydrodynamic power generation modules arranged on the fixed base; the hydrodynamic force generation module comprises a transmission main shaft, a support rod and a plurality of radial blade groups which are arranged at intervals along the length direction of the transmission main shaft; the radial blade group comprises a plurality of blades which are radially connected to the transmission main shaft, and blade surfaces of the blades from the blade root end to the blade top end are gradually twisted, so that one part of the blade surfaces are parallel to the central axis of the transmission main shaft, the other part of the blade surfaces form an included angle with the central axis of the transmission main shaft, and the central axis of the transmission main shaft is parallel to the water flow direction; the transmission main shaft is arranged in an underwater middle water layer, blades on two adjacent radial blade groups on the transmission main shaft are arranged in a staggered mode, and the transmission main shaft is connected with external equipment to form a power system; the application can adapt to the environment with low water drop potential energy, converts hydrodynamic force into usable mechanical energy, and has simple integral structure and low manufacturing cost.

Description

Low-cost 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 with low cost, simple and reliable structure and long service life and a power system formed by the underwater power generation device.

Background

In the development process of the human society, the accelerated consumption of fossil energy can not meet the requirements of the social development only by means of energy conservation and resource allocation, so that new energy sources such as solar power generation, wind power generation and the like are also required to be developed greatly to supplement the fossil energy sources, and the sustainable development of the energy sources is realized.

However, in practical applications, it is found that renewable energy sources such as solar energy, wind power and tide have instability, and humans cannot control continuous supply of the solar energy, wind power and tide, so that the renewable energy sources can only take advantage of natural phenomena, and when the natural conditions do not meet the power generation conditions, the equipment cannot normally operate to generate power, so that energy source supply is interrupted. In order to effectively store energy and stably provide effective electric energy capable of entering a power grid, the currently adopted technical route mainly comprises the steps of developing a chemical or physical battery with super-large capacity, converting electric energy obtained by power conversion into direct current for storage, and then converting the direct current into alternating current for transmission. Although the method solves the problem of unstable supply of renewable energy sources, the method has the advantages of complex equipment, low conversion efficiency, high technical cost and high technical difficulty.

The types of prior art 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. providing power by using a gasoline engine; 3. providing power by using a motor; 4. providing power by using solar energy and chemical energy; 5. providing electric energy and further providing power by using a wind driven generator; 6. the hydraulic resource provides power for the water turbine. Each of these implementations of the power technology described above has drawbacks.

First, steam turbines require the combustion of fossil energy sources, such as coal, which is not only prone to air pollution, but also limited in coal resources. Secondly, the gasoline engine needs to burn gasoline, but the petroleum resource is limited, the gasoline engine cannot be used for a long time, and moreover, the air pollution is caused by the gasoline combustion. Thirdly, solar power generation equipment needs sunlight, can be limited by natural conditions, has different direct sunlight duration and intensity in different regions, and has different climates in each region, and if continuous overcast and rainy days are met, the conversion can not be put into effect for a long time. Fourth, chemical energy generated by the chemical storage battery can 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 also pollutes the environment. Fifthly, the wind power generation equipment needs to utilize the topography and the natural wind power, has limited use conditions, and solves the problem of different power generation frequencies caused by wind speed change. The kinetic energy of water flow is rarely used for generating electricity due to unstable flow speed and flow, the existing water turbine is a power machine which converts the energy of water flow into mechanical energy, and the existing water turbine uses the high-speed flow of water to impact the rotating wheel to rotate, so that the generator is driven to generate electricity. However, the water turbine has high water flow speed after the high-speed water impacts the impeller to do work, the taken away energy is large, the friction force between the high-speed running water and the inside of the machine is large, the loss power is large, and when the flow rate is small or the flow velocity is low, the water turbine can not do work under the condition of low-speed water, so that the machine does not operate, and the water energy is wasted; furthermore, the hydraulic turbine of the hydropower station depends on the drop potential energy of water, and the hydropower station cannot be built because the topography is flat, and the water drop potential energy or the low water drop potential energy is not available. However, the water flow in rivers, lakes and seas is a natural phenomenon, the phenomenon is common, and the total energy is quite considerable, especially for distributed power generation. Kinetic energy exists in water flow, and the kinetic energy is converted into power to serve people, so that the energy is an urgent need of modern people for low-carbon life.

Therefore, a new technical solution is needed to solve the problems existing in the prior art.

Disclosure of utility model

The application provides a low-cost underwater power generation device and a power system, which are used for solving the problem that a water turbine cannot adapt to environments without water drop potential energy or low water drop potential energy, so that water resources of rivers, lakes and seas with low water drop potential energy cannot be utilized and converted.

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

In one aspect, the application provides a low-cost 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 supporting rod and a plurality of radial blade groups which are sequentially arranged at intervals along the length extension direction of the transmission main shaft; the radial blade group comprises a plurality of blades radially connected to the transmission main shaft; one end of the blade connected with the transmission main shaft forms a blade root end, the other end of the blade extends away from the transmission main shaft to form a blade top end, and the blade surfaces of the blade from the blade root end to the blade top end are gradually twisted, so that an included angle is formed between one part of the blade surfaces and the central axis of the transmission main shaft, and the other part of the blade surfaces are parallel to the central axis of the transmission main shaft;

The transmission main shaft is connected with the fixed base through a supporting rod; the transmission main shaft and the radial blade group 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 in two adjacent radial blade groups on the transmission main shaft are arranged in a staggered mode, so that water flow passing through one radial blade group is impacted to the blade in the next radial blade group, the transmission main shaft is driven to rotate, and the transmission main shaft forms a power input end of external equipment.

According to the technical scheme, after the paddles are twisted, the angle range of the included angle between at least one part of blade surfaces and the central axis of the transmission main shaft is 45-75 degrees; and the shape of each blade on the transmission main shaft is consistent.

Further, on one blade, a part of the blade surface parallel to the central axis of the transmission main shaft is close to the blade root end of the blade.

Further, the hydrodynamic force generating modules are sequentially connected in series on the fixed base.

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

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

Further, the hydrodynamic generating module at least comprises two supporting rods, and the two supporting rods are oppositely arranged; 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 an adaptive manner 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 formed to limit the mounting 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 under water, the fixed base comprises a building base constructed under water; or the fixed base comprises a suspension seat arranged under water, a traction anchor point is arranged on the suspension seat, and an external mechanism pulls and positions the suspension seat through the traction anchor point; the floating seat is kept underwater by being towed by an external mechanism connected with the floating seat, or the floating seat is towed by an external mechanism connected with the floating seat and floats on the water surface.

Further, 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 and connected with external equipment to achieve traction positioning of the floating seat, and the transmission main shaft is located below the fixed base.

Further, 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 the height adjustment of the supporting rod.

Further, the height adjusting piece comprises a chute and a locking piece, one end of the chute is connected with the fixed base, the supporting rod is inserted into the chute in an adapting way and can move up and down along the chute, and when the supporting rod is moved to a target position, the locking piece is used for realizing fixed locking of the supporting rod; the locking piece comprises a fastening bolt, and the fastening end of the fastening bolt penetrates through the sliding groove and is in fastening abutting connection with the supporting rod so as to lock the supporting rod.

On the other hand, based on the low-cost underwater power generation device, the application provides a power system, which comprises the low-cost underwater power generation device, and a power generation device, a voltage regulating device and an electric device which are sequentially connected with the underwater power generation device;

The transmission main shaft of the underwater power generation device rotates to drive the coil of the power generation device to perform cutting magnetic induction line movement, so that alternating current is generated, and the generated alternating current is conveyed to the power utilization device after being regulated by the voltage regulation device and stabilized.

In still another aspect, the application provides a power system based on the above-mentioned underwater power generating device, which comprises the above-mentioned underwater power generating device, and an external mechanism connected with the underwater power generating device, wherein the transmission main shaft of the underwater power generating device rotates to drive the external mechanism connected with the transmission main shaft to act, and the transmission main shaft is used for converting the hydrodynamic force into mechanical energy for driving the external mechanism to act.

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

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

1. The application provides a low-cost underwater power generation device which comprises a fixed base and a hydrodynamic power generation module arranged on the fixed base, wherein the hydrodynamic power generation module is arranged under water; the hydrodynamic force generation module comprises a transmission main shaft, a supporting rod and a plurality of radial blade groups which are sequentially arranged at intervals along the length extension direction of the transmission main shaft, wherein each radial blade group comprises a plurality of blades which are radially connected to the transmission main shaft, the blade faces of the blades from the blade root end to the blade tip end are gradually twisted, so that one part of the blade faces are parallel to the central axis of the transmission main shaft, the other part of the blade faces form an included angle with the central axis of the transmission main shaft, the water flow direction is parallel to the central axis of the transmission main shaft, therefore, the part of the blade faces on the blades form an included angle with the water flow direction, when the water flow impacts the blades, the part of the blade faces forming the included angle bear the water flow impact, the water resistance can be reduced, the blades smoothly rotate under the impact force of the water flow under the combined action, and further, the transmission main shaft is driven to rotate, in addition, the hydrodynamic force generation module is fixed on the fixed base through the supporting rod, the transmission main shaft is prevented from moving under the water flow impact, and the stable rotation of the transmission main shaft is ensured; moreover, the blades in two adjacent radial blade groups on the transmission main shaft are arranged in a staggered mode, so that water flow passing through a gap between two adjacent blades in one radial blade group is impacted to the blade in the next radial blade group, and the phenomenon that the blades in the radial blade group at a relatively rear position on one hydrodynamic generating module cannot accept the water flow impact, so that power waste is caused is avoided. Therefore, the underwater power generation device provided by the application can be applied to an environment with low water drop potential energy, and can convert hydrodynamic force into usable mechanical energy, and the underwater power generation device has the advantages of simple integral structure, low manufacturing cost and low manufacturing difficulty.

2. The paddles forming the radial vane group are directly connected to the transmission main shaft, and can be integrally formed with the transmission main shaft during manufacturing, so that the production process is simplified; in addition, the blade is directly connected to the transmission main shaft, so that the moment gathered at the blade root part directly acts on the transmission main shaft, and the transmission main shaft is driven to rotate.

3. The fixed base of the low-cost underwater power generation device is mainly used for fixing the transmission main shaft and ensuring stable rotation of the transmission main shaft, if the fixed base is arranged underwater, the suspension seat can be arranged underwater in a traction mode through an external mechanism, a traction anchor point which can be fixedly connected with the external mechanism is arranged on the suspension seat, when the device works normally, the fixed base is stably towed underwater, when maintenance is needed, the suspension seat can be floated on the water surface through operating the external mechanism, the maintenance is convenient, and other special conditions such as underwater natural disasters and the like can be avoided when the suspension seat floats on the water surface.

4. The transmission main shaft of the low-cost underwater power generation device is made of galvanized steel, has lighter weight, can adapt to the underwater environment, is not easy to rust and corrosion, can integrally prolong the service life of the underwater power generation device, and prolongs the maintenance period.

5. The application further provides a power system, wherein the power system takes the underwater power generation device as a power generation source, and the underwater power generation device is used for generating electricity and supplying power, so that the conversion from hydrodynamic power to electric energy is realized.

6. Based on the low-cost 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 movement work under the power drive of the underwater power generation device, so that the utilization conversion from hydrodynamic power to mechanical energy work is realized.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed 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 other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. It should be understood that the specific shape and configuration shown in the drawings are not generally considered limiting conditions in carrying out the application; for example, those skilled in the art will be able to make routine adjustments or further optimizations for the addition/subtraction/attribution division, specific shapes, positional relationships, connection modes, dimensional proportion relationships, and the like of certain units (components) based on the technical concepts and the exemplary drawings disclosed in the present application.

FIG. 1 is a schematic view of an underwater power generation device according to an embodiment of the present application in a first view;

FIG. 2 is a schematic view of the underwater power generation device shown in FIG. 1 in a second view;

FIG. 3 is a schematic view of the underwater power generation device shown in FIG. 1 in a third view;

FIG. 4 is a schematic view of the underwater power generation device shown in FIG. 1 in a top view;

Fig. 5 is a schematic view of the underwater power generation device shown in fig. 1 in a front view.

Reference numerals illustrate:

1. A hydrodynamic force generation module; 11. a transmission main shaft; 12. a paddle; 13. a support rod; 14. a bearing seat;

A. The direction of the water flow.

Detailed Description

The application will be further described in detail by means of specific embodiments with reference to the accompanying drawings.

In the description of the present application: unless otherwise indicated, the meaning of "a plurality", "a number" or "a plurality" is two or more. The terms "comprising," "including," "having," and the like, as used herein, are intended to be "without limitation" (some elements, components, materials, steps, etc.).

Example 1

In the existing practice of utilizing and converting renewable energy sources such as solar energy, wind energy and tidal energy, the energy sources are unstable, the application is limited by natural factors such as the direct solar irradiation time length, direct irradiation intensity, wind power size and tidal time period, and the like, so that after the cost and equipment are input, the application conversion time is uncontrollable, the equipment is stopped or standby time is long, and the conversion cannot be continuously carried out. In addition, water energy is also a convertible energy source, such as a water turbine of an existing hydropower station, but the hydropower station cannot be built due to the fact that the water turbine depends on the drop potential energy of water, and the topography is flat, and no water drop potential energy or low water drop potential energy exists. Therefore, the water energy of the river, lake and sea water resources with low water drop potential energy needs to be developed and utilized.

In order to solve the problems in the prior art, the utility model provides a low-cost underwater power generation device. The present utility model is a further structural improvement based on the patented utility model patent of application number CN202222513026.9, filed by applicant at 22, 9, 2022. The structure of the low-cost underwater power generation device provided by the utility model is described in detail below.

Referring to fig. 1, 2 and 3, the low-cost underwater power generation device comprises a fixed base and a hydrodynamic power generation module 1 arranged on the fixed base; the hydrodynamic force generation module 1 comprises a transmission main shaft 11, a supporting rod 13 and a plurality of radial blade groups which are sequentially arranged at intervals along the length extension direction of the transmission main shaft 11; the radial blade group comprises a plurality of blades 12 radially connected to the transmission main shaft 11; the blade 12 forms the blade root end with the one end that transmission main shaft 11 links to each other, and blade 12 other end deviates from transmission main shaft 11 and extends and form the leaf top, twists gradually from blade root end to the blade face of leaf top blade 12, and the process of twisting is the natural deflection transition for a part of blade face forms the contained angle with the central axis of transmission main shaft 11, and another part of blade face is parallel with the central axis of transmission main shaft 11, and parallel blade face is also parallel with the rivers direction, does benefit to the water resistance that reduces blade 12, and the blade face that forms the contained angle with transmission main shaft 11 is facing rivers, bears the rivers impact, drives transmission main shaft 11 and rotates. When in use, the transmission main shaft 11 is connected with the fixed base through the supporting rod 13; the transmission main shaft 11 and the radial blade group thereon are placed in the underwater medium water layer, see fig. 4, and the central axis of the transmission main shaft 11 is parallel to the water flow direction a.

The underwater power generating device provided by the application is fixed on the fixed base through the supporting rod 13, so that the transmission main shaft 11 is prevented from moving under the impact of water flow, and the stable and reliable rotation of the paddles 12 on the transmission main shaft 11 is ensured. Referring to the figure, the blades 12 in two adjacent radial blade groups on the transmission main shaft 11 are arranged in a staggered manner, so that water flow passing through one radial blade group is impacted onto the blade 12 of the next radial blade group, and then the transmission main shaft 11 is driven to rotate, and the transmission main shaft 11 forms a power input end of external equipment. The blades 12 in the two adjacent radial blade groups are arranged in a staggered manner, so that the problem that the radial blade groups on the hydrodynamic generating module are unable to accept water flow impact and power waste is caused can be avoided. Therefore, the underwater power generation device provided by the application can be applied to the environment with low water drop potential energy, and can convert hydrodynamic power into usable mechanical energy.

After experimental tests, the inventor finds that after the blade 12 is gradually twisted, the angle range of the included angle between a part of blade surfaces and the central axis of the transmission main shaft 11 is preferably 45-75 degrees. Referring to fig. 4, the included angle a between the plane of the blade 12 near She Dingduan and the central axis of the transmission main shaft 11 is in the range of 45 ° to 75 °. In the specific processing and manufacturing, the blade with proper area and the central axis of the transmission main shaft 11 can form an included angle, and the determination of the proper area can be measured according to the water flow velocity of the water area where the device is specifically installed, the target rotating speed of the transmission main shaft 11, the specific installation condition and the like. However, it should be noted that the shape of each blade 12 on the transmission main shaft 11 is consistent, that is, the twisted shape of each blade 12 is consistent, and the angle after twisting is consistent.

In one embodiment, the transmission main shaft 11 of the underwater power generation device is made of galvanized steel, has light weight, can adapt to the underwater environment, is not easy to rust and corrosion, can integrally prolong the service life of the underwater power generation device, and prolongs the maintenance period. Of course, other materials may be selected for the transmission main shaft 11 according to the use requirement.

In one embodiment, in order to further ensure the service life of the device, reinforcing ribs may be provided on the blade 12, the reinforcing ribs are columnar ribs provided along the extending direction of the blade plane, and the number of the reinforcing ribs may be selected independently according to practical situations.

In one embodiment, the transmission main shaft 11 and the radial blade group thereon are arranged in the underwater middle water layer, and the flow velocity of the water flow in the underwater middle water layer is at least 30m/min. The device can be prevented from being damaged by floating objects on water, underwater sediment, stones and the like when the device is placed in an underwater middle water layer, and the noise problem of the device is also solved.

The plurality of hydrodynamic force generating modules can be sequentially connected in series on the fixed base, and the number of the hydrodynamic force generating modules is mainly determined according to the specific situation of the installation water area.

In one embodiment, the end of the blade 12 connected to the drive shaft 11 forms a blade root end, and the other end extends in a direction away from the drive shaft 11 to form a blade tip end. The blade 12 shown in fig. 1 to 5 is approximately helical in shape, i.e. the blade root end is parallel to the central axis of the drive shaft 11, and the blade is gradually twisted towards the blade tip end so that the part of the blade surface near the blade tip end forms an angle with the central axis of the drive shaft 11. Of course, only one blade 12 shape is illustrated, in other embodiments, the blade 12 may be twisted multiple turns to form a complete spiral, so that the blades parallel to the water flow direction and the blades forming an angle with the water flow direction are alternately arranged at intervals, and multiple segments of blades parallel to the water flow direction and the blades forming an angle with the water flow direction are formed on one blade 12. When the blade 12 is impacted by water flow, the part of the blade surfaces forming an included angle bear the impact of the water flow, the part of the blade surfaces parallel to the water flow can reduce the water resistance, and the blade 12 smoothly rotates under the impact force of the water flow under the combined action, so that the transmission main shaft 11 is driven to rotate, and a better hydrodynamic effect is realized.

In one embodiment, see fig. 5, the support bar 13 is connected at one end to the stationary base and at the other end forms a bearing seat 14, the transmission spindle 11 being fitted with the bearing seat 14. The hydrodynamic generating module at least comprises two supporting rods 13, and the two supporting rods 13 are oppositely arranged. Further, a bearing is installed on the bearing seat 14 of the supporting rod 13, the bearing is sleeved on the transmission main shaft 11, an installation groove is formed in the transmission main shaft 11, and the installation groove is formed to limit the installation of the bearing.

In one embodiment, the stationary base is disposed underwater, the stationary base comprising a building base constructed underwater, and the drive spindle 11 is located above the stationary base. In other embodiments, the fixed base arranged under water comprises a floating seat arranged under water, a traction anchor point is arranged on the floating seat, and the external mechanism pulls and positions the floating seat through the traction anchor point; the floating seat is kept under water by being towed by an external mechanism connected with the floating seat, or the floating seat is floated on the water by being towed by the external mechanism connected with the floating seat. The structural form has strong controllability; when the device works normally, the fixed base is towed to be stable under water, and when maintenance is needed, the suspension seat can be floated on the water surface by operating the external mechanism, so that the maintenance is convenient, and other special conditions such as underwater natural disasters can be avoided when the suspension seat is floated on the water surface.

In another embodiment, 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 achieve traction positioning of the floating seat, and the transmission main shaft 11 is arranged below the fixed base.

Therefore, the underwater power generation device provided by the application realizes the conversion of hydrodynamic force through the hydrodynamic force generation module, the hydrodynamic force generation module receives the hydrodynamic force through the blade 12 on the hydrodynamic force generation module and drives the transmission main shaft 11 to rotate under the action of the hydrodynamic force, so that the conversion from the hydrodynamic force to the available mechanical energy is realized. The underwater power generation device can be suitable for flat sections in rivers, lakes and seas, is placed in an underwater reclaimed water layer for application, achieves power superposition under the low-speed impact of water flow, finally outputs available mechanical energy, and achieves the utilization conversion of water resources of the flat sections. Furthermore, the underwater power generation device provided by the application has the advantages of simple structure, easiness in manufacturing, low processing difficulty and reduction in production cost.

Example two

Compared with the underwater power generation device provided by the first embodiment, the underwater power generation device provided by the embodiment of the application has the advantages that the supporting rod 13 of the underwater power generation device is provided with the height adjusting piece, and the height adjusting piece adjusts the water entering depth of the transmission main shaft 11 through the height adjustment of the supporting rod 13.

In one embodiment, the height adjusting piece comprises a chute and a locking piece, one end of the chute is connected with the fixed base, the supporting rod 13 is inserted in the chute in an adapting way and can move up and down along the chute, and when the supporting rod 13 is moved to a target position, the locking piece is used for realizing fixed locking of the supporting rod 13; the locking piece comprises a fastening bolt, and the fastening end of the fastening bolt penetrates through the sliding groove and is in fastening abutting connection with the supporting rod 13, so that the supporting rod 13 is locked.

Of course, the height adjusting member may be configured in other structures, and the length of the supporting rod 13 may be extended or contracted, which is not a mechanical structure with similar functions.

Example III

Based on the underwater power generation device, the embodiment of the application provides a power system. The power system comprises the underwater power generation device, and a power generation device, a voltage regulating device, an electricity utilization device and the like which are sequentially connected with the underwater power generation device. The transmission main shaft 11 of the underwater power generation device can drive the coil of the power generation device to do cutting magnetic induction line movement after rotating, thereby generating alternating current, and the generated alternating current is conveyed into the power utilization device after being regulated and stabilized by the voltage regulation device. The underwater power generation device is used for generating electricity and supplying power, and the conversion from hydrodynamic power to electric energy is realized.

In one embodiment, the transmission main shaft 11 of the underwater power generation device can be combined with a planetary gear set to change speed to form a hydraulic pump, a pump station can be built on a fixed floater or on shore, the pump station is connected through a hydraulic pipe, and an electric generator is driven by an adjustable hydraulic motor to complete the power generation work.

In one embodiment, the transmission main shaft 11 of the underwater power generating device can drive the generator to generate power in a direct driving mode or a variable speed driving mode, the power is transmitted to the fixed floating object or the on-shore power transformation voltage regulating equipment through a cable, and the power can be introduced into the electric equipment after the voltage and the current are regulated by the power transformation voltage regulating equipment.

According to the underwater power generation device provided by the application, the blade 12 drives the transmission main shaft 11 to rotate under the impact of flowing water, and the inventor finds that after the blade 12 is impacted by the flowing water, the water also has kinetic energy, can continuously impact the blade 12 in the subsequent radial blade groups, and the blades 12 in the two adjacent radial blade groups on one transmission main shaft 11 are arranged in a staggered manner, so that the water flow sequentially impacts a plurality of radial blade groups on the transmission main shaft 11, the accumulated kinetic energy on the transmission main shaft 11 is superposed in the impact process, the flowing water kinetic energy is converted into the rotational kinetic energy of the transmission main shaft 11, and the kinetic energy can be converted into electric energy, hydraulic energy and the like after direct driving and speed changing, and can be used for pumping water, generating electricity, driving equipment and the like.

The underwater power generating device provided by the application can be placed in a river or sea, and after being fixed, the paddle 12 can be driven by water flow, so that the transmission main shaft 11 is driven to rotate, and when in use, power can be transmitted to the generator through a transmission mechanism and the like. The underwater power generation device provided by the application can transmit the kinetic energy of water to the blade 12 so as to generate electricity through the high-efficiency conversion of the water power.

Example IV

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 11 of the underwater power generation device rotates and then drives the external mechanism connected with the transmission main shaft to act; the external mechanism includes a hydraulic mechanism. The power system provided by the embodiment takes the underwater power generating device as a power source to realize mechanical work, and the external mechanism can act under the power drive of the underwater power generating device to realize the utilization conversion from hydrodynamic to kinetic energy.

In one embodiment, the external mechanism connected to the transmission main shaft 11 of the underwater power generation device may be a hydraulic pumping mechanism, which can perform hydraulic transmission under the power support of the underwater power generation device to perform pumping tasks.

Of course, the power generation device provided by the application can be used for supplying energy to the external hydraulic pumping mechanism, and is only one application mode of the power generation device provided by the application. In view of the fact that the underwater power generating device provided by the application can convert hydrodynamic force into mechanical kinetic energy, the underwater power generating device can be connected with other mechanisms to provide power for the other mechanisms, and the embodiment is not listed one by one.

Any combination of the technical features of the above embodiments may be performed (as long as there is no contradiction between the combination of the technical features), and for brevity of description, all of the possible combinations of the technical features of the above embodiments are not described; these examples, which are not explicitly written, should also be considered as being within the scope of the present description.

The application has been described above with particularity and detail in connection with general description and specific embodiments. It should be understood that numerous conventional modifications and further innovations may be made to these specific embodiments, based on the technical concepts of the present application; but these 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 spirit of the present application.

Claims

1. The low-cost underwater power generation device is characterized by comprising a fixed base and a water power generation module arranged on the fixed base; the hydrodynamic force generation module comprises a transmission main shaft, a supporting rod and a plurality of radial blade groups which are sequentially arranged at intervals along the length extension direction of the transmission main shaft; the radial blade group comprises a plurality of blades radially connected to the transmission main shaft; one end of the blade connected with the transmission main shaft forms a blade root end, the other end of the blade extends away from the transmission main shaft to form a blade top end, and the blade surfaces of the blade from the blade root end to the blade top end are gradually twisted, so that an included angle is formed between one part of the blade surfaces and the central axis of the transmission main shaft, and the other part of the blade surfaces are parallel to the central axis of the transmission main shaft;

2. The low-cost underwater power generation device of claim 1, wherein after the blade is twisted, an angle between at least a part of the blade surface and the central axis of the transmission main shaft ranges from 45 degrees to 75 degrees; and the shape of each blade on the transmission main shaft is consistent.

3. The low cost underwater power generation device of claim 1, wherein a portion of the blade surface parallel to the central axis of the transmission shaft on one of the blades is adjacent to the blade root end of the blade.

4. The low-cost underwater power generation device of claim 1, wherein a plurality of the water power generation modules are sequentially connected in series on the fixed base;

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

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

5. The low-cost underwater power generation device of claim 1, wherein the hydrodynamic power generation module comprises at least two support bars, the two support bars 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 an adaptive manner 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 formed to limit the mounting of the bearing.

6. The low cost underwater power generation apparatus of claim 1 wherein the stationary base is disposed underwater or the stationary base is disposed on water;

When the fixed base is arranged under water, the fixed base comprises a building base constructed under water; or the fixed base comprises a suspension seat arranged under water, a traction anchor point is arranged on the suspension seat, and an external mechanism pulls and positions the suspension seat through the traction anchor point; the suspension seat is kept underwater by being towed by an external mechanism connected with the suspension seat, or the suspension seat is floated on the water by being towed by the external mechanism connected with the suspension seat;

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 and connected with external equipment to realize traction positioning of the floating seat, and the transmission main shaft is positioned below the fixed base.

7. The low-cost underwater power generation device according to claim 1, wherein a height adjusting member is provided on the support rod, and the height adjusting member adjusts the water depth of the transmission main shaft by adjusting the height of the support rod;

The height adjusting piece comprises a chute and a locking piece, one end of the chute is connected with the fixed base, the supporting rod is inserted into the chute in an adapting way and can move up and down along the chute, and when the supporting rod is moved to a target position, the locking piece is used for realizing the fixed locking of the supporting rod;

The locking piece comprises a fastening bolt, and the fastening end of the fastening bolt penetrates through the sliding groove and is in fastening abutting connection with the supporting rod so as to lock the supporting rod.

8. A power system, characterized by comprising the low-cost underwater power generation device of any one of claims 1-7, and a power generation device, a voltage regulating device and an electric device which are sequentially connected with the low-cost underwater power generation device;

The transmission main shaft of the low-cost underwater power generation device rotates and then drives the coil of the power generation device to do cutting magnetic induction line movement, so that alternating current is generated, and the generated alternating current is conveyed into the power utilization device after being regulated by the voltage regulating device and stabilized.

9. A power system, characterized by comprising the underwater power generation device of any one of claims 1-7 and an external mechanism connected with the low-cost underwater power generation device, wherein a transmission main shaft of the low-cost underwater power generation device rotates to drive the external mechanism connected with the low-cost underwater power generation device to act, and the transmission main shaft is used for converting hydrodynamic power into mechanical energy for driving the external mechanism to act.

10. The power system of claim 9, wherein the external mechanism comprises a hydraulic pump mechanism, a power end of the hydraulic pump mechanism being coupled to the drive shaft.