CN119021819A - Energy storage power generation device and method of using the same - Google Patents
Energy storage power generation device and method of using the same Download PDFInfo
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- CN119021819A CN119021819A CN202411134814.4A CN202411134814A CN119021819A CN 119021819 A CN119021819 A CN 119021819A CN 202411134814 A CN202411134814 A CN 202411134814A CN 119021819 A CN119021819 A CN 119021819A
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- energy storage
- water tank
- water
- power generation
- release mechanism
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B17/00—Other machines or engines
- F03B17/02—Other machines or engines using hydrostatic thrust
- F03B17/025—Other machines or engines using hydrostatic thrust and reciprocating motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G3/00—Other motors, e.g. gravity or inertia motors
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The application relates to the technical field of ocean energy utilization, and discloses an energy storage power generation device and a use method thereof. According to the energy storage power generation device provided by the application, when the water inlet on the shell of the water tank is opened, seawater can enter the water storage cavity of the shell until the water tank gradually descends after the gravity of the water tank is larger than the buoyancy of the water tank, and the lead screw is vertically arranged in the ocean and is in threaded connection with the lead screw by using the water tank, so that the lead screw is driven to rotate in the descending process of the water tank, and the rotating end of the generator is driven to rotate, thereby realizing power generation. In the application, the combination of gravity energy storage, buoyancy energy storage and wave energy power generation can be realized, stable electric energy output is provided in the unstable wave energy power generation process, and the energy storage power generation device can stably supply power under different wave conditions.
Description
Technical Field
The invention relates to the technical field of ocean energy utilization, in particular to an energy storage power generation device and a use method thereof.
Background
Wave energy belongs to one of the most extensive ocean energy sources, the sea area of China is wide, coastal cities are developed in economy and large in electricity consumption, and the development and utilization of the wave energy are an indispensable part of the development and utilization of clean energy sources of China.
Conventional wave power generation systems utilize a cylindrical or spherical float to follow wave motion to generate electricity, and when a surge comes, the float moves up and down once. However, the surge movement is uneven, so that the fluctuation of the wave on the water surface is not large in many cases, and the generation of the generator is uneven easily.
Disclosure of Invention
In view of the above, the invention provides an energy storage power generation device and a use method thereof, so as to solve the problems of uneven power generation and low conversion efficiency of wave energy.
In a first aspect, the present invention provides an energy storage power generation device comprising a generator and an energy storage and release mechanism. Specifically, the energy storage and release mechanism comprises a screw rod, a water tank and a water pump, wherein the screw rod is used for converting rotary motion into linear motion in the vertical direction, the screw rod is vertically arranged in the ocean, the water tank is in threaded connection with the screw rod, the water tank comprises a shell, a water storage cavity is arranged in the shell, a water inlet communicated with the water storage cavity is formed in the shell, an opening and closing structure is arranged at the water inlet and used for controlling the water inlet to be switched and arranged between an opening state and a closing state, and the water pump is used for conveying accumulated water in the water storage cavity into the ocean; the rotating end of the generator is in transmission connection with the screw rod.
The beneficial effects are that: when the water inlet on the casing of water tank is opened, the water storage cavity of casing can be got into to the sea water, until after the water tank gravity is greater than its buoyancy that receives, the water tank descends gradually, because the vertical arrangement of lead screw is in the ocean to use water tank and lead screw threaded connection, consequently the in-process that the water tank descends can drive the lead screw and rotate, and then drive the rotation end of generator and rotate, realize the electricity generation. In the application, the combination of gravity energy storage, buoyancy energy storage and wave energy power generation can be realized, stable electric energy output is provided in the unstable wave energy power generation process, and the energy storage power generation device can stably supply power under different wave conditions.
In an alternative embodiment, the energy storage power generation device further comprises a guide piece and a circumferential rotating piece, wherein the guide piece is installed in the ocean, at least one guide sliding rail is arranged in the guide piece, and the guide direction of the guide sliding rail is vertical; the water tank is positioned in the guide sliding rail, and at least one outer side wall surface of the water tank is in sliding connection with the guide sliding rail through a circumferential rotating piece; wherein, circumference rotation piece rotatable install in the water tank.
The beneficial effects are that: through being equipped with the guide, specifically, be equipped with the direction slide rail in the guide to be equipped with the peripheral direction rotation piece with direction slide rail sliding connection with the outer wall surface of water tank, make the water tank can follow the direction removal of direction slide rail, and reduce the degree of friction that receives at the in-process that removes, make the water tank can steadily remove.
In an alternative embodiment, the guide slide rail is provided with two or more guide slide rails, and the two or more guide slide rails are arranged in groups and are arranged oppositely; the circumferential rotating pieces are arranged in one-to-one correspondence with the guide sliding rails.
In an alternative embodiment, a clamping sleeve is arranged at the bottom of the guide sliding rail and used for limiting and clamping the water tank.
The beneficial effects are that: through being equipped with the cutting ferrule in the bottom of direction slide rail, can carry out the joint to the water tank when the water tank removes cutting ferrule position department, avoid the water tank to appear along phenomenon such as forward, reverse movement.
In an alternative embodiment, the housing is provided with threaded connections provided through its top and bottom, which are in threaded connection with the lead screw; wherein, the lead screw runs through in the casing.
In an alternative embodiment, the shell is further provided with a water outlet communicated with the water storage cavity; the water pump is installed in the water tank, the water inlet end of the water pump extends to the bottom of the water storage cavity, and the water outlet end of the water pump extends to the water outlet.
The beneficial effects are that: in the process of pumping the seawater stored in the water storage cavity by the water pump, the water inlet end of the water pump extends to the bottom of the water storage cavity, so that the phenomenon that the water pump cannot pump the seawater is avoided, the water pump can pump the seawater stably, the water outlet end of the water pump extends to the water outlet, and the seawater pumped by the water pump can be discharged to the ocean.
In an alternative embodiment, at least two energy storage and release mechanisms are arranged in parallel in the horizontal direction; in the adjacent two energy storage and release mechanisms, one water tank is arranged at the top of the screw rod, and the other water tank is arranged at the bottom of the screw rod.
The beneficial effects are that: the water tanks of the at least two energy storage and release mechanisms are alternately arranged, so that the adjacent two water tanks move in opposite directions in the vertical direction, the cooperative work is realized, the fluctuation and intermittence of waves can be balanced, the energy storage power generation device can always provide stable electric energy output, and when the wave energy is insufficient, the at least two energy storage and release mechanisms release energy simultaneously to maintain the stability of a power grid.
In an alternative embodiment, the energy storage power generation device further comprises a wave power generation mechanism, wherein the wave power generation mechanism is located above the sea level and is used for being electrically connected with the water pump.
The beneficial effects are that: by additionally arranging the wave energy power generation mechanism, the electric energy generated by the wave energy power generation mechanism can be supplied to the water pump.
In a second aspect, the present invention further provides a method for using an energy storage power generation device, where the energy storage power generation device is applied to the first aspect, the energy storage power generation device includes at least two energy storage and release mechanisms, two adjacent energy storage and release mechanisms include a first energy storage and release mechanism and a second energy storage and release mechanism, when a water tank of one of the two mechanisms is located at the top of a lead screw where the water tank of the two mechanisms is located, and when the water tank of the other one of the two mechanisms is located at the bottom of the lead screw where the water tank of the two mechanisms is located, the method for using the energy storage power generation device includes: step S1: when the first energy storage and release mechanism is positioned at the top of a lead screw where the first energy storage and release mechanism is positioned, a water inlet of a water tank in the first energy storage and release mechanism is opened, seawater enters a water storage cavity of the first energy storage and release mechanism, the water tank in the first energy storage and release mechanism descends to drive the lead screw where the first energy storage and release mechanism is positioned to rotate, a water inlet of the water tank in the second energy storage and release mechanism is closed, a water pump is started to transmit seawater in the water storage cavity of the first energy storage and release mechanism to the ocean, and the water tank in the second energy storage and release mechanism ascends to drive the lead screw where the second energy storage and release mechanism is positioned to rotate; step S2: when the second energy storage and release mechanism is positioned at the top of the lead screw where the second energy storage and release mechanism is positioned, a water inlet of a water tank in the second energy storage and release mechanism is opened, seawater enters a water storage cavity of the second energy storage and release mechanism, the water tank in the second energy storage and release mechanism descends to drive the lead screw where the second energy storage and release mechanism is positioned to rotate, the water inlet of the water tank in the first energy storage and release mechanism is closed, a water pump is started to transmit seawater in the water storage cavity of the second energy storage and release mechanism to the ocean, and the water tank in the first energy storage and release mechanism ascends to drive the lead screw where the first energy storage and release mechanism is positioned to rotate; step S3: and repeating the step S1 and the step S2 until the energy storage and the power generation are completed.
The beneficial effects are that: by reasonably configuring at least two energy storage and release mechanisms, the overall efficiency of the wave energy power generation system can be remarkably improved. On one hand, the energy storage device can stabilize the fluctuation of wave energy power generation and realize the storage of wave energy electric energy; on the other hand, the intelligent control system can optimize the energy storage and release processes, and further improve the energy utilization efficiency.
In an alternative embodiment, when the water tank in any energy storage and release mechanism moves to the bottom of the screw rod, the water tank is clamped by the clamping sleeve, so that the water tank is limited to move in the vertical direction, and the clamping sleeve where the water tank in the other energy storage and release mechanism is positioned is opened, so that the water tank moves in the vertical direction.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a simplified diagram of an energy storage power generation device provided by the present invention;
FIG. 2 is a front view of a tank area in the energy storage power generation device provided by the present invention;
fig. 3 is a top view of a water tank area in the energy storage power generation device provided by the invention.
Reference numerals illustrate:
1. A generator;
2. An energy storage and release mechanism; 21. a screw rod; 22. a water tank; 221. a housing; 222. a water inlet; 23. a water pump; 24. a threaded connection;
3. a guide member; 31. a guide rail; 32. a circumferential rotation member; 33. a cutting sleeve;
4. wave energy power generation mechanism.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Wave energy belongs to one of the most extensive ocean energy sources, the sea area of China is wide, coastal cities are developed in economy and large in electricity consumption, and the development and utilization of the wave energy are an indispensable part of the development and utilization of clean energy sources of China.
Conventional wave power generation systems utilize a cylindrical or spherical float to follow wave motion to generate electricity, and when a surge comes, the float moves up and down once. However, the surge movement is uneven, so that the fluctuation of the wave on the water surface is not large in many cases, and the generation of the generator is uneven easily.
That is, the wave energy has the problems of unstable output voltage, large power fluctuation, and the like, and therefore, the gravity energy storage and the buoyancy energy storage are combined with the existing wave energy power generation in the application.
Referring to fig. 1 to 3, fig. 1 is a simplified diagram illustrating an energy storage power generation device according to an embodiment of the present application; FIG. 2 illustrates a front view of a tank area in an energy storage power generation device provided by an embodiment of the present application; fig. 3 shows a top view of a water tank area in an energy storage power generation device according to an embodiment of the present application.
Embodiments of the present invention are described below with reference to fig. 1 to 3.
According to an embodiment of the present invention, in one aspect, there is provided an energy storage power generation device including a power generator 1 and an energy storage and release mechanism 2 as shown in fig. 1 to 3. The energy storage and release mechanism 2 drives the rotating end of the generator 1 to rotate in the energy storage and release process, so that power generation is realized.
Specifically, the energy storage and release mechanism 2 comprises a screw rod 21, a water tank 22 and a water pump 23, wherein the screw rod 21 is used for converting rotary motion into linear motion in the vertical direction, the screw rod 21 is vertically arranged in the ocean, the water tank 22 is in threaded connection with the screw rod 21, the water tank 22 comprises a shell 221, a water storage cavity is arranged in the shell 221, a water inlet 222 communicated with the water storage cavity is formed in the shell 221, an opening and closing structure is arranged at the water inlet 222 and used for controlling the water inlet 222 to be switched between an open state and a closed state, and the water pump 23 is used for conveying accumulated water in the water storage cavity into the ocean; wherein the rotating end of the generator 1 is in transmission connection with the screw 21.
By using the energy storage power generation device of the embodiment, when the water inlet 222 on the shell 221 of the water tank 22 is opened, seawater can enter the water storage cavity of the shell 221 until the water tank 22 gradually descends after the gravity of the water tank 22 is greater than the buoyancy of the water tank 22, and the screw rod 21 is vertically arranged in the ocean and is in threaded connection with the screw rod 21 by using the water tank 22, so that the screw rod 21 can be driven to rotate in the descending process of the water tank 22, and the rotating end of the generator 1 is driven to rotate, thereby realizing power generation. In the application, the combination of gravity energy storage, buoyancy energy storage and wave energy power generation can be realized, stable electric energy output is provided in the unstable wave energy power generation process, and the energy storage power generation device can stably supply power under different wave conditions.
It should be noted that, in the present application, the opening and closing structure is preferably an opening and closing valve.
It can be stated that in the present application, the electric energy generated by the generator 1 is incorporated into the electric network for powering the user.
As shown in fig. 1 to 3, the energy storage power generation device further comprises a guide member 3 and a circumferential rotating member 32, wherein the guide member 3 is installed in the ocean, at least one guide sliding rail 31 is arranged in the guide member 3, and the guide direction of the guide sliding rail 31 is vertical; the water tank 22 is positioned inside the guide slide rail 31, and at least one outer side wall surface of the water tank 22 is in sliding connection with the guide slide rail 31 through the circumferential rotating member 32; wherein the circumferential rotation member 32 is rotatably mounted to the water tank 22.
By using the energy storage power generation device of the embodiment, the guide piece 3 is provided, specifically, the guide slide rail 31 is provided in the guide piece 3, and the circumferential rotation piece 32 slidably connected with the guide slide rail 31 is provided on the outer wall surface of the water tank 22, so that the water tank 22 can move along the guide direction of the guide slide rail 31, the friction degree is reduced in the moving process, and the water tank 22 can move stably.
In the present embodiment, the number of guide rails 31 in the same guide 3 is not particularly limited.
As one embodiment, the guide rail 31 is provided with two or more, and the two or more guide rails 31 are arranged in groups and are arranged opposite to each other; at this time, the circumferential rotating members 32 are disposed in one-to-one correspondence with the guide rails 31.
Preferably, the circumferential rotation member 32 is selected to be a rotation member that rotates circumferentially about an axis, such as a roller.
As shown in fig. 1, a clamping sleeve 33 is arranged at the bottom of the guide sliding rail 31, and the clamping sleeve 33 is used for limiting and clamping the water tank 22.
By using the energy storage power generation device of the embodiment, the clamping sleeve 33 is arranged at the bottom of the guide sliding rail 31, so that the water tank 22 can be clamped when the water tank 22 moves to the position of the clamping sleeve 33, and the phenomena of forward movement, reverse movement and the like of the water tank 22 are avoided.
In the present embodiment, the form of screwing the water tank 22 to the screw 21 is not particularly limited.
As one embodiment, as shown in fig. 2 and 3, the housing 221 is provided with a screw coupling 24 provided through the top and bottom thereof, the screw coupling 24 being screw-coupled with the screw 21; the screw 21 penetrates through the casing 221, so that the water tank 22 can move smoothly.
Further, in the present application, the screw connection member 24 is centrally provided, so that the movement process of the water tank 22 can be made more stable.
Preferably, the threaded connection 24 is selected as a nut.
It should be noted that, the housing 221 is further provided with a water outlet communicated with the water storage chamber; the water pump 23 is installed in the water tank 22, the water inlet end of the water pump 23 extends to the bottom of the water storage chamber, and the water outlet end of the water pump 23 extends to the water outlet.
By utilizing the energy storage power generation device of the embodiment, in the process of pumping the seawater stored in the water storage cavity by the water pump 23, the water inlet end of the water pump 23 is extended to the bottom of the water storage cavity, so that the phenomenon that the water pump 23 cannot pump the seawater is avoided, the water pump 23 can stably pump the seawater, and the seawater pumped by the water pump 23 can be discharged to the ocean by extending the water outlet end of the water pump 23 to the water outlet.
In order to improve the stable power supply capacity of the energy storage power generation device, in the application, at least two energy storage and release mechanisms 2 are arranged on the power generator 1 and the energy storage and release mechanisms 2, and the at least two energy storage and release mechanisms 2 are arranged side by side in the horizontal direction; wherein, in two adjacent energy storing and releasing mechanisms 2, one water tank 22 is arranged at the top of the screw 21, and the other water tank 22 is arranged at the bottom of the screw 21.
By using the energy storage power generation device of the embodiment, at least two energy storage and release mechanisms 2 are arranged side by side in the horizontal direction, the water tanks 22 of the adjacent two energy storage and release mechanisms 2 are respectively arranged at the top and the bottom of the lead screw 21, the water tanks 22 in the at least two energy storage and release mechanisms 2 are alternately arranged, so that the adjacent two water tanks 22 move along opposite directions in the vertical direction to realize cooperative work, the fluctuation and the intermittence of waves can be balanced, the energy storage power generation device can always provide stable electric energy output, and when the wave energy is insufficient, the energy storage and release mechanisms 2 release energy simultaneously so as to maintain the stability of a power grid.
Preferably, as shown in fig. 1, both the generator 1 and the energy storage and release mechanism 2 are provided.
It may be noted that the energy storage power generation device further includes a wave power generation mechanism 4, the wave power generation mechanism 4 is located above the sea level, and the wave power generation mechanism 4 is electrically connected to the water pump 23.
By using the energy storage power generation device of the embodiment, the wave energy power generation mechanism 4 is additionally arranged, and the electric energy generated by the wave energy power generation mechanism 4 can be supplied to the water pump 23 by utilizing waves. Since the wave power mechanism 4 itself is constructed in a conventional arrangement, no further description is given here.
It may be noted that in the above embodiment, the vertical direction is the vertical direction shown in fig. 1, and is also the height direction.
The energy storage power generation device can realize continuous output of wave power generation; secondly, the arrangement is flexible, namely, the wave energy generator 1 can be provided with at least one energy storage and release mechanism 2 according to requirements; thirdly, the energy storage power generation device can fully utilize gravity and buoyancy, namely, not only gravity energy storage is utilized, but also buoyancy energy storage is combined with gravity energy storage, so that the power generation efficiency is improved; in addition, the energy storage power generation device uses the principle of gravity energy storage/buoyancy energy storage, is physical energy storage, and has the advantages of high efficiency, long service life, no pollution and marine pollution prevention.
According to an embodiment of the present invention, in another aspect, there is also provided a method for using an energy storage power generation device, which is applied to the energy storage power generation device in the previous aspect.
The number of the energy storage and release mechanisms 2 used in the present application method is not particularly limited. May be one, two or more.
In the use process, each energy storage and release mechanism 2 is provided with an energy storage stage and an energy release stage.
Specifically, when the water tank 22 of any energy storage and release mechanism 2 is located at the bottom of the lead screw 21, the water tank 22 is fixed through the clamping sleeve 33, at the moment, the water inlet 222 of the water tank 22 is closed, the water pump 23 in the water tank 22 is driven by the wave energy power generation mechanism 4 to discharge water in the water tank 22, the weight of the water tank 22 is reduced, the buoyancy is increased, and the water pump 23 is used for discharging water, namely, the energy storage process.
Of course, in any energy storage and release mechanism 2, the clamping sleeve 33 for fixing the water tank 22 is released, the water tank 22 floats upwards under the action of buoyancy, the screw nut on the water tank 22 drives the screw rod 21 to rotate in the floating process, the screw rod 21 drives the generator 1 to generate electricity, when the water tank 22 reaches the top end of the screw rod 21, the water inlet 222 is opened, the water tank 22 descends under the action of gravity, and when the water tank 22 sinks to the bottom end of the screw rod 21, the energy release is finished.
In order to improve the overall efficiency of the wave energy power generation system, the energy storage power generation device comprises at least two energy storage and release mechanisms 2, and two adjacent energy storage and release mechanisms 2 comprise a first energy storage and release mechanism 2 and a second energy storage and release mechanism 2.
Preferably, when one of the two water tanks 22 is positioned at the top of the lead screw 21, the other water tank 22 is positioned at the bottom of the lead screw 21. The water tanks 22 in the adjacent two energy storage and release mechanisms 2 move in opposite directions.
Further, only the methods of using the first energy storage and release mechanism 2 and the second energy storage and release mechanism 2 will be exemplarily described.
Specifically, the method for using the energy storage power generation device comprises the following steps: step S1: when the first energy storage and release mechanism 2 is positioned at the top of the lead screw 21 where the first energy storage and release mechanism is positioned, a water inlet 222 of a water tank 22 in the first energy storage and release mechanism 2 is opened, seawater enters a water storage cavity of the first energy storage and release mechanism, the water tank 22 in the first energy storage and release mechanism 2 descends to drive the lead screw 21 where the first energy storage and release mechanism is positioned to rotate, the water inlet 222 of the water tank 22 in the second energy storage and release mechanism 2 is closed, a water pump 23 is started to transmit the seawater in the water storage cavity of the first energy storage and release mechanism to the ocean, and the water tank 22 in the second energy storage and release mechanism 2 ascends to drive the lead screw 21 where the second energy storage and release mechanism is positioned to rotate; step S2: when the second energy storage and release mechanism 2 is positioned at the top of the lead screw 21 where the second energy storage and release mechanism 2 is positioned, a water inlet 222 of a water tank 22 in the second energy storage and release mechanism 2 is opened, seawater enters a water storage cavity of the second energy storage and release mechanism, the water tank 22 in the second energy storage and release mechanism 2 descends to drive the lead screw 21 where the second energy storage and release mechanism is positioned to rotate, the water inlet 222 of the water tank 22 in the first energy storage and release mechanism 2 is closed, a water pump 23 is started to transmit the seawater in the water storage cavity of the second energy storage and release mechanism to the ocean, and the water tank 22 in the first energy storage and release mechanism 2 ascends to drive the lead screw 21 where the second energy storage and release mechanism is positioned to rotate; step S3: and repeating the step S1 and the step S2 until the energy storage and the power generation are completed.
By using the using method of the energy storage power generation device of the embodiment, the overall efficiency of the wave energy power generation system can be remarkably improved by reasonably configuring at least two energy storage and release mechanisms 2. On one hand, the energy storage device can stabilize the fluctuation of wave energy power generation and realize the storage of wave energy electric energy; on the other hand, the intelligent control system can optimize the energy storage and release processes, and further improve the energy utilization efficiency.
It may be noted that when the water tank 22 in any energy storage and release mechanism 2 moves to the bottom of the screw 21, the water tank 22 is clamped by the clamping sleeve 33, so as to limit the water tank 22 to move in the vertical direction, and the clamping sleeve 33 where the water tank 22 in the other energy storage and release mechanism 2 is located is opened, so that the water tank 22 moves in the vertical direction.
It may be noted that in the above embodiment, in the process of lowering the water tank 22 in one energy storage and release mechanism 2, the lead screw 21 is driven to rotate, and then the generator 1 is driven to generate electricity, at this time, the generated electricity can be used for draining the water pump 23 in the adjacent energy storage and release mechanism 2, that is, when one water tank 22 is lowered, the adjacent water tank 22 can be raised, so that stable output of wave energy power generation can be circularly realized.
It should be noted that during the above-mentioned use, the movement of the water tank 22 should include an energy storage stage and an energy release stage.
Specifically, when one of the water tanks 22 moves to the bottom of the lead screw 21, the water inlet 222 is closed, water discharge is started, the weight of the water tank 22 is gradually reduced, the buoyancy is gradually increased until a certain volume of seawater is emptied or discharged as required, the water tank 22 is clamped by the clamping sleeve 33 in the whole process, and the water discharge process of the water pump 23 can be regarded as an energy storage stage.
After a certain volume of seawater is discharged or the water tank 22 is completely emptied, the buoyancy of the water tank 22 is greater than the gravity of the water tank 22, the clamping sleeve 33 is opened, the fixation is released, the water tank 22 floats upwards under the action of the buoyancy, the screw rod is driven by the threaded connecting piece 24 on the water tank 22 to rotate in the floating process, the generator 1 is driven by the screw rod to generate electricity, the water inlet 222 is opened when the water tank 22 reaches the top end of the screw rod, the water tank 22 descends under the action of the gravity, and the energy releasing stage is finished when the water tank 22 sinks to the bottom end of the screw rod.
Through setting up a plurality of energy storage and release mechanism 2, when user side electric power demand is less, each energy storage and release mechanism 2 is fixed in the lead screw bottom through cutting ferrule 33 to discharge the water in the water tank through the water pump, when user side electric power demand is great, the cutting ferrule 33 of fixed each energy storage and release mechanism 2 is released fixedly in proper order, the water tank floats at first under buoyancy effect, drives generator 1 electricity generation, the water inlet is opened when water tank 22 reaches the lead screw top, water tank 22 is submerged under the action of gravity, continuously drives generator 1 electricity generation, can realize scale, long-period electric power storage and release.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (10)
1. An energy storage power generation device, comprising:
A generator (1);
The energy storage and release mechanism (2), the energy storage and release mechanism (2) comprises a screw rod (21), a water tank (22) and a water pump (23), the screw rod (21) is used for converting rotary motion into linear motion in the vertical direction, the screw rod (21) is vertically arranged in the ocean, the water tank (22) is in threaded connection with the screw rod (21), the water tank (22) comprises a shell (221), a water storage cavity is arranged in the shell (221), a water inlet (222) communicated with the water storage cavity is formed in the shell (221), an opening and closing structure is arranged at the water inlet (222) and used for controlling the water inlet (222) to be switched and arranged between an opening state and a closing state, and the water pump (23) is used for conveying accumulated water in the water storage cavity into the ocean;
Wherein the rotating end of the generator (1) is in transmission connection with the screw rod (21).
2. The energy storage and power generation device according to claim 1, wherein,
The energy storage power generation device further comprises a guide piece (3) and a circumferential rotating piece (32), wherein the guide piece (3) is installed in the ocean, at least one guide sliding rail (31) is arranged in the guide piece (3), and the guide direction of the guide sliding rail (31) is a vertical direction;
The water tank (22) is positioned inside the guide sliding rail (31), and at least one outer side wall surface of the water tank (22) is in sliding connection with the guide sliding rail (31) through a circumferential rotating piece (32);
Wherein the circumferential rotating member (32) is rotatably mounted to the water tank (22).
3. The energy storage and power generation device according to claim 2, wherein,
The guide sliding rails (31) are provided with two or more than two, and the two or more than two guide sliding rails (31) are arranged in groups and are arranged oppositely;
The circumferential rotating pieces (32) are arranged in one-to-one correspondence with the guide sliding rails (31).
4. The energy storage and power generation device according to claim 2, wherein,
The bottom of the guide sliding rail (31) is provided with a clamping sleeve (33), and the clamping sleeve (33) is used for limiting and clamping the water tank (22).
5. The energy storage and power generation device according to any one of claims 1 to 4, wherein,
The shell (221) is provided with a threaded connecting piece (24) which penetrates through the top and the bottom of the shell, and the threaded connecting piece (24) is in threaded connection with the screw rod (21);
Wherein the screw rod (21) penetrates through the shell (221).
6. The energy storage and power generation device according to any one of claims 1 to 4, wherein,
The shell (221) is also provided with a water outlet communicated with the water storage cavity;
The water pump (23) is arranged in the water tank (22), the water inlet end of the water pump (23) extends to the bottom of the water storage cavity, and the water outlet end of the water pump (23) extends to the water outlet.
7. The energy storage and power generation device according to any one of claims 1 to 4, wherein,
The power generator (1) and the energy storage and release mechanisms (2) are provided with at least two, and the at least two energy storage and release mechanisms (2) are arranged side by side in the horizontal direction;
in the two adjacent energy storage and release mechanisms (2), a water tank (22) of one of the two mechanisms is arranged at the top of a screw (21) of the mechanism, and a water tank (22) of the other one of the two mechanisms is arranged at the bottom of the screw (21).
8. The energy storage power generation apparatus of any of claims 1-4, further comprising:
The wave energy power generation mechanism (4), wave energy power generation mechanism (4) are located the sea level top, wave energy power generation mechanism (4) are used for with water pump (23) electric connection.
9. A method of using an energy storage power generation device as claimed in any one of claims 1 to 8, wherein the energy storage power generation device comprises at least two energy storage and release mechanisms (2), two adjacent energy storage and release mechanisms (2) comprise a first energy storage and release mechanism (2) and a second energy storage and release mechanism (2), a water tank (22) of one of the two is located at the top of a lead screw (21) where the two is located, and a water tank (22) of the other of the two is located at the bottom of the lead screw (21) where the two is located, the method of using comprising:
Step S1: when the first energy storage and release mechanism (2) is positioned at the top of a lead screw (21) where the first energy storage and release mechanism is positioned, a water inlet (222) of a water tank (22) in the first energy storage and release mechanism (2) is opened, seawater enters a water storage cavity of the first energy storage and release mechanism, the water tank (22) in the first energy storage and release mechanism (2) descends to drive the lead screw (21) where the first energy storage and release mechanism is positioned to rotate, the water inlet (222) of the water tank (22) in the second energy storage and release mechanism (2) is closed, a water pump (23) is started to transmit the seawater in the water storage cavity to the sea, and the water tank (22) in the second energy storage and release mechanism (2) ascends to drive the lead screw (21) where the second energy storage and release mechanism is positioned to rotate;
Step S2: when the second energy storage and release mechanism (2) is positioned at the top of the lead screw (21) where the second energy storage and release mechanism is positioned, a water inlet (222) of a water tank (22) in the second energy storage and release mechanism (2) is opened, seawater enters a water storage cavity of the second energy storage and release mechanism, the water tank (22) in the second energy storage and release mechanism (2) descends to drive the lead screw (21) where the second energy storage and release mechanism is positioned to rotate, the water inlet (222) of the water tank (22) in the first energy storage and release mechanism (2) is closed, a water pump (23) is started, seawater in the water storage cavity of the second energy storage and release mechanism is transmitted to sea, and the water tank (22) in the first energy storage and release mechanism (2) ascends to drive the lead screw (21) where the second energy storage and release mechanism is positioned to rotate;
step S3: and repeating the step S1 and the step S2 until the energy storage and the power generation are completed.
10. The method of using the energy storage power generation device according to claim 9, wherein,
When the water tank (22) in any energy storage and release mechanism (2) moves to the bottom of the screw rod (21), the water tank (22) is clamped by the clamping sleeve (33) so as to limit the water tank (22) to move along the vertical direction, and the clamping sleeve (33) where the water tank (22) in the other energy storage and release mechanism (2) is positioned is opened so that the water tank (22) moves along the vertical direction.
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