CN217002129U

CN217002129U - Sea wave power generation device

Info

Publication number: CN217002129U
Application number: CN202220502947.2U
Authority: CN
Inventors: 于光远
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-07-19
Anticipated expiration: 2032-03-07

Abstract

The utility model discloses a sea wave power generation device, which comprises at least one power generation unit, wherein the power generation unit comprises a machine body; a floating box; a water tank having a drain pipe; the generator set is arranged on the drain pipe; the water pump is provided with a rotating shaft and a plurality of blades, the blades are arranged at intervals around the rotating shaft, each blade is provided with a near end and a far end, and the width of the near end is smaller than that of the far end; both sides of the blade are provided with inward-concave stressed cambered surfaces so that the water pump has a forward rotation state and a reverse rotation state. Clearance between two adjacent blades is crescent from distal end to near-end to rivers via the guide of atress cambered surface to pivot center department flows, and then improves the water storage of water pump, and when the water pump rotated, there was partial water to be reserved between two adjacent blades, thereby when the water pump switches the direction of rotation, guaranteed to have water in the water pump all the time, made the water pump keep good working property, avoided during the air admission water pump, influence the water pump and normally work.

Description

Sea wave power generation device

Technical Field

The utility model belongs to the technical field of wave power generation, and particularly relates to a wave power generation device.

Background

The power generation by utilizing the energy of wave fluctuation is a common power generation mode.

The wave power generation device generally includes a float and an energy conversion mechanism, and the wave pushes the float to float, so that the float is converted into mechanical energy of a generator through the energy conversion mechanism, and power generation is realized.

Generally, the sea wave power generation device is also provided with a water pumping device, namely, a floater drives the water pumping device to pump seawater, and the seawater is utilized to generate power. The common water pumping device comprises a wheel type water pump, a piston water pump and the like, when the water pump works, water is required to be always contained in the water pump, otherwise, the water pump can pump air into the water pump, and the water pumping efficiency is influenced.

Because the float can frequently fluctuate under the sea wave promotion, and then can drive the water pump and switch the direction of motion frequently, when the water pump moves (if rotate, translation etc.) towards a certain direction, can extract the sea water, and when the water pump reverse motion, then can form reverse suction power to in inhaling the water pump with the air in the pipeline easily, influence work efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sea wave power generation device, which aims to solve the problem that air easily enters a water pump when the water pump moves reversely.

The technical scheme adopted by the utility model is as follows:

a wave power plant comprises at least one power generation unit, wherein the power generation unit comprises a machine body; the floating box can float up and down relative to the machine body under the buoyancy action of seawater; the water tank is provided with a drain pipe, the drain pipe is provided with a water inlet end and a drain end, and the position of the water inlet end is higher than that of the drain end; the generator set is arranged on the drain pipe; the water pump is provided with a rotating shaft and a plurality of blades, the blades are arranged at intervals around the rotating shaft, the blades are provided with near ends close to the rotating shaft and far ends far away from the rotating shaft, and the width of the near ends is smaller than that of the far ends; the two sides of the blades in the rotation direction are provided with inwards-sunken stress cambered surfaces, so that the water pump is driven by the floating box to have a forward rotation state and a reverse rotation state.

The drain pipe includes first drain pipe and second drain pipe, first drain pipe with the second drain pipe all is provided with generating set, first drain pipe set up in the bottom of water tank, the second drain pipe set up in the third department of water tank height, still be provided with level sensor in the water tank, when level sensor triggers, first drain pipe with the second drain pipe all switches on, when level sensor disconnection triggered, first drain pipe switches on, the second drain pipe seals.

The sea wave power generation device further comprises a water flow pipeline, the water flow pipeline comprises a forward rotation water path and a reverse rotation water path, the forward rotation water path and the reverse rotation water path are sequentially communicated with the sea, the water pump and the water tank, in the forward rotation state, seawater enters the water tank through the forward rotation water path, and in the reverse rotation state, seawater enters the water tank through the reverse rotation water path.

The water pump is provided with a forward rotation water inlet end and a reverse rotation water inlet end, the forward rotation water path comprises a first water pumping pipeline and a first water outlet pipeline, the first water pumping pipeline is communicated with the sea and the forward rotation water inlet end, the first water outlet pipeline is communicated with the reverse rotation water inlet end and the water tank, the reverse rotation water path comprises a second water pumping pipeline and a second water outlet pipeline, the second water pumping pipeline is communicated with the sea and the reverse rotation water inlet end, and the second water outlet pipeline is communicated with the forward rotation water inlet end and the water tank; the first water pumping pipeline, the first water outlet pipeline, the second water pumping pipeline and the second water outlet pipeline are all provided with a through/off valve, the forward rotation state is that the through/off valve arranged on the first water pumping pipeline is communicated with the through/off valve arranged on the first water outlet pipeline, and the reverse rotation state is that the through/off valve arranged on the second water pumping pipeline is communicated with the through/off valve arranged on the second water outlet pipeline.

The on-off valve arranged on the first water pumping pipeline and the on-off valve arranged on the second water pumping pipeline are both in one-way conduction from the sea to the water pump direction, and the on-off valve arranged on the first water outlet pipeline and the on-off valve arranged on the second water outlet pipeline are both in one-way conduction from the water pump to the water tank direction; the through-stop valves can be automatically opened and closed under the action of water pressure.

First water pumping pipeline first outlet conduit the second water pumping pipeline and the second outlet conduit has the installation cavity, the lead-to-no valve set up in the installation cavity, the lead-to-no valve includes mount, elastic component and shutoff piece, the shutoff piece passes through the elastic component connect in the mount, the shutoff piece can for the mount removes, so that the lead-to-no valve has the shutoff piece supports the top the closed condition of the inner wall of installation cavity, and the shutoff piece with the on-state that the inner wall of installation cavity breaks away from.

The bottom of the floating box is provided with a floating plane and water diversion inclined planes, and the water diversion inclined planes are positioned on two sides of the floating plane.

The floating box is internally provided with a containing cavity, and the bottom of the floating box is provided with a water inlet valve and a water drainage valve.

One of the machine body and the floating box is provided with a rack extending along the vertical direction, the other of the machine body and the floating box is provided with a gear matched with the rack, the gear is matched with the rack so as to limit the movement of the floating box in the vertical direction, and the gear drives the blades to rotate.

The wave power generation device comprises a plurality of power generation units, the power generation units are arranged in parallel, and the water tanks of the power generation units are communicated with one another.

Due to the adoption of the technical scheme, the utility model has the beneficial effects that:

1. the width of the near end of each blade of the water pump is small, so that on one hand, the gap between every two adjacent blades is increased, the water pumping quantity of the water pump is increased, more seawater can be stored between every two adjacent blades, and the water pumping efficiency is improved. On the other hand, the gap between two adjacent blades gradually increases from the distal end to the proximal end, so that the water flow flows to the center of the rotating shaft under the guidance of the stressed cambered surface, the water storage capacity of the water pump is further improved, when the water pump works normally, water is required to be always kept in the water pump, otherwise, the water pump can suck air into the water pump to influence the water pumping efficiency, because the floating box can frequently float up and down under the push of sea waves, the water pump is driven to frequently switch between the forward rotation state and the reverse rotation state, when the water pump rotates, partial water is retained between two adjacent blades, therefore, when the water pump switches the rotating direction, water is always kept in the water pump, the water pump keeps good working performance, and air is prevented from entering the water pump to influence the normal work of the water pump.

In addition, the water tank can be to the sea water of water pump extraction is collected, then utilizes the sea water in the water tank, continues steadily follow discharge in the drain pipe, utilizes the kinetic energy of difference in height increase sea water, and then drives generating set work electricity generation to this realization is continuously, is generated electricity steadily, improves generating efficiency and power generation quality, reduces the influence of environmental factor to the electricity generation, because the water tank can store certain sea water, when the stormy waves are great, can store a large amount of sea water in the water tank to as long as there is water in the water tank, can generate electricity, avoid in the calm weather environment of level and wave the problem that power generation facility generating efficiency is low or can't generate electricity.

2. As a preferred embodiment of the present invention, the drain pipe includes a first drain pipe and a second drain pipe, the first drain pipe and the second drain pipe are both provided with the generator set, the first drain pipe is disposed at the bottom of the water tank, the second drain pipe is disposed at a third of the height of the water tank, the water tank is further provided with a liquid level sensor therein, when the liquid level sensor is triggered, the first drain pipe and the second drain pipe are both conducted, when the liquid level sensor is triggered to be disconnected, the first drain pipe is conducted, and the second drain pipe is closed. When sea water in the water tank triggers the liquid level sensor, the liquid level sensor indicates that the liquid level height reaches a limit height, the second drain pipe is controlled to be communicated by the automatic control device, the first drain pipe and the second drain pipe drain together at the moment, the generator set arranged on the first drain pipe and the generator set arranged on the second drain pipe work together to generate electricity together. When the liquid level in the water tank drops to below the second drain pipe, the automatic control device controls the second drain pipe to be closed, and at the moment, only the first drain pipe is conducted, and the generator set arranged by the first drain pipe is utilized to generate electricity.

3. As a preferred embodiment of the present invention, the water pump has a forward rotation water inlet end and a reverse rotation water inlet end, the forward rotation water path includes a first water pumping pipeline and a first water outlet pipeline, the first water pumping pipeline communicates with the ocean and the forward rotation water inlet end, the first water outlet pipeline communicates with the reverse rotation water inlet end and the water tank, the reverse rotation water path includes a second water pumping pipeline and a second water outlet pipeline, the second water pumping pipeline communicates with the ocean and the reverse rotation water inlet end, and the second water outlet pipeline communicates with the forward rotation water inlet end and the water tank; the first water pumping pipeline, the first water outlet pipeline, the second water pumping pipeline and the second water outlet pipeline are all provided with a through valve. When the floating box floats upwards to drive the blades to rotate forwards, the water pump generates suction force at the forward rotation water inlet end to pump water, seawater enters the water pump through the first water pumping pipeline, the water pump discharges water at the reverse rotation water inlet end, and the seawater in the water pump enters the water tank through the first water outlet pipeline; when the floating box sinks to drive the blades to rotate reversely, the water pump generates suction force at the reverse rotation water inlet end to pump water, seawater enters the water pump through the second water pumping pipeline, the water pump discharges water at the forward rotation water inlet end, and the seawater in the water pump enters the water tank through the second water outlet pipeline. The setting of logical check valve has guaranteed the water pump with the correspondence of rivers pipeline operating condition has improved the reliability of work, has guaranteed that the sea water is in orderly flow in the rivers pipeline, has avoided certain pipeline to cause the interference to other pipelines to and avoid the turbulent flow.

4. As a preferred embodiment of the present invention, the first pumping line, the first water outlet line, the second pumping line, and the second water outlet line have an installation cavity, the open-close valve is disposed in the installation cavity, the open-close valve includes a fixing frame, an elastic member, and a blocking member, the blocking member is connected to the fixing frame through the elastic member, and the blocking member is capable of moving relative to the fixing frame, so that the open-close valve has a closed state in which the blocking member abuts against an inner wall of the installation cavity, and a communication state in which the blocking member is separated from the inner wall of the installation cavity. When the through-stop valve is pushed by water flow on one side of the plugging piece, the elastic piece is compressed, so that the plugging piece moves towards the fixing frame and further breaks away from the inner wall of the mounting cavity to conduct the pipeline, and when the water flow pushing force is smaller than the elastic force of the elastic piece, the plugging piece is pushed by the elastic piece to reset, and the plugging state is recovered. On the contrary, if the through/off valve is stressed on one side of the fixing frame, the through/off valve cannot be conducted due to the fixed position of the fixing frame. The one-way conduction and the automatic opening and closing of the through-stop valve are realized, the water flow is ensured to flow in the water flow pipeline along the preset water pumping direction all the time, and the seawater backflow is prevented. Moreover, labor force is saved, manual control of opening and closing of the through-stop valve is not needed, automation is improved, and use experience is improved.

5. As a preferred embodiment of the present invention, the floating box has a cavity therein, and a water inlet valve and a water discharge valve are disposed at the bottom of the floating box. When the weather condition is good, the drain valve is opened to discharge the seawater in the accommodating cavity, so that the floating box recovers the floating function.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural diagram of the power generation device according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the power generation unit shown in FIG. 1;

FIG. 3 is a front view of the power generation unit of FIG. 2;

FIG. 4 is a right side view of the hair-point unit of FIG. 2;

fig. 5 is a schematic structural diagram of the water flow pipeline of the power generation unit according to an embodiment of the present invention, wherein the forward rotation water path is in a conducting state;

FIG. 6 is a schematic diagram of the water flow line of the power generation unit according to an embodiment of the present invention, wherein the reverse waterway is in a conducting state;

FIG. 7 is an enlarged view of area A of FIG. 5;

FIG. 8 is a schematic view of the power generation unit according to another embodiment of the present invention;

FIG. 9 is an enlarged view of area B of FIG. 8;

figure 10 is a cross-sectional view of the float tank and the lower retainer in one embodiment of the utility model.

Wherein:

1 a power generation unit;

2, a machine body; 21 a support column; 22 gears; 221 fixing a gear; 222 drive a gear; a position-limiting section at 23; a lower limit portion of 24; 25 limiting the opening;

3, floating the box; 31 a rack; 32 a floating plane; 33 water diversion inclined plane; 34 a cavity;

4, a water tank; 41 a drain pipe; 411 water inlet end; 412 a drain end;

5, a water pump; 51 blades; 511 stress cambered surface; 52 a rotating shaft; 53 positively rotating the water inlet end; 54 inverting the water inlet end;

6, a generator set; 61 a first-stage generator; 62 a secondary generator;

7 a positive rotation waterway; 71 a first water pumping pipeline; 72 a first outlet conduit; 73 mounting a cavity; 731 an elastic fitting part;

8, reversing the waterway; 81 a second water pumping pipeline; 82 a second outlet conduit;

9, a through stop valve; 91 a fixing frame; 92 an elastic member; 93 a closure.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it is to be understood that the terms "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description herein, references to the terms "implementation," "embodiment," "one embodiment," "example" or "specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1 to 10, a wave power generating device includes at least one power generating unit 1, the power generating unit 1 includes a body 2; the floating box 3 can float up and down relative to the machine body 2 under the buoyancy action of seawater; a water tank 4, wherein the water tank 4 is provided with a drain pipe 41, the drain pipe 41 is provided with a water inlet end 411 and a water outlet end 412, and the water inlet end 411 is positioned at a higher height than the water outlet end 412; the generator set 6, the said generator set 6 is set up in the said drain pipe 41; the water pump 5 is provided with a rotating shaft 52 and a plurality of blades 51, the blades 51 are arranged at intervals around the rotating shaft 52, the blades 51 are provided with a near end close to the rotating shaft 52 and a far end far away from the rotating shaft 52, and the width of the near end is smaller than that of the far end; the blades 51 are provided with inward-recessed stress arc surfaces 511 on both sides in the rotation direction thereof, so that the water pump 5 is driven by the floating box 3 to have a forward rotation state and a reverse rotation state.

Specifically, as shown in fig. 5 to 6, the blade 51 has a fan shape.

The width of the near end of each blade 51 is small, so that on one hand, the gap between every two adjacent blades 51 is increased, the water pumping quantity of the water pump 5 is increased, more seawater can be stored between every two adjacent blades 51, and the water pumping efficiency is improved. On the other hand, the gap between two adjacent blades 51 is gradually increased from the far end to the near end, so that water flows to the center of the rotating shaft 52 through the guiding of the stressed arc 511, thereby improving the water storage capacity of the water pump 5, when the water pump 5 normally works, water is required to be ensured to be always in the water pump 5, otherwise the water pump 5 sucks air into the water pump 5, which affects the water pumping efficiency, because the floating box 3 is frequently floated up and down under the pushing of sea waves, thereby driving the water pump 5 to frequently switch between the forward rotation state and the reverse rotation state, when the water pump 5 rotates, part of water is retained between two adjacent blades 51, so when the water pump 5 switches the rotation direction, water is ensured to be always in the water pump 5, so that the water pump 5 keeps good working performance, and air is prevented from entering the water pump 5, affecting the normal operation of the water pump 5.

In addition, the water tank 4 can collect the seawater pumped by the water pump 5, then the seawater in the water tank 4 is utilized to continuously and stably discharge from the drain pipe 41, the kinetic energy of the seawater is increased by utilizing the height difference, and the generator set 6 is driven to work and generate electricity, so that the continuous and stable electricity generation is realized, the electricity generation efficiency and the electricity generation quality are improved, and the influence of environmental factors on the electricity generation is reduced.

In use, the bottom of the power generation unit 1 is fixed to the sea floor so that a part of the power generation unit 1 is located below the sea level and a part of the power generation unit 1 is located above the sea level, and preferably, the power generation unit 1 has a lower stopper 24 for restricting the lowest position of the float tank 3, and the lower stopper 24 is flush with the sea level.

It should be noted that, in the present invention, the number of the power generation units 1 is not specifically limited, and in a preferred embodiment, as shown in fig. 1, the wave power generation device includes a plurality of power generation units 1 (two power generation units 1 are shown in fig. 1, and other numbers are also possible), the power generation units 1 are arranged in parallel, and the water tanks 4 of the power generation units 1 are communicated with each other.

The water pump 5 of each power generation unit 1 pumps seawater into the water tank 4, stores the seawater in the water tank 4 in a concentrated manner, and generates power continuously and uninterruptedly by using a stable water flow in the water tank 4. The water storage capacity is improved, more seawater is stored, and the seawater stored in the water tank 4 is conveniently used for power generation in the calm environment.

The arrangement mode of the power generation units 1 is not particularly limited, and the power generation units 1 can be combined arbitrarily according to the environment conditions of the installed water area, for example, in the water area with large wind power and severe environment, the power generation units 1 are arranged in parallel at intervals to reduce wind resistance, relieve the lateral thrust applied to the power generation device and prevent the power generation device from tipping. In a water area with small wind power, the power generation units 1 can be arranged in parallel and closely adjacent to each other, so that the structural integrity is improved, and the assembly and disassembly are convenient.

The water tank 4 can collect the seawater pumped by the water pump 5, then the seawater in the water tank 4 is used for continuously and stably discharging the seawater from the drain pipe 41, the potential energy of the seawater is increased by using the height difference, and the generator set 6 is driven to work and generate electricity, so that the continuous and stable electricity generation is realized, the electricity generation efficiency and the electricity generation quality are improved, and the influence of environmental factors on the electricity generation are reduced.

The number of the blades 51 is not limited in the present invention, and may be 4 blades as shown in fig. 5 to 6, or may be set to other numbers according to actual use requirements.

In a preferred embodiment, drain pipe 41 includes first drain pipe and second drain pipe, just first drain pipe with the second drain pipe all is provided with generating set 6, first drain pipe set up in the bottom of water tank 4, the second drain pipe set up in the third department of water tank 4 height, still be provided with level sensor in the water tank 4, work as sea water in the water tank 4 triggers during level sensor, it reaches spacing height to show the liquid level, usable automatic control device control this moment the second drain pipe switches on, this moment first drain pipe with the common drainage of second drain pipe, set up in first drain pipe generating set 6 with set up in the second drain pipe generating set 6 all works, generates electricity jointly. When the liquid level in the water tank 4 is lowered below the second drain pipe, the automatic control device controls the second drain pipe to be closed, only the first drain pipe is conducted at the moment, and the generator set 6 arranged on the first drain pipe is utilized to generate electricity.

Preferably, as shown in fig. 1 to 4, the generator set 6 includes a first-stage generator 61 and a second-stage generator 62 arranged in sequence from top to bottom, so that when the water flow is discharged from the water discharge pipe 41, the water flow passes through the first-stage generator 61 and the second-stage generator 62 in sequence, and power generation is performed twice, so as to maximize the energy of the water, improve the conversion rate of electric energy, and further improve the stability of power generation.

As shown in fig. 5 and 6, the wave power generation device further includes a water flow pipeline, the water flow pipeline includes a forward rotation water path 7 and a reverse rotation water path 8, the forward rotation water path 7 and the reverse rotation water path 8 are both sequentially communicated with the sea, the water pump 5 and the water tank 4, the sea water enters the water tank 4 through the forward rotation water path 7 in the forward rotation state, and the sea water enters the water tank 4 through the reverse rotation water path 8 in the reverse rotation state.

The blades of the existing water pump 5 are generally provided with an arc surface on one side and a back arc surface on the other side, so that the blades can only be pushed by water flow on one side of the arc surface to rotate, the blades 51 of the water pump 5 are structurally improved, the stress arc surfaces 511 are arranged on two sides of the blades, the blades 51 can bear force on two sides, and the blades 51 can rotate in two directions and respectively correspond to the floating process and the sinking process of the floating box 3, for example, when the floating box 3 floats upwards, the water pump 5 is in the forward rotation state, and when the floating box 3 sinks, the water pump 5 is in the reverse rotation state. The sea wave power generation device is provided with two water paths for communicating the sea, the water pump 5 and the water tank 4, when the water pump 5 rotates forwards, the forward rotation water path 7 is conducted, the water pump 5 pumps seawater to enter the water tank 4 through the forward rotation water path 7, when the water pump 5 rotates backwards, the reverse rotation water path 8 is conducted, and the water pump 5 pumps seawater to enter the water tank 4 through the reverse rotation water path 8. With this realization water pump 5 is in the two-way homoenergetic of 3 motions of floating box can one-wayly draw water from the ocean, and two water routes alternative switch on, and when one of them water route switched on, another water route was sealed to during operation mutual noninterference has guaranteed that the rivers route is orderly reliable, avoids the turbulent flow, has improved greatly water pump 5's work efficiency has improved the utilization ratio to the wave energy, and then has improved the continuation and the generating quality of electricity generation.

Further, as shown in fig. 5 to 6, the water pump 5 has a forward rotation water inlet end 53 and a reverse rotation water inlet end 54, the forward rotation water circuit 7 includes a first water pumping pipeline 71 and a first water outlet pipeline 72, the first water pumping pipeline 71 communicates the sea with the forward rotation water inlet end 53, the first water outlet pipeline 72 communicates the reverse rotation water inlet end 54 with the water tank 4, the reverse rotation water circuit 8 includes a second water pumping pipeline 81 and a second water outlet pipeline 82, the second water pumping pipeline 81 communicates the sea with the reverse rotation water inlet end 54, and the second water outlet pipeline 82 communicates the forward rotation water inlet end 53 with the water tank 4; the first water suction pipe 71, the first water outlet pipe 72, the second water suction pipe 81, and the second water outlet pipe 82 are all provided with an on-off valve 9, the on-off valve 9 provided in the first water suction pipe 71 and the on-off valve 9 provided in the first water outlet pipe 72 are turned on in the forward rotation state, and the on-off valve 9 provided in the second water suction pipe 81 and the on-off valve 9 provided in the second water outlet pipe 82 are turned on in the reverse rotation state.

For example, as shown in fig. 5, the left side is the forward rotation water inlet end 53 of the water pump 5, the right side is the reverse rotation water inlet end 54 of the water pump 5, the vane 51 is rotated counterclockwise to the normal rotation state, rotated clockwise to the reverse rotation state, when the floating box 3 floats upwards to drive the blades 51 to rotate forwards (anticlockwise rotation in fig. 5), at this time, the first water pumping pipeline 71 and the through valve 9 on the first water outlet pipeline 72 are communicated, the water pump 5 generates a suction force at the forward rotation water inlet end 53 (left side in fig. 5) to pump water, seawater enters the water pump 5 from the forward rotation water inlet end 53 (left side in fig. 5) through the first water pumping pipeline 71, at this time, the water pump 5 discharges water at the reverse rotation water inlet end 54 (right side in fig. 5), and seawater in the water pump 5 enters the water tank 4 through the first water outlet pipeline 72;

similarly, as shown in fig. 6, when the floating box 3 sinks to drive the blade 51 to rotate reversely (clockwise rotation in fig. 6), the second water pumping pipe 81 and the open/close valve 9 of the second water outlet pipe 82 are connected, the water pump 5 generates suction force at the reverse water inlet end 54 (right side in fig. 6) to pump water, seawater enters the water pump 5 through the second water pumping pipe 81, the water pump 5 discharges water at the normal water inlet end 53 (left side in fig. 6), and seawater in the water pump 5 enters the water tank 4 through the second water outlet pipe 82. The setting of logical check valve 9 has guaranteed water pump 5 with the correspondence of rivers pipeline operating condition has improved the reliability of work, has guaranteed that the sea water is in orderly flow in the rivers pipeline, has avoided certain pipeline to cause the interference to other pipelines to and avoid the turbulent flow.

In the present embodiment, the type of the open/close valve 9 is not particularly limited as long as the open/close of the open/close valve 9 can be realized corresponding to the water path, and for example, the open/close valve 9 may be an electromagnetic valve whose open/close is electrically controlled. In a preferred embodiment, as shown in fig. 5 to 6, the open/close valve 9 provided in the first pumping line 71 and the open/close valve 9 provided in the second pumping line 81 are both configured to be in one-way communication from the sea toward the water pump 5, and the open/close valve 9 provided in the first water outlet line 72 and the open/close valve 9 provided in the second water outlet line 82 are both configured to be in one-way communication from the water pump 5 toward the water tank 4; the through-stop valves 9 can be opened and closed automatically under the action of water pressure.

The check valve 9 is set to be of a one-way valve structure, so that water flow in each pipeline flows along a preset flow direction all the time, the situation that the water pump 5 reversely pumps water in the water tank 4 is avoided on the one hand, and on the other hand, the situation that the water flow flowing in two directions collides in the pipelines, so that turbulence is caused and normal water pumping operation is influenced is avoided.

In addition, one side of the open-close valve 9 is provided with a force bearing surface, so that when the side is subjected to the pushing force of water flow, the side can be pushed to be communicated, and when the pushing force of the water flow is smaller, the open-close valve 9 is reset to close a corresponding pipeline. When the other side of the through-stop valve 9 is stressed, the through-stop valve 9 cannot be conducted no matter how the water flow pushes the through-stop valve 9, so that one-way conduction is realized, the through-stop valve 9 automatically completes the switching between conduction and closed states under the action of water flow pushing, manual control is not needed, the automation of the power generation device is improved, the whole power generation process is automatically carried out, and the use experience is improved.

Specifically, as shown in fig. 5 to 7, the first water pumping pipe 71, the first water outlet pipe 72, the second water pumping pipe 81 and the second water outlet pipe 82 have a mounting cavity 73, the open-close valve 9 is disposed in the mounting cavity 73, the open-close valve 9 includes a fixing frame 91, an elastic member 92 and a blocking member 93, the blocking member 93 is connected to the fixing frame 91 through the elastic member 92, the blocking member 93 is movable relative to the fixing frame 91, so that the open-close valve 9 has a closed state where the blocking member 93 abuts against an inner wall of the mounting cavity 73, and a communicated state where the blocking member 93 is separated from the inner wall of the mounting cavity 73.

Preferably, as shown in fig. 7, the installation cavity 73 is provided at the water inlet thereof with an elastic fitting portion 731 fitted with the blocking piece 93, and the elastic fitting portion 731 abuts against the blocking piece 93 to completely seal the water inlet of the installation cavity 73.

Preferably, as shown in fig. 7, the force-bearing surface of the blocking piece 93 faces a preset water flow direction, so that the water flow can easily push the blocking piece 93 to move. When the plugging piece 93 is abutted against the inner wall of the installation cavity 73, the corresponding pipeline is plugged. The blocking piece 93 may be made of an elastic material, so that after the blocking piece abuts against the inner wall of the installation cavity 73, the blocking piece elastically deforms to block the corresponding pipeline, and the sealing effect is improved. Of course, the blocking member 93 may also be made of a hard material and provided with a layer of elastic sealing member on its stressed surface to achieve abutting sealing.

When the through-stop valve 9 is pushed by water flow on one side of the blocking piece 93, the elastic piece 92 is compressed, so that the blocking piece 93 moves towards the fixing frame 91 and further separates from the inner wall of the mounting cavity 73 to conduct the pipeline, and when the water flow pushing force is smaller than the elastic force of the elastic piece 92, the blocking piece 93 is pushed by the elastic piece 92 to reset, and the blocking state is recovered. On the other hand, if the opening/closing valve 9 is pressed against the fixing frame 91, the fixing frame 91 is fixed in position and cannot be opened. The one-way conduction and the automatic opening and closing of the through-stop valve 9 are realized, the water flow is ensured to flow in the water flow pipeline along the preset water pumping direction all the time, and the seawater backflow is prevented. Moreover, labor force is saved, the opening and closing of the through-stop valve 9 are not required to be controlled manually, the automation is improved, and the use experience is improved.

The present invention is not limited to a specific transmission manner between the floating box 3 and the water pump 5, and in a preferred embodiment, as shown in fig. 2, 3 and 8, one of the machine body 2 and the floating box 3 is provided with a rack 31 extending in a vertical direction, the other of the machine body 2 and the floating box 3 is provided with a gear 22 engaged with the rack 31, the gear 22 is engaged with the rack 31 to limit the movement of the floating box 3 in the vertical direction, and the gear 22 drives the blades 51 to rotate.

The rack 31 and the gear 22 are matched to guide the floating box 3, so that the floating box 3 always moves in the vertical direction, the movement reliability and the power generation efficiency are improved, and meanwhile, the gear 22 and the rack 31 have large transmission force in transmission, and the transmission efficiency is ensured.

Preferably, as shown in fig. 1 to 2, each floating box 3 is provided with four sets of gears 22 and racks 31 which are mutually matched, and each set of the gears 22 and the racks 31 is provided with one water pump 5.

In the present embodiment, the arrangement positions of the gear 22 and the rack 31 are not particularly limited, and may be one of the following embodiments:

example 1: in the present embodiment, as shown in fig. 8 to 9, the rack 31 is provided to the body 2, and the gear 22 is provided to the float tank 3.

In this embodiment, the gear 22 may drive the water pump 5 to rotate through a shaft rod capable of extending and retracting.

Preferably, as shown in fig. 8 to 9, the machine body 2 includes a plurality of support columns 21, the support columns 21 surround the floating box 3 at intervals, each support column 21 is provided with the rack 31, and the floating box 3 is correspondingly provided with a plurality of gears 22, so that a matching structure of the rack and the gear is formed in each circumferential region of the floating box 3, the guiding effect on the movement of the floating box 3 is improved, the movement of the floating box 3 is more stable, and the inclination is prevented.

Example 2: in the present embodiment, as shown in fig. 2 to 3, the rack 31 is disposed on the floating box 3, and the gear 22 is disposed on the machine body 2.

In this embodiment, the gear 22 is fixed to the body 2, so that the gear 2 only rotates around the axis and does not move relative to the body 2, the stability of the relative position between the gear 22 and the body 2 is improved, the gear 22 and the water pump 5 can be coaxially arranged, and the rotation of the gear 22 drives the water pump 5 to rotate.

Preferably, as shown in fig. 3, the machine body 2 is provided with a fixed gear 221 and a driving gear 222, the rack 31 is a double-sided rack, the fixed gear 221 and the driving gear 222 are respectively located on both sides of the rack 31 and are both engaged with the rack 31, and the fixed gear 221 and the driving gear 222 are both fixed in position relative to the machine body 2 and can only rotate.

The fixed gear 221 serves to guide the movement of the rack 31 and the floating box 3 and serves as a limit so that the rack 31 and the floating box move in the extension direction of the engaged teeth, and the driving gear 222 serves to drive the water pump 5 to rotate.

Further, as shown in fig. 2 to 3, the machine body 2 further includes a supporting column 21, an upper limiting portion 23, and a lower limiting portion 24, the upper limiting portion 23, the lower limiting portion 24, and the supporting column 21 together enclose a floating space for the floating box 3 to move, the floating box 3 is disposed in the floating space, the gear 22 or the rack 31 is disposed on the supporting column 21, and an accommodating channel is disposed inside the supporting column 21.

The support column 21, the upper limit portion 23 and the lower limit portion 24 together enclose the floating space, so as to limit the movement range of the floating box 3 in the floating space, and at the same time, the support column 21 also plays a role in supporting and guiding the floating box 3 to move, as shown in fig. 2, the water tank 4 is disposed at the top of the machine body 2, so as to raise the water tank 4, so that water flows down to drive the generator set 6 to run and generate power by using a height difference, and the support column 21 supports the water tank 4 to keep stable.

The supporting column 21 is internally provided with the accommodating channel, so that various pipelines can be conveniently arranged in the accommodating channel 21, the supporting column 21 can protect the pipelines, and the pipelines are prevented from being exposed to the outside and damaged to cause water leakage. Meanwhile, the arrangement of pipelines is optimized, and the structural compactness is improved.

Further, as shown in fig. 2 and 10, the lower retainer 24 is provided with a retainer opening 25, and when the floating box 3 contacts the lower retainer 24, a partial region of the floating box 3 is placed in the retainer opening 25.

The arrangement of the limit opening 25 facilitates seawater to flow from the limit opening 25 to the floating space, and pushes the floating box 3 from the bottom of the floating box 3, so that the floating box 3 floats by vertical upward thrust, and the floating box 3 is prevented from being subjected to larger horizontal thrust to shift the position of the floating box 3 or influence the normal transmission of a transmission structure. On the other hand, when the floating box 3 sinks to the bottom due to weather, the limit opening 25 can form a limit stop for the floating box 3, so that the position of the floating box 3 is more stable, and the floating box is prevented from falling off or being damaged due to larger transverse impact force of sea waves.

Preferably, as shown in fig. 10, the bottom surface of the floating box 3 has a floating plane 32 and water diversion slopes 33, the water diversion slopes 33 are located on both sides of the floating plane 32, so that the bottom surface of the floating box 3 is similar to a ship shape, which is more beneficial to the floating movement and the smoothness of the movement of the floating box 3, the water diversion slopes 33 guide part of the seawater to the outside, part of the seawater is in contact with the floating plane 32 and pushes the floating box 3 vertically upwards, and the seawater in contact with the water diversion slopes 33 also forms inward pushing forces on both sides of the floating box 3, thereby clamping the floating box 3 to float up and down in a stable posture and avoiding tipping. Meanwhile, the resistance of the floating box 3 to sea waves can be reduced, and the up-and-down floating efficiency of the floating box 3 is improved.

Further, as shown in fig. 10, the opening area of the limiting opening 25 is larger than the area of the floating plane 32 and smaller than the area of the projection of the floating plane 32 and the water diversion slope 33 on the horizontal plane, that is, the projection of the limiting opening 25 toward the floating box 3 covers the floating plane 32 and a part of the water diversion slope 33. So that when the floating box 3 sinks to the bottom, the floating box 3 does not completely pass through the limit opening 25, and only a partial area of the floating box 3 passes through the limit opening 25, so that the inner circumference of the limit opening 25 stops the floating box 3 to limit the floating box.

As a preferred embodiment of the present invention, as shown in fig. 10, the floating box 3 has a receiving cavity 34 therein, and a water inlet valve and a water discharge valve are provided at the bottom of the floating box 3.

When the weather is typhoon, the water inlet valve can be opened, so that the floating box 3 is filled with seawater and sinks below the sea level, the floating box 3 is prevented from being damaged due to typhoon attack, and when the weather condition is good, the water discharge valve is opened to discharge the seawater in the accommodating cavity 34, so that the floating function is recovered, the service life of the floating box 3 is prolonged, the capacity of the power generation device for dealing with complex weather environments is improved, and the applicability is improved.

The method can be realized by adopting or referring to the prior art in places which are not described in the utility model.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A wave power plant comprising at least one power generating unit, characterized in that the power generating unit comprises:

a body;

the floating box can float up and down relative to the machine body under the buoyancy action of seawater;

the water tank is provided with a drain pipe, the drain pipe is provided with a water inlet end and a drain end, and the position of the water inlet end is higher than that of the drain end;

the generator set is arranged on the drain pipe;

the water pump is provided with a rotating shaft and a plurality of blades, the blades are arranged at intervals around the rotating shaft, the blades are provided with near ends close to the rotating shaft and far ends far away from the rotating shaft, and the width of the near ends is smaller than that of the far ends; the two sides of the blades in the rotation direction are provided with inwards-sunken stress cambered surfaces, so that the water pump is driven by the floating box to have a forward rotation state and a reverse rotation state.

2. A wave power plant as set forth in claim 1, characterized in that,

3. A wave power plant as set forth in claim 1, characterized in that,

4. A wave power plant as set forth in claim 3,

the water pump is provided with a forward rotation water inlet end and a reverse rotation water inlet end, the forward rotation water path comprises a first water pumping pipeline and a first water outlet pipeline, the first water pumping pipeline is communicated with the sea and the forward rotation water inlet end, the first water outlet pipeline is communicated with the reverse rotation water inlet end and the water tank, the reverse rotation water path comprises a second water pumping pipeline and a second water outlet pipeline, the second water pumping pipeline is communicated with the sea and the reverse rotation water inlet end, and the second water outlet pipeline is communicated with the forward rotation water inlet end and the water tank;

the first water pumping pipeline, the first water outlet pipeline, the second water pumping pipeline and the second water outlet pipeline are all provided with a through/off valve, the forward rotation state is that the through/off valve arranged on the first water pumping pipeline is communicated with the through/off valve arranged on the first water outlet pipeline, and the reverse rotation state is that the through/off valve arranged on the second water pumping pipeline is communicated with the through/off valve arranged on the second water outlet pipeline.

5. A wave power plant as set forth in claim 4,

the on-off valve arranged on the first water pumping pipeline and the on-off valve arranged on the second water pumping pipeline are both in a structure of one-way conduction from the sea to the water pump direction, and the on-off valve arranged on the first water outlet pipeline and the on-off valve arranged on the second water outlet pipeline are both in a structure of one-way conduction from the water pump to the water tank direction; the through-stop valves can be automatically opened and closed under the action of water pressure.

6. A wave power plant as set forth in claim 5,

7. A wave power plant as set forth in claim 1,

8. A wave power plant as set forth in claim 7, characterized in that,

9. A wave power plant as set forth in claim 1,

10. A wave power plant as set forth in claim 1, characterized in that,

the wave power generation device comprises a plurality of power generation units, the power generation units are arranged in parallel, and the water tanks of the power generation units are communicated with each other.