A solar energy coupled wave energy integrated seawater desalination device

Abstract

The present application relates to the technical field of seawater desalination, and specifically discloses a solar energy coupled wave energy integrated seawater desalination device, comprising: a solar energy component, a wave energy component and a device body; the solar energy component comprises: a seawater pool and a light concentrator; the seawater pool is used to store seawater; the light concentrator is arranged on the seawater pool, and is used to absorb solar energy to heat the seawater in the seawater pool; a piston cavity is arranged on the device body; the wave energy component comprises: a piston, a floating body and a freshwater pool; the piston is slidably arranged in the piston cavity, and the piston cavity is divided into a first cavity and a second cavity; the other end of the piston extends out of the piston cavity to connect the floating body; a first passage and a second passage are also arranged in the device body; the first passage connects the first cavity and the top of the seawater pool; the second passage connects the first cavity and the freshwater pool. In this scheme, the solar energy component can realize the coupled utilization of solar energy and wave energy with the wave energy component, improve the efficiency of fresh water generation and improve production stability.

Description

Technical Field

[0001] The present application relates to the technical field of seawater desalination, and in particular to a solar energy coupled wave energy integrated seawater desalination device. Background Art

[0002] As an open source incremental technology, seawater desalination can be used to alleviate the shortage of freshwater resources. At present, among many seawater desalination technologies, solar seawater desalination has become a solution that has attracted much attention. However, due to the low energy density of solar energy, solar seawater desalination equipment is often bulky and has low water production efficiency per unit area. In addition, due to the large volatility of solar energy, it is easily affected by natural phenomena such as climate and day and night changes, resulting in insufficient stability of water production efficiency and low water production benefits. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide a solar energy coupled wave energy integrated seawater desalination device to solve the problems of insufficient water production efficiency stability and low water production benefits of existing solar seawater desalination equipment.

[0004] In order to achieve the above technical objectives, the present application provides a solar energy coupled wave energy integrated seawater desalination device, comprising: a solar energy component, a wave energy component and a device body;

[0005] The solar energy assembly comprises: a seawater pool and a light concentrator;

[0006] The seawater pool is used to store seawater;

[0007] The concentrator is arranged on the seawater pool and is used to absorb solar energy to heat the seawater in the seawater pool;

[0008] The device body is provided with a piston chamber;

[0009] The wave energy assembly comprises: a piston, a floating body and a fresh water tank;

[0010] One end of the piston is slidably disposed in the piston cavity to divide the piston cavity into a first cavity and a second cavity;

[0011] The other end of the piston extends out of the piston cavity and connects to the float;

[0012] The buoy can be floated on the sea surface;

[0013] The device body is also provided with a first passage and a second passage;

[0014] The first passage is connected to the first cavity and the upper part of the seawater pool;

[0015] The second passage is connected to the first cavity and the fresh water tank.

[0016] Further, a first one-way valve is provided in the first passage;

[0017] The first one-way valve is used to limit the fluid in the first cavity from flowing toward the seawater pool.

[0018] Furthermore, a second one-way valve is provided in the second passage;

[0019] The second one-way valve is used to limit the fluid in the fresh water tank from flowing toward the first cavity.

[0020] Furthermore, the wave energy assembly further comprises: an elastic member;

[0021] The two ends of the elastic member are respectively connected to the piston and the piston chamber;

[0022] The elastic member is used to provide an elastic force for the piston to move downward.

[0023] Furthermore, the bottom of the freshwater pool extends downward to be located below the floating body.

[0024] Further, it also includes a fixing member;

[0025] The device body is arranged on the fixing member.

[0026] Further, it also includes: a water suction pipe;

[0027] Both ends of the water suction pipe are connected with the seawater and the seawater pool respectively.

[0028] Furthermore, a third one-way valve is provided in the water suction pipe;

[0029] The third one-way valve is used to restrict the fluid in the seawater pool from flowing toward the seawater.

[0030] Furthermore, it also includes: a vacuum water level control valve and an air floating piston;

[0031] The bottom end of the water suction pipe is connected to seawater;

[0032] The vacuum water level control valve comprises an intermediate cavity and a first port, a second port and a third port communicating with the intermediate cavity;

[0033] The first opening is connected to the top end of the water suction pipe;

[0034] The second port is connected to the seawater pool;

[0035] The third port is connected to the seawater pool;

[0036] The third opening is located above the second opening;

[0037] The air-floating piston is slidably disposed in the middle cavity along the vertical direction, and the middle cavity is divided into an air pressure cavity connected to the third port and a water pumping cavity connected to the second port and the first port;

[0038] When the water level in the seawater pool is lower than the third opening, the air pressure in the air pressure chamber decreases, driving the air floating piston to move upward so that the first opening is connected to the second opening;

[0039] When the water level in the seawater pool is higher than the third opening, the air pressure in the air pressure chamber increases so that the air floating piston moves downward to isolate the first opening and the second opening.

[0040] Further, it also includes: a power generation turbine and a first channel;

[0041] The first passage includes a first air port and a second air port;

[0042] The first air port is connected to the second cavity;

[0043] The power generation turbine is rotatably disposed at the second air port;

[0044] The first channel gradually contracts along the first air port toward the second air port.

[0045] Further, a second channel is included;

[0046] The second channel includes: a third air port and a fourth air port;

[0047] The third air port is connected to the external atmosphere;

[0048] The fourth air port is connected to the second air port;

[0049] The second channel gradually contracts along the third air port toward the fourth air port.

[0050] Further, an air chamber is formed between the float and the device body;

[0051] The volume of the air chamber changes with the rise and fall of the floating body;

[0052] The air chamber is communicated with the first channel.

[0053] It can be seen from the above technical scheme that the present application provides a solar energy coupled wave energy integrated seawater desalination device, comprising: a solar energy component, a wave energy component and a device body; the solar energy component comprises: a seawater pool and a concentrator; the seawater pool is used to store seawater; the concentrator is arranged on the seawater pool, and is used to absorb solar energy to heat the seawater in the seawater pool; a piston cavity is arranged on the device body; the wave energy component comprises: a piston, a floating body and a freshwater pool; one end of the piston can be slidably arranged in the piston cavity, dividing the piston cavity into a first cavity and a second cavity; the other end of the piston extends out of the piston cavity to connect to the floating body; the floating body can be floated on the sea surface; a first passage and a second passage are also arranged in the device body; the first passage connects the first cavity and the top of the seawater pool; the second passage connects the first cavity and the freshwater pool.

[0054] In this solution, the solar panel can heat the seawater in the seawater pool, causing the seawater in the seawater pool to evaporate and form water vapor; the float can drive the piston to move in the piston chamber following the ups and downs of the sea surface, thereby generating negative pressure in the first chamber and extracting the water vapor in the seawater pool into the freshwater pool, thereby realizing the coupled utilization of solar energy and wave energy, thereby improving the efficiency of fresh water production and improving the stability of the production process, and effectively solving the problems of insufficient water production efficiency and low water production benefits of existing solar seawater desalination equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0056] Figure 1 A schematic diagram of the overall structure of a solar energy coupled wave energy integrated seawater desalination device provided in an embodiment of the present application;

[0057] Figure 2 An enlarged view of the position of a vacuum water level control valve of a solar energy coupled wave energy integrated seawater desalination device provided in an embodiment of the present application;

[0058] Figure 3 An enlarged view of the position of a vacuum water level control valve of a solar energy coupled wave energy integrated seawater desalination device provided in another embodiment of the present application;

[0059] Figure 4 An enlarged view of the position of a power generation turbine of a solar energy coupled wave energy integrated seawater desalination device provided in an embodiment of the present application;

[0060] In the figure:

[0061] 10. Solar energy module, 11. Seawater pool; 12. Concentrator; 13. Seawater in the seawater pool;

[0062] 20. Wave energy component; 21. Piston; 22. Floating body; 23. Fresh water tank; 24. Fresh water; 25. Elastic member; 26. Air chamber;

[0063] 30. Device body; 31. Piston chamber; 32. First passage; 33. Second passage; 34. First one-way valve; 35. Second one-way valve; 311. First cavity; 312. Second cavity; 321. Air inlet;

[0064] 40, fixing member; 41, water suction pipe; 42, third one-way valve; 43, vacuum water level control valve; 44, air floating piston; 401, first port; 402, second port; 403, third port; 431, middle cavity; 432, air pressure cavity; 433, water pumping cavity; 434, air valve; 435, manual valve; 436, connecting pipe;

[0065] 50, power generation turbine; 51, first channel; 52, second channel; 511, first air port; 512, second air port; 521, third air port; 522, fourth air port;

[0066] 60. Sea water. DETAILED DESCRIPTION

[0067] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the specification of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection requested by the present application.

[0068] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application 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 therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0069] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0070] See also Figure 1 A solar energy coupled wave energy integrated seawater desalination device provided in an embodiment of the present application is characterized by comprising: a solar energy component 10, a wave energy component 20 and a device body 30.

[0071] The solar energy assembly 10 includes: a seawater pool 11 and a light concentrator 12. The seawater pool 11 is used to store seawater 60; in application, the seawater pool 11 can pump seawater 60 into the seawater pool 11 through a pumping device such as a water pump. The light concentrator 12 is arranged on the seawater pool 11 to absorb solar energy to heat the seawater 13 in the seawater pool; in application, the light concentrator 12 can be a conventional convex lens, a Fresnel lens, etc., specifically, it can heat the seawater 13 in the seawater pool.

[0072] The device body 30 is provided with a piston chamber 31. In application, the device body 30 can be arranged below the seawater pool 11.

[0073] The wave energy assembly 20 includes a piston 21, a floating body 22 and a freshwater tank 23. One end of the piston 21 is slidably disposed in the piston cavity 31, dividing the piston cavity 31 into a first cavity 311 and a second cavity 312. In this embodiment, the piston 21 is slidably disposed in the piston cavity 31 along the vertical direction; the first cavity 311 is located below the second cavity 312.

[0074] The other end of the piston 21 extends out of the piston chamber 31 to connect to the float 22; the float 22 can be floated on the surface of the sea water 60; so that when the sea surface of the sea water 60 rises and falls, the float 22 can be driven to rise and fall, and then the float 22 drives the piston 21 to reciprocate in the piston chamber 31 to change the volume of the first cavity 311 and the second cavity 312.

[0075] A first passage 32 and a second passage 33 are also provided in the device body 30 ; the first passage 32 connects the first cavity 311 with the upper part of the seawater pool 11 ; the second passage 33 connects the first cavity 311 with the freshwater pool 23 .

[0076] In this embodiment, in the process of floating to the wave crest on the sea surface of the seawater 60, the float 22 drives the piston 21 to move upward, so that the volume of the first cavity 311 increases and a negative pressure is generated, so that the water vapor generated by the evaporation of the seawater 13 in the seawater pool can be absorbed into the first passage 32 through the first passage 32, and then the water vapor enters the second passage 33 through the first cavity 311, and then enters the fresh water pool 23 to condense into fresh water 24.

[0077] When the sea surface of the seawater 60 sinks to the trough, the float 22 descends due to gravity, driving the piston 21 to move downward, so that the volume of the first cavity 311 decreases and pushes the water vapor in the first cavity 311 into the second passage 33 and the fresh water tank 23 to accelerate the circulation of the water vapor.

[0078] In the above-mentioned process of sea surface fluctuation, since the seawater 13 in the seawater pool is continuously evaporated, and the water vapor entering the freshwater pool 23 is condensed, the pressure in the freshwater pool 23 is less than the pressure in the seawater pool 11. In order to ensure that the reciprocating motion of the piston 21 can continuously extract the water vapor in the seawater pool 11 into the first cavity 311, a first one-way valve 34 can be set on the first passage 32. The first one-way valve 34 is used to limit the fluid in the first cavity 311 from flowing toward the seawater pool 11. Therefore, when the piston 21 drives the volume of the first cavity 311 to increase, the water vapor in the seawater pool 11 will enter the first cavity 311 through the first one-way valve 34; when the piston 21 drives the volume of the first cavity 311 to decrease, the gas in the first cavity 311 cannot pass through the first one-way valve 34 and can only enter the freshwater pool 23 through the second passage 33. Through the solar energy coupled wave energy integrated seawater desalination device provided in this embodiment, the solar energy accelerates the evaporation of seawater and the wave energy extracts water vapor for continuous desalination, thereby improving the water production efficiency. At the same time, through the cooperation of the wave energy component 20 and the solar energy component 10, it can be applied to more different weather environments, achieving the effect of improving the stability of operation.

[0079] By providing the first one-way valve 34 , the piston 21 can also continuously extract water vapor from the seawater pool 11 , so that the seawater pool 11 maintains a negative pressure state and facilitates the evaporation of seawater.

[0080] It should be noted that, in the present embodiment, the air inlet 321 of the first passage 32 extends above the seawater 13 in the seawater pool to prevent the seawater 13 in the seawater pool from flowing back.

[0081] Optionally, a second one-way valve 35 is disposed in the second passage 33 ; the second one-way valve 35 is used to limit the fluid in the fresh water tank 23 from flowing toward the first cavity 311 .

[0082] The first one-way valve 34 allows the fluid in the first passage 32 to flow only in the direction of flowing into the first cavity 311; the second one-way valve 35 allows the fluid in the second passage 33 to flow only in the direction of flowing into the fresh water pool 23. The first one-way valve 34 and the second one-way valve 35 can prevent the water vapor from flowing back, ensuring the extraction effect of extracting the water vapor into the fresh water pool 23 during the reciprocating motion of the piston 21.

[0083] As an improvement, an elastic member 25 can be provided on the piston 21; the elastic member 25 can be a spring, and its two ends are respectively connected to the piston 21 and the cavity wall of the piston cavity 31; the elastic member 25 is used to convert the mechanical energy during the reciprocating motion of the piston 21 into elastic potential energy, so that when the float 22 rises, it can drive the piston 21 upward faster, and when the float 22 sinks, it can drive the piston 21 downward faster; and the elastic member 25 can provide the reciprocating motion of the piston 21 with elastic force to drive the piston 21 to move downward, ensuring that when the sea surface sinks, the float 22 can move downward.

[0084] In actual application, the bottom of the fresh water pool 23 extends downward to below the float 22, so that the fresh water pool 23 is fully or partially submerged in the sea water 60, so that the fresh water pool 23 can be cooled by the sea water 60 to enhance the condensation effect of water vapor.

[0085] In one embodiment, a fixing member 40 is further included; the device body 30 is disposed on the fixing member 40 .

[0086] The fixing member 40 may be a mountain, a ship hull, or a lighthouse, etc. The fixing member 40 can provide support for the device body 30 to improve the stability of the movement of the floating body 22.

[0087] In another embodiment, it further comprises: a water suction pipe 41; the water suction pipe 41 can be arranged on the fixing member 40. Both ends of the water suction pipe 41 are connected to the seawater 60 and the seawater pool 11 respectively.

[0088] One end of the water suction pipe 41 extends below the sea surface of the seawater 60, and the other end is connected to the seawater pool 11, and is used to extract the seawater 60 into the seawater pool 11. The water suction pipe 41 may be provided with a water pump or other water pumping device.

[0089] Optionally, a third one-way valve 42 is provided in the water suction pipe 41; the third one-way valve 42 is used to restrict the fluid in the seawater pool 11 from flowing toward the seawater.

[0090] That is, the third one-way valve 42 can prevent the seawater 13 in the seawater pool from flowing back into the seawater 60 .

[0091] For more specific examples, see Figure 1 and Figure 2The seawater desalination device provided in this embodiment also includes: a vacuum water level control valve 43 and an air floating piston 44; the bottom end of the water suction pipe 41 is connected to the seawater 60; the vacuum water level control valve 43 includes an intermediate cavity 431 and a first port 401, a second port 402 and a third port 403 connected to the intermediate cavity 431; the first port 401 is connected to the top of the water suction pipe 41; the second port 402 is connected to the seawater pool 11; the third port 403 is connected to the seawater pool 11; the third port 403 is located above the second port 402.

[0092] The air-floating piston 44 is slidably disposed in the middle cavity 431 along the vertical direction, and the middle cavity 431 is divided into an air pressure cavity 432 connected to the third port 403 and a water pumping cavity 433 connected to the second port 402 and the first port 401; when the water level in the seawater pool 11 is lower than the third port 403, the air pressure in the air pressure cavity 432 decreases, driving the air-floating piston 44 to move upward so that the first port 401 is connected to the second port 402; when the water level in the seawater pool 11 is higher than the third port 403, the air pressure in the air pressure cavity 432 increases, causing the air-floating piston 44 to move downward, thereby isolating the first port 401 from the second port 402.

[0093] In this embodiment, the first opening 401 is located below the air-floating piston 44 . When the air pressure chamber 432 is under normal pressure, the air-floating piston 44 covers the first opening 401 and separates the first opening 401 from the second opening 402 .

[0094] When the water level in the seawater pool 11 is lower than the third port 403, with the decrease in the amount of seawater and water vapor, and due to the existence of the first one-way valve 34, the pressure in the air pressure chamber 432 above the air floating piston 44 will be reduced; when the pressure in the air pressure chamber 432 is reduced to a certain level, the air floating piston 44 will be sucked up and move upward, so that the first port 401 and the second port 402 are connected, and then the seawater 60 can enter the seawater pool 11 through the suction pipe 41, the first port 401 and the second port 402.

[0095] When the water level in the seawater pool 11 is higher than the third opening 403 , the seawater closes the third opening 403 , and the air pressure chamber 432 is not affected by the low air pressure inside the seawater pool 11 and returns to normal pressure, and then the air floating piston 44 falls to separate the first opening 401 and the second opening 402 .

[0096] Through the cooperation of the water suction pipe 41, the vacuum water level control valve 43 and the air floating piston 44, when the water level in the seawater pool 11 drops to a certain level, the seawater can be automatically replenished to a suitable water level, specifically, the water level in the seawater pool 11 is replenished to a height higher than the third port 403. At the same time, during the process from the water level being lower than the third port 403 to the seawater replenishment, the seawater pool 11 will be in a low pressure state, which is conducive to the evaporation of seawater.

[0097] In one embodiment, see Figure 3 The air pressure chamber 432 may be always located above the third port 403 to prevent seawater from flowing back into the air pressure chamber 432 from the third port 403; a one-way valve may also be provided in the air pressure chamber 432 to prevent fluid backflow.

[0098] In this solution, an air valve 434 may be connected above the air pressure chamber 432; the air valve 434 can control whether the water replenishment function of the vacuum water level control valve 43 is turned on; after the air valve 434 is turned on, the external gas can enter the air pressure chamber 432, so that the air pressure chamber 432 maintains a normal pressure and cannot drive the air floating piston 44 to move. After the air valve 434 is closed, the air pressure of the air pressure chamber 432 will decrease as the water vapor in the seawater pool 11 evaporates.

[0099] In one embodiment, a manual valve 435 may be provided between the water suction pipe 41 and the second port 402 ; the connection between the water suction pipe 41 and the second port 402 may be manually controlled by the manual valve 435 , thereby realizing manual control of water replenishment.

[0100] Specifically, the water suction pipe 41 and the second port 402 are connected via a connecting pipe 436 ; the manual valve 435 is disposed on the connecting pipe 436 .

[0101] As an implementation method, as the seawater is desalinated in the device for a period of time, the salt content of the seawater in the seawater pool 11 will reach a relatively high level due to the continuous evaporation and replenishment. Concentrated seawater with a high salt content is not conducive to evaporation and is prone to scaling, so the concentrated seawater needs to be discharged. When the concentrated seawater needs to be discharged, first open the air valve 434 to restore the pressure in the seawater pool 11 and the gas chamber 432 to normal pressure. The gas chamber 432 returns to normal pressure to cause the air floating piston 44 to fall, isolating the first port 401 from the second port 402. Then open the manual valve 435, and under the action of gravity, the concentrated seawater will naturally flow into the sea through the connecting pipe 436 and the drain pipe 41. Figure 1 As shown, the third one-way valve 42 may be disposed between the connecting pipe 436 and the first port 401 to prevent the third one-way valve 42 from hindering the discharge of concentrated seawater.

[0102] In other embodiments, it also includes: a power generation turbine 50 and a first channel 51; the first channel 51 includes a first air port 511 and a second air port 512; the first air port 511 is connected to the second cavity 312; the power generation turbine 50 is rotatably disposed at the second air port 512; the first channel 51 gradually shrinks along the first air port 511 toward the second air port 512.

[0103] Furthermore, it also includes a second channel 52; the second channel 52 includes: a third air port 521 and a fourth air port 522; the third air port 521 is connected to the external atmosphere; the fourth air port 522 is connected to the second air port 512; the second channel 52 gradually shrinks from the third air port 521 to the fourth air port 522.

[0104] During the reciprocating motion of the piston 21 , the volume of the second cavity 312 will change, thereby driving the airflow to flow in the first channel 51 and the second channel 52 and driving the power generation turbine 50 to rotate and generate electricity.

[0105] The power generation turbine 50 can be arranged between the second air port 512 and the fourth air port 522. Since the first channel 51 and the second channel 52 are both tapered air channels, the gas can be accelerated to increase the rotational power of the power generation turbine 50 driven by the gas, thereby improving the power generation effect.

[0106] In an improved embodiment, an air chamber 26 may be provided between the floating body 22 and the device body 30. In this embodiment, the air chamber 26 is surrounded by the device body 30, the floating body 22, the fresh water pool 23 and the fixing member 40.

[0107] The volume of the air chamber 26 also changes during the rise and fall of the floating body 22 relative to the device body 30. Therefore, in this embodiment, the air chamber 26 is connected to the first channel 51, so that the rise and fall of the floating body 22 can also drive the air flow and drive the power generation turbine 50 to rotate, thereby further improving the power generation effect.

[0108] It should be noted that, in this embodiment, the first channel 51 and the second channel 52 can be enclosed by the seawater pool 11 and the device body 30 .

[0109] The above are only preferred embodiments of the present application and are not intended to limit the present invention. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions recorded in the aforementioned examples or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A solar energy coupled wave energy integrated seawater desalination device, characterized in that: include: A solar energy component (10), a wave energy component (20) and a device body (30); The solar energy assembly (10) comprises: a seawater pool (11) and a light concentrator (12); The seawater pool (11) is used to store seawater; The light concentrator (12) is arranged on the seawater pool (11) and is used to absorb solar energy to heat the seawater in the seawater pool (11); The device body (30) is provided with a piston chamber (31); The wave energy assembly (20) comprises: a piston (21), a floating body (22) and a fresh water tank (23); One end of the piston (21) is slidably disposed in the piston cavity (31) along a vertical direction, so as to divide the piston cavity (31) into a first cavity (311) and a second cavity (312); The other end of the piston (21) extends out of the piston chamber (31) and is connected to the outside of the float (22); The floating body (22) can be floated on the sea surface; A first passage (32) and a second passage (33) are also provided in the device body (30); The first passage (32) is in communication with the first cavity (311) and the upper portion of the seawater pool (11); The second passage (33) is in communication with the first cavity (311) and the fresh water pool (23); A first one-way valve (34) is provided in the first passage (32); The first one-way valve (34) is used to limit the flow of fluid in the first cavity (311) toward the seawater pool (11); A second one-way valve (35) is provided in the second passage (33); The second one-way valve (35) is used to limit the flow of fluid in the fresh water tank (23) toward the first cavity (311).

2. The solar energy coupled wave energy integrated seawater desalination device according to claim 1, characterized in that: The wave energy component (20) further comprises: an elastic member (25); Two ends of the elastic member (25) are respectively connected to the piston (21) and the piston chamber (31); The elastic member (25) is used to provide the piston (21) with an elastic force for moving downward.

3. The solar energy coupled wave energy integrated seawater desalination device according to claim 1, characterized in that: The bottom of the freshwater pool (23) extends downward to be located below the floating body (22).

4. The solar energy coupled wave energy integrated seawater desalination device according to claim 1, characterized in that: Also includes a fixing member (40); The device body (30) is arranged on the fixing member (40).

5. The solar energy coupled wave energy integrated seawater desalination device according to claim 1, characterized in that: Also includes: Suction pipe (41); Both ends of the water suction pipe (41) are connected to the seawater and the seawater pool (11) respectively.

6. The solar energy coupled wave energy integrated seawater desalination device according to claim 5, characterized in that: A third one-way valve (42) is provided in the water suction pipe (41); The third one-way valve (42) is used to restrict the fluid in the seawater pool (11) from flowing in the direction of the seawater.

7. The solar energy coupled wave energy integrated seawater desalination device according to claim 6, characterized in that: Also includes: A vacuum water level control valve (43) and an air floating piston (44); The bottom end of the water suction pipe (41) is connected to seawater (60); The vacuum water level control valve (43) comprises an intermediate cavity (431) and a first port (401), a second port (402) and a third port (403) which are in communication with the intermediate cavity (431); The first opening (401) is connected to the top end of the water suction pipe (41); The second opening (402) is connected to the seawater pool (11); The third opening (403) is connected to the seawater pool (11); The third opening (403) is located above the second opening (402); The air-floating piston (44) is slidably disposed in the middle cavity (431) along the vertical direction, and the middle cavity (431) is divided into an air pressure cavity (432) connected to the third port (403) and a water pumping cavity (433) connected to the second port (402) and the first port (401); When the water level in the seawater pool (11) is lower than the third opening (403), the air pressure in the air pressure chamber (432) decreases, driving the air floating piston (44) to move upward so that the first opening (401) is connected to the second opening (402); When the water level in the seawater pool (11) is higher than the third opening (403), the air pressure in the air pressure chamber (432) increases, causing the air floating piston (44) to move downward, thereby isolating the first opening (401) and the second opening (402).

8. The solar energy coupled wave energy integrated seawater desalination device according to claim 1, characterized in that: Also includes: A power generation turbine (50) and a first passage (51); The first channel (51) comprises a first air port (511) and a second air port (512); The first air port (511) is connected to the second cavity (312); The power generation turbine (50) is rotatably disposed at the second air port (512); The first channel (51) gradually contracts along the first air port (511) towards the second air port (512).

9. The solar energy coupled wave energy integrated seawater desalination device according to claim 8, characterized in that: Also included is a second channel (52); The second channel (52) comprises: a third air port (521) and a fourth air port (522); The third air port (521) is connected to the external atmosphere; The fourth air port (522) is connected to the second air port (512); The second channel (52) gradually contracts along the third air port (521) towards the fourth air port (522).

10. The solar energy coupled wave energy integrated seawater desalination device according to claim 8, characterized in that: An air chamber (26) is formed between the float (22) and the device body (30); The volume of the air chamber (26) changes following the rise and fall of the floating body (22); The air chamber (26) is in communication with the first channel (51).

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