CN118289872A - A wave energy desalination-high temperature thermal energy collection system based on microwave heating - Google Patents

Abstract

The present invention relates to the technical field of seawater desalination, and discloses a wave energy seawater desalination-high temperature heat energy collection system based on microwave heating, including a wave energy power generation system, including a buoy and a wave energy power generation element, the wave energy power generation element generates electricity through waves on the sea surface; a microwave heating system, including a microwave heating box, a seawater desalination element and a heat energy element, the seawater desalination element and the heat energy element are both arranged in the microwave heating box, the electric energy generated by the wave energy power generation element sequentially microwave heats the seawater desalination element and the heat energy element, and the water resources desalinated by the seawater desalination element are collected in a water storage tank; a collection component, including a plurality of collection tanks and a plurality of purge elements, the collection tanks and the purge elements are respectively arranged in the microwave heating box, and the purge elements are connected through the buoy, and are used to purge the salt generated when the seawater desalination element is desalinated into the collection tank. The present invention integrates the collection of fresh water, high temperature heat energy, electric energy and salt to meet the living and operation needs of the marine ranch.

Description

A wave energy desalination-high temperature thermal energy collection system based on microwave heating

Technical Field

The invention relates to the technical field of seawater desalination, and in particular to a wave energy seawater desalination-high temperature heat energy collection system based on microwave heating.

Background technique

Desalination of seawater is one of the important sources of freshwater demand for marine ranches at present. In the ocean ranches in the open sea, in order to meet the needs of living, fresh water, electricity, heat energy and food that can be stored for a long time are indispensable. Using clean energy at sea for power generation, desalination of seawater and its high-value utilization is one of the important ways for marine ranches to achieve self-sufficiency. At present, most of them use solar energy and wave energy for power generation and desalination of seawater. For example, the solar desalination device shown in CN106542598B gathers heat to achieve evaporation in the shortest time by irradiating solar energy on a microporous heat-collecting evaporation sheet, thereby improving the evaporation efficiency. For example, the all-weather solar desalination device shown in CN117185395B uses the irradiation evaporation of a long afterglow night light device when solar energy resources are insufficient at night, so that desalination of seawater can be carried out at night, thereby improving the efficiency of desalination of seawater.

In addition to desalination of seawater through the above-mentioned solar energy, desalination of seawater can also be carried out through wave energy. For example, the seawater wave energy desalination system shown in CN107246352B captures wave energy in all directions through two orthogonal float groups and uses a central float to suppress the wave energy fluctuation power, thereby improving the conversion efficiency of wave energy and improving the efficiency of seawater desalination. For example, the seawater desalination system based on wave energy shown in CN116903091B, by setting a pressure regulating component, only allows seawater with a pressure within a set range to flow into the seawater desalination device for seawater desalination, thereby achieving stable seawater desalination. In addition, "Studying different design parameters of a microwave preheating system in solar desalination" studied the effect of microwave radiation on heated water in solar seawater desalination. The study showed that the seawater heating rate increases with the increase of microwave power.

The above-mentioned seawater desalination system improves the efficiency of seawater desalination, but it also has the following problems:

(1) Solar desalination systems mainly rely on solar energy, but solar energy resources are unstable and are greatly affected by weather factors. Their power generation and desalination water production may not meet the requirements of self-sufficiency.

(2) Photovoltaic panels used for solar power generation are susceptible to erosion by sea breezes on offshore marine ranches. Due to their distance from the mainland, their maintenance time and cost are long.

(3) The existing wave energy power generation and seawater desalination systems simply play the role of generating electricity and desalinating seawater, and cannot achieve high-value utilization of wave energy, nor can they better meet the daily needs of marine ranches and improve the economic benefits of marine ranches.

(4) The simple combination of solar power generation system and microwave heating system is also susceptible to uncontrollable factors such as weather, and its reliability remains to be investigated. The investment and operating costs of this system are increased.

Therefore, there is an urgent need for a wave energy desalination-high temperature thermal energy collection system based on microwave heating to solve the above problems.

Summary of the invention

The purpose of the present invention is to provide a wave energy seawater desalination-high temperature thermal energy collection system based on microwave heating to solve the problems existing in the above-mentioned prior art.

To achieve the above object, the present invention provides the following solution: The present invention provides a wave energy seawater desalination-high temperature thermal energy collection system based on microwave heating, comprising:

A wave energy power generation system comprises a buoy and a wave energy power generation element, wherein the buoy is arranged on the sea surface, the wave energy power generation element is arranged inside the buoy and generates electricity through waves on the sea surface;

The microwave heating system comprises a microwave heating box, a seawater desalination unit and a thermal energy unit. The microwave heating box is electrically connected to the wave energy power generation unit through a power transmission line. The seawater desalination unit and the thermal energy unit are both arranged in the microwave heating box. The electric energy generated by the wave energy power generation unit sequentially performs microwave heating on the seawater desalination unit and the thermal energy unit. The water resources desalinated by the seawater desalination unit are collected in a water storage tank.

The collecting assembly comprises a collecting tank and a purging member, wherein the collecting tank and the purging member are respectively arranged in the microwave heating box, and the purging member is connected with the buoy to purge the salt generated by the seawater desalination member when desalinating seawater into the collecting tank.

Preferably, the wave energy power generation device includes an iron block and a spring, the iron block is connected to the top end of the buoy through the spring, a plurality of magnetic blocks are fixedly connected to the inner wall of the buoy along the circumferential direction, the iron block is located between the plurality of magnetic blocks, and the iron block generates electrical energy by cutting the magnetic flux lines of the magnetic blocks.

Preferably, the seawater desalination unit includes two seawater cavities arranged at both ends of the microwave heating box, seawater is arranged in the seawater cavities, the electric energy generated by the iron block and the magnetic block is used to perform microwave heating on the seawater in the seawater cavities, and the high-temperature water vapor generated after the seawater is heated is collected in the water storage tank.

Preferably, the thermal energy component includes an oil cavity arranged in the microwave heating box, the oil cavity is located between the two seawater cavities and is separated by a glass plate, heat transfer oil is arranged in the oil cavity, and the electric energy generated by the iron block and the magnetic block performs microwave heating on the heat transfer oil.

Preferably, the purge component includes two air inlet pipes arranged on the microwave heating box, one end of the two air inlet pipes respectively extends into the two seawater cavities and is located on a side close to the glass plate, the air inlet pipes are used to purge salt adhered to the glass plate, the top of the side wall of the buoy is connected to an exhaust pipe, and the other ends of the two air inlet pipes are respectively connected to the exhaust pipe.

Preferably, the microwave heating box is provided with two water inlets and two exhaust ports, the two water inlets and the two exhaust ports are respectively connected to the two seawater cavities, the water inlet is connected to the seawater through a water inlet pipe, the exhaust port is connected to the water storage tank through a pipeline, and the water inlet pipe is arranged in contact with the pipeline.

Preferably, a movable door and an oil drain port are respectively provided at the top and bottom of the microwave heating box, the movable door and the oil drain port are respectively connected to the oil cavity, and an insulation layer is fixedly connected to the inner wall of the oil cavity.

Preferably, a liquid level gauge is provided on the water storage tank.

Preferably, a temperature sensor is provided on the microwave heating box, and a detection end of the temperature sensor extends into the oil cavity.

Preferably, a battery is connected to the transmission wire.

Compared with the prior art, the present invention has the following advantages and technical effects:

The present invention provides a wave energy desalination-high temperature heat energy collection system based on microwave heating. The buoy is placed on the sea surface. The wave energy is converted into electrical energy by the wave energy power generation device. The converted electrical energy is transmitted to the microwave heating box. The seawater is first desalinated by the seawater desalination device to realize the collection of fresh water resources. After the collection is completed, the high temperature heat energy is collected and stored by the heat energy device for subsequent use. For the salt generated in the seawater desalination process, the salt is purged and collected into the collection tank by the purging device for subsequent use. The present invention combines wave energy power generation with a microwave heating system. Compared with solar energy, the supply of wave energy is not affected by day and night time and space, and the ocean wave energy resources are abundant, which can meet the self-power supply needs of the marine ranch platform. It integrates the collection of fresh water, high temperature heat energy, electricity and salt. Compared with traditional solar desalination, in addition to realizing the collection of fresh water and sea salt, high temperature heat energy can also be obtained, which can meet the living and operation needs of the marine ranch.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

Fig. 1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a schematic diagram of the structure of a collecting assembly of the present invention;

FIG3 is a schematic diagram of the internal structure of the oil chamber of the present invention;

FIG4 is a microwave heating flow chart of the present invention;

FIG5 is a flow chart of seawater desalination and heat energy collection according to the present invention;

Among them, 1. buoy; 2. microwave heating box; 3. transmission line; 4. water storage tank; 5. collecting tank; 6. iron block; 7. spring; 8. magnetic block; 9. glass plate; 10. oil chamber; 11. seawater chamber; 12. air intake pipe; 13. exhaust pipe; 14. water inlet; 15. exhaust port; 16. water inlet pipe; 17. pipeline; 18. movable door; 19. oil drain port; 20. insulation layer; 21. liquid level meter; 22. temperature sensor; 23. battery; 24. air intake pipe; 25. water pump; 26. microwave generator; 27. floating board.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

1 to 5 , the present invention provides a wave energy seawater desalination-high temperature heat energy collection system based on microwave heating, comprising:

The wave energy power generation system comprises a buoy 1 and a wave energy power generation device, wherein the buoy 1 is arranged on the sea surface, the wave energy power generation device is arranged inside the buoy 1, and generates electricity through waves on the sea surface;

The microwave heating system includes a microwave heating box 2, a seawater desalination unit and a thermal energy unit. The microwave heating box 2 is electrically connected to the wave energy power generation unit through a power transmission line 3. The seawater desalination unit and the thermal energy unit are both arranged in the microwave heating box 2. The electric energy generated by the wave energy power generation unit sequentially performs microwave heating on the seawater desalination unit and the thermal energy unit. The water resources desalinated by the seawater desalination unit are collected in a water storage tank 4.

The collecting assembly includes a collecting tank 5 and a purging member, which are respectively arranged in the microwave heating box 2 . The purging member is connected to the buoy 1 and is used to purge the salt generated by the desalination member when desalinating seawater into the collecting tank 5 .

According to a further optimization scheme, the wave energy power generation device includes an iron block 6 and a spring 7. The iron block 6 is connected to the top of the inner part of the buoy 1 through the spring 7. A plurality of magnetic blocks 8 are fixedly connected to the inner wall of the buoy 1 along the circumferential direction. The iron block 6 is located between the plurality of magnetic blocks 8. The iron block 6 generates electrical energy by cutting the magnetic flux lines of the magnetic blocks 8.

1 , the buoy 1 is located on the sea surface. The up and down movement of the waves enables the iron block 6 to move up and down to cut the magnetic flux lines generated by the magnetic block 8, and the cutting of the magnetic flux lines generates electrical energy to realize wave energy power generation.

A further optimized solution is that the seawater desalination unit includes two seawater chambers 11 arranged at both ends of the microwave heating box 2, and seawater is arranged in the seawater chambers 11. The electric energy generated by the iron block 6 and the magnetic block 8 is used to microwave heat the seawater in the seawater chamber 11, and the high-temperature water vapor generated after the seawater is heated is collected in the water storage tank 4.

Referring to Figure 1, seawater is arranged in the seawater cavity 11, and the electric energy generated by wave energy is transmitted to the microwave heating box 2, the electric energy will be converted into microwaves by the microwave converter and then sent to the seawater cavity 11 through the microwave transmitting antenna of the transmitting station to heat the seawater, and the heated seawater generates high-temperature steam which is transmitted to the water storage tank 4 to obtain fresh water resources, thereby realizing the desalination of seawater.

A further optimized solution is that the thermal energy component includes an oil chamber 10 arranged in the microwave heating box 2. The oil chamber 10 is located between the two seawater chambers 11 and is separated by a glass plate 9. Heat transfer oil is arranged in the oil chamber 10, and the electric energy generated by the iron block 6 and the magnetic block 8 is used to perform microwave heating on the heat transfer oil.

1 , 4 and 5 , seawater is desalinated by microwave heating to produce fresh water. After the fresh water is collected, the heat transfer oil in the oil chamber 10 is heated. The heated heat transfer oil has heat, which enables the collection of high-temperature thermal energy, making it easier to use the collected high-temperature thermal energy later.

A further optimized solution is that the purging component includes two air inlet pipes 12 arranged on the microwave heating box 2, one end of the two air inlet pipes 12 respectively extends into the two seawater cavities 11 and is located on the side close to the glass plate 9, the air inlet pipes 12 are used to purge the salt adhered to the glass plate 9, and the top of the side wall of the buoy 1 is connected to an exhaust pipe 13, and the other ends of the two air inlet pipes 12 are respectively connected to the exhaust pipe 13.

2 , due to the high salt content of seawater, a salt layer will adhere to one side of the glass plate 9 of the seawater chamber 11. When the wave energy power generation device is in operation, the iron block 6 will repeatedly move up and down to compress and gather high-pressure gas at the upper part. The high-pressure gas formed by the compression is transported to the seawater chamber 11 through the exhaust pipe 13 and the air intake pipe 12, and the salt layer attached to the glass plate 9 is blown off and collected in the collecting tank 5. The collected salt can be used to pickle various seafood.

To further optimize the solution, two water inlets 14 and two exhaust ports 15 are provided on the microwave heating box 2, and the two water inlets 14 and the two exhaust ports 15 are respectively connected to the two seawater cavities 11, the water inlet 14 is connected to the seawater through the water inlet pipe 16, and the exhaust port 15 is connected to the water storage tank 4 through the pipeline 17, and the water inlet pipe 16 is arranged in contact with the pipeline 17.

1 , the pipeline 17 is used to transport high-temperature steam. The pipeline 17 contacts the water inlet pipe 16 for heat exchange, and preheats the seawater in the water inlet pipe 16, thereby increasing the initial temperature of the seawater. The preheated high-temperature steam is then transported to the water storage tank 4 and converted into fresh water for daily use.

According to a further optimization scheme, a movable door 18 and an oil drain port 19 are respectively provided at the top and bottom of the microwave heating box 2. The movable door 18 and the oil drain port 19 are respectively connected to the oil cavity 10, and an insulation layer 20 is fixedly connected to the inner wall of the oil cavity 10.

Referring to FIG3 , after the temperature of the heat transfer oil reaches 300° C., it is kept warm. When necessary, this part of the heat can be used in daily life, such as cooking, by opening the movable door 18; the high-temperature oil can also be discharged through the oil outlet 19 for high-temperature sterilization. In addition, since the glass plate 9 between the water and the oil is also at a high temperature, the seawater entering later will evaporate into water vapor, which can also be sterilized by the method of extracting the high-temperature steam; the formed high-temperature water vapor continues to preheat the newly entering seawater to reduce the required heat energy consumption, and the water vapor that has used up the residual heat flows into the water storage tank 4 again, which can meet the needs of daily life.

To further optimize the solution, a liquid level meter 21 is provided on the water storage tank 4.

1 , the liquid level gauge 21 on the water storage tank 4 is used to monitor whether the amount of fresh water reaches the required level. When the amount of fresh water reaches the indicated liquid level, the heating of the seawater is stopped and the heat transfer oil is heated.

According to a further optimized solution, a temperature sensor 22 is provided on the microwave heating box 2 , and a detection end of the temperature sensor 22 extends into the oil cavity 10 .

3 , the temperature sensor 22 is used to detect the temperature of the heat transfer oil in the oil chamber 10 , and when the temperature of the heat transfer oil rises to 300° C., the heating of the heat transfer oil is stopped.

According to a further optimized solution, a storage battery 23 is connected to the transmission line 3 .

1 and 4 , when the heat transfer oil is heated to 300° C., the heating is stopped and the electricity generated by the wave energy is stored in the battery 23 for subsequent use.

The present invention provides a wave energy seawater desalination-high temperature heat energy collection system based on microwave heating. When in use, the wave energy power generation device transmits electricity to the microwave generator 26 through the transmission wire 3, and the microwave generator 26 generates microwaves for heating the medium in the microwave heating box 2; the gas enters the buoy 1 through the air inlet pipe 24, and the exhaust pipe 13 is in a closed state at this time. A one-way valve is arranged on the exhaust pipe 13, and a floating plate 27 is fixedly connected to the bottom end of the iron block 6 in the buoy 1, and the outer wall of the floating plate 27 is in sliding contact with the inner wall of the buoy 1. Due to the up and down vibration of the waves, the upper space is squeezed upward to compress and increase the pressure of the gas in the upper space. When the pressure of the compressed gas reaches the resistance of the one-way valve, it will be discharged, and the high-pressure gas will be transported to the seawater cavity 11 through the exhaust pipe 13. Through the purging effect of the high-pressure gas, the salt layer attached to the glass plate 9 will fall into the collection tank 5, and the high-pressure gas will finally be discharged through the exhaust port 15. The air inlet pipe 12 and the exhaust port 15 are both provided with a one-way valve to prevent the backflow of the gas. In the seawater cavity 11, the seawater in the space is pumped by the water inlet pipe 16 through the water pump 25. The seawater is heated by microwaves and evaporates to form water vapor, and then the water vapor and high-pressure gas are mixed and discharged through the exhaust port 15. Since the mixed gas still has residual heat to be recycled, the water inlet temperature is increased and energy consumption is reduced by heat exchange with the water inlet pipe 16. After heat exchange, the water vapor will condense to form fresh water, which enters the water storage tank 4 for storage to meet the daily fresh water demand. When the amount of fresh water in the water storage tank 4 reaches the specified position, the water inlet pipe 16 will be closed and will no longer heat the seawater cavity 11 to heat the heat-conducting oil in the inner oil cavity 10. The heat-conducting oil is heated by microwave radiation. The temperature sensor 22 in the space is used to monitor the temperature. When it reaches 300°C, the heating stops. The electric energy generated by the wave energy power generation device will stop being transmitted to the microwave generator 26, and will be transmitted to the battery 23 through the transmission line 3 to store electric energy. The stored electric energy can be supplied to the water pump 25 to provide electric energy on the one hand, and can also meet the electric energy demand on the marine ranch on the other hand. The edge of the oil cavity 10 has an insulation space composed of an insulation layer 20, which can keep the temperature of the heat-conducting oil at the required high temperature. A movable door 18 is set in the space. When daily life needs to carry out activities that consume heat, the movable door 18 can be opened to release heat. There is also an oil discharge port 19 under the space. When high-temperature oil is needed for sterilization, the oil discharge port 19 can be opened to discharge the high-temperature oil.

In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims (10)

1. A wave energy seawater desalination-high temperature heat energy collection system based on microwave heating, characterized by comprising: A wave energy power generation system comprises a buoy (1) and a wave energy power generation element, wherein the buoy (1) is arranged on the sea surface, and the wave energy power generation element is arranged inside the buoy (1) and generates electricity through waves on the sea surface; A microwave heating system, comprising a microwave heating box (2), a seawater desalination component and a thermal energy component, wherein the microwave heating box (2) is electrically connected to the wave energy power generation component via a power transmission line (3), the seawater desalination component and the thermal energy component are both arranged in the microwave heating box (2), the electric energy generated by the wave energy power generation component sequentially performs microwave heating on the seawater desalination component and the thermal energy component, and the water resources desalinated by the seawater desalination component are collected in a water storage tank (4); A collecting assembly comprises a collecting tank (5) and a purge member, wherein the collecting tank (5) and the purge member are respectively arranged in the microwave heating box (2), and the purge member is connected to the buoy (1) and is used to purge salt generated when the seawater desalination member desalinates seawater into the collecting tank (5). 2. A wave energy seawater desalination-high temperature thermal energy collection system based on microwave heating according to claim 1, characterized in that: the wave energy power generation element comprises an iron block (6) and a spring (7), the iron block (6) is connected to the top end of the buoy (1) through the spring (7), a plurality of magnetic blocks (8) are fixedly connected to the inner wall of the buoy (1) along the circumferential direction, the iron block (6) is located between the plurality of magnetic blocks (8), and the iron block (6) generates electrical energy by cutting the magnetic flux lines of the magnetic blocks (8). 3. A wave energy seawater desalination-high temperature thermal energy collection system based on microwave heating according to claim 2, characterized in that: the seawater desalination unit comprises two seawater chambers (11) arranged at two ends of the microwave heating box (2), seawater is arranged in the seawater chamber (11), the electric energy generated by the iron block (6) and the magnetic block (8) is used to perform microwave heating on the seawater in the seawater chamber (11), and the high temperature water vapor generated after the seawater is heated is collected in the water storage tank (4). 4. A wave energy seawater desalination-high temperature heat energy collection system based on microwave heating according to claim 3, characterized in that: the thermal energy component comprises an oil chamber (10) arranged in the microwave heating box (2), the oil chamber (10) is located between the two seawater chambers (11) and is separated by a glass plate (9), heat transfer oil is arranged in the oil chamber (10), and the electric energy generated by the iron block (6) and the magnetic block (8) is used to perform microwave heating on the heat transfer oil. 5. A wave energy seawater desalination-high temperature heat energy collection system based on microwave heating according to claim 4, characterized in that: the purge component comprises two air inlet pipes (12) arranged on the microwave heating box (2), one end of the two air inlet pipes (12) respectively extends into the two seawater cavities (11) and is located on a side close to the glass plate (9), the air inlet pipe (12) is used to purge salt adhered to the glass plate (9), the top of the side wall of the buoy (1) is connected to an exhaust pipe (13), and the other ends of the two air inlet pipes (12) are respectively connected to the exhaust pipe (13). 6. A wave energy seawater desalination-high temperature heat energy collection system based on microwave heating according to claim 3, characterized in that: the microwave heating box (2) is provided with two water inlets (14) and two exhaust ports (15), the two water inlets (14) and the two exhaust ports (15) are respectively connected to the two seawater chambers (11), the water inlet (14) is connected to the seawater through a water inlet pipe (16), the exhaust port (15) is connected to the water storage tank (4) through a pipe (17), and the water inlet pipe (16) is arranged in contact with the pipe (17). 7. A wave energy seawater desalination-high temperature heat energy collection system based on microwave heating according to claim 4, characterized in that: a movable door (18) and an oil drain port (19) are respectively provided at the top and bottom ends of the microwave heating box (2), the movable door (18) and the oil drain port (19) are respectively connected to the oil cavity (10), and an insulation layer (20) is fixedly connected to the inner wall of the oil cavity (10). 8. The wave energy seawater desalination-high temperature thermal energy collection system based on microwave heating according to claim 3, characterized in that a liquid level meter (21) is provided on the water storage tank (4). 9. A wave energy seawater desalination-high temperature heat energy collection system based on microwave heating according to claim 4, characterized in that: a temperature sensor (22) is provided on the microwave heating box (2), and a detection end of the temperature sensor (22) extends into the oil cavity (10). 10. The wave energy seawater desalination-high temperature thermal energy collection system based on microwave heating according to claim 1, characterized in that: a storage battery (23) is connected to the power transmission wire (3).