Seawater desalination device utilizing solar energy

Abstract

The utility model discloses a sea water desalination device utilizing solar energy, which comprises a greenhouse evaporation box, a solar power generation device, a solar power generation device, a solar power generation device and a solar power generation device, and is characterized in that the top of the greenhouse evaporation box is connected with one end of a steam pipe; the water storage tank is used as a container for condensing fresh water and is connected with the other end of the steam pipe; the Carnot cycle refrigeration system is provided with a cold end and a hot end, the cold end is provided with a coil pipe, the coil pipe is arranged in the water storage tank, a heat exchange medium circulates in the Carnot cycle refrigeration system, high-temperature steam in the steam pipe makes contact with the coil pipe at the cold end and is condensed and liquefied, and the hot end is provided with a radiator. The radiator is communicated with seawater, heat of the heat exchange medium is taken away by the seawater, and a compressor used for compressing the heat exchange medium is arranged on the Carnot cycle refrigerating system. And the solar power generation assembly supplies energy to the compressor and realizes operation of the desalination system. The solar energy desalination system is simple in structure, energy-saving, environment-friendly and efficient in production.

Description

Technical Field

[0001] The utility model belongs to the technical field of seawater desalination, and in particular relates to a seawater desalination device utilizing solar energy. Background Art

[0002] The water resources on the earth are limited, while the ocean resources are abundant. In order to cope with the water crisis, desalination of seawater is one of the important solutions. At present, there are many technologies for desalination of seawater, such as reverse osmosis, electrodialysis, compressed air distillation, etc. However, these treatment methods are relatively complex, with high investment costs and low efficiency.

[0003] Therefore, how to provide a seawater desalination device utilizing solar energy that is simple in structure, easy to use, high in efficiency and low in cost is a problem that those skilled in the art urgently need to solve. Utility Model Content

[0004] In view of this, the utility model provides a seawater desalination device utilizing solar energy, which utilizes solar energy to achieve seawater desalination treatment, with high treatment efficiency, energy saving and environmental protection.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a seawater desalination device utilizing solar energy, comprising:

[0006] A greenhouse evaporation box, into which seawater is introduced, and one end of a steam pipe is connected to the top of the greenhouse evaporation box;

[0007] A water storage tank, which serves as a container for condensing fresh water and is connected to the other end of the steam pipe;

[0008] A Carnot cycle refrigeration system, wherein the Carnot cycle refrigeration system is provided with a cold end and a hot end, wherein the cold end is provided with a coil and the coil is arranged inside a water storage tank, wherein a heat exchange medium circulates in the Carnot cycle refrigeration system, wherein the high-temperature steam in the steam pipe contacts the coil at the cold end and condenses and liquefies, wherein the hot end is provided with a radiator, wherein the radiator is connected with seawater and the heat of the heat exchange medium is taken away by the seawater, and wherein a compressor for compressing the heat exchange medium is provided on the Carnot cycle refrigeration system;

[0009] A solar power generation component is provided, wherein the solar power generation component supplies energy to the compressor and realizes the operation of the desalination system.

[0010] The beneficial effects of the utility model are as follows: the greenhouse evaporation box uses solar energy to provide energy to evaporate seawater, and the evaporated water vapor enters the water storage tank through the steam pipe. The water vapor contacts the coil at the cold end and is condensed into fresh water and then collected, thereby completing the process of seawater desalination. Specifically, the Carnot cycle refrigeration system is used to complete heat conduction, and the heat exchange medium in the coil at the cold end absorbs the heat of the water vapor and becomes gaseous. Finally, the heat of the heat exchange medium is dissipated by the radiator at the hot end and taken away by the seawater, and the heat exchange medium returns to the liquid state for the next cycle process. The device has high efficiency and low cost, and has positive application prospects.

[0011] Preferably, the greenhouse evaporation box is formed of a transparent material, and a plurality of heat-absorbing floating balls are arranged inside the greenhouse evaporation box.

[0012] The resulting technical effect is that the heat-absorbing buoy can accelerate the rise in seawater temperature and improve the efficiency of steam generation.

[0013] Preferably, the steam pipe is connected to a fan, the fan draws steam from the greenhouse evaporation box into the water storage tank, the coil is located at the inner top of the water storage tank, and the fan is electrically connected to the solar power generation component.

[0014] The resulting technical effect is that the fan can extract the steam in the greenhouse evaporation box and send it to the water storage tank, improving the efficiency of seawater desalination. The coil at the cold end will not interfere with the condensed water, and the condensed water can be removed regularly.

[0015] Preferably, the Carnot cycle refrigeration system is provided with a storage tank, the storage tank receives the heat exchange medium transported by the coil, the heat exchange medium is Freon, the heat exchange medium is heated to gas after heat exchange with steam in the water tank, the compressor is connected to the storage tank and sucks the heat exchange medium in the storage tank, the compressor discharges the high-temperature and high-pressure gaseous heat exchange medium into the radiator, the seawater in the radiator takes away the heat of the heat exchange medium and liquefies the heat exchange medium, the liquefied heat exchange medium enters the coil at the cold end after passing through the throttle in the Carnot cycle refrigeration system and circulates again.

[0016] The resulting technical effect is: fluorine as a heat exchange medium can take away heat in time. The fluorine in the coil is liquid and will absorb heat and evaporate. It is temporarily stored in the tank. The temporarily stored fluorine is sucked away and compressed by the compressor. The compressed high-temperature and high-pressure fluorine is dissipated in the radiator, and then the fluorine is liquefied and returns to the coil to continue the next cycle.

[0017] Preferably, the radiator includes a shell and an internal heat exchange coil, the heat exchange coil is connected to the pipeline of the Carnot cycle refrigeration system and circulates the heat exchange medium, the shell is made of plastic, the shell has a seawater channel on the outside corresponding to the heat exchange coil, the shell has a water inlet pipe joint and a water outlet pipe joint at both ends corresponding to the seawater channel, the water inlet pipe joint is connected to a water inlet pipe, the water outlet pipe joint is connected to a water outlet pipe, the water inlet pipe and the water outlet pipe are connected to the tidal flat seawater and form a seawater circulation loop, the water pipe is provided with a seawater pump, and the seawater pump is electrically connected to the solar power generation component.

[0018] The resulting technical effect is: using a shell and tube heat exchanger made of plastic, the outside of the shell and tube heat exchanger is a shell, the internal heat exchange coil is a fluorine pipe, the outside of the fluorine pipe is a cooling water channel, and the seawater in the cooling water channel will take away the heat generated by the compressor compressing the heat exchange medium.

[0019] Preferably, the water inlet pipe is connected to a water supply pipe via a three-way joint, the water supply pipe is connected and communicated with the greenhouse evaporation box, the seawater pump pumps seawater into the greenhouse evaporation box via the water supply pipe, the water supply pipe is connected to a float water level control valve, and the control float of the float water level control valve is located on the water surface of the greenhouse evaporation box.

[0020] The resulting technical effect is: water is supplied to the greenhouse evaporation box through a seawater pump and a water supply pipe, and the water level in the greenhouse evaporation box is automatically controlled by a float water level control valve.

[0021] Preferably, the solar power generation component includes a solar panel, a battery and a controller, the solar panel is electrically connected to the battery, the battery is electrically connected to the controller, and the controller is respectively connected to the compressor, the fan, and the seawater pump via electrical signals to control the operation of the seawater desalination system.

[0022] The resulting technical effect is: using solar energy to provide energy for system operation, saving energy and protecting the environment, and automatically controlling the entire desalination process through a controller with high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a general structure diagram of a seawater desalination device utilizing solar energy.

[0024] 1 greenhouse evaporator, 2 steam pipe, 3 water tank, 4 coil, 5 radiator, 6 compressor, 7 storage tank, 8 solar power generation component, 81 solar panel, 82 battery, 83 controller, 9 heat absorption float, 10 fan, 11 seawater pump, 12 water inlet pipe, 13 water outlet pipe, 14 water supply pipe, 15 float water level control valve. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See the attached Figure 1 According to an embodiment of the utility model, a seawater desalination device using solar energy comprises:

[0027] A greenhouse evaporation box 1, into which seawater is introduced, and one end of a steam pipe 2 is connected to the top of the greenhouse evaporation box 1;

[0028] A water storage tank 3, which serves as a container for condensing fresh water and is connected to the other end of the steam pipe 2;

[0029] Carnot cycle refrigeration system, the Carnot cycle refrigeration system is provided with a cold end and a hot end, the cold end is provided with a coil 4 and the coil is arranged inside a water storage tank 3, a heat exchange medium circulates in the Carnot cycle refrigeration system, the high-temperature steam in the steam pipe 2 contacts the coil at the cold end to be condensed and liquefied, a radiator 5 is provided at the hot end, the radiator 5 is connected with seawater and the heat of the heat exchange medium is taken away by the seawater, and a compressor 6 for compressing the heat exchange medium is provided on the Carnot cycle refrigeration system;

[0030] A solar power generation component 8 supplies energy to the compressor and enables the operation of the desalination system.

[0031] In other embodiments, the greenhouse evaporation box 1 is formed of a transparent material to facilitate sunlight exposure, and a plurality of black heat-absorbing floating balls 9 are arranged inside the greenhouse evaporation box 1. The sunlight is irradiated on the black plastic floating balls through the transparent cover plate, and the black plastic floating balls absorb the sunlight to increase their temperature. As the temperature of the seawater in the box increases, the saturated vapor pressure in the box also increases, thereby increasing the water vapor content in the air in the box.

[0032] In other specific embodiments, a fan 10 is connected to the steam pipe 2, and the fan 10 draws the steam in the greenhouse evaporation box into the water storage tank 3. The coil 4 is located at the inner top of the water storage tank 3. The fan 10 is electrically connected to the solar power generation component 8. The coil is a copper tube with high heat transfer efficiency.

[0033] In some other embodiments, a storage tank 7 is provided in the Carnot cycle refrigeration system, and the storage tank 7 receives the heat exchange medium transported by the coil 4. The heat exchange medium is Freon. The heat exchange medium is heated to a gas state after heat exchange with steam in the water tank. The compressor 6 is connected to the storage tank 7 and sucks the heat exchange medium in the storage tank. The compressor 6 discharges the high-temperature and high-pressure gaseous heat exchange medium into the radiator 5. The seawater in the radiator 5 takes away the heat of the heat exchange medium and liquefies the heat exchange medium. The liquefied heat exchange medium enters the coil at the cold end after passing through the throttle in the Carnot cycle refrigeration system and circulates again.

[0034] In some other specific embodiments, the radiator 5 includes a shell and an internal heat exchange coil, the heat exchange coil is connected to the pipeline of the Carnot cycle refrigeration system and circulates the heat exchange medium, the shell is made of plastic, the shell has a seawater channel on the outside of the heat exchange coil corresponding to the shell, and the shell has a water inlet pipe joint and a water outlet pipe joint at both ends of the seawater channel corresponding to the shell, the water inlet pipe joint is connected to the water inlet pipe 12, the water outlet pipe joint is connected to the water outlet pipe 13, the water inlet pipe 12 and the water outlet pipe 13 are connected to the tidal flat seawater and form a seawater circulation loop, the water inlet pipe 12 is provided with a seawater pump 11, and the seawater pump 11 is electrically connected to the solar power generation component. The circulation of the tidal flat seawater is used to take away the heat in the heat exchange medium and liquefy it. The radiator has a simple structure, is easy to make, and is convenient to use.

[0035] In other embodiments, the water inlet pipe 12 is connected to a water supply pipe 14 via a three-way joint, the water supply pipe 14 is connected to and communicated with the greenhouse evaporation box 1, the seawater pump 11 pumps seawater into the greenhouse evaporation box 1 through the water supply pipe, and a float water level control valve 15 is connected to the water supply pipe 14, and the control float of the float water level control valve 15 is located on the water surface of the greenhouse evaporation box.

[0036] In other specific embodiments, the solar power generation component 8 includes a solar panel 81, a battery 82 and a controller 83. The solar panel 81 is electrically connected to the battery 82, and the battery 82 is electrically connected to the controller 83. The controller 83 is respectively connected to the compressor 6, the fan 10, and the seawater pump 11 via electrical signals and controls the operation of the seawater desalination system.

[0037] Working principle:

[0038] Solar energy provides energy for the seawater evaporation tank, causing the seawater inside to evaporate due to heat. A large amount of evaporated steam enters the water storage tank through the steam pipe. There is a coil in the water storage tank. At this time, the high-temperature steam contacts the outer wall of the coil and condenses, and then liquefies into water droplets and is collected in the water storage tank. The refrigeration system is completed by the fluorine circuit. The fluorine at the cold end is heated into a gaseous state and temporarily stored in a storage tank. The compressor draws fluorine from the storage tank for compression. The compressed high-temperature and high-pressure gaseous fluorine enters the radiator. At this time, the fluorine in the heat exchange coil is taken away by the water in the external cooling water pipe, and then liquefied, and enters the cold end coil through the throttle, preparing for the next cycle working process.

[0039] As for the device and the method of use disclosed in the embodiment, since they correspond to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A seawater desalination device utilizing solar energy, characterized in that: include: A greenhouse evaporation box (1), seawater is introduced into the greenhouse evaporation box (1), and one end of a steam pipe (2) is connected to the top of the greenhouse evaporation box (1); A water storage tank (3), which serves as a container for condensing fresh water and is connected to the other end of the steam pipe (2); A Carnot cycle refrigeration system, wherein the Carnot cycle refrigeration system is provided with a cold end and a hot end, the cold end is provided with a coil (4) and the coil is arranged inside a water storage tank (3), a heat exchange medium circulates in the Carnot cycle refrigeration system, the high-temperature steam in the steam pipe (2) contacts the coil at the cold end to be condensed and liquefied, the hot end is provided with a radiator (5), the radiator (5) is connected to seawater and the seawater takes away the heat of the heat exchange medium, and the Carnot cycle refrigeration system is provided with a compressor (6) for compressing the heat exchange medium; A solar power generation component (8) is used to supply energy to the compressor and realize the operation of the desalination system.

2. The seawater desalination device using solar energy according to claim 1, characterized in that: The greenhouse evaporation box (1) is formed of a transparent material, and a plurality of heat-absorbing floating balls (9) are arranged inside the greenhouse evaporation box (1).

3. The seawater desalination device using solar energy according to claim 1, characterized in that: The steam pipe (2) is connected to a fan (10), the fan (10) extracts steam from the greenhouse evaporation box and enters the water storage tank (3), the coil (4) is located at the top of the inner side of the water storage tank (3), and the fan (10) is electrically connected to the solar power generation component (8).

4. The seawater desalination device using solar energy according to claim 1, characterized in that: The Carnot cycle refrigeration system is provided with a storage tank (7), the storage tank (7) receives the heat exchange medium transported by the coil (4), the heat exchange medium is Freon, the heat exchange medium is heated to gas after heat exchange with steam in the water tank, the compressor (6) is connected to the storage tank (7) and sucks the heat exchange medium in the storage tank, the compressor (6) discharges the high-temperature and high-pressure gaseous heat exchange medium into the radiator (5), the seawater in the radiator (5) takes away the heat of the heat exchange medium and liquefies the heat exchange medium, and the liquefied heat exchange medium enters the coil at the cold end after passing through the throttle in the Carnot cycle refrigeration system and circulates again.

5. The seawater desalination device using solar energy according to claim 4, characterized in that: The radiator (5) comprises a shell and an internal heat exchange coil, the heat exchange coil is connected to the pipeline of the Carnot cycle refrigeration system and circulates the heat exchange medium, the shell is made of plastic material, the outer side of the shell corresponding to the heat exchange coil is provided with a seawater channel, the two ends of the shell corresponding to the seawater channel are provided with a water inlet pipe joint and a water outlet pipe joint, the water inlet pipe joint is connected to a water inlet pipe (12), the water outlet pipe joint is connected to a water outlet pipe (13), the water inlet pipe (12) and the water outlet pipe (13) are connected to the tidal flat seawater and form a seawater circulation loop, the water inlet pipe (12) is provided with a seawater pump (11), and the seawater pump (11) is electrically connected to the solar power generation component.

6. The seawater desalination device using solar energy according to claim 5, characterized in that: The water inlet pipe (12) is connected to a water supply pipe (14) via a three-way joint; the water supply pipe (14) is connected to and communicates with the greenhouse evaporation box (1); the seawater pump (11) pumps seawater into the greenhouse evaporation box (1) via the water supply pipe; the water supply pipe (14) is connected to a float water level control valve (15); a control float of the float water level control valve (15) is located on the water surface of the greenhouse evaporation box.

7. The seawater desalination device using solar energy according to claim 6, characterized in that: The solar power generation assembly (8) comprises a solar panel (81), a storage battery (82) and a controller (83); the solar panel (81) is electrically connected to the storage battery (82); the storage battery (82) is electrically connected to the controller (83); the controller (83) is respectively connected to the compressor (6), the fan (10) and the seawater pump (11) via electrical signals and controls the operation of the seawater desalination system.

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