CN113880176B

CN113880176B - Sea water desalination device and system

Info

Publication number: CN113880176B
Application number: CN202111392396.5A
Authority: CN
Inventors: 刘文崇; 任超; 王永泽
Original assignee: Fujian Hada Intelligence Technology Co ltd
Current assignee: Fujian Hada Intelligence Technology Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2023-09-26
Anticipated expiration: 2041-11-19
Also published as: CN113880176A

Abstract

The application provides a seawater desalination device and a seawater desalination system. The heating bin is internally provided with a first outer cavity and a first inner cavity, and the first outer cavity is communicated with the first inner cavity through a gap; a second outer cavity and a second inner cavity are arranged in the vacuum bin, and the second outer cavity and the second inner cavity are sealed and isolated; the second outer cavity is provided with a water inlet, the second inner cavity comprises an evaporation cavity and a liquid collecting cavity, and the liquid collecting cavity is arranged between the evaporation cavity and the second outer cavity. The application heats the seawater by utilizing solar energy, and is provided with the vacuum bin, so that the heated seawater can be quickly converted into steam in the vacuum bin; the gap is arranged to control the sea water amount contained in the first inner cavity, so that a small amount of sea water can be quickly heated to the corresponding temperature, a large amount of energy is not required to be consumed, and the sea water desalting efficiency is greatly improved.

Description

Sea water desalination device and system

Technical Field

The application relates to the technical field of water source desalination, in particular to a sea water desalination device and a sea water desalination system.

Background

At the present moment of the increasing lack of fresh water resources, how to remove salt in the sea water, so that the sea water becomes fresh water resources available for human use becomes an increasingly important problem. In the prior art, the sea water is usually desalted by adopting a distillation method, but the sea water is heated to the boiling point to change the water into water vapor, so that the sea water is heated by consuming larger energy, the heating process is long, and the sea water desalting efficiency is low.

Disclosure of Invention

Therefore, it is necessary to provide a seawater desalination device to solve the problems of high energy consumption and low seawater desalination efficiency in the seawater desalination mode in the prior art.

The application provides a sea water desalination device, comprising:

the heating device comprises a heating bin, wherein a first outer cavity and a first inner cavity are arranged in the heating bin, and the first outer cavity and the first inner cavity are communicated through a gap;

the vacuum bin is internally provided with a second outer cavity and a second inner cavity, and the second outer cavity and the second inner cavity are sealed and isolated; the second outer cavity is provided with a water inlet, the second inner cavity comprises an evaporation cavity and a liquid collecting cavity, the liquid collecting cavity is arranged between the evaporation cavity and the second outer cavity, and the liquid collecting cavity is provided with a water outlet; the second outer cavity is communicated with the first outer cavity through a first conduit, and the evaporation cavity is communicated with the first inner cavity through a second conduit;

an optical assembly for converting optical energy into thermal energy and heating the liquid in the first lumen;

and the vacuumizing equipment is communicated with the evaporating cavity and is used for vacuumizing the evaporating cavity.

As a further aspect of the present application, the method further includes:

a float for providing buoyancy to the optical assembly to position the optical assembly above sea level.

As a further aspect of the present application, the vacuum pumping apparatus includes:

the suction assembly comprises a suction assembly body, a first movable piece and a suction pipe; a first movable cavity is arranged in the suction assembly body, and the first movable piece can reciprocate in the first movable cavity; the suction pipe is used for pumping out the gas in the evaporation cavity when the first movable piece reciprocates, and a one-way valve is further arranged on the suction pipe;

the weight piece is arranged below the suction assembly body and drives the suction assembly body to move downwards to a preset position under the action of gravity.

As a further aspect of the present application, the sea water desalination apparatus further comprises:

and the restraint piece is used for connecting the floating piece and the counterweight piece and limiting the relative distance between the floating piece and the counterweight piece.

the pumping device is arranged below the pumping assembly or the pumping assembly is arranged below the pumping device and comprises a pumping assembly body and a second movable piece, a second movable cavity is arranged in the pumping assembly body, and the second movable piece can reciprocate in the second movable cavity; the second movable cavity is connected with the water outlet of the liquid collecting cavity through a third conduit;

the pumping assembly body and the pumping assembly body are integrally formed, and the first movable cavity and the second movable cavity are mutually isolated;

the weight comprises a movable part and a weight part, the second movable part is the movable part of the weight, and the weight part moves downwards to a preset position.

the water pumping device comprises a water pumping assembly body and a second movable piece, wherein a second movable cavity is arranged in the water pumping assembly body, and the second movable piece can reciprocate in the second movable cavity; the second movable cavity is connected with the water outlet of the liquid collecting cavity through a third conduit.

As a further aspect of the present application, the inner surface of the second inner cavity is a spherical surface or an arched surface.

As a further scheme of the application, each heating bin is correspondingly provided with an optical component, the optical component comprises one or more convex lenses, and the optical component is arranged at the top of the heating bin.

As a further scheme of the application, the angle adjusting device comprises a photosensitive sensor, a controller and a driving mechanism; the controller is respectively and electrically connected with the photosensitive sensor and the driving mechanism, and the controller is used for controlling the driving mechanism to adjust the included angle between the optical assembly and the horizontal plane according to signals transmitted by the photosensitive sensor.

Compared with the prior art, the seawater desalination device can reduce the boiling point of seawater by arranging the vacuum bin, so that the seawater which is preliminarily heated by the heating bin can be quickly converted into steam after being subjected to the vacuum bin, and the seawater in the vacuum bin can be gasified without reaching 100 ℃ and about 55 ℃. The amount of seawater contained in the first inner cavity can be controlled through a gap between the first inner cavity and the first outer cavity in the heating bin, so that a small amount of seawater can be quickly heated to a corresponding temperature. Because the whole vacuum bin of the sea water desalting device is soaked in sea water, steam precooling can be quickly condensed into water drops, and the sea water desalting efficiency can be effectively improved. In addition, the solar energy is converted into heat energy by the optical component, so that the seawater in the heating bin is heated, and the energy consumption is cleaner.

In a second aspect of the present application there is also provided a seawater desalination system comprising:

a plurality of desalination plants according to the first aspect of the application;

the liquid pumping equipment is respectively communicated with the water outlets of the liquid collecting cavities of the sea water desalination devices and is used for pumping liquid in the liquid collecting cavities of the sea water desalination devices;

and the liquid storage device is used for storing the liquid extracted by the liquid extraction device.

Compared with the prior art, the technical scheme is characterized in that the seawater desalination device provided by the first aspect of the application is utilized to desalinate seawater, liquid collected in the liquid collecting cavities of each seawater desalination device is pumped to the liquid storage device by the liquid pumping device, and the liquid is concentrated and stored in the liquid storage device, so that the desalinated water is conveniently and uniformly taken.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a sea water desalination device according to an embodiment;

FIG. 2 is a schematic diagram of a seawater desalination plant according to an embodiment;

FIG. 3 is a schematic structural view of a heating chamber and a vacuum chamber of the sea water desalination device according to the embodiment;

FIG. 4 is a top view of a desalination plant according to an embodiment;

fig. 5 is a schematic diagram of a vacuum pumping apparatus according to an embodiment.

Reference numerals illustrate:

1. a heating bin;

11. a first outer cavity; 12. a first lumen;

2. a vacuum bin;

21. a second outer cavity; 22. a second lumen; 221. an evaporation chamber; 222. a liquid collection cavity; 23. a second conduit;

3. an optical component;

4. a vacuum pumping device;

41. a suction assembly; 411. a first movable member; 412. a suction tube; 413. an intake valve; 414. an exhaust valve;

42. a weight member; 421. a weight part; 422. a movable part;

5. a float;

6. a restraint;

7. pumping equipment; 71. a third conduit;

81. a photosensitive sensor; 82. a driving mechanism.

Detailed Description

In order to describe the technical content, constructional features, achieved objects and effects of the technical solution in detail, the following description is made in connection with the specific embodiments in conjunction with the accompanying drawings.

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

Fresh water is one of the basic substances that human society relies on to survive and develop. As fresh water resources are becoming more and more scarce, people have been trying to desalinate seawater by solar energy, and there has been a long history. The process of removing salt from seawater to obtain fresh water is called seawater desalination, also known as seawater desalination. The methods of sea water desalination are largely divided into two main categories: (1) Fresh water is extracted from sea water by distillation, reverse osmosis, hydrate, solvent extraction and freezing; (2) The salt in the seawater is removed by electroosmosis, ion exchange and pressure osmosis.

The solar energy is mainly used for distillation, so that the early-stage solar energy sea water desalination device is commonly called a solar energy distiller. Distillation system an example of a passive solar distillation system is a tray solar still, which has been used for nearly 150 years. Because of its simple structure and convenient material drawing, it has been widely used up to now. Compared with the traditional power source and heat source, the solar energy has the advantages of safety, environmental protection and the like, and the combination of the solar energy collection system and the desalination process is a sustainable sea water desalination technology. The solar sea water desalination technology is paid attention to by the advantages of no consumption of conventional energy, no pollution, high purity of the obtained fresh water and the like. However, this method needs to heat the seawater to the boiling point to change the water into water vapor, and the heating process needs to consume a lot of energy, and the heating process is also very long, so that the efficiency of the seawater desalination is low.

In order to solve the problems of long heating process, low efficiency and the like of the conventional sea water desalting device, referring to fig. 1 and 2, the application provides a sea water desalting device which comprises a heating bin 1, a vacuum bin 2, an optical component 3 and vacuumizing equipment 4.

The heating bin 1 is a container for heating seawater in the seawater desalination device. The heating bin 1 heats the seawater using solar energy focused by the optical assembly 3. Referring to fig. 3, the heating cartridge 1 is provided inside with a first outer chamber 11 and a first inner chamber 12. The first outer chamber 11 is disposed outside the first inner chamber 12. The first outer cavity 11 and the first inner cavity 12 are relatively isolated, a gap is arranged between the first inner cavity 12 and the first outer cavity 11, and the first outer cavity 11 and the first inner cavity 12 are communicated through the gap. Seawater may pass from the first outer chamber 11 through the slit into the first inner chamber 12. The amount of water in the first chamber 12 can be controlled by setting the height and width of the slit. Preferably, the width of the gap is 3-8mm.

The vacuum chamber 2 is provided with a second outer chamber 21 and a second inner chamber 22 inside. The second outer chamber 21 is provided with a water inlet, the second inner chamber 22 includes an evaporation chamber 221 and a liquid collecting chamber 222, and the liquid collecting chamber 222 is disposed between the evaporation chamber 221 and the second outer chamber 21, and is disposed around the evaporation chamber 221. The seawater changes from a liquid state to a gas state in the evaporation chamber 221, and changes from a gas state to a liquid state in the liquid collection chamber 222. The top of the liquid collecting cavity 222 is communicated with the top of the evaporation cavity 221, the bottom of the liquid collecting cavity 222 is similar to a groove, and the bottom of the liquid collecting cavity 222 is isolated from the bottom of the evaporation cavity 221 by a groove plate. The liquid collecting cavity 222 is provided with a water outlet, and the collected condensed water flows out of the vacuum bin 2 from the water outlet. The second outer chamber 21 communicates with the first outer chamber 11 through a first conduit and the evaporation chamber 221 communicates with the first inner chamber 12 through a second conduit 23. The second outer chamber 21 is sealed from the second inner chamber 22 and no fluid can pass between them. The vacuum bin 2 is made of an anti-corrosion material, so that the vacuum bin 2 is prevented from being corroded after being soaked in seawater for a long time. Preferably, the vacuum bin 2 is made of titanium alloy material, so that the vacuum bin can be better prevented from being corroded by seawater.

The optical assembly 3 is used to convert light energy into heat energy for heating the liquid in the first cavity 12. In the present embodiment, the optical component 3 is an optical element having a focusing function, and the optical component 3 may be a groove-type parabolic mirror, a convex lens, or the like. Preferably, the optical assembly 3 employs one or more convex lenses. The optical assembly 3 focuses sunlight into the heating chamber 1 by refraction to raise the temperature of the object at the focal position.

The vacuum pumping device 4 is communicated with the evaporation cavity 221 and is used for carrying out vacuum pumping treatment on the evaporation cavity 221. The evacuation device 4 can reduce the air pressure in the evaporation chamber 221. The evacuation apparatus 4 may be a hydraulic ejector, a steam jet pump, a reciprocating vacuum pump, or a centrifugal vacuum pump, and in short, any apparatus capable of evacuating the evaporation chamber 221 is within the scope of the present embodiment.

The first conduit is adapted to communicate the first and second outer chambers so that seawater can enter the first outer chamber 11 from the second outer chamber 21. The second conduit 23 is used to communicate the first lumen 12 with the evaporation chamber 221. The first and second conduits may be rigid conduits or flexible conduits. The first conduit and the second conduit may be made of rubber, plastic, stainless steel, titanium alloy, etc.

The working principle of the seawater desalination device of the application is as follows: the evacuation device 4 evacuates the evaporation chamber 221 so that the air pressure in the evaporation chamber 221 is reduced. Since the evaporation chamber 221 communicates with the first inner chamber 12 through the second conduit 23, the air pressure of the first inner chamber 12 is also reduced accordingly. The first inner cavity 12 is connected with the first outer cavity 11 through a slit, the air pressure of the first outer cavity 11 is reduced, and the second outer cavity 21 is communicated with the first outer cavity 11 through a first conduit, so that the air pressure in the second outer cavity 21 is reduced. At this point the pressure in the second outer chamber 21 is less than the pressure of the external environment and seawater is drawn into the second outer chamber 21 through the water inlet and subsequently into the first outer chamber 11 through the first conduit. The heating bin 1 is provided with a first inner cavity 12 and a first outer cavity 11, the first inner cavity 12 and the first outer cavity 11 are communicated through a gap, and seawater in the first outer cavity 11 enters the first inner cavity 12 through the gap, so that the seawater in the first inner cavity 12 is controlled within a preset capacity range. By the arrangement, in the process of desalting the seawater, the seawater in the whole heating bin 1 is not required to be heated at the same time, and only a small amount of seawater entering the first inner cavity 12 is required to be heated, so that the heating speed of the seawater can be improved.

The optical assembly 3 focuses sunlight into the first interior chamber 12, converts the light energy into heat energy, and increases the temperature of the seawater within the first interior chamber 12. After the seawater in the first chamber 12 is heated to a certain temperature, it enters the second chamber 22 through the second conduit 23. As the second cavity 22 is evacuated, the boiling point of the seawater in the vacuum environment is reduced, and the heated seawater in the first cavity 12 is quickly evaporated into steam after entering the evaporation cavity 221 along the second conduit 23. In the use process, the vacuum bin can be placed below the sea level, when the seawater is vaporized into steam in the evaporating cavity, the temperature of the seawater entering the second outer cavity 21 is far lower than the temperature in the evaporating cavity, and the vacuum bin can cool the seawater steam in the second inner cavity 22, so that the seawater steam in the second inner cavity 22 is condensed into water drops when meeting condensation, and then the water drops are collected into the liquid collecting cavity 222 along the side wall of the second inner cavity 22.

Compared with the prior art, the application performs vacuumizing treatment on the evaporating cavity 221 by arranging the vacuumizing equipment 4, so that the pressure in the evaporating cavity 221 is reduced, the boiling point of seawater can be reduced, and the seawater heated by the heating bin can be quickly vaporized into steam after entering the evaporating cavity 221. In the practical application process, after the vacuumizing treatment, the seawater in the evaporating cavity can be vaporized without reaching 100 ℃ and at about 55 ℃. Because the vacuum bin of the sea water desalting device is directly soaked in sea water, steam can be quickly condensed into water drops when meeting cold, and the sea water desalting efficiency is improved. In addition, the solar energy is converted into heat energy by the optical component 3, the seawater is heated by matching with the heating bin 1, the structure is simple, a large amount of electric energy is not required to be consumed for heating, and the resource is fully utilized and saved.

In a preferred embodiment, the desalination plant further comprises a float 5 for providing buoyancy to the optical assembly 3 such that the optical assembly 3 is located above sea level. The float 5 may be plastic, foam or other relatively buoyant material. Preferably, the number of floats 5 is plural, the greater the number of floats 5, the greater the buoyancy that can be provided. As shown in fig. 4, in the present embodiment, the number of the floating members 5 is 4, and the floating members are circumferentially disposed around the vacuum chamber 2 so that the optical assembly 3 is located above the sea level when the vacuum chamber 2 is submerged in water. Preferably, the shapes and the sizes of the 4 floating pieces 5 are the same, so that the seawater desalination device can be subjected to uniform buoyancy from four directions, the problem that the seawater condensation effect is poor due to uneven stress is avoided, and in addition, the floating pieces 5 provide continuous floating force on the water surface for the optical component 3, so that the effect that the optical component 3 is soaked in seawater and the focusing effect is influenced is avoided.

In a preferred embodiment, as shown in fig. 5, the evacuation apparatus 4 includes a suction assembly 41. The suction assembly 41 comprises a suction assembly body, a first movable member 411 and a suction tube 412. The suction assembly body is provided with a first movable chamber therein, in which the first movable member 411 is reciprocable. The suction pipe 412 is used for pumping out the gas in the evaporation chamber 221 when the first movable member 411 reciprocates, and a check valve is further provided on the suction pipe 412. The weight member 42 is disposed below the suction assembly body, and drives the suction assembly body to move downward to a predetermined position by gravity.

The suction unit 41 is a unit that sucks external air into the suction unit 41 by using a pressure difference generated when the first movable member 411 is drawn to realize vacuum suction. The first active cavity refers to the complete, large cavity within the pumping assembly 41. The cross-sectional shape and size of the first movable member 411 is adapted to the cross-sectional shape and size of the suction assembly body such that the first movable member 411 can move within the first movable chamber and gas cannot pass through the gap between the first movable member 411 and the suction assembly body. The suction tube 412 is a hollow tube, the interior of which allows air to circulate. The suction pipe 412 is provided with a check valve for sucking the gas of the vacuum chamber 2 into the suction assembly 41, and hereinafter referred to as an intake valve 413 for convenience of distinction. The counterweight 42, which is also called a balance and a weighting element, can balance the buoyancy of the floating element 5 and reduce the shaking amplitude of the sea water desalting device in sea water. A one-way valve for venting is also provided on the suction assembly body, hereinafter referred to as a venting valve 414. The air inlet valve 413 and the air outlet valve 414 are one-way valves, which can ensure that the air moves towards one direction, prevent backflow and prevent seawater from entering.

In the use process, the vacuum bin of the sea water desalting device is placed under water, and the suction component 41 is arranged below the vacuum bin, so that the suction component 41 can be ensured not to mix air when the evaporation bin is vacuumized. The float 5 floats on the sea surface with the sea waves up and down, while the counterweight 42 sinks under the force of gravity. When sea waves come, the floating piece 5 pulls the first movable piece 411 upwards, the weight piece 42 pulls the drawing assembly body downwards, at this time, the first movable piece 411 moves upwards relative to the drawing assembly body, the cavity below the first movable piece 411 is increased, the total amount of gas in the first cavity is unchanged, so that the density of the gas is reduced, the cavity pressure below the first movable piece 411 is reduced, and the air inlet valve 413 on the suction pipe 412 is opened. Since the pressure in the evaporation chamber 221 is higher than the pressure in the suction assembly 41 at this time, the gas in the evaporation chamber 221 is sucked into the cavity in the suction assembly 41 through the suction pipe 412 and the air inlet valve 413, forming a suction process. The evaporation chamber 221 is also in a negative pressure state.

When the wave fluctuation is reduced, the force of the floating member 5 floating upward to drive the first movable member 411 to move upward is also reduced, and the weight member 42 continues to pull the suction assembly body downward, and the first movable member 411 will move from top to bottom. As the first movable member 411 gradually moves downward, the cavity under the first movable member 411 is gradually compressed, and the pressure increases, at which time the intake valve is closed. When the pressure of the gas in the cylinder reaches or is slightly greater than one atmosphere, the exhaust valve 414 is opened, exhausting the gas to atmosphere, completing one cycle. When the next wave gets damp, the first movable member 411 moves from bottom to top again, sucking in a part of the gas, and repeating the previous cycle.

When the suction assembly 41 sucks air, the first movable member 411 moves to the topmost end of the first movable chamber; when the suction assembly exhausts, the first movable piece moves to the bottommost end of the first movable cavity, and the vacuumizing effect is optimal.

By the arrangement, the power supply is not required to be configured for the vacuumizing equipment 4, and the vacuumizing equipment 4 is driven to work by directly utilizing tidal energy, so that the energy consumption is greatly reduced. Moreover, the vacuumizing function of the evaporating cavity can be realized by utilizing the up-and-down fluctuation of the sea wave, and the embarrassment that the sea water desalting device cannot work after the power supply of the storage battery is exhausted is avoided. Compared with the method of converting solar energy into electric energy and then driving the vacuumizing equipment 4, the method directly converts the tidal energy into kinetic energy, and has higher energy conversion rate and higher efficiency.

In other embodiments, the evacuation device 4 is equipped with a battery and a control unit, the evacuation device 4 is driven by the battery power generation, and the intake valve 413 and the exhaust valve 414 are controlled to open and close by the control unit.

In a preferred embodiment, the sea water desalination device further comprises a restriction 6. The restraint 6 is used for connecting the float 5 and the weight 42 for limiting the relative distance of the float 5 and the weight 42. The floating piece 5 and the counterweight 42 are flexibly connected, so that a certain buffering effect can be achieved when the floating piece 5 and the counterweight 42 are pulled to the limit, and the later maintenance is convenient. In particular, the constraint 6 may be a chain, a rope, a spring, etc. The distance between the floating piece 5 and the counterweight piece 42 needs to be limited, so that the counterweight piece 42 and the floating piece 5 are prevented from being separated from the sea water desalination device after sea waves flap the sea water desalination device, and the pulling action of the counterweight piece 42 and the floating piece 5 on two ends of the sea water desalination device can be reduced. Further, collars are respectively arranged on the floating piece 5 and the weight piece 42, and the restraint piece 6 passes through the collars to realize connection of the floating piece 5 and the weight piece 42. So set up, follow-up dismantlement constraint 6 of being convenient for is maintained.

In a preferred embodiment, the sea water desalination device further comprises a water pumping device 7. The pumping device 7 is arranged below the pumping assembly 41 or the pumping assembly 41 is arranged below the pumping device 7, and comprises a pumping assembly body and a second movable piece, wherein a second movable cavity is arranged in the pumping assembly body, and the second movable piece can reciprocate in the second movable cavity. The second movable chamber is connected with the water outlet of the liquid collecting chamber 222 through the third conduit 71. The pumping assembly body and the pumping assembly body are integrally formed, and the first movable cavity and the second movable cavity are mutually isolated. The weight member 42 includes a movable portion 422 and a weight portion 421, and the second movable member is the movable portion 422 of the weight member 42, and the weight portion 421 is moved downward to a predetermined position.

The water pumping device 7 may be a centrifugal pump, a jet pump, an air compressor, a deep well pump, or the like, and in short, any device capable of delivering fresh water out of the liquid collecting chamber 222 is within the scope of the present embodiment. The pumping assembly body and the pumping assembly body are integrally formed, so that the structural stability of the pumping assembly body and the pumping assembly body can be enhanced, and the positions of the pumping assembly and the pumping assembly 41 can be relatively fixed. The first movable chamber and the second movable chamber are isolated from each other, so that the pumping assembly and the pumping assembly 41 can simultaneously and independently operate, and simultaneously pumping treatment and vacuuming treatment are performed.

Preferably, the pumping equipment 7 and the vacuumizing equipment 4 share a power source, so that the pumping equipment 7 and the vacuumizing equipment 4 are driven by the same power source, and the pumping equipment 7 is not required to be additionally provided with a power source, so that the space can be saved, and the volume of the sea water desalting device is reduced. In this embodiment, the gravity of the counterweight and the force of the ocean waves provide the source of power for the pumping device and the vacuuming device.

Preferably, the second movable member is a movable portion 422 of the counterweight member 42, and the movable portion 422 directly reciprocates in the second movable cavity, so that materials for additionally arranging the second movable member are saved, and the stability of the connecting structure of the counterweight member 42 and the pumping assembly is improved. In the present embodiment, the area of the cross section of the movable portion 422 is smaller than the area of the cross section of the weight portion 421. So set up, on the one hand be convenient for movable part 422 to do reciprocating motion in the second movable chamber, on the other hand, also can prevent that counter weight 421 from getting into the second movable chamber, cause equipment damage.

In a preferred embodiment, the sea water desalination device further comprises a water pumping device 7. The pumping device 7 comprises a pumping assembly body and a second movable member. The pumping assembly body is internally provided with a second movable cavity, and the second movable piece can reciprocate in the second movable cavity. The cross section shape and the size of the second movable piece are matched with those of the water pumping assembly body, so that the second movable piece can move in the second movable cavity, and gas cannot pass through gaps between the second movable piece and the water pumping assembly body. The second movable chamber is connected with the water outlet of the liquid collecting chamber 222 through the third conduit 71. The water pumping device 7 may be a centrifugal pump, a jet pump, an air compressor, a deep well pump, or the like, and in short, any device capable of delivering fresh water out of the liquid collecting chamber 222 is within the scope of the present embodiment. Compared with the integrated arrangement of the water pumping device 7 and the vacuumizing device 4, the water pumping device 7 is independently arranged, so that the failure occurrence rate can be reduced. In case the pumping equipment 7 breaks down, the pumping equipment 7 is directly replaced, the vacuumizing equipment 4 is not required to be detached and maintained together, and the maintenance efficiency is improved.

In a preferred embodiment, the inner surface of the second lumen 22 is spherical or arcuate. The vacuum bin 2 is soaked in the seawater, and the temperature of the side wall of the vacuum bin 2, which is in contact with the seawater, is low, so that the evaporation cavity 221 is cooled. And the second outer chamber 21 also contains seawater therein, which also serves to cool the side walls of the evaporation chamber 221. The seawater changes from a liquid state to a gaseous state in the evaporation chamber 221, forming a vapor that moves within the second interior chamber 22. When the steam contacts the inner wall of the second chamber 22 at a lower temperature, it cools and condenses into water droplets. The inner surface of the second inner cavity 22 is provided with a spherical or arched surface, and under the action of surface tension, water drops are gathered downwards in the liquid collecting cavity 222 along the second inner cavity 22, so that sea water desalination is completed.

In the preferred embodiment, each heating chamber 1 is correspondingly provided with an optical component 3, the optical component 3 comprises one or more convex lenses, and the optical component 3 is arranged at the top of the heating chamber 1. The convex lens is utilized to focus sunlight, the structure is simple, and the installation is easy. The provision of a plurality of convex lenses allows more focused energy than one convex lens. And once the convex lens is aged or broken, other convex lenses can still maintain the normal operation of the sea water desalination device. The optical component 3 is arranged at the top of the heating bin 1, so that a focus is positioned in the heating bin 1, and the heating efficiency of the heating bin 1 is improved. In this embodiment, be provided with 4 convex lenses above the heating storehouse 1, 4 convex lenses simultaneous working can effectively promote sea water heating efficiency. Of course, in other embodiments, the number of convex lenses may be other values, such as 3, 5, etc.

In a preferred embodiment, an angle adjustment device is also included. The angle adjusting means includes a photosensor 81, a controller, and a driving mechanism 82. The controller is electrically connected with the photosensitive sensor 81 and the driving mechanism 82 respectively, and the controller is used for controlling the driving mechanism 82 to adjust the included angle between the optical component 3 and the horizontal plane according to signals transmitted by the photosensitive sensor 81.

The photosensor 81 is a sensitive device having a response or conversion function to an external optical signal or optical radiation. The photosensor 81 may be a photocell, photomultiplier tube, photoresistor, phototransistor, solar cell, infrared sensor, ultraviolet sensor, fiber optic photosensor, color sensor, CCD, CMOS image sensor, etc. In short, as long as it is an original capable of converting an optical signal into an electrical signal, it is within the scope of the present embodiment. The drive mechanism 82 may be a motor drive mechanism 82 or a pneumatic drive mechanism 82. Preferably, the drive mechanism 82 is a servo motor. The servo motor can control the speed, the position accuracy is very accurate, and the voltage signal can be converted into torque and rotating speed to drive the optical component 3.

When the optical module 3 is fixedly arranged on the sea water desalination device, sunlight can be focused on a point only at a specific angle without moving the optical module 3. When the solar energy is directly irradiated in noon, the focusing effect of the horizontally arranged optical component 3 is optimal, and when the optical component 3 is obliquely irradiated by the sun, the focusing effect of the optical component 3 is poor, and the effect of converting light energy into heat energy is greatly reduced. Therefore, an angle adjusting device is required to adjust the included angle between the optical component 3 and the horizontal plane, so that the optical component 3 can better focus the solar rays and convert the solar energy into heat energy.

In the present embodiment, both sides of the optical assembly 3 are provided with the photosensitive sensors 81, and a servo motor is provided beside the optical assembly 3. The photo sensors 81 are provided on both sides of the optical assembly 3, and can more accurately detect a solar light signal. When the light condition is not good, only the photosensor 81 on one side can sense the light signal, and the photosensor 81 on the other side cannot receive the light signal or receives a weak light signal. At this time, the controller in the servo motor adjusts the included angle between the optical assembly 3 and the horizontal plane according to the electric signal transmitted by the photosensitive sensor 81, so that the sun rays can directly irradiate the light-receiving surface of the optical assembly 3. So set up, according to the contained angle of solar ray adjustment optical component 3 and horizontal plane, improve the optical component 3 and turn the efficiency of light energy into heat energy.

In a second aspect of the application there is also provided a seawater desalination system comprising a plurality of seawater desalination plants, liquid extraction apparatus, liquid storage apparatus as in the first aspect. The liquid pumping equipment is respectively communicated with the water outlets of the liquid collecting cavities 222 of the sea water desalination devices and is used for pumping liquid in the liquid collecting cavities 222 of the sea water desalination devices. The liquid storage device is used for storing liquid extracted by the liquid extracting device.

The water pumping device 7 may be a centrifugal pump, a jet pump, an air compressor, a deep well pump, etc., and is within the scope of the present embodiment as long as it can pump the liquid collected by the liquid collecting chamber 222

The application utilizes the sea water desalting device provided by the first aspect to desalt sea water: the solar energy is utilized to generate heat energy, and the sunlight is focused on a thin film evaporation tray in the evaporation cavity through the optical component to generate high-temperature seawater. The principle of vacuum film evaporation is utilized to make sea water evaporate and condense to produce fresh water.

The working principle is as follows: the heating bin is internally provided with a first outer cavity and a first inner cavity. The liquid in the first lumen is heated. The vacuum bin is internally provided with a second outer cavity and a second inner cavity, and the second outer cavity and the second inner cavity are sealed and isolated. The second outer cavity is provided with a water inlet, and is immersed in seawater in the sea to exchange heat with the seawater, so that the temperature of the second outer cavity is basically kept similar to that of the seawater. The second inner cavity comprises an evaporation cavity and a liquid collecting cavity, the liquid collecting cavity is arranged between the evaporation cavity and the second outer cavity, and a water outlet is formed in the liquid collecting cavity. The second outer cavity is communicated with the first outer cavity through a first conduit, and seawater with high temperature generated in the first inner cavity is communicated with the second inner cavity through a second conduit. Under the vacuum environment, the high-temperature seawater enters the second inner cavity to be gasified rapidly to generate water vapor, and the water vapor contacts the second outer cavity cooled by the seawater to be condensed into water drops, and flows to the liquid collecting cavity along the side wall of the second outer cavity to be collected. And the non-evaporated concentrated seawater in the second inner cavity flows into the collecting cavity below through the throttle hole and is discharged into the sea under the action of the water pump. Finally, the liquid collected by each sea water desalination device is pumped to the liquid storage device by the liquid pumping device, and the liquid is concentrated and stored, so that the liquid collected by the sea water desalination devices is conveniently and uniformly taken.

It should be noted that, although the foregoing embodiments have been described herein, the scope of the present application is not limited thereby. Therefore, based on the innovative concepts of the present application, alterations and modifications to the embodiments herein, or equivalent structures or equivalent flow transformations made by the present description and drawings, apply the above technical solution, directly or indirectly, to other relevant technical fields, all of which are included in the scope of the application.

Claims

1. A seawater desalination plant, comprising:

the optical assembly is used for converting light energy into heat energy and heating liquid in the first inner cavity, each heating bin is correspondingly provided with an optical assembly, the optical assembly comprises one or more convex lenses, and the optical assembly is arranged at the top of the heating bin;

the vacuumizing device is communicated with the evaporating cavity and is used for vacuumizing the evaporating cavity;

2. A seawater desalination plant as claimed in claim 1, wherein the evacuating means comprises:

3. A seawater desalination plant as claimed in claim 2, further comprising:

4. A seawater desalination plant as claimed in claim 2, further comprising:

5. A seawater desalination plant as claimed in claim 1, further comprising:

6. A desalination apparatus as claimed in claim 1 wherein the inner surface of the second chamber is spherical or arcuate.

7. A seawater desalination plant as claimed in claim 1, further comprising:

the angle adjusting device comprises a photosensitive sensor, a controller and a driving mechanism; the controller is respectively and electrically connected with the photosensitive sensor and the driving mechanism, and the controller is used for controlling the driving mechanism to adjust the included angle between the optical assembly and the horizontal plane according to signals transmitted by the photosensitive sensor.

8. A seawater desalination system, comprising:

a plurality of desalination plants as defined in any one of claims 1 to 7;