CN215667223U

CN215667223U - Heat-collecting solar seawater desalination system

Info

Publication number: CN215667223U
Application number: CN202121773099.0U
Authority: CN
Inventors: 符逸锋
Original assignee: Shangyang Energy Storage Beijing Technology Co ltd
Current assignee: Shenzhen Shangyang Energy Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-01-28
Anticipated expiration: 2031-07-30

Abstract

The application relates to a heat-collecting solar seawater desalination system, which belongs to the field of water treatment and comprises a seawater pool; the glass cover plate is obliquely arranged at the top end of the seawater pool; the heat exchange coil is arranged in the seawater pool, and a first joint and a second joint are respectively arranged at two ends of the heat exchange coil; the medium pipeline is detachably connected with two ends of the heat exchange coil to form a circulating loop; the solar heat collector, the medium pump and the first switch valve are respectively arranged on the medium pipeline; through setting up heat exchange coil and through the medium pipeline, utilize solar collector to the medium heating in the medium pipeline, the medium after the heating carries out the heat exchange with the sea water in the sea water pond, realizes the sea water heating in the sea water pond to cooperation glass apron radiation sunlight heats it again, and the sea water heats through two aspects, can increase its speed of sending out, accelerates the sea water desalination process, shortens the cycle of sea water desalination.

Description

Heat-collecting solar seawater desalination system

Technical Field

The utility model relates to the field of water treatment, in particular to a heat-collecting solar seawater desalination system.

Background

Fresh water is one of basic substances which human beings rely on for survival and development, the ocean covers about 70% of the surface area of the earth, the seawater accounts for 97% of the total water content of the earth, and the rest fresh water only accounts for less than 3% of the total water content of the earth. However, not only does fresh water account for such a small proportion, but also the distribution is extremely uneven, and about 90% of fresh water is frozen in glaciers in the north and south poles of the earth and in alpine regions, and therefore, fresh water that can be directly used by humans is less than about 0.3% of the total amount of fresh water on the earth. Therefore, the desalination of seawater is of great significance. The existing seawater desalination methods mainly comprise a distillation method, a reverse osmosis membrane method, an electrodialysis method and the like, wherein the distillation method is widely applied due to the advantages of simple structure and easy realization. The seawater desalination system of the solar distillation system in the distillation method can operate independently and is widely applied due to the advantages of no limitation of steam, electric power and the like, no pollution and low energy consumption. The existing seawater desalination system utilizing a solar distillation system generally adopts the process that a glass cover plate is arranged above a seawater pool, sunlight irradiates on the glass cover plate, so that the temperature in the seawater pool rises, seawater is evaporated, and fresh water is condensed on the glass cover plate. However, the evaporation rate of seawater in the above distillation system is too slow, so that the whole period of desalination is too long.

SUMMERY OF THE UTILITY MODEL

The application is in order to solve current solar energy desalination system and mainly set up confined glass apron above the sea water pond, utilize the solar energy of glass apron radiation to make the sea water temperature rise, and then the condensation is the too slow problem of this kind of mode sea water evaporation rate of fresh water, because the sunlight heat of glass apron radiation is limited all the time, therefore, the cycle overlength of above-mentioned mode sea water desalination, this application designs a heat gathering solar energy desalination system, its sea water desalination is fast, and whole sea water desalination equipment is more small-size, especially can use alone on less boats and ships or some ocean drilling construction places and the use of less specific places such as mariculture, the technical scheme of its concrete adoption is:

a concentrated thermal solar seawater desalination system comprising:

the seawater pool is used for containing seawater;

the glass cover plate is obliquely arranged at the top end of the seawater pool and used for sealing the seawater pool;

the heat exchange coil is arranged in the seawater pool, and a first joint and a second joint are respectively arranged at two ends of the heat exchange coil;

the medium pipeline is detachably connected with two ends of the heat exchange coil to form a circulating loop;

the solar heat collector, the medium pump and the first switch valve are respectively arranged on the medium pipeline.

Preferably, at least two first switch valves are provided, and the two first switch valves are connected to the medium pipeline close to the first joint and the second joint correspondingly.

Preferably, the method further comprises the following steps:

one end of the liquid pumping pipeline is connected with the medium pipeline, and the other end of the liquid pumping pipeline is connected with a liquid storage tank;

and the second switch valve is arranged on the liquid pumping pipeline.

Preferably, the solar heat collector comprises a light collecting plate and a heat collecting pipe, the light collecting plate is mounted on the upper side of the heat collecting pipe, and the light collecting plate is provided with a refraction surface, so that light rays are refracted to the heat collecting pipe through the light collecting plate.

Preferably, the heat exchange coil is S-shaped and is horizontally arranged in the seawater pool.

Preferably, the seawater pool is internally provided with a partition board, the partition board divides the seawater pool into a first accommodating cavity and a second accommodating cavity, the glass cover plate cover is arranged at the top end of the first accommodating cavity, the first accommodating cavity is used for accommodating seawater, and the second accommodating cavity is used for accommodating cleaning liquid for cleaning the heat exchange coil.

Preferably, the second holds the intracavity and still is equipped with the crane, and the crane is used for holding heat transfer coil pipe, and the crane drives heat transfer coil pipe and transfers to below the washing liquid level and promote to above the washing liquid level.

Preferably, the crane comprises:

a bracket;

the telescopic cylinder is arranged on the inner wall of the second containing cavity corresponding to the seawater pool, and the telescopic rod end of the telescopic cylinder is connected with the bracket.

Preferably, still can dismantle on the heat transfer coil and be equipped with ultrasonic vibrator, when the crane drives heat transfer coil and descends to washing liquid level below, ultrasonic vibrator sets up in heat transfer coil, and when the crane drove heat transfer coil and rises to washing liquid level above, ultrasonic vibrator breaks away from heat transfer coil.

Preferably, a PH detector is further disposed in the second accommodating chamber and used for detecting a PH value of the cleaning solution.

The utility model utilizes the solar heat collector to heat the medium in the medium pipeline by arranging the heat exchange coil pipe and the medium pipeline, the heated medium exchanges heat with the seawater in the seawater pool to realize the heating of the seawater in the seawater pool, and the glass cover plate is matched to radiate sunlight to heat the seawater again, the seawater is heated in two aspects, the rate of the seawater increase can be increased, the seawater desalination process is accelerated, and the seawater desalination period is shortened.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of a sea chest;

FIG. 3 is a schematic structural view of the lifting frame in the second accommodating cavity;

FIG. 4 is a schematic structural view of a solar collector;

FIG. 5 is a schematic view of a light collector panel;

FIG. 6 is an enlarged view taken at I in FIG. 5;

fig. 7 is an enlarged view at II in fig. 5.

In the figure, 1, a solar heat collector, 101, a heat collecting pipe, 102, a light collecting plate, 102a, a refraction surface, 2, a medium pipeline, 3, a medium pump, 4, a first switch valve, 5, a heat exchange coil pipe, 6, a first joint, 7, a second joint, 8, a seawater pool, 9, a glass cover plate, 10, a second switch valve, 11, a liquid pumping pipeline, 12, a liquid storage tank, 13, seawater, 14, a lifting frame, 1401, a telescopic cylinder, 1402, a bracket, 15, a partition board, 16, a second accommodating cavity, 17, a first accommodating cavity, 18, a cleaning liquid, 19 and a PH detection meter.

Detailed Description

In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.

In addition, in the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate orientations and positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

As shown in fig. 1 to 7, the present application is a heat-concentrating solar seawater desalination system, which mainly comprises a seawater pool 8, a glass cover plate 9, a heat exchange coil 5, a medium pipeline 2, a solar heat collector 1, a medium pump 3, and a first switch valve 4.

The seawater pool 8 is used for containing seawater 13, and the seawater pool 8 is a seawater pool 8 with a small volume, can be arranged on a ship, an offshore drilling platform or the field of mariculture, and can directly provide required fresh water for ship or offshore drilling construction and the like.

Above-mentioned glass apron 9 slope sets up on the top of sea chest 8 for seal sea chest 8, glass apron 9 not only can see through the sunshine simultaneously, but also can be with sunlight heat radiation in sea water 13, and then rise sea water 13 temperature, and sea water 13 after the temperature rise constantly evaporates and is in glass apron 9 department condensation, and the fresh water after the condensation is concentrated the drainage and is stored along the glass apron 9 of slope.

However, in addition to the above, in addition to the way that the glass cover plate 9 radiates the sunlight to evaporate the seawater 13, the seawater 13 is heated by the heat exchange coil 5, and the seawater 13 is heated by two ways of heating the seawater 13 and matching with the heat energy of the sunlight radiated by the glass cover plate 9, so that the evaporation amount and the evaporation speed of the seawater 13 can be increased, and the speed of desalinating the seawater 13 can be increased. The heat exchange coil 5 is arranged in the seawater pool 8, and particularly, the heat exchange coil 5 is arranged below the seawater surface in the seawater pool 8, so that the heat exchange surface of the heat exchange coil 5 can be completely contacted with seawater 13, heat exchange is carried out on all heat, and heat waste is avoided. In addition, a first joint 6 and a second joint 7 are respectively arranged at two ends of the heat exchange coil 5, the first joint 6 and the second joint 7 are correspondingly detachably connected with the medium pipeline 2, specifically, the first joint 6 and the second joint 7 can be traditional flange connectors, the medium pipeline 2 matched with the first joint 6 and the second joint 7 is also provided with flange ends connected with the first joint 6 and the second joint 7, and the two are connected through bolts.

Or the first joint 6 and the second joint 7 may be threaded sleeves, the threaded sleeves are disposed at the end portions of the heat exchange coil 5, and the threaded sleeves are in threaded connection with the medium pipeline 2, so that the heat exchange coil 5 is connected with the medium pipeline 2.

The medium pipeline 2 is connected with the heat exchange coil 5 to form a circulation loop for medium circulation, and the medium pipeline 2 is also connected with a solar heat collector 1, a medium pump 3 and a first switch valve 4. The solar heat collector 1 can heat the medium in the medium pipeline 2, the heated medium exchanges heat with the seawater 13 and then flows back to the solar heat collector 1 through the medium pump 3 to be heated again, and the seawater 13 can be continuously evaporated to desalt the seawater 13 by continuous circulation.

Further, in an embodiment, the number of the first switch valves 4 is at least two, the two first switch valves 4 are connected to the medium pipeline 2 near the first joint 6 and the second joint 7, and the two first switch valves 4 are arranged to meet the requirement that the heat exchange coil 5 is connected to both ends of the medium pipeline 2 and detachably connected to both ends, because after the heat exchange coil 5 is detached from the medium pipeline 2, in order to prevent a large amount of medium in the medium pipeline 2 from flowing into the seawater pool 8, before the heat exchange coil 5 is detached from the medium pipeline 2, the two first switch valves 4 are closed, so that the medium in the medium pipeline 2 can be prevented from flowing into the seawater pool 8.

As for the above-mentioned medium, it can adopt heat conduction oil, can also adopt water, etc., mainly adopt the medium harmless to human body, non-toxic, the above-mentioned heat conduction oil mainly adopts edible oil, etc..

Further, besides the medium pipeline 2, the device also comprises a liquid pumping pipeline 11 and a second switch valve 10 arranged on the liquid pumping pipeline 11, wherein one end of the liquid pumping pipeline 11 is connected with the medium pipeline 2, and the other end is connected with a liquid storage tank 12. The liquid pumping pipeline 11 closes the two first switch valves 4 and opens the second switch valve 10 before the heat exchange coil 5 and the medium pipe are detached, and the medium in the medium pipeline 2 is pumped into the liquid storage tank 12 under the action of the medium pump 3, so that no medium exists in the medium pipeline 2, the heat exchange coil 5 and the medium pipeline 2 can be detached, and the medium can be reduced or even prevented from flowing into the seawater pool 8.

Further, the structure of the solar heat collector 1 specifically includes a light collecting plate 102 and a heat collecting pipe 101, as shown in fig. 4 to 7. The light collector plate 102 is mounted on the upper side of the heat collector tube 101, and the light collector plate 102 has a refraction surface 102a, so that light is refracted to the heat collector tube 101 through the light collector plate 102. The heat collecting tube 101 has a similar structure to a glass vacuum tube of an existing solar water heater, but is different in that a heating medium inside the glass vacuum tube of the solar water heater is water, and the heating medium in the present application is heat conducting oil. Meanwhile, the light collecting plate 102 is arranged on the upper side of the heat collecting pipe 101, the structure of the light collecting plate 102 is similar to that of a Fresnel lens, sunlight is focused on the heat collecting pipe 101 by the light collecting plate 102, the focused sunlight is high in temperature, the heating speed of the heat collecting pipe 101 is increased, the heat collecting efficiency is improved, heat conducting oil is rapidly heated, and the requirement of the heat exchange coil pipe 5 for large heat exchange area can be met.

Further, above-mentioned heat exchange coil 5 is the S type and buckles and the level sets up in sea water pond 8, and the heat exchange coil 5 that the S type was buckled can increase heat exchange coil 5' S length, increases the area of its heat transfer, still can not make it can not hold by sea water pond 8 because of heat exchange coil 5 increases its length because of a direction simultaneously.

Further, in one embodiment, the seawater pool 8 has a partition 15 therein, the partition 15 is vertically disposed in the seawater pool 8 to divide the seawater pool 8 into a first accommodating chamber 17 and a second accommodating chamber 16, and the glass cover plate 9 covers the top end of the first accommodating chamber 17. The upper end of the second accommodating cavity 16 can be open or can be closed through other components, the first accommodating cavity 17 is filled with seawater 13 to be desalinated, the second accommodating cavity 16 is filled with cleaning liquid 18, and the cleaning liquid 18 is used for cleaning scale on the outer surface of the heat exchange coil 5. Because the scale is continuously accumulated on the outer surface of the heat exchange coil 5, if the scale is too thick, the heat exchange efficiency between the heat exchange coil 5 and the seawater 13 is affected, so that the heat exchange of the medium is incomplete, the effect of heating the seawater 13 is reduced, and the process of desalting the seawater 13 cannot be promoted.

Further, when the heat exchange coil 5 is removed from the medium pipe and then placed in the second accommodating chamber 16 for cleaning, the heat exchange coil 5 can be placed in the cleaning solution 18 by arranging the crane 14 in the second accommodating chamber 16. The lifting frame 14 drives the heat exchange coil 5 to be lowered below the surface of the cleaning liquid 18 and lifted above the surface of the cleaning liquid 18. The process of manually replacing the heat coil 5 in the cleaning liquid 18 can be avoided, and manual participation is reduced. The crane 14 is provided because the height of the seawater pool 8 may be relatively high, and the liquid level of the cleaning liquid 18 in the second accommodating chamber 16 is relatively low, so that the heat exchange coil 5 cannot be directly placed into the cleaning liquid 18 by hands, and therefore, the heat exchange coil 5 needs to be placed into the cleaning liquid 18 by means of certain equipment. The lifting frame 14 plays a role in automatically and slowly putting the heat exchange coil 5 into the cleaning liquid 18.

Further, the crane 14 specifically includes a bracket 1402 and a telescopic cylinder 1401. The telescopic cylinder 1401 is arranged on the inner wall of the second accommodating cavity 16 corresponding to the seawater pool 8, the telescopic rod end of the telescopic cylinder 1401 is connected with the bracket 1402, and the bracket 1402 is horizontally arranged. Because the telescopic cylinder 1401 is simple in structure and easy to install, the lifting frame 14 is driven by the telescopic cylinder 1401 in the application.

Further, in an embodiment, the heat exchange coil 5 may further include an ultrasonic vibrator, the ultrasonic vibrator is disposed on the heat exchange coil 5 when the lifting frame 14 drives the heat exchange coil 5 to descend below the surface of the cleaning solution 18, and the ultrasonic vibrator is separated from the heat exchange coil 5 when the lifting frame 14 drives the heat exchange coil 5 to ascend above the surface of the cleaning solution 18. The cleaning liquid 18 is acid liquid, and the chemical descaling and the physical vibration of the ultrasonic vibrator jointly act in a physical mode of scale inhibition and shaking off, so that the thorough descaling of the heat exchange coil 5 is basically realized.

It should be noted that the ultrasonic vibrator is directly commercially available, and therefore, the structure thereof is a mature prior art, and therefore, the structure thereof will not be described in detail in this application.

In addition, in order to prevent the cleaning liquid 18 from entering the inside of the heat exchange coil 5 when the heat exchange coil 5 is cleaned, the two ends of the heat exchange coil 5 can be plugged when the heat exchange coil 5 is cleaned, and the two ends of the heat exchange coil 5 can be plugged by using rubber gaskets and separately designing and matching threaded end covers.

Further, a PH meter 19 is disposed in the second accommodating chamber 16 for measuring a PH value of the cleaning liquid 18, since after several uses of the cleaning liquid 18, a part of the acid liquid may be neutralized, which may cause an increase in the PH value, and in order to effectively descale the heat exchanging coil 5, after the PH meter 19 measures the PH value, a certain amount of acid liquid may be poured into the second accommodating chamber 16 according to the measured value, so as to maintain the PH value within a specific range.

The above-described embodiments should not be construed as limiting the scope of the utility model, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.

The present invention is not described in detail, but is known to those skilled in the art.

Claims

1. A concentrated heat solar seawater desalination system, comprising:

the seawater pool is used for containing seawater;

2. The concentrating solar seawater desalination system of claim 1, wherein at least two first on-off valves are provided, and the two first on-off valves are connected to the medium pipeline close to the first joint and the second joint respectively.

3. The concentrating solar seawater desalination system of claim 1 or 2, further comprising:

and the second switch valve is arranged on the liquid pumping pipeline.

4. The heat-collecting solar seawater desalination system of claim 1, wherein the solar heat collector comprises a light-collecting plate and a heat-collecting tube, the light-collecting plate is mounted on the upper side of the heat-collecting tube, and the light-collecting plate has a refraction surface, so that light is refracted to the heat-collecting tube through the light-collecting plate.

5. The heat-concentrating solar seawater desalination system of claim 1 or 4, wherein the heat exchange coil is S-shaped and horizontally arranged in the seawater pool.

6. The heat-concentrating solar seawater desalination system of claim 1, wherein the seawater pool is divided into a first accommodating chamber and a second accommodating chamber by a partition plate, the glass cover plate is covered on the top end of the first accommodating chamber, the first accommodating chamber is used for containing seawater, and the second accommodating chamber is used for containing cleaning solution for cleaning the heat exchange coil.

7. The heat-collecting solar seawater desalination system of claim 6, wherein the second accommodating cavity is further provided with a lifting frame, the lifting frame is used for accommodating the heat exchange coil, and the lifting frame drives the heat exchange coil to be lowered below a cleaning liquid level and lifted above the cleaning liquid level.

8. The concentrating solar seawater desalination system of claim 7, wherein the crane comprises:

a bracket;

9. The heat-collecting solar seawater desalination system of claim 8, wherein the heat exchange coil is detachably provided with an ultrasonic vibrator, the ultrasonic vibrator is arranged on the heat exchange coil when the lifting frame drives the heat exchange coil to fall below the cleaning liquid level, and the ultrasonic vibrator is separated from the heat exchange coil when the lifting frame drives the heat exchange coil to rise above the cleaning liquid level.

10. The concentrated solar seawater desalination system of claim 9, wherein a PH meter is further disposed in the second accommodating chamber for measuring a PH value of the cleaning solution.