CN206562314U - A kind of bubble type solar energy sea water desalination apparatus - Google Patents

Abstract

The utility model discloses a kind of bubble type solar energy sea water desalination apparatus, sea water desalinating unit includes solar thermal collector, vaporization chamber, bubbler, condensation chamber, fresh-water tank, cooler bin and solar energy photovoltaic panel；Solar energy photovoltaic panel is connected by battery with bubbling machine, and solar thermal collector is connected by heat-exchanger pump with vaporization chamber, and vaporization chamber upper end is connected with the steam inlet of condensation chamber；The delivery port of condensation chamber is connected with fresh-water tank, and the gas outlet of condensation chamber is connected by air blower with bubbler, and bubbler is installed on the bottom surface of vaporization chamber；Cooler bin is connected by heat exchanger tube with condensation chamber；There is condensation chamber in condensation chamber, condensation chamber is provided with heat exchanger plates, one end of adjacent two heat exchanger plates is individually fixed in the both sides inwall of condensation chamber so that the condensation channel of condensation chamber formation alternating bending, one end insertion condensation channel of heat exchanger tube, the side for the heat exchanger plates that the side wall of heat exchanger tube is close to.Efficiency that is of the present utility model simple in construction, easy for installation and improving desalinization.

Description

A bubbling solar seawater desalination device

technical field

The utility model relates to seawater desalination technology, in particular to a bubbling solar seawater desalination device.

Background technique

With the shortage of fresh water resources, seawater desalination technology has been paid more and more attention by various countries. At present, many countries have taken seawater desalination as a key technology to solve the problem of fresh water shortage.

Seawater desalination is the process of separating the salt and water in seawater, and finally obtain fresh water and concentrated brine. The main traditional seawater desalination methods include distillation, reverse osmosis, electrodialysis, freezing, hydrate and solvent extraction. . Among them, the reverse osmosis method uses the difference in the solubility of water and salts in the molecular lattice gaps in the semipermeable membrane to separate them; the distillation method uses the different boiling points of the components in seawater to achieve the separation of water and salt components. At present, the distillation method has achieved industrial production, but the traditional distillation method has high energy consumption, low economic benefits, complex structure of seawater desalination equipment, difficult operation, large seawater corrosion and low heat transfer efficiency. The reverse osmosis method has gradually replaced the distillation method as the most widely used technology in the seawater desalination market due to its simple equipment structure and easy maintenance.

The bubbling solar seawater desalination technology uses solar energy as energy and uses the principle of humidification and dehumidification to desalinate seawater. The basic idea is to use air to pass into hot seawater to form bubbles, and absorb the heat of seawater and evaporated water vapor during the rising process of the bubbles, which is the humidification process; collect water vapor and condense to obtain fresh water, which is the dehumidification process . But the current bubbling solar seawater desalination technology still has many defects.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the prior art above, and provide a bubbling solar seawater desalination device with simple structure, convenient installation and good desalination effect.

In order to achieve the above object, the utility model adopts the following technical solutions: a bubbling solar seawater desalination device, including a solar heat collector, an evaporation chamber, a bubbler, a blower, a condensation chamber, a fresh water tank, a cooling box, a storage battery and a solar energy Photovoltaic panel; the solar photovoltaic panel is connected to the storage battery, the storage battery is connected to the blower, the solar heat collector is connected to the evaporation chamber through the hot water pump, and the upper end of the evaporation chamber is connected to the steam inlet of the condensation chamber; the condensation chamber The water outlet is communicated with the fresh water tank, and the air outlet of the condensation chamber is connected with a bubbler through a blower, and the bubbler is installed on the bottom surface of the evaporation chamber; the cooling box is connected with the condensation chamber through a heat exchange tube;

The condensing chamber has a condensing chamber, and the condensing chamber is provided with a plurality of heat exchange plates, and the ends of two adjacent heat exchange plates are respectively fixed on the inner walls of both sides of the condensing chamber so that the condensing chamber forms a repeatedly curved condensing channel. One end of the heat exchange tube is inserted into the condensation channel, and the side wall of the heat exchange tube is in close contact with the side of the heat exchange plate.

Preferably, the level of the bottom surface of the condensing chamber decreases gradually from the steam inlet of the condensing chamber along the direction of the water outlet of the condensing chamber.

Preferably, the evaporation chamber and the condensation chamber are integrally formed, and the fresh water tank is installed under the condensation chamber.

Preferably, the fresh water tank is installed under the condensation chamber through a drawer structure.

Preferably, the evaporation chamber, the condensation chamber and the fresh water tank are installed together in a rectangular parallelepiped shape.

Preferably, the bubbling solar seawater desalination device further includes a controller, and the solar heat collector includes a plurality of heat collecting tubes and an insulated water tank, and the multiple heat collecting tubes are all connected to the insulated water tank, and the insulated water tank is heated by a hot water pump It is connected with the evaporation chamber; a thermometer and a liquid level gauge are arranged in the moisturizing water tank, and both the thermometer and the liquid level gauge are connected with the controller; the controller is connected with the hot water pump.

Preferably, the evaporation chamber is provided with a water exchange mechanism, the water exchange mechanism includes a float level switch and a relay, the float level switch is installed on the side wall of the evaporation chamber, and the float level switch passes through The relay is connected with the controller.

Preferably, the bubbler includes at least 10 sets of bubble heads, all of which are evenly installed on the bottom surface of the evaporation chamber, and all of the bubble heads are connected to blowers.

A seawater desalination method based on the above-mentioned bubbling solar seawater desalination device is characterized in that it comprises the following steps:

1) The collected seawater is directly injected into the solar collector, and the solar collector directly heats the seawater to raise the temperature of the seawater to 85°C to 90°C;

2) The hot water pump pumps the seawater that has been heated up in the solar collector into the evaporation chamber. At this time, the blower is driven to make the bubbler generate bubbles at the bottom of the seawater in the evaporation chamber, and the bubbles rise and overflow from the bottom of the seawater in the evaporation chamber The seawater surface of the evaporation chamber forms steam, which then passes through the upper outlet of the evaporation chamber and the steam inlet of the condensation chamber in turn, and then enters the condensation chamber of the condensation chamber;

3) The steam entering the condensing chamber exchanges heat with the cooling box through the heat exchange tube, and the steam cools down rapidly, and the fresh water in the steam is separated from the gas, and the separated fresh water flows into the fresh water tank from the water outlet of the condensing chamber, and the separated gas It is drawn out from the air outlet of the condensation chamber by the blower and sent to the bubbler again.

Compared with the prior art, the utility model has the following advantages and effects:

1. The utility model mainly adopts solar collectors, evaporation chambers, bubblers, condensation chambers, fresh water tanks, cooling tanks, batteries and solar photovoltaic panels, wherein the condensation chambers in the condensation chambers use heat exchange plates to form condensation channels, which The dehumidification effect of steam is improved, that is, the effect of water and gas separation is improved, thereby improving the effect of seawater desalination.

2. The utility model uses solar heat collectors to heat seawater, and then combines bubbling gas for bubbling to accelerate the evaporation of seawater, so as to improve the humidification process of the gas, thereby improving the evaporation efficiency of seawater, and improving the effect of seawater desalination .

3. The heat exchange plate of the present invention is alternately fixed on the two inner walls of the condensation chamber in the condensation chamber to form a repeatedly curved condensation channel, which can prolong the heat exchange time between the steam and the heat exchange plate, and the cooling box passes through the heat exchange The tubes provide sufficient cooling capacity for the heat exchange plate, so the dehumidification effect of the steam can be further improved, so as to further improve the effect of seawater desalination.

4. In the utility model, the evaporation chamber and the condensation chamber form a gas circuit through the blower, that is, the gas separated in the condensation chamber is extracted again to the bubbler at the bottom of the evaporation chamber through the blower, which makes it easy for the condensation chamber to form a negative pressure to speed up the evaporation of steam. flow to further increase the efficiency of desalination.

Description of drawings

Fig. 1 is a structural schematic diagram of a bubbling solar desalination device of the present invention.

Fig. 2 is a sectional view of a bubbling solar desalination device of the present invention.

Fig. 3 is a schematic diagram of the connection of the evaporation chamber, the blower, the condensation chamber and the fresh water tank of the utility model. The arrows in the figure indicate the flow direction of water vapor or fresh water or gas.

Fig. 4 is a schematic diagram of the connection of the evaporation chamber, the condensation chamber, the fresh water tank and the cooling tank of the utility model. The arrows in the figure indicate the flow direction of water vapor or fresh water or gas.

detailed description

For the convenience of those skilled in the art to understand, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 to 3, the bubbling solar seawater desalination device includes a solar heat collector 1, an evaporation chamber 2, a bubbler 3, a blower 4, a condensation chamber 5, a fresh water tank 6, a cooling tank 7, and a battery 8 and a solar photovoltaic panel 9; the solar photovoltaic panel 9 is connected to a storage battery 8, the storage battery 8 is connected to a blower 4, the solar heat collector 1 is connected to the evaporation chamber 2 through a hot water pump, and the upper end of the evaporation chamber 2 is connected to the condensation chamber The steam inlet of the chamber 5 is connected; the water outlet of the condensation chamber 5 is connected with the fresh water tank 6, and the air outlet of the condensation chamber 5 is connected with the bubbler 3 through the blower 4, and the bubbler 3 is installed in the evaporation chamber 2 The bottom surface of the bottom surface; the cooling box 7 is connected to the condensation chamber 5 through the heat exchange tube 10; the condensation chamber 5 has a condensation cavity, and the condensation cavity is provided with a plurality of heat exchange plates 11, and two adjacent heat exchange plates 11 One end of the heat exchange tube 10 is respectively fixed to the inner walls of both sides of the condensation chamber 5 so that the condensation chamber forms a repeatedly curved condensation channel 12, one end of the heat exchange tube 10 is inserted into the condensation channel 12, and the side wall of the heat exchange tube 10 is close to the heat exchanger side of the hot plate 11.

The above-mentioned structure is simple, convenient for installation and high in reliability. Specifically, the seawater heated in the solar heat collector 1 is pumped by the hot water pump, and the seawater is injected into the evaporation chamber 2 from the bottom of the evaporation chamber 2 . The air delivered by the blower 4 flows through the bubbler 3 to form bubbles and directly contacts with the hot seawater provided by the solar collector 2 to generate water vapor. The water vapor flows through the condensation chamber 5 and the separated fresh water is collected in the fresh water tank 6. The gas separated from the chamber 5 is pumped by the blower 4 and sent to the bubbler 3 located in the evaporation chamber 2 for the next step of circulation. As shown in Figure 2 and Figure 4, multiple heat exchange plates 11 are provided in the condensation chamber 5, and one end of the adjacent heat exchange plates 11 is respectively fixed on the inner walls of both sides of the condensation chamber 5, that is, multiple heat exchange plates 11 are distributed alternately, To make the condensation chamber form a repeatedly curved condensation channel 12, which makes the water vapor flow through a longer distance in the condensation chamber 5, so that the heat exchange between the water vapor and the heat exchange plate 11 is sufficient, and the fresh water and gas in the water vapor are improved. The separation efficiency, thereby improving the efficiency of seawater desalination.

The level of the bottom surface of the condensation chamber 5 gradually decreases from the steam inlet of the condensation chamber 5 along the direction of the water outlet of the condensation chamber 5 . This setting can allow the separated fresh water to flow into the fresh water tank 6 smoothly, and avoid the separated fresh water remaining on the bottom surface of the condensation chamber 5 . At the same time, the bottom surface of the condensation chamber is inclined, which can make the separated fresh water and the separated gas flow non-interfering and improve the recovery rate of fresh water.

The evaporation chamber 2 and the condensation chamber 5 are integrally formed, and the fresh water tank 6 is installed under the condensation chamber 5 . And the evaporation chamber 2, the condensation chamber 5 and the fresh water tank 6 are installed together in a cuboid shape. This design has a compact structure and is easy to install, which can reduce the volume of the whole device. In order to further ensure the compactness of the structure, the evaporation chamber 2, the condensation chamber 5 and the fresh water tank 6 are all installed above the fixed bracket 13.

The fresh water tank 6 is installed under the condensation chamber 5 through a drawer structure. This structure can take out fresh water tank 6 conveniently, promptly when fresh water tank 6 is full of fresh water, can conveniently take out and these fresh waters are poured into corresponding container, also made things convenient for the cleaning of fresh water tank simultaneously. Specifically, slide bars are provided on both sides of the fresh water tank 6, and a chute is provided on the outer wall of the evaporation chamber 2 and an inner side of the lower end of the condensation chamber 5. Below chamber 5, this structure is also taken out as the installation of convenient fresh water tank as drawer.

The bubbling solar desalination device also includes a controller, the solar heat collector 1 includes a plurality of heat collecting tubes 101 and an insulated water tank 102, and the plurality of heat collecting tubes 101 are connected with the insulated water tank 102, and the insulated water tank 102 It is connected with the evaporation chamber 2 through a hot water pump; a thermometer and a liquid level gauge are arranged in the moisturizing water tank 102, and both the thermometer and the liquid level gauge are connected with the controller; the controller is connected with the hot water pump. The evaporation chamber 2 is provided with a water exchange mechanism 14, the water exchange mechanism 14 includes a float level switch and a relay, the float level switch is installed on the side wall of the evaporation chamber, and the float level switch passes through The relay is connected with the controller. Specifically, the controller is mainly composed of PLC or single-chip microcomputer, and timely controls the start-up of the hot water pump and relay through the feedback of the thermometer, liquid level gauge and float level switch, so as to automatically control the discharge and injection of seawater in the evaporation chamber. The reliability of the work is guaranteed. Specifically, the float level switch and the relay can be purchased directly from the market, which facilitates the manufacture of the seawater desalination device.

The bubbler 3 includes at least 10 sets of bubble heads 301 , all the bubble heads 301 are evenly installed on the bottom surface of the evaporation chamber 2 , and all the bubble heads 301 are connected to the blower 4 . Specifically, the bubbler in this embodiment has 30 sets of bubble heads 301 , and these bubble heads 301 are evenly installed on the bottom surface of the evaporation chamber 2 to ensure uniform bubble generation and accelerate the evaporation of seawater in the evaporation chamber 2 .

A seawater desalination method based on the above-mentioned bubbling solar seawater desalination device is characterized in that it comprises the following steps:

1) The collected seawater is directly injected into the solar collector, and the solar collector directly heats the seawater to raise the temperature of the seawater to 85°C to 90°C;

2) The hot water pump pumps the seawater that has been heated up in the solar collector into the evaporation chamber. At this time, the blower is driven to make the bubbler generate bubbles at the bottom of the seawater in the evaporation chamber, and the bubbles rise and overflow from the bottom of the seawater in the evaporation chamber The seawater surface of the evaporation chamber forms steam, which then passes through the upper outlet of the evaporation chamber and the steam inlet of the condensation chamber in turn, and then enters the condensation chamber of the condensation chamber;

3) The steam entering the condensing chamber exchanges heat with the cooling box through the heat exchange tube, and the steam cools down rapidly, and the fresh water in the steam is separated from the gas, and the separated fresh water flows into the fresh water tank from the water outlet of the condensing chamber, and the separated gas It is drawn out from the air outlet of the condensation chamber by the blower and sent to the bubbler again.

This heats the seawater to an appropriate temperature through the heat of the solar collector, combined with the function of the bubbler to accelerate the evaporation of the seawater in the evaporation chamber and improve the humidification efficiency; and the blower pumps the gas in the condensation chamber to the evaporation chamber to make the condensation chamber generate The negative pressure speeds up the flow of gas between the evaporation chamber and the condensation chamber, and improves the dehumidification efficiency, so the seawater desalination efficiency of the whole device can be greatly improved.

The specific implementation described above is a preferred embodiment of the utility model, and does not limit the utility model. Any other changes or other equivalent replacement methods that do not deviate from the technical solution of the utility model are included in the utility model. within the scope of the new protection.

Claims (8)

1. A bubbling solar seawater desalination device is characterized in that: comprising a solar heat collector, an evaporation chamber, a bubbler, a blower, a condensation chamber, a fresh water tank, a cooling box, a storage battery and a solar photovoltaic panel; The board is connected to the battery, the battery is connected to the blower, the solar heat collector is connected to the evaporation chamber through the hot water pump, the upper end of the evaporation chamber is connected to the steam inlet of the condensation chamber; the water outlet of the condensation chamber is connected to the fresh water tank, The air outlet of the condensation chamber is connected to the bubbler through the blower, and the bubbler is installed on the bottom surface of the evaporation chamber; the cooling box is connected to the condensation chamber through a heat exchange tube; The condensing chamber has a condensing chamber, and the condensing chamber is provided with a plurality of heat exchange plates, and the ends of two adjacent heat exchange plates are respectively fixed on the inner walls of both sides of the condensing chamber so that the condensing chamber forms a repeatedly curved condensing channel. One end of the heat exchange tube is inserted into the condensation channel, and the side wall of the heat exchange tube is in close contact with the side of the heat exchange plate. 2 . The bubbling solar seawater desalination device according to claim 1 , wherein the horizontal height of the bottom surface of the condensing chamber gradually decreases from the steam inlet of the condensing chamber along the direction of the water outlet of the condensing chamber. 3 . 3. The bubbling solar seawater desalination device according to claim 1, characterized in that: the evaporation chamber and the condensation chamber are integrally formed, and the fresh water tank is installed under the condensation chamber. 4. The bubbling solar seawater desalination device according to claim 3, wherein the fresh water tank is installed under the condensation chamber through a drawer structure. 5. The bubbling solar seawater desalination device according to claim 1, characterized in that: the evaporation chamber, the condensation chamber and the fresh water tank are installed together in a cuboid shape. 6. The bubbling solar seawater desalination device according to claim 1, characterized in that: it also includes a controller, and the solar heat collector includes a plurality of heat collecting tubes and an insulated water tank, and a plurality of heat collecting tubes are connected with the insulated water tank , the heat preservation water tank is connected to the evaporation chamber through a hot water pump; a thermometer and a liquid level gauge are arranged in the heat preservation water tank, and both the thermometer and the liquid level gauge are connected to the controller; the controller is connected to the heat water pump. 7. The bubbling solar seawater desalination device according to claim 6, characterized in that: the evaporation chamber is provided with a water exchange mechanism, the water exchange mechanism includes a float level switch and a relay, and the float liquid The level switch is installed on the side wall of the evaporation chamber, and the float level switch is connected with the controller through a relay. 8. The bubbling solar seawater desalination device according to claim 1, characterized in that: said bubbler comprises at least 10 groups of bubbling heads, all of which are evenly installed on the bottom surface of the evaporation chamber, And all the bubbling heads are connected with blowers.