CN104261499A - Seawater temperature difference energy natural circulation seawater desalting device and desalting method - Google Patents
Seawater temperature difference energy natural circulation seawater desalting device and desalting method Download PDFInfo
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- 239000013535 sea water Substances 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000011033 desalting Methods 0.000 title claims 5
- 239000007788 liquid Substances 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000013505 freshwater Substances 0.000 claims description 23
- 239000000284 extract Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 2
- 238000007701 flash-distillation Methods 0.000 claims 1
- 238000010612 desalination reaction Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 5
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000013082 photovoltaic technology Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/06—Flash evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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Abstract
一种海水温差能自然循环海水淡化装置及淡化方法，包括自然循环连通管、设有真空泵的闪蒸罐、冷凝器、设有水泵的储液罐、供电装置及连接管路，真空泵及水泵由供电装置供电，自然循环连通管的上部位于闪蒸罐内且下部通入海水面以下，闪蒸罐的底部具有通入海水面以下的开口，自然循环连通管通入海水面以下的深度大于所述闪蒸罐通入海水面以下的深度，利用表层温海水和深层冷海水间的密度差形成的浮升力作为驱动力，使得海水从闪蒸罐底部进入，从自然循环连通管流出，以形成自然循环，结构简单、节能效果显著。
A seawater temperature difference energy natural circulation seawater desalination device and desalination method, comprising a natural circulation connecting pipe, a flash tank equipped with a vacuum pump, a condenser, a liquid storage tank equipped with a water pump, a power supply device and connecting pipelines, the vacuum pump and the water pump are composed of The power supply device supplies power, the upper part of the natural circulation communication pipe is located in the flash tank and the lower part is opened below the sea surface, the bottom of the flash tank has an opening leading into the sea water surface, and the depth of the natural circulation communication pipe below the sea surface is greater than that of the flash tank. The tank penetrates into the depth below the sea surface, using the buoyancy force formed by the density difference between the surface temperature seawater and the deep cold seawater as the driving force, so that the seawater enters from the bottom of the flash tank and flows out from the natural circulation connecting pipe to form a natural circulation. Simple, remarkable energy-saving effect.
Description
技术领域technical field
本发明主要涉及海水淡化技术领域，尤其是指一种海水温差能自然循环海水淡化装置及淡化方法。The invention mainly relates to the technical field of seawater desalination, in particular to a seawater desalination device and a desalination method capable of natural circulation of seawater temperature difference.
背景技术Background technique
目前，随着人们对水资源需求的不断扩大，淡水资源缺乏问题逐渐凸显出来，现阶段世界上实现装机应用的海水淡化方法主要分为两大类：一是热处理过程，主要包括多级闪蒸(MSF)、多效蒸发(MED)；二是膜处理过程，如电渗析(ED)和反渗透(SWRO)。但是这两种方法都是以消耗电能或大量的燃料为代价的，随着能源的日益短缺，则会导致用这两种方法制备的淡水成本居高不下。因此寻求节能高效的造水方法途径势在必行。At present, with the continuous expansion of people's demand for water resources, the lack of fresh water resources has gradually become prominent. At this stage, the seawater desalination methods for installed applications in the world are mainly divided into two categories: one is the heat treatment process, which mainly includes multi-stage flash evaporation. (MSF), multiple effect evaporation (MED); the second is membrane treatment processes, such as electrodialysis (ED) and reverse osmosis (SWRO). But these two methods are all at the cost of consuming electric energy or a large amount of fuel. With the increasing shortage of energy, the cost of fresh water prepared by these two methods will remain high. Therefore, it is imperative to seek energy-saving and efficient water-making methods.
海洋温差能储量巨大，是国际社会公认的最具开发潜力的能源之一，海洋温差能是由于太阳的辐射使海水表层与底层形成温差而存储的能量，我国海域辽阔，且大部分处于热带和亚热带区域。大陆海岸线长达18000公里，海洋面积470多万平方公里，海洋能资源十分丰富，海洋温差能运含量约1.5亿kW。海洋温差能是清洁的可持续能源，利用海洋温差能进行海水淡化对缓解当前能源短缺、淡水资源日益匮乏、生态环境恶化的现状起着十分积极的作用。Ocean temperature difference energy reserves are huge, and it is one of the most potential energy sources recognized by the international community. Ocean temperature difference energy is the energy stored due to the temperature difference between the surface layer and the bottom layer of seawater due to solar radiation. my country has vast sea areas, and most of them are located in tropical and subtropical area. The coastline of the mainland is 18,000 kilometers long, and the ocean area is more than 4.7 million square kilometers. The ocean energy resources are very rich, and the ocean temperature difference can transport about 150 million kW. Ocean temperature difference energy is a clean and sustainable energy, and the use of ocean temperature difference energy for seawater desalination plays a very positive role in alleviating the current situation of energy shortage, freshwater resource scarcity, and ecological environment deterioration.
发明内容Contents of the invention
为克服上述现有技术中存有的缺陷，本发明的目的在于提供一种海水温差能自然循环海水淡化装置，该装置利用自然循环作为驱动力，结构简单，节能效果显著。In order to overcome the above-mentioned defects in the prior art, the object of the present invention is to provide a seawater desalination device capable of natural circulation of seawater temperature difference, which uses natural circulation as the driving force, has a simple structure, and has remarkable energy-saving effects.
为达到上述目的，本发明所采用的技术方案为：In order to achieve the above object, the technical scheme adopted in the present invention is:
一种海水温差能自然循环海水淡化装置，包括闪蒸罐、冷凝器、储液罐及连接管路，闪蒸罐、冷凝器、储液罐通过连接管路依次连接，闪蒸罐上连接有真空泵，储液罐上连接有水泵，该真空泵及水泵均由供电装置供电，还包括有自然循环连通管，所述闪蒸罐的底部具有开口且该开口通入海水面以下，所述自然循环连通管的上部位于所述闪蒸罐内且下部通入海水面以下，且所述自然循环连通管通入海水面以下的深度大于所述闪蒸罐通入海水面以下的深度。A seawater temperature difference energy natural circulation seawater desalination device, including a flash tank, a condenser, a liquid storage tank and a connecting pipeline, the flash tank, the condenser, and the liquid storage tank are connected in sequence through the connecting pipeline, and the flash tank is connected with A vacuum pump, a water pump is connected to the liquid storage tank, the vacuum pump and the water pump are powered by a power supply device, and a natural circulation connecting pipe is also included. The bottom of the flash tank has an opening and the opening leads below the sea surface. The upper part of the pipe is located in the flash tank and the lower part leads into the seawater surface, and the depth of the natural circulation communication pipe into the seawater surface is greater than the depth of the flash tank into the seawater surface.
由于闪蒸罐内设有自然循环连通管，且闪蒸罐的底部具有开口且该开口通入海水面以下，当采用真空泵对闪蒸罐进行抽真空时，可使闪蒸罐内具有一定的真空度，受气压差影响，海水会从闪蒸罐的底部开口进入闪蒸罐内，因自然循环连通管通入海水面以下的深度大于闪蒸罐通入海水面以下的深度，由于深层海水的温度低于表层海水的温度，因而深层海水的密度大于表层海水的密度，受密度差影响，闪蒸罐内的海水会通过自然循环连通管排出，以形成自然循环，即闪蒸罐内海水的补给是利用表层温海水与深层冷海水之间的密度差形成的浮升力来实现，结构简单，充分利用了海水的温差能，节能效果显著；再者，由于采用真空泵对闪蒸罐进行抽真空，使闪蒸罐内具有一定的真空度，因而不需要额外的加热设备对闪蒸罐内的海水进行加热即可完成闪蒸，节省能源。Since the flash tank is equipped with a natural circulation connecting pipe, and the bottom of the flash tank has an opening that leads below the sea level, when a vacuum pump is used to evacuate the flash tank, a certain vacuum can be achieved in the flash tank. Due to the influence of air pressure difference, seawater will enter the flash tank from the bottom opening of the flash tank, because the depth of the natural circulation connecting pipe into the sea surface is greater than the depth below the sea surface of the flash tank, because the temperature of deep seawater is low Due to the temperature of the surface seawater, the density of the deep seawater is greater than that of the surface seawater. Affected by the density difference, the seawater in the flash tank will be discharged through the natural circulation connecting pipe to form a natural circulation, that is, the replenishment of seawater in the flash tank is It is realized by using the buoyancy force formed by the density difference between the surface temperature seawater and the deep cold seawater. The structure is simple, the temperature difference energy of seawater is fully utilized, and the energy saving effect is remarkable; There is a certain degree of vacuum in the flash tank, so there is no need for additional heating equipment to heat the seawater in the flash tank to complete flash evaporation and save energy.
所述闪蒸罐的顶部为透明聚光罩，所述供电装置为太阳能电池，该太阳能电池位于闪蒸罐内且被放置于海水面上。透明聚光罩将汇聚后的太阳光通过高转化率的太阳能电池转换为电能，即通过聚光光伏技术将太阳能转化为电能，以供给真空泵、水泵使用，实现了装置的自给自足；且由于太阳能电池被密封放置在闪蒸罐内的海水面上，因而太阳能电池的底部会没入闪蒸罐内的海水内，因而可利用海水冷却太阳能电池，这样一方面可以解决太阳能电池的散热的问题，使得太阳能电池运行在最佳工况下，另一方面可以利用太阳能电池的这一部分热量加热闪蒸罐的海水，提高闪蒸罐产气量。The top of the flash tank is a transparent condensing cover, and the power supply device is a solar cell, and the solar cell is located in the flash tank and placed on the seawater surface. The transparent concentrating cover converts the concentrated sunlight into electrical energy through high-conversion solar cells, that is, converts solar energy into electrical energy through concentrating photovoltaic technology to supply vacuum pumps and water pumps, realizing the self-sufficiency of the device; and due to solar energy The battery is sealed and placed on the seawater in the flash tank, so the bottom of the solar cell will be submerged in the seawater in the flash tank, so the seawater can be used to cool the solar cell, which can solve the heat dissipation problem of the solar cell on the one hand, making The solar cells are running at the best condition. On the other hand, this part of the heat of the solar cells can be used to heat the seawater in the flash tank to increase the gas production of the flash tank.
所述储液罐上设有液位计。液位计用于计算显示储液罐内淡水的液位，当储液罐内的淡水达到一定液位时，启动水泵将储液罐内的淡水抽取运输到陆面上，即可根据液位计完成对储液罐内淡水的抽取，实现自动控制。A liquid level gauge is provided on the liquid storage tank. The liquid level gauge is used to calculate and display the liquid level of fresh water in the liquid storage tank. When the fresh water in the liquid storage tank reaches a certain level, start the water pump to pump and transport the fresh water in the liquid storage tank to the land, and then the water level can be adjusted according to the liquid level. The meter completes the extraction of fresh water in the liquid storage tank to realize automatic control.
一种海水温差能自然循环海水淡化方法，包括以下步骤：A.真空泵抽取闪蒸罐内的空气，使得海水进入闪蒸罐内进行闪蒸，获得水蒸气，且进入闪蒸罐内的海水会通过自然循环连通管排出，形成自然循环；B.水蒸气通过连接管路进入冷凝器内冷凝为淡水并储存在储液罐中。A seawater desalination method that can naturally circulate seawater temperature difference, comprising the following steps: A. The vacuum pump extracts the air in the flash tank, so that the seawater enters the flash tank for flash evaporation to obtain water vapor, and the seawater entering the flash tank will It is discharged through the natural circulation connecting pipe to form a natural circulation; B. Water vapor enters the condenser through the connecting pipe to condense into fresh water and store it in the liquid storage tank.
还包括有步骤：透明聚光罩将汇聚后的太阳光通过太阳能电池转换为电能，太阳能电池内的电能供真空泵和水泵使用。It also includes a step: the transparent concentrating cover converts the concentrated sunlight into electric energy through the solar cell, and the electric energy in the solar cell is used by the vacuum pump and the water pump.
还包括以下步骤：设定储液罐中淡水的输出液位数值，当储液罐中淡水的液位等于或大于该输出液位数值时，启动水泵，收集淡水。It also includes the following steps: setting the output liquid level value of the fresh water in the liquid storage tank, and starting the water pump to collect fresh water when the liquid level of the fresh water in the liquid storage tank is equal to or greater than the output liquid level value.
与以往技术相比，本发明所带来的有益效果有：Compared with the prior art, the beneficial effects brought by the present invention are:
1.闪蒸罐内海水的补给是利用表层温海水与深层冷海水之间的密度差形成的浮升力来实现，结构简单，充分利用了海水的温差能，节能效果显著；1. The replenishment of seawater in the flash tank is realized by using the buoyancy force formed by the density difference between the surface temperature seawater and the deep cold seawater. The structure is simple, and the temperature difference energy of seawater is fully utilized, and the energy saving effect is remarkable;
2.透明聚光罩将汇聚后的太阳光通过高转化率的太阳能电池转换为电能，以供给真空泵、水泵使用，即通过聚光光伏技术将太阳能转化为电能，实现了装置的自给自足；2. The transparent concentrating cover converts the concentrated sunlight into electrical energy through high-conversion solar cells to supply vacuum pumps and water pumps, that is, converts solar energy into electrical energy through concentrating photovoltaic technology, and realizes the self-sufficiency of the device;
3.闪蒸罐内具有一定的真空度，不需要额外的加热设备对闪蒸罐内的温海水进行加热即可完成闪蒸，节省能源；3. There is a certain degree of vacuum in the flash tank, and no additional heating equipment is required to heat the warm seawater in the flash tank to complete the flash evaporation, saving energy;
4.太阳能电池的热量可用于加热闪蒸罐内的海水，提高闪蒸罐产气量；4. The heat of solar cells can be used to heat the seawater in the flash tank to increase the gas production of the flash tank;
5.根据液位计控制水泵抽取淡化，实现自动化控制。5. According to the liquid level gauge, the water pump is controlled to extract and desalinate, so as to realize automatic control.
附图说明Description of drawings
图1为本发明实施例的结构示意图；Fig. 1 is the structural representation of the embodiment of the present invention;
附图标记：Reference signs:
1、透明聚光罩；2、太阳能电池；3、自然循环连通管；4、闪蒸罐；5、真空泵；6、冷凝器；7、储液罐；8、液位计；9、水泵；10、连接管路。1. Transparent condenser; 2. Solar battery; 3. Natural circulation connecting pipe; 4. Flash tank; 5. Vacuum pump; 6. Condenser; 7. Liquid storage tank; 8. Liquid level gauge; 9. Water pump; 10. Connect the pipeline.
具体实施方式Detailed ways
如图1所示，一种海水温差能自然循环海水淡化装置，包括太阳能电池2、自然循环连通管3、闪蒸罐4、真空泵5、冷凝器6、储液罐7、水泵9及连接管路10，闪蒸罐4、冷凝器6、储液罐7通过连接管路10依次连接，其中，闪蒸罐4的底部具有开口且该开口通入海水面以下，自然循环连通管3的上部位于闪蒸罐4内且下部通入海水面以下，且自然循环连通管3通入海水面以下的深度大于闪蒸罐4通入海水面以下的深度，闪蒸罐4的顶部为透明聚光罩1，太阳能电池2位于透明聚光罩1的下方，且该太阳能电池2位于闪蒸罐4内并被密封放置于海水面上，闪蒸罐4上连通有真空泵5，储液罐7上连通有水泵9，真空泵5及水泵9均与太阳能电池2连接并由透明聚光罩1、太阳能电池2供电。As shown in Figure 1, a seawater temperature difference energy natural circulation seawater desalination device includes a solar cell 2, a natural circulation connecting pipe 3, a flash tank 4, a vacuum pump 5, a condenser 6, a liquid storage tank 7, a water pump 9 and connecting pipes Road 10, the flash tank 4, the condenser 6, and the liquid storage tank 7 are connected sequentially through the connecting pipeline 10, wherein the bottom of the flash tank 4 has an opening and the opening leads below the sea surface, and the upper part of the natural circulation communication pipe 3 is located In the flash tank 4 and the lower part leads below the sea surface, and the depth of the natural circulation communication pipe 3 passing below the sea surface is greater than the depth of the flash tank 4 passing below the sea surface, the top of the flash tank 4 is a transparent concentrating cover 1, the solar energy The battery 2 is located under the transparent condenser cover 1, and the solar battery 2 is located in the flash tank 4 and is sealed and placed on the seawater surface. The flash tank 4 is connected with a vacuum pump 5, and the liquid storage tank 7 is connected with a water pump 9. Both the vacuum pump 5 and the water pump 9 are connected to the solar cell 2 and powered by the transparent condenser cover 1 and the solar cell 2 .
由于闪蒸罐4内设有自然循环连通管3，且闪蒸罐4的底部具有开口且该开口通入海水面以下，当采用真空泵5对闪蒸罐4进行抽真空时，可使得闪蒸罐4内具有一定的真空度，此处需说明的是，闪蒸罐4中的初始真空度由真空泵5来实现，以后真空泵5间隙工作，目的是定期抽取一些不凝性气体，保持闪蒸罐4的真空度，受气压差影响，海水会从闪蒸罐4的底部开口进入闪蒸罐4内，因自然循环连通管3通入海水面以下的深度大于闪蒸罐4通入海水面以下的深度，由于深层海水的温度低于表层海水的温度，因而深层海水的密度大于表层海水的密度，受密度差影响，闪蒸罐4内的海水会通过自然循环连通管3排出，以形成该装置的自然循环，即闪蒸罐4内海水的补给是利用表层温海水与深层冷海水之间的密度差形成的浮升力来实现，结构简单，充分利用了海水的温差能，节能效果显著；再者，由于采用真空泵5对闪蒸罐4进行抽真空，使闪蒸罐4内具有一定的真空度，因而不需要额外的加热设备对闪蒸罐4内的温海水进行加热即可完成闪蒸，节省能源。需要说明的是，本装置亦可采用锂电池等供电装置代替太阳能电池2和透明聚光罩1对装置进行供电，而由于太阳能电池2和透明聚光罩1可充分利用太阳能这一绿色能源，更节能环保，因而本实施例优选太阳能电池2和透明聚光罩1充当供电装置；透明聚光罩1将汇聚后的太阳光通过高转化率的太阳能电池2转换为电能，即通过聚光光伏技术将太阳能转化为电能，供给真空泵5、水泵9使用，实现了装置的自给自足；另外，由于太阳能电池2位于闪蒸罐4内且被密封放置于海水面上，因而太阳能电池的底部会没入闪蒸罐内的海水内，可利用海水冷却太阳能电池2，这样一方面可以解决太阳能电池2的散热的问题，使得太阳能电池2运行在最佳工况下，另一方面可以利用太阳能电池2的这一部分热量加热闪蒸罐4内的海水，提高闪蒸罐4的产气量。Because the flash tank 4 is provided with a natural circulation connecting pipe 3, and the bottom of the flash tank 4 has an opening and the opening leads below the seawater surface, when the vacuum pump 5 is used to evacuate the flash tank 4, the flash tank can be 4 has a certain degree of vacuum. What needs to be explained here is that the initial vacuum degree in the flash tank 4 is realized by the vacuum pump 5. Afterwards, the vacuum pump 5 will work in gaps, and the purpose is to regularly extract some non-condensable gases and keep the flash tank 4 vacuum degree, affected by the air pressure difference, seawater will enter the flash tank 4 from the bottom opening of the flash tank 4, and the depth below the sea surface of the connecting pipe 3 due to natural circulation is greater than the depth below the sea surface of the flash tank 4 , because the temperature of the deep seawater is lower than the temperature of the surface seawater, the density of the deep seawater is greater than that of the surface seawater. Affected by the density difference, the seawater in the flash tank 4 will be discharged through the natural circulation connecting pipe 3 to form the device. Natural circulation, that is, the replenishment of seawater in the flash tank 4 is realized by using the buoyancy force formed by the density difference between the surface temperature seawater and the deep cold seawater, the structure is simple, the temperature difference energy of seawater is fully utilized, and the energy saving effect is remarkable; moreover Since the flash tank 4 is evacuated by the vacuum pump 5, the flash tank 4 has a certain degree of vacuum, so no additional heating equipment is needed to heat the warm seawater in the flash tank 4 to complete the flash evaporation. save energy. It should be noted that this device can also use power supply devices such as lithium batteries to replace the solar battery 2 and the transparent condenser 1 to supply power to the device, and because the solar battery 2 and the transparent condenser 1 can make full use of the green energy of solar energy, It is more energy-saving and environmentally friendly, so in this embodiment, the solar cell 2 and the transparent concentrating cover 1 are preferably used as power supply devices; the transparent concentrating cover 1 converts the concentrated sunlight into electrical energy through the solar cell 2 with a high conversion rate, that is, through the concentrating photovoltaic The technology converts solar energy into electrical energy, which is supplied to the vacuum pump 5 and the water pump 9, realizing the self-sufficiency of the device; in addition, since the solar cell 2 is located in the flash tank 4 and is sealed and placed on the sea surface, the bottom of the solar cell will be submerged in the flash tank. In the seawater in the steamer, seawater can be used to cool the solar cell 2, so that on the one hand, the problem of heat dissipation of the solar cell 2 can be solved, so that the solar cell 2 can run under optimal conditions, and on the other hand, the solar cell 2 can be used to A part of the heat heats the seawater in the flash tank 4 to increase the gas production of the flash tank 4 .
储液罐7上设有液位计8，液位计8用于计算显示储液罐7内淡水的液位，当储液罐7内的淡水达到一定液位时，启动水泵9将储液罐7内的淡水抽取运输到陆面上，即可根据液位计8完成对储液罐7内淡水的抽取，实现自动化控制。Liquid level gauge 8 is arranged on liquid storage tank 7, and liquid level gauge 8 is used for calculating and displaying the liquid level of fresh water in liquid storage tank 7, when the fresh water in liquid storage tank 7 reaches a certain liquid level, starts water pump 9 to store liquid The fresh water in the tank 7 is extracted and transported to the land surface, and the fresh water in the liquid storage tank 7 can be extracted according to the liquid level gauge 8 to realize automatic control.
其中，冷凝器6为管翅式冷凝器，且该冷凝器6设置在海水面以下1000米左右深处，充分利用深层冷海水对从闪蒸罐4蒸发出的水蒸气进行冷凝，节省能源。Wherein, the condenser 6 is a tube-fin condenser, and the condenser 6 is arranged at a depth of about 1000 meters below the sea surface, and makes full use of the deep cold seawater to condense the water vapor evaporated from the flash tank 4 to save energy.
利用上述装置完成的海水温差能自然循环海水淡化方法包括以下步骤：A.真空泵抽取闪蒸罐内的空气，使得海水进入闪蒸罐内进行闪蒸，获得水蒸气，且进入闪蒸罐内的海水会通过自然循环连通管排出，形成自然循环；B.水蒸气通过连接管路进入冷凝器内冷凝为淡水并储存在储液罐中。The seawater temperature difference energy natural circulation seawater desalination method completed by the above-mentioned device includes the following steps: A. The vacuum pump extracts the air in the flash tank, so that the seawater enters the flash tank for flash evaporation, obtains water vapor, and enters the air in the flash tank Seawater will be discharged through the natural circulation connecting pipe to form a natural circulation; B. Water vapor enters the condenser through the connecting pipe to condense into fresh water and store it in the liquid storage tank.
该方法还包括有步骤：透明聚光罩将汇聚后的太阳光通过太阳能电池转换为电能，太阳能电池内的电能供真空泵和水泵使用。The method also includes a step: the transparent light collecting cover converts the concentrated sunlight into electric energy through the solar cell, and the electric energy in the solar cell is used by a vacuum pump and a water pump.
该方法还包括以下步骤：设定储液罐中淡水的输出液位数值，当储液罐中淡水的液位等于或大于该输出液位数值时，启动水泵，收集淡水。The method also includes the following steps: setting the output liquid level value of the fresh water in the liquid storage tank, and starting the water pump to collect fresh water when the liquid level of the fresh water in the liquid storage tank is equal to or greater than the output liquid level value.
上列详细说明是针对本发明之一可行实施例的具体说明，该实施例并非用以限制本发明的专利范围，凡未脱离本发明所为的等效实施或变更，均应包含于本案的专利范围中。The above detailed description is a specific description of a feasible embodiment of the present invention. This embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or change that does not depart from the present invention should be included in the scope of this case. within the scope of the patent.
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| CN111302421A (en) * | 2020-03-03 | 2020-06-19 | 西安交通大学 | Seawater desalination device and working method thereof |
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