CN102030392A - Wind and solar hybrid reverse osmosis desalination device - Google Patents

Abstract

The invention belongs to the technical field of reverse osmosis seawater desalination, and provides a wind-solar complementary reverse osmosis seawater desalination device, which includes a wind-solar hybrid power generation system and a reverse osmosis seawater desalination device. The osmotic seawater desalination device provides electricity, and the wind-solar hybrid power generation system includes a system-wide smart grid controller. In this way, the intelligent power generation, intelligent power storage, intelligent power transmission, intelligent power distribution and intelligent power consumption of the whole system can be realized, and the power supply of wind-solar hybrid power generation can be guaranteed to be stable and reliable.

Description

A wind-solar complementary reverse osmosis seawater desalination device

technical field

The invention relates to a seawater desalination device, in particular to a wind-solar complementary reverse osmosis seawater desalination device.

Background technique

At present, reverse osmosis seawater desalination technology has been widely used all over the world, but due to power supply problems, it cannot be promoted in remote areas without power grids, especially isolated islands. The local use of wind energy and solar energy to provide electricity for seawater desalination has been initially developed and has a good prospect. However, the traditional wind-solar hybrid power generation system lacks smart grid control and deployment, and cannot be dispatched according to wind-wind resource conditions and power supply and demand conditions, and cannot guarantee the stability and reliability of power supply. For example, the Chinese invention patent announced on December 26, 2007 with the authorization number CN20995974Y. In addition, most reverse osmosis seawater desalination devices currently on the market have complex structures, and insufficient attention is paid to post-treatment of produced water, making it difficult to guarantee the quality of produced water.

Contents of the invention

In order to solve the deficiencies in the prior art, the present invention provides a wind-solar complementary seawater desalination device with stable and sufficient power supply and stable production of safe and high-quality fresh water.

The technical solution adopted by the present invention is: a wind-solar complementary reverse osmosis seawater desalination device, including a wind-solar complementary power generation system and a reverse osmosis seawater desalination device, the wind-solar hybrid power generation system is connected with the reverse osmosis seawater desalination device, Provide electricity. It is characterized in that: the wind-solar hybrid power generation system includes a wind generator, a rectifier, a solar panel, a solar controller, a battery pack, an inverter, and a system-wide smart grid controller, wherein the wind generator is connected to the rectifier, and the solar The solar panel is connected to the solar controller, and the rectifier, solar controller, battery pack and inverter are respectively connected to the smart grid controller of the whole system, and the inverter is connected to the reverse osmosis desalination device, The device provides electricity. The reverse osmosis seawater desalination device includes a water fetcher, a seawater tank, a water supply pump, a sand filter, a microfilter, a high-pressure pump, a reverse osmosis membrane module, a cleaning water tank, a desalinated water processor, and a freshwater tank, wherein the water fetcher is connected to the seawater tank , the sea water tank is connected to the water supply pump, the water supply pump is connected to the sand filter, the sand filter is connected to the microfilter, the microfilter is connected to the water inlet of the high pressure pump, the water outlet of the high pressure pump is connected to the reverse osmosis membrane module, and the water outlet of the reverse osmosis membrane module is respectively It is connected with the water inlet of the cleaning water tank and the desalinated water processor, and the water outlet of the cleaning water tank is connected with the water inlet of the high-pressure pump. The fresh water processor is connected with the fresh water tank, and the treated fresh water flows into the fresh water tank.

The connection between the smart grid controller of the whole system and the rectifier, solar controller, storage battery pack and inverter is a two-way connection, which is used to monitor the process of power generation, power storage, power transmission, power distribution and power consumption of the whole system. Through the monitoring, adjustment and control functions of the smart grid controller of the whole system, the smart power generation, smart power storage, smart power transmission, smart power distribution and smart power consumption of the whole system can be achieved, and the power supply of wind-solar hybrid power generation can be guaranteed to be stable and reliable.

The fresh water processor includes a fresh water sterilizer and an unqualified fresh water processor. The fresh water sterilizer is an ultraviolet sterilizer with compact structure, convenient use and low cost. The unqualified fresh water processor includes an automatic detection device for fresh water quality and an unqualified fresh water outlet, and is equipped with an automatic switch. The fresh water quality automatic detection device can automatically sample and detect. When it detects that the fresh water index is unqualified, the automatic switch is turned on, and the unqualified fresh water is discharged from the unqualified fresh water outlet. Qualified fresh water flows into the fresh water tank for use, thus ensuring the safety of the produced water quality, and the system can stably provide high-quality fresh water.

The high-pressure pump is equipped with ultra-high pressure protection and shutdown delay device. When the pressure exceeds a certain value, the ultra-high pressure protection device works to protect the high-pressure pump and reverse osmosis membrane from being damaged. The shutdown delay device works when the main engine of the system is shut down. When the main engine is shut down, the high-pressure pump will continue to work for a period of time. At this time, the high-pressure pump pumps fresh water from the cleaning water tank to fill the reverse osmosis membrane and replace all the seawater in the reverse osmosis membrane module with fresh water, so as to protect the reverse osmosis membrane components from being corroded by seawater.

The microfilter is a secondary microfilter. After the seawater passes through the sand filter to filter the large particles, it enters the microfilter for secondary filtration of tiny particles, effectively preventing the clogging of the reverse osmosis membrane module.

The water extractor includes a water intake head and a self-priming pump. The water intake head is fixed on the bottom of the water intake point, and the self-priming pump is installed on land, which avoids the disadvantages of using submersible pumps for long-term immersion in seawater, which are easily washed away by tides, damaged by waves, and easily eroded.

Compared with the prior art, the present invention has the following significant points:

In terms of power supply, a system-wide smart grid controller is used to monitor, adjust and control the system to realize system-wide smart power generation, smart power storage, smart power transmission, smart power distribution and smart power consumption, and ensure the stable power supply of wind-solar hybrid power generation ,reliable.

In terms of desalination water treatment and water quality control, ultraviolet sterilization treatment is used first, and then automatic sampling is used to determine whether the water quality is qualified. When the unqualified fresh water index is detected, the automatic switch is turned on, the unqualified fresh water is discharged from the water outlet, and the qualified fresh water flows into the fresh water tank for use, thus ensuring the safety of the produced water quality and the system can stably provide high-quality fresh water.

In terms of reverse osmosis membrane module protection, the high-pressure pump is also equipped with ultra-high pressure protection and shutdown delay device. The ultra-high pressure protection device protects the high-pressure pump and reverse osmosis membrane from being damaged by pressure. The shutdown delay device maintains the high-pressure pump to continue working for a period of time when the main engine of the system is shut down, and replaces all the seawater pumped from the fresh water reverse osmosis membrane module with fresh water to protect the reverse osmosis membrane module from being corroded by seawater. Compared with the independent shutdown film surface automatic cleaning device in the prior art, the structure is more compact and the effect is better.

Description of drawings

Fig. 1 is a block diagram of the wind-solar hybrid power generation system of the present invention.

Fig. 2 is a block diagram of the reverse osmosis seawater desalination device of the present invention.

Among them, in the figure 1. Wind generator; 2. Rectifier; 3. Solar panel; 4. Solar controller; 5. Battery pack; 6. System-wide smart grid controller; 7. Inverter; Desalination device; 9. Water fetcher; 91. Water intake head; 92. Self-priming pump; 10. Sea water tank; 11. Water supply pump; 12. Sand filter; 13. Microfilter; 131 Primary microfilter; Filter; 14. High-pressure pump; 15. Reverse osmosis membrane module; 16. Cleaning water tank; 17. Desalinated water processor; 171. Fresh water sterilizer; 172. Unqualified fresh water processor; 18. Fresh water tank.

Detailed ways

As shown in Figure 1, the wind-solar hybrid power generation system of the present invention includes a wind generator 1, a rectifier 2, a solar panel 3, a solar controller 4, a battery pack 5, an inverter 7, and a system-wide smart grid controller 6, wherein The wind power generator 1 is connected to the rectifier 2, the solar panel 3 is connected to the solar controller 4, the rectifier 2, the solar controller 4, the storage battery pack 5 and the inverter 7 are respectively connected to the whole system smart grid controller 6, and the inverter The device 7 is connected with the reverse osmosis seawater desalination device 8, and provides power to the reverse osmosis seawater desalination device. Among them, the connection between the smart grid controller 6 of the whole system and the rectifier 2, the solar controller 4, the battery pack 5 and the inverter 7 is a two-way connection, which is used to monitor the power generation, storage, transmission, distribution and consumption of the whole system. electrical process. Through the monitoring, adjustment and control functions of the smart grid controller of the whole system, the smart power generation, smart power storage, smart power transmission, smart power distribution and smart power consumption of the whole system can be achieved, and the power supply of wind-solar hybrid power generation can be guaranteed to be stable and reliable.

As shown in Figure 2, the reverse osmosis seawater desalination device of the present invention includes a water fetcher 9, a seawater tank 10, a water supply pump 11, a sand filter 12, a microfilter 13, a high pressure pump 14, a reverse osmosis membrane module 15, a cleaning water tank 16, a desalination Water processor 17, fresh water tank 18, wherein water fetcher 9 links to each other with sea water tank 10, sea water tank 10 links to each other with water supply pump 11, water supply pump 11 links to each other with sand filter 12, sand filter 12 links to each other with microfilter 13, microfilter 13 links to each other with The water inlet of the high-pressure pump 14 is connected, the water outlet of the high-pressure pump 14 is connected with the reverse osmosis membrane module 15, the water outlet of the reverse osmosis membrane module 15 is connected with the water inlet of the cleaning water tank 16 and the desalinated water processor 17 respectively, and the outlet of the cleaning water tank 16 The water port is connected with the water inlet of the high-pressure pump 14, and is provided with a control switch. After the reverse osmosis desalinated water fills the cleaning water tank 16, the water inlet switch of the cleaning water tank 16 is closed, and the desalinated water flows into the desalinated water processor 17. The fresh water processor 17 includes a fresh water sterilizer 171 and an unqualified fresh water processor 172. The fresh water sterilizer 171 in this embodiment is an ultraviolet sterilizer, which is compact in structure, easy to use and low in cost. The unqualified fresh water processor 172 includes an automatic detection device for fresh water quality and an unqualified fresh water outlet, and is equipped with an automatic switch. The fresh water sterilized by the sterilizer flows through the unqualified fresh water processor 172, and the fresh water quality automatic detection device automatically samples and detects. When it detects that the fresh water index is unqualified, the automatic switch is turned on, and the unqualified fresh water is discharged from the unqualified fresh water outlet; Qualified fresh water flows into the fresh water tank 18 for use, thereby ensuring the water quality safety of the produced water, and the system can stably provide high-quality fresh water.

The high-pressure pump 14 of the present invention is provided with an ultra-high pressure protection and shutdown delay device. When the pressure exceeds a certain value, the ultra-high pressure protection device works to protect the high-pressure pump 14 and the reverse osmosis membrane assembly 15 from being damaged. The shutdown delay device works when the main engine of the system is shut down. When the main engine is shut down, the high-pressure pump will continue to work for a period of time. At this time, the water outlet switch of the cleaning water tank 16 is opened, and the high-pressure pump 14 draws fresh water from the cleaning water tank 16 to fill the reverse osmosis membrane module 15. All the seawater in the reverse osmosis membrane module 15 is replaced with fresh water, thereby protecting the reverse osmosis membrane module 15 from being corroded by seawater.

The water extractor 9 of the present invention includes a water intake head 91 and a self-priming pump 92. The water intake head 91 is fixed on the seabed of the water intake point, and the self-priming pump 92 is installed on land, so as to avoid the use of submersible pumps for long-term immersion in seawater, which is easily washed away by the tide. , waves beat damage and easy erosion and other shortcomings. Self-priming pump 92 can work independently, and when seawater water tank 10 seawater is not enough, starts automatically and draws seawater, stops work automatically when seawater water tank is full. The seawater tank 10 is used for transition, on the one hand, it can ensure sufficient seawater supply in the seawater desalination process, and on the other hand, it can also preliminarily precipitate larger particles of impurities in the seawater.

The microfilter 13 of the present invention is a secondary microfilter. After the seawater passes through the sand filter 12 to filter the large particles, it passes through the primary microfilter 131 and the secondary microfilter 132 to filter the tiny particles in a secondary stage, effectively preventing the reverse osmosis membrane assembly 15 Blockage occurs, the primary microfilter 131 in this embodiment is a 10-micron microfilter, and the secondary microfilter 132 is a 3-micron microfilter.

Claims (10)

1. A wind-solar complementary reverse osmosis seawater desalination device, comprising a wind-wind complementary power generation system and a reverse osmosis seawater desalination device, the wind-wind hybrid power generation system is connected with the reverse osmosis seawater desalination device, and provides power to the reverse osmosis seawater desalination device, it is characterized in that : The wind-solar hybrid power generation system includes a system-wide smart grid controller. 2. The wind-solar complementary reverse osmosis seawater desalination device according to claim 1, characterized in that: the reverse osmosis seawater desalination device comprises a water fetcher, a seawater tank, a water supply pump, a sand filter, a microfilter, a high-pressure pump, a reverse osmosis Membrane modules, cleaning water tanks, desalinated water processors, and fresh water tanks, in which the water fetcher is connected to the sea water tank, the sea water tank is connected to the water supply pump, the water supply pump is connected to the sand filter, the sand filter is connected to the microfilter, and the microfilter is connected to the water inlet of the high pressure pump The water outlet of the high-pressure pump is connected to the reverse osmosis membrane module, the water outlet of the reverse osmosis membrane module is connected to the water inlet of the cleaning water tank and the desalinated water processor, and the water outlet of the cleaning water tank is connected to the water inlet of the high-pressure pump. The fresh water processor is connected with the fresh water tank, and the treated fresh water flows into the fresh water tank automatically. 3. The wind-solar hybrid reverse osmosis seawater desalination device according to claim 1 or 2, characterized in that: the rectifiers, solar controllers, battery packs and inverters in the wind-solar hybrid power generation system are respectively controlled by the smart grid of the whole system device connection. 4. The wind-solar complementary reverse osmosis seawater desalination device according to claim 3, characterized in that: the connection between the smart grid controller of the whole system and the rectifier, the solar controller, the battery pack and the inverter is a two-way connection . 5. The wind-solar complementary reverse osmosis seawater desalination device according to claim 3, characterized in that: the desalinated water processor includes a fresh water sterilizer and an unqualified fresh water processor. 6. The wind-solar hybrid reverse osmosis seawater desalination device according to claim 3, characterized in that: the high-pressure pump is equipped with ultra-high pressure protection and shutdown delay devices. 7. The wind-solar complementary reverse osmosis seawater desalination device according to claim 3, characterized in that: said microfilter is a secondary microfilter. 8. A wind-solar complementary reverse osmosis seawater desalination device according to claim 3, characterized in that: said water extractor includes a water intake head and a self-priming pump. 9. A wind-solar complementary reverse osmosis seawater desalination device according to claim 3, characterized in that: said fresh water sterilizer is an ultraviolet sterilizer. 10. The wind-solar complementary reverse osmosis seawater desalination device according to claim 3, characterized in that: the unqualified fresh water processor includes an automatic detection device for fresh water quality, an unqualified fresh water outlet and an automatic switch.

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