Self-energy-supply type seawater desalination platform

Abstract

The utility model discloses a self-powered seawater desalination platform which comprises a platform main body and a primary filter cabin, the primary filter cabin comprises a cabin body and a filter screen, the cabin body is cylindrical and is arranged below the platform main body, the side wall of the cabin body is provided with a water inlet and a water outlet, the upper side and the lower side of the water inlet are provided with sliding rails in the circumferential direction, and the sliding rails are arranged on the platform main body. The filter screen is in an arc shape and is in sliding connection with the sliding rail, and the filter screen periodically slides in a reciprocating mode along the sliding rail and is used for flushing the filter screen through ocean currents. The filter screen which periodically swings back and forth is arranged in the first-stage filter cabin, so that the filter screen is washed by ocean current, the problem that the filter screen is difficult to maintain and replace is solved, a large amount of seaweed is prevented from being accumulated, continuous operation of seawater desalination equipment is ensured, and electric energy self-supply and fresh water self-supply of an offshore comprehensive platform are realized in cooperation with a surge power generation system.

Description

Technical Field

[0001] The utility model relates to the technical field of seawater desalination, in particular to a self - powered seawater desalination platform. Background Art

[0002] An offshore integrated platform is an integrated platform floating in a designated sea area, which can provide support and guarantee for various offshore operations. Since it floats on the sea surface for a long time, the most fundamental way to solve the fresh water supply is to directly build a seawater desalination plant on the platform. At present, the seawater desalination technology built on land has been relatively mature. However, when transplanting this seawater desalination technology to an offshore integrated platform, many technical problems are encountered, one of which is the primary filtration problem of seawater. The seawater desalination plant on land intercepts plants and fish in seawater by setting a filter screen of a certain specification. After using for a period of time, a large amount of seaweed will accumulate on the filter screen, affecting the flow of seawater. Regular flushing or replacement of the filter screen can solve the problem of seaweed accumulation. However, for an offshore integrated platform, the filter cabin for water intake and primary filtration is located directly below the platform and below the sea surface, making it inconvenient to replace or maintain the filter screen.

[0003] Therefore, how to create a new self - powered seawater desalination platform is one of the important current research topics. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a self - powered seawater desalination platform, which does not need regular maintenance or replacement of the filter screen, uses ocean currents to wash the filter screen, avoids a large amount of seaweed accumulation, and ensures the long - term continuous operation of the seawater desalination equipment, thereby overcoming the deficiencies of the prior art.

[0005] To solve the above - mentioned technical problem, the utility model provides a self - powered seawater desalination platform, including a platform main body and a primary filter cabin. The primary filter cabin includes a cabin body and a filter screen. The cabin body is cylindrically arranged below the platform main body. The side wall of the cabin body is provided with a water inlet and a water outlet. Slide rails are circumferentially arranged on both sides above and below the water inlet. The filter screen is arc - shaped and slidably connected with the slide rails. The filter screen slides periodically along the slide rails for washing the filter screen by using ocean currents.

[0006] As an improvement of the utility model, the total area of the filter screen is more than twice the area of the water inlet of the cabin body.

[0007] Furthermore, the above - mentioned self - powered seawater desalination platform further includes a workshop built on the platform main body. A sedimentation tank, a filter, a reverse osmosis membrane and a fresh water storage tank are arranged in the workshop. The primary filter cabin, the sedimentation tank, the filter, the reverse osmosis membrane and the fresh water storage tank are sequentially connected through pipelines, and water pumps are installed on the pipelines.

[0008] Furthermore, the platform main body includes a floating body, a truss and a deck. The truss is a regular hexagonal frame structure welded by steel sections. The floating body is a hollow cylindrical shape and is welded to the bottom of the truss to provide buoyancy for the platform main body. The deck is welded to the top of the truss. The first-stage filter cabin is arranged directly below the floating body, and the diameter of the cabin body is equal to that of the floating body.

[0009] Furthermore, a surging power generation system is also arranged around the platform main body. The surging power generation system includes special-shaped floating balls, a transmission device, a collection device and a generator. The special-shaped floating balls are hinged to the end of the transmission device. The head end of the transmission device is connected to the collection device, and the collection device is connected to the generator. The special-shaped floating balls move up and down relative to the platform main body, and drive the collection device and the generator to act through the transmission device, so as to supply power to all electrical equipment on the platform main body.

[0010] Furthermore, swing frames are welded to both the upper and lower ends of the filter screen. The swing frames are triangular frame structures. Two vertices of the triangle are welded and fixed to the frame of the filter screen, and a connecting ring is welded at one vertex. A fixed shaft is vertically arranged at the center of the cabin body, and the connecting ring is sleeved on the fixed shaft, so that the filter screen swings periodically back and forth around the fixed shaft.

[0011] Furthermore, the outer periphery of the connecting ring is processed into a gear shape and is in transmission connection with the transmission device in the surging power generation system.

[0012] After adopting such a design, the utility model has at least the following advantages:

[0013] 1. The filter screen can swing periodically back and forth around the fixed shaft, and the total area of the filter screen is more than twice the area of the water inlet. It is ensured that there is always a part of the area covering the outside of the water inlet during the swing of the filter screen to play a filtering role. When the filter screen is in a moving state, it is less likely to cause seaweed accumulation.

[0014] 2. The direction of ocean currents is regular, some are fixed for a long time, and some change seasonally. Therefore, the water inlet direction of the cabin body can be set according to the law of ocean currents, so that the water inlet faces the ocean current direction. After the filter screen intercepts seaweed, it swings to the side of the water inlet, and the ocean current is used to wash the filter screen. In this way, reciprocating can ensure the cleanliness of the filter screen without regular maintenance or replacement.

[0015] 3. The platform main body is provided with a surging power generation system. On the one hand, the surging energy is converted into electrical energy to provide continuous clean energy for the electrical equipment on the platform. On the other hand, the surging energy is also converted into mechanical energy to provide power for the swing of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above is only an overview of the technical solution of the utility model. In order to be able to understand the technical means of the utility model more clearly, the following further detailed description of the utility model will be given in combination with the drawings and specific embodiments.

[0017] Figure 1 It is a schematic structural diagram of a self - powered seawater desalination platform provided by the present utility model.

[0018] Figure 2 It is a schematic structural diagram of the primary filter cabin.

[0019] Figure 3 It is a schematic structural diagram of the cabin body.

[0020] Figure 4 It is a schematic structural diagram of the filter screen.

[0021] Figure 5 It is a schematic diagram of the usage state when the filter screen is at the initial position of the stroke.

[0022] Figure 6 It is a schematic diagram of the usage state when the filter screen is at the end position of the stroke.

[0023] Explanation of reference numerals: 1. Platform main body; 11. Truss; 12. Floating body; 13. Deck; 2. Primary filter cabin; 21. Cabin body; 211. Slide rail; 212. Water inlet; 213. Water outlet; 214. Fixed shaft; 22. Filter screen; 221. Swing frame; 222. Connecting ring; 3. Sedimentation tank; 4. Filter; 5. Reverse osmosis membrane; 6. Fresh water storage tank; 7. Workshop; 8. Surge power generation system. Detailed implementation manners

[0024] Please refer to Figures 1 to 4 , the present utility model provides a self - powered seawater desalination platform, including a platform main body 1, a primary filter cabin 2, a sedimentation tank 3, a filter 4, a reverse osmosis membrane 5, a fresh water storage tank 6, a workshop 7, and a surge power generation system 8.

[0025] The platform main body 1 includes a truss 11, a floating body 12, and a deck 13.

[0026] The truss 11 is a regular hexagonal frame structure welded by steel sections and is the support structure of the platform main body 1. The floating body 12 is a cylindrical box body with a hollow interior, and a plurality of floating bodies 12 are welded to the bottom of the truss 11 to provide buoyancy. The deck 13 is welded to the top of the truss 11.

[0027] The primary filter cabin 2 includes a cabin body 21 and a filter screen 22.

[0028] The cabin body 21 is cylindrical and hollow inside. The side walls of the cabin body 21 are respectively provided with a water inlet 212 and a water outlet 213. Slide rails 211 are respectively arranged along the circumferential direction of the side wall of the cabin body 21 on the upper and lower sides at the water inlet 212, and a vertical fixed column 214 is arranged at the center of the cabin body 21.

[0029] In this embodiment, the diameter of the cabin body 21 is equal to the diameter of the floating body 12. The primary filtration cabin 2 is integrally arranged below the floating body 12, and during use, the primary filtration cabin 2 is completely submerged under the sea surface.

[0030] In other embodiments, the primary filtration cabin 2 can also be arranged below the truss 11. If such an arrangement is adopted, it is necessary to ensure that the water inlet 212 is below the sea surface to ensure that seawater can flow naturally into the cabin body 21.

[0031] The filter screen 22 is integrally arc-shaped, and sliding grooves matching with the slide rails 211 are opened at the upper and lower side frames, so that a sliding connection is formed between the filter screen 22 and the slide rails 211. Swing frames 221 are welded at both the upper and lower ends of the filter screen 22. The swing frames 221 are triangular frame structures. Two vertices of the triangle are welded and fixed to the frame of the filter screen 22, and a connecting ring 222 is welded at one vertex. During installation, the connecting ring 222 is sleeved on the fixed column 214 of the cabin body 21. The functions of the swing frames 221 and the connecting ring 222 are to drive the filter screen 22 to swing.

[0032] In this embodiment, the total area of the filter screen 22 is more than twice the area of the water inlet 212 of the cabin body 21 to ensure that no matter where the filter screen 22 swings to, a part of the area covers the outside of the water inlet 212 to play an intercepting role.

[0033] The plant building 7 is built on the deck 13 of the platform main body 1. Figure 1 For the sake of clearly showing the internal equipment, the ceiling of the plant building 7 is removed. A sedimentation tank 3, a filter 4, a reverse osmosis membrane 5, and a fresh water storage tank 6 are respectively arranged in the plant building 7. The primary filtration cabin 2, the sedimentation tank 3, the filter 4, the reverse osmosis membrane 5, and the fresh water storage tank 6 are sequentially connected by pipelines, and water pumps are arranged on the corresponding pipelines as required.

[0034] The surging power generation system 8 is arranged around the platform main body 1. The surging power generation system 8 includes special-shaped floating balls, a transmission device, a collection device, and a generator. The special-shaped floating balls are hinged to the end of the transmission device. The head end of the transmission device is connected to the collection device, and the collection device is connected to the generator. The special-shaped floating balls move up and down relative to the platform main body 1, and drive the collection device and the generator to act through the transmission device to supply power to all the electrical equipment on the platform main body 1.

[0035] In this embodiment, the transmission device in the surging power generation system 8 is also used to provide power for the periodic reciprocating swing of the filter screen 22. The outer circumference of the connecting ring 222 on the filter screen 22 is processed into a gear shape and is connected to the transmission device in the surging power generation system through a transmission component (not shown in the figure). It should be noted that the transmission device in the surging power generation system 8 swings in the vertical direction with the undulation of the waves, while the filter screen 22 swings in a circular motion in the horizontal direction. The transmission component connecting the two is a combination of a gear and a rotating shaft in the prior art, so it is not shown in the figure.

[0036] The principle of the present utility model is to utilize the natural flow of ocean currents to achieve the flushing of the filter screen 22. Since the direction of ocean currents is regular, in some sea areas, the direction of ocean currents remains unchanged for a long time, while in some sea areas, the ocean currents change with seasons and only change once every few months. Generally speaking, the direction of ocean currents is fixed and predictable. In specific use, the orientation of the platform main body 1 can be adjusted so that the water inlet 212 of the cabin body 21 faces the direction of ocean currents.

[0037] Please refer to Figure 5 and Figure 6 , when the filter screen 22 is at the initial position of the stroke, the right half of the filter screen 22 covers the water inlet 212 to intercept seaweeds. After staying for a period of time, the filter screen 22 swings to the end position of the stroke. At this time, the left half of the filter screen 22 covers the water inlet 212, while the right half swings to be nearly parallel to the direction of ocean currents, and the right half is flushed by the ocean currents. After staying for another period of time, the filter screen 22 swings in the opposite direction, the right half of the filter screen 22 covers the water inlet 212 again, and the left half is flushed. Such periodic swinging back and forth enables a part of the area of the filter screen 22 to be perpendicular to the direction of ocean currents for intercepting seaweeds, and another part of the area to be nearly parallel to the direction of ocean currents for flushing and carrying away seaweeds by the ocean currents.

[0038] The seawater enters the cabin body 21 after primary filtration by the filter screen 22, and enters the sedimentation tank 3 through the pipeline of the water outlet 213. The function of the sedimentation tank 3 is to stand still and sediment to remove suspended matters in the water. The seawater enters the filter 4 from the outlet of the sedimentation tank 3 through the pipeline for more precise filtration, then enters the reverse osmosis membrane 5, and fresh water is generated by using the reverse osmosis membrane method, and finally is transported to the fresh water storage tank 6 for storage.

[0039] The present utility model realizes the flushing of the filter screen by using ocean currents through the filter screen with periodic reciprocating swinging arranged in the primary filter cabin, solves the problem of difficult maintenance and replacement of the filter screen, avoids the large accumulation of seaweeds, ensures the continuous operation of the seawater desalination equipment, and cooperates with the wave power generation system to achieve the self-supply of electric energy and fresh water for the offshore integrated platform.

[0040] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Any simple modifications, equivalent changes or decorations made by those skilled in the art using the disclosed technical content above all fall within the protection scope of the present utility model.

Claims

1. A self-powered seawater desalination platform, characterized in that, It includes a platform main body and a primary filter cabin. The primary filter cabin includes a cabin body and a filter screen. The cabin body is cylindrically arranged below the platform main body. An inlet and an outlet are arranged on the side wall of the cabin body. Slide rails are arranged circumferentially on both the upper and lower sides of the inlet. The filter screen is arc-shaped and is slidably connected to the slide rails. The filter screen slides periodically back and forth along the slide rails for flushing the filter screen by ocean currents.

2. The self-powered seawater desalination platform according to claim 1, characterized in that, The total area of the filter screen is more than twice the area of the inlet of the cabin body.

3. The self-powered seawater desalination platform according to claim 1, wherein It further includes a workshop built on the platform main body. A sedimentation tank, a filter, a reverse osmosis membrane, and a fresh water storage tank are arranged in the workshop. The primary filter cabin, the sedimentation tank, the filter, the reverse osmosis membrane, and the fresh water storage tank are sequentially connected through pipelines, and a water pump is installed on the pipeline.

4. The self-powered seawater desalination platform according to claim 1, characterized in that, The platform main body includes a floating body, a truss, and a deck. The truss is a regular hexagonal frame structure welded by steel sections. The floating body is a hollow cylinder and is welded at the bottom of the truss to provide buoyancy for the platform main body. The deck is welded on the top of the truss. The primary filter cabin is arranged directly below the floating body, and the diameter of the cabin body is equal to that of the floating body.

5. A self-powered seawater desalination platform according to claim 1, characterized in that, A surging power generation system is further arranged around the platform main body. The surging power generation system includes a special-shaped floating ball, a transmission device, a collection device, and a generator. The special-shaped floating ball is hinged to the end of the transmission device. The head end of the transmission device is connected to the collection device, and the collection device is connected to the generator. The special-shaped floating ball moves up and down relative to the platform main body and drives the collection device and the generator to act through the transmission device to supply power to all electrical equipment on the platform main body.

6. The self-powered seawater desalination platform according to claim 5, wherein Swing frames are welded to both the upper and lower ends of the filter screen. The swing frame is a triangular frame structure. Two vertices of the triangle are welded and fixed to the frame of the filter screen, and a connecting ring is welded at one vertex. A fixed shaft is vertically arranged at the center of the cabin body. The connecting ring is sleeved on the fixed shaft to make the filter screen swing periodically back and forth around the fixed shaft.

7. A self-powered seawater desalination platform according to claim 6, characterized in that, The outer circumference of the connecting ring is machined into a gear shape and is in transmission connection with the transmission device in the surging power generation system.

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