An evaporation device for seawater desalination

Abstract

The present invention provides an evaporation device for seawater desalination, comprising an evaporation device body, the evaporation device body comprising an evaporation tank, a heating module, a steam pipeline assembly, a seawater pipeline assembly, and a cooling assembly. The heating module is provided at the inner bottom of the evaporation tank, and a preheating plate is installed on the top of the heating module. The surface of the preheating plate is connected to the steam pipeline assembly portion. A guide rod is installed on the top of the evaporation tank, and the bottom of the guide rod passes through the surface of the preheating plate. The evaporation device for seawater desalination re-introduces generated steam into the inner side of the evaporation tank to preheat the injected seawater, thereby achieving the dual effects of cooling the steam and assisting in heating the injected seawater raw material, improving heat utilization and reducing overall power requirements. The preheating plate can automatically scrape off crystals and precipitates adhering to the surface of the heating tube.

Description

Technical Field

[0001] The present invention relates to the technical field of seawater desalination, in particular to an evaporation device for seawater desalination. Background Art

[0002] In the seawater desalination process, distillation is the earliest desalination technology to be put into industrial application. This technology heats seawater to make it boil and vaporize, and then condenses the steam into fresh water. It has the advantages of low requirements for the water quality of raw seawater and large production capacity of the equipment. It is one of the current mainstream technologies for seawater desalination.

[0003] The evaporation device used for seawater desalination in the existing technology directly draws in external seawater and heats it at high temperature, and collects the generated steam. The steam is then directly cooled by condensation, which causes direct heat loss. This part of the heat cannot be utilized, resulting in a certain amount of energy waste. On the other hand, after the distillation method is used to heat the seawater, a large amount of precipitation and crystallization will be produced. This part of the impurities directly adheres to the heating module, affecting the subsequent heating effect. Therefore, frequent cleaning and maintenance are required, which is inconvenient to use. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an evaporation device for seawater desalination to solve the problems raised in the above-mentioned background technology. The present invention can realize the preheating function, reduce energy consumption, automatically clean the heating tube after distillation, improve the cleaning effect, and provide an efficient condensation function.

[0005] To achieve the above-mentioned objectives, the present invention is implemented through the following technical solutions: an evaporation device for seawater desalination, comprising an evaporation device body, the evaporation device body comprising an evaporation tank, a heating module, a steam pipeline assembly, a seawater pipeline assembly, and a cooling assembly; a heating module is provided at the inner bottom of the evaporation tank, a preheating plate is installed on the top of the heating module, the surface of the preheating plate is partially connected to the steam pipeline assembly, a guide rod is installed on the top of the evaporation tank, the bottom of the guide rod passes through the surface of the preheating plate, the top of the evaporation tank is connected to the seawater pipeline assembly, a cooling assembly is provided at the connection between the seawater pipeline assembly and the steam pipeline assembly, a slag removal port is provided at the bottom of the evaporation tank, and the top and bottom of the evaporation tank both have a conical structure.

[0006] Furthermore, the steam pipeline assembly includes a steam guide pipe and a lifting sleeve. A steam inlet is provided on the top of the evaporation tank. A lifting pipe is inserted into the inner side of the lifting sleeve. The bottom of the lifting pipe is connected to the surface of the preheating plate.

[0007] Furthermore, the top of the steam inlet is connected to one end of the steam guide pipe, and the other side of the preheating plate surface is connected to an exhaust pipe, and the exhaust pipe is connected to the cooling component part.

[0008] Furthermore, the seawater pipeline assembly includes a nozzle and a seawater delivery pipe. The top end of the seawater delivery pipe penetrates from the top of the evaporation tank into the interior, and the top end of the nozzle is connected to the interior of the seawater delivery pipe.

[0009] Furthermore, the cooling assembly includes a cooling pipe and a sandwich pipe, a heat exchange channel is provided inside the sandwich pipe, and the top of one end of the sandwich pipe is connected to the seawater delivery pipe.

[0010] Furthermore, the cooling pipe is connected to the exhaust pipe, and a plurality of heat-conducting plates are provided on the surface of the cooling pipe, and a hole structure is opened on the surface of each heat-conducting plate. The cooling pipe is in direct contact with the seawater flowing inside the heat exchange channel through the heat-conducting plates on the surface. The bottom of the sandwich pipe is connected to the seawater injection port, and both ends of the sandwich pipe are welded to the surface of the cooling pipe as a whole.

[0011] Furthermore, a floating plate is provided on the top side of the preheating plate, a fitting vertebral plate is provided on the bottom of the floating plate, and a through hole is opened on the inner side of the preheating plate.

[0012] Furthermore, there are multiple through holes, a heating cavity is provided on the inner side of the preheating plate, the lifting pipe and the exhaust pipe are both connected to the interior of the heating cavity, and the guide rod passes through the interior of two of the through holes.

[0013] Furthermore, the heating module is composed of a plurality of heating tube assemblies, a collecting tank is provided at the bottom inside the evaporation tank, the bottom of the heating tube is fixed to the surface of the collecting tank as a whole, and a supporting base is provided at the bottom of the evaporation tank.

[0014] Furthermore, the fitting vertebral plate and the collecting tank have the same size specifications, each heating tube is inserted from the inside of the through hole, and an inner scraper is provided at the bottom end of the inner wall of the through hole, and the inner side of the inner scraper is fitted with the surface of the heating tube.

[0015] Beneficial effects of the present invention: An evaporation device for seawater desalination of the present invention includes an evaporation device body, which includes an evaporation tank, a guide rod, a heating module, a steam pipeline assembly, a seawater pipeline assembly, a cooling assembly, a steam inlet, a steam guide pipe, a lifting sleeve, a lifting pipe, a preheating plate, a through hole, a floating plate, a fitting vertebral plate, a discharge pipe, a nozzle, a seawater delivery pipe, a seawater injection port, an interlayer pipe, a cooling pipe, a heat conduction plate, a heat exchange channel, a slag removal port, a collecting tank, a heating pipe, a support base, an inner scraper, and a heating cavity.

[0016] The desalination evaporation device re-introduces the generated steam into the inner side of the evaporation tank to preheat the injected seawater, thereby achieving the dual effects of cooling the steam and assisting in heating the injected seawater raw material. This improves the utilization rate of heat and reduces the overall power demand. Through this solution, the desalination efficiency is improved.

[0017] The evaporation device for seawater desalination is equipped with a preheating plate on the inner side of the evaporation tank. By controlling the floating plate with seawater, the floating plate and the preheating plate can sink after distillation is completed, automatically scraping off the crystals and precipitates adhering to the surface of the heating tube, achieving an automatic cleaning effect and reducing the difficulty and workload of subsequent manual cleaning.

[0018] When the evaporation device for seawater desalination discharges steam toward the outside, the cooling component surrounds this part of the steam pipeline through the injected seawater pipeline, so that the temperature on the steam pipeline is quickly and efficiently transferred to the seawater pipeline, achieving a cooling effect, thereby reducing the working pressure on the subsequent condensing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the appearance of an evaporation device for seawater desalination according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of an evaporation device for seawater desalination according to the present invention;

[0021] Figure 3 This is a schematic structural diagram of a cooling component portion of an evaporation device for seawater desalination according to the present invention;

[0022] Figure 4 This is a schematic structural diagram of a heating module portion of an evaporation device for seawater desalination according to the present invention;

[0023] Figure 5 This is a side sectional view of a preheating plate portion of an evaporation device for seawater desalination according to the present invention;

[0024] In the figure: 1. Evaporation tank; 2. Guide rod; 3. Heating module; 4. Steam pipeline assembly; 5. Seawater pipeline assembly; 6. Cooling assembly; 7. Steam inlet; 8. Steam guide pipe; 9. Lifting sleeve; 10. Lifting pipe; 11. Preheating plate; 12. Through hole; 13. Floating plate; 14. Fitting vertebral plate; 15. Discharge pipe; 16. Nozzle; 17. Seawater delivery pipe; 18. Seawater injection port; 19. Interlayer pipe; 20. Cooling pipe; 21. Heat conduction plate; 22. Heat exchange channel; 23. Deslagging port; 24. Collecting tank; 25. Heating pipe; 26. Support base; 27. Inner scraper; 28. Heating cavity. Implementation Method

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] See also Figures 1 to 5 The present invention provides a technical solution: an evaporation device for seawater desalination, comprising an evaporation device body, the evaporation device body comprising an evaporation tank 1, a heating module 3, a steam pipeline assembly 4, a seawater pipeline assembly 5 and a cooling assembly 6, the inner bottom of the evaporation tank 1 is provided with a heating module 3, the top of the heating module 3 is provided with a preheating plate 11, the surface of the preheating plate 11 is connected to the steam pipeline assembly 4, the top of the evaporation tank 1 is provided with a guide rod 2, the bottom of the guide rod 2 passes through the surface of the preheating plate 11, the top of the evaporation tank 1 is connected with the seawater pipeline assembly 5, the seawater pipeline assembly 5 and the steam pipeline assembly 4 are connected. A cooling assembly 6 is provided at the connection point. A slag removal port 23 is provided at the bottom of the evaporation tank 1, and the top and bottom of the evaporation tank 1 are both tapered structures. The evaporation device for seawater desalination injects the seawater raw material into the inner side of the evaporation tank 1 along the seawater pipeline assembly 5. After the seawater raw material is heated by the heating module 3 at the bottom of the evaporation tank 1, a large amount of steam is generated. The steam is then introduced into the steam pipeline assembly 4, flows along the steam pipeline assembly 4, and utilizes the heat of the steam inside the steam pipeline assembly 4 through the preheating plate 11 inside the evaporation tank 1. Finally, the steam is discharged to the outside and enters the cooling assembly 6 for cooling treatment, thereby completing the entire evaporation process of producing fresh water.

[0027] In this embodiment, the steam pipeline assembly 4 includes a steam guide pipe 8 and a lifting sleeve 9. A steam inlet 7 is provided on the top of the evaporation tank 1. A lifting pipe 10 is inserted into the inner side of the lifting sleeve 9. The bottom of the lifting pipe 10 is connected to the surface of the preheating plate 11. The top of the steam inlet 7 is connected to one end of the steam guide pipe 8. The other side of the surface of the preheating plate 11 is connected to an exhaust pipe 15. The exhaust pipe 15 is connected to the cooling assembly 6 to introduce the generated steam back into the inner side of the evaporation tank 1 to preheat the injected seawater, thereby achieving The dual effects of cooling the steam and assisting in heating the injected seawater raw material improve the utilization rate of heat and reduce the overall power demand. This solution improves the desalination efficiency. Specifically, after the external seawater is injected into the inner side of the evaporation tank 1, the steam generated by the heating will enter the inner side of the steam pipeline assembly 4 through the steam inlet 7 at the top, and then flow back into the lifting sleeve 9 inside the evaporation tank 1 through the steam guide pipe 8. In conjunction with the lifting pipe 10 at the bottom, the steam can be injected into the preheating plate 11 at the bottom to preheat the low-temperature seawater injected subsequently.

[0028] In this embodiment, the seawater pipeline assembly 5 includes a nozzle 16 and a seawater delivery pipe 17. The top of the seawater delivery pipe 17 penetrates from the top of the evaporation tank 1 to the inside, and the top of the nozzle 16 is connected to the inside of the seawater delivery pipe 17. The cooling assembly 6 includes a cooling pipe 20 and a sandwich pipe 19. A heat exchange channel 22 is provided inside the sandwich pipe 19. The top of one end of the sandwich pipe 19 is connected to the seawater delivery pipe 17. The cooling pipe 20 is connected to the discharge pipe 15, and a plurality of heat conduction plates 21 are provided on the surface of the cooling pipe 20. The surface of each of the heat conduction plates 21 is provided with a hole structure. The cooling pipe 20 is in direct contact with the seawater flowing inside the heat exchange channel 22 through the heat conduction plate 21 on the surface. The bottom of the sandwich pipe 19 is connected to the seawater injection port 18, and the sandwich pipe 19 is connected to the seawater injection port 18. Both ends of the layer pipe 19 are welded to the surface of the cooling pipe 20 as a whole. When the steam is discharged toward the outside, this part of the steam pipe is surrounded by the injected seawater pipe through the cooling component 6, so that the temperature on the steam pipe is quickly and efficiently transferred to the seawater pipe, achieving a cooling effect, thereby reducing the working pressure of the subsequent condensation equipment. Specifically, after the steam is discharged outward from the exhaust pipe 15 on the other side that can also be raised and lowered through the preheating plate 11, it can enter the cooling component 6. In this area, the steam moves from the cooling pipe 20 in the interlayer pipe 19, and the steam heat inside the cooling pipe 20 can be quickly flowed outward through the surface of the cooling pipe 20 and the heat conduction plate 21. With the help of the reverse flowing seawater inside the interlayer pipe 19, efficient cooling treatment is achieved, thereby reducing the cooling pressure of the subsequent condensation equipment.

[0029] In this embodiment, a floating plate 13 is provided on the top side of the preheating plate 11, and a fitting vertebral plate 14 is provided on the bottom of the floating plate 13. A through hole 12 is provided on the inner side of the preheating plate 11, and a plurality of through holes 12 are provided. A heating cavity 28 is provided on the inner side of the preheating plate 11. The lifting pipe 10 and the discharge pipe 15 are both connected to the interior of the heating cavity 28. The guide rod 2 passes through two of the through holes 12. The preheating plate 11 is provided on the inner side of the evaporation tank 1. By controlling the floating plate 13 with seawater, the preheating plate 11 can be passed through after the distillation is completed. By the sinking of the floating plate 13 and the preheating plate 11, the crystals and precipitates adhering to the surface of the heating tube 25 are automatically scraped off, thereby achieving the effect of automatic cleaning and reducing the difficulty and workload of subsequent manual cleaning. Since the top guide rod 2 passes through two of the through holes 12 on the preheating plate 11, the entire preheating plate 11 can only be lifted and lowered vertically along the guide rod 2. When seawater is injected into the interior, the entire preheating plate 11 can be floated. When the distillation is completed, as the internal seawater is discharged, the preheating plate 11 can automatically sink by its own gravity.

[0030] In this embodiment, the heating module 3 is composed of a plurality of heating tubes 25. A collecting tank 24 is provided at the bottom of the inner side of the evaporator 1. The bottom of the heating tube 25 is fixed to the surface of the collecting tank 24 as a whole. A supporting base 26 is provided at the bottom of the evaporator 1. The fitting vertebral plate 14 and the collecting tank 24 have the same size specifications. Each heating tube 25 passes through the inside of the through hole 12, and an inner scraping strip 27 is provided at the bottom end of the inner wall of the through hole 12. The inner side of the inner scraping strip 27 fits with the surface of the heating tube 25. Specifically, after the distillation is completed, a large amount of precipitation and crystallization generated during the distillation process adheres to the surface of the heating tube 25. As the pre-heating plate 11 sinks, the inner scraping strip 27 inside the through hole 12 can contact the surface of the heating tube 25, thereby scraping off the crystals on the heating tube 25 and finally accumulating them in the collecting tank 24. The subsequent rinsing and cleaning process is achieved through the slag removal port 23 at the bottom of the collecting tank 24.

[0031] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An evaporation device for seawater desalination, comprising an evaporation device body, characterized in that: The evaporation device body comprises an evaporation tank (1), a heating module (3), a steam pipeline assembly (4), a seawater pipeline assembly (5) and a cooling assembly (6); the heating module (3) is provided at the inner bottom of the evaporation tank (1); a preheating plate (11) is installed on the top of the heating module (3); the surface of the preheating plate (11) is connected to a portion of the steam pipeline assembly (4); a guide rod (2) is installed on the top of the evaporation tank (1); the bottom of the guide rod (2) passes through the surface of the preheating plate (11); the top of the evaporation tank (1) is connected to the seawater pipeline assembly (5); the seawater pipeline assembly (5) ) and the steam pipeline assembly (4) are provided with a cooling assembly (6), the bottom of the evaporator (1) is provided with a slag removal port (23), and the top and bottom of the evaporator (1) are both tapered structures, the inner side of the preheating plate (11) is provided with a through hole (12), the inner side of the preheating plate (11) is provided with a heating cavity (28), the heating module (3) has a plurality of heating tube (25) assemblies, each of the heating tubes (25) is inserted from the inside of the through hole (12), and the bottom end of the inner wall of the through hole (12) is provided with an inner scraper (27), and the inner side of the inner scraper (27) is in contact with the surface of the heating tube (25).

2. The evaporation device for seawater desalination according to claim 1, characterized in that: The steam pipeline assembly (4) comprises a steam guide pipe (8) and a lifting sleeve (9); a steam inlet (7) is provided on the top of the evaporation tank (1); a lifting pipe (10) is inserted into the inner side of the lifting sleeve (9); and the bottom of the lifting pipe (10) is connected to the surface of the preheating plate (11).

3. The evaporation device for seawater desalination according to claim 2, characterized in that: The top of the steam inlet (7) is connected to one end of the steam guide pipe (8), and the other side of the surface of the preheating plate (11) is connected to the exhaust pipe (15), and the exhaust pipe (15) is partially connected to the cooling component (6).

4. The evaporation device for seawater desalination according to claim 3, characterized in that: The seawater pipeline assembly (5) comprises a nozzle (16) and a seawater delivery pipe (17). The top end of the seawater delivery pipe (17) penetrates from the top of the evaporation tank (1) toward the interior, and the top end of the nozzle (16) is connected to the interior of the seawater delivery pipe (17).

5. The evaporation device for seawater desalination according to claim 4, characterized in that: The cooling assembly (6) comprises a cooling pipe (20) and a sandwich pipe (19). A heat exchange channel (22) is provided inside the sandwich pipe (19). The top of one end of the sandwich pipe (19) is connected to the seawater delivery pipe (17).

6. The evaporation device for seawater desalination according to claim 5, characterized in that: The cooling pipe (20) is connected to the discharge pipe (15), and a plurality of heat conducting plates (21) are provided on the surface of the cooling pipe (20), and a hole structure is provided on the surface of each heat conducting plate (21). The cooling pipe (20) is in direct contact with the seawater flowing inside the heat exchange channel (22) through the heat conducting plates (21) on the surface. The bottom of the sandwich pipe (19) is connected to a seawater injection port (18), and both ends of the sandwich pipe (19) are welded to the surface of the cooling pipe (20) as a whole.

7. The evaporation device for seawater desalination according to claim 3, characterized in that: A floating plate (13) is provided on the top side of the preheating plate (11), and a fitting vertebral plate (14) is provided on the bottom of the floating plate (13).

8. The evaporation device for seawater desalination according to claim 7, characterized in that: A plurality of through holes (12) are provided, the lifting pipe (10) and the discharge pipe (15) are both connected to the interior of the heating cavity (28), and the guide rod (2) passes through the interior of two of the through holes (12).

9. The evaporation device for seawater desalination according to claim 7, characterized in that: A collecting tank (24) is provided at the bottom inside the evaporation tank (1), the bottom of the heating tube (25) is fixed to the surface of the collecting tank (24) as a whole, and a supporting base (26) is provided at the bottom of the evaporation tank (1).

10. The evaporation device for seawater desalination according to claim 9, characterized in that: The fitting vertebral plate (14) and the collecting trough (24) have the same size specifications.

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