Marine high-power seawater desalination equipment

Abstract

The invention relates to the technical field of seawater desalination, in particular to marine high-power seawater desalination equipment which comprises a main frame, a plurality of distillation cylinders are fixedly mounted on the inner side wall of the main frame, a water conveying pipe is communicated between every two adjacent distillation cylinders, a plurality of first electric push rods are fixedly mounted at the top of the inner side wall of the main frame, and a plurality of second electric push rods are fixedly mounted at the top of the inner side wall of the main frame. First piston plates are fixedly mounted at the telescopic ends of the bottoms of the multiple first electric push rods, the multiple first piston plates are slidably arranged in inner cavities of the corresponding distillation cylinders, two air holes are formed in the tops of the multiple first piston plates in a penetrating mode, and one-way valves are fixedly mounted in the multiple air holes; cooling water pipes are fixedly mounted among the plurality of distillation cylinders, piston plates I move upwards to expand the space of inner cavities of the distillation cylinders, so that the air pressure of the inner cavities of the distillation cylinders is reduced, and the boiling point of seawater sucked into the distillation cylinders is also gradually reduced along with the gradual reduction of the air pressure of the inner cavities of the distillation cylinders, so that the distillation speed of the seawater is increased to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of seawater desalination, and specifically to a marine high-power seawater desalination device. Background Technique

[0002] As an important means to alleviate the global shortage of fresh water resources, seawater desalination technology plays a key role in the water supply systems of coastal areas, islands and arid regions. As a classic process among them, the principle and application background of multi-stage flash distillation are closely related to the progress of industrial technology and the need to address the water resource crisis. The core of MSF technology lies in utilizing the physical property that the boiling point of seawater is different under different pressures. By introducing the heated seawater into a series of flash chambers with gradually decreasing pressures, part of the seawater evaporates due to the sudden drop in pressure at each stage. The generated steam is condensed to become fresh water, and the remaining concentrated brine enters the next stage for continued evaporation, thus achieving efficient separation of salt and water. This process does not require the seawater to boil completely, but significantly reduces energy consumption through the "flash distillation" phenomenon, while avoiding the problem of high-concentration salt scaling in traditional distillation methods. The current multi-stage flash seawater desalination equipment must be equipped with multiple sets of pressure-reducing pumps, water pumps and check valve assemblies to meet the operation requirements of each flash chamber. This approach increases the purchase cost of the multi-stage flash seawater desalination equipment to a certain extent; therefore, the present invention provides a marine high-power seawater desalination device. Summary of the Invention

[0003] The purpose of the present invention is to provide a marine high-power seawater desalination device to solve the problems raised in the above background technique.

[0004] The technical solution of the present invention is: a marine high-power seawater desalination device, including a main frame body. A plurality of distillation cylinders are fixedly installed on the inner side wall of the main frame body. A water delivery pipe is connected between every two adjacent distillation cylinders. A plurality of electric push rods I are fixedly installed at the top of the inner side wall of the main frame body. The telescopic ends of the bottoms of the plurality of electric push rods I are fixedly installed with piston plates I, and the plurality of piston plates I are respectively slidably arranged in the inner cavities of the corresponding distillation cylinders. Two air holes are respectively formed through the tops of the plurality of piston plates I. One-way valves are fixedly installed inside the plurality of air holes. A cooling water pipe is fixedly installed between the plurality of distillation cylinders.

[0005] Preferably, a plurality of electric push rods II are fixedly installed at the bottom of the inner side wall of the main frame body. The telescopic ends of the plurality of electric push rods II are fixedly installed with piston plates II. Partition plates I and partition plates II are respectively welded to the upper and lower ends of the plurality of piston plates II. Through holes are respectively formed in the side walls of the plurality of partition plates II. After the sea water level in the inner cavity of the leftmost distillation cylinder reaches the set value, the set electric push rod II drives the piston plate II to move upward, so that the piston plate II blocks the water inlet on the left side of the distillation cylinder, and a sealed space is formed in the inner cavity of the distillation cylinder. During this process, the space compression generated by the upward movement of the piston plate II causes the excess gas in the distillation cylinder to be discharged through the one-way valve of the corresponding air hole.

[0006] Preferably, the input end of the cooling water pipe is communicated with a water inlet pipe, the output end of the cooling water pipe is communicated with a water outlet pipe, the water outlet pipe is communicated with a heater on the side far away from the cooling water pipe, and the output end of the heater is communicated with one of the distillation cylinders through a pipeline. Before use, the water inlet pipe is communicated with an external marine seawater filtering device. During use, the electric push rod I on the leftmost side drives the corresponding piston plate I to move upward, so that the inner cavity of the leftmost distillation cylinder is in a negative pressure state. The seawater filtered by the external marine seawater filtering device enters the heater through the water inlet pipe, the cooling water pipe and the water outlet pipe in turn under the action of the air pressure difference. Under the action of the heater, the seawater is heated to the preset temperature and enters the inner cavity of the leftmost distillation cylinder.

[0007] Preferably, water receiving plates are fixedly installed in the inner cavities of the plurality of distillation cylinders. A recovery water pipe is communicated between the bottoms of the plurality of water receiving plates. The water mist generated by seawater distillation condenses into water droplets after contacting the outer surface of the cooling water pipe. As the water droplets continuously gather to form liquid droplets and drip downward onto the top of the water receiving plate. Subsequently, the one-way component at the connection between the water receiving plate and the recovery water pipe is opened, and the collected distilled water enters the external marine seawater circulation device through the recovery water pipe for subsequent treatment.

[0008] Preferably, a plurality of extension sleeves are slidably arranged at the bottom of the inner cavity of the cooling water pipe. Return springs are respectively wound around the outer peripheral walls of the plurality of extension sleeves, and the plurality of return springs are respectively connected between the top ring plates of the corresponding extension sleeves and the inner side wall of the inner cavity of the cooling water pipe. A plurality of connecting rods are welded to the top of the inner cavity of the cooling water pipe. The bottoms of the plurality of connecting rods are welded with extrusion cylinders, and two water troughs are respectively formed through the tops of the plurality of extrusion cylinders.

[0009] Preferably, sealing sleeves are connected between the top ring plates of several of the extension sleeves and the bottom of the inner cavity of the cooling water pipe. During the upward movement of the first piston plate, which causes the air pressure in the inner cavity of the distillation cylinder to decrease, the corresponding extension sleeves inside the cooling water pipe slide downward under the action of the pressure difference, causing part of the extension sleeves to be exposed in the inner cavity of the distillation cylinder. This action increases the distillation area of the cooling water pipe to a certain extent, thereby improving the distillation speed of this device. After the distillation operation of this distillation cylinder is completed, the set extension sleeves reset upward under the elastic force of the return springs, and the water droplets condensed by distillation on their outer surfaces are scraped off by the outer wall of the cooling water pipe during the upward movement of the extension sleeves. This action facilitates the rapid collection of the droplets.

[0010] Preferably, the left inlet of each of the water delivery pipes is higher than the corresponding right outlet.

[0011] The present invention provides a marine high-power seawater desalination device through improvement. Compared with the prior art, it has the following improvements and advantages: 1. The upward movement of the first piston plate expands the inner cavity space of the distillation cylinder, thereby reducing the air pressure in the inner cavity of the distillation cylinder. As the air pressure in the inner cavity of the distillation cylinder gradually decreases, the boiling point of the seawater inhaled into it also gradually decreases. This action improves the distillation speed of the seawater to a certain extent. When this device is in use, only the cooperation of the first electric push rod and the second electric push rod is required to achieve the pumping in, pumping out, and pressure-reducing distillation operations of the seawater in the distillation cylinder. This action reduces the purchase cost of the device to a certain extent.

[0012] 2. During the process of the air pressure in the inner cavity of the distillation cylinder decreasing, the corresponding extension sleeves inside the cooling water pipe slide downward under the action of the pressure difference, causing part of the extension sleeves to be exposed in the inner cavity of the distillation cylinder. This action increases the distillation area of the cooling water pipe to a certain extent, thereby improving the distillation speed of this device; 3. After the distillation operation of this distillation cylinder is completed, the set extension sleeves reset upward under the elastic force of the return springs, and the water droplets condensed by distillation on their outer surfaces are scraped off by the outer wall of the cooling water pipe during the upward movement of the extension sleeves. This action facilitates the rapid collection of the droplets; 4. During the reset process of the extension sleeves, the seawater heated up due to the distillation operation in their inner cavities is extruded out of the inner cavities of the extension sleeves under the action of the extrusion cylinders. This action facilitates the subsequent re-entry of low-temperature seawater into the inner cavities of the extension sleeves, which ensures the distillation rate of the extension sleeves to a certain extent.

[0013] 5. Moreover, due to the structural design of the second piston plate, the second electric push rod, and the distillation cylinder with both upper and lower ends being through, when salt is precipitated from the seawater during evaporation and adheres to the inner walls of the second piston plate and the distillation barrel, the adhered crystals can be scraped off by the up and down movement of the second piston plate. Then the second piston plate as a whole extends out of the bottom of the distillation cylinder, which is convenient for cleaning it. The production cost is low and the maintenance is convenient. Description of the Drawings

[0014] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments: Figure 1 is a schematic three-dimensional structure diagram of the present invention; Figure 2 is a schematic structure diagram of the distillation cylinder of the present invention; Figure 3 is a schematic diagram of the inner cavity structure of the distillation cylinder of the present invention; Figure 4 is a schematic structure diagram of the first piston plate of the present invention; Figure 5 is a schematic structure diagram of the slot hole of the present invention; Figure 6 is a schematic structure diagram of the water receiving plate of the present invention; Figure 7 is the present invention Figure 6 schematic enlarged view of the structure of part A.

[0015] Explanation of reference numerals in the drawings: 1, main frame; 2, distillation cylinder; 3, water delivery pipe; 4, first electric push rod; 5, first piston plate; 6, air hole; 7, one-way valve; 8, cooling water pipe; 9, second electric push rod; 10, second piston plate; 11, first partition; 12, second partition; 13, slot hole; 14, water inlet pipe; 15, water outlet pipe; 16, heater; 17, water receiving plate; 18, recovery water pipe; 19, extension sleeve; 20, return spring; 21, connecting rod; 22, extrusion cylinder; 23, water tank; 24, sealing sleeve. Specific embodiments

[0016] The present invention will be described in detail below. The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0017] The present invention provides a marine high-power seawater desalination device through improvement. The technical solution of the present invention is: As Figures 1-7As shown in the figure, a high-power marine desalination device includes a main frame 1. A number of distillation cylinders 2 are fixedly installed on the inner side wall of the main frame 1. A water delivery pipe 3 is connected between every two adjacent distillation cylinders 2. The water inlet at the left end of a number of water delivery pipes 3 is higher than the corresponding water outlet at the right side. A number of electric push rods 1 are fixedly installed at the top of the inner side wall of the main frame 1. The telescopic ends at the bottom of a number of electric push rods 1 are fixedly installed with piston plates 1. And a number of piston plates 1 are respectively slidably arranged in the inner cavities of the corresponding distillation cylinders 2. Two air holes 6 are respectively formed through the tops of a number of piston plates 1. Check valves 7 are fixedly installed inside a number of air holes 6. A cooling water pipe 8 is fixedly installed between a number of distillation cylinders 2. The input end of the cooling water pipe 8 is connected with a water inlet pipe 14. The output end of the cooling water pipe 8 is connected with a water outlet pipe 15. One side of the water outlet pipe 15 far away from the cooling water pipe 8 is connected with a heater 16. And the output end of the heater 16 is connected with one of the distillation cylinders 2 through a pipeline. Before use, the water inlet pipe 14 is connected with an external marine seawater filtration device. During use, the electric push rod 1 at the leftmost side drives the corresponding piston plate 1 to move upward, so that the inner cavity of the leftmost distillation cylinder 2 is in a negative pressure state. The seawater filtered by the external marine seawater filtration device enters the heater 16 through the water inlet pipe 14, the cooling water pipe 8 and the water outlet pipe 15 in sequence under the action of the air pressure difference. Under the action of the heater 16, the seawater is heated to a preset temperature and enters the inner cavity of the leftmost distillation cylinder 2.

[0018] Furthermore, a number of electric push rods 2 are fixedly installed at the bottom of the inner side wall of the main frame 1. The telescopic ends at the top of a number of electric push rods 2 are fixedly installed with piston plates 2. Partition plates 1 are respectively welded at the upper and lower ends of a number of piston plates 2. Groove holes 13 are respectively formed through the side walls of a number of partition plates 2. After the seawater level in the inner cavity of the leftmost distillation cylinder 2 reaches the set value, the set electric push rod 2 drives the piston plate 2 to move upward, so that the piston plate 2 blocks the water inlet at the left side of the distillation cylinder 2, and a sealed space is formed in the inner cavity of the distillation cylinder 2. During this process, the space compression generated by the upward movement of the piston plate 2 enables the redundant gas in the distillation cylinder 2 to be discharged through the check valve 7 of the corresponding air hole 6. Water receiving plates 17 are fixedly installed in the inner cavities of a number of distillation cylinders 2. A recovery water pipe 18 is connected between the bottoms of a number of water receiving plates 17. The water mist generated by seawater distillation condenses into water droplets after contacting the outer surface of the cooling water pipe 8. As the water droplets continuously gather to form liquid droplets and drip downward onto the top of the water receiving plate 17. Subsequently, the one-way component at the connection between the water receiving plate 17 and the recovery water pipe 18 is opened, and the collected distilled water enters the external marine seawater circulation device through the recovery water pipe 18 for subsequent treatment.

[0019] Furthermore, a plurality of extension sleeves 19 are slidably arranged at the bottom of the inner cavity of the cooling water pipe 8. A reset spring 20 is wound around the outer peripheral wall of each of the plurality of extension sleeves 19, and the plurality of reset springs 20 are respectively connected between the top ring plate of the corresponding extension sleeve 19 and the inner cavity side wall of the cooling water pipe 8. A plurality of connecting rods 21 are welded to the top of the inner cavity of the cooling water pipe 8. A pressing cylinder 22 is welded to the bottom of each of the plurality of connecting rods 21. Two water grooves 23 are respectively formed through the top of each of the plurality of pressing cylinders 22. A sealing sleeve 24 is connected between the top ring plate of each of the plurality of extension sleeves 19 and the bottom of the inner cavity of the cooling water pipe 8. During the process that the first piston plate 5 moves upward, causing the air pressure in the distillation cylinder 2 to decrease, the corresponding extension sleeve 19 inside the cooling water pipe 8 slides downward under the action of the pressure difference, so that part of the extension sleeve 19 is exposed in the inner cavity of the distillation cylinder 2. This action increases the distillation area of the cooling water pipe 8 to a certain extent, thereby improving the distillation speed of this device; after the distillation operation of this distillation cylinder 2 is completed, the set extension sleeve 19 is reset upward under the elastic force of the reset spring 20, and the water droplets condensed by distillation on its outer surface are scraped off by the outer wall of the cooling water pipe 8 during the upward movement of the extension sleeve 19. This action facilitates the rapid collection of the liquid droplets.

[0020] Working principle: Before use, connect the water inlet pipe 14 to an external marine seawater filtration device; during use, the first electric push rod 4 on the far left drives the corresponding first piston plate 5 to move upward, making the inner cavity of the leftmost distillation cylinder 2 in a negative pressure state; the seawater filtered by the external marine seawater filtration device enters the heater 16 successively through the water inlet pipe 14, the cooling water pipe 8, and the water outlet pipe 15 under the action of the pressure difference. Under the action of the heater 16, the seawater is heated to a preset temperature and enters the inner cavity of the leftmost distillation cylinder 2; after the seawater level in the inner cavity of the leftmost distillation cylinder 2 reaches the set value, the second electric push rod 9 drives the second piston plate 10 to move upward, making the second piston plate 10 block the water inlet on the left side of the distillation cylinder 2, forming a closed space in the inner cavity of the distillation cylinder 2; during this process, the space compression generated by the upward movement of the second piston plate 10 causes the excess gas in the distillation cylinder 2 to be discharged through the one-way valve 7 of the corresponding air hole 6; subsequently, the first electric push rod 4 drives the first piston plate 5 to move upward again. Since the inner cavity of the distillation cylinder 2 is in a closed state at this time, the upward movement of the first piston plate 5 expands the inner cavity space of the distillation cylinder 2, thereby reducing the air pressure in the inner cavity of the distillation cylinder 2. As the air pressure in the inner cavity of the distillation cylinder 2 gradually decreases, the boiling point of the seawater inhaled inside also gradually decreases, which to a certain extent improves the distillation speed of the seawater; the water mist generated by seawater distillation condenses into water droplets after contacting the outer surface of the cooling water pipe 8. As the water droplets continuously gather to form liquid droplets and drip downward onto the top of the water receiving plate 17; subsequently, the one-way component at the connection between the water receiving plate 17 and the recovery water pipe 18 is opened, and the collected distilled water enters the external marine seawater circulation device through the recovery water pipe 18 for subsequent treatment; then the second electric push rod 9 drives the second piston plate 10 to move upward again. After the slot 13 opened on the side wall of the second partition 12 is aligned with the water inlet of the water delivery pipe 3, the seawater in the leftmost distillation cylinder 2 enters the adjacent distillation cylinder 2 through the water delivery pipe 3 for secondary distillation operation; then the leftmost distillation cylinder 2 repeats the above operation steps to achieve continuous distillation treatment of seawater; During the process of the upward movement of the first piston plate 5, which causes the air pressure in the inner cavity of the distillation cylinder 2 to decrease, the corresponding extension sleeve 19 inside the cooling water pipe 8 slides downward under the action of the pressure difference, making part of the extension sleeve 19 exposed in the inner cavity of the distillation cylinder 2. This increases the distillation area of the cooling water pipe 8 to a certain extent, thereby improving the distillation speed of this device; after the distillation operation of this distillation cylinder 2 is completed, the set extension sleeve 19 is reset upward under the elastic force of the return spring 20, and the water droplets condensed by distillation on its outer surface are scraped off by the outer wall of the cooling water pipe 8 during the upward movement of the extension sleeve 19. This facilitates the rapid collection of liquid droplets; at the same time, during the reset process of the extension sleeve 19, the seawater heated due to the distillation operation in its inner cavity is extruded out of the inner cavity of the extension sleeve 19 under the action of the extrusion cylinder 22. This facilitates the subsequent entry of low-temperature seawater into the inner cavity of the extension sleeve 19, which ensures the distillation rate of the extension sleeve 19 to a certain extent.

[0021] The foregoing description enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-power seawater desalination device for a ship, comprising a main frame (1), characterized in that: A plurality of distillation cylinders (2) are fixedly mounted on the inner wall of the main frame (1), and a water pipe (3) is connected between each two adjacent distillation cylinders (2). A plurality of electric push rods (4) are fixedly mounted on the top of the inner wall of the main frame (1), and a piston plate (5) is fixedly mounted on the bottom telescopic end of each of the electric push rods (4), and each of the piston plates (5) is slidably arranged in the inner cavity of the corresponding distillation cylinder (2). Two air holes (6) are penetrated through the top of each of the piston plates (5), and each of the air holes (6) is fixedly mounted with a one-way valve (7). A cooling water pipe (8) is fixedly mounted between each of the distillation cylinders (2).

2. A high-power seawater desalination device for ships according to claim 1, characterized in that: A plurality of electric push rods (9) are fixedly mounted on the bottom of the inner wall of the main frame (1), a plurality of piston plates (10) are fixedly mounted on the top telescopic ends of the plurality of electric push rods (9), a plurality of partition plates (11) and a plurality of partition plates (12) are respectively welded on the upper and lower ends of the plurality of piston plates (10), and a plurality of slots (13) are penetrated through the side walls of the plurality of partition plates (12).

3. A high-power seawater desalination device for ships according to claim 1, characterized in that: The input end of the cooling water pipe (8) is connected to a water inlet pipe (14), the output end of the cooling water pipe (8) is connected to a water outlet pipe (15), the side of the water outlet pipe (15) away from the cooling water pipe (8) is connected to a heater (16), and the output end of the heater (16) is connected to one of the distillation cylinders (2) through a pipeline.

4. A high-power seawater desalination device for ships according to claim 1, characterized in that: A water receiving plate (17) is fixedly installed in the inner cavity of the plurality of distillation cylinders (2), and a recovery water pipe (18) is connected between the bottoms of the plurality of water receiving plates (17).

5. The high-power seawater desalination equipment for ships according to claim 1, characterized in that: A plurality of extension sleeves (19) are slidably arranged at the bottom of the inner cavity of the cooling water pipe (8), and a plurality of return springs (20) are wound around the outer peripheral walls of the plurality of extension sleeves (19), and the plurality of return springs (20) are respectively connected between the corresponding top ring plates of the extension sleeves (19) and the side walls of the inner cavity of the cooling water pipe (8), and a plurality of connecting rods (21) are welded to the top of the inner cavity of the cooling water pipe (8), and a plurality of extrusion columns (22) are welded to the bottom of the plurality of connecting rods (21), and two water grooves (23) are provided through the tops of the plurality of extrusion columns (22).

6. A high-power seawater desalination device for ships according to claim 5, characterized in that: A sealing sleeve (24) is connected between the top ring plates of the plurality of extension sleeves (19) and the bottom of the inner cavity of the cooling water pipe (8).

7. A high-power seawater desalination device for ships according to claim 1, characterized in that: The water inlets at the left ends of the plurality of water delivery pipes (3) are all higher than the corresponding water outlets at the right ends.

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