A marine seawater desalination system

Abstract

The present application relates to the technical field of water treatment, and provides a marine seawater desalination system, including a heater and a condenser, a connecting pipe for transferring steam is connected between the heater and the condenser, the inlet end of the connecting pipe is connected to the inside of the heater, and the outlet end of the connecting pipe is connected to the inside of the condenser; a first dividing bar is provided inside the condenser, and a plurality of first dividing bars are arranged at intervals along the height direction, and a first opening is formed between the two ends of each first dividing bar and the inner wall of the condenser; two second dividing bars are provided between two adjacent first dividing bars, and the ends of the two second dividing bars that are far away from each other are connected to the inner wall of the condenser, and a second opening is formed between the ends of the two second dividing bars that are close to each other. A marine seawater desalination system of the present application can improve the steam-water separation effect of steam.

Description

Technical Field

[0001] The present application relates to the technical field of water treatment, and in particular to a marine seawater desalination system. Background Art

[0002] Ships consume a lot of fresh water during navigation, mainly for crew life, power system operation and equipment cooling. The traditional practice is to reserve enough fresh water before departure, but this not only increases the ship's load capacity, but also increases operating costs. With the advancement of technology, the application of marine desalination systems is becoming more and more widespread. This system can directly convert seawater into fresh water during navigation, effectively solving the problem of fresh water supply and significantly improving the autonomy and economy of ships.

[0003] Existing seawater desalination methods mainly include electrodialysis, distillation, reverse osmosis, and seawater freezing. Among them, the distillation method is to heat the seawater through a heater (such as a boiler, etc.) to make it boil and vaporize to form steam, and then condense the steam into fresh water through a condenser. Specifically, after the steam enters the condenser, the coolant in the condenser exchanges heat with it, absorbs the heat in the steam, separates the water in the steam and condenses it into water, thereby obtaining the required fresh water. This method has low requirements on the quality of the raw seawater, and the production capacity of the device is large. It is one of the current mainstream technologies for seawater desalination.

[0004] However, the existing steam condensation method still has some shortcomings, especially in terms of the steam-water separation effect. Although steam can be partially condensed into water in the condenser, in fact, the steam-water separation effect is not ideal, and there is still a large amount of water in the discharged steam, which not only causes energy waste, but also reduces the overall fresh water production. Therefore, how to improve the steam-water separation effect of steam has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] In order to improve the steam-water separation effect of steam, the present application provides a marine seawater desalination system.

[0006] The present application provides a marine seawater desalination system adopting the following technical solutions:

[0007] A marine seawater desalination system comprises a heater and a condenser, wherein a connecting pipe for transferring steam is connected between the heater and the condenser, wherein the inlet end of the connecting pipe is connected to the interior of the heater, and the outlet end of the connecting pipe is connected to the interior of the condenser; a first dividing bar is provided inside the condenser, wherein a plurality of the first dividing bars are arranged at intervals along the height direction, and a first opening is formed between the two ends of each of the first dividing bars and the inner wall of the condenser; two second dividing bars are provided between two adjacent first dividing bars, wherein the ends of the two second dividing bars which are far away from each other are connected to the inner wall of the condenser, and a second opening is formed between the ends of the two second dividing bars which are close to each other.

[0008] By adopting the above technical solution, when desalinating seawater, seawater is introduced into the heater for heating and evaporation, and the generated steam is transferred to the inside of the condenser through the connecting pipe. After the steam enters the inside of the condenser, it is divided into two under the action of the first dividing strip, and flows from the two first ports to the first dividing strip and the two second dividing strips adjacent to the top, respectively. Then the two steams collide at the second ports, reducing the flow rate of the two steams. The two reunited steams continue to flow upward from the second port, and the combination of multiple first dividing strips and multiple groups of second dividing strips forms multiple second ports, so that the steam can be divided into two multiple times in the condenser and collide multiple times, greatly reducing the flow rate of the steam in the condenser, increasing the residence time of the steam in the condenser, and helping the water in the steam to fall under the action of gravity, thereby improving the steam-water separation effect.

[0009] Optionally, the outlet end of the connecting pipe is connected to the interior of the condenser from the bottom of the condenser, the condenser is connected to an exhaust pipe for discharging steam to the outside, and the inlet end of the exhaust pipe is connected to the interior of the condenser from the top of the condenser; the second dividing strip gradually decreases in height from the end farthest from the second opening to the end close to the second opening.

[0010] By adopting the above technical solution, the height of the second dividing strip gradually decreases from the end away from the second opening to the end close to the second opening, so that the condensed fresh water can flow down to the second opening along the surface of the second dividing strip, so as to collect the fresh water uniformly. In addition, the height of the second dividing strip gradually decreases from the end away from the second opening to the end close to the second opening, thereby expanding the space between the second opening and the first dividing strip adjacent to the top, so that when the steam flows from the second opening to this space, the flow rate slows down, which is helpful for steam-water separation.

[0011] Optionally, a collecting groove for collecting fresh water is formed on the top wall of the first dividing strip, and the collecting groove is opposite to the second opening adjacent to the top; a collecting box is connected to the outer wall of the condenser, a connecting hole connected to the collecting groove is formed on the inner wall of the collecting box, and a collecting pipe for discharging fresh water to the outside is connected to the collecting box, an inlet end of the collecting pipe is connected to the inside of the collecting box, and a height of the inlet end of the collecting pipe is higher than a height of the connecting hole.

[0012] By adopting the above technical solution, after the two streams of steam collide and decelerate at the second port, the condensed fresh water falls into the collection tank and can be discharged outward through the connecting hole, the collection box and the collection pipe in turn, thereby collecting the fresh water. The height of the inlet end of the collection pipe is set to be higher than the height of the connecting hole. On the one hand, this design can keep fresh water in the collection tank to seal the connecting hole and reduce the possibility of steam leaking out of the connecting hole. On the other hand, a certain amount of fresh water is maintained in the collection tank, so as to control the temperature of the first dividing strip, so that the temperature of the position where the first dividing strip is located in the collection tank is maintained within a certain range (not exceeding 100°), so that the temperature difference between the position where the first dividing strip is located in the collection tank and the steam can be maintained. When the two streams of steam collide at the second port, they exchange heat with the fresh water in the collection tank, making it easier to form water droplets, thereby further improving the steam-water separation effect of the steam.

[0013] Optionally, a heat exchange cavity is provided inside the first dividing strip, and an embedding groove connected to the heat exchange cavity is provided on the inner wall of the collecting tank, and a cooling fin is embedded in the embedding groove, one side of the cooling fin extends into the heat exchange cavity, and the other side extends into the collecting tank; the first dividing strip is connected to an air supply pipe for conveying air into the heat exchange cavity.

[0014] By adopting the above technical solution, the heat dissipation speed of the fresh water in the collecting tank is improved by the heat dissipation fins, so that the heat of the fresh water in the collecting tank is quickly transferred to the heat exchange chamber, and air is supplied to the heat exchange chamber through the air supply pipe to discharge the heat, thereby improving the heat dissipation effect of the fresh water in the collecting tank, thereby maintaining a temperature difference between the fresh water and the steam in the collecting tank, and further improving the steam-water separation effect of the steam.

[0015] Optionally, a heat exchange zone is formed between the first dividing strip and two second dividing strips adjacent to the bottom, and a heat exchange tube is provided in the heat exchange zone, and the heat exchange tube is extended in a serpentine shape in the heat exchange zone; the condenser is connected to a delivery pipe for conveying seawater, the inlet end of the heat exchange tube passes through the condenser and is connected to the delivery pipe, and the outlet end of the heat exchange tube passes through the condenser and is connected to the heater.

[0016] By adopting the above technical solution, the design of the heat exchange tube, on the one hand, the seawater is passed into the heat exchange zone through the heat exchange tube, and heat is exchanged with the steam in the heat exchange zone, absorbing the heat in the steam, making the water in the steam more easily condensed into water, and improving the steam-water separation effect of the steam. On the other hand, the seawater is first sent to the heat exchange zone through the heat exchange tube for heat exchange before being sent to the heater, thereby preheating the seawater and reducing the heating pressure of the subsequent heater on the seawater. The heat exchange tube is extended in a serpentine shape to increase the contact area between the heat exchange tube and the steam, thereby increasing the residence time of the seawater in the heat exchange zone, so that the seawater can fully absorb the heat in the steam and improve the energy utilization rate.

[0017] Optionally, a shielding arc sheet for covering the second opening is slidably installed in the heat exchange zone, and the inner arc surface of the shielding arc sheet is opposite to the collection groove of the first dividing strip adjacent to the bottom; under normal conditions, the two sides of the shielding arc sheet are respectively abutted against the two second dividing strips.

[0018] By adopting the above-mentioned technical solution, the two sides of the shielding arc plate are normally in contact with the two second dividing strips respectively, thereby covering the second opening, which can improve the collision effect of the two steams below the second opening. When the two steams collide and merge below the second opening, as the steam is continuously added, the steam squeezes the shielding arc plate, performs work on the shielding arc plate, consumes part of the energy in the steam, and helps to separate the steam from water. The steam contacts the shielding arc plate, and part of it condenses into water on the inner arc surface of the shielding arc plate, and can slide along the inner arc surface of the shielding arc plate to the collection tank below, thereby improving the steam-water separation effect of the steam.

[0019] Optionally, a retaining ring is provided on the outer arc surface of the shielding arc piece, and the retaining ring is annular around the edge of the outer arc surface of the shielding arc piece, and a water storage tank is formed between the retaining ring and the outer arc surface of the shielding arc piece.

[0020] By adopting the above-mentioned technical scheme, after the steam passes over the shielding arc plate and enters the heat exchange zone, it contacts the bottom wall of the first dividing strip at the top of the heat exchange zone for heat exchange, and is partially condensed into water and can fall into the water storage tank, so that some fresh water is stored in the water storage tank, which is used to control the temperature of the shielding arc plate to maintain a temperature difference between the shielding arc plate and the steam. When the two streams of steam collide and merge at the second outlet, they exchange heat with the fresh water in the water storage tank of the shielding arc plate, making it easier to form water droplets, thereby further improving the steam-water separation effect of the steam.

[0021] Optionally, the retaining ring includes a plurality of retaining bars, and the plurality of retaining bars are combined to form the retaining ring, and the retaining bars located on both sides of the shielding arc piece are wavy.

[0022] By adopting the above technical solution, the baffles on both sides of the shielding arc are set to be wavy, which increases the contact area between the shielding arc and the fresh water in the water storage tank, thereby improving the heat exchange efficiency between the shielding arc and the fresh water in the water storage tank.

[0023] Optionally, an adjustment seat is installed in the heat exchange area, and an adjustment cavity is opened in the adjustment seat; the heat exchange tube includes a first heat exchange part and a second heat exchange part, the inlet end of the first heat exchange part is connected to the delivery pipe, and the outlet end of the first heat exchange part is connected to the adjustment seat and communicated with the adjustment cavity; the inlet end of the second heat exchange part is connected to the adjustment seat and communicated with the adjustment cavity, and the outlet end of the second heat exchange part is connected to the heater, and the adjustment cavity is provided with an adjustment component for adjusting the seawater flow rate.

[0024] By adopting the above technical solution, the setting of the regulating component is used to adjust the seawater flow rate, so that the entire device can adjust the amount of seawater added according to actual needs. When the amount of steam generated by the heater is large (that is, the consumption of seawater is large), the flow rate of seawater in the heat exchange tube can be increased by the regulating component, which can not only replenish the seawater in the heater in time, but also take away the heat in the steam through more seawater. When the amount of steam generated by the heater is small (that is, the consumption of seawater is small), the flow rate of seawater in the heat exchange tube can be reduced by the regulating component, slowing down the replenishment speed of seawater in the heater, greatly improving the adaptability of the overall structure.

[0025] Optionally, the adjustment assembly includes an adjustment plate, a connecting rod and a return spring, the adjustment plate is slidably installed in the adjustment cavity, one end of the connecting rod is connected to the adjustment plate, and the other end passes through the adjustment seat and is connected to the shielding arc piece; the return spring is installed between the adjustment seat and the shielding arc piece, and the return spring forces the two sides of the shielding arc piece to abut against the two second dividing strips respectively; the adjustment plate is provided with an adjustment hole, and when the two sides of the shielding arc piece abut against the two second dividing strips respectively, the adjustment hole and the outlet end of the first heat exchange part, and the adjustment hole and the inlet end of the second heat exchange part are staggered; when the shielding arc piece is lifted, the two ends of the adjustment hole are respectively connected to the outlet end of the first heat exchange part and the inlet end of the second heat exchange part, and as the shielding arc piece is lifted, the connecting area between the adjustment hole and the outlet end of the first heat exchange part, and between the adjustment hole and the inlet end of the second heat exchange part gradually increases.

[0026] By adopting the above technical solution, under normal conditions, the shielding arc covers the second opening under the action of the reset spring. If the shielding arc is not squeezed open by the steam, it means that the heater does not generate steam or generates less steam. At this time, the adjustment hole and the outlet end of the first heat exchange part, and the adjustment hole and the inlet end of the second heat exchange part are all staggered, so that the adjustment plate closes the heat exchange tube, that is, the heat exchange tube does not transport seawater in this state. If the steam collides and merges at the second opening and squeezes the shielding arc, it means that the heater has started to operate. When the shielding arc is squeezed open, it drives the adjustment plate to slide, forcing the two ends of the adjustment hole to connect to the outlet end of the first heat exchange part and the inlet end of the second heat exchange part respectively, thereby opening the heat exchange tube, so that the heat exchange tube can transport seawater and exchange heat through the seawater, so as to replenish the heat-exchanged seawater to the heater. Moreover, as the heating power of the heater increases, the amount of steam generated increases, so that the steam can push the displacement of the sliding shielding arc piece to increase. At this time, the connecting area between the adjusting hole and the outlet end of the first heat exchange part and the connecting area between the adjusting hole and the inlet end of the second heat exchange part gradually increases, thereby adjusting the seawater flow rate of the heat exchange tube according to the amount of steam generated by the heater, thereby improving the flexibility of the overall structure.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. Through the arrangement of the first dividing strip and the second dividing strip, when desalinating seawater, the seawater is introduced into the heater for heating and evaporation, and the generated steam is transferred to the inside of the condenser through the connecting pipe. After the steam enters the inside of the condenser, it is divided into two under the action of the first dividing strip, and flows from the two first ports to the first dividing strip and the two second dividing strips adjacent to the top, respectively. Then the two streams of steam collide at the second port, reducing the flow rate of the two streams of steam. The two reunited steams continue to flow upward from the second port, and the combination of multiple first dividing strips and multiple groups of second dividing strips forms multiple second ports, so that the steam can be divided into two streams multiple times in the condenser and collide multiple times, which greatly reduces the flow rate of the steam in the condenser, increases the residence time of the steam in the condenser, helps the water in the steam to fall under the action of gravity, and improves the steam-water separation effect;

[0029] 2. Through the setting of the collecting tank and the collecting box, after the two streams of steam collide and decelerate at the second port, the condensed fresh water falls into the collecting tank and can be discharged outward through the connecting hole, the collecting box and the collecting pipe in turn, thereby collecting the fresh water. The height of the inlet end of the collecting pipe is set to be higher than the height of the connecting hole. On the one hand, this design can keep fresh water in the collecting tank to seal the connecting hole and reduce the possibility of steam leaking out of the connecting hole. On the other hand, a certain amount of fresh water is maintained in the collecting tank, so as to control the temperature of the first dividing bar, so that the temperature of the position where the first dividing bar is located in the collecting tank is maintained within a certain range (not exceeding 100°), so that the temperature difference between the position where the first dividing bar is located in the collecting tank and the steam can be maintained. When the two streams of steam collide at the second port, they exchange heat with the fresh water in the collecting tank, making it easier to form water droplets, thereby further improving the steam-water separation effect of the steam;

[0030] 3. Through the setting of the adjustment component, the whole device can adjust the amount of seawater added according to actual needs. When the amount of steam generated by the heater is large (that is, the consumption of seawater is large), the flow rate of seawater in the heat exchange tube can be increased by adjusting the component, which can not only replenish the seawater in the heater in time, but also take away the heat in the steam through more seawater. When the amount of steam generated by the heater is small (that is, the consumption of seawater is small), the flow rate of seawater in the heat exchange tube can be reduced by adjusting the component, slowing down the speed of replenishing seawater in the heater, greatly improving the adaptability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of Example 1;

[0032] Figure 2 is a partial cross-sectional view of the first and second dividing bars of embodiment 1;

[0033] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0034] Figure 4 is a partial cross-sectional view of the communicating hole embodied in Embodiment 1;

[0035] Figure 5 is a schematic diagram of the structure of the heat exchange tube embodied in Example 1;

[0036] Figure 6 is a partial cross-sectional view of the shielding arc sheet according to Embodiment 2;

[0037] Figure 7 is a schematic diagram of the structure of a water storage tank embodied in Embodiment 2;

[0038] Figure 8 This is a schematic diagram of the structure of the adjustment seat embodied in Example 3;

[0039] Fig. 9 It is a partial cross-sectional view of the adjustment component of Example 3.

[0040] Explanation of the reference numerals: 1. condenser; 11. connecting pipe; 12. exhaust pipe; 13. air supply pipe; 14. heat exchange area; 15. heat exchange pipe; 151. first heat exchange part; 152. second heat exchange part; 16. delivery pipe; 17. heat dissipation port; 18. mounting strip; 2. first dividing strip; 21. first opening; 22. collecting tank; 23. heat exchange cavity; 24. cooling fin; 3. second dividing strip; 31. second opening; 4. collecting box; 41. connecting hole; 42. collecting pipe; 5. shielding arc piece; 51. retaining ring; 511. retaining strip; 52. water storage tank; 53. lifting rod; 6. adjusting seat; 61. adjusting cavity; 7. adjusting assembly; 71. adjusting plate; 711. adjusting hole; 72. connecting rod; 73. reset spring. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1 -Attached Fig. 9 This application is described in further detail.

[0042] Embodiment 1:

[0043] The embodiment of the present application discloses a marine seawater desalination system.

[0044] Reference Figure 1 , Figure 2 A marine seawater desalination system includes a heater and a condenser 1. The heater is configured as a boiler (not shown in the figure). A connecting pipe 11 is connected between the heater and the condenser 1. The inlet end of the connecting pipe 11 is connected to the exhaust end of the heater, and the outlet end of the connecting pipe 11 is connected to the inside of the condenser 1, so that the steam generated by the heater can be transferred to the condenser 1 through the connecting pipe 11.

[0045] In this embodiment, the outlet end of the connecting pipe 11 is connected to the interior of the condenser 1 from the bottom of the condenser 1, and the condenser 1 is connected to an exhaust pipe 12 for discharging steam to the outside. The inlet end of the exhaust pipe 12 is connected to the interior of the condenser 1 from the top of the condenser 1, and the outlet end of the exhaust pipe 12 is used to connect to gas-using equipment on the ship (such as for insulation of ship equipment or for room heating, etc.).

[0046] Reference Figure 2 , Figure 3A plurality of first dividing bars 2 are fixedly installed on the inner wall of the condenser 1, and the plurality of first dividing bars 2 are arranged at intervals in the height direction, and all the first dividing bars 2 are located above the outlet end of the connecting pipe 11, and the first dividing bars 2 are arranged horizontally, and a first opening 21 is formed between the two ends of each first dividing bar 2 and the inner wall of the condenser 1; two second dividing bars 3 are installed between two adjacent first dividing bars 2, and the ends of the two second dividing bars 3 away from each other are fixedly connected to the inner wall of the condenser 1, and a second opening 31 is formed between the ends of the two second dividing bars 3 close to each other; in this embodiment, the height of the second dividing bar 3 gradually decreases from the end away from the second opening 31 to the end close to the second opening 31.

[0047] Reference Figure 3 , Figure 4 , a collecting groove 22 for collecting fresh water is provided on the top wall of each first dividing strip 2, and the collecting groove 22 is opposite to the second opening 31 adjacent to the top; a plurality of collecting boxes 4 are fixedly installed on the outer wall of the condenser 1, and the number of the collecting boxes 4 is arranged corresponding to the number of the first dividing strips 2, and a connecting hole 41 is provided on the inner wall of the collecting box 4, and the connecting hole 41 of the collecting box 4 is connected to the collecting groove 22 corresponding to the first dividing strip 2; a collecting tube 42 for discharging fresh water to the outside is connected to the side wall of the collecting box 4 away from the condenser 1, and the inlet end of the collecting tube 42 is connected to the inside of the collecting box 4; it should be noted that, in the present embodiment, the height of the inlet end of the collecting tube 42 is higher than the height of the connecting hole 41.

[0048] Reference Figure 2 , Figure 3 In this embodiment, a heat exchange cavity 23 is provided inside each first dividing strip 2, and a plurality of heat dissipation ports 17 connected to the heat exchange cavity 23 are provided on the outer wall of the condenser 1. A plurality of air supply pipes 13 are installed on one side of the condenser 1, and the number of the air supply pipes 13 is arranged corresponding to the number of the first dividing strips 2. The outlet end of each air supply pipe 13 penetrates into the condenser 1 and is connected to the heat exchange cavity 23 of the corresponding first dividing strip 2. The inlet end of the air supply pipe 13 is used to connect to the air supply end of an air supply device, and the air supply device may be a blower (not shown in the figure).

[0049] The inner wall of the collecting tank 22 is provided with a plurality of embedding grooves, each of which is connected to the heat exchange cavity 23. A heat dissipation fin 24 is embedded in each embedding groove, one side of the heat dissipation fin 24 extends into the heat exchange cavity 23, and the other side extends into the collecting tank 22; the heat dissipation fin 24 is made of aluminum alloy.

[0050] Reference Figure 2 , Figure 5A delivery pipe 16 for delivering seawater is provided on one side of the condenser 1, and the inlet end of the delivery pipe 16 can be connected to a water pump (not shown in the figure) for extracting seawater. For ease of description, the area between the first dividing bar 2 and the two second dividing bars 3 adjacent to the bottom is defined as a heat exchange zone 14 below, and the combination of multiple first dividing bars 2 and multiple groups of second dividing bars 3 forms multiple heat exchange zones 14. A heat exchange tube 15 is installed in each heat exchange zone 14, and the heat exchange tube 15 is arranged to extend in a serpentine shape in the heat exchange zone 14. The inlet end of the heat exchange tube 15 passes through the condenser 1 and is connected to the delivery pipe 16, and the outlet end of the heat exchange tube 15 passes through the condenser 1 and is connected to the water supply end of the heater.

[0051] The implementation principle of Example 1 of the present application is as follows: when desalinating seawater, seawater is introduced into the heater for heating and evaporation, and the generated steam is transferred from the connecting pipe 11 to the inside of the condenser 1. After the steam enters the inside of the condenser 1, it is divided into two under the action of the first dividing bar 2, and flows from the two first openings 21 to the first dividing bar 2 and the two second dividing bars 3 adjacent to the top, respectively. Then the two streams of steam collide at the second opening 31, reducing the flow rate of the two streams of steam. The two reunited steams continue to flow upward from the second opening 31, and the combination of multiple first dividing bars 2 and multiple groups of second dividing bars 3 forms multiple second openings 31, so that the steam can be divided into two streams multiple times in the condenser 1 and collide multiple times, which greatly reduces the flow rate of the steam in the condenser 1, increases the residence time of the steam in the condenser 1, helps the water in the steam to fall under the action of gravity, and improves the steam-water separation effect.

[0052] The combination of the heat exchange tube 15 and the air supply tube 13 greatly improves the heat exchange effect with the steam, making it easier for the water in the steam to condense into water. In addition, the seawater passes through the heat exchange area 14 of the condenser 1 before being sent to the heater. On the one hand, the seawater exchanges heat with the steam in the heat exchange area 14, absorbs the heat in the steam, and makes it easier for the water in the steam to condense into water. On the other hand, the seawater is preheated in the heat exchange area 14 before being sent to the heater, which reduces the heating pressure of the subsequent heater on the seawater and improves the energy utilization rate.

[0053] Embodiment 2:

[0054] The embodiment of the present application discloses a marine seawater desalination system.

[0055] The difference between the marine seawater desalination system disclosed in the embodiment of the present application and the embodiment 1 is that:

[0056] Reference Figure 6 , Figure 7In this embodiment, a mounting bar 18 is installed in each heat exchange zone 14, and the mounting bar 18 is fixedly installed on the inner wall of the condenser 1; a shielding arc piece 5 for covering the second opening 31 is installed in the heat exchange zone 14, and the shielding arc piece 5 is arc-shaped, and a lifting rod 53 is fixedly installed on the shielding arc piece 5, one end of the lifting rod 53 is fixedly installed on the outer arc surface of the shielding arc piece 5, and the other end is slidably penetrated through the mounting bar 18, and the shielding arc piece 5 is slidably installed in the heat exchange zone 14 through the lifting rod 53; the inner arc surface of the shielding arc piece 5 is opposite to the collecting groove 22 of the first dividing bar 2 adjacent to the bottom. Under normal conditions, the shielding arc piece 5 moves downward under the action of its own gravity, and the two sides of the shielding arc piece 5 are respectively abutted against the two second dividing bars 3 to cover the second opening 31.

[0057] Reference Figure 6 , Figure 7 A retaining ring 51 is fixedly installed on the outer arc surface of the shielding arc piece 5, and the retaining ring 51 is annular around the edge of the outer arc surface of the shielding arc piece 5, and a water storage tank 52 is formed between the retaining ring 51 and the outer arc surface of the shielding arc piece 5; the retaining ring 51 includes a plurality of retaining bars 511, and the plurality of retaining bars 511 are combined to form the above-mentioned retaining ring 51, and the retaining bars 511 located on both sides of the shielding arc piece 5 are wavy; it should be noted that, in the present embodiment, since the retaining bars 511 located on both sides of the shielding arc piece 5 are wavy, when the shielding arc piece 5 abuts against the two second dividing strips 3 under the action of gravity, the shielding arc piece 5 only covers the second opening 31, and does not completely close the second opening 31, that is, the shielding arc piece 5 has the effect of reducing the flow area of ​​the second opening 31.

[0058] The implementation principle of Example 2 of the present application is as follows: Under normal conditions, the two sides of the shielding arc piece 5 are respectively in contact with the two second dividing strips 3, thereby covering the second opening 31, which can improve the deceleration effect of the two streams of steam below the second opening 31. When the two streams of steam collide and merge below the second opening 31, as the steam is continuously added, the steam squeezes the shielding arc piece 5, performs work on the shielding arc piece 5, consumes part of the energy in the steam, and helps to separate the steam from water. The steam contacts the shielding arc piece 5, and part of it condenses into water on the inner arc surface of the shielding arc piece 5, and can slide along the inner arc surface of the shielding arc piece 5 to the collection tank 22 below, thereby improving the steam-water separation effect of the steam.

[0059] After the steam passes over the shielding arc plate 5 and enters the heat exchange area 14, it contacts the bottom wall of the first dividing strip 2 at the top of the heat exchange area 14 for heat exchange, and is partially condensed into water and can fall into the water storage tank 52, so that some fresh water is stored in the water storage tank 52, which is used to control the temperature of the shielding arc plate 5, so that the temperature difference is maintained between the shielding arc plate 5 and the steam. When the two streams of steam collide and merge at the second opening 31, they exchange heat with the fresh water in the water storage tank 52 of the shielding arc plate 5, making it easier to form water droplets, thereby further improving the steam-water separation effect of the steam.

[0060] Embodiment 3:

[0061] The embodiment of the present application discloses a marine seawater desalination system.

[0062] The difference between the marine seawater desalination system disclosed in the embodiment of the present application and the embodiment 2 is that:

[0063] Reference Figure 8 , Fig. 9 In this embodiment, the bottom wall of the first dividing strip 2 is fixedly mounted with an adjustment seat 6 located in the heat exchange area 14, and the adjustment seat 6 and the first dividing strip 2 can be fixedly connected by welding, and an adjustment cavity 61 is opened in the adjustment seat 6; the heat exchange tube 15 includes a first heat exchange part 151 and a second heat exchange part 152, the inlet end of the first heat exchange part 151 passes through the condenser 1 and is connected to the delivery pipe 16, and the outlet end of the first heat exchange part 151 is connected to the adjustment seat 6 and communicates with the adjustment cavity 61; the inlet end of the second heat exchange part 152 is connected to the adjustment seat 6 and communicates with the adjustment cavity 61, and the outlet end of the second heat exchange part 152 passes through the condenser 1 and is connected to the water adding end of the heater.

[0064] The regulating chamber 61 is installed with a regulating component 7 for regulating the seawater flow. In the present embodiment, the regulating component 7 comprises an regulating plate 71, a connecting rod 72 and a reset spring 73. The regulating plate 71 is slidably installed in the regulating chamber 61. The connecting rod 72 is vertically arranged. One end of the connecting rod 72 is fixedly connected to the bottom wall of the regulating plate 71, and the other end passes through the regulating seat 6 and is fixedly connected to the outer arc surface of the shielding arc piece 5. The reset spring 73 is sleeved on the outer peripheral side of the connecting rod 72, one end of the reset spring 73 is fixedly connected to the bottom wall of the adjusting seat 6, and the other end is fixedly connected to the outer peripheral wall of the connecting rod 72. The reset spring 73 forces the two sides of the shielding arc piece 5 to respectively abut against the two second dividing strips 3.

[0065] An adjustment hole 711 penetrating the adjustment plate 71 is provided on the plate surface of the adjustment plate 71. When the two sides of the shielding arc plate 5 are respectively in contact with the two second dividing strips 3, the adjustment hole 711 and the outlet end of the first heat exchange part 151, as well as the adjustment hole 711 and the inlet end of the second heat exchange part 152 are staggered. When the shielding arc plate 5 is lifted, the two ends of the adjustment hole 711 are respectively connected to the outlet end of the first heat exchange part 151 and the inlet end of the second heat exchange part 152, and as the shielding arc plate 5 is lifted, the connection area between the adjustment hole 711 and the outlet end of the first heat exchange part 151, as well as the connection area between the adjustment hole 711 and the inlet end of the second heat exchange part 152 gradually increases.

[0066] The implementation principle of Example 3 of the present application is: the shielding arc plate 5 covers the second opening 31 under the action of the return spring 73. If the shielding arc plate 5 is not squeezed open by the steam, it means that the heater does not generate steam or the amount of steam generated is small. At this time, the adjustment hole 711 and the outlet end of the first heat exchange part 151, and the adjustment hole 711 and the inlet end of the second heat exchange part 152 are offset, so that the adjustment plate 71 closes the heat exchange tube 15, that is, the heat exchange tube 15 does not transport seawater in this state.

[0067] If the steam collides and converges at the second opening 31 and squeezes open the shielding arc piece 5, it means that the heater has started to operate. When the shielding arc piece 5 is squeezed open, it drives the adjustment plate 71 to rise, forcing the two ends of the adjustment hole 711 to respectively connect the outlet end of the first heat exchange part 151 and the inlet end of the second heat exchange part 152, thereby opening the heat exchange tube 15, so that the heat exchange tube 15 can transport seawater and exchange heat through seawater, so as to replenish the heat-exchanged seawater to the heater.

[0068] As the heating power of the heater increases, the amount of steam generated increases, so that the steam can push the shielding arc plate 5 to slide and the displacement increases. At this time, the connecting area between the adjusting hole 711 and the outlet end of the first heat exchange part 151 and the connecting area between the adjusting hole 711 and the inlet end of the second heat exchange part 152 gradually increases, thereby adjusting the seawater flow rate of the heat exchange tube 15 according to the amount of steam generated by the heater, thereby improving the flexibility of the overall structure.

[0069] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A marine seawater desalination system, characterized in that: The invention comprises a heater and a condenser (1), wherein a connecting pipe (11) for transferring steam is connected between the heater and the condenser (1), wherein the inlet end of the connecting pipe (11) is connected to the interior of the heater, and the outlet end of the connecting pipe (11) is connected to the interior of the condenser (1); a first dividing strip (2) is provided inside the condenser (1), wherein a plurality of the first dividing strips (2) are arranged at intervals in the height direction, and a first opening (21) is formed between the two ends of each of the first dividing strips (2) and the inner wall of the condenser (1); and the first opening (21) is formed between the two adjacent first dividing strips (2) and the inner wall of the condenser (1); Two second dividing strips (3) are arranged between the first dividing strips (2), the ends of the two second dividing strips (3) that are away from each other are connected to the inner wall of the condenser (1), and a second opening (31) is formed between the ends of the two second dividing strips (3) that are close to each other; a collecting groove (22) for collecting fresh water is provided on the top wall of the first dividing strip (2), and the collecting groove (22) is directly opposite to the second opening (31) adjacent to the top; the outer wall of the condenser (1) is connected to a collecting box (4), and the collecting box (4 ) is provided with a connecting hole (41) connected to the collecting tank (22); the collecting box (4) is connected to a collecting pipe (42) for discharging fresh water; the inlet end of the collecting pipe (42) is connected to the inside of the collecting box (4); and the height of the inlet end of the collecting pipe (42) is higher than the height of the connecting hole (41); the height of the second dividing strip (3) gradually decreases from the end away from the second opening (31) to the end close to the second opening (31); the first dividing strip (2) is provided with a heat exchange cavity (23) inside, and the collecting The inner wall of the collecting groove (22) is provided with an embedding groove connected to the heat exchange cavity (23), and a heat dissipation fin (24) is embedded in the embedding groove, one side of the heat dissipation fin (24) extends into the heat exchange cavity (23), and the other side extends into the collecting groove (22); the first dividing strip (2) is connected to an air supply pipe (13) for conveying air into the heat exchange cavity (23); a heat exchange area (14) is formed between the first dividing strip (2) and two second dividing strips (3) adjacent to each other at the bottom, and a heat exchange tube (15) is provided in the heat exchange area (14).

2. A marine seawater desalination system according to claim 1, characterized in that: The outlet end of the connecting pipe (11) is connected to the interior of the condenser (1) from the bottom of the condenser (1); the condenser (1) is connected to an exhaust pipe (12) for discharging steam to the outside; the inlet end of the exhaust pipe (12) is connected to the interior of the condenser (1) from the top of the condenser (1).

3. A marine seawater desalination system according to claim 1, characterized in that: The heat exchange tube (15) is arranged to extend in a serpentine shape in the heat exchange area (14); the condenser (1) is connected to a delivery pipe (16) for conveying seawater; the inlet end of the heat exchange tube (15) passes through the condenser (1) and is connected to the delivery pipe (16); the outlet end of the heat exchange tube (15) passes through the condenser (1) and is connected to the heater.

4. A marine seawater desalination system according to claim 3, characterized in that: A shielding arc sheet (5) for covering the second opening (31) is slidably installed in the heat exchange area (14), and the inner arc surface of the shielding arc sheet (5) is directly opposite to the collecting groove (22) of the first dividing strip (2) adjacent to the bottom; under normal conditions, the two sides of the shielding arc sheet (5) are respectively in contact with the two second dividing strips (3).

5. A marine seawater desalination system according to claim 4, characterized in that: The outer arc surface of the shielding arc piece (5) is provided with a retaining ring (51), the retaining ring (51) is annularly arranged around the edge of the outer arc surface of the shielding arc piece (5), and a water storage tank (52) is formed between the retaining ring (51) and the outer arc surface of the shielding arc piece (5).

6. A marine seawater desalination system according to claim 5, characterized in that: The retaining ring (51) comprises a plurality of retaining bars (511), and the plurality of retaining bars (511) are combined to form the retaining ring (51), and the retaining bars (511) located on both sides of the shielding arc sheet (5) are wavy.

7. A marine seawater desalination system according to claim 4, characterized in that: An adjusting seat (6) is installed in the heat exchange area (14), and an adjusting chamber (61) is provided in the adjusting seat (6); the heat exchange tube (15) comprises a first heat exchange part (151) and a second heat exchange part (152); the inlet end of the first heat exchange part (151) is connected to the delivery pipe (16), and the outlet end of the first heat exchange part (151) is connected to the adjusting seat (6) and communicates with the adjusting chamber (61); the inlet end of the second heat exchange part (152) is connected to the adjusting seat (6) and communicates with the adjusting chamber (61), and the outlet end of the second heat exchange part (152) is connected to the heater, and the adjusting chamber (61) is provided with an adjusting component (7) for adjusting the flow of seawater.

8. A marine seawater desalination system according to claim 7, characterized in that: The adjustment assembly (7) comprises an adjustment plate (71), a connecting rod (72) and a return spring (73); the adjustment plate (71) is slidably mounted in the adjustment cavity (61); one end of the connecting rod (72) is connected to the adjustment plate (71), and the other end passes through the adjustment seat (6) and is connected to the shielding arc sheet (5); the return spring (73) is installed between the adjustment seat (6) and the shielding arc sheet (5); the return spring (73) forces the two sides of the shielding arc sheet (5) to respectively abut against the two second dividing strips (3); the adjustment plate (71) is provided with an adjustment hole (711); when the two sides of the shielding arc sheet (5) respectively abut against the two second dividing strips (3), the return spring (73) is pressed against the adjusting hole (711). When connected to two second dividing strips (3), the adjusting hole (711) and the outlet end of the first heat exchange part (151), as well as the adjusting hole (711) and the inlet end of the second heat exchange part (152) are staggered; when the shielding arc plate (5) is lifted, the two ends of the adjusting hole (711) are respectively connected to the outlet end of the first heat exchange part (151) and the inlet end of the second heat exchange part (152), and as the shielding arc plate (5) is lifted, the connecting area between the adjusting hole (711) and the outlet end of the first heat exchange part (151), as well as the connecting area between the adjusting hole (711) and the inlet end of the second heat exchange part (152) gradually increases.

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