Marine ice impact prevention cooling system

Abstract

The invention relates to the technical field of ship cooling systems, and provides a marine ice impact prevention cooling system which comprises a main pipeline, a heat exchange circulation pipeline, a preheater, an ejector, a condenser and an evaporator, and the preheater is provided with a preheating cavity and a heat exchange cavity which are spaced; the ejector is provided with an ejection cavity as well as an ice water inlet and a water ejection inlet which are communicated with the ejection cavity; the condenser is provided with a condensation cavity and a water condensation cavity which are spaced; the main pipeline is sequentially connected with an ice water source, a preheating cavity, an ice water inlet, a condensation cavity and a water jetting inlet, the main pipeline is provided with a discharge port, and the discharge port is located between the ejector and the condenser; the heat exchange circulation pipeline is sequentially connected with an outlet of the heat exchange cavity, the evaporator, the water condensation cavity and an inlet of the heat exchange cavity. Three-stage heating of ice water is achieved through the preheater, the ejector and the condenser, the ice water is heated through heat generated by condensation of system steam, the ice impact risk of a cooling water pump is reduced and eliminated, energy consumption is reduced, and the problem that cooling water of the system is cut off due to the fact that ice blocks are gathered in front of an ice filtering device is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship cooling systems, in particular to a marine anti-icing cooling system. BACKGROUND

[0002] The cooling system provides the final cooling source for key equipment such as the main and auxiliary power machines of the ship, and is the key to maintaining the normal operation of the ship power. During the ship sailing in the ice area, the ice blocks mixed into the cooling water have high initial hardness, and the impeller rotates at high speed, so the ice blocks will directly hit the cooling water pump impeller. This process, which lasts for a long time, can easily cause structural damage to the cooling water pump under the action of ice impact load, leading to functional failure, and thus the power system cannot operate normally.

[0003] In related technologies, the traditional countermeasures include two types of "ice melting" and "ice filtering". The "ice melting" scheme is to set a steam jet or an electric heating element at the inlet of the cooling water pump to heat and melt the ice blocks. However, this scheme has the disadvantages of consuming steam or electricity, short heating time, insufficient cooling, and inability to eliminate the risk of ice in the pump inlet. The "ice filtering" is to set a filter screen, grating or other blocking structure at the water suction port to filter the ice blocks below a certain size. However, this scheme has the disadvantage that the ice blocks are easy to accumulate in front of the ice filtering device and block the cooling water from entering the cooling system, which can easily lead to a decrease in cooling load or even cause a flow interruption failure risk. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the related art. To this end, the present application provides a marine anti-icing cooling system, which aims to effectively reduce the ice in the inlet of the cooling water pump and improve the reliability and service life of the cooling water pump in the ice area.

[0005] The marine anti-icing cooling system according to the embodiments of the present application comprises a main pipeline, a heat exchange circulation pipeline, a preheater, an ejector, a condenser and an evaporator, wherein: The preheater is provided with a preheating cavity and a heat exchange cavity which are spaced apart; The ejector is provided with an injection cavity, an ice water inlet and a water injection inlet which are communicated with the injection cavity; The condenser is provided with a condensing cavity and a condensate cavity which are spaced apart; The main pipeline is connected in sequence with an ice water source, the preheating cavity, the ice water inlet, the condensing cavity and the water injection inlet, and is provided with a discharge port, the discharge port being located between the ejector and the condenser; The heat exchange circulation pipeline is connected in sequence with the outlet of the heat exchange cavity, the evaporator, the condensate cavity and the inlet of the heat exchange cavity.

[0006] According to an embodiment of the present invention, the marine anti-icing cooling system achieves three-stage heating of ice water by setting a preheater, an ejector, and a condenser before the cooling water pump. It utilizes the heat generated by the system's steam condensation to heat the ice mixed in the ice water, thereby reducing and mitigating the risk of ice attack on the cooling water pump, saving energy consumption, and solving the problem that traditional ice filtering technology easily leads to ice accumulation in front of the ice filtering device, causing the system's cooling water to stop flowing.

[0007] According to one embodiment of the present invention, the marine anti-icing cooling system further includes a cooling water pump, which is located in the main pipeline and downstream of the condensation chamber.

[0008] According to one embodiment of the present invention, the preheater includes: A preheating body, wherein the preheating body is provided with the preheating cavity; A heat exchange assembly is disposed on the preheating body and has the heat exchange chamber.

[0009] According to one embodiment of the present invention, the heat exchange assembly includes: A water inlet manifold is located at one end of the preheating body; The water inlet pipe section is located in the preheating body and is connected to the water inlet manifold; The water outlet manifold is located at the end of the preheating body away from the water inlet manifold. The water outlet pipe section is located in the preheating body and is connected to the water outlet manifold; Multiple heat exchange tubes are connected at one end to the inlet water header and at the other end to the outlet water header. The inlet water header, the multiple heat exchange tubes, and the outlet water header together form the heat exchange chamber.

[0010] According to one embodiment of the present invention, the heat exchange tube includes at least a first section and a second section connected to each other. The first section is connected to the inlet water header, and the second section is connected to the outlet water header. The first section extends obliquely toward the central axis of the preheating body in a direction away from the inlet water header, and the second section extends obliquely toward the central axis of the preheating body in a direction away from the outlet water header.

[0011] According to one embodiment of the present invention, the water inlet manifold is arranged in a ring shape along the inner wall of the preheating body, and the heat exchange assembly includes a plurality of water inlet pipe sections, which are arranged at circumferential intervals along the water inlet manifold.

[0012] According to one embodiment of the present invention, the inner wall of the ejector is provided with ice-breaking blades.

[0013] According to one embodiment of the present invention, the ejector is provided with a throat along its length, the diameter of the throat being smaller than the diameter of the ice water inlet, and the ice-breaking blade is disposed at the throat.

[0014] According to one embodiment of the present invention, the inner wall of the ejector is provided with a plurality of ice-breaking blades, which are arranged in a ring-shaped interval.

[0015] According to one embodiment of the present invention, the marine anti-icing cooling system further includes a feedwater pump, which is disposed in the heat exchange circulation pipeline and located between the preheater and the evaporator; And / or, the marine anti-icing cooling system further includes a turbine, which is disposed in the heat exchange circulation pipeline and located between the evaporator and the condenser.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the marine anti-icing cooling system provided in an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the preheater provided in an embodiment of the present invention.

[0020] Figure 3 yes Figure 2 Sectional view at point A in the middle.

[0021] Figure 4 This is a schematic diagram of the ejector provided in an embodiment of the present invention.

[0022] Figure 5 yes Figure 4 Sectional view at point B.

[0023] Figure 6 This refers to the changes in ice content (solid line) and relative hardness (dashed line) of ice water at different stages provided in the embodiments of the present invention.

[0024] Figure 7 This refers to the change in the equivalent diameter of ice blocks at different stages of ice water provided in the embodiments of the present invention.

[0025] Figure label: 1. Preheater; 11. Preheater body; 12. Heat exchange assembly; 121. Inlet water header; 122. Inlet water pipe section; 123. Outlet water header; 124. Outlet water pipe section; 125. Heat exchange tube; 1251. First section; 1252. Second section; 2. Ejector; 21. Throat; 211. Ice crushing blade; 22. Ice water inlet; 23. Water jet inlet; 3. Condenser; 4. Evaporator; 5. Cooling water pump; 6. Condensate pump; 7. Feed water pump; 8. Turbine; 100. Ice water source; 200. Discharge port. Detailed Implementation

[0026] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0029] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0031] like Figure 1 As shown, the marine anti-icing cooling system according to an embodiment of the present invention includes a main pipeline, a heat exchange circulation pipeline, a preheater 1, an ejector 2, a condenser 3, and an evaporator 4, wherein: the preheater 1 is provided with a preheating chamber and a heat exchange chamber spaced apart; the ejector 2 is provided with an ejection chamber and an ice water inlet 22 and a water jet inlet 23 connecting the ejection chamber; the condenser 3 is provided with a condensation chamber and a condensate chamber spaced apart; the main pipeline is sequentially connected to an ice water source 100, the preheating chamber, the ice water inlet 22, the condensation chamber, and the water jet inlet 23, and the main pipeline is provided with a discharge port 200, which is located between the ejector 2 and the condenser 3; the heat exchange circulation pipeline is sequentially connected to the outlet of the heat exchange chamber, the evaporator 4, the condensate chamber, and the inlet of the heat exchange chamber.

[0032] Understandably, the heat exchange circulation pipeline guides the condensate from condenser 3 into preheater 1 to perform "primary heating" on the chilled water and the ice mixed therein. Heat exchange occurs between the heat exchange chamber and the preheating chamber, thereby heating the chilled water in the preheating chamber and reducing the size and hardness of the ice. Meanwhile, ejector 2 uses the chilled water from the condenser 3's condenser outlet as the ejector fluid. Pressurized, it enters the ejector chamber through injection inlet 23 to eject the chilled water mixture entering from the chilled water inlet 22. During the direct mixing and contact of the two fluids, the condensation heat released by the steam absorbed by the chilled water discharged from the condenser outlet directly heats the chilled water and the ice mixed therein in the ejector chamber, thus performing "secondary heating." Finally, the heat exchange circulation pipeline uses the heat released by the exhaust steam of turbine 8 in the condensate chamber of condenser 3 to heat the ice water and the ice mixed with it ("three-stage heating"), further dissolving the residual ice fragments. The ice water after passing through condenser 3 finally enters cooling water pump 5, and the hardness of the residual ice is reduced to a minimum, or even to the point of being almost ice-free, thereby reducing or even eliminating the ice impact load on the impeller of cooling water pump 5 and improving its service life.

[0033] In the above scheme, the heat for heating the ice comes entirely from system heat dissipation or condensate regeneration, without causing unnecessary energy consumption. Furthermore, the specially designed preheater 1 and ejector 2 eliminate the "screen effect" caused by traditional filters and grids, preventing ice accumulation and blockage, thus improving the system's energy efficiency and reliability. This application utilizes multi-stage recovery of the power system's exhaust heat, combined with mechanical crushing, to heat and dissolve the ice mixed in the ice water, thereby eliminating ice at the inlet of the cooling water pump 5 and improving the reliability of operation in ice-affected areas.

[0034] According to an embodiment of the present invention, the marine anti-icing cooling system achieves three-stage heating of ice water by setting a preheater 1, an ejector 2, and a condenser 3 before the cooling water pump 5. It utilizes the heat generated by the system's steam condensation to heat the ice mixed in the ice water, thereby reducing and mitigating the risk of ice attack on the cooling water pump 5, saving energy consumption, and solving the problem that traditional ice filtering technology easily leads to ice accumulation in front of the ice filtering device, causing the system cooling water to stop flowing.

[0035] According to one embodiment of the present invention, the marine anti-icing cooling system further includes a cooling water pump 5, which is located in the main pipeline and downstream of the condenser chamber. It is understood that the residual ice hardness of the ice water after passing through the condenser 3 and finally entering the cooling water pump 5 is minimized, or even reduced to virtually ice-free, thereby reducing or even eliminating the ice-impact load on the impeller of the cooling water pump 5 and improving its service life.

[0036] like Figure 2 As shown, according to an embodiment of the present invention, the preheater 1 includes a preheating body 11 and a heat exchange assembly 12. The preheating body 11 is provided with a preheating cavity; the heat exchange assembly 12 is disposed on the preheating body 11 and is provided with a heat exchange cavity.

[0037] Understandably, the preheating body 11 has a tubular structure. Chilled water flows in from one end and out from the other. The heat exchange component 12 is located inside the preheating body 11. When the chilled water flows into the preheating body 11, it contacts the outer wall of the heat exchange component 12, thus exchanging heat with the hotter condensate in the heat exchange chamber. This achieves the heating of the chilled water. Since the condensate in the heat exchange chamber comes from the condensate generated during the operation of the condenser 3, its temperature is higher than that of the chilled water, allowing it to be heated.

[0038] According to one embodiment of the present invention, the heat exchange assembly 12 includes an inlet water header 121, an inlet water pipe section 122, an outlet water header 123, an outlet water pipe section 124, and multiple heat exchange pipes 125. The inlet water header 121 is located at one end of the preheating body 11; the inlet water pipe section 122 is located at the preheating body 11 and is connected to the inlet water header 121; the outlet water header 123 is located at the end of the preheating body 11 away from the inlet water header 121; the outlet water pipe section 124 is located at the preheating body 11 and is connected to the outlet water header 123; one end of the heat exchange pipe 125 is connected to the inlet water header 121, and the other end is connected to the outlet water header 123. The inlet water header 121, the multiple heat exchange pipes 125, and the outlet water header 123 together form a heat exchange chamber.

[0039] For example, the preheating body 11 is provided with a primary heating chilled water inlet and a primary heating chilled water outlet, and the heat exchange component 12 is provided with a heating water inlet (inlet pipe section 122) and a heating water outlet (outlet pipe section 124). The primary heating chilled water inlet and the heating water outlet are respectively used to connect the primary heating chilled water of the cooling system and the condensate outlet of the condensate chamber. The inlet pipe section 122 is connected to the inlet manifold 121, and the inlet manifold 121 and the outlet manifold 123 are connected to multiple sets of circumferentially arranged heat exchange pipes 125. That is, the condensate from the condensate chamber flows to the inlet pipe section 122 and enters the inlet manifold 121 and the heat exchange pipes 125. After heat exchange with the chilled water in the preheating body 11 by the heat exchange pipes 125, it is discharged from the outlet manifold 123 and the outlet pipe section 124. Understandably, the condensate first enters the inlet manifold 121 through the inlet pipe section 122. The inlet manifold 121 acts as a buffer chamber to slow down the condensate flow rate, allowing the condensate to flow through the heat exchange tube 125 at a slower speed, thereby increasing the heat exchange time, improving the heat exchange effect, and enabling better heating of the chilled water.

[0040] Please refer to the reference. Figure 2 and Figure 3 According to one embodiment of the present invention, the heat exchange tube 125 includes at least a first section 1251 and a second section 1252 connected to each other. The first section 1251 is connected to the inlet water header 121, and the second section 1252 is connected to the outlet water header 123. The first section 1251 is inclined toward the central axis of the preheating body 11 in a direction away from the inlet water header 121, and the second section 1252 is inclined toward the central axis of the preheating body 11 in a direction away from the outlet water header 123.

[0041] Specifically, the heat exchange tube 125 is an arc-shaped hollow heat exchange tube 125, with a first section 1251 and a second section 1252. The first section 1251 and the second section 1252, arranged circumferentially, form a throat in the center of the preheating body 11. Optionally, a condensate pump 6 is provided between the condensate chamber and the inlet pipe section 122. The condensate output by the condensate pump 6 enters the inlet pipe section 122 and the inlet header 121 as heating water, and then disperses into each heat exchange tube 125 to perform indirect heating of the ice water entering from the primary heating ice water inlet. During this process, ice blocks mixed in the ice water gather towards the center of the preheating body 11 under the action of the comb formed by the closely packed tapering tubes, making close contact with the heat exchange tube 125 for heat exchange, and gradually melting, thereby improving the heat exchange efficiency. At the same time, the special arc-shaped structure of the heat exchange tube 125 has good elasticity and can absorb the impact force generated by the impact of larger ice blocks. Smaller ice cubes mixed in the ice water can be directly discharged through the throat and the primary heated ice water outlet. Larger ice cubes, during the heat exchange process with the closed heat exchange tube 125, gradually decrease in equivalent diameter to a diameter smaller than the throat diameter, and then are discharged through the primary heated ice water outlet. After the above-mentioned "primary heating", the ice content and ice hardness of the ice water are reduced compared to the initial ice water, and the equivalent diameter is reduced to below d1.

[0042] According to one embodiment of the present invention, the water inlet manifold 121 is arranged in a ring shape along the inner wall of the preheating body 11, and the heat exchange assembly 12 includes a plurality of water inlet pipe sections 122, which are spaced apart circumferentially along the water inlet manifold 121. It can be understood that the ring-shaped water inlet manifold 121 facilitates the arrangement of a plurality of water inlet pipe sections 122 in the circumferential direction, thereby improving the water inlet efficiency.

[0043] Please refer to the reference. Figure 4 and Figure 5 According to one embodiment of the present invention, the inner wall of the ejector 2 is provided with ice-breaking blades 211. It can be understood that the ice-breaking blades 211 protrude from the inner wall of the ejector 2. When ice water passes through, the ice blocks collide with the ice-breaking blades 211 and are easily broken, thus melting more easily and reducing the ice content of the ice water.

[0044] According to one embodiment of the present invention, the ejector 2 is provided with a throat 21 along its length, the diameter of the throat 21 being smaller than the diameter of the ice water inlet 22, and the ice-crushing blade 211 is provided at the throat 21. It can be understood that the diameter at the throat 21 is the smallest so that small ice blocks can more easily come into contact with the ice-crushing blade 211, thereby improving the ice-crushing effect.

[0045] According to one embodiment of the present invention, the inner wall of the ejector 2 is provided with a plurality of ice-breaking blades 211, which are arranged in a ring-shaped interval. For example, the plurality of ice-breaking blades 211 are combined to form a ring-shaped structure to increase the coverage area and ensure that the ice blocks on the inner circumferential wall of the ejector 2 can collide with the ice-breaking blades 211, thus ensuring the ice-breaking effect.

[0046] Specifically, in ejector 2, chilled water pressurized and heated by condenser 3 from cooling water pump 5 serves as ejector water. This ejector water enters the annular ejector channel through the ejector inlet, driving the chilled water at the chilled water inlet 22 to sequentially enter the suction pipe at the front end of ejector 2 and the throat 21 in the middle section. After further pressurization through the expansion pipe at the rear end of ejector 2, it is discharged from the secondary heated chilled water outlet. During this process, the two fluids entering from the chilled water inlet 22 and the jet inlet 23 are thoroughly mixed, achieving "secondary heating" of the chilled water. An ice-crushing blade 211 is circumferentially arranged inside the throat 21. The ice in the chilled water undergoes further hardening after "primary heating" and "secondary heating," and is then broken by the mechanical cutting action of the ice-crushing blade 211, reducing its equivalent diameter to d2, which is below the circular diameter of the tip of the ice-crushing blade 211.

[0047] Comparison Figure 6 Figure 7 It can be seen that after two stages of heating and two diameter-limiting passes, the ice content of the ice water and the hardness and equivalent diameter of the cooled ice blocks continuously decrease. During the flow process before the ice water enters the condenser 3, the ice blocks melt to a value equal to or even smaller than dt (the diameter of the heat exchange tube 125), so that they will not block the condenser 3. Thus, they can smoothly enter the condenser 3 and be further heated (three-stage heating). The ice content of the ice water drops to close to 0. At this time, the ice water entering the cooling water pump 5 will not pose a threat of ice impact.

[0048] According to one embodiment of the present invention, the marine anti-icing cooling system further includes a water supply pump 7, which is disposed in the heat exchange circulation pipeline and located between the preheater 1 and the evaporator 4; it is understood that the water supply pump 7 improves the circulation water delivery efficiency and ensures its circulation flow.

[0049] In one embodiment, the marine anti-icing cooling system further includes a turbine 8, which is located in the heat exchange circulation pipeline and between the evaporator 4 and the condenser 3. It is understood that the turbine 8 is a rotary power machine that converts the energy of a fluid (such as steam, gas, water, or wind) into mechanical energy. Its core principle is to utilize the impact of fluid on the blades of an impeller (rotor) to drive the shaft to rotate and output kinetic energy.

[0050] The process of the marine anti-icing cooling system of this invention is as follows: (a) The ice-water mixture enters the preheater 1 from the "cooling water source" and undergoes heat exchange with the condensate pump 6, which draws condensate at a higher temperature (about 50-70°C) from the condenser 3, to perform "first-stage heating" of the ice-water and its ice blocks.

[0051] (ii) The chilled water after "first-stage heating" enters the ejector 2 through the ejector water. The ejector water is chilled water that has been heated by the condenser 3 and is boosted by the cooling water pump 5. Compared with the chilled water after "first-stage heating" by the preheater 1, it has a higher temperature because it absorbs the heat released by the steam in the condenser 3. Therefore, it can perform "second-stage heating" on the chilled water in the ejector 2.

[0052] (III) After the "first-stage heating," the chilled water, driven by the preheater 1 and drawn by the cooling water pump 5, partially enters the condenser 3, while the remaining portion is discharged through the outlet 200, ultimately injecting the heat from steam condensation into the external environment. The chilled water entering the condenser 3 receives heat released from steam condensation, completing the "third-stage heating." The ice is completely melted, and entering the cooling water pump 5 will no longer generate ice impact loads or cause impeller structure damage. After being pressurized by the cooling water pump 5, the chilled water enters the ejector 2 as ejector water to drive the above cycle continuously.

[0053] In addition, the condensate cooled by the preheater 1 is further pressurized by the feed water pump 7 and enters the evaporator 4 to absorb heat and generate steam. The exhaust steam generated after driving the turbine 8 enters the condenser 3 again, providing continuous heat for the above three-stage heating process.

[0054] Finally, it should be noted that the above embodiments are only for illustrating the present invention and not for limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A marine anti-icing cooling system, characterized in that, This includes the main pipeline, heat exchange circulation pipeline, preheater, ejector, condenser, and evaporator, among which: The preheater is provided with a preheating chamber and a heat exchange chamber spaced apart by phases; The ejector is provided with an ejection cavity and an ice water inlet and a water jet inlet that connect the ejection cavity; The condenser is provided with a condensation chamber and a condensate chamber spaced apart from each other; The main pipeline is sequentially connected to the chilled water source, the preheating chamber, the chilled water inlet, the condensing chamber, and the water jet inlet. The main pipeline is provided with a discharge port, which is located between the ejector and the condenser. The heat exchange circulation pipeline is connected in sequence to the outlet of the heat exchange chamber, the evaporator, the condensate chamber, and the inlet of the heat exchange chamber.

2. The marine anti-icing cooling system according to claim 1, characterized in that, The marine anti-icing cooling system also includes a cooling water pump, which is located in the main pipeline and downstream of the condensation chamber.

3. The marine anti-icing cooling system according to claim 1, characterized in that, The preheater includes: A preheating body, wherein the preheating body is provided with the preheating cavity; A heat exchange assembly is disposed on the preheating body, and the heat exchange assembly is provided with the heat exchange chamber.

4. The marine anti-icing cooling system according to claim 3, characterized in that, The heat exchange assembly includes: A water inlet manifold is located at one end of the preheating body; The water inlet pipe section is located in the preheating body and is connected to the water inlet manifold; The water outlet manifold is located at the end of the preheating body away from the water inlet manifold. The water outlet pipe section is located in the preheating body and is connected to the water outlet manifold; Multiple heat exchange tubes are connected at one end to the inlet water header and at the other end to the outlet water header. The inlet water header, the multiple heat exchange tubes, and the outlet water header together form the heat exchange chamber.

5. The marine anti-icing cooling system according to claim 4, characterized in that, The heat exchange tube includes at least a first section and a second section connected to each other. The first section is connected to the inlet water header, and the second section is connected to the outlet water header. The first section extends obliquely toward the central axis of the preheating body in a direction away from the inlet water header, and the second section extends obliquely toward the central axis of the preheating body in a direction away from the outlet water header.

6. The marine anti-icing cooling system according to claim 4, characterized in that, The water inlet manifold is arranged in a ring shape along the inner wall of the preheating body, and the heat exchange assembly includes a plurality of water inlet pipe sections, which are arranged at circumferential intervals along the water inlet manifold.

7. The marine anti-icing cooling system according to any one of claims 1 to 6, characterized in that, The inner wall of the ejector is equipped with ice-breaking blades.

8. The marine anti-icing cooling system according to claim 7, characterized in that, The ejector has a throat along its length, the diameter of which is smaller than the diameter of the ice water inlet, and the ice-breaking blade is located at the throat.

9. The marine anti-icing cooling system according to claim 7, characterized in that, The inner wall of the ejector is provided with multiple ice-breaking blades, which are arranged in a ring-shaped interval.

10. The marine anti-icing cooling system according to any one of claims 1 to 6, characterized in that, The marine anti-icing cooling system also includes a water supply pump, which is installed in the heat exchange circulation pipeline and located between the preheater and the evaporator; And / or, the marine anti-icing cooling system further includes a turbine, which is disposed in the heat exchange circulation pipeline and located between the evaporator and the condenser.

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