Shaft generator for a ship

Abstract

The utility model relates to the technical field of generator, and disclose a kind of shaft generator for ship, including: shell, the inside of the shell is provided with stator.The utility model is through the heat dissipation structure of wind cooling and water cooling combination, solve the problem of single low heat dissipation efficiency, not comprehensive of traditional shaft generator: wind cooling level, shaft drives fan blade to produce airflow, after filtering by dustproof plate, heat absorption plate heat is carried away by fin, it can also penetrate through groove and blow stator, rotor directly, and targeted heat dissipation core component;Water cooling level, cooling liquid flows through multiple copper pipe and transfer warehouse, reflux warehouse, both by first heat absorption copper pipe absorbs shell heat, and by second heat absorption copper pipe absorbs internal heat of shaft, heat dissipation copper pipe and heat absorption plate cooperate to strengthen cooling.Two synergies, wind cooling auxiliary cooling, water cooling absorbs internal heat, realize efficient heat dissipation, avoid high temperature to cause winding insulation to drop, permanent magnet demagnetization and other problems, guarantee generator stable operation.

Description

Technical Field

[0001] This utility model relates to the field of generator technology, and more specifically, to a shaft-driven generator for ships. Background Technology

[0002] In marine propulsion systems, shaft-driven generators, as key equipment that utilizes the surplus power of the ship's main engine for power generation, effectively reduce the operating load of auxiliary machinery and improve energy efficiency. Therefore, they are widely used in various merchant ships and special-purpose vessels. During operation, the stator, rotor, and other core components of a shaft-driven generator continuously generate heat due to electromagnetic induction and mechanical friction. If this heat cannot be dissipated in time, the internal temperature of the generator will continue to rise. When the internal temperature exceeds its safe operating threshold, it will not only cause a decline in the insulation performance of the stator windings, shortening the service life of the insulation materials and increasing the risk of short circuits and breakdowns, but may also lead to demagnetization of the rotor permanent magnets and bearing lubrication failure. This seriously affects the operational stability and reliability of the shaft-driven generator, and may even cause power outages in the ship's electrical system, threatening the ship's normal navigation and operational safety. Therefore, an efficient heat dissipation solution is a key technical requirement for ensuring the long-term stable operation of shaft-driven generators.

[0003] Currently, the cooling methods used in marine shaft-driven generators are mostly single air cooling or water cooling. Single air cooling typically involves installing fan blades on the generator shaft, using the rotation of the blades to drive airflow and dissipate heat from the internal components. However, this method is limited by the efficiency of air cooling; when the generator has high power and generates a large amount of heat, airflow alone cannot quickly remove the large amount of heat, resulting in limited cooling effectiveness and failing to meet the cooling requirements of high-power generators. Single water cooling involves installing cooling water pipes on or inside the generator casing, using the flow of coolant within the pipes to absorb heat and then carry it away from the generator. Although water cooling offers improved cooling efficiency compared to air cooling, traditional water cooling designs often only target the generator casing for heat dissipation, lacking effective cooling measures for areas prone to heat accumulation, such as the shaft. These areas still pose a risk of overheating, resulting in an overall less than ideal cooling effect, thus requiring improvement. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a shaft-driven generator for ships, which has the advantage of efficient heat dissipation for the generator.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shaft-driven generator for ships, comprising: A housing, wherein a stator is disposed inside the housing; A heat dissipation mechanism is disposed inside the housing; The heat dissipation mechanism includes a first heat-absorbing copper tube, the outer surface of which is fixedly sleeved with the interior of the outer shell. A heat-dissipating copper tube is fixedly installed at one end of the first heat-absorbing copper tube. An infusion copper tube is fixedly installed at the end of the heat-dissipating copper tube away from the first heat-absorbing copper tube. A transfer chamber is fixedly sleeved at the end of the infusion copper tube away from the heat-dissipating copper tube. A rotating shaft is movably sleeved inside the transfer chamber. The outer surface of the rotating shaft is movably sleeved with the interior of the outer shell. A fan blade and a rotor are fixedly sleeved on the outer surface of the rotating shaft. A second heat-absorbing copper tube is fixedly sleeved inside the rotating shaft. The interior of the second heat-absorbing copper tube is connected to the interior of the transfer chamber. A return chamber is fixedly sleeved at the rear end of the second heat-absorbing copper tube. The front of the return chamber is fixedly connected to the rear end of the rotating shaft. The outer surface of the return chamber is movably sleeved with the interior of the back side of the outer shell.

[0006] As a preferred embodiment of this utility model, a water tank is fixedly installed at the bottom of the outer shell, an infusion tube is fixedly sleeved inside the front of the water tank, the inside of the infusion tube is fixedly sleeved with the bottom of the first heat-absorbing copper tube, and a liquid pump is provided at the bottom of the infusion tube, the liquid pump being located inside the water tank.

[0007] As a preferred embodiment of this utility model, a return pipe is movably sleeved inside the back of the return chamber, and the end of the return pipe away from the return chamber is fixedly sleeved inside the back of the water tank.

[0008] As a preferred embodiment of this utility model, a fixing block is fixedly installed on the outer surface of the outer shell, and the interior of the fixing block is fixedly sleeved with the outer surface of the return pipe.

[0009] As a preferred embodiment of this utility model, the interior of the outer shell is provided with an opening, and the back of the outer shell is provided with a heat dissipation vent.

[0010] As a preferred embodiment of this utility model, a dustproof plate is fixedly sleeved inside the front of the outer shell, and the inside of the dustproof plate is movably sleeved with the outer surface of the rotating shaft.

[0011] As a preferred embodiment of this utility model, a heat-absorbing plate is fixedly sleeved inside the outer shell, and the inside of the heat-absorbing plate is fixedly sleeved with the outer surface of the heat dissipation copper pipe and the infusion copper pipe. A through groove is opened on the heat-absorbing plate, and the inside of the heat-absorbing plate is movably sleeved with the outer surface of the rotating shaft. The inside of the front of the heat-absorbing plate is fixedly sleeved with the outer surface of the transfer chamber.

[0012] As a preferred embodiment of this utility model, fins are fixedly installed on the front side of the heat absorption plate, and the fins are located behind the fan blades.

[0013] As a preferred embodiment of this utility model, a bracket is fixedly installed on the outer surface of the outer shell, and a circular hole is provided on the bracket.

[0014] In a preferred embodiment of this invention, the heat-absorbing plate is made of aluminum alloy and the fins are made of copper alloy.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model solves the problems of low efficiency and incomplete heat dissipation in traditional shaft-driven generators by combining air cooling and water cooling in its heat dissipation structure: In terms of air cooling, the shaft drives the fan blades to generate airflow, which, after being filtered by the dust filter, carries away heat from the heat-absorbing plate via the fins. It can also directly blow heat through the slots to the stator and rotor, specifically targeting the core components for heat dissipation. In terms of water cooling, the coolant flows through multiple copper pipes and a transfer and return chamber, absorbing heat from both the outer casing and the internal shaft via the first and second heat-absorbing copper pipes. The heat dissipation copper pipes and heat-absorbing plates work together to enhance cooling. The two systems work synergistically, with air cooling assisting in cooling and water cooling absorbing internal heat, achieving efficient heat dissipation and preventing problems such as reduced winding insulation and demagnetization of permanent magnets caused by high temperatures, thus ensuring stable generator operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the structure of the first heat-absorbing copper tube of this utility model; Figure 5 This is a schematic diagram of the structure of the heat dissipation copper pipe of this utility model; Figure 6 This is a schematic diagram of the through groove of this utility model; Figure 7 This is a cross-sectional view of the reflux chamber of this utility model.

[0017] In the diagram: 1. Outer shell; 2. Stator; 3. Shaft; 4. Fan blade; 5. Rotor; 6. First heat-absorbing copper tube; 7. Heat-dissipating copper tube; 8. Infusion copper tube; 9. Transfer chamber; 10. Second heat-absorbing copper tube; 11. Return chamber; 12. Water tank; 13. Infusion pipe; 14. Liquid pump; 15. Return pipe; 16. Through port; 17. Heat dissipation port; 18. Dustproof plate; 19. Fixing block; 20. Heat-absorbing plate; 21. Through groove; 22. Fin; 23. Support; 24. Round hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1 to 7 As shown, this utility model provides a shaft-driven generator for ships, comprising: The outer casing 1 has a stator 2 installed inside it. The heat dissipation mechanism is located inside the outer casing 1; The heat dissipation mechanism includes a first heat-absorbing copper tube 6, the outer surface of which is fixedly sleeved with the interior of the outer shell 1. A heat dissipation copper tube 7 is fixedly installed at one end of the first heat-absorbing copper tube 6. An infusion copper tube 8 is fixedly installed at the end of the heat dissipation copper tube 7 away from the first heat-absorbing copper tube 6. A transfer chamber 9 is fixedly sleeved at the end of the infusion copper tube 8 away from the heat dissipation copper tube 7. A rotating shaft 3 is movably sleeved inside the transfer chamber 9. The outer surface of the rotating shaft 3 is movably sleeved with the interior of the outer shell 1. A fan blade 4 and a rotor 5 are fixedly sleeved on the outer surface of the rotating shaft 3. A second heat-absorbing copper tube 10 is fixedly sleeved inside the rotating shaft 3. The interior of the second heat-absorbing copper tube 10 is connected to the interior of the transfer chamber 9. A return chamber 11 is fixedly sleeved at the rear end of the second heat-absorbing copper tube 10. The front of the return chamber 11 is fixedly connected to the rear end of the rotating shaft 3. The outer surface of the return chamber 11 is movably sleeved with the interior of the back of the outer shell 1.

[0020] The outer casing 1 serves as the external protection and mounting base for the entire generator. Internally, it provides mounting space for core components such as the stator 2 and rotor 5, while also providing fixed support for the various components of the heat dissipation mechanism. The stator 2 and the rotor 5, which are fixedly sleeved on the outer surface of the shaft 3, cooperate to generate electricity when the shaft 3 is driven to rotate by the ship's main engine. The shaft 3 is not only the core transmission component that drives the rotor 5 to rotate and generate electricity, but it also drives the fan blades 4 to rotate, generating airflow and providing power for air cooling. Simultaneously, its interior provides an installation channel for the second heat-absorbing copper pipe 10, allowing water cooling to cover the area of ​​the shaft 3. The fan blades 4, through rotation, draw outside air into the outer casing 1. On one hand, this works with the fins 22 to cool the heat-absorbing plate 20; on the other hand, the airflow passes through the slot 21 directly to the stator 2 and rotor 5, directly carrying away their heat and completing air cooling. The coolant transported by the first heat-absorbing copper pipe 6 in the heat dissipation mechanism absorbs external airflow. The heat conducted by the shell 1 is transferred to the heat dissipation copper pipe 7, which receives the coolant in the first heat-absorbing copper pipe 6. The heat is then transferred to the heat-absorbing plate 20 through the connection with the heat-absorbing plate 20. The coolant is then cooled by the airflow generated by the fins 22 and the fan blades 4. The liquid delivery copper pipe 8 then delivers the cooled coolant to the transfer chamber 9. The transfer chamber 9 serves as a transition component for the coolant, connecting the liquid delivery copper pipe 8 with the second heat-absorbing copper pipe 10, allowing the coolant to smoothly enter the second heat-absorbing copper pipe 10. The second heat-absorbing copper pipe 10 is installed inside the rotating shaft 3 and can directly absorb the heat generated by the operation of the rotating shaft 3. The coolant after absorbing the heat is then delivered to the return chamber 11. The return chamber 11 is fixedly connected to the rear end of the rotating shaft 3 and rotates synchronously with the rotating shaft 3. On the other hand, it receives the coolant delivered by the second heat-absorbing copper pipe 10, providing a transition space for the subsequent flow of the coolant. At the same time, its outer surface is movably sleeved with the back of the shell 1 to ensure the stability of the rotating shaft 3 during rotation.

[0021] The bottom of the outer shell 1 is fixedly installed with a water tank 12. The inside of the front of the water tank 12 is fixedly sleeved with an infusion pipe 13. The inside of the infusion pipe 13 is fixedly sleeved with the bottom of the first heat-absorbing copper pipe 6. A liquid pump 14 is provided at the bottom of the infusion pipe 13. The liquid pump 14 is located inside the water tank 12.

[0022] The water tank 12 serves as a storage container for coolant, providing a source of coolant for the entire water-cooled heat dissipation cycle, and also providing an installation location for the liquid pump 14. The liquid delivery pipe 13 connects the water tank 12 and the first heat-absorbing copper pipe 6, forming a channel for coolant to flow from the water tank 12 to the first heat-absorbing copper pipe 6, ensuring that the coolant can smoothly enter the heat dissipation mechanism. The liquid pump 14 serves as the power source for the water-cooled cycle, pressurizing and delivering the coolant in the water tank 12 to the liquid delivery pipe 13 through its own operation, thereby driving the coolant to flow in the entire water-cooled pipeline to achieve continuous heat dissipation.

[0023] The back of the return chamber 11 is movably connected to the return pipe 15, and the end of the return pipe 15 away from the return chamber 11 is fixedly connected to the back of the water tank 12.

[0024] The return pipe 15 connects the return chamber 11 and the water tank 12, forming a channel for coolant to flow back from the return chamber 11 to the water tank 12. This allows the coolant, after absorbing heat, to return to the water tank 12, completing the water cooling cycle and ensuring that the coolant can be reused, continuously providing a guarantee for heat dissipation.

[0025] Among them, a fixing block 19 is fixedly installed on the outer surface of the outer shell 1, and the interior of the fixing block 19 is fixedly sleeved with the outer surface of the return pipe 15.

[0026] The fixing block 19 is fixedly connected to the outer surface of the outer shell 1, and its interior is fixedly sleeved with the outer surface of the return pipe 15, which can support and fix the return pipe 15 and ensure the stability of the coolant delivery in the return pipe 15.

[0027] The outer casing 1 has an opening 16 inside and a heat dissipation opening 17 on the back.

[0028] The inlet 16 is located inside the housing 1, providing a flow channel for the airflow drawn in by the fan blades 4, so that the airflow that has completed heat dissipation after passing through the stator 2 and rotor 5 areas can flow smoothly to the heat dissipation port 17; the heat dissipation port 17 is located on the back of the housing 1, serving as an outlet for the airflow to exit the housing 1, so that the hot airflow that has completed heat dissipation can be discharged in time, ensuring smooth air-cooling circulation and continuously removing heat from the generator.

[0029] The dustproof plate 18 is fixedly sleeved inside the front of the outer shell 1, and the inside of the dustproof plate 18 is movably sleeved with the outer surface of the rotating shaft 3.

[0030] The dustproof plate 18 is fixedly sleeved inside the front of the outer casing 1, and its interior is movably sleeved with the outer surface of the rotating shaft 3. While not affecting the rotation of the rotating shaft 3, it can filter the air drawn into the outer casing 1 by the fan blade 4, blocking impurities in the air from entering the generator and preventing impurities from adhering to the surface of components such as the stator 2 and rotor 5, which would affect the generator's operating efficiency or cause damage to the components.

[0031] The heat-absorbing plate 20 is fixedly sleeved inside the outer shell 1. The inside of the heat-absorbing plate 20 is fixedly sleeved with the outer surface of the heat dissipation copper pipe 7 and the liquid infusion copper pipe 8. A through groove 21 is opened on the heat-absorbing plate 20. The inside of the heat-absorbing plate 20 is movably sleeved with the outer surface of the rotating shaft 3. The inside of the front of the heat-absorbing plate 20 is fixedly sleeved with the outer surface of the transfer chamber 9.

[0032] The heat absorber plate 20 is fixedly sleeved inside the outer shell 1. Its interior is fixedly sleeved with the outer surface of the heat dissipation copper pipe 7 and the liquid delivery copper pipe 8. It can absorb the heat generated by the generator operation and the heat of the coolant in the heat dissipation copper pipe 7, and at the same time provide fixed support for the heat dissipation copper pipe 7 and the liquid delivery copper pipe 8. The through groove 21 is opened on the heat absorber plate 20 to provide a flow channel for the airflow generated by the fan blade 4, so that the airflow can pass through the heat absorber plate 20 to reach the stator 2 and rotor 5 areas, and realize direct heat dissipation for both. The front interior of the heat absorber plate 20 is fixedly sleeved with the outer surface of the transfer chamber 9, which can fix the transfer chamber 9 and ensure the stability of the transfer chamber 9 when the shaft 3 rotates.

[0033] Fins 22 are fixedly installed on the front of the heat absorber plate 20, and the fins 22 are located behind the fan blades 4.

[0034] The fins 22 are fixedly connected to the front of the heat absorber plate 20 and are located behind the fan blades 4. By increasing the heat dissipation area, the heat conducted by the heat absorber plate 20 is quickly transferred to the airflow generated by the fan blades 4, which accelerates the cooling speed of the heat absorber plate 20. At the same time, it can also play an auxiliary role in cooling the coolant in the heat dissipation copper pipe 7 and improve the heat dissipation efficiency.

[0035] The outer surface of the outer shell 1 is fixedly mounted with a bracket 23, and the bracket 23 has a round hole 24.

[0036] The bracket 23 is fixedly connected to the outer surface of the housing 1, serving as a connecting component between the generator and the ship's installation location, and providing support for the generator; the round hole 24 is opened on the bracket 23, making it convenient for workers to use bolts to pass through the round hole 24 to fix the generator in the designated position on the ship, ensuring the stability of the generator during the ship's navigation.

[0037] The heat absorber plate 20 is made of aluminum alloy, and the fins 22 are made of copper alloy.

[0038] The aluminum alloy heat absorber plate 20 has excellent thermal conductivity and lightweight characteristics. When it comes into direct contact with the heat dissipation copper pipe 7 and the liquid infusion copper pipe 8, it can quickly absorb the heat transferred in the pipeline. At the same time, the aluminum alloy surface is easy to form an oxide protective film, which can adapt to the high humidity and salt spray environment during ship operation and avoid the impact of corrosion on heat absorption efficiency. The copper alloy fins 22 have a higher thermal conductivity than aluminum alloy, which can quickly receive the heat transferred by the heat absorber plate 20. Through its densely distributed structure, it increases the contact area with the air. Combined with the airflow generated by the fan blades 4, it accelerates the heat diffusion. The combination of the two materials makes heat absorption, heat conduction and heat dissipation form a highly efficient synergy, which significantly improves the heat dissipation stability of the shaft generator during long-term operation of the ship.

[0039] Working principle and usage process of this utility model: After the shaft generator for ships is installed in the designated position on the ship through the round hole 24 on the bracket 23 and the bolts, when the generator runs and drives the shaft 3 to rotate, the shaft 3 will synchronously drive the fan blade 4 and rotor 5 fixedly sleeved on its outer surface to rotate. The rotor 5 interacts with the stator 2 set inside the outer casing 1 to generate electricity. At the same time, due to the rotation of the fan blade 4, the air outside the generator will be drawn into the outer casing 1. During the air entry process, the impurities in the air will be filtered by the dustproof plate 18 fixedly sleeved inside the front of the outer casing 1 to prevent impurities from entering and affecting the operation of the internal components of the generator. When the generator generates heat during operation, the heat-absorbing plate 20 fixedly fitted inside the outer casing 1 first absorbs this heat and guides it to the fins 22 fixedly installed on its front side. At this time, the airflow generated by the rotation of the fan blade 4 blows towards the fins 22 located behind it. The fins 22, by increasing the heat dissipation area, can quickly transfer the heat conducted by the heat-absorbing plate 20 to the airflow, achieving efficient cooling of the heat-absorbing plate 20. At the same time, the airflow passing through the fins 22 enters the area where the stator 2 and rotor 5 are located inside the outer casing 1 through the through slot 21 opened on the heat-absorbing plate 20, directly blowing on the stator 2 and rotor 5, and further removing the heat generated by their operation through air cooling. After that, the airflow that has completed heat dissipation will be discharged from the inner casing 1 through the through-hole 16 opened inside the outer casing 1 and the heat dissipation vent 17 opened on the back of the outer casing 1, forming an air cooling heat dissipation cycle. When the generator continues to run, causing the internal temperature to rise further, the operator starts the liquid pump 14 installed inside the water tank 12. At this time, the coolant in the water tank 12 will flow into the liquid delivery pipe 13 fixedly connected inside the front of the water tank 12 under the action of the liquid pump 14, and then enter the first heat-absorbing copper pipe 6 fixedly connected inside the outer shell 1 through the liquid delivery pipe 13. When the coolant flows in the first heat-absorbing copper pipe 6, it will absorb the heat conducted by the outer shell 1. Then, the coolant after absorbing heat will flow into the heat dissipation copper pipe 7 fixedly installed at one end of the first heat-absorbing copper pipe 6. The outer surface of the heat dissipation copper pipe 7 is fixedly connected to the heat absorption plate 20. At this time, the heat absorption plate 20 will absorb the heat of the coolant in the heat dissipation copper pipe 7 again and conduct it to the fins 22. With the airflow generated by the fan blades 4, the coolant will be cooled down quickly. Then, the cooled coolant will flow from the heat dissipation copper pipe 7 into the liquid delivery copper pipe 8 fixedly installed at the other end, and then enter the transfer chamber 9 through the liquid delivery copper pipe 8. Inside, the transfer chamber 9 is connected to the second heat-absorbing copper pipe 10, which is fixedly sleeved inside the shaft 3. Coolant enters the second heat-absorbing copper pipe 10 through the transfer chamber 9 and absorbs the heat generated by the operation of the shaft 3 when flowing in the second heat-absorbing copper pipe 10. After absorbing the heat, the coolant flows from the rear end of the second heat-absorbing copper pipe 10 into the return chamber 11, which is fixedly sleeved with it. One end of the return pipe 15, which is movably sleeved inside the back of the return chamber 11, is fixedly sleeved inside the back of the water tank 12. The outer surface of the return pipe 15 is supported and fixed by the fixing block 19 fixedly installed on the outer surface of the outer shell 1, which can prevent the return pipe 15 from shifting due to the turbulence of the ship. Therefore, the coolant flows from the return chamber 11 into the return pipe 15 and returns to the water tank 12 through the return pipe 15, forming a water-cooled heat dissipation cycle. By combining air cooling and water cooling, efficient and comprehensive heat dissipation of the generator is achieved, ensuring the long-term stable operation of the generator.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shaft-driven generator for ships, characterized in that, Including: The outer casing (1) has a stator (2) disposed inside the outer casing (1); A heat dissipation mechanism is disposed inside the outer casing (1); The heat dissipation mechanism includes a first heat-absorbing copper tube (6), the outer surface of which is fixedly sleeved with the interior of the outer shell (1). A heat dissipation copper tube (7) is fixedly installed at one end of the first heat-absorbing copper tube (6). An infusion copper tube (8) is fixedly installed at the end of the heat dissipation copper tube (7) away from the first heat-absorbing copper tube (6). A transfer chamber (9) is fixedly sleeved at the end of the infusion copper tube (8) away from the heat dissipation copper tube (7). A rotating shaft (3) is movably sleeved inside the transfer chamber (9). The outer surface of the rotating shaft (3) The rotating shaft (3) is fixedly fitted with a fan blade (4) and a rotor (5) on its outer surface. The rotating shaft (3) is fixedly fitted with a second heat-absorbing copper tube (10) inside. The interior of the second heat-absorbing copper tube (10) is connected to the interior of the transfer chamber (9). The rear end of the second heat-absorbing copper tube (10) is fixedly fitted with a return chamber (11). The front of the return chamber (11) is fixedly connected to the rear end of the rotating shaft (3). The outer surface of the return chamber (11) is movably fitted with the interior of the back side of the outer shell (1).

2. A shaft-driven generator for ships according to claim 1, characterized in that: A water tank (12) is fixedly installed at the bottom of the outer shell (1). An infusion tube (13) is fixedly sleeved inside the front of the water tank (12). The inside of the infusion tube (13) is fixedly sleeved with the bottom of the first heat-absorbing copper tube (6). A liquid pump (14) is provided at the bottom of the infusion tube (13). The liquid pump (14) is located inside the water tank (12).

3. A shaft-driven generator for ships according to claim 1, characterized in that: The back of the reflux chamber (11) is movably connected to the reflux pipe (15), and the end of the reflux pipe (15) away from the reflux chamber (11) is fixedly connected to the back of the water tank (12).

4. A shaft-driven generator for ships according to claim 1, characterized in that: A fixing block (19) is fixedly installed on the outer surface of the outer shell (1), and the interior of the fixing block (19) is fixedly sleeved with the outer surface of the return pipe (15).

5. A shaft-driven generator for ships according to claim 1, characterized in that: The outer casing (1) has an opening (16) inside and a heat dissipation opening (17) on the back.

6. A shaft-driven generator for ships according to claim 1, characterized in that: A dustproof plate (18) is fixedly sleeved inside the front of the outer shell (1), and the inside of the dustproof plate (18) is movably sleeved with the outer surface of the rotating shaft (3).

7. A shaft-driven generator for ships according to claim 1, characterized in that: A heat-absorbing plate (20) is fixedly sleeved inside the outer shell (1). The inside of the heat-absorbing plate (20) is fixedly sleeved with the outer surface of the heat dissipation copper pipe (7) and the infusion copper pipe (8). A through groove (21) is opened on the heat-absorbing plate (20). The inside of the heat-absorbing plate (20) is movably sleeved with the outer surface of the rotating shaft (3). The inside of the front of the heat-absorbing plate (20) is fixedly sleeved with the outer surface of the transfer chamber (9).

8. A shaft-driven generator for ships according to claim 7, characterized in that: Fins (22) are fixedly installed on the front of the heat absorber plate (20), and the fins (22) are located behind the fan blades (4).

9. A shaft-driven generator for ships according to claim 1, characterized in that: A bracket (23) is fixedly installed on the outer surface of the outer shell (1), and a round hole (24) is provided on the bracket (23).

10. A shaft-driven generator for a ship according to claim 8, characterized in that: The heat absorber plate (20) is made of aluminum alloy, and the fins (22) are made of copper alloy.

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