Marine generator using external water to filter and exhaust
The cooling system, which combines internal and external circulation channels, solves the problem of incomplete combustion and high emissions from ship generator sets, achieving effective exhaust gas treatment and improved cooling efficiency, while simplifying the structure of ship generators.
Patent Information
- Application Number
- CN202520634929.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-04-07
AI Technical Summary
In existing ship power generation systems, diesel generator sets suffer from incomplete combustion, resulting in high levels of pollutants in emissions, and the exhaust gases are difficult to treat effectively, affecting the health of the crew.
An internal circulation channel is used to cool the generator set, and external water flow is introduced through an external circulation channel for cooling. Exhaust gas is mixed with cooling water through the exhaust pipe and discharged together, simplifying the structure.
It effectively improves exhaust gas emission, prevents exhaust gas from spreading inside the ship, enhances cooling efficiency, simplifies the structure, and protects the health of the crew.
Smart Images
Figure CN223739499U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power generation technology, and in particular to a marine generator that uses external water to filter exhaust gas. Background Technology
[0002] Currently, the electricity used by existing ships is provided by onboard power generation units, and most of these systems use diesel generator sets. However, existing onboard power generation systems use diesel fuel, which results in incomplete combustion and high levels of pollutants such as benzene, particulate matter, and nitrogen oxides in the emissions. In addition, the limited space on board ships makes it difficult to effectively treat and discharge exhaust gases, often causing exhaust fumes to permeate the crew's living space and seriously affecting their health. Utility Model Content
[0003] The purpose of this invention is to at least partially improve the problems existing in the prior art. To this end, this invention provides a marine generator that uses external water filtration to exhaust gas, so as to improve the exhaust gas emission effect of marine generators to a certain extent.
[0004] To achieve the above objectives, this utility model provides a marine generator that utilizes external water filtration for exhaust, comprising a generator set, a cooling system, and an exhaust pipe; the cooling system includes an internal circulation channel, a heat exchanger, and an external circulation channel; the internal circulation channel passes through the generator set and the heat exchanger, the external circulation channel includes an inlet pipe, an inlet pump, and an outlet pipe, one end of the inlet pipe is adapted to connect to a water source outside the ship, the other end of the inlet pipe connects to the heat exchanger after passing through the inlet pump, one end of the outlet pipe connects to the heat exchanger, and the other end of the outlet pipe is adapted to connect to a water source outside the ship; one end of the exhaust pipe is connected to the generator set, and the other end of the exhaust pipe is connected to the outlet pipe.
[0005] Preferably, the exhaust pipe is connected to the water outlet pipe via a connector. The connector includes an outer pipe and a first channel and a second channel located within the outer pipe. The inlet of the first channel is connected to the heat exchanger, the inlet of the second channel is connected to the exhaust pipe, and the outlets of both the first channel and the second channel are connected to the water outlet pipe.
[0006] Preferably, an inner pipe is coaxially arranged inside the outer pipe, the inner pipe and the outer pipe form the first channel, and the inner side of the inner pipe forms the second channel.
[0007] Preferably, the inlet of the first channel is located on the side wall of the outer pipe, and the inlet of the second channel is located at the top of the outer pipe.
[0008] Preferably, the generator set includes a diesel engine and a generator, and the water inlet pump is connected to the output end of the diesel engine.
[0009] Preferably, it also includes a housing, the generator set is disposed inside the housing, the housing is provided with a water inlet and a water outlet, the water inlet pipe is adapted to be connected to the outside of the ship through the water inlet, and the water outlet pipe is adapted to be connected to the outside of the ship through the water outlet.
[0010] Preferably, the housing is further provided with a first vent and a second vent, the first vent being located at the lower part of one end of the housing and the second vent being located at the upper part of the other end of the housing.
[0011] Preferably, it also includes a cooling fan adapted to form a cooling airflow between the first vent and the second vent.
[0012] Preferably, the heat exchanger has a heat exchange chamber connected to the inner circulation channel; the heat exchange chamber has a plurality of heat exchange pipes, one end of each heat exchange pipe is connected to the inlet pipe, and the other end of each heat exchange pipe is connected to the outlet pipe.
[0013] Preferably, the heat exchanger has a heat exchange chamber connected to the inner circulation channel; the heat exchange chamber has a heat exchange pipe that coils and folds multiple times within the heat exchange chamber, one end of the heat exchange pipe is connected to the inlet pipe, and the other end of the heat exchange pipe is connected to the outlet pipe.
[0014] Compared with the prior art, the marine generator using external water filtration for exhaust provided in this application embodiment cools the generator set through an internal circulation channel and then introduces a large amount of external water flow through an external circulation channel to cool the internal circulation channel. This effectively improves the cooling efficiency of the generator set and prevents the heat from the generator set from dissipating into the ship and causing the ship's internal temperature to become too high. The exhaust gas generated by the generator set is discharged to the outlet pipe of the cooling system through the exhaust pipe. By discharging cooling water through the outlet pipe, the exhaust gas is discharged at the same time. This not only improves the exhaust gas emission effect of the marine generator and prevents the exhaust gas generated by the generator set from spreading into the crew's living space, but also eliminates the need for an additional exhaust gas discharge system, simplifying the structure of the marine generator. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0016] Figure 2 This is a partial structural schematic diagram of an embodiment of the present utility model. Figure 1 ;
[0017] Figure 3This is a partial structural schematic diagram of an embodiment of the present utility model. Figure 2 ;
[0018] Figure 4 This is a cross-sectional view of the heat exchanger according to an embodiment of the present invention;
[0019] Figure 5 This is a cross-sectional view of the connector in an embodiment of this utility model.
[0020] Figure label:
[0021] 100. Generator set; 210. Internal circulation channel; 220. Heat exchanger; 221. Heat exchange chamber; 222. Heat exchange pipe; 231. Water inlet pipe; 232. Water inlet pump; 233. Water outlet pipe; 300. Exhaust pipe; 310. Connector; 311. External pipe; 312. First channel; 312. Second channel; 314. Internal pipe; 400. Shell; 410. Water inlet interface; 420. Water outlet interface; 430. First vent. Detailed Implementation
[0022] 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 preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0023] Reference Figures 1-5 As shown in the figure, this application provides a marine generator that uses external water filtration for exhaust, including a generator set 100, a cooling system, and an exhaust pipe 300; the cooling system includes an internal circulation channel 210, a heat exchanger 220, and an external circulation channel; the internal circulation channel 210 passes through the generator set 100 and the heat exchanger 220, the external circulation channel includes an inlet pipe 231, an inlet pump 232, and an outlet pipe 233, one end of the inlet pipe 231 is adapted to be connected to a water source outside the ship, the other end of the inlet pipe 231 is connected to the heat exchanger 220 after passing through the inlet pump 232, one end of the outlet pipe 233 is connected to the heat exchanger 220, and the other end of the outlet pipe 233 is adapted to be connected to a water source outside the ship; one end of the exhaust pipe 300 is connected to the generator set 100, and the other end of the exhaust pipe 300 is connected to the outlet pipe 233.
[0024] like Figure 1As shown in the embodiment of this application, the marine generator utilizing external water filtration for exhaust is suitable for use on a ship. It includes a housing 400, a generator set 100, and a cooling system. The generator set 100 and the cooling system are housed within the housing 400. In this embodiment, the generator set 100 is a diesel generator, mainly consisting of a diesel engine and a generator. The diesel engine uses diesel fuel as its energy source and drives the generator rotor to output electrical energy. Diesel generators are existing technology and will not be described in detail here.
[0025] like Figure 2 As shown, the cooling system includes an inner circulation channel 210, a heat exchanger 220, and an outer circulation channel. The inner circulation channel 210 is a circulating pipe, a portion of which passes through or is adjacent to the generator set 100. Another portion of the pipe in the inner circulation channel 210 passes through the heat exchanger 220. The inner circulation channel 210 contains a circulating cooling medium, which can be achieved by connecting a water pump in series in the inner circulation channel 210. In this embodiment, the cooling medium in the inner circulation channel 210 is fresh water. In other embodiments, the cooling medium may be brine or oil.
[0026] like Figure 3 As shown, the external circulation channel includes an inlet pipe 231, an inlet pump 232, and an outlet pipe 233. One end of the inlet pipe 231 is adapted to connect to a water source outside the ship, such as river water or seawater, through an inlet port 410 on the hull 400. The other end of the inlet pipe 231 connects to a heat exchanger 220 after passing through the inlet pump 232. One end of the outlet pipe 233 is connected to the heat exchanger 220, and the other end is adapted to connect to a water source outside the ship through an outlet port 420 on the hull 400. The inlet pump 232 is connected in series in the inlet pipe 231 and is driven by the generator set 100. Specifically, the inlet pump 232 is connected to the output end of a diesel engine and is driven by the diesel engine in the generator set 100. The inlet pump 232 pumps river water or seawater from outside the ship to the heat exchanger 220, and after passing through the heat exchanger 220, it is output to the outside of the ship through the outlet pipe 233.
[0027] In some embodiments, such as Figure 4As shown, the heat exchanger 220 has a heat exchange chamber 221, which is connected to the inner circulation channel 210. The cooling medium in the inner circulation channel 210 enters the heat exchange chamber 221 from one port of the heat exchange chamber 221, and then exits from the other port of the heat exchange chamber 221 before flowing back into the inner circulation channel 210. The heat exchange chamber 221 has a heat exchange pipe 222, one end of which is connected to the inlet pipe 231, and the other end of which is connected to the outlet pipe 233. River water or seawater pumped in by the inlet pump 232 passes through the heat exchange pipe 222 and is then discharged by the outlet pipe 233.
[0028] like Figure 5 As shown, an exhaust channel is connected between the generator set 100 and the water outlet pipe 233. One end of the exhaust channel is connected to the exhaust port of the generator set 100, and the other end is connected to the water outlet pipe 233. When the generator set 100 is working,
[0029] The marine generator using external water filtration for exhaust provided in this application embodiment generates electricity by burning diesel fuel during operation. During power generation, the generator set 100 drives the cooling medium within the inner circulation channel 210 to circulate between the generator set 100 and the heat exchanger 220. Simultaneously, the generator set 100 drives the inlet pump 232 to pump water (such as river water or seawater) from outside the ship to the heat exchanger 220 through the inlet pipe 231 of the outer circulation channel. When the external water in the outer circulation channel passes through the heat exchange pipe 222 within the heat exchanger 220, it exchanges heat with the cooling medium circulating within the heat exchanger 220, thus lowering the temperature of the internal circulating cooling medium. The cooled cooling medium then flows to the generator set 100 and exchanges heat with it, further lowering the temperature of the generator set 100. The heated external water is then discharged outside the ship through the outlet channel, effectively preventing the temperature inside the ship from rising. Meanwhile, the exhaust gas generated by the diesel combustion of the generator set 100 can be transported to the water outlet pipe 233 through the exhaust pipe 300. The exhaust gas mixes with the external water in the water outlet pipe 233 and is discharged together with the external water, thereby effectively preventing the exhaust gas from spreading into the crew's living space.
[0030] Compared with the prior art, the marine generator using external water filtration exhaust provided in this application embodiment cools the generator set 100 through the internal circulation channel 210, and then introduces a large amount of external water flow through the external circulation channel to cool the internal circulation channel 210. This can effectively improve the cooling efficiency of the generator set 100 and prevent the heat of the generator set 100 from dissipating into the ship and causing the ship's internal temperature to become too high. The exhaust gas generated by the generator set 100 is discharged to the water outlet pipe 233 of the cooling system through the exhaust pipe 300. By discharging cooling water through the water outlet pipe 233, the exhaust gas is discharged at the same time. This not only improves the exhaust gas emission effect of the marine generator and prevents the exhaust gas generated by the generator set 100 from spreading into the crew's living space, but also eliminates the need for an additional exhaust gas discharge system, simplifying the structure of the marine generator.
[0031] In some preferred embodiments, such as Figure 5 As shown, the exhaust pipe 300 is connected to the water outlet pipe 233 via a connector 310. The connector 310 includes an outer pipe 311 and a first channel 312 and a second channel 313 located within the outer pipe 311. The inlet of the first channel 312 is connected to the heat exchanger 220, and the inlet of the second channel 313 is connected to the exhaust pipe 300. The outlets of both the first channel 312 and the second channel 313 are connected to the water outlet pipe 233. An inner pipe 314 is coaxially arranged within the outer pipe 311, forming the first channel 312 between the inner pipe 314 and the outer pipe 311. The second channel 313 is formed on the inner side of the inner pipe 314. The inlet of the first channel 312 is located on the side wall of the outer pipe 311, and the inlet of the second channel 313 is located on the top of the outer pipe 311. The connector 310 serves as the connection area between the exhaust pipe 300 and the water outlet pipe 233. It has two separate channels, which can provide sufficient buffer space for the mixing of exhaust gas and cooling water, and at the same time can stagger the inlet of exhaust gas into the water outlet channel and the inlet of cooling water into the water outlet channel, so as to prevent exhaust gas from entering the heat exchanger 220 or cooling water from entering the exhaust pipe 300.
[0032] In some preferred embodiments, such as Figure 4 As shown, multiple heat exchange pipes 222 are provided in the heat exchange chamber 221. One end of each heat exchange pipe 222 is connected to the inlet water pipe 231, and the other end of each heat exchange pipe 222 is connected to the outlet water pipe 233. Alternatively, there may be only one heat exchange pipe 222 in the heat exchange chamber, but this heat exchange pipe 222 is coiled and folded multiple times within the heat exchange chamber 221. By providing multiple heat exchange pipes 222 in the heat exchange chamber 221 or by coiling and folding the heat exchange pipes 222, the surface area of the heat exchange pipes 222 within the heat exchange chamber 221 is increased, thereby effectively improving the heat exchange efficiency between the external circulation channel and the internal circulation channel 210.
[0033] In some preferred embodiments, the inlet pipe 231, the outlet pipe 233, and the heat exchange pipe 222 are made of corrosion-resistant materials such as rubber, copper alloy, aluminum alloy, and stainless steel. In other preferred embodiments, the heat exchange pipe 222 is made of materials that have both thermal conductivity and corrosion resistance, such as copper alloy, aluminum alloy, or stainless steel.
[0034] In some preferred embodiments, the housing 400 is further provided with a first vent 430 and a second vent 440. The first vent 430 is located at the lower part of one end of the housing 400, and the second vent 440 is located at the upper part of the other end of the housing 400. A cooling fan is also provided inside the housing 400. The cooling fan is adapted to form a cooling airflow between the first vent 430 and the second vent 440 to further improve the cooling efficiency of the generator set 100.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A marine generator that filters exhaust gas with outside water, characterized by: The cooling system comprises an inner circulation channel, a heat exchanger and an outer circulation channel; the inner circulation channel is arranged through the generator set and passes through the heat exchanger; the outer circulation channel comprises a water inlet pipeline, a water inlet pump and a water outlet pipeline; one end of the water inlet pipeline is adapted to be connected to a water source outside the ship; the other end of the water inlet pipeline is connected to the heat exchanger through the water inlet pump; one end of the water outlet pipeline is connected to the heat exchanger; the other end of the water outlet pipeline is adapted to be connected to a water source outside the ship; one end of the exhaust pipeline is connected to the generator set; the other end of the exhaust pipeline is connected to the water outlet pipeline.
2. The marine generator that exhausts with outside water filtration according to claim 1, characterized in that: The exhaust pipeline is connected to the water outlet pipeline through a connecting piece; the connecting piece comprises an outer pipeline and first and second channels arranged in the outer pipeline; the inlet of the first channel is connected to the heat exchanger; the inlet of the second channel is connected to the exhaust pipeline; the outlets of the first and second channels are both connected to the water outlet pipeline.
3. The marine generator that exhausts with outside water filtration according to claim 2, characterized in that: The inner pipeline is coaxially arranged in the outer pipeline; the first channel is formed between the inner pipeline and the outer pipeline; the second channel is formed on the inner side of the inner pipeline.
4. The generator for a ship that exhausts water outside using a filter according to claim 3, characterized in that: The inlet of the first channel is arranged on the side wall of the outer pipeline; the inlet of the second channel is arranged on the top of the outer pipeline.
5. The marine generator that exhausts with external water filtration according to claim 1, characterized in that: The generator set comprises a diesel engine and a generator; the water inlet pump is connected to the output end of the diesel engine.
6. The marine generator that exhausts with external water filtration according to claim 1, characterized in that: The generator set is arranged in a shell; the shell is provided with a water inlet interface and a water outlet interface; the water inlet pipeline is adapted to be connected to the outside of the ship through the water inlet interface; the water outlet pipeline is adapted to be connected to the outside of the ship through the water outlet interface.
7. The marine generator utilizing external water filtration of exhaust gases according to claim 6, characterized in that: The shell is further provided with a first air vent and a second air vent; the first air vent is arranged on the lower part of one end of the shell; the second air vent is arranged on the upper part of the other end of the shell.
8. The marine generator utilizing external water filtration of exhaust gases according to claim 7, characterized in that: A cooling fan is further arranged; the cooling fan is adapted to form a cooling air beam between the first air vent and the second air vent.
9. The marine generator utilizing external water filtration of exhaust gases according to claim 1, characterized in that: The heat exchanger is provided with a heat exchange cavity; the heat exchange cavity is connected to the inner circulation channel; the heat exchange cavity is provided with a plurality of heat exchange pipelines; one end of each heat exchange pipeline is connected to the water inlet pipeline; the other end of each heat exchange pipeline is connected to the water outlet pipeline.
10. The marine generator that exhausts with external water filtration according to claim 1, characterized in that: The heat exchanger is provided with a heat exchange cavity; the heat exchange cavity is connected to the inner circulation channel; the heat exchange cavity is provided with a heat exchange pipeline; the heat exchange pipeline is spirally folded multiple times in the heat exchange cavity; one end of the heat exchange pipeline is connected to the water inlet pipeline; the other end of the heat exchange pipeline is connected to the water outlet pipeline.