Diesel generating set sharing heat dissipation mechanism

Abstract

The utility model provides a diesel generating set sharing a heat dissipation mechanism, which comprises a first power unit and a second power unit which are backup for each other, and further comprises a heat exchanger, and the heat exchanger comprises a first heat exchange piece; the first heat exchange part is provided with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is connected with a first flow dividing pipe, the first flow dividing pipe is connected with a first water valve and a first standby water valve, the liquid outlet pipe is connected with a second flow dividing pipe, and the second flow dividing pipe is connected with a second water valve and a second standby water valve. The first water valve and the second water valve are connected to the first power unit through pipelines respectively, and the first standby water valve and the second standby water valve are connected to the second power unit through pipelines respectively. The device has the advantages that the equipment cost is reduced, and the occupied space is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, in particular to a diesel generator set with a shared heat dissipation mechanism. Background Art

[0002] With the development of diesel generator sets, a type of diesel generator set now includes two power units that serve as backup. That is, while one power unit is operating, the other serves as a backup. In environments that require high reliability, stability, and continuity, the configuration of two power units as backup provides redundancy. If either power unit fails or power demand changes, the other power unit can quickly take over the power supply, avoiding production stoppages or service interruptions.

[0003] Currently, existing diesel generator sets are equipped with a heat dissipation mechanism for each of the two power units. When either power unit is operating, the heat dissipation mechanism on that power unit dissipates heat, ensuring that the temperature remains within a normal range. However, installing a heat dissipation mechanism for each generator is expensive and takes up a lot of space. Utility Model Content

[0004] In order to improve the problems of high cost and large space occupied by existing equipment, the utility model provides a power generation device with dual power units sharing a set of heat dissipation mechanisms.

[0005] The utility model provides a diesel generator set with a shared heat dissipation mechanism, which adopts the following technical solutions:

[0006] A diesel generator set with a shared heat dissipation mechanism comprises a first power unit and a second power unit serving as backup for each other, and also comprises a heat exchanger, wherein the heat exchanger comprises a first heat exchange element;

[0007] The first heat exchanger is provided with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is connected to the No. 1 diversion pipe, the No. 1 diversion pipe is respectively connected to the first water valve and the first backup water valve, the liquid outlet pipe is connected to the No. 2 diversion pipe, the No. 2 diversion pipe is respectively connected to the second water valve and the second backup water valve, the first water valve and the second water valve are respectively connected to the first power unit through pipelines, and the first backup water valve and the second backup water valve are respectively connected to the second power unit through pipelines.

[0008] With the above technical solution, when the first power unit is operating, the second power unit serves as a backup. The first and second water valves are opened, and the high-temperature liquid in the engine of the first power unit enters the first heat exchanger through the first shunt pipe and the liquid inlet pipe. The first heat exchanger exchanges the high-temperature liquid for a low-temperature liquid, which then enters the generator of the first power unit through the liquid outlet pipe and the second shunt pipe. Through continuous heat exchange between the liquids, heat is continuously dissipated from the engine of the first power unit. When the second power unit is operating, the first power unit serves as a backup. The first and second backup water valves are opened, and the high-temperature liquid in the engine of the second power unit enters the first heat exchanger through the first shunt pipe and the liquid inlet pipe. The first heat exchanger exchanges the high-temperature liquid for a low-temperature liquid, which then enters the generator of the second power unit through the liquid outlet pipe and the second shunt pipe. Through continuous heat exchange between the liquids, heat is continuously dissipated from the engine of the second power unit. This allows the first and second power units, which serve as backup for each other, to share the first heat exchanger, which helps reduce equipment costs and space requirements.

[0009] Preferably, the first power unit includes a frame, an engine and a generator arranged on the frame, and the engine and the generator are coaxially connected. The second power unit has the same structure as the first power unit, but the engine of the first power unit is a liquid-cooled engine, and the engine of the second power unit is a dual-cooling system engine, and the engine of the second power unit combines air intercooling and liquid cooling.

[0010] The above technical solution enables the engine to be used under high loads and in extreme environments. By switching between the first and second power units, the engine can respond to different situations and improve overall power supply reliability and flexibility.

[0011] Preferably, the heat exchanger further includes a second heat exchange element, the first heat exchange element is a liquid-cooled radiator, and the second heat exchange element is an intercooler.

[0012] Through the above technical solution, the first heat exchanger provides liquid cooling for the engine of the first power unit or the engine of the second power unit, and the second heat exchanger provides intercooling for the engine of the second power unit, thereby meeting the heat dissipation requirements of the engine of the first power unit and the engine of the second power unit.

[0013] Preferably, the heat exchanger also includes an expansion water tank, which is connected to the first heat exchange element through a pipeline, and the expansion water tank is provided with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is connected to the third diversion pipe, the third diversion pipe is respectively connected to the third water valve and the third backup water valve, the liquid outlet pipe is connected to the fourth diversion pipe, the fourth diversion pipe is respectively connected to the fourth water valve and the fourth backup water valve, the third water valve and the fourth water valve are respectively connected to the engine of the first power unit through pipelines, and the third backup water valve and the fourth backup water valve are respectively connected to the engine of the second power unit through pipelines.

[0014] Through the above technical solution, when the first power unit dissipates heat, the third water valve and the fourth water valve are opened, and the low-temperature liquid exchanges heat with the generator of the first power unit. When it is converted into a high-temperature liquid, the liquid will expand as the temperature rises. The expanded liquid enters the expansion water tank through the expansion outlet pipe, the No. 3 diversion pipe and the liquid inlet pipe. When waiting for the temperature to drop, part of the liquid in the expansion water tank flows back to the generator of the first power unit through the liquid outlet pipe, the No. 4 diversion pipe and the contraction inlet pipe, and the other part of the liquid in the expansion water tank flows to the first heat sink, thereby ensuring pressure balance.

[0015] Similarly, when the second power unit is dissipating heat, the third backup water valve and the third backup water valve are opened, and the third water valve and the fourth water valve are closed. The low-temperature liquid exchanges heat with the generator of the second power unit. When it is converted into high-temperature liquid, the liquid will expand as the temperature rises. The expanded liquid enters the expansion water tank through the No. 3 shunt pipe and the liquid inlet pipe. When waiting for the temperature to drop, part of the liquid in the expansion water tank flows back to the generator of the second power unit through the liquid outlet pipe and the No. 4 shunt pipe, and the other part of the liquid in the expansion water tank flows to the first heat sink, thereby ensuring pressure balance.

[0016] Preferably, the engine of the second power unit also includes a cold air input end for receiving low-temperature gas and a hot air output end for discharging high-temperature gas. The second heat exchanger is provided with an air inlet pipe, and the end of the air inlet pipe away from the second heat exchanger is connected to the hot gas output end. The second heat exchanger is provided with an air outlet pipe, and the end of the air outlet pipe away from the second heat exchanger is connected to the cold air input end.

[0017] With the above technical solution, when the second power unit is operating, the high-temperature gas generated by the engine of the second power unit is discharged from the hot gas output end. The high-temperature gas enters the second heat exchanger through the air inlet pipe. The second heat exchanger converts the high-temperature gas into low-temperature gas and discharges it through the air outlet pipe. The low-temperature gas flows back to the engine of the second power unit through the cold air input end through the air outlet pipe. This provides air cooling and heat dissipation for the engine of the second power unit.

[0018] Preferably, the No. 1 diversion pipe, the No. 2 diversion pipe, the No. 3 diversion pipe and the No. 4 diversion pipe are all three-way pipes.

[0019] Through the above technical solution, the use of a three-way pipe facilitates adjustment of flow direction and flow rate under different working conditions, is suitable for various operating requirements, and can easily expand and transform the system.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] When the first power unit is working, the second power unit is used as a backup. The first water valve, the second water valve, the third water valve and the fourth water valve are opened. The high-temperature liquid in the engine of the first power unit enters the first heat exchanger through the No. 1 shunt pipe and the liquid inlet pipe. At the same time, the expanded liquid enters the expansion water tank through the expansion outlet pipe, the No. 3 shunt pipe and the liquid inlet pipe. The first heat exchanger exchanges the high-temperature liquid for a low-temperature liquid. The low-temperature liquid enters the generator of the first power unit through the liquid outlet pipe and the No. 2 shunt pipe. Through continuous heat exchange between the liquids, the heat of the engine of the first power unit is continuously dissipated. While waiting for the temperature to drop, part of the liquid in the expansion water tank flows back to the generator of the first power unit through the liquid outlet pipe, the No. 4 shunt pipe and the contraction inlet pipe, and the other part of the liquid in the expansion water tank flows to the first heat sink, thereby achieving heat dissipation for the first power unit.

[0022] When the second power unit is operating, the first power unit serves as a backup. The first, second, third, and fourth backup water valves are opened, and the high-temperature liquid in the engine of the second power unit enters the first heat exchanger through the No. 1 shunt pipe and the liquid inlet pipe. Simultaneously, the expanded liquid enters the expansion tank through the No. 3 shunt pipe and the liquid inlet pipe. The first heat exchanger converts the high-temperature liquid into low-temperature liquid, which then enters the generator of the second power unit through the liquid outlet pipe and the No. 2 shunt pipe. Through continuous heat exchange between the liquids, the engine of the second power unit is continuously cooled. While waiting for the temperature to drop, part of the liquid in the expansion tank flows back to the generator of the first power unit through the liquid outlet pipe and the No. 4 shunt pipe, while the remaining part of the liquid in the expansion tank flows to the first heat sink. The high-temperature gas of the second power unit is discharged from the hot gas output port, and the high-temperature gas enters the second heat exchanger through the inlet pipe. The second heat exchanger converts the high-temperature gas into low-temperature gas and discharges it through the outlet pipe. The low-temperature gas then flows back to the engine of the second power unit through the outlet pipe from the cold gas input port, thereby achieving heat dissipation for the second power unit.

[0023] Through the first heat exchange element and the second heat exchange element, the heat exchanger is applicable to a variety of different types of power units or combinations of different types of power units, thereby improving flexibility, reducing equipment costs, and reducing occupied space. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural diagram of an embodiment of the present utility model.

[0026] Figure 2 It is a structural side view of an embodiment of the utility model.

[0027] Figure 3 It is a structural schematic diagram of the heat dissipation mechanism in an embodiment of the present utility model.

[0028] Figure 4 It is a structural diagram of the first heat exchange element in an embodiment of the present utility model.

[0029] Figure 5 It is a schematic diagram of the relationship between the first power unit and the heat dissipation mechanism in an embodiment of the present utility model.

[0030] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0031] Figure 7 It is a structural schematic diagram of the second heat exchange element in an embodiment of the present utility model.

[0032] Among them, the component numbers are as follows: 1. First power unit; 11. Frame; 12. Engine; 121. Expansion outlet pipe; 122. Contraction inlet pipe; 13. Generator; 2. Heat exchanger; 21. First heat exchange element; 22. Second heat exchange element; 23. Expansion water tank; 24. Mounting frame; 3. Liquid inlet pipe; 4. Liquid outlet pipe; 5. No. 1 diverter pipe; 6. First water valve; 7. First backup water valve; 8. No. 2 diverter pipe; 9. Second water valve; 10. Second backup water valve; 14. Liquid inlet pipe; 15. Liquid outlet pipe; 16. No. 3 diverter pipe; 17. Third water valve; 18. Third backup water valve; 19. No. 4 diverter pipe; 20. Fourth water valve; 25. Fourth backup water valve; 26. Air inlet pipe; 27. Air outlet pipe; 28. Base frame. DETAILED DESCRIPTION

[0033] The following is a combination of the appended examples of the present invention Figures 1 to 7The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] A diesel generator set with a shared heat dissipation mechanism, referring to Figure 1 , comprising a first power unit 1, a second power unit (not shown), and a heat dissipation mechanism. Both the first power unit 1 and the second power unit are used to generate electricity. The first power unit 1 and the second power unit serve as backup for each other. That is, when the first power unit 1 is operating, the second power unit serves as a backup, and when the second power unit is operating, the first power unit 1 serves as a backup. The heat dissipation mechanism is used to dissipate heat from the first power unit 1 or the second power unit.

[0035] When the first power unit 1 is working, the second power unit is a backup, and the heat dissipation mechanism dissipates heat for the first power unit 1. When the second power unit is working, the first power unit 1 is a backup, and the heat dissipation mechanism dissipates heat for the second power unit.

[0036] Specifically, refer to Figure 1 and Figure 2 The first power unit 1 includes a rectangular frame 11, an engine 12 and a generator 13 arranged on the frame 11. The engine 12 and the generator 13 are both relatively mature technologies in the existing technology and will not be described in detail here. Among them, the engine 12 of the first power unit 1 is a liquid-cooled engine. The engine 12 and the generator 13 of the first power unit 1 are distributed in sequence along the length direction of the frame 11, and the engine 12 and the generator 13 of the first power unit 1 are coaxially connected. When the first power unit 1 is working, the second power unit is a backup, which generates mechanical energy by driving the engine 12 of the first power unit 1 and drives the generator 13 to generate electricity. At the same time, the heat dissipation mechanism is used to dissipate heat for the engine 12 of the first power unit 1, thereby realizing the continuous generation and output of electric energy.

[0037] The second power unit (not shown) has a similar structure to the first power unit 1 , differing in that its engine, unlike engine 12 of the first power unit 1 , utilizes a dual-cooling system. In this embodiment, the engine utilizes a combination of air intercooling and liquid cooling. This dual-cooling system facilitates the use of engine 12 under high loads and in extreme environments. Therefore, when the second power unit is operating, the first power unit 1 serves as a backup, generating mechanical energy by driving the second power unit's engine, which in turn drives the second power unit's generator 13 to generate electricity. Simultaneously, heat is dissipated from the second power unit's engine via a heat dissipation mechanism.

[0038] Specifically, refer to Figure 2 and Figure 3 The heat dissipation mechanism includes a rectangular base frame 28 and a heat exchanger 2 mounted on the base frame 28. The base frame 28 is connected to one end of the frame 11 and is close to the engine 12 of the first power unit 1. The base frame 28 is distributed along the width of the frame 11 and is connected to the frame 11 by bolts.

[0039] Reference Figure 3 and Figure 4 The heat exchanger 2 includes a mounting bracket 24 mounted on a base frame 28, a first heat exchange element 21 mounted on the mounting bracket 24, and a second heat exchange element 22. The first heat exchange element 21 is used to dissipate heat for a liquid-cooled engine. The first heat exchange element 21 is a liquid-cooled radiator and is located near the bottom of the mounting bracket 24. The second heat exchange element 22 is used to dissipate heat for an intercooled engine. The second heat exchange element 22 is an intercooler and is located on the top side of the first heat exchanger.

[0040] Reference Figure 5 and Figure 6 The engine 12 of the first power unit 1 includes a cold liquid inlet for connecting to a low-temperature liquid and a hot liquid outlet for discharging a high-temperature liquid. When dissipating heat, the low-temperature liquid is connected to the cold liquid inlet, and the low-temperature liquid flows in the engine 12 of the first power unit 1, and heat is exchanged with the engine 12 of the first power unit 1, so that the engine 12 of the first power unit 1 is cooled, and the low-temperature liquid is converted into a high-temperature liquid, and the high-temperature liquid is discharged from the hot liquid outlet.

[0041] Reference Figure 4 and Figure 6 , the first heat exchanger 21 is provided with a liquid inlet pipe 3. The end of the liquid inlet pipe 3 away from the first heat exchanger 21 is connected to the No. 1 diversion pipe 5, and the No. 1 diversion pipe 5 is a three-way pipe, and the first heat exchanger 21 is connected to the first end of the No. 1 diversion pipe 5. The second end of the No. 1 diversion pipe 5 is connected to the first water valve 6, and the other end of the first water valve 6 is connected to the hot liquid outlet through a pipeline. Therefore, when heat is dissipated, the first water valve 6 is opened, and the high-temperature liquid in the engine 12 of the first power unit 1 can enter the first heat exchanger 21 through the No. 1 diversion pipe 5 and the liquid inlet pipe 3, and the first heat exchanger 21 exchanges the high-temperature liquid for a low-temperature liquid. Combined Figure 3The first heat exchanger 21 is also provided with a liquid outlet pipe 4. The end of the liquid outlet pipe 4 away from the first heat exchanger 21 is connected to the second diversion pipe 8, which is also a three-way pipe. The first end of the second diversion pipe 8 is connected to the liquid outlet pipe 4. The second end of the second diversion pipe 8 is connected to the second water valve 9, and the other end of the second water valve 9 is connected to the cold liquid inlet. Therefore, when heat is dissipated, the second water valve 9 is opened, and the low-temperature liquid in the first heat exchanger 21 can enter the generator 13 of the first power unit 1 through the liquid outlet pipe 4 and the second diversion pipe 8, and perform heat exchange with the engine 12 of the first power unit 1.

[0042] In addition, refer to Figure 3 and Figure 4 The heat exchanger 2 also includes an expansion water tank 23, which is located near the top side of the mounting bracket 24. The expansion water tank 23 is connected to the first heat exchange element 21 through a pipe. The expansion water tank 23 is provided with a liquid inlet pipe 14, which is connected to the third diverter pipe 16. The third diverter pipe 16 is a tee pipe, and the first end of the third diverter pipe 16 is connected to the liquid inlet pipe 14. The second end of the third diverter pipe 16 is connected to the third water valve 17. The engine 12 of the first power unit 1 is also connected to an expansion water outlet pipe 121, which is connected to the hot liquid outlet through a pipe, and the expansion water outlet pipe 121 is connected to the third water valve 17. The expansion water tank 23 is also provided with a liquid outlet pipe 15, which is connected to the fourth diverter pipe 19. The fourth diverter pipe 19 is also a tee pipe, and the first end of the fourth diverter pipe 19 is connected to the liquid outlet pipe 15. The second end of the No. 4 diversion pipe 19 is connected to the fourth water valve 20, and the engine 12 of the first power unit 1 is also connected to the contraction water inlet pipe 122, the contraction water inlet pipe 122 is connected to the hot liquid outlet through a pipeline, and the expansion water outlet pipe 121 is connected to the fourth water valve 20.

[0043] Reference Figure 3 and Figure 4 When the first power unit 1 is dissipating heat, the third water valve 17 and the fourth water valve 20 are opened, and the low-temperature liquid exchanges heat with the generator 13 of the first power unit 1. When it is converted into high-temperature liquid, the liquid will expand as the temperature rises. The expanded liquid enters the expansion water tank 23 through the expansion outlet pipe 121, the No. 3 shunt pipe 16 and the liquid inlet pipe 14. When waiting for the temperature to drop, part of the liquid in the expansion water tank 23 flows back to the generator 13 of the first power unit 1 through the liquid outlet pipe 15, the No. 4 shunt pipe 19 and the contraction inlet pipe 122, and the other part of the liquid in the expansion water tank 23 flows to the first heat sink, thereby ensuring pressure balance.

[0044] When the first power unit 1 is operating, the second power unit serves as a backup. The first water valve 6, second water valve 9, third water valve 17, and fourth water valve 20 are opened, and the high-temperature liquid in the engine 12 of the first power unit 1 enters the first heat exchanger 21 through the No. 1 shunt pipe 5 and the liquid inlet pipe 3. Simultaneously, the expanded liquid enters the expansion tank 23 through the expansion outlet pipe 121, the No. 3 shunt pipe 16, and the liquid inlet pipe 14. The first heat exchanger 21 converts the high-temperature liquid into low-temperature liquid, which then enters the generator 13 of the first power unit 1 through the liquid outlet pipe 4 and the No. 2 shunt pipe 8. Through continuous heat exchange between the liquids, the heat is continuously dissipated from the engine 12 of the first power unit 1. While waiting for the temperature to drop, some of the liquid in the expansion tank 23 flows back to the generator 13 of the first power unit 1 through the liquid outlet pipe 15, the No. 4 shunt pipe 19, and the contraction inlet pipe 122, while the remaining liquid in the expansion tank 23 flows to the first heat sink. When the second power unit is working, the first power unit 1 serves as a backup, and the first heat exchange element 21 and the second heat exchange element 22 work together to dissipate heat for the engine of the second power unit.

[0045] The engine of the second power unit includes a cold liquid input port for receiving low-temperature liquid and a hot liquid output port for discharging high-temperature liquid. During heat dissipation, low-temperature liquid is introduced through the cold liquid input port. The low-temperature liquid flows through the engine of the second power unit, exchanging heat with the engine of the second power unit, cooling the engine of the second power unit. The low-temperature liquid is then converted to high-temperature liquid, which is then discharged through the hot liquid output port.

[0046] Reference Figure 3 and Figure 6 The third end of the No. 1 shunt pipe 5 is connected to a first backup water valve, the other end of which is connected to the hot liquid output port. Therefore, when the engine of the second power unit is dissipating heat, the first backup water valve is opened and the first water valve 6 is closed. The high-temperature liquid in the engine of the second power unit can enter the first heat exchanger 21 through the No. 1 shunt pipe 5 and the liquid inlet pipe 3. The first heat exchanger 21 then exchanges the high-temperature liquid for low-temperature liquid.

[0047] Reference Figure 3 and Figure 4 The third end of the second shunt pipe 8 is connected to a second backup water valve, the other end of which is connected to the cold liquid input. Therefore, when dissipating heat, the second backup water valve is opened and the second water valve 9 is closed. The low-temperature liquid in the first heat exchanger 21 can then pass through the liquid outlet pipe 4 and the second shunt pipe 8 into the generator 13 of the second power unit, exchanging heat with the engine of the second power unit.

[0048] When the second power unit is working, the first power unit 1 is a backup, the first water valve 6 and the second water valve 9 are closed, and the first backup water valve and the second backup water valve are opened. The high-temperature liquid in the engine of the second power unit enters the first heat exchanger 21 through the No. 1 shunt pipe 5 and the liquid inlet pipe 3. The first heat exchanger 21 exchanges the high-temperature liquid for low-temperature liquid. The low-temperature liquid enters the generator 13 of the second power unit through the liquid outlet pipe 4 and the No. 2 shunt pipe 8. Through continuous heat exchange between the liquids, the heat of the engine of the second power unit is continuously dissipated.

[0049] Continue to refer to Figure 3 and Figure 4 The third end of the No. 3 diversion pipe 16 is connected to a third backup water valve 18, the other end of which is connected to the hot liquid output terminal via a pipeline. The third end of the No. 4 diversion pipe 19 is connected to a fourth backup water valve 25, the other end of which is connected to the hot liquid output terminal via a pipeline.

[0050] Reference Figure 3 and Figure 4 When the second power unit is dissipating heat, the third backup water valve 18 and the third backup water valve 18 are opened, and the third water valve 17 and the fourth water valve 20 are closed. The low-temperature liquid exchanges heat with the generator 13 of the second power unit. When it is converted into high-temperature liquid, the liquid expands as the temperature rises. The expanded liquid enters the expansion water tank 23 through the No. 3 shunt pipe 16 and the liquid inlet pipe 14. When waiting for the temperature to drop, part of the liquid in the expansion water tank 23 flows back to the generator 13 of the second power unit through the liquid outlet pipe 15 and the No. 4 shunt pipe 19, and the other part of the liquid in the expansion water tank 23 flows to the first heat sink, thereby ensuring pressure balance.

[0051] Reference Figure 7 The engine of the second power unit also includes a cold air input port for receiving low-temperature gas and a hot air output port for discharging high-temperature gas. The second heat exchanger 22 is provided with an air inlet pipe 26, the end of which is remote from the second heat exchanger 22 and connected to the hot air output port. The second heat exchanger 22 is provided with an air outlet pipe 27, the end of which is remote from the second heat exchanger 22 and connected to the cold air input port.

[0052] When the second power unit is operating, the first power unit 1 serves as a backup. The first, second, third, and fourth backup water valves 18 and 25 are opened, and the high-temperature liquid in the engine of the second power unit enters the first heat exchanger 21 through the No. 1 shunt pipe 5 and the liquid inlet pipe 3. Simultaneously, the expanded liquid enters the expansion tank 23 through the No. 3 shunt pipe 16 and the liquid inlet pipe 14. The first heat exchanger 21 converts the high-temperature liquid into low-temperature liquid, which then enters the generator 13 of the second power unit through the liquid outlet pipe 4 and the No. 2 shunt pipe 8. Through continuous heat exchange between the liquids, the heat from the engine of the second power unit is continuously dissipated. While waiting for the temperature to drop, part of the liquid in the expansion tank 23 flows back to the generator 13 of the first power unit 1 through the liquid outlet pipe 15 and the No. 4 shunt pipe 19, while the remaining part of the liquid in the expansion tank 23 flows to the first heat sink. The high-temperature gas of the second power unit is discharged from the hot gas output end, and the high-temperature gas enters the second heat exchanger 22 through the air inlet pipe 26. The second heat exchanger 22 converts the high-temperature gas into low-temperature gas and discharges it through the air outlet pipe 27. The low-temperature gas flows back from the cold air input end to the engine of the second power unit through the air outlet pipe 27.

[0053] The implementation principle of this application is as follows: when the first power unit 1 is working, the second power unit is in backup mode, and the first water valve 6, the second water valve 9, the third water valve 17 and the fourth water valve 20 are opened. The high-temperature liquid in the engine 12 of the first power unit 1 enters the first heat exchanger 21 through the No. 1 shunt pipe 5 and the liquid inlet pipe 3. At the same time, the expanded liquid enters the expansion tank 23 through the expansion outlet pipe 121, the No. 3 shunt pipe 16 and the liquid inlet pipe 14. The first heat exchanger 21 exchanges the high-temperature liquid for low-temperature liquid. The low-temperature liquid enters the generator 13 of the first power unit 1 through the liquid outlet pipe 4 and the No. 2 shunt pipe 8. Through continuous heat exchange between the liquids, the heat is continuously dissipated for the engine 12 of the first power unit 1. When waiting for the temperature to drop, part of the liquid in the expansion tank 23 flows back to the generator 13 of the first power unit 1 through the liquid outlet pipe 15, the No. 4 shunt pipe 19 and the contraction inlet pipe 122, and the other part of the liquid in the expansion tank 23 flows to the first heat sink.

[0054] When the second power unit is operating, the first power unit 1 serves as a backup. The first, second, third, and fourth backup water valves 18 and 25 are opened, and the high-temperature liquid in the engine of the second power unit enters the first heat exchanger 21 through the No. 1 shunt pipe 5 and the liquid inlet pipe 3. Simultaneously, the expanded liquid enters the expansion tank 23 through the No. 3 shunt pipe 16 and the liquid inlet pipe 14. The first heat exchanger 21 converts the high-temperature liquid into low-temperature liquid, which then enters the generator 13 of the second power unit through the liquid outlet pipe 4 and the No. 2 shunt pipe 8. Through continuous heat exchange between the liquids, the heat from the engine of the second power unit is continuously dissipated. While waiting for the temperature to drop, part of the liquid in the expansion tank 23 flows back to the generator 13 of the first power unit 1 through the liquid outlet pipe 15 and the No. 4 shunt pipe 19, while the remaining part of the liquid in the expansion tank 23 flows to the first heat sink. The high-temperature gas of the second power unit is discharged from the hot gas output end, and the high-temperature gas enters the second heat exchanger 22 through the air inlet pipe 26. The second heat exchanger 22 converts the high-temperature gas into low-temperature gas and discharges it through the air outlet pipe 27. The low-temperature gas flows back from the cold air input end to the engine of the second power unit through the air outlet pipe 27.

[0055] In summary, the first power unit 1 and the second power unit that serve as backup for each other can share a heat exchanger 2, and through the first heat exchange component 21 and the second heat exchange component 22, the heat exchanger 2 can be applied to a variety of different types of power units or combinations of different types of power units, thereby improving flexibility, reducing equipment costs, and reducing occupied space.

[0056] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A diesel generator set with a shared heat dissipation mechanism, comprising a first power unit (1) and a second power unit serving as backup for each other, characterized in that: It also includes a heat exchanger (2), wherein the heat exchanger (2) includes a first heat exchange element (21); The first heat exchange element (21) is provided with a liquid inlet pipe (3) and a liquid outlet pipe (4); the liquid inlet pipe (3) is connected to a first shunt pipe (5); the first shunt pipe (5) is respectively connected to a first water valve (6) and a first standby water valve (7); the liquid outlet pipe (4) is connected to a second shunt pipe (8); the second shunt pipe (8) is respectively connected to a second water valve (9) and a second standby water valve (10); the first water valve (6) and the second water valve (9) are respectively connected to the first power unit (1) through a pipeline; the first standby water valve (7) and the second standby water valve (10) are respectively connected to the second power unit through a pipeline.

2. A diesel generator set with a shared heat dissipation mechanism according to claim 1, characterized in that: The first power unit (1) comprises a frame (11), an engine (12) and a generator (13) arranged on the frame (11), wherein the engine (12) and the generator (13) are coaxially connected. The second power unit is consistent with the first power unit (1), but the engine (12) of the first power unit (1) is a liquid-cooled engine, while the engine of the second power unit is a dual-cooling system engine, and the engine of the second power unit combines air intercooling and liquid cooling.

3. A diesel generator set with a shared heat dissipation mechanism according to claim 2, characterized in that: The heat exchanger (2) further comprises a second heat exchange element (22), wherein the first heat exchange element (21) is a liquid-cooled radiator, and the second heat exchange element (22) is an intercooler.

4. A diesel generator set with a shared heat dissipation mechanism according to claim 2, characterized in that: The heat exchanger (2) further comprises an expansion water tank (23), the expansion water tank (23) being in communication with the first heat exchange element (21) via a pipeline, the expansion water tank (23) being provided with a liquid inlet pipe (14) and a liquid outlet pipe (15), the liquid inlet pipe (14) being connected to a third shunt pipe (16), the third shunt pipe (16) being respectively connected to a third water valve (17) and a third backup water valve (18), the liquid outlet pipe (15) being connected to a fourth shunt pipe (19), the fourth shunt pipe (19) being respectively connected to a fourth water valve (20) and a fourth backup water valve (25), the third water valve (17) and the fourth water valve (20) being respectively connected to the engine (12) of the first power unit (1) via a pipeline, the third backup water valve (18) and the fourth backup water valve (25) being respectively connected to the engine of the second power unit via a pipeline.

5. The diesel generator set with a shared heat dissipation mechanism according to claim 3, characterized in that: The engine of the second power unit further comprises a cold air input end for receiving low-temperature gas and a hot air output end for discharging high-temperature gas. The second heat exchanger (22) is provided with an air inlet pipe (26), and the end of the air inlet pipe (26) away from the second heat exchanger (22) is connected to the hot air output end. The second heat exchanger (22) is provided with an air outlet pipe (27), and the end of the air outlet pipe (27) away from the second heat exchanger (22) is connected to the cold air input end.

6. A diesel generator set with a shared heat dissipation mechanism according to claim 4, characterized in that: The first diversion pipe (5), the second diversion pipe (8), the third diversion pipe (16) and the fourth diversion pipe (19) are all three-way pipes.

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