Generator cooling system and diesel generator
By introducing multiple circulation loops and exhaust pipes into the diesel generator cooling system, the problem of coolant leakage was solved, and air and high pressure were discharged during the coolant circulation process, ensuring stable engine operation.
Patent Information
- Application Number
- CN202520903194.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-05-09
AI Technical Summary
Existing diesel generator cooling systems cannot effectively expel excess air and high pressure during circulation, causing coolant to leak out through the filler port and resulting in engine shutdown.
A cooling system comprising a first cooler, a second cooler, an engine, a first expansion tank, a second expansion tank, and a thermostat valve is designed. Through three circulation loops and an exhaust pipe, the system ensures that air is expelled and high pressure is released during the circulation process, thus preventing coolant leakage.
It effectively removes air and high pressure from the coolant, prevents coolant leakage, and ensures normal engine operation.
Smart Images
Figure CN223621673U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of generator technology, and more particularly to a generator cooling system and a diesel generator. Background Technology
[0002] A diesel generator is a small power generation device that uses diesel fuel and a diesel engine as the prime mover to drive a generator to produce electricity. Diesel generators are a crucial component of emergency power supply systems in smelting enterprises. Their core function is to quickly start up and supply power to first-level emergency equipment after the mains power is lost, ensuring the safety of important equipment and personnel.
[0003] The existing cooling system of diesel generators includes an aftercooler system and a cylinder liner cooling system. Coolant circulates between the aftercooler system, the cylinder liner cooling system and the engine to cool the engine and ensure its normal operation.
[0004] However, during the circulation process, the coolant cannot expel excess air or release the high pressure in the cooling system, which can easily cause the coolant to leak out through the filler neck, leading to engine shutdown. Utility Model Content
[0005] The main purpose of this application is to provide a generator cooling system and a diesel generator, which aims to solve the technical problem that the coolant cannot expel excess air and release the high pressure in the cooling system during the circulation process, which easily leads to the coolant flowing out through the filler port and causing engine shutdown failure.
[0006] To achieve the above objectives, this application provides a generator cooling system, including a first cooler, a second cooler, an engine, a first expansion tank, a second expansion tank, and a thermostatic valve;
[0007] The thermostat valve and the engine form a first circulation loop, the first cooler, the thermostat valve and the engine form a second circulation loop, and the second cooler and the engine form a third circulation loop;
[0008] The first expansion tank is connected to the first circulation loop through the first exhaust pipe, the first expansion tank is connected to the second circulation loop through the second exhaust pipe, and a third exhaust pipe is provided between the second expansion tank and the engine;
[0009] During the process of circulating and pumping the coolant in the first circulation loop, air is discharged through the first exhaust pipe.
[0010] During the circulation pumping of coolant in the second circulation loop, air is discharged through the second exhaust pipe;
[0011] During the circulation pumping of the coolant in the third circulation loop, air is discharged through the third exhaust pipe.
[0012] Optionally, a first exhaust pipe is provided on the outer surface of the first expansion tank, and the first exhaust pipe serves as the output end of the first exhaust pipeline.
[0013] Optionally, a second exhaust pipe is provided on the outer surface of the first expansion tank, and the second exhaust pipe serves as the output end of the second exhaust pipeline.
[0014] Optionally, the outer surface of the second expansion tank is provided with a third exhaust pipe and a fourth exhaust pipe, which serve as the output ends of the third exhaust pipe.
[0015] Optionally, the generator cooling system further includes a first circulating pump disposed on the first circulating loop and the second circulating loop, the input end of the first circulating pump being connected to the first cooler, and the output end of the first circulating pump being connected to the engine.
[0016] Optionally, the generator cooling system further includes a first switching valve and a second switching valve disposed on the second circulation loop;
[0017] The input end of the first switching valve is connected to the thermostatic valve, and the output end of the first switching valve is connected to the first cooler;
[0018] The input end of the second switching valve is connected to the first cooler, and the output end of the second switching valve is connected to the first circulating pump.
[0019] Optionally, the generator cooling system further includes a second circulation pump disposed on the third circulation loop, the input end of the second circulation pump being connected to the second cooler, and the output end of the second circulation pump being connected to the engine.
[0020] Optionally, the generator cooling system further includes a third switching valve and a fourth switching valve disposed on the third circulation loop;
[0021] The input end of the third switching valve is connected to the engine, and the output end of the third switching valve is connected to the second cooler;
[0022] The input end of the fourth switching valve is connected to the second cooler, and the output end of the fourth switching valve is connected to the engine.
[0023] Optionally, the thermostatic valve opens the first circulation loop when the coolant temperature is below 80°C, and opens the second circulation loop when the coolant temperature is above or equal to 80°C.
[0024] In addition, to achieve the above objectives, this application also provides a diesel generator, which includes the generator cooling system described above.
[0025] Compared with the prior art, the embodiments of this application have the following main advantages:
[0026] This application provides a generator cooling system and a diesel generator. The generator cooling system includes a first cooler, a second cooler, an engine, a first expansion tank, a second expansion tank, and a thermostat valve. A first circulation loop is formed between the thermostat valve and the engine; a second circulation loop is formed between the first cooler, the thermostat valve, and the engine; and a third circulation loop is formed between the second cooler and the engine. The first expansion tank is connected to the first circulation loop via a first exhaust pipe, and to the second circulation loop via a second exhaust pipe. A third exhaust pipe is provided between the second expansion tank and the engine. In the generator cooling system provided by this application, air is discharged through the first exhaust pipe during the circulation pumping of the coolant in the first circulation loop; air is discharged through the second exhaust pipe during the circulation pumping of the coolant in the second circulation loop; and air is discharged through the third exhaust pipe during the circulation pumping of the coolant in the third circulation loop. This ensures that excess air is discharged and high pressure in the cooling system is released through the exhaust pipes and expansion tanks during the coolant circulation process, preventing coolant leakage through the filler port. Attached Figure Description
[0027] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 This is one of the structural schematic diagrams of the generator cooling system provided in the embodiments of this application;
[0029] Figure 2 This is the second schematic diagram of the generator cooling system provided in the embodiments of this application. Attached image description:
[0031] 10. First cooler; 20. Second cooler; 30. Engine; 40. First expansion tank; 50. Second expansion tank; T1. Thermostat valve; P1. First exhaust pipe; P2. Second exhaust pipe; P3. Third exhaust pipe; P4. Fourth exhaust pipe; IS1. First circulation pump; IS2. Second circulation pump; D1. First switching valve; D2. Second switching valve; D3. Third switching valve; D4. Fourth switching valve. Detailed Implementation
[0032] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a particular order.
[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
[0035] like Figure 1 As shown, this application provides a generator cooling system, including a first cooler 10, a second cooler 20, an engine 30, a first expansion tank 40, a second expansion tank 50, and a thermostatic valve T1;
[0036] The thermostat valve T1 and the engine 30 form a first circulation loop, the first cooler 10, the thermostat valve T1 and the engine 30 form a second circulation loop, and the second cooler 20 and the engine 30 form a third circulation loop;
[0037] The first expansion tank 40 is connected to the first circulation loop through the first exhaust pipe, the first expansion tank 40 is connected to the second circulation loop through the second exhaust pipe, and a third exhaust pipe is provided between the second expansion tank 50 and the engine 30.
[0038] The generator cooling system provided in this embodiment includes a first cooler 10, a second cooler 20, an engine 30, a first expansion tank 40, a second expansion tank 50, and a thermostatic valve T1.
[0039] Optionally, the first cooler 10 is a cooler for the cylinder liner cooling system, the second cooler 20 is a cooler for the aftercooling system, the first expansion tank 40 is also called a high-temperature expansion tank, and the second expansion tank 50 is also called a low-temperature expansion tank.
[0040] Specifically, the thermostat valve T1 and the engine 30 form a first circulation loop. In other words, the thermostat valve T1 and the engine 30 cylinder liner cooling pipe form a first circulation loop, that is, the coolant can circulate between the thermostat valve T1 and the engine 30 along the first circulation loop to cool the engine 30 cylinder liner.
[0041] The first cooler 10, the thermostat valve T1 and the engine 30 form a second circulation loop. Specifically, the first cooler 10, the thermostat valve T1 and the engine 30 cylinder liner cooling passage form a second circulation loop, that is, the coolant can circulate along the second circulation loop between the first cooler 10, the thermostat valve T1 and the engine 30 to cool the engine 30 cylinder liner.
[0042] Specifically, a third circulation loop is formed between the second cooler 20 and the engine 30. In other words, a third circulation loop is formed between the second cooler 20 and the oil cooling pipe of the engine 30, so that the coolant can circulate between the second cooler 20 and the engine 30 along the third circulation loop to cool the intake air and oil of the engine 30.
[0043] The generator cooling system provided in this embodiment also includes a first exhaust pipe, a second exhaust pipe and a third exhaust pipe. The first expansion tank 40 is connected to the first circulation loop through the first exhaust pipe, the first expansion tank 40 is connected to the second circulation loop through the second exhaust pipe, and a third exhaust pipe is provided between the second expansion tank 50 and the engine 30.
[0044] Optionally, the thermostatic valve T1 opens the first circulation loop when the coolant temperature is below 80°C, and opens the second circulation loop when the coolant temperature is above or equal to 80°C.
[0045] In this embodiment, when the coolant temperature is below 80°C, the first circulation loop is activated through the thermostat valve T1, and air is discharged through the first exhaust pipe during the coolant circulation pumping process in the first circulation loop. When the coolant temperature is above or equal to 80°C, the second circulation loop is activated through the thermostat valve T1, and air is discharged through the second exhaust pipe during the coolant circulation pumping process in the second circulation loop. Air is discharged through the third exhaust pipe during the coolant circulation pumping process in the third circulation loop.
[0046] The generator cooling system provided in this application discharges air through a first vent pipe during the first circulation pumping process of the coolant; discharges air through a second vent pipe during the second circulation pumping process of the coolant; and discharges air through a third vent pipe during the third circulation pumping process of the coolant. This ensures that excess air is discharged and high pressure in the cooling system is released through the vent pipes and expansion tank during the circulation process, preventing coolant from flowing out through the filler port.
[0047] Optionally, the outer surface of the first expansion tank 40 is provided with a first exhaust pipe P1, and the first exhaust pipe P1 serves as the output end of the first exhaust pipeline.
[0048] Please see Figure 2 ,like Figure 2 As shown, a first exhaust pipe P1 is provided on the outer surface of the first expansion tank 40, and the first exhaust pipe P1 is located on the top of the first expansion tank 40, so as not to cause significant disturbance to the coolant.
[0049] Optionally, a second exhaust pipe P2 is provided on the outer surface of the first expansion tank 40, and the second exhaust pipe P2 serves as the output end of the second exhaust pipeline.
[0050] Please see Figure 2 ,like Figure 2 As shown, a second exhaust pipe P2 is provided on the outer surface of the first expansion tank 40, and the second exhaust pipe P2 is located on the top of the second expansion tank 50, so as not to cause significant disturbance to the coolant.
[0051] Optionally, the outer surface of the second expansion tank 50 is provided with a third exhaust pipe P3 and a fourth exhaust pipe P4, which serve as the output ends of the third exhaust pipe.
[0052] Please see Figure 2 ,like Figure 2 As shown, the outer surface of the second expansion tank 50 is provided with a third exhaust pipe P3 and a fourth exhaust pipe P4, and the third exhaust pipe P3 and the fourth exhaust pipe P4 are located on the top of the second expansion tank 50.
[0053] Optionally, the generator cooling system further includes a first circulation pump IS1 disposed on the first circulation loop and the second circulation loop, the input end of the first circulation pump IS1 being connected to the first cooler 10, and the output end of the first circulation pump IS1 being connected to the engine 30.
[0054] Optionally, the generator cooling system further includes a first switching valve D1 and a second switching valve D2 disposed on the second circulation loop;
[0055] The input end of the first switching valve D1 is connected to the thermostatic valve T1, and the output end of the first switching valve D1 is connected to the first cooler 10.
[0056] The input end of the second switching valve D2 is connected to the first cooler 10, and the output end of the second switching valve D2 is connected to the first circulating pump IS1.
[0057] like Figure 2 As shown, the generator cooling system also includes a first circulating pump IS1, a first switching valve D1, and a second switching valve D2. The first circulating pump IS1 is installed in the first circulating loop and the second circulating loop, and the first switching valve D1 and the second switching valve D2 are both installed in the second circulating loop.
[0058] The specific implementation method of the generator cooling system for cooling the engine cylinder liner 30 provided in this application embodiment is as follows:
[0059] When the generator cooling system is operating, the first switching valve D1 and the second switching valve D2 are in the open state. The engine 30 starts running, simultaneously driving the first circulation pump IS1. Coolant is pumped by the first circulation pump IS1 through the engine 30 to the thermostat T1. When the engine is first started, the cylinder liner temperature is low. If the coolant temperature does not exceed 80°C after heat exchange, the first circulation loop is opened through the thermostat T1, and the coolant is directly returned to the inlet of the first circulation pump IS1 to enter the next cycle. Residual pressure and air in the generator cooling system are discharged through the first exhaust pipe to the first exhaust pipe P1 located on the outer surface of the first expansion tank 40.
[0060] As the engine 30 operates, the cylinder liner temperature rises, and the coolant temperature rises further after heat exchange. If the coolant temperature exceeds 80°C after heat exchange, the second circulation loop is opened through the thermostat valve T1, while the first circulation loop is closed by the thermostat valve T1. The coolant is then delivered to the first cooler 10 through the first switching valve D1, and after cooling, it flows back to the inlet of the first circulation pump IS1 through the second switching valve D2 to enter the next cycle. The residual pressure and air in the generator cooling system are discharged through the second exhaust pipe to the second exhaust pipe P2 located on the outer surface of the first expansion tank 40.
[0061] In this embodiment, excess air and pressure during the cooling process of the engine cylinder liner are released through the first exhaust pipe P1 and the second exhaust pipe P2, thus preventing coolant leakage.
[0062] Optionally, the generator cooling system further includes a second circulation pump IS2 disposed on the third circulation loop, the input end of the second circulation pump IS2 being connected to the second cooler 20, and the output end of the second circulation pump IS2 being connected to the engine 30.
[0063] Optionally, the generator cooling system further includes a third switching valve D3 and a fourth switching valve D4 disposed on the third circulation loop;
[0064] The input end of the third switching valve D3 is connected to the engine 30, and the output end of the third switching valve D3 is connected to the second cooler 20;
[0065] The input end of the fourth switching valve D4 is connected to the second cooler 20, and the output end of the fourth switching valve D4 is connected to the engine 30.
[0066] like Figure 2 As shown, the generator cooling system also includes a second circulation pump IS2, a third switching valve D3, and a fourth switching valve D4. The second circulation pump IS2 is installed in the third circulation loop, and both the third switching valve D3 and the fourth switching valve D4 are installed in the third circulation loop.
[0067] The specific implementation method of the generator cooling system for cooling the intake air and engine oil of engine 30 provided in this application embodiment is as follows:
[0068] When the generator cooling system is operating, the third switch valve D3 and the fourth switch valve D4 are in the open state. The engine 30 starts running, simultaneously driving the second circulation pump IS2. The coolant in the engine 30, after heat exchange, is transported by the second circulation pump IS2 to the third switch valve D3 and then enters the second cooler 20. The coolant in the second cooler 20 returns to the inlet of the second circulation pump IS2 through the fourth switch valve D4 to begin the next cycle. Residual pressure and air in the generator cooling system are discharged through the third exhaust pipe to the third exhaust pipe P3 and the fourth exhaust pipe P4 located on the outer surface of the second expansion tank 50.
[0069] In this embodiment, the third exhaust pipe P3 and the fourth exhaust pipe P4 are located at the top of the second expansion tank 50, which will not cause significant disturbance to the coolant. Excess air and pressure during the cooling process are released through the third exhaust pipe P3 and the fourth exhaust pipe P4 to prevent coolant from flowing out.
[0070] Furthermore, this application also provides a diesel generator, which includes the generator cooling system described above. Optionally, the aforementioned diesel generator may be a Caterpillar 2250F diesel generator.
[0071] It should be noted that, since the diesel generator provided in this application includes the generator cooling system described above, the diesel generator provided in this application also possesses all the technical effects of the aforementioned generator cooling system.
[0072] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.
Claims
1. A generator cooling system, characterized in that, It includes a first cooler, a second cooler, an engine, a first expansion tank, a second expansion tank, and a thermostatic valve; The thermostat valve and the engine form a first circulation loop, the first cooler, the thermostat valve and the engine form a second circulation loop, and the second cooler and the engine form a third circulation loop; The first expansion tank is connected to the first circulation loop through the first exhaust pipe, the first expansion tank is connected to the second circulation loop through the second exhaust pipe, and a third exhaust pipe is provided between the second expansion tank and the engine; During the process of circulating and pumping the coolant in the first circulation loop, air is discharged through the first exhaust pipe. During the circulation pumping of coolant in the second circulation loop, air is discharged through the second exhaust pipe; During the circulation pumping of the coolant in the third circulation loop, air is discharged through the third exhaust pipe.
2. The generator cooling system according to claim 1, characterized in that, The first expansion tank is provided with a first exhaust pipe on its outer surface, and the first exhaust pipe serves as the output end of the first exhaust pipeline.
3. The generator cooling system according to claim 1, characterized in that, The outer surface of the first expansion tank is provided with a second exhaust pipe, and the second exhaust pipe serves as the output end of the second exhaust pipeline.
4. The generator cooling system according to claim 1, characterized in that, The outer surface of the second expansion tank is provided with a third exhaust pipe and a fourth exhaust pipe, which serve as the output ends of the third exhaust pipe.
5. The generator cooling system according to claim 1, characterized in that, The generator cooling system further includes a first circulation pump disposed on the first circulation loop and the second circulation loop, the input end of the first circulation pump being connected to the first cooler, and the output end of the first circulation pump being connected to the engine.
6. The generator cooling system according to claim 5, characterized in that, The generator cooling system also includes a first switching valve and a second switching valve installed on the second circulation loop; The input end of the first switching valve is connected to the thermostatic valve, and the output end of the first switching valve is connected to the first cooler; The input end of the second switching valve is connected to the first cooler, and the output end of the second switching valve is connected to the first circulating pump.
7. The generator cooling system according to claim 1, characterized in that, The generator cooling system also includes a second circulation pump installed on the third circulation loop. The input end of the second circulation pump is connected to the second cooler, and the output end of the second circulation pump is connected to the engine.
8. The generator cooling system according to claim 7, characterized in that, The generator cooling system also includes a third switching valve and a fourth switching valve installed on the third circulation loop; The input end of the third switching valve is connected to the engine, and the output end of the third switching valve is connected to the second cooler; The input end of the fourth switching valve is connected to the second cooler, and the output end of the fourth switching valve is connected to the engine.
9. The generator cooling system according to any one of claims 1-8, characterized in that, The thermostatic valve opens the first circulation loop when the coolant temperature is below 80°C, and opens the second circulation loop when the coolant temperature is above or equal to 80°C.
10. A diesel generator, characterized in that, The diesel generator includes a generator cooling system as described in any one of claims 1-9.