CN211287869U - Cooling system of diesel engine - Google Patents
Cooling system of diesel engine Download PDFInfo
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- CN211287869U CN211287869U CN201922350247.7U CN201922350247U CN211287869U CN 211287869 U CN211287869 U CN 211287869U CN 201922350247 U CN201922350247 U CN 201922350247U CN 211287869 U CN211287869 U CN 211287869U
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- diesel engine
- water pump
- circulating water
- external circulating
- radiator
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Abstract
The utility model provides a diesel engine cooling system, relating to the technical field of diesel engines, comprising a radiator, an external circulating water pump, a cooling fan and a base; the radiator and the external circulating water pump are fixedly arranged on the base, the radiator is arranged along the vertical direction, a pump shaft of the external circulating water pump is in transmission connection with a crankshaft of the diesel engine through a synchronous belt transmission mechanism, a suction inlet of the external circulating water pump is connected with a cooling water outlet pipe of the engine, a discharge outlet of the external circulating water pump is connected with one end pipe of the radiator, and the other end of the radiator is connected with a cooling water return pipe of the engine; the cooling fan is arranged on the outer side of the radiator and is in transmission connection with a crankshaft of the diesel engine, the external circulating water pump is arranged, a pump shaft of the external circulating water pump is in transmission connection with the crankshaft of the diesel engine through a synchronous belt transmission mechanism, circulating flow and cooling heat dissipation of cooling water are enhanced, and heat dissipation capacity of the diesel engine is improved.
Description
Technical Field
The utility model relates to a diesel engine technical field provides a diesel engine cooling system.
Background
During the working process of the engine, the temperature of combustion gas can reach about 2000 ℃, which causes the temperature of a cylinder cover, an air valve, a piston and the like which are in direct contact with high-temperature gas to be increased sharply. In order to ensure the normal work of the generator, cooling is required, and a water cooling method is commonly used. The gasoline engine and the diesel engine have different structural characteristics and different heating conditions. The latter temperature is generated much higher than the former sound during operation. Therefore, the use and maintenance requirements of the cooling system are more strict for the diesel engine than for the gasoline engine. When the diesel engine works at a proper cooling liquid temperature, the operation conditions of the diesel engine, including fuel oil combustion, exhaust emission, the viscosity of lubricating oil, the rigidity and the clearance of parts, the operation state of the diesel engine and the like, are all in a good state. Therefore, the economical efficiency and the dynamic property of the diesel engine can be improved, the noise is reduced, and the service life of the diesel engine can be greatly prolonged. The internal circulating cooling system of original diesel engine radiating efficiency low scheduling problem appears easily when the high load operation, and moreover, the radiating external circulating pump of present diesel engine adopts solitary motor drive more, and the power supply system who disposes the motor is complicated to break down easily in service.
SUMMERY OF THE UTILITY MODEL
To the radiating needs of diesel engine, the utility model provides a diesel engine cooling system to satisfy the radiating needs of diesel engine.
The technical scheme of the utility model is that: a diesel engine cooling system comprises a radiator, an external circulating water pump, a cooling fan and a base; the radiator and the external circulating water pump are fixedly arranged on the base, the radiator is arranged along the vertical direction, a pump shaft of the external circulating water pump is in transmission connection with a crankshaft of the diesel engine through a synchronous belt transmission mechanism, a suction inlet of the external circulating water pump is connected with a cooling water outlet pipe of the diesel engine, a discharge outlet of the external circulating water pump is connected with one end of the radiator through a pipe, and the other end of the radiator is connected with a cooling water return pipe of the diesel engine; the cooling fan is arranged on the outer side of the radiator and is in transmission connection with a crankshaft of the diesel engine.
Furthermore, the synchronous belt transmission mechanism comprises a driving synchronous belt wheel arranged on a crankshaft of the diesel engine, a driven synchronous belt wheel arranged on a pump shaft of the external circulating water pump, and a synchronous belt arranged between the driving synchronous belt wheel and the driven synchronous belt wheel. Preferably, the outer diameter of the driving synchronous pulley is larger than that of the driven synchronous pulley; be provided with the spout on the base, external circulating water pump sets up in the spout, realizes synchronous belt's rate of tension through external circulating water pump position control and adjusts.
Furthermore, in order to keep the smoothness of cooling water circulation, the height of the suction inlet of the external circulating water pump is lower than that of the cooling water outlet of the diesel engine. And a filter screen is arranged at the suction inlet of the external circulating water pump. In order to facilitate the disassembly operation, the cooling water outlet and the cooling water return port of the diesel engine are respectively provided with a switch valve.
The utility model has the advantages that:
an external circulating water pump is arranged, a pump shaft of the external circulating water pump is in transmission connection with a crankshaft of the diesel engine through a synchronous belt transmission mechanism, and the external circulating water pump is connected in series with a water inlet pipe of the radiator. The cooling fan is arranged on the outer side of the radiator and is in transmission connection with a crankshaft of the diesel engine. The external circulating water pump and the cooling fan are driven by the crankshaft of the diesel engine, so that the circulating flow of cooling water and cooling heat dissipation are enhanced, and the heat dissipation capacity of the diesel engine is improved. And the external circulating water pump is connected with the crankshaft through the synchronous belt transmission mechanism, the external circulating water pump is directly driven to work through the crankshaft, a driving motor and a power supply system do not need to be additionally arranged, and the external circulating water pump is simple in structure and stable and reliable in operation.
Drawings
Fig. 1-system schematic diagram of the present invention.
Fig. 2 is a schematic view of a first structure of the present invention.
Fig. 3 is a schematic diagram of a second structure of the present invention.
In the figure, 1-diesel engine, 11-crankshaft, 12-cooling water outlet, 13-cooling water return port, 2-cooling fan, 3-external circulating water pump, 4-radiator, 51-driving synchronous pulley, 52-driven synchronous pulley, 53-synchronous belt, 6-connecting pipe, 7-base.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
As shown in fig. 1, the cooling system of the diesel engine provided by the utility model comprises a radiator 4, an external circulating water pump 3, a cooling fan 2 and a base 7; the radiator 4 and the external circulating water pump 3 are fixedly arranged on the base, the radiator 4 is arranged along the vertical direction, a suction inlet of the external circulating water pump 3 is connected with a cooling water outlet 12 of the diesel engine 1 through a pipe, a discharge outlet of the external circulating water pump is connected with one end of the radiator 4 through a pipe, and the other end of the radiator 4 is connected with a cooling water return port 13 of the diesel engine 1 through a pipe; the height of a suction inlet of the external circulating water pump 3 is lower than that of a cooling water outlet of the diesel engine 1. A filter screen is arranged at the suction inlet of the external circulating water pump 3. Switch valves are respectively arranged at the cooling water outlet 12 and the cooling water return port 13 of the diesel engine 1.
As shown in fig. 2 and 3, a pump shaft of the external circulating water pump 3 is in transmission connection with a crankshaft of the diesel engine 1 through a synchronous belt transmission mechanism, and the cooling fan 2 is arranged on the outer side of the radiator 4 and is in transmission connection with a crankshaft 11 of the diesel engine 1. The synchronous belt transmission mechanism comprises a driving synchronous pulley 51 arranged on a crankshaft 11 of the diesel engine 1, a driven synchronous pulley 52 arranged on a pump shaft of the external circulating water pump 3, and a synchronous belt 53 arranged between the driving synchronous pulley 51 and the driven synchronous pulley 52. The outer diameter of the driving timing pulley 51 is larger than the outer diameter of the driven timing pulley 52. Be provided with the spout on the base 7, external circulating water pump 3 sets up in the spout, realizes synchronous belt 53's rate of tension through external circulating water pump 3 position control and adjusts.
The utility model discloses a theory of operation:
an external circulating water pump 3 is arranged, a pump shaft of the external circulating water pump 3 is in transmission connection with a crankshaft of the diesel engine 1 through a synchronous belt transmission mechanism, and the external circulating water pump 3 is connected in series with a water inlet pipe of a radiator 4. The cooling fan 2 is disposed outside the radiator 2 and is drivingly connected to the crankshaft of the diesel engine 1.
The crankshaft of the diesel engine 1 is driven by a synchronous belt transmission mechanism to drive the external circulating water pump 3 to work, and cooling water at a cooling water outlet 12 of the diesel engine 1 is pumped to the radiator 4 and then flows back from a cooling water return port 13 of the diesel engine 1. Meanwhile, the crankshaft 11 of the diesel engine 1 drives the cooling fan 2 to work, and drives air outside the radiator 4 to flow, so that the effect of three people is achieved.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A cooling system for a diesel engine, characterized in that:
comprises a radiator (4), an external circulating water pump (3), a cooling fan (2) and a base (7);
the radiator (4) and the external circulating water pump (3) are fixedly mounted on the base, the radiator (4) is arranged along the vertical direction, a pump shaft of the external circulating water pump (3) is in transmission connection with a crankshaft of the diesel engine (1) through a synchronous belt transmission mechanism, a suction inlet of the external circulating water pump (3) is in pipe connection with a cooling water outlet (12) of the diesel engine (1), a discharge outlet of the external circulating water pump is in pipe connection with one end of the radiator (4), and the other end of the radiator (4) is in pipe connection with a cooling water return port (13) of the diesel engine (1);
the cooling fan (2) is arranged on the outer side of the radiator (4) and is in transmission connection with a crankshaft (11) of the diesel engine (1).
2. The diesel engine cooling system according to claim 1, characterized in that: the synchronous belt transmission mechanism comprises a driving synchronous belt wheel (51) arranged on a crankshaft (11) of the diesel engine (1), a driven synchronous belt wheel (52) arranged on a pump shaft of the external circulating water pump (3), and a synchronous belt (53) arranged between the driving synchronous belt wheel (51) and the driven synchronous belt wheel (52).
3. The diesel engine cooling system according to claim 2, characterized in that: the outer diameter of the driving synchronous pulley (51) is larger than that of the driven synchronous pulley (52).
4. The diesel engine cooling system according to claim 1, characterized in that: the height of a suction inlet of the external circulating water pump (3) is lower than that of a cooling water outlet of the diesel engine (1).
5. The diesel engine cooling system according to claim 4, characterized in that: the base (7) is provided with a sliding groove, the external circulating water pump (3) is arranged in the sliding groove, and the tension degree of the synchronous belt (53) is adjusted through position adjustment of the external circulating water pump (3).
6. The diesel engine cooling system according to claim 4, characterized in that: a filter screen is arranged at the suction inlet of the external circulating water pump (3).
7. The diesel engine cooling system according to claim 1, characterized in that: and switch valves are respectively arranged at a cooling water outlet (12) and a cooling water return port (13) of the diesel engine (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922350247.7U CN211287869U (en) | 2019-12-24 | 2019-12-24 | Cooling system of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922350247.7U CN211287869U (en) | 2019-12-24 | 2019-12-24 | Cooling system of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211287869U true CN211287869U (en) | 2020-08-18 |
Family
ID=72032630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922350247.7U Active CN211287869U (en) | 2019-12-24 | 2019-12-24 | Cooling system of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211287869U (en) |
-
2019
- 2019-12-24 CN CN201922350247.7U patent/CN211287869U/en active Active
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