Cooling system of diesel engine

Abstract

The utility model discloses a cooling system of a diesel engine, which comprises an intercooler, the intercooler is provided with an air heating pipeline and a water cooling pipeline which exchange heat with each other, the input end of the water cooling pipeline is used for pumping water from the outside, and compressed air before entering the engine is cooled through the air heating pipeline and then discharged from the output end; the plate heat exchanger is provided with a first pipeline and a second pipeline, and the first pipeline is used for receiving water discharged from the output end of the water cooling pipeline, exchanging heat with cooling liquid of the engine in the second pipeline, cooling the cooling liquid and then sending the cooling liquid back to the engine. And the heat exchange efficiency is high, and the occupied area is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling systems, in particular to a cooling system for a diesel engine. Background Art

[0002] Conventional radiators consist of an air-cooled radiator body and a fan drive system. The fan blows and draws air, cooling the medium (water or pressurized air) inside the radiator. Current cooling methods require a large space and complex structure, making installation cumbersome and time-consuming. Furthermore, their low heat dissipation efficiency is a major pain point in the industry.

[0003] Therefore, a cooling system for a diesel engine is still needed to solve the above problems. Utility Model Content

[0004] The utility model provides a cooling system for a diesel engine which solves the above problems.

[0005] The purpose of this utility model is achieved by the following technical solutions:

[0006] A cooling system for a diesel engine, comprising:

[0007] An intercooler, wherein the intercooler has an air heating pipe and a water cooling pipe for heat exchange with each other. The input end of the water cooling pipe is used to pump water from the outside, and the compressed air before entering the engine is cooled through the air heating pipe and discharged from the output end;

[0008] A plate heat exchanger having a first pipeline and a second pipeline. The first pipeline is used to receive water discharged from the output end of the water-cooling pipeline and exchange heat with the engine coolant in the second pipeline, and then return the coolant to the engine after cooling.

[0009] In one embodiment, a support frame is further included, wherein the support frame has a base and a connecting frame connected to the base, the plate heat exchanger is connected to the base, and the intercooler is connected to the support frame.

[0010] In one embodiment, there are two intercoolers, the input ends of the two intercoolers are connected through a tee pipe, and the output ends are located on both sides of the two intercoolers respectively.

[0011] In one embodiment, the input end of the intercooler is connected to a third connecting pipe, the output end of the intercooler is connected to a fourth connecting pipe, and both the third connecting pipe and the fourth connecting pipe are three-way pipes.

[0012] In one embodiment, a compression pump is further included, and the compression pump is connected to the first pipeline through a pipeline, and is used to pump the coolant into the plate heat exchanger.

[0013] In one embodiment, the air heating pipeline of the intercooler is connected to the turbine of the engine, and the hot air after turbocharging is pumped into the heating pipeline.

[0014] Compared with the prior art, the beneficial effects of the present invention include at least:

[0015] The diesel engine's cooling system is designed with an intercooler that features heat-exchanging air-heating and water-cooling pipes. Seawater is introduced into the intercooler, cooling the compressed hot air in the air-heating pipes. The resulting cooled high-pressure gas is pumped into the engine to provide oxygen. The initially cooled seawater is then pumped into a plate heat exchanger, where it exchanges heat with the engine coolant, lowering its temperature. This achieves high heat exchange efficiency while reducing floor space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the embodiment of the utility model Figure 1 ;

[0017] Figure 2 It is a side view of an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of the embodiment of the utility model Figure 2 .

[0019] In the figure: 1. Intercooler; 11. Air heating pipeline; 12. Water cooling pipeline; 2. Plate heat exchanger; 21. First pipeline; 22. Second pipeline; 3. Support frame; 31. Connecting frame; 4. Third connecting pipe; 5. Fourth connecting pipe; 6. Compression pump. DETAILED DESCRIPTION

[0020] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make this disclosure more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. Identical reference numerals in the figures denote identical or similar structures, and thus repeated descriptions thereof will be omitted.

[0021] The words expressing positions and directions described in this utility model are all explained with reference to the accompanying drawings as examples, but they can be changed as needed, and all such changes are included in the protection scope of this utility model.

[0022] Reference Figure 1-3A cooling system for a diesel engine includes: an intercooler 1 and a plate heat exchanger 2.

[0023] The intercooler 1 includes an air heating pipe 11 and a water cooling pipe 12 for heat exchange. Water is pumped into the input end of the water cooling pipe 12. This water cools the compressed air before entering the engine through the air heating pipe 11 and then discharges it from the output end. The exchange of air and water temperatures between the air heating pipe 11 and the water cooling pipe 12 within the intercooler 1 improves heat exchange efficiency during operation. This simplifies the overall air cooling structure, eliminates the need for a fan, and reduces installation steps.

[0024] The plate heat exchanger 2 comprises a first pipe 21 and a second pipe 22. The first pipe 21 receives water discharged from the output end of the water-cooling pipe 12 and exchanges heat with the engine coolant in the second pipe 22, cooling the coolant before returning it to the engine. The first pipe 21 and the second pipe 22 are spaced apart flow paths within the plate heat exchanger 2. During operation, seawater is transported through the first pipe 21 into the plate heat exchanger 2, where it exchanges heat with the coolant in the second pipe 22. Using seawater to enter the cooling system not only reduces cooling speed but also simplifies the structure of the intercooler 1 and plate heat exchanger 2, minimizing space and improving assembly efficiency. Furthermore, heat exchange efficiency is significantly improved.

[0025] In one embodiment, a support frame 3 is further included. The support frame 3 has a base and a connecting frame 31 connected to the base. The plate heat exchanger 2 is connected to the base, and the intercooler 1 is connected to the support frame 3. The support frame 3 can be a metal structure. During installation, the metal structure support frame 3 can stably support the main body.

[0026] In one embodiment, there are two intercoolers 1, the input ends of the two intercoolers 1 being connected via a tee, with the output ends being located on either side of the two intercoolers 1. The intercoolers 1 are arranged in parallel, and seawater can be fed through a single tee pipe, where it is then divided into two branches and fed into the intercoolers 1. Heat is then exchanged with compressed high-pressure air within the intercoolers 1, achieving high heat exchange efficiency and ensuring efficient heat exchange.

[0027] In one embodiment, the input end of the intercooler 1 is connected to a third connecting pipe, and the output end of the intercooler 1 is connected to a fourth connecting pipe. Both the third and fourth connecting pipes are tee pipes. Both the input and output pipes are tee pipes, which provide high heat transfer efficiency both when inputting seawater and after outputting seawater from the intercooler 1.

[0028] In one embodiment, a compression pump 6 is further included, connected to the first pipeline 21 via a pipeline, and is used to pump the coolant into the plate heat exchanger 2. The compression pump 6 can increase the pressure of the coolant by boosting the pressure, so that the coolant can circulate between the plate heat exchanger 2 and the coolant pipeline of the engine. After the heat exchange, the seawater with a slightly increased temperature continues to cool, and the seawater pumped in once can be reused multiple times, thereby improving the heat exchange efficiency of the seawater.

[0029] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limiting the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the utility model without departing from the principles and purpose of the utility model. All of these changes should fall within the scope of protection of the claims of the present invention.

Claims

1. A cooling system for a diesel engine, characterized in that: include: An intercooler, wherein the intercooler has an air heating pipe and a water cooling pipe for heat exchange with each other. The input end of the water cooling pipe is used to pump water from the outside, and the compressed air before entering the engine is cooled through the air heating pipe and discharged from the output end; A plate heat exchanger having a first pipeline and a second pipeline. The first pipeline is used to receive water discharged from the output end of the water-cooling pipeline and exchange heat with the engine coolant in the second pipeline, and then return the coolant to the engine after cooling.

2. The cooling system according to claim 1, characterized in that It also includes a support frame, which has a base and a connecting frame connected to the base. The plate heat exchanger is connected to the base, and the intercooler is connected to the support frame.

3. The cooling system according to claim 2, characterized in that There are two intercoolers, the input ends of the two intercoolers are connected through a three-way pipe, and the output ends are respectively located on both sides of the two intercoolers.

4. The cooling system according to claim 1, wherein: The seawater input end of the intercooler is connected to a third connecting pipe, and the output end is connected to a fourth connecting pipe. Both the third connecting pipe and the fourth connecting pipe are three-way pipes.

5. The cooling system according to claim 1, wherein: It also includes a compression pump, which is connected to the first pipeline through a pipeline and is used to pump the coolant into the plate heat exchanger.

6. The cooling system according to claim 1, wherein: The air heating pipeline of the intercooler is connected to the turbine of the engine, and the hot air after turbocharging is pumped into the heating pipeline.

Images