Diesel engine cooling system and diesel engine set

Abstract

The diesel engine cooling system comprises a base and a transverse cooling pipe, the transverse cooling pipe is fixed between two horizontal supporting plates, the transverse cooling pipe comprises a cooling air cavity and a cooling water cavity which are arranged in the axial direction of the transverse cooling pipe, one end of the cooling air cavity is connected with an air inlet pipe, and a fan is installed on one side of the air inlet pipe; the fan is installed on the top side of any longitudinal supporting frame, air outlet pipes are arranged on the side wall of the cooling air cavity at equal intervals and face the diesel engine, the two ends of the cooling water cavity communicate with a diesel engine cooling system through a water outlet pipe and a water inlet pipe correspondingly, and a water pump is installed on the water outlet pipe. Cooling liquid in the cooling water cavity is guided into a cooling circulation system in the diesel engine through the water inlet pipe to conduct water cooling on the diesel engine, on the other hand, the draught fan is started, then air cooling is conducted on the surface of the diesel engine through the cooling air cavity, and the space utilization rate of the diesel engine can be increased through the structure that the base and the cooling system are combined.

Description

Technical Field

[0001] The invention relates to the technical field of cooling systems, and in particular to a diesel engine cooling system and a diesel engine set. Background Art

[0002] The advantages of diesel engines are large torque and good economic performance; the working process of diesel engines has many similarities with gasoline engines, and each working cycle also goes through four strokes: intake, compression, power, and exhaust. However, since the fuel used in diesel engines is diesel, its viscosity is greater than that of gasoline and it is not easy to evaporate, but its auto-ignition temperature is lower than that of gasoline. Therefore, the formation and ignition method of the combustible mixture are different from those of gasoline engines. The main difference is that the mixture in the cylinder of a diesel engine is compression ignited rather than ignited. When a diesel engine is working, air enters the cylinder. When the air in the cylinder is compressed to the end, the temperature can reach 500-700℃ and the pressure can reach 40-50 atmospheres. When the piston approaches the top dead center, the injector of the fuel supply system sprays fuel into the cylinder combustion chamber at extremely high pressure in a very short time. The diesel forms fine oil particles and mixes with high-pressure and high-temperature air. The combustible mixture burns on its own, expands violently to generate explosive force, and pushes the piston downward to do work. At this time, the temperature can reach 1900-2000℃, and the pressure can reach 60-100 atmospheres. The torque generated is very large, so diesel engines are widely used in large diesel equipment.

[0003] The existing diesel engine cylinder liner is also equipped with a water cooling structure. The cooling water pipe is distributed in a winding manner. Although it can take away the heat generated by the diesel engine cylinder, the heat dissipation area of ​​the cooling water pipe is limited during the flow of the coolant in the cooling water pipe. Under long-term operation, the heat cannot be completely dissipated, and thus gradually accumulates, causing some of the warm coolant to pass through the diesel cylinder again, greatly reducing the heat dissipation effect. Summary of the invention

[0004] In view of the above problems, the present invention provides a diesel engine cooling system.

[0005] A diesel engine cooling system comprises a base, wherein the base comprises two parallel transverse support frames and two longitudinal support frames, the two transverse support frames and the longitudinal support frames are arranged in a rectangular shape, and any transverse support frame comprises two horizontal support plates arranged in parallel up and down; a transverse cooling pipe is fixed between the two horizontal support plates, a cooling air cavity and a cooling water cavity are provided in the transverse cooling pipe, the cooling air cavity and the cooling water cavity are arranged axially along the transverse cooling pipe, one end of the cooling air cavity is connected to an air inlet pipe, a fan is installed on one side of the air inlet pipe, air outlet pipes are arranged on the side walls of the cooling air cavity at equal intervals, the air outlet pipes are arranged toward the diesel engine, and two ends of the cooling water cavity are connected to the water cooling connecting pipe of the diesel engine through the water outlet pipe and the water inlet pipe, respectively, and a water pump is installed on the water outlet pipe.

[0006] In a preferred embodiment, the transverse cooling pipe includes a plurality of necked sections arranged at equal intervals, the total length of the necked sections is greater than 1 / 2 of the length of the transverse cooling pipe, and the air outlet pipe is installed on one side of the necked section.

[0007] In a preferred embodiment, a partition plate is arranged along the axial direction of the transverse cooling tube in the transverse cooling tube, and the transverse cooling tube also includes a first heat-conducting partition and a second heat-conducting partition. The first heat-conducting partition and the second heat-conducting partition divide the cooling water cavity to form a water channel with an S-shaped cross-section. The first heat-conducting partition is completely arranged in the cooling water cavity, one end of the second heat-conducting partition is arranged in the cooling water cavity, and the other cavity passes through the cooling air cavity, and a first ventilation hole is arranged on the second heat-conducting partition.

[0008] In a preferred embodiment, a through groove is provided on the partition plate, and a butterfly valve is sealed and installed in the through groove.

[0009] In a preferred embodiment, the diesel engine cooling system includes an inner tube, which is arranged in a transverse cooling tube. The inner tube is a cooling water cavity. The inner tube and the transverse cooling tube are provided with a cooling air cavity. The inner side of the cooling water cavity is separated by an insulation board to form a first cooling air cavity and a second cooling air cavity. The inner tube is arranged in the first cooling air cavity. The air inlet duct connects the first cooling air cavity and the second cooling air cavity respectively. An exhaust duct is opened on the side of the first cooling air cavity away from the air inlet duct, and the second cooling air cavity is connected to a plurality of air outlet ducts.

[0010] In a preferred embodiment, the transverse cooling pipe includes a third heat-conducting baffle and a fourth heat-conducting baffle, which divide the cooling water cavity into a water channel with an S-shaped cross-section. The third heat-conducting baffle is completely arranged in the cooling water cavity, one end of the fourth heat-conducting baffle is arranged in the cooling water cavity, and the other cavity passes through the cooling air cavity, and a second ventilation hole is arranged on the fourth heat-conducting baffle.

[0011] In a preferred embodiment, the diesel engine cooling system further comprises a longitudinal cooling pipe, which is arranged perpendicularly to the transverse cooling pipe and communicates with the cooling air cavity, and an exhaust hole is opened on the top side of the longitudinal cooling pipe.

[0012] In a preferred embodiment, the transverse cooling pipe is fixedly connected to the horizontal support plate via a vertical support plate.

[0013] A diesel engine set comprises a diesel engine cooling system.

[0014] 1. The diesel engine cooling system of the present application, on the one hand, cools the diesel engine by guiding the coolant in the cooling water cavity in the diesel engine base through the water inlet pipe into the diesel engine internal cooling circulation system, and on the other hand, starts the fan and then uses air cooling on the diesel engine surface through the cooling air cavity. The dual cooling method can effectively cool down the diesel engine unit and improve the reliability of the device operation.

[0015] 2. In the diesel engine cooling system of the present application, the coolant is stored in the cooling water cavity inside the diesel engine base, so that compared with the existing cooling system, the cooling system can run a larger capacity of coolant. The time taken for the coolant to circulate completely once is the time that the coolant in the existing cooling system has circulated multiple times. Compared with the existing cooling system, the coolant obtains less heat per unit time, and the heat accumulated in the coolant is dissipated before the diesel engine is heated again, so the cooling efficiency is higher.

[0016] 3. The diesel engine cooling system of the present application improves the cooling efficiency and the space utilization of the diesel engine without increasing the volume of the diesel engine unit through the structure of combining the diesel engine base with the cooling system.

[0017] 4. If diesel leakage occurs in the cooling system of the diesel engine of this application, or if static electricity ignites and burns, open the butterfly valve, cut off and close the cooling air cavity and cooling water cavity on one side, and introduce fire-fighting water through the water inlet end on the water pump side. The fire-fighting water will be quickly sprayed onto the surface of the diesel engine through the air outlet pipe, suppressing the burning of the flame and extinguishing the flame in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other characteristics, features and advantages of the present invention will become clear by reading the following description of exemplary embodiments with reference to the accompanying drawings. The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments of the present invention and are used together with the description to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained from these drawings without paying creative work.

[0019] Figure 1 A top view of a diesel engine cooling system according to the present invention;

[0020] Figure 2 A cross-sectional view of a diesel engine cooling system embodiment 1 of the present invention;

[0021] Figure 3 A cross-sectional view of the diesel engine cooling system of the present invention at position AA;

[0022] Figure 4 A cross-sectional view of the diesel engine cooling system of the present invention at position BB;

[0023] Figure 5 A magnified view of position C of the diesel engine cooling system of the present invention;

[0024] Figure 6 A cross-sectional view of a diesel engine cooling system embodiment 5 of the present invention;

[0025] Figure 7A cross-sectional view of the first connection portion A'-A' of the diesel engine cooling system of the present invention;

[0026] Figure 8 A magnified view of the C' position of the diesel engine cooling system of the present invention;

[0027] Fig. 9 The diesel engine cooling system of the present invention is used in a state diagram;

[0028] In the figure: 10, base; 11, horizontal support frame; 12, longitudinal support frame; 111, horizontal support plate; 20, horizontal cooling pipe; 21, cooling air cavity; 22, cooling water cavity; 23, air inlet pipe; 24, fan; 25, air outlet pipe; 221, water outlet pipe; 222, water inlet pipe; 223, water pump; 26, necking section; 30, partition plate; 31, first heat-conducting partition plate; 32, second heat-conducting partition plate; 321, first ventilation hole; 33, through groove; 34, butterfly valve; 40, inner pipe; 41, insulation board; 211, first cooling air cavity; 212, second cooling air cavity; 42, exhaust pipe; 43, third heat-conducting partition plate; 44, fourth heat-conducting partition plate; 45, second ventilation hole; 50, longitudinal cooling pipe; 51, exhaust hole; 112, vertical support plate. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0030] The diesel engine cooling system is described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] Example 1

[0032] A diesel engine cooling system comprises a base 10, wherein the base 10 comprises two parallel transverse support frames 11 and two longitudinal support frames 12, wherein the two transverse support frames 11 and the longitudinal support frames 12 are arranged in a rectangular shape, and any transverse support frame 11 comprises two horizontal support plates 111 arranged in parallel with each other; a transverse cooling pipe 20, wherein the transverse cooling pipe 20 is fixed between the two horizontal support plates 111, wherein a cooling air cavity 21 and a cooling water cavity 22 are arranged in the transverse cooling pipe 20, wherein the cooling air cavity 21 and the cooling water cavity 22 are arranged axially along the transverse cooling pipe 20, wherein an air inlet pipe 23 is connected to one end of the cooling air cavity 21, wherein a fan 24 is installed on one side of the air inlet pipe 23, and air outlet pipes 25 are arranged at equal intervals on the side walls of the cooling air cavity 21, wherein the air outlet pipes 25 are arranged toward the diesel engine, and wherein two ends of the cooling water cavity 22 are respectively connected to a water cooling pipe of the diesel engine through an outlet pipe 221 and an inlet pipe 222, and a water pump 223 is installed on the outlet pipe 221.

[0033] When working, the water pump 223 is started, and the coolant in the cooling water chamber 22 is guided into the internal cooling circulation system of the diesel engine through the water inlet pipe 222 to water-cool the diesel engine. On the other hand, the fan 24 is started, and then the surface of the diesel engine is air-cooled through the cooling air chamber 21. The structure of the system combined with the base 10 and the cooling system can improve the space utilization rate of the diesel engine. At the same time, the cooling water chamber 22 of the system can accommodate more coolant. Compared with the traditional water cooling method, the time required for the coolant to circulate once is seven or eight times the cooling time in the existing cooling circulation system, and the cooling efficiency is higher, avoiding the problem that the coolant in the existing cooling system is heated when working for a long time, and the cooling efficiency is reduced.

[0034] The transverse cooling pipe 20 is fixedly connected to the horizontal support plate 111 via the vertical support plate 112 .

[0035] Example 2

[0036] Example 2 is an improvement on Example 1, and the improvement includes that the transverse cooling pipe 20 includes multiple necked sections 26 arranged at equal intervals, the total length of the necked sections 26 is greater than 1 / 2 of the length of the transverse cooling pipe 20, and the air outlet pipe 25 is installed on one side of the necked section 26.

[0037] In this embodiment, by providing a necking section 26 and installing the air outlet pipe 25 on one side of the necking section 26, the wind speed of the air outlet pipe 25 can be increased, thereby increasing the cooling air flow speed on the surface of the diesel engine and improving the cooling efficiency of the device.

[0038] Example 3

[0039] Embodiment 3 is an improvement on Embodiment 1, and the improvement includes a partition plate 30 arranged axially along the transverse cooling tube 20 in the transverse cooling tube 20, and the transverse cooling tube 20 also includes a first heat-conducting partition plate 31 and a second heat-conducting partition plate 32. The first heat-conducting partition plate 31 and the second heat-conducting partition plate 32 divide the cooling water cavity 22 to form a water channel with an S-shaped cross-section. The first heat-conducting partition plate 31 is completely arranged in the cooling water cavity 22, and one end of the second heat-conducting partition plate 32 is arranged in the cooling water cavity 22, and the other cavity passes through the cooling air cavity 21, and a first ventilation hole 321 is arranged in the second heat-conducting partition plate 32.

[0040] When working, the coolant flows through the S-shaped water channel, which can improve the water cooling efficiency of the system. At the same time, one end of the second heat-conducting baffle 32 is arranged in the cooling water cavity 22, and the other cavity passes through the cooling air cavity 21, so that the second heat-conducting baffle 32 can absorb the heat of the cooling water cavity 22 and dissipate heat through the cooling air cavity 21.

[0041] Example 4

[0042] Embodiment 4 is an improvement on Embodiment 1, and the improvement includes that a through groove 33 is provided on the partition plate 30 , and a butterfly valve 34 is sealed and installed in the through groove 33 .

[0043] During operation, if diesel leakage occurs or static electricity ignites, the butterfly valve 34 is opened to cut off and close the cooling air chamber 21 and the cooling water chamber 22 on one side, and fire-fighting water is introduced through the water inlet end of the water pump 223. The fire-fighting water will be quickly sprayed onto the surface of the diesel engine through the air outlet pipe 25 to suppress the burning of the flame and extinguish the flame in time.

[0044] Example 5

[0045] Embodiment 5 is an improvement on embodiment 1, and the improvement includes that the diesel engine cooling system includes an inner tube 40, and the inner tube 40 is arranged in the transverse cooling tube 20. The inner tube 40 is a cooling water chamber 22. The inner tube 40 and the transverse cooling tube 20 are between a cooling air chamber 21. The inner side of the cooling water chamber 22 is separated by a heat insulation plate 41 to form a first cooling air chamber 211 and a second cooling air chamber 212. The inner tube 40 is arranged in the first cooling air chamber 211, and the air inlet pipe 23 is connected to the first cooling air chamber 211 and the second cooling air chamber 212 respectively. An exhaust pipe 42 is opened on the side of the first cooling air chamber 211 away from the air inlet pipe 23, and the second cooling air chamber 212 is connected to multiple air outlet pipes 25.

[0046] When working, the heat insulation plate 41 separates the first cooling air cavity 211 from the second cooling air cavity 212, and the cooling water cavity 22 is arranged on the inner side of the first cooling air cavity 211. At this time, the fan 24 is started, and the fan 24 cools down the outer side of the inner tube 40, and then discharges the heat through the exhaust pipe 42. In this way, the cooling efficiency of the device can be effectively improved, and at the same time, the air cooling system can be prevented from blowing hot air to the diesel engine.

[0047] Example 6

[0048] Embodiment 6 is an improvement on Embodiment 1, and the improvement includes a third heat-conducting baffle 43 and a fourth heat-conducting baffle 44 in the transverse cooling tube 20, the third heat-conducting baffle 43 and the fourth heat-conducting baffle 44 divide the cooling water cavity 22 to form a water channel with an S-shaped cross-section, the third heat-conducting baffle 43 is completely arranged in the cooling water cavity 22, one end of the fourth heat-conducting baffle 44 is arranged in the cooling water cavity 22, and the other cavity passes through the cooling air cavity 21, and a second ventilation hole 45 is arranged on the fourth heat-conducting baffle 44.

[0049] When working, the coolant flows through the S-shaped water channel, which can improve the water cooling efficiency of the system. At the same time, one end of the fourth heat-conducting baffle 44 is arranged in the cooling water cavity 22, and the other cavity passes through the cooling air cavity 21, so that the fourth heat-conducting baffle 44 can absorb the heat of the cooling water cavity 22 and dissipate the heat through the cooling air cavity 21.

[0050] Example 7

[0051] Embodiment 7 is an improvement on Embodiment 1, and the improvement includes that the diesel engine cooling system further includes a longitudinal cooling pipe 50, which is vertically arranged with the transverse cooling pipe 20 and is connected with the cooling air cavity 21, and an exhaust hole 51 is opened on the top side of the longitudinal cooling pipe 50.

[0052] By providing the longitudinal cooling pipe 50, a cooling airflow can also be generated on the bottom side of the diesel engine.

[0053] A diesel engine set comprises a diesel engine cooling system.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "includes..." do not exclude the existence of other identical elements in the article or device including the elements.

[0055] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit the present invention. The present invention is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A diesel engine cooling system, characterized in that: include: A base (10), the base (10) comprising two transverse support frames (11) and two longitudinal support frames (12) arranged in parallel, the two transverse support frames (11) and the longitudinal support frames (12) being arranged in a rectangular shape, and any of the transverse support frames (11) comprising two horizontal support plates (111) arranged in parallel up and down; A transverse cooling pipe (20) is fixed between the two horizontal support plates (111), and a cooling air cavity (21) and a cooling water cavity (22) are provided in the transverse cooling pipe (20). The cooling air cavity (21) and the cooling water cavity (22) are arranged axially along the transverse cooling pipe (20), one end of the cooling air cavity (21) is connected to an air inlet pipe (23), a fan (24) is installed on one side of the air inlet pipe (23), and air outlet pipes (25) are arranged at equal intervals on the side wall of the cooling air cavity (21), the air outlet pipes (25) are arranged toward the diesel engine, and the two ends of the cooling water cavity (22) are respectively connected to the diesel engine water cooling pipe through a water outlet pipe (221) and a water inlet pipe (222), and a water pump (223) is installed on the water outlet pipe (221).

2. The diesel engine cooling system according to claim 1, characterized in that: The transverse cooling pipe (20) comprises a plurality of necked sections (26) arranged at equal intervals, the total length of the necked sections (26) being greater than 1 / 2 of the length of the transverse cooling pipe (20), and the air outlet pipe (25) being installed on one side of the necked section (26).

3. The diesel engine cooling system according to claim 2, characterized in that: The transverse cooling tube (20) is provided with a partition plate (30) arranged axially along the transverse cooling tube (20), and the transverse cooling tube (20) also includes a first heat-conducting partition plate (31) and a second heat-conducting partition plate (32), the first heat-conducting partition plate (31) and the second heat-conducting partition plate (32) divide the cooling water cavity (22) to form a water channel with an S-shaped cross-section, the first heat-conducting partition plate (31) is completely arranged in the cooling water cavity (22), one end of the second heat-conducting partition plate (32) is arranged in the cooling water cavity (22), and the other cavity passes through the cooling air cavity (21), and the second heat-conducting partition plate (32) is provided with a first ventilation hole (321).

4. The diesel engine cooling system according to claim 3, characterized in that: The partition plate (30) is provided with a through groove (33), and a butterfly valve (34) is sealedly installed in the through groove (33).

5. The diesel engine cooling system according to claim 2, characterized in that: The diesel engine cooling system comprises an inner tube (40), the inner tube (40) being arranged in the transverse cooling tube (20), the inner side of the inner tube (40) being the cooling water chamber (22), the cooling air chamber (21) being between the inner tube (40) and the transverse cooling tube (20), the inner side of the cooling water chamber (22) being divided into a first cooling air chamber (212) and a second cooling air chamber (212) by a heat insulation plate (41), the inner tube (40) being arranged in the first cooling air chamber (212), the air inlet pipe (23) being connected to the first cooling air chamber (212) and the second cooling air chamber (212), the first cooling air chamber (212) being opened with an exhaust pipe (42) on a side away from the air inlet pipe (23), and the second cooling air chamber (212) being connected to a plurality of air outlet pipes (25).

6. The diesel engine cooling system according to claim 5, characterized in that: The transverse cooling pipe (20) includes a third heat-conducting baffle (43) and a fourth heat-conducting baffle (44), and the third heat-conducting baffle (43) and the fourth heat-conducting baffle (44) separate the cooling water cavity (22) to form a water channel with an S-shaped cross-section. The third heat-conducting baffle (43) is completely arranged in the cooling water cavity (22), one end of the fourth heat-conducting baffle (44) is arranged in the cooling water cavity (22), and the other cavity passes through the cooling air cavity (21), and a second ventilation hole (45) is arranged on the fourth heat-conducting baffle (44).

7. The diesel engine cooling system according to claim 2, characterized in that: The diesel engine cooling system further comprises a longitudinal cooling pipe (50), the longitudinal cooling pipe (50) being arranged perpendicularly to the transverse cooling pipe (20) and being in communication with the cooling air cavity (21), and an exhaust hole (51) being provided on the top side of the longitudinal cooling pipe (50).

8. The diesel engine cooling system according to claim 2, characterized in that: The transverse cooling pipe (20) is fixedly connected to the horizontal support plate (111) via a vertical support plate (112).

9. A diesel generator set, characterized in that: It comprises the diesel engine cooling system as described in claims 1-8.

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