External cooler assisting in heat dissipation of reduction gearbox

Abstract

The invention discloses an external cooler for helping a reduction gearbox to dissipate heat, and belongs to the technical field of auxiliary devices of mechanical transmission equipment. The two heat exchangers which are connected in parallel up and down are adopted, the heat exchange area is increased, a single-stage or double-stage heat exchange mode can be flexibly started according to the heating value of the reduction gearbox, and efficient configuration of the heat dissipation capacity and reasonable utilization of energy are achieved. The efficient filter is integrated at the cooling water inlet end, and the unique inclined deposition sheet structure with the umbrella-shaped liquid guide plate can effectively capture and deposit particle impurities in cooling water, prevent a flow channel of the heat exchanger from being blocked, guarantee long-term stable heat exchange efficiency and reduce the maintenance frequency; the three-way valve group is used for connection, pipeline structure is clear, and control is flexible. When one heat exchanger or filter needs to be maintained, the valve can be switched, isolation maintenance can be carried out under the condition that the operation of the reduction gearbox is not interrupted, and the usability and the reliability of the whole system are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of auxiliary devices for mechanical transmission equipment, and particularly relates to an external cooler for helping to dissipate heat of a reduction gearbox. BACKGROUND

[0002] Under the working conditions of heavy load, high speed or continuous operation, a large amount of heat is generated due to the severe friction of gears, bearings and other components in the reduction gearbox, resulting in a sharp rise in the temperature of the lubricating oil in the gearbox. The excessively high oil temperature will cause the viscosity to decrease, the lubrication performance to deteriorate, the oil to oxidize and deteriorate, and eventually lead to the accelerated wear of internal components of the reduction gearbox and the shortened service life of the equipment. The traditional heat dissipation of the reduction gearbox mainly relies on the natural convection of the surface of the gearbox, and the heat dissipation efficiency is low, which is difficult to meet the heat dissipation demand under harsh working conditions. Although there are some external cooling schemes, they are often complex in structure, unstable in cooling efficiency, and lack effective treatment functions for impurities in the cooling medium. SUMMARY

[0003] The present application mainly solves the technical problems existing in the prior art, and provides an external cooler for helping to dissipate heat of a reduction gearbox.

[0004] The above technical problems of the present application are mainly solved by the following technical scheme: an external cooler for helping to dissipate heat of a reduction gearbox, comprising a reduction gearbox and a heat exchange assembly, the heat exchange assembly being arranged on one side of the reduction gearbox.

[0005] As a preferred, the heat exchange assembly comprises two heat exchangers, the two heat exchangers are arranged in an up-down manner, each heat exchanger comprises a first inlet, a first outlet, a second inlet and a second outlet, a first liquid inlet pipe is connected to the first inlet of each heat exchanger, a first liquid outlet pipe is connected to the first outlet of each heat exchanger, a second liquid inlet pipe is connected to the second inlet of each heat exchanger, and a second liquid outlet pipe is connected to the second outlet of each heat exchanger.

[0006] As a preferred, a first liquid inlet three-way valve is installed between the two first liquid inlet pipes, a first liquid outlet three-way valve is installed between the two first liquid outlet pipes, a second liquid inlet three-way valve is installed between the two second liquid inlet pipes, and a second liquid outlet three-way valve is installed between the two second liquid outlet pipes.

[0007] As a preferred, the reduction gearbox comprises an oil outlet hole and an oil inlet hole, an oil outlet pipe is connected between the oil outlet hole and the first liquid inlet three-way valve, and an oil inlet pipe is connected between the oil inlet hole and the first liquid outlet three-way valve.

[0008] As a preferred, a cooling water inlet pipe is connected to the second liquid inlet three-way valve, and a cooling water outlet pipe is connected to the second liquid outlet three-way valve.

[0009] As a preferred, the heat exchanger is provided with a filter at one end close to the second inlet, the filter comprises a shell and a plurality of deposition sheets, the deposition sheets are arranged in the shell in an inclined manner, and the deposition sheets are arranged in the shell in an inclined manner.

[0010] Preferably, the deposition plate includes multiple liquid guiding slopes, a deposition tank is formed between the upper and lower liquid guiding slopes, an umbrella-shaped liquid guiding plate is provided on the liquid guiding slope, the umbrella-shaped liquid guiding plate is arranged perpendicular to the liquid guiding slope, and a number of liquid outlets are opened at the end away from the liquid guiding slope.

[0011] Preferably, the deposition sheet has liquid passage holes on both the left and right sides.

[0012] Preferably, the bottom of the housing is provided with a chip accumulation groove.

[0013] The beneficial effects of this invention are: by using two heat exchangers connected in parallel, the heat exchange area is increased, and single-stage or double-stage heat exchange mode can be flexibly activated according to the heat generation of the gearbox, thus realizing efficient configuration of heat dissipation capacity and rational utilization of energy.

[0014] The integrated high-efficiency filter at the cooling water inlet has a unique inclined deposition plate structure with umbrella-shaped liquid guide plates, which can effectively capture and deposit particulate impurities in the cooling water, prevent heat exchanger flow channel blockage, ensure long-term stable heat exchange efficiency, and reduce maintenance frequency.

[0015] The piping structure is clear and the control is flexible, thanks to the three-way valve assembly. When a heat exchanger or filter requires maintenance, it can be isolated and repaired without interrupting the gearbox operation by switching valves, thus improving the availability and reliability of the entire system. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the structure of the present invention;

[0017] Fig. 2 This is a schematic diagram of the structure of the filter of the present invention.

[0018] In the diagram: 1. Gearbox; 11. Oil outlet; 12. Oil inlet; 2. Heat exchange assembly; 21. Heat exchanger; 211. First inlet; 212. First outlet; 213. Second inlet; 214. Second outlet; 22. First liquid inlet pipe; 23. First liquid outlet pipe; 24. Second liquid inlet pipe; 25. Second liquid outlet pipe; 31. First liquid inlet three-way valve; 32. First liquid outlet three-way valve; 33. Second liquid inlet three-way valve; 34. Second liquid outlet three-way valve; 41. Oil outlet pipe; 42. Oil inlet pipe; 43. Cooling water inlet pipe; 44. Cooling water outlet pipe; 5. Filter; 51. Housing; 52. Deposit plate; 521. Liquid guide slope; 522. Deposit tank; 523. Umbrella-shaped liquid guide plate; 524. Liquid outlet; 525. Liquid passage hole; 53. Chip accumulation tank. Detailed Implementation

[0019] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0020] Example: An external cooler to help dissipate heat from the gearbox, such as... Figs. 1-2 As shown, it includes a gearbox 1 and a heat exchange assembly 2, with the heat exchange assembly 2 located on one side of the gearbox 1.

[0021] The heat exchange assembly 2 includes two heat exchangers 21 arranged vertically. Each heat exchanger 21 includes a first inlet 211, a first outlet 212, a second inlet 213, and a second outlet 214. A first liquid inlet pipe 22 is connected to the first inlet 211 of each heat exchanger 21, a first liquid outlet pipe 23 is connected to the first outlet 212, a second liquid inlet pipe 24 is connected to the second inlet 213, and a second liquid outlet pipe 25 is connected to the second outlet 214.

[0022] A first inlet three-way valve 31 is installed between the two first inlet pipes 22, a first outlet three-way valve 32 is installed between the two first outlet pipes 23, a second inlet three-way valve 33 is installed between the two second inlet pipes 24, and a second outlet three-way valve 34 is installed between the two second outlet pipes 25.

[0023] The gearbox 1 includes an oil outlet 11 and an oil inlet 12. An oil outlet pipe 41 is connected between the oil outlet 11 and the first inlet three-way valve 31, and an oil inlet pipe 42 is connected between the oil inlet 12 and the first outlet three-way valve 32.

[0024] A cooling water inlet pipe 43 is connected to the second inlet three-way valve 33, and a cooling water outlet pipe 44 is connected to the second outlet three-way valve 34.

[0025] The heat exchanger 21 is provided with a filter 5 at one end near the second inlet 213. The filter 5 includes a housing 51 and multiple deposition plates 52, which are inclinedly disposed inside the housing 51.

[0026] The deposition plate 52 includes multiple liquid guiding slopes 521, and a deposition groove 522 is formed between two upper and lower liquid guiding slopes 521. An umbrella-shaped liquid guiding plate 523 is provided on the liquid guiding slope 521. The umbrella-shaped liquid guiding plate 523 is arranged perpendicularly to the liquid guiding slope 521, and a plurality of liquid outlets 524 are opened at the end away from the liquid guiding slope 521.

[0027] Liquid passage holes 525 are provided on both the left and right sides of the deposition plate 52.

[0028] The principle of this invention: In practice, high-temperature lubricating oil flows out from the oil outlet 11 of the gearbox 1 through the oil outlet pipe 41, and is distributed to the first flow channel (i.e., the flow channel from the first inlet 211 to the first outlet 212) of one or two heat exchangers 21 via the first inlet three-way valve 31. Simultaneously, external cooling water flows in through the cooling water inlet pipe 43 and is distributed to the second flow channel (i.e., the flow channel from the second inlet 213 to the second outlet 214) of one or two heat exchangers 21 via the second inlet three-way valve 33. Inside the heat exchangers, the high-temperature oil and cooling water exchange heat through the partition wall, thus reducing the oil temperature.

[0029] Before entering the first flow channel, the high-temperature lubricating oil first flows through the filter 5. Inside the housing 51, it passes through the inclined stacked deposit plates 52 and enters through the top liquid inlet 525. Impurities in the water flow are dispersed after impacting the umbrella-shaped guide plate 523 and flow along the guide slope 521 with the water flow. During this flow, heavier particles are separated from the water flow by gravity, fall into the deposit tank 522, and finally slide into the debris accumulation tank 53 at the bottom of the housing. The preliminarily purified water then flows to the next plate through the liquid inlets 525 on both sides of the deposit plate 52, and after multi-stage filtration, enters the heat exchanger, effectively protecting the heat exchange flow channel.

[0030] The cooled lubricating oil is collected from the first outlet pipe 23, passes through the first outlet three-way valve 32 and the oil inlet pipe 42, and returns to the gearbox 1 through the oil inlet hole 12, completing one cycle. The cooled water after heat exchange is collected through the second outlet three-way valve 34 and discharged through the cooled water outlet pipe 44.

[0031] By operating each three-way valve, multiple operating modes can be achieved, such as full-power heat dissipation of dual heat exchangers, half-power heat dissipation of single heat exchanger, and bypass mode (for maintenance), which greatly improves the adaptability and economy of the system.

[0032] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and many variations are possible. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention should be considered within the protection scope of the present invention.

Claims

1. An external cooler for dissipating heat from a gearbox, comprising a gearbox (1) and a heat exchange assembly (2), characterized in that: The heat exchange component (2) is located on one side of the gearbox (1).

2. An external cooler for dissipating heat from a gearbox according to claim 1, characterized in that: The heat exchange assembly (2) includes two heat exchangers (21) arranged vertically. Each heat exchanger (21) includes a first inlet (211), a first outlet (212), a second inlet (213), and a second outlet (214). A first liquid inlet pipe (22) is connected to the first inlet (211) of each heat exchanger (21), a first liquid outlet pipe (23) is connected to the first outlet (212), a second liquid inlet pipe (24) is connected to the second inlet (213), and a second liquid outlet pipe (25) is connected to the second outlet (214).

3. An external cooler for dissipating heat from a gearbox according to claim 2, characterized in that: A first inlet three-way valve (31) is installed between the two first inlet pipes (22), a first outlet three-way valve (32) is installed between the two first outlet pipes (23), a second inlet three-way valve (33) is installed between the two second inlet pipes (24), and a second outlet three-way valve (34) is installed between the two second outlet pipes (25).

4. An external cooler for dissipating heat from a gearbox according to claim 3, characterized in that: The gearbox (1) includes an oil outlet (11) and an oil inlet (12). An oil outlet pipe (41) is connected between the oil outlet (11) and the first inlet three-way valve (31), and an oil inlet pipe (42) is connected between the oil inlet (12) and the first outlet three-way valve (32).

5. An external cooler for dissipating heat from a gearbox according to claim 3, characterized in that: A cooling water inlet pipe (43) is connected to the second inlet three-way valve (33), and a cooling water outlet pipe (44) is connected to the second outlet three-way valve (34).

6. An external cooler for dissipating heat from a gearbox according to claim 2, characterized in that: The heat exchanger (21) has a filter (5) at one end near the second inlet (213). The filter (5) includes a shell (51) and multiple deposit plates (52), which are inclined inside the shell (51).

7. An external cooler for dissipating heat from a gearbox according to claim 6, characterized in that: The deposition plate (52) includes multiple liquid guiding slopes (521), and a deposition tank (522) is formed between the upper and lower liquid guiding slopes (521). An umbrella-shaped liquid guiding plate (523) is provided on the liquid guiding slope (521). The umbrella-shaped liquid guiding plate (523) is arranged perpendicular to the liquid guiding slope (521) and has several liquid outlets (524) at the end away from the liquid guiding slope (521).

8. An external cooler for dissipating heat from a gearbox according to claim 7, characterized in that: Liquid passage holes (525) are provided on both the left and right sides of the deposition plate (52).

9. An external cooler for dissipating heat from a gearbox according to claim 6, characterized in that: The bottom of the housing (51) is provided with a chip accumulation groove (53).

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