CN116877677B - Gear box lubrication cooling system - Google Patents
Gear box lubrication cooling system Download PDFInfo
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- CN116877677B CN116877677B CN202310914279.3A CN202310914279A CN116877677B CN 116877677 B CN116877677 B CN 116877677B CN 202310914279 A CN202310914279 A CN 202310914279A CN 116877677 B CN116877677 B CN 116877677B
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- oil
- overflow valve
- valve
- cooler
- filter
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- 238000001816 cooling Methods 0.000 title claims abstract description 84
- 238000005461 lubrication Methods 0.000 title claims abstract description 83
- 238000001514 detection method Methods 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 239000003921 oil Substances 0.000 abstract description 201
- 239000010687 lubricating oil Substances 0.000 abstract description 35
- 230000001050 lubricating effect Effects 0.000 abstract description 9
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 239000000314 lubricant Substances 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0413—Controlled cooling or heating of lubricant; Temperature control therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0402—Cleaning of lubricants, e.g. filters or magnets
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention belongs to the technical field of fan gear boxes, and particularly discloses a gear box lubrication and cooling system. The oil pump and the cooler are sequentially connected in series, the inlet end of the oil pump is communicated with the first oil outlet hole of the gear box body, and the outlet end of the cooler is communicated with the first oil inlet hole, so that lubricating oil enters the cooler to be cooled and then returns to the gear box, and a lubricating and cooling circulation loop in the existing scheme is formed; the first overflow valve is arranged in parallel with the cooler, the inlet end of the first overflow valve is communicated with the outlet end of the oil pump, the outlet end of the first overflow valve is communicated with the second oil inlet hole, when the pressure value detected by the first pressure detecting piece is larger than a set value, the first overflow valve switches the flow loop of lubricating oil, so that lubricating oil flowing out of the gear box body flows back into the gear box body after passing through the first overflow valve, oil pressure is prevented from being damaged due to overlarge oil pressure, a gear box lubrication cooling system is protected, and the service life of the gear box lubrication cooling system is prolonged.
Description
Technical Field
The invention relates to the technical field of fan gear boxes, in particular to a gear box lubrication cooling system.
Background
The lubrication and cooling system of the fan gear box is an important system of the wind generating set, and because the load of the fan gear box is large, the rotating speed is high, the heat generation is serious in the running process, and the lubrication and cooling are particularly important.
The current gear box lubrication cooling system adopts a temperature control valve as a main control valve, and a cooling lubrication loop of the current gear box lubrication cooling system operates as follows: the lubricating oil reaches the temperature control valve after being filtered by the filter, and the temperature control valve can control the flow direction of the lubricating oil according to the temperature of the lubricating oil. Generally, when the oil temperature is lower than 45 ℃, the lubricating oil directly enters the oil way distributor of the gear box without cooling. When the oil temperature is higher than 45 ℃, the temperature control valve starts to work, lubricating oil firstly enters a cooler (common air cooling or water cooling), is cooled by the cooler, and returns to the gear box after passing through the oil way distributor of the gear box, so that the purpose of lubricating and cooling circulation is achieved.
However, the conventional gear box lubrication cooling system determines whether the lubricant is allowed to be cooled by the cooler or not as the determination factor is the temperature, and because the rotation speed is higher when the oil pump in the gear box runs, the impact of the lubricant on the oil pipe is larger, the oil pipe is easy to damage, and the practicability of the conventional gear box lubrication cooling system is insufficient.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is that the oil pipe is easy to damage due to higher rotating speed when the oil pump in the gear box operates in the prior art, so that the practicability of the conventional gear box lubricating and cooling system is insufficient.
To this end, the invention provides a gearbox lubrication cooling system comprising:
The gearbox comprises a gearbox body, wherein the gearbox body is provided with a first oil outlet, a first oil inlet and a second oil inlet which are arranged at intervals, and the first oil inlet and the second oil inlet are positioned above the first oil outlet along the height direction;
the external circulation loop comprises an oil pump, a cooler and a first overflow valve, wherein the oil pump and the cooler are sequentially connected in series, the inlet end of the oil pump is communicated with the first oil outlet, the outlet end of the cooler is communicated with the first oil inlet, the first overflow valve is arranged in parallel with the cooler, the inlet end of the first overflow valve is communicated with the outlet end of the oil pump, and the outlet end of the first overflow valve is communicated with the second oil inlet;
the pressure detection assembly comprises a first pressure detection piece, wherein the first pressure detection piece is positioned between the outlet end of the oil pump and the inlet end of the cooler.
Optionally, the gearbox lubrication and cooling system described above,
The external circulation loop further comprises a second overflow valve and a first electromagnetic valve, the second overflow valve is arranged in parallel with the cooler, the first electromagnetic valve is arranged in parallel with the second overflow valve, the first electromagnetic valve is arranged in parallel with the cooler, the inlet end of the second overflow valve and the inlet end of the first electromagnetic valve are communicated with the outlet end of the oil pump, and the outlet end of the second overflow valve and the outlet end of the first electromagnetic valve are communicated with the first oil inlet hole.
Optionally, the gearbox lubrication and cooling system described above,
The oil pump further comprises a first filtering loop, the first filtering loop comprises a first filter and a third overflow valve, the first filter is connected in series with the cooler, the inlet end of the first filter is communicated with the outlet end of the oil pump, the outlet end of the first filter is communicated with the inlet end of the cooler, the third overflow valve is connected in parallel with the first filter, the inlet end of the third overflow valve is communicated with the outlet end of the oil pump, the outlet end of the third overflow valve is communicated with the inlet end of the cooler, and the outlet end of the third overflow valve is located between the outlet end of the first filter and the inlet end of the cooler.
Optionally, the gearbox lubrication and cooling system described above,
The gear box body further comprises a fourth oil inlet hole, a third oil inlet hole, a second oil outlet hole and a fifth oil inlet hole, wherein the fourth oil inlet hole, the third oil inlet hole and the fifth oil inlet hole are positioned on the lower wall surface of the gear box body, the second oil outlet hole is positioned on the side wall surface of the gear box body, and the second oil outlet hole is positioned below the gear box body;
still include idle speed lubrication circuit, idle speed lubrication circuit includes second filter, second solenoid valve and idle speed pump, the entry end of second filter with fourth inlet port intercommunication, the second solenoid valve is two tee bend solenoid valves, the second solenoid valve is equipped with P interface, T interface and A interface, the P interface with the entry end intercommunication of second filter, T interface and third inlet port intercommunication, A interface and idle speed pump's first exit end intercommunication, idle speed pump's entry end with second outlet port intercommunication, idle speed pump's second exit end with fifth inlet port intercommunication.
Optionally, the gearbox lubrication and cooling system described above,
The gear box body further comprises a sixth oil inlet hole, and the sixth oil inlet hole is positioned on the lower wall surface of the gear box body;
The idle lubrication circuit further comprises a fourth overflow valve, the inlet end of the fourth overflow valve is communicated with the interface A, and the outlet end of the fourth overflow valve is communicated with the sixth oil inlet hole.
Optionally, the gearbox lubrication and cooling system described above,
The gearbox body further comprises a seventh oil inlet hole, the seventh oil inlet hole is arranged on the side wall surface of the gearbox body, and the seventh oil inlet hole is positioned above the first oil outlet hole along the height direction;
The oil pump further comprises a gas release loop, the gas release loop comprises a first ball valve, a third filter and a first throttle valve which are sequentially connected in series, the inlet end of the first ball valve is communicated with the outlet end of the oil pump, and the outlet end of the first throttle valve is communicated with the seventh oil inlet hole.
Optionally, the gearbox lubrication and cooling system described above,
The gear box body further comprises an eighth oil inlet hole, the eighth oil inlet hole is arranged on the upper wall surface of the gear box body, and the eighth oil inlet hole and the first oil inlet hole are arranged at intervals;
The oil pump is characterized by further comprising a second filtering loop, wherein the second filtering loop comprises a second ball valve, a fourth filter, a second throttle valve, a fifth filter and a fifth overflow valve, the second ball valve, the fourth filter, the second throttle valve and the fifth filter are sequentially connected in series, the inlet end of the second ball valve is communicated with the outlet end of the oil pump, the outlet end of the fifth filter is communicated with an eighth oil inlet hole, the fifth overflow valve and the fifth filter are arranged in parallel, the inlet end of the fifth overflow valve is communicated with the outlet end of the second throttle valve, and the outlet end of the fifth overflow valve is communicated with the eighth oil inlet hole.
Optionally, the gearbox lubrication and cooling system described above,
The external circulation loop further comprises a sixth overflow valve, the sixth overflow valve is arranged in parallel with the oil pump, the inlet end of the sixth overflow valve is communicated with the first oil outlet, and the outlet end of the sixth overflow valve is communicated with the inlet end of the cooler.
Optionally, the gearbox lubrication and cooling system described above,
The automatic gearbox further comprises a liquid level detection piece, wherein the liquid level detection piece is installed on the gearbox body.
Optionally, the gearbox lubrication and cooling system described above,
The heating element is mounted on the gear box.
The technical scheme provided by the invention has the following advantages:
1. The invention provides a gear box lubrication cooling system which comprises a gear box body, an external circulation loop and a pressure detection assembly. The gearbox comprises a gearbox body, a first oil inlet, a second oil inlet and a first oil outlet, wherein the first oil outlet, the first oil inlet and the second oil inlet are arranged at intervals, and the first oil inlet and the second oil inlet are positioned above the first oil outlet along the height direction; the external circulation loop comprises an oil pump, a cooler and a first overflow valve, wherein the oil pump and the cooler are sequentially connected in series, the inlet end of the oil pump is communicated with the first oil outlet, the outlet end of the cooler is communicated with the first oil inlet, the first overflow valve is arranged in parallel with the cooler, the inlet end of the first overflow valve is communicated with the outlet end of the oil pump, and the outlet end of the first overflow valve is communicated with the second oil inlet; the pressure sensing assembly includes a first pressure sensing member located between the outlet end of the oil pump and the inlet end of the cooler.
According to the gear box lubrication cooling system with the structure, the oil pump and the cooler are sequentially connected in series, the inlet end of the oil pump is communicated with the first oil outlet of the gear box body, the outlet end of the cooler is communicated with the first oil inlet, so that lubricating oil enters the cooler to be cooled and then returns to the gear box, and a lubrication cooling circulation loop in the existing scheme is formed; and add first overflow valve in outer circulation loop, set up first overflow valve and cooler parallelly connected, with the exit end intercommunication of first overflow valve and oil pump, with the exit end and the second inlet port intercommunication of first overflow valve, when the pressure value that the first pressure detection piece detected is greater than the setting value, the flow-through return circuit of lubricating oil is switched to first overflow valve, make the lubricating oil that the gear box body flows out flow directly back to the gear box body inside after first overflow valve, the oil pressure is too big when preventing the high-speed operation of lubricating oil, and then prevent that oil pipe is impaired, with this protection gear box lubrication cooling system, the life-span of gear box lubrication cooling system has been prolonged, the practicality of gear box lubrication cooling system has been promoted.
2. The external circulation loop further comprises a second overflow valve and a first electromagnetic valve, wherein the second overflow valve is arranged in parallel with the cooler, the first electromagnetic valve is arranged in parallel with the second overflow valve, the first electromagnetic valve is arranged in parallel with the cooler, the inlet ends of the first electromagnetic valve and the second overflow valve and the inlet end of the first electromagnetic valve are communicated with the outlet end of the oil pump, and the outlet end of the second overflow valve and the outlet end of the first electromagnetic valve are communicated with the first oil inlet hole.
According to the gear box lubrication cooling system with the structure, the second overflow valve and the first electromagnetic valve are additionally arranged, namely, the second overflow valve and the cooler are arranged in parallel, the first electromagnetic valve and the second overflow valve are arranged in parallel, and the first electromagnetic valve and the cooler are arranged in parallel, when the first pressure detection piece detects that the pressure value is larger than the set value, the second overflow valve switches the flow loop of lubricating oil, so that the lubricating oil flows out from the outlet end of the oil pump and then passes through the first electromagnetic valve, the flow path of the lubricating oil is increased, the pressure in the oil pipe is reduced, the oil pipe is prevented from being damaged, the gear box lubrication cooling system is protected, and the service life of the gear box lubrication cooling system is prolonged; meanwhile, through increasing the flow path of the lubricating oil, the heat dissipation area of the lubricating oil can be increased, so that the purpose of reducing the temperature of the lubricating oil is achieved, and the practicability of a lubricating cooling system of the gearbox is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a gearbox lubrication cooling system provided by an embodiment of the present invention;
FIG. 2 is a schematic illustration of a gearbox housing in a gearbox lubrication and cooling system provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of an idle lubrication circuit in a gearbox lubrication cooling system provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of a second filter circuit in a gearbox lubrication cooling system provided by an embodiment of the present invention;
reference numerals illustrate:
1-a gearbox body; 101-a first oil outlet hole; 102-a first oil inlet hole; 103-a fourth oil inlet hole; 104-a third oil inlet hole; 105-a second oil outlet hole; 106-a fifth oil inlet hole; 107-sixth oil inlet holes; 108-a seventh oil inlet hole; 109-eighth oil inlet hole; 111-a second oil inlet hole;
21-an oil pump; 22-a cooler; 23-a first overflow valve; 24-a second overflow valve; 25-a first solenoid valve; 26-a sixth overflow valve; 27-a third ball valve;
31-a first pressure detecting member; 32-a second pressure detecting member;
4-a first filtration loop; 41-a first filter; 42-a third overflow valve;
5-an idle lubrication circuit; 51-a second filter; 52-a second solenoid valve; 521-P interface; 522-T interface; 523-A interface; 53-idle pump; 54-fourth overflow valve;
6-a deflation circuit; 61-a first ball valve; 62-a third filter; 63-a first throttle valve;
7-a second filtration loop; 71-a second ball valve; 72-a fourth filter; 73-a second throttle valve; 74-a fifth filter; 75-a fifth overflow valve; 76-fourth ball valve;
81-a liquid level detection member; 82-heating element; 83-a first tube; 84-a second tube.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
In this embodiment, a lubrication and cooling system for a gearbox is provided, as shown in fig. 1 to 4, comprising a gearbox body 1, an external circulation circuit and a pressure detection assembly. The gearbox body 1 is provided with a first oil outlet 101, a first oil inlet 102 and a second oil inlet 111 which are arranged at intervals, and the first oil inlet 102 and the second oil inlet 111 are positioned above the first oil outlet 101 along the height direction; the external circulation loop comprises an oil pump 21, a cooler 22 and a first overflow valve 23, wherein the oil pump 21 and the cooler 22 are sequentially connected in series, the inlet end of the oil pump 21 is communicated with a first oil outlet 101, the outlet end of the cooler 22 is communicated with a first oil inlet 102, the first overflow valve 23 is arranged in parallel with the cooler 22, the inlet end of the first overflow valve 23 is communicated with the outlet end of the oil pump 21, and the outlet end of the first overflow valve 23 is communicated with a second oil inlet 111; the pressure detection assembly includes a first pressure detection member 31, the first pressure detection member 31 being located between the outlet end of the oil pump 21 and the inlet end of the cooler 22.
According to the gear box lubrication cooling system with the structure, the oil pump 21 and the cooler 22 are sequentially connected in series, the inlet end of the oil pump 21 is communicated with the first oil outlet 101 of the gear box body 1, the outlet end of the cooler 22 is communicated with the first oil inlet 102, so that lubricating oil enters the cooler 22 to be cooled and then returns to the gear box, and a lubrication cooling circulation loop in the existing scheme is formed; the first overflow valve 23 is additionally arranged in the external circulation loop, the first overflow valve 23 and the cooler 22 are arranged in parallel, the inlet end of the first overflow valve 23 is communicated with the outlet end of the oil pump 21, the outlet end of the first overflow valve 23 is communicated with the second oil inlet hole 111, when the pressure value detected by the first pressure detecting piece 31 is greater than a set value, the first overflow valve 23 switches the flowing loop of lubricating oil, so that the lubricating oil flowing out of the gear box body 1 directly flows back into the gear box body 1 after passing through the first overflow valve 23, the oil pressure is prevented from being excessively high when the lubricating oil runs at a high speed, and further the damage of an oil pipe is prevented, so that the gear box lubricating and cooling system is protected, the service life of the gear box lubricating and cooling system is prolonged, and the practicability of the gear box lubricating and cooling system is improved.
It may be noted that, in the gearbox lubrication cooling system provided in this embodiment, the third ball valve 27 is added between the first oil outlet 101 of the gearbox body 1 and the inlet end of the oil pump 21, so as to control on/off of the lubricant oil path between the first oil outlet 101 of the gearbox body 1 and the inlet end of the oil pump 21.
It should be noted that the gearbox lubrication and cooling system provided in this embodiment, as shown in fig. 1, is provided with two double speed fans at the cooler 22.
As shown in fig. 1 to 4, the external circulation circuit further includes a second relief valve 24 and a first solenoid valve 25, the second relief valve 24 is disposed in parallel with the cooler 22, the first solenoid valve 25 is disposed in parallel with the second relief valve 24, and the first solenoid valve 25 is disposed in parallel with the cooler 22, both an inlet end of the second relief valve 24 and an inlet end of the first solenoid valve 25 are communicated with an outlet end of the oil pump 21, and both an outlet end of the second relief valve 24 and an outlet end of the first solenoid valve 25 are communicated with the first oil inlet hole 102.
In the gear box lubrication cooling system with the above structure, the second overflow valve 24 and the first electromagnetic valve 25 are additionally arranged, namely, the second overflow valve 24 and the cooler 22 are arranged in parallel, the first electromagnetic valve 25 and the second overflow valve 24 are arranged in parallel, and the first electromagnetic valve 25 and the cooler 22 are arranged in parallel, when the first pressure detection piece 31 detects that the pressure value is greater than the set value, the second overflow valve 24 switches the flow loop of lubricating oil, so that the lubricating oil flows out from the outlet end of the oil pump 21 and passes through the first electromagnetic valve 25, the flow path of the lubricating oil is increased, the pressure in the oil pipe is reduced, and the oil pipe is further prevented from being damaged, thereby protecting the gear box lubrication cooling system; meanwhile, through increasing the flow path of the lubricating oil, the heat dissipation area of the lubricating oil can be increased, so that the purpose of reducing the oil temperature of the lubricating oil is realized, the service life of a lubricating cooling system of a gear box is prolonged, and the practicability of the lubricating cooling system of the gear box is further improved.
It may be noted that, in the gearbox lubrication cooling system provided in this embodiment, the first electromagnetic valve 25 is a two-position two-way electromagnetic valve, and the internal circulation summer opening temperature of the two-position two-way electromagnetic valve is 23 ℃, the external circulation summer opening temperature is 28 ℃, the internal circulation winter opening temperature is 25 ℃, and the external circulation winter opening temperature is 30 ℃.
As shown in fig. 1 to 4, the gear box lubrication cooling system provided by the present embodiment further includes a first filter circuit 4, the first filter circuit 4 includes a first filter 41 and a third relief valve 42, the first filter 41 is connected in series with the cooler 22, an inlet end of the first filter 41 is communicated with an outlet end of the oil pump 21, an outlet end of the first filter 41 is communicated with an inlet end of the cooler 22, the third relief valve 42 is connected in parallel with the first filter 41, an inlet end of the third relief valve 42 is communicated with an outlet end of the oil pump 21, an outlet end of the third relief valve 42 is communicated with an inlet end of the cooler 22, and an outlet end of the third relief valve 42 is located between the outlet end of the first filter 41 and the inlet end of the cooler 22.
As shown in fig. 1 to 4, the gearbox lubrication and cooling system provided in this embodiment further includes a fourth oil inlet 103, a third oil inlet 104, a second oil outlet 105 and a fifth oil inlet 106, where the fourth oil inlet 103, the third oil inlet 104 and the fifth oil inlet 106 are located on a lower wall surface of the gearbox body 1, the second oil outlet 105 is located on a side wall surface of the gearbox body 1, and the second oil outlet 105 is located below the gearbox body 1; the idle lubrication circuit 5 is further included, the idle lubrication circuit 5 comprises a second filter 51, a second electromagnetic valve 52 and an idle pump 53, the inlet end of the second filter 51 is communicated with a fourth oil inlet hole 103, the second electromagnetic valve 52 is a two-position three-way electromagnetic valve, the second electromagnetic valve 52 is provided with a P interface 521, a T interface 522 and an A interface 523, the P interface 521 is communicated with the inlet end of the second filter 51, the T interface 522 is communicated with a third oil inlet hole 104, the A interface 523 is communicated with the first outlet end of the idle pump 53, the inlet end of the idle pump 53 is communicated with a second oil outlet hole 105, and the second outlet end of the idle pump 53 is communicated with a fifth oil inlet hole 106. For example, in the present embodiment, the pressure failure value of the idle pump 53 is 0.5bar.
In the gearbox lubrication and cooling system with the above structure, when the second electromagnetic valve 52 does not work, as shown in fig. 1, the P interface 521 is communicated with the a interface 523, so that the lubricating oil in the gearbox body 1 passes through the second filter 51, and the filtering of the lubricating oil is realized; when the second solenoid valve 52 is operated (not shown), the T-port 521 communicates with the a-port 523 so that the lubricant inside the gear case body 1 does not pass through the second filter 51.
It may be noted that, in the gearbox lubrication cooling system provided in this embodiment, the gearbox body 1 further includes a sixth oil inlet hole 107, where the sixth oil inlet hole 107 is located on a lower wall surface of the gearbox body 1; the idle lubrication circuit 5 further includes a fourth spill valve 54, an inlet end of the fourth spill valve 54 communicating with the a-port 523, and an outlet end of the fourth spill valve 54 communicating with the sixth oil inlet 107.
As shown in fig. 1 to 4, in the gearbox lubrication and cooling system provided in this embodiment, the gearbox body 1 further includes a seventh oil inlet hole 108, the seventh oil inlet hole 108 is disposed on a side wall surface of the gearbox body 1, and the seventh oil inlet hole 108 is located above the first oil outlet hole 101 along the height direction; and the air release circuit 6 is further included, the air release circuit 6 comprises a first ball valve 61, a third filter 62 and a first throttle valve 63 which are sequentially connected in series, the inlet end of the first ball valve 61 is communicated with the outlet end of the oil pump 21, and the outlet end of the first throttle valve 63 is communicated with a seventh oil inlet hole 108.
As shown in fig. 1 to 4, in the gearbox lubrication cooling system provided in this embodiment, the gearbox body 1 further includes an eighth oil inlet 109, the eighth oil inlet 109 is disposed on an upper wall surface of the gearbox body 1, and the eighth oil inlet 109 is disposed at a distance from the first oil inlet 102; the second filter circuit 7 is further included, the second filter circuit 7 comprises a second ball valve 71, a fourth filter 72, a second throttle valve 73, a fifth filter 74 and a fifth overflow valve 75, the second ball valve 71, the fourth filter 72, the second throttle valve 73 and the fifth filter 74 are sequentially connected in series, an inlet end of the second ball valve 71 is communicated with an outlet end of the oil pump 21, an outlet end of the fifth filter 74 is communicated with an eighth oil inlet hole 109, the fifth overflow valve 75 is arranged in parallel with the fifth filter 74, an inlet end of the fifth overflow valve 75 is communicated with an outlet end of the second throttle valve 73, and an outlet end of the fifth overflow valve 75 is communicated with the eighth oil inlet hole 109.
It may be noted that, in the above embodiment, the filtering precision of the first filter 41 is between 10 micrometers and 50 micrometers, and as an online filter, it can be ensured that the gearbox lubrication cooling system does not have sudden breakdown event; and the fourth filter 72 and the fifth filter 74 are arranged, the filtering precision of the second filtering circuit 7 is controlled to be between 0.5 micrometers and 3 micrometers, and the filter is used as an off-line filter with higher filtering precision, so that the problem that the cleanliness of lubricating oil does not reach the standard can be solved, the cleanliness of the lubricating oil is ensured to be maintained at an ideal level, and the service life of the gear box body 1 is prolonged.
Further, the gearbox lubrication and cooling system provided in this embodiment, as shown in fig. 1, the second filtering circuit 7 further includes a fourth ball valve 76, where the fourth ball valve 76 is used for sampling.
The parameters of the oil pump 21 are not limited to the gear box lubrication and cooling system provided in the above embodiment. In order to facilitate rapid reduction of the oil pressure during the operation of the lubricating oil, the oil pump 21 is selected to have two operation states, specifically, the oil pump 21 has two rotation speed states, namely, a high speed state with a rotation speed of 280L/min and a low speed state with a rotation speed of 140L/min, when the oil pump 21 is switched from the high speed state to the low speed state, the time of the low speed operation of the oil pump 21 is 300S, after the low speed operation is completed, the operation is stopped for 1500S, and the oil pump 21 is selected to have a high speed start temperature of 35 ℃ and a high speed stop temperature of 30 ℃. Meanwhile, as shown in fig. 1 to 4, in the gearbox lubrication and cooling system provided in this embodiment, the external circulation circuit further includes a sixth relief valve 26, the sixth relief valve 26 is disposed in parallel with the oil pump 21, an inlet end of the sixth relief valve 26 communicates with the first oil outlet 101, and an outlet end of the sixth relief valve 26 communicates with an inlet end of the cooler 22.
Further, in the gearbox lubrication and cooling system provided by the embodiment, the low-speed summer start temperature of the cooler 22 is 43 ℃, the low-speed summer stop temperature is 38 ℃, the high-speed summer start temperature is 50 ℃, and the high-speed summer stop temperature is 45 ℃; the cold zone device has a low-speed winter starting temperature of 48 ℃, a low-speed winter stopping temperature of 43 ℃, a high-speed winter starting temperature of 60 ℃ and a high-speed winter stopping temperature of 53 ℃.
As shown in fig. 1 to 4, the lubrication and cooling system for a gearbox provided in this embodiment further includes a liquid level detecting member 81, and the liquid level detecting member 81 is mounted on the gearbox body 1.
It should be noted that, in the lubrication and cooling system for a gearbox provided in this embodiment, the liquid level detecting member 81 is a liquid level gauge.
As shown in fig. 1 to 4, the lubrication and cooling system for a gearbox provided in this embodiment further includes a heating element 82, where the heating element 82 is mounted on the gearbox.
It should be noted that, in the gearbox lubrication and cooling system provided in this embodiment, the heating element 82 is composed of three or six 800W heaters, and the heating element 82 is installed at the lower wall surface of the gearbox body 1.
It may be noted that, in the gearbox lubrication cooling system provided in the above embodiment, the heating start temperature of the heater is less than or equal to 15 ℃ and the heating shut-off temperature is greater than or equal to 20 ℃.
In the above-described embodiment, the type of the first pressure detecting member 31 is not limited. As one of the embodiments, the first pressure detecting member 31 is a pressure measuring connector, so as to be externally connected with a pressure measuring member, thereby realizing the purpose of accurately measuring the oil pressure.
Of course, the number of the first pressure detecting members 31 is not limited by the gearbox lubrication and cooling system provided in the present embodiment. As one of the embodiments, as shown in fig. 1, five first pressure detecting pieces 31 are provided. Specifically, the first pressure detecting member 31 is provided between the first oil outlet 101 of the gear case body 1 and the inlet end of the oil pump 21, between the outlet end of the oil pump 21 and the inlet end of the first filter 41, between the outlet end of the first filter 41 and the inlet end of the cooler 22, near the outlet end of the cooler 22, and near the first oil inlet 102.
In the above embodiment, the pressure detecting assembly further includes the second pressure detecting member 32, and the type of the second pressure detecting member 32 is not limited at this time, and as one embodiment, the second pressure detecting member 32 is a pressure sensor, which is used as a pressure switch to control the on/off of the oil path.
Of course, the number of the second pressure detecting members 32 is not limited to the gear box lubrication cooling system provided in this embodiment, and as one embodiment, four second pressure detecting members 32 are provided as shown in fig. 1. Specifically, the second pressure detecting member 32 is disposed between the outlet end of the oil pump 21 and the inlet end of the first filter 41, between the outlet end of the first filter 41 and the inlet end of the cooler 22, between the inlet end of the fifth filter 74 and at the first oil inlet hole 102, so as to realize communication or closing of the oil passages between the outlet end of the oil pump 21 and the inlet end of the first filter 41, between the outlet end of the first filter 41 and the inlet end of the cooler 22, between the inlet end of the fifth filter 74 and at the first oil inlet hole 102.
Further, the inlet pressure alarm value of the first filter 41 is 14bar; the pressure sensor in the second filter circuit 7 has a pressure warning value of 2.3bar.
It may be noted that in the above embodiment, the second relief valve 24 is selected to be a relief valve of no 12bar, so that the oil pressure in the oil line at the second relief valve 24 is maintained in the range of 0-12 bar; the third relief valve 42 is selected to be a 2bar relief valve, so that the oil pressure in the oil pipe at the third relief valve 42 is maintained in the range of 0-2 bar; the fifth relief valve 75 is chosen to be a 3bar relief valve such that the oil pressure in the oil line at the fifth relief valve 75 is maintained in the range of 0-3 bar.
It may be noted that in the above embodiments, the pressure detection assembly further includes a pressure gauge to facilitate reading of the oil pressure. The number of pressure gauges is not limited in the gearbox lubrication and cooling system provided in this embodiment, and as one embodiment, as shown in fig. 1, two pressure gauges are provided, and the two pressure gauges are provided at the first filter 41 and the fifth filter 74, respectively.
In the above-described embodiment, the first pipe member 83 and the second pipe member 84 are also provided. At this time, a first pipe 83 is provided between the third ball valve 27 and the inlet end of the oil pump 21, and a second pipe 84 is installed between the outlet end of the oil pump 21 and the inlet end of the first filter 41, between the outlet end of the first filter 41 and the inlet end of the cooler 22, and between the outlet end of the cooler 22 and the first oil inlet hole 102.
Further, the first pipe 83 and the second pipe 84 are different in size, and the first pipe 83 is a 4-inch hose, which is used as an oil suction hose for lubricating oil flowing out from the gear box body 1; the second pipe 84 is a 2.5 inch hose, which serves as a pressure oil hose through which lubricating oil flows. In addition, the first pipe 83 and the second pipe 84 are provided with SAE flanges, which facilitate connection of pipes.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (9)
1. A gearbox lubrication cooling system, comprising:
The gearbox comprises a gearbox body (1), wherein the gearbox body (1) is provided with a first oil outlet (101), a first oil inlet (102) and a second oil inlet (111) which are arranged at intervals, and the first oil inlet (102) and the second oil inlet (111) are positioned above the first oil outlet (101) along the height direction;
The external circulation loop comprises an oil pump (21), a cooler (22) and a first overflow valve (23), wherein the oil pump (21) and the cooler (22) are sequentially connected in series, the inlet end of the oil pump (21) is communicated with the first oil outlet (101), the outlet end of the cooler (22) is communicated with the first oil inlet (102), the first overflow valve (23) is arranged in parallel with the cooler (22), the inlet end of the first overflow valve (23) is communicated with the outlet end of the oil pump (21), and the outlet end of the first overflow valve (23) is communicated with the second oil inlet (111);
A pressure detection assembly comprising a first pressure detection member (31), the first pressure detection member (31) being located between an outlet end of the oil pump (21) and an inlet end of the cooler (22);
The external circulation loop further comprises a second overflow valve (24) and a first electromagnetic valve (25), wherein the second overflow valve (24) is arranged in parallel with the cooler (22), the first electromagnetic valve (25) is arranged in parallel with the second overflow valve (24), the first electromagnetic valve (25) is arranged in parallel with the cooler (22), the inlet end of the second overflow valve (24) and the inlet end of the first electromagnetic valve (25) are communicated with the outlet end of the oil pump (21), and the outlet end of the second overflow valve (24) and the outlet end of the first electromagnetic valve (25) are communicated with the first oil inlet hole (102).
2. The gearbox lubrication and cooling system according to claim 1, wherein,
Still include first filtration return circuit (4), first filtration return circuit (4) include first filter (41) and third overflow valve (42), first filter (41) with cooler (22) are established ties, the entry end of first filter (41) with the exit end of oil pump (21) communicates, the exit end of first filter (41) with the entry end of cooler (22) communicates, third overflow valve (42) with first filter (41) connects in parallel, the entry end of third overflow valve (42) with the exit end of oil pump (21) communicates, the exit end of third overflow valve (42) with the entry end of cooler (22) communicates, and the exit end of third overflow valve (42) is located between the exit end of first filter (41) and the entry end of cooler (22).
3. The gearbox lubrication and cooling system according to claim 1, wherein,
The gearbox body (1) further comprises a fourth oil inlet (103), a third oil inlet (104), a second oil outlet (105) and a fifth oil inlet (106), wherein the fourth oil inlet (103), the third oil inlet (104) and the fifth oil inlet (106) are positioned on the lower wall surface of the gearbox body (1), the second oil outlet (105) is positioned on the side wall surface of the gearbox body (1), and the second oil outlet (105) is positioned below the gearbox body (1);
Still include idle lubrication circuit (5), idle lubrication circuit (5) include second filter (51), second solenoid valve (52) and idle pump (53), the entry end of second filter (51) with fourth inlet port (103) intercommunication, second solenoid valve (52) are two tee bend solenoid valves, second solenoid valve (52) are equipped with P interface (521), T interface (522) and A interface (523), P interface (521) with the entry end intercommunication of second filter (51), T interface (522) communicate with third inlet port (104), A interface (523) communicate with the first exit end of idle pump (53), the entry end of idle pump (53) with second outlet port (105) intercommunication, the second exit end of idle pump (53) with fifth inlet port (106) intercommunication.
4. A gearbox lubrication and cooling system according to claim 3,
The gearbox body (1) further comprises a sixth oil inlet hole (107), and the sixth oil inlet hole (107) is positioned on the lower wall surface of the gearbox body (1);
The idle lubrication circuit (5) further comprises a fourth overflow valve (54), an inlet end of the fourth overflow valve (54) is communicated with the A interface (523), and an outlet end of the fourth overflow valve (54) is communicated with the sixth oil inlet hole (107).
5. The gearbox lubrication and cooling system according to claim 1, wherein,
The gearbox body (1) further comprises a seventh oil inlet hole (108), the seventh oil inlet hole (108) is arranged on the side wall surface of the gearbox body (1), and the seventh oil inlet hole (108) is located above the first oil outlet hole (101) along the height direction;
still include gassing return circuit (6), gassing return circuit (6) are including first ball valve (61), third filter (62) and first choke valve (63) that establish ties in proper order, the entry end of first ball valve (61) with the exit end of oil pump (21) communicates, the exit end of first choke valve (63) with seventh inlet port (108) intercommunication.
6. The gearbox lubrication and cooling system according to claim 1, wherein,
The gearbox body (1) further comprises an eighth oil inlet hole (109), the eighth oil inlet hole (109) is formed in the upper wall surface of the gearbox body (1), and the eighth oil inlet hole (109) and the first oil inlet hole (102) are arranged at intervals;
Still include second filtration return circuit (7), second filtration return circuit (7) include second ball valve (71), fourth filter (72), second choke valve (73), fifth filter (74) and fifth overflow valve (75), second ball valve (71), fourth filter (72), second choke valve (73), fifth filter (74) establish ties in proper order, the entry end of second ball valve (71) with the exit end of oil pump (21) communicates, the exit end of fifth filter (74) with eighth inlet port (109) intercommunication, fifth overflow valve (75) with the exit end intercommunication of fifth choke valve (73), the exit end of fifth overflow valve (75) with eighth inlet port (109) intercommunication.
7. The gearbox lubrication and cooling system according to any one of claims 1 to 6, wherein,
The external circulation loop further comprises a sixth overflow valve (26), the sixth overflow valve (26) is arranged in parallel with the oil pump (21), the inlet end of the sixth overflow valve (26) is communicated with the first oil outlet (101), and the outlet end of the sixth overflow valve (26) is communicated with the inlet end of the cooler (22).
8. The gearbox lubrication and cooling system according to any one of claims 1 to 6, wherein,
The automatic gearbox further comprises a liquid level detection piece (81), wherein the liquid level detection piece (81) is installed on the gearbox body (1).
9. The gearbox lubrication and cooling system according to any one of claims 1 to 6, wherein,
A heating element (82) is also included, the heating element (82) being mounted on the gearbox.
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| CN202310914279.3A CN116877677B (en) | 2023-07-24 | 2023-07-24 | Gear box lubrication cooling system |
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