Lubricating and cooling system for high-speed gearbox
By designing a lubrication and cooling system that includes components such as a main oil pump, safety valve, and filter, and using compressed air to provide backup lubricating oil, the problem of lubricating oil interruption caused by circulating pump failure is solved, ensuring the normal operation and extended life of the gearbox, and filtering impurities to protect gears and bearings.
Patent Information
- Application Number
- CN202520637413.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-04-07
AI Technical Summary
In existing technologies, once the circulating pump of the lubrication supply system loses power or malfunctions and stops, the output of lubricating oil will be immediately interrupted, resulting in the interruption of lubrication and cooling of gears and bearings, leading to abnormal wear and shortening service life.
A lubrication and cooling system was designed, comprising components such as a main oil pump, safety valve, check valve, filter, heat exchanger, throttle valve, flow sensor, pressure sensor, solenoid valve, spare lubricating oil tank, and air tank. Compressed air is used as a power source to provide spare lubricating oil when the circulating pump fails, and impurities are filtered through a filter screen to ensure the normal operation of the gearbox.
Even in the event of a circulating pump failure, it can still provide sufficient lubricating oil to ensure the cooling and lubrication of the gearbox, extending its service life, and filter impurities through the filter screen to protect the gears and bearings from damage.
Smart Images
Figure CN223768078U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-speed gearbox technology, and in particular to a high-speed gearbox lubrication and cooling system. Background Technology
[0002] Based on the lubrication and cooling requirements of gearbox gears and bearings, a conventional lubrication supply system can provide stable lubricating oil temperature, flow rate / pressure. Specifically, the lubricating oil can be cooled by factory cooling water via a plate heat exchanger, heated by a heater, and its outlet flow rate / pressure can be controlled by a combination of throttle valves, bypass valves, and safety valves.
[0003] However, if the circulating pump in the lubrication supply system loses power or malfunctions and stops, the output of lubricating oil will be interrupted immediately. If the gearbox being cooled is running at high speed at this time, and the shutdown process is relatively long, the lubrication and cooling of the gears and bearings will be interrupted, resulting in abnormal wear of the gears and bearings and shortening their service life.
[0004] Therefore, we propose a novel high-speed gearbox lubrication and cooling system. Utility Model Content
[0005] The purpose of this invention is to solve the problem that in the existing lubrication supply system, once the circulating pump loses power or malfunctions and stops, the output of lubricating oil will be immediately interrupted. If the gearbox being cooled is running at high speed at this time, the shutdown process will be relatively long, which will lead to the interruption of lubrication and cooling of gears and bearings, resulting in abnormal wear of gears and bearings and shortening their service life.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-speed gearbox lubrication and cooling system, comprising a main oil pump, a safety valve connected to one side of the main oil pump, a check valve connected to one side of the safety valve, two sets of filters connected to one side of the check valve, a heat exchanger connected to one side of the filters, a ball valve connected to one side of the heat exchanger, a throttle valve connected to the front end of the heat exchanger, a flow sensor connected to the front end of the throttle valve, a pressure sensor connected to one side of the flow sensor, a pressure gauge connected to the front end of the pressure sensor, a first two-position two-way long-acting solenoid valve connected to the lower end of the pressure gauge, a spare lubricating oil tank connected to one side of the first two-position two-way long-acting solenoid valve, a float-type liquid level sensor inserted inside the spare lubricating oil tank, a second two-position three-way long-acting solenoid valve connected to the front end of the spare lubricating oil tank, a filter assembly connected to one side of the second two-position three-way long-acting solenoid valve, an air storage tank connected to one side of the filter assembly, and a third two-position two-way long-closed solenoid valve connected to one side of the air storage tank.
[0007] Furthermore, a pressure reducing valve is connected to one side of the third two-position two-way continuously closed solenoid valve, and a temperature sensor is connected to one side of the pressure sensor. The third two-position two-way continuously closed solenoid valve and the temperature sensor can ensure the normal operation of the gearbox when the power is not interrupted.
[0008] Furthermore, the filtering assembly includes a filter box, and a filter screen is provided inside the filter box, which can filter impurities in the compressed air.
[0009] Furthermore, a sealing top cover is connected to the top of the filter screen, and bolts are inserted into both sides of the sealing top cover. Rotating the bolts can install the sealing top cover and the filter screen, ensuring a tight seal.
[0010] Furthermore, a flow meter is connected to the rear end of the filter box, and an alarm is connected to the top of the flow meter. The flow meter and the alarm are electrically connected. The flow meter can monitor the air flow in the pipe. When the flow is less than a certain value, it indicates that the filter screen has absorbed a lot of impurities and needs to be cleaned in time.
[0011] Furthermore, the position and size of the bolt match the position and size of the threaded hole on the top of the filter box, and the threaded hole facilitates the fixing of the bolt.
[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0013] 1. In this utility model, through low-cost investment, the circulating pump in the lubrication supply system can still provide sufficient lubricating oil after an unexpected power interruption, ensuring the cooling and lubrication of the gearbox gears and bearings, providing support for the long-term stable operation of the gearbox, and effectively extending the service life of the gearbox.
[0014] 2. In this utility model, when oil is supplied through the gas in the gas storage tank, impurities in the compressed air can be filtered through a filter screen to ensure that impurities do not enter the gearbox and damage the gears and bearings. Attached Figure Description
[0015] Figure 1 This utility model provides a schematic diagram of the connection structure of a high-speed gearbox lubrication and cooling system;
[0016] Figure 2 This utility model provides an exploded structural diagram of the filter box in a high-speed gearbox lubrication and cooling system.
[0017] Legend: 1. Main oil pump; 2. Safety valve; 3. Check valve; 4. Filter; 5. Ball valve; 27. Heat exchanger; 10. Temperature sensor; 11. Throttling valve; 12. Flow sensor; 13. Pressure sensor; 14. Pressure gauge; 15. First two-position two-way long-term solenoid valve; 16. Spare lubricating oil tank; 17. Float-type liquid level sensor; 18. Second two-position three-way long-term solenoid valve; 19. Air tank; 20. Third two-position two-way long-closed solenoid valve; 21. Pressure reducing valve; 22. Filter assembly; 2201. Filter box; 2202. Filter screen; 2203. Sealing top cover; 2204. Bolt; 2205. Flow meter; 2206. Alarm. Detailed Implementation
[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0020] Examples, such as Figure 1 - Figure 2 As shown, this utility model provides a high-speed gearbox lubrication and cooling system, including a main oil pump 1, a safety valve 2 connected to one side of the main oil pump 1, a one-way valve 3 connected to one side of the safety valve 2, two sets of filters 4 connected to one side of the one-way valve 3, a heat exchanger 27 connected to one side of the filters 4, a ball valve 5 connected to one side of the heat exchanger 27, a throttle valve 11 connected to the front end of the heat exchanger 27, a flow sensor 12 connected to the front end of the throttle valve 11, a pressure sensor 13 connected to one side of the flow sensor 12, and a pressure sensor 13 connected to the front end of the pressure sensor 13. Force gauge 14, pressure gauge 14 is connected to a first two-position two-way long-circuit solenoid valve 15 at its lower end, a spare lubricating oil tank 16 is connected to one side of the first two-position two-way long-circuit solenoid valve 15, a float-type liquid level sensor 17 is inserted into the spare lubricating oil tank 16, a second two-position three-way long-circuit solenoid valve 18 is connected to the front end of the spare lubricating oil tank 16, a filter assembly 22 is connected to one side of the second two-position three-way long-circuit solenoid valve 18, an air storage tank 19 is connected to one side of the filter assembly 22, and a third two-position two-way long-closed solenoid valve 20 is connected to one side of the air storage tank 19.
[0021] like Figure 1As shown, a pressure reducing valve 21 is connected to one side of the third two-position two-way continuously closed solenoid valve 20, and a temperature sensor 10 is connected to one side of the pressure sensor 13. The third two-position two-way continuously closed solenoid valve 20 and the temperature sensor 10 can ensure the normal operation of the gearbox when the power is not interrupted.
[0022] like Figure 2 The filter assembly 22 includes a filter box 2201, and a filter screen 2202 is provided inside the filter box 2201. The filter screen 2202 can filter impurities in the compressed air.
[0023] like Figure 2 As shown, a sealing top cover 2203 is connected to the top of the filter screen 2202. Bolts 2204 are inserted into both sides of the sealing top cover 2203. Rotating the bolts 2204 can install the sealing top cover 2203 and the filter screen 2202, ensuring the sealing performance.
[0024] like Figure 1 and Figure 2 As shown, a flow meter 2205 is connected to the rear end of the filter box 2201, and an alarm 2206 is connected to the top of the flow meter 2205. The flow meter 2205 and the alarm 2206 are electrically connected. The flow meter 2205 can monitor the air flow in the pipe. When the flow is less than a certain value, the alarm 2206 will sound automatically, indicating that the filter screen 2202 has absorbed a lot of impurities and needs to be cleaned in time.
[0025] like Figure 1 and Figure 2 As shown, the position and size of bolt 2204 match the position and size of the threaded hole on the top of filter box 2201, and the threaded hole can facilitate the fixing of bolt 2204.
[0026] The overall effect of this embodiment is as follows: During normal operation, the main oil pump 1 draws lubricating oil from the oil tank, which passes through the filter 4 and the cooling plate heat exchanger to lubricate and cool the gearbox bearings and gears. At this time, the backup lubricating oil tank 16 is empty, and the first two-position two-way long-circuit solenoid valve 15 is not energized, allowing lubricating oil to flow into the backup lubricating oil tank 16. Once the float-type liquid level sensor 17 detects a high lubricating oil level, the first two-position two-way long-circuit solenoid valve 15 is closed. Simultaneously, the third two-position two-way long-closed solenoid valve 20 is energized, and factory compressed air enters the air storage tank 19 through the pressure reducing valve 21. The air storage tank 19 is equipped with another set of pressure sensors 13, which can detect whether the air pressure is normal in real time. The second two-position three-way long-circuit solenoid valve 18 is not energized at this time. If the main oil pump 1 malfunctions unexpectedly, the oil supply will be interrupted. The first and second position two-way long-term solenoid valves 15, the second and second position three-way long-term solenoid valves 18, and the third and second position two-way long-term closed solenoid valves 20 are all de-energized. Compressed air in the air tank 19 serves as the power source to push the lubricating oil in the spare lubricating oil tank 16 to the gearbox bearings and gears, ensuring sufficient lubrication and cooling during gearbox shutdown to prevent damage to the bearings and gears. The installed filter screen 2202 can filter impurities in the compressed air. The filter screen 2202 can be removed for cleaning by unscrewing the bolts 2204. The flow meter 2205 can monitor the air flow in the pipeline. When the flow is less than a certain value, the alarm 2206 will automatically sound to remind the operator to clean the filter screen 2202 in time to avoid affecting normal use.
[0027] Working principle: Through low-cost investment, the circulating pump in the lubrication supply system can still provide sufficient lubricating oil after an unexpected power interruption, ensuring the cooling and lubrication of the gearbox gears and bearings, providing support for the long-term stable operation of the gearbox, and effectively extending the service life of the gearbox. When supplying oil through the gas in the air tank 19, impurities in the compressed air can be filtered through the filter screen 2202 to ensure that impurities do not enter the gearbox and damage the gears and bearings.
[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.
Claims
1. A high speed gearbox lubrication cooling system comprising a main oil pump (1), characterized in that: One side of the main oil pump (1) is connected with a safety valve (2), one side of the safety valve (2) is connected with a check valve (3), one side of the check valve (3) is connected with two groups of filters (4), one side of the filter (4) is connected with a heat exchanger (27), one side of the heat exchanger (27) is connected with a ball valve (5), the front end of the heat exchanger (27) is connected with a throttle valve (11), the front end of the throttle valve (11) is connected with a flow sensor (12), one side of the flow sensor (12) is connected with a pressure sensor (13), the front end of the pressure sensor (13) is connected with a pressure gauge (14), the lower end of the pressure gauge (14) is connected with a first two-position two-way long open solenoid valve (15), one side of the first two-position two-way long open solenoid valve (15) is connected with a standby lubricating oil tank (16), the inside of the standby lubricating oil tank (16) is inserted with a float ball liquid level sensor (17), the front end of the standby lubricating oil tank (16) is connected with a second two-position three-way long open solenoid valve (18), one side of the second two-position three-way long open solenoid valve (18) is connected with a filter assembly (22), one side of the filter assembly (22) is connected with a gas storage tank (19), one side of the gas storage tank (19) is connected with a third two-position two-way long closed solenoid valve (20).
2. A high speed gearbox lubrication cooling system according to claim 1, characterized in that: One side of the third two-position two-way long closed solenoid valve (20) is connected with a pressure reducing valve (21), one side of the pressure sensor (13) is connected with a temperature sensor (10).
3. A high speed gearbox lubrication cooling system as claimed in claim 1, wherein: The filter assembly (22) comprises a filter box (2201), and a filter screen (2202) is arranged in the filter box (2201).
4. A high speed gearbox lubrication cooling system according to claim 3, wherein: The top of the filter screen (2202) is connected with a sealing top cover (2203), and bolts (2204) are inserted into the two sides of the sealing top cover (2203).
5. A high speed gearbox lubrication cooling system according to claim 4, characterised in that: The rear end of the filter box (2201) is connected with a flow meter (2205), the top of the flow meter (2205) is connected with an alarm (2206), and the flow meter (2205) and the alarm (2206) are electrically connected.
6. A high speed gearbox lubrication cooling system according to claim 5, wherein: The position and size of the bolt (2204) are matched with the position and size of the threaded hole at the top of the filter box (2201).