Lubricating system of wind power generation gearbox

Abstract

The invention relates to the technical field of wind power generation, and particularly discloses a wind power generation gearbox lubricating system which comprises a gearbox body. A filtering mechanism is installed at the bottom end of the gearbox body, lubricating mechanisms are installed on the upper portions of the outer walls of the two sides of the gearbox body in a penetrating mode, and cooling mechanisms are installed on the outer walls of the two sides of the filtering mechanism. Through cooperative work of the filter box, the magnetic filter cartridge, the cleaning mechanism, the synchronous belt and other parts, the magnetic filter cartridge adsorbs ferromagnetic metal particles in lubricating oil through a magnetic field, damage of impurities generated by metal abrasion to gears and bearings is effectively reduced, and meanwhile, the service life of the gear and the bearings is prolonged. The electrostatic adsorption plate decomposes oxidation products and other non-ferromagnetic small particles in the lubricating oil, further purifies the lubricating oil, prolongs the service life of the oil liquid, and is matched with the self-cleaning mechanism to automatically remove impurities attached to the inner wall of the magnetic filter cartridge, so that the magnetic filter cartridge is prevented from being blocked, the replacement cost is reduced, and the reliability and economical efficiency of the whole lubricating system are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wind power generation, and particularly relates to a wind power generation gear box lubrication system. BACKGROUND

[0002] The wind power generation gear box is a core transmission component in a wind turbine generator unit, and its core function is to convert low-speed and large-torque wind energy captured by a wind wheel into high-speed and small-torque mechanical energy required by a generator, so as to drive the generator to realize efficient power generation. Since there are various friction pairs such as gear meshing, bearing rolling, shaft and sealing sliding in the gear box, direct contact between metal components will cause severe dry friction, resulting in accelerated wear and energy loss. Therefore, a lubrication system must be used to form a stable oil film on the friction surface, so as to convert dry friction between metals into fluid friction. This process not only reduces energy loss and controls operating temperature, but also prevents corrosion and impurities from entering, thereby ensuring long-term stable operation of the gear box.

[0003] In the Chinese patent with the publication number CN218236073U, a wind power generation gear box convenient to maintain is mentioned. A moving rod is installed through the top of the oil filler box, a connecting rod is installed at the bottom end of the moving rod, and multiple through-hole rods are installed at the bottom of the connecting rod. Since lubricating oil is relatively viscous, when adding lubricating oil, the lubricating oil needs to enter the inside of the gear box body through the oil outlet hole to lubricate the internal gear transmission mechanism. However, the general oil outlet hole is very small, and the lubricating oil flows too slowly. At this time, the moving rod can be moved up and down to move the connecting rod and the through-hole rod, and the through-hole rod corresponds to the oil outlet hole. When the lubricating oil flows too slowly, the through-hole rod can be moved inside the oil outlet hole to make the lubricating oil flow more smoothly, thereby providing an oil filling rate. However, the gear box uses lubricating oil for lubrication. During the lubrication process, metal particles generated by wear inside the gear box will accelerate the oxidation of the lubricating oil, thereby forming a vicious cycle. Therefore, the lubricating oil needs to be filtered. However, the traditional filter element is not only easy to block, but also has a high replacement cost, which undoubtedly increases the use cost of the gear box. SUMMARY

[0004] The purpose of the present application is to provide a wind power generation gear box lubrication system to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A wind power generation gear box lubrication system, comprising:

[0007] a gear box body;

[0008] The bottom end of the gear box body is provided with a filtering mechanism, the upper part of the outer wall of the gear box body is provided with a lubricating mechanism, and the outer wall of the filtering mechanism is provided with a cooling mechanism.

[0009] The filtering mechanism comprises a filtering box, a magnetic filter cylinder, a cleaning mechanism, a synchronous belt, a fixing frame, a driver, a flow guide pipe and an electrostatic adsorption plate, the filtering box is installed at the bottom end of the gear box body, the magnetic filter cylinder and the cleaning mechanism are provided with three, the three magnetic filter cylinders are installed between the inner walls of the filtering box, the three cleaning mechanisms are respectively installed in the three magnetic filter cylinders, the synchronous belt is provided with two, and the two synchronous belts are respectively sleeved on the outer surfaces of the adjacent two cleaning mechanisms, the fixing frame is installed at the bottom end of the middle cleaning mechanism, the driver is installed at the bottom end of the fixing frame, the flow guide pipe and the electrostatic adsorption plate are provided with a plurality of, the plurality of flow guide pipes are installed at the top middle part of the filtering box, and the plurality of electrostatic adsorption plates are respectively installed on the top wall and the bottom wall of the filtering box.

[0010] Preferably, one end of the filtering mechanism is provided with a controller, the bottom end of the filtering mechanism is provided with a mounting frame, one side of the gear box body is provided with an output shaft, and the other side of the gear box body is provided with an input shaft.

[0011] Preferably, the torque sensor is installed on the bearing of the gear box body, the temperature sensor is installed in the gear box body, the filtering box and the cooling box, the acceleration sensor is installed on the gear meshing area and the bearing position of the gear box body, the speed sensor is installed on the output shaft and the input shaft, and the controller is electrically connected with the gear box body, the filtering mechanism, the lubricating mechanism and the cooling mechanism.

[0012] Preferably, the cleaning mechanism comprises a sealing cover, a reciprocating screw, a positioning frame, a moving frame, a cleaning brush and a double pulley, the sealing cover is threadedly installed on the lower part of the outer surface of the magnetic filter cylinder, the reciprocating screw is installed in the middle of the bottom inner wall of the sealing cover through a bearing, the positioning frame is installed at the top end of the reciprocating screw through a bearing, the moving frame is installed on the outer surface of the reciprocating screw, the cleaning brush is installed on the outer surface of the moving frame, and the double pulley is installed at the bottom end of the reciprocating screw.

[0013] Preferably, the moving frame is provided in a cross-shaped structure, the outer surface of the cleaning brush is in contact with the inner wall of the magnetic filter cylinder, the top inner wall of the filtering box is provided with a positioning groove matched with the positioning frame, the flow guide pipe is provided in a tapered structure with a narrow upper part and a wide lower part, and the lower part of the outer surface of the flow guide pipe is located in the corresponding magnetic filter cylinder.

[0014] Preferably, the lubricating mechanism comprises a circulating pump, an oil delivery pipe, a distribution pipe, three bearing lubricating pipes and a gear lubricating pipe, the circulating pump is installed at the lower part of the outer wall of the filter box, the oil delivery pipe is installed at the middle part of the outer wall of the circulating pump, the distribution pipe is installed at the other end of the oil delivery pipe, the three bearing lubricating pipes are installed at the bottom end of the distribution pipe, and the gear lubricating pipe is installed on the outer wall of the distribution pipe and located inside the gear box body.

[0015] Preferably, the gear lubricating pipe comprises a fixed pipe, two connecting pipes and a plurality of lubricating nozzles, the two connecting pipes are installed on the outer wall of the fixed pipe, the other ends of the two connecting pipes are installed on the outer wall of the distribution pipe, and the plurality of lubricating nozzles are installed at the bottom end of the fixed pipe.

[0016] Preferably, the connecting pipes and the bearing lubricating pipes are provided with electromagnetic valves, the lubricating nozzles are provided in a multi-angle structure, and the serpentine pipe part of the oil delivery pipe is located inside the cooling box.

[0017] Preferably, the cooling mechanism comprises a cooling box, a liquid inlet pipe, a plurality of heat-conducting fins and a semiconductor refrigeration fin, the cooling box is installed on the outer wall of the filter box, the liquid inlet pipe is installed at the top end of the cooling box, the plurality of heat-conducting fins are installed on the inner wall of one side of the cooling box, and the semiconductor refrigeration fin is installed on the bottom wall of the cooling box.

[0018] Preferably, the cooling box is internally stored with cooling liquid, and the outer surfaces of the rear sides of the plurality of heat-conducting fins are located inside the filter box.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] (1) The filter box, the magnetic filter cartridge, the cleaning mechanism and the synchronous belt and other components work cooperatively, the magnetic filter cartridge uses the magnetic field to adsorb the ferromagnetic metal particles in the lubricating oil, effectively reduces the damage of impurities generated by metal wear to the gear and bearing, at the same time, the electrostatic adsorption plate decomposes the oxidation products and other non-ferromagnetic small particles in the lubricating oil, further purifies the lubricating oil, prolongs the service life of the oil, cooperates with the self-cleaning mechanism to automatically remove the impurities attached to the inner wall of the magnetic filter cartridge, avoids the blockage, reduces the replacement cost, and improves the reliability and economy of the whole lubricating system.

[0021] (2) The application realizes precise lubrication by the cooperative work of the circulating pump, the oil delivery pipe, the shunt pipe, the bearing lubrication pipe and the gear lubrication pipe, the clean lubricating oil filtered by the circulating pump is delivered to the shunt pipe through the oil delivery pipe, and then delivered to the bearing and the gear meshing area through the bearing lubrication pipe and the gear lubrication pipe respectively, so that each lubrication point can obtain appropriate lubricating oil, meanwhile, the controller can predict the lubrication demand in real time based on the sensor monitoring data, and adjust the oil supply amount through the electromagnetic valve, so that precise lubrication is realized.

[0022] (3) The application realizes efficient cooling circulation by the cooperative work of the cooling box, the liquid inlet pipe, the heat conduction sheet and the semiconductor refrigeration sheet, the heat conduction sheet absorbs the heat of the lubricating oil in the filter box, the semiconductor refrigeration sheet further reduces the temperature of the cooling liquid, the circulation can dissipate the heat of the lubricating oil in time to prevent oxidation and deterioration and maintain good lubricating performance in a high-temperature environment, and the lubricating oil can be prevented from being too viscous to ensure its fluidity by adjusting the cooling intensity in a low-temperature environment. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is one of the perspective views of the application;

[0024] Figure 2 It is the second perspective view of the application;

[0025] Figure 3 It is a sectional view of the filtering mechanism of the application;

[0026] Figure 4 It is a perspective view of the cleaning mechanism of the application;

[0027] Figure 5 It is a perspective view of the lubricating mechanism of the application;

[0028] Figure 6 It is a perspective view of the gear lubrication pipe of the application;

[0029] Figure 7 It is a connection diagram of the lubricating mechanism and the cooling mechanism of the application;

[0030] Figure 8 It is a sectional view of the cooling mechanism of the application;

[0031] In the figure: 1, gear box body; 2, filtering mechanism; 3, lubricating mechanism; 4, cooling mechanism; 5, controller; 6, mounting frame; 7, output shaft; 8, input shaft;

[0032] 21, filter box; 22, magnetic filter cylinder; 23, cleaning mechanism; 24, synchronous belt; 25, fixing frame; 26, driver; 27, flow guide pipe; 28, electrostatic adsorption plate;

[0033] 231, sealing cover; 232, reciprocating screw; 233, positioning frame; 234, moving frame; 235, cleaning brush; 236, double pulley.

[0034] 31 circulating pump; 32 oil delivery pipe; 33 oil distribution pipe; 34 bearing lubrication pipe; 35 gear lubrication pipe;

[0035] 351 fixed pipe; 352 connecting pipe; 353 lubrication nozzle;

[0036] 41 cooling box; 42 liquid inlet pipe; 43 heat conduction fin; 44 semiconductor refrigeration fin. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0038] Embodiment one:

[0039] Please refer to Figures 1 to 8 A wind power gear box lubrication system, comprising:

[0040] The gear box body 1;

[0041] The filter mechanism 2 is installed at the bottom end of the gear box body 1, the lubrication mechanism 3 is installed at the upper part of the outer wall on both sides of the gear box body 1, and the cooling mechanism 4 is installed on the outer wall on both sides of the filter mechanism 2.

[0042] The filter mechanism 2 comprises a filter box 21, magnetic filter cylinders 22, cleaning mechanisms 23, synchronous belts 24, fixing frames 25, drivers 26, flow guide pipes 27 and electrostatic adsorption plates 28. The filter box 21 is installed at the bottom end of the gear box body 1. The magnetic filter cylinders 22 and the cleaning mechanisms 23 are provided with three, the three magnetic filter cylinders 22 are installed between the inner walls on both sides of the filter box 21, the three cleaning mechanisms 23 are respectively installed inside the three magnetic filter cylinders 22, the synchronous belts 24 are provided with two, and the two synchronous belts 24 are respectively sleeved on the outer surfaces of the adjacent two cleaning mechanisms 23, the fixing frame 25 is installed at the bottom end of the middle cleaning mechanism 23, the driver 26 is installed at the bottom end of the fixing frame 25, the flow guide pipes 27 and the electrostatic adsorption plates 28 are provided with multiple, the multiple flow guide pipes 27 are installed at the top middle part of the filter box 21, and the multiple electrostatic adsorption plates 28 are respectively installed on the top box wall and the bottom box wall of the filter box 21.

[0043] By Figures 1 to 4It can be known that the controller 5 is installed on the upper end of the filtering mechanism 2, the mounting racks 6 are installed on the bottom end of the filtering mechanism 2, the output shaft 7 is installed on the outer wall of one side of the gear box body 1, and the input shaft 8 is installed on the outer wall of the other side of the gear box body 1.

[0044] The cleaning mechanism 23 comprises a sealing cover 231, a reciprocating screw 232, a positioning frame 233, a moving frame 234, a cleaning brush 235 and a double pulley 236, the sealing cover 231 is threadedly installed on the lower part of the outer surface of the magnetic filter cylinder 22, the reciprocating screw 232 is installed in the middle of the bottom inner wall of the sealing cover 231 through a bearing, the positioning frame 233 is installed on the top end of the reciprocating screw 232 through a bearing, the moving frame 234 is installed on the outer surface of the reciprocating screw 232, the cleaning brush 235 is installed on the outer surface of the moving frame 234, and the double pulley 236 is installed on the bottom end of the reciprocating screw 232.

[0045] As can be known from the above, first, the impure lubricating oil in the gear box body 1 is input into the magnetic filter cylinder 22 of the filtering box 21 through the plurality of flow guide pipes 27, at this time, the magnetic filter cylinder 22 adsorbs the ferromagnetic metal particles in the lubricating oil by using the magnetic principle, effectively reduces the damage of impurities generated by metal wear to gears and bearings, such as iron filings generated by gear and bearing wear, and simultaneously, the driver 26 is started to drive the reciprocating screw 232 to rotate, and through the transmission of the two synchronous belts 24, the reciprocating screws 232 of the three cleaning mechanisms 23 are synchronously rotated, and the moving frame 234 is made to move up and down on the outer surface of the reciprocating screw 232 to drive the cleaning brush 235 to move together to clean the inner wall of the magnetic filter cylinder 22, brush off the impurities adsorbed thereon, and collect the brushed-off impurities in the sealing cover 231. In addition, the electrostatic adsorption plate 28 decomposes the oxidation products and other non-ferromagnetic small particles in the lubricating oil by electrostatic action, further purifies the lubricating oil, prolongs the service life of the oil, and guarantees that the filtering mechanism 2 can continuously provide clean lubricating oil for the lubricating system, avoids the blockage of the magnetic filter cylinder 22, reduces the replacement cost, guarantees the normal operation of the wind power gear box, and improves the reliability and economy of the entire lubricating system.

[0046] Specifically, referring to Figures 1 to 4As shown, the torque sensor is mounted on the bearing of the gearbox body 1, the temperature sensor is mounted in the gearbox body 1, the filter box 21 and the cooling box 41, the acceleration sensor is mounted on the gear meshing area and the bearing position of the gearbox body 1, the speed sensor is mounted on the output shaft 7 and the input shaft 8, and the controller 5 is electrically connected with the gearbox body 1, the filter mechanism 2, the lubricating mechanism 3 and the cooling mechanism 4; the moving frame 234 is provided in a cross structure, the outer surface of the cleaning brush 235 is in contact with the inner wall of the magnetic filter cylinder 22, the positioning groove matched with the positioning frame 233 is formed in the top inner wall of the filter box 21, and the flow guide pipe 27 is provided in a tapered structure with a narrow upper part and a wide lower part, and the outer surface of the flow guide pipe 27 is located in the interior of the corresponding magnetic filter cylinder 22.

[0047] As can be seen from the above, the torque sensor can measure the bearing friction torque to realize the friction coefficient monitoring, the temperature sensor can monitor the temperature of the key components such as gears, bearings, lubricating oil and cooling liquid in real time, the acceleration sensor and the speed sensor can capture the vibration signals caused by the gear meshing abnormality, bearing defects and shaft misalignment, the controller 5 as the control core of the entire lubricating system can receive the signals from various sensors through electrical connection, analyze and process these signals according to the preset program and algorithm, and then send control instructions to the filter mechanism 2, the lubricating mechanism 3 and the cooling mechanism 4; the cross structure of the moving frame 234 is more firm, so that the cleaning brush 235 can effectively remove the impurities and dirt attached to the inner wall of the magnetic filter cylinder 22, the positioning groove can provide accurate positioning and fixing for the positioning frame 233, and the tapered structure of the flow guide pipe 27 with a narrow upper part and a wide lower part can utilize the principle of fluid dynamics to make the lubricating oil flow more smoothly in the flow guide process, reduce the flow resistance, and accurately guide the lubricating oil to the magnetic filter cylinder 22 for filtration.

[0048] Embodiment two:

[0049] Reference Figures 5 to 7 As shown, the lubricating mechanism 3 comprises a circulating pump 31, an oil conveying pipe 32, a shunt pipe 33, three bearing lubricating pipes 34 and a gear lubricating pipe 35, the circulating pump 31 is mounted on the lower part of the outer wall of the filter box 21, the oil conveying pipe 32 is mounted on the middle part of the outer wall of the circulating pump 31, the shunt pipe 33 is mounted on the other end of the oil conveying pipe 32, the three bearing lubricating pipes 34 are arranged on the bottom end of the shunt pipe 33, and the gear lubricating pipe 35 is mounted on the outer wall of the shunt pipe 33 and located in the interior of the gearbox body 1.

[0050] The gear lubrication pipe 35 comprises a fixed pipe 351, two connecting pipes 352 and a plurality of lubrication nozzles 353, the two connecting pipes 352 are both mounted on the outer wall of the fixed pipe 351, and the other ends of the two connecting pipes 352 are both mounted on the outer wall of the distribution pipe 33, and the plurality of lubrication nozzles 353 are all mounted on the bottom end of the fixed pipe 351.

[0051] As can be seen from the above, first, the circulating pump 31 draws the filtered clean lubricating oil from the bottom of the filter box 21, and then delivers it to the distribution pipe 33 through the oil delivery pipe 32, at this time, the bearing lubrication pipe 34 supplies oil to the bearing raceway in the gear box body 1 through an independent channel, and the lubricating oil in the gear lubrication pipe 35 is atomized and sprayed to the gear meshing area through a plurality of multi-angle lubrication nozzles 353, so that the lubricating oil can uniformly cover the lubricating parts, improve the lubrication effect, reduce wear and tear, and prolong the service life of the gear box body 1, and during the operation, the torque sensor mounted on the bearing of the gear box body 1 monitors the friction torque in real time, the acceleration sensor installed at the gear meshing area and the bearing position captures abnormal vibration signals, and the speed sensor on the output shaft 7 and the input shaft 8 feeds back the rotating speed data, all the signals are transmitted to the controller 5, the controller 5 combines the sensor monitoring data, dynamically adjusts the opening degree of the electromagnetic valve on the connecting pipe 352 and the bearing lubrication pipe 34 through the AI algorithm, realizes on-demand oil supply, when the gear meshing frequency is detected to be abnormal, the oil supply amount of the gear lubrication pipe 35 is increased, when the bearing temperature is too high, the corresponding bearing lubrication pipe 34 is preferentially supplied with oil, in addition, the serpentine section of the oil delivery pipe 32 is located in the cooling box 41, so that the lubricating oil is cooled before entering the gear box body 1, further optimizing the lubrication effect.

[0052] Preferably, as shown in Figures 5 to 7 The connecting pipe 352 and the bearing lubrication pipe 34 are both provided with an electromagnetic valve, the lubrication nozzle 353 is provided in a multi-angle structure, and the serpentine pipe section of the oil delivery pipe 32 is located inside the cooling box 41.

[0053] As can be seen from the above, the electromagnetic valve can accurately control the flow and cut-off of the lubricating oil according to the instructions of the controller 5, realize flexible control of the lubricating oil supply, the lubrication nozzle 353 in a multi-angle structure can spray the lubricating oil to the gears and bearings and other components inside the gear box body 1 at different angles, so that the lubricating oil can be more uniformly covered on the lubricating parts, improve the lubrication effect, increase the contact area and contact time of the lubricating oil and the cooling liquid, and make the lubricating oil fully cooled during the flow process, reduce the temperature of the lubricating oil.

[0054] Example Three:

[0055] Referring to Figure 7 and Figure 8As shown in the figure, the cooling mechanism 4 comprises a cooling box 41, a liquid inlet pipe 42, a plurality of heat-conducting sheets 43 and a semiconductor refrigeration sheet 44. The cooling box 41 is installed on the outer wall of the filter box 21. The liquid inlet pipe 42 is installed on the top end side of the cooling box 41. The plurality of heat-conducting sheets 43 are installed on the inner wall of one side of the cooling box 41. The semiconductor refrigeration sheet 44 is installed on the bottom box wall of the cooling box 41.

[0056] As can be seen from the above, when the lubricating oil flows in the filter box 21, the heat in the lubricating oil is transferred to the heat-conducting sheets 43, so that the heat is conducted from the filter box 21 to the cooling liquid in the cooling box 41. When the lubricating oil flows in the oil conveying pipe 32, the serpentine pipe of the oil conveying pipe 32 is immersed in the cooling liquid, so that the lubricating oil can be cooled and exchanged with the cooling liquid again, the heat transfer and dissipation are accelerated, the heat of the lubricating oil can be effectively absorbed, the temperature of the lubricating oil is reduced, the oxidation and deterioration of the lubricating oil are prevented, and the lubricating performance is maintained. The semiconductor refrigeration sheet 44 can further cool the cooling liquid in the cooling box 41, continuously reduce the temperature of the cooling liquid, and keep the cooling liquid at a low temperature. In a high-temperature environment, the controller 5 controls the cooling mechanism 4 to timely dissipate the heat of the lubricating oil. In a low-temperature environment, the controller 5 adjusts the cooling strength of the semiconductor refrigeration sheet 44 to prevent the lubricating oil from being too viscous, ensure the flowability of the lubricating oil, form an effective oil film on the surface of the component, reduce the wear and starting resistance, ensure the lubricating system to operate at an appropriate temperature, prevent the lubricating oil performance from being degraded and the component corrosion from being aggravated due to high temperature, and improve the stability and reliability of the entire wind turbine gearbox lubricating system.

[0057] Preferably, as shown in the figure, Figure 7 and Figure 8 As shown in the figure, the cooling box 41 stores the cooling liquid, and the outer surfaces of the plurality of heat-conducting sheets 43 are located in the interior of the filter box 21.

[0058] As can be seen from the above, the cooling liquid is the cooling medium of the cooling system, which can absorb the heat transferred from the lubricating oil through circulation, transfer and dissipate the heat, reduce the temperature of the lubricating oil, and ensure the lubricating system to operate at an appropriate temperature. The heat-conducting sheets 43 can conduct the heat in the filter box 21 to the cooling box 41, accelerate the heat transfer and dissipation, and improve the cooling efficiency.

[0059] Application example:

[0060] The design is applied to various complex environments, in offshore wind farms, facing seawater strong corrosion, high air humidity and high salt content of the harsh conditions, the system through the filter mechanism 2 effectively filter the impurities in the lubricating oil, reduce the wear of gear and bearing, cooling mechanism 4 is automatically adjusted according to the environment lubricating oil temperature, prevent high temperature caused by lubricating oil performance decline and parts corrosion intensified, automatic cleaning function guarantee filter mechanism 2 long-term stable operation, greatly reduced the maintenance cost and difficulty of offshore, improve the reliability and power generation efficiency of wind turbine generator, prolong the service life of equipment; for land plateau wind farms, large temperature difference between day and night, temperature changes dramatically, cooling mechanism 4 can adapt to temperature changes, high temperature when cooling, reduce cooling when low temperature, ensure the lubricating oil flowability, provide effective lubrication for gear and bearing, filter mechanism 2 can filter the impurities generated by temperature difference, ensure the stable operation of equipment in various working conditions, improve the stability and reliability of power generation; in land coastal wind farms, salt spray corrosion problem is prominent, the cooperation of the filter and cooling of this lubricating system, maintain the cleanliness and appropriate temperature of lubricating oil, reduce the corrosion of salt spray on the parts, automatic cleaning function can remove the filter impurities in time, prevent the decline of filtering effect and equipment failure, reduce the maintenance cost, improve the economic benefit of wind farm; in high temperature environment, cooling mechanism 4 can dissipate the heat of lubricating oil in time, prevent its oxidation deterioration, maintain good lubricating performance, reduce the wear of gear and bearing, improve the efficiency of equipment, reduce the failure and downtime caused by high temperature.

[0061] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.

Claims

1. A wind power generation gearbox lubrication system, characterized in that: include: Gear box body (1); A filtering mechanism (2) is installed at the bottom end of the gear box body (1), lubricating mechanisms (3) are inserted and installed on the upper parts of the outer walls on both sides of the gear box body (1), and cooling mechanisms (4) are installed on the outer walls on both sides of the filtering mechanism (2); The filtering mechanism (2) comprises a filtering box (21), a magnetic filtering cartridge (22), a cleaning mechanism (23), a synchronous belt (24), a fixing frame (25), a driver (26), a flow guide pipe (27) and an electrostatic adsorption plate (28). The filtering box (21) is mounted at the bottom end of the gear box body (1). Three magnetic filtering cartridges (22) and three cleaning mechanisms (23) are provided. The three magnetic filtering cartridges (22) are mounted between the inner walls of both sides of the filtering box (21). The three cleaning mechanisms (23) are respectively mounted on the three magnetic filtering cartridges (22). ), two synchronous belts (24) are provided, and the two synchronous belts (24) are respectively sleeved on the outer surfaces of two adjacent cleaning mechanisms (23), the fixing frame (25) is installed at the bottom end of the middle cleaning mechanism (23), the driver (26) is installed at the bottom end of the fixing frame (25), and a plurality of the guide pipes (27) and the electrostatic adsorption plates (28) are provided, and the plurality of the guide pipes (27) are installed at the middle of the top end of the filter box (21), and the plurality of the electrostatic adsorption plates (28) are respectively installed on both sides of the top box wall and the bottom box wall of the filter box (21).

2. A wind power generation gearbox lubrication system according to claim 1, characterized in that: A controller (5) is installed on the upper portion of one end of the filter mechanism (2), mounting brackets (6) are installed on both sides of the bottom end of the filter mechanism (2), an output shaft (7) is installed on the outer wall of one side of the gear box body (1), and an input shaft (8) is installed on the outer wall of the other side of the gear box body (1).

3. A wind power generation gearbox lubrication system according to claim 2, characterized in that: A torque sensor is installed on the bearing of the gearbox body (1); temperature sensors are installed inside the gearbox body (1), the filter box (21) and the cooling box (41); acceleration sensors are installed in the gear meshing area and bearing positions of the gearbox body (1); speed sensors are installed on the output shaft (7) and the input shaft (8); and the controller (5) is electrically connected to the gearbox body (1), the filter mechanism (2), the lubrication mechanism (3) and the cooling mechanism (4).

4. The wind power generation gearbox lubrication system according to claim 1, characterized in that: The cleaning mechanism (23) comprises a sealing cover (231), a reciprocating screw (232), a positioning frame (233), a movable frame (234), a cleaning brush (235) and a double pulley (236); the sealing cover (231) is threadedly mounted on the lower portion of the outer surface of the magnetic filter cartridge (22); the reciprocating screw (232) is mounted on the middle portion of the bottom inner wall of the sealing cover (231) via a bearing; the positioning frame (233) is mounted on the top end of the reciprocating screw (232) via a bearing; the movable frame (234) is mounted on the outer surface of the reciprocating screw (232); the cleaning brush (235) is mounted on the outer surface of the movable frame (234); and the double pulley (236) is mounted on the bottom end of the reciprocating screw (232).

5. The wind power generation gearbox lubrication system according to claim 4, characterized in that: The movable frame (234) is configured as a cross-shaped structure, the outer surface of the cleaning brush (235) contacts the inner wall of the magnetic filter cartridge (22), a positioning groove matching the positioning frame (233) is provided on the top inner wall of the filter box (21), and the guide tube (27) is configured as a tapered structure that is narrow at the top and wide at the bottom, and the lower portion of the outer surface of the guide tube (27) is located inside the corresponding magnetic filter cartridge (22).

6. The wind power generation gearbox lubrication system according to claim 1, characterized in that: The lubricating mechanism (3) comprises a circulating pump (31), an oil delivery pipe (32), a diverter pipe (33), a bearing lubrication pipe (34) and a gear lubrication pipe (35); the circulating pump (31) is mounted on the lower portion of the outer wall of the filter box (21); the oil delivery pipe (32) is mounted on the middle portion of the outer wall of the circulating pump (31); the diverter pipe (33) is mounted on the other end of the oil delivery pipe (32); three bearing lubrication pipes (34) are provided, and the three bearing lubrication pipes (34) are all mounted on the bottom end of the diverter pipe (33); the gear lubrication pipe (35) is mounted on the outer wall of the diverter pipe (33), and the gear lubrication pipe (35) is located inside the gear box body (1).

7. A wind power generation gearbox lubrication system according to claim 6, characterized in that: The gear lubrication pipe (35) comprises a fixed pipe (351), a connecting pipe (352) and a lubrication nozzle (353). Two connecting pipes (352) are provided, and both connecting pipes (352) are installed on the outer wall of the fixed pipe (351). The other ends of the two connecting pipes (352) are installed on the outer wall of the diversion pipe (33). A plurality of lubrication nozzles (353) are provided, and the plurality of lubrication nozzles (353) are installed at the bottom end of the fixed pipe (351).

8. The wind power generation gearbox lubrication system according to claim 7, characterized in that: The connecting pipe (352) and the bearing lubrication pipe (34) are both provided with electromagnetic valves, the lubrication nozzle (353) is configured as a multi-angle structure, and the serpentine pipe portion of the oil delivery pipe (32) is located inside the cooling box (41).

9. The wind power generation gearbox lubrication system according to claim 1, characterized in that: The cooling mechanism (4) comprises a cooling box (41), a liquid inlet pipe (42), a heat conducting plate (43) and a semiconductor cooling plate (44); the cooling box (41) is mounted on the outer wall of the filter box (21); the liquid inlet pipe (42) is mounted on the top side of the cooling box (41); a plurality of heat conducting plates (43) are provided, and the plurality of heat conducting plates (43) are all mounted on one inner wall of the cooling box (41); and the semiconductor cooling plate (44) is mounted on the bottom box wall of the cooling box (41).

10. A wind power generation gearbox lubrication system according to claim 9, characterized in that: Cooling liquid is stored inside the cooling box (41), and the rear sides of the outer surfaces of the plurality of heat conducting sheets (43) are all located inside the filter box (21).

Images