Lubricating system of wind power generation gearbox

Abstract

The invention provides a wind power generation gearbox lubricating system, and relates to the technical field of wind power generation, the wind power generation gearbox lubricating system comprises a lubricating oil tank, a lubricating pump module, a precision filtering module, an intelligent temperature control module and a remote monitoring and control module, the remote monitoring and control module comprises a data processing unit, an intelligent control logic and a communication interface, and the intelligent control module is electrically connected with the components, and is used for collecting and analyzing data from the lubricating oil tank, the lubricating pump module, the precision filtering module and the intelligent temperature control module in real time, automatically adjusting system parameters according to intelligent control logic, and realizing seamless joint with a remote operation and maintenance platform through a communication interface. The lubricating efficiency of the wind power generation gear box can be improved, the failure rate is reduced, the service life of the gear box is prolonged, intelligent management and maintenance are achieved, the leakage-proof maintenance-free lubricating system valve block of an integrated structure is adopted, efficient and stable lubricating supply is achieved, and the maintenance cost and the operation risk are effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a wind power generation gearbox lubrication system. Background Art

[0002] As a clean and renewable energy source, the stability and efficiency of wind power generation systems are crucial. In wind power generation systems, gearboxes are key mechanical components, and the effectiveness of their lubrication systems is directly related to the efficiency and life of the entire system. Due to design limitations, traditional lubrication systems have problems such as frequent maintenance and easy leakage. These problems not only increase operation and maintenance costs, but may also cause damage to key components due to insufficient lubrication.

[0003] In wind power generation systems, the gearbox is a key transmission component, and the stability of its lubrication system directly affects the operating efficiency and life of the entire machine. Traditional gearbox lubrication systems mostly use simple circulation lubrication methods, lacking intelligent management and precise control, resulting in poor lubrication effects, frequent gearbox failures, and high maintenance costs; secondly, traditional lubrication systems have problems such as complex on-site installation and easy leakage, especially in harsh natural environments. These problems are particularly prominent. Therefore, it is urgent to design a wind power gearbox lubrication system to solve the above problems. Summary of the invention

[0004] The present invention provides a wind power generation gearbox lubrication system to solve at least one of the problems raised by the above background technology.

[0005] In order to solve the above technical problems, the present invention discloses a wind power generation gearbox lubrication system, comprising:

[0006] The lubricating oil tank is used to store lubricating oil and is equipped with a liquid level monitoring device and an oil quality detection device to monitor the liquid level and quality of the lubricating oil in real time;

[0007] A lubrication pump module, connected to the lubrication oil tank, includes at least one main pump and one backup pump, and intelligently adjusts the pumping pressure and flow rate based on the lubrication demand of the gearbox and the liquid level and oil quality information of the lubrication oil tank;

[0008] The precision filtration module is arranged in the lubricating oil circulation path, and includes a multi-stage filter and an automatic cleaning device, which is used to ensure the cleanliness of the lubricating oil and can automatically trigger the cleaning operation when the filter is clogged;

[0009] An intelligent temperature control module is provided with a first temperature sensor and a temperature control valve, wherein the first temperature sensor is used to obtain the current temperature of the lubricating oil, and the temperature control valve automatically adjusts the temperature of the lubricating oil according to the detection value of the first temperature sensor based on the working temperature requirement of the gearbox to keep it within the optimal working range;

[0010] The remote monitoring and control module includes a data processing unit, intelligent control logic and a communication interface, and is electrically connected to the lubricating oil tank, lubricating pump module, precision filtration module and intelligent temperature control module. It is used to collect and analyze data from the lubricating oil tank, lubricating pump module, precision filtration module and intelligent temperature control module in real time, automatically adjust system parameters according to the intelligent control logic, and achieve seamless connection with the remote operation and maintenance platform through the communication interface.

[0011] Preferably, the lubrication pump module further includes: a pressure sensor and a flow sensor for real-time monitoring of the delivery pressure and flow of the lubricating oil, and intelligently adjusting the output power of the pump according to the lubrication demand of the gearbox and the pressure and flow data.

[0012] Preferably, the multi-stage filter in the precision filtration module includes a coarse filter, a fine filter and a particle monitor. The particle monitor can monitor the particle content in the lubricating oil in real time, and when the particle content exceeds a preset threshold, it automatically triggers the operation of cleaning or replacing the filter element.

[0013] Preferably, the multi-stage filter, the valve block and the mounting plate adopt an integrated structure, and the multi-stage filter, the valve block and the mounting plate are pre-precision machined and assembled and tested to ensure accurate matching and efficient operation between the components.

[0014] Preferably, the intelligent temperature control module also includes a heating element and a cooling device, which are connected to the gear box to heat or cool the lubricating oil in the gear box. When the oil temperature is lower than the preset minimum operating temperature, the heating element starts heating; when the oil temperature is higher than the preset maximum operating temperature, the cooling device starts cooling, and the temperature of the lubricating oil is accurately controlled by adjusting the temperature control valve.

[0015] Preferably, the automatic cleaning device comprises: a box body, an oil storage tank is fixedly installed at the bottom of the box body, an air charging port is embedded in the side wall of the oil storage tank, and a refueling port is provided at the top of the oil storage tank, a pressure gauge and a meter are installed on the top of the oil storage tank, a piston cylinder is fixedly installed on the top of the box body, a high-pressure air pump is fixedly installed on the bottom of the box body, and the air outlet of the high-pressure air pump is connected to the air inlet of the piston cylinder, a piston plate is slidably connected to the inner wall of the piston cylinder, a plurality of through holes are provided on the piston plate, the lower end of the piston rod slides through the top of the piston cylinder and is fixedly connected to the piston plate, a mounting bracket is fixedly installed on the top of the piston rod, two fixing sleeves are symmetrically fixedly installed on the outer side wall of the piston cylinder, the two ends of the bottom of the mounting bracket are slidably connected in the fixing sleeve, and the bottom of the mounting bracket is fixedly connected to the bottom of the fixing sleeve through a spring.

[0016] Preferably, it also includes an oil pressure box, which is fixedly mounted on the inner wall of the box body through a mounting plate, the driving motor is fixedly mounted on the inner wall of the oil pressure box, the cam is fixedly mounted on the output shaft of the driving motor, one end of the connecting rod is hinged on the cam away from the center, and the other end of the connecting rod is hinged with a push plate, both sides of the push plate are slidably connected to the inner wall of the oil pressure box, the oil storage tank is connected to the oil inlet of the oil pressure box through a first oil pipeline, the piston cylinder is connected to the first oil pipeline through a high-pressure air pipe, the reverse flow valve is connected to the first oil pipeline, an oil spray head is arranged on the top of the gear box, the oil spray head is connected to the oil pressure tank through a second oil pipeline, an exhaust port is arranged on the oil spray head, the exhaust valve is embedded in the exhaust port, the oil discharge port of the gear box is connected to the oil storage tank through a return oil pipeline, and a multi-stage filter is connected to the return oil pipeline.

[0017] Preferably, it also includes a lubrication performance detection device, which is used for the wind power generation gearbox lubrication system to detect the working state of the gearbox lubrication, and the lubrication performance detection device includes:

[0018] Speed ​​sensor, used to detect the speed of the gear inside the gearbox;

[0019] A second temperature sensor is used to detect the temperature of the lubricating oil transported in the first oil pipeline;

[0020] Pressure sensor 1, used to detect the pressure at the oil injection head when the gearbox is lubricating;

[0021] Pressure sensor 2, used to detect the pressure inside the gearbox during lubrication operation;

[0022] A controller and an alarm, wherein the controller is electrically connected to a rotation speed sensor, a first temperature sensor, a second temperature sensor, a pressure sensor 1, a pressure sensor 2 and the alarm, and the controller controls the operation of the alarm based on the rotation speed sensor, the first temperature sensor, the second temperature sensor, the pressure sensor 1 and the pressure sensor 2.

[0023] Preferably, the controller controls the alarm to work based on the rotation speed sensor, the first temperature sensor, the second temperature sensor, the first pressure sensor and the second pressure sensor, comprising the following steps:

[0024] Step 1: According to formula (1) and the detection value of the speed sensor, calculate the actual oil stirring loss power ΔP of the gears of the wind power generation gearbox during the meshing process;

[0025]

[0026] Among them, ΔP is the actual oil stirring loss power of the gears of the wind power gearbox during the meshing process, f1 is the gear immersion coefficient in the gearbox, υ is the viscosity of the lubricating oil, n is the speed sensor's detection value of the gear speed inside the gearbox, D is the outer diameter of the gear shaft connected to the gear, ρ is the density of the lubricating oil, B is the tooth width of the gear, and R f is the roughness coefficient of the gear, β is the helix angle of the gear, A is the layout constant of the gear in the gearbox, tan is the tangent function, f2 is the meshing coefficient of the gear in the gearbox, P is the theoretical transmission power of the gearbox, cos is the cosine function, and M is the theoretical meshing mechanical efficiency of the gearbox;

[0027] Step 2: According to the following formula (2) and the detection values ​​of the first temperature sensor, the second temperature sensor, the pressure sensor 1 and the pressure sensor 2, the actual oil supply Q of the wind power gearbox lubrication system when lubricating the gearbox is calculated, and the controller compares the actual oil supply Q of the current wind power gearbox lubrication system when lubricating the gearbox with the preset oil supply range. If the actual oil supply Q of the current wind power gearbox lubrication system when lubricating the gearbox is not within the preset oil supply range, the controller controls the alarm to sound an alarm;

[0028]

[0029] Among them, Q is the actual oil supply of the wind power gearbox lubrication system when lubricating the gearbox, δ is the effective utilization rate of the lubricating oil, C is the specific heat capacity of the lubricating oil, T1 is the detection value of the internal lubricating oil temperature when the first temperature sensor lubricates the gearbox, T2 is the detection value of the temperature of the lubricating oil transported in the first oil pipeline by the temperature sensor 2, λ is the flow coefficient, d is the diameter of the spray hole of the oil spray head, P1 is the detection value of the pressure at the oil spray head when the gearbox is lubricated by the pressure sensor 1, and P2 is the detection value of the pressure inside the gearbox when the pressure sensor 2 is lubricating.

[0030] The wind power generation gearbox lubrication system provided by the present invention has the following beneficial effects compared with the prior art:

[0031] 1. The above-mentioned gearbox lubrication system adopts integrated intelligent sensing technology, precision filtration technology, intelligent temperature control technology and remote monitoring and control technology through the lubricating oil tank, lubrication pump module, precision filtration module, intelligent temperature control module and remote monitoring and control module, realizing comprehensive intelligent management of the wind power gearbox lubrication system, improving lubrication efficiency, reducing failure rate, extending the service life of the gearbox, and realizing the convenience of remote operation and maintenance.

[0032] 2. Secondly, the gearbox lubrication system adopts an integrated leak-proof and maintenance-free lubrication system valve block. By pre-assembling components such as filters, valve blocks, and mounting plates, fast and efficient on-site installation and maintenance are achieved. While achieving efficient and stable lubrication supply, leakage problems caused by improper installation are greatly reduced, the frequency and difficulty of daily maintenance and overhaul are reduced, and maintenance costs and time are reduced. The high sealing performance effectively prevents lubrication system leakage problems caused by improper installation or environmental factors, and improves the stability and reliability of the system.

[0033] 3. The automatic cleaning device is set up to clean the gearbox by utilizing the oil supply and discharge process of the gearbox and the filtered lubricating oil. Impurities such as iron filings in the gearbox are quickly sucked out along with the lubricating oil by negative high pressure, and then the filtered lubricating oil is used to flush the inside of the gearbox in the form of positive high pressure injection, thereby utilizing the original lubricating oil of the gearbox for cleaning without adding any cleaning agent, thus avoiding secondary contamination of the gears and reusing the lubricating oil to achieve resource recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic structural diagram of a wind power generation gearbox lubrication system provided by an embodiment of the present invention;

[0036] Figure 2 A schematic structural diagram of a wind power generation gearbox lubrication system automatic cleaning device connected to a gearbox according to an embodiment of the present invention;

[0037] Figure 3 A schematic diagram of the structure inside a box body of a wind power generation gearbox lubrication system provided by an embodiment of the present invention.

[0038] Reference numerals:

[0039] 1. Automatic cleaning device; 2. Box body; 3. Oil storage tank; 4. Charging port; 5. Refueling port; 6. Pressure gauge; 7. Metering meter; 8. Piston cylinder; 9. High-pressure air pump; 10. Piston plate; 11. Through hole; 12. Piston rod; 13. Mounting bracket; 14. Fixed sleeve; 15. Spring; 16. Oil pressure tank; 17. Mounting plate; 18. Driving motor; 19. Cam; 20. Connecting rod; 21. Push plate; 22. First oil pipeline; 23. High-pressure air pipe; 24. Backflow valve; 25. Gear box; 26. Oil injection head; 27. Second oil pipeline; 28. Exhaust port; 29. ​​Exhaust valve; 30. Oil return pipeline; 31. Multi-stage filter. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The present invention provides the following embodiments

[0042] Example 1

[0043] The embodiment of the present invention provides a wind power generation gearbox lubrication system, such as Figure 1 As shown, including:

[0044] The lubricating oil tank is used to store lubricating oil and is equipped with a liquid level monitoring device and an oil quality detection device to monitor the liquid level and quality of the lubricating oil in real time;

[0045] A lubrication pump module, connected to the lubrication oil tank, includes at least one main pump and one backup pump, and intelligently adjusts the pumping pressure and flow rate based on the lubrication demand of the gearbox and the liquid level and oil quality information of the lubrication oil tank;

[0046] The precision filtration module is arranged in the lubricating oil circulation path, and includes a multi-stage filter and an automatic cleaning device, which is used to ensure the cleanliness of the lubricating oil and can automatically trigger the cleaning operation when the filter is clogged;

[0047] An intelligent temperature control module is provided with a first temperature sensor and a temperature control valve, wherein the first temperature sensor is used to obtain the current temperature of the lubricating oil, and the temperature control valve automatically adjusts the temperature of the lubricating oil according to the detection value of the first temperature sensor based on the working temperature requirement of the gearbox to keep it within the optimal working range;

[0048] The remote monitoring and control module includes a data processing unit, intelligent control logic and a communication interface, and is electrically connected to the lubricating oil tank, lubricating pump module, precision filtration module and intelligent temperature control module. It is used to collect and analyze data from the lubricating oil tank, lubricating pump module, precision filtration module and intelligent temperature control module in real time, automatically adjust system parameters according to the intelligent control logic, and achieve seamless connection with the remote operation and maintenance platform through the communication interface.

[0049] Wherein, preferably, the oil quality detection parameters of the lubricating oil include kinematic viscosity, density, flash point and water content, and the quality of the lubricating oil is determined based on the above oil quality detection parameters.

[0050] Preferably, the lubrication pump module further includes: a pressure sensor and a flow sensor for real-time monitoring of the delivery pressure and flow of the lubricating oil, and intelligently adjusting the output power of the pump according to the lubrication demand of the gearbox and the pressure and flow data.

[0051] Preferably, the multi-stage filter in the precision filtration module includes a coarse filter, a fine filter and a particle monitor. The particle monitor can monitor the particle content in the lubricating oil in real time, and when the particle content exceeds a preset threshold, it automatically triggers the operation of cleaning or replacing the filter element.

[0052] Preferably, the multi-stage filter, the valve block and the mounting plate adopt an integrated structure, and the multi-stage filter, the valve block and the mounting plate are pre-precision machined and assembled and tested to ensure accurate matching and efficient operation between the components.

[0053] Preferably, the intelligent temperature control module also includes a heating element and a cooling device, which are connected to the gear box to heat or cool the lubricating oil in the gear box. When the oil temperature is lower than the preset minimum operating temperature, the heating element starts heating; when the oil temperature is higher than the preset maximum operating temperature, the cooling device starts cooling, and the temperature of the lubricating oil is accurately controlled by adjusting the temperature control valve.

[0054] The working principle and beneficial effects of the above technical solution are:

[0055] A wind power generation gearbox lubrication system of the present invention includes a lubricating oil tank, a lubricating pump module, a precision filtering module, an intelligent temperature control module and a remote monitoring and control module. The remote monitoring and control module includes a data processing unit, an intelligent control logic and a communication interface, and is electrically connected to the above-mentioned components, and is used to collect and analyze data from the lubricating oil tank, the lubricating pump module, the precision filtering module and the intelligent temperature control module in real time, automatically adjust system parameters according to the intelligent control logic, and simultaneously achieve seamless connection with a remote operation and maintenance platform through the communication interface. It adopts integrated intelligent sensing technology, precision filtering technology, intelligent temperature control technology and remote monitoring and control technology, realizes comprehensive intelligent management of the wind power generation gearbox lubrication system, improves lubrication efficiency, reduces failure rate, prolongs the service life of the gearbox, and realizes the convenience of remote operation and maintenance.

[0056] The temperature control valve is a self-acting temperature control valve, which realizes automatic adjustment by using the principle that liquid expands when heated and liquid is incompressible. When the temperature of the controlled medium changes, the volume of the temperature-sensitive liquid in the sensor expands or contracts accordingly. If the temperature of the lubricating oil in the gearbox is higher than the set value, the temperature-sensitive liquid expands, pushing the valve core downward to close the valve, reducing the flow of lubricating oil into the gearbox; when the temperature of the lubricating oil in the gearbox is lower than the set value, the temperature-sensitive liquid contracts, and the reset spring pushes the valve core to open, increasing the flow of lubricating oil into the gearbox.

[0057] Secondly, the multi-stage filter adopts an integrated structure with the valve block and the mounting plate, and the multi-stage filter, valve block and mounting plate are pre-precision processed and assembled and tested to ensure accurate matching and efficient operation between the components; the above-mentioned integrated structure leakage-proof and maintenance-free lubrication system valve block set in the wind power gearbox lubrication system, its core lies in the precise assembly of key components such as the filter, valve block, mounting plate, etc. into one, to achieve efficient and stable lubrication supply, while reducing maintenance costs and operational risks, and can provide a new type of wind turbine inspection and maintenance process, using an integrated leakage-proof and maintenance-free lubrication system valve block, by pre-assembling components such as filters, valve blocks, mounting plates, etc., to achieve fast and efficient on-site installation and maintenance, while greatly reducing leakage problems caused by improper installation. At the same time, the above-mentioned first is to reduce the workload on site: the integrated structural design simplifies the on-site installation process, reduces the skill requirements for installers, and thus reduces the workload of on-site disassembly and installation; second, improve the sealing performance: the high sealing design effectively prevents the leakage of the lubrication system caused by improper installation or environmental factors, and improves the stability and reliability of the system; third, reduce costs: the maintenance-free design reduces the frequency and difficulty of daily maintenance and overhaul, and reduces maintenance costs and time costs. Although the initial investment is relatively high, in the long run, due to the reduction in maintenance needs and the extension of equipment life, the overall cost is actually reduced; fourth, extend equipment life: the continuous and stable lubrication provided by the system can effectively reduce the wear of the gearbox and extend its service life; fifth, improve the level of intelligence: the integrated intelligent monitoring module improves the intelligence level of the system, helps to achieve remote monitoring and fault warning, and improves the overall operation and maintenance efficiency.

[0058] Example 2

[0059] On the basis of Example 1, Figure 2-Figure 3 As shown, the automatic cleaning device 1 includes: a box body 2, an oil storage tank 3 is fixedly installed at the bottom of the box body 2, a charging port 4 is embedded in the side wall of the oil storage tank 3, and a refueling port 5 is provided on the top of the oil storage tank 3, a pressure gauge 6 and a metering gauge 7 are installed on the top of the oil storage tank 3, a piston cylinder 8 is fixedly installed on the top of the box body 2, a high-pressure air pump 9 is fixedly installed at the bottom of the box body 2, and the air outlet of the high-pressure air pump 9 is communicated with the air inlet of the piston cylinder 8, a piston plate 10 is slidably connected to the inner wall of the piston cylinder 8, a plurality of through holes 11 are provided on the piston plate 10, the lower end of the piston rod 12 slides through the top of the piston cylinder 8 and is fixedly connected to the piston plate 10, a mounting bracket 13 is fixedly installed on the top of the piston rod 12, two fixed sleeves 14 are fixedly installed on the outer side wall of the piston cylinder 8 symmetrically, the two ends of the bottom of the mounting bracket 13 are slidably connected in the fixed sleeve 14, and the bottom of the mounting bracket 13 is fixedly connected to the bottom of the fixed sleeve 14 through a spring 15.

[0060] Preferably, it also includes a pressure oil box 16, the pressure oil box 16 is fixedly mounted on the inner wall of the box body 2 through a mounting plate 17, the drive motor 18 is fixedly mounted on the inner wall of the pressure oil box 16, the cam 19 is fixedly mounted on the output shaft of the drive motor 18, one end of the connecting rod 20 is hinged to the cam 19 away from the center, and the other end of the connecting rod 20 is hinged to a push plate 21, and both sides of the push plate 21 are slidably connected to the inner wall of the pressure oil box 16, and the oil storage tank 3 and the oil inlet of the pressure oil box 16 are connected through a first The oil pipeline is connected, the piston cylinder 8 is connected to the first oil pipeline 22 through the high-pressure air pipe 23, the backflow valve 24 is connected to the first oil pipeline 22, and an oil spray head 26 is arranged on the top of the gear box 25. The oil spray head 26 is connected to the pressure oil tank 16 through the second oil pipeline 27. An exhaust port 28 is provided on the oil spray head 26, and an exhaust valve 29 is embedded in the exhaust port 28. The oil discharge port of the gear box 25 is connected to the oil storage tank 3 through the return oil pipeline 30, and the multi-stage filter 31 is connected to the return oil pipeline 30.

[0061] The working principle and beneficial effects of the above technical solution are:

[0062] The automatic cleaning device 1 set up above can complete the filtration of the lubricating oil in the gear box 25 after it is discharged, and transport the lubricating oil to the inside of the gear box 25 by high-pressure injection, so as to realize the cleaning of the inside of the gear box 25. When working, firstly, a certain amount of lubricating oil is added to the oil storage tank 3 through the filling port 5 of the oil storage tank 3, and then the protective gas is introduced at the inflation port 4 to form a high-pressure state in the oil storage tank 3, so that the lubricating oil is transported to the pressure oil tank 16 through the first oil pipeline 22. The pressure gauge 6 and the meter 7 set on the top of the oil storage tank 3 can monitor the pressure of the oil storage tank 3 when transporting the lubricating oil and the flow rate output by the oil storage tank 3 in real time, so as to better judge the amount of lubricating oil in the oil storage tank 3 for timely replenishment; at the same time, the high-pressure air pump 9 fixedly installed at the bottom of the box body 2 works, so that the piston cylinder 8 is filled with high-pressure gas, so that the piston plate 10 It slides up and down along the inner wall of the piston cylinder 8, and the exhaust holes on the piston plate 10 can ensure that the high-pressure gas passes evenly, and then the high-pressure gas is connected to the first oil pipeline 22 through the high-pressure gas pipe 23, so as to provide power for the lubricating oil in the first oil pipeline 22. Secondly, the piston rod 12 fixedly connected to the top of the piston plate 10 drives the mounting bracket 13 to move up and down, and the mounting bracket 13 moves up and down along the fixing sleeve 14 under the action of the spring 15. The elastic force of the spring 15 can provide a buffer for the movement of the piston plate 10 in the piston cylinder 8, which can ensure that the high-pressure gas output from the piston cylinder 8 is more stable and efficient. The reverse flow valve 24 arranged on the first oil pipeline 22 can prevent the lubricating oil delivered to the oil pressure tank 16 from flowing back when cleaning the gear box 25 after pressure is pressed, so as to ensure that the lubricating oil cleans the inside of the gear box 25 in the form of high pressure.

[0063] The drive motor 18 in the oil pressure tank 16 is started to drive the cam 19 fixedly connected to the output shaft of the drive motor 18 to rotate, so that the connecting rod 20 hinged at a position far from the center of the cam 19 rotates along the cam 19, and at the same time, the push plate 21 hinged at one end of the connecting rod 20 slides up and down along the inner wall of the oil pressure tank 16, thereby completing the extrusion of the lubricating oil in the oil pressure tank 16. At this time, the lubricating oil transported to the oil pressure tank 16 through the first oil pipeline 22 realizes intermittent high-pressure output, and then the lubricating oil is transported to the second oil pipeline 27. The oil spray head 26, when the high-pressure head is spraying oil, the exhaust valve 29 is opened, so that the lubricating oil can be sprayed into the interior of the gear box 25 at high pressure, thereby completing the cleaning of the gear box 25 by the lubricating oil. After the cleaning, the lubricating oil is filtered through the multi-stage filter 31, and a part of the lubricating oil is transported to the oil storage tank 3 through the return oil pipe 30 for secondary utilization. The above-mentioned device utilizes pressurization, filtering and rapid conversion to realize the functions of rapid oil discharge, cleaning and refueling in the gear box 25, which can ensure the stable operation of the gear box 25 and effectively extend the service life of the gear box 25.

[0064] Example 3

[0065] On the basis of Embodiment 1 or 2, a lubrication performance detection device is further included, which is used for the wind power generation gearbox lubrication system to detect the working state of the lubrication of the gearbox 25, and the lubrication performance detection device includes:

[0066] A speed sensor, used to detect the speed of the gear inside the gear box 3;

[0067] A second temperature sensor is used to detect the temperature of the lubricating oil transported in the first oil pipeline 22;

[0068] Pressure sensor 1, used to detect the pressure at the oil injection head 26 when the gear box 25 is lubricating;

[0069] Pressure sensor 2, used to detect the pressure inside the gear box 25 during lubrication operation;

[0070] A controller and an alarm, wherein the controller is electrically connected to a rotation speed sensor, a first temperature sensor, a second temperature sensor, a pressure sensor 1, a pressure sensor 2 and the alarm, and the controller controls the operation of the alarm based on the rotation speed sensor, the first temperature sensor, the second temperature sensor, the pressure sensor 1 and the pressure sensor 2.

[0071] Preferably, the controller controls the alarm to work based on the rotation speed sensor, the first temperature sensor, the second temperature sensor, the first pressure sensor and the second pressure sensor, comprising the following steps:

[0072] Step 1: According to formula (1) and the detection value of the speed sensor, the actual oil stirring loss power ΔP of the gears of the wind power generation gearbox 25 during the meshing process is calculated;

[0073]

[0074] Among them, ΔP is the actual oil stirring loss power of the gears of the wind power generation gearbox 25 during the meshing process, f1 is the oil immersion coefficient of the gears in the gearbox 25 (usually 0.9-1.1), and v is the working viscosity of the lubricating oil (in m 2 / s), n is the speed sensor's detection value of the gear speed inside the gear box 25, D is the outer diameter of the gear shaft to which the gear is connected, ρ is the density of the lubricating oil, B is the tooth width of the gear, R f is the roughness coefficient of the gear, β is the helix angle of the gear, A is the arrangement constant of the gear in the gearbox 25, tan is the tangent function, f2 is the meshing coefficient of the gear in the gearbox 25, P is the theoretical transmission power of the gearbox 25 (obtained by looking up the table), cos is the cosine function, and M is the theoretical meshing mechanical efficiency of the gearbox 25;

[0075] Step 2: According to the following formula (2) and the detection values ​​of the first temperature sensor, the second temperature sensor, the pressure sensor 1 and the pressure sensor 2, the actual oil supply amount Q of the wind power gearbox lubrication system when lubricating the gearbox 25 is calculated, and the controller compares the actual oil supply amount Q of the current wind power gearbox lubrication system when lubricating the gearbox 25 with the preset oil supply amount range. If the actual oil supply amount Q of the current wind power gearbox lubrication system when lubricating the gearbox 25 is not within the preset oil supply amount range, the controller controls the alarm to sound an alarm;

[0076]

[0077] Among them, Q is the actual oil supply when the wind power gearbox lubrication system lubricates the gearbox 25, δ is the effective utilization rate of the lubricating oil (refers to the efficiency or proportion of the lubricating oil to play its lubricating, cooling, rust-proof and other functions, obtained by looking up the table), C is the specific heat capacity of the lubricating oil (in J / Kg·℃), T1 is the detection value of the internal lubricating oil temperature when the first temperature sensor lubricates the gearbox 25, T2 is the detection value of the temperature of the lubricating oil transported in the first oil pipeline 22 by the temperature sensor 2, d is the diameter of the spray hole of the oil spray head 26, λ is the flow coefficient (usually 0.08-0.2), P1 is the detection value of the pressure at the oil spray head 26 when the gearbox 25 is lubricated by the pressure sensor 1, and P2 is the detection value of the pressure inside the gearbox 25 when the pressure sensor 2 is lubricating.

[0078] The beneficial effects of the above technical solution are as follows: first, according to formula (1) and the detection value of the speed sensor, the actual oil stirring loss power ΔP of the gear of the wind power generation gearbox during the meshing process is calculated, and by comprehensively considering the gear immersion coefficient of the gear in the gearbox 25, the viscosity of the lubricating oil, the speed of the gear inside the gearbox 25, the outer diameter of the gear shaft connected to the gear, the density of the lubricating oil, the tooth width of the gear, the roughness coefficient of the gear, the helix angle of the gear, the arrangement constant of the gear in the gearbox 25, the meshing coefficient of the gear in the gearbox 25, the theoretical transmission power of the gearbox 25, and the theoretical meshing mechanical efficiency of the gearbox 25, the calculation result is more accurate and reliable.

[0079] Then, according to (2) and the detection values ​​of the first temperature sensor, the second temperature sensor, the pressure sensor 1 and the pressure sensor 2, the actual oil supply Q of the wind power generation gearbox lubrication system when lubricating the gearbox 25 is calculated, and by comprehensively considering the effective utilization rate of the lubricating oil, the specific heat capacity of the lubricating oil, the temperature of the internal lubricating oil of the gearbox 25 during the lubrication operation, the temperature of the lubricating oil transported in the first oil pipeline 22, the flow coefficient, the diameter of the spray hole of the oil spray head 26, the pressure at the oil spray head 26 when the gearbox 25 is lubricating, and the pressure inside the gearbox 25 during the lubrication operation, the calculation result is more accurate and reliable;

[0080] Secondly, the controller controls the alarm based on the speed sensor, the first temperature sensor, the second temperature sensor, the pressure sensor 1 and the pressure sensor 2. If the actual oil supply of the current wind power gearbox lubrication system is not within the preset oil supply range when lubricating the gearbox 25, the controller controls the alarm to sound, thereby reminding the staff to check the automatic cleaning device 1 in time, and perform maintenance on the automatic cleaning device 1 according to the actual inspection results to maintain the use requirements of the wind power gearbox 25 lubrication system for lubrication of the gearbox 25, while ensuring the normal operation of the automatic cleaning device 1 as a whole and maintaining a constant flow rate when lubricating the gearbox 25, meeting the use requirements of the wind power gearbox lubrication system for the reliability and stability of the lubrication of the gearbox 25, and monitoring the working status of the wind power gearbox lubrication system during the lubrication operation in real time, not only the efficiency of the wind power gearbox lubrication system for lubricating the gearbox 25 is improved, but also it is ensured that the wind power gearbox lubrication system can quickly discover and complete maintenance in time after a fault occurs.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind power generation gearbox lubrication system, characterized in that: include: The lubricating oil tank is used to store lubricating oil and is equipped with a liquid level monitoring device and an oil quality detection device to monitor the liquid level and quality of the lubricating oil in real time; A lubrication pump module, connected to the lubrication oil tank, includes at least one main pump and one backup pump, and intelligently adjusts the pumping pressure and flow rate based on the lubrication demand of the gearbox and the liquid level and oil quality information of the lubrication oil tank; A precision filtration module is provided in the lubricating oil circulation path, and includes a multi-stage filter and an automatic cleaning device, which is used to ensure the cleanliness of the lubricating oil and can automatically trigger the cleaning operation when the filter is clogged; An intelligent temperature control module is provided with a first temperature sensor and a temperature control valve, wherein the first temperature sensor is used to obtain the current temperature of the lubricating oil, and the temperature control valve automatically adjusts the temperature of the lubricating oil according to the detection value of the first temperature sensor based on the working temperature requirement of the gearbox to keep it within the optimal working range; The remote monitoring and control module includes a data processing unit, intelligent control logic and a communication interface, and is electrically connected to the lubricating oil tank, lubricating pump module, precision filtration module and intelligent temperature control module. It is used to collect and analyze data from the lubricating oil tank, lubricating pump module, precision filtration module and intelligent temperature control module in real time, automatically adjust system parameters according to the intelligent control logic, and achieve seamless connection with the remote operation and maintenance platform through the communication interface.

2. A wind power generation gearbox lubrication system according to claim 1, characterized in that: The lubrication pump module also includes: a pressure sensor and a flow sensor, which are used to monitor the delivery pressure and flow of the lubricating oil in real time, and intelligently adjust the output power of the pump according to the lubrication demand of the gear box and the pressure and flow data.

3. A wind power generation gearbox lubrication system according to claim 1, characterized in that: The multi-stage filter in the precision filtration module includes a coarse filter, a fine filter and a particle monitor. The particle monitor can monitor the particle content in the lubricating oil in real time. When the particle content exceeds a preset threshold, it automatically triggers the operation of cleaning or replacing the filter element.

4. A wind power generation gearbox lubrication system according to claim 3, characterized in that: The multi-stage filter, valve block and mounting plate adopt an integrated structure, and the multi-stage filter, valve block and mounting plate are pre-precision processed and assembled and tested to ensure accurate matching and efficient operation between the components.

5. A wind power generation gearbox lubrication system according to claim 1, characterized in that: The intelligent temperature control module also includes a heating element and a cooling device, which are connected to the gear box to heat or cool the lubricating oil in the gear box. When the oil temperature is lower than the preset minimum operating temperature, the heating element starts heating; when the oil temperature is higher than the preset maximum operating temperature, the cooling device starts cooling. The temperature of the lubricating oil is accurately controlled by adjusting the temperature control valve.

6. A wind power generation gearbox lubrication system according to claim 1, characterized in that: The automatic cleaning device (1) comprises: a box body (2), an oil storage tank (3) is fixedly installed at the bottom of the box body (2), a charging port (4) is embedded in the side wall of the oil storage tank (3), and a refueling port (5) is provided at the top of the oil storage tank (3), a pressure gauge (6) and a meter (7) are installed at the top of the oil storage tank (3), a piston cylinder (8) is fixedly installed at the top of the box body (2), a high-pressure air pump (9) is fixedly installed at the bottom of the box body (2), and the air outlet of the high-pressure air pump (9) is connected to the air inlet of the piston cylinder (8), and a piston plate (10) is slidably connected to the piston plate (10) at the top of the box body (2). A plurality of through holes (11) are provided on the inner wall of the piston cylinder (8), and the piston plate (10) is provided with a plurality of through holes (11). The lower end of the piston rod (12) slides through the top of the piston cylinder (8) and is fixedly connected to the piston plate (10). A mounting bracket (13) is fixedly installed on the top of the piston rod (12), and two fixing sleeves (14) are fixedly installed on the outer wall of the piston cylinder (8) symmetrically. The two ends of the bottom of the mounting bracket (13) are slidably connected in the fixing sleeve (14), and the bottom of the mounting bracket (13) is fixedly connected to the bottom of the fixing sleeve (14) through a spring (15).

7. A wind power generation gearbox lubrication system according to claim 6, characterized in that: The invention also comprises an oil pressure box (16), wherein the oil pressure box (16) is fixedly mounted on the inner wall of the box body (2) via a mounting plate (17), a driving motor (18) is fixedly mounted on the inner wall of the oil pressure box (16), a cam (19) is fixedly mounted on the output shaft of the driving motor (18), one end of a connecting rod (20) is hinged to a position away from the center of the cam (19), and a push plate (21) is hinged to the other end of the connecting rod (20), and both sides of the push plate (21) are slidably connected to the inner wall of the oil pressure box (16), and the oil storage tank (3) and the oil inlet of the oil pressure box (16) are connected via a first oil pipeline (22). The piston cylinder (8) is connected to the first oil pipeline (22) through a high-pressure air pipe (23), a reverse flow valve (24) is connected to the first oil pipeline (22), an oil spray head (26) is arranged on the top of the gear box (25), the oil spray head (26) is connected to the pressure oil tank (16) through a second oil pipeline (27), an exhaust port (28) is arranged on the oil spray head (26), an exhaust valve (29) is embedded in the exhaust port (28), the oil discharge port of the gear box (25) is connected to the oil storage tank (3) through an oil return pipeline (30), and a multi-stage filter (31) is connected to the oil return pipeline (30).

8. A wind power generation gearbox lubrication system according to claim 1, characterized in that: It also includes a lubrication performance detection device, which is used for the wind power generation gearbox lubrication system to detect the working state of the gearbox (25) lubrication, and the lubrication performance detection device includes: A rotation speed sensor, used to detect the rotation speed of the gear inside the gear box (25); a second temperature sensor, used to detect the temperature of the lubricating oil transported in the first oil pipeline (22); A pressure sensor 1, used for detecting the pressure at the oil injection head (26) when the gear box (25) is lubricating; A second pressure sensor for detecting the pressure inside the gear box (25) during lubrication operation; A controller and an alarm, wherein the controller is electrically connected to a rotation speed sensor, a first temperature sensor, a second temperature sensor, a pressure sensor 1, a pressure sensor 2 and the alarm, and the controller controls the operation of the alarm based on the rotation speed sensor, the first temperature sensor, the second temperature sensor, the pressure sensor 1 and the pressure sensor 2.

9. A wind power generation gearbox lubrication system according to claim 8, characterized in that: The controller controls the alarm to work based on the rotation speed sensor, the first temperature sensor, the second temperature sensor, the first pressure sensor and the second pressure sensor, including the following steps: Step 1: Calculate the actual oil stirring loss power ΔP of the gears of the wind power generation gearbox (25) during the meshing process according to formula (1) and the detection value of the rotation speed sensor; Wherein, ΔP is the actual oil stirring loss power of the gears of the wind power generation gearbox (25) during the meshing process, f1 is the oil immersion coefficient of the gears inside the gearbox (25), υ is the viscosity of the lubricating oil, n is the detection value of the speed sensor for the internal gear speed of the gearbox (25), D is the outer diameter of the gear shaft to which the gear is connected, ρ is the density of the lubricating oil, B is the tooth width of the gear, and R f is the roughness coefficient of the gear, β is the helix angle of the gear, A is the arrangement constant of the gear inside the gearbox (25), tan is the tangent function, f2 is the meshing coefficient of the gear inside the gearbox (25), P is the theoretical transmission power of the gearbox (25), cos is the cosine function, and M is the theoretical meshing mechanical efficiency of the gearbox (25); Step 2: According to the following formula (2) and the detection values ​​of the first temperature sensor, the second temperature sensor, the first pressure sensor and the second pressure sensor, the actual oil supply amount Q of the wind power generation gearbox lubrication system when lubricating the gearbox (25) is calculated, and the controller compares the actual oil supply amount Q of the wind power generation gearbox lubrication system when lubricating the gearbox (25) with a preset oil supply amount range. If the actual oil supply amount Q of the wind power generation gearbox lubrication system when lubricating the gearbox (25) is not within the preset oil supply amount range, the controller controls the alarm to sound an alarm; Wherein, Q is the actual oil supply amount when the wind power generation gearbox lubrication system performs lubrication operation on the gearbox (25), δ is the effective utilization rate of the lubricating oil, C is the specific heat capacity of the lubricating oil, T1 is the detection value of the internal lubricating oil temperature when the first temperature sensor performs lubrication operation on the gearbox (25), T2 is the detection value of the temperature of the lubricating oil transported in the first oil pipeline (22) by the second temperature sensor, λ is the flow coefficient, d is the diameter of the spray hole of the oil spray head, P1 is the detection value of the pressure at the oil spray head (26) when the gearbox (25) performs lubrication operation by the first pressure sensor, and P2 is the detection value of the pressure inside the gearbox (25) when the second pressure sensor performs lubrication operation.

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