CN111550373A - Design method of device for improving efficiency of transmission chain of wind turbine generator system - Google Patents
Design method of device for improving efficiency of transmission chain of wind turbine generator system Download PDFInfo
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- CN111550373A CN111550373A CN202010335979.3A CN202010335979A CN111550373A CN 111550373 A CN111550373 A CN 111550373A CN 202010335979 A CN202010335979 A CN 202010335979A CN 111550373 A CN111550373 A CN 111550373A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 157
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000013461 design Methods 0.000 title claims abstract description 17
- 230000006872 improvement Effects 0.000 claims abstract description 21
- 239000003921 oil Substances 0.000 claims description 168
- 239000010687 lubricating oil Substances 0.000 claims description 52
- 230000008569 process Effects 0.000 claims description 18
- 230000001050 lubricating effect Effects 0.000 claims description 13
- 239000004519 grease Substances 0.000 claims description 12
- 238000005461 lubrication Methods 0.000 claims description 12
- 238000005086 pumping Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 238000001514 detection method Methods 0.000 description 30
- 238000001816 cooling Methods 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000001914 filtration Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D15/00—Transmission of mechanical power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/60—Cooling or heating of wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/70—Bearing or lubricating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0402—Cleaning of lubricants, e.g. filters or magnets
- F16H57/0404—Lubricant filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0405—Monitoring quality of lubricant or hydraulic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0413—Controlled cooling or heating of lubricant; Temperature control therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0436—Pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Quality & Reliability (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention relates to the technical field of wind turbine generator transmission, in particular to a design method of a device for improving the efficiency of a transmission chain of a wind turbine generator, which comprises the following steps: s1, establishing a calculation model of the efficiency of the transmission chain of the wind turbine generator: transmission efficiency
S2, determining the main factors of the wind turbine transmission efficiency loss caused by the calculation model according to the actual working condition of the wind turbine transmission chain, namely loss caused by friction between the main shaft bearing and the main bearing seat and loss at the position of the gear box; s3, determining an improvement scheme aiming at main factors causing the transmission efficiency loss of the wind turbine generator, and analyzing and evaluating the plurality of improvement schemes according to the calculation model in the step S1, so that the effect of obviously improving the transmission efficiency of the wind turbine generator is achieved.
Description
Technical Field
The invention relates to the technical field of wind turbine generator transmission, in particular to a design method of a device for improving the efficiency of a transmission chain of a wind turbine generator system.
Background
At present, a transmission chain of a wind turbine generator comprises six parts, namely a main shaft, a main bearing, a bearing mounting seat, a main frame, a gear box and a high-speed coupler, wherein the high-speed coupler is arranged between the main shaft and the gear box, the main bearing is sleeved on the main shaft and is positioned inside the bearing mounting seat, and the main shaft, the main bearing, the bearing mounting seat, the gear box and the high-speed coupler are all arranged on the main frame.
In the process of transmitting mechanical energy from the blades to the generator by the transmission chain of the wind turbine generator, inevitable efficiency loss is caused by factors such as friction, heating and power consumption inside or among components, and along with the continuous increase of the single-machine generating power of the wind turbine generator and the continuous reduction of the demand on the electricity consumption cost in a large environment, the reduction of the efficiency loss becomes a technical problem which needs to be faced and solved by each manufacturer of the wind turbine generator.
The above prior art solutions have the following drawbacks: in the prior art, the method for improving the transmission efficiency of the wind turbine generator is only based on the consideration of a single component, and manufacturers for producing the main shaft, the main bearing, the bearing mounting seat, the main frame, the gear box and the high-speed coupler strive to improve the transmission efficiency of the single component all the time, but after the transmission chain of the wind turbine generator is assembled, the improvement of the transmission efficiency of the transmission chain of the wind turbine generator is not obvious, and the effect is poor.
Disclosure of Invention
The invention aims to provide a design method of a device for improving the transmission chain efficiency of a wind turbine generator system, and the effect of obviously improving the transmission chain efficiency of the wind turbine generator system is achieved.
The technical purpose of the invention is realized by the following technical scheme:
a design method of a device for improving the efficiency of a transmission chain of a wind turbine generator system comprises the following steps:
s1, establishing a calculation model of the efficiency of the transmission chain of the wind turbine generator:
s2, determining the main factors of the wind turbine transmission efficiency loss caused by the calculation model according to the actual working condition of the wind turbine transmission chain, namely loss caused by friction between the main shaft bearing and the main bearing seat and loss at the position of the gear box;
and S3, determining improvement schemes aiming at main factors causing the transmission efficiency loss of the wind turbine generator, and analyzing and evaluating the improvement schemes according to the calculation model in the step S1.
By adopting the technical scheme, after the calculation model of the transmission efficiency of the wind turbine generator is determined according to the structure of the transmission chain of the wind turbine generator, people can judge that main factors influencing the transmission efficiency of the transmission chain of the wind turbine generator comprise main shaft bearing loss and high-speed coupler loss from the calculation model, so that after a plurality of parts are assembled into the transmission chain of the wind turbine generator, only the improvement scheme of reducing the loss of the transmission chain of the wind turbine generator at the position of the main bearing and the position of the gear box in the operation process is needed to be determined, and the transmission efficiency of the transmission chain of the wind turbine generator can be improved.
The present invention may further be configured in a preferred example, in which the improvement of step S3 includes gradually reducing the amount of lubricating oil inside the gearbox while ensuring the lubrication function of the gearbox, and calculating the transmission efficiency of the drive chain of the wind turbine generator with different amounts of lubricating oil.
Through adopting above-mentioned technical scheme, the in-process of wind turbine generator system driving chain work, the inside gear of gear box can be in the inside rotation of gear box, in order to lubricate the inside gear of gear box, so can add more lubricating oil in the gear box inside, in gear revolve's process like this, the inside lubricating oil of gear box can be mixxed to the gear, lubricating oil has the resistance to the rotation process of gear promptly, so in order to reduce the loss of transmission efficiency in the gear box inside, people need be under the prerequisite of the lubricated effect of assurance gear box, reduce gradually how much of the inside lubricating oil of gear box, calculate the change condition of transmission efficiency according to the calculation model, finally obtain the oil mass of the inside lubricating oil of gear box when wind turbine generator system transmission efficiency is the.
In a preferred example of the present invention, the improvement in step S3 may further include emptying the lubricating oil inside the oil collection tank, disposing the oil collection tank for containing the thin oil on one side of the drive chain of the wind turbine generator, pumping the thin oil inside the oil collection tank into the gear box through the oil supply pump to lubricate the gear box, returning the thin oil lubricated on the gear box into the oil collection tank again, and calculating the drive efficiency of the drive chain of the wind turbine generator at this time according to the calculation model.
By adopting the technical scheme, after lubricating oil in the gear box is emptied, thin oil in the oil collecting tank is conveyed into the gear box by using the oil supply pump to lubricate gears in the gear box, so that transmission efficiency loss caused by oil stirring of the gears in the gear box can be avoided, and the transmission efficiency at the moment is obtained according to a calculation model; and the oil supply pump is used for supplying oil to the gear box, so that the influence of the heat of the thin oil on the performance and the service life of parts such as gears, bearings and sealing elements in the gear box can be reduced.
In a preferred example of the present invention, the improvement in step S3 further includes gradually reducing the amount of grease inside the main bearing seat on the premise of ensuring the lubrication between the main shaft bearing and the main bearing seat, and obtaining the transmission efficiency of the transmission chain of the wind turbine generator system under the condition of different amounts of grease according to the calculation model.
Through adopting above-mentioned technical scheme, the in-process of wind turbine generator system drive chain work, the main shaft can drive main bearing and rotate inside main bearing seat, and the inside lubricating grease of main bearing seat has the resistance to main bearing's rotation process, so under the prerequisite of guaranteeing the lubrication action between main bearing seat and the main bearing seat, reduce the inside lubricating grease of main bearing seat how much, can improve the transmission efficiency of wind turbine generator system drive chain.
The present invention in a preferred example may be further configured that the improvement made in step S3 further includes removing the grease between the main shaft bearing and the main bearing seat, pumping the thin oil inside the oil collecting tank to between the main shaft bearing and the main bearing seat by using an oil supply pump, and then obtaining the transmission efficiency of the transmission chain of the wind turbine at that time according to the calculation model.
Through adopting above-mentioned technical scheme, replace the grease lubrication between main bearing and the main bearing seat for after the thin oil lubrication, the thin oil lubrication can reduce the frictional force between main bearing and the main bearing seat, and the thin oil lubrication can cool off the main bearing moreover, has reached the performance of guaranteeing the main bearing and the life's of main bearing effect.
In a preferred example, the invention can be further configured that the oil supply pump is an oil pump motor, and the transmission efficiency of the transmission chain of the wind turbine generator at the moment is calculated.
By adopting the technical scheme, the power source is needed in the working process of the oil supply pump, the oil pump motor is selected for the oil supply pump, the wind turbine generator set transmission chain is needed for providing electric energy for the oil pump motor when the oil pump motor works, and then the transmission efficiency of the wind turbine generator set transmission chain at the moment is calculated.
In a preferred example, the invention can be further configured that the oil supply pump is a gear pump, the gear pump is driven to work by mechanical energy of the gear pump in the working process of the wind turbine generator, and the transmission efficiency of the wind turbine generator at the moment is calculated.
Through adopting above-mentioned technical scheme, the in-process of wind turbine generator system drive chain work, the inside main shaft of wind turbine generator system drive chain can rotate, chooses for use the fuel feeding pump for the gear pump, at the in-process of wind turbine generator system drive chain work, can drive gear pump work through the mechanical energy of self, just so need not use the electric energy that the wind turbine generator system drive chain sent to drive fuel feeding pump work, then calculates the transmission efficiency of wind turbine generator system drive chain this moment.
In a preferred example, the method can be further configured to obtain the transmission efficiency of the wind turbine generator according to the calculation model at different temperatures of the thin oil, and obtain the temperature of the thin oil at which the transmission efficiency of the wind turbine generator is highest.
By adopting the technical scheme, the thin oil has different physical properties at different temperatures, for example, the viscosity of the thin oil can be influenced by the temperature, the transmission efficiency of the transmission chain of the wind turbine generator at different temperatures can be obtained according to a calculation model while the temperature of the thin oil is changed, and the temperature of the thin oil at the highest transmission efficiency of the wind turbine generator can be obtained according to data.
In summary, the present invention has the following technical effects:
1. by setting a calculation model of the transmission efficiency of the wind turbine generator, people can calculate the transmission efficiency of the transmission chain of the wind turbine generator at any time by using the calculation model, and determine the highest transmission efficiency of the transmission chain of the wind turbine generator under which conditions according to the calculation result;
2. by arranging the device for injecting thin oil into the main bearing, the main bearing seat and the gear box, the main bearing and the main bearing seat are lubricated by the thin oil, and parts in the gear box are also lubricated by the thin oil, so that the transmission efficiency loss of a transmission chain of the wind turbine generator at the position of the main bearing seat and the position of the gear box can be reduced;
3. through having set up the gear pump, the in-process of wind turbine generator system drive chain work can drive the gear pump work, can reduce the motor power consumption like this, reduces wind turbine generator system drive chain self energy loss by a wide margin.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a control flow diagram of the control system of the present invention;
FIG. 3 is a first control flow diagram of the present invention at the sump location;
FIG. 4 is a second control flow diagram of the present invention at the sump location;
FIG. 5 is a flow chart of the control at the spindle position of the present invention;
FIG. 6 is a first control flow diagram of the main bearing housing and the interior of the gearbox of the present invention;
FIG. 7 is a second control flow diagram of the main bearing housing and the interior of the gearbox of the present invention;
FIG. 8 is a third control flow chart of the present invention at the sump location;
FIG. 9 is a control flow diagram at the location of the oil distributor of the present invention;
FIG. 10 is a design flow diagram of the design method of the present invention.
In the figure, 1, main shaft; 2. a main bearing housing; 3. tightening the disc; 4. a gear case; 41. a cooling subsystem; 5. the device systematically promotes the efficiency of the transmission chain of the wind turbine generator; 51. an oil collecting tank; 52. a gear pump; 53. an oil distributor; 54. an oil return pipe; 541. A clean filtration subsystem; 55. an oil inlet pipe; 6. a transmission member; 61. a driving gearwheel; 62. a drive pinion; 7. a control system; 71. a detection member; 711. a first detecting member; 712. a second detecting member; 713. a third detecting member; 714. a fourth detecting member; 715. a fifth detecting member; 716. a sixth detecting member; 717. a seventh detecting member; 72. a control member; 73. a heating member; 74. a first alarm member; 75. a display member; 76. and a second alarm member.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example one
Referring to fig. 1, the invention provides a device for systematically improving the efficiency of a wind turbine generator transmission chain, the wind turbine generator transmission chain comprises a main shaft 1, two main bearing seats 2, a tightening disc 3 and a gear box 4, main bearings are arranged in the two main bearing seats 2, the main bearings are sleeved on the main shaft 1, the tightening disc 3 is used for connecting the main shaft 1 and the gear box 4, and the device 5 for systematically improving the efficiency of the wind turbine generator transmission chain can improve the transmission efficiency of the main bearing seats 2 and the gear box 4.
Referring to fig. 1, the device 5 for systematically improving the efficiency of the transmission chain of the wind turbine generator system includes an oil collecting tank 51, an oil supply pump, an oil distributor 53, an oil inlet pipe 55 and oil return pipes 54, lubricating oil is contained in the oil collecting tank 51, an oil inlet of the oil supply pump is communicated with the inside of the oil collecting tank 51, the other end of the oil distributor is communicated with one end of the oil distributor 53, the other end of the oil distributor 53 is communicated with the insides of two main bearing seats 2 and the inside of a gear box 4 through three oil inlet pipes 55, the number of the oil return pipes 54 is three, and the three oil return pipes 54 are used for communicating the two main bearing seats 2 and the.
When the device 5 for improving the efficiency of the transmission chain of the wind turbine generator system systematically is needed, the oil supply pump is started, the oil supply pump can pump lubricating oil in the oil collecting tank 51 into the oil distributor 53, the oil distributor 53 can control the flow of the lubricating oil in the three oil inlet pipes 55, the lubricating oil can lubricate a main bearing in the main bearing seat 2 or parts in the gear box 4 after entering the main bearing seat 2 or the gear box 4 through the oil inlet pipes 55, the lubricating oil in the oil collecting tank 51 is thin oil, the thin oil can reduce the friction loss of the parts in the main bearing seat 2 and the parts in the gear box 4, and the lubricating oil can have good cooling effects on the parts in the bearing seat and the parts in the gear box 4; finally, the lubricating oil flows back into the oil collecting tank 51 through the oil return pipe 54, the transmission efficiency is mainly determined by the transmission efficiency of the gear box 4 and the main bearing in the working process of the wind turbine transmission chain, the transmission efficiency of the wind turbine transmission chain can be integrally improved by blending the lubricating oil into the two main bearing seats 2 and the inside of one gear box 4, and the service life of the wind turbine transmission chain can be prolonged; when the device 5 for systematically improving the efficiency of the transmission chain of the wind turbine generator is required to be used for different transmission chains of the wind turbine generator, only one end of the oil inlet pipe 55 far away from the oil collecting tank 51 is required to be communicated to a position needing lubrication, so that the device is convenient to use and suitable for all working conditions.
Referring to fig. 1, in order to simplify the device 5 for systematically increasing the efficiency of the transmission chain of the wind turbine generator, and in order to further reduce the power loss of the device 5 for systematically increasing the efficiency of the transmission chain of the wind turbine generator, a transmission member 6 for driving the oil supply pump to work is disposed on the tightening disc 3.
Referring to fig. 1, in the present invention, the fuel supply pump is preferably a gear pump 52, the transmission member 6 includes a large transmission gear 61 coaxially fixed on one side of the tightening disk 3, and the gear pump 52 is provided with a small transmission gear 62 engaged with the large transmission gear 61, so that the gear pump 52 is driven by the large transmission gear 61 and the small transmission gear 62 during the rotation of the tightening disk 3. The transmission part 6 can also adopt transmission modes such as belt transmission, chain transmission or worm and gear transmission.
With reference to fig. 2, a control system 7 is provided on the wind turbine drive train in order to enable a stable operation of the device 5 for systematically increasing the efficiency of the wind turbine drive train.
Referring to fig. 2 and 3, the control system 7 includes a detection part and a control part 72, the control part 72 is coupled with the detection part, the oil distributor 53 is coupled with the control part 72, the detection part includes a first detection part 711, the first detection part 711 includes a pressure sensor and a level gauge, the pressure sensor can detect the detection of the oil pressure of the lubricating oil inside the oil collection tank 51, the level gauge can detect the oil level of the lubricating oil inside the oil collection tank 51, the control part 72 includes a SCADA system for collecting data and a wind turbine main control system, the first detection part 711 outputs a first detection signal after detecting the lubricating oil inside the oil collection tank 51, the SCADA system collates the data inside the first detection signal after receiving the first detection signal and transmits the data to the wind turbine main control system, the wind turbine main control system receives the data and outputs a first control signal after processing the data, the oil distributor 53 changes the flow rate of the lubricating oil inside the oil inlet pipe 55 upon receiving the first control signal.
Referring to fig. 4, the detecting element further includes a second detecting element 712, the second detecting element 712 is a temperature sensor capable of detecting the temperature of the oil in the oil collecting tank 51, the control element 72 is further coupled with a temperature increasing element 73, a first alarm element 74 and a cooling subsystem 41 arranged in the oil collecting tank 51, the temperature increasing element 73 is a heating wire arranged in the oil collecting tank 51, the first alarm element 74 is a buzzer arranged on the drive chain of the wind turbine, and the cooling subsystem 41 is an electric cooler arranged in the oil collecting tank 51. When the temperature of the lubricating oil in the oil collecting tank 51 is too low, the second detection part 712 outputs a second detection signal to the inside of the control part 72, the control part 72 receives the second detection signal and then outputs a second control signal to the inside of the temperature raising part 73 and the inside of the first alarm part 74 or the inside of the cooling subsystem 41, the temperature raising part 73 raises the temperature of the lubricating oil in the oil collecting tank 51 after receiving the second control signal, and the first alarm part 74 starts to alarm until the temperature of the lubricating oil in the oil collecting tank 51 rises to a certain temperature after receiving the second control signal; the cooling subsystem 41 cools the lubricating oil in the oil collection tank 51 after receiving the second control signal.
Referring to fig. 5, the detecting element includes a third detecting element 713, the third detecting element 713 is a rotational speed sensor, the third detecting element 713 is capable of detecting the rotational speed of the spindle 1 and the gear pump 52 and outputting a third detection signal, the control element 72 is further coupled with a display element 75, and the display element 75 is preferably a display. When the rotation speed of the main shaft 1 or the gear pump 52 is abnormal, the third detection part 713 inputs a third detection signal to the control part 72, the control part 72 processes the third detection signal and then inputs a third control signal to the display part 75, and the display part 75 converts the rotation speed of the main shaft 1 and the gear pump 52 into data to be displayed to a worker, so that the worker can monitor the working state of the main shaft 1 and the gear pump 52 in real time.
Referring to fig. 6, the detecting member further includes a fourth detecting member 714, the fourth detecting member 714 is a temperature sensor, and the fourth detecting member 714 can detect the temperature of the bearings inside the two main bearing housings 2 and the temperature of the bearings inside the gear housing 4. When the temperature of the bearing is too high, the fourth detection signal is input into the control element 72 by the fourth detection element 714, the fourth detection signal is processed by the control element 72, then the fourth control signal is input into the display element 75 and the oil distributor 53, the temperature of the bearing is converted into data by the display element 75 after the fourth control signal is received by the oil distributor 53, and the data are presented to an operator, the flow rate and the flow velocity of lubricating oil in the oil inlet pipe 55 are increased after the fourth control signal is received by the oil distributor 53, so that the temperature of the bearing in the main bearing seat 2 and the bearing in the gear box 4 can be reduced, so that the operator can monitor the temperatures of the main bearing seat 2 and the gear box 4 in real time, and the operation stability of the wind turbine generator transmission chain is improved.
Referring to fig. 7, the detecting member further includes a fifth detecting member 715, the fifth detecting member 715 is a flow meter, the fifth detecting member 715 is capable of detecting the flow rates of the lubricating oil in the two main bearing housings 2 and the gear box 4, when an abnormality occurs, the fifth detecting member 715 inputs a fifth detection signal into the control member 72, the control member 72 processes the fifth detection signal and then inputs a fifth control signal into the oil distributor 53, and after receiving the fifth control signal, the oil distributor 53 changes the flow rates of the lubricating oil in the main bearing housings 2 and the gear box 4 by changing the flow rate of the lubricating oil in the oil inlet pipe 55.
Referring to fig. 8, the detecting element further includes a sixth detecting element 716 disposed inside the oil collecting tank 51 for detecting the cleanliness of the lubricating oil and outputting a sixth detection signal, the sixth detecting element 716 is a differential pressure sensor disposed inside the oil collecting tank 51, the control element 72 is coupled to the second warning element 76, the second warning element 76 is a buzzer, the oil return pipe 54 is disposed inside the cleaning filter subsystem 541 for cleaning the lubricating oil, and the cleaning filter subsystem 541 is coupled to the control element 72. When the lubricating oil in the oil collecting tank 51 becomes turbid, the sixth detection element 716 inputs a sixth detection signal into the control element 72, the control element 72 receives the sixth detection signal and then inputs a sixth control signal into the second alarm element 76 and the cleaning and filtering subsystem 541 at the same time, the cleaning and filtering subsystem 541 receives the sixth control signal and then cleans the lubricating oil in the oil return pipe 54, and the second alarm element 76 receives the sixth control signal and then starts to alarm until the cleaning and filtering subsystem 541 finishes cleaning the lubricating oil in the oil return pipe 54.
In the present invention, the cleaning filter subsystem 541 is mainly a filter element disposed inside the oil return pipe 54, and other cleaning filter subsystems 541 having the same effect are still applicable.
Referring to fig. 9, the detecting member further includes a seventh detecting member 717 disposed inside the oil distributor 53, the seventh detecting member 717 including a temperature sensor that can detect an oil temperature of the lubricating oil, a pressure sensor that detects an oil pressure of the lubricating oil, and a flow meter that detects a flow rate of the lubricating oil, the seventh detecting member 717 being coupled with the control member 72. When the oil temperature, the oil pressure, and the flow rate of the lubricating oil in the oil distributor 53 are abnormal, the seventh detection element 717 inputs a seventh detection signal into the control element 72, the control element 72 receives the seventh detection signal and then simultaneously inputs a seventh control signal into the cooling subsystem 41 and the oil distributor 53 or the temperature increasing element 73 and the oil distributor 53, the oil distributor 53 receives the seventh control signal and then changes the flow rate of the lubricating oil in the oil inlet pipe 55, the cooling subsystem 41 receives the seventh control signal and then reduces the temperature of the lubricating oil in the oil collection tank 51, and the temperature increasing element 73 receives the seventh control signal and then increases the temperature of the lubricating oil in the oil collection tank 51.
Example two
Referring to fig. 10, the invention discloses a design method of a device for improving efficiency of a transmission chain of a wind turbine generator system, which comprises the following steps:
s1, establishing a calculation model of the efficiency of the transmission chain of the wind turbine generator:
s2, the actual working condition of the transmission chain of the wind turbine generator is as follows: the main shaft 1 drives the main bearing to rotate in the main bearing seat 2, and the main shaft 1 drives parts in the gear box 4 to rotate together through the high-speed coupler. At the main bearing at the inside pivoted in-process of main bearing seat 2, the frictional force between main bearing and the main bearing seat 2 can cause transmission efficiency's loss, and the inside spare part of gear box 4 is at the inside pivoted in-process of gear box 4, because gear box 4 is inside to contain lubricating oil, so lubricating oil can influence the rotation process of the inside spare part of gear box 4, and then causes transmission efficiency's loss, so the wind turbine generator system drive chain causes the main factor of transmission efficiency loss to be:
1. friction between the main shaft bearing and the main bearing seat (2);
2. resistance of lubricating oil inside the gearbox 2 to parts inside the gearbox 2;
s3, determining an improvement scheme aiming at the main factors causing the transmission efficiency loss of the wind turbine set pointed out in the S2 and evaluating: s31, in order to reduce the loss at the position of the gear box 4, two improvements are adopted:
1. an oil collecting tank 51 is arranged on the outer side of a transmission chain of the wind turbine generator, thin oil is contained in the oil collecting tank 51, and then the thin oil is pumped into the gear box 4 by using an oil supply pump, so that the thin oil can lubricate parts in the gear box 4, and the thin oil lubricated by the parts in the gear box 4 flows back to the oil collecting tank 51, so that excessive lubricating oil cannot exist in the gear box 4, the parts in the gear box 4 cannot be subjected to resistance of the thin oil in the rotating process, the oil stirring loss in the gear box 4 is avoided, the influence of the heat of the thin oil on the performance and the service life of the parts such as gears, bearings and sealing elements is greatly reduced, and the transmission efficiency of the gear box 4 is greatly improved;
2. on the premise of ensuring the lubricating effect of the internal parts of the gear box 4, the amount of lubricating oil in the gear box 4 is gradually reduced, and the transmission efficiency of the wind turbine generator set under the condition that different amounts of lubricating oil are obtained according to the calculation model, so that the resistance of the lubricating oil in the gear box 4 to the rotating process of the internal parts of the gear box 4 is reduced, and the loss of the transmission efficiency at the position of the gear box 4 can be reduced;
experiments prove that the transmission efficiency of the wind turbine generator can be improved by reducing the amount of lubricating oil in the gear box 4, but the transmission efficiency at the moment is always smaller than that of the first method of lubricating the gear box by using the oil collecting tank and the oil supply pump.
S32, in order to reduce the friction between the main bearing and the main bearing housing 2, two improvements are adopted:
1. grease lubrication between the main bearing and the main bearing seat 2 is changed into thin oil lubrication, the thin oil lubrication can reduce the friction loss between the main bearing and the main bearing seat 2, the thin oil has a good cooling effect on the main bearing, and the performance of the bearing and the service life of the bearing are ensured;
2. on the premise of ensuring the lubricating action between the main bearing and the main bearing seat 2, the amount of the lubricating grease in the main bearing seat 2 is reduced to the minimum;
experiments prove that on the premise of ensuring the lubricating effect between the main bearing and the main bearing seat 2, the transmission efficiency of the wind turbine generator can be improved by gradually reducing the amount of lubricating grease, but the transmission efficiency of the first improvement scheme is always higher than that of the second improvement scheme; the influence of the heat of the thin oil on the performance and the service life of parts such as gears, bearings, sealing elements and the like is greatly reduced, and the transmission efficiency of the gear box is greatly improved;
s33, the working mode of the oil supply pump has multiple conditions, one is that the oil supply pump selects an oil pump motor, in the working process of the wind turbine generator transmission chain, electric energy generated by the wind turbine generator transmission chain supplies power to the oil pump motor at the same time, and the transmission efficiency of the wind turbine generator at the moment is calculated according to the calculation model; the gear pump 52 is selected as the other oil supply pump, and in the rotating process of the main shaft 1, the main shaft 1 drives the gear pump 52 to work together through the transmission piece 6, so that electric energy generated when a wind turbine generator transmission chain works is not needed, the energy consumption of a motor is avoided, and the transmission efficiency of the wind turbine generator transmission chain at the moment is obtained according to a calculation model; experiments prove that the transmission efficiency of the transmission chain of the wind turbine generator is higher when the gear pump 52 is selected as the oil supply pump.
S34, in the process of using the thin oil, the temperature of the thin oil can also affect the transmission efficiency of the transmission chain of the wind turbine generator, and people can obtain the transmission efficiency of the wind turbine generator at the adjusting parts of the thin oil at different temperatures according to the calculation model, and obtain the temperature of the thin oil when the transmission efficiency of the wind turbine generator is the highest.
An oil collecting tank 51 for containing thin oil is arranged on one side of a transmission chain of the wind turbine generator, a gear pump 52 is connected to the outer side of the oil collecting tank 51, when the transmission chain of the wind turbine generator works, the main shaft 1 rotates to drive the gear pump 52 to work, the gear pump 52 can pump the thin oil in the oil collecting tank 51 to the main bearing seat 2 and the gear box 4, and therefore abrasion of transmission efficiency at two positions of a main shaft bearing and the gear box 4 is reduced at the same time, reliability is high, fault rate is low, maintainability is strong, and service life is long; the device can be used for land machines and sea machines and has wide application range; in addition, in the process of lubricating the main bearing by using the thin oil, the friction loss is reduced, the lubricating and cooling effects are improved, and the bearing performance and the bearing service life are better ensured; the gear pump 52 is adopted as the oil supply pump, so that the energy consumption of the motor is avoided, and the energy loss of the transmission chain is greatly reduced.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (8)
1. A design method of a device for improving the efficiency of a transmission chain of a wind turbine generator system is characterized by comprising the following steps: the method comprises the following steps:
s1, establishing a calculation model of the efficiency of the transmission chain of the wind turbine generator:
s2, determining the main factors of the wind turbine transmission efficiency loss caused by the calculation model according to the actual working condition of the wind turbine transmission chain, namely loss caused by friction between the main shaft bearing and the main bearing seat (2) and loss at the position of the gear box (4);
and S3, determining improvement schemes aiming at main factors causing the transmission efficiency loss of the wind turbine generator, and analyzing and evaluating the improvement schemes according to the calculation model in the step S1.
2. The design method of the system device for improving the efficiency of the transmission chain of the wind turbine generator according to claim 1 is characterized in that: the improvement of the step S3 comprises gradually reducing the amount of lubricating oil in the gearbox (4) on the premise of ensuring the lubricating effect of the gearbox (4), and calculating the transmission efficiency of the transmission chain of the wind turbine generator under the condition of different amounts of lubricating oil.
3. The design method of the system device for improving the efficiency of the transmission chain of the wind turbine generator according to claim 1 is characterized in that: the improvement scheme in the step S3 includes that lubricating oil in the oil collecting tank (51) is drained, the oil collecting tank (51) used for containing thin oil is arranged on one side of the wind turbine generator transmission chain, then the thin oil in the oil collecting tank (51) is pumped into the gear box (4) through the oil supply pump to lubricate the gear box (4), the thin oil after lubricating the gear box (4) flows back into the oil collecting tank (51) again, and the transmission efficiency of the wind turbine generator transmission chain at the moment is calculated according to a calculation model.
4. The design method of the system device for improving the efficiency of the transmission chain of the wind turbine generator set according to claim 2 is characterized in that: the improvement in step S3 further includes gradually reducing the amount of grease inside the main bearing seat (2) on the premise of ensuring the lubrication between the main shaft bearing and the main bearing seat (2), and obtaining the transmission efficiency of the transmission chain of the wind turbine generator system under the condition of different amounts of grease according to the calculation model.
5. The design method of the system device for improving the efficiency of the transmission chain of the wind turbine generator set according to claim 3 is characterized in that: the improvement made in the step S3 further includes removing the lubricating grease between the main shaft bearing and the main bearing seat (2), pumping the thin oil in the oil collecting tank (51) to a position between the main shaft bearing and the main bearing seat (2) by using an oil supply pump, and then obtaining the transmission efficiency of the transmission chain of the wind turbine generator at the time according to the calculation model.
6. The design method of the system device for improving the efficiency of the transmission chain of the wind turbine generator set according to claim 5 is characterized in that: and the oil supply pump selects an oil pump motor, and the transmission efficiency of the transmission chain of the wind turbine generator at the moment is calculated.
7. The design method of the system device for improving the efficiency of the transmission chain of the wind turbine generator set according to claim 5 is characterized in that: the oil supply pump selects a gear pump (52), the gear pump (52) is driven to work by mechanical energy of the oil supply pump and the wind turbine transmission chain in the working process, and the transmission efficiency of the wind turbine transmission chain at the moment is calculated.
8. The design method of the system device for improving the efficiency of the transmission chain of the wind turbine generator set according to claim 3 is characterized in that: and obtaining the transmission efficiency of the wind turbine generator according to the calculation model at different temperatures of the thin oil, and obtaining the temperature of the thin oil when the transmission efficiency of the wind turbine generator is the highest.
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