阅读说明：本技术 一种系统提高风电机组传动链效率装置的设计方法 (Design method of device for improving efficiency of transmission chain of wind turbine generator system ) 是由 董礼 郭新毅 苏宝定 成和祥 于 2020-04-25 设计创作，主要内容包括：本发明涉及风电机组传动技术领域,尤其是涉及一种系统提高风电机组传动链效率装置的设计方法,包括以下步骤：S1、建立风电机组传动链效率的计算模型：传动效率<Image he="54" wi="90" file="RE-DDA0002540071050000011.GIF" imgContent="drawing" imgFormat="GIF" orientation="portrait" inline="no"></Image><Image he="74" wi="700" file="RE-DDA0002540071050000012.GIF" imgContent="drawing" imgFormat="GIF" orientation="portrait" inline="no"></Image>S2、根据风电机组传动链的实际工况确定计算模型造成风电机组传动效率损耗的主要因素为主轴轴承与主轴承座之间的摩擦导致的损耗以及齿轮箱位置处的损耗；S3、针对造成风电机组传动效率损耗的主要因素确定改进方案,并根据S1步骤中的计算模型对多个改进方案进行分析评估,达到了明显提高风电机组传动链传动效率的效果。(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.)

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.

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.