Method for predicting service life of yaw bearing of wind turbine generator

A yaw bearing and life prediction technology, applied in computer-aided design, geometric CAD, design optimization/simulation, etc., can solve the problem of inaccurate calculation results, inconvenient maintenance of wind turbines, and inability to accurately predict the use of bearings in wind turbines Life and other issues, to achieve the effect of improving the scope of application, facilitating debugging, and facilitating maintenance

Pending Publication Date: 2022-02-08
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a method for predicting the life of the yaw bearing of the wind turbine, which solves the problem that the service life of the bearing of the wind turbine cannot be accurately predicted at present, thus making it inconvenient for the staff to carry out maintenance work on the wind turbine , although calculation predictions are also used, but the calculation results are not accurate enough

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  • Method for predicting service life of yaw bearing of wind turbine generator
  • Method for predicting service life of yaw bearing of wind turbine generator
  • Method for predicting service life of yaw bearing of wind turbine generator

Examples

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Embodiment 1

[0029] A method for predicting the life of a wind turbine yaw bearing, comprising the following steps:

[0030] S1. Establish a geometric model: use 3D modeling software to establish a geometric model when the bearing clearance is 0, then input the parameters of the model material, set the unit size, and mesh the model by sweeping;

[0031] S2. Create contact pairs: establish contact units and target units corresponding to each other on the surface of the three-dimensional model, and use CONTA174 and TARGE170 to simulate contact units and target units respectively to form contact pairs;

[0032] S3. Apply constraints and loads: apply full constraints on the outer surface and two end surfaces of the bearing; apply half of the radial load force and half of the axial load force to all points on the mating surface of the inner ring of the bearing and the main shaft; Bearing rollers are axially constrained; symmetrical constraints are imposed on the inner and outer rings of the bea...

Embodiment 2

[0047] A method for predicting the life of a wind turbine yaw bearing, comprising the following steps:

[0048] S1. Establish a geometric model: use 3D modeling software to establish a geometric model when the bearing clearance is 0, then input the parameters of the model material, set the unit size, and mesh the model by sweeping;

[0049] S2. Create contact pairs: establish contact units and target units corresponding to each other on the surface of the three-dimensional model, and use CONTA174 and TARGE170 to simulate contact units and target units respectively to form contact pairs;

[0050] S3. Apply constraints and loads: apply full constraints on the outer surface and two end surfaces of the bearing; apply half of the radial load force and half of the axial load force to all points on the mating surface of the inner ring of the bearing and the main shaft; Bearing rollers are axially constrained; symmetrical constraints are imposed on the inner and outer rings of the bea...

Embodiment 3

[0065] A method for predicting the life of a wind turbine yaw bearing, comprising the following steps:

[0066] S1. Establish a geometric model: use 3D modeling software to establish a geometric model when the bearing clearance is 0, then input the parameters of the model material, set the unit size, and mesh the model by sweeping;

[0067] S2. Create contact pairs: establish contact units and target units corresponding to each other on the surface of the three-dimensional model, and use CONTA174 and TARGE170 to simulate contact units and target units respectively to form contact pairs;

[0068] S3. Apply constraints and loads: apply full constraints on the outer surface and two end surfaces of the bearing; apply half of the radial load force and half of the axial load force to all points on the mating surface of the inner ring of the bearing and the main shaft; Bearing rollers are axially constrained; symmetrical constraints are imposed on the inner and outer rings of the bea...

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Abstract

A method for predicting the service life of a yaw bearing of a wind turbine generator comprises the following steps: establishing a geometric model, creating a contact pair, applying constraint and load, performing numerical simulation, importing an ANSYS result, setting parameters, calculating the result, establishing the geometric model when the bearing clearance is 0 by using three-dimensional modeling software, inputting the parameters of a model material, setting the unit size, and performing grid division on the model by adopting a sweeping mode. According to the method for predicting the service life of the yaw bearing of the wind turbine generator, the contact stress of the bearing of the wind turbine generator is analyzed and calculated by using ANSYS software through a fatigue life numerical value simulation method, so that the service life of the bearing can be predicted, the prediction accuracy is improved, a worker can conveniently maintain the wind turbine generator, and the influence caused by wind turbine generator faults is reduced.

Description

technical field [0001] The invention relates to the technical field of wind turbines, in particular to a method for predicting the life of a yaw bearing of a wind turbine. Background technique [0002] The wind power generation power supply consists of wind turbines, towers supporting the generators, battery charge controllers, inverters, unloaders, grid-connected controllers, battery packs, etc. The wind turbines include wind rotors, generators; wind rotors It contains blades, hubs, reinforcements, etc.; it has functions such as blades being rotated by the wind to generate electricity, and the head of the generator is rotated. The blades are rotated by the wind to generate electricity, the head of the generator rotates, etc. Wind speed selection: low wind speed wind turbines can effectively improve the wind energy utilization of wind turbines in low wind speed areas. The bearing on the wind turbine is an important part. The blades rotate Fluency depends on the quality of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/23G06F111/10G06F119/04
CPCG06F30/17G06F30/23G06F2119/04G06F2111/10
Inventor 李颖峰韩斌罗涛赵勇张都
Owner XIAN THERMAL POWER RES INST CO LTD
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