CN204535991U - A kind of wind turbine gearbox non-torque load dynamic loading device - Google Patents
A kind of wind turbine gearbox non-torque load dynamic loading device Download PDFInfo
- Publication number
- CN204535991U CN204535991U CN201520270430.5U CN201520270430U CN204535991U CN 204535991 U CN204535991 U CN 204535991U CN 201520270430 U CN201520270430 U CN 201520270430U CN 204535991 U CN204535991 U CN 204535991U
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- loading disc
- oil cylinders
- wind
- wind turbine
- turbine gearbox
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Abstract
The utility model discloses a kind of wind turbine gearbox non-torque load dynamic loading device, it is characterized in that: comprise main shaft and loading disc, described loading disc is fixedly mounted on main shaft, loading disc and rotating shaft coaxial, the end face of loading disc is provided with three axial hydraulic oil cylinders, the side of described loading disc is provided with two hydraulic radial oil cylinders, and the phase differential of two hydraulic radial oil cylinders is 90 °.The utility model is that the wind turbine gearbox mechanical environment that Reality simulation wind carries driving provides technical support, be conducive to grasping typical wind and carry the distribution of operating mode lower tooth roller box critical component real load, be conducive to ensureing that gear box designs can meet the request for utilization of long-life, high reliability.
Description
Technical field
The utility model belongs to technical field of wind power, particularly relates to a kind of wind turbine gearbox non-torque load dynamic loading device.
Background technology
Gear case is the vitals connecting impeller and generator in double-fed fan motor unit, for transferring energy with bear the core component that wind carries.US and European related research institutes statistical data shows: gear case is one of parts that Wind turbines failure rate is the highest, and the downtime caused is the longest.Gear case premature failure seriously governs the healthy and rapid development of world's Wind Power Generation Industry.Gear case premature failure makes to meet requirement in serviceable life in 20 year, often 3-5 just needs repairing even overhaul, within 6 ~ 8 years, will change, corresponding maintenance cost and economic loss, up to 20 ~ 500,000 Euros (relevant with wind field position with blower fan size), account for 38% of Wind turbines total cost.The design of China's wind turbine gearbox lags far behind Wind Power Generation Industry development; mostly that the simple of external product is copied; do not consider the singularity of domestic wind regime and weather; lack infrastest data; gear case often runs less than 3 years and shuts down overhaul; high maintenance cost and shutdown loss bring huge challenge to the survival and development of wind-powered electricity generation enterprise, bring powerful impact also to the sound development of China's Wind Power Generation Industry.
The non-torque load producing all the other five degree of freedom except the generation torque load, is also passed to gear case, brings additional displacement and dynamic response to the critical component of gear case by the lower impeller of the wind effect of carrying.Current critical component real load is difficult to accurate estimation, meets although this is also gear box designs or exceedes existing international wind-powered electricity generation industry standard IEC61400, ISO280, the major reason that its failure rate still remains high.Therefore, the simulation true mechanical state of gear case complicated wind carries under, obtains critical component practical load distribution by experiment, significant for ensureing gear case long-life, high reliability.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of wind turbine gearbox non-torque load dynamic loading device can simulating the true mechanical state of gear case under complicated wind carries, and it is significant for guarantee gear case long-life, high reliability.
The utility model solve the problem adopt technical scheme be: a kind of wind turbine gearbox non-torque load dynamic loading device, comprise main shaft and loading disc, described loading disc is fixedly mounted on main shaft, loading disc and rotating shaft coaxial, the end face of loading disc is provided with three axial hydraulic oil cylinders, the side of described loading disc is provided with two hydraulic radial oil cylinders, and the phase differential of two hydraulic radial oil cylinders is 90 °.
In above-mentioned wind turbine gearbox non-torque load dynamic loading device, three axial hydraulic oil cylinders on described loading disc end face are circumferentially uniformly distributed.
Compared with prior art, the beneficial effects of the utility model are:
When the utility model uses, the two ends distribution of main shaft is connected with the input shaft of drive unit and bearing housing, and the output shaft of bearing housing is connected with generator; The five degree of freedom non-torque load of loading disc is applied to by three axial hydraulic oil cylinders and two hydraulic radial oil cylinders, and by dynamic changes process to gear case, sensor mounting location is reserved in gear case critical component position, measures in order to the dynamic response realized under the wind effect of carrying; The utility model is that the wind turbine gearbox mechanical environment that Reality simulation wind carries driving provides technical support, be conducive to grasping typical wind and carry the distribution of operating mode lower tooth roller box critical component real load, be conducive to ensureing that gear box designs can meet the request for utilization of long-life, high reliability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that true wind of the present utility model carries simulation system process flow diagram.
Fig. 3 is the structured flowchart of the utility model when being applied to wind turbine gearbox experiment table.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, the utility model comprises main shaft 1 and loading disc 2, described loading disc 2 is fixedly mounted on main shaft 1, loading disc 2 and main shaft 1 coaxial, the end face of loading disc 2 is hinged with three axial hydraulic oil cylinders 4, three described axial hydraulic oil cylinders 4 are circumferentially uniformly distributed on the end face of loading disc 2.The phase differential that the side of described loading disc 2 is provided with two hydraulic radial oil cylinders, 3, two hydraulic radial oil cylinders 3 is 90 °.
Below for the utility model is for building the process of 20kW wind turbine gearbox experiment table.
As shown in Figure 2,3, first the two ends of main shaft 1 are distinguished the input shaft of connecting drive device and gear case, the output shaft of gear case is connected generator.Drive unit is variable frequency drive motors, and variable frequency drive motors rated power is less than 40 kilowatts, and setting range is 10 ~ 30rpm.Described gear case is third-level planetary helical teeth train, and version is identical with high-power wind turbine unit, and ratio of gear is not less than 80.Generator rating power is 20kW, rated speed 1500rpm; Simulation pylon height about 1m, unit becomes 5 ° of inclination angles to be fixed on pylon with surface level.Key components and parts reserves sensor mounting location, facilitate mount stress strain, displacement and acceleration transducer, can to parameter testings such as the displacement of the key components and parts such as gear, bearing, strain, vibration, noises, for dynamics, fault diagnosis and tired operational monitoring and Research on Intelligent Diagnosis provide believable experimental data.
Then the different operating mode performance load simulation of Wind turbines is realized, the wind rating of blower fan used, incision wind speed, cut-out wind speed and Limit of Wind Speed are respectively 9m/s, 2m/s, 23m/s, 60m/s, the running status of simulation Wind turbines under startup, low speed, the state such as specified, safe, instantaneous; During simulation, by 3 axial hydraulic oil cylinders 4 of the present utility model, realize axial plane 3DOF load F
x, M
y, M
zapplying; 2DOF load F in sagittal plane is realized by 2 hydraulic radial oil cylinders 3
y, F
zapplying.Hydraulic jack realizes closed-loop control by force snesor and servo-valve, axial loading range 3 ~ 10KN, radial loaded scope 1 ~ 4KN, frequency range 0.3 ~ 2Hz.Hydraulic power unit provides high pressure fuel source for load applying, is loaded on loading disc by the output of oil cylinder power.
The utility model is that the wind turbine gearbox mechanical environment that Reality simulation wind carries driving provides technical support, be conducive to grasping typical wind and carry the distribution of operating mode lower tooth roller box critical component real load, be conducive to ensureing that gear box designs can meet the request for utilization of long-life, high reliability.
Claims (2)
1. a wind turbine gearbox non-torque load dynamic loading device, it is characterized in that: comprise main shaft and loading disc, described loading disc is fixedly mounted on main shaft, loading disc and rotating shaft coaxial, the end face of loading disc is provided with three axial hydraulic oil cylinders, the side of described loading disc is provided with two hydraulic radial oil cylinders, and the phase differential of two hydraulic radial oil cylinders is 90 °.
2. wind turbine gearbox non-torque load dynamic loading device according to claim 1, is characterized in that: three axial hydraulic oil cylinders on described loading disc end face are circumferentially uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520270430.5U CN204535991U (en) | 2015-04-29 | 2015-04-29 | A kind of wind turbine gearbox non-torque load dynamic loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520270430.5U CN204535991U (en) | 2015-04-29 | 2015-04-29 | A kind of wind turbine gearbox non-torque load dynamic loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204535991U true CN204535991U (en) | 2015-08-05 |
Family
ID=53749980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520270430.5U Expired - Fee Related CN204535991U (en) | 2015-04-29 | 2015-04-29 | A kind of wind turbine gearbox non-torque load dynamic loading device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204535991U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792525A (en) * | 2015-04-29 | 2015-07-22 | 湖南科技大学 | Dynamic loading device for non-torque load of wind power gear box |
-
2015
- 2015-04-29 CN CN201520270430.5U patent/CN204535991U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792525A (en) * | 2015-04-29 | 2015-07-22 | 湖南科技大学 | Dynamic loading device for non-torque load of wind power gear box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20200429 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |