CN104792526A - Wind power gearbox dynamic response multi-parameter detection device - Google Patents
Wind power gearbox dynamic response multi-parameter detection device Download PDFInfo
- Publication number
- CN104792526A CN104792526A CN201510211658.1A CN201510211658A CN104792526A CN 104792526 A CN104792526 A CN 104792526A CN 201510211658 A CN201510211658 A CN 201510211658A CN 104792526 A CN104792526 A CN 104792526A
- Authority
- CN
- China
- Prior art keywords
- signal
- module
- analysis
- detection device
- dynamic response
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a wind power gearbox dynamic response multi-parameter detection device comprising a signal collection module, a signal conditioning module, a signal analyzing and processing module and a dynamic performance evaluation module which are serially connected sequentially. The signal collection module collects gearbox dynamic response parameters, the gearbox dynamic response parameters after being shaped and amplified through the signal conditioning module are sent into the signal analyzing and processing module, and collected signal are led into the dynamic performance evaluation module through the signal analyzing and processing module. The signal collection module is arranged, so that realtime monitoring of parts in rotating and lubricating states in a closed gearbox by detecting dynamic stress, displacement, acceleration, noise and temperature of key parts of a wind power gearbox, load distribution condition of the parts can be known comprehensively, and a feasible technical scheme can be provided for dynamic performance testing of rotating and lubricating structural members in the closed gearbox.
Description
Technical field
The present invention relates to wind-powered electricity generation field, particularly a kind of wind turbine gearbox dynamic response Multi-parameter detection device.
Background technology
Gear case premature failure seriously governs the healthy and rapid development of Wind Power Generation Industry.Wind-powered electricity generation is one of new forms of energy most with prospects, and global wind-powered electricity generation installation amount continues with the speed increment of average annual 20% nearly ten years, and installed capacity in the end of the year 2014 reaches 370GW; China's installed capacity of wind-driven power is doubled growth continuously, becomes the country that installed capacity is maximum, accounts for 27% of the installation of global wind-powered electricity generation.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 makes it cannot 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.
Although China's Wind Power Generation Industry development in recent years is very rapid; but the design and manufaction technology of gear case is still in introduction digestion phase; in-service Wind turbines mostly endures the puzzlement of gear case premature failure to the fullest extent; the problems such as the life-span is short, failure rate is high, poor reliability become increasingly conspicuous; frequently there is the spot replace event of gear case batch in the 2-3MW Wind turbines installed especially in recent years; 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.Therefore, test obtains typical wind and carries/true the performance load of operating mode lower tooth roller box critical component by experiment, and this will provide basic data for it design, is conducive to announcement gear case premature failure mechanism.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of structure simple, can the wind turbine gearbox dynamic response Multi-parameter detection device of dynamic response parameter of Real-Time Monitoring gear case critical component.
The technical scheme that the present invention solves the problem is: a kind of wind turbine gearbox dynamic response Multi-parameter detection device, comprise signal acquisition module, Signal-regulated kinase, signal analysis and processing module and dynamic property evaluation module, described signal acquisition module, Signal-regulated kinase, signal analysis and processing module, dynamic property evaluation module is connected in series successively, signal acquisition module gathers vibration of bearings signal, bearing temperature signal, Gear-box Noise signal, the displacement signal of planet carrier and sun gear, and the signal collected is sent into Signal-regulated kinase, through Signal-regulated kinase shaping, signal analysis and processing module is sent into after amplifying, by signal analysis and processing module, the signal gathered is imported dynamic property evaluation module, carry out Analysis of Vibration Characteristic, noise-source analysis, fatigue load and life prediction analysis.
In above-mentioned wind turbine gearbox dynamic response Multi-parameter detection device, described dynamic property evaluation module involving vibrations specificity analysis module, noise-source analysis module and fatigue load and life prediction analysis module.
In above-mentioned wind turbine gearbox dynamic response Multi-parameter detection device, described signal acquisition module comprises foil gauge, displacement transducer, sound meter, acceleration transducer and temperature sensor, the sun gear of gear case and the tooth root of secondary parallel axis system gear and ring gear place, planet carrier and high speed shaft are equipped with foil gauge, planet carrier, planet axis and sun gear are equipped with displacement transducer, described sound meter is suspended in gear housing, described acceleration transducer is arranged on the bearing seat of gear case inner stages transmission shaft, described temperature sensor is arranged on bearing.
In above-mentioned wind turbine gearbox dynamic response Multi-parameter detection device, institute's displacement sensors is non-contact electric eddy shift sensor.
In above-mentioned wind turbine gearbox dynamic response Multi-parameter detection device, described temperature sensor is platinum resistance.
In above-mentioned wind turbine gearbox dynamic response Multi-parameter detection device, described acceleration transducer is piezoelectric acceleration transducer.
Beneficial effect of the present invention is:
1, the present invention is provided with signal acquisition module, by the dynamic stress to wind turbine gearbox critical component, displacement, acceleration, noise and temperature detection, realize the Real-Time Monitoring of rotation, lubricating status lower component in closed gear case, the loading conditions of parts can be grasped more all sidedly, provide feasible technical scheme by for the dynamic performance testing of rotation, lubrication system part in closed gear case;
2, dynamic property evaluation module involving vibrations specificity analysis module of the present invention, noise-source analysis module, fatigue load and life prediction analysis module, wherein, the spectrum analysis reflection gear case vibration characteristics of acceleration vibration signal, obtains the sensitivity coefficient of key parameter further; The noise signal analysis identification noise source that sound meter gathers, provides theoretical foundation for reducing noise; Critical component displacement, temperature and stress data can be used for deriving and calculating its fatigue load spectrum, assess its dynamic fatigue property deterioration process in conjunction with fatigue life model.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is the structural representation of wind turbine gearbox.
Fig. 3 is the layout schematic diagram of foil gauge of the present invention on gear.
Fig. 4 is the layout schematic diagram of displacement transducer of the present invention on planet carrier.
Fig. 5 is the layout schematic diagram of platinum resistance of the present invention on rolling bearing outer shroud.
Fig. 6 is gearbox of wind turbine dynamic property estimation flow figure.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 1, the present invention includes signal acquisition module 1, Signal-regulated kinase, signal analysis and processing module and dynamic property evaluation module 2, described signal acquisition module 1, Signal-regulated kinase, signal analysis and processing module, dynamic property evaluation module 2 are connected in series successively, and described signal acquisition module 1 comprises foil gauge, displacement transducer, sound meter, acceleration transducer and temperature sensor.
Gear speedup case comprises primary planet train and secondary parallel shafts train, and what adopt sun gear to float all carries mode, and Fig. 2 is shown in structural representation, in figure: 201 represent slow speed turbine stage, 202 represent middling speed level, and 203 represent high speed level, and 204 is planet carrier, 205 is ring gear, 206 is planetary gear, and 207 is sun gear, and 208 is slow-speed shaft, 209 is middling speed axle, and 210 is high speed shaft.Carry except generation moment of torsion because impeller bears wind, also will produce the non-torque load such as all the other five free moments of flexure, thrusts, this brings additional displacement and stress response by giving gear case inner structure.Therefore, the displacement detecting of the critical component such as planet carrier 204, sun gear 207 can disclose the impact of non-torque load on kinematic train engagement and condition of misalignment.
Because 20kW gear case speed increasing ratio is 80, module is less, therefore only arranges 3 foil gauges 101 at the tooth root of sun gear 207, secondary parallel axis system gear, is derived by foil gauge signal respectively by slip ring; Uniform 6 foil gauges 101 of ring gear 205, foil gauge 101 paste position is as shown in Figure 3; Consider that the load level that planet carrier 204 bears is higher, and high speed shaft 210 is comparatively large by load motor properties influence, therefore respectively at planet carrier 204 and high speed shaft 210 surface mount foil gauge 101.
Planet carrier 204, planet axis and sun gear 207 is equipped with non-contact electric eddy shift sensor, the probe 402 of non-contact electric eddy shift sensor is arranged on corresponding bearing seat or gear housing, induction derby 401 is fixed on the end face of measured piece, its mount scheme is shown in Fig. 4, and in figure, 403 is sensor support base.
Gear housing strand threaded hole processed, described sound meter is suspended in gear housing, realizes noise signal and detects.
Kinematic train at different levels all arranges that 13 to acceleration transducer, is fixed on bearing seat by bonding or thread connection, and acceleration transducer is piezoelectric acceleration transducer.
Because high-speed bearing rotating speed is more than 1000rpm, very easily destroy bearing because temperature rise is too high, therefore at outer race fluting sticking temperature sensor 501, temperature sensor 501 is film platinum resistor, and its layout is shown in Fig. 5.
Foil gauge and platinum resistance transducing signal pass to signal analysis and processing module via signal conditioning circuit, and displacement, acceleration and noise signal pass to signal analysis and processing module via data acquisition module.Described dynamic property evaluation module 2 involving vibrations specificity analysis module, noise-source analysis module and fatigue load and life prediction analysis module, wherein, the spectrum analysis of acceleration vibration signal can reflect gear case vibration characteristics, provides theoretical foundation for reducing noise; Critical component displacement, temperature and stress data can be used for deriving and calculating its fatigue load spectrum, assess its dynamic fatigue property deterioration process in conjunction with fatigue life model.
In dynamic property evaluation module, the various signals of gear case are analyzed, obtain the envelope spectrum feature of the temporal signatures of gear case vibration signal, frequency domain character and envelope signal; Then gear case temporal signatures, frequency domain character, operation and Monitoring Data are divided into operation monitoring historical data subset; Feature extraction is carried out to operation monitoring historical data subset, generates into the dynamic property feature database of each parts of gear case; Dynamic property feature database according to each parts of gear case sets up evaluation of dynamic model, by operation monitoring historical data subset to the training of evaluation of dynamic model, obtain the dynamic property real-time evaluation model of Wind turbines testing table gear case, by dynamic property real-time evaluation model, the operation of real-time gear case and Monitoring Data are evaluated, obtain the vibration characteristics of each parts, noise-source analysis and fatigue load and life prediction.Detailed process as shown in Figure 6.
Claims (6)
1. a wind turbine gearbox dynamic response Multi-parameter detection device, it is characterized in that: comprise signal acquisition module, Signal-regulated kinase, signal analysis and processing module and dynamic property evaluation module, described signal acquisition module, Signal-regulated kinase, signal analysis and processing module, dynamic property evaluation module is connected in series successively, signal acquisition module gathers vibration of bearings signal, bearing temperature signal, Gear-box Noise signal, the displacement signal of planet carrier and sun gear, and the signal collected is sent into Signal-regulated kinase, through Signal-regulated kinase shaping, signal analysis and processing module is sent into after amplifying, by signal analysis and processing module, the signal gathered is imported dynamic property evaluation module, carry out Analysis of Vibration Characteristic, noise-source analysis, fatigue load and life prediction analysis.
2. wind turbine gearbox dynamic response Multi-parameter detection device as claimed in claim 1, is characterized in that: described dynamic property evaluation module involving vibrations specificity analysis module, noise-source analysis module and fatigue load and life prediction analysis module.
3. wind turbine gearbox dynamic response Multi-parameter detection device as claimed in claim 1, it is characterized in that: described signal acquisition module comprises foil gauge, displacement transducer, sound meter, acceleration transducer and temperature sensor, the sun gear of gear case and the tooth root of secondary parallel axis system gear and ring gear place, planet carrier and high speed shaft are equipped with foil gauge, planet carrier, planet axis and sun gear are equipped with displacement transducer, described sound meter is suspended in gear housing, described acceleration transducer is arranged on the bearing seat of gear case inner stages transmission shaft, described temperature sensor is arranged on bearing.
4. wind turbine gearbox dynamic response Multi-parameter detection device as claimed in claim 3, is characterized in that: institute's displacement sensors is non-contact electric eddy shift sensor.
5. wind turbine gearbox dynamic response Multi-parameter detection device as claimed in claim 3, is characterized in that: described temperature sensor is platinum resistance.
6. wind turbine gearbox dynamic response Multi-parameter detection device as claimed in claim 3, is characterized in that: described acceleration transducer is piezoelectric acceleration transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510211658.1A CN104792526B (en) | 2015-04-29 | 2015-04-29 | Wind turbine gearbox dynamic response Multi-parameter detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510211658.1A CN104792526B (en) | 2015-04-29 | 2015-04-29 | Wind turbine gearbox dynamic response Multi-parameter detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104792526A true CN104792526A (en) | 2015-07-22 |
| CN104792526B CN104792526B (en) | 2018-03-20 |
Family
ID=53557516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510211658.1A Active CN104792526B (en) | 2015-04-29 | 2015-04-29 | Wind turbine gearbox dynamic response Multi-parameter detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104792526B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115492A (en) * | 2018-09-04 | 2019-01-01 | 中车戚墅堰机车车辆工艺研究所有限公司 | Cycloid pinwheel planetary gear transmission system mechanics analysis apparatus and method |
| CN109253881A (en) * | 2018-11-09 | 2019-01-22 | 国电联合动力技术有限公司 | Planetary wheel of wind turbine gearbox fault detection mechanism and intelligent analysis system and method |
| CN109952429A (en) * | 2016-09-07 | 2019-06-28 | 维斯塔斯风力系统集团公司 | Predict wind turbine noise |
| CN110220699A (en) * | 2019-06-28 | 2019-09-10 | 重庆德音科技有限公司 | A kind of test method for low module planetary gear train load balance coefficient |
| CN110261102A (en) * | 2019-06-28 | 2019-09-20 | 重庆德音科技有限公司 | A kind of device for the test of low module planetary gear train load balance coefficient |
| CN110594184A (en) * | 2019-10-14 | 2019-12-20 | 中铁第四勘察设计院集团有限公司 | Safety monitoring device and method for tunnel hoisting fan |
| CN110686066A (en) * | 2019-09-20 | 2020-01-14 | 中国飞行试验研究院 | Transmission system and gear strain measuring point acquisition method |
| CN112595443A (en) * | 2020-11-27 | 2021-04-02 | 重庆大学 | Gear ring load distribution detection system and method |
| CN112945551A (en) * | 2021-01-27 | 2021-06-11 | 重庆大学 | Gear ring dynamic deformation detection system and evaluation method |
| CN113188744A (en) * | 2021-07-01 | 2021-07-30 | 西北工业大学 | Collision test device for bearing rolling body and retainer of planetary gear |
| CN116990014A (en) * | 2023-09-26 | 2023-11-03 | 传麒科技(北京)股份有限公司 | Gear box performance test system |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08145779A (en) * | 1994-11-28 | 1996-06-07 | Meidensha Corp | Brake sound test judging device and method for it |
| CN201402209Y (en) * | 2009-03-30 | 2010-02-10 | 唐德尧 | Intelligent failure monitoring and diagnosis system for wind generating set |
| CN201527338U (en) * | 2009-11-10 | 2010-07-14 | 西安科技大学 | Portable coal mining machine gearbox testing diagnostic apparatus |
| CN202119630U (en) * | 2011-06-26 | 2012-01-18 | 北京理工大学 | On-line monitoring and fault diagnosis device for bench test of reliability of microplane automobile driving axle |
| CN202710100U (en) * | 2012-04-17 | 2013-01-30 | 上海探能实业有限公司 | Wind generating set remote on-line health state monitoring and fault diagnosing system |
| CN102914427A (en) * | 2012-10-14 | 2013-02-06 | 北京工业大学 | Fatigue damage estimating method and monitoring device under multi-axis random load |
| CN102928221A (en) * | 2012-11-09 | 2013-02-13 | 昆山北极光电子科技有限公司 | Fan gear case fault diagnosis method |
| CN103543010A (en) * | 2013-10-11 | 2014-01-29 | 西安交通大学 | High-speed screw and screw pair comprehensive examination test bed |
| CN203490073U (en) * | 2013-09-16 | 2014-03-19 | 成都赛腾自动化工程有限公司 | A real-time monitoring system of a wind-driven generator gear case |
| CN103983454A (en) * | 2014-05-26 | 2014-08-13 | 湖南科技大学 | Wind turbine generator transmission chain full-working-condition test simulation device |
| CN204202871U (en) * | 2014-11-05 | 2015-03-11 | 中国三峡新能源公司 | A kind of gearbox of wind turbine state evaluation device |
| CN204535990U (en) * | 2015-04-29 | 2015-08-05 | 湖南科技大学 | Wind turbine gearbox dynamic response Multi-parameter detection device |
-
2015
- 2015-04-29 CN CN201510211658.1A patent/CN104792526B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08145779A (en) * | 1994-11-28 | 1996-06-07 | Meidensha Corp | Brake sound test judging device and method for it |
| CN201402209Y (en) * | 2009-03-30 | 2010-02-10 | 唐德尧 | Intelligent failure monitoring and diagnosis system for wind generating set |
| CN201527338U (en) * | 2009-11-10 | 2010-07-14 | 西安科技大学 | Portable coal mining machine gearbox testing diagnostic apparatus |
| CN202119630U (en) * | 2011-06-26 | 2012-01-18 | 北京理工大学 | On-line monitoring and fault diagnosis device for bench test of reliability of microplane automobile driving axle |
| CN202710100U (en) * | 2012-04-17 | 2013-01-30 | 上海探能实业有限公司 | Wind generating set remote on-line health state monitoring and fault diagnosing system |
| CN102914427A (en) * | 2012-10-14 | 2013-02-06 | 北京工业大学 | Fatigue damage estimating method and monitoring device under multi-axis random load |
| CN102928221A (en) * | 2012-11-09 | 2013-02-13 | 昆山北极光电子科技有限公司 | Fan gear case fault diagnosis method |
| CN203490073U (en) * | 2013-09-16 | 2014-03-19 | 成都赛腾自动化工程有限公司 | A real-time monitoring system of a wind-driven generator gear case |
| CN103543010A (en) * | 2013-10-11 | 2014-01-29 | 西安交通大学 | High-speed screw and screw pair comprehensive examination test bed |
| CN103983454A (en) * | 2014-05-26 | 2014-08-13 | 湖南科技大学 | Wind turbine generator transmission chain full-working-condition test simulation device |
| CN204202871U (en) * | 2014-11-05 | 2015-03-11 | 中国三峡新能源公司 | A kind of gearbox of wind turbine state evaluation device |
| CN204535990U (en) * | 2015-04-29 | 2015-08-05 | 湖南科技大学 | Wind turbine gearbox dynamic response Multi-parameter detection device |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109952429B (en) * | 2016-09-07 | 2020-11-10 | 维斯塔斯风力系统集团公司 | Predicting wind turbine noise |
| CN109952429A (en) * | 2016-09-07 | 2019-06-28 | 维斯塔斯风力系统集团公司 | Predict wind turbine noise |
| US11286909B2 (en) | 2016-09-07 | 2022-03-29 | Vestas Wind Systems A/S | Predicting wind turbine noise |
| CN109115492A (en) * | 2018-09-04 | 2019-01-01 | 中车戚墅堰机车车辆工艺研究所有限公司 | Cycloid pinwheel planetary gear transmission system mechanics analysis apparatus and method |
| CN109253881A (en) * | 2018-11-09 | 2019-01-22 | 国电联合动力技术有限公司 | Planetary wheel of wind turbine gearbox fault detection mechanism and intelligent analysis system and method |
| CN110261102B (en) * | 2019-06-28 | 2022-01-28 | 重庆德音科技有限公司 | Device for testing load-sharing coefficient of small-modulus planetary gear train |
| CN110261102A (en) * | 2019-06-28 | 2019-09-20 | 重庆德音科技有限公司 | A kind of device for the test of low module planetary gear train load balance coefficient |
| CN110220699A (en) * | 2019-06-28 | 2019-09-10 | 重庆德音科技有限公司 | A kind of test method for low module planetary gear train load balance coefficient |
| CN110686066A (en) * | 2019-09-20 | 2020-01-14 | 中国飞行试验研究院 | Transmission system and gear strain measuring point acquisition method |
| CN110594184A (en) * | 2019-10-14 | 2019-12-20 | 中铁第四勘察设计院集团有限公司 | Safety monitoring device and method for tunnel hoisting fan |
| CN112595443A (en) * | 2020-11-27 | 2021-04-02 | 重庆大学 | Gear ring load distribution detection system and method |
| CN112945551A (en) * | 2021-01-27 | 2021-06-11 | 重庆大学 | Gear ring dynamic deformation detection system and evaluation method |
| CN113188744A (en) * | 2021-07-01 | 2021-07-30 | 西北工业大学 | Collision test device for bearing rolling body and retainer of planetary gear |
| CN113188744B (en) * | 2021-07-01 | 2021-08-31 | 西北工业大学 | Collision test device for bearing rolling body and retainer of planetary gear |
| CN116990014A (en) * | 2023-09-26 | 2023-11-03 | 传麒科技(北京)股份有限公司 | Gear box performance test system |
| CN116990014B (en) * | 2023-09-26 | 2023-12-22 | 传麒科技(北京)股份有限公司 | Gear box performance test system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104792526B (en) | 2018-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104792526B (en) | Wind turbine gearbox dynamic response Multi-parameter detection device | |
| CN104019000B (en) | The loading spectrum of wind power generating set is determined and perspective maintenance system | |
| CN103604601B (en) | Based on the fault diagnostic test platform of wind turbine gearbox Work condition analogue | |
| CN202661241U (en) | Vibration test device for wind power gear box simulation | |
| CN201497602U (en) | Friction moment measurement device of bearing | |
| CN105004462A (en) | Fault-identification-based fan energy consumption monitoring system | |
| CN101256103A (en) | Megawatt level wind power generation oar-changing bearing friction torque numeric control testing machine and test approach | |
| CN202547923U (en) | Vibration detecting device for pitch-variable bearing of wind turbine generator system | |
| CN204535990U (en) | Wind turbine gearbox dynamic response Multi-parameter detection device | |
| CN105548595A (en) | Rotation speed detection method for different levels of shafts of wind power gear case | |
| CN104792520A (en) | Fault diagnosis method for gear case of wind turbine generator system | |
| CN202453182U (en) | Fault diagnosis device of gearbox of wind generation set | |
| Keller et al. | Uptower investigation of main and high-speed-shaft bearing reliability | |
| CN103852255A (en) | Typical transmission fault intelligent diagnosis method based on neural network wind generating set | |
| CN205384141U (en) | Engineering machine tool transmission assembly performance detection and analysis test bench | |
| CN207600740U (en) | A kind of monitoring system for wind-driven generator | |
| CN113919102A (en) | Method and system for analyzing load transfer characteristics of main transmission system of wind turbine generator | |
| CN114295367A (en) | Wind turbine generator gearbox working condition online monitoring method | |
| CN111426476B (en) | Rail transit bearing life-span reinforcement test system | |
| Amin et al. | Condition monitoring in a wind turbine planetary gearbox using sensor fusion and convolutional neural network | |
| CN102928221A (en) | Fan gear case fault diagnosis method | |
| CN104535928A (en) | Simulator stand and state monitoring device for direct-driven wind turbine generator | |
| CN203287193U (en) | Simulation device used for fault diagnosis for main transmission system of wind generating set | |
| CN207095858U (en) | A kind of bearing test device for motor | |
| CN211230718U (en) | Fan running state on-line monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |