CN207485607U - A kind of wind energy conversion system pitch variable bearings fault detection system - Google Patents
A kind of wind energy conversion system pitch variable bearings fault detection system Download PDFInfo
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- CN207485607U CN207485607U CN201721486684.6U CN201721486684U CN207485607U CN 207485607 U CN207485607 U CN 207485607U CN 201721486684 U CN201721486684 U CN 201721486684U CN 207485607 U CN207485607 U CN 207485607U
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Abstract
A kind of wind energy conversion system pitch variable bearings fault detection system, including two vibrating sensors being symmetrically mounted on pitch variable bearings；Speed probe at pitch variable bearings gear ring；Current sensor at pitch motor；The current signal conditioning acquisition module being connect with current sensor；The tach signal conditioning acquisition module being connect with speed probe；The vibration signal conditioning acquisition module being connect with two vibrating sensors；The ram cell being connect with current signal conditioning acquisition module, tach signal conditioning acquisition module and vibration signal conditioning acquisition module；The wireless data transfer module being connect with ram cell；It further includes computer and the wireless data terminal of data and instruction is transmitted between computer and wireless data transfer module；The utility model measures variable pitch electric current to reflect variable-paddle bearing friction moment by measuring pitch variable bearings rotating speed at the gear ring of pitch variable bearings at pitch motor, with reference to the vibration of pitch variable bearings, rotating speed and moment of friction comprehensive detection pitch variable bearings failure.
Description
Technical field
The utility model belongs to wind-power electricity generation fault diagnosis technology field, and in particular to a kind of wind energy conversion system pitch variable bearings failure
Detecting system.
Background technology
For in-service wind energy conversion system pitch variable bearings fault detection system, current existing wind energy conversion system pitch variable bearings vibration detection side
Method is as shown in Figure 1, be then to connect vibrating sensor 104 every 120 ° of arrangements, one vibrating sensor on pitch variable bearings 103
Data acquisition module 105 is connected to, data acquisition module 105 is wirelessly connected with computer 106.By collection analysis vibration signal come
Pitch variable bearings are detected, this method only considered the vibration signal of pitch variable bearings, but the vibration of pitch variable bearings is not independent, it is also
It is related to the rotating speed of pitch variable bearings, cause this method that cannot accurately detect pitch variable bearings failure.Moreover, the holding of pitch variable bearings
When frame breaks down and (is such as broken), variable-paddle bearing friction moment can increase, and vibration signal is insensitive to this reflection.
Invention content
In order to solve the problems in the existing technology, the purpose of this utility model is to provide a kind of wind energy conversion system pitch axis
Fault detection system is held, pitch variable bearings rotating speed is measured at the gear ring of pitch variable bearings, it is (anti-that variable pitch electric current is measured at pitch motor
Reflect variable-paddle bearing friction moment), vibration, rotating speed and the event of moment of friction comprehensive detection pitch variable bearings of pitch variable bearings can be combined
Barrier.
In order to achieve the above objectives, technical solution is used by the utility model：
A kind of wind energy conversion system pitch variable bearings fault detection system is used to measure pitch axis including being symmetrically mounted on pitch variable bearings
Hold the first vibrating sensor 3 and the second vibrating sensor 4 of vibration signal；It further includes and is measured at the gear ring of pitch variable bearings
The speed probe 2 of pitch variable bearings rotating speed；At pitch motor, measure variable pitch electric current and reflect variable-paddle bearing friction moment
Current sensor 1；It is that current sensor 1 is powered to be connect with current sensor 1, acquires and amplifies, filtered circuit sensor
The current signal conditioning acquisition module 5 of signal；It is that speed probe 2 is powered to be connect with speed probe 2, acquire and amplify,
Filter the tach signal conditioning acquisition module 6 of signals of rotational speed sensor；With the first vibrating sensor 3 and the second vibrating sensor 4
Connection is that the first vibrating sensor 3 and the second vibrating sensor 4 are powered, and acquires and amplifies, filters vibration sensor signal
Vibration signal improves acquisition module 7；With current signal conditioning acquisition module 5, tach signal conditioning acquisition module 6 and vibration signal
Improve the ram cell 8 that digital signal is filtered, amplify and is stored that acquisition module 7 connects；The nothing being connect with ram cell 8
Line data transmission module 9；Acquisition module 5 is improved for current signal, tach signal improves acquisition module 6, vibration signal conditioning is adopted
Collect the power module 10 that module 7, ram cell 8 and wireless data transfer module 9 are powered；Further include computer 12 and with calculating
The wireless data terminal 11 of data and instruction is transmitted between machine 12 and wireless data transfer module 9.
Compared to the prior art compared with the utility model has following advantage：
(1) Tthe utility model system is by measuring the rotating speeds of pitch variable bearings, can extrapolate pitch variable bearings there is part therefore
The frequency of impact vibration occurs during barrier, condition is provided for Accurate Diagnosis pitch variable bearings local fault；
(2) Tthe utility model system can reflect variable-paddle bearing friction moment by measuring pitch motor electric current, for diagnosis
The retainer failure of pitch variable bearings provides foundation；
Generated effect:
Pitch variable bearings holding can also be diagnosed with Accurate Diagnosis pitch variable bearings local fault by Tthe utility model system
Frame failure.
Description of the drawings
Fig. 1 is existing vibration detection device schematic diagram.
Fig. 2 is the utility model wind energy conversion system pitch variable bearings fault detection system schematic diagram.
Specific embodiment
As shown in Fig. 2, a kind of wind energy conversion system pitch variable bearings fault detection system of the utility model, including being symmetrically mounted on variable pitch
It is used to measure the first vibrating sensor 3 and the second vibrating sensor 4 of pitch variable bearings vibration signal on bearing；It further includes and is mounted on
The speed probe 2 of pitch variable bearings rotating speed is measured at the gear ring of pitch variable bearings；At pitch motor, variable pitch electric current is measured simultaneously
Reflect the current sensor 1 of variable-paddle bearing friction moment；It is that current sensor 1 is powered to be connect with current sensor 1, and acquisition is simultaneously
Amplification, the current signal conditioning acquisition module 5 of filtered circuit sensor signal；It is revolution speed sensing to be connect with speed probe 2
Device 2 is powered, and acquires and amplify, filters the tach signal conditioning acquisition module 6 of signals of rotational speed sensor；With the first vibrating sensor
3 and second vibrating sensor 4 connection be that the first vibrating sensor 3 and the second vibrating sensor 4 are powered, acquire and amplify, filter
The vibration signal conditioning acquisition module 7 of wave vibration sensor signal；It is improved with current signal conditioning acquisition module 5, tach signal
The ram cell that digital signal is filtered, amplify and is stored that acquisition module 6 and vibration signal conditioning acquisition module 7 connect
8；The wireless data transfer module 9 being connect with ram cell 8；Acquisition module 5, tach signal conditioning acquisition are improved for current signal
The power module 10 that module 6, vibration signal conditioning acquisition module 7, ram cell 8 and wireless data transfer module 9 are powered；Also wrap
It includes computer 12 and the wireless data terminal of data and instruction is transmitted between computer 12 and wireless data transfer module 9
11.The utility model detecting system can be detected multiple blade pitch devices.
The operation principle of the utility model is：Pitch axis is measured by the first vibrating sensor 3 and the second vibrating sensor 4
Vibration signal is held, pitch variable bearings rotating speed is measured by speed probe 2, it is (anti-to measure pitch motor electric current by current sensor 1
Reflect variable-paddle bearing friction moment), solve the problems, such as that existing apparatus can not detect the rotating speed of pitch variable bearings and pitch motor electric current.
Computer can extrapolate the impact generated when local fault occurs for pitch variable bearings using prior art by pitch variable bearings rotating speed
Frequency (i.e. theoretical value), can Accurate Diagnosis generation if the frequency (i.e. actual value) impacted in vibration signal is identical with theoretical value
Local fault, the prior art are unable to Accurate Diagnosis local fault because can not obtain pitch variable bearings rotating speed due to.In addition, similarity condition
If the moment of friction of lower detected pitch variable bearings is significantly greater than the moment of friction of normal pitch variable bearings, also illustrate pitch variable bearings
Failure (very possible pitch variable bearings retainers fracture).
Claims (1)
1. a kind of wind energy conversion system pitch variable bearings fault detection system is used to measure pitch variable bearings including being symmetrically mounted on pitch variable bearings
The first vibrating sensor (3) of vibration signal and the second vibrating sensor (4)；It is characterized in that：It further includes mounted on pitch axis
The speed probe (2) of pitch variable bearings rotating speed is measured at the gear ring held；At pitch motor, measure variable pitch electric current and reflect
The current sensor (1) of variable-paddle bearing friction moment；It is current sensor (1) power supply to be connect with current sensor (1), acquisition
And amplify, the current signal of filtered circuit sensor signal conditioning acquisition module (5)；Connect with speed probe (2) is to turn
Fast sensor (2) power supply acquires and amplifies, filters the tach signal conditioning acquisition module (6) of signals of rotational speed sensor；With first
Vibrating sensor (3) and the second vibrating sensor (4) connection are the first vibrating sensor (3) and the second vibrating sensor (4)
Power supply acquires and amplifies, filters the vibration signal conditioning acquisition module (7) of vibration sensor signal；It is adopted with current signal conditioning
Collect module (5), tach signal conditioning acquisition module (6) and vibration signal conditioning acquisition module (7) connection by digital signal into
Row filtering, the ram cell (8) for amplifying and storing；The wireless data transfer module (9) being connect with ram cell (8)；Believe for electric current
Number conditioning acquisition module (5), tach signal conditioning acquisition module (6), vibration signal conditioning acquisition module (7), ram cell (8)
With the power module (10) of wireless data transfer module (9) power supply；Further include computer (12) and with computer (12) and nothing
The wireless data terminal (11) of data and instruction is transmitted between line data transmission module (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721486684.6U CN207485607U (en) | 2017-11-09 | 2017-11-09 | A kind of wind energy conversion system pitch variable bearings fault detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721486684.6U CN207485607U (en) | 2017-11-09 | 2017-11-09 | A kind of wind energy conversion system pitch variable bearings fault detection system |
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| Publication Number | Publication Date |
|---|---|
| CN207485607U true CN207485607U (en) | 2018-06-12 |
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| CN201721486684.6U Active CN207485607U (en) | 2017-11-09 | 2017-11-09 | A kind of wind energy conversion system pitch variable bearings fault detection system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760318A (en) * | 2018-08-31 | 2018-11-06 | 西安热工研究院有限公司 | A kind of wind energy conversion system pitch variable bearings fault detection method |
| CN111412116A (en) * | 2020-04-30 | 2020-07-14 | 河北新天科创新能源技术有限公司 | Failure analysis method for fan variable pitch bearing |
| CN112228290A (en) * | 2020-10-22 | 2021-01-15 | 华能国际电力股份有限公司 | Intelligent early warning method for faults of wind turbine variable pitch system |
| CN112594141A (en) * | 2020-11-12 | 2021-04-02 | 北京金风慧能技术有限公司 | Bearing fault monitoring method, system, device, controller and storage medium |
| WO2021086338A1 (en) * | 2019-10-30 | 2021-05-06 | General Electric Company | System and method for preventing pitch bearing failures in a wind turbine using pitch motor signals |
| CN113586366A (en) * | 2021-09-17 | 2021-11-02 | 中国华能集团清洁能源技术研究院有限公司 | Fault monitoring method and system for fan variable pitch system |
| CN114000988A (en) * | 2021-11-01 | 2022-02-01 | 西安热工研究院有限公司 | Fatigue life prediction device and method for bearing seat of wind turbine generator |
| EP4187086A1 (en) * | 2021-11-29 | 2023-05-31 | General Electric Renovables España S.L. | System and method for responding to a friction coefficient signal of a wind turbine |
-
2017
- 2017-11-09 CN CN201721486684.6U patent/CN207485607U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760318A (en) * | 2018-08-31 | 2018-11-06 | 西安热工研究院有限公司 | A kind of wind energy conversion system pitch variable bearings fault detection method |
| WO2021086338A1 (en) * | 2019-10-30 | 2021-05-06 | General Electric Company | System and method for preventing pitch bearing failures in a wind turbine using pitch motor signals |
| CN111412116A (en) * | 2020-04-30 | 2020-07-14 | 河北新天科创新能源技术有限公司 | Failure analysis method for fan variable pitch bearing |
| CN112228290A (en) * | 2020-10-22 | 2021-01-15 | 华能国际电力股份有限公司 | Intelligent early warning method for faults of wind turbine variable pitch system |
| CN112228290B (en) * | 2020-10-22 | 2023-05-05 | 华能国际电力股份有限公司 | Intelligent early warning method for faults of variable pitch system of wind turbine |
| CN112594141A (en) * | 2020-11-12 | 2021-04-02 | 北京金风慧能技术有限公司 | Bearing fault monitoring method, system, device, controller and storage medium |
| CN113586366A (en) * | 2021-09-17 | 2021-11-02 | 中国华能集团清洁能源技术研究院有限公司 | Fault monitoring method and system for fan variable pitch system |
| CN114000988A (en) * | 2021-11-01 | 2022-02-01 | 西安热工研究院有限公司 | Fatigue life prediction device and method for bearing seat of wind turbine generator |
| EP4187086A1 (en) * | 2021-11-29 | 2023-05-31 | General Electric Renovables España S.L. | System and method for responding to a friction coefficient signal of a wind turbine |
| US11767821B2 (en) | 2021-11-29 | 2023-09-26 | General Electric Renovables Espana, S.L. | System and method for responding to a friction coefficient signal of a wind turbine |
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