CN211230718U - Fan running state on-line monitoring device - Google Patents
Fan running state on-line monitoring device Download PDFInfo
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- CN211230718U CN211230718U CN201922118901.1U CN201922118901U CN211230718U CN 211230718 U CN211230718 U CN 211230718U CN 201922118901 U CN201922118901 U CN 201922118901U CN 211230718 U CN211230718 U CN 211230718U
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Abstract
The utility model discloses a fan running state on-line monitoring device includes: the vibration monitoring sensor, the non-contact eddy current displacement sensor and the fastening device looseness monitoring sensor are all connected with the ARM single chip microcomputer after sequentially passing through a filter, a signal amplifier and a digital-to-analog converter; and the ARM single chip microcomputer sends the running state data of the wind generating set to the upper computer through network equipment. The utility model discloses a multiple data acquisition device is collaborative work simultaneously, provides monitoring data jointly, in time masters and is a complete feedback to wind generating set running state, can discover the trouble hidden danger in advance, makes wind generating set state detection more comprehensive, more accurate.
Description
Technical Field
The utility model relates to a fan running state on-line monitoring device belongs to generator monitoring technology field.
Background
The wind energy is formed by uneven heating of the surface of the earth by solar radiation, is a green energy, can be effectively utilized by wind power generation, and does not damage the natural environment while obtaining energy.
The wind generating set is characterized by relatively simple structure, but expensive manufacturing cost and maintenance of each part. In case of major failure, the power supply will be insufficient. With the expansion of the operation scale and the increase of the operation time of the wind generating set, the fault diagnosis and prevention of the wind generating set become more concerned in the industry.
The existing wind generating set is generally arranged to carry out fault diagnosis, an inspection worker is arranged to inspect a wind generating set system according to the ground on time, and the inspection worker can master the running state of the wind generating set by detecting the wind generating set system. However, real-time monitoring cannot be achieved through manual monitoring, uncertain errors exist in monitoring results due to human factors, and the wind generating set is located at a high altitude and is inconvenient to detect.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to above method existence, the utility model provides a fan running state on-line monitoring device can realize discovering the trouble hidden danger in advance to timely grasp of wind generating set running state.
The utility model provides a technical scheme that its technical problem adopted is:
the embodiment of the utility model provides a pair of fan running state on-line monitoring device includes: the vibration monitoring sensor, the non-contact eddy current displacement sensor and the fastening device looseness monitoring sensor are all connected with the ARM single chip microcomputer after sequentially passing through a filter, a signal amplifier and a digital-to-analog converter; and the ARM single chip microcomputer sends the running state data of the wind generating set to the upper computer through network equipment.
As a possible implementation manner of the embodiment, the wind generating set running state online monitoring device further comprises a blade online monitoring sensor installed on a blade of the wind generating set, and the blade online monitoring sensor is connected with the ARM single chip microcomputer after sequentially passing through a filter, a signal amplifier and a digital-to-analog converter.
As a possible implementation manner of this embodiment, the blade online monitoring sensor employs a triaxial wireless acceleration sensor.
As a possible implementation manner of the embodiment, the online monitoring device for the running state of the wind generating set further comprises a vibration detector connected with the ARM single chip microcomputer after sequentially passing through a filter, a signal amplifier and a digital-to-analog converter, wherein the vibration detector is arranged on a bearing of the generator and used for detecting a vibration signal of a generator shaft system.
As a possible implementation manner of this embodiment, the vibration monitoring sensor is provided with an external thread, mounting holes with internal threads are provided on the main bearing housing and the gear box, and end mounting holes of the vibration monitoring sensor are connected in a threaded manner. The vibration monitoring sensor is in threaded connection with the main bearing shell and the gear box, so that the firmness of the installation of the vibration monitoring sensor can be guaranteed, and the vibration monitoring sensor can be conveniently installed and disassembled.
As a possible implementation manner of this embodiment, there are 4 vibration monitoring sensors, 2 of them are installed on the main bearing housing, and the other 2 vibration monitoring sensors are installed on the gear box.
As a possible implementation manner of this embodiment, the non-contact eddy current displacement sensor is mounted on the side of the brake disc facing the generator through a mounting bracket, and a gap exists between the non-contact eddy current displacement sensor and the brake disc.
As a possible implementation manner of this embodiment, one end of the mounting bracket is fixed on a platform below the brake disc, and the other end is provided with a non-contact type eddy current displacement sensor.
As a possible implementation manner of this embodiment, the fastening device looseness monitoring sensors are installed at the front end and the rear end of the generator through the fixing brackets, and a gap exists between the fastening device looseness monitoring sensors and the generator.
As a possible implementation manner of this embodiment, one end of the fixing bracket is fixed on the platform below the generator, and the other end is provided with a fastening device looseness monitoring sensor.
As a possible implementation manner of this embodiment, the filter is an active filter, the signal amplifier is a differential amplifier AD620, the digital-to-analog converter is a TCL2543 chip, and the ARM single chip microcomputer is an STM32F103ZDT6 single chip microcomputer.
The utility model discloses technical scheme beneficial effect that can have as follows:
the utility model discloses technical scheme is through installing vibration monitoring sensor on main bearing housing and gear box, installing non-contact eddy current displacement formula sensor on the gear box high-speed shaft brake disc and installing the not hard up monitoring sensor of fastener at both ends around the generator and work in coordination simultaneously, provides monitoring data jointly, in time masters and does a complete feedback to wind generating set running state, can discover the trouble hidden danger in advance, makes wind generating set state detection more comprehensive, more accurate.
The utility model discloses a multiple measuring method and data acquisition device carry out on-line monitoring simultaneously to a plurality of parts of wind generating set to the realization is mastered the comprehensive state of wind generating set body, discovers trouble hidden danger in advance, makes routine maintenance measure and maintenance action scientific and reasonable more, improves wind generating set's availability.
Description of the drawings:
FIG. 1 is a schematic diagram illustrating an on-line monitoring device for operating conditions of a wind turbine in accordance with an exemplary embodiment;
fig. 2 is a schematic block diagram illustrating an online monitoring device for a fan operation state according to an exemplary embodiment.
Detailed Description
The invention will be further explained with reference to the following embodiments and drawings:
in order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily limit the invention.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a fan operation state online monitoring device, including: the vibration monitoring sensor 1-4 is arranged on a shell of a main bearing B and a gear box C, the non-contact type eddy current displacement sensor 5 is arranged on a high-speed shaft brake disc F of the gear box, the fastening device looseness monitoring sensors 6-7 are arranged at the front end and the rear end of a generator D, and the vibration monitoring sensor 1-4, the non-contact type eddy current displacement sensor 5 and the fastening device looseness monitoring sensors 6-7 are connected with an STM32F103ZDT6 single chip microcomputer after sequentially passing through an active filter, a differential amplifier AD620 and TCL2543 chips; the STM32F103ZDT6 single chip microcomputer sends the running state data of the wind generating set to the upper computer through network equipment such as GPRS modules, so that the upper computer analyzes and processes the running state data of the wind generating set collected and installed on the tower drum E according to the online monitoring device, fault hidden dangers are found in advance, and the state detection of the wind generating set is more comprehensive and accurate.
As a possible implementation manner of this embodiment, the wind turbine generator system operation state online monitoring device further includes a blade online monitoring sensor 8 installed on the wind turbine generator blade a, and the blade online monitoring sensor 8 is connected to the STM32F103ZDT6 single chip microcomputer after sequentially passing through the active filter, the differential amplifier AD620, and the TCL2543 chip.
As a possible implementation manner of this embodiment, the blade online monitoring sensor employs a triaxial wireless acceleration sensor.
As a possible implementation manner of this embodiment, the online monitoring device for the operating state of the wind turbine generator system further includes a vibration detector connected to the STM32F103ZDT6 single chip microcomputer after sequentially passing through the active filter, the differential amplifier AD620, and the TCL2543 chip, where the vibration detector is disposed on a bearing of the generator and is used to detect a vibration signal of a generator shaft system.
As a possible implementation manner of this embodiment, the vibration monitoring sensor is provided with an external thread, mounting holes with internal threads are provided on the main bearing housing and the gear box, and end mounting holes of the vibration monitoring sensor are connected in a threaded manner. The vibration monitoring sensor is in threaded connection with the main bearing shell and the gear box, so that the firmness of the installation of the vibration monitoring sensor can be guaranteed, and the vibration monitoring sensor can be conveniently installed and disassembled.
As a possible implementation manner of this embodiment, there are 4 vibration monitoring sensors, 2 of them are installed on the main bearing housing, and the other 2 vibration monitoring sensors are installed on the gear box.
As a possible implementation manner of this embodiment, the non-contact eddy current displacement sensor is mounted on the side of the brake disc facing the generator through a mounting bracket, and a gap exists between the non-contact eddy current displacement sensor and the brake disc.
As a possible implementation manner of this embodiment, one end of the mounting bracket is fixed on a platform below the brake disc, and the other end is provided with a non-contact type eddy current displacement sensor.
As a possible implementation manner of this embodiment, the fastening device looseness monitoring sensors are installed at the front end and the rear end of the generator through the fixing brackets, and a gap exists between the fastening device looseness monitoring sensors and the generator.
As a possible implementation manner of this embodiment, one end of the fixing bracket is fixed on the platform below the generator, and the other end is provided with a fastening device looseness monitoring sensor.
As a possible implementation manner of this embodiment, the filter is an active filter, the signal amplifier is a differential amplifier AD620, the digital-to-analog converter is a TCL2543 chip, and the ARM single chip microcomputer is an STM32F103ZDT6 single chip microcomputer.
The utility model discloses monitor a plurality of parts local to aerogenerator, cover a plurality of aspects that aerogenerator goes out the problem easily, including aerogenerator driving chain monitoring devices and blade state monitoring devices.
1. Wind driven generator transmission chain monitoring device
The wind driven generator transmission chain monitoring device is mainly divided into the following three parts:
1) vibration monitoring device for wind driven generator
Aiming at the characteristics of a double-fed machine type, the sampling frequency, the sampling period, the number of spectral lines and the like of the device can be flexibly set according to different types of bearings and gear boxes; to low rotational speed part and high rotational speed part, this device all can adopt comparatively suitable data sampling mode for the monitoring is more accurate, and later stage trouble early warning and analysis are more accurate.
Aiming at the characteristics of a direct-drive type unit, the device can monitor the typical faults of the bearing, can perform natural frequency monitoring and early warning, has good monitoring effect on the faults of peristaltic corrosion, electric corrosion and the like of the direct-drive type wind driven generator bearing, and avoids the occurrence of major accidents.
The sensor of the wind driven generator vibration monitoring device is fixed on the shells of the wind driven generator main bearing and the gear box, measures the vibration of the shell of the main bearing and is connected with the data acquisition equipment through a transmission line to transmit back data.
2) Device for monitoring axial displacement of high-speed shaft of gearbox
Wind turbine gearboxes, due to their design characteristics, are associated with large axial forces during the transmission of torque, for which reason manufacturers add a radial thrust bearing to the gear shaft for balancing the axial forces. When the gear box runs for a long time, the radial thrust type bearing is likely to cause performance reduction due to poor lubrication, overhigh bearing temperature or long-term impact load and the like, a thrust dead point begins to deviate to a certain direction, and the running process has large play; if the radial thrust type bearing is not found to be completely damaged in time, the gear shaft greatly moves along the axial direction, and the tooth surface part contacts to cause overlarge stress and tooth breakage; if the gear shaft is used as an output shaft at this time, the rotating part on the output shaft may be abraded by the moving and static parts, causing further expansion of the failure.
The device measures the play signal of the high-speed shaft brake disc by installing 2 non-contact eddy current displacement sensors, can measure the axial displacement of the brake disc on line, visually displays the fault of a radial thrust bearing, prompts a user to shut down and overhaul in time, and avoids the serious damage of internal gears of the gear box and external parts of the gear box caused by the rotation of the high-speed shaft; the method can also measure the play waveform of the brake disc on line, display the amplitude, phase and frequency components of the waveform, find early faults of the radial thrust bearing in time and provide basis for judging whether the generator shaft and the gearbox shaft have the faults of shaft misalignment and the like.
The sensor of the gear box high-speed shaft axial displacement monitoring device is fixed on a platform/stable support near a brake pad of a main shaft of the wind driven generator, and the sensor and the brake pad are measured to be connected with data acquisition equipment through a transmission line to transmit back data.
3) Loosening monitoring device for fastening device of generator
The generator displacement caused by factors such as improper installation, misalignment, loosening of fastening bolts, fracture and the like of the generator can seriously affect the normal operation of the wind generating set, aggravate the vibration of the wind generating set and cause the faults of components such as a generator bearing, a gearbox high-speed shaft bearing and the like. Through the implementation of the loosening monitoring device of the generator fastening device, the actual displacement of the space in multiple dimensions in the running process of the generator can be effectively mastered, a set of effective data analysis mode can be established by combining a wind driven generator vibration monitoring system, the influence of the generator displacement on the movement of a bearing can be quantitatively researched, the loosening, the breakage and other faults of the generator fastening device can be effectively monitored, and the occurrence of major accidents is avoided.
Sensors of the generator fastening device looseness monitoring device are fixed on platforms/stable supports near the front end and the tail end of the generator, gaps between the sensors and the generator are measured, and data are transmitted back through the transmission line and the data acquisition equipment.
2. On-line monitoring device for wind driven generator blade
The device can monitor the running state of the blades of the wind driven generator in real time by installing the specially-made acceleration sensor in each blade of the wind driven generator. The device adopts an active monitoring element and a special installation processing mode, and realizes stable transmission of data while daily maintenance is avoided.
The device can monitor the running state of the blades of the wind driven generator in real time and can feed back the frequency, amplitude and trend of the vibration of the blades visually. When the blade is influenced by factors such as icing, deep fatigue crack, external stress drastic change and the like, the device can monitor the blade in the first time, discover potential faults of the blade as early as possible and prevent malignant accidents.
The device automatically compares the vibration data of the blades under the same working condition by collecting the waveform data of the vibration of the blades under different working conditions (blade angle, wind speed and the like) in normal operation as a reference value. If the frequency or amplitude of the data exceeds the set alarm threshold, namely, the basic operation state of the blade is judged to be possibly changed, and a fault or an icing state is possibly existed.
The on-line monitoring device sensor of the wind driven generator blade is fixed at the tail end of the deep part in each blade, measures the vibration of the wind driven generator blade, and is connected with data acquisition equipment through wireless transmission to transmit back the data to an upper computer for monitoring.
The foregoing is only a preferred embodiment of the present invention, and those skilled in the art can make several improvements and decorations without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. The utility model provides a fan running state on-line monitoring device, characterized by includes: the vibration monitoring sensor, the non-contact eddy current displacement sensor and the fastening device looseness monitoring sensor are all connected with the ARM single chip microcomputer after sequentially passing through a filter, a signal amplifier and a digital-to-analog converter; and the ARM single chip microcomputer sends the running state data of the wind generating set to the upper computer through network equipment.
2. The fan running state online monitoring device of claim 1, further comprising a blade online monitoring sensor mounted on a blade of the wind driven generator, wherein the blade online monitoring sensor is connected with the ARM single chip microcomputer after sequentially passing through a filter, a signal amplifier and a digital-to-analog converter.
3. The fan running state online monitoring device of claim 2, wherein the blade online monitoring sensor is a triaxial wireless acceleration sensor.
4. The fan running state online monitoring device of claim 1, further comprising a vibration detector connected with the ARM single chip microcomputer after sequentially passing through the filter, the signal amplifier and the digital-to-analog converter, wherein the vibration detector is arranged on a bearing of the generator and used for detecting a vibration signal of a generator shaft system.
5. An on-line monitoring device for the operating condition of a fan according to any one of claims 1 to 4, wherein the vibration monitoring sensor is provided with an external thread, mounting holes with internal threads are formed in the main bearing housing and the gear box, and the end mounting holes of the vibration monitoring sensor are in threaded connection.
6. An on-line monitoring device for the operating condition of a fan according to any one of claims 1 to 4, wherein there are 4 vibration monitoring sensors, 2 of which are mounted on the main bearing housing, and the other 2 are mounted on the gearbox.
7. The on-line monitoring device for the running state of the wind turbine as claimed in any one of claims 1 to 4, wherein the non-contact type eddy current displacement sensor is mounted on the side of the brake disc facing the generator through a mounting bracket, and a gap is formed between the non-contact type eddy current displacement sensor and the brake disc.
8. The on-line monitoring device for the operating state of the fan as claimed in claim 7, wherein one end of the mounting bracket is fixed on a platform below the brake disc, and the other end of the mounting bracket is provided with a non-contact type eddy current displacement sensor.
9. The on-line monitoring device for the operating state of the fan as claimed in any one of claims 1 to 4, wherein the fastening device looseness monitoring sensors are mounted at the front end and the rear end of the generator through fixing brackets, and a gap is formed between the fastening device looseness monitoring sensors and the generator.
10. The on-line monitoring device for the operating state of the fan as claimed in claim 9, wherein one end of the fixing bracket is fixed on a platform below the generator, and the other end of the fixing bracket is provided with a fastening device looseness monitoring sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922118901.1U CN211230718U (en) | 2019-11-28 | 2019-11-28 | Fan running state on-line monitoring device |
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| CN201922118901.1U CN211230718U (en) | 2019-11-28 | 2019-11-28 | Fan running state on-line monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654649A (en) * | 2021-08-18 | 2021-11-16 | 中车株洲电机有限公司 | Motor vibration monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654649A (en) * | 2021-08-18 | 2021-11-16 | 中车株洲电机有限公司 | Motor vibration monitoring device |
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Inventor after: Wu Di Inventor after: Tang Wanying Inventor after: Zhen Tieling Inventor after: Wang Jianhua Inventor after: Zhao Shibai Inventor after: Liu Song Inventor before: Wu Di |