CN203673317U - Fan condition monitoring system - Google Patents
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- CN203673317U CN203673317U CN201320818343.XU CN201320818343U CN203673317U CN 203673317 U CN203673317 U CN 203673317U CN 201320818343 U CN201320818343 U CN 201320818343U CN 203673317 U CN203673317 U CN 203673317U
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Abstract
A fan condition monitoring system is disclosed. The system includes a data server and a plurality of unit monitoring devices that are in mutual communication. Each unit monitoring device includes an acceleration sensor arranged in a transmission component of a unit and arranged to detect vibration of the transmission part; an oil liquid detection sensor arranged along a lubrication oil path of a gear box of the unit and arranged to detecting condition parameters of the lubrication oil; a data collecting device arranged to collect vibration signals from the acceleration sensor and condition parameter signals from the oil liquid detection sensor and to output the collected signals to a data server; and the data server arranged to storage and analyze the signals received from the data collecting device for obtaining a monitoring result. By adopting the above technical solution, vibration of the transmission component and condition of lubricating oil of each unit can be monitored in real time by utilizing the acceleration sensor and the oil liquid detection sensor and accurate fault location and fault predication can be realized.
Description
Technical field
The utility model relates to wind power generation field, particularly, relates to a kind of fan condition supervisory system.
Background technology
The principle of wind-power electricity generation, is to utilize wind-force to drive air vane rotation, then by gear case, the speed of rotation is promoted, and drives generator generating.The generating total amount of wind energy turbine set and economic benefit depend on good, the stable operation of unit.The fault of main shaft, gear case and generator has accounted for significant proportion in the fault of wind-powered electricity generation unit, and the equipment downtime that its fault causes has accounted for 70% of wind-powered electricity generation unit nonscheduled down time.The inefficacy of the mechanical part such as main shaft, gear case is long-term, a to accumulate process, and these inefficacies comprise that the connection of the wearing and tearing of the rotating part such as gear, bearing, securing member is become flexible.Therefore, need to take certain method for supervising to make diagnosis and location to fault, thus accident and the economic loss of avoiding blower fan to cause because of catastrophic failure.
In the prior art, the monitoring of wind-powered electricity generation unit is mainly comprised to electric parameters and condition monitoring, video monitoring, vibration monitoring, Oil Monitoring etc.Wherein, electric parameters and condition monitoring adopt from blower fan data acquisition and parameters such as monitoring the voltage that gathers (SCADA) system of control, electric current, vibration, temperature and monitor and analyze, and can realize unit vitals as the status monitoring work of generator, pylon, driving-chain, impeller etc.But the correlativity of this monitoring and ageing not outstanding, the fault that can find is limited to some large faults, can not be used for the early prediction of fault; Video monitoring means are mainly to rely on to be arranged on the inside and outside video capture device of wind-powered electricity generation unit the operation conditions of blower fan is monitored.The advantage of this monitoring means is that intuitive is stronger, and staff can get information about by image the ruuning situation of Fan Equipment, and shortcoming is to obtain the failure characteristics of device interior, can only after fault occurs, observe the situation of fault; Vibration monitoring is mainly, by the ad-hoc location in blower fan inside, acceleration transducer, the vibration information of collecting device are installed.Analyze by the time domain waveform figure to equipment under test and frequency domain spectrogram, inner body is made to etiologic diagnosis.The advantage of vibration monitoring is comparatively accurate to the diagnosis of fault, and shortcoming is the perspective poor of vibration monitoring, when vibration monitoring can be definite draw fail result time, fault often occurs; Oil Monitoring is by special fluid detecting sensor, the lubricating oil in blower fan main shaft bearing and gear case to be monitored, and by lubricating oil information, fault is made to diagnosis and early warning.The advantage of Oil Monitoring is comparatively responsive to losing efficacy, the mechanical failure that especially wearing and tearing cause, and shortcoming is that conventional oil liquid monitoring need to carry out in laboratory environment, is difficult to accomplish on-line monitoring, and needs to a great extent to rely on people's experience.Visible, in prior art, there is no a kind of equipment or method and can make efficient diagnosis and location to fan trouble.
Utility model content
The purpose of this utility model is to provide a kind of equipment, and this equipment can carry out effective monitoring to fan operation state, diagnosis and prediction fault.
To achieve these goals, the utility model provides a kind of fan condition supervisory system, this system comprises: data server and multiple unit watch-dog of intercommunication mutually, wherein each described unit watch-dog comprises: acceleration transducer, the drive disk assembly place that is arranged on unit, is configured to detect the vibration of described drive disk assembly; Fluid detecting sensor, along the gear box lubrication oil way setting of described unit, is configured to detect the state parameter of lubricating oil; And data collector, be configured to gather from the vibration signal of described acceleration transducer and the state parameter signal of described fluid detecting sensor, and gathered signal is outputed to described data server; And described data server, be configured to store and analyze the signal receiving from described data collector, to obtain monitored results.
Alternatively, described data server is also configured to the signal receiving from described data collector and the threshold value setting in advance to compare, and in the time meeting or exceeding described threshold value, failure judgement position also generates alerting signal.
Alternatively, described data server also comprises: warning device, is configured to generate and send warning message to mobile terminal according to described alerting signal.
Alternatively, described drive disk assembly comprises: main shaft, gear case and generator; And described acceleration transducer is two axle acceleration sensors and/or 3-axis acceleration sensor.
Alternatively, described acceleration transducer comprises: be separately positioned on the 3-axis acceleration sensor at main shaft bearing place, gearbox output shaft bearing place and generator driving end bearing place, and be separately positioned on two axle acceleration sensors at slow speed turbine stage bearing, intergrade bearing and ring gear place and the described generator non-transmision end bearing place of described gear case.
Alternatively, described fluid detecting sensor comprises following one at least: abrasive particle sensor, humidity sensor and quality sensor, and wherein, described abrasive particle sensor is configured to detect the oil liquid abrasive grain of described lubricating oil; Described humidity sensor is configured to detect the fluid humidity of described lubricating oil; And described quality sensor is configured to detect the Oil Quality of described lubricating oil.
Alternatively, described data server also comprises: server-side database, is configured to the signal that storage receives from described data collector.
Alternatively, this system also comprises remote control equipment, and this remote control equipment is connected with described data server by network, is configured to access described data server and controls described system operation.
By technique scheme, utilize acceleration transducer and fluid detecting sensor to monitor in real time the vibration of each drive disk assembly in each unit and the state of lubricating oil, can realize localization of fault and the prediction to possible breakdown accurately.The technical scheme of utilizing the utility model to provide, not only can accurately locate the fault having occurred, can also predict the fault that may occur, so that technician judges processing.
Other feature and advantage of the present utility model are described in detail the embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is to be used to provide further understanding of the present utility model, and forms a part for instructions, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 is the fan condition supervisory system structural representation according to the utility model embodiment;
Fig. 2 is the acceleration transducer setting position schematic diagram according to the utility model embodiment;
Fig. 3 is the fluid detecting sensor set-up mode schematic diagram according to the utility model embodiment;
Fig. 4 is the fan condition supervisory system flow chart of data processing schematic diagram according to the utility model embodiment;
Fig. 5 is the fan condition monitoring system alarming schematic flow sheet according to the utility model embodiment; And
Fig. 6 is the fan condition method for supervising schematic flow sheet according to the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.
Fig. 1 is the fan condition supervisory system structural representation according to the utility model embodiment.As shown in Figure 1, the fan condition supervisory system that the utility model embodiment provides can comprise: data server 5 and multiple unit watch-dog of intercommunication mutually, wherein each described unit watch-dog comprises: acceleration transducer 1, the drive disk assembly place that is arranged on unit, is configured to detect the vibration of described drive disk assembly; Fluid detecting sensor 2, along the gear box lubrication oil way setting of described unit, is configured to detect the state parameter of lubricating oil; And data collector 3, be configured to gather from the vibration signal of described acceleration transducer 1 and the state parameter signal of described fluid detecting sensor 2, and gathered signal is outputed to described data server 5; And described data server 5, be configured to store and analyze the signal receiving from described data collector, to obtain monitored results.
By technique scheme, utilize acceleration transducer 1 and fluid detecting sensor 2 to monitor in real time the vibration of each drive disk assembly in each unit and the state of lubricating oil, can realize localization of fault and the prediction to possible breakdown accurately.The technical scheme of utilizing the utility model to provide, not only can accurately locate the fault having occurred, can also predict the fault that may occur, so that technician judges processing.
In embodiment, can power to data collector 3 with 24V direct supply, this data collector 3 can for example, carry out physical connection by data cable line and sensor (, acceleration transducer 1 and fluid detecting sensor 2), and is responsible for each sensor driven by power is provided.This data collector 3 can be supported multiple bus protocol, includes but not limited to CAN bus, MODBUS RTU etc.
Preferably, the data collector 3 in the present embodiment can adopt Linux embedded system, can carry out renewal and the support software expansion of firmware version.Data collector 3 can internal memory (for example, 512M internal memory), can realize sensor signal is carried out to this locality storage.By internal memory, for example, can in the time of communication failure, preserve the sensor detection information historical record within a week.
In the embodiment shown in Fig. 1, data server 5 can communicate by wind energy turbine set field network equipment 4 and each data collector 3.The network equipment 3 can comprise hub and switch.By the network equipment 3, can carry out networking to the data collector of each blower fan inside 3 and wind energy turbine set server end, can for networking (for example, in Ethernet) every data collector 3 distributes fixing IP address, can be by server end (, data server 5) every data collector 3 is conducted interviews, extract wind-powered electricity generation unit sensing data, data collector parameter is set and upgrades the operations such as data collector firmware version to carry out.In embodiment, data collector 3 can carry out physical connection by twisted-pair feeder with the network equipment 4, adopts ICP/IP protocol to communicate.In different embodiments, data collector 5 can carry line interface or wireless transmission/reception module, intercoms mutually with the mode by wired or wireless and data server 5.
In a preferred embodiment, data server 5 also comprises: warning device (not shown), is configured to generate and send warning message to mobile terminal according to described alerting signal; And server-side database (not shown), be configured to the signal that storage receives from described data collector 3.In addition, can carry out conditioning setting to the data collector of blower fan inside 3 by data server 5 technician, blower fan is carried out to differentiation management, therefore, data server 5 also comprises human-computer interface device (not shown).
Fig. 2 is the acceleration transducer setting position schematic diagram according to the utility model embodiment.Main drive disk assembly in wind-powered electricity generation unit is shown in Fig. 2, has comprised: main shaft, gear case and generator, be connected by shaft coupling between each drive disk assembly.For the vibration to different drive disk assemblies detects, the acceleration transducer using in the utility model embodiment can be diaxon acceleration transducer and/or 3-axis acceleration sensor.Figure 2 illustrates setting position and the type of optional acceleration transducer.Wherein, at main shaft bearing place, gearbox output shaft bearing place and generator driving end bearing place can arrange respectively a 3-axis acceleration sensor, at slow speed turbine stage bearing, intergrade bearing and ring gear place and the described generator non-transmision end bearing place of described gear case, two axle acceleration sensors can be set respectively.It should be noted that, the position of acceleration transducer and type can for example, be selected according to unit actual conditions (set structure type).In a preferred embodiment, the sensor for detection of drive disk assembly that the utility model uses is for carrying out the vibration transducer that three axles (being x, y, z) speed and acceleration integrated data gather to gearbox of wind turbine and main shaft bearing.Can be successively by the detection position numbering of sensor, for example, measuring point 1-17 in Fig. 2, so that data identification and post-processed.
In embodiment, can select the type of acceleration transducer according to the characteristic of vibration.For example, because main shaft slewing rate is lower, therefore, the acceleration transducer arranging at main shaft bearing place can be low frequency acceleration transducer.The setting position of sensor can arrange according to unit concrete condition, for example, can be at gear case slow speed turbine stage (for example, planet carrier bearing place), casing middle part (for example, corresponding to the top of ring gear) and rear box is (for example, meet intergrade casing place) adopt respectively three two axle acceleration sensors, adopt a 3-axis acceleration sensor at output shaft place, gear case rear portion, at the driving end of generator (for example, connect gearbox output shaft) bearing place and the bearing place of non-transmision end adopted respectively a 3-axis acceleration sensor and two axle acceleration sensors.By above-mentioned embodiment, adopt multiple vibration transducers can strengthen the precision of fault diagnosis.
Fig. 3 is the fluid detecting sensor set-up mode schematic diagram according to the utility model embodiment.As shown in Figure 3, can comprise following one at least according to the fluid detecting sensor 2 of the utility model embodiment: described abrasive particle sensor 103 is configured to detect the oil liquid abrasive grain of described lubricating oil; Described humidity sensor 104 is configured to detect the fluid humidity of described lubricating oil; Described quality sensor 105 is configured to detect the Oil Quality of described lubricating oil.In the embodiment shown in Fig. 3, the lubricating oil to be detected signal piping 102 of flowing through, abrasive particle sensor 103, humidity sensor 104 and quality sensor 105 can be connected in signal piping 102 with random order.In different embodiments, abrasive particle sensor 103 can be induction abrasive particle sensor, can be also ultrasonic type abrasive particle sensor.In embodiment, humidity sensor 104 and quality sensor 105 can directly see through tube wall insertion and be arranged in signal piping 102.Preferably, humidity sensor 104 and quality sensor 105 are positioned at signal piping 102 bottoms with abundant dip lubrication oil.In one embodiment, data collector 3 can gather lubricating oil detection signal from abrasive particle sensor 103, humidity sensor 104 and quality sensor 105 via testing circuit 101.In different embodiments, data collector 3 can directly gather lubricating oil detection signal from abrasive particle sensor 103, humidity sensor 104 and quality sensor 105, and can provide driving to abrasive particle sensor 103 and quality sensor 105.
Fig. 4 is the fan condition supervisory system flow chart of data processing schematic diagram according to the utility model embodiment.As shown in Figure 4, according to the fan condition supervisory system of the utility model embodiment except drive disk assembly vibration signal and lubricating oil state parameter signal that can Real-time Obtaining sensor, server-side database can also be by carrying out corresponding handling procedure and data handling procedure, in real time obtained sensor signal (or data) (is for example analyzed, vibration detection signal is carried out to FFT conversion to carry out spectrum analysis, and oil liquid abrasive grain signal is carried out to statistical analysis etc.).By analyzing, can determine gearbox of wind turbine and main shaft bearing inoperative component according to statistical data, for carrying out fault judgement, technician provides foundation.
In embodiment, data server 5 by the signal receiving from described data collector 3 and the threshold value that sets in advance (for example can also be configured to, vibration threshold or lubricating oil state parameter threshold value) compare, and in the time meeting or exceeding described threshold value, failure judgement position also generates alerting signal.Fig. 5 is the fan condition monitoring system alarming schematic flow sheet according to the utility model embodiment.As shown in Figure 5, in an illustrative embodiments, in the time that data server 5 need to be reported to the police according to data comparative result judgement, the failure message that predefined alert program module can provide data server 5 (for example, abort situation, fault category etc.) send to note compiling module and carry out note establishment, then can the alarming short message that comprises abort situation and fault category weaving be sent to the mobile device presetting by GSM transmitter module, be beneficial to process the fault of wind-powered electricity generation unit within the shortest time.
In order to make full use of the function of the system that the utility model provides, in a preferred embodiment, system can also comprise remote control equipment, this remote control equipment can be connected with described data server by network, is configured to access described data server and controls described system operation.For example, can utilize remote control equipment to be connected with the data server of wind energy turbine set by internet, can conduct interviews to server-side database by remote control equipment, wind-powered electricity generation unit monitor message is extracted and according to diagnostic result, data server system modified, and by alarm set etc.
In the above-described embodiment, data server 5 can provide data analysis tool to detect data to wind-powered electricity generation unit and further analyze, so that the failure stage to gearbox of wind turbine and main shaft bearing and trouble location are made judgement more accurately.In the present embodiment, data server 5 can for example, communicate by internet and remote control equipment (, Terminal Server Client) by networked devices.For example, by Web server, Terminal Server Client can use browser to browse the monitor message of wind-powered electricity generation unit, and submits diagnostic message to, or the parameter of fan condition supervisory system is modified.
Fig. 6 is the fan condition method for supervising schematic flow sheet according to the utility model embodiment.As shown in Figure 6, embodiment of the present utility model also provides a kind of fan condition method for supervising, comprising: S602, detects the state parameter of the vibration of unit drive disk assembly and the gear box lubricating oil of described unit by sensor; S604, gathers vibration signal and state parameter signal from described sensor; And S606, store and analyze described vibration signal and described state parameter signal to obtain monitored results.By technique scheme, utilize acceleration transducer and fluid detecting sensor to monitor in real time the vibration of each drive disk assembly in each unit and the state of lubricating oil, can realize localization of fault and the prediction to possible breakdown accurately.The technical scheme of utilizing the utility model to provide, not only can accurately locate the fault having occurred, can also predict the fault that may occur, so that technician judges processing.
In embodiment, the step of the described vibration signal of described analysis and described state parameter signal can comprise: described vibration signal and/or described state parameter signal are compared with the threshold value setting in advance.
In a preferred embodiment, said method can also comprise: in the time that described vibration signal and/or described state parameter signal meet or exceed described threshold value, failure judgement position also generates alerting signal; And generated alerting signal is wirelessly transmitted to mobile terminal.Alerting signal as an example can comprise in following information one at least: fault blower fan, fault type, fault priority and time of failure.
The said system of utilizing the utility model to provide, has improved the diagnostic accuracy to wind-powered electricity generation unit fault, superior performance greatly by comprehensive detection and the analysis of the vibration signal to gearbox of wind turbine, main shaft bearing and generator and fluid data.By the detection of the ferromagnetism in lubricating oil fluid and non ferromagnetic debris, and carry out statistical analysis, can accurately locate the trouble unit in gear case.By detection and the frequency-domain analysis of the vibration signal to gear case and main shaft bearing, can understand failure mode and the failure mode of each part.Data collector 3 by compatible communication carries out collection simultaneously, real-time to vibration and fluid signal, has guaranteed the real time on-line monitoring to wind-powered electricity generation unit.By the network equipment 4, all Monitoring Data of all monitoring equipments of whole wind field are sent to data server 5, guaranteed unified monitoring and the unified allocation of resources to all blower fans to whole wind electric field blower state.The database of data server can carry out standing storage to the monitor data of wind-powered electricity generation unit, is convenient to technician and inquires about and can comprehensively understand running of wind generating set situation according to historical data.Data server can (for example, by processing or routine analyzer) carry out further mathematical analysis to the data that collect, thereby the state of blower fan is had to more deep understanding.Foundation comprises that the system of remote supervisory and control(ling) equipment can guarantee that technician can make diagnosis to the state of wind-powered electricity generation unit anywhere or anytime, has improved validity and the promptness of monitoring system greatly.By GSM SMS alarm can be within the shortest time notification technique personnel, the fault of wind-powered electricity generation unit is handled it, farthest avoid causing the loss of wind energy turbine set.
Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition each the concrete technical characterictic described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible array modes.
In addition, also can carry out combination in any between various embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (8)
1. a fan condition supervisory system, is characterized in that, this system comprises: data server and multiple unit watch-dog of intercommunication mutually, wherein
Each described unit watch-dog comprises:
Acceleration transducer, is arranged on the drive disk assembly place of unit, is configured to detect the vibration of described drive disk assembly;
Fluid detecting sensor, along the gear box lubrication oil way setting of described unit, is configured to detect the state parameter of lubricating oil; And
Data collector, is configured to gather from the vibration signal of described acceleration transducer and the state parameter signal of described fluid detecting sensor, and gathered signal is outputed to described data server; And
Described data server, is configured to store and analyze the signal receiving from described data collector, to obtain monitored results.
2. system according to claim 1, it is characterized in that, described data server is also configured to the signal receiving from described data collector and the threshold value setting in advance to compare, and in the time meeting or exceeding described threshold value, failure judgement position also generates alerting signal.
3. system according to claim 2, is characterized in that, described data server also comprises: warning device, is configured to generate and send warning message to mobile terminal according to described alerting signal.
4. system according to claim 1, is characterized in that, described drive disk assembly comprises: main shaft, gear case and generator; And described acceleration transducer is two axle acceleration sensors and/or 3-axis acceleration sensor.
5. system according to claim 1, it is characterized in that, described acceleration transducer comprises: be separately positioned on the 3-axis acceleration sensor at main shaft bearing place, gearbox output shaft bearing place and generator driving end bearing place, and be separately positioned on two axle acceleration sensors that are positioned at slow speed turbine stage bearing place, intergrade bearing place and ring gear top and described generator non-transmision end bearing place on described gear case body.
6. system according to claim 1, is characterized in that, described fluid detecting sensor comprises following one at least: abrasive particle sensor, humidity sensor and quality sensor, wherein,
Described abrasive particle sensor is configured to detect the oil liquid abrasive grain of described lubricating oil;
Described humidity sensor is configured to detect the fluid humidity of described lubricating oil; And
Described quality sensor is configured to detect the Oil Quality of described lubricating oil.
7. system according to claim 1, is characterized in that, described data server also comprises:
Server-side database, is configured to the signal that storage receives from described data collector.
8. according to the system described in any one claim in claim 1-7, it is characterized in that, this system also comprises remote control equipment, and this remote control equipment is connected with described data server by network, is configured to access described data server and controls described system operation.
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| CN201320818343.XU CN203673317U (en) | 2013-12-12 | 2013-12-12 | Fan condition monitoring system |
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| CN201320818343.XU CN203673317U (en) | 2013-12-12 | 2013-12-12 | Fan condition monitoring system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809556A (en) * | 2013-12-12 | 2014-05-21 | 神华集团有限责任公司 | Fan state monitoring system and method |
| CN104251719A (en) * | 2014-09-30 | 2014-12-31 | 华北电力大学（保定） | Vibration signal processing system with state monitoring function and method |
| CN104596575A (en) * | 2014-12-25 | 2015-05-06 | 新疆新能钢结构有限责任公司 | Fan tower drum safe operation monitoring device and application method thereof |
| CN109163871A (en) * | 2018-11-09 | 2019-01-08 | 天地科技股份有限公司上海分公司 | Flitting rocker arm comprehensive state parameter on-line monitoring device |
| CN110873788A (en) * | 2018-08-30 | 2020-03-10 | 中国石油天然气股份有限公司 | Equipment friction and lubrication on-line monitoring system based on multiple monitoring information |
| CN111207204A (en) * | 2020-03-31 | 2020-05-29 | 广东工业大学 | Online monitoring, early warning and disposal method for gear box lubricating oil of wind generating set |
| CN112731905A (en) * | 2020-12-18 | 2021-04-30 | 江苏恩达通用设备集团有限公司 | Unit control system, method and device |
| CN113435705A (en) * | 2021-06-02 | 2021-09-24 | 上海电气风电集团股份有限公司 | Bearing monitoring method and system and computer readable storage medium |
-
2013
- 2013-12-12 CN CN201320818343.XU patent/CN203673317U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103809556A (en) * | 2013-12-12 | 2014-05-21 | 神华集团有限责任公司 | Fan state monitoring system and method |
| CN104251719A (en) * | 2014-09-30 | 2014-12-31 | 华北电力大学（保定） | Vibration signal processing system with state monitoring function and method |
| CN104596575A (en) * | 2014-12-25 | 2015-05-06 | 新疆新能钢结构有限责任公司 | Fan tower drum safe operation monitoring device and application method thereof |
| CN104596575B (en) * | 2014-12-25 | 2017-08-11 | 新疆新能钢结构有限责任公司 | Blower fan tower barrel safe operation monitoring device and its application method |
| CN110873788A (en) * | 2018-08-30 | 2020-03-10 | 中国石油天然气股份有限公司 | Equipment friction and lubrication on-line monitoring system based on multiple monitoring information |
| CN109163871A (en) * | 2018-11-09 | 2019-01-08 | 天地科技股份有限公司上海分公司 | Flitting rocker arm comprehensive state parameter on-line monitoring device |
| CN111207204A (en) * | 2020-03-31 | 2020-05-29 | 广东工业大学 | Online monitoring, early warning and disposal method for gear box lubricating oil of wind generating set |
| CN112731905A (en) * | 2020-12-18 | 2021-04-30 | 江苏恩达通用设备集团有限公司 | Unit control system, method and device |
| CN113435705A (en) * | 2021-06-02 | 2021-09-24 | 上海电气风电集团股份有限公司 | Bearing monitoring method and system and computer readable storage medium |
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