CN106813923A - A kind of generator bearing failure detector and detection method - Google Patents
A kind of generator bearing failure detector and detection method Download PDFInfo
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- CN106813923A CN106813923A CN201510860036.1A CN201510860036A CN106813923A CN 106813923 A CN106813923 A CN 106813923A CN 201510860036 A CN201510860036 A CN 201510860036A CN 106813923 A CN106813923 A CN 106813923A
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Abstract
The present invention relates to motor device technical field, more particularly to a kind of generator bearing failure detector and detection method.The generator bearing failure detector that the present invention is provided, including detection terminal, controller, oil quality analyzer and testing agency, oil quality analyzer are used for oily composition in detection bearing seal chamber；Compared with the method for existing measurement vibration signal or temperature signal, the physical parameter such as measurement temperature, viscosity and oily composition in the application, the semaphore of detection is less, measures simpler convenience, signal transacting more simply measures more accurate, and the accuracy to bearing fault detection is higher；In addition, by measuring various physical signallings come the ruuning situation of comprehensive descision bearing, the result judged bearing fault is more accurate；In addition, judging whether bearing breaks down by judging the content of metallic element in generator jacking oil oil, the influence of factor interfered by outside is smaller, therefore more accurate for the judgement of bearing fault.
Description
Technical field
The present invention relates to technical field of motors, more particularly to a kind of generator bearing fault detect
Device and detection method.
Background technology
At present, China's power industry comes into large-sized unit, bulk power grid, high voltage, automation
Developing stage.From power generation, operation of power networks, the economy of management and power supply quality etc.
From the point of view of aspect, power network is bigger, and the single-machine capacity of main force's unit also should be bigger, single-machine capacity increase,
Then unit capacity cost declines, and material consumption reduction, efficiency increases, and its economic performance is also got over
It is good.It can be seen that, the development of high-rating generator occupies critically important status in power industry.Therefore,
Ensure that high-rating generator runs well to be significant.
Bearing is the important component of high-rating generator, its performance and quality largely shadow
Ring the operation conditions for sending out large-size machine, therefore sealing property, profit to high-rating generator bearing
Slip energy, impact resistance, long-life and reliability have requirement very high, material, manufacturing process
Special design is also required to etc. various aspects.When high-rating generator breaks down, often just embody
On bearing, normal operation of the bearing to generator plays very important effect, bearing fault
Timely detection seem particularly critical.
And detect the method for bearing fault at present and be mainly the temperature or bearing by measuring bearing
Vibration state judged；The temperature for measuring bearing is mainly and for temperature sensor to be put into tool
There is the inner tube of closed bottom, drawn by lead, have pushing mechanism outside inner tube, in outer tube
The blocking mechanism in portion is engaged, and bilayer sleeve is located on the end cap of motor, makes the bottom of outer tube
It is in contact with the bearing block of motor, so that by temperature signal collection back to electrical connecting box；Measurement
The vibrations of bearing, the magnetic patch that can be pull-in on motor bearings is equipped with acceleration transducer head,
Magnetic patch it is lightweight, adhesive is good, big with bearing cotact area, makes acceleration transducer sensitive
Degree is high, it is ensured that vibration detection is accurate；But judge bearing by measuring the vibration signal of bearing
Whether need measurement signal amount relatively many, measure comparatively laborious, the effect of signal transacting if breaking down
Rate is relatively low, causes the accuracy to the fault detect of bearing relatively low.Although in addition, existing
Detection method can to a certain extent detect the operational situation of bearing, but only by measuring vibration
Or the single signal amount such as temperature judges the fault state of bearing；Can not well to bearing
Operation conditions effectively judged, the result of judgement is it is possible that certain deviation.In addition,
The position of measurement is limited to, and can only measure certain fixed position of bearing, and accuracy of detection cannot be protected
Card.And said system is intelligent poor, it is impossible to realize intelligent real-time detection and alarm.
The content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention is：Tradition judges whether the bearing of high-rating generator is sent out
During raw failure, judged by measuring the vibration signal or temperature signal of bearing,
But the vibration measurement of bearing is complex, and its semaphore is more numerous than larger, treatment
It is trivial, cause the accuracy to the fault detect of bearing relatively low；Meanwhile, in existing technology only
It is the fault state that bearing is judged by measurement temperature or vibration signal, it is impossible to right well
Bearing operation conditions is effectively judged, and above-mentioned measuring method is intelligent poor, it is impossible to real
Existing intellectuality real-time detection and alarm.
(2) technical scheme
In order to solve the above-mentioned technical problem, examined the invention provides a kind of generator bearing failure
Survey device, including detection terminal, controller, at least one oil quality analyzer and at least one inspection
Mechanism is surveyed, the testing agency is located in bearing seal chamber, for detecting bearing seal chamber Nei Ding
The temperature and viscosity of shafting oil oil；The oil quality analyzer is connected with bearing seal chamber, for examining
Survey oily composition in bearing seal chamber；The controller respectively with testing agency and oil quality analyzer
Connection, for the temperature, viscosity and the oily twocomponent signal that receive and processing detection is arrived, and will place
Signal after reason sends detection terminal system to, and the detection terminal system is used for basis and receives
Signal judge the working condition of bearing.
Preferably, the oil quality analyzer is connected by oil pipeline with bearing seal chamber, described
One end of oil pipeline connects with oil quality analyzer, and the other end is provided with described for opening and closing
The on off mechanism of oil pipeline, the on off mechanism is located in the accommodating chamber.
Preferably, the on off mechanism includes first connecting rod, transmission mechanism and actuating unit, institute
The one end for stating first connecting rod is provided with plug, and the other end is located in oil pipeline and passes through transmission mechanism
It is connected with actuating unit, the end of the oil pipeline is provided with changeover portion in bearing seal chamber,
The outer end of the changeover portion is provided with the groove coordinated with the plug, and the groove passes through changeover portion
The oil inlet passage of upper setting is connected with oil pipeline, is slided by actuating unit drivening rod, is pushed away
Dynamic plug is separated or fitted with the groove, realizes the opening or closure of oil pipeline.
Preferably, the plug is spherical shape, and the groove is cone tank.
Preferably, the first connecting rod is vertically provided with connecting plate, described away from one end of plug
One connecting rod is connected by connecting plate with transmission mechanism；The transmission mechanism includes second connecting rod, the
Three connecting rods and the fix bar being fixed on oil pipeline inwall, one end of the second connecting rod and company
Fishplate bar is hinged away from one end of first connecting rod, and the other end is hinged with one end of the third connecting rod,
The middle part of the third connecting rod is hinged with fix bar；The actuating unit includes being fixed on the 3rd company
The adsorption piece of the bar other end and be capable of adhesive adsorption piece first be fixed on oil pipeline inwall
Electromagnet.
Preferably, spring is additionally provided with the oil pipeline between the changeover portion inwall and connecting plate,
The spring housing is connected in the outside of first connecting rod, and one end of the spring with connecting plate, separately
One end is connected with the inwall of changeover portion.
Preferably, the testing agency includes scalable connecting rod and located at scalable connection rod end
At least one temperature sensor and viscosimeter in portion.
Preferably, the testing agency also includes the protective sheet being fixed on bearing seal cavity wall,
Circular hole is offered in the protective sheet, scalable connecting rod can be slided through the circular hole.
Preferably, the controller includes A/D modular converters, Isolation Amplifier Module and pulse frequency
Rate detection module, the A/D modular converters are used to for analog signalses to be converted to data signal,
The Isolation Amplifier Module is used to eliminate the interference signal run into during signal transmission, keeps signal steady
It is fixed, and waveforms amplitude is amplified；The pulse frequency detection module is used for detection waveform
Frequency values.
Preferably, also include for current signal to be converted into voltage signal in the controller
Conversion circuit.
Preferably, the controller also includes for screening and tracks the binary conversion treatment electricity of signal
Road.
Preferably, the detection terminal system includes online monitoring platform and system debug platform.
Present invention also offers a kind of generator bearing fault detection method, using any of the above-described
Generator bearing failure detector described in, comprises the following steps：
S1, starts detection means, and bearing seal chamber is measured by oil quality analyzer and testing agency
Interior oily temperature, viscosity and oily twocomponent signal；
S2, the temperature, viscosity and oily twocomponent signal that simultaneously processing detection is arrived are received using controller,
And send the signal after treatment to detection terminal system；
S3, the detection terminal system judges the working condition of bearing according to the signal for receiving.
Preferably, in step s 2, scalable connecting rod is changed in bearing seal by controller
Position in chamber, measures temperature, the viscosity signal of the oil in bearing seal chamber in diverse location.
15th, generator bearing failure detector according to claim 13, it is characterised in that：
In step s3, when temperature, viscosity and oily composition one of them or more than one monitoring letter
When number occurring abnormal, detection terminal system control controller is classified does not alarm.
(3) beneficial effect
Above-mentioned technical proposal of the invention has the following advantages that：The invention provides a kind of generator
Group bearing fault detection device, including detection terminal, controller, at least one oil quality analyzer
With at least one testing agency, the temperature of oil in bearing seal chamber is detected by testing agency
And viscosity, the oil quality analyzer connects with bearing seal chamber；With existing measurement vibration signal
Or the method for temperature signal is compared, the thing such as measurement temperature, viscosity and oily composition in the application
Reason parameter, the semaphore of detection is less, measures simpler convenience, and signal transacting is more accurate,
Accuracy to bearing fault detection is higher；In addition, by measuring various physical signallings come comprehensive
Judge the failure situation of bearing, the result judged bearing fault is more accurate；Further, since
Bearing breaks down, and improper severe friction occurs, can cause the metallic element of bearing wear,
Enter into the oil in bearing seal chamber, change oily component, therefore by oil quality analyzer,
Judge the content of metallic element in oil, and then judge whether bearing breaks down, this kind of mode
The disturbing factor in the external world can be evaded compared with vibration and temperature signal, therefore for bearing fault
Judgement it is more accurate.
Brief description of the drawings
Description of above-mentioned and/or additional aspect the advantage of the present invention from combination accompanying drawings below to embodiment
In will be apparent and be readily appreciated that, wherein：
Fig. 1 is the structural representation of generator bearing failure detector；
Fig. 2 is the structural representation of testing agency；
Fig. 3 is the structural representation of on off mechanism open mode；
Fig. 4 is the structural representation of on off mechanism closure state；
Fig. 5 is temperature information acquisition system block diagram；
Fig. 6 is viscosity information acquisition system block diagram；
Fig. 7 is oil quality analysis system block diagram；
Fig. 8 is the FB(flow block) that bearing fault is judged in the present invention
Fig. 9 is overall control flow figure of the invention.
Corresponding relation in wherein Fig. 1 to Fig. 9 between reference and component names is：
1st, bearing seal chamber, 11, bearing, 2, detection terminal system, 3, oil quality analyzer,
4th, oil pipeline, 41, changeover portion, 411, groove, 412, oil inlet passage, 5, break-make machine
Structure, 51, first connecting rod, 511, plug, 512, connecting plate, 52, spring, 53, second
Connecting rod, 54, third connecting rod, 55, fix bar, the 56, first electromagnet, 57, adsorption piece, 6,
Testing agency, 61, scalable connecting rod, 62, temperature sensor, 63, viscosimeter, 64,
Protective sheet.
Specific embodiment
In the description of the invention, it is necessary to explanation, term " " center ", " longitudinal direction ", " horizontal stroke
To ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ",
" bottom ", " " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings
Or position relationship, it is for only for ease of and describes the present invention and simplify to describe, rather than instruction or dark
Show meaning device or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.Additionally, term " first ", " second " are only used
In description purpose, and it is not intended that indicating or implying relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited,
Term " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixed connect
Connect, or be detachably connected, or be integrally connected；Can mechanically connect, it is also possible to
It is electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, can specific shape
Condition understands above-mentioned term concrete meaning in the present invention.Additionally, in the description of the invention,
Unless otherwise indicated, " multiple " is meant that two or more.
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below will knot
Close the embodiment of the present invention in accompanying drawing, the technical scheme in the embodiment of the present invention is carried out it is clear,
It is fully described by, it is clear that described embodiment is a part of embodiment of the invention, without
It is whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
There is the every other embodiment obtained on the premise of making creative work, belong to the present invention
The scope of protection.
As shown in figure 1, the invention provides a kind of generator bearing failure detector, bag
Include detection terminal, controller, at least one oil quality analyzer and at least one testing agency, institute
Testing agency is stated in the bearing seal chamber, for detect in bearing seal chamber the temperature of oil and
Viscosity；The oil quality analyzer is connected with bearing seal chamber, for detecting oil in bearing seal chamber
Matter composition；The controller is connected with testing agency and oil quality analyzer respectively, for receive and
Temperature, viscosity and oily twocomponent signal that processing detection is arrived, and the signal after treatment is sent to
Detection terminal system, the detection terminal system is used to judge bearing according to the signal for receiving
Working condition.The generator bearing failure detector that the present invention is provided shakes with existing measurement
The method of dynamic signal or temperature signal is compared, and its measurement is temperature, viscosity and oily composition
Etc. physical parameter, the semaphore of detection is less, measures simpler convenience, and signal transacting is more
Simple measurement is more accurate, and the accuracy to bearing fault detection is higher；In addition, by measurement
Various physical signallings carry out the failure situation of comprehensive descision bearing, and the result judged bearing fault is more
Plus it is accurate；Further, since bearing breaks down, there is improper severe friction, can cause
The metallic element of bearing wear, enters into the oil in bearing seal chamber, changes oily component,
Therefore by oil quality analyzer, judge the content of metallic element in oil, and then judge that bearing is
No failure, this kind of mode with vibration and temperature signal compare can evade extraneous interference because
Element, thus it is more accurate for the judgement of bearing fault.
Preferably, it is as shown in figure 1, the detection is provided with four groups and relative located at bearing seal
On two internal faces in chamber, the oil quality analyzer is provided with two, and bearing seal chamber is detected respectively
Opposite sides fluid composition；Can by setting multigroup testing agency and multiple oil quality analyzers
Fluid to the multiple positions in bearing seal chamber is measured, and reduces the probability of measurement error,
Ensure the accuracy of measurement.
Preferably, the oil quality analyzer is connected by oil pipeline with bearing seal chamber, described
One end of oil pipeline connects with oil quality analyzer, and the other end is provided with described for opening and closing
The on off mechanism of oil pipeline, the on off mechanism is located in the accommodating chamber；Do not detecting oil
When matter composition on off mechanism can close, now the oil in bearing seal chamber will not enter oil
In matter analyzer, the useless working time of oil quality analyzer can be reduced, improve oil quality analyzer
Service life；When needing to measure the oily composition in bearing seal chamber, beat on off mechanism
Open, oil quality analyzer is connected with bearing seal chamber, now the oil in bearing seal chamber enters simultaneously
Full of oil quality analyzer, now oil quality analyzer carries out reality to the composition of oil in bearing seal chamber
When detect, judge whether metallic element in oil exceeds standard.
Alternatively, the on off mechanism includes first connecting rod, transmission mechanism and actuating unit, institute
The one end for stating first connecting rod is provided with plug, and the other end is located in oil pipeline and passes through transmission mechanism
It is connected with actuating unit, the end of the oil pipeline is provided with changeover portion in bearing seal chamber,
The outer end of the changeover portion is provided with the groove coordinated with the plug, and the groove passes through changeover portion
The oil inlet passage of upper setting is connected with oil pipeline, is slided by actuating unit drivening rod, is pushed away
Dynamic plug is separated or fitted with the groove, realizes the opening or closure of oil pipeline.
Alternatively, the plug is spherical shape, and the groove is cone tank, when in off position
When spherical shape plug obstruct oil of being fitted with the internal face of cone tank enter oily by oil pipeline
Analyzer；In open mode, separated between spherical shape plug and the internal face of cone tank, produced
The certain gap of life, so that oil is entered in oil quality analyzer by oil pipeline.
It should be noted that the plug and groove are not limited only to above-mentioned shape, also may be used
Be plug be it is spherical and groove is the semi-circular groove being engaged with plug, or plug and groove it is equal
It is rectangle, oil pipeline can be opened or close as long as the cooperation of plug and groove can be realized
Purpose, just belong to the design philosophy of the application, protection scope of the present invention should be belonged to.
Specifically, oil transportation pipe end configuration as shown in Figure 3 and Figure 4, the first connecting rod away from
One end of plug is vertically provided with connecting plate, and the first connecting rod is connected by connecting plate with transmission mechanism
Connect；The transmission mechanism includes second connecting rod, third connecting rod and is fixed on oil pipeline inwall
Fix bar, the one end of one end of the second connecting rod with connecting plate away from first connecting rod is hinged,
The other end is hinged with one end of the third connecting rod, and middle part and the fix bar of the third connecting rod are cut with scissors
Connect；The actuating unit includes being fixed on the adsorption piece of the third connecting rod other end and is fixed on oil transportation
The first electromagnet for being capable of adhesive adsorption piece on inner-walls of duct；Preferably, the adsorption piece is
Second electromagnet, certain adsorption piece can also can be by for magnet or iron, cobalt, nickel etc.
First electromagnetic actuation material can realize the purpose of the application.Now first connecting rod, second
Connecting rod, third connecting rod composition four-bar mechanism, first connecting rod is can control by the motion of four-bar mechanism
Moved along a straight line in petroleum pipeline；Alternatively, it is defeated between the changeover portion inwall and connecting plate
It is additionally provided with spring in oil-piping, the spring housing is in the outside of first connecting rod, and the spring
One end is connected with connecting plate, and the other end is connected with the inwall of changeover portion.
In motion process, when the solenoid is energized, its state is as shown in figure 3, the first electromagnetism
Iron and the second electromagnetic actuation, second connecting rod is promoted by the other end of leverage third connecting rod,
And the effect by second connecting rod, connecting plate controls first connecting rod to outwardly open, now at spring
In compressive state, plug is separated with the groove inner wall face on changeover portion, and ballhead is produced with cone tank
Raw gap, so that jacking oil enters petroleum pipeline.When electromagnet is powered off, its state such as Fig. 4
Shown, now the first electromagnet and the second electromagnet unclamp, in the thrust and apical axis oil pressure of spring
In the presence of power, first connecting rod is inwardly moved, until spherical type head and the cone tank phase of first connecting rod
It coincide, now spring recovers deformation.Now petroleum pipeline end-enclosed, jacking oil cannot be introduced into defeated
Oil pipe.
Preferably, the testing agency includes scalable connecting rod and located at scalable connection rod end
At least one temperature sensor and viscosimeter in portion；Wherein as shown in Fig. 2 the TEMP
Device and the viscosimeter are equipped with two, the survey that can so avoid independent sampled measurements from being brought
Amount error, reduces the probability of measurement error, improves measurement accuracy；Simultaneously because TEMP
Device and viscosimeter are provided in scalable connecting rod, and the scope therefore, it is possible to measurement is wider,
Multimetering can be carried out, the accuracy of sampled measurements is higher.
Preferably, the testing agency also includes the protective sheet being fixed on bearing seal cavity wall,
Circular hole is offered in the protective sheet, scalable connecting rod can be slided through the circular hole, institute
Stating protective sheet can fix and protect testing agency, and then protect scalable connecting rod and inner wire
Road is not influenceed by jacking oil.
Preferably, the controller includes A/D modular converters, Isolation Amplifier Module and pulse frequency
Rate detection module, the A/D modular converters are used to for analog signalses to be converted to data signal,
The Isolation Amplifier Module is used to eliminate the various interference run into during signal transmission, keeps signal steady
It is fixed.
The pulse frequency detection module is used for the frequency values of detection waveform；Wherein, the control
Also include being used in device current signal is converted into the conversion circuit of voltage signal and for screening simultaneously
Track the binary conversion treatment circuit of signal；It is described detection terminal system include online monitoring platform and
System debug platform.
Below come illustrate the controller of the application be how to enter trip temperature, viscosity and oil into
What go-on-go was surveyed；
As shown in figure 5, in collecting temperature signal, being moved by scalable connecting rod, make temperature
Degree sensor measures the temperature information of diverse location, and the current signal that will be detected by conversion
Circuit conversion is easy to electronic circuit to receive and treatment (the one of electronic circuit reception into voltage signal
As be 0~5V voltage signal, the electric jamming for anti-interference under industrial occasions is more, leads to
Cross isolation amplifying element to solve signal cross-talk)；Voltage signal after conversion amplifies mould by isolating
Block, is filtered amplification, by A/D modular converters after allowing, converts analog signals into numeral
Signal, and the data signal is sent to detection terminal system, detection terminal system is according to detection
To temperature signal whether within the temperature range of bearing normal work judge the work shape of bearing
Condition (fault state in other words).
As shown in fig. 6, when viscosity signal is gathered, viscosity system has power supply to be powered, control
Device processed controls scalable connecting rod to be fixed on different positions, uses the viscous of viscosity meter oil
Degree signal, and the waveform relevant with frequency is exported, then by Isolation Amplifier Module, filtered
Ripple and amplification, the amplitude of signal is amplified, and is then processed by binary conversion treatment circuit,
So that the waveform after amplifying turns into strict square wave output, and (waveform signal i.e. to frequency is sieved
Select and track)；The pulse frequency of square wave is entered by the pulse frequency detection module in controller again
Row detection, obtains corresponding frequency values, and corresponding gluing is converted the signal to by hind computation
Angle value, detection terminal system is transferred to by signal transmission system.When change extensible link
During position, above-mentioned steps are repeated, carry out measurement and the record of data.
As shown in fig. 7, when in collection oily twocomponent signal, detection terminal system sends control
Order to controller, controller is moved according to control command controlled motor, by driving petroleum pipeline
End actuators control the switch of oil transportation tube end, and when oil transportation tube end is opened, oil is logical
Petroleum pipeline into online oil quality analyzer is crossed, oil quality analyzer can obtain the interior of oil by detection
Portion's element, and detection structure is transferred back into detection terminal system.When oily content occurs larger change
Change, and metallic element amplification in oil it is larger when, then illustrate that bearing there occurs more serious
Abrasion.
As shown in figure 8, system overall control flow includes：Initial landing detects terminal system,
Authenticating user identification is carried out, and system is initialized.Subsequent start-up detecting system.Set
Timer, send control command, realize bottom temperature information collection, viscosity information collection and
Oil quality analysis, it is every to carry out a Data Detection at regular intervals according to the setting of timer,
Without persistently detecting, and testing result is returned into detection terminal system, and in detection terminal system
System interface real-time update shows；When the detected value of any one temperature sensor is beyond normal work
Oily temperature range under making, then it represents that bearing is likely to occur larger friction, generates a large amount of
Heat；Oily viscosity model under the detected value of any one viscosimeter is beyond normal work
Enclose, then it represents that the temperature of oil is raised or the influence of other factors changes oily viscosity, bearing
May have occurred certain exception；When the data of any one oil quality analyzer feedback are beyond normal
In the case of oil in element data scope, especially generate substantial amounts of metallic element, then table
Show that bearing wear is serious, it is impossible to normal work.When there are above-mentioned three kinds of situations simultaneously, then table
Show that bearing occurs in that abnormal violent abrasion, bearing breaks down, now by controller control
The devices such as buzzer are alarmed.There is any one in above-mentioned situation, then show that bearing is possible to
Occur abnormal.If not there are abnormal conditions, this group of data carry out record preservation, while etc.
Treat next group of detection.The command response of system is managed including system user, system environments is configured,
The part such as historical record is called, current information is preserved and system is exited, wherein, system user pipe
Reason is mainly used in changing the quantity and authority information of system user, and system environments is configured to configuration
The COM1 of system, historical record is called for checking historical record, and current information is preserved to be used
Backstage storage and derivation are carried out in the information that will be detected, system exits ends with system operation, and
The system of carrying out closing.
In system operation, after detecting that terminal system sends sense command, TEMP
Device, viscosimeter start detection, and carry out multimetering by extensible link, in real time by data
Detection terminal system is transferred to, while motor drives the motion of petroleum pipeline end mechanism, end is opened
Switch, jacking oil is entered into online oil quality analyzer, and final result is returned into detection
Terminal system.Detection terminal system data are recorded, and with historical data, normal data
It is compared, judges whether in normal range (NR), if there are any one data not in normal range (NR)
It is interior, then alarmed, and described in detail in display interface display abnormal conditions.
As shown in figure 9, present invention also offers a kind of generator bearing fault detection method,
Using the generator bearing failure detector as described in above-mentioned any one, comprise the following steps：
S1, starts detection means, and oil in bearing seal chamber is measured by oil quality analyzer and testing agency
The temperature of matter, viscosity and tenor signal；S2, receives and processes inspection using controller
Temperature, viscosity and the oily twocomponent signal for measuring, and send the signal after treatment to detection eventually
End system；S3, the detection terminal system judges the work shape of bearing according to the signal for receiving
Condition.
Wherein, in step s 2, position of the controller in bearing seal chamber is changed by controller
Put, measure temperature, the viscosity signal of the oil in bearing seal chamber in diverse location.
Alternatively, in step s3, when temperature, viscosity and metal element content signal occur one
It is individual or more than one
When abnormal, detection terminal system control controller is classified does not alarm.
Further, controller described in above-described embodiment is STM32 controllers, the detection
Terminal system includes online detection platform and system debug platform, and wherein on-line checking platform can use
In real-time monitoring viscosity information, system debug platform is used for failure when detecting system occurs abnormal
Search.
The generator bearing failure detector that the present invention is provided has following features：
1st, for the internal features of high-rating generator, carried out in real time using to bearing periphery jacking oil
The method of detection realizes the fault detect to the high-rating generator bearing in operating.
2nd, the detection to bearing periphery jacking oil includes gold in temperature, the viscosity of oil and the oil of oil
Belong to the part of composition three of element.
3rd, in detection process, the diverse location on bearing cavity wall is provided with multiple TEMPs
Device, viscosimeter and petroleum pipeline, while by petroleum pipeline end mechanism and being fixed with temperature sensor
With the design of the extensible link of viscosimeter, may be such that the temperature to bearing periphery jacking oil, glue
Metallic element carries out multi-point sampler and real-time monitoring in degree and oil, and test result is more accurate.
4th, in detection process, the composition of the temperature, viscosity and metallic element of oil can be by letter
Number transmission is sent to detection terminal system in real time.
5th, intelligent monitoring terminal system can be by the temperature to jacking oil, viscosity and metal unit
The record analysis of the compositional data of element, and contrasted with normal data value, to judge large-scale hair
Whether the bearing of motor breaks down, and and alarm.
With existing Technical comparing, it is an advantage of the invention that:
1st, judging bearing by the measurement to high-rating generator bearing periphery jacking oil parameter is
No to break down, method is simple, and does not interfere with the normal work of bearing.
2nd, it is distributed by multiposition, the much informations such as jacking oil temperature, viscosity, oil can be entered
Row measurement, it is ensured that the accuracy of measurement result.
3rd, the diverse location on bearing cavity wall be provided with multiple temperature sensors, viscosimeter and
Petroleum pipeline, at the same by petroleum pipeline end mechanism and be fixed with temperature sensor and viscosimeter can
The design of shrinking connecting-rod, by the DATA REASONING of diverse location difference measurement point, it is ensured that data
The validity and accuracy of detection.
4th, can be analyzed for substantial amounts of data and collect by intelligentized detection terminal system, so that real
Apply the bearing running status of alarm, on-line checking high-rating generator.
5th, eventually through multidata detection, analysis, large-scale generating can accurately and real-time be judged
The working order of machine bearing, carries out effectively judging and alarming to bearing fault, is high-rating generator
Normal operating provides reliable guarantee.
In sum, the invention provides a kind of generator bearing failure detector, including
Detection terminal, controller, at least one oil quality analyzer and at least one testing agency, pass through
Testing agency sets the temperature and viscosity of oil in detection bearing seal chamber, the oil quality analyzer with
Bearing seal chamber connects, for oily composition in detection bearing seal chamber；With existing survey
The method of amount vibration signal or temperature signal is compared, measurement temperature, viscosity and oil in the application
The physical parameters such as matter composition, the semaphore of detection is less, simpler convenience is measured, at signal
The simpler measurement of reason is more accurate, and the accuracy to bearing fault detection is higher；In addition, logical
The failure situation that various physical signallings carry out comprehensive descision bearing that measures is crossed, bearing fault is judged
Result is more accurate；Further, since bearing breaks down, there is improper severe friction,
The metallic element of bearing wear can be caused, is entered into the oil in bearing seal chamber, change oil
Component, therefore by oil quality analyzer, judge the content of metallic element in oil, and then judge
Whether bearing breaks down, and this kind of mode can evade the external world compared with vibration and temperature signal
Disturbing factor, thus it is more accurate for the judgement of bearing fault.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, and
It is non-that it is limited；Although being described in detail to the present invention with reference to the foregoing embodiments, ability
The those of ordinary skill in domain should be understood：It still can be to the skill described in foregoing embodiments
Art scheme is modified, or carries out equivalent to which part technical characteristic；And these are repaiied
Change or replace, the essence of appropriate technical solution is departed from various embodiments of the present invention technical side
The spirit and scope of case.
Claims (15)
1. a kind of generator bearing failure detector, it is characterised in that：Including detection terminal,
Controller, at least one oil quality analyzer and at least one testing agency, the testing agency set
In in bearing seal chamber, for detecting jacking oil oily temperature and viscosity in bearing seal chamber；
The oil quality analyzer is connected with bearing seal chamber, for detecting oily composition in bearing seal chamber；
The controller is connected with testing agency and oil quality analyzer respectively, for reception and processing detection
Temperature, viscosity and the oily twocomponent signal for arriving, and send the signal after treatment to detection terminal
System, the detection terminal system is used to judge according to the signal for receiving the working condition of bearing.
2. generator bearing failure detector according to claim 1, its feature exists
In：The oil quality analyzer is connected by oil pipeline with bearing seal chamber, the oil pipeline
One end connected with oil quality analyzer, the other end is provided with for opening and closing the oil pipeline
On off mechanism, the on off mechanism be located at the accommodating chamber in.
3. generator bearing failure detector according to claim 2, its feature exists
In：The on off mechanism includes first connecting rod, transmission mechanism and actuating unit, and described first connects
One end of bar is provided with plug, and the other end is located in oil pipeline and passes through transmission mechanism and engine
Structure is connected, and the end of the oil pipeline is provided with changeover portion, the mistake in bearing seal chamber
The outer end for crossing section is provided with the groove coordinated with the plug, and the groove is set by changeover portion
Oil inlet passage connected with oil pipeline, slided by actuating unit drivening rod, promote plug
Separate or fit with the groove, realize the opening or closure of oil pipeline.
4. generator bearing failure detector according to claim 3, its feature exists
In：The plug is spherical shape, and the groove is cone tank.
5. generator bearing failure detector according to claim 3, its feature exists
In：The first connecting rod is vertically provided with connecting plate away from one end of plug, and the first connecting rod leads to
Connecting plate is crossed to be connected with transmission mechanism；The transmission mechanism include second connecting rod, third connecting rod and
Be fixed on the fix bar on oil pipeline inwall, one end of the second connecting rod and connecting plate away from
One end of first connecting rod is hinged, and the other end is hinged with one end of the third connecting rod, and the described 3rd
The middle part of connecting rod is hinged with fix bar；The actuating unit includes being fixed on the third connecting rod other end
Adsorption piece and the first electromagnet for being capable of adhesive adsorption piece that is fixed on oil pipeline inwall.
6. generator bearing failure detector according to claim 5, its feature exists
In：Spring, the bullet are additionally provided with oil pipeline between the changeover portion inwall and connecting plate
Spring is enclosed within the outside of first connecting rod, and one end of the spring is connected with connecting plate, the other end with
The inwall of changeover portion is connected.
7. generator bearing failure detector according to claim 1, its feature exists
In：The testing agency includes scalable connecting rod and connects boom end at least located at scalable
One temperature sensor and viscosimeter.
8. generator bearing failure detector according to claim 1, its feature exists
In：The testing agency also includes the protective sheet being fixed on bearing seal cavity wall, described anti-
Circular hole is offered on bluff piece, scalable connecting rod can be slided through the circular hole.
9. generator bearing failure detector according to claim 1, its feature exists
In：The controller includes A/D modular converters, Isolation Amplifier Module and pulse frequency detection mould
Block, the A/D modular converters are used to for analog signalses to be converted to data signal, the isolation
Amplification module is used to eliminate the interference signal run into during signal transmission, keeps signal stabilization, and right
Waveforms amplitude is amplified；The pulse frequency detection module is used for the frequency values of detection waveform.
10. generator bearing failure detector according to claim 9, its feature
It is：Also include the conversion electricity for current signal to be converted to voltage signal in the controller
Road.
11. generator bearing failure detectors according to claim 9, its feature
It is：The controller also includes for screening and tracks the binary conversion treatment circuit of signal.
12. generator bearing failure detectors according to claim 1, its feature
It is：The detection terminal system includes online monitoring platform and system debug platform.
A kind of 13. generator bearing fault detection methods, it is characterised in that：Using such as right
Generator bearing failure detector described in any one of 1-12, comprises the following steps：
S1, starts detection means, and bearing seal chamber is measured by oil quality analyzer and testing agency
Interior oily temperature, viscosity and oily twocomponent signal；
S2, the temperature, viscosity and oily twocomponent signal that simultaneously processing detection is arrived are received using controller,
And send the signal after treatment to detection terminal system；
S3, the detection terminal system judges the working condition of bearing according to the signal for receiving.
14. generator bearing failure detectors according to claim 13, its feature
It is：In step s 2, scalable connecting rod is changed in bearing seal chamber by controller
Position, measures temperature, the viscosity signal of the oil in bearing seal chamber in diverse location.
15. generator bearing failure detectors according to claim 13, it is characterised in that：
In step s3, when temperature, viscosity and oily composition one of them or more than one monitoring letter
When number occurring abnormal, detection terminal system control controller is classified does not alarm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510860036.1A CN106813923A (en) | 2015-11-30 | 2015-11-30 | A kind of generator bearing failure detector and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510860036.1A CN106813923A (en) | 2015-11-30 | 2015-11-30 | A kind of generator bearing failure detector and detection method |
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| CN106813923A true CN106813923A (en) | 2017-06-09 |
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| CN201510860036.1A Pending CN106813923A (en) | 2015-11-30 | 2015-11-30 | A kind of generator bearing failure detector and detection method |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5782742A (en) * | 1980-11-13 | 1982-05-24 | Hitachi Ltd | Monitoring device for bearing |
| CN2486792Y (en) * | 2001-06-04 | 2002-04-17 | 刘涛 | Anti-theft sampling valve |
| CN101509883A (en) * | 2008-02-17 | 2009-08-19 | 河池学院 | Engine oil detector |
| CN101566523A (en) * | 2009-05-11 | 2009-10-28 | 中能电力科技开发有限公司 | Method for monitoring state of gear case of wind generating set |
| CN101860127A (en) * | 2010-05-07 | 2010-10-13 | 中国石化集团南京化学工业有限公司 | Running protecting and monitoring diagnosis system of motor |
| CN102052977A (en) * | 2009-10-31 | 2011-05-11 | 中国石油大学(北京) | Measuring device for temperature field of telescopic large-size oil tank |
| CN201876451U (en) * | 2010-07-02 | 2011-06-22 | 北京中联电科技术有限公司 | Multi-parameter oil monitoring and analyzing device based on multi-sensor fusion technology |
| CN102434388A (en) * | 2011-11-17 | 2012-05-02 | 高丙团 | Health status online monitoring device of wind generating set and monitoring method of monitoring device |
| CN102967462A (en) * | 2012-11-16 | 2013-03-13 | 哈尔滨电机厂有限责任公司 | Dynamic monitoring system for operating condition of thrust bearing of hydro-generator |
| US20140331754A1 (en) * | 2013-05-09 | 2014-11-13 | Caterpillar Inc. | Diagnostic system and method for a bearing of a connecting rod |
| CN104912624A (en) * | 2015-06-25 | 2015-09-16 | 重庆长安汽车股份有限公司 | Apparatus of integrating engine machine oil sampling and machine oil temperature measuring |
-
2015
- 2015-11-30 CN CN201510860036.1A patent/CN106813923A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5782742A (en) * | 1980-11-13 | 1982-05-24 | Hitachi Ltd | Monitoring device for bearing |
| CN2486792Y (en) * | 2001-06-04 | 2002-04-17 | 刘涛 | Anti-theft sampling valve |
| CN101509883A (en) * | 2008-02-17 | 2009-08-19 | 河池学院 | Engine oil detector |
| CN101566523A (en) * | 2009-05-11 | 2009-10-28 | 中能电力科技开发有限公司 | Method for monitoring state of gear case of wind generating set |
| CN102052977A (en) * | 2009-10-31 | 2011-05-11 | 中国石油大学(北京) | Measuring device for temperature field of telescopic large-size oil tank |
| CN101860127A (en) * | 2010-05-07 | 2010-10-13 | 中国石化集团南京化学工业有限公司 | Running protecting and monitoring diagnosis system of motor |
| CN201876451U (en) * | 2010-07-02 | 2011-06-22 | 北京中联电科技术有限公司 | Multi-parameter oil monitoring and analyzing device based on multi-sensor fusion technology |
| CN102434388A (en) * | 2011-11-17 | 2012-05-02 | 高丙团 | Health status online monitoring device of wind generating set and monitoring method of monitoring device |
| CN102967462A (en) * | 2012-11-16 | 2013-03-13 | 哈尔滨电机厂有限责任公司 | Dynamic monitoring system for operating condition of thrust bearing of hydro-generator |
| US20140331754A1 (en) * | 2013-05-09 | 2014-11-13 | Caterpillar Inc. | Diagnostic system and method for a bearing of a connecting rod |
| CN104912624A (en) * | 2015-06-25 | 2015-09-16 | 重庆长安汽车股份有限公司 | Apparatus of integrating engine machine oil sampling and machine oil temperature measuring |
Non-Patent Citations (2)
| Title |
|---|
| 潘丕武: "《石油计量技术》", 31 May 2009, 中国计量出版社 * |
| 苏连成 等: "风电机组轴承的状态监测和故障诊断与运行维护", 《轴承》 * |
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