CN106969828A - A kind of steam turbine watt vibration sensor fault diagnosis and passage check system and method - Google Patents
A kind of steam turbine watt vibration sensor fault diagnosis and passage check system and method Download PDFInfo
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- CN106969828A CN106969828A CN201710254497.3A CN201710254497A CN106969828A CN 106969828 A CN106969828 A CN 106969828A CN 201710254497 A CN201710254497 A CN 201710254497A CN 106969828 A CN106969828 A CN 106969828A
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- vibration sensor
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- passage
- fault diagnosis
- junction box
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
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Abstract
The invention discloses a kind of steam turbine watt vibration sensor fault diagnosis and passage check system and method, the system includes：Junction box, with multiple signalling channels, connects watt vibration sensor, the detection signal for receiving and transmitting watt vibration sensor；Passage tester, is connected with junction box, for being verified to sensor passage；Shake table, and a watt vibration sensor are fixed, for providing vibration source to watt vibration sensor after sensor passage verification is qualified；Fault diagnosis device, is connected with shake table and junction box respectively, for the detection signal and the standard vibration signal of shake table of watt vibration sensor for receiving junction box's transmission, inline diagnosis watt vibration sensor failure.Present invention also offers a kind of steam turbine watt vibration sensor fault diagnosis and passage method of calibration.The problem of present invention solves the condition and the longer cycle that do not have to sensor progress active vibration detection that current watt of vibration sensor fault diagnosis and passage verification are present.
Description
Technical field
The present invention relates to fault detect and field of measuring technique, more particularly to a kind of steam turbine watt vibration sensor fault diagnosis
And passage check system and method.
Background technology
Steam turbine watt vibration sensor is the vibration values for measuring bearing seat of steam turbine, typically with the bearing block of supporting rotor
The peak-to-peak value of vibration is used as vibration values.The important operation ginseng that steam turbine watt shakes value to monitor in steam turbine startup, operation, stopping process
Count, one of parameter that some producers protect its numerical value as steam turbine chaser, but also suggestion manually can be provided and beat lock value.By
It is arranged in steam turbine watt vibration sensor on bearing seat of steam turbine, is chronically at the running environment of high temperature and vibration, breaks down
Probability it is larger, the state of timely diagnostic sensor is needed when unit vibration is abnormal and accident analysis is carried out, is correct processing
Steam Turbine operational factor provides important foundation extremely, and the reliability for data of watt shaking is related to the security of steam turbine, watt
To a watt rapid verification for vibration sensor passage when the reliability diagnosis and shutdown of data of shaking, the security to ensureing Steam Turbine
Have great significance.
In the market general letter is typically used for A, mV grades of small-signal acceleration-type watt vibration sensor passage verifications of μ
Number generator and other components build electric loop, produce μ A, mV signals of band biasing, and many are examined and determine using commission specialty
Mechanism is examined and determine a watt vibration sensor, typically the trial inspection without scene and verification；Examined for a watt vibration sensor failure
The disconnected general signal pickup assembly using vibrating sensor, steam turbine is judged by modes such as the spectrum analyses to sensor
State, and judgement typically is compared by the way of changing for the judgement of sensor in itself, formal verification is generally required
The verification agency of specialty is sent to carry out.
The small-signal source for the generic function generator that prior art is used has the shortcomings that stability is poor, precision is low, uses
It is very poor that the technical scheme enters row of channels verification reliability, and precision is extremely difficult to require, and needs oneself to build electric loop, can
It is worse by property, it is difficult to meet the requirement of experiment；To sensor breakdown judge itself, special purpose device without on-line fault diagnosis and
Software application, does not set up sensor fault expert database, it is impossible to quickly provide diagnostic assistance according to fault signature；Due to lacking
The field-checking of vibration source and standard transducer judges, the sensor of replacing can not be excluded in itself using approach sensor is changed
The erroneous judgement that failure is caused, it is impossible to accurately positioned to the fault type of sensor.The verification agency of specialty is sent to carry out just
Formula is verified, because the cycle is longer, it is impossible to meet urgent requirement of the troubleshooting hesitation to the time.
The content of the invention
Technical problem to be solved of the embodiment of the present invention is, for the defect of above-mentioned prior art, there is provided a kind of vapour
Turbine watt vibration sensor fault diagnosis and passage check system and method.
In order to solve the above-mentioned technical problem, the embodiments of the invention provide a kind of steam turbine watt vibration sensor fault diagnosis and
Passage check system, including：
Junction box, with multiple signalling channels, is connected when a watt vibration sensor is normally run with described watt of vibration sensor, uses
The detection signal sent when receiving and transmitting the operation of watt vibration sensor；
Controller, is connected with the junction box, for controlling the signalling channel of the junction box to be switched on or switched off；
Passage tester, is connected with the controller, is connected, is used for the junction box under the control of the controller
Multiple checking signals are provided to verify sensor passage；
Shake table, is connected with the controller and is fixed with a watt vibration sensor, under the control of the controller to
Watt vibration sensor provides vibration source, is simultaneously emitted by standard vibration signal；
Fault diagnosis device, is connected with the shake table, the junction box and the controller respectively, in sensing of watt shaking
The detection signal of watt vibration sensor of junction box's transmission and the standard vibration letter of the shake table are received when device is normally run
Number, watt vibration sensor failure described in inline diagnosis.
Preferably, the controller is used to disconnect the junction box and the passage school when a watt vibration sensor is normally run
Test the connection between instrument and the connection connected between the junction box and Wa vibration sensors；The controller is additionally operable to led to
Road disconnects the connection between the junction box and watt vibration sensor and connects the junction box and the passage tester when verifying
Between connection.
Preferably, the controller is additionally operable to control the shake table vibration simultaneously after sensor passage verification is qualified
The fault diagnosis device is controlled to run.
Preferably, the shake table includes：
Stage body is vibrated, for providing vibration source and sending the standard vibration signal of itself；
Geometrical clamp, is fixedly connected with the vibration stage body and a watt vibration sensor, for making watt vibration sensor with described respectively
Vibration stage body together vibrates；
Standard probe, is connected with the vibration stage body and the fault diagnosis device, for transmitting the standard vibration respectively
Signal is to the fault diagnosis device.
Preferably, the fault diagnosis device includes：
Wiring control module, is connected with the standard probe and the junction box respectively, for being transmitted from the junction box
Watt vibration sensor detection signal and the standard probe transmission standard vibration signal；
Failure analysis module, is connected with the wiring control module, for the detection signal and standard according to reception
Vibration signal is analyzed the failure of watt vibration sensor；
Display module, is connected with the wiring control module and the failure analysis module respectively, for showing measurement knot
Really, vibrational waveform and analysis result.
Preferably, the wiring control module includes several control failure analysis modules and display module fortune
The operating key of row operation, several voltage and current input interfaces, and several USB and communication interface.
Preferably, the controller is connected by the USB interface and the wiring control module, and the controller is also used
In the operation operation for controlling the failure analysis module and the display module.
Preferably, the failure analysis module also includes：
Database module, a watt expert database for vibration sensor fault diagnosis is established using failure mode set；
Analysis module, is connected with the wiring control module and the database module respectively, for the institute according to reception
Detection signal and standard vibration signal is stated, by being compared with the database in the database module, based on using icon generation
The LABVIEW graphical programming languages of application program are created for line of text, using data flow programming mode to watt vibration sensor
Failure is analyzed.
Preferably, the passage tester is used for the signal for producing A, mV grades of small-signal acceleration-type watt vibration sensors of μ
Source is verified to sensor passage.
Present invention also offers a kind of steam turbine watt vibration sensor fault diagnosis and passage method of calibration, including following step
Suddenly：
S1, connection passage tester and junction box, the passage tester are verified, and passage verifies qualified carry out step
S3, passage verification is unqualified then to carry out step S2；
S2, channel failure is analyzed according to the check results of passage tester and repaired to passage verify it is qualified
Afterwards, step S3 is carried out；
S3, be fixedly connected with shake table and watt vibration sensor, by the junction box respectively with watt vibration sensor and fault diagnosis
Device is connected, and controls the shake table to send standard vibration signal and transmit the standard vibration signal to fault diagnosis device, watt is shaken
Sensor passes detect signal to the junction box；
The detection signal and the mark of the shake table for watt vibration sensor that S4, the fault diagnosis device are transmitted according to junction box
Quasi- vibration signal, watt vibration sensor failure described in inline diagnosis.
Preferably, the step S4 also includes：
S41, the expert database using failure mode set foundation watt vibration sensor fault diagnosis；
S42, the detection signal and standard vibration signal received, by being compared with the database, based on use
Icon replaces line of text to create the LABVIEW graphical programming languages of application program, using data flow programming mode to biography of watt shaking
The failure of sensor is analyzed；
Preferably, passage tester described in the step S1 is shaken by producing A, mV grades of small-signal acceleration-types watt of μ
The signal source of sensor is verified to sensor passage.
One or more technical schemes that the present invention program is provided, have at least the following technical effects or advantages：
In the present invention program, filled by developing a set of portable turbine watt vibration sensor fault diagnosis and passage verification
Put, the need for vibrating sensor fault diagnosis and field channels are verified when can meet unit vibration exception, it can be widely
It is unit maintenance personnel applied to the verification of domestic conventional fired power generating unit, nuclear power generating sets watt vibration sensor fault diagnosis and passage
The means of watt vibration sensor inline diagnosis are provided, the quick availability for judging passage shortens the repair time, reduces unit mistakenly stop machine
Number of times, improves the security and economy of unit.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the steam turbine watt vibration sensor fault diagnosis and passage check system structure that first embodiment of the invention is provided
Schematic diagram；
Fig. 2 is the shake table structure chart that first embodiment of the invention is provided；
Fig. 3 is the stream of the steam turbine watt vibration sensor fault diagnosis that second embodiment of the invention is provided and channel testing arrangement
Cheng Tu.
Embodiment
The embodiment of the present invention by providing a kind of steam turbine watt vibration sensor fault diagnosis and channel testing arrangement and method,
When solving vibration acquisition passage precision checking present in prior art, A, mV grades of small-signals of μ are highly prone to the interference in the external world,
The live general condition not having to sensor progress active vibration detection, special purpose device and software without on-line fault diagnosis
Using not setting up sensor fault expert database, it is impossible to quickly provide diagnostic assistance according to fault signature, it is impossible to sensor
Fault type accurately positioned, and send the verification agency of specialty formally to be verified, the cycle is longer can not to meet failure
The problem of processing hesitation is required time urgent, by developing a kind of portable turbine watt vibration sensor fault diagnosis
And channel testing arrangement and method, vibrating sensor fault diagnosis and field channels are verified when can meet unit vibration exception
Need, it can be widely applied to the school of domestic conventional fired power generating unit, nuclear power generating sets watt vibration sensor fault diagnosis and passage
Test, a watt means for vibration sensor inline diagnosis are provided for unit maintenance personnel, the quick availability for judging passage, when shortening maintenance
Between, reduce unit and miss machine stop times, improve the security and economy of unit.
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment one
Fig. 1 is referred to, Fig. 1 is the steam turbine watt vibration sensor fault diagnosis and passage for the first embodiment that the present invention is provided
Check system structural representation, it can be seen that the system includes：Junction box 1, with multiple signalling channels, watt is shaking
It is connected when sensor is normally run with described watt of vibration sensor, for receiving and transmitting the detection sent when watt vibration sensor is run
Signal；Controller 2, is connected with the junction box 1, for controlling the signalling channel of the junction box 1 to be switched on or switched off；Passage school
Instrument 3 is tested, is connected with the controller 2, is connected under the control of the controller 2 with the junction box 1, for providing multiple schools
Signal is tested to verify sensor passage；Shake table 4, is connected with the controller 2 and is fixed with a watt vibration sensor, for
Vibration source is provided to watt vibration sensor under the control of the controller 2, standard vibration signal is simultaneously emitted by；Fault diagnosis device 5, point
It is not connected with the shake table 4, the junction box 1 and the controller 2, for receiving institute when a watt vibration sensor is normally run
The detection signal and the standard vibration signal of the shake table 4 of watt vibration sensor of the transmission of junction box 1 are stated, described in inline diagnosis watt
Vibration sensor failure.
Specifically, when a watt vibration sensor is normally run, controller 2 disconnects the junction box 1 and the passage tester 3
Between connection and the connection connected between the junction box 1 and watt vibration sensor；When entering row of channels verification, the controller
2 disconnect the connection between the junction box 1 and watt vibration sensor and connect between the junction box 1 and the passage tester 3
Connection.After passage verification is qualified, a watt vibration sensor is normally run, and controller 2 disconnects the junction box 1 and the passage school
The connection between instrument 3 and the connection connected between the junction box 1 and watt vibration sensor are tested, and controls the fault diagnosis device 5
Operation, proceeds by fault diagnosis.
In the present embodiment, the passage tester has 4 tunnel sensor Simulation output channels, and each passage can independent mould
Intend current vortex, magnetoelectricity, inertia, ICP, reluctive transducer, by 4 tunnel sensor Simulation output channels of passage tester respectively with
Junction box connects, passage tester output simulation watt vibration sensor signal, such as watt rate signal shaken, acceleration signal, operation
The physical index and figure of generation can be shown afterwards, and the standard stored in obtained parameter and figure and passage tester is joined
Number is compared with figure and corrected automatically.Passage tester in the present embodiment can verify measuring instrumentss vibration (displacement,
Speed, acceleration), bias, the input channel such as rotating speed, and A, mV grades of small-signal acceleration-type watt vibration sensors of μ can be produced
Signal source, meet the demand of A, mV grades of small-signal acceleration-type watt vibration sensor passages of μ verification.
Specifically, with reference to shown in Fig. 1 and Fig. 2, the shake table 4 includes：Stage body 41 is vibrated, it is concurrent for providing vibration source
Go out the standard vibration signal of itself；Geometrical clamp 42, is fixedly connected with the vibration stage body 41 and a watt vibration sensor, for making respectively
Watt vibration sensor together vibrates with the vibration stage body 41；Standard probe 43, respectively with the vibration stage body 41 and the failure
Diagnostor 5 is connected, for transmitting the standard vibration signal to the fault diagnosis device 5.Using geometrical clamp 42, shaken in detection watt
When providing standard vibration signal during sensor fault, it is not necessary to by watt vibration sensor under bearing seat of steam turbine dismounting
Come, a watt means for vibration sensor inline diagnosis can be provided for unit maintenance personnel, shorten the repair time, reduce unit mistakenly stop machine
Number of times, improves the security and economy of unit.
As shown in figure 1, the fault diagnosis device 5 includes：Wiring control module 51, respectively with the standard probe 43 and institute
State junction box 1 to connect, the detection signal of watt vibration sensor and the standard probe 43 for transmitting from the junction box 1 are transmitted
Standard vibration signal；Failure analysis module 52, is connected with the wiring control module 51, for the detection according to reception
Signal and standard vibration signal are analyzed the failure of watt vibration sensor；Display module 53, controls mould with the wiring respectively
Block 51 and the failure analysis module 52 are connected, for showing measurement result, vibrational waveform and analysis result.
Specifically, the wiring control module 51 includes a control failure analysis module 52 and the display module
The operating key of 53 operation operations, six control source interfaces, six electric current input interfaces, and two USB interfaces and one are logical
Communication interface.
In the present embodiment, the controller 2 is externally connected portable formula notebook, passes through the USB interface and the wiring
Control module 51 is connected, and the control Wiring module 51 can control the failure analysis module 52 and the display module 53
Operation and operation, the controller 2 can also control the operation of the failure analysis module 52 and the display module 53 to operate,
Measurement result, vibrational waveform and analysis result can also be shown with the display module 53 equally display simultaneously.Using portable
Notebook control fault diagnosis device 5 is easy to operation, and display screen of laptop curtain is more convenient observation, recorded and prints display measurement
As a result, vibrational waveform and analysis result.Fault diagnosis device 5 in the embodiment of the present invention can continuously record, preserve and show 1
Historical data more than it, uses hardwire mode, the connection of test cable and experimental rig is mark with being devices under access
Accurate BNC connector, analog signalses error should be less than 0.2%FS, and experimental rig signal sampling and display time should be less than 5ms.
Specifically, the failure analysis module 52 also includes：Database module 521, is established watt using failure mode set
The expert database of vibration sensor fault diagnosis；Analysis module 522, respectively at the wiring control module 51 and the database
Module 521 is connected, for the detection signal and standard vibration signal according to reception, by with the database module 521
In database be compared, based on replaced with icon line of text create application program LABVIEW graphical programming languages,
LABVIEW is a kind of graphical programming language for replacing line of text to create application program with icon, using data flow programming mode,
Data flow between flow chart interior joint determines the execution sequence of VI and function.VI refers to virtual instrument, is LABVIEW
Program module.
Wherein, watt vibration sensor fault diagnosis is divided into Eddy Current Type, piezoelectricity according to sensor different type first and accelerated
Three kinds of degree type and magnetoelectricity velocity profile, then set up " fault set " as complete as possible to each type of sensor and (are similar to expert
Storehouse), " fault set " is stored in database module 521.
Specifically, shake table 4 by the transmission standard vibration signal of standard probe 43 to wiring control module 51 transmit again to
Analysis module 522, a watt vibration sensor send vibration signal be transferred to junction box 1 transmit again to wiring control module 51 and analysis mould
Block 522, while database module 521 transmits " fault set " to analysis module 522, analysis module 522 is according to reception
Detection signal and standard vibration signal are compared with fault set, ultimately produce fault diagnosis result and report, then by measurement result
Controller 2, i.e. portable notebook are transferred to by USB interface.
Specifically, fault diagnosis is diagnosed in two ways, and the first is " Basic examination and judgement " project, main purpose
It is by some simple, apparent, obvious inspections and judgement, quickly determining simple fault, providing conclusion；Second
Kind for " the signal analysis result through sensor detection signal to judge " project, including " amplitude domain signal analysis ", " time-domain
Signal analysis ", " frequency domain signal analysis " three kinds of analysis means, so as to obtain complex fault diagnosis result, such as one
A little combined faults.
On the basis of " fault set ", using two kinds of diagnosis and inference schemes：The first is " to come through Basic examination and judgement
Determine failure cause ", i.e., some failures that are basic, being easy to macroscopic examination are shown on interface, user technical staff is directly led to
Cross the mode chosen and determine failure cause as far as possible；Second more complex, is referred to as " coming true through Sensor monitoring signal analysis
Fixed failure ", i.e., " by signal analysis tracing trouble ", its main points is：Most of complex fault can not be straight by visual examination
Determination is connect, but these failures can all leave some feature hints, and the faulty figure of institute in amplitude domain, time-domain or frequency domain
Shape can be classified as a limited number of ten kinds of graphic feature performances.Amplitude domain figure, time-domain figure are provided with system interface
And spectrogram, and system in a variety of graphic features, the present embodiment is set out enumerates 24 kinds of different graphic features, corresponding to width
Codomain, time-domain and each 8 kinds of frequency domain, user technical staff are chosen corresponding by observing these figures after simple judgement
Graphic feature, then, the fault search that software can be set according to backstage find with matching engine and choose the failure matched
Combination, failure is further confirmed that for technical staff.Pass through the steam turbine watt vibration sensor on-line fault diagnosis and passage verification dress
The application put, to ensure that steam turbine normally runs offer important evidence.
Embodiment two
With reference to shown in Fig. 3, the embodiment of the present invention two provides a kind of steam turbine watt vibration sensor fault diagnosis and passage school
Proved recipe method, comprises the following steps：
S1, connection passage tester 3 and junction box 1, the passage tester 3 are verified, and passage verification is qualified to be carried out
Step S3, passage verification is unqualified then to carry out step S2；
S2, channel failure is analyzed according to the check results of passage tester 3 and repaired to passage verify close
After lattice, step S3 is carried out；
S3, shake table 4 and watt vibration sensor are fixedly connected with, the junction box 1 is examined with watt vibration sensor and failure respectively
Disconnected device 5 is connected, and controls the shake table 4 to send standard vibration signal and transmit the standard vibration signal to fault diagnosis device 5,
Watt vibration sensor transmission detection signal is to the junction box 1；
The detection signal and the shake table 4 for watt vibration sensor that S4, the fault diagnosis device 5 are transmitted according to junction box 1
Standard vibration signal, watt vibration sensor failure described in inline diagnosis.
Specifically, in step sl, when entering row of channels verification, the junction box 1 and biography of watt shaking are disconnected by controller 2
Connection between sensor and the connection connected between the junction box 1 and the passage tester 3；Passed in step s3 described
Controller 2 disconnects the junction box 1 and the passage tester 3 when a watt vibration sensor is normally run after the verification of sensor passage is qualified
Between connection and the connection connected between the junction box 1 and watt vibration sensor, and control the shake table 4 to vibrate and control
The fault diagnosis device 5 is run.
In the present embodiment, passage tester 2 described in the step S1 is by producing high-precision μ A, mV grades of small-signals
The signal source of acceleration-type watt vibration sensor is verified to sensor passage, meets A, mV grades of small-signal acceleration-types of μ
The demand of watt vibration sensor passage verification.
Specifically, the step S4 also includes：
S41, the expert database using failure mode set foundation watt vibration sensor fault diagnosis；
S42, the detection signal and standard vibration signal received, by being compared with the database, based on use
Icon replaces line of text to create the LABVIEW graphical programming languages of application program, using data flow programming mode to biography of watt shaking
The failure of sensor is analyzed.
Accident analysis is specifically diagnosed in two ways in step S42 described in the embodiment of the present invention, and the first is " substantially
Check and judge " project, main purpose be by some are simple, apparent, it is obvious check and judge, it is quick really
Determine simple fault, provide conclusion；Second of project for " the signal analysis result through sensor detection signal to judge ", including
" amplitude domain signal analysis ", " time-domain signal analysis ", " frequency domain signal analysis " three kinds of analysis means, so as to obtain more multiple
Miscellaneous fault diagnosis result, such as some combined faults.
On the basis of " fault set ", using two kinds of diagnosis and inference schemes：The first is " to come through Basic examination and judgement
Determine failure cause ", i.e., some failures that are basic, being easy to macroscopic examination are shown on interface, user technical staff is directly led to
Cross the mode chosen and determine failure cause as far as possible；Second more complex, is referred to as " coming true through Sensor monitoring signal analysis
Fixed failure ", i.e., " by signal analysis tracing trouble ", its main points is：Most of complex fault can not be straight by visual examination
Determination is connect, but these failures can all leave some feature hints, and the faulty figure of institute in amplitude domain, time-domain or frequency domain
Shape can be classified as a limited number of ten kinds of graphic feature performances.Amplitude domain figure, time-domain figure are provided with system interface
And spectrogram, and system in a variety of graphic features, the present embodiment is set out enumerates 24 kinds of different graphic features, corresponding to width
Codomain, time-domain and each 8 kinds of frequency domain, user technical staff are chosen corresponding by observing these figures after simple judgement
Graphic feature, then, the fault search that software can be set according to backstage find with matching engine and choose the failure matched
Combination, failure is further confirmed that for technical staff.Pass through the steam turbine watt vibration sensor on-line fault diagnosis and passage verification dress
The application put, to ensure that steam turbine normally runs offer important evidence.
In summary, application scheme at least has following advantageous effects for prior art：
(1), can be with by the application of the steam turbine watt vibration sensor on-line fault diagnosis and passage check system and method
Quickly, vibration signals collecting passage precision checking is accurately completed, the error of interference fringe is reduced.
(2), can be with by the application of the steam turbine watt vibration sensor on-line fault diagnosis and passage check system and method
The scene of realization is verified to a watt vibration sensor.
(3) by the application of the steam turbine watt vibration sensor on-line fault diagnosis and passage check system and method, to protect
Card steam turbine normally runs offer important evidence, improves the in-service service ability of company and opens up in-service service business.
As described above, above-mentioned steam turbine watt vibration sensor on-line fault diagnosis and passage check system are used to implement
Above-mentioned steam turbine watt vibration sensor on-line fault diagnosis and passage method of calibration, so, the embodiment of the system and above-mentioned side
One or more embodiments of method are identical, just no longer repeat one by one herein.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (12)
1. a kind of steam turbine watt vibration sensor fault diagnosis and passage check system, it is characterised in that including：
Junction box (1), with multiple signalling channels, is connected when a watt vibration sensor is normally run with described watt of vibration sensor, uses
The detection signal sent when receiving and transmitting the operation of watt vibration sensor；
Controller (2), is connected with the junction box (1), for controlling the signalling channel of the junction box (1) to be switched on or switched off；
Passage tester (3), is connected with the controller (2), with the junction box (1) under the control of the controller (2)
Connection, is verified for providing multiple checking signals to sensor passage；
Shake table (4), is connected with the controller (2) and is fixed with a watt vibration sensor, for the control in the controller (2)
It is lower to provide vibration source to watt vibration sensor, it is simultaneously emitted by standard vibration signal；
Fault diagnosis device (5), is connected with the shake table (4), the junction box (1) and the controller (2) respectively, for
Watt vibration sensor receives the detection signal and the shake table of watt vibration sensor of the junction box (1) transmission when normally running
(4) standard vibration signal, watt vibration sensor failure described in inline diagnosis.
2. steam turbine watt vibration sensor fault diagnosis according to claim 1 and passage check system, it is characterised in that institute
Stating controller (2) is used to disconnect when a watt vibration sensor is normally run between the junction box (1) and the passage tester (3)
Connection and the connection connected between the junction box (1) and watt vibration sensor；The controller (2) is additionally operable to entering row of channels
The connection between the junction box (1) and watt vibration sensor is disconnected during verification and the junction box (1) and the passage school is connected
The connection tested between instrument (3).
3. steam turbine watt vibration sensor fault diagnosis according to claim 2 and passage check system, it is characterised in that institute
Controller (2) is stated to be additionally operable to control the shake table (4) to vibrate after sensor passage verification is qualified and control the event
Hinder diagnostor (5) operation.
4. steam turbine watt vibration sensor fault diagnosis according to claim 3 and passage check system, it is characterised in that institute
Stating shake table (4) includes：
Stage body (41) is vibrated, for providing vibration source and sending the standard vibration signal of itself；
Geometrical clamp (42), respectively with it is described vibration stage body (41) and a watt vibration sensor be fixedly connected, for make watt vibration sensor with
The vibration stage body (41) is together vibrated；
Standard probe (43), is connected with the vibration stage body (41) and the fault diagnosis device (5), for transmitting the mark respectively
Quasi- vibration signal is to the fault diagnosis device (5).
5. steam turbine watt vibration sensor fault diagnosis according to claim 4 and passage check system, it is characterised in that institute
Stating fault diagnosis device (5) includes：
Wiring control module (51), is connected with the standard probe (43) and the junction box (1) respectively, for from the wiring
The detection signal of watt vibration sensor of case (1) transmission and the standard vibration signal of the standard probe (43) transmission；
Failure analysis module (52), is connected with the wiring control module (51), for the detection signal according to reception and
Standard vibration signal is analyzed the failure of watt vibration sensor；
Display module (53), is connected with the wiring control module (51) and the failure analysis module (52), for showing respectively
Show measurement result, vibrational waveform and analysis result.
6. steam turbine watt vibration sensor fault diagnosis according to claim 5 and passage check system, it is characterised in that institute
Stating wiring control module (51) includes several described failure analysis modules (52) of control and the display module (53) operation behaviour
The operating key of work, several voltage and current input interfaces, and several USB and communication interface.
7. steam turbine watt vibration sensor fault diagnosis according to claim 6 and passage check system, it is characterised in that institute
State controller (2) to connect by the USB interface and the wiring control module (51), the controller (2) is additionally operable to control
The operation operation of the failure analysis module (52) and the display module (53).
8. steam turbine watt vibration sensor fault diagnosis according to claim 5 and passage check system, it is characterised in that institute
Stating failure analysis module (52) also includes：
Database module (521), a watt expert database for vibration sensor fault diagnosis is established using failure mode set；
Analysis module (522), is connected with the wiring control module (51) and the database module (521), for root respectively
According to the detection signal and standard vibration signal of reception, by being compared with the database in the database module (521)
It is right, based on the LABVIEW graphical programming languages for replacing line of text to create application program with icon, using data flow programming mode
Failure to watt vibration sensor is analyzed.
9. steam turbine watt vibration sensor fault diagnosis according to claim 1 and passage check system, it is characterised in that institute
Stating passage tester (3) is used for the signal source for producing A, mV grades of small-signal acceleration-type watt vibration sensors of μ to sensor passage
Verified.
10. a kind of steam turbine watt vibration sensor fault diagnosis and passage method of calibration, it is characterised in that comprise the following steps：
S1, connect passage tester (3) and junction box (1), the passage tester (3) is verified, passage verify it is qualified enter
Row step S3, passage verification is unqualified then to carry out step S2；
S2, channel failure is analyzed according to the check results of passage tester (3) and repaired to passage verify it is qualified
Afterwards, step S3 is carried out；
S3, shake table (4) and watt vibration sensor are fixedly connected with, the junction box (1) is examined with watt vibration sensor and failure respectively
Disconnected device (5) connection, controls the shake table (4) to send standard vibration signal and transmit the standard vibration signal to fault diagnosis
Device (5), watt vibration sensor transmission detection signal to the junction box (1)；
The detection signal and the shake table for watt vibration sensor that S4, the fault diagnosis device (5) are transmitted according to junction box (1)
(4) standard vibration signal, watt vibration sensor failure described in inline diagnosis.
11. steam turbine watt vibration sensor fault diagnosis according to claim 10 and passage check system, it is characterised in that
The step S4 also includes：
S41, the expert database using failure mode set foundation watt vibration sensor fault diagnosis；
S42, the detection signal and standard vibration signal received, by being compared with the database, based on using icon
The LABVIEW graphical programming languages of application program are created instead of line of text, using data flow programming mode to a watt vibration sensor
Failure analyzed.
12. steam turbine watt vibration sensor fault diagnosis according to claim 10 and passage check system, it is characterised in that
Passage tester (3) described in the step S1 is by producing the signals of A, mV grades of small-signal acceleration-type watt vibration sensors of μ
Source is verified to sensor passage.
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