CN107575411B - A kind of Railway Tunnel draft fan safety monitoring assembly and method - Google Patents
A kind of Railway Tunnel draft fan safety monitoring assembly and method Download PDFInfo
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- CN107575411B CN107575411B CN201710562607.2A CN201710562607A CN107575411B CN 107575411 B CN107575411 B CN 107575411B CN 201710562607 A CN201710562607 A CN 201710562607A CN 107575411 B CN107575411 B CN 107575411B
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Abstract
The present invention relates to Railway Tunnel fields, a kind of Railway Tunnel draft fan safety monitoring assembly is provided, including frame, draft fan, pedestal, strain transducer, vibrating sensor, obliquity sensor and at least one monitor that can receive and handle the data that strain transducer, vibrating sensor and obliquity sensor obtain.A kind of Railway Tunnel draft fan safety monitoring assembly of the invention can carry out distant early warning to a variety of safety failures by analyzing safe condition in real time.Provide a kind of Railway Tunnel draft fan safety monitoring method, it can be used for above-mentioned device, it include: that tightening state, vibrational state and heeling condition are passed into monitor, monitor carries out model initialization according to safe condition model, then imports precarious position model to monitor；Monitor handles and analyzes above-mentioned state.A kind of Railway Tunnel draft fan safety monitoring method of the invention, safe and reasonable, implementation is easy for installation, has exploitativeness.
Description
Technical field
The present invention relates to Railway Tunnel field, specially a kind of Railway Tunnel draft fan safety monitoring assembly
And method.
Background technique
In recent years, domestic rail traffic cause flourishes, and high-speed rail, intercity, motor-car, subway obtain in national each province and city
To pushing energetically, also make significant headway, and tunnel is through the important channel of the obstructions such as city, mountains and rivers, river, due to
Tunnel needs to be even more to need ventilation of discharging fume, therefore be respectively mounted draft fan and be aerated work on demand when air exchange, especially fire
Make.
Tunnel ventilation blower is mainly used in the longitudinal exhausting system in the tunnels such as highway, railway and subway, provides whole
Thrust；It can also be used for the sensitive part in semi-transverse ventilation system or transversal ventilation system, such as the import and export in tunnel, play induction
The effects of air-flow or smoke evacuation.Ventilation due to the ventilation function of draft fan, effect and security requirement, in Railway Tunnel
Blower is typically mounted at the two sides in tunnel, and is fixed with firm steel construction.
The frequent start and stop of draft fan, rotation generate vibration, be distributed it is discrete, blower once break down, be not easy as maintenance person
Discover, by regular manual inspection, low efficiency, correctness are poor, cannot timely early warning, cause huge artificial burden.Due to height
Train speed is fast in fast railway tunnel, piston wind-force is strong, blower and its installation reliability are required it is very high, the failure of blower and
Structure safety problem will directly threaten bullet train and passenger's life safety.
Summary of the invention
The purpose of the present invention is to provide a kind of Railway Tunnel draft fan safety monitoring assembly and methods, pass through
The building of its security model and safety analysis are realized in monitoring to the tightening state of draft fan, vibrational state and heeling condition,
Early warning is carried out to safety problem, is differentiated, reduces the threat hidden danger to current train, reduces cost of labor, improve ventilation wind
The security reliability of machine.
To achieve the above object, the embodiment of the present invention provides the following technical solutions: a kind of Railway Tunnel draft fan
Safety monitoring assembly, including frame, the draft fan being mounted in the frame and bottom for carrying the draft fan
Seat, further includes the strain transducer of the tightening state of the tightening state and the pedestal for obtaining the frame, for obtaining
The vibrating sensor for taking the vibrational state of the draft fan, the inclination angle for obtaining the draft fan heeling condition sense
Device, and can receive and handle the data that the strain transducer, the vibrating sensor and the obliquity sensor obtain
At least one monitor.
Further, further include long-range middle control platform for managing the monitor.
Further, the draft fan, the pedestal and the frame by several bolt fastenings together；It is described to answer
Become sensor to be mounted on the bolt.
Further, the draft fan is equipped with draft fan silencer, and there are two the vibrating sensors, and is respectively mounted
In the draft fan silencer one side wall, one of them described vibrating sensor is vertically arranged, another described vibration passes
Sensor is horizontally disposed and perpendicular to the axis of the draft fan.
The embodiment of the present invention provides a kind of another technical solution: Railway Tunnel draft fan safety monitoring method,
It can be used for above-mentioned device, which comprises the tightening state of the frame and described is obtained by the strain transducer
The tightening state of pedestal is obtained the vibrational state of the draft fan by the vibrating sensor, is obtained by the obliquity sensor
The heeling condition for taking the draft fan establishes safety by the tightening state, the vibrational state and the heeling condition
State model；The tightening state, the vibrational state and the heeling condition are passed into the monitor, the monitoring
Device carries out model initialization according to the safe condition model, then imports precarious position model to the monitor；The monitoring
The device processing tightening state, the vibrational state and the heeling condition, and model analysis is carried out, when the appearance danger
When compromising feature in state model, the monitor issues early warning.
Further, it is specially that the compromising feature is shown to and is uploaded to control in long-range that the monitor, which issues early warning,
Platform.
Further, described includes: again to preset a variety of precarious position moulds to monitor importing precarious position model
Type and the monitor learn and are supplemented establishing precarious position model after recording actual danger feature.
Further, the tightening state that the frame and the pedestal are monitored by the strain transducer is specific to wrap
Include: the bolt has eight, and there are two the strain transducers, and eight bolts are in the distributed rectangular of 4X2, answers described in two
Become sensor to be separately mounted on bolt described in two of them；Other six bolts are mounted on washer, each washer
Height be respectively less than the height of each strain transducer；Eight bolts are tightened, the gravity value of the draft fan is denoted as
The fastening force value of FG, four bolts in rectangle length are successively denoted as F1, F2, F3 and F4 in order, obtain
One of them described strain transducer suffered by fastening force calculating formula be FN=F1'+F2+F3'+F4'+FG/2, wherein
Fn' is the one-component of Fn (n=1,2,3...8)；When any bolt loosens, the value of the FN will appear variation.
Further, the vibrational state that the draft fan is monitored by the vibrating sensor, specifically includes: the vibration
There are two dynamic sensors, monitor respectively the draft fan both horizontally and vertically on vibrational waveform；The vibration wave that will be measured
Shape is passed to the monitor, and the monitor has the AD acquisition conversion that can carry out waveform recording and frequency analysis respectively；It is described
Monitor acquires in real time, handles and analyzes the vibrational state, when the vibrational state beyond the safe condition or meets
When the precarious position, the monitor issues early warning.
Further, the heeling condition that the draft fan is monitored by the obliquity sensor, specifically includes: described logical
Wind assembling has draft fan silencer, and the obliquity sensor is horizontally arranged at draft fan silencer bottom, can
To monitor the heeling condition of draft fan axially and radially respectively；The monitor is acquired processing to the heeling condition,
When the heeling condition is beyond the safe condition or meets the precarious position, the monitor issues early warning.
Compared with prior art, the beneficial effects of the present invention are: a kind of Railway Tunnel draft fan safety monitoring fills
It sets, passes through the three-dimensional parameters such as tightening state, fan vibration state and the blower heeling condition of monitoring blower frame and base plate
Information carries out analyzing safe condition in real time, can a variety of safety failures be carried out with distant early warning, and investigation event can be assisted by analysis
Barrier is repaired, and the safety accident risk in Railway Tunnel is greatly reduced, and is reduced artificial periodic inspection cost and is omitted wind
Danger.A kind of Railway Tunnel draft fan safety monitoring method, safe and reasonable, implementation is easy for installation, has exploitativeness, no
Regular manual inspection is needed, cost of labor is reduced；Efficiency, accuracy rate are high, and can timely early warning.
Detailed description of the invention
Fig. 1 is a kind of Railway Tunnel draft fan safety monitoring assembly provided in an embodiment of the present invention and method
Structural schematic diagram；
Fig. 2 is a kind of Railway Tunnel draft fan safety monitoring assembly provided in an embodiment of the present invention and method
The first visual angle of strain transducer scheme of installation；
Fig. 3 is a kind of Railway Tunnel draft fan safety monitoring assembly provided in an embodiment of the present invention and method
The second visual angle of strain transducer scheme of installation；
Fig. 4 is a kind of Railway Tunnel draft fan safety monitoring assembly provided in an embodiment of the present invention and method
The mechanics distribution schematic diagram of strain transducer and each bolt；
Fig. 5 is a kind of Railway Tunnel draft fan safety monitoring assembly provided in an embodiment of the present invention and method
Vibrating sensor scheme of installation；
Fig. 6 is a kind of Railway Tunnel draft fan safety monitoring assembly provided in an embodiment of the present invention and method
Frequency-domain analysis principle schematic diagram；
Fig. 7 is a kind of Railway Tunnel draft fan safety monitoring assembly provided in an embodiment of the present invention and method
Obliquity sensor installs instrumentation plan；
Fig. 8 is a kind of Railway Tunnel draft fan safety monitoring assembly provided in an embodiment of the present invention and method
Security auditing functional block diagram；
Fig. 9 is a kind of Railway Tunnel draft fan safety monitoring assembly provided in an embodiment of the present invention and method
Accident analysis logic diagram；
In appended drawing reference: 1- frame；2- draft fan；3- pedestal；4- strain transducer；40- nut shim；5- vibration passes
Sensor；6- obliquity sensor；7- monitor；8- draft fan silencer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the embodiment of the present invention provides a kind of Railway Tunnel draft fan safety monitoring assembly, including frame
Frame 1, draft fan 2 and pedestal 3, draft fan 2 are mounted in frame 1, and then pedestal 3 carries draft fan 2, in frame
1 left and right sides can accommodate two draft fans 2, and frame 1 is connect with the built-in screw in surrounding concrete, and frame 1 is logical
Wind blower 2 provides support and protection, and pedestal 3 and frame 1 can be vibrated when blower works.It further include strain transducer 4, vibration biography
Sensor 5 and obliquity sensor 6, strain transducer 4 is used to obtain the tightening state after frame 1 installs and pedestal 3 installs
Tightening state afterwards, vibrating sensor 5 are used to obtain vibrational state when draft fan 2 works, and obliquity sensor 6 is used to obtain
Heeling condition when draft fan 2 works, in other words, as obtaining whether its posture is rectified.It finally further include monitor 7,
The data that above-mentioned three kinds of sensors obtain are received using monitor 7, and by its processing.Strain transducer 4, vibrating sensor 5
And acquired data are transmitted to monitor 7 by cable by obliquity sensor 6.One monitor 7 can handle a ventilation
The vibrational state and heeling condition of blower 2, and the tightening state of matched with this draft fan 2 frame 1 and pedestal 3.It can root
Factually the quantity of border draft fan 2 is arranged one or more monitors 7.By the monitoring to the comprehensive state of draft fan 2,
Three-dimension monitor is carried out to draft fan 2, has not only liberated labour, reduces the cost manually monitored, and have high
Accuracy.
The following are specific embodiments:
Optimization above scheme further includes that platform is controlled in long-range, and long-range middle control platform can manage monitor 7, and will obtain
Information be presented to relevant staff.Control platform can manage more monitors 7 in long-range, therefore can realize to high-speed railway
The monitoring of all draft fans 2, accomplishes the maximization of security performance in tunnel.
Above scheme is advanced optimized, referring to Fig. 1, strain transducer 4 is the fastening for obtaining frame 1 and pedestal 3
State, the mode of acquisition has very much, firstly, there are also frames 1 all by several bolt fastenings one for draft fan 2, pedestal 3
It rises, so strain transducer 4 is mounted on these bolts by we, can directly incude and whether fasten；It can also directly will be more
A strain transducer 4 is separately mounted near the bearing of frame 1 and pedestal 3, if loosening, strain transducer 4 can also be with
It induces rapidly.
Above scheme is advanced optimized, Fig. 1, Fig. 2 and Fig. 3 are please referred to, draft fan 2 uses horizontal installation, we adopt
Bolt for fastening has eight, and strain transducer 4 uses two, and strain transducer 4 is made into through-hole nut structure.In reality
In the mounting arrangements of border, one crossbeam is installed in the bottom of frame 1, pedestal 3 is placed on the central location of crossbeam, eight bolts according to
It is secondary to pass through frame 1, crossbeam, pedestal 3 and draft fan 2, and be vertically arranged, then again by two 4 sets of strain transducer at it
In on two bolts, recycle nut check.The distribution of eight bolts is distributed with 2X4 rectangular, with four bolts,
Width has two bolts, i.e. first row has four bolts, and second row also has four bolts, as shown in Figure 2, it can be seen that they are with one
Horizontal center line is divided into four bolts symmetrical above and below, and this horizontal center line is the axis of draft fan 2.In order to
The tightening state of balancing a survey, two strain transducers 4 are separately mounted to the one of bolt of first row and second row wherein
On one bolt, two strain transducers 4 are symmetrical with the intersection point of horizontal center line and vertical centerline, and are close to intersection point.?
In installation process, in order to avoid the bolt for being mounted with strain transducer 4 has too big difference with the bolt for not installing strain transducer 4
It is different, subsequent measurement is influenced, the nut more slightly lower than 4 height of strain transducer need to be set on the bolt for not installing strain transducer 4
Gasket 40, these nut shims 40 are sandwiched between pedestal 3 and crossbeam.In real work, two strain transducers 4 are by blower weight
The collective effect of power, each bolt clipping forcee, when draft fan 2 is unstable, bolt clipping forcee reduces, strain transducer 4
Measure its state.
Above scheme is advanced optimized, Fig. 1 and Fig. 5 are please referred to, draft fan 2 is equipped with draft fan silencer 8, is used for
Noise when draft fan 2 works is eliminated, there are two the settings of vibrating sensor 5, is installed in 8 one side wall of draft fan silencer
On, one of vibrating sensor 5 is vertically arranged, the vibrational state of the vertical direction for measuring the vibration of draft fan 2, another
A vibrating sensor 5 is horizontally disposed and perpendicular to the axis of draft fan 2, for measuring the vibration of 2 horizontal direction of draft fan
State.Vibrating sensor 5 can also be directly installed on draft fan 2 and be measured.Two vibrating sensors 5 are vibration
Velocity sensor either acceleration transducer, it can accurately measure the original waveform of the vibration of draft fan 2.Obtain this
Original waveform can be monitored device 7 and carry out high speed acquisition, analog-to-digital conversion, time domain record, frequency-domain analysis.Draft fan 2 at work,
Since rotation generates vibration, when 2 normal operation of draft fan, fastening structure, oscillating component meets theory α coefficient range, when logical
When 2 ontology of wind blower and structure division generate abnormal, the distribution of time domain vibrational waveform, frequency domain vibrational waveform will all become
Change, therefore monitor 7 just passes through monitoring, analysis Vibration Condition, by the vibration safety state of multidate information analysis blower.
Above scheme is advanced optimized, Fig. 1 and Fig. 7 are please referred to, obliquity sensor 6 is horizontally arranged at draft fan silencer
8 bottoms can measure the tilt angles in 2 all directions of draft fan.It can also be arranged close to 8 bottom of draft fan silencer
The other positions in portion.After first installation fixes draft fan 2, it must first confirm that draft fan 2 is mounted so as to reliable, specification,
Guarantee to rectify in fact, then installs obliquity sensor 6 again, the inclination for the draft fan 2 that obliquity sensor 6 obtains at this time
Status signal is basic value, and when 6 signal of obliquity sensor changes, monitor 7 is obtained logical by the comparison with basic value
Whether the heeling condition of the either whole device of wind blower 2 is normal.
Above scheme is advanced optimized, Fig. 8 and Fig. 9 are please referred to, monitor 7 has Signals collecting function, it can be received
The data that above-mentioned three kinds of sensors obtain；It is provided simultaneously with high-speed sampling semiotic function, can be realized waveform recording, the frequency domain of signal
Conversion；It is provided simultaneously with fan safe model information acquisition function, fan safe model can be established and initialize security information；Together
When have risk model writing function, all kinds of fault models under non-secure states can be stored in advance；It is provided simultaneously with safe condition
Analytic function is monitored, can be handled, be analyzed according to monitoring signals, and is warned according to degree of danger, reason push, association
Maintenance personnel is helped to check failure.Wherein, the data that strain transducer 4 obtains pass through the acquisition function entrance power credit of monitor 7
Analysis calculates, and the data that vibrating sensor 5 obtains enter vibration analysis calculation, obliquity sensor 6 by the acquisition function of monitor 7
The data of acquisition enter posture (i.e. tilt angle) analytical calculation by the acquisition function of monitor 7；The core processing of monitor 7
Unit concentrates mechanical analysis, vibration analysis, posture (i.e. tilt angle) analysis result to be aerated the building of 2 security model of blower,
It acquires 2 secure data of draft fan when first operation, and fan safe model is established by gained secure data, built in monitor 7
Conventional fault feature is recorded in feature database, and has feature learning memory function by fault model feature database, in use process
Renewable knowledge base.In system work process, when draft fan 2 or frame 1 or pedestal 3 are abnormal, three kinds of sensings
Abnormal signal data can be passed to monitor 7 by device, analyze Failure risk degree and failure cause by it, and be uploaded to middle control in time
Platform.The core processing unit of monitor 7 realizes that logic chart is as shown in figure 9, when its individual event exception, 1. using PLC programming
In strain transducer 4, learns that fastening loosens, 2. in vibrating sensor 5, by vibration analysis, learn blower (for draft fan 2
Abbreviation) friction aggravation, 2 unbalance dynamic of draft fan, fan assembly loosening, bearing fault etc., 3. inclination sensor, learns
Frame 1 loosens, and when there is multinomial exception, such as 1. strain transducer 4 and 2. vibrating sensor 5 while when occurring abnormal, obtains
Know that fastening loosens, 1. strain transducer 4 is also learnt with when 3. inclination sensor occurs abnormal simultaneously and fastens loosening, and 2. vibration passes
Sensor 5 with 3. inclination sensor occurs abnormal simultaneously when, learn frame 1 loosen, 1. strain transducer 4,2. vibrating sensor 5 with
And 3. inclination sensor learns loosening or other failures simultaneously when occurring abnormal.It can be realized 2 safety of real-time monitoring draft fan
State, and being pushed with local analysis, distant early warning and failure, realize the long-range of equipment safety in Railway Tunnel,
The blank of the domestic application field is subsidized in intelligence.
The embodiment of the present invention provides a kind of 2 safety monitoring method of Railway Tunnel draft fan, can be used in above-mentioned
Device operation in, this method include by strain transducer 4 obtain frame 1 tightening state and pedestal 3 tightening state,
The vibrational state that draft fan 2 is obtained by vibrating sensor 5 is obtained the heeling condition of draft fan 2 by obliquity sensor 6, by
Tightening state, vibrational state and heeling condition establish safe condition model；By tightening state, vibrational state and the inclination
State passes to the monitor 7, and the monitor 7 carries out model initialization according to the safe condition model, then to described
Monitor 7 imports precarious position model；The monitor 7 handles the tightening state, the vibrational state and the inclination
State, and model analysis is carried out, when there is the compromising feature in the precarious position model, the monitor 7 issues early warning.
Using this method, the state of monitoring blower that can be comprehensive realizes three-dimensional modeling, alleviates labour and have high standard
Exactness.
Above scheme is advanced optimized, and it is specially compromising feature to be shown and be uploaded in long-range that monitor 7, which issues early warning,
Control platform.The method of upload includes that wireless network uploads, cable network uploads and by way of cell phone application.Using this
Kind mode can find in time fault message convenient for administrative staff, and the factor that eliminates danger in time.
Above scheme is advanced optimized, then importing risk model to monitor 7 and specifically include is two, first is that presetting
A variety of precarious position models, second is that monitor 7 learns and is supplemented establishing precarious position model after recording actual danger feature.It adopts
With both modes, can make monitor 7 in the early stage just has the ability of identification basic perils state, and can be with ventilation
The time that blower 2 is run is elongated, and the precarious position feature of 7 real-time learning of monitor and record is more, and monitoring analysis is more next
It is more accurate.
Advanced optimize above scheme, please refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, by 4 monitoring framework 1 of strain transducer with
And the tightening state of pedestal 3, specifically include: the bolt for fastening of use has eight, and strain transducer 4 uses two, answers
Become sensor 4 and is made into through-hole nut structure.In actual installation arrangement, one crossbeam, pedestal 3 are installed in the bottom of frame 1
It is placed on the central location of crossbeam, eight screw bolt passes frames 1, crossbeam, pedestal 3 and draft fan 2, and sets vertically
It sets, then recycles nut check on two 4 sets of strain transducers wherein two bolts again.The distribution of eight bolts is
With 2X4 rectangular come what is be distributed, wide to have two bolts with four bolts, i.e. first row has four bolts, and second row also has four
Bolt, such as Fig. 2, it can be seen that they are divided into four bolts symmetrical above and below with a horizontal center line, and this horizontal centre
Line is the axis of draft fan 2.In order to the tightening state of balancing a survey, two strain transducers 4 are separately mounted to
On one of bolt of the one of bolt of one row and second row, two strain transducers 4 with horizontal center line and it is vertical in
The intersection point of heart line is symmetrical, and is close to intersection point.During the installation process, in order to avoid be mounted with the bolt of strain transducer 4 with not
The bolt of installation strain transducer 4 has too big difference, influences subsequent measurement, need to be on the bolt for not installing strain transducer 4
The nut shim 40 more slightly lower than 4 height of strain transducer is set, these nut shims 40 are sandwiched between pedestal 3 and crossbeam.It tightens
Eight bolts, the gravity value of such as Fig. 4, draft fan 2 are denoted as FG, and the fastening force value of four bolts in rectangle length is in order
It is successively denoted as F1, F2, F3 and F4, F2 is the fastening value for being mounted with the bolt of strain transducer 4, obtained one of strain
The calculating formula of fastening force suffered by sensor 4 are as follows: FN=F1'+F2+F3'+F4'+FG/2, wherein Fn' be Fn (n=1,2,
3...8 one-component), when any bolt loosens, the value of FN will appear variation.Specifically: when strain transducer 4 is installed
Position loosens, and F2 is strongly reduced, and when non-sensor monitoring position loosens, Fn reduction causes Fn' to reduce, final strain transducer 4
Stress FN reduces.By the real-time monitoring to strain transducer 4 at two, it can be achieved that the detection and analysis to many places tightening state.
Above scheme is advanced optimized, Fig. 5 and Fig. 6 are please referred to, the vibration shape of draft fan 2 is monitored by vibrating sensor 5
State specifically includes: there are two vibrating sensors 5, respectively monitor draft fan 2 both horizontally and vertically on vibrational waveform；It will
The vibrational waveform measured is passed to the monitor 7, and monitor 7 has the AD acquisition that can carry out waveform recording and frequency analysis respectively
Conversion；The acquisition in real time of monitor 7, processing and analysis vibrational state, when vibrational state beyond safe condition or meets dangerous shape
When state, monitor 7 issues early warning.When work, the starting rotation production vibration of draft fan 2, two vibrating sensors 5 will lead to respectively
The vibrational waveform of 2 level of wind blower and vertical direction is passed to monitor 7, and in-site collecting device has high-speed AD acquisition conversion,
Waveform recording and frequency-domain analysis are carried out, when installing blower and debugging for the first time, confirmation blower is intact, installation fastens, and carries out safe number
According to acquisition.The waveform that the principle of waveform frequency-domain analysis can refer to Fig. 6 changes to analyze, in figure specifically: X1-Y1 is initial frequency-domain
Waveform, X2-Y2 is fault signature frequency-domain waveform, and from the point of view of two waveform diagrams face up and down, a1-i1 and a2-i2 are corresponded, when
When failure, it is evident that wave crest a2-i2 is higher than wave crest a1-i1, from left to right from the point of view of, a2 represents oil rotation, and b2 is represented
Retainer or friction, c2 represent unbalance dynamic, and d2 represents axis and do not loosen to the heart or component, and e2 and the equal proxy component of f2 loosen humorous
Wave, g2 represent the side frequency of bearing, and h2 represents bearing.Initialization data acquisition and recording is in monitor 7, while monitor 7 is pre-stored
Various faults feature database, when system works, the vibration information that the acquisition in real time of monitor 7, processing, analysis vibrating sensor 5 acquire,
When vibration is abnormal, and beyond setting outlier threshold, system will be issued and be warned, special when meeting one or more failures extremely
Sign, system will push failure cause by middle control platform and refer to for Maintenance and Repair personnel, help quick investigation failure, restore ventilation
2 safe condition of blower.
Above scheme is advanced optimized, Fig. 1 and Fig. 7 are please referred to, the skewed of draft fan 2 is monitored by obliquity sensor 6
State specifically includes: draft fan 2 is equipped with draft fan silencer 8, and obliquity sensor 6 is horizontally arranged at draft fan noise elimination
8 bottom of device can monitor the heeling condition of draft fan 2 axially and radially respectively；Monitor 7 in real time to conveying heeling condition into
Row acquisition process, when heeling condition is beyond safe condition or meets precarious position, monitor 7 issues early warning, and will be dangerous special
Sign, which shows and is uploaded in long-range, controls platform.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of Railway Tunnel draft fan safety monitoring assembly, including frame, the ventilation wind being mounted in the frame
Machine and pedestal for carrying the draft fan, it is characterised in that:
It further include the strain transducer of the tightening state of the tightening state and the pedestal for obtaining the frame,
For obtaining the vibrating sensor of the vibrational state of the draft fan,
For obtaining the obliquity sensor of the draft fan heeling condition,
And it can receive and handle the data that the strain transducer, the vibrating sensor and the obliquity sensor obtain
At least one monitor,
The tightening state, the vibrational state and the heeling condition establish safe condition model；
The monitor, for importing danger according to safe condition model progress model initialization, then to the monitor
State model, and when there is compromising feature in the precarious position, issue early warning.
2. a kind of Railway Tunnel draft fan safety monitoring assembly according to claim 1, it is characterised in that: also wrap
Include the long-range middle control platform for managing the monitor.
3. a kind of Railway Tunnel draft fan safety monitoring assembly according to claim 1, it is characterised in that: described
Draft fan, the pedestal and the frame by several bolt fastenings together；The strain transducer is mounted on described
On bolt.
4. a kind of Railway Tunnel draft fan safety monitoring assembly according to claim 1, it is characterised in that: described
Draft fan is equipped with draft fan silencer, and there are two the vibrating sensors, and is installed in the draft fan and eliminates the noise
In device one side wall, one of them described vibrating sensor is vertically arranged, another described vibrating sensor is horizontally disposed and vertical
In the axis of the draft fan.
5. a kind of Railway Tunnel draft fan safety monitoring method can be used for any device of claim 1-4,
It is characterized in that, which comprises
The tightening state of the frame and the tightening state of the pedestal are obtained by the strain transducer, are passed by the vibration
Sensor obtains the vibrational state of the draft fan, and the heeling condition of the draft fan is obtained by the obliquity sensor, by
The tightening state, the vibrational state and the heeling condition establish safe condition model；
The tightening state, the vibrational state and the heeling condition are passed into the monitor, the monitor root
Model initialization is carried out according to the safe condition model, then imports precarious position model to the monitor；
The monitor handles the tightening state, the vibrational state and the heeling condition, and carries out model analysis, when
When there is the compromising feature in the precarious position model, the monitor issues early warning.
6. a kind of Railway Tunnel draft fan safety monitoring method according to claim 5, it is characterised in that: described
It is specially to show and be uploaded to control platform in long-range for the compromising feature that the monitor, which issues early warning,.
7. a kind of Railway Tunnel draft fan safety monitoring method according to claim 5, which is characterized in that described
Importing precarious position model to the monitor again includes:
A variety of precarious position models are preset,
And the monitor learns and is supplemented establishing precarious position model after recording actual danger feature.
8. a kind of Railway Tunnel draft fan safety monitoring method according to claim 5, which is characterized in that described
The tightening state that the frame and the pedestal are monitored by the strain transducer, specifically includes:
The bolt has eight, and there are two the strain transducers, and eight bolts are in the distributed rectangular of 4X2, described in two
Strain transducer is separately mounted on bolt described in two of them；
Other six bolts are mounted on washer, and the height of each washer is respectively less than the height of each strain transducer
Degree；
Eight bolts are tightened, the gravity value of the draft fan is denoted as FG, four spiral shells in rectangle length
The fastening force value of bolt is successively denoted as F1, F2, F3 and F4 in order, tight suffered by one of them the obtained strain transducer
Gu the calculating formula of power is FN=F1'+F2+F3'+F4'+FG/2, wherein Fn' is the one-component of Fn (n=1,2,3...8)；
When any bolt loosens, the value of the FN will appear variation.
9. a kind of Railway Tunnel draft fan safety monitoring method according to claim 5, which is characterized in that described
The vibrational state that the draft fan is monitored by the vibrating sensor, specifically includes:
There are two the vibrating sensors, monitor respectively the draft fan both horizontally and vertically on vibrational waveform；
The vibrational waveform measured is passed to the monitor, the monitor has and can carry out waveform recording and frequency analysis respectively
AD acquire conversion；
The monitor acquires in real time, handles and analyzes the vibrational state, when the vibrational state exceeds the safe shape
State or when meeting the precarious position, the monitor issues early warning.
10. a kind of Railway Tunnel draft fan safety monitoring method according to claim 5, which is characterized in that institute
The heeling condition for monitoring the draft fan by the obliquity sensor is stated, is specifically included:
The draft fan is equipped with draft fan silencer, and the obliquity sensor is horizontally arranged at the draft fan and eliminates the noise
Device bottom can monitor the heeling condition of draft fan axially and radially respectively；
The monitor is acquired processing to the heeling condition, when the heeling condition beyond the safe condition or meets
When the precarious position, the monitor issues early warning.
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| CN108313888A (en) * | 2018-04-04 | 2018-07-24 | 浙江省特种设备检验研究院 | A kind of electric single-beam bridge crane tool metal structure safety monitoring assembly and method |
| JP7390122B2 (en) * | 2019-07-18 | 2023-12-01 | 日立ジョンソンコントロールズ空調株式会社 | Air conditioning system and abnormality detection system |
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