CN107575411A - 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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- CN107575411A CN107575411A CN201710562607.2A CN201710562607A CN107575411A CN 107575411 A CN107575411 A CN 107575411A CN 201710562607 A CN201710562607 A CN 201710562607A CN 107575411 A CN107575411 A CN 107575411A
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Abstract
The present invention relates to Railway Tunnel field, provide a kind of Railway Tunnel draft fan safety monitoring assembly, including framework, draft fan, base, strain transducer, vibrating sensor, obliquity sensor and can receive and handle strain transducer, at least one monitor for the data that vibrating sensor and obliquity sensor obtain.A kind of Railway Tunnel draft fan safety monitoring assembly of the present invention, by analyzing safe condition in real time, distant early warning can be carried out to a variety of safety failures.A kind of Railway Tunnel draft fan safety monitoring method is provided, available for above-mentioned device, including：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 present 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 technology
In recent years, domestic track traffic cause flourishes, and high ferro, intercity, motor-car, subway obtain in national each province and city
To promoting energetically, also make significant headway, and tunnel is through the important channel of the obstructions such as city, mountains and rivers, river, due to
It is even more to need ventilation of discharging fume that tunnel, which is needed when air exchange, especially fire, therefore is respectively mounted draft fan and is aerated work on demand
Make.
Tunnel ventilation blower fan is mainly used in the longitudinal exhausting system in the tunnels such as highway, railway and subway, there is provided whole
Thrust；The sensitive part in semi-transverse ventilation system or transversal ventilation system is can also be used for, such as the import and export in tunnel, plays induction
Air-flow or smoke evacuation etc. act on.Due to the ventilation function of draft fan, effect and security requirement, the ventilation in Railway Tunnel
Blower fan is typically mounted at the both sides in tunnel, and is fixed with firm steel construction.
The frequent start and stop of draft fan, rotation produce vibration, be distributed it is discrete, blower fan once break down, be not easy as maintenance person
Discover, by regular manual inspection, efficiency is low, correctness is poor, it is impossible to timely early warning, causes huge artificial burden.Due to height
Train speed is fast in fast railway tunnel, piston wind-force is strong, requires very high to blower fan and its installation reliability, the failure of blower fan and
Structure safety problem will directly threaten bullet train and passenger's life safety.
The content of the invention
It is an object of the invention to provide a kind of Railway Tunnel draft fan safety monitoring assembly and method, pass through
Monitoring to the tightening state of draft fan, vibrational state and heeling condition, its security model structure and safety analysis are realized,
Early warning is carried out to safety problem, is differentiated, reduces the threat hidden danger to the train that passes through, reduces cost of labor, improve ventilation wind
The security reliability of machine.
To achieve the above object, the embodiment of the present invention provides following technical scheme：A kind of Railway Tunnel draft fan
Safety monitoring assembly, including framework, the draft fan in the framework and the bottom for carrying the draft fan
Seat, in addition to for obtaining the strain transducer of the tightening state of the framework and the tightening state of the base, for obtaining
The vibrating sensor of the vibrational state of the draft fan is taken, the inclination angle for obtaining the draft fan heeling condition senses
Device, and can receive and handle the strain transducer, the data that the vibrating sensor and the obliquity sensor obtain
At least one monitor.
Further, in addition to for managing the long-range middle control platform of the monitor.
Further, if the draft fan, the base and the framework are tightened together by bolt stem；It is described to answer
Become sensor to be arranged on the bolt.
Further, the draft fan is provided with draft fan silencer, and the vibrating sensor has two, and is respectively mounted
In the side wall of draft fan silencer one, one of them described vibrating sensor is vertically arranged, and another described vibration passes
Sensor is horizontally disposed and perpendicular to the axis of the draft fan.
The embodiment of the present invention provides another technical solution：A kind of Railway Tunnel draft fan safety monitoring method,
Available for above-mentioned device, methods described includes：The tightening state of the framework and described is obtained by the strain transducer
The tightening state of base, the vibrational state of the draft fan is obtained by the vibrating sensor, is obtained by the obliquity sensor
The heeling condition of the draft fan is taken, safety is established 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
Device processing tightening state, the vibrational state and the heeling condition, and model analysis is carried out, when the appearance danger
During compromising feature in state model, the monitor sends early warning.
Further, it is specially to show the compromising feature and be uploaded to long-range middle control that the monitor, which sends early warning,
Platform.
Further, it is described to include again to monitor importing precarious position model：Pre-set a variety of precarious position moulds
Type, and the monitor learn and are supplemented establishing precarious position model after recording actual danger feature.
Further, the tightening state that the framework and the base are monitored by the strain transducer, specific bag
Include：The bolt has eight, and the strain transducer has two, and eight bolts are in 4X2 distributed rectangular, should described in two
Become sensor to be separately mounted to described in two of which on bolt；Other six bolts are mounted on packing ring, each packing ring
Height be respectively less than the height of each strain transducer；Eight bolts are tightened, the gravity value of the draft fan is designated as
FG, the fastening force value of four bolts in rectangle length are designated as F1, F2, F3 and F4, obtained successively in order
One of them described strain transducer suffered by the calculating formula of fastening force be FN=F1'+F2+F3'+F4'+FG/2, wherein,
Fn' is Fn (n=1,2,3...8) one-component；When any bolt loosens, change occurs in the value of the FN.
Further, the vibrational state that the draft fan is monitored by the vibrating sensor, is specifically included：It is described to shake
Dynamic sensor has two, 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 collection conversions that can carry out waveform recording and frequency analysis respectively；It is described
Monitor gathers, handles and analyzed the vibrational state in real time, when the vibrational state beyond the safe condition or meets
During the precarious position, the monitor sends early warning.
Further, the heeling condition that the draft fan is monitored by the obliquity sensor, is specifically included：It is described logical
Wind assembling has draft fan silencer, and the obliquity sensor is horizontally arranged at the 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 exceeds the safe condition or meets the precarious position, the monitor sends early warning.
Compared with prior art, the beneficial effects of the invention are as follows：A kind of Railway Tunnel draft fan safety monitoring dress
Put, the three-dimensional parameter such as tightening state, fan vibration state and blower fan heeling condition by monitoring blower frame and base plate
Information, carry out analyzing safe condition in real time, a variety of safety failures can be carried out with distant early warning, and investigation event can be assisted by analyzing
Barrier, repair, greatly reduce the security incident risk in Railway Tunnel, reduce artificial periodic inspection cost and omit 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, reduces cost of labor；Efficiency, accuracy rate are high, and can timely early warning.
Brief description of the drawings
Fig. 1 is a kind of Railway Tunnel draft fan safety monitoring assembly provided in an embodiment of the present invention and method
Structural representation；
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 theory 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 reference：1- frameworks；2- draft fans；3- bases；4- strain transducers；40- nut shims；5- vibrations pass
Sensor；6- obliquity sensors；7- monitors；8- draft fan silencers.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the 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 base 3, draft fan 2 are arranged in framework 1, and then base 3 carries draft fan 2, in framework
1 left and right sides can accommodate two draft fans 2, and framework 1 is connected with the built-in screw in surrounding concrete, and framework 1 is logical
Wind blower fan 2 provides support and protection, and base 3 and framework 1 can vibrate in blower fan work.Also include strain transducer 4, vibration passes
Sensor 5 and obliquity sensor 6, strain transducer 4 is used for obtaining the tightening state after framework 1 installs and base 3 installs
Tightening state afterwards, vibrating sensor 5 are used for obtaining vibrational state when draft fan 2 works, and obliquity sensor 6 is used for obtaining
Heeling condition when draft fan 2 works, in other words, as obtaining whether its posture is rectified.Finally also 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 obliquity sensor 6 by cable.One monitor 7 can handle a ventilation
The vibrational state and heeling condition of blower fan 2, and the tightening state of the framework 1 supporting with this draft fan 2 and base 3.Can root
Factually the quantity of border draft fan 2 sets one or more monitors 7.By the monitoring to 2 comprehensive state of draft fan,
Three-dimension monitor is carried out to draft fan 2, has not only liberated labour, reduces the cost manually monitored, and with high
Accuracy.
It is specific embodiment below：
Optimize such scheme, in addition to remotely middle control platform, monitor 7 can be managed by controlling platform in long-range, and will be obtained
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.
Further optimize such scheme, referring to Fig. 1, strain transducer 4 is the fastening for obtaining framework 1 and base 3
State, the mode of acquisition has a lot, first, if draft fan 2, base 3 also have framework 1 to be all fastened on one by bolt stem
Rise, so strain transducer 4 is arranged on these bolts by we, you can directly whether sensing fastens；Can also directly will be more
Individual strain transducer 4 is separately mounted near the bearing of framework 1 and base 3, if loosening, strain transducer 4 can also
Induce rapidly.
Further optimize such scheme, refer to Fig. 1, Fig. 2 and Fig. 3, draft fan 2 uses horizontal installation, and we adopt
The bolt for being used to fasten has eight, and strain transducer 4 uses two, and strain transducer 4 makes through hole nut structure.In reality
In the mounting arrangements of border, one crossbeam is installed in the bottom of framework 1, base 3 is placed on the middle position of crossbeam, eight bolts according to
It is secondary to pass through framework 1, crossbeam, base 3 and draft fan 2, and be vertically arranged, two strain transducers 4 are then enclosed on it again
In on two bolts, recycle nut check.The distribution of eight bolts is distributed with 2X4 rectangulars, with four bolts,
Wide to have 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
Bar 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 being mounted with that the bolt of strain transducer 4 and the bolt for not installing strain transducer 4 have too big difference
It is different, influence subsequently to measure, the nut highly more lower slightly than strain transducer 4 need to be set on the bolt for not installing strain transducer 4
Pad 40, these nut shims 40 are sandwiched between base 3 and crossbeam.In real work, two strain transducers 4 are by blower fan 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.
Further optimize such scheme, refer to Fig. 1 and Fig. 5, draft fan 2 is provided with draft fan silencer 8, is used for
Noise when draft fan 2 works is eliminated, vibrating sensor 5 is provided with two, is installed in the side wall of draft fan silencer 8 one
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
Individual vibrating sensor 5 is horizontally disposed and perpendicular to the axis of draft fan 2, for measuring the vibration of the horizontal direction of draft fan 2
State.Vibrating sensor 5 can also be directly installed on draft fan 2 and measured.Two vibrating sensors 5 are vibration
Velocity sensor either acceleration transducer, it is capable of the original waveform of the vibration of accurate measurement 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,
Because rotation produces vibration, when the normal operation of draft fan 2, fastening structure, its oscillating component meets theory α coefficient scope, when logical
When the body of wind blower fan 2 and structure division produce abnormal, the distribution of time domain vibrational waveform, frequency domain vibrational waveform will all become
Change, therefore monitor 7 analyzes the vibration safety state of blower fan by multidate information just by monitoring, analyzing Vibration Condition.
Further optimize such scheme, refer to Fig. 1 and Fig. 7, obliquity sensor 6 is horizontally arranged at draft fan silencer
8 bottoms, the tilt angles in all directions of draft fan 2 can be measured.The bottom of draft fan silencer 8 can also be arranged close to
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,
Ensure what is rectified in fact, then install obliquity sensor 6 again, now the inclination for the draft fan 2 that obliquity sensor 6 obtains
Status signal is basic value, and when the signal of obliquity sensor 6 changes, monitor 7 is drawn logical by the comparison with basic value
Whether the heeling condition of the either whole device of wind blower fan 2 is normal.
Further optimize such scheme, refer to Fig. 8 and Fig. 9, monitor 7 possesses Signals collecting function, and it can be received
The data that above-mentioned three kinds of sensors obtain；High-speed sampling semiotic function is provided simultaneously with, waveform recording, the frequency domain of signal can be realized
Conversion；Fan safe model information acquisition function is provided simultaneously with, fan safe model can be established and initialize security information；Together
When possess risk model writing function, all kinds of fault models under non-secure states can be prestored；It is provided simultaneously with safe condition
Analytic function is monitored, can be handled, analyzed according to monitoring signals, and is warned according to degree of danger, reason push, association
Attendant is helped to investigate failure.Wherein, the acquisition function entrance power credit that the data that strain transducer 4 obtains pass through 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. angle of inclination) analysis by the acquisition function of monitor 7 and calculated；The core processing of monitor 7
Unit concentrates mechanical analysis, vibration analysis, posture (i.e. angle of inclination) analysis result to be aerated the security model of blower fan 2 structure,
Gather the secure data of draft fan 2 during first operation, and fan safe model is established by gained secure data, built in monitor 7
Fault model feature database, conventional fault feature is recorded in feature database, and possesses feature learning memory function, during use
Renewable knowledge base.When in system work process, when draft fan 2 or framework 1 or base 3 occur abnormal, three kinds sense
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 uses PLC programming realizations, and its logic chart is as shown in figure 9, when its individual event exception, 1.
In strain transducer 4, learn that fastening loosens, 2. in vibrating sensor 5, by vibration analysis, learn blower fan (for draft fan 2
Abbreviation) friction aggravation, the unbalance dynamic of draft fan 2, fan assembly loosening, bearing fault etc., 3. inclination sensor, learns
Framework 1 loosens, and when occurring multinomial abnormal, such as 1. strain transducer 4 and when 2. vibrating sensor 5 occurs abnormal simultaneously, obtains
Know that fastening loosens, when 1. strain transducer 4 occurs abnormal simultaneously with 3. inclination sensor, also learn that fastening loosens, 2. vibration passes
When sensor 5 occurs abnormal simultaneously with 3. inclination sensor, learn that framework 1 loosens, 1. strain transducer 4,2. vibrating sensor 5 with
And 3. inclination sensor simultaneously when occurring abnormal, learns loosening or other failures.The safety of monitoring draft fan 2 in real time can be realized
State, and being pushed with local analysis, distant early warning and failure, realize the long-range of equipment safety in Railway Tunnel,
Intellectuality, subsidize the blank of the domestic application field.
The embodiment of the present invention provides a kind of safety monitoring method of Railway Tunnel draft fan 2, can be used in above-mentioned
Device operation in, this method include the tightening state of framework 1 and the tightening state of base 3 are obtained by strain transducer 4,
The vibrational state of draft fan 2 is obtained by vibrating sensor 5, the heeling condition of draft fan 2 is obtained 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 sends early warning.
Using this method, the state of monitoring blower fan that can be comprehensive, three-dimensional modeling is realized, labour is alleviated and there is high standard
Exactness.
Further optimize such scheme, it is specially during compromising feature show and is uploaded to remotely that monitor 7, which sends early warning,
Control platform.The method of upload includes wireless network upload, cable network uploads and by way of cell phone application.Using this
Kind mode, can be easy to administrative staff to find fault message in time, and the factor that eliminates danger in time.
Further optimize such scheme, then import risk model to monitor 7 and specifically include for two, first, pre-setting
A variety of precarious position models, second, monitor 7 learns and is supplemented establishing precarious position model after recording actual danger feature.Adopt
With both modes, the ability that can cause monitor 7 that just there is identification basic perils state in the early stage, and can be with ventilation
The time that blower fan 2 is run is elongated, and the precarious position feature of the real-time learning of monitor 7 and record is more, and it is more next that it monitors analysis
It is more accurate.
Further optimize such scheme, refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, by the monitoring framework 1 of strain transducer 4 with
And the tightening state of base 3, specifically include：The bolt for being used to fasten used has eight, and strain transducer 4 uses two, should
Become sensor 4 and make through hole nut structure.In actual installation arrangement, one crossbeam, base 3 are installed in the bottom of framework 1
It is placed on the middle position of crossbeam, eight screw bolt passes frameworks 1, crossbeam, base 3 and draft fan 2, and sets vertically
Put, then again by two 4 sets of strain transducers wherein on two bolts, recycle nut check.The distribution of eight bolts is
With 2X4 rectangulars 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, during two strain transducers 4 are with horizontal center line and vertically
The intersection point of heart line is symmetrical, and is close to intersection point.In 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 subsequently to measure, need to be on the bolt for not installing strain transducer 4
The nut shim 40 highly more lower slightly than strain transducer 4 is set, and these nut shims 40 are sandwiched between base 3 and crossbeam.Tighten
Eight bolts, such as Fig. 4, the gravity value of draft fan 2 are designated as FG, and the fastening force value of four bolts in rectangle length is in order
It is designated as F1, F2, F3 and F4 successively, F2 is the fastening value for the bolt for being mounted with strain transducer 4, obtained one of strain
The calculating formula of fastening force suffered by sensor 4 is：FN=F1'+F2+F3'+F4'+FG/2, wherein, Fn' be Fn (n=1,2,
3...8 one-component), when any bolt loosens, change occurs in FN value.Specially：When strain transducer 4 is installed
Position is loosened, and F2 is strongly reduced, and when non-sensor monitoring position loosens, Fn, which reduces, causes Fn' to reduce, final strain transducer 4
Stress FN reduces.By the real-time monitoring to strain transducer 4 at two, the detection and analysis to many places tightening state can be achieved.
Further optimize such scheme, refer to Fig. 5 and Fig. 6, the vibration shape of draft fan 2 is monitored by vibrating sensor 5
State, specifically include：Vibrating sensor 5 has two, respectively monitor draft fan 2 both horizontally and vertically on vibrational waveform；Will
The vibrational waveform measured is passed to the monitor 7, and monitor 7 has the AD collections that can carry out waveform recording and frequency analysis respectively
Conversion；The collection in real time of monitor 7, processing and analysis vibrational state, when vibrational state beyond safe condition or meets dangerous shape
During state, monitor 7 sends early warning.During work, draft fan 2 starts rotation production vibration, and two vibrating sensors 5 respectively will be logical
Wind blower fan 2 is horizontal and the vibrational waveform of vertical direction is passed to monitor 7, and in-site collecting device possesses high-speed AD acquisition conversion,
Waveform recording and frequency-domain analysis are carried out, when installing blower fan and debugging for the first time, confirmation blower fan is intact, installation fastens, and carries out safe number
According to collection.The waveform that the principle of waveform frequency-domain analysis refers to Fig. 6 changes to analyze, and is specially in figure：X1-Y1 is initial frequency-domain
Waveform, X2-Y2 are fault signature frequency-domain waveforms, and from the point of view of two oscillograms face up and down, a1-i1 and a2-i2 is corresponded, when
During failure, it is evident that crest a2-i2 is higher than 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 axle and the heart or component do not loosened, and e2 and the equal proxy components of f2 loosen humorous
Ripple, 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 collection in real time of monitor 7, processing, the vibration information that vibrating sensor 5 gathers is analyzed,
Exception occurs when vibrating, and beyond outlier threshold is set, system will send warning, when exception meets that one or more failures are special
Sign, system will push failure cause by middle control platform and be referred to for Maintenance and Repair personnel, help quick investigation failure, recover ventilation
The safe condition of blower fan 2.
Further optimize such scheme, refer to Fig. 1 and Fig. 7, the skewed of draft fan 2 is monitored by obliquity sensor 6
State, specifically include：Draft fan 2 is provided with draft fan silencer 8, and obliquity sensor 6 is horizontally arranged at draft fan noise elimination
The bottom of device 8, the heeling condition of draft fan 2 axially and radially can be monitored respectively；Monitor 7 enters to conveying heeling condition in real time
Row acquisition process, when heeling condition exceeds safe condition or meets precarious position, monitor 7 sends early warning, and will be dangerous special
Sign shows and is uploaded to long-range middle control platform.
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 changes, modification can be carried out to these embodiments, replace 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 framework, the ventilation wind in the framework
Machine and the base for carrying the draft fan, it is characterised in that：
Also include being used for the strain transducer for obtaining the tightening state of the framework and the tightening state of the base,
For the vibrating sensor for the vibrational state for obtaining the draft fan,
For obtaining the obliquity sensor of the draft fan heeling condition,
And it can receive and handle the strain transducer, the data that the vibrating sensor and the obliquity sensor obtain
At least one monitor.
A kind of 2. 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.
A kind of 3. Railway Tunnel draft fan safety monitoring assembly according to claim 1, it is characterised in that：It is described
If draft fan, the base and the framework are tightened together by bolt stem；The strain transducer is arranged on described
On bolt.
A kind of 4. Railway Tunnel draft fan safety monitoring assembly according to claim 1, it is characterised in that：It is described
Draft fan is provided with draft fan silencer, and the vibrating sensor has two, and is installed in the draft fan and eliminates the noise
In the side wall of device one, one of them described vibrating sensor is vertically arranged, and 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, available for any described devices of claim 1-4, its
It is characterised by, methods described includes：
The tightening state of the framework and the tightening state of the base are obtained by the strain transducer, is 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 precarious position model is imported to the monitor；
The monitor handles 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 sends early warning.
A kind of 6. Railway Tunnel draft fan safety monitoring method according to claim 5, it is characterised in that：It is described
It is specially to show the compromising feature and be uploaded to long-range middle control platform that the monitor, which sends early warning,.
7. a kind of Railway Tunnel draft fan safety monitoring method according to claim 5, it is characterised in that described
Importing precarious position model to the monitor again includes：
A variety of precarious position models are pre-set,
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, it is characterised in that described
The tightening state of the framework and the base is monitored by the strain transducer, is specifically included：
The bolt has eight, and the strain transducer has two, and eight bolts are in 4X2 distributed rectangular, described in two
Strain transducer is separately mounted to described in two of which on bolt；
Other six bolts are mounted on packing ring, and the height of each packing ring is respectively less than the height of each strain transducer
Degree；
Eight bolts are tightened, the gravity value of the draft fan is designated as FG, four spiral shells in rectangle length
The fastening force value of bolt is designated as F1, F2, F3 and F4 successively 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 Fn (n=1,2,3...8) one-component；
When any bolt loosens, change occurs in the value of the FN.
9. a kind of Railway Tunnel draft fan safety monitoring method according to claim 5, it is characterised in that described
The vibrational state of the draft fan is monitored by the vibrating sensor, is specifically included：
The vibrating sensor has two, 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 collection conversion；
The monitor gathers, handles and analyzed the vibrational state in real time, when the vibrational state exceeds the safe shape
State or when meeting the precarious position, the monitor sends early warning.
A kind of 10. Railway Tunnel draft fan safety monitoring method according to claim 5, it is characterised in that institute
The heeling condition that the draft fan is monitored by the obliquity sensor is stated, is specifically included：
The draft fan is provided with draft fan silencer, and the obliquity sensor is horizontally arranged at the draft fan and eliminated the noise
Device bottom, the heeling condition of draft fan axially and radially can be monitored respectively；
The monitor is acquired processing to the heeling condition, when the heeling condition beyond the safe condition or meets
During the precarious position, the monitor sends early warning.
Priority Applications (1)
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| CN112240624A (en) * | 2019-07-18 | 2021-01-19 | 日立江森自控空调有限公司 | Air conditioning system and abnormality detection system |
| CN112240625A (en) * | 2019-07-18 | 2021-01-19 | 日立江森自控空调有限公司 | Air conditioning system and abnormality detection system |
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