CN207832305U - A kind of subway station unitary air handling unit bear vibration monitoring device - Google Patents
A kind of subway station unitary air handling unit bear vibration monitoring device Download PDFInfo
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- CN207832305U CN207832305U CN201721899573.8U CN201721899573U CN207832305U CN 207832305 U CN207832305 U CN 207832305U CN 201721899573 U CN201721899573 U CN 201721899573U CN 207832305 U CN207832305 U CN 207832305U
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Abstract
The utility model discloses a kind of subway station unitary air handling unit bear vibration monitoring devices, including the vibrating sensor on the unitary air handling unit support of bearing of subway station is arranged, vibrating sensor transmits its signals to the vibration signal processing module of Air Conditioning Facilities BAS system through connecting line；The vibration signal processing module includes that signal acquisition transfer function block, vibration values are averaged functional block and monitoring, alarming module, the vibration simulation signal that vibrating sensor is sent is converted to vibrating numerical signal by signal acquisition transfer function block, vibration values be averaged functional block receive signal acquisition transfer function block send vibrating numerical signal, and using in one minute all vibrating numericals average value as vibrate judgment value.The utility model effectively enhances the performance for ensuring bearing safety monitoring and diagnostic system；Enhance the safe self diagnosis of subway station air-conditioner set and protective capability by air-conditioner set bear vibration detecting system, especially takes precautions against the ability of significant trouble.
Description
Technical field
The utility model belongs to bearing monitoring technical field, is related to a kind of subway station unitary air handling unit bear vibration
Monitoring device.
Background technology
The air-conditioner set bearing of subway station is wearing components, the problem of easily belt friction being caused to be smoldered when it is damaged.
Ordinary circumstance bearing failure pattern has fatigue, abrasion, burn into galvanic corrosion, plastic deformation and fracture, Metro Air conditioner unit bearing failure
Pattern is mainly fatigue, followed by wears and is broken.Theoretically bearing life bears the cube variation of load with bearing, if
The static load (such as apron drawing component static load) of bearing is only considered when design, then the Theoretical Design service life of bearing can give a discount greatly
Button, Metro Air conditioner unit air-conditioning season can according to timetable multiple frequency range continuous operations again, bearing movable load will it is very big and
Among variation, so dynamic loading is one of the principal element that vibration is Metro Air conditioner unit bearing failure.
The vibration that Metro Air conditioner unit transfinites is mainly shown as the harm of equipment itself：
1, it influences unit performance, jeopardize the low unit economy of set structure safety and health.
2, vibration can cause vibrating member to be contacted with the uneven of static hardware, lead to the uneven friction of parts, cause
Bearing damage (abrasion of bearing inner race outer shroud, outer ring inner ring abrasion, retainer fracture, ball are seriously worn), then causes skin
Band tension is insufficient, skids, belt deflection, eventually causes belt and generates high temperature, unstable wear.
3, vibration can cause the fastening bolt of wind turbine, motor to loosen, or even fracture, make the moving components such as wind turbine, motor
Installation fixed structure generates excessive dynamic stress, thus leads to fatigue damage, and cuts the accident of thereby resulting in and further expand.
4, vibration is so that air conditioning box body frame and panel sealing loosening, cause unit air-tightness to decline, so as to cause leaking out
Rate increases, and reduces air-conditioning cleanliness factor.
Invention content
The utility model intends to solve the technical problem by providing a kind of subway station unitary air handling unit bear vibration prisons
Device is surveyed, it is undiscovered for a long time to avoid failure caused by air-conditioner set bearing, preferably instruct the maintenance of air-conditioner set.
The utility model is to be achieved through the following technical solutions：
A kind of subway station unitary air handling unit bear vibration monitoring device, including setting is in subway station combined type sky
The vibrating sensor on the unit support of bearing, vibrating sensor is adjusted to transmit its signals to Air Conditioning Facilities BAS system through connecting line
Vibration signal processing module；The vibration signal processing module includes that signal acquisition transfer function block, vibration values are averaged
It is worth functional block and monitoring, alarming module, the vibration simulation signal that signal acquisition transfer function block sends vibrating sensor is converted
For vibrating numerical signal, vibration values are averaged functional block and receive the vibrating numerical signal that signal acquisition transfer function block is sent,
And using in one minute all vibrating numericals average value as vibration judgment value；Monitoring, alarming module monitors vibrate the change of judgment value
Change, when vibration judgment value reaches setting value, monitoring, alarming module sends out alarm signal.
The vibrating sensor is set as：Two vibrating sensors, peace are respectively installed in the front and back bearings of air-conditioner set
Position is on the bearing bracket of the bearing of belt, and one of right angle setting, one is horizontally mounted.
The connection of vibrating sensor and the vibration signal processing module is：
Vibrating sensor is connected to the panel terminal box outside air conditioning unit case, panel terminal box by sensor signal lines
External signal line go out wiring through computer room electric wire crane span structure, lead to Air Conditioning Facilities BAS system far end I/O casees, then connect through coaxial cable
Connect vibration signal processing module.
The vibration signal processing module is also connected with comprehensively monitoring server, shows and shakes on comprehensively monitoring interface
Dynamic numerical value, vibrating numerical variation chart and alarm condition.
The vibration signal processing module and the connection of comprehensively monitoring server are：
Vibrating numerical signal is sent to comprehensive monitoring system interchanger by vibration signal processing module, and comprehensive monitoring system is handed over
It changes planes and vibrating numerical signal is reached into comprehensively monitoring protocol converter, comprehensively monitoring protocol converter again sends out vibrating numerical signal
It send to comprehensively monitoring server, comprehensive monitoring system client obtains vibrating numerical by inquiring server.
Compared with prior art, the utility model has technique effect beneficial below：
The utility model take the lead in propose in subway station air-conditioner set bear vibration situation implement on-line performance examine
Disconnected, the comparison by comparing a variety of bearing performance monitoring modes, which determines, uses monitoring vibration speed, and vibrating sensor is determined
Quantity, installation site and mounting means；And realize bearing vibration signal acquisition system and station BAS system and comprehensively monitoring
The seamless combination of system realizes bearing performance characterization parameter AT STATION with the real-time monitoring of control centre, and effectively enhancing ensures
The performance of bearing safety monitoring and diagnostic system；Enhance subway station air-conditioner set by air-conditioner set bear vibration detecting system
Safe self diagnosis and protective capability especially take precautions against the ability of significant trouble.
Description of the drawings
Fig. 1 is the connection block diagram of the utility model.
Wherein, 1 is vibrating sensor, and 2 be panel terminal box, and 3 be computer room electric wire crane span structure, and 4 be BAS system far end I/O casees,
5 be vibration signal processing module, and 6 be comprehensive monitoring system interchanger, and 7 be comprehensively monitoring protocol converter, and 8 take for comprehensively monitoring
Business device, 9 be comprehensive monitoring system client.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings, it is described be explanation to the utility model without
It is to limit.
It is the state of dynamic monitoring bearing for the most important countermeasure of bearing failure, early detection bearing fault tracks it
Development trend, and determine when to need to change bearing.
The Condition Monitoring Technology of rolling bearing includes mainly that vibration measurement measures and infrared imaging, abrasive dust with analysis, temperature
It checks, sound detection and lubrication analysis, table 1 combines these detection techniques to the different failure modes (trouble location) of bearing
Applicability.
1 monitoring technology of table and rolling bearing failure mode
As can be seen that each detection technique is not quite similar to the covering power of bearing potential failure form.Wherein, vibration
Spreadability is most strong, also most widely used.Air-conditioner set vibrates, peeling, impression, rust also very sensitive to the damage of bearing
Erosion, crackle, abrasion etc. can all reflect in bear vibration measurement.
It to realize the extraction monitoring of Metro Air conditioner unit bearing vibration signal, and is combined, completes with existing station BAS system
Metro Air conditioner unit bear vibration dynamic is monitored on-line, and unitary air handling unit bearing in subway station provided by the utility model shakes
Monitoring device is moved, including the vibrating sensor being arranged on the unitary air handling unit support of bearing of subway station, vibrating sensor
The vibration signal processing module of Air Conditioning Facilities BAS system is transmitted its signals to through connecting line；The vibration signal processing mould
Block includes that signal acquisition transfer function block, vibration values are averaged functional block and monitoring, alarming module, signal acquisition transfer function
The vibration simulation signal that vibrating sensor is sent is converted to vibrating numerical signal by block, and vibration values are averaged functional block reception
Signal acquisition transfer function block send vibrating numerical signal, and using in one minute all vibrating numericals average value as vibrate
Judgment value；Monitoring, alarming module monitors vibrate the variation of judgment value, when vibration judgment value reaches setting value, monitoring, alarming module
Send out alarm signal.
The vibrating sensor is set as：Two vibrating sensors, peace are respectively installed in the front and back bearings of air-conditioner set
Position is on the bearing bracket of the bearing of belt, and one of right angle setting, one is horizontally mounted.
Further, the connection of vibrating sensor and the vibration signal processing module is：
Vibrating sensor is connected to the panel terminal box outside air conditioning unit case, panel terminal box by sensor signal lines
External signal line go out wiring through computer room electric wire crane span structure, lead to Air Conditioning Facilities BAS system far end I/O casees, then connect through coaxial cable
Connect vibration signal processing module.
The vibration signal processing module is also connected with comprehensively monitoring server, shows and shakes on comprehensively monitoring interface
Dynamic numerical value, vibrating numerical variation chart and alarm condition.
The vibration signal processing module and the connection of comprehensively monitoring server are：
Vibrating numerical signal is sent to comprehensive monitoring system interchanger by vibration signal processing module, and comprehensive monitoring system is handed over
It changes planes and vibrating numerical signal is reached into comprehensively monitoring protocol converter, comprehensively monitoring protocol converter again sends out vibrating numerical signal
It send to comprehensively monitoring server, comprehensive monitoring system client obtains vibrating numerical by inquiring server.
Specific embodiment is given below.
Referring to Fig. 1, subway station unitary air handling unit bear vibration monitoring device adds at air-conditioner set bearing AT STATION
Vibrating sensor 1 is filled, vibrating sensor 1 is connected to the panel terminal box 2 outside air conditioning unit case, face by sensor signal lines
Plate terminal box 2 leads to Air Conditioning Facilities BAS system far end I/O casees 4 by computer room electric wire crane span structure 3, then connects BAS through coaxial cable
Vibrating numerical signal is sent to comprehensive monitoring system and exchanged by the vibration signal processing module 5 of system, vibration signal processing module 5
Analog quantity is reached comprehensively monitoring protocol converter 7 by machine 6, comprehensive monitoring system interchanger 6 again, finally reaches comprehensively monitoring service
Device 8, comprehensive monitoring system client 9 obtain vibrating numerical signal by inquiring comprehensively monitoring server 8.At comprehensively monitoring interface
Upper display vibration data, event and alarm, ring control dispatcher can remotely be monitored online, once there is data exception,
And alarm, BAS system can send out halt command or by comprehensive monitoring system interface to machine from trend unit when situation is serious
Group sends out halt command, and stoppage protection is carried out to it.
Sensor mounting location and quantity：
Vibrating sensor is mainly vibration data when extracting bearing operation, in order to accurately acquire unit bearing as far as possible
Vibration signal, sensor mounting location should as close to bearing carrying zone position and installation can be fastened：It is close to pacify position
Being installed on the bearing bracket of the bearing of belt, on bearing bracket can meet the requirements, and the bearing close to belt is stress side
Bearing, therefore can reach good result mounted on belt side.
The sensor installation of standard should be that front and back bearings respectively fill 2, vertical one, level one, it is contemplated that group at present
Box-like air-conditioner set bearing fault is happened at fore bearing, and combines existing BAS system and comprehensive monitoring system, selects water
Safety fills a sensor and can be monitored in real time to bearing state well, when completing vibrating numerical exception and alarm, stops
The requirement of machine, therefore selection is horizontally mounted a vibrating sensor.
Vibration signal processing module and comprehensively monitoring：
Vibration signal processing module packet buckles vibration signals collecting transfer function block, vibration values are averaged functional block and monitoring
Module (alarm and halt command issue).
Signal acquisition transfer function block completes vibration signal analog quantity (4-20mA) to digital quantity (15420-30840)
Transformation, and transformation result is converted into numerical value identical with vibration-testing range, which is then passed through vibration values and is averaged
The statistics of functional block and it is averaged calculatings, the average value of all vibrating numericals shakes as judgment value is vibrated in final one minute
When dynamic judgment value reaches setting value, capable of automatic alarm and stopping air-conditioner set operation.
Vibration judgment value does following design in BAS system：
Set alarming value：7.1mm/s, vibration judgment value are more than alarming value, and BAS system starts alarm.Maintenance personal is connected to
After unit bear vibration fault alarm to the unit on the spot or it is long-range shut down, each parts in wind turbine portion are checked (including：Wind
Machine bearing, fan shaft, belt and belt wheel ...).
Set stoppage protection value：10mm/s, vibration judgment value is more than stoppage protection value, and BAS system stops air conditioner immediately
Group operation, maintenance personal carry out inspection and maintenance wind turbine.
Comprehensively monitoring part：Display vibrating numerical, vibrating numerical variation chart and report are added on comprehensively monitoring server
The module of alert condition.
Specific using effect is given below：
Testing station air-conditioner set KT-A1, KT-A2, KT-B1, KT-B2 vibration velocity sampled data is captured, shape
Vibration velocity data trend figure when at tetra- different frequencies of 50HZ, 40HZ, 30HZ, 20HZ.Obtain following information：
1, four air-conditioner sets bear vibration speed in 50HZ is maximum, and bear vibration speed is minimum when 20HZ；
2, four air-conditioner sets bear vibration velocity contrast in 20HZ is little, and unit vibration is smaller, operates steadily.
3, four air-conditioner sets bear vibration velocity contrast in 50HZ is larger, and KT-B2 vibration velocities are up to 10mm/
S, KT-A2 vibration velocity take second place, and reach 6mm/s, KT-A1 and KT-B1 vibration velocities are relatively stable, essentially 3-4mm/s.
4, air-conditioner set KT-B2 bear vibration speed in 50HZ has been more than to shut down to protect in essentially identical running environment
Shield value：10mm/s；And other unit bear vibration velocity amplitudes are satisfied by standard.
In order to verify the utility model can early warning unit failure well, for KT-B2 in 50HZ bear vibration speed
The case where being more than stoppage protection value, after replacing the unit bearing in time, unit bear vibration judgment value be reduced to 7mm/s with
Under, meet standard.It is online to illustrate that air-conditioner set bear vibration monitoring system can be good at carrying out subway air-conditioner set bearing
Dynamic monitoring, realizes alarm and shutdown of the bear vibration when transfiniting, and systematic science, it is reliable, safely, conveniently, it is economical.
Example given above is to realize that the utility model preferably example, the utility model is not limited to above-mentioned implementation
Example.Those skilled in the art according to the technical characteristic of technical solutions of the utility model made it is any it is nonessential addition,
It replaces, belongs to the scope of protection of the utility model.
Claims (5)
1. a kind of subway station unitary air handling unit bear vibration monitoring device, which is characterized in that including being arranged in subway
The vibrating sensor stood on the unitary air handling unit support of bearing, vibrating sensor transmit its signals to air conditioner through connecting line
The vibration signal processing module of room BAS system；The vibration signal processing module includes signal acquisition transfer function block, vibration
Value is averaged functional block and monitoring, alarming module, the vibration simulation that signal acquisition transfer function block sends vibrating sensor
Signal is converted to vibrating numerical signal, and vibration values are averaged functional block and receive the vibration number that signal acquisition transfer function block is sent
Value signal, and using in one minute all vibrating numericals average value as vibration judgment value；The vibration of monitoring, alarming module monitors is sentenced
The variation of disconnected value, when vibration judgment value reaches setting value, monitoring, alarming module sends out alarm signal.
2. unitary air handling unit bear vibration monitoring device in subway station as described in claim 1, which is characterized in that described
Vibrating sensor be set as：Two vibrating sensors are respectively installed in the front and back bearings of air-conditioner set, peace position is close to skin
On the bearing bracket of the bearing of band, one of right angle setting, one is horizontally mounted.
3. unitary air handling unit bear vibration monitoring device in subway station as described in claim 1, which is characterized in that described
Vibrating sensor and the connection of vibration signal processing module be：
Vibrating sensor is connected to the panel terminal box outside air conditioning unit case by sensor signal lines, panel terminal box it is outer
Portion's signal wire goes out wiring through computer room electric wire crane span structure, leads to Air Conditioning Facilities BAS system far end I/O casees, then shake through coaxial cable connection
Dynamic signal processing module.
4. unitary air handling unit bear vibration monitoring device in subway station as described in claim 1, which is characterized in that described
Vibration signal processing module be also connected with comprehensively monitoring server, shown on comprehensively monitoring interface vibrating numerical, vibration
Numerical value change chart and alarm condition.
5. unitary air handling unit bear vibration monitoring device in subway station as claimed in claim 4, which is characterized in that described
Vibration signal processing module and the connection of comprehensively monitoring server be：
Vibrating numerical signal is sent to comprehensive monitoring system interchanger, comprehensive monitoring system interchanger by vibration signal processing module
Vibrating numerical signal is reached into comprehensively monitoring protocol converter, vibrating numerical signal is sent to by comprehensively monitoring protocol converter again
Comprehensively monitoring server, comprehensive monitoring system client obtain vibrating numerical by inquiring server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721899573.8U CN207832305U (en) | 2017-12-29 | 2017-12-29 | A kind of subway station unitary air handling unit bear vibration monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721899573.8U CN207832305U (en) | 2017-12-29 | 2017-12-29 | A kind of subway station unitary air handling unit bear vibration monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207832305U true CN207832305U (en) | 2018-09-07 |
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ID=63390578
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721899573.8U Expired - Fee Related CN207832305U (en) | 2017-12-29 | 2017-12-29 | A kind of subway station unitary air handling unit bear vibration monitoring device |
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| CN (1) | CN207832305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074942A (en) * | 2021-03-31 | 2021-07-06 | 国网北京市电力公司 | Monitoring device, bearing seat, air pump and transformer |
-
2017
- 2017-12-29 CN CN201721899573.8U patent/CN207832305U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074942A (en) * | 2021-03-31 | 2021-07-06 | 国网北京市电力公司 | Monitoring device, bearing seat, air pump and transformer |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180907 Termination date: 20181229 |
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| CF01 | Termination of patent right due to non-payment of annual fee |