CN203454837U - Direct air cooling vibration on-line monitor system - Google Patents
Direct air cooling vibration on-line monitor system Download PDFInfo
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- CN203454837U CN203454837U CN201320382247.5U CN201320382247U CN203454837U CN 203454837 U CN203454837 U CN 203454837U CN 201320382247 U CN201320382247 U CN 201320382247U CN 203454837 U CN203454837 U CN 203454837U
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Abstract
Disclosed is a direct air cooling vibration on-line monitor system. The system comprises a bus vibration sensor disposed on a blower bridge used for fixing an air cooling blower, a decentralised control system comprising a bus controller, and a bus cable connected between the bus vibration sensor and the bus controller. The monitor system provided by the utility model overcomes problems that blower vibration of the direct air cooling system cannot be timely monitored in the prior art.
Description
Technical field
The utility model belongs to direct air cooling system observation and control technology field, power plant, relates in particular to a kind of Direct Air-Cooled vibration online monitoring system.
Background technology
Fieldbus FCS: be arranged on manufacture or the field device of process area and the automaton in control room between digital, serial, the data/address bus of multi-point.
DCS: scattered control system.
Direct Air-Cooled: the steam discharge of steam turbine directly carrys out condensation with air, between air and steam, carry out heat exchange, its technological process is that turbine discharge passes through thick discharge duct to outdoor air cooling tubes condenser, and axial flow cooling blower makes air stream subcooler outer surface, and steam discharge is condensed into water.
Direct air cooling system, because its water-saving result is remarkable, is promoted at home, and development and the water-saving technology of ，Wei China power industry that has a extensive future have been made outstanding contributions.Direct Air-cooled Unit design feature has determined that the vibration parameters of monitoring air cooling platform is very important.Real-Time Monitoring to air cooling platform vibration, will improve security and the economy of air cooling system operation greatly, promotes that Direct Air-Cooling Technology is applied even more extensively in power station.
On the other hand, the promotion and application of this several years field bus technique FCS thermal power plants, have accumulated certain operating experience, add the fast development of digital intelligent instrument, make to build Digitization of fossil-fired power plant and have obtained unprecedented progress.
The vibration of air cooling platform fan bridge is the important parameter of air cooling safe operation, accomplishes fan bridge oscillation real time monitoring extremely important.The reason that causes fan bridge vibration has: the self-vibration characteristic of fan bridge; The imbalance of air cooling blower fan running (out-of-balance force when out-of-balance force, motor run well when out-of-balance force, leaf destruction while normally moving); The vibration of drive shaft system; Unit load changes; Monsoon etc.
Air cooling structural system bottom is reinforced concrete hollow tubing string, and A type support and windbreak are arranged at top, and top also has major diameter breather line.The rigidity that the rigidity of structure upper space steel truss provides considerably beyond lower rebar concrete tubing string; The equipment on structure top is structure primary load, causes the most of mass concentration of structure on top.Power plant's Direct Air-Cooled fan bridge is fixed on steel truss conventionally, directly bears static load and the dynamic load of air cooling blower fan, reductor, motor.The hazard of vibration that rotation blower fan causes air cooling platform is larger, especially will avoid the resonant frequency of air cooling platform.
Existing program is to adopt vibroswitch to monitor the vibration of fan bridge mostly at present, can only accomplish to stop blower fan running when fan vibration is large, to play the effect of protection air cooling platform and air cooling blower fan, can not accomplish the Real-Time Monitoring to the vibration of air cooling blower fan crane span structure.
Utility model content
The purpose of this utility model be to provide a kind of online monitoring system solve in prior art cannot Real-Time Monitoring fan vibration problem.
For realizing above object, the utility model proposes a kind of Direct Air-Cooled vibration online monitoring system, this system comprises bus type vibrating sensor, is arranged on for the fixing fan bridge of air cooling blower fan; Scattered control system, comprises bus control unit; Bus cable, is connected between described bus type vibrating sensor and bus control unit.
According to an aspect of the present utility model, described bus type vibrating sensor is one or more, and each bus type vibrating sensor is arranged on the fan bridge for fixing every air cooling blower fan; Each bus type vibrating sensor is connected to described bus control unit by described bus cable.
According to an aspect of the present utility model, described bus type vibrating sensor is identical with the bus protocol of described bus control unit, and described bus type vibrating sensor is connected directly to described bus control unit by bus cable.
According to an aspect of the present utility model, described bus type vibrating sensor is different from the bus protocol of described bus control unit, and described bus type vibrating sensor is connected to described bus control unit by bus cable via protocol converter.
According to an aspect of the present utility model, the bus protocol of described bus type vibrating sensor and described bus control unit is PROFIBUS – DP agreement.
According to an aspect of the present utility model, the bus protocol of described bus type vibrating sensor is PROFIBUS – PA agreement, and described protocol converter is PA-DP protocol converter, and the bus protocol of described bus control unit is PROFIBUS – DP agreement.
According to an aspect of the present utility model, the bus protocol of described bus type vibrating sensor is PROFIBUS or MODIBUS agreement.
According to an aspect of the present utility model, the decentralised control unit that described bus control unit is scattered control system.
According to an aspect of the present utility model, described Direct Air-Cooled vibration online monitoring system also comprises the operator station being connected with bus control unit; Described bus type vibrating sensor, for measuring the fan bridge vibration corresponding to every air cooling blower fan, is uploaded to described bus control unit by bus cable by vibration data; Described operator station, for the real-time vibration data of comprehensive each fan bridge and form the real-time oscillator field data of whole air cooling monoblock, to real-time oscillator field data analysis and processing, there is the air cooling blower fan of abnormal vibration in prediction.
Direct Air-Cooled Platform Vibration field online monitoring system is exactly to utilize bussing technique FCS to solve the problem of the oscillation real time monitoring of air cooling tubes condenser, adopts scattered control system to carry out Analysis of Vibration Characteristic, improves security and the economy of unit operation.Direct Air-Cooled fan vibration online monitoring system can be accomplished the real-time monitoring to the vibration of air cooling platform fan bridge.By the vibration of air cooling platform fan bridge is in real time detected and sets up whole air cooling platform vibration data, accomplish that abnormal vibration situation early knows, process in time, effectively reduce the shutdown number of times of air cooling blower fan, be conducive to air cooling system safe and stable operation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of Direct Air-Cooled vibration online monitoring system the first embodiment that the utility model proposes;
Fig. 2 is the schematic diagram of Direct Air-Cooled vibration online monitoring system the second embodiment that the utility model proposes.
The specific embodiment
The following stated is better embodiment of the present utility model, does not therefore limit protection domain of the present utility model.
Fig. 1 is the first embodiment the utility model proposes, and is specially the Direct Air-Cooled Platform Vibration field online monitoring system that adopts PROFIBUS-DP bus.Comprising for example rubber blanket 101, blower fan 102, transmission mechanism 103, in the original system of fan bridge 104, add bus type vibrating sensor 105, bus type vibrating sensor 105 is connected with the DCS bus control unit 106 that is positioned between air cooling DCS electronics 108, and bus control unit 106 is connected with the operator station 107 of DCS.Described DCS operator station can comprise the equipment such as computer that system is monitored.
Fig. 2 is the second embodiment the utility model proposes, and is specially the Direct Air-Cooled Platform Vibration field online monitoring system that adopts PROFIBUS-PA bus.The mark identical with Fig. 1 represents identical equipment.In this system, bus type vibrating sensor 105 is different from the bus protocol of DCS bus control unit 106, therefore, and between access protocol converter 201.
Take the specific embodiments of 300MW Direct Air-cooled Unit as example explanation Direct Air-Cooled Platform Vibration field online monitoring system.Each is provided with 1 bus type vibrating sensor for the fixing fan bridge being positioned on steel truss of air cooling blower fan.The air cooling tubes condenser of every air cooling blower fan unit is totally 6 row air cooling blower fans, often show 5 air cooling blower fans, with bus cable, connect respectively each for the fixing bus type vibrating sensor that is positioned at the fan bridge on steel truss of air cooling blower fan, like this, every unit needs 30 bus cables to be connected to 30 bus type vibrating sensors altogether.If bus type vibrating sensor is identical with the bus protocol of DCS controller, all adopt PROFIBUS – DP bussing technique, bus cable can be directly connected on DCS bus control unit, as shown in Figure 1.If bus type vibrating sensor is different from the bus protocol of DCS bus control unit, bus type vibrating sensor adopts PROFIBUS – PA bussing technique, intermediate demand installs PA-DP protocol converter additional and carries out protocol conversion, and then is connected on DCS bus control unit, as shown in Figure 2.
As can be seen here, the utility model solves the problems of the technologies described above taked technical scheme: adopt bus type vibrating sensor, measure respectively the crane span structure vibration corresponding to every air cooling blower fan, then by bus cable, vibration data is uploaded to DCS, by each air cooling blower fan crane span structure, vibrated in real time the real-time oscillator field that forms whole air cooling monoblock, computing equipment by operator station is to real-time oscillator field data analysis, process, predict in advance the unit of air cooling blower fan generation abnormal vibration, the excessive Fan Equipment that causes of pre-vibration proof is damaged, cause that resonance brings danger to air cooling platform, improve the security of air cooling operation.
Direct Air-Cooled Platform Vibration field online monitoring system is mainly comprised of parts such as bus type vibrating sensor, bus cable, DCS bus control units.Bus type vibrating sensor adopts PROFIBUS or MODIBUS communications protocol, preferably adopts and has shatter-proof, to adapt to the functions such as adverse circumstances sensor.Bus cable adopts Shielded Twisted Pair copper core cable or multimode fibre.The PROFIBUS-PA bus cable of thermal power plant's recommendation is Type A, and cross-sectional area of conductor amasss as 0.8mm
2, maximum resistance is 44 Ω/km, maximum cable total length is 1900m.PROFIBUS-DP bus cable generally adopts RS485 Shielded Twisted Pair.The in the situation that, electromagnetic environment long in transmission range being severe, use optical fiber.PROFIBUS multimode fibre transmission range can reach 2-3km, and anti-electromagnetic interference capability is good compared with twisted-pair feeder.DCS bus control unit is the dispersion treatment cells D PU of Direct Air-Cooled control system DCS, built-in bus protocol chip or additional bus protocol communication module.Bus control unit specifically can adopt the FCS controller of Siemens SIMATIC, it adds PROFIBUS DP communication module CP443-5 by redundancy-type CPU module S7417H and forms, each FCS controller is supported at most 5 CP443-5 modules, add the communication module of CPU self, each FCS controller is supported at most 6 redundancy PROFIBUS DP networks, every PROFIBUS DP network connects at most 4 DP network segments totally 125 slave stations, PA equipment is connected to PROFIBUS DP network by DP-PA protocol converter, each DP-PA protocol converter connects at most 160 slave stations of 5 PA network segments.PROFIBUS DP baud rate can be selected between 9.6Kbit/s～12Mbbit/s, PROFIBUS PA baud rate is fixed as 31.25Kbit/s, the site address scope 0～127 of PROFIBUS DP network support, wherein several special addresses retain, and address in addition can be for DP equipment at will.The site address scope of PROFIBUS PA network support is 1～32.DP-PA protocol converter as DP slave station, take a DP address at PROFIBUS DP network, and concerning the PA network segment, it is equivalent to the main website of the equipment on the spot of PA, in the PA network segment on the spot equipment can with DP network on site address repeat.As can be seen here, Direct Air-Cooled Platform Vibration field online monitoring system is mainly comprised of parts such as vibrating sensor, computer cable, DCS controllers.Vibrating sensor adopts PROFIBUS or MODIBUS communications protocol, is exclusively used in outdoor vibration measurement, has shatter-proof, adaptation adverse circumstances function.Bus cable adopts sub-thread copper core polyethylene insulation, 105 ℃ of flame-proof polyvinyl chloride sheaths of low-smoke low-halogen, pair twist formula, copper strips split screen always to shield computer control cable.DCS controller can be the DPU of Direct Air-Cooled control system DCS.
The beneficial effects of the utility model are:
Monitor the vibration data of every Fans, avoid every Fans should be because of the impact of fitful wind, the impact of unit load, air cooling blower fan running impact or move with other blower fan and the vibration that occurs being harmful to simultaneously.By DCS picture, predict in advance the unit of air cooling blower fan generation abnormal vibration, shut down and process in time, pre-vibration proof is excessive to be caused Fan Equipment to damage or causes that resonance brings danger to air cooling platform, improves the security of air cooling operation.
The utility model passes through power plant air cooling platform fan bridge vibration detection, the Vibration Condition of blower fan bridge while adopting bus-type vibrating sensor monitoring Direct Air-Cooled blower fan system to move, set up the real-time monitoring system of the vibration of air cooling platform crane span structure under different operating modes, guarantee air cooling blower fan safe operation.This Direct Air-Cooled Platform Vibration field online monitoring system adopts bus type vibrating sensor, measure respectively each for the fixedly vibration of the steel truss fan crane span structure of air cooling blower fan, by bus cable, vibration data is uploaded to DCS, by each, for the fixing vibration of the steel truss fan crane span structure of air cooling blower fan, form air cooling oscillator field, by DCS system, to oscillator field data analysis, processing, improve security and the economy of Air-cooled Unit operation.
It should be noted that above-described the utility model embodiment, do not form the restriction to the utility model protection domain.Any modification of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc.; the TT&C system that for example adopts intelligent vibration sensor, bus cable, bus control unit to form in every case, within all should being included in claim protection domain of the present utility model.
Claims (9)
1. a Direct Air-Cooled vibration online monitoring system, is characterized in that, described system comprises:
Bus type vibrating sensor, is arranged on for the fixing fan bridge of air cooling blower fan;
Scattered control system, comprises bus control unit;
Bus cable, is connected between described bus type vibrating sensor and bus control unit.
2. Direct Air-Cooled according to claim 1 is vibrated online monitoring system, it is characterized in that:
Described bus type vibrating sensor is one or more, and each bus type vibrating sensor is arranged on the fan bridge for fixing every air cooling blower fan;
Each bus type vibrating sensor is connected to described bus control unit by described bus cable.
3. Direct Air-Cooled according to claim 1 is vibrated online monitoring system, it is characterized in that:
Described bus type vibrating sensor is identical with the bus protocol of described bus control unit, and described bus type vibrating sensor is connected directly to described bus control unit by bus cable.
4. Direct Air-Cooled according to claim 1 is vibrated online monitoring system, it is characterized in that:
Described bus type vibrating sensor is different from the bus protocol of described bus control unit, and described bus type vibrating sensor is connected to described bus control unit by bus cable via protocol converter.
5. Direct Air-Cooled according to claim 3 is vibrated online monitoring system, it is characterized in that:
The bus protocol of described bus type vibrating sensor and described bus control unit is PROFIBUS – DP agreement.
6. Direct Air-Cooled according to claim 4 is vibrated online monitoring system, it is characterized in that:
The bus protocol of described bus type vibrating sensor is PROFIBUS – PA agreement, and described protocol converter is PA-DP protocol converter, and the bus protocol of described bus control unit is PROFIBUS – DP agreement.
7. according to the Direct Air-Cooled vibration online monitoring system described in claim 3 or 4, it is characterized in that:
The bus protocol of described bus type vibrating sensor is PROFIBUS or MODIBUS agreement.
8. Direct Air-Cooled according to claim 1 is vibrated online monitoring system, it is characterized in that:
Described bus control unit is the decentralised control unit of scattered control system.
9. Direct Air-Cooled according to claim 1 is vibrated online monitoring system, it is characterized in that:
Described Direct Air-Cooled vibration online monitoring system also comprises the operator station being connected with bus control unit;
Described bus type vibrating sensor, for measuring the fan bridge vibration corresponding to every air cooling blower fan, is uploaded to described bus control unit by bus cable by vibration data;
Described operator station, for the real-time vibration data of comprehensive each fan bridge and form the real-time oscillator field data of whole air cooling monoblock, to real-time oscillator field data analysis and processing, there is the air cooling blower fan of abnormal vibration in prediction.
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| CN201320382247.5U CN203454837U (en) | 2013-06-29 | 2013-06-29 | Direct air cooling vibration on-line monitor system |
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| CN201320382247.5U CN203454837U (en) | 2013-06-29 | 2013-06-29 | Direct air cooling vibration on-line monitor system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616477A (en) * | 2015-01-06 | 2015-05-13 | 上海自动化仪表股份有限公司 | Profibus-PA technology-based multi-channel real-time temperature measurement method |
| CN106568582A (en) * | 2015-10-12 | 2017-04-19 | 华电宁夏灵武发电有限公司 | Air cooling island framework vibration monitoring method |
| CN106593960A (en) * | 2015-10-14 | 2017-04-26 | 华电宁夏灵武发电有限公司 | Bulk treatment method for vibration of air cooling island |
-
2013
- 2013-06-29 CN CN201320382247.5U patent/CN203454837U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616477A (en) * | 2015-01-06 | 2015-05-13 | 上海自动化仪表股份有限公司 | Profibus-PA technology-based multi-channel real-time temperature measurement method |
| CN106568582A (en) * | 2015-10-12 | 2017-04-19 | 华电宁夏灵武发电有限公司 | Air cooling island framework vibration monitoring method |
| CN106593960A (en) * | 2015-10-14 | 2017-04-26 | 华电宁夏灵武发电有限公司 | Bulk treatment method for vibration of air cooling island |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: INNER MONGOLIA ELECTRIC POWER SURVEY DESIGN INSTIT Free format text: FORMER NAME: INNER MONGOLIA ELECTRICAL POWER INVESTIGATE AND DESIGN INSTITUTE |
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| CP01 | Change in the name or title of a patent holder |
Address after: 010010 Hohhot, the Inner Mongolia Autonomous Region Tin Road, No. 209 Patentee after: INNER MONGOLIA POWER SURVEY & DESIGN INSTITUTE Co.,Ltd. Address before: 010010 Hohhot, the Inner Mongolia Autonomous Region Tin Road, No. 209 Patentee before: Inner Mongolia Electric Power Survey Design Institute |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |