CN206945128U - A kind of nuclear power generating sets steamer torsional vibration monitoring device - Google Patents
A kind of nuclear power generating sets steamer torsional vibration monitoring device Download PDFInfo
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- CN206945128U CN206945128U CN201720975103.9U CN201720975103U CN206945128U CN 206945128 U CN206945128 U CN 206945128U CN 201720975103 U CN201720975103 U CN 201720975103U CN 206945128 U CN206945128 U CN 206945128U
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Abstract
It the utility model is related to nuclear steam turbine group vibrotechnique field,More particularly to a kind of nuclear power generating sets steamer torsional vibration monitoring device,Wherein,Steam turbine is connected with generator by shafting,The shafting is included by the coaxially connected multiple shaft parts of multiple clutches,Each shaft part is respectively provided with identical rotating speed,One end of the shafting is also associated with head measure speed gearses,The twisting vibration monitoring device includes gear speed measuring device,Generator voltage current collecting device,Monitoring modular,Analyzing and diagnosing module,Communication module,Database server and output module,The twisting vibration monitoring device energy accurate measurements nuclear power generating sets steamer torsional vibration data,Help to analyze the anomaly that torsional vibration of shafting fluctuates with power network fluctuation or lifting power,Pass through analyzing and diagnosing module intelligent diagnostics,The basic reason that steam turbine produces twisting vibration can be analyzed,And corresponding operation is provided and suggested,Avoid steam turbine equipment damage and non-programmed halt.
Description
Technical field
It the utility model is related to nuclear steam turbine group vibrotechnique field, and in particular to a kind of nuclear power generating sets steam turbine reverses
Vibration monitoring device.
Background technology
At present, nuclear power generating sets visual plant has been provided with vibration monitor system（It is often referred to bending vibration monitoring system）, by right
The on-line monitoring of equipment bending vibration and regular off-line measurement are so as to grasp the vibration general level of the health of equipment, and note abnormalities vibration, and then
It is proposed that maintenance is suggested and provides foundation for prospective maintenance.Turbine shafting vibration monitoring is same, by daily to unit
Cycle vibration measuring, overhaul stage ascending, descending power platform carry out vibration monitoring and analysis, it can be estimated that Turbo-generator Set operation conditions
And level of vibration.
Unit twist vibration not only result in fatigue life of shafting loss, influence the life-span of unit, and can cause
Unit bending vibration increase, this problem be mainly reflected in Shaft Torque change and in caused shaft coupling imbalance.In unit operation
When, each shaft coupling of shafting can bear certain moment of torsion.When unit burden with power changes or occurs causing the torsion of change in torque to shake
During dynamic failure, the moment of torsion born also accordingly changes.If connecting bolt of coupling clamp force is insufficient or uneven, moment of torsion changes
Shaft coupling generation can be made to dehisce, deform for change or displacement, causes the change of poised state, triggers the vibration of adjacent bearing.
When Turbo-generator Set twists vibration fault, easily occur alternate stress by a relatively large margin in shafting, produce
The position of Fatigue Life Expenditure.Twisting vibration dangerouse cross-section is the main object of torsional vibration of shafting safety analysis, by right
Dangerouse cross-section under all kinds of twisting vibration failures carries out Stress Check and Fatigue Life Expenditure calculates, under study of various twisting vibration
Method for evaluating safety.
Generally, the shape of each section of rotor of steam turbine is that mid diameter is larger, and both ends diameter is smaller, the rotary inertia of shafting
It is concentrated mainly on rigidity in the middle part of each section of rotor, each rank twisting vibration mode shape slope maximum of shafting mainly appears on each section and turned
Between son, the node of the vibration shape also tends to come across this.
As nuclear power generating sets gradually participate in the extensive use of peak regulation and power transmission network new technology, add steam turbine, generate electricity
Occur coupling between machine, power transmission network and then cause shaft system of unit the possibility of twisting vibration, domestic most nuclear powers occur
Station has monitored that power network fluctuation causes the anomaly of generator unit shaft system vibration and wave motion.Power is impacted or lifts in electric network fault
Repeatedly there is the super alarm problem of shafting bending vibration in period, nuclear power Half Speed machine（There is step in bending vibration in short-term）, may have with twisting vibration
Close；In addition, electric network composition is increasingly sophisticated, especially power network HVDC power transmission and grid side serial compensation capacitance are all to produce torsion to shake
Unavoidably there is twisting vibration phenomenon in dynamic risk factor, unit.
But existing vibration monitoring means can not be analyzed steamer torsional vibration, it can not find that turbine shafting reverses
Imbalance between active torque and the moment of resistance, and the damage caused by this moment unbalance shaft can not be assessed.
The content of the invention
The utility model provides a kind of nuclear power generating sets steamer torsional vibration monitoring device, so as to realize twisting vibration intelligence
Monitoring and diagnosis, twisting vibration harm is identified in advance, avoid that security incident occurs.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：A kind of nuclear power generating sets steamer torsional vibration
Monitoring device, wherein, steam turbine is connected with generator by shafting, and the shafting includes coaxially connected by multiple clutches
Multiple shaft parts, each shaft part are respectively provided with identical rotating speed, and one end of the shafting is also associated with head measure speed gearses, described
Twisting vibration monitoring device includes：
Gear speed measuring device, there is the detecting head of the head measure speed gearses, to gather the rotating speed of the shafting；
Generator voltage current collecting device, with the primary voltage mutual inductance being built in the generator failure recording cabinet
Device and the electrical connection of primary current transformer, to gather the three-phase current of the generator and voltage waveform；
Monitoring modular, it is connected, receives with the gear speed measuring device, the generator voltage current collecting device signal respectively
Collect the data that the gear speed measuring device and the generator voltage current collecting device are gathered and monitored on-line；
Communication module, electrically connected with the monitoring modular, the data of the monitoring modular real-time collecting are transmitted；
Database server, to receive the data that the communication module is sent；
Output module, the data in the database server are read out and shown.
Further, the twisting vibration monitoring device also includes analyzing and diagnosing module, the analyzing and diagnosing module difference
Electrically connected with the monitoring modular and the communication module, when the monitoring module monitors to twisting vibration occur, to described
Data in monitoring modular are analyzed and diagnosed.
Further, the twisting vibration monitoring device is also included to show the gear speed measuring device and the generating
Electromechanical current voltage harvester surveys the display device of data, the display device and the gear speed measuring device and the generating
Electromechanical current voltage harvester is electrically connected.
Further, the gear speed measuring device includes speed probe and the first analog input card, the speed probe
Press close to the head measure speed gearses and gap left between the head measure speed gearses, first analog input card respectively with institute
State speed probe and monitoring modular electrical connection.
Further, the generator voltage current collecting device includes secondary voltage transformer and secondary current mutual inductance
Device, the secondary voltage transformer electrically connects with the primary voltage transformer and the second analog input card respectively, described secondary
Current transformer electrically connects with the primary current transformer and the 3rd analog input card respectively, second analog input card and institute
The 3rd analog input card is stated to electrically connect with the monitoring modular respectively.
Further, the monitoring modular electrically connects with alarm module.
Further, the monitoring modular, the analyzing and diagnosing module, the communication module are located in rack.
Further, the rack is provided with to improve the conducting type door seal electricity bar of anti-Radio frequency interference ability.
After above technical scheme, the utility model has the following advantages that compared with prior art：The twisting vibration is supervised
Survey device energy accurate measurements nuclear power generating sets steamer torsional vibration data, help to analyze torsional vibration of shafting with power network fluctuation or
The anomaly for lifting power and fluctuating；The twisting vibration monitoring device can analyze vapour by analyzing and diagnosing module intelligent diagnostics
Turbine produces the basic reason of twisting vibration, and provides corresponding operation and suggest, so as to avoid steam turbine equipment damage with it is unplanned
Shut down.
Brief description of the drawings
Accompanying drawing 1 is the structural framing figure of nuclear power generating sets steamer torsional vibration monitoring device of the present utility model.
Wherein, 1, steam turbine；2nd, generator；201st, primary voltage transformer；202nd, primary current transformer；3rd, shafting；
4th, head measure speed gearses；5th, gear speed measuring device；501st, speed probe；502nd, the first analog input card；6th, generator voltage electricity
Flow harvester；601st, secondary voltage transformer；602nd, the second analog input card；603rd, secondary current transformer；604th, the 3rd adopt
Collect board；7th, monitoring modular；8th, analyzing and diagnosing module；9th, communication module；10th, database server；11st, output module；12、
Display device；13rd, alarm module；14th, clutch.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the utility model is described in further detail.
As shown in figure 1, a kind of nuclear power generating sets steamer torsional vibration monitoring device, wherein, steam turbine 1 is logical with generator 2
Cross shafting 3 to be connected, shafting 3 includes being respectively provided with identical by the coaxially connected multiple shaft parts of multiple clutches 14, each shaft part
Rotating speed, one end of shafting 3 are also associated with head measure speed gearses 4.Because the twisting vibration failure of shafting 3 is broadly divided into two major classes, i.e.,
The class torsion vibration response that resonates and electromagnetic torque transient impact class torsion vibration response.Rung for both different twisting vibrations
Should, the Monitoring Focus of this twisting vibration monitoring device is rotating speed, the three-phase current and voltage of generator 2 of head measure speed gearses 4
Signal.
The twisting vibration monitoring device includes gear speed measuring device 5, generator voltage current collecting device 6, monitoring modular
7th, analyzing and diagnosing module 8, communication module 9, database server 10 and output module 11.
Gear speed measuring device 5 includes the analog input card 502 of speed probe 501 and first, the leading section of speed probe 501
Press close to head measure speed gearses 4 and gap, the rearward end of speed probe 501 and first are left between head measure speed gearses 4
Analog input card 50 electrically connects, and speed probe 501 tests the speed tooth to gather the rotating speed of head measure speed gearses 4 so as to obtain head
The angular speed and angular displacement, the first analog input card 502 of wheel 4 electrically connect with monitoring modular 7.Gear speed measuring device 5 is about adopted each second
Collect 3000 torsional angle signals.When head measure speed gearses 4 twist vibration, each tooth on head measure speed gearses 4 is by turning
Minor variations can occur for the time needed for fast sensor 501, thus can accurate measurements shafting 3 twisting vibration situation of change.
Primary voltage transformer 201 and primary current transformer 202 are provided with the failure wave-recording cabinet of generator 2, is generated electricity
Electromechanical current voltage harvester 6 includes secondary voltage transformer 601 and secondary current transformer 603, secondary voltage transformer 601
Electrically connected respectively with the analog input card 602 of primary voltage transformer 201 and second, secondary current transformer 603 respectively with it is once electric
The analog input card 604 of current transformer 202 and the 3rd electrically connects.Secondary voltage transformer 601 is gathering the three-phase voltage of generator 2
Waveform, secondary current transformer 603 is to gather the three-phase current waveform of generator 2, the three-phase voltage waveform and three-phase current
Waveform is signal of the generator 2 after primary current transformer 201 and primary voltage transformer 202 convert respectively.Second adopts
The collection analog input card 604 of board 602 and the 3rd electrically connects with the monitoring modular 7 respectively.
Gear speed measuring device 5 and generator voltage current collecting device 6 electrically connect with display device 12 respectively, display device
12 showing data that gear speed measuring device 5 and generator voltage current collecting device 6 are surveyed.
Monitoring modular 7 electrically connects with gear speed measuring device 5 and generator voltage current collecting device 6 respectively, to collect
Data that gear speed measuring device 5 and generator voltage current collecting device 6 are gathered simultaneously carry out twisting vibration on-line monitoring.
Monitoring modular 7 to gear speed measuring device 5 surveying data and generator voltage current collecting device 6 is surveyed
Data carry out real-time torsional oscillation amplitude analysis, torsional oscillation spectrum analysis and electromagnetic torque, steam torque and set state analysis.
Monitoring modular 7 is connected with the signal of alarm module 13.When the signal that monitoring modular 7 monitors is to torsional oscillation amplitude or torsional oscillation
When the threshold value more than setting is influenceed caused by frequency, alarm module 13 sends warning reminding, while monitoring modular 7 is recorded and respectively adopted
Collect passage twisting vibration and front and rear data occur, and call analyzing and diagnosing module 8 to carry out torsional oscillation response and safety analysis, analyzed
Journey judges including failure mode, the state of temperature of shafting 3 determines, mechanical force moment and electromagnetic torque synthesis, model for torsional vibration are emulated and answered
Power breakdown diagnosis etc..
When monitoring modular 7 monitors that impact class twisting vibration occurs for shafting 3, analyzing and diagnosing module 8 is putting failure in order
After bag, that is, start impact class analysis on Torsional Vibration program, calculate the Fatigue Life Expenditure and shaft of 3 each dangerouse cross-section of shafting
3 twisting vibration reasons make diagnosis；When monitoring that sub-synchronous oscillation occurs for shafting 3, analyzing and diagnosing module 8 starts subsynchronous
Analysis of the oscillation program, the Fatigue Life Expenditure of 3 each dangerouse cross-section of shafting is calculated, generate far.
Communication module 9 is sent to database server 10 to the Real-time Monitoring Data for being surveyed monitoring modular 7；Occurring
During twisting vibration, the warning message in monitoring modular 7 and the failure bag and accident analysis data of analyzing and diagnosing module 8 are sent
To database server 10.
Database server 10 receives the data that communication module 9 is sent, and database server 10 is located at engineer station, by one
Platform server is formed, and data storage is carried out using oracle database.Its major function be storing history and failure logging,
And the fault data bag in twisting vibration generating process.Database server 10 uses hierarchy to historical data, will
Historical data base is divided into level Four：Day storehouse, Zhou Ku, moon storehouse and Nian Ku, the storage time interval per one-level storehouse is each different, day storehouse,
Zhou Ku, moon storehouse use circulating rolling storage method, after year stock's year and a day data, will regenerate a new year storehouse table.Output
Module 11 is being read out the data in database server 10 and show.
Monitoring modular 7, analyzing and diagnosing module 8, communication module 9 are located in rack.To improve the anti-Radio frequency interference of rack
Ability, rack are provided with conducting type door seal electricity bar.In addition, rack outer surface needs smooth clean and tidy, do not weld, rivet or outside
The bolt head of appearance.
Rack steel plate thickness is at least 2.5mm, and the support member in cabinet should have enough intensity, ensures normal carry and installation
Do not deform afterwards.Rack needs dust-proof, Anti-drip, is resistant to the vibration for the high and low temperature and supporting structure specified.In rack
Each terminal block and terminal, which should have, clearly to be indicated, and is consistent with drawing and connection table.Terminal block, welding connector, cable are walked
Wire casing and connecting groove all should be by " non-burning " type material manufactures.Terminal block in rack should be arranged in the ground for being easily installed wiring
Side, from more than bottom of cabinet 300mm, from below cabinet top 150mm, distance is not less than 200mm between row and row.Weak electric signal in rack
Terminal block of the terminal block physically with control, power supply current supply circuit separates, and inside should be provided with 220VAC illuminating lamps and standard is inserted
Seat.In rack should be provided with independent system earth, casing safely, signal reference ground, cable shield and corresponding grounding copper bar,
And it should be electrically isolated with the unearthed circuit board of inside configuration.
The twisting vibration data of twisting vibration monitoring device energy accurate measurements nuclear power generating sets steam turbine 1, contribute to analysis axis
It is the anomaly that 3 twisting vibrations are fluctuated with power network fluctuation or lifting power, in addition, being examined by the intelligence of analyzing and diagnosing module 8
It is disconnected, the basic reason that steam turbine 1 produces twisting vibration can be analyzed, and corresponding operation is provided and suggested, so as to avoid the equipment of steam turbine 1
Damage and non-programmed halt.
For above-described embodiment only to illustrate technical concepts and features of the present utility model, its object is to allow be familiar with technique
Personage can understand content of the present utility model and implement according to this, the scope of protection of the utility model can not be limited with this.
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover the scope of protection of the utility model it
It is interior.
Claims (8)
1. a kind of nuclear power generating sets steamer torsional vibration monitoring device, wherein, steam turbine is connected with generator by shafting, described
Shafting includes being respectively provided with identical rotating speed, the axle by the coaxially connected multiple shaft parts of multiple clutches, each shaft part
One end of system is also associated with head measure speed gearses, and the twisting vibration monitoring device includes：
Gear speed measuring device, there is the detecting head of the head measure speed gearses, to gather the rotating speed of the shafting；
Generator voltage current collecting device, with the primary voltage transformer that is built in the generator failure recording cabinet and
Primary current transformer electrically connects, to gather the three-phase current of the generator and voltage waveform；
Monitoring modular, it is connected respectively with the gear speed measuring device, the generator voltage current collecting device signal, collects institute
State the data that gear speed measuring device and the generator voltage current collecting device are gathered and monitored on-line；
Communication module, electrically connected with the monitoring modular, the data of the monitoring modular real-time collecting are transmitted；
Database server, to receive the data that the communication module is sent；
Output module, the data in the database server are read out and shown.
A kind of 2. nuclear power generating sets steamer torsional vibration monitoring device according to claim 1, it is characterised in that：The torsion
Turning vibration monitoring device also includes analyzing and diagnosing module, the analyzing and diagnosing module respectively with the monitoring modular and the communication
Module is electrically connected, and when the monitoring module monitors to twisting vibration occur, the data in the monitoring modular are analyzed
And diagnosis.
A kind of 3. nuclear power generating sets steamer torsional vibration monitoring device according to claim 1, it is characterised in that：The torsion
Turning vibration monitoring device is also included to show that the gear speed measuring device and the generator voltage current collecting device are surveyed
The display device of data, the display device are distinguished with the gear speed measuring device and the generator voltage current collecting device
Electrical connection.
A kind of 4. nuclear power generating sets steamer torsional vibration monitoring device according to claim 1, it is characterised in that：The tooth
Wheel speed measuring device includes speed probe and the first analog input card, the speed probe press close to the head measure speed gearses and with
Leave gap between the head measure speed gearses, first analog input card respectively with the speed probe and the monitoring mould
Block electrically connects.
A kind of 5. nuclear power generating sets steamer torsional vibration monitoring device according to claim 1, it is characterised in that：The hair
Electric moter voltage current collecting device includes secondary voltage transformer and secondary current transformer, the secondary voltage transformer difference
Electrically connected with the primary voltage transformer and the second analog input card, the secondary current transformer respectively with it is described once electric
Current transformer and the electrical connection of the 3rd analog input card, second analog input card and the 3rd analog input card respectively with the prison
Survey module electrical connection.
A kind of 6. nuclear power generating sets steamer torsional vibration monitoring device according to claim 1, it is characterised in that：The prison
Module is surveyed to electrically connect with alarm module.
A kind of 7. nuclear power generating sets steamer torsional vibration monitoring device according to claim 2, it is characterised in that：The prison
Module, the analyzing and diagnosing module, the communication module is surveyed to be located in rack.
A kind of 8. nuclear power generating sets steamer torsional vibration monitoring device according to claim 7, it is characterised in that：The machine
Cabinet is provided with to improve the conducting type door seal electricity bar of anti-Radio frequency interference ability.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720975103.9U CN206945128U (en) | 2017-08-07 | 2017-08-07 | A kind of nuclear power generating sets steamer torsional vibration monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720975103.9U CN206945128U (en) | 2017-08-07 | 2017-08-07 | A kind of nuclear power generating sets steamer torsional vibration monitoring device |
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| CN206945128U true CN206945128U (en) | 2018-01-30 |
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| CN201720975103.9U Active CN206945128U (en) | 2017-08-07 | 2017-08-07 | A kind of nuclear power generating sets steamer torsional vibration monitoring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110853785A (en) * | 2019-11-20 | 2020-02-28 | 苏州热工研究院有限公司 | Method for analyzing output capacity fault of nuclear power pressurized water reactor unit |
| CN114412587A (en) * | 2021-12-01 | 2022-04-29 | 上海发电设备成套设计研究院有限责任公司 | Multi-dimensional reliability monitoring method for nuclear turbine |
-
2017
- 2017-08-07 CN CN201720975103.9U patent/CN206945128U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110853785A (en) * | 2019-11-20 | 2020-02-28 | 苏州热工研究院有限公司 | Method for analyzing output capacity fault of nuclear power pressurized water reactor unit |
| CN114412587A (en) * | 2021-12-01 | 2022-04-29 | 上海发电设备成套设计研究院有限责任公司 | Multi-dimensional reliability monitoring method for nuclear turbine |
| CN114412587B (en) * | 2021-12-01 | 2022-11-08 | 上海发电设备成套设计研究院有限责任公司 | Multi-dimensional reliability monitoring method for nuclear turbine |
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