CN105840250A - Vibration protecting device and method of steam-turbine generator set - Google Patents
Vibration protecting device and method of steam-turbine generator set Download PDFInfo
- Publication number
- CN105840250A CN105840250A CN201610285598.2A CN201610285598A CN105840250A CN 105840250 A CN105840250 A CN 105840250A CN 201610285598 A CN201610285598 A CN 201610285598A CN 105840250 A CN105840250 A CN 105840250A
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- shakes
- vibration
- axle
- generator set
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/04—Antivibration arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Control Of Turbines (AREA)
Abstract
The invention relates to a vibration protecting device and a vibration protecting method of a steam-turbine generator set. Through two eddy-current sensors which are mounted on a bearing block of an intermediate pressure rotor in the steam-turbine generator set, are mutually at an angle of 90 degrees and are located in a direction X and a direction Y, the vibration value of the intermediate pressure rotor is measured, after the vibration of the intermediate pressure rotor is diagnosed to be caused by a friction fault, the comprehensive judgment can be carried out by a method for controlling the vibration of the intermediate pressure rotor according to a vibration condition and the current load of the generator set, when the vibration of the intermediate pressure rotor in the generator set in the direction X exceeds 150 microns, load reduction is carried out by the generator set, when the vibration of the intermediate pressure rotor in the direction X is less than 70 microns, load adjustment can be carried out by the generator set.
Description
Technical field
The present invention relates to a kind of Turbo-generator Set Vibration protection device and method.
Background technology
The diagnosis of slewing vibration fault and control be a theory and practice combine closely, with
Based on theory, to be practiced as approach, comprehensive work for the purpose of solving vibration problem.
In Thermal Power Station, slewing is numerous, and all kinds of blower fans, water pump, motor etc. rotate and set
Standby is the important component part in heat power generating system.The vibration fault of slewing has burst
The feature such as property, persistence, harm seriousness, and the solution of Diagnosis for Turbogenerator Sets and
Control is mostly important and urgent in the vibration of numerous slewing, rubbing of turbine LP rotors
Wiping vibration fault and present ascendant trend in recent years, effective vibration control method seems outstanding
For important, especially at the thermal power plant unit of cold district, as Turbo-generator Set is sent out during heat supply
Raw frictional vibration, and unit cannot be shut down during this period and be overhauled, and can only take operation aspect
Measure Vibration Condition is controlled by.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of easy to use, applicable
Root diameter scope is big, and convenient scene adjusts the Turbo-generator Set Vibration protection of rotor-position
Method.
Turbo-generator Set Vibration protection device of the present invention, including: Driven by Coaxial high pressure rotor,
Middle pressure rotor, low pressure rotor, generator amature, on the spring bearing of medium pressure rotor mutually
Vertical x to y to being provided with vibration measurement sensor, also include sensing with described vibration measurement
Signal processing apparatus that device connects and the steam turbine SIS system that described signal processing apparatus connects
System, described signal processing apparatus inputs after processing the vibration data of vibrating sensor collection
To steam turbine SIS system, acquisition is pressed rotor real-time vibration data.
Further, described vibration measurement sensor is eddy current sensor.
Further, described signal processing apparatus includes detecting described vibration measurement sensor
The frequency overlapped-resistable filter that vibration signal is filtered, described frequency overlapped-resistable filter be arranged on described in shake
Between dynamic measurement sensor and steam turbine SIS system.
Further, described signal processing apparatus also includes being connected to described vibration measurement sensing
Device and the A/D converter of steam turbine SIS system.
Further, described orthogonal x is to being built-in with y to vibration measurement sensor
, and be connected with vibration measurement instrument by respective preamplifier respectively.
Further, described orthogonal x is to being external with y to vibration measurement sensor
, and be directly connected with external vibration measurement instrument respectively.
Turbo-generator Set Vibration guard method of the present invention, including
In acquisition, pressure rotor holds that X shakes to axle, Y-direction axle shakes, and centering pressure rotor oscillation is carried out
Monitoring in real time；
Contrast X shakes to axle and Y-direction axle shakes size,
If X shakes to axle and shakes more than Y-direction axle, then judge that whether X shakes more than first threshold to axle,
If X shakes more than X to first threshold to axle, then Turbo-generator Set carries out load shedding behaviour
Make, reach in predetermined threshold range so that X shakes to axle；
If X shakes less than X to Second Threshold to axle, then steam turbine generator carries out load adjustment,
Reach in predetermined threshold range so that X shakes to axle；
If X shakes to axle and shakes less than Y-direction axle, then output X reports to the police to sensor fault, it is judged that
Whether Y-direction axle shakes more than Y-direction first threshold,
If Y-direction axle shakes more than Y-direction first threshold, then Turbo-generator Set carries out load shedding behaviour
Make, so that Y-direction axle shakes and reaches in predetermined threshold range；
If Y-direction axle shakes less than Y-direction Second Threshold, then steam turbine generator carries out load adjustment,
So that Y-direction axle shakes and reaches in predetermined threshold range.
Further, described X to first threshold, X to Second Threshold, Y-direction the first threshold
Value, Y-direction Second Threshold are empirical value.
Further, described X is that 150 μm, X are to Second Threshold to first threshold
70μm。
By such scheme, invention Turbo-generator Set Vibration protection device and method
At least have the advantage that
1, rotor is pressed to there is the premise of frictional vibration in judging 200MW Turbo-generator Set
Under, by two the mutual eddy current sensors in 90 ° installed at the middle pressure rotor place of holding and letter
Number processing means centering pressure rotor carries out real-time vibration acquisition.
2, the vibration data of Real-time Collection delivers to SIS system, in conjunction with in press rotor original state
And unit load carries out load leveling operation.
3, when the vibration of central pressure rotor X-direction reaches 150 μm, unit performs load down behaviour
Making, when 70 μm is down in the vibration of central pressure rotor X-direction, unit can carry out load adjustment.
Described above is only the general introduction of technical solution of the present invention, in order to better understand this
Bright technological means, and can be practiced according to the content of description, below with the present invention relatively
Good embodiment and coordinate accompanying drawing describe in detail as after.
Accompanying drawing explanation
Fig. 1 is Turbo-generator Set Vibration protection device structural representation of the present invention；
Fig. 2 is A-A sectional view.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the present invention is made the most in detail
Describe.Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
Embodiment 1
If Fig. 1 is to shown in 2, the present embodiment Turbo-generator Set Vibration protection device, bag
Include: the high pressure rotor 1 of Driven by Coaxial, middle pressure rotor 2, low pressure rotor 3, electromotor turn
Son 4, the spring bearing of medium pressure rotor is mutually perpendicular to x to y to being provided with vibration
Measuring sensor, described vibration measurement sensor is eddy current sensor.
Also include the signal processing apparatus that is connected with described vibration measurement sensor and described letter
The steam turbine SIS system that number processing means connects, described signal processing apparatus is to vibrating sensor
The vibration data gathered inputs to steam turbine SIS system after processing, and presses rotor real in acquisition
Time vibration data.
In the present embodiment, described signal processing apparatus includes described vibration measurement sensor
The frequency overlapped-resistable filter that is filtered of vibration signal of detection and converting analog signals into
The A/D converter of digital signal, described frequency overlapped-resistable filter, A/D converter are arranged on
Between described vibration measurement sensor and steam turbine SIS system.
In the present embodiment, further, described orthogonal x to y to vibration
It is external for measuring sensor, and is directly connected with external steam turbine SIS system respectively.
In actual applications, can also be described orthogonal x to the present embodiment to
Y is built-in to vibration measurement sensor, and respectively by respective preamplifier with
Steam turbine SIS system connects.
In the present embodiment, on the premise of pressing rotor to there is frictional vibration fault in judging unit,
The most in 90 ° two eddy current sensor and the fore-lying device at place is held by being arranged on middle pressure rotor,
Centering pressure rotor carries out real time on-line monitoring, turns in combination with pressure in 200MW Turbo-generator Set
The load that sub-initial condition is current with unit, carries out structure adjusting.Central pressure rotor X-direction is rubbed
When wiping vibration values reaches 150 μm, unit performs load shedding operation, when pressing rotor X in unit
After direction vibration drops to 70 μm, unit can be adjusted load, to reach vibration controlled
In the range of.
Embodiment 2
The present embodiment Turbo-generator Set Vibration guard method, utilizes the steamer of above-described embodiment 1
Generator set vibration protection device, method specifically includes: in acquisition, pressure rotor holds X to axle
Shake, Y-direction axle shakes, and centering pressure rotor oscillation is monitored in real time；
Contrast X shakes to axle and Y-direction axle shakes size,
If X shakes to axle and shakes more than Y-direction axle, then judge that whether X shakes more than first threshold to axle,
If X shakes more than X to first threshold to axle, then Turbo-generator Set carries out load shedding operation,
Reach in predetermined threshold range so that X shakes to axle；
If X shakes less than X to Second Threshold to axle, then steam turbine generator carries out load adjustment, with
Make X shake to axle to reach in predetermined threshold range；
If X shakes to axle and shakes less than Y-direction axle, then output X reports to the police to sensor fault, it is judged that Y
Whether shake more than Y-direction first threshold to axle,
If Y-direction axle shakes more than Y-direction first threshold, then Turbo-generator Set carries out load shedding operation,
So that Y-direction axle shakes and reaches in predetermined threshold range；
If Y-direction axle shakes less than Y-direction Second Threshold, then steam turbine generator carries out load adjustment, with
Make Y-direction axle shake to reach in predetermined threshold range.
In the present embodiment, described X is that 150 μm, X are to Second Threshold to first threshold
70μm。
In practical situations both, described X to first threshold, X to Second Threshold, Y-direction first
Threshold value, Y-direction Second Threshold are empirical value.
In the various embodiments described above, being provided with reference marker on rotor, reference marker is corresponding to rotor
The phase demodulation sensor of position is corresponding, and phase demodulation sensor is connected with steam turbine SIS system.Described
Phase demodulation sensor is current vortex sensor or photoelectric sensor；The reference marker of described correspondence is recessed
Groove or cursor.Phase information has physical meaning and the directivity of distinctness, and phase place (poor) becomes
Change and clearly can be divided according to concrete frame for movement or physical media again, therefore, phase difference
Analysis can be as " visualization " instrument of turbine rotator breakdown diagnosis；Can be fast by dissecting phase contrast
Whether phase interference is there is, it is thus possible to determine vibration event more quickly and accurately between quick checking clear signal
The character of barrier, takes correct measure be controlled vibration fault and/or process in time,
It is prevented effectively from operation operation and the failure propagation of mistake, is substantially reduced troubleshooting cost；Pass through
The analysis of phase contrast variation tendency also can make vibration equipment fault pre-alarming accurately, such as, if
Find that phase contrast exists obvious variation tendency, even if now vibration amplitude is still the most abnormal,
Also should search reason in time, take suitable treatment measures, not wait until that amplitude increases suddenly and draw
Play device damage or disorderly closedown, thus effectively take precautions against the generation of pernicious equipment breakdown.
The above is only the preferred embodiment of the present invention, is not limited to the present invention, should
When pointing out, for those skilled in the art, without departing from the technology of the present invention
On the premise of principle, it is also possible to make some improvement and modification, these improve and modification also should regard
For protection scope of the present invention.
Claims (9)
1. a Turbo-generator Set Vibration protection device, it is characterised in that including: with
Shaft-driven high pressure rotor, middle pressure rotor, low pressure rotor, generator amature, described in
Pressure rotor spring bearing on be mutually perpendicular to x to y to being provided with vibration measurement sensor,
Also include the signal processing apparatus that is connected with described vibration measurement sensor and described signal
The steam turbine SIS system that processing means connects, described signal processing apparatus is to vibrating sensing
The vibration data of device collection inputs after processing to steam turbine SIS system, presses in acquisition
Rotor real-time vibration data.
Turbo-generator Set Vibration protection device the most according to claim 1, it is special
Levying and be, described vibration measurement sensor is eddy current sensor.
Turbo-generator Set Vibration protection device the most according to claim 1, it is special
Levying and be, described signal processing apparatus includes shaking that described vibration measurement sensor detects
The frequency overlapped-resistable filter that dynamic signal is filtered, described frequency overlapped-resistable filter is arranged on described
Between vibration measurement sensor and steam turbine SIS system.
Turbo-generator Set Vibration protection device the most according to claim 3, it is special
Levying and be, described signal processing apparatus also includes being connected to described vibration measurement sensor
A/D converter with steam turbine SIS system.
Turbo-generator Set Vibration protection device the most according to claim 1, it is special
Levy and be, described orthogonal x to being built-in with y to vibration measurement sensor,
And be connected with steam turbine SIS system by respective preamplifier respectively.
Turbo-generator Set Vibration protection device the most according to claim 1, it is special
Levy and be, described orthogonal x to being external with y to vibration measurement sensor,
And be directly connected with external steam turbine SIS system respectively.
7. a Turbo-generator Set Vibration guard method, it is characterised in that include
In acquisition, pressure rotor holds that X shakes to axle, Y-direction axle shakes, and centering pressure rotor oscillation is entered
Row monitoring in real time；
Contrast X shakes to axle and Y-direction axle shakes size,
If X shakes to axle and shakes more than Y-direction axle, then judge that whether X shakes more than the first threshold to axle
Value,
If X shakes more than X to first threshold to axle, then Turbo-generator Set carries out load shedding
Operation, reaches in predetermined threshold range so that X shakes to axle；
If X shakes less than X to Second Threshold to axle, then steam turbine generator carries out load adjustment,
Reach in predetermined threshold range so that X shakes to axle；
If X shakes to axle and shakes less than Y-direction axle, then output X reports to the police to sensor fault, sentences
Whether disconnected Y-direction axle shakes more than Y-direction first threshold,
If Y-direction axle shakes more than Y-direction first threshold, then Turbo-generator Set carries out load shedding
Operation, so that Y-direction axle shakes and reaches in predetermined threshold range；
If Y-direction axle shakes less than Y-direction Second Threshold, then steam turbine generator carries out load adjustment,
So that Y-direction axle shakes and reaches in predetermined threshold range.
Turbo-generator Set Vibration guard method the most according to claim 7, it is special
Levy and be, described X to first threshold, X to Second Threshold, Y-direction first threshold, Y
It is empirical value to Second Threshold.
Turbo-generator Set Vibration guard method the most according to claim 7, it is special
Levy and be, described X to first threshold be 150 μm, X be 70 μm to Second Threshold.
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| CN201610285598.2A CN105840250B (en) | 2016-05-03 | 2016-05-03 | Turbo-generator Set Vibration protection device and method |
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| CN201610285598.2A CN105840250B (en) | 2016-05-03 | 2016-05-03 | Turbo-generator Set Vibration protection device and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106285799A (en) * | 2016-08-23 | 2017-01-04 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of rotor oscillation guard method decomposed based on harmonic component |
| CN106979036A (en) * | 2017-04-17 | 2017-07-25 | 大唐东北电力试验研究所有限公司 | Thermal power plant unit block distortion and unit vibration numerical value monitoring method and system |
| CN109612722A (en) * | 2018-12-12 | 2019-04-12 | 北京振测智控科技有限公司 | A kind of bearing of turbo generator set misaligns the diagnosis and method of adjustment of failure |
| CN111852577A (en) * | 2020-07-07 | 2020-10-30 | 大唐巩义发电有限责任公司 | Air pump vibration protection device and protection method thereof |
| CN114252145A (en) * | 2020-09-25 | 2022-03-29 | 上海电气电站设备有限公司 | Axial vibration on-line testing system and method for steam turbine generator unit |
| CN111852577B (en) * | 2020-07-07 | 2024-05-14 | 大唐巩义发电有限责任公司 | Pump vibration protection device and protection method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106285799A (en) * | 2016-08-23 | 2017-01-04 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of rotor oscillation guard method decomposed based on harmonic component |
| CN106979036A (en) * | 2017-04-17 | 2017-07-25 | 大唐东北电力试验研究所有限公司 | Thermal power plant unit block distortion and unit vibration numerical value monitoring method and system |
| CN106979036B (en) * | 2017-04-17 | 2019-03-29 | 大唐东北电力试验研究院有限公司 | Thermal power plant unit block distortion and unit vibration numerical value monitoring method and system |
| CN109612722A (en) * | 2018-12-12 | 2019-04-12 | 北京振测智控科技有限公司 | A kind of bearing of turbo generator set misaligns the diagnosis and method of adjustment of failure |
| CN111852577A (en) * | 2020-07-07 | 2020-10-30 | 大唐巩义发电有限责任公司 | Air pump vibration protection device and protection method thereof |
| CN111852577B (en) * | 2020-07-07 | 2024-05-14 | 大唐巩义发电有限责任公司 | Pump vibration protection device and protection method thereof |
| CN114252145A (en) * | 2020-09-25 | 2022-03-29 | 上海电气电站设备有限公司 | Axial vibration on-line testing system and method for steam turbine generator unit |
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| CN105840250B (en) | 2017-11-03 |
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Address after: No. 3195, Jilin high tech Zone Wei Shan Road, Changchun, Jilin Patentee after: Datang northeast electric power test and Research Institute Co., Ltd. Address before: No. 3195, Jilin high tech Zone Wei Shan Road, Changchun, Jilin Patentee before: DATANG NORTHEAST ELECTRIC POWER TEST RESEARCH INSTITUTE CO., LTD. |
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