CN104019889A - Power system rotating mechanical shaft vibration measurement method - Google Patents
Power system rotating mechanical shaft vibration measurement method Download PDFInfo
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- CN104019889A CN104019889A CN201410228965.6A CN201410228965A CN104019889A CN 104019889 A CN104019889 A CN 104019889A CN 201410228965 A CN201410228965 A CN 201410228965A CN 104019889 A CN104019889 A CN 104019889A
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- bearing
- shaft
- rotating shaft
- measurement method
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- 238000000691 measurement method Methods 0.000 title claims abstract description 12
- 238000005259 measurement Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 12
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 238000003745 diagnosis Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000013480 data collection Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The invention relates to a power system rotating mechanical shaft vibration measurement method. The method comprises steps: (1) the position of a to-be-measured shaft neck is determined, and a proper shaft neck exposure position is picked out from two sides of a bearing according to the environment and the position of the measured bearing; (2) mounting of a sensor bracket is carried out; (3) the distance of sensors is adjusted; (4) reading is recorded; and (5) an instrument is removed. A new method of mounting a shaft vibration sensor outside the bearing is used, mounting and removal of the sensor are quicker and more convenient, the gap distance between the sensor and the shaft neck is precisely adjusted, miniature of an acquisition system can be realized, quick mounting, quick reading and quick removal can be realized, and a key role can be played on operation recording and vibration fault diagnosis carried out on auxiliary machines such as a small steam turbine unit and a water pump and a fan which are not provided with a shaft vibration monitoring system.
Description
Technical field
The invention belongs to electric system rotary machine vibration measurement technique field, especially a kind of electric system rotating machinery shaft off-line measurement method of shaking.
Background technology
The axle of the electric system rotating machinery value of shaking refers to that rotating shaft is with respect to the Oscillation Amplitude of bearing seat, be the important parameter of description equipment safety in operation, during to the safety monitoring in equipment day-to-day operation and generation vibration fault, carrying out fault diagnosis improvement has very important directive significance.But for the axle method of measuring of shaking, be to have very strict requirement, sensor probe need to be aimed at and apart from 1mm left and right, rotating shaft surface, if therefore that is installed on the equipment of operation, will be very difficult and dangerous; Simultaneously the axle eddy current sensor that shakes also requires surrounding environment can have higher cleanliness and lower electromagnetic interference (EMI).So the measurement of at present electric system axle being shaken is all sensor to be inserted in the preformed hole of FE Tiler on bearing to install when compressor emergency shutdown; by cable, the signal is far passed is carried out to remote online monitoring to data acquisition system (DAS) again; if the very high sensor of extracting of oil pressure in service, has sensor to break down can only to wait until that compressor emergency shutdown gets off just can change, once will have a large amount of lubricating oil ejections and cause the accident in operating bearing.In addition on-line monitoring equipment and technology complexity is with high costs, some old type machine groups do not design the axle measuring system of shaking at all, even and some new equipments as blower fan water pump etc. because the factors such as financial cost are also failed the installation shaft test macro that shakes, only rely on the relatively easy watt vibration sensor of installation and maintenance to monitor the vibrational state of unit.But compare the shake vibration state of consersion unit that can be sensitiveer of the axle that watt shakes, the vibration fault that shows unit that also can be more early.Therefore if can invent a set of simple and easy to do off-line type axle measuring method of shaking, will all can play very favourable help to the safety monitoring of unit and fault treatment, in industry, also there is no at present the ripe axle off-line measurement method of shaking.
Summary of the invention
The object of the invention is in order to overcome the deficiencies in the prior art, a kind of electric system rotating machinery shaft off-line measurement method of shaking is provided.
The present invention solves its technical matters and takes following technical scheme to realize:
The electric system rotating machinery shaft off-line measurement method of shaking, comprises that step is as follows:
(1) determine the position of axle journal to be measured: according to environment and the position that will measure bearing, in bearing both sides, select an exposed axle journal position being applicable to;
(2) carry out the installation of sensor stand:
1. on bearing, on FE Tiler, select smooth local fixed support;
2. adjusting pole makes the smooth place of perpendicular alignmnet rotating shaft smooth surface, sensor top;
(3) adjust sensor distance: start signal is processed and display device, while observe gap voltage value, by the mode as far as near, makes sensor near rotating shaft,
1. when gap voltage >-20V, use the fast mode of gear adjustable range of adjusting to make sensor near rotating shaft;
2. when gap voltage≤-20V, use the mode of fine setting gear to make sensor near rotating shaft;
(4) read-record: make reach-8V of gap voltage measure requirement to meeting between-12V when adjusting distance, the vibration amplitude that record shows is as measurement result;
(5) instrument removal: use successively fine setting gear and adjust soon gear to make sensor take away respectively again support and close display device away from rotating shaft to safe distance.
And exposed axle journal position is specially carbon brush place axial location in described step (1).
And, in described step (2) 1. on bearing on FE Tiler support bracket fastened concrete grammar for be fixedly mounted with magnet on the base of support, by magnet, support is adsorbed on bearing on FE Tiler.
Advantage of the present invention and good effect are:
The present invention designs a kind of brand-new rotating machinery shaft measuring method of shaking, and has used the new method of the outer installation shaft vibration sensor of bearing, and the installing/dismounting that makes sensor is rapid and convenient more; Designed sensor adjustment device, made the adjustment of sensor and axle journal clearance distance more accurate; Leading sensor device, gap voltage measurement module, power supply, vibrating data collection module, display are integrated together, have realized the miniaturization of acquisition system; The method of carrying out remote online monitoring than the sensor installation in bearing generally adopting at present, the present invention is more flexible, and cost is cheaper, can realize the advantage of Fast Installation, Rapid reading, quick-detachment.For design and installation axle not, shaking, the subsidiary engines such as the Miniature steamer unit of monitoring system and water pump fan carry out logout, vibrating failure diagnosis can play very crucial effect.
Accompanying drawing explanation
Fig. 1 is the mounting structure schematic diagram of hardware that the inventive method is used;
Fig. 2 is that signal is processed and display device modular structure figure.
Embodiment
Below in conjunction with accompanying drawing, the invention process is further described, following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of electric system rotating machinery shaft off-line measurement method of shaking, as shown in Figure 1, the hardware device that the method is used comprises, be fixed on sensor stand 1 on bearing seat, be arranged on support right-hand end near the sensor 4 of rotating shaft, the DOL Data Output Line of described sensor is processed and is connected with display device with signal
Wherein, described support sensor packet lateral adjustments bar 3, upper and lower surface at transducer transversely adjuster bar is shaped with respectively the upper dedendum flank connecting with fast tune gear 2 teeth and fine setting gear 5 teeth, because fast diameter and the tooth pitch of gear and fine setting gear adjusted is different, so the speed regulating is different, by rotating fast tune gear or fine setting gear, both can realize fast or slow the horizontally slipping of sensor adjustment bar
Containing the position adjustments up and down that can realize sensor,
Wherein, as shown in Figure 2, signal is processed with display device and is included leading sensor device, power supply, gap voltage measurement module, vibrating data collection module and display screen.Power supply Fen Si road powers to leading sensor device, gap voltage measurement module, vibrating data collection module and display screen respectively.Wherein fore-lying device is powered to sensor by data line again, and sensor is transmitted back to fore-lying device by measuring-signal.Fore-lying device reaches gap voltage measurement module and vibrating data collection module by pretreated signal, and gap voltage measurement module and vibrating data collection module export gap voltage value and vibration amplitude to display screen respectively.During instrument work, display shows vibration amplitude and gap voltage value simultaneously.
Method step of the present invention is
(1) determine the position of axle journal to be measured: according to environment and the position that will measure bearing, in bearing both sides, select an exposed axle journal position being applicable to, select surperficial smooth place as far as possible, because the journal surface of this position of effect of carbon brush friction is very smooth, be applicable to carrying out the axle measurement of shaking, so specifically select carbon brush place axial location;
(2) carry out the installation of sensor stand:
1. on bearing, on FE Tiler, select smooth local fixed support, concrete fixing means is for be fixedly mounted with magnet on the base of support, by magnet, support is adsorbed on bearing on FE Tiler;
2. adjusting pole makes the smooth place of perpendicular alignmnet rotating shaft smooth surface, sensor top;
Whole operating process should make equipment and personnel's limbs and rotating shaft keep enough distance to guarantee safety;
(3) adjust sensor distance: start signal is processed and display device, while observe gap voltage value, by the mode as far as near, makes sensor near rotating shaft,
1. when gap voltage >-20V, use the fast mode of gear adjustable range of adjusting to make sensor near rotating shaft,
2. when gap voltage≤-20V, use the mode of fine setting gear to make sensor near rotating shaft;
(4) read-record: make reach-8V of gap voltage meet and measure requirement between-12V when adjusting distance, can record the vibration amplitude of demonstration as measurement result.
(5) instrument removal: use successively fine setting gear and adjust soon gear to make sensor take away respectively again support and close display device away from rotating shaft to safe distance.
Claims (3)
1. the electric system rotating machinery shaft off-line measurement method of shaking, is characterized in that comprising that step is as follows:
(1) determine the position of axle journal to be measured: according to environment and the position that will measure bearing, in bearing both sides, select an exposed axle journal position being applicable to;
(2) carry out the installation of sensor stand:
1. on bearing, on FE Tiler, select smooth local fixed support;
2. adjusting pole makes the smooth place of perpendicular alignmnet rotating shaft smooth surface, sensor top;
(3) adjust sensor distance: start signal is processed and display device, while observe gap voltage value, by the mode as far as near, makes sensor near rotating shaft,
1. when gap voltage >-20V, use the fast mode of gear adjustable range of adjusting to make sensor near rotating shaft;
2. when gap voltage≤-20V, use the mode of fine setting gear to make sensor near rotating shaft;
(4) read-record: make reach-8V of gap voltage measure requirement to meeting between-12V when adjusting distance, the vibration amplitude that record shows is as measurement result;
(5) instrument removal: use successively fine setting gear and adjust soon gear to make sensor take away respectively again support and close display device away from rotating shaft to safe distance.
2. the electric system rotating machinery shaft according to claim 1 off-line measurement method of shaking, is characterized in that: in described step (1), exposed axle journal position is specially carbon brush place axial location.
3. the electric system rotating machinery shaft according to claim 1 off-line measurement method of shaking, it is characterized in that: in described step (2) 1. on bearing on FE Tiler support bracket fastened concrete grammar for be fixedly mounted with magnet on the base of support, by magnet, support is adsorbed on bearing on FE Tiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228965.6A CN104019889B (en) | 2014-05-28 | 2014-05-28 | Power system rotating mechanical shaft vibration measurement method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410228965.6A CN104019889B (en) | 2014-05-28 | 2014-05-28 | Power system rotating mechanical shaft vibration measurement method |
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| Publication Number | Publication Date |
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| CN104019889A true CN104019889A (en) | 2014-09-03 |
| CN104019889B CN104019889B (en) | 2017-02-15 |
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| CN201410228965.6A Active CN104019889B (en) | 2014-05-28 | 2014-05-28 | Power system rotating mechanical shaft vibration measurement method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930934A (en) * | 2017-03-15 | 2017-07-07 | 中国石油化工股份有限公司 | The defeated failure of pump diagnostic method of one kind master and system |
| CN108414080A (en) * | 2018-06-11 | 2018-08-17 | 河北冀研能源科学技术研究院有限公司 | Device for on-line measurement rotor of turbogenerator set diameter of axle absolute vibration |
| CN113530741A (en) * | 2021-06-07 | 2021-10-22 | 中国长江电力股份有限公司 | Device and method for online adjustment and replacement of swing sensor of hydraulic turbine unit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8802002A (en) * | 1988-08-11 | 1990-03-01 | Skf Ind Trading & Dev | METHOD AND DEVICE FOR DETECTING DEFECTS IN MOVING PARTS WITH A CENTRAL ROTATING AXLE |
| CN201413190Y (en) * | 2009-05-18 | 2010-02-24 | 北京派利斯科技有限公司 | Vibration monitoring module |
| CN102052963A (en) * | 2010-11-16 | 2011-05-11 | 郑州大学 | Data acquisition device for vector spectrum analysis on vibration signals |
| CN202547771U (en) * | 2012-05-15 | 2012-11-21 | 赵军 | Calibrator for vibration transducer |
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2014
- 2014-05-28 CN CN201410228965.6A patent/CN104019889B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930934A (en) * | 2017-03-15 | 2017-07-07 | 中国石油化工股份有限公司 | The defeated failure of pump diagnostic method of one kind master and system |
| CN108414080A (en) * | 2018-06-11 | 2018-08-17 | 河北冀研能源科学技术研究院有限公司 | Device for on-line measurement rotor of turbogenerator set diameter of axle absolute vibration |
| CN113530741A (en) * | 2021-06-07 | 2021-10-22 | 中国长江电力股份有限公司 | Device and method for online adjustment and replacement of swing sensor of hydraulic turbine unit |
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| CN104019889B (en) | 2017-02-15 |
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Address after: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant after: State Grid Corporation of China Applicant after: State Grid Tianjin Electric Power Company Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Grid Corporation of China Applicant before: State Grid Tianjin Electric Power Company |
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