CN1029424C - Monitoring device for centring state of rotary machine - Google Patents
Monitoring device for centring state of rotary machine Download PDFInfo
- Publication number
- CN1029424C CN1029424C CN 92114130 CN92114130A CN1029424C CN 1029424 C CN1029424 C CN 1029424C CN 92114130 CN92114130 CN 92114130 CN 92114130 A CN92114130 A CN 92114130A CN 1029424 C CN1029424 C CN 1029424C
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- CN
- China
- Prior art keywords
- centring
- rod
- machines
- measuring
- rotary machine
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- Expired - Fee Related
Links
- 238000012806 monitoring device Methods 0.000 title abstract description 3
- 238000012544 monitoring process Methods 0.000 claims description 7
- 239000011888 foil Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002277 temperature effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The present invention relates to a centring state monitoring device for rotary machinery, which belongs to a centring measuring device. The present invention is a single rod measuring device which is formed on the basis of stress-strain principles; by using a strain gauge type transducer installed on a measuring rod which is connected with two machines, measuring rod deformation signals during eccentricity are displayed through a microcomputer; thus, generated parallel shift or angle offset between shafts of both of the two machines is obtained. The present invention can monitor centring states of the rotary machine at any time, and has the advantages of low cost, high measuring precision and wide application range.
Description
The invention belongs to the centering measurement mechanism, be applicable to the situation of change that monitors centering state in the machine running process.
In the rotary machine of operation at present; produce some vibration faults through regular meeting; the main cause that these faults produce is: 1) rotor unbalance, 2) rotor misalignment, 3) bearing problem; in these three kinds of faults; misalign fault and accounted for significant proportion, will cause catastrophic consequence, cause the tremendous economic loss and excessive centering is overproof in the operational process; so, in actual production, exist dynamic centering and monitor problem.
Disclosing the measurement of DODD rod survey method for United States Patent (USP) NO.3783522 number dynamically misaligns, it is to be fastened on the shaft centre line that measurement rod on the shaft coupling side two machine end faces is represented two machines with two respectively with cantilevered fashion, level and vertical around rod therein, 4 eddy current probe sensors have been arranged respectively, by the variation of eddy current probe according to two rod gap lengths, measure the variation of static relative axle with two machines under dynamic situation center, the variation that is converted into degree of misaligning shows at display.There is following weak point in this mensuration: 1) eddy current probe price height, the ambient temperature effect when being subjected to machine run is big, so also must join a cover cooling system, 2 when using) to measure excellent rigidity little for cantilevered, and self-deformation will directly have influence on measuring accuracy.
Another kind of at the laser alignment instrument that adopts, though the precision height, it costs an arm and a leg, and needs again to be installed on the axle, especially to on-line monitoring, can't load onto sometimes, thereby its application has been subjected to limitation at all.
Purpose of the present invention aims to provide a kind of precision height, and cost is low, rotary machine centering state monitoring apparatus applied widely.
Centering state monitoring apparatus of the present invention is based on the excellent measurement mechanism of list that the ess-strain principle design forms, and this device comprises one and measures rod, strain gauge transducer, transducer and microcomputer.Measure excellent level for one and be positioned at shaft coupling side, its two ends are fixed with two machine end faces respectively, in the both sides of the mid point of rod strain gauge transducer have been installed respectively, and this sensor links to each other with microcomputer through transducer.Like this when between two machine shafts parallel offset or angular deflection taking place, the measurement rod will be deformed, at the sensor of measuring on the rod deformation signal that obtains is defeated by microcomputer by transducer by device, after microcomputer is made software processes, can demonstrates the level of two machines and the opposing parallel of vertical direction and misalign and the angle amount of misaligning.
Describing invention in detail below in conjunction with accompanying drawing constitutes.
Fig. 1 is centering monitoring arrangement of the present invention and instrumentation plan thereof.
1,2 represent two rotary machines respectively among the figure, the 3rd, and shaft coupling, the 4th, measure rod, the 5th, strain gauge transducer, the 6th, transducer, the 7th, microcomputer.
With reference to Fig. 1, measure excellent 4 levels and be positioned at shaft coupling 3 sides, its two ends respectively with machine 1,2 bearing seat or housing are fixed, installed respectively at A, the B place of measuring excellent mid point both sides a strain gauge transducer 5,5 ', here, strain gauge transducer is made up of two foil gauges that the edge circumferentially is affixed on level and the vertical (x, y direction), so that the strain value on measurement of x, the y direction, the foil gauge at A, B place is all received in the microcomputer 7 through transducer 6.When rotary machine occurs misaligning in operational process and causes that when measuring the rod distortion, foil gauge is imported microcomputer with the deformation signal that obtains after transducer becomes electric weight to dependent variable, can calculate the amount of misaligning of x, y direction by software processes.
This device can monitor the centering state of rotary machine at any time, but both static measurements, but also on-line measurement, because strain gauge transducer is than eddy current probe sensor and laser alignment instrument considerably cheaper, also need not a cover cooling system, thereby greatly reduced the cost of centering monitoring arrangement, in addition, strain gauge transducer is not subjected to the on-stream temperature effect that comes out of machine, this the device again with the microcomputer coupling, so the centering situation of change in energy correct response and the recorder running, its precision height, applied widely.
Claims (2)
1, rotary machine centering monitoring arrangement, contain and measure rod, sensor and the device that sensor signal is processed and displayed, it is characterized in that one is measured rod [4] horizontal device at two machines [1,2] connecting place, its two ends are fixed with the end face of two machines respectively, [5,5 "], sensor links to each other with microcomputer [7] through transducer [6] in the both sides of measuring excellent mid point strain gauge transducer to be installed respectively.
2,, it is characterized in that two strain gauge transducers [5,5 '] are by forming along measuring excellent two foil gauges that circumferentially are affixed on level and vertical by the described centering monitoring arrangement of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114130 CN1029424C (en) | 1992-11-29 | 1992-11-29 | Monitoring device for centring state of rotary machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114130 CN1029424C (en) | 1992-11-29 | 1992-11-29 | Monitoring device for centring state of rotary machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1075544A CN1075544A (en) | 1993-08-25 |
| CN1029424C true CN1029424C (en) | 1995-08-02 |
Family
ID=4946805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92114130 Expired - Fee Related CN1029424C (en) | 1992-11-29 | 1992-11-29 | Monitoring device for centring state of rotary machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1029424C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048595A (en) * | 2014-06-27 | 2014-09-17 | 西安交通大学 | Angle misalignment fault quantitative detection system and method for rotating machine |
| CN105403131B (en) * | 2015-12-11 | 2017-11-17 | 东方电气集团东方汽轮机有限公司 | One kind rotates the class mechanically through-flow separately alignment method of lower half |
| CN106501356B (en) * | 2016-12-29 | 2019-08-13 | 核动力运行研究所 | A kind of interior crossing type eddy current probe is to neutral method of calibration |
| CN108917659B (en) * | 2018-07-06 | 2020-05-29 | 鞍钢股份有限公司 | Method for realizing rapid centering and alignment of coupler by adopting laser demarcation device |
| CN109268214B (en) * | 2018-10-29 | 2020-04-17 | 国电联合动力技术有限公司 | Intelligent monitoring method for centering state of wind driven generator coupler |
| CN111121606A (en) * | 2019-11-21 | 2020-05-08 | 南京工诺科技有限公司 | Deviation tester for mounting coupler |
| CN111238437A (en) * | 2020-03-10 | 2020-06-05 | 中烜航空科技(上海)有限公司 | Automatic assembly tracking and monitoring equipment for large-scale hole shaft |
-
1992
- 1992-11-29 CN CN 92114130 patent/CN1029424C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1075544A (en) | 1993-08-25 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |