CN103791997A - System for monitoring vibration status during water turbine blade rotation - Google Patents
System for monitoring vibration status during water turbine blade rotation Download PDFInfo
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- CN103791997A CN103791997A CN201210432916.5A CN201210432916A CN103791997A CN 103791997 A CN103791997 A CN 103791997A CN 201210432916 A CN201210432916 A CN 201210432916A CN 103791997 A CN103791997 A CN 103791997A
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- turbine blade
- blade
- water turbine
- rotation
- protective cover
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Abstract
Disclosed is a system for monitoring vibration status during water turbine blade rotation. A protective cover is arranged outside a rotation blade; four light-sensing probes are arranged at equal intervals at positions, which are corresponding to the blade tip of the rotation blade, inside the protective cover; and light emitted by a laser emitter enters a corresponding light-sensing probe through an incident fiber and then enters a photoelectric receiver through an emitting fiber. By using the system provided by the invention, the vibration during the process of water turbine blade rotation can be stably and reliably obtained, the structure is simple, and the installation is convenient.
Description
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Technical field
The present invention relates to hydraulic turbine maintenance technology field, vibration state monitoring system when particularly a kind of turbine blade rotates.
Background technology
Along with social development, the mankind are more and more diversified to the demand of the energy, and wherein the utilization of HYDROELECTRIC ENERGY is even more important, and water power is renewable and clean energy resource completely, at present in widespread use of China.As hydroelectric visual plant, the hydraulic turbine is directly connected to generating efficiency, and a critical piece of the hydraulic turbine is exactly its blade, the blade of the hydraulic turbine is in rotation process, due to current skewness, the factors such as rotor portion imbalance, easily cause certain vibration situation, continue if these vibrations are long-term, can cause serious injury to blade and rotor, when serious, cause fracture, have influence on the normal work of the hydraulic turbine, therefore need the Vibration Condition under its blade rotation state to make monitoring, mainly by sensor installation on blade at present, consider parallel factor, need to be on each blade sensor installation, but for the blade that often needs High Rotation Speed, it is more difficult on it, implementing stable installation work.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, while the object of the present invention is to provide a kind of turbine blade rotation, vibration state monitoring system, has feature easy to use simple in structure.
To achieve these goals, the technical solution used in the present invention is:
Vibration state monitoring system when a kind of turbine blade rotation; outside rotating vane 6, there is protective cover 5; with respect to the position of rotating vane 6 blade tips, four photoinduction probes 4 are uniformly-spaced set in protective cover 5 inside; the light that generating laser 2 is launched enters corresponding photoinduction probe 4 through incident optical, then enters photelectric receiver 1 through outgoing optical fiber.
Compared with prior art, the present invention can reliablely and stablely obtain the Vibration Condition in turbine blade rotary course, simple in structure, easy for installation.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is carried out to more detailed explanation.
As shown in the figure; vibration state monitoring system when the present invention is a kind of turbine blade rotation; outside rotating vane 6, there is protective cover 5; with respect to the position of rotating vane 6 blade tips, four photoinduction probes 4 are uniformly-spaced set in protective cover 5 inside; the light that generating laser 2 is launched enters corresponding photoinduction probe 4 through incident optical; enter photelectric receiver 1 through outgoing optical fiber again, wherein photoinduction probe 4 is the modules that include lens 3.
Principle of the present invention is:
When hydraulic turbine work, rotating vane 6 Once you begin rotates, some rotating vanes 6 are popped one's head in and will be produced a pulse signal at 4 o'clock through some photoinduction, if there is vibration in some rotating vanes 6, its most advanced and sophisticated position produces certain skew at circumferencial direction, this skew can cause above-mentioned pulse signal in advance or delay to reach, according to the real-time rotate speed of rotating shaft, just can obtain Oscillation Amplitude and the frequency of this rotating vane 6, again according to the different distributions position of four photoinduction probes 4, can obtain the body vibration situation of this rotating vane 6 in a circumference.
Claims (1)
1. vibration state monitoring system when a turbine blade rotates; outside rotating vane (6), there is protective cover (5); it is characterized in that; with respect to the position of rotating vane (6) blade tip, four photoinduction probes (4) are uniformly-spaced set in protective cover (5) inside; the light of generating laser (2) transmitting enters corresponding photoinduction probe (4) through incident optical, then enters photelectric receiver (1) through outgoing optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210432916.5A CN103791997A (en) | 2012-11-03 | 2012-11-03 | System for monitoring vibration status during water turbine blade rotation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210432916.5A CN103791997A (en) | 2012-11-03 | 2012-11-03 | System for monitoring vibration status during water turbine blade rotation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103791997A true CN103791997A (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210432916.5A Pending CN103791997A (en) | 2012-11-03 | 2012-11-03 | System for monitoring vibration status during water turbine blade rotation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103791997A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952688A (en) * | 2016-06-06 | 2016-09-21 | 合肥通用机械研究院 | System for suppressing forced vibration of centrifugal impeller and control method for system |
| CN107429987A (en) * | 2016-02-01 | 2017-12-01 | 武汉数码刀医疗有限公司 | Multi-diaphragm collimator and its displacement detection system |
| CN108254063A (en) * | 2018-03-20 | 2018-07-06 | 南京凯奥思数据技术有限公司 | Track the vibration measurement device and method of rotating vane |
| CN109357748A (en) * | 2018-11-27 | 2019-02-19 | 吉林电力股份有限公司白城发电公司 | Turbine blade monitoring chatter device and device installation method and device monitoring method |
-
2012
- 2012-11-03 CN CN201210432916.5A patent/CN103791997A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429987A (en) * | 2016-02-01 | 2017-12-01 | 武汉数码刀医疗有限公司 | Multi-diaphragm collimator and its displacement detection system |
| CN105952688A (en) * | 2016-06-06 | 2016-09-21 | 合肥通用机械研究院 | System for suppressing forced vibration of centrifugal impeller and control method for system |
| CN105952688B (en) * | 2016-06-06 | 2019-04-09 | 合肥通用机械研究院有限公司 | A kind of centrifugal impeller forced vibration inhibits system and its control method |
| CN108254063A (en) * | 2018-03-20 | 2018-07-06 | 南京凯奥思数据技术有限公司 | Track the vibration measurement device and method of rotating vane |
| CN108254063B (en) * | 2018-03-20 | 2020-03-17 | 南京凯奥思数据技术有限公司 | Vibration measuring device and method for tracking rotating blade |
| CN109357748A (en) * | 2018-11-27 | 2019-02-19 | 吉林电力股份有限公司白城发电公司 | Turbine blade monitoring chatter device and device installation method and device monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140514 |