CN201285276Y - On-line detection apparatus for rotating vane vibration - Google Patents
On-line detection apparatus for rotating vane vibration Download PDFInfo
- Publication number
- CN201285276Y CN201285276Y CNU2008202027386U CN200820202738U CN201285276Y CN 201285276 Y CN201285276 Y CN 201285276Y CN U2008202027386 U CNU2008202027386 U CN U2008202027386U CN 200820202738 U CN200820202738 U CN 200820202738U CN 201285276 Y CN201285276 Y CN 201285276Y
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- China
- Prior art keywords
- circuit board
- turning axle
- rotating shaft
- measuring device
- line measuring
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Abstract
The utility model discloses a device for detecting the online vibration of rotating blades. An electric motor is mounted on a base, and a rotating shaft supported by a pair of bearing seats is also mounted on the base; a belt wheel is mounted at one end of the rotating shaft, and an impeller is mounted at the other end of the rotating shaft and is provided with blades; a fly wheel of the electric motor drives the rotating shaft to rotate by a belt, and resistor strain foils are respectively stuck to the blades and sense the deformation or the vibration of the blades; leads connected with the resistor strain foils penetrate through a right center hole and a right lead hole and are connected with a circuit board so that signals are amplified by the circuit board; and a lead led out of the circuit board penetrates through a left lead hole and a left center hole and is connected with a light-emitting diode at a transmitting terminal to convert electric signals into optical signals which are transmitted to a receiver of a receiving terminal mounted outside the rotating shaft. The rotating shaft continuously rotates to realize the online obtainment of mechanical states of the blades.
Description
Technical field
The utility model relates to a kind of on-line measuring device of rotating vane vibration.
Background technology
Blade is the vital part of high speed turbine, and under the high speed rotating running status, the stress deformation of blade can influence the work of turbine, can cause operation troubles when serious.Therefore, monitor very important in real time to the duty of high speed blade.The conventional method that detects blade vibration or distortion has two classes: directly measure and measure indirectly.Directly measuring is to paste foil gauge on blade, obtains strain signal.But on the impeller of high speed rotating, it is difficult that signal is outputed to testing circuit.Measure indirectly laser illumination to blade, detect the reflected light of blade.This method will go out the foliated lamellar attitude by the complicated algorithm indirect calculation, and the result is inaccurate, and package unit costs an arm and a leg.
Summary of the invention
The purpose of this utility model is the device that proposes a kind of direct measurement, resistance strain gage is pasted on the appropriate location of turbine blade, distortion or vibration with the foil gauge induction blade, again the electric signal that obtains is drawn, through processing and amplifying, change electric signal into light signal, be transferred to the receiver of turning axle outer end, import the blade state detection circuit at last, finish the real-time detection of blade state.That is, under the situation that impeller shaft rotates, blade state signal source source constantly is transported in the impeller shaft testing circuit in addition.
Concrete technical scheme of the present utility model is a kind of on-line measuring device of rotating vane vibration, one motor is installed on the base, turning axle also is installed on the base by the pair of bearing supporting, one end of turning axle is equipped with belt pulley, the other end of turning axle is equipped with impeller, impeller is equipped with blade, and the flywheel of motor rotates by belt driven rotary axle; Be pasted with resistance strain gage on the described blade, the distortion of resistance strain gage induction blade or vibration, the lead that resistance strain gage connects passes right center pit and right wire guide is connected to circuit board, after the signal process circuit board processing and amplifying, the lead that circuit board is drawn is connected the light emitting diode of transmitting terminal again with the LC hole by left wire guide, change electric signal into light signal, optical signal transmission is given the receiver of the receiving end of installing outside the turning axle.
Between two left and right sides wire guides of described turning axle the circuit board installation site is arranged.
Described turning axle has left and right sides wire guide radially, and its position is on the turning axle about the circuit board installation site.
Respectively there is left and right sides center pit at the two ends of described turning axle and communicates with left and right sides wire guide.
Described light emitting diode position keeps coaxial with the outer receiving end receiver of installing of turning axle.
Described circuit board is battery-powered.
The beneficial effects of the utility model are, turning axle rotatablely moves continuously, the machine performance of blade is converted into electric signal, again by wire guide, center pit in the turning axle, walk around bearing, by light emitting diode, the receiver to turning axle outside sends light signal again, makes the machine performance that testing circuit can real-time online acquisition blade.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that turning axle of the present utility model is analysed and observe diagrammatic sketch.
Wherein: 1 blade; 2 resistance strain gages; 3 impellers; 4 bearing seats; 5 turning axles; 6 right wire guides; 7 circuit boards; 8 left wire guides; 9 transmitting terminals; 10 receiving ends; 11 motor; 12 belts; 13 flywheels; 14 impeller installation sites; 15 left and right center pits; 16 bearing positions; 17 circuit board installation sites; 18 belt pulley installation sites.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Claims (6)
1. the on-line measuring device of rotating vane vibration, one motor is installed on the base, turning axle also is installed on the base by the pair of bearing supporting, one end of turning axle is equipped with belt pulley, the other end of turning axle is equipped with impeller, impeller is equipped with blade, and the flywheel of motor rotates by belt driven rotary axle; It is characterized in that: be pasted with resistance strain gage on the described blade, the distortion of resistance strain gage induction blade or vibration, the lead that resistance strain gage connects passes right center pit and right wire guide is connected to circuit board, after the signal process circuit board processing and amplifying, the lead that circuit board is drawn is connected the light emitting diode of transmitting terminal again with the LC hole by left wire guide, change electric signal into light signal, optical signal transmission is given the receiver of the receiving end of installing outside the turning axle.
2. on-line measuring device according to claim 1 is characterized in that: between two left and right sides wire guides of described turning axle the circuit board installation site is arranged.
3. on-line measuring device according to claim 1 is characterized in that: described turning axle has left and right sides wire guide radially, and its position is on the turning axle about the circuit board installation site.
4. on-line measuring device according to claim 1 is characterized in that: respectively there is left and right sides center pit at the two ends of described turning axle and communicates with left and right sides wire guide.
5. on-line measuring device according to claim 1 is characterized in that: described light emitting diode position keeps coaxial with the outer receiving end receiver of installing of turning axle.
6. on-line measuring device according to claim 1 is characterized in that: described circuit board is battery-powered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202027386U CN201285276Y (en) | 2008-10-31 | 2008-10-31 | On-line detection apparatus for rotating vane vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202027386U CN201285276Y (en) | 2008-10-31 | 2008-10-31 | On-line detection apparatus for rotating vane vibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201285276Y true CN201285276Y (en) | 2009-08-05 |
Family
ID=40950262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202027386U Expired - Fee Related CN201285276Y (en) | 2008-10-31 | 2008-10-31 | On-line detection apparatus for rotating vane vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201285276Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982724A (en) * | 2010-09-21 | 2011-03-02 | 同济大学 | Online real-time monitoring method for dynamic deflection deformation of wind driven generator blade |
| CN102478396A (en) * | 2010-11-30 | 2012-05-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Form, position and dimension measuring method of blisk blade and tool thereof |
| CN103148834A (en) * | 2013-02-07 | 2013-06-12 | 石河子大学 | Hand-held plant leaf movement azimuth angle electronic measuring instrument |
| CN104807539A (en) * | 2015-04-30 | 2015-07-29 | 苏州承乐电子科技有限公司 | Impeller blade vibration detecting device |
| CN108562221A (en) * | 2018-04-20 | 2018-09-21 | 石家庄铁道大学 | The husky shovel testing stand of collection |
-
2008
- 2008-10-31 CN CNU2008202027386U patent/CN201285276Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982724A (en) * | 2010-09-21 | 2011-03-02 | 同济大学 | Online real-time monitoring method for dynamic deflection deformation of wind driven generator blade |
| CN102478396A (en) * | 2010-11-30 | 2012-05-30 | 沈阳黎明航空发动机(集团)有限责任公司 | Form, position and dimension measuring method of blisk blade and tool thereof |
| CN102478396B (en) * | 2010-11-30 | 2013-10-23 | 沈阳黎明航空发动机(集团)有限责任公司 | Form, position and dimension measuring method of blisk blade and tool thereof |
| CN103148834A (en) * | 2013-02-07 | 2013-06-12 | 石河子大学 | Hand-held plant leaf movement azimuth angle electronic measuring instrument |
| CN103148834B (en) * | 2013-02-07 | 2015-09-09 | 石河子大学 | Hand-held plant leaf movement azimuth angle electronic gauge |
| CN104807539A (en) * | 2015-04-30 | 2015-07-29 | 苏州承乐电子科技有限公司 | Impeller blade vibration detecting device |
| CN108562221A (en) * | 2018-04-20 | 2018-09-21 | 石家庄铁道大学 | The husky shovel testing stand of collection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090805 Termination date: 20111031 |