CN206876293U - The contactless vibration measuring system of vibratory equipment - Google Patents
The contactless vibration measuring system of vibratory equipment Download PDFInfo
- Publication number
- CN206876293U CN206876293U CN201720626737.3U CN201720626737U CN206876293U CN 206876293 U CN206876293 U CN 206876293U CN 201720626737 U CN201720626737 U CN 201720626737U CN 206876293 U CN206876293 U CN 206876293U
- Authority
- CN
- China
- Prior art keywords
- laser
- vibratory equipment
- reference beam
- vibration
- measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model discloses the contactless vibration measuring system of vibratory equipment, including：Vibratory equipment；Laser doppler vibrometer, it includes generating laser, laser beam for laser transmitter projects to be gone out is divided into the first reflective prism of measuring beam and reference beam, reflecting prism for reflected reference beam, for by by vibratory equipment be scattered back Lai measuring beam the second reflective prism and the 3rd reflective prism that converge and be superimposed with the reference beam through reflection, for receiving the sensor of measuring beam and reference beam after being superimposed, and capture card and control cabinet, sensor is connected with collection card signal, and control cabinet is connected with collection card signal；For showing the console of vibration data, console is connected with collection card signal.The utility model middle vibration measuring mode using contact compared with prior art, do not influenceed by environment, measurement direction and measurement dynamics, there is higher precision, and it is convenient and simple, and maintenance workload is few.
Description
Technical field
The vibration measuring technical field of vibratory equipment is the utility model is related to, more particularly to the non-contact of vibratory equipment
Formula vibration measuring system.
Background technology
Power plant slewing mainly includes motor, water pump, steam turbine, gas turbine and generator etc., and these rotations are set
Standby vibration height operationally, directly influences that unit is normal, safe operation, careless slightly that personal injury etc. will likely occur
Special major accident.At present, vibration measurement of the electricity power enterprise to slewing and monitoring are mainly direct by piezoelectric accelerometer
Contact type measurement and the contactless monitoring of current vortex oscillation pickup.Piezoelectric accelerometer is the piezo-electric effect work based on piezo-electric crystal
, when piezo-electric crystal is because of vibration and during stress deformation, its voltage can change, and then be converted into vibration values.Current vortex vibration measuring
Device is to utilize the high frequency oscillating current in its fore-lying device, and the magnetic field of alternation is produced in the coil of probe head, when tested rotation
When the measured point of equipment is close to this magnetic field, the amplitude and phase of probe head coil high-frequency electric current then change, so as to real
The now measurement of the parameter such as vibration to equipment.
Existing slewing rotating speed shakes between 750r/min ~ 3000r/min according to two border rotating speeds of national standard
Dynamic amplitude must not exceed 0.12mm and 0.05mm respectively.The vibration routine work to slewing and monitoring process in power plant
In, the vibration measurement for the motor housing, the pump housing of static state uses piezoelectric accelerometer, for dynamic rotor and shaft coupling
Vibration measurement then use contactless current vortex oscillation pickup, for ensure measurement the degree of accuracy and precision, current vortex oscillation pickup
Must be very close to operating rotor and shaft coupling.
But because the periphery of the slewing in power plant is high temperature, high-tension apparatus and pipeline, use direct contact type
Piezoelectric accelerometer measurement many potential safety hazards are brought to operating personnel, while piezoelectric accelerometer is easily by environment and survey
The influence in direction, dynamics is measured, therefore its precision is often barely satisfactory.Shaken although current vortex oscillation pickup is non-contact type measuring device
Emotionally condition, it is not required that staff is hand-held to be measured, but its fixed seat is arranged in Power House ambient vibration in itself
It is just very big, while the vibration measuring distance of current vortex oscillation pickup requirement is millimeter rank, therefore its installation and debugging is complicated, maintenance work
Amount is big, and precision is also limited.
Utility model content
The technical problems to be solved in the utility model is to provide that a kind of precision is high, the few vibratory equipment of maintenance workload it is non-
Contact vibration measuring system.
The technical solution of the utility model is：The contactless vibration measuring system of vibratory equipment, including：
Vibratory equipment；
Laser doppler vibrometer, it includes generating laser, for the laser beam for going out the laser transmitter projects
It is divided into the first reflective prism of measuring beam and reference beam, for reflecting the reflecting prism of the reference beam, for will be by
The vibratory equipment is scattered back the measuring beam come and second that the reference beam through reflection converges and is superimposed is reflective
Prism and the 3rd reflective prism, for receiving the sensor of the measuring beam and reference beam after being superimposed, and capture card
And control cabinet, the sensor are connected with the collection card signal, the control cabinet is connected with the collection card signal；
For showing the console of vibration data, the console is connected with the collection card signal.
The generating laser uses He-Ne Lasers transmitter, either carbon monoxide laser transmitter or carbon dioxide
Generating laser.
The laser doppler vibrometer quantity is one, two or three.
The utility model proposes vibratory equipment contactless vibration measuring system, the measuring beam that laser transmitter projects go out
Vibratory equipment is transmitted to by the second smooth prism, the surface scattering of vibratory equipment is returned measuring beam, is scattered back the measurement come
Light beam reaches sensor through the second smooth prismatic reflection and through the 3rd smooth prism, and reference beam reflexes to the 3rd light by speculum
It is superimposed on prism and with measuring beam, the measuring beam after superposition is received by sensor with reference beam and generates vibration data,
And vibration data is shown by console, the middle vibration measuring mode using contact compared with prior art, not by environment, measurement side
To the influence with measurement dynamics, there is higher precision, and it is convenient and simple, and maintenance workload is few.
Brief description of the drawings
Fig. 1 is the schematic diagram of the contactless vibration measuring system of the utility model vibratory equipment.
Fig. 2 is the structured flowchart of control cabinet in the utility model.
Embodiment
Such as Fig. 1, the utility model proposes vibratory equipment contactless vibration measuring system, including vibratory equipment 1, laser is more
General Le vialog 2 and console 4.Vibratory equipment 1 can be motor, water pump, steam turbine, combustion gas wheel and generator.
Laser doppler vibrometer 2 is used for the vibration data for measuring vibratory equipment（Displacement, speed including vibratory equipment and
Acceleration）, laser doppler vibrometer includes generating laser 21, and the laser beam for generating laser 21 to be launched is divided into
First reflective prism 22 of measuring beam 5 and reference beam 6, for the reflecting prism 23 of reflected reference beam, for will be by shaking
It is anti-that dynamic equipment is scattered back the second reflective prism 24 and the 3rd that the measuring beam come converges and is superimposed with the reference beam through reflection
Light prism 25, and for receiving the sensor 26 of measuring beam and reference beam after being superimposed.In the present embodiment, Laser emission
Device 21 can use He-Ne Lasers transmitter, either carbon monoxide laser transmitter or carbon dioxide laser transmitter.Laser
The laser beam that transmitter 21 is launched is divided into measuring beam and reference beam by the first reflective prism 22, and measuring beam passes through second
Reflective prism 24 is transmitted to vibratory equipment 1, and the surface scattering of vibratory equipment 1 is returned measuring beam, is scattered back the measuring beam come
Reflected through the second reflective prism 24 and reach sensor 26 through the 3rd reflective prism 25.Reference beam is anti-by reflecting prism 23
It is incident upon on the 3rd reflective prism 25 and is superimposed with measuring beam, the measuring beam after superposition produces interference signal quilt with reference beam
Sensor 26 receives, and sensor 26 generates vibration data by interference signal.It is generating laser 21, the first reflective prism 22, anti-
Penetrate prism 23, the second reflective prism 24, the 3rd reflective prism 25 and sensor 26 and form laser doppler vibrometer optical head 29.
Laser doppler vibrometer 2 also includes capture card 27 and control cabinet 28, and capture card 27 passes through data wire 3 and sensor
26 signals are connected, and control cabinet 28 is connected by data wire 3 respectively at capture card 27 with the signal of console 4, and capture card 27 is used to adopt
The vibration data that collection laser doppler vibrometer 2 measures（Record the function of vibration data）, the model NI9215 of capture card 27.
Control cabinet 28 is used to control when gather vibration data（Equivalent to switch）, analysis vibration data and power supply power supply.Collection vibration
Whether the demand of data is to control whether capture card 27 receives the vibration data of sensor 26 to realize by control cabinet 28,
I.e. if gather vibration data demand, control cabinet 28 come control capture card 27 receive sensor 26 vibration data, collection
After 27 pairs of vibration datas of card record, vibration data is transferred to control cabinet 28 again, control cabinet 28 divides vibration data
Analysis；If the demand without collection vibration data, control cabinet 28 control the capture card 27 not receive the vibration data of sensor 26.And
No matter the whether collected card 27 of the vibration data of sensor 26 receives, and laser doppler vibrometer 2 is constantly in working condition（I.e.
Generating laser is constantly in working condition, and simply whether the vibration data of sensor 26 is received）.In actual applications, adopt
Truck 2 is provided in inside control cabinet 28.With reference to figure 2, control cabinet 28 includes signal behavior control panel 281,50mm speed plates
282nd, 100mm speed plate 283, power module 284 and fan 285, signal behavior control panel 281 and capture card 27 and console 4
Signal connect, 50mm speed plate, 100mm speed plate and power module respectively with signal behavior control partitioned signal be connected, fan and
Power module electrically connects.
Console 4 is used to show vibration data and carries out configuration parameter, and the vibration data after control cabinet is analyzed is transferred to
Console 4 is simultaneously shown in the display screen of console 4, there is provided remote monitoring is realized to operation maintenance personnel, and by console also
Alarming value can be configured.
According to Doppler effect, reflected light of the measuring beam on vibratory equipment is according to the instantaneous of vibratory equipment body surface
Speed and frequency displacement.The frequency displacement and the speed of scanned vibratory equipment body surface are directly proportional.
Laser doppler vibrometer can be one, two or three in the utility model, exist for measuring vibratory equipment
Vibration values in two dimension or three-dimensional.
The utility model proposes vibratory equipment contactless vibration measuring system in power plant boiler water pump area, it is possible to achieve
To two boilers, motor side, motor drive terminal, shaft coupling, bearing electric machine side and the bearing pump side of 20 water pumps are vibrated
Value measurement, and the precision for the vibration values surveyed and the degree of accuracy are high.
Only to illustrate design of the present utility model, one of ordinary skill in the art's specific embodiment above exists
Various deformation and change can be made under design of the present utility model, these deformations and change are included in guarantor of the present utility model
Within the scope of shield.
Claims (3)
1. the contactless vibration measuring system of vibratory equipment, it is characterised in that including：
Vibratory equipment；
Laser doppler vibrometer, it includes generating laser, and the laser beam for the laser transmitter projects to be gone out is divided into
First reflective prism of measuring beam and reference beam, for reflecting the reflecting prism of the reference beam, for will be by described
Vibratory equipment is scattered back the second reflective prism that the measuring beam come converges and is superimposed with the reference beam through reflection
With the 3rd reflective prism, the sensor of the measuring beam and reference beam after being superimposed for reception, and capture card and control
Case processed, the sensor are connected with the collection card signal, and the control cabinet is connected with the collection card signal；
For showing the console of vibration data, the console is connected with the collection card signal.
2. the contactless vibration measuring system of vibratory equipment according to claim 1, it is characterised in that the generating laser
Using He-Ne Lasers transmitter, either carbon monoxide laser transmitter or carbon dioxide laser transmitter.
3. the contactless vibration measuring system of vibratory equipment according to claim 1, it is characterised in that the laser-Doppler
Vialog quantity is one, two or three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720626737.3U CN206876293U (en) | 2017-06-01 | 2017-06-01 | The contactless vibration measuring system of vibratory equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720626737.3U CN206876293U (en) | 2017-06-01 | 2017-06-01 | The contactless vibration measuring system of vibratory equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206876293U true CN206876293U (en) | 2018-01-12 |
Family
ID=61337680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720626737.3U Active CN206876293U (en) | 2017-06-01 | 2017-06-01 | The contactless vibration measuring system of vibratory equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206876293U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084882A (en) * | 2018-09-30 | 2018-12-25 | 华南理工大学 | Rotating Disk Vibration detection control apparatus and method |
| CN111637960A (en) * | 2020-04-26 | 2020-09-08 | 河海大学 | Vibration measuring system for eliminating vibration influence of base point of laser vibration meter |
| CN112556820A (en) * | 2020-11-10 | 2021-03-26 | 华电电力科学研究院有限公司 | Detection method of laser interference detection vibration device for tile vibration transverse vibration acceleration of wind turbine generator |
| CN113657426A (en) * | 2021-06-28 | 2021-11-16 | 国网江苏省电力有限公司电力科学研究院 | Heating-vibration combined detection method, device and system for GIL electric contact state |
| WO2022041006A1 (en) * | 2020-08-26 | 2022-03-03 | Siemens Aktiengesellschaft | Motor and vibration detection system and method thereof |
| CN114705283A (en) * | 2022-04-11 | 2022-07-05 | 河北工业大学 | Vibration measuring system for small motor |
-
2017
- 2017-06-01 CN CN201720626737.3U patent/CN206876293U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084882A (en) * | 2018-09-30 | 2018-12-25 | 华南理工大学 | Rotating Disk Vibration detection control apparatus and method |
| CN109084882B (en) * | 2018-09-30 | 2023-09-26 | 华南理工大学 | Rotary disc vibration detection control device and method |
| CN111637960A (en) * | 2020-04-26 | 2020-09-08 | 河海大学 | Vibration measuring system for eliminating vibration influence of base point of laser vibration meter |
| CN111637960B (en) * | 2020-04-26 | 2021-08-27 | 河海大学 | Vibration measuring system for eliminating vibration influence of base point of laser vibration meter |
| WO2022041006A1 (en) * | 2020-08-26 | 2022-03-03 | Siemens Aktiengesellschaft | Motor and vibration detection system and method thereof |
| CN112556820A (en) * | 2020-11-10 | 2021-03-26 | 华电电力科学研究院有限公司 | Detection method of laser interference detection vibration device for tile vibration transverse vibration acceleration of wind turbine generator |
| CN113657426A (en) * | 2021-06-28 | 2021-11-16 | 国网江苏省电力有限公司电力科学研究院 | Heating-vibration combined detection method, device and system for GIL electric contact state |
| CN114705283A (en) * | 2022-04-11 | 2022-07-05 | 河北工业大学 | Vibration measuring system for small motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206876293U (en) | The contactless vibration measuring system of vibratory equipment | |
| CN207248916U (en) | A kind of acceleration transducer calibrating installation | |
| CN105092877B (en) | Triangular wave phase-modulation semiconductor laser mixes tachymeter and its measurement method certainly | |
| CN206876369U (en) | The system for testing MEMS component vibration characteristics | |
| CN203241143U (en) | Online motor vibration monitoring device based on laser Doppler effect | |
| CN103884482A (en) | Vibration testing method and system based on compressor | |
| Halliwell | Laser vibrometers | |
| CN206019842U (en) | Blade vibration analog and the test system with which | |
| Castellini et al. | Development of the tracking laser vibrometer: performance and uncertainty analysis | |
| CN105840250A (en) | Vibration protecting device and method of steam-turbine generator set | |
| CN203798520U (en) | Ship structure vibration measuring instrument | |
| CN101915604A (en) | Portable shaft vibration gauge | |
| TW200402530A (en) | Axial torsion vibration measurement device of the internal pump | |
| US5059901A (en) | Visible light laser tachometer for sensing rotational speed of an object | |
| CN205593707U (en) | Turbo generator set high -and medium -voltage rotor dynamic balance optimizing apparatus | |
| CN205027438U (en) | Turbo generator set's vibration detection device and turbo generator set | |
| JPH0727601A (en) | Method and apparatus for measuring vibration in non-contact | |
| CN201765054U (en) | Portable shaft vibration measuring apparatus | |
| RU2337330C1 (en) | Method for spin and spin component amplitude measurement for rotodynamic machine blade oscillation, and device for implementation of method | |
| CN103335704A (en) | Vibration measurement device for laser interference rotor and measurement method thereof | |
| CN203011338U (en) | Device for testing transfer function of extensometer | |
| CN105865713A (en) | Dynamic balance optimizing device and method for high-medium-pressure rotor of steam turbine generator unit | |
| CN212275218U (en) | Vibration detection device of large megawatt fan | |
| CN207263334U (en) | A kind of ultrasonic wave temperature measuring equipment | |
| CN207456506U (en) | The performance test apparatus of flexible tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |