CN106199186A - A kind of phase test device - Google Patents
A kind of phase test device Download PDFInfo
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- CN106199186A CN106199186A CN201510223191.2A CN201510223191A CN106199186A CN 106199186 A CN106199186 A CN 106199186A CN 201510223191 A CN201510223191 A CN 201510223191A CN 106199186 A CN106199186 A CN 106199186A
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Abstract
The embodiment of the invention discloses a kind of phase test device, including: vibrating sensor data acquisition unit, stroboscope and vibrating sensor；The first input end of described vibrating sensor data acquisition unit is connected with the outfan of described stroboscope, the second input is connected with the outfan of described vibrating sensor；Stroboscope is for the key signal identical with the rotational frequency of tested slewing to the output of described vibrating sensor data acquisition unit；Vibrating sensor is for detection and to the vibration sensor signal of the described vibrating sensor data acquisition unit tested slewing of output.When using such scheme that the phase place of operating tested slewing is detected, the mark position of described tested slewing can be checked without stopping the operation of described tested slewing, and can be recorded the relative phase place with described mark position of vibration high point of described tested slewing by described vibrating sensor data acquisition unit, the most whole process saves time, laborsaving and cost is relatively low.
Description
Technical field
The present invention relates to rotating machinery dynamic balance instrument systems technology field, more particularly, it relates to a kind of one
Multiple frequency phase test device.
Background technology
In rotating machinery vibration analysis, phase place has its particular meaning.It refers in vibration signal and rotating shaft
Phase contrast between a certain labelling.When labelling in rotating shaft turns at key phase vibrating sensor, just
A pulse signal can be produced.Phase place is defined as reference pulse signal with certain point on vibration signal (such as
Posivtive spike or zero point etc.) between phase contrast.The most more common phase place definition is calibration pulse
Signal leading edge is to the angle of front first positive peak of vibration signal, and i.e. pulse signal is front, and vibration signal is just
Peak value is rear.Reference pulse signal has two kinds of acquisition modes at present: one is to paste one on tested slewing
Reflective tape, luminous intensity distribution electric oscillation sensor, when described reflective tape is by photoelectric vibration sensor, due to
The aberration on rotating shaft surface and produce the pulse signal of and rotating speed Complete Synchronization；Two is to set in tested rotation
Spline on Bei, join vortex vibration sensor, when keyway is by vortex vibration sensor, owing to visiting
Distance between head and testee changes and produces pulse signal.Both approaches is desirable that at rotating shaft table
Face arranges significantly mark, if operating rotating shaft does not has both marks, as the initial stage does not splines,
Or cannot install vortex vibration sensor, the later stage does not pastes reflective tape yet, then cannot test phase, as
Fruit is shut down and re-pastes reflective tape, is intended to spend substantial amounts of financial resources, people for some Large-scale machine set
Power and material resources.In the case of non-stop-machine, the most how to measure the phase place of rotating shaft, become people in the art
One of technical problem that member is urgently to be resolved hurrily.
Summary of the invention
It is an object of the invention to provide a kind of phase test device, to solve in prior art to operation
In tested slewing when carrying out phase measurement, need first to stop described tested slewing and run, from
And test process needs to spend substantial amounts of financial resources, manpower and material resources.
For achieving the above object, following technical scheme is embodiments provided:
A kind of phase test device, including:
Vibrating sensor data acquisition unit, stroboscope and vibrating sensor；
The first input end of described vibrating sensor data acquisition unit is connected with the outfan of described stroboscope,
Second input is connected with the outfan of described vibrating sensor；
Described stroboscope, for the output of described vibrating sensor data acquisition unit and tested slewing
Key signal that rotational frequency is identical, to the output of described tested slewing and described tested slewing with
The strobe signal of step；
Described vibrating sensor, exports tested rotation for detection and to described vibrating sensor data acquisition unit
Turn the vibration sensor signal of equipment.
Preferably, in above-mentioned phase test device, the power circuit of described stroboscope includes:
First end is for the switch being connected with electrical network the first phase line；
The first electric capacity that first end is connected with the second end of described switch；
First resistance in parallel with described first electric capacity；
The first diode that negative electrode is connected with described first electric capacity the second end；
First end is connected with described first diode anode, the second end is used for being connected with the second phase line of electrical network
The second resistance；
The second electric capacity with described second resistor coupled in parallel；
The second diode that anode is connected with described first electric capacity the second end；
One end is connected with described second diode cathode, the other end is connected with described second resistance the second end
3rd resistance；
The 3rd electric capacity with described 3rd resistor coupled in parallel.
Preferably, in above-mentioned phase test device, described power circuit also includes:
It is arranged on the protector between described second resistance and electrical network the second phase line.
Preferably, in above-mentioned phase test device, described protector is electric fuse or fuse.
Preferably, in above-mentioned phase test device, the stroboscopic circuit of described stroboscope includes:
First end for being connected with the positive pole of the power circuit of stroboscope, the second end is used for and described power supply mould
The first neon lamp that the negative pole of block is connected；
Secondary coil Same Name of Ends is connected with described first neon lamp, for ionizing the inertia in described first neon lamp
The pulse transformer of gas, the different name end of the secondary coil of described pulse transformer and described first neon lamp
Second end is connected；
The 4th resistance that one end of series connection is connected with described first neon lamp the first end；
First end is connected with the described 4th resistance other end, the second end and described pulse transformer primary winding
Same Name of Ends be connected the 4th electric capacity；
First end is connected with described 4th electric capacity the first end, the second end and described pulse transformer primary coil
Different name end be connected the 5th resistance；
The crystalline substance that negative electrode is connected with described 4th electric capacity the first end, anode is connected with described 5th resistance the second end
Brake tube；
First end controls, with described IGCT, the second neon lamp that end is connected；
First end is connected with the second end of described second neon lamp, the second end is connected with the anode of described IGCT
The 5th electric capacity；
The 8th resistance that one end is connected with the second end of described 5th electric capacity；
First end is connected with the described 8th resistance other end, control end is connected with described second neon lamp the second end
Adjustable resistance；
One end is connected with described adjustable resistance the second end, the other end is connected with described 4th resistance the first end
7th resistance.
Preferably, in above-mentioned phase test device, the key signal generation circuit of described stroboscope includes:
First common port and described IGCT control that end is connected, another common port is as described stroboscope
Key signal outfan, the 6th electric capacity in parallel and the 9th resistance；
One end and described IGCT control that end is connected, the other end is connected with the anode of described IGCT the
Six resistance.
Preferably, in above-mentioned phase test device, described vibrating sensor is for being arranged on tested slewing
Piezoelectric type acceleration vibrating sensor on bearing block or speed vibrating sensor or current vortex displacement vibration pass
Sensor.
Preferably, in above-mentioned phase test device, described stroboscope is the pulse voltage that can export 5V
The stroboscope of key signal.
By above scheme, when using technique scheme disclosed in the present application to operating tested
When the phase place of slewing detects, set by described vibrating sensor being arranged on described tested rotation
Standby appropriate location, adjusts the flashing rate of described stroboscope output so that it is with described tested slewing
Rotational frequency identical, user i.e. can be observed the surface condition on tested slewing surface, from checking
To the mark position on described tested slewing surface, meanwhile, described stroboscope is additionally operable to described vibration
Sensor data acquisition device run-out key phase signals, described vibrating sensor data acquisition unit get described
After the vibration sensor signal of vibrating sensor output and the key signal of described stroboscope output, shown
Angle signal be the slewing vibration mark observed relative to user of high point by described stroboscope
The phase contrast of position, i.e. one multiple frequency phase.Therefore without stop described tested slewing run can look into
See a frequency multiplication angle position of tested slewing, and can be by described vibrating sensor data acquisition
Device records the relative phase contrast with described mark position of vibration high point of described tested slewing, the most whole
Individual process saves time, laborsaving and cost is relatively low.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structure chart of a kind of phase test device disclosed in the embodiment of the present invention；
Fig. 2 is the circuit structure diagram of a kind of stroboscope disclosed in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
Stroboscope refers to control light source luminescent, the optical gauge quickly flashed with characteristic frequency.Stroboscopic
Instrument can send the most frequent of short duration flash of light, when rotation or the movement velocity of flashing rate with testee connect
Near or when synchronizing, utilize persistence of vision or the audio video synchronization of eyes, high-speed moving object can be observed easily
Surface quality or operation conditions.
The embodiment of the invention discloses a kind of phase test device, real for realizing in the case of non-stop-machine
The phase measurement of the existing tested slewing of unit, sees Fig. 1, including:
Vibrating sensor data acquisition unit 1, stroboscope 2 and vibrating sensor 3；
Wherein, the first input end of described vibrating sensor data acquisition unit 1 and described stroboscope 2 is defeated
Go out that end is connected, the second input is connected with the outfan of described vibrating sensor 3；
Described stroboscope 2, for the output of described vibrating sensor data acquisition unit 1 and tested slewing
Strobe signal that the rotational frequency of (such as rotor) is identical, export with described to described tested slewing
The strobe signal that tested slewing synchronizes；
Described vibrating sensor 3, for detecting and exporting to described vibrating sensor data acquisition unit 1 described
The vibration sensor signal of tested slewing.
When measuring the phase place of tested slewing, by described vibrating sensor 3 is arranged on described quilt
Survey the appropriate location (being able to detect that the position of the vibration signal of described tested slewing) of slewing,
Adjust the flashing rate of described stroboscope 2 output so that it is with the rotational frequency phase of described tested slewing
With, user i.e. can be observed the surface condition on tested slewing surface, from viewing described tested rotation
Turning the mark position (such as keyway, corrosion bolt etc.) of equipment surface, meanwhile, described stroboscope is also used
In to described vibrating sensor data acquisition unit 1 run-out key phase signals, described vibrating sensor data acquisition
Device 1 exports in the vibration sensor signal and described stroboscope getting the output of described vibrating sensor 3
After key signal, shown angle signal is actual vibration sensor high point with user by described frequency
Dodge the phase contrast of the mark position that instrument is observed.Set if described tested slewing is the tested rotation of rigidity
Standby, and when described vibrating sensor 3 is output as acceleration signal, then this phase place recorded is imbalance
The phase place of quality, if described tested slewing is flexible tested slewing, then along described tested rotation
Turn the phase of the unbalance mass that i.e. can get described tested slewing after equipment direction of rotation turns over angle of lag
Position.
Visible, when using technical scheme disclosed in the above embodiments of the present application, operating tested rotation is set
When standby phase place detects, it is not necessary to stopping the operation of described tested slewing can be by described stroboscope
The mark position of described tested slewing can be checked, and can be by described vibrating sensor data
Harvester records the relative phase place with described mark position of vibration high point of described tested slewing, therefore
Whole process saves time, laborsaving and cost is relatively low.
It is understood that the described vibrating sensor in the above embodiments of the present application can be in prior art
The vibrating sensor of any one vibration signal that can detect tested slewing, such as, it can be pressure
Electric-type acceleration vibrating sensor or speed vibrating sensor or current vortex displacement vibrating sensor, when described
When vibrating sensor is piezoelectric type acceleration vibrating sensor or speed vibrating sensor, described vibrating sensing
Device can be arranged on the bearing block of tested slewing.It is understood that the most described vibrating sensing
Device is what type of vibrating sensor, those skilled in the art in the case of not paying creative work,
Described vibrating sensor can be easily found according to its function and the set-up mode of described tested slewing
The position that should install.
It is understood that the described stroboscope in the above embodiments of the present application can be to appoint in prior art
Anticipate and be capable of the stroboscope of adjustable key signal, certainly, so that the working power of described stroboscope
More stable, disclosed herein as well is the power circuit of a kind of described stroboscope, see Fig. 2, described power supply
Circuit may include that
Switch S1, the first electric capacity C1, the first resistance R1, the first diode VD1, the second diode VD2,
Second electric capacity C2, the second resistance R2, the 3rd electric capacity C3 and the 3rd resistance R3, concrete structure is:
The normal-closed end of described switch S1 is connected with the first phase line of electrical network, described first electric capacity C1 and first
Resistance R1 is in parallel, first common port of described first electric capacity C1 and the first resistance R1 and described switch S1
Normally opened end connect, another common port and the negative electrode of described first diode VD1, the second diode VD2
Anode be connected, described second electric capacity C2 and the second resistance R2 parallel connection, described second electric capacity C2 and the
First common port of two resistance R2 is connected with the anode of described second diode VD1, another common port with
Second phase line of electrical network is connected, and described 3rd electric capacity C3 and the 3rd resistance R3 is in parallel, described 3rd electric capacity
First common port of C3 and the 3rd resistance R3 is connected with the negative electrode of described second diode VD2, the second public affairs
End is connected with second common port of the second electric capacity C2 after described parallel connection and the second resistance R2 altogether.
It is understood that in order to foregoing circuit is protected, to prevent electric current in circuit excessive to electricity
Damage is caused on road, sees Fig. 2, is also provided with one described in the above embodiments of the present application in power circuit
Protector F1, described protector F1 are arranged on described electrical network second and are connected and described second electric capacity C2 and the
Between second common port of two resistance R2, the most described electrical network the second phase line is by described protector and described the
Second common port of two electric capacity C2 and the second resistance R2 is connected.Described protector F1 is specifically as follows fusing
Device or electric fuse etc. any one can when circuit crosses stream disconnecting circuit connect circuit or device.
From the circuit structure of above-mentioned power circuit, the power supply of the described stroboscope in the embodiment of the present application
Circuit is sent to subsequent conditioning circuit after civil power uses full wave and voltage doubling current rectifying and wave filtering circuit rectification, and power supply performance is more
By force.Concrete principle is: 220VC civil power through the first resistance R1 and the first electric capacity C1 current limliting, filter after,
Again through the first diode VD1 and the second diode VD2 alternately to described second electric capacity C2 and the 3rd electricity
Hold C3 charge and carry out 2 times of boostings, i.e. can obtain the crest voltage of about about 620V, for described stroboscopic
Neon lamp flash of light in instrument is prepared.
Additionally, so that strobe effect is the most stable, disclosed herein as well is in a kind of described stroboscope
The concrete structure of stroboscopic circuit, see Fig. 2, including:
First neon lamp DS1, the second neon lamp DS2, IGCT Q1, pulse transformer T1, the 4th electric capacity
C4, the 4th resistance C4, the 5th electric capacity C5, the 5th resistance R5, the 7th resistance R7, the 8th resistance R8,
Adjustable resistance RP, concrete annexation is:
First end of described first neon lamp DS1 is connected with the positive pole of power circuit and (i.e. goes up a power circuit real
Execute the negative electrode of the described second diode VD2 in example), the second end is connected with the negative pole of described power circuit
(i.e. go up the second public of the described second electric capacity C2 in a power circuit embodiment and the second resistance R2
End), the outfan (Same Name of Ends of secondary windings) of described pulse transformer T1 and described first neon lamp
DS1 is connected, for ionizing the noble gas in described first neon lamp, the first of described pulse transformer T1
Input (Same Name of Ends of primary coil) is connected with second end of described 4th electric capacity C4, and described pulse becomes
Second input (Same Name of Ends of primary coil) of depressor T1 connects with second end of described 5th resistance R5
Connecing, first end of described 5th resistance R5 is connected with first end of described 4th electric capacity C4, and the described 5th
Resistance R5 is connected with second end of described 4th resistance R4 with the common node of described 4th electric capacity C4,
First end of described 4th resistance R4 is connected with the positive pole of power circuit, the negative electrode of described IGCT Q1 with
5th resistance R5, the common node of the 4th electric capacity C4 are connected, the anode of described IGCT Q1 and described the
Second end of five resistance R5 is connected, and described IGCT Q1 controls pole, the public joint of the second neon lamp DS2
Point is connected.First end of described second neon lamp DS2 controls end common node with described IGCT Q1 and is connected,
Second end of described second neon lamp DS2 is connected with one end of described 5th electric capacity C5, described 5th electric capacity
The other end of C5 is connected with the anode common node of described IGCT Q1.Another of described 5th electric capacity C5
End is connected with the control end of the anode common node of described IGCT Q1, described adjustable resistance RP, adjustable
One end of resistance RP is connected with one end of described 8th resistance R8, the other end and described 7th resistance R7
One end be connected, the other end of described 7th resistance R7 and described 4th resistance R4, the first neon lamp DS1,
One end of 3rd electric capacity C3 and the 3rd resistance R3 parallel connection and the public joint of described second diode VD2 negative electrode
Point is connected.
Wherein, in above-mentioned stroboscopic circuit, described 4th resistance R4, the 5th resistance R5, the 4th electric capacity C4,
Pulse transformer T1 and IGCT Q1 forms stroboscopic trigger element；Described 7th resistance R7, adjustable resistance
RP, the 8th resistance R8 and the second neon lamp DS2 form stroboscopic trigger control unit.Described 7th resistance R7,
The bleeder circuit of adjustable resistance RP and the 8th resistance R8 composition, to described 5th electric capacity C5 charging, works as institute
When stating the starting voltage that the charging voltage of the 5th electric capacity C5 reaches described second neon lamp DS2, described brilliant lock
Pipe Q1 turns on；Owing to described 4th resistance R4 is to described 4th electric capacity C4 charging (described 5th resistance
R5 current limliting is to ensure the described 4th electric capacity C4 voltage rated voltage less than pulse transformer T1), when
During IGCT Q1 conducting, described 4th electric capacity C4 is discharged by the primary coil of pulse transformer T1,
Sensing the voltage of nearly ten thousand volts on described secondary coil, moment ionizes the inertia in described first neon lamp DS1
Gas, fluorescent tube turns on, and in described second electric capacity C2 and the 3rd electric capacity C3, the electric charge of accumulation is by the first neon
Lamp DS1 produces once strong arclight, it is achieved a stroboscopic.After described first neon lamp DS1 build-up of luminance, institute
State the second electric capacity C2, the 3rd electric capacity C3, the voltage of the 4th electric capacity C4 and the 5th electric capacity C5 drastically decline,
Magnitude of voltage returns to original state.User can make described frequency by the resistance regulating described adjustable resistance RP
Dodge instrument Tong Bu with described tested slewing.
Those skilled in the art are by selecting suitable 7th resistance R7, adjustable resistance RP and the 5th electric capacity
C5, by regulating the numerical value of described adjustable resistance RP, i.e. can get the charging interval under different operating modes normal
Number and strobing frequency.
It is understood that so that described stroboscope can export stable key signal, the application
Also disclose the key signal generation circuit of a kind of described stroboscope, with above-described embodiment disclosed in stroboscopic electricity
Road is connected, and sees Fig. 2, including:
6th resistance R6, the 6th electric capacity C6, the 9th resistance R9, concrete structure is；
One end of described 6th resistance R6 is connected with the anode of described IGCT Q1, the other end and described crystalline substance
The control end of brake tube Q1 is connected, described 6th electric capacity C6 and the 9th resistance R9 parallel connection and the first common port
It is connected with the common node controlling end of described resistance R6, IGCT Q1, described 6th electric capacity C6 and the
Another common port of nine resistance R9 is as key signal outfan and described vibrating sensor data acquisition unit 1
It is connected.
Its principle is, when described 5th electric capacity C5 boosts to the starting voltage of the second neon lamp DS2, brilliant
Brake tube Q1 is triggered, and triggering waveform is a pulse signal.IGBT group voltage UG is 1～5V.Root
According to the key phase input voltage grade of the vibrating data collection device 1 accessed, by described 6th electric capacity C6 and
9th resistance R9 carries out dividing potential drop, filtering, and as triggering the pulse signal of vibrating data collection device 1.
In sum, technical scheme disclosed in the present application is by utilizing the bright of tested slewing exposed part
Aobvious mark (such as keyway etc.), by regulation frequency by described sudden strain of a muscle instrument and tested slewing synchronization, from
And realize slewing one frequency multiplication amplitude and phase measurement.
In this specification, each embodiment uses the mode gone forward one by one to describe, and each embodiment stresses
Being the difference with other embodiments, between each embodiment, identical similar portion sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (8)
1. a phase test device, it is characterised in that including:
Vibrating sensor data acquisition unit, stroboscope and vibrating sensor；
The first input end of described vibrating sensor data acquisition unit is connected with the outfan of described stroboscope,
Second input is connected with the outfan of described vibrating sensor；
Described stroboscope, for the output of described vibrating sensor data acquisition unit and tested slewing
Key signal that rotational frequency is identical, Tong Bu with tested slewing to the output of described tested slewing
Strobe signal；
Described vibrating sensor, exports tested rotation for detection and to described vibrating sensor data acquisition unit
Turn the vibration sensor signal of equipment.
Phase test device the most according to claim 1, it is characterised in that the electricity of described stroboscope
Source circuit includes:
First end is for the switch being connected with electrical network the first phase line；
The first electric capacity that first end is connected with the second end of described switch；
First resistance in parallel with described first electric capacity；
The first diode that negative electrode is connected with described first electric capacity the second end；
First end is connected with described first diode anode, the second end is used for being connected with the second phase line of electrical network
The second resistance；
The second electric capacity with described second resistor coupled in parallel；
The second diode that anode is connected with described first electric capacity the second end；
One end is connected with described second diode cathode, the other end is connected with described second resistance the second end
3rd resistance；
The 3rd electric capacity with described 3rd resistor coupled in parallel.
Phase test device the most according to claim 2, it is characterised in that described power circuit is also
Including:
It is arranged on the protector between described second resistance and electrical network the second phase line.
Phase test device the most according to claim 3, it is characterised in that described protector is for protecting
Danger silk or fuse.
Phase test device the most according to claim 1, it is characterised in that the frequency of described stroboscope
Lightning road includes:
First end for being connected with the positive pole of the power circuit of stroboscope, the second end is used for and described power supply mould
The first neon lamp that the negative pole of block is connected；
Secondary coil Same Name of Ends is connected with described first neon lamp, for ionizing the inertia in described first neon lamp
The pulse transformer of gas, the different name end of the secondary coil of described pulse transformer and described first neon lamp
Second end is connected；
The 4th resistance that one end of series connection is connected with described first neon lamp the first end；
First end is connected with the described 4th resistance other end, the second end and described pulse transformer primary winding
Same Name of Ends be connected the 4th electric capacity；
First end is connected with described 4th electric capacity the first end, the second end and described pulse transformer primary coil
Different name end be connected the 5th resistance；
The crystalline substance that negative electrode is connected with described 4th electric capacity the first end, anode is connected with described 5th resistance the second end
Brake tube；
First end controls, with described IGCT, the second neon lamp that end is connected；
First end is connected with the second end of described second neon lamp, the second end is connected with the anode of described IGCT
The 5th electric capacity；
The 8th resistance that one end is connected with the second end of described 5th electric capacity；
First end is connected with the described 8th resistance other end, control end is connected with described second neon lamp the second end
Adjustable resistance；
One end is connected with described adjustable resistance the second end, the other end is connected with described 4th resistance the first end
7th resistance.
Phase test device the most according to claim 5, it is characterised in that the key of described stroboscope
Phase signals generation circuit includes:
First common port and described IGCT control that end is connected, another common port is as described stroboscope
Key signal outfan, the 6th electric capacity in parallel and the 9th resistance；
One end and described IGCT control that end is connected, the other end is connected with the anode of described IGCT the
Six resistance.
Phase test device the most according to claim 1, it is characterised in that described vibrating sensor
Vibrate for the piezoelectric type acceleration vibrating sensor being arranged on the bearing block of tested slewing or speed and pass
Sensor or current vortex displacement vibrating sensor.
Phase test device the most according to claim 1, it is characterised in that described stroboscope is energy
Enough export the stroboscope of the key signal of the pulse voltage of 5V.
Priority Applications (1)
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| CN201510223191.2A CN106199186B (en) | 2015-05-05 | 2015-05-05 | phase testing device |
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|---|---|---|---|
| CN201510223191.2A CN106199186B (en) | 2015-05-05 | 2015-05-05 | phase testing device |
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| CN106199186B CN106199186B (en) | 2020-01-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607782A (en) * | 2017-08-09 | 2018-01-19 | 中国长江电力股份有限公司 | A kind of method for water turbine units PMU device key phase pulse signal square wave shapings |
| WO2023029433A1 (en) * | 2021-08-31 | 2023-03-09 | 青岛海尔空调器有限总公司 | Pipeline vibration testing apparatus |
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| CN101750198A (en) * | 2008-11-28 | 2010-06-23 | 上海宝钢工业检测公司 | Method for measuring corresponding phase positions of vibration signals of different measuring points of rotary machine |
| CN101451898A (en) * | 2009-01-13 | 2009-06-10 | 华北电力大学 | Steam-electric generating set rotor thermal bending unbalance fault real time diagnostic method |
| CN203981344U (en) * | 2014-08-19 | 2014-12-03 | 哈尔滨汇通电力工程有限公司 | Universal strobe type vibration phase adapter |
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| CN107607782A (en) * | 2017-08-09 | 2018-01-19 | 中国长江电力股份有限公司 | A kind of method for water turbine units PMU device key phase pulse signal square wave shapings |
| WO2023029433A1 (en) * | 2021-08-31 | 2023-03-09 | 青岛海尔空调器有限总公司 | Pipeline vibration testing apparatus |
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