CN110208117A - Large-scale phase modifier stator winding end dynamic analysis hammering device, system and method - Google Patents
Large-scale phase modifier stator winding end dynamic analysis hammering device, system and method Download PDFInfo
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- CN110208117A CN110208117A CN201910355586.6A CN201910355586A CN110208117A CN 110208117 A CN110208117 A CN 110208117A CN 201910355586 A CN201910355586 A CN 201910355586A CN 110208117 A CN110208117 A CN 110208117A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/307—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/346—Testing of armature or field windings
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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Abstract
Large-scale phase modifier stator winding end dynamic analysis hammering device, system and method, hammering device, characterized in that hammered into shape including test, be additionally provided with Fixing clamp-seat on test hammer, the opposite two sides of Fixing clamp-seat are separately installed with movable block tongue；The test hammer is in the move in tracks being made of two curved rods positioned opposite, and the relative position of the medial surface of two curved rods has been respectively embedded into electromagnet, and electromagnet and arc track medial surface are in the same plane；Using detection and control circuit detect test hammer fall when, by control electromagnet obtain it is electric, be attracted test hammer rebound after uplink when positioned at Fixing clamp-seat two sides movable block tongue, and by test hammer fix.The hammering device of the disclosure is fixed after bouncing after being tested using detection and control circuit realization the primary hammering of test hammer, avoids secondary whereabouts, guarantees the precision measured.
Description
Technical field
This disclosure relates to which the field of test technology, is hammered into shape more particularly to large-scale phase modifier stator winding end dynamic analysis
Hit device, system and method.
Background technique
In order to examine whether large-scale phase modifier engineering unit stator winding end dynamic characteristic meets the requirements of the standard, need pair
Single unit carries out stator winding end dynamic characteristic test.
It is traditional in this test for the test that large-scale phase modifier stator winding end dynamic analysis carries out
Test method generates pumping signal using artificial hammering.But artificial hammer stimulating strength is not fixed, working effect is due to people
Different, the long people's fatiguability of test period influences test efficiency.
Summary of the invention
The purpose of this specification embodiment is to provide large-scale phase modifier stator winding end dynamic analysis hammering dress
It sets, the control to hammer is realized using automated control technology, guarantees that each hammer effect is consistent, effect is controllable, reduces personnel
Labor operations workload.
This specification embodiment provides large-scale phase modifier stator winding end dynamic analysis hammering device, by with
Lower technical solution is realized:
Include:
Test hammer, test are hammered into shape and are additionally provided with Fixing clamp-seat, and the opposite two sides of Fixing clamp-seat are separately installed with movable block tongue；
The test hammer is in the move in tracks being made of two curved rods positioned opposite, the medial surface of two curved rods
Relative position be respectively embedded into electromagnet, electromagnet and arc track medial surface are in the same plane；
Using detection and control circuit detect test hammer fall when, by control electromagnet obtain it is electric, be attracted test hammer
Movable block tongue after rebound when uplink positioned at Fixing clamp-seat two sides, and test hammer is fixed.
This specification embodiment provides the work of large-scale phase modifier stator winding end dynamic analysis hammering device
Method, characterized in that include:
Certain angle, torque spring energy storage are hammered into shape along hammer handle hinge pull-off test；
Test hammer is unclamped, test hammer falls under torque spring driving；
After percussion, test hammer is bounced, and when movable block tongue passes through electromagnet, Fixing clamp-seat two sides peace is sucked out in electromagnet action
The movable block tongue of dress；
Movable block tongue is stuck with electromagnet, and locking test hammer downward movement realizes that test hammer single falls, fixed to turn round
Power taps.
This specification embodiment provides large-scale phase modifier stator winding end dynamic analysis hammer systems, including power
Benefit requires 108 any hammering device, multifunctional signal regulating instrument and the host computers, in the test lead installation of the test hammer
Force sensor, the signal of the force sensor measuring are transmitted to multifunctional signal regulating instrument and carry out signal processing, multi-functional letter
Number regulating instrument will treated that signal is transmitted to host computer analyzes.
It can be realized using the hammering device and be locked after test hammer whereabouts is bounced, which is realized automatically using circuit control.
Compared with prior art, the beneficial effect of the disclosure is:
The hammering device of the disclosure utilizes torque spring energy storage, realizes the consistency of the size of the torsion of test hammer every time,
Convenient for guaranteeing the precision of test.
The hammering device of the disclosure is realized using detection and control circuit to solid after bouncing after the primary hammering test of test hammer
It is fixed, secondary whereabouts is avoided, guarantees the precision of measurement.
The mode that electromagnet and movable block tongue match is realized the fixation of test hammer by the disclosure, and technical concept is ingenious, skill
Art, which is realized, to be easy, and automatic to detect, is automatic fixed, detection is accurate, and it is accurate to fix result.
Detailed description of the invention
The Figure of description for constituting a part of this disclosure is used to provide further understanding of the disclosure, and the disclosure is shown
Meaning property embodiment and its explanation do not constitute the improper restriction to the disclosure for explaining the disclosure.
Fig. 1 is the mechanical structure detailed schematic of embodiment of the present disclosure；
Fig. 2 is the overall structure diagram of embodiment of the present disclosure；
Fig. 3 (a)-Fig. 3 (b) is the use state diagram of embodiment of the present disclosure；
Fig. 4 is the circuit control structure schematic diagram of embodiment of the present disclosure；
Fig. 5 (a)-Fig. 5 (b) is the sub first group of measurement result schematic diagram of the embodiment of the present disclosure；
Fig. 6 (a)-Fig. 6 (b) is the sub second group of measurement result schematic diagram of the embodiment of the present disclosure；
Fig. 7 (a)-Fig. 7 (b) is the sub- third group measurement result schematic diagram of the embodiment of the present disclosure.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the disclosure.Unless another
It indicates, all technical and scientific terms used herein has usual with disclosure person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the disclosure.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Examples of implementation one
Referring to shown in Fig. 1,2, Fig. 3 (a)-Fig. 3 (b), in a kind of typical examples of implementation, it is fixed to disclose large-scale phase modifier
Sub- winding overhang dynamic analysis hammering device, including test hammer, test hammer include tup and hammer handle, and one end of hammer handle connects
Tup, the other end are connected by linkage with pedestal, and pedestal is fixed on bottom plate, is provided between linkage and hammer handle
Torque spring is additionally provided with Fixing clamp-seat on the hammer handle of one end of tup, and the opposite two sides of Fixing clamp-seat are separately installed with
Movable block tongue.
The movement in two curved rods (guide rail) positioned opposite of test hammer, curved rod positioned opposite constitute test hammer into shape into
The arc track of row movement, one end of two curved rods are fixed on bottom plate, and the other end of two curved track bars passes through crossbeam phase
Connection, the relative position of the medial surface of two curved rods have been respectively embedded into electromagnet, and electromagnet is with arc track medial surface same
In one plane.
In one embodiment, the position for the bottom plate that test hammer falls offers hole, and the hole is slightly larger than test hammer tup
Diameter, tup fall in large-scale phase modifier stator winding end to be tested using the hole.
In one embodiment, the medium position of electromagnet is provided with optoelectronic switch, wherein a curved rod or two
It is provided with scale in a curved rod, is labeled with maximum position and minimum position that the torsion that drops hammer is hammered in the test into shape.
In one embodiment, one end that tup taps test is provided with rubber pad.
In one embodiment, above-mentioned large-scale phase modifier stator winding end dynamic analysis hammer systems test is basic
Method and step:
Certain angle, torque spring energy storage are hammered into shape along hammer handle hinge pull-off test.Pull-off test hammer is certain along hammer handle hinge
The process of angle can be realized manually, can also be realized by manipulator using control device.
It looses one's grip, test hammer falls under torque spring driving.
After percussion, test hammer is bounced, and when movable block tongue passes through electromagnet, Fixing clamp-seat two sides peace is sucked out in electromagnet action
The movable block tongue of dress.
Movable block tongue and electromagnet, are stuck, locking test hammer downward movement.
Realize that test hammer single falls by above-mentioned test, fixed torsion taps.Hammer single falls, and bounces rear locking.
In one embodiment, a certain position for not influencing test hammer movement on bottom plate is provided with control device, controls
Device includes shell and is arranged in the intracorporal detection of shell and control circuit.Shown in Figure 4, detection and control circuit include dropping hammer
Detection circuit, delay locked circuit, isolation comparison circuit, output signal conditioning circuit, reset circuit and solenoid driver circuit.
Fixing clamp-seat is installed on hammer handle, when test hammer falls, detects that test hammer falls using detection circuit of dropping hammer, and will
After detection signal is exported to delay locked circuit and is delayed, the isolation of circuit is realized in output to isolation comparison circuit, defeated later
Isolation, will be compared circuit output voltage positive transition and exported to electromagnet by the conditioning for carrying out signal to output signal conditioning circuit out
Driving circuit drives the actuating of relay, obtains electromagnet coil electric, and being located at for uplink is fixed after being attracted test hammer rebound
The movable block tongue of deck two sides, and be fixed.
In specific embodiment, detection circuit of dropping hammer include positioned at electromagnet medium position be provided with optoelectronic switch,
The phototriode Q1 of work, the emitter ground connection of phototriode Q1 are matched with photoswitc, collector divides two-way, all the way
It is connected to resistance R1, is connected to latch U1A all the way.
When work, when test hammer falls, the light dredging collateral in optoelectronic switch, phototriode Q1 cut-off, current collection are blocked
The lower jump of pull-up resistor R1 effect is high level again for pole, and after latch U1A signal processing, step is low level.
After detection circuit output step of dropping hammer is low level, low level signal is exported to delay locked circuit.
In the examples of implementation, delay locked circuit includes: the first branch and second branch being in parallel, first branch packet
The resistance R2, resistance R3 and capacitor C1 being connected in series are included, second branch includes the resistance R4, triode Q2 and triode being connected in series
Q3, wherein the output end of the latch U1A for detection circuit of dropping hammer is connected to the line between the resistance R2 of the first branch, resistance R3
On the road.
It is capacitor C1, by resistance R3, with given pace after low level in detection circuit output step of dropping hammer when work
Electric discharge.Capacitance voltage is delay locked circuit output voltage.
Delay locked circuit is connected with comparison circuit is isolated, wherein comparison circuit, which is isolated, includes and delay locked circuit
The connected amplifier U2A in one end of capacitor, the voltage follower circuit that amplifier U2A is constituted follow the capacitor of delay locked circuit
The output end of output voltage, amplifier U2A is connected with the negative pole end of amplifier U2B, and isolation comparison circuit further includes third branch,
Including the resistance R5 and zener diode D2 being connected in series, the positive terminal of amplifier U2B is connected to resistance R5 and zener diode D2
Between route on.
When work, delay locked circuit output voltage, the voltage follow constituted by amplifier U2A in isolation comparison circuit
Circuit is isolated, and is compared later by amplifier U2B with zener diode D2 voltage.Block optical diode in hammer handle whereabouts
When D1 light, U1A exports low level in detection circuit of dropping hammer, and capacitor C1 is gradually discharged by R3, and voltage decreases, and works as voltage
When lower than zener diode D2 voltage, operational amplifier U2B noninverting input voltage in comparison circuit is isolated and is higher than reversed input
Hold voltage, output voltage positive transition.Isolation is compared circuit output voltage positive transition signal and is exported to output signal conditioning circuit.
Output signal conditioning circuit includes the latch U1B being connected with the output end for the amplifier U2B that comparison circuit is isolated,
Latch U1B is sequentially connected with latch U1C；
When work, isolation compares circuit output voltage positive transition signal and passes through latch U1B in output signal conditioning circuit,
Isolation twice after the overturning of latch, is compared circuit output voltage positive transition and exported to solenoid actuated electricity by latch U1C
Road.
Solenoid driver circuit includes photoelectrical coupler U3, the input terminal of photoelectrical coupler U3 be respectively connected to resistance R8,
The common end of resistance R6R7, the output end of photoelectrical coupler U3 are connected to relay coil, and the both ends of relay coil are reversely simultaneously
It is associated with diode D3, one end ground connection of relay normally open contact, the other end and the electromagnet coil L1 and diode D4 that are in parallel
It is connected in series.
When work, the high level that output signal conditioning circuit U1C is generated acts on the base stage of triode Q2, Q3 by R6.
Q3 is connected in high level, Q3 collector and capacitor C1 is clamped on low level namely delay locked circuit output voltage is drawn
It is low, with state consistency when triggering, formed self-locking.With this condition, hammer handle passes through the mistake that bounces after phototriode D1 and again
Cheng Zhong, there is high level and low level variation in U1A output voltage in detection circuit of dropping hammer, since Q3 is in the conductive state, electricity
Hold C1 low level is not influenced by U1A output voltage.Vlock_in is expression identical network (interconnection) in a circuit in figure
Symbol.Vlock_in at two indicates connection.
The high level that output signal conditioning circuit generates drives relay coil by photoelectrical coupler U3, and relay is normal
Open contact closure.Electromagnet coil L1 in insertion curved rod obtains electric, the movable block tongue of uplink after actuation rebound, and is consolidated
It is fixed.
When test next time, is realized and resetted using reset circuit, specifically, reset circuit, reset circuit includes reset switch
And the common end of the capacitor C2 being in parallel with reset switch, reset switch and capacitor C2 are connected to one end of resistance R6, resistance R6
The other end be connected to one end of resistance R7, the other end ground connection of resistance R7.
When work, reset key K1 is pressed, the base stage of triode Q2, Q3 become low level, and capacitor C2 absorbs key K1 operation
When fluctuation pulse, improve operational stability.Q2 is open-minded in delay locked circuit, and Q3 shutdown, capacitor C1 restores high level, locking
It resets, electromagnet loss of excitation.Series resistance R4 reduces the pull-up ability of triode Q2, triode Q3 open after for strong pull-down, pass through
Locking when delay locked circuit is only the base stage high level of triode Q2, Q3 is realized in the cooperation of resistance R4 and resistance R3.
Again pull-off test is hammered into shape, can be tested again.
Examples of implementation two
This embodiment disclose large-scale phase modifier stator winding end dynamic analysis hammer systems, including above-mentioned hammering
Device installs force sensor in the tup of above-mentioned test hammer, and the signal of force sensor measuring is transmitted to multifunctional signal tune
Instrument is managed, the multifunctional signal regulating instrument is connected with laptop, using multifunctional signal regulating instrument to the hammer force of measurement
Signal carry out being processed and transmitted to laptop or host computer is handled or shown.
Case history one
In order to enable those skilled in the art can clearly understand the technical solution of the disclosure, below with reference to tool
The technical solution of the disclosure is described in detail in the embodiment and comparative example of body.
In order to examine Xi Meng ± 800 kilovolt converter station to install No. 1 and No. 2 generator unit windings of phase modifier engineering 300Mvar additional
Whether end dynamic characteristic meets the requirements of the standard, and carries out stator winding end dynamic characteristic test to single unit.Subjects
For phase modifier 300Mvar generator unit winding.
Instrument configuration used in test is shown in Table 1.
List of main equipment is used in the test of table 1
In test, force snesor can be installed on to test hammer tup, detection taps stress, taps instantaneous acceleration.Temperature
The monitoring of hygrometer experimental enviroment.
Test macro includes test hammer, force snesor and signal processing system.
Test carries out dynamic characteristic measuring using hammering method, using excitation, the method for single-point response.Firmly hammer hammering
The point position of stator winding end, while its acceleration responsive is measured with acceleration transducer.Force signal and acceleration signal
Amplify through amplifier, is sent into dynamic signal analyzer and is analyzed, the frequency response function of structure can be obtained.
Test hammer is driven to fall using torque spring,
Hammer bounces locking, and locking herein is to prevent from tapping after hammer bounces falling again, and Yin Dingli taps design, intrinsic bullet
Play the situation fallen again.
The one week mode in end is measured, measuring point number is the number of stator slots of half, takes a measuring point every a bar.
Experimental condition:
Stator winding end Modal Experimental Analysis carries out at room temperature；
Phase modifier shutdown status, rotor are not loaded into stator thorax, and stationary part is all cleaned and finished；
It is that end corresponding windings are numbered according to the slot number where stator top bar:
Phase modifier ontology is without other operations；
Remove phase modulation machine stator two end cover plate.
Test procedure:
Test carries out dynamic characteristic measuring using hammering method.The firmly point position of hammer hammering stator winding end, simultaneously
Its acceleration responsive is measured with acceleration transducer.Force signal and acceleration signal amplify through amplifier, are sent into Dynamic Signal point
Analyzer is analyzed, and the frequency response function of structure is obtained.
Obtained frequency response function is further analyzed with model analysis software appropriate, is fitted, modal parameter can be obtained,
And measure following parameter:
1. the intrinsic frequency of stator winding end phase terminal and main lead, unit hertz (Hz)；
2. the oval Mode Shape and pintongs Mode Shape of stator winding end entirety；
3. response ratio corresponding to stator winding end and lead origin frequency response function intrinsic frequency, unit are as follows: (m/
s2)/N。
Test judgment criteria
The frequency range that the whole oval vibration shape intrinsic frequency of Stator End Winding should be avoided: 95Hz~110Hz；
The frequency range that Stator End Winding lead intrinsic frequency should be avoided: 95Hz~108Hz.
It is unsatisfactory for the measuring point of above-mentioned requirements to lead intrinsic frequency, its origin response ratio, the measurement side of response ratio should be measured
Method is detailed in GB/T 20140-2016 " non-salient pole synchronous phase modifier stator winding end dynamic characteristic and vibration measurement method and evaluation "
In related requirement.The interpretational criteria of response ratio is in the frequency range for needing to avoid, and the response ratio measured is no more than 0.44
(m/s2)/N.For response ratio less than 0.44 (m/s2The measuring point of)/N, can be without processing.Response ratio is greater than or equal to
0.44(m/s2The measuring point of)/N, Ying Jinliang take measures to carry out binding and consolidation process.
The peak response in frequency range avoided required for lead intrinsic frequency is unobvious or is difficult to determine, should measure
Ratio, assessment criteria and processing method are same as described above.
Above-mentioned requirements are unsatisfactory for if it is stator winding end entirety vibration shape intrinsic frequency, it is radial that each bar in end should be measured
Origin response ratio.For response ratio less than 0.44 (m/s2The measuring point of)/N, can be without processing.Response ratio is greater than or equal to
0.44(m/s2The measuring point of)/N, it is proposed that the vibration of stator winding end, assessment criteria are detailed in GB/T 20140- when measurement operation
2016。
Acceleration transducer is fixedly secured on 6 o'clock direction winding overhang with fire-proof mud (or medical adhesive tape)；
When surveying end mode, hammering direction is radial direction, and when surveying lead-out wire intrinsic frequency, hammering direction is radially, axially to cut
To；
Each measurement point continuously measures 4 times and is averaged；
It is clear-cut to act when hammering, and pumping signal is reproducible；
In operating operation test on springboard, in addition to paying attention to personal safety, it should also be prevented from hammer and fall damage；
It should be noted that protecting stator end structural member in test process:
Tested device and other equipment should be without any electrical connections；
Off-test checks that whether there is or not the tool left, conducting wires etc. on tested device: registering all take when into stator thorax
Band tool, out when confirmation take all registration tools out of: be intended to wear without metal button and zipper into the personnel in stator thorax
Professional work clothes, and wear soft basic skill or training's shoes；
When work, stop other operations of phase modifier ontology.
The Mode Shape of major concern 95Hz~110Hz frequency range is tested, therefore the correlation function in the section 80Hz~120Hz must
The hammer force degree and direction for tapping three times when must level off to 1, and measure the more reach unanimity the more good, and (each test point is both needed to percussion three
Secondary value), in actual measurement, each point taps the case where measurement is had no result, institute because tapping bad will lead to of repeatability repeatedly
It is very high with end features test into shape percussion requirement to be hammered to power.
Fig. 5 (a)-Fig. 5 (b) is first group of measurement result in above three groups of measurement results, and Fig. 6 (a)-Fig. 6 (b) is second group
Measurement result, Fig. 7 (a)-Fig. 7 (b) are third group measurement result, wherein first and second group of measurement data is effective, the measurement of third group
Data invalid, correlation function of the third group in the section 80Hz~120Hz are poor.
It is understood that in the description of this specification, reference term " embodiment ", " another embodiment ", " other
The description of embodiment " or " first embodiment~N embodiment " etc. means specific spy described in conjunction with this embodiment or example
Sign, structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned
The schematic representation of term may not refer to the same embodiment or example.Moreover, the specific features of description, structure, material
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
The foregoing is merely preferred embodiment of the present disclosure, are not limited to the disclosure, for the skill of this field
For art personnel, the disclosure can have various modifications and variations.It is all within the spirit and principle of the disclosure, it is made any to repair
Change, equivalent replacement, improvement etc., should be included within the protection scope of the disclosure.
Claims (10)
1. large-scale phase modifier stator winding end dynamic analysis hammering device, characterized in that hammered into shape including test, on test hammer
It is additionally provided with Fixing clamp-seat, the opposite two sides of Fixing clamp-seat are separately installed with movable block tongue；
The test hammer is in the move in tracks being made of two curved rods positioned opposite, the phase of the medial surface of two curved rods
Electromagnet is respectively embedded into position, electromagnet and arc track medial surface are in the same plane；
Using detection and control circuit detect test hammer fall when, by control electromagnet obtain it is electric, be attracted test hammer rebound
Afterwards uplink when positioned at Fixing clamp-seat two sides movable block tongue, and will test hammer fix.
2. large size phase modifier stator winding end dynamic analysis hammering device as described in claim 1, characterized in that institute
Stating test hammer includes tup and hammer handle, and one end of hammer handle connects tup, and the other end is connected by linkage with pedestal, close to hammer
Fixing clamp-seat is provided on the hammer handle of one end of head.
3. large size phase modifier stator winding end dynamic analysis hammering device as claimed in claim 2, characterized in that bottom
Seat is fixed on bottom plate, and torque spring is provided between linkage and hammer handle.
4. large size phase modifier stator winding end dynamic analysis hammering device as claimed in claim 2, characterized in that two
One end of a curved rod is fixed on bottom plate, and the other end of two curved track bars is connected by crossbeam.
5. large size phase modifier stator winding end dynamic analysis hammering device as described in claim 1, characterized in that
The medium position of electromagnet is provided with optoelectronic switch, is provided with scale in a curved rod or two curved rods wherein, mark
It is marked with the maximum position and minimum position of test hammer movement.
6. large size phase modifier stator winding end dynamic analysis hammering device as described in claim 1, characterized in that survey
The position of bottom plate that examination hammer falls offers hole, the hole slightly larger than test hammer tup diameter, tup using the hole fall in
The large-scale phase modifier stator winding end of test.
7. large size phase modifier stator winding end dynamic analysis hammering device as described in claim 1, characterized in that inspection
Survey and control circuit include drop hammer detection circuit, delay locked circuit, isolation comparison circuit, output signal conditioning circuit,
Reset circuit and solenoid driver circuit；
When test hammer falls, detect that test hammer falls using detection circuit of dropping hammer, and will test signal and export to delay locked
Circuit be delayed after output to isolation comparison circuit, realize the isolation of circuit, export later to output signal conditioning circuit into
The conditioning of row signal, output drives relay to solenoid driver circuit after isolation will be compared to circuit output voltage positive transition
Movement, obtains electromagnet coil electric, is attracted the movable block tongue positioned at Fixing clamp-seat two sides of uplink after test hammer rebound,
And it is fixed.
8. large size phase modifier stator winding end dynamic analysis hammering device as described in claim 1, characterized in that hammer
One end that head taps test is provided with rubber pad.
9. the work of large size phase modifier stator winding end dynamic analysis hammering device as claimed in claim 1
Method, characterized in that include:
Certain angle, torque spring energy storage are hammered into shape along hammer handle hinge pull-off test；
Test hammer is unclamped, test hammer falls under torque spring driving；
After percussion, test hammer is bounced, and when movable block tongue passes through electromagnet, the installation of Fixing clamp-seat two sides is sucked out in electromagnet action
Movable block tongue；
Movable block tongue is stuck with electromagnet, and locking test hammer downward movement realizes that test hammer single falls, and fixed torsion strikes
It hits.
10. large-scale phase modifier stator winding end dynamic analysis hammer systems, characterized in that appoint including claim 108
Hammering device described in one, multifunctional signal regulating instrument and host computer install force sensor in the test lead of the test hammer,
The signal of the force sensor measuring is transmitted to multifunctional signal regulating instrument and carries out signal processing, and multifunctional signal regulating instrument will be located
Signal after reason is transmitted to host computer and is analyzed.
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| CN201910355586.6A CN110208117B (en) | 2019-04-29 | 2019-04-29 | Hammering device, system and method for analyzing dynamic characteristics of stator winding end part of large phase modulator |
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