CN208999082U - Torsional Vibration of Turbine Generator Rotor and fault simulation multi-function test stand - Google Patents
Torsional Vibration of Turbine Generator Rotor and fault simulation multi-function test stand Download PDFInfo
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- CN208999082U CN208999082U CN201821805188.7U CN201821805188U CN208999082U CN 208999082 U CN208999082 U CN 208999082U CN 201821805188 U CN201821805188 U CN 201821805188U CN 208999082 U CN208999082 U CN 208999082U
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- rotor
- vibration
- torsional vibration
- fault simulation
- turbine generator
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Abstract
The utility model discloses a kind of Torsional Vibration of Turbine Generator Rotor and fault simulation multi-function test stand.The utility model includes rack pedestal, trial body device, measuring system and power and control system；The trial body device is mounted on rack pedestal, including quality wheel disc, leaf grating, sliding bearing bracket, flexible coupling, positive coupling, touches mill test bracket and multiple rotors；Multiple rotors are supported by sliding bearing bracket, are connected between each rotor by positive coupling, quality wheel disc and leaf grating are mounted on the rotor；The power and control system includes servo motor, generator and load control casing, and servo motor is mounted on rack pedestal with generator and is connect respectively with the spliced both ends of multiple rotors by flexible coupling, guarantees centering.The utility model makes up the shortcomings that conventional rotors testing stand has a single function, and integrates torsional oscillation, rotor fault simulation multifunctional, provides convenience to study multiple fault signatures.
Description
Technical field
The utility model belongs to Testing of Turbo-generator field, specifically a kind of Torsional Vibration of Turbine Generator Rotor and event
Hinder simulation multifunctional testing stand.
Background technique
Rotor-support-foundation system is the important component of rotating machinery, and meaning is easy to appear in manufacture, operation and its maintenance process
Outside, there are various fault state, failure influences equipment safety；And cross sections are due to carrying turn when large turbo-type generator operation
Square difference generates angular displacement.Recently as the increase of single-machine capacity, the multiplicity of the high capacity of power transmission network and electric load
Change, the accident that the coupling of machine net induces shafting torsional oscillation is increasingly frequent.
Distortion is generated when generator unit shaft system torsional oscillation can cause unit to run at coupling of shaft system, shafting fatigability is caused to damage
Bad, shafting torsional oscillation long-term accumulated even causes rotor rupture, seriously affects unit safety.The a lot of shafting torsional oscillations occurred both at home and abroad
Caused unit damages accident, causes serious financial consequences.
The existing shafting research for steam turbine generator largely lays particular emphasis on theory analysis.Since shafting torsional oscillation designs electricity
Multiple subjects such as power, material, mechanics, and shafting boundary condition is complicated at runtime, leads to computer sim- ulation and physical presence very
Large deviation seriously affects the research of shaft safety.
Existing rotor oscillation simulator stand stresses vibration test under different faults mostly, has a single function, and at present
Lack the pilot system of shafting torsional oscillation.
Utility model content
For above-mentioned prior art defect or Improvement requirement, the utility model provides a kind of rotor torsion oscillation of steam turbine generator
With fault simulation multi-function test stand, a variety of tests, including uneven, lower margin can be carried out to Vibration Condition under different faults
It loosens, touch situations such as mill；A variety of tests can be carried out with shaft torsional oscillation, such as simulate shafting torsional oscillation under different electric network faults, no
With the influence of shafting torsional oscillation, rotor crack, leaf grating to rotor torsion oscillation under shaft coupling connection.
To achieve the above object, the technical solution adopted in the utility model are as follows: Torsional Vibration of Turbine Generator Rotor and failure mould
Quasi- multi-function test stand comprising rack pedestal, trial body device, measuring system and power and control system；
The trial body device is mounted on rack pedestal, including quality wheel disc, leaf grating, sliding bearing bracket, is scratched
Property shaft coupling, positive coupling, touch mill test bracket and multiple rotors；Multiple rotors pass through sliding bearing bracket branch
It supports, is connected between each rotor by positive coupling, quality wheel disc and leaf grating are mounted on the rotor；
The measuring system includes Vibration-Measuring System and torsional vibration measurement system, and Vibration-Measuring System includes tachometric survey
Device and vibration displacement measuring appliance, torsional vibration measurement system include torsional vibration measurement gear and the magnetic for measuring torsional vibration measurement gear rotational speed
Electric-type sensor, the torsional vibration measurement gear are mounted on the rotor；
The power and control system includes servo motor, generator and load control casing, servo motor and generator
It is mounted on rack pedestal and is connect respectively with the spliced both ends of multiple rotors by flexible coupling, guarantee centering；It is negative
Lotus control cabinet is used to control the work of generator, and servo motor is for driving rotor to rotate.
Single-point can be carried out by touching mill test bracket, multiple spot touches mill test.Lower margin pine is carried out by sliding bearing bracket
Dynamic, rigidity deficiency test.Mass unbalance test is carried out by quality wheel disc.Can be installed on the rotor different-diameter,
The quality wheel disc of thickness, quality, quality of research wheel diameter size, wheel disc thickness, different quality are to the shadow of rotor torsion oscillation frequency
It rings.
The test of shafting torsional oscillation under different load is realized by load control casing.Load control casing can pass through short switch
The test such as phase fault, shorted to earth, reclosing is got rid of in realization.
When rotor is by torsional excitation, torsional vibration measurement gear transient speed generates fluctuation, and magnetoelectric sensor records not
Uniform carrier wave obtains torsional oscillation angular displacement signal, solves torsional oscillation angular displacement curve, obtain torsion frequency and amplitude.
It can make sliding bearing bracket and touch to grind test bracket at it as being equipped on further preferred, described rack pedestal
The sliding rail of upper axial movement, the sliding bearing bracket are fixed by screws on rack pedestal with mill test bracket is touched.It is logical
Cross situations such as adjustment rack pedestal screwing tightness simulation foundation bolt loosens, ground rigidity is insufficient.The sliding axle
Holding bracket can move axially along sliding rail, adjust the distance between each sliding bearing, and the support for meeting different shafting length is wanted
It asks.
As further preferred, described sliding bearing bracket for placing sliding bearing, through top bearing cover under
Bearing (ball) cover is fixed on sliding bearing bracket, and top bearing cover is equipped with X-direction vibration probe and Y-direction vibration probe, described
X-direction vibration probe and Y-direction vibration probe in be equipped with vibration displacement measuring appliance.
It is photoelectric sensor as further preferred, described tachometric survey device, the vibration displacement measuring appliance is electricity
Eddy current sensor, the current vortex sensor are installed in X-direction vibration probe and Y-direction vibration probe, the photoelectricity
Sensor and magnetoelectric sensor are separately mounted on a sensor stand, and sensor stand is installed on the slide rail.
It is mounted on bushing as further preferred, described quality wheel disc, bushing is fixed on rotor by positioning bolt
On.Mobile bushing, position of the adjustable quality wheel disc on rotor adjust rotor vibration model and critical speed, test shafting vibration
The variation of type and its torsional oscillation vibration frequency.
As further preferred, quality wheel disc is equipped with multiple uneven holes, and different quality spiral shell is installed in uneven hole
Bolt carries out mass unbalance test.
Multiple mounting holes are equipped with as further preferred, the described mill test bracket that touches, the mounting hole is for putting
Brass bolt is set, single-point can be simulated and touch mill and situations such as multiple spot touches mill, analysis of experiments is carried out to Torsion Coupling in rub-impact.
As installed on further preferred, described rotor multiple leaf gratings positioned at different location and it is multiple be located at different positions
The quality wheel disc set.
As multiple prismatic blades or/and twisted blade is equipped on further preferred, described leaf grating, the length of blade is not
One, the torsional vibration measurement gear and leaf grating are mounted on the rotor by bushing, and are bolted on rotor.Pass through
Different leaf grating-rotator models is established, influencing each other between leaf grating and rotor torsion oscillation is tested.To leaf grating and shafting vibration and coupling
It closes situation to be tested, analyzes different number shafting vibration frequency variations.The vibration shape before and after shaft installation leaf grating is analyzed,
Study the influence of leaf grating shaft torsional oscillation.
It is deformation rotor or cracked rotor, test crackle, deformation and its not similar shape as further preferred, described rotor
Influence of the formula rotor diameter of axle to vibration.
Compared with prior art, the utility model has technical effect below:
The testing stand of the utility model integrates a variety of turns of torsional oscillation, mass unbalance, lower margin loosening, Rub-impact dynamic balancing etc.
Sub- fault simulating function compensates for the deficiency of traditional vibration-testing testing stand, provides convenience for research various faults.
The testing stand of the utility model can be with the impact of shaft torsional oscillation under simulating grid failure；Testing stand, which can be tested, to be turned
Sub- crackle, different coupler structure, different cascade structures, different leaf gratings and shafting coupling state, different shafting structure lower rotor parts
Torsion frequency.
Detailed description of the invention
Fig. 1 is rotor torsion oscillation and the structural representation of fault simulation multi-function test stand of the steam turbine generator of the utility model
Figure；
Fig. 2 is the sliding bearing support schematic diagram of the utility model；
Fig. 3 is that touching for the utility model grinds stented test device figure；
Fig. 4 is the utility model quality wheeling disk structure schematic diagram；
Fig. 5 is the utility model bush structure schematic diagram；
Fig. 6 is the utility model torsional vibration measurement gear and bushing mounting structure schematic diagram；
Fig. 7 is the utility model cascade structure schematic diagram；
Flow diagram when Fig. 8 is the utility model test.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.In addition, institute in the various embodiments of the present invention described below
The technical characteristic being related to can be combined with each other as long as they do not conflict with each other.
As shown in figs. 1-7, the multifunction test of a kind of Torsional Vibration of Turbine Generator Rotor and fault simulation of the utility model
Platform mainly includes trial body device, measuring system, power and control system, vibration test under different faults may be implemented
It is tested with shafting torsional oscillation.
The key component to the utility model is subjected to more specific detail one by one below.
One of key component as the utility model, trial body device are mounted on rack pedestal 0 comprising flexible
Shaft coupling 3, sliding bearing bracket 5, wheel disc 6, leaf grating 12, positive coupling 7, touches mill test bracket 11 at rotor 4.Rotor 4 passes through
Sliding bearing bracket 5 supports, and multiple rotors 4 are linked together by positive coupling 7.Servo motor 9, generator 10 are by scratching
Property shaft coupling 3 connect with rotor 4, guarantee centering.Sliding bearing bracket 5 can move on sliding rail 8, and it is long to meet different shaftings
It spends, the demand of single support, dual-gripper, is fixed by screws on pedestal.By adjusting the elasticity of screw when test, experimental field
Foot bolt loosens the influence to vibration.
Quality wheel disc 6 is mounted on bushing 61, together with bushing 61 is connected by screw to quality wheel disc, then using fixed
Quality wheel disc 6 is fixed on rotor 4 by position screw.Different quality, diameter, thickness quality wheel disc 6 be mounted on the different positions of rotor 4
It sets, the influence of quality of research wheel diameter size, wheel disc thickness, different quality to rotor torsion oscillation frequency.Adjust the position of wheel disc 6
It sets, type corresponds to the generating set of different model.There are uneven hole 62, the uneven caused vibration of test mass on quality wheel disc
It is dynamic.Adjust the tightness of positioning screw, model rotor loosening test.
It touches mill test bracket 11 to be mounted on sliding rail 8, be fixed by screws on rack pedestal.Touch the peace on mill bracket 11
It fills and brass bolt is installed in hole 111, test multiple spot, single-point touch mill.
The sliding bearing bracket is fixed on cunning by top bearing cover and lower bearing end cap for placing sliding bearing
On dynamic bearing bracket, top bearing cover is equipped with X-direction vibration probe and Y-direction vibration probe.Sliding bearing bracket 5 passes through screw
It can be fixed on the different location of sliding rail 8.
Different positive couplings 7 is replaced, influence of the different Type for Coupling to rotor torsion oscillation is simulated.Rotor 4 is changed to
Cracked rotor tests the influence of crackle shaft torsional oscillation.
Leaf grating can be installed on rotor, leaf grating can install different types of blade, simulation blade-shafting coupled vibrations,
And its influence of leaf grating shaft torsional oscillation vibration frequency.
As another component of the utility model, Vibration-Measuring System includes tachometric survey device and vibration displacement measuring appliance,
Tachometric survey device uses photoelectric sensor, and vibration displacement measuring appliance uses current vortex sensor, and measuring instrument uses bently408
Rotor vibration displacement, measurement revolving speed are measured, while obtaining the situation of change of orbit of shaft center and shaft core position.Current vortex passes
In sensor installation X, Y-direction vibration probe, photoelectric sensor is mounted on sensor stand 13, and sensor stand is mounted on sliding rail
On.
Torsional vibration measurement gear 1 is mounted on bushing, is mounted on the rotor by bushing, so as to the torsion to different location
Vibration signal is analyzed.The torsional vibration measurement of torsional vibration measurement gear uses magnetoelectric sensor.Magnetoelectric sensor is mounted on sensing
On device bracket 13, the adjustable height on bracket, and its position on the slide rail, the signal of torsional vibration measurement gear is acquired,
Meets the needs of torsional vibration measurement.Magnetoelectric sensor passes through torsional oscillation angular displacement signal input signal processor and data collecting card
AZ308 Analysis of Torsional Vibration system is inputted after ovennodulation, is analyzed to obtain spectrogram, obtains torsion frequency.
As another component of the utility model, the servo motor 9 in dynamical system drives rotor 4 to rotate, servo motor
Equipped with driver, revolving speed can be adjusted with manual motor, carry out vibration, torsional test under different rotating speeds.Generator 10 and load control
Cabinet 2 processed connects, and the adjustable load of load control casing, angle of rotor measures when to load fluctuation.In addition, load control casing
2 can carry out the test such as removal of load, phase fault, shorted to earth, reclosing.
Vibration testing method under the various faults carried out using above-mentioned multi-function test stand, operating method are as follows:
Trial body device, dynamical system and measuring system are installed on rack pedestal 0 first, each test parts are logical
It crosses shaft coupling etc. to connect, be supported by sliding bearing bracket, quality wheel disc, torsional vibration measurement gear are mounted on the rotor, and solid
It is scheduled at corresponding position.
Then it is tested, including shafting vibration test and shafting torsional oscillation test, as shown in Figure 8.
The shafting vibration is tested
1) position of the adjustment quality wheel disc on rotor, quality, diameter and thickness adjust rotor vibration model and critical speed,
Install bolt, the test of analog-quality imbalance in uneven hole on quality wheel disc additional；
2) sliding bearing bracket is moved axially along sliding rail, and adjustable range meets the support requirement of different shafting length；Pass through
The loosening of screw tightness simulation foundation bolt, the ground rigidity deficiency test of sliding bearing bracket are fixed on rack pedestal；
3) it touches on mill test bracket and brass bolt is installed, carry out multiple spot, single-point touches mill test；Mill test branch is touched by mobile
Frame carries out different location and touches mill test；
4) failure sliding bearing is placed in sliding bearing bracket, simulates influence of the sliding bearing failure to vibration；
5) vibration data is acquired, computer is inputted, vibration map is obtained by AZ308 Analysis of Torsional Vibration system；
The shafting torsional oscillation is tested
1) quality, position, the diameter and thickness for adjusting quality wheel disc, obtain different generator amature types, to difference
The vibration of rotor model lower axle system torsional oscillation measures；
2) rotor is changed to cracked rotor, under simulation test rotor different angle crackle, different depth cracks, shafting
The situation of change of torsion frequency；It adjusts rotor length, change diameter of axle structure, simulate torsional oscillation situation in the case of different shaftings；
3) rotor installs leaf grating additional, establishes leaf grating-shafting coupling test system, and analysis of experiments difference number and cascade blade are disconnected
Split the influence of shaft vibration frequency；The vibration shape before and after shaft installation leaf grating is analyzed simultaneously, and research leaf grating shaft is turned round
The influence of vibration；
4) Type for Coupling is replaced, torsional vibration frequency under different shaft coupling connection status is tested；
5) after testing stand revolving speed reaches 3000r/min, different load is taken, is tested；Then band carries out afterwards at full capacity
Load dump test；Different short circuit durations is set and carries out short-circuit test.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (10)
1. Torsional Vibration of Turbine Generator Rotor and fault simulation multi-function test stand, which is characterized in that including rack pedestal (0), examination
Test agent set, measuring system and power and control system；
The trial body device is mounted on rack pedestal (0), including quality wheel disc (6), leaf grating (12), sliding bearing branch
Frame (5), positive coupling (7), touches mill test bracket (11) and multiple rotors (4) at flexible coupling (3)；Described multiple turns
Sub (4) are supported by sliding bearing bracket (5), are connected between each rotor (4) by positive coupling (7), quality wheel disc (6)
It is mounted on rotor (4) with leaf grating (12)；
The measuring system includes Vibration-Measuring System and torsional vibration measurement system, Vibration-Measuring System include tachometric survey device and
Vibration displacement measuring appliance, torsional vibration measurement system include torsional vibration measurement gear (1) and for measuring torsional vibration measurement gear (1) revolving speed
Magnetoelectric sensor, the torsional vibration measurement gear (1) are mounted on rotor (4)；
The power and control system includes servo motor (9), generator (10) and load control casing (2), servo motor (9)
It is mounted on rack pedestal (0) with generator (10) and spliced with multiple rotors (4) respectively by flexible coupling (3)
Both ends connection, guarantees centering；Load control casing (2) is used to control the work of generator (10), and servo motor (9) is used for band turn
Son rotation.
2. Torsional Vibration of Turbine Generator Rotor as described in claim 1 and fault simulation multi-function test stand, which is characterized in that institute
Sliding bearing bracket (5) can be made and touch to grind the cunning that test bracket (11) move axially on it by being equipped on the rack pedestal (0) stated
Rail (8), the sliding bearing bracket (5) and touch mill test bracket (11) be fixed by screws on rack pedestal (0).
3. Torsional Vibration of Turbine Generator Rotor as claimed in claim 2 and fault simulation multi-function test stand, which is characterized in that institute
The sliding bearing bracket (5) stated is fixed on sliding bearing by top bearing cover and lower bearing end cap for placing sliding bearing
On bracket (5), top bearing cover is equipped with X-direction vibration probe and Y-direction vibration probe, the X-direction vibration probe and the side Y
Vibration displacement measuring appliance is housed into vibration probe.
4. Torsional Vibration of Turbine Generator Rotor as claimed in claim 3 and fault simulation multi-function test stand, which is characterized in that institute
The tachometric survey device stated is photoelectric sensor, and the vibration displacement measuring appliance is current vortex sensor, and the current vortex passes
Sensor is installed in X-direction vibration probe and Y-direction vibration probe, and the photoelectric sensor and magnetoelectric sensor are pacified respectively
On a sensor stand (13), sensor stand (13) is mounted on sliding rail (8).
5. Torsional Vibration of Turbine Generator Rotor according to any one of claims 1-4 and fault simulation multi-function test stand, special
Sign is that the quality wheel disc (6) is mounted on bushing (61), and bushing (61) is fixed on rotor (4) by positioning bolt.
6. Torsional Vibration of Turbine Generator Rotor according to any one of claims 1-4 and fault simulation multi-function test stand, special
Sign is, quality wheel disc (6) is equipped with multiple uneven holes (62), in uneven hole (62) installation different quality bolt come into
Row mass unbalance test.
7. Torsional Vibration of Turbine Generator Rotor according to any one of claims 1-4 and fault simulation multi-function test stand, special
Sign is that mill test bracket (11) that touches is equipped with multiple mounting holes (111), and the mounting hole (111) is for placing
Brass bolt.
8. Torsional Vibration of Turbine Generator Rotor according to any one of claims 1-4 and fault simulation multi-function test stand, special
Sign is, multiple leaf gratings (12) positioned at different location and multiple quality positioned at different location are installed on the rotor (4)
Wheel disc (6).
9. Torsional Vibration of Turbine Generator Rotor according to any one of claims 1-4 and fault simulation multi-function test stand, special
Sign is, multiple prismatic blades or/and twisted blade is housed, the length of blade is different, the torsional oscillation on the leaf grating (12)
Measurement gear and leaf grating are mounted on the rotor by bushing, and are bolted on rotor.
10. Torsional Vibration of Turbine Generator Rotor according to any one of claims 1-4 and fault simulation multi-function test stand, special
Sign is that the rotor (4) is deformation rotor or cracked rotor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821805188.7U CN208999082U (en) | 2018-11-02 | 2018-11-02 | Torsional Vibration of Turbine Generator Rotor and fault simulation multi-function test stand |
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| CN201821805188.7U CN208999082U (en) | 2018-11-02 | 2018-11-02 | Torsional Vibration of Turbine Generator Rotor and fault simulation multi-function test stand |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374273A (en) * | 2018-11-02 | 2019-02-22 | 国网浙江省电力有限公司电力科学研究院 | Torsional Vibration of Turbine Generator Rotor and fault simulation multi-function test stand and test method |
| CN113758717A (en) * | 2021-09-10 | 2021-12-07 | 中国航发湖南动力机械研究所 | Combined type rigidity test support |
| CN114877019A (en) * | 2022-05-11 | 2022-08-09 | 东北大学 | Be used to and hold metamaterial isolator for rotor system torsional oscillation restraines |
-
2018
- 2018-11-02 CN CN201821805188.7U patent/CN208999082U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374273A (en) * | 2018-11-02 | 2019-02-22 | 国网浙江省电力有限公司电力科学研究院 | Torsional Vibration of Turbine Generator Rotor and fault simulation multi-function test stand and test method |
| CN113758717A (en) * | 2021-09-10 | 2021-12-07 | 中国航发湖南动力机械研究所 | Combined type rigidity test support |
| CN114877019A (en) * | 2022-05-11 | 2022-08-09 | 东北大学 | Be used to and hold metamaterial isolator for rotor system torsional oscillation restraines |
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