CN110617919A - On-site double-sided dynamic balancing method based on comprehensive counterweight proportionality coefficient - Google Patents
On-site double-sided dynamic balancing method based on comprehensive counterweight proportionality coefficient Download PDFInfo
- Publication number
- CN110617919A CN110617919A CN201910237519.4A CN201910237519A CN110617919A CN 110617919 A CN110617919 A CN 110617919A CN 201910237519 A CN201910237519 A CN 201910237519A CN 110617919 A CN110617919 A CN 110617919A
- Authority
- CN
- China
- Prior art keywords
- balance
- rotor
- comprehensive
- counterweight
- vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/14—Determining unbalance
- G01M1/16—Determining unbalance by oscillating or rotating the body to be tested
Abstract
The invention discloses a field double-sided dynamic balancing method based on comprehensive balance weight proportionality coefficients, which comprises the steps of measuring the original vibration and the weighted vibration of bearings at two ends, obtaining the comprehensive weighted proportionality coefficients of two balance faces through the influence coefficients and the balance weight proportionality coefficients of the two balance faces, and further obtaining the continuous weighted weight of the two balance faces. The method is suitable for symmetrical rotors and asymmetrical rotors, and compared with an influence coefficient method, the method can effectively reduce the starting times; compared with a harmonic component method, the method expands the application range of field dynamic balance.
Description
Technical Field
The invention belongs to the technical field of fault treatment of rotating equipment, and particularly relates to a field double-sided dynamic balancing method based on comprehensive counterweight proportionality coefficients.
Background
In the operation of the rotary machine, the set faults caused by poor dynamic balance are quite a part of the faults that the two ends of the rotor vibrate greatly and the double-sided dynamic balance is needed to be carried out. In field dynamic balancing work, the influence coefficient method is most commonly used. The method is simple to operate and convenient to calculate, dynamic characteristics of a rotor supporting system are not considered too much, requirements on field operators are not high, and therefore the method is widely applied, for a rotor with large vibration at two ends, if a double-sided dynamic balance method is adopted, starting is at least required for four times, for a large rotor, the cost of starting once is high, and the starting times are required to be reduced as far as possible during field dynamic balance. The other method is a harmonic component method, which is a method for balancing according to the vibration mode of the rotor, the harmonic component method is applied, the double-sided dynamic balance of the rotor can be completed only by starting the machine three times, but the dynamic characteristics of the rotor must be considered when the harmonic component method is applied for balancing, and the orthogonality precondition must be satisfied, namely: the symmetrical form emphasis affects only the symmetrical component of the vibration signal and the anti-symmetrical form emphasis affects only the anti-symmetrical component of the vibration signal, which do not interfere with each other, i.e., the rotor must be a symmetrical rotor. If this precondition is not satisfied, i.e. for an asymmetric rotor, the harmonic component method cannot be applied, and forcing to apply the harmonic component method causes a large calculation error.
Disclosure of Invention
The invention aims to provide a brand-new on-site double-sided dynamic balance method based on an integrated counterweight proportion coefficient, so that the application range of on-site dynamic balance is widened, and the startup times are effectively reduced.
A field double-sided dynamic balancing method based on comprehensive counterweight proportionality coefficients comprises the following steps:
step 1, starting a rotor to a working rotating speed, and measuring initial vibration values of bearings at two ends
Step 2, stopping the machine, and adding weight to the balance surfaces on two sides of the rotorThe two weighted weights are regarded as a whole unit vector 1 & lt 0 DEG;
step 3, starting the rotor to the same rotating speed in the step 1, and measuring the vibration value of the weighted bearings at the two ends
Step 4, by
Obtaining the influence coefficients of two balance surfaces
Step 5, by
Obtaining a counterweight proportion coefficient;
step 6, the formula (1) and the formula (2) are used
Obtaining the comprehensive weighting proportion coefficient of two balance surfacesIncluding a numerical valueAnd phase
Step 7, by
To obtain the continuous weight of two balance surfaces
Further, the parameters in the steps are all vectors, and the calculation process follows a vector algorithm.
Further, the vibration value includes a vibration amplitude and a phase.
Further, the rotor may comprise a symmetrical rotor or an asymmetrical rotor.
Further, in step 6Andthe angle therebetween takes a value of less than 180 deg..
Compared with the prior art, the invention has the beneficial effects that:
1. compared with an influence coefficient method, the double-sided dynamic balance work can be completed only by starting up for three times, so that the field workload can be greatly reduced, and the cost is reduced.
2. The method has wide application range, covers all rotating mechanical rotors, is not limited by the dynamic characteristics of the rotors, can carry out on-site dynamic balance by the method regardless of whether the rotors are symmetrical rotors or asymmetrical rotors and whether different vibration modes of the rotors have orthogonal relation or not.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention;
FIG. 2 is a vector diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A field double-sided dynamic balancing method based on comprehensive counterweight proportionality coefficients comprises the following steps:
step 1, starting a rotor to a working rotating speed, and measuring initial vibration values of bearings at two ends
The method comprises the steps of firstly starting a rotor to work rotating speed, and measuring after the device is stabilized, wherein the rotor comprises a symmetrical rotor and a symmetrical rotor, and the vibration value comprises the vibration amplitude and the phase of bearings at two ends.
Step 2, stopping the machine, and adding weight to the balance surfaces on two sides of the rotorThe two weighted weights are regarded as a whole unit vector 1 & lt 0 DEG;
step 3, starting the rotor to the same rotating speed in the step 1, and measuring the vibration value of the weighted bearings at the two ends
Step 4, by
Obtaining the influence coefficients of two balance surfaces
Step 5, by
Obtaining a counterweight proportion coefficient;
step 6, the formula (1) and the formula (2) are used
Obtaining the comprehensive weighting proportion coefficient of two balance surfacesIncluding a numerical valueAnd phaseWhereinAndthe angle between must take a value of less than 180 deg. to be calculated, for example, assumingAndare 30 deg. and 330 deg., respectively, and the angle between them should be 60 deg. instead of 300 deg., so that here it must first be takenThe angle of (1) can be substituted into-30 degrees for calculation.
Step 7, by
To obtain the continuous weight of two balance surfaces
Example (b):
step 1, starting the rotor to a working rotating speed, wherein the working rotating speed of the device in the embodiment is 3000r/min, and measuring to obtain an initial vibration value at two ends of a certain unit after the rotor is stabilized
Step 2, stopping the machine, and simultaneously weighting two balance surfaces on two sides of the rotor, wherein And will beThe vector is regarded as a unit vector 1 & lt 0 DEG;
step 3, starting the rotor again to 3000r/min, and measuring the vibration of the bearings at the two ends after the weight is added
Step 4, calculating the aggravation influence coefficient
Step 5, reserving the previous counterweight, and calculating a counterweight proportion coefficient:
step 6, calculating the comprehensive continuous weighting proportion coefficient of the two balance surfaces
WhereinIs set to-26,is carried in between-26 DEG and 8 DEG
To obtain
And 7, calculating the continuous weighting quantities of the two balance surfaces:
the continuous weight of the two balance surfaces is 10.3g & lt 302.6 & gt and 6.87g & lt 242.6 & gt respectively, so that the field dynamic balance calculation is completed.
Claims (5)
1. A field double-sided dynamic balance method based on comprehensive counterweight proportionality coefficients is characterized by comprising the following steps:
step 1, starting a rotor to a working rotating speed, and measuring initial vibration values of bearings at two ends
Step 2, stopping the machine, and adding weight to the balance surfaces on two sides of the rotorThe two weighted weights are regarded as a whole unit vector 1 & lt 0 DEG;
step 3, starting the rotor to the same rotating speed in the step 1, and measuring the vibration value of the weighted bearings at the two ends
Step 4, by
Obtaining the influence coefficients of two balance surfaces
Step 5, by
Obtaining a counterweight proportion coefficient;
step 6, the formula (1) and the formula (2) are used
Obtaining the comprehensive weighting proportion coefficient of two balance surfacesIncluding a numerical valueAnd phase
Step 7, by
To obtain the continuous weight of two balance surfaces
2. The method of claim 1, wherein the parameters in the step are all vectors, and the calculation process follows a vector algorithm.
3. The method of claim 1, wherein the vibration values include vibration amplitude and phase.
4. The method as claimed in claim 1, wherein the rotors include a symmetrical rotor and an asymmetrical rotor.
5. The field double-sided dynamic balancing method based on comprehensive counterweight proportionality coefficients as claimed in claim 1, wherein in step 6Andthe angle therebetween takes a value of less than 180 deg..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910237519.4A CN110617919A (en) | 2019-03-27 | 2019-03-27 | On-site double-sided dynamic balancing method based on comprehensive counterweight proportionality coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910237519.4A CN110617919A (en) | 2019-03-27 | 2019-03-27 | On-site double-sided dynamic balancing method based on comprehensive counterweight proportionality coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110617919A true CN110617919A (en) | 2019-12-27 |
Family
ID=68921226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910237519.4A Pending CN110617919A (en) | 2019-03-27 | 2019-03-27 | On-site double-sided dynamic balancing method based on comprehensive counterweight proportionality coefficient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110617919A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111898238A (en) * | 2020-06-09 | 2020-11-06 | 天津大学 | Constraint high-speed dynamic balance mechanics resolving method |
| CN112082696A (en) * | 2020-08-28 | 2020-12-15 | 华北电力科学研究院有限责任公司 | Dynamic balancing method and device for rotary machine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1191307A (en) * | 1997-11-05 | 1998-08-26 | 西安交通大学 | Rotor holographic dynamic balance method |
| CN102445305A (en) * | 2011-09-23 | 2012-05-09 | 哈尔滨汽轮机厂有限责任公司 | Test-bed balance adjustment method for HP-IP rotor of 600 MW steam turbine |
| CN104165729A (en) * | 2014-01-20 | 2014-11-26 | 西安电子科技大学 | Dynamic balancing method for high-speed rotors |
| CN104634509A (en) * | 2015-03-04 | 2015-05-20 | 大唐长春第二热电有限责任公司 | Method for acquiring dynamic balance coefficient of rotor |
| CN105403364A (en) * | 2015-12-03 | 2016-03-16 | 天津大学 | Dual-trail-weight balancing method of asymmetric rotor |
| CN105890843A (en) * | 2016-04-18 | 2016-08-24 | 神华集团有限责任公司 | Dynamic balance method and dynamic balance device |
| CN106289645A (en) * | 2016-11-07 | 2017-01-04 | 北京东方振动和噪声技术研究所 | Rotor dynamic balancing assay method based on steady stimulation method and device |
| CN108801550A (en) * | 2017-04-26 | 2018-11-13 | 江铃汽车股份有限公司 | A kind of equivalent uneven test method of automotive transmission |
-
2019
- 2019-03-27 CN CN201910237519.4A patent/CN110617919A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1191307A (en) * | 1997-11-05 | 1998-08-26 | 西安交通大学 | Rotor holographic dynamic balance method |
| CN102445305A (en) * | 2011-09-23 | 2012-05-09 | 哈尔滨汽轮机厂有限责任公司 | Test-bed balance adjustment method for HP-IP rotor of 600 MW steam turbine |
| CN104165729A (en) * | 2014-01-20 | 2014-11-26 | 西安电子科技大学 | Dynamic balancing method for high-speed rotors |
| CN104634509A (en) * | 2015-03-04 | 2015-05-20 | 大唐长春第二热电有限责任公司 | Method for acquiring dynamic balance coefficient of rotor |
| CN105403364A (en) * | 2015-12-03 | 2016-03-16 | 天津大学 | Dual-trail-weight balancing method of asymmetric rotor |
| CN105890843A (en) * | 2016-04-18 | 2016-08-24 | 神华集团有限责任公司 | Dynamic balance method and dynamic balance device |
| CN106289645A (en) * | 2016-11-07 | 2017-01-04 | 北京东方振动和噪声技术研究所 | Rotor dynamic balancing assay method based on steady stimulation method and device |
| CN108801550A (en) * | 2017-04-26 | 2018-11-13 | 江铃汽车股份有限公司 | A kind of equivalent uneven test method of automotive transmission |
Non-Patent Citations (1)
| Title |
|---|
| 鹿守杭: ""基于谐分量法的灵活变通现场动平衡方法"", 《冶金设备》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111898238A (en) * | 2020-06-09 | 2020-11-06 | 天津大学 | Constraint high-speed dynamic balance mechanics resolving method |
| CN111898238B (en) * | 2020-06-09 | 2022-09-27 | 天津大学 | Constraint high-speed dynamic balance mechanics resolving method |
| CN112082696A (en) * | 2020-08-28 | 2020-12-15 | 华北电力科学研究院有限责任公司 | Dynamic balancing method and device for rotary machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Karimi-Ghartemani et al. | Processing of symmetrical components in time-domain | |
| CN110932319B (en) | Method and system for inhibiting subsynchronous oscillation of doubly-fed wind turbine generator | |
| CN110617919A (en) | On-site double-sided dynamic balancing method based on comprehensive counterweight proportionality coefficient | |
| CN110880895B (en) | Method for determining q-axis current compensation value of permanent magnet synchronous motor and method for suppressing pulsation | |
| CN103925979B (en) | The method and apparatus that washing machine undergarment is weighed | |
| CN110661273A (en) | Damping control method and system for inhibiting low-frequency oscillation and subsynchronous oscillation | |
| Dyer et al. | Adaptive influence coefficient control of single-plane active balancing systems for rotating machinery | |
| Quan et al. | A concise discrete adaptive filter for frequency estimation under distorted three-phase voltage | |
| CN107064616B (en) | A kind of compressor realtime power determines method | |
| Zhai et al. | Influence of cutting parameters on force coefficients and stability in plunge milling | |
| CN114280363A (en) | Power grid frequency detection method and device and power grid frequency adjustment method and device | |
| CN111898238B (en) | Constraint high-speed dynamic balance mechanics resolving method | |
| CN115541115B (en) | Electromagnetic automatic balance system, automatic balance control method and device | |
| CN110048442B (en) | Differential smooth nonlinear control method and device for modular multilevel converter | |
| CN113029436B (en) | Method for dynamically balancing long shaft of three-cylinder two-exhaust 200MW steam turbine generator assembly | |
| CN110161371B (en) | Electric power system oscillation source positioning method based on negative damping torque | |
| CN106768260B (en) | It can inhibit the vibration signal maximum power frequency component real time detection algorithm of direct current disturbance | |
| Ludwig et al. | A feasibility study of on-line excitation system parameter estimation | |
| Bliznyuk et al. | Defining the damping properties of synchronous generator using disturbance measurements | |
| JPH09280250A (en) | Balancer and over spin device | |
| CN113418656A (en) | Dynamic balance implementation method of rotating equipment | |
| Gao et al. | Resonance speed measurement of high-speed spindle using an instruction-domain-based approach | |
| JPH06331479A (en) | Rotor vibration analyzer | |
| CN109004647B (en) | IEEE2A type power system stabilizer PSS control parameter self-adaptive fitting method | |
| White et al. | Impact of sliding mode bandwidth and disturbance estimation on damping of wind turbine torsional vibration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191227 |