CN1424804A - Method for determining weight phase for calibrating dynamic balance of vertical water turbine generator rotor - Google Patents
Method for determining weight phase for calibrating dynamic balance of vertical water turbine generator rotor Download PDFInfo
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- CN1424804A CN1424804A CN 03117117 CN03117117A CN1424804A CN 1424804 A CN1424804 A CN 1424804A CN 03117117 CN03117117 CN 03117117 CN 03117117 A CN03117117 A CN 03117117A CN 1424804 A CN1424804 A CN 1424804A
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- phase
- guide bearing
- bearing axle
- point
- counterweight
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- Testing Of Balance (AREA)
Abstract
A method for determining the phase of counterweight in dynamic balance collection of the rotor of vertical hydrogenator features that the sensor and vibration meter are used to automatically measure the maximal swinging point of upper bearing top or the bearing top the most close to the rotor, that is, the phase angle between the maximal swinging point and the phase-descriminating signal point fixed to mainshaft, and the rotor's pole bracket or the back of magnetic yoke, whose phase angle is lagged by 90 deg. relative to that of said maximal swinging point, is just the position to instal counterweight.
Description
Technical field:
What the present invention relates to is the hydraulic generator field, particularly be a kind of definite method of hydraulic generator rotor dynamic balance calibration counterweight phase place.
Background technology:
" the China Power encyclopedia " that China nineteen ninety-five publishes and distributes, collect domestic 1700 multidigit expert hard works, repeatedly learn from each other by exchanging views show into.Wherein hydroelectric power generation " hydraulic generator rotor dynamic balancing " correction method of having rolled up the 397th page of enumeration is an authoritative technical method general in the world today.Now take passages as follows:
Require by empirical equation: W=(5～25) G/N
2 nR, Kg estimation examination adds weight.
G-generator amature assembly weight kg;
n
n-unit rated speed, r/min;
R-examination increasing the weight of radius, m;
(5～25) coefficient selection should consider to make unit vibration that more significantly reflection is arranged after adding test mass, considers again to be unlikely to make vibration values increase excessive and safety that jeopardize unit.
Test procedure 1. unit is started for the first time, measure under the unit reset condition on lead, lead down and water is led or the throw amplitude and the orientation thereof of corresponding section part, draw axis top view under the operating states of the units by vector.2. according to the shape of above-mentioned axis, determine that examination adds counterweight amount and direction thereof, to reduce the distance of axis to the center.3. unit starts for the second time after adding test mass, repeats 1. measurement and drawing.The variation of the amplitude of two axis top views of contrast, orientation, shape direction.With situation about adding behind the test mass is reset condition, determines the size and Orientation that examination for the second time increases the weight of.4. unit starts for the third time, paints the axis top view again.When the test mass piece need be added in different orientation several times, by vector with calculate and to be combined into a test mass piece.Under the normal condition, after 2～3 examinations increased the weight of, balance correction can be finished.
Said method has the following disadvantages;
1, it is blindly decision that examination first adds the orientation of balancing weight.Do not increase excessive and safety that jeopardize unit if weight mass that will be bigger mistake is added in former.
2, all each examinations that departs from correct phase add counterweight, all can and change original unbalance phase with the synthetic new unbalance mass, of former unbalance mass.Complicated and changeable being difficult to of counterweight process held.
3, prior art shuts down, multi-facetedly move, install and remove balancing weight often, the start test, divides folding counterweight effect workload big.Potential safety hazard is many, effort, weak effect consuming time.
Summary of the invention:
The objective of the invention is in order to overcome above deficiency; provide a kind of can reduce the examination counterweight and open, the shutdown operation number of times; exempting complicated polar plot draws and phase calculation; improve correction accuracy; make very loaded down with trivial details, complicated counterweight proofread and correct definite method of equally simple, accurate, the easy-operating hydraulic generator rotor dynamic balance calibration of the similar static balance counterweight counterweight phase place that becomes.
The object of the present invention is achieved like this:
Definite method of vertical hydrogenerator rotor dynamic balancing corrective weight phase place of the present invention is the start raising speed, use transducer, vialog measure automatically top guide bearing axle neck or near the maximum throw numerical point of the guide bearing axle neck of generator amature with respect to the phase angle α between phase discrimination signal point fixing on the set main shaft, lagging behind top guide bearing axle neck or leading the rotor support arm at 90 ° of phase angles of maximum throw point or yoke back near the guide bearing axle of generator amature is exactly the installation site of balancing weight, only need on this position of determining, add, subtract the balancing weight quality, do not change phase place, start detects guide bearing axle neck throw and changes, up to obtaining satisfactory result.
According to the principle of dynamics proof and through experimental verification, the centrifugal force that vertical hydrogenerator rotor unbalance quality produces in rotation, lead one of the maximum throw point existence of (or leading near the guide bearing axle of generator amature) irrelevant with the upper leading axle that this power causes with generating unit speed, invariable phase difference is so the polar plot that there is no need repeatedly to try after the counterweight is drawn and calculated.After uneven orientation was determined, the counterweight orientation promptly was determined.
The inventive method reduced the examination counterweight and open, the shutdown operation number of times, exempted complicated polar plot and drawn and phase calculation.Counterweight phase potential energy makes weight mass size and generator pilot bearing axle neck swing the variation that is in proportion accurately, improve correction accuracy, it is equally simple, accurate, easy to operate to make very loaded down with trivial details, complicated vertical hydrogenerator rotor dynamic balancing counterweight proofread and correct the similar static balance counterweight that becomes, safety.
Description of drawings:
Fig. 1 is maximum throw point of phase discrimination signal point, guide bearing and balancing weight installation site correlation schematic diagram.
Embodiment:
Embodiment 1:
Referring to Fig. 1, the start raising speed, automatically measure maximum throw point B near the guide bearing axle neck 2 of generator amature with respect to the phase angle α (as 106 °) between the phase discrimination signal point A that fixes on the set main shaft 1 with transducer, vialog, lagging behind the guide bearing axle, to lead the C point at rotor yoke 3 backs at maximum throw point B90 ° phase angle (promptly from 196 ° of phase discrimination signal points) be exactly the installation site of balancing weight 4.
Arrow among Fig. 1 is the unit direction of rotation.
Claims (1)
1, definite method of vertical hydrogenerator rotor dynamic balancing corrective weight phase place, it is characterized in that this method is the start raising speed, use transducer, vialog is measured top guide bearing axle neck automatically or is maximum throw point near the maximum throw numerical point of the guide bearing axle neck of generator amature, with respect to the phase angle α between phase discrimination signal point fixing on the set main shaft, lagging behind top guide bearing axle neck or leading the rotor support arm at 90 ° of phase angles of maximum throw point or yoke back near the guide bearing axle of generator amature is exactly the installation site of balancing weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03117117 CN1206791C (en) | 2003-01-08 | 2003-01-08 | Method for determining weight phase for calibrating dynamic balance of vertical water turbine generator rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03117117 CN1206791C (en) | 2003-01-08 | 2003-01-08 | Method for determining weight phase for calibrating dynamic balance of vertical water turbine generator rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1424804A true CN1424804A (en) | 2003-06-18 |
| CN1206791C CN1206791C (en) | 2005-06-15 |
Family
ID=4790665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03117117 Expired - Lifetime CN1206791C (en) | 2003-01-08 | 2003-01-08 | Method for determining weight phase for calibrating dynamic balance of vertical water turbine generator rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1206791C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528374A (en) * | 2012-01-04 | 2012-07-04 | 西安加立方鼓风机有限公司 | On-site repairing method for SJ type air-intake sintering system |
| CN102611262A (en) * | 2012-04-16 | 2012-07-25 | 甘肃省电力公司刘家峡水电厂 | Mounting and transporting tool for guide bearing bush of vertical hydraulic generator and application method thereof |
| CN102019934B (en) * | 2009-09-10 | 2013-12-25 | 西安轨道交通装备有限责任公司 | Universal balance weight for railway tank car |
| CN103683582A (en) * | 2012-09-07 | 2014-03-26 | 东京零件工业股份有限公司 | Brushless motor |
| CN109060244A (en) * | 2018-08-30 | 2018-12-21 | 哈尔滨电机厂有限责任公司 | The dynamic balance running method of two multiple-frequency vibration problem of hydroelectric generating set rotor |
| CN109818470A (en) * | 2019-03-01 | 2019-05-28 | 明峰医疗系统股份有限公司 | A kind of static balance adjusting method of rotor |
| CN110907096A (en) * | 2019-12-04 | 2020-03-24 | 哈尔滨电气动力装备有限公司 | Dynamic balancing process for tungsten gold block flywheel of shielded motor |
| CN113418656A (en) * | 2021-05-07 | 2021-09-21 | 大唐水电科学技术研究院有限公司 | Dynamic balance implementation method of rotating equipment |
| CN116026275A (en) * | 2023-02-27 | 2023-04-28 | 鱼台感创精密机械有限公司 | Accurate detection device of axial float error of rotor |
-
2003
- 2003-01-08 CN CN 03117117 patent/CN1206791C/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019934B (en) * | 2009-09-10 | 2013-12-25 | 西安轨道交通装备有限责任公司 | Universal balance weight for railway tank car |
| CN102528374A (en) * | 2012-01-04 | 2012-07-04 | 西安加立方鼓风机有限公司 | On-site repairing method for SJ type air-intake sintering system |
| CN102611262A (en) * | 2012-04-16 | 2012-07-25 | 甘肃省电力公司刘家峡水电厂 | Mounting and transporting tool for guide bearing bush of vertical hydraulic generator and application method thereof |
| CN102611262B (en) * | 2012-04-16 | 2014-04-30 | 甘肃省电力公司刘家峡水电厂 | Mounting and transporting tool for guide bearing bush of vertical hydraulic generator and application method thereof |
| CN103683582A (en) * | 2012-09-07 | 2014-03-26 | 东京零件工业股份有限公司 | Brushless motor |
| CN103683582B (en) * | 2012-09-07 | 2017-08-29 | 东京零件工业股份有限公司 | Brushless motor |
| CN109060244A (en) * | 2018-08-30 | 2018-12-21 | 哈尔滨电机厂有限责任公司 | The dynamic balance running method of two multiple-frequency vibration problem of hydroelectric generating set rotor |
| CN109818470A (en) * | 2019-03-01 | 2019-05-28 | 明峰医疗系统股份有限公司 | A kind of static balance adjusting method of rotor |
| CN110907096A (en) * | 2019-12-04 | 2020-03-24 | 哈尔滨电气动力装备有限公司 | Dynamic balancing process for tungsten gold block flywheel of shielded motor |
| CN113418656A (en) * | 2021-05-07 | 2021-09-21 | 大唐水电科学技术研究院有限公司 | Dynamic balance implementation method of rotating equipment |
| CN116026275A (en) * | 2023-02-27 | 2023-04-28 | 鱼台感创精密机械有限公司 | Accurate detection device of axial float error of rotor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1206791C (en) | 2005-06-15 |
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Granted publication date: 20050615 |
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