CN102664500A - Rotor balance correcting method - Google Patents
Rotor balance correcting method Download PDFInfo
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- CN102664500A CN102664500A CN2012101494423A CN201210149442A CN102664500A CN 102664500 A CN102664500 A CN 102664500A CN 2012101494423 A CN2012101494423 A CN 2012101494423A CN 201210149442 A CN201210149442 A CN 201210149442A CN 102664500 A CN102664500 A CN 102664500A
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Abstract
The invention relates to a rotary body correcting method, in particular to a rotor balance correcting method. The balance correcting method comprises the following steps of: marking, drawing a horizontal line, measuring, recording, balancing and the like. The correcting method has the characteristics of simplicity, short correcting time, high correcting precision and the like. A rotor is not required to be detached, the rotor is directly corrected when equipment stops running, and the 3-5 days period for correcting by using a lateral vibration instrument or a balancing rack in the prior art can be shortened to 1-2 hours, so that the correcting time can be greatly reduced, the utilization rate and the economic benefits of the equipment are improved, for example, if a generator unit of 150 megawatts is overhauled for 3 days, income of more than 900 thousand yuan is lost. By using the correcting method, the correcting precision can meet the running technical requirement of the equipment, and the vibration of the corrected equipment can be controlled to be between 35 and 60 microns and can meet the running technical requirement of the equipment.
Description
Affiliated technical field
The present invention relates to a kind of bearing calibration of revolving body, particularly rotor balancing method of correcting.
Background technology
Large rotor such as blower fan, steam turbine in use owing to forms such as burn into wearing and tearing, thermal deformations, can cause the imbalance of rotor; Thereby cause the vibrations of blower fan, steam turbine; Because vibrations can produce very big noise, make the operational environment variation, the most important thing is to shake the wearing and tearing of having quickened rotor supports parts bearings; Shorten the useful life of equipment, can damage incidents when serious.When the amount of unbalance of rotor surpasses ormal weight, must carry out balance correction.
Revolving body bearing calibration commonly used at present mainly contains static balance and dynamic balancing dual mode.But for large revolving body, in the balance correction like rotors such as blower fan, steam turbines, because its bulky, big to the requirement of dynamic balancing equipment, general main employing static balance mode is proofreaied and correct.In proofreading and correct, mainly adopt side Vibration Meter and balancing stand to carry out balance correction work for the static balance of large revolving body.Because costing an arm and a leg of side Vibration Meter, general enterprise does not possess measuring condition, and in measuring process, needs repeatedly equipment to be carried out start and stop, because equipment to be detected is huge, repeatedly start and stop can cause great impact to equipment.And when utilizing balancing stand to carry out balance correction, need be with after the rotor dismounting, being placed into balancing stand carries out balance correction, waste time and energy, and correction time is long influence production.
Summary of the invention
The objective of the invention is to solve the defective that prior art exists, providing a kind of need not dismantle the rotor in the equipment, the rotor balancing method of correcting that correction time is short, correction accuracy can satisfy instructions for use.
Technical scheme of the present invention is: a kind of rotor balancing method of correcting, and this bearing calibration may further comprise the steps:
1) after the equipment that needs are proofreaied and correct stops operating, order marks mark on the blade of equipment rotor, on the casing that rotor is installed, draws the horizontal line that overlaps with the center of armature spindle together simultaneously;
2) order with after horizontal line aligns, is not having the mark of each blade of rotor under the nature of external force, measure and write down this mark rotational angle or with horizontal vertical moving distance;
3) behind the above-mentioned end-of-job, find out the rotor rotation angle maximum or with the blade of horizontal vertical moving apart from maximum, on the blade relevant position, add counterweight or boring and go heavily;
4) repeat above-mentioned steps 1-3, do not get final product apart from identical or all static rotation of each sheet blade until the rotational angle of each sheet leaf or with horizontal vertical moving.
Above-mentionedly on the blade relevant position, add counterweight or boring and go heavily, be in the rotor rotation angle maximum or with horizontal vertical moving the maximum or leaf position relative 180 ℃ apart from the blade of maximum with horizontal vertical moving adds counterweight apart from the back side punching of the blade of maximum or at rotational angle.
Rotor normally utilizes rolling bearing to support, and quite responsive for the uneven weight of large rotor, bearing calibration of the present invention is this characteristic of utilizing large rotor, have that bearing calibration is simple, correction time characteristics such as weak point, correction accuracy height.
Owing to need not to dismantle rotor; Directly, equipment carries out the correction of rotor when shutting down; Can time that utilize side Vibration Meter or balancing stand to proofread and correct in the prior art be shortened to 1-2 hours by 3-5 days, so just can practice thrift correction time greatly, improve usage ratio of equipment and economic benefit; Like generating set, overhaul the income that to lose surplus in the of 90 ten thousand yuan in 3 days for 150 megawatts.Utilize its correction accuracy of bearing calibration of the present invention can satisfy the specification requirement of equipment operation, the vibrations of proofreading and correct back equipment can be controlled between 35-60 microns, can satisfy the specification requirement of equipment operation.
Embodiment
Centrifugal blower rotor balancing method of correcting, this bearing calibration may further comprise the steps:
1) after the centrifugal blower that needs are proofreaied and correct stops operating; At first order marks label and mark on the rotor blade of centrifugal blower; As on rotor blade, mark 1,2,3 respectively ... Simultaneously on the side fixed head of blade, mark mark, on the casing of centrifugal blower, draw the horizontal line that overlaps with the center of armature spindle together then;
2) order with after horizontal line aligns, is not having the mark of each blade of rotor under the nature of external force, measure and write down this mark rotational angle or with horizontal vertical moving distance;
3) behind the above-mentioned end-of-job; Find out the rotor rotation angle maximum or with the blade of horizontal vertical moving apart from maximum, go heavy or on the side fixed head of maximum or relative 180 ℃ apart from the blade of maximum vacuum side of blade of rotational angle or blade, add counterweight in the punching of the back side of this blade with horizontal vertical moving.According to the size of blower fan, the Weight control of each counterweight is at 100-500 grams.Counterweight can be fixed through welding or existing other modes.
4) repeat above-mentioned steps 1-3, do not get final product apart from identical or all static rotation of each sheet blade until the rotational angle of each sheet leaf or with horizontal vertical moving.
As when maintenance draught fan impeller diameter is 2 meters boiler centrifugal induced draught fan; The vibration of draught fan impeller supporting seat reaches 350um before the maintenance; After above-mentioned 1-4 steps; On the side fixed head of the relative 180 ℃ blade of the maximum blade of rotational angle, add 500 gram counterweights, repeated multiple times is carried out the interpolation of counterweight, has only used one hour and just vibration has been dropped to 35um.
As when maintenance draught fan impeller diameter is 2.2 meters boiler centrifugal induced draught fan; The vibration of draught fan impeller supporting seat reaches 400um before the maintenance; After above-mentioned 1-4 steps; 500 gram weight are removed in boring on the relative 180 ℃ blade of the maximum blade of rotational angle, after the repeated multiple times, only use one and a half hours just vibration to be dropped to 60um.
This rotor balancing method of correcting also can be used for the correction of the rotor balancing of steam turbine, the aligning step of its method such as above-mentioned centrifugal blower rotor.The interpolation of counterweight and remove can be according to actual conditions is holed on the rotor of steam turbine or is added counterweight.
Claims (2)
1. rotor balancing method of correcting, this bearing calibration may further comprise the steps:
1) after the equipment that needs are proofreaied and correct stops operating, order marks mark on the blade of equipment rotor, on the casing that rotor is installed, draws the horizontal line that overlaps with the center of armature spindle together simultaneously;
2) order with after horizontal line aligns, is not having the mark of each blade of rotor under the nature of external force, measure and write down this mark rotational angle or with horizontal vertical moving distance;
3) behind the above-mentioned end-of-job, find out the rotor rotation angle maximum or with the blade of horizontal vertical moving apart from maximum, on the blade relevant position, add counterweight or boring and go heavily;
4) repeat above-mentioned steps 1-3, do not get final product apart from identical or all static rotation of each sheet blade until the rotational angle of each sheet leaf or with horizontal vertical moving.
2. according to the said rotor balancing method of correcting of claim 1; It is characterized in that above-mentionedly on the blade relevant position, adding counterweight or boring and going heavily, be in the rotor rotation angle maximum or with horizontal vertical moving the maximum or leaf position relative 180 ℃ apart from the blade of maximum with horizontal vertical moving adds counterweight apart from the back side punching of the blade of maximum or at rotational angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101494423A CN102664500A (en) | 2012-05-15 | 2012-05-15 | Rotor balance correcting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101494423A CN102664500A (en) | 2012-05-15 | 2012-05-15 | Rotor balance correcting method |
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| Publication Number | Publication Date |
|---|---|
| CN102664500A true CN102664500A (en) | 2012-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101494423A Pending CN102664500A (en) | 2012-05-15 | 2012-05-15 | Rotor balance correcting method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100253A (en) * | 2016-08-17 | 2016-11-09 | 广东工业大学 | A kind of drilling method of rotor |
| CN112615504A (en) * | 2021-01-12 | 2021-04-06 | 杭州古亮电动玩具有限公司 | Motor of automatic levelling when unbalanced |
| CN114310284A (en) * | 2022-03-07 | 2022-04-12 | 天津通广集团专用设备有限公司 | Rotor dynamic balance punching and screwing equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1955706A (en) * | 2005-10-24 | 2007-05-02 | 中国科学院电工研究所 | Gyrosope spherical rotor three-D static balaming measuring method and device |
| CN202110036U (en) * | 2011-06-10 | 2012-01-11 | 苏州中材建设有限公司 | Large-sized rotor static balancing device |
-
2012
- 2012-05-15 CN CN2012101494423A patent/CN102664500A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1955706A (en) * | 2005-10-24 | 2007-05-02 | 中国科学院电工研究所 | Gyrosope spherical rotor three-D static balaming measuring method and device |
| CN202110036U (en) * | 2011-06-10 | 2012-01-11 | 苏州中材建设有限公司 | Large-sized rotor static balancing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100253A (en) * | 2016-08-17 | 2016-11-09 | 广东工业大学 | A kind of drilling method of rotor |
| CN112615504A (en) * | 2021-01-12 | 2021-04-06 | 杭州古亮电动玩具有限公司 | Motor of automatic levelling when unbalanced |
| CN112615504B (en) * | 2021-01-12 | 2021-11-19 | 深圳欧拓奇科技有限公司 | Motor of automatic levelling when unbalanced |
| CN114310284A (en) * | 2022-03-07 | 2022-04-12 | 天津通广集团专用设备有限公司 | Rotor dynamic balance punching and screwing equipment |
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Application publication date: 20120912 |