CN107966243A - A kind of method of on-line tuning heavy combustion engine rotor residual unbalance, - Google Patents
A kind of method of on-line tuning heavy combustion engine rotor residual unbalance, Download PDFInfo
- Publication number
- CN107966243A CN107966243A CN201711182253.5A CN201711182253A CN107966243A CN 107966243 A CN107966243 A CN 107966243A CN 201711182253 A CN201711182253 A CN 201711182253A CN 107966243 A CN107966243 A CN 107966243A
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- China
- Prior art keywords
- counterweight
- combustion engine
- point
- vibration values
- circle
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- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 4
- 238000010977 unit operation Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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
- G01M1/02—Details of balancing machines or devices
-
- 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 imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
- G01M1/24—Performing balancing on elastic shafts, e.g. for crankshafts
-
- 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 imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
- G01M1/26—Determining imbalance by oscillating or rotating the body to be tested with special adaptations for marking, e.g. by drilling
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The present invention relates to heavy combustion engine technical field, and in particular to a kind of method of on-line tuning heavy combustion engine rotor residual unbalance,.Using in heavy combustion engine generating set, the shaft coupling of combustion engine and generator installs the bolt on side, install counterweight additional at bolt, the quality of the counterweight that should be installed and angular is calculated by the vibration values measured to unit in full rotating speed, after counterweight is installed, verified by unit operation and optimized according to unit vibration value, exclude the exceeded failure of unit vibration value.The method of the present invention can effectively reduce the residual unbalance, of rotor, reduce the vibration values of combustion engine, realize the purpose of heavy combustion engine unit safety, reliability service.
Description
Technical field
The present invention relates to heavy combustion engine technical field, and in particular to a kind of on-line tuning heavy combustion engine rotor is remaining uneven
The method of amount.
Background technology
Country's energy field is generated electricity very universal using heavy combustion engine at present, and heavy combustion engine rotor need to be in balancing machine when assembling
Upper to pass through dynamic balancing, heavy combustion engine rotor blade length is big, and gas-flow resistance is very big during adjustment of balance, rotor need to be placed on vacuum chamber
Inner equilibrium, when part heavy combustion engine rotor balancing, do not possess the condition vacuumized, can only carry out low speed balancing, and rotor is remaining uneven
Weigh not quite identical with working status.When rotor balances on balancing machine at the same time, during pivot is rotated with working status
The heart cannot be completely superposed, and also resulting in residual unbalance, and working status has difference.After combustion engine work a period of time, rotor
Residual unbalance, can also change, and cause combustion engine vibration values to increase.Above-mentioned reason is required for carrying out combustion engine rotor online
Residual unbalance, is adjusted, reduces vibration values during combustion engine operation.
The content of the invention
In order to solve the above technical problems, the present invention discloses a kind of side of on-line tuning heavy combustion engine rotor residual unbalance,
Method, using in heavy combustion engine generating set, the bolt on the shaft coupling installation side of combustion engine and generator, installation balance is matched somebody with somebody at bolt
Weight, the quality for calculating the counterweight that should be installed by the vibration values measured to unit in full rotating speed are installed and put down with angularly
After the counterweight that weighs, verified by unit operation and optimized according to unit vibration value, exclude the exceeded failure of unit vibration value.This
Inventive method can effectively reduce the residual unbalance, of rotor, reduce the vibration values of combustion engine, realize heavy combustion engine unit safety,
The purpose of reliability service.
Concrete technical scheme is as follows：
A kind of method of on-line tuning heavy combustion engine rotor residual unbalance, specifically comprises the following steps：
(1) three points NO.1, NO.2, NO.3 between each other into 120 ° are put on shaft coupling；
(2) start combustion engine and measure vibration values when reaching 3000 revs/min；
(3) the mounting process counterweight C1 on point NO.1；
(4) start combustion engine and measure vibration values when reaching 3000 revs/min；
(5) counterweight is removed from point NO.1 and is installed on point NO.2；
(6) start combustion engine and reach 3000 revs/min, measurement vibration values；
(7) counterweight is removed from point NO.2 and is installed on point NO.3；
(8) start combustion engine and reach 3000 revs/min, measurement vibration values；
(9) according to the ratio of vibration values (without counterweight) on drawing a circle is drawn by radius of P0；
(10) three points NO.1, NO.2, NO.3 between each other into 120 ° are put on this circle, and are being joined by this direction
Counterweight is replaced on joint；
(11) foot of compasses is placed on point NO.1 and draws one by radius of P1 according to the ratio of vibration values (with technique counterweight)
Section camber line；
(12) foot of compasses is placed on point NO.2 and draws one by radius of P2 according to the ratio of vibration values (with technique counterweight)
Section camber line；
(13) foot of compasses is placed on point NO.3 and draws one by radius of P3 according to the ratio of vibration values (with technique counterweight)
Section camber line；
(14) should converge from three points NO.1, NO.2, NO.3 three sections of camber lines drawn on same point C, from the center of circle to
The one line segment OC of strokes and dots intersected with circle P0, should install the counterweight on dynamo coupling on obtained point NO.4；
(15) quality of installation counterweight is determined by formula C=C1 × (P0/OC)；
The quality of wherein C1-technique counterweight, the radius of the circle for P0-drawn according to the ratio of vibration values (without counterweight),
The length of the line segment of OC-from the center of circle to three sections of camber line crosspoints.
The beneficial effect of this method is：
On-line tuning rotor residual unbalance, method of the present invention, efficiently solves unit vibration value excessive problem, design
It is required that vibration values during combustion engine stable operation<15mm/s, vibration values reach 25mm/s before online overall dynamic-balance, vibration values after balance
Fall below 6mm/s.Vibration values are exceeded to cause mechanical damage to unit part, influence the safety and reliability of unit operation.
Brief description of the drawings
Fig. 1 is the shaft coupling attachment structure schematic diagram of heavy combustion engine and generator；
Fig. 2 is counterweight scheme of installation；
Fig. 3 is counterweight mounting structure enlarged drawing；
Fig. 4 is balance weight structure schematic diagram；
Fig. 5 is to determine rotor unbalance degree schematic diagram.
Wherein, 1- shaft couplings；Axle journal before 2-；3- city wall nuts；4- bolts；5- balance counterweights.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings, but protection scope of the present invention is limited from attached drawing.
Fig. 1 is the shaft coupling connection structure of heavy combustion engine and generator, and Fig. 2 is counterweight scheme of installation, and Fig. 3 is flat
Weigh counterweight mounting structure enlarged drawing, and Fig. 4 is balance weight structure schematic diagram.Pass through the vibration values measured to unit in full rotating speed
The quality for the counterweight that should be installed is calculated with angularly, after balance counterweight 5 is installed, is verified by unit operation and according to machine
Group vibration values angularly optimize the quality of counterweight and installation.
Specific optimization method is as follows：
Fig. 5 is to determine rotor unbalance degree schematic diagram, as shown in the figure：
Determine the example of rotor unbalance degree：
Vibration values (without technique counterweight) during idle running are 27mm/s；
Vibration values NO.1=19mm/s on point NO.1；
Vibration values NO.2=30mm/s on point NO.2；
Vibration values NO.3=35mm/s on point NO.3；
Selection percentage is 3：1
P0=27 × 3=81mm
P1=19 × 3=57mm
P2=30 × 3=90mm
P3=35 × 3=105mm
One circle is drawn as radius on drawing using P0=27 × 3=81mm.Three between each other into 120 ° are marked on circle
A point NO.1, NO.2, NO.3.It is that radius draws one section of camber line using point NO.1 as the center of circle, P1=57mm；Using point NO.2 as the center of circle, P2
=90mm draws one section of camber line for radius；It is that radius draws one section of camber line using point NO.3 as the center of circle, P3=105mm, three sections of camber lines are in point C
On converge.
Connect center of circle O and point C and draw straight line, point NO.4 is intersected at circle, generator connection should be installed on point NO.4
Counterweight on joint, by formula C=C1 × (P0/OC)=75 × (81/15)=405g.
Wherein, С1The quality (assuming that quality is 75g) of-technique counterweight, the radius of P- circles, the screw of fixed weight
On this circle；The position of point NO.1, NO.2, NO.3- mounting process counterweight；P0-according to the ratio of vibration values (without counterweight)
The radius for the circle that example is drawn；The length (being assumed to be 15mm) of the line segment of OC-from the center of circle to three sections of camber line crosspoints.
Claims (1)
1. a kind of method of on-line tuning heavy combustion engine rotor residual unbalance, specifically comprises the following steps：
(1) three points NO.1, NO.2, NO.3 between each other into 120 ° are put on shaft coupling；
(2) start combustion engine and measure vibration values when reaching 3000 revs/min；
(3) the mounting process counterweight C1 on point NO.1；
(4) start combustion engine and measure vibration values when reaching 3000 revs/min；
(5) counterweight is removed from point NO.1 and is installed on point NO.2；
(6) start combustion engine and reach 3000 revs/min, measurement vibration values；
(7) counterweight is removed from point NO.2 and is installed on point NO.3；
(8) start combustion engine and reach 3000 revs/min, measurement vibration values；
(9) according to the ratio of vibration values (without counterweight) on drawing a circle is drawn by radius of P0；
(10) three points NO.1, NO.2, NO.3 between each other into 120 ° are put on this circle, and by this direction in shaft coupling
Upper replacement counterweight；
(11) foot of compasses is placed on point NO.1 and draws one section of arc by radius of P1 according to the ratio of vibration values (with technique counterweight)
Line；
(12) foot of compasses is placed on point NO.2 and draws one section of arc by radius of P2 according to the ratio of vibration values (with technique counterweight)
Line；
(13) foot of compasses is placed on point NO.3 and draws one section of arc by radius of P3 according to the ratio of vibration values (with technique counterweight)
Line；
(14) should converge from three points NO.1, NO.2, NO.3 three sections of camber lines drawn on same point C, from the center of circle to circle
The one line segment OC of strokes and dots that P0 intersects, should install the counterweight on dynamo coupling on obtained point NO.4；
(15) quality of installation counterweight is determined by formula C=C1 × (P0/OC)；
The quality of wherein C1-technique counterweight, the radius of the circle for P0-drawn according to the ratio of vibration values (without counterweight), OC-
The length of line segment from the center of circle to three sections of camber line crosspoints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711182253.5A CN107966243A (en) | 2017-11-23 | 2017-11-23 | A kind of method of on-line tuning heavy combustion engine rotor residual unbalance, |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711182253.5A CN107966243A (en) | 2017-11-23 | 2017-11-23 | A kind of method of on-line tuning heavy combustion engine rotor residual unbalance, |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107966243A true CN107966243A (en) | 2018-04-27 |
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ID=61999843
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711182253.5A Pending CN107966243A (en) | 2017-11-23 | 2017-11-23 | A kind of method of on-line tuning heavy combustion engine rotor residual unbalance, |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907095A (en) * | 2019-12-18 | 2020-03-24 | 中国科学院工程热物理研究所 | Solution for gas generator rotor vibration overrun |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793672A (en) * | 2006-01-05 | 2006-06-28 | 林奇文 | On-site balancing method for centrifugal fan impeller |
| CN104330214A (en) * | 2014-08-07 | 2015-02-04 | 郑州大学 | Simple field dynamic balancing method |
| CN105387972A (en) * | 2015-11-23 | 2016-03-09 | 沈阳黎明航空发动机(集团)有限责任公司 | Rotor online balancing method after blade replacing of heavy type gas turbine |
| CN106353035A (en) * | 2016-10-31 | 2017-01-25 | 攀钢集团工程技术有限公司 | Online dynamic balance correction method of large-size draught fan impeller |
-
2017
- 2017-11-23 CN CN201711182253.5A patent/CN107966243A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793672A (en) * | 2006-01-05 | 2006-06-28 | 林奇文 | On-site balancing method for centrifugal fan impeller |
| CN104330214A (en) * | 2014-08-07 | 2015-02-04 | 郑州大学 | Simple field dynamic balancing method |
| CN105387972A (en) * | 2015-11-23 | 2016-03-09 | 沈阳黎明航空发动机(集团)有限责任公司 | Rotor online balancing method after blade replacing of heavy type gas turbine |
| CN106353035A (en) * | 2016-10-31 | 2017-01-25 | 攀钢集团工程技术有限公司 | Online dynamic balance correction method of large-size draught fan impeller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907095A (en) * | 2019-12-18 | 2020-03-24 | 中国科学院工程热物理研究所 | Solution for gas generator rotor vibration overrun |
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Application publication date: 20180427 |