CN107436210A - A kind of method of static balance of rotary wheel sensitivity adjustment - Google Patents
A kind of method of static balance of rotary wheel sensitivity adjustment Download PDFInfo
- Publication number
- CN107436210A CN107436210A CN201710646844.7A CN201710646844A CN107436210A CN 107436210 A CN107436210 A CN 107436210A CN 201710646844 A CN201710646844 A CN 201710646844A CN 107436210 A CN107436210 A CN 107436210A
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- Prior art keywords
- balance
- rotary wheel
- static
- runner
- static balance
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- 230000003068 static effect Effects 0.000 title claims abstract description 51
- 230000035945 sensitivity Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000003247 decreasing effect Effects 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 6
- 241000316770 Deschampsia cespitosa var. alpina Species 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005303 weighing 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
- G01M1/12—Static balancing; Determining position of centre of gravity
Abstract
The invention discloses a kind of method of static balance of rotary wheel sensitivity adjustment, reaches reduction or raising static balance of rotary wheel experimental rig sensitivity using adjust pad thickness is increased or decreased.Concrete operation step is：Runner is propped → turned on jack conjunction nut → release balance mandrel → is jacked up balance shaft core → adjust pad thickness → release jack bolt → to be reduced or increased and tightens conjunction screw → raising or reduction system sensitivity with jack bolt between balance shaft core and counter flange.The present invention changes conventional static balance sensitivity adjustment mode suitable for the design and experimentation of Static Equilibrium Test on Runner of Turbine device, makes to coordinate closely between each parts of static balance of rotary wheel device, manufacture difficulty is low, and balance quality is high, and effect is good.Required suitable for conventional Static Equilibrium Test on Runner of Turbine, the higher static balance of rotary wheel of water turbine experiment of the required precision especially suitable for water-storage, water pump, high-head radial-axial flow turbine runner static balance.
Description
Technical field：
It is more particularly to a kind of using pad adjustment runner the present invention relates to a kind of method of static balance of rotary wheel sensitivity adjustment
The method of static balancing apparatus balance system sensitivity.
Background technology：
Rotary wheel of water turbine is the core component of turbine-generator units, and water is developed in the comprehensive exploitation that manufacturing of runner represents unit
Gentle ability.Runner operationally runs at high speed, and has strict requirements to the amount of unbalance of runner, therefore, rotary wheel of water turbine goes out
Static balance experiment must be all carried out before factory, checks and eliminates amount of unbalance, it is ensured that unit safety, stably run.
Balance system sensitivity during in order to change static balance of rotary wheel, frequently with trapezoidal thread structure with adjust the runner centre of sphere with
Balance the distance between center of gravity.And trapezoidal thread gap itself is larger, there is also screw thread and pitch out of plumb in manufacture
Situation；Gap can be also produced between balance ball seat and balancing sleeve.Problem above causes the reduction of static balance of rotary wheel precision, even
It can not meet that high accuracy balance requires.And the balancing sleeve of trapezoidal thread structure is elongate cylindrical, required precision is high, therefore difficult processing
Degree is also larger.
With the development of hydropower industry, water-storage, water pump, Francis Turbine with High Rated Head are more and more, and runner is quiet flat
The required precision more and more higher of weighing apparatus, adjusting static balance of rotary wheel system gravity using the mode of trapezoidal thread can not meet that high accuracy turns
Take turns the requirement of static balance.Therefore, it is necessary to the defects of existing for existing apparatus and technology, researches and develops a kind of new method and goes to adjust
Static balance of rotary wheel experimental rig sensitivity, with the precision for reducing manufacturing cost, improving static balance of rotary wheel experimental rig.
The content of the invention：
The present invention provides a kind of new method and goes to adjust static balance of rotary wheel experimental rig sensitivity, with reduce manufacturing cost,
Improve the precision of static balance of rotary wheel experimental rig.It is characterized in that：Using increase or decrease adjust pad (2) thickness reach reduction or
Improve static balance of rotary wheel experimental rig sensitivity.Concrete operation step is as follows：
1) when needing to improve static balance of rotary wheel experimental rig sensitivity：
Runner (9) is propped with jack, off center support pedestal (8), turn on balance shaft core (4) and counter flange
(1) conjunction fixing nut (5), release balance mandrel (4) are jacked up with jack bolt (3) and balance shaft core (4) between, reduction is adjusted
Whole pad (2) thickness, jack bolt (3) is unclamped, conjunction fixing nut (5).
2) when needing to reduce static balance of rotary wheel experimental rig sensitivity：
Runner (9) is propped with jack, off center support pedestal (8), turn on balance shaft core (4) and counter flange
(1) conjunction fixing nut (5), release balance mandrel (4) are jacked up with jack bolt (3) and balance shaft core (4) between, increase is adjusted
Whole pad (2) thickness, jack bolt (3) is unclamped, tightens a conjunction fixing nut (5).
Technique effect：
1st, the present invention changes in the past quiet suitable for the design and experimentation of Static Equilibrium Test on Runner of Turbine device
Balance sensitivity adjustment mode, make to coordinate closely between each parts of static balance of rotary wheel device, manufacture difficulty is low, balance quality
Height, effect are good.
2nd, the present invention be applied to conventional Static Equilibrium Test on Runner of Turbine requirement, especially suitable for (water-storage, water pump,
Francis Turbine with High Rated Head) static balance of rotary wheel required precision it is higher static balance of rotary wheel of water turbine experiment.
Brief description of the drawings：
Fig. 1 is the static balance of rotary wheel experimental rig designed by using the present invention
Embodiment：
As shown in figure 1, reach reduction or raising static balance of rotary wheel experimental rig using the thickness of adjust pad 2 is increased or decreased
Sensitivity requirement.Concrete operation step is as follows：
1) when needing to improve static balance of rotary wheel experimental rig sensitivity：
Runner 9 is propped with jack, off center support pedestal 8, turned between balance shaft core 4 and counter flange 1
Conjunction fixing nut 5, balance mandrel 4 is unclamped, balance shaft core 4 is jacked up with jack bolt 3, reduces the thickness of adjust pad 2, unclamp top
Bolt 3 is played, tightens a conjunction fixing screws 5.
2) when needing to reduce static balance of rotary wheel experimental rig sensitivity：
Runner 9 is propped with jack, off center support pedestal 8, turned between balance shaft core 4 and counter flange 1
Conjunction fixing nut 5, balance mandrel 4 is unclamped, balance shaft core 4 is jacked up with jack bolt 3, increases the thickness of adjust pad 2, unclamp top
Bolt 3 is played, tightens a conjunction fixing screws 5.
Example is embodied：
By taking certain static balance of rotary wheel of water turbine process as an example, illustrate the design and adjustment process implemented using the present invention：The water
Turbine Runner weight 48480kg, runner height 1766mm, it is maximum it is cylindrical be lower ring outside diameter Φ 5260mm, static balance of rotary wheel
Allow remaining unbalanced moments 115Nm；Static balance of rotary wheel experimental rig weight 3660kg (weight for being free of support pedestal 9),
Now static balance sensitivity requirement runner balance system center of gravity and balance centre of sphere distance are corresponding between 40mm~60mm
Sensitivity requirement is 0.597mm~0.896mm.
When static balance of rotary wheel experimental rig designs, static balance of rotary wheel experimental rig is initially set according to pad 40mm thickness
Meter, outfit 10mm, 20mm, 30mm pad is some, and pad is processed using grinding machine, ensures identical dimensional thickness tolerance in 0.015mm
Within.
Static balance of rotary wheel experiment during choose hang weight 3kg measurement sensitivities be 0.48mm, therefore it is undesirable, it is necessary to
Improve runner center of gravity and improve static balance of rotary wheel sensitivity requirement.Be computed needing improving runner balance system center of gravity 14.7mm~
34.7mm, specific implementation step are as follows：
1) static balance of rotary wheel experimental rig carries out initial balance by Theoretical Design pad 40mm hassocks piece, as shown in Figure 1.
2) according to adjustment runner balance system center of gravity requirement, choose and improve 20mm system gravities, can reach static balance of rotary wheel
Sensitivity requirement, then need that 2 thickness of adjust pad=40-20=20mm is thinned.
3) static balance of rotary wheel pilot system sensitivity is improved as follows：
Runner 9 is propped into off center support pedestal 8 with jack, turns on the handle between balance shaft core 4 and counter flange 1
Fixing nut 5 is closed, unclamps balance mandrel 4, balance shaft core 4 is jacked up with jack bolt 3, the adjust pad 2 of 40mm thickness is withdrawn from,
20mm adjust pad is replaced by, jack bolt 3 is decontroled, tightens a conjunction fixing screws 5 again, continue to do static balance of rotary wheel examination
Test.
4) after according to static balance of rotary wheel system sensitivity is adjusted with upper type, remeasure and drop to 0.64mm, sensitivity
It is qualified, follow-up static balance of rotary wheel experiment can be carried out.
Claims (1)
1. a kind of method of static balance of rotary wheel sensitivity adjustment, it is characterized in that：Reached using adjust pad (2) thickness is increased or decreased
To the requirement for reducing or improving static balance of rotary wheel experimental rig sensitivity.Concrete operation step is as follows：
1) when needing to improve static balance of rotary wheel experimental rig sensitivity：Runner (9) is propped with jack, off center balance
Bearing (8), turn between balance shaft core (4) and counter flange (1) conjunction fixing nut (5), unclamp balance mandrel (4), use
Jack bolt (3) jacks up balance shaft core (4), reduces adjust pad (2) thickness, unclamps jack bolt (3), tightens the fixed spiral shell of conjunction
Female (5)；
2) when needing to reduce static balance of rotary wheel experimental rig sensitivity：Runner (9) is propped with jack, off center balance
Bearing (8), turn between balance shaft core (4) and counter flange (1) conjunction fixing nut (5), unclamp balance mandrel (4), use
Jack bolt (3) jacks up balance shaft core (4), increases adjust pad (2) thickness, unclamps jack bolt (3), tightens the fixed spiral shell of conjunction
Female (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710646844.7A CN107436210A (en) | 2017-08-01 | 2017-08-01 | A kind of method of static balance of rotary wheel sensitivity adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710646844.7A CN107436210A (en) | 2017-08-01 | 2017-08-01 | A kind of method of static balance of rotary wheel sensitivity adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107436210A true CN107436210A (en) | 2017-12-05 |
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ID=60460384
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710646844.7A Pending CN107436210A (en) | 2017-08-01 | 2017-08-01 | A kind of method of static balance of rotary wheel sensitivity adjustment |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236122A (en) * | 2008-02-22 | 2008-08-06 | 四川东风电机厂有限公司 | Hydroelectric generating set rotor seat type spherical face static pressure balancing device |
| CN101482443A (en) * | 2008-12-16 | 2009-07-15 | 哈尔滨电机厂有限责任公司 | Rotor static pressure bearing balance technique for large mixed-flow turbine |
| RU2456566C1 (en) * | 2011-04-13 | 2012-07-20 | Общество с Ограниченной Ответственностью "Инженерное Бюро Воронежского Акционерного Самолетостроительного Общества" | Method for static balancing of rotor wheel of hydraulic turbine |
| CN202693207U (en) * | 2012-06-29 | 2013-01-23 | 东芝水电设备（杭州）有限公司 | Rotating component static balance device of hydroelectric generating set |
-
2017
- 2017-08-01 CN CN201710646844.7A patent/CN107436210A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236122A (en) * | 2008-02-22 | 2008-08-06 | 四川东风电机厂有限公司 | Hydroelectric generating set rotor seat type spherical face static pressure balancing device |
| CN101482443A (en) * | 2008-12-16 | 2009-07-15 | 哈尔滨电机厂有限责任公司 | Rotor static pressure bearing balance technique for large mixed-flow turbine |
| RU2456566C1 (en) * | 2011-04-13 | 2012-07-20 | Общество с Ограниченной Ответственностью "Инженерное Бюро Воронежского Акционерного Самолетостроительного Общества" | Method for static balancing of rotor wheel of hydraulic turbine |
| CN202693207U (en) * | 2012-06-29 | 2013-01-23 | 东芝水电设备（杭州）有限公司 | Rotating component static balance device of hydroelectric generating set |
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Application publication date: 20171205 |
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