CN107387294B - A kind of hydraulic generator stator machine hole installation center indirect measurement method - Google Patents
A kind of hydraulic generator stator machine hole installation center indirect measurement method Download PDFInfo
- Publication number
- CN107387294B CN107387294B CN201710652842.9A CN201710652842A CN107387294B CN 107387294 B CN107387294 B CN 107387294B CN 201710652842 A CN201710652842 A CN 201710652842A CN 107387294 B CN107387294 B CN 107387294B
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- piano wire
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- machine
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- 238000000691 measurement method Methods 0.000 title claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims description 55
- 238000000034 method Methods 0.000 claims description 22
- 241000209202 Bromus secalinus Species 0.000 claims description 8
- 239000003921 oil Substances 0.000 claims description 7
- 239000010721 machine oil Substances 0.000 claims description 3
- 238000011900 installation process Methods 0.000 abstract description 3
- 241000239290 Araneae Species 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
A kind of hydraulic generator stator machine hole installation center indirect measurement method, by the way that reference point is arranged on pit liner or draft tube cone side wall, by comparing reference between stator and reference point, realize quick centring centering of the stator after runner hangs in machine hole, it realizes and optimizes units' installation process, units' installation efficiency is improved, the units' installation duration is shortened, and improves the precision of units' installation.
Description
Technical field
The present invention relates to hydrogenerator installation field, especially a kind of hydraulic generator stator machine cheats installation center
Indirect measurement method.
Background technique
In power station during water-turbine unit, unit part centre centering is must in unit equipment installment work
An indispensable link, while centering positioning is again a job repeatedly, cumbersome；The size of centre deviation is unit peace
The important indicator of packing quality, also influences the quality of unit safety stable operation, and whether the unit centre measurement method of use is proper
When directly influencing the installation progress of unit.
Unit centre refers to the line at each fixation member center of unit.The installation center of hydraulic turbine base ring runner band seal is machine
The center reference of group installation, the center centering of other fixation members of turbine-generator units is on the basis of this center.Unit is fixed
The method of part centre centering: base ring runner band seal is directly measured using electrical measuring method, piano wire is moved into leak-stopping under base ring first
The installation center position of ring, then the center of unit fixation member is adjusted to the center of piano wire.But using above-mentioned side
For method on condition that when generator fixation member (stator, upper spider, lower bearing bracket) hangs in the installation of machine hole, runner does not hang in machine hole, this
Sample could directly measure base ring runner band seal using electrical measuring method so as to adjust generator fixation member center.The side of this measurement
Method, it is necessary to be completed in rotary wheel of water turbine lifting front stator, upper spider and lower bearing bracket and machine hole can be hung in and be installed, therefore
The work of generator installation must in advance and duration progress pressure is larger.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of hydraulic generator stator machine hole installation centers to measure indirectly
Method optimizes units' installation process, improves units' installation efficiency, shortens the units' installation duration, and improve unit
The precision of installation.
In order to solve the above technical problems, the technical scheme adopted by the invention is that: a kind of hydraulic generator stator machine hole peace
Dress center indirect measurement method, comprising the following steps:
1) vertical piano wire is set in machine hole, four first surveys is selected in base ring runner band seal same level height
Point is measured, measures the minimum spacing R of four the first measurement points to piano wire using electrical measuring method using inside micrometer cooperation earphoneOnly,
Then vertical position where adjusting piano wire according to four numerical value, until piano wire is located at machine pit foundation true centric position；
2) at least one in pit liner and draft tube cone at side wall on choose four the second measurement points, rower of going forward side by side
Note；
3) the minimum spacing R between four the second measurement points and piano wire is measured using electrical measuring method used in step 1)Machine
Or RCone, and record numerical value；
4) after installation runner, stator, piano wire is measured and adjusted using electrical measuring method used in step 1), makes piano
Measurement data of the line into the minimum spacing and step 3) of four the second measurement points is close, at this time piano wire and unit centre position
Deviant be (x ', y ')；
5) four minimum spacings between axial position and piano wire on stator are measured using electrical measuring method again, are then utilized
Jack or chain block adjust position of stator, essentially coincide stator axis with piano wire；
6) multiple measurement points are selected in the portion of stator upper, middle and lower, measures the shortest distance of the point to piano wire, it is most short
It is the radius of stator apart from the radius plus piano wire, records data after completing measurement；
7) stator circularity, the calculating with shaft concentricity in unit are carried out according to the stator radius data of measurement.
In preferred scheme, the piano wire upper end is arranged on seeking heart device, seeks the centrally disposed frame centre bit of heart device
It sets, the generator floor position of upper center in unit machine hole is arranged in centre frame；
Piano wire lower end is equipped with weight, and weight is arranged in oil drum, and machine oil is filled in oil drum.
In preferred scheme, four second measurement point positions are in same level, and two second adjacent surveys
Angle between amount point is 90 °.
Four second surveys in preferred scheme, in the step 4), on piano wire to pit liner or draft tube cone
Measure the minimum spacing of point and measurement data in step 3) is close or piano wire to pit liner or draft tube cone on four the
When the minimum spacing of two measurement points is equal with four groups of differences of the measurement data in step 3), piano wire and unit centre position at this time
The deviant set is (x ', y ').
In preferred scheme, in the step 6), measurement point selectes at least 16 respectively in the portion of stator upper, middle and lower.
In preferred scheme, in the step 1), four the first measurement point positions are in same level, and adjacent two
Angle between a first measurement point is 90 °, when between two the first measurement points and the minimum of piano wire being located on same axis
Away from ROnlyWhen numerical value is identical, then piano wire is located at machine hole center on the axis direction.
A kind of hydraulic generator stator machine provided by the present invention cheats installation center indirect measurement method, by using above-mentioned
Method, can solve rotary wheel of water turbine hang in machine hole after hydraulic generator stator can not be directly using base ring runner band seal as center base
The problem of quasi- centering, while this method is also used in other fixation members of generator such as upper spider, lower bearing bracket machine hole installation center
Centering, this method is easy to operate, and the process for optimizing units' installation improves the efficiency of units' installation, saves units' installation
Duration, so that unit centre line is more tended to a vertical line, to guarantee the precision of units' installation.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is the overall structure diagram of invention.
Fig. 2 is the structural schematic diagram that the unit centre benchmark of invention returns the benefit.
In figure: asking heart device 1, centre frame 2, piano wire 3, inside micrometer 4, pit liner 5, base ring runner band seal 6, oil drum
7, weight 8, draft tube cone 9.
Specific embodiment
In such as figure, a kind of hydraulic generator stator machine hole installation center indirect measurement method, comprising the following steps:
1) vertical piano wire 3 is set in machine hole, four first is selected in 6 same level height of base ring runner band seal
Measurement point cooperates earphone using the minimum spacing of electrical measuring method four the first measurement points of measurement to piano wire 3 using inside micrometer 4
ROnly, 3 place vertical position of piano wire then is adjusted according to four numerical value, until piano wire 3 is located at machine pit foundation true centric position；
2) at least one in pit liner 5 and draft tube cone 9 at side wall on choose four the second measurement points, rower of going forward side by side
Note；
3) the minimum spacing R between four the second measurement points and piano wire 3 is measured using electrical measuring method used in step 1)Machine
Or RCone, and record numerical value；
4) after installation runner, stator, piano wire 3 is measured and adjusted using electrical measuring method used in step 1), makes steel
The minimum spacing of 3 to four the second measurement points of qin line and the measurement data in step 3) approach, at this time piano wire 3 and unit centre
The deviant of position is (x ', y ')；
5) minimum spacing on stator between four axial positions and piano wire 3 is measured using electrical measuring method again, it is then sharp
Position of stator is adjusted with jack or chain block, essentially coincides stator axis with piano wire 3；
6) multiple measurement points are selected in the portion of stator upper, middle and lower, measures the shortest distance of the point to piano wire 3, it is most short
It is the radius of stator apart from the radius plus piano wire 3, records data after completing measurement；
7) according to the calculating of shaft concentricity in the stator radius data of measurement progress stator circularity, stator and unit.
In preferred scheme, 3 upper end of piano wire is arranged on seeking heart device 1, asks in the centrally disposed frame 2 of heart device 1
On heart position, the generator floor position of upper center in unit machine hole is arranged in centre frame 2；
3 lower end of piano wire is equipped with weight 8, and weight 8 is arranged in oil drum 7, fills machine oil in oil drum 7.
In preferred scheme, four second measurement point positions are in same level, and two second adjacent surveys
Angle between amount point is 90 °.
In preferred scheme, in the step 4), four second on piano wire 3 to pit liner 5 or draft tube cone 9
Measurement data in the minimum spacing of measurement point and step 3) is close or piano wire 3 to pit liner 5 or draft tube cone 9 on four
When the minimum spacing of a second measurement point is equal with four groups of differences of the measurement data in step 3), piano wire 3 and unit at this time
The deviant of center is (x ', y ').
In preferred scheme, in the step 6), measurement point selectes at least 16 respectively in the portion of stator upper, middle and lower.
In preferred scheme, in the step 1), four the first measurement point positions are in same level, and adjacent two
Angle between a first measurement point is 90 °, when between two the first measurement points and the minimum of piano wire 3 being located on same axis
Away from ROnlyWhen numerical value is identical, then piano wire 3 is located at machine hole center on the axis direction.
In preferred scheme, the calculation method of the circularity of the stator in step 7), stator and unit centre concentricity is as follows:
The roundness calculation of stator:
Assuming that setting n measuring point in the portion of stator upper, middle and lower, the shortest distance of measuring point to piano wire 3 is respectively a1、
a2、……、an, X-axis, Y-axis (as shown in Figure 1), a are set in the horizontal plane1、a2、……、anAngle with X-axis is respectively θ1、
θ2……θn, then by a1、a2、……、anIt is decomposed in X-axis, Y-axis:
a1X=a1cosθ1 a1Y=a1sinθ1
a2X=a2cosθ2 a2Y=a2sinθ2
…………
anX=ancosθn anY=ansinθn
Then the maximum deflection difference value in X-axis and Y-axis, i.e. center deviation value are calculated separately:
Each point eccentricity value is deducted, is obtained:
…………
By component synthesis of each measurement point in X-axis and Y-axis, obtain:
…………
Calculate R1To the value of delta of the maxima and minima of Rn, the practical circularity of δ extremely stator, it may be assumed that
δ=Max (R1, R2 ... Rn)-Min (R1, R2 ... Rn)
The calculating of stator and unit centre concentricity λ:
λ is smaller, then it represents that stator centering is more accurate.
Using aforesaid way, efficiently solve after rotary wheel of water turbine hangs in machine hole that hydraulic generator stator can not be directly the bottom of with
Ring runner band seal is the problem of center benchmark centering, and is cheated for other fixation members of generator such as upper spider, lower bearing bracket machine
Which also can be used in installation center centering, optimizes units' installation process, keeps units' installation more accurate, units' installation effect
Rate is also promoted.
Claims (6)
1. a kind of hydraulic generator stator machine cheats installation center indirect measurement method, it is characterized in that the following steps are included:
1) vertical piano wire (3) are set in machine hole, four the is selected in base ring runner band seal (6) same level height
One measurement point, using inside micrometer (4) cooperation earphone using electrical measuring method measure four the first measurement points to piano wire (3) most
Small spacing ROnly, vertical position where then adjusting piano wire (3) according to four numerical value, until piano wire (3) are located at machine pit foundation standard
Center；
2) at least one in pit liner (5) and draft tube cone (9) at side wall on choose four the second measurement points, rower of going forward side by side
Note；
3) the minimum spacing R between four the second measurement points and piano wire (3) is measured using electrical measuring method used in step 1)MachineOr
RCone, and record numerical value；
4) it after installation runner, stator, is measured and is adjusted piano wire (3) using electrical measuring method used in step 1), make piano
Measurement data of the line (3) into the minimum spacing and step 3) of four the second measurement points is close, at this time in piano wire (3) and unit
The deviant of heart position is (x ', y ')；
5) minimum spacing on stator between four axial positions and piano wire (3) is measured using electrical measuring method again, is then utilized
Jack or chain block adjust position of stator, essentially coincide stator axis with piano wire (3)；
6) multiple measurement points are selected in the portion of stator upper, middle and lower, measures the shortest distance of the point to piano wire (3), most short distance
From the radius that the radius plus piano wire (3) is stator, data are recorded after completing measurement；
7) stator circularity, the calculating with shaft concentricity in unit are carried out according to the stator radius data of measurement.
2. a kind of hydraulic generator stator machine according to claim 1 cheats installation center indirect measurement method, feature exists
In: piano wire (3) upper end is arranged on asking heart device (1), asks on heart device (1) centrally disposed frame (2) center, in
The generator floor position of upper center in unit machine hole is arranged in heart frame (2)；
Piano wire (3) lower end is equipped with weight (8), and weight (8) is arranged in oil drum (7), and machine oil is filled in oil drum (7).
3. a kind of hydraulic generator stator machine according to claim 2 cheats installation center indirect measurement method, feature exists
In: four second measurement point positions are in the angle in same level, and between two adjacent the second measurement points
90°。
4. a kind of hydraulic generator stator machine according to claim 1 cheats installation center indirect measurement method, feature exists
In: in the step 4), the minimum of four the second measurement points on piano wire (3) to pit liner (5) or draft tube cone (9)
Measurement data in spacing and step 3) is close or piano wire (3) to pit liner (5) or draft tube cone (9) on four second
When the minimum spacing of measurement point is equal with four groups of differences of the measurement data in step 3), piano wire (3) and unit centre at this time
The deviant of position is (x ', y ').
5. a kind of hydraulic generator stator machine according to claim 1 cheats installation center indirect measurement method, feature exists
In: in the step 6), measurement point selectes at least 16 respectively in the portion of stator upper, middle and lower.
6. a kind of hydraulic generator stator machine according to claim 1 cheats installation center indirect measurement method, feature exists
In: in the step 1), four the first measurement point positions are in same level, and between two adjacent the first measurement points
Angle is 90 °, when two the first measurement points and the minimum spacing R of piano wire (3) that are located on same axis stop numerical value it is identical when,
Then piano wire (3) is located at machine hole center on the axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710652842.9A CN107387294B (en) | 2017-08-02 | 2017-08-02 | A kind of hydraulic generator stator machine hole installation center indirect measurement method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710652842.9A CN107387294B (en) | 2017-08-02 | 2017-08-02 | A kind of hydraulic generator stator machine hole installation center indirect measurement method |
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| CN107387294A CN107387294A (en) | 2017-11-24 |
| CN107387294B true CN107387294B (en) | 2019-05-28 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109282735B (en) * | 2018-11-09 | 2024-10-18 | 中国水利水电第七工程局有限公司 | A device and method for detecting the center of a stator circular frame of a hydro-generator |
| CN110274564B (en) * | 2019-07-31 | 2021-10-26 | 江苏南方光纤科技有限公司 | Concentricity calibration method for high-rise equipment |
| CN113108678B (en) * | 2021-04-14 | 2023-01-24 | 四川华能涪江水电有限责任公司 | Method for measuring and adjusting center of fixed part of hydroelectric generating set |
| CN115342705B (en) * | 2022-09-01 | 2024-04-12 | 中国长江电力股份有限公司 | Method for determining updating and reconstruction reference center of large axial flow rotating paddle type hydroelectric generating set |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5941676A (en) * | 1982-03-17 | 1984-03-07 | Fuji Electric Co Ltd | Nozzle centering red for pelton turbine |
| JPS59136578A (en) * | 1983-01-25 | 1984-08-06 | Toshiba Corp | Centering of tandem type pump water wheel |
| CN100516372C (en) * | 2006-08-08 | 2009-07-22 | 四川东风电机厂有限公司 | Installation Method of Shaft Extension Tubular Water Turbine Unit |
| CN101196001A (en) * | 2008-01-07 | 2008-06-11 | 四川东风电机厂有限公司 | Method for mounting shaft extension tubular turbine |
| JP5720379B2 (en) * | 2011-03-31 | 2015-05-20 | 日本電気株式会社 | Water current generator |
| CN103240592B (en) * | 2013-04-11 | 2015-12-23 | 中国葛洲坝集团股份有限公司 | The exactly determined method of turning hydrogenerator set for alignment unit pivot |
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