CN106536857A - Method and auxiliary apparatus for balancing a rotor of a gas turbine - Google Patents
Method and auxiliary apparatus for balancing a rotor of a gas turbine Download PDFInfo
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- CN106536857A CN106536857A CN201580024251.6A CN201580024251A CN106536857A CN 106536857 A CN106536857 A CN 106536857A CN 201580024251 A CN201580024251 A CN 201580024251A CN 106536857 A CN106536857 A CN 106536857A
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- leaf dish
- rotor
- group
- leaf
- dish
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/027—Arrangements for balancing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
Abstract
A method for balancing a rotor (1) of a gas turbine having a plurality of discs (2) arranged in succession along a line (A) includes the steps of: acquiring eccentricity measurements (ER1,..., ERP) of the discs (2) of the rotor (1) of a gas turbine in an initial configuration; based on the eccentricity measurements (ER1,..., ERP), identifying at least two critical areas of the rotor (1), in which variations of eccentricity between consecutive discs (2) are not in compliance with an acceptance criterion; identifying at least a first group of consecutive discs (2), arranged between two critical areas; determining at least one corrective action of the rotor (1), the corrective action including a relative rotation about the axis (A) between two consecutive discs (2) of the first group of discs (2); and performing the corrective action.
Description
Technical field
The present invention relates to a kind of method being balanced to gas turbine rotor and servicing unit.
Background technology
As known, it is used for the gas turbine rotor for generating electricity in industrial system, generally includes multiple to fill vaned leaf
Disk and one or more spacer elements, these parts align along axis and couple in front.Leaf dish and spacer element are by
Centre tie-rod is clamped.Leaf dish has respective array of vanes, and each leaf dish limits the stage of compressor or turbine.
The rotor of gas turbine must carry out high-precision manufacture and assembling, to guarantee to be close to perfect balance.Consider
Quality and high speed are rotated (according to the standard of country variant, generally in 3000rpm or 3600rpm), even minimum mistake
The vibration of danger can also be caused, and typically result in the premature aging of some components.
The gas turbine rotor for no matter dispatching from the factory is considered as how appropriate balance, rotor own wt, operating temperature and
The load formed during rotation over time, can cause quality relative to many symmetry changes of axle.In fact, when in use
Gravity is intended to make only to obtain the rotor deformation of the support of bearing in end.
Jing is often necessary to intervene operating gas turbine rotor, to recover appropriate poised state, this flat
Although weighing apparatus state is simultaneously non-ideal, always within tolerance interval.
In some cases, relatively low invasive intervention may be carried out, for example, increases flat in the appropriate shell for providing
Weight amount.
But at other, unbalanced situation only cannot be compensated by these operations, it is necessary to take apart and turn
Son, corrects the relative direction of leaf dish group, to eliminate alignment error.
The operation for taking and ressembling rotor apart is very expensive, especially because this means very long-term machine down
Time, or even it is several weeks.It is thus apparent that the time being reduced as far as required for this kind of intervention is extremely important.
Regrettably, it is extremely complex problem to recognize which leaf dish needs rotation and how many angles rotated, and is led to
The scheme assert on Chang Eryan paper is in practice and incorrect, because various X factors cannot consider completely.For example, continuous leaf
Contact surface between disk may cause deformation or failure due to use, and this can cause unforeseen rotating against.Such as
The theoretical scheme of fruit cannot provide Expected Results, or detection shows that rotor is not up to balanced or fully do not balanced, then must be again
Resurgent journey and waste the substantial amounts of time.
The content of the invention
It is an object of the invention to provide a kind of method being balanced to gas turbine rotor and servicing unit, avoiding or
Person at least weakens described defect.
According to the present invention, claim 1 and 10 is respectively to a kind of method being balanced to gas turbine rotor or auxiliary
Device is helped to be defined.
Description of the drawings
Referring now to the following drawings, the present invention will be described, and accompanying drawing illustrates some non-limiting enforcements of the present invention
Example, wherein：
Fig. 1 be gas turbine rotor along the top view on horizontal axial plane, and illustrate according to embodiments of the present invention
The simplified block diagram of the servicing unit with regard to being balanced to gas turbine rotor；
Fig. 2 a are the diagrams of the eccentric part of rotor in Fig. 1；
Fig. 2 b are to illustrate in an initial condition, the schematic diagram of the first polar coordinates misalignment measurement of rotor in Fig. 1；
Fig. 3 is the simplified flowchart of the method being balanced to gas turbine rotor according to an embodiment of the invention；
Fig. 4 is the more detailed flow chart of method and step in Fig. 3；
Fig. 5 is the schematic diagram of the extracted eccentricity component of the first measurement illustrated from Fig. 2；
Fig. 6 illustrates the first amount employed in the method according to the invention；
Fig. 7 illustrates the second amount employed in the method according to the invention；
Fig. 8 is the more detailed flow chart of the further measure of method in Fig. 3；
Fig. 9 is to illustrate in an initial condition, the schematic diagram of the second polar coordinates misalignment measurement of rotor in Fig. 1；
Figure 10 is the extracted eccentric part of the second measurement illustrated from Fig. 9；
Figure 11 is illustrated under actual correction state, the schematic diagram of the tripolar coordinates misalignment measurement of rotor in Fig. 1；And
Figure 12 is the eccentricity component that the second measurement illustrated from Figure 11 is extracted.
Specific embodiment
With reference to Fig. 1, electricity generation system gas turbine rotor indicates with reference 1 that as entirety which includes multiple along axle A
Arrangement and the leaf dish 2 clamped by central tie-rod 3.The first leaf dish group 2 with respective the first rotor blade 5, limits rotor 1
Compression section 1a, while the second leaf dish group 2 with the second rotor blade 6, limit turbine section 1b of rotor 1.Compression section 1a and
Turbine section 1b is vaned separated from one another as the leaf dish 2 of the substantial cylindrical of spacer element in practice by not having.During use,
The toroidal combustion chamber (not shown) of gas turbine can be arranged in around the leaf dish 2 of interval.
Fore bearing joint portion 7 and rear bearing combining part 8 are contained in the first end plate and the second end plate respectively, before being also referred to as respectively
Or front quill shaft and rear quill shaft, here is by reference 2a, 2b instructions.
For convenience, unless carried out other explanations, hereinafter " leaf dish 2 " will as quill shaft 2a before overall instruction, afterwards in
The leaf dish 2 of empty axle 2b, compression section 1a, the leaf dish 2 and interval leaf dish 2 of turbine section 2b.
Fig. 1 also illustrates that the servicing unit being balanced to reaction wheel, is indicated with reference 10, and including place
Reason station 11 and measuring instrument 12.
Treating stations 11 receive measurement data from measuring instrument 12, and according to the data for receiving determining repairing for rotor 1
Positive status, wherein amendment state is rotated relative at least one leaf dish 2 of original state, with reduce rotor 1 it is overall not
Balance.
Measuring instrument 12 can be moved along the axle A of rotor 1, and rotor 1 is installed on the substrate (not shown) of turbine lower half
Or lathe (wherein only supports the axle 13b of bearing combining part 8 after the steady rest 13a of fore bearing joint portion 7, and support, with letter
Change mode is illustrated；The zero eccentric centering relative to rotary shaft is obtained by precise locating fixture) on.
Measuring instrument 12 obtains the phase place with regard to rotor 1Information (for example, by decoder or rotation and angular speed
Detector), and the information of the shaft position PA for measuring thereon.
Measuring instrument 12 can it is thus determined that each leaf dish 2 relative to 1 actual rotary shaft AR of rotor eccentric data, rotor 1
It is supported by the axle 13b of machine bearing or steady rest 13a and lathe and (also sees Fig. 2 a：It is when there are alignment errors, actual to revolve
Rotating shaft is not completely the same with the center C of the theoretical axle A of not deformed rotor 1 and leaf dish 2；Further, when carrying out on lathe
During measurement, actual rotary shaft AR can also be by being determined with the parallel mistake of axle 13b with reference to steady rest 13a, such as in example
Described).Determined partially by (or be used as a kind of selection, on the bearing of machine lower half) rotor 1 on lathe
The heart, and determine vibration of the position perpendicular to actual rotary shaft AR on each leaf dish surface.In practice, periodic output signal
It is recorded.The amplitude and phase place of output signal fundamental wave determines the center C of the leaf dish 2 in observation relative to actual rotary shaft
The presence of AR (also seeing Fig. 2 a) deviation, and relative to the bias direction of 1 reference direction of axle.Conversely, output signal is secondary
Harmonic wave determines the ellipticalness of the component for being checked.Additionally, in positive round leaf dish 2 and actual rotary shaft is (logical relative to gravity axis
Often gas turbine rotor) inclined situation when, second harmonic contribute to estimate 1 axle A corresponding positions of rotor flexibility.
In one embodiment, the output data (and eccentric data) with regard to each leaf dish 2 is by during multiple rotations of rotor 1
Measure, and by determining that measurement carries out average operation determining.In one embodiment, such as treating stations 11：It is determined that
Fourier's change of each the output data part for rotating of rotor 1, for the leaf dish 2 in inspection is measured during rotation；Inspection
Determined by looking into, eccentric peak-to-peak value (rotating in n times) is in the repeatable scope of measuring instrument；From each portion of output signal
The conversion mean value of the output signal of the frequency range corresponding to fundamental wave (for example, front four-time harmonic) for presenting is divided to determine that average output is believed
Number；And determine the inverse transformation of average output signal.Average calculating operation can be reduced and estimate measure error.
Fig. 2 b illustrate, in one example, one group of misalignment measurement that polar coordinates are presented, eccentricity vector E1 ..., EP have
The amplitude and phase place of all leaf dishes 2 in an initial condition of rotor 1.
Treating stations 11 are used to perform referring to the process described by Fig. 3.
First, treating stations 11 detect from measuring instrument 1 uniformity of the data for receiving, and correct any Acquisition Error
(frame 100).For example, the non-zero eccentricity value of fore bearing joint portion 7 or rear bearing combining part 8 means to turn on lathe (not shown)
The incomplete alignment of son 1.Alignment error affects the misalignment measurement of all leaf dishes 2.In this case, treating stations 11 are directed to rotor
1 all leaf dishes 2 determine the eccentric contribution by caused by the inaccurate combination with lathe, and from being carried by measuring instrument 12
For data deduct obtained contribution.
Once error is eliminated, measuring station 11 checks whether rotor 1 needs balance, such as by will be from measuring instrument institute
The equilibrium index obtained by the data of offer is contrasted (frame 110) with threshold value.If (frame 110, output need not be balanced
It is no), then EP (end of program) (frame 120).
Otherwise (frame 110, output be), treating stations 11 identify the danger zone of rotor 1, i.e., between eccentric change it is higher
Leaf dish 2 pairs or group (frame 130).Subsequently further will be retouched in detail with reference to Fig. 4 later with regard to the process of danger zone identification
State.
If there is at least two danger zones (frame 140, output be), treating stations 11 determine the corrective action (frame of rotor 1
150), otherwise (frame 140 is exported no) EP (end of program) (frame 120).
When performing correction intervention, treating stations 11 are defined as these measures between at least one pair of continuous leaf dish 2
Rotate against, and continuous leaf dish 2 keeps certain angle with other leaf dishes 2 of upstream and downstream respectively.In one embodiment, it is relative to revolve
Turn to be defined with regard to the gravity axis for rotating the leaf dish 2 being related to, and be arranged near at fore bearing joint portion 7 (Fig. 1), it is special
It is not gravity axis perpendicular to the surface of of leaf dish 2 itself.In this way, in practice two sections of rotor 2 with respect to each other
Rotation.Each section is bound by two leaf dishes 2 respectively, arranges and rotate against between two leaf dishes 2.
Then treating stations 11 determine the configuration (frame 160) by caused by corrective action, and assessment result configuration whether with it is secondary
Excellent scheme correspondence, i.e., at least partially optimization indicates the scheme (frame 170) of the object function being balanced to rotor 1.
If result configures (frame 170 is exported no) inconsistent with suboptimal design, treating stations 11 just exclude the result for identifying
Configure and determine that new correction is retouched to impose and new result configuration (frame 180).
If conversely, result configuration is exactly sub-optimal configuration (frame 170, output be), treating stations 11 are also assessed and meet balance strip
(for example, if the expected equilibrium index being associated with result configuration is less than threshold value, frame is 180) for part.
If result configuration do not meet, process terminates in the case of no scheme (frame 180, output it is no；Frame is 120).
If it is not, then test is by (frame 180, output be), the scheme for identifying is considered as that reliable and corresponding correction is arranged
Apply and obtain actual execution (according to result configuration is identified, rotor is opened and ressembles).
Once corrective action has been performed, reuse measuring instrument 12 and rotor 1 is measured, and treating stations 11 are adopted
Final balance (frame 190) is checked with the data for updating.
The program in hazard recognition region is, based on observation, to observe fault-free and obtain the rotor of bearings near end
Because weight has the bending of generally rule, and rotor tends to being arranged according to radian.The leaf dish for constituting rotor has
Given bias, it is eccentric to increase from end towards rotor center.Between continuous leaf dish, eccentric change is relatively low, and with continuous
The line of the respective point that is linked in sequence (such as center) of leaf dish can also be by satisfactory manner come near linear.This institute
During description, all groups of N number of continuous leaf dish 2 are all identified (N can, from 3, easily be selected in 4,5).For every
For one group, all it is determined relative to the interpolating function and the margin of tolerance of ideal case.
Do not have from description the rotor 1 of symmetry errors (ideal situation) configuration group of functions inside choose interpolating function.
Tolerance factor is determined with regard to interpolating function, it is contemplated that the asymmetry for being related to measure error between continuous leaf dish 2
And acceptable processing and build-up tolerance, including for example：
Bias between the outer of the leaf dish 2 of the self-centering shell and detection output data on each 2 opposite of leaf dish is (for example outside
Along 10 μm and the shell in each face between)；
Parallel mistake between the self-centering shell on each 2 opposite of leaf dish.
Acceptance criteria is whether the misalignment measurement based on one group of continuous leaf dish 2 is in the corresponding margin of tolerance.If investigation
At least one of 2 misalignment measurement of leaf dish exceed the margin of tolerance, the leaf dish 2 of identical group in investigation is danger zone.
4 pairs of hazard recognition regions are described in detail referring to the drawings later.
First (frame 200), treating stations 11 determine that by vector sum result is eccentric, and which is in fig 2 with ER signs (as letter
Just, as a result bias ER is presented only with example rather than in proportion).Then, treating stations 11 determine the institute of the bias for indicating single leaf dish 2
There is each projection of vector on result vector ER direction.The eccentricity component ER1 ..., ERP being achieved in that is shown in edge in Fig. 5
The position of each leaf dish 2 of axle A.
The N number of continuous leaf dish 2 of all groups in for rotor 1 is identified (frame 210), i.e. in practice：It is straight with two
Continue the front quill shaft of leaf dish in succession；Three leaf dishes in the direct downstream of front quill shaft etc.；Up to including turbine section most latter two
Last group of leaf dish and rear quill shaft.In one embodiment, per group includes three leaf dishes 2.
To every group of leaf dish 2, treating stations 11 determine interpolating function (F in figs. 6 and 7；220) and corresponding public affairs Fig. 4, frame
Difference scope (the R in Fig. 6 and 7；Fig. 4, frame is 230).
Interpolating function F can be, for example, the up to moving average in quartic polynomial function or appropriate cycle.Interpolation
The number of times of function F quantity N of leaf dish 2 can be selected according to belonging to per group.Quantity N for belonging to per group of leaf dish 2 is bigger, inserts
The number of times of value function F is bigger.In the example of Fig. 6 and 7, quantity N of every group of leaf dish 2 is 3, and interpolating function F is once many
Item formula function, that is to say, that straight line.
On the misalignment measurement of each continuous leaf dish (2) organized, interpolating function F can be determined with common least square method
(in the case of Fig. 6 ERJ, ERJ+1, ERJ+2；The ERK in the case of Fig. 7, ERK+1, ERK+2).
Additionally, in one embodiment, margin of tolerance R is amplitude band W, and which is centered on interpolating function F and is prolonged
Stretch.
Treating stations 11 check the misalignment measurement ERQ of identical group of all leaf dishes 2, ERQ+1, and whether FRQ+N-1 is in respective
Margin of tolerance R in (frame 240).
If the misalignment measurement of all leaf dishes 2, should all in (frame 240, output be) in respective margin of tolerance R in group
2 group echo of leaf dish is qualified (frame 250；In the case of misalignment measurement ERK in Fig. 7, ERR+1, ERK+2).
If conversely, at least one (frame 240, output outside margin of tolerance R in the misalignment measurement of leaf dish 2 in group
It is no), then this group of leaf dish is labeled as danger zone (frame 260；In the case of the misalignment measurement ERJ of Fig. 6, ERJ+1, ERJ+2).
In the example of hgure 5, the group for being labeled as danger zone is omitted identification.
For 2 groups of all continuous leaf dishes for identifying repeat selection and the interpolation of margin of tolerance R and interpolating function
Function belongs to the inspection of margin of tolerance R.
With reference to Fig. 8, in order to determine the corrective action of rotor 1, treating stations 11 are excluded first and are labeled as in the group of danger zone
Leaf dish 2 (frame 300), and recognize the group farther out (frame 310) of two candidate's leaf dishes 2 below between danger zone.This group of candidate's leaf
Disk 2 includes the minimum number of continuous leaf dish 2, such as 5.
For 2 groups of each pair leaf dish 2 (frame 320) of candidate's leaf dish, treating stations 11 determine multiple modification configurations, for rotor 1
All leaf dishes 2 determine corresponding expected bias (frame 330；Also see in the example of Fig. 9 and 10, wherein expected bias is labeled as
Eccentricity vector E1 ' ..., EP ' and each component ER1 ' ..., ERP ' along result bias ER ' directions), and it is directed to each
Modification configuration is calculated and represents the unbalanced quality parameter (frame 340) of expection.
For example, for each pair leaf dish 2, treating stations 11 determine 180 modification configurations, and the modification is configured with regard to initial configuration
In 1 ° of 180 ° of ± 90 ° of range tilts.
In one embodiment, quality parameter is remaining momentum weight PRM, and which is defined as the big of rotor aggregated momentum weight
It is little and consider that component is eccentric and its quality.Especially, remaining momentum weight is defined as：
Wherein Mj is the quality (may have respective blade) of 2 J leaf dishes, and EJ is to define 2 J leaf dishes bias
Vector.
Alternatively, quality parameter can be expected unbalanced index IS, be defined as：
Wherein | | EJ | | is the size for defining the eccentric vector of 2 J leaf dishes, INOMIt is the nominal moment of inertia of rotor 1, and C
It is constant (such as 109)。
Optionally, quality parameter can be the cumulative maximum bias on quadrant MEQ, as heuristic parameter, according to as follows
Calculate：
With regard to the sector of the given amplitude (such as 60 °) of actual rotary shaft AR definition；
The size of eccentricity vector E1 ..., EP in sector is added；
Sector is rotated with constant space in overall circumference, every time by all eccentricity vectors presented in sector
The size of E1 ..., EP is summed up；
Identify that maximum sector of the size sum of all eccentricity vectors E1 ..., EP presented in sector.
Accumulation bias on quadrant MEQ is quality parameter to be optimized.
Indicate that parameter gives the quantitative assessment to true rotor unbalance before or after correction is intervened, and with counted
It is expected uneven that the configuration that the corrective action drawn is produced is associated.
If the rotor of full symmetric balance, remaining momentum weight PMR, the maximum on unbalanced index IS and quadrant
Accumulation bias is zero.Higher value represents the equilibrium condition for deteriorating, until threshold value, more than threshold value, then rotor does not meet.
In a further embodiment, quality parameter to be optimized is normalized, makes the residue with dimension and weight
Momentum component PMR, unbalanced index IS and the combination as cumulative maximum bias on standard limit MEQ.The quality parameter of this type
It is robust because it is summarised respectively by the cumulative maximum on remaining momentum component PMR, unbalanced index IS and quadrant MEQ
Various aspects representated by bias.
Once treating stations 11 determine all of modification configuration, and the respective value of quality parameter, then optimize quality parameter
Configuration (the modification configuration that in this case, remaining momentum weight is minimized；Fig. 8, frame are 350) just chosen.
Once selected modification measure is performed using the process, inspection result is illustrated in Figure 11 and Figure 12.
Especially, obtain the misalignment measurement of the renewal of leaf dish 2 in actual modification configuration.The misalignment measurement of the renewal of leaf dish 2
By the polar coordinate representation of eccentricity vector E1 " ..., EP " in Figure 11, while Figure 12 the is showing along result ER " renewal in direction
Eccentricity component ER1 " ..., ERP ".
In one embodiment, treating stations 11 are configured to recognize some groups of candidate's leaf dishes 2, and the two of rotor 1 are defined as per group
The group of the continuous leaf dish 2 between individual danger zone.In this case, treating stations 11 determine corrective action, generally as described,
Presence likely between continuous leaf dish 2 also provides at least one and rotates against.
The method according to the invention can determine the modification configuration of rotor, and when benefit is measured, modification configuration is likely to shape
Into gratifying balance.Accordingly, it would be desirable to rotor is disassembled for several times and the risk of complex operations that resets be avoided or
Person is at least greatly decreased.Service intervention number of times is minimized so as to save considerable expense.Further, with relatively low meter
Burden is calculated, the method can define a class and potentially satisfactorily configure, and among optimal case is then present in such.
It is finally apparent that, in the case where the scope of the present invention defined in claims is departed from, can be right
Make a change and change in methods described and device.
Claims (14)
1. a kind of method of balance fuel gas turbine wheel (1), the gas turbine rotor (1) is with continuously arranging along line (A)
Multiple leaf dishes (2), methods described includes：
Obtain the misalignment measurement (ER1 ..., ERP) of the leaf dish (2) of reaction wheel (1) in initial configuration；
Based on misalignment measurement (ER1 ..., ERP), recognize at least two danger zones of rotor (1), wherein continuous leaf dish (2) it
Between eccentric change do not meet acceptance criteria；
At least first group continuous leaf dish (2) that identification is arranged between two danger zones；
Determine at least one corrective action of rotor (1), the corrective action is included in two continuous leaves of first group of leaf dish (2)
Rotating against around axle (A) between disk (2)；And
Perform the corrective action.
2. method according to claim 1, wherein identification is defined as at least two first groups of continuous leaf dishes of danger zone
(2) include：
The multiple second group of continuous leaf dish (2) of identification in rotor (1)；
For each second group of leaf dish (2), the interpolating function of leaf dish (2) corresponding points in each second group of leaf dish (2) of insertion is selected
(F)；
Based on each interpolating function (F) of each second group of leaf dish (2), the margin of tolerance (R) is defined；And
Recognize second group of leaf dish (2) as danger zone, indivedual misalignment measurements of wherein at least one leaf dish (2)
(ER1 ..., ERP) is outside each margin of tolerance (R).
3. method according to claim 2, wherein the interpolating function (F) is polynomial function.
4. method according to claim 3, wherein the interpolating function (F) is based on the leaf dish in each second group of leaf dish (2)
(2) misalignment measurement (ERJ, ERJ+1, ERJ+2；ERK, ERK+1, ERK+2) selected.
5. the method according to aforementioned any one claim, wherein obtain misalignment measurement (ER1 ..., ERP) including：
For each leaf dish (2), the rotary shaft (AR) with regard to rotor (1), eccentricity vector (E1 ..., EP), the bias are determined
The size of vectorial (E1 ..., EP) indicates leaf dish (2) bias amplitude, and its phase place indicates leaf dish (2) eccentric direction,
Determine result eccentricity vector (ER)；And
Be determined as according to result eccentricity vector (ER) eccentricity vector (E1 ..., EP) component misalignment measurement (ER1 ...,
ERP)。
6. the method according to aforementioned any one claim, wherein at least one correction for determining rotor (1) is arranged
Apply including：
Each for multiple modification configurations of rotor (1), determines the expected eccentric of all leaf dishes (2) of rotor (1)
(El ' ..., EP '), wherein the continuous leaf dish (2) of two of first group of leaf dish (2) relative to initial configuration with regard to being revolved each other
Turn；
For each modification configuration, quality parameter (PMR is calculated；IS；MEQ), the quality parameter (PMR；IS；MEQ) indicate to repair
Change the expected imbalance of rotor (1) in configuration；And
Select optimization quality parameter (PMR；IS；MEQ modification configuration).
7. method according to claim 6, wherein the modification configuration is including following configuration, for first group of leaf dish (2)
The continuous leaf dish of each pair (2), the leaf dish (2) in this pair of leaf dish (2) is relative to initial configuration with certain inclination, between certain
Every with regard to being rotated each other.
8. the method according to claim 6 or 7, including：
Determine the equilibrium index being associated with selected modification configuration of rotor (1), and
Equilibrium index is compared with threshold value.
9. the method according to aforementioned any one claim, including：
Obtain the renewal misalignment measurement of the leaf dish (2) with regard to rotary shaft (AR) of reaction wheel (1) in initial configuration
(El " ..., EP ")；
The balance check of rotor (1) is performed using the misalignment measurement (El " ..., EP ") for updating.
10. a kind of servicing unit of balance fuel gas turbine wheel, the gas turbine rotor is with along line (A) continuously arrangement
Multiple leaf dishes (2), described device includes：
Measuring instrument (12), for detecting rotary shaft (CR) of each leaf dish (2) relative to the rotor (1) being placed in support (13)
Eccentric related data；And
Treating stations (11), are used for：
Obtain the misalignment measurement (ER1 ..., ERP) of the leaf dish (2) of reaction wheel (1) in initial configuration；
Based on misalignment measurement (ER1 ..., ERP), recognize at least two danger zones of rotor (1), wherein continuous leaf dish (2) it
Between eccentric change do not meet acceptance criteria；
The continuous leaf dish of the least one set (2) that identification is arranged between two danger zones；And
Determine at least one corrective action of rotor (1), the corrective action is included in two continuous leaves of first group of leaf dish (2)
Rotating against around axle (A) between disk (2).
11. devices according to claim 10, wherein the treating stations (11) are used for：
The multiple second group of continuous leaf dish (2) of identification in rotor (1)；
For each second group of leaf dish (2), the interpolating function of leaf dish (2) corresponding points in each second group of leaf dish (2) of insertion is selected
(F)；
Based on each interpolating function (F) of each second group of leaf dish (2), the margin of tolerance (R) is defined；And
Recognize second group of leaf dish (2) as danger zone, indivedual misalignment measurements of wherein at least one leaf dish (2)
(ER1 ..., ERP) is outside the corresponding margin of tolerance (R).
12. devices according to claim 11, wherein the treating stations are used for based on the leaf dish in each second group of leaf dish (2)
(2) misalignment measurement (ERJ, ERJ+1, ERJ+2；ERK, ERK+1, ERK+2) carry out selection interpolating function (F).
13. devices according to any one of claim 10 to 12, wherein the treating stations are used for：
For each leaf dish (2), the rotary shaft (AR) for rotor (1) determines eccentricity vector (E1 ..., EP), it is described it is eccentric to
The size of amount (E1 ..., EP) indicates leaf dish (2) bias amplitude, and phase place indicates leaf dish (2) eccentric direction,
Determine result eccentricity vector (ER)；And
Be determined as according to result eccentricity vector (ER) eccentricity vector (E1 ..., EP) component misalignment measurement (ER1 ...,
ERP)。
14. devices according to any one in claim 10 to 13, wherein the treating stations are used for：
Each for the multiple modification configurations of rotor (1), determine all leaf dishes (2) of rotor (1) it is expected eccentric (El ' ...,
EP '), wherein the continuous leaf dish (2) of two of first group of leaf dish (2) relative to initial configuration with regard to being rotated each other；
For each modification configuration, quality parameter is calculated, rotor (1) is expected uneven in the quality parameter instruction modification configuration
Weighing apparatus；And
Select the modification configuration of optimization quality parameter.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITTO2014A000369 | 2014-05-09 | ||
| ITTO20140369 | 2014-05-09 | ||
| PCT/IB2015/053388 WO2015170296A1 (en) | 2014-05-09 | 2015-05-08 | Method and auxiliary apparatus for balancing a rotor of a gas turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106536857A true CN106536857A (en) | 2017-03-22 |
| CN106536857B CN106536857B (en) | 2018-07-03 |
Family
ID=51179059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580024251.6A Active CN106536857B (en) | 2014-05-09 | 2015-05-08 | The method and auxiliary device be balanced to gas turbine rotor |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3140513B1 (en) |
| CN (1) | CN106536857B (en) |
| WO (1) | WO2015170296A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111279172A (en) * | 2017-10-26 | 2020-06-12 | 赛峰飞机发动机公司 | Method for balancing a group of blades |
| CN115575038A (en) * | 2022-11-24 | 2023-01-06 | 中国航发沈阳发动机研究所 | Control method for reducing rotation inertia excitation of compressor rotor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3896252B1 (en) * | 2020-04-16 | 2023-04-12 | ANSALDO ENERGIA S.p.A. | Method and assembly for controlling the positioning of at least one rotor disc about a tie-rod of a partially assembled rotor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6341419B1 (en) * | 2000-02-29 | 2002-01-29 | General Electric Company | Loop stacked rotor assembly |
| US20080075592A1 (en) * | 2006-09-26 | 2008-03-27 | Axiam, Incorporated | Method and apparatus for geometric rotor stacking and balancing |
| EP2075406A2 (en) * | 2007-12-27 | 2009-07-01 | Pratt & Whitney Canada Corp. | Gas turbine rotor assembly method |
| US20090171491A1 (en) * | 2007-12-31 | 2009-07-02 | Karl Lee Borneman | Rotor Assembly System and Method |
-
2015
- 2015-05-08 EP EP15732349.4A patent/EP3140513B1/en active Active
- 2015-05-08 WO PCT/IB2015/053388 patent/WO2015170296A1/en active Application Filing
- 2015-05-08 CN CN201580024251.6A patent/CN106536857B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6341419B1 (en) * | 2000-02-29 | 2002-01-29 | General Electric Company | Loop stacked rotor assembly |
| US20080075592A1 (en) * | 2006-09-26 | 2008-03-27 | Axiam, Incorporated | Method and apparatus for geometric rotor stacking and balancing |
| EP2075406A2 (en) * | 2007-12-27 | 2009-07-01 | Pratt & Whitney Canada Corp. | Gas turbine rotor assembly method |
| US20090171491A1 (en) * | 2007-12-31 | 2009-07-02 | Karl Lee Borneman | Rotor Assembly System and Method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111279172A (en) * | 2017-10-26 | 2020-06-12 | 赛峰飞机发动机公司 | Method for balancing a group of blades |
| CN115575038A (en) * | 2022-11-24 | 2023-01-06 | 中国航发沈阳发动机研究所 | Control method for reducing rotation inertia excitation of compressor rotor |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3140513A1 (en) | 2017-03-15 |
| CN106536857B (en) | 2018-07-03 |
| EP3140513B1 (en) | 2019-04-24 |
| WO2015170296A1 (en) | 2015-11-12 |
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