CN103034756B - A kind of rotor module data creation method for generator Shafting calculation - Google Patents
A kind of rotor module data creation method for generator Shafting calculation Download PDFInfo
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- CN103034756B CN103034756B CN201210507623.9A CN201210507623A CN103034756B CN 103034756 B CN103034756 B CN 103034756B CN 201210507623 A CN201210507623 A CN 201210507623A CN 103034756 B CN103034756 B CN 103034756B
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- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The invention provides a kind of rotor module data creation method for generator Shafting calculation, with MathCAD software programming versatility calculation procedure, first calculating generator body cross sectional moment of inertia, then modularization is carried out to generator, calculate the parameters such as the moment of inertia of each segmentation module, weight, then export required various axle coefficient certificate.Method provided by the invention overcomes the deficiencies in the prior art, by the computing module of axle coefficient certificate, arrangement and the output of axle coefficient certificate can be carried out quickly and easily, reduce the error rate of data processing, the data layout being applicable to Shafting calculation can be generated fast simultaneously, avoid loaded down with trivial details manual input process.
Description
Technical field
The present invention relates to a kind of rotor module data creation method for generator Shafting calculation, be applicable to the rotating machinery such as generator, exciter, belong to the technical field that generator transverse vibration of shafting force characteristic calculates and improves.
Background technology
Generator power property calculation is an important step in generator designs early stage, relating to the bearing dynamic parameter of generator shaft system, the horizontal key parameter such as critical rotary speed, transient equilibrium that shakes, is the important parameter ensureing can normally run after generator manufacture is produced.
Generator power property calculation is also called Shafting calculation, needs shaft to carry out modularized processing early stage, be converted into segmented model, calculate the parameters such as the weight of each segmented model, moment of inertia by axle system drawing at Shafting calculation.
Computing method in the past divide shaft part by handwritten formula to rotor, then takes passages out one by one by armature spindle segment data, and according to required form write text document, last loading routine calculates.For the Shafting calculation of high-rating generator, such process is huge and loaded down with trivial details, easily makes mistakes, and not easily revises.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of rotor module data creation method for generator Shafting calculation, modularization is carried out to rotor, to facilitate the various axle coefficient certificates needed for generation, and shaft data carry out format conversion, generate the data layout being applicable to Shafting calculation.
In order to solve the problems of the technologies described above, technical scheme of the present invention is to provide a kind of rotor module data creation method for generator Shafting calculation, it is characterized in that: the method is made up of following 3 steps:
Step 1: the calculating of body cross sectional moment of inertia, weight;
The moment of inertia I of wire casing
c:
The moment of inertia I of wire
d:
Body cross sectional moment of inertia I:
This body weight W:
Wherein, Z
0for bus duct number, I
0be the moment of inertia of a groove, F
cbe the area of a groove, R
cbe the radius of gravity center of a groove, Z is the groove number of divisions, E
dfor wire elastic modulus, E is this bulk modulus, F
dbe the area of a groove inside conductor, R
dbe the radius of gravity center of a groove inside conductor, D is body diameter, bore dia centered by d, and ρ is bulk density, and L is body length, ρ
dfor wire density;
Step 2: rotor moduleization calculates, because the shape of each shaft part of rotor, size are different, therefore needs to adopt the different moment of inertia of computing method to each shaft part to calculate;
A. cylindrical shape shaft part:
Cylindrical shape shaft part moment of inertia I
1:
Cylindrical shape shaft part weight W
1:
Wherein, D
1ofor cylindrical shape shaft part external diameter, D
1ifor cylindrical shape shaft part internal diameter, ρ
1for cylindrical shape shaft part density, L
1for cylindrical shape shaft part length;
B. truncated conical shape shaft part:
Truncated conical shape shaft part moment of inertia I
2:
Truncated conical shape shaft part weight W
2:
Wherein, D
2ofor the large external diameter of truncated conical shape shaft part, D
2ifor truncated conical shape shaft part internal diameter, D
2for the little external diameter of truncated conical shape shaft part, ρ
2for truncated conical shape shaft part density, L
2for truncated conical shape shaft part length;
C. shaft coupling shaft part:
Shaft coupling shaft part moment of inertia I
3:
Shaft coupling shaft part weight W
3:
Wherein, D
3ofor shaft coupling shaft part external diameter, D
3ifor shaft coupling shaft part internal diameter, ρ
3for shaft coupling shaft part density, L
3for shaft coupling shaft part length, W
cpfor shaft coupling weight;
Step 3: the interface utilizing MathCAD software and Excel, exports required various axle coefficient certificate.
A kind of rotor module data creation method for generator Shafting calculation provided by the invention for adopt MathCAD software for mathematical computing to complete under windows operating system.
Method provided by the invention overcomes the deficiencies in the prior art, by the computing module of axle coefficient certificate, arrangement and the output of axle coefficient certificate can be carried out quickly and easily, reduce the error rate of data processing, the data layout being applicable to Shafting calculation can be generated fast simultaneously, avoid loaded down with trivial details manual input process.
Accompanying drawing explanation
Fig. 1 is a kind of rotor module data creation method process flow diagram for generator Shafting calculation provided by the invention;
Fig. 2 is the rotor module figure calculated in the present embodiment;
Fig. 3 is by the horizontal first-order bending vibation mode picture of shaking of generator that shaft part data calculate in the present embodiment;
Fig. 4 is with the horizontal second_mode figure that shakes of generator that shaft part data calculate in the present embodiment;
Embodiment
For making the present invention become apparent, hereby with a preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Fig. 1 is the process flow diagram of a kind of rotor module data creation method for generator Shafting calculation provided by the invention, and described a kind of rotor module data creation method concrete steps for generator Shafting calculation are as follows:
Step 1: the calculating of body cross sectional moment of inertia, weight;
The moment of inertia I of wire casing
c:
The moment of inertia I of wire
d:
Body cross sectional moment of inertia I:
This body weight W:
Wherein, Z
0for bus duct number, I
0be the moment of inertia of a groove, F
cbe the area of a groove, R
cbe the radius of gravity center of a groove, Z is the groove number of divisions, E
dfor wire elastic modulus, E is this bulk modulus, F
dbe the area of a groove inside conductor, R
dbe the radius of gravity center of a groove inside conductor, D is body diameter, bore dia centered by d, and ρ is bulk density, and L is body length, ρ
dfor wire density;
Step 2: rotor moduleization calculates, because the shape of each shaft part of rotor, size are different, therefore
Need to adopt the different moment of inertia of computing method to each shaft part to calculate;
A. cylindrical shape shaft part:
Cylindrical shape shaft part moment of inertia I
1:
Cylindrical shape shaft part weight W
1:
Wherein, D
1ofor cylindrical shape shaft part external diameter, D
1ifor cylindrical shape shaft part internal diameter, ρ
1for cylindrical shape shaft part density, L
1for cylindrical shape shaft part length;
B. truncated conical shape shaft part:
Truncated conical shape shaft part moment of inertia I
2:
Truncated conical shape shaft part weight W
2:
Wherein, D
2ofor the large external diameter of truncated conical shape shaft part, D
2ifor truncated conical shape shaft part internal diameter, D
2for the little external diameter of truncated conical shape shaft part, ρ
2for truncated conical shape shaft part density, L
2for truncated conical shape shaft part length;
C. shaft coupling shaft part:
Shaft coupling shaft part moment of inertia I
3:
Shaft coupling shaft part weight W
3:
Wherein, D
3ofor shaft coupling shaft part external diameter, D
3ifor shaft coupling shaft part internal diameter, ρ
3for shaft coupling shaft part density, L
3for shaft coupling shaft part length, W
cpfor shaft coupling weight;
Step 3: the interface utilizing MathCAD software and Excel, exports required various axle coefficient certificate.
In the present embodiment, under windows operating system, adopt MathCAD software programming body cross sectional moment of inertia calculation procedure and rotor module calculation procedure, meanwhile, utilize the Excel interface of MathCAD software to carry out rotor module data layout and transform.
For QF-141 generator, its rotor module concrete steps are as follows:
The first step: open body cross sectional moment of inertia MathCAD, input body cross-section data, bus duct number Z
0the moment of inertia I of=32, groove
0=2.113 × 10
3cm
4, the area F of a groove
c=70.371cm
2, the radius of gravity center R of a groove
c=42.102cm, groove number of divisions Z=46, wire elastic modulus E
d=1.2 × 10
6mPa, body elastic modulus E=2.1 × 10
6mPa, the area F of a groove inside conductor
d=31.32cm
2, the radius of gravity center R of a groove inside conductor
d=42.229cm, body diameter D=102cm, center-hole diameter d=0, bulk density ρ=7.85 × 10
3kg/m
3, body length L=452cm, wire density ρ
d=8.9 × 10
3kg/m
3, calculate:
The moment of inertia I of wire casing
c: I
c=2.791 × 10
6cm
4
The moment of inertia I of wire
d: I
d=7.021 × 10
5cm
4
Body cross sectional moment of inertia I:I=3.225 × 10
6cm
4
This body weight W:W=2.504 × 10
4kg
Second step: open rotor module MathCAD, input the parameters such as each shaft part external diameter, internal diameter, length, weight, calculate moment of inertia and the weight of each shaft part, result of calculation is as follows:
3rd step: open the Excel interface in rotor module MathCAD, according to demand, output shaft segment data form, the horizontal single order that shakes shown in the rotor module figure shown in the Fig. 2 obtained and Fig. 3, Fig. 4, second_mode figure.
The invention provides a kind of rotor module data creation method for generator Shafting calculation, overcome the deficiencies in the prior art, by the computing module of axle coefficient certificate, arrangement and the output of axle coefficient certificate can be carried out quickly and easily, reduce the error rate of data processing, the data layout being applicable to Shafting calculation can be generated fast simultaneously, avoid loaded down with trivial details manual input process.
Claims (1)
1. for a rotor module data creation method for generator Shafting calculation, it is characterized in that: the method is made up of following 3 steps:
Step 1: the calculating of body cross sectional moment of inertia, weight;
The moment of inertia I of wire casing
c:
The moment of inertia I of wire
d:
Body cross sectional moment of inertia I:
This body weight W:
Wherein, Z
0for bus duct number, I
0be the moment of inertia of a groove, F
cbe the area of a groove, R
cbe the radius of gravity center of a groove, Z is the groove number of divisions, E
dfor wire elastic modulus, E is this bulk modulus, F
dbe the area of a groove inside conductor, R
dbe the radius of gravity center of a groove inside conductor, D is body diameter, bore dia centered by d, and ρ is bulk density, and L is body length, ρ
dfor wire density;
Step 2: rotor moduleization calculates, because the shape of each shaft part of rotor, size are different, therefore needs to adopt the different moment of inertia of computing method to each shaft part to calculate;
A. cylindrical shape shaft part:
Cylindrical shape shaft part moment of inertia I
1:
Cylindrical shape shaft part weight W
1:
Wherein, D
1ofor cylindrical shape shaft part external diameter, D
1ifor cylindrical shape shaft part internal diameter, ρ
1for cylindrical shape shaft part density, L
1for cylindrical shape shaft part length;
B. truncated conical shape shaft part:
Truncated conical shape shaft part moment of inertia I
2:
Truncated conical shape shaft part weight W
2:
Wherein, D
2ofor the large external diameter of truncated conical shape shaft part, D
2ifor truncated conical shape shaft part internal diameter, D
2for the little external diameter of truncated conical shape shaft part, ρ
2for truncated conical shape shaft part density, L
2for truncated conical shape shaft part length;
C. shaft coupling shaft part:
Shaft coupling shaft part moment of inertia I
3:
Shaft coupling shaft part weight W
3:
Wherein, D
3ofor shaft coupling shaft part external diameter, D
3ifor shaft coupling shaft part internal diameter, ρ
3for shaft coupling shaft part density, L
3for shaft coupling shaft part length, W
cpfor shaft coupling weight;
Step 3: the interface utilizing MathCAD software and Excel, exports required various axle coefficient certificate.
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CN201210507623.9A CN103034756B (en) | 2012-11-30 | 2012-11-30 | A kind of rotor module data creation method for generator Shafting calculation |
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Citations (1)
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CN101178335A (en) * | 2007-11-29 | 2008-05-14 | 浙江大学 | Synchronized dual rotors system inside and outside rotor unbalance value quick recognizing methods |
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JP4803733B2 (en) * | 2006-08-03 | 2011-10-26 | 学校法人東海大学 | Grooved dynamic pressure thrust gas bearing and method of manufacturing the same |
US20100064801A1 (en) * | 2008-04-03 | 2010-03-18 | Hylton Peter D | Method for balancing supercritical shafts |
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CN101178335A (en) * | 2007-11-29 | 2008-05-14 | 浙江大学 | Synchronized dual rotors system inside and outside rotor unbalance value quick recognizing methods |
Non-Patent Citations (2)
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1000MW汽轮发电机组轴系扭振特性的计算分析;张燕 等;《华东电力》;20080331;第36卷(第3期);98-100 * |
南通天生港发电厂#8机组发电机转子断裂接轴修理方案可行性分析;黄兆款 等;《上海大中型电机》;20031231;28-30 * |
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