CN106872286B - The computational methods and system of composite bushing electrical equipment connecting portion bending stiffness - Google Patents
The computational methods and system of composite bushing electrical equipment connecting portion bending stiffness Download PDFInfo
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- CN106872286B CN106872286B CN201710004158.XA CN201710004158A CN106872286B CN 106872286 B CN106872286 B CN 106872286B CN 201710004158 A CN201710004158 A CN 201710004158A CN 106872286 B CN106872286 B CN 106872286B
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- 238000006073 displacement reaction Methods 0.000 claims description 13
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- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
The present invention provides a kind of computational methods and system of composite bushing electrical equipment connecting portion bending stiffness.This method comprises the following steps:Bend test is carried out to whole column equipment, and determines the elasticity modulus of composite bushing according to test result；Bend test is carried out to the single-unit equipment where flange to be measured, and determines the elasticity modulus of the flange to be measured according to the elasticity modulus of test result and composite bushing；The bending stiffness of the flange to be measured is determined according to the elasticity modulus of the flange to be measured.The computational methods of composite bushing electrical equipment connecting portion bending stiffness provided by the invention, by the elasticity modulus for measuring composite bushing elasticity modulus and each section composite bushing connecting flange, and then obtain the bending stiffness at each section composite bushing flange mucilage binding position, equipment numerical value modeling accuracy is helped to improve, providing accurate data for the assessment of electrical equipment mechanical property supports.
Description
Technical field
The present invention relates to technical field of power systems, in particular to a kind of composite bushing electrical equipment connecting portion
The computational methods and system of bending stiffness.
Background technology
The bending stiffness of flange connections predicts electrical equipment for establishing electrical equipment numerical model, using numerical analysis
Safety important in inhibiting under the bad working environments such as earthquake, strong wind.Such as《Code for design of seismic of electrical installations》
It is proposed in GB50260-2013 about bending stiffness calculating formula at porcelain bushing shell vessel flange and porcelain bushing shell mucilage binding：In formula：KcFor bending stiffness, dcFor porcelain bushing shell mucilage binding position outer diameter, hcFor porcelain bushing shell and flange
Mucilage binding height, teClearance distance between flange and porcelain bushing shell.The specification also indicates that, when electrical equipment flange and porcelain bushing shell connect
When the bending stiffness connect is replaced with an Equivalent Beam Elements, the cross sectional moment of inertia of the beam element can be by formulaIt calculates.
However, the connection manufacturing process due to casing material, mucilage binding agent material, flange and casing is different, it is above-mentioned to be used for porcelain
The junction bending stiffness calculation formula of matter equipment is not particularly suited for composite material electrical equipment, at present for the electricity of composite material
The Study on flexural stiffness of gas equipment casing and flange connections is less, and lacking similar can be used to calculate composite material vessel flange
The bending stiffness empirical equation of junction, and the DC engineering built has been used composite material and has electrically been set more and more
Standby, a large amount of equipment complex is served in the different adverse circumstances such as Areas of High Earthquake Intensity region and high wind areas, how to design equipment
And its connection arrangement make mechanical property meet requirement be required to calculate demonstration, and calculate analysis in, casing flange connect
The bending stiffness of socket part position is an important parameter, and the safety which largely affects equipment mechanical property is commented
Estimate result.
Invention content
In consideration of it, the present invention proposes a kind of computational methods of composite bushing electrical equipment connecting portion bending stiffness and is
System, it is intended to solve to determine method, Jin Erying due to lacking the bending stiffness at composite material electrical equipment flanged joint position at present
The problem of ringing electrical equipment mechanical property security assessment result.
On one side, the present invention proposes a kind of computational methods of composite bushing electrical equipment connecting portion bending stiffness,
This method comprises the following steps:Bend test is carried out to whole column equipment, and determines the springform of composite bushing according to test result
Amount；Bend test is carried out to the single-unit equipment where flange to be measured, and true according to the elasticity modulus of test result and composite bushing
The elasticity modulus of the fixed flange to be measured；Determine that the bending resistance of the flange to be measured is rigid according to the elasticity modulus of the flange to be measured
Degree.Further, in the computational methods of above-mentioned composite bushing electrical equipment connecting portion bending stiffness, the bullet of the composite bushing
Property modulus determines that step further comprises：Multiple strain testing positions are set in the whole column equipment；By the whole column equipment
Bottom end fix, and apply different horizontal force F to the top of the whole column equipment1；Each strain testing position is detected respectively
Place's composite bushing is set in each horizontal force F1Dependent variable ε under effect；Each strain testing is determined according to the dependent variable ε
Composite bushing is in each horizontal force F at position1Elasticity modulus under effect；By composite bushing at each strain testing position
Casing is in each horizontal force F1The mean value of elasticity modulus under effect is determined as the elasticity modulus of the composite bushing.
Further, in the computational methods of above-mentioned composite bushing electrical equipment connecting portion bending stiffness, the basis is answered
Variable ε determines that composite bushing is in each horizontal force F at each strain testing position1Effect under elastic modulus E be specially：
According to formulaDetermine that composite bushing is in each horizontal force F at each strain testing position1Elasticity under effect
Modulus；In above formula, L is each strain testing position to each horizontal force F1The distance between position, W is each described
The section resistance moment of composite bushing at strain testing position.
Further, in the computational methods of above-mentioned composite bushing electrical equipment connecting portion bending stiffness, in the whole column
At least three strain testing positions are set along its length on the often section composite bushing of equipment；It will each strain testing position
In different level power F1The mean value of elasticity modulus under effect is determined as bullet of the composite bushing at the strain testing position
Property modulus.
Further, in the computational methods of above-mentioned composite bushing electrical equipment connecting portion bending stiffness, each strain
Test position is symmetrical arranged two strain testing points along the both sides of the composite bushing flexural deformation；It will be in same level power F1Make
The mean value of the dependent variable of composite bushing is determined as the strain testing at the strain testing point of same strain testing position both sides under
Composite bushing is in horizontal force F at position1Dependent variable ε under effect.
Further, in the computational methods of above-mentioned composite bushing electrical equipment connecting portion bending stiffness, the method to be measured
Blue elasticity modulus determines that step further comprises：The bottom end of the single-unit equipment to be measured is fixed, and to the single-unit to be measured
The top of equipment applies different horizontal force F2；The top of the single-unit equipment to be measured is detected respectively in each horizontal force F2Make
Displacement d under；Determine the single-unit equipment to be measured junction flange in each horizontal force F according to the displacement d2Make
Elasticity modulus under；By the top of the single-unit equipment to be measured in different level power F2The elasticity of junction flange under effect
The mean value of modulus is determined as the elasticity modulus of the flange to be measured.
Further, described according to position in the computational methods of above-mentioned composite bushing electrical equipment connecting portion bending stiffness
Shifting amount d determines the single-unit equipment to be measured junction flange in each horizontal force F2Elastic modulus E under effectfSpecially：Root
According to formulaDetermine the single-unit equipment to be measured junction flange in each horizontal force F2
Elasticity modulus under effect；In formula, LtFor the single-unit device length to be measured, LfFor the length of the flange to be measured, ItIt is described
The cross sectional moment of inertia of single-unit equipment to be measured, IfFor the cross sectional moment of inertia of the flange to be measured, E is the springform of the composite bushing
Amount.
It further, will be described to be measured in the computational methods of above-mentioned composite bushing electrical equipment connecting portion bending stiffness
The product of the elasticity modulus of flange and the flange cross sectional moment of inertia to be measured is determined as the bending stiffness of the flange to be measured.
The computational methods of composite bushing electrical equipment connecting portion bending stiffness provided by the invention, by whole column equipment
Bend test is carried out with equipment single-unit, measures the elasticity modulus of composite bushing elasticity modulus and flange to be measured, and then obtains single-unit
The bending stiffness at casing flange mucilage binding position helps to improve equipment numerical value modeling accuracy, is assessed for electrical equipment mechanical property
Accurate data are provided to support.
On the other hand, the invention also provides a kind of calculating systems of composite bushing electrical equipment connecting portion bending stiffness
System, the system include：Composite bushing elasticity modulus computing module, for carrying out bend test to whole column equipment, and according to experiment
As a result the elasticity modulus of composite bushing is determined；Flange elasticity modulus computing module to be measured, for the single-unit where flange to be measured
Equipment carries out bend test, and the springform of the flange to be measured is determined according to the elasticity modulus of test result and composite bushing
Amount；Flange bending stiffness computing module to be measured, for determining the anti-of the flange to be measured according to the flange elasticity modulus to be measured
Curved rigidity.
The computing system of the composite bushing electrical equipment connecting portion bending stiffness provided in the present invention, can calculate compound
The elasticity modulus of casing-tube elastic modulus and flange to be measured, and then determine the bending stiffness at single-unit casing flange mucilage binding position, test
And calculation process is simple and result precision is higher, helps to improve equipment numerical value modeling accuracy, is electrical equipment mechanical property
Assessment provides accurate data and supports.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field
Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 is the stream of the computational methods of composite bushing electrical equipment connecting portion bending stiffness provided in an embodiment of the present invention
Cheng Tu；
Fig. 2 be composite bushing electrical equipment connecting portion bending stiffness provided in an embodiment of the present invention computational methods again
One flow chart；
Fig. 3 be composite bushing electrical equipment connecting portion bending stiffness provided in an embodiment of the present invention computational methods again
One flow chart；
Fig. 4 be composite bushing electrical equipment connecting portion bending stiffness provided in an embodiment of the present invention computational methods in,
The bend test schematic diagram of whole column composite bushing；
Fig. 5 be composite bushing electrical equipment connecting portion bending stiffness provided in an embodiment of the present invention computational methods in,
The bend test schematic diagram of single-column composite bushing；
Fig. 6 is the knot of the computing system of composite bushing electrical equipment connecting portion bending stiffness provided in an embodiment of the present invention
Structure block diagram.
Specific implementation mode
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.It should be noted that in the absence of conflict, embodiment in the present invention and
Feature in embodiment can be combined with each other.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment of the method：
Referring to Fig. 1, Fig. 1 is the calculating of composite bushing electrical equipment connecting portion bending stiffness provided in an embodiment of the present invention
The flow chart of method.As shown, this method comprises the following steps：
Step S1 carries out bend test to whole column equipment, and determines the elasticity modulus of composite bushing according to test result.
Specifically, the whole column equipment with more piece casing is chosen, first fixes the bottom end of the whole column equipment, it is then whole to this
The top of column equipment applies horizontal force F1, horizontal force F1It is curved can finally to obtain composite bushing generation perpendicular to the whole column equipment
The relevant parameter of song deformation, and calculate according to the relevant parameter of acquisition the elasticity modulus of composite bushing.
Step S2 carries out bend test to the single-unit equipment where flange to be measured, and according to test result and composite bushing
Elasticity modulus determine the elasticity modulus of the flange to be measured.
Specifically, wherein one section of whole column equipment is chosen, and horizontal force F is applied to the section2Bend test is carried out, to obtain
The relevant parameter that the single-unit equipment occurs bending and deformation, and according to the bullet of the composite bushing obtained in the relevant parameter and step S1
Property modulus value calculates the elasticity modulus of flange to be measured, that is, the elasticity modulus of the composite bushing and flange mucilage binding position.It needs
It is noted that the single-unit equipment chosen includes the flange that composite bushing and the composite bushing are vertically connected with place.
Step S3 determines the bending stiffness of the flange to be measured according to the elasticity modulus of the flange to be measured.
Specifically, according to above-mentioned steps S2 be calculated as a result, can be by the elasticity modulus of flange to be measured and method to be measured
The product of blue cross sectional moment of inertia is determined as the bending stiffness of flange to be measured, that is, the bending resistance of any one section vessel flange junction
Rigidity.
As can be seen that in the present embodiment, by carrying out bend test to whole column equipment and single-unit equipment, composite bushing is measured
The elasticity modulus of elasticity modulus and flange to be measured, and then obtain the bending stiffness at single-unit vessel flange mucilage binding position, help to carry
High equipment numerical value modeling accuracy provides accurate data for the assessment of electrical equipment mechanical property and supports.
Referring to Fig. 2, in one embodiment of the invention, step S1 may further include：Sub-step S11, whole
Multiple strain testing positions are set in column equipment.
Specifically, multiple and different strain testing positions can be distributed along the length direction of composite bushing.For example, respectively answering
Becoming test position can respectively be chosen at top, middle part, bottom and the other positions of composite bushing.In addition, each strain is surveyed
Multiple strain testing points can be arranged on position in examination, each strain testing point can along composite bushing circumferential direction it is symmetrical.Referring to
Fig. 4, in the present embodiment, it is preferable that at least three can be arranged along its length on the often section composite bushing of whole column equipment and answer
Become test position.When it is implemented, two can be symmetrical arranged along the both sides of composite bushing flexural deformation in each strain testing position
A strain testing point.
Sub-step S12 fixes the bottom end of whole column equipment, and applies different horizontal force F to the top of whole column equipment1。
Specifically, the bottom end of whole column equipment is fixed on test platform, start is set in the side on whole column equipment top
Device, by actuator to applying horizontal force F perpendicular to whole column equipment axis and of different sizes at the top of composite bushing1.For example, water
Flat power F1It can be configured respectively according to 0.5 times, 1 times or 1.5 times of whole column equipment maximum machine load.
Sub-step S13 detects at each strain testing position composite bushing in each horizontal force F respectively1Dependent variable under effect
ε。
It specifically, can be in each strain testing position along symmetrically arranged two strains in composite bushing flexural deformation both sides
Foil gauge is respectively set at test point, the composite bushing at the strain testing position is in same level power F1Dependent variable under effect
ε can take at two strain testing points composite bushing in horizontal force F1The arithmetic mean of instantaneous value of dependent variable under effect.
Sub-step S14 determines that composite bushing is in each horizontal force F at each strain testing position according to dependent variable ε1Under effect
Elasticity modulus.
It specifically, can be according to formulaDetermine each strain testing position in each horizontal force F1Bullet under effect
Property modulus.In formula, L is each strain testing position to each horizontal force F1The distance between position, W is each strain testing position
Locate the section resistance moment of composite bushing.Any strain testing position is indicated with i, for example, i can take any integer in 1-12；Li
Indicate any strain testing position to each horizontal force F1The distance between position, εiIt is answered for two for same strain testing position i
Composite bushing is in different level power F at change test point1The arithmetic mean of instantaneous value of dependent variable test value under effect, WiIt is surveyed for each strain
Try the section resistance moment of composite bushing at position, EiIndicate that composite bushing is in each horizontal force F at any strain testing position1Under
Elasticity modulus, you can obtain：
Sub-step S15, by composite bushing at each strain testing position in each horizontal force F1Effect under elasticity modulus it is equal
Value is determined as the elasticity modulus of the composite bushing.
It specifically, can be by composite bushing at multiple strain testing positions of above-mentioned calculating in each horizontal force F1Under effect
Elasticity modulus of the arithmetic mean of instantaneous value of elasticity modulus as composite bushing.It should be noted that at a certain strain testing position
The E of composite bushingiThe deviation of the mean value of the elasticity modulus test value of composite bushing is big at test value and other strain testing positions
When 20%, the elasticity modulus test value of composite bushing can be cast out at the strain testing position, take remaining strain testing position
Locate elasticity modulus of the mean value of the elasticity modulus of composite bushing as composite bushing.I.e.：It can basisIt determines multiple
The elasticity modulus of trap pipe, n represent the quantity of strain testing position in whole column equipment.
As can be seen that the multiple strain testing positions of setting and the multiple strain testings of setting at each strain testing position
Point, the data precision obtained by multigroup experiment is high, further improves the standard of the elasticity modulus result of calculation of composite bushing
Exactness.
Referring to Fig. 3, in one embodiment of the invention, flange elasticity modulus to be measured determines that step S2 can be further
Including：
Sub-step S21 fixes the bottom end of single-unit equipment to be measured, and applies different water to the top of single-unit equipment to be measured
Flat power F2。
Specifically, the bottom flange of single-unit equipment to be measured is fixed on test platform, it can be by actuator to the single-unit
Apply horizontal force F perpendicular to single-unit equipment axis and of different sizes at the top of equipment2.For example, horizontal force F2It can be respectively according to list
0.5 times, 1 times or 1.5 times of section equipment maximum machine load is configured.
Sub-step S22 detects the top of single-unit equipment to be measured in each horizontal force F respectively2Displacement d under effect.
Specifically, displacement meter can be set at single-unit equipment to be measured top and the symmetrical position of actuator, according to position
It moves meter and measures single-unit equipment to be measured top in different level power F2Horizontal displacement under effect.
Sub-step S23 determines single-unit equipment to be measured junction flange in each horizontal force F according to displacement d2Bullet under effect
Property modulus.
It specifically, can be according to formulaDetermine single-unit equipment to be measured junction method
Orchid is in each horizontal force F2Elasticity modulus under effect.In formula, LtFor single-unit device length to be measured, LfFor the length of flange to be measured, It
For the cross sectional moment of inertia of single-unit equipment to be measured, IfFor the cross sectional moment of inertia of flange to be measured, E is the elasticity modulus of composite bushing.With j
Indicate any section composite bushing in whole column composite bushing, for example, j can take any integer in 1-4, then corresponding composite bushing
With the elastic modulus E at flange mucilage binding positionfjIt can indicate as follows：
In formula, LtjFor any single-unit device length, LfjFor any method to be measured
Blue length, ItjFor any section composite bushing cross sectional moment of inertia, IfjFor the cross sectional moment of inertia of any flange to be measured, E is compound sleeve
The elasticity modulus of pipe.
Sub-step S24, by single-unit equipment to be measured top in different level power F2The mean value of flange elasticity modulus under effect
It is determined as the elasticity modulus of flange to be measured.
Specifically, by single-unit equipment in each horizontal force F2Displacement d and relevant parameter under effect are brought into sub-step S23
Formula, each horizontal force F that will be calculated2The elasticity modulus measured under effect seeks arithmetic mean of instantaneous value, you can obtains method to be measured
Blue elasticity modulus.
Compound sleeve is often saved as can be seen that can be acquired according to the elasticity modulus of above-mentioned composite bushing and relevant parameter accordingly
The elasticity modulus of pipe and flange mucilage binding position, meanwhile, different size of horizontal force F is applied to equipment top2, improve any one
Save the accuracy in computation of composite bushing and the elasticity modulus at flange mucilage binding position.
Referring to Fig. 4 and Fig. 5, below by taking the whole column composite bushing equipment with four section composite bushings as an example, to the present embodiment
In method be described in more detail：
In installation process, when composite bushing flange has 2 or 2 or more mounting holes, when installation, should make two of which
Being symmetrically installed face that axially bored line is formed (under special circumstances, can be by stress side in actual use perpendicular to the direction of power
To).After installation, it should be ensured that whole column composite bushing is in upright state.
Whole column composite bushing bend test：Before experiment, first 1 surface of composite bushing is polished flat, in each section composite bushing 1
Each strain testing position at along composite bushing flexural deformation both sides symmetrically paste foil gauge 4, and should ensure that foil gauge 4 is trying
It is steadily pasted on the outer wall of composite bushing 1 always during testing.
When experiment, horizontal force F is applied to the connector 6 at the top of composite bushing equipment by actuator 31, F1Respectively according to whole
0.5 times, 1 times and 1.5 times of column equipment maximum machine mechanical load is configured.Wherein, under 0.5 times of maximum machine load
Experiment process is：It is negative smoothly to increase to 0.5 times of maximum machine from zero in 30s to the horizontal force applied at the top of composite bushing
Lotus.When reaching 0.5 times of maximum machine load, it should at least continue 30s.Each strain is measured by foil gauge 4 in during this period
Dependent variable of the symmetrically arranged two strain testings point in the both sides test position i under different level force effect, takes the equal of test value
Value εiAs the dependent variable of the test position, meanwhile, each strain testing position is measured to horizontal force F1The distance between position
Li, the section resistance moment W of the composite bushing at each strain testing positioni, wherein i=1-12.By horizontal force F1It fully sheds simultaneously
Record overstrain, it is ensured that composite bushing does not damage, and the dependent variable otherwise measured is invalid.Experiment under maximum machine load
Process is：Horizontal force should smoothly increase to maximum machine load in 30s from zero.It, should be extremely when reaching maximum machine load
Continue 30s less.Pass through 4 measuring strain amount of foil gauge in during this period.Horizontal force is fully shed to and is recorded overstrain, really
It protects composite bushing not damage, the dependent variable otherwise measured is invalid.Experiment process under 1.5 times of maximum machine loads is：Water
Flat power should smoothly increase to 1.5 times of maximum machine load in 30s from zero, and continue at least 60s under this load.Herein
During by 4 measuring strain amount of foil gauge, then load is steadily shed and records overstrain.Permit after load application
Perhaps overstrain is more than ± the 5% of maximum strain, but it is ensured that there is not visible damage, should be examined after load thrown off to zero
Look into whether end accessory cracks or destroy.By horizontal force F1Unloading, the bend test of whole column equipment terminate completely.It is obtained according to experiment
The process that the data taken are calculated is referring to above method embodiment, and details are not described herein again.
Single-unit instrument bend test：Any one 1 bottom of section equipment is fixed on testing stand, the company at the top of composite bushing
Displacement meter 5 is arranged in one end of fitting 6, by the actuator 3 of other side connection at the top of composite bushing to composite bushing equipment top
Connector 6 apply different level power F2, apply different level power F2The specific steps for measuring elasticity modulus, referring to above-mentioned whole
Application horizontal force F in the bend test of column composite bushing1The step of, details are not described herein again.List to be measured is measured by displacement meter 5
Displacement d of the top of equipment under each horizontal force action is saved, and measures section composite bushing length Lt, the flange 2 to be measured
Length Lf, section composite bushing cross sectional moment of inertia It, the cross sectional moment of inertia I of the flange 2 to be measuredf, by horizontal force F2Unloading, single-unit
The bend test of equipment terminates.The process that the data obtained according to experiment are calculated is referring to above method embodiment, herein not
It repeats again.
In conclusion in the present embodiment, by carrying out bend test to whole column equipment and single-unit equipment, composite bushing is measured
The elasticity modulus of elasticity modulus and flange to be measured, and then obtain the bending stiffness at single-unit vessel flange mucilage binding position, help to carry
High equipment numerical value modeling accuracy provides accurate data for the assessment of electrical equipment mechanical property and supports.
Device embodiment：
Referring to Fig. 6, composite bushing electrical equipment connecting portion bending stiffness provided in an embodiment of the present invention is shown in figure
Computing system structure diagram.As shown, the computing system includes：It is composite bushing elasticity modulus computing module 100, to be measured
Flange elasticity modulus computing module 200, flange bending stiffness computing module 300 to be measured.
Wherein, composite bushing elasticity modulus computing module 100 be used for for whole column equipment carry out bend test, and according to
Test result determines the elasticity modulus of composite bushing.It should be noted that composite bushing elasticity modulus computing module 100 is specific
Implementation process is referring to above method embodiment, and details are not described herein for the present embodiment.
Flange elasticity modulus computing module 200 to be measured is used to carry out bend test to the single-unit equipment where flange to be measured,
And the elasticity modulus of flange to be measured is determined according to the elasticity modulus of test result and composite bushing.It should be noted that method to be measured
For the specific implementation process of blue elasticity modulus computing module 200 referring to above method embodiment, the present embodiment is no longer superfluous herein
It states.
The bending stiffness computing module 300 of flange to be measured is used to determine flange to be measured according to the elasticity modulus of flange to be measured
Bending stiffness.It should be noted that the specific implementation process of the bending stiffness computing module 300 of flange to be measured is referring to the above method
Embodiment, details are not described herein for the present embodiment.
In the present embodiment, by first calculating the elasticity modulus of composite bushing elasticity modulus and flange to be measured, and then determine
The bending stiffness at single-unit vessel flange mucilage binding position, test and calculation process are simply and result precision is higher, help to improve
Equipment numerical value modeling accuracy provides accurate data for the assessment of electrical equipment mechanical property and supports.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, the application can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is with reference to method, the flow of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. a kind of computational methods of composite bushing electrical equipment connecting portion bending stiffness, which is characterized in that include the following steps：
Bend test is carried out to whole column equipment, and determines the elasticity modulus of composite bushing according to test result；
Bend test is carried out to the single-unit equipment where flange to be measured, and true according to the elasticity modulus of test result and composite bushing
The elasticity modulus of the fixed flange to be measured；
The bending stiffness of the flange to be measured is determined according to the elasticity modulus of the flange to be measured；
The elasticity modulus determines that step further comprises：
The bottom end of the single-unit equipment to be measured is fixed, applies different horizontal force F to the top of the single-unit equipment to be measured2；
The top of the single-unit equipment to be measured is detected respectively in each horizontal force F2Displacement d under effect；
Determine the single-unit equipment to be measured junction flange in each horizontal force F according to the displacement d2Elasticity under effect
Modulus；
By the single-unit equipment to be measured top in different level power F2The mean value of flange elasticity modulus under effect is determined as described wait for
Survey the elasticity modulus of flange；
It is described to determine the single-unit equipment connecting flange to be measured in each horizontal force F according to displacement d2Springform under effect
Measure EfSpecially：According to formulaDetermine single-unit equipment to be measured junction flange each
Locate the horizontal force F2Elasticity modulus under effect；
Among the above, IfFor the cross sectional moment of inertia of the flange to be measured, E is the elasticity modulus of the flange to be measured, LtIt is described to be measured
Single-unit device length, LfFor the length of the flange to be measured, ItFor the cross sectional moment of inertia of the single-unit equipment casing to be measured.
2. the computational methods of composite bushing electrical equipment connecting portion bending stiffness according to claim 1, feature exist
In the elasticity modulus of the composite bushing determines that step further comprises：
Multiple strain testing positions are set in the whole column equipment；
The bottom end of the whole column equipment is fixed, and applies different horizontal force F to the top of the whole column equipment1；
Composite bushing is detected at each strain testing position respectively in each horizontal force F1Dependent variable ε under effect；
Determine that composite bushing is in each horizontal force F at each strain testing position according to the dependent variable ε1Bullet under effect
Property modulus；
By composite bushing at each strain testing position in each horizontal force F1The mean value of elasticity modulus under effect is determined as
The elasticity modulus of the composite bushing.
3. the computational methods of composite bushing electrical equipment connecting portion bending stiffness according to claim 2, feature exist
In described to determine at each strain testing position the composite bushing throughout horizontal force F according to dependent variable ε1Under effect
Elastic modulus E is specially：
According to formulaDetermine that composite bushing is in each horizontal force F at each strain testing position1Bullet under effect
Property modulus；
In above formula, L is each strain testing position to the horizontal force F1The distance between position, W is each strain
The section resistance moment of each composite bushing at test position.
4. the computational methods of composite bushing electrical equipment connecting portion bending stiffness according to claim 2, feature exist
In at least three strain testing positions are arranged along its length on the often section composite bushing of the whole column equipment；
By composite bushing at each strain testing position in different level power F1The mean value of elasticity modulus under effect is determined as
Elasticity modulus of the composite bushing at the strain testing position.
5. the computational methods of composite bushing electrical equipment connecting portion bending stiffness according to claim 2, feature exist
In the strain testing position is symmetrical arranged two strain testing points along the both sides of the composite bushing Bending Deformation；
It will be in same level power F1The dependent variable of composite bushing at the strain testing point of same strain testing position both sides under effect
Mean value is determined as at the strain testing position composite bushing in horizontal force F1Dependent variable ε under effect.
6. the computational methods of composite bushing electrical equipment connecting portion bending stiffness according to claim 2, feature exist
In the product of the elasticity modulus of the flange to be measured and the flange cross sectional moment of inertia to be measured is determined as the flange to be measured
Bending stiffness.
7. a kind of calculating side for the composite bushing electrical equipment connecting portion bending stiffness realized as described in claim 1-6 is any
The computing system of method, which is characterized in that including：Composite bushing elasticity modulus computing module (100), for being carried out to whole column equipment
Bend test, and determine according to test result the elasticity modulus of composite bushing；Flange elasticity modulus computing module (200) to be measured,
For carrying out bend test to the single-unit equipment where flange to be measured, and it is true according to the elasticity modulus of test result and composite bushing
The elasticity modulus of the fixed flange to be measured；
Flange bending stiffness computing module (300) to be measured, for determining the method to be measured according to the flange elasticity modulus to be measured
Blue bending stiffness.
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| CN110763558A (en) * | 2019-11-01 | 2020-02-07 | 苏州科联建设工程质量检测有限公司 | Elastic modulus measuring method and measuring instrument |
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| CN104897479B (en) * | 2014-12-12 | 2016-11-23 | 国家电网公司 | A kind of composite support insulator mechanical property comprehensive detection system |
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