CN106872286A - 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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- CN106872286A CN106872286A CN201710004158.XA CN201710004158A CN106872286A CN 106872286 A CN106872286 A CN 106872286A CN 201710004158 A CN201710004158 A CN 201710004158A CN 106872286 A CN106872286 A CN 106872286A
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Abstract
The invention provides a kind of computational methods and system of composite bushing electrical equipment connecting portion bending stiffness.The method comprises the following steps:Bend test is carried out to whole post equipment, and the elastic modelling quantity of composite bushing is determined according to result of the test；Bend test is carried out to the single-unit equipment where flange to be measured, and the elastic modelling quantity of the flange to be measured is determined according to the elastic modelling quantity of result of the test and composite bushing；Elastic modelling quantity according to the flange to be measured determines the bending rigidity of the flange to be measured.The computational methods of the composite bushing electrical equipment connecting portion bending stiffness that the present invention is provided, by the elastic modelling quantity for determining composite bushing elastic modelling quantity and each section composite bushing adpting flange, and then draw the bending rigidity at each section composite bushing flange mucilage binding position, equipment numerical value modeling accuracy is favorably improved, is supported for the assessment of electrical equipment mechanical property provides accurate data.
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 setting up electrical equipment numerical model using numerical analysis
Security important in inhibiting under the bad working environments such as earthquake, strong wind.For example《Code for design of seismic of electrical installations》
Proposed in GB50260-2013 on bending stiffness calculating formula at porcelain bushing shell vessel flange and porcelain bushing shell mucilage binding：In formula：KcIt is bending stiffness, dcIt is porcelain bushing shell mucilage binding position external diameter, hcIt is porcelain bushing shell and flange
Mucilage binding highly, teIt is the clearance distance between flange and porcelain bushing shell.The specification is also indicated that, when electrical equipment flange and porcelain bushing shell connect
When the bending stiffness for connecing is replaced with an Equivalent Beam Elements, the cross sectional moment of inertia of the beam element can be by formulaCalculate.
However, because sleeve pipe material, mucilage binding agent material, flange are different with the connection manufacturing process of sleeve pipe, it is above-mentioned for porcelain
The junction bending stiffness computing formula of matter equipment is not particularly suited for composite electrical equipment, at present for the electricity of composite
Gas equipment casing is less with the Study on flexural stiffness of flange connections, and lacking similar can be used to calculate composite vessel flange
The bending stiffness empirical equation of junction, and the DC engineering built has been used composite and has electrically been set more and more
Standby, substantial amounts 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 use 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 that the value degree of accuracy largely affects equipment mechanical property is commented
Estimate result.
The content of the invention
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 which solution determines method, Jin Erying due to lacking the bending stiffness of composite electrical equipment flange connecting portion at present
Ring the problem of electrical equipment mechanical property security evaluation result.
On one side, the present invention proposes a kind of computational methods of composite bushing electrical equipment connecting portion bending stiffness,
The method comprises the following steps:Bend test is carried out to whole post equipment, and the springform of composite bushing is determined according to result of the test
Amount；Bend test is carried out to the single-unit equipment where flange to be measured, and it is true according to the elastic modelling quantity of result of the test and composite bushing
The elastic modelling quantity of the fixed flange to be measured；Elastic modelling quantity according to the flange to be measured determines that the bending resistance of the flange to be measured is firm
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 is further included：Multiple strain testing positions are set in the whole post equipment；By the whole post equipment
Bottom fix, and apply different horizontal force F to the top of the whole post equipment1；Each strain testing position is detected respectively
Place's composite bushing is put 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 position1Elastic modelling quantity under effect；By composite bushing at each strain testing position
Sleeve pipe is in each horizontal force F1The average of the elastic modelling quantity under effect is defined as the elastic modelling quantity of the composite bushing.
Further, in the computational methods of above-mentioned composite bushing electrical equipment connecting portion bending stiffness, the basis should
Variable ε determines that composite bushing is in each horizontal force F at each strain testing position1Elastic modulus E under effect is 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 application point, W is each described
The section resistance moment of the 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 post
At least three strain testing positions are set along its length on the often section composite bushing of equipment；By each strain testing position
In varying level power F1The average of the elastic modelling quantity under effect is defined 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；Will be in same level power F1Make
The average of the dependent variable of composite bushing is defined 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 elastic modelling quantity determines that step is further included：The bottom 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；Detect the top of the single-unit equipment to be measured in each horizontal force F respectively2Make
Displacement d under；Determine the single-unit equipment junction flange to be measured in each horizontal force F according to the displacement d2Make
Elastic modelling quantity under；By the top of the single-unit equipment to be measured in varying level power F2The elasticity of the junction flange under effect
The average of modulus is defined as the elastic modelling quantity of the flange to be measured.
Further, it is 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 junction flange to be measured in each horizontal force F2Elastic modulus E under effectfSpecially：Root
According to formulaDetermine the single-unit equipment junction flange to be measured in each horizontal force F2
Elastic modelling quantity under effect；In formula, LtIt is the single-unit device length to be measured, LfIt is the length of the flange to be measured, ItFor described
The cross sectional moment of inertia of single-unit equipment to be measured, IfIt is the cross sectional moment of inertia of the flange to be measured, E is the springform of the composite bushing
Amount.
Further, in the computational methods of above-mentioned composite bushing electrical equipment connecting portion bending stiffness, will be described to be measured
The elastic modelling quantity of flange is defined as the bending rigidity of the flange to be measured with the product of the flange cross sectional moment of inertia to be measured.
The computational methods of the composite bushing electrical equipment connecting portion bending stiffness that the present invention is provided, by whole post equipment
Bend test is carried out with equipment single-unit, the elastic modelling quantity of composite bushing elastic modelling quantity and flange to be measured is determined, and then draws single-unit
The bending rigidity at casing flange mucilage binding position, is favorably improved equipment numerical value modeling accuracy, is the assessment of electrical equipment mechanical property
Accurate data are provided to support.
On the other hand, the invention allows for a kind of calculating system of composite bushing electrical equipment connecting portion bending stiffness
System, the system includes：Composite bushing elastic modelling quantity computing module, for carrying out bend test to whole post equipment, and according to experiment
Result determines the elastic modelling quantity of composite bushing；Flange elastic modelling quantity 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 elastic modelling quantity of result of the test and composite bushing
Amount；Flange bending rigidity computing module to be measured, for determining the anti-of the flange to be measured according to the flange elastic modelling quantity 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 elastic modelling quantity of casing-tube elastic modulus and flange to be measured, and then determine the bending rigidity at single-unit casing flange mucilage binding position, test
And calculation process is simple and result precision is higher, is favorably improved equipment numerical value modeling accuracy, is electrical equipment mechanical property
Assessment provides accurate data and supports.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.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 the computational methods of composite bushing electrical equipment connecting portion bending stiffness provided in an embodiment of the present invention again
One flow chart；
Fig. 3 be the computational methods of composite bushing electrical equipment connecting portion bending stiffness provided in an embodiment of the present invention again
One flow chart；
During Fig. 4 is the computational methods of composite bushing electrical equipment connecting portion bending stiffness provided in an embodiment of the present invention,
The bend test schematic diagram of whole post composite bushing；
During Fig. 5 is the computational methods of composite bushing electrical equipment connecting portion bending stiffness provided in an embodiment of the present invention,
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 embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.Conversely, there is provided these embodiments are able to be best understood from the disclosure, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.It should be noted that in the case where not conflicting, embodiment in the present invention and
Feature in embodiment can be mutually combined.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the 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 illustrated, the method comprises the following steps：
Step S1, bend test is carried out to whole post equipment, and the elastic modelling quantity of composite bushing is determined according to result of the test.
Specifically, the whole post equipment with more piece sleeve pipe is chosen, first the bottom of the whole post equipment is fixed, it is then whole to this
The top of post equipment applies horizontal force F1, horizontal force F1Composite bushing generation can be finally obtained perpendicular to the whole post equipment curved
The relevant parameter of song deformation, and the elastic modelling quantity of composite bushing is calculated according to the relevant parameter for obtaining.
Step S2, bend test is carried out to the single-unit equipment where flange to be measured, and according to result of the test and composite bushing
Elastic modelling quantity determine the elastic modelling quantity of the flange to be measured.
Specifically, wherein one section of whole post 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 calculate the elastic modelling quantity of flange to be measured, that is, the composite bushing and flange mucilage binding position elastic modelling quantity.Need
It is noted that the single-unit equipment chosen includes that composite bushing and the composite bushing are vertically connected with the flange at place.
Step S3, the elastic modelling quantity according to the flange to be measured determines the bending rigidity of the flange to be measured.
Specifically, the result for being calculated according to above-mentioned steps S2, can be by the elastic modelling quantity of flange to be measured and method to be measured
The product of blue cross sectional moment of inertia is defined as the bending rigidity of flange to be measured, that is, any one bending resistance for saving vessel flange junction
Rigidity.
As can be seen that in the present embodiment, by carrying out bend test to whole post equipment and single-unit equipment, determining composite bushing
The elastic modelling quantity of elastic modelling quantity and flange to be measured, and then the bending rigidity at single-unit vessel flange mucilage binding position is drawn, help to carry
Equipment numerical value modeling accuracy high, supports for the assessment of electrical equipment mechanical property provides accurate data.
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 post equipment.
Specifically, multiple different strain testing positions can be distributed along the length direction of composite bushing.For example, respectively should
Becoming test position can be chosen at the top of composite bushing, middle part, bottom and other positions respectively.Additionally, each strain is surveyed
Examination can set multiple strain testing points on position, and each strain testing point can be symmetrical along the circumference of composite bushing.Referring to
Fig. 4, in the present embodiment, it is preferable that at least three can be along its length set on the often section composite bushing of whole post equipment should
Become test position.During specific implementation, two can be symmetrical arranged along the both sides of composite bushing flexural deformation in each strain testing position
Individual strain testing point.
Sub-step S12, the bottom of whole post equipment is fixed, and applies different horizontal force F to the top of whole post equipment1。
Specifically, the bottom of whole post equipment is fixed on test platform, start is set in the side on whole post equipment top
Device, is applied perpendicular to whole post equipment axis and horizontal force F of different sizes by actuator to composite bushing top1.For example, water
Flat power F1Can be configured according to 0.5 times, 1 times or 1.5 times of whole post equipment maximum machine load respectively.
Sub-step S13, detects that composite bushing is in each horizontal force F at each strain testing position respectively1Dependent variable under effect
ε。
Specifically, can be in each strain testing position along symmetrically arranged two strains in composite bushing flexural deformation both sides
Foil gauge is respectively provided with 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 the 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
Elastic modelling quantity.
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 application point, W is each strain testing position
Locate the section resistance moment of composite bushing.Any strain testing position is represented with i, for example, i can take any integer in 1-12；Li
Represent any strain testing position to each horizontal force F1The distance between application point, εiAnswered for two for same strain testing position i
Composite bushing is in varying level power F at change test point1The arithmetic mean of instantaneous value of the dependent variable test value under effect, WiFor each strain is surveyed
The section resistance moment of composite bushing, E at examination positioniRepresent that composite bushing is in each horizontal force F at any strain testing position1Under
Elastic modelling quantity, you can obtain：
Sub-step S15, by composite bushing at each strain testing position in each horizontal force F1Effect under elastic modelling quantity it is equal
Value is defined as the elastic modelling quantity of the composite bushing.
Specifically, can be by composite bushing at multiple strain testing positions of above-mentioned calculating in each horizontal force F1Under effect
The arithmetic mean of instantaneous value of elastic modelling quantity as composite bushing elastic modelling quantity.It should be noted that at a certain strain testing position
The E of composite bushingiThe deviation of the average of the elastic modelling quantity test value of composite bushing is big at test value and other strain testing positions
When 20%, the elastic modelling quantity test value of composite bushing can be cast out at the strain testing position, take remaining strain testing position
Locate composite bushing elastic modelling quantity average as composite bushing elastic modelling quantity.I.e.：Can basisIt is determined that multiple
The elastic modelling quantity of trap pipe, n represents the quantity of strain testing position in whole post equipment.
As can be seen that setting multiple strain testing positions and multiple strain testings being set at each strain testing position
Point, the data precision obtained by multigroup experiment is high, further increases the standard of the elastic modelling quantity result of calculation of composite bushing
Exactness.
Referring to Fig. 3, in one embodiment of the invention, flange elastic modelling quantity to be measured determines that step S2 can be further
Including：
Sub-step S21, the bottom of single-unit equipment to be measured is fixed, 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, can be by actuator to the single-unit
Equipment top applies perpendicular to single-unit equipment axis and horizontal force F of different sizes2.For example, horizontal force F2Can 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 top to be measured and the symmetrical position of actuator, according to position
Meter measurement single-unit equipment top to be measured is moved in varying level power F2Horizontal displacement under effect.
Sub-step S23, determines single-unit equipment junction flange to be measured in each horizontal force F according to displacement d2Bullet under effect
Property modulus.
Specifically, can be according to formulaDetermine single-unit equipment junction method to be measured
Orchid is in each horizontal force F2Elastic modelling quantity under effect.In formula, LtIt is single-unit device length to be measured, LfIt is the length of flange to be measured, It
It is the cross sectional moment of inertia of single-unit equipment to be measured, IfIt is the cross sectional moment of inertia of flange to be measured, E is the elastic modelling quantity of composite bushing.With j
Any section composite bushing in whole post composite bushing is represented, for example, j can take any integer in 1-4, then corresponding composite bushing
With the elastic modulus E at flange mucilage binding positionfjCan be expressed as follows：
In formula, LtjIt is any single-unit device length, LfjIt is any method to be measured
Blue length, ItjIt is any section composite bushing cross sectional moment of inertia, IfjIt is the cross sectional moment of inertia of any flange to be measured, E is compound sleeve
The elastic modelling quantity of pipe.
Sub-step S24, by single-unit equipment top to be measured in varying level power F2The average of the flange elastic modelling quantity under effect
It is defined as the elastic modelling quantity 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 elastic modelling quantity measured under effect seeks arithmetic mean of instantaneous value, you can obtain method to be measured
Blue elastic modelling quantity.
As can be seen that the elastic modelling quantity and relevant parameter according to above-mentioned composite bushing can be tried to achieve and often save compound sleeve accordingly
Pipe and the elastic modelling quantity at flange mucilage binding position, meanwhile, different size of horizontal force F is applied to equipment top2, improve any one
The accuracy in computation of the elastic modelling quantity at section composite bushing and flange mucilage binding position.
Referring to Fig. 4 and Fig. 5, below by taking the whole post 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 the mounting hole of 2 or more than 2, two of which should be made during installation
Be symmetrically installed face that axially bored line constituted perpendicular to power direction (under special circumstances, can by it is actually used when stress side
To).After installation, it should be ensured that whole post composite bushing is in erectility.
Whole post composite bushing bend test：Before experiment, first the surface of composite bushing 1 is polished flat, in each section composite bushing 1
Each strain testing position at symmetrically paste foil gauge 4 along composite bushing flexural deformation both sides, and should ensure that foil gauge 4 in examination
Stably it is pasted on the outer wall of composite bushing 1 always during testing.
During 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 post equipment maximum machine mechanical load is configured.Wherein, under 0.5 times of maximum machine load
Process of the test is：The horizontal force applied to composite bushing top is born in 30s from zero maximum machine for smoothly increasing to 0.5 times
Lotus.When 0.5 times of maximum machine load is reached, should at least continue 30s.It is interior during this period that each strain is measured by foil gauge 4
Dependent variable of the symmetrically arranged two strain testings point in test position i both sides under the effect of varying level power, takes the equal of test value
Value εiAs the dependent variable of the test position, meanwhile, measure each strain testing position to horizontal force F1The distance between application point
Li, the section resistance moment W of composite bushing at each strain testing positioni, wherein i=1-12.By horizontal force F1Fully shed simultaneously
Record overstrain, it is ensured that composite bushing is not damaged, and the dependent variable for otherwise measuring is invalid.Experiment under maximum machine load
Process is：Horizontal force should smoothly increase to maximum machine load in 30s from zero.When maximum machine load is reached, should be extremely
Continue 30s less.It is interior by the measuring strain amount of foil gauge 4 during this period.Horizontal force is fully shed and overstrain is recorded, really
Protect composite bushing not damage, the dependent variable for otherwise measuring is invalid.Process of the test under 1.5 times of maximum machine loads is：Water
Flat power in 30s from the zero maximum machine load for smoothly increasing to 1.5 times, and should continue at least 60s under this load.Herein
By the measuring strain amount of foil gauge 4 in period, then load is steadily shed and recorded overstrain.Permit after load applying
Perhaps overstrain is more than ± the 5% of maximum strain, but it is ensured that there is not visible damage, when should be examined after load thrown off to zero
Look into whether end accessory ftractures or destroy.By horizontal force F1Unload completely, the bend test of whole post equipment terminates.Obtained according to experiment
, referring to above method embodiment, here is omitted for the process that the data for taking are calculated.
Single-unit instrument bend test：Any one bottom of section equipment 1 is fixed on testing stand, the company at the top of composite bushing
One end of fitting 6 sets displacement meter 5, by the actuator 3 of composite bushing top opposite side connection to composite bushing equipment top
Connector 6 apply varying level power F2, apply varying level power F2The specific steps of elastic modelling quantity are measured, referring to above-mentioned whole
Applying horizontal force F in the bend test of post composite bushing1The step of, here is omitted.List to be measured is measured by displacement meter 5
Displacement d of the top of section equipment under each horizontal force action, and measure section composite bushing length Lt, the flange to be measured 2
Length Lf, section composite bushing cross sectional moment of inertia It, the cross sectional moment of inertia I of the flange to be measured 2f, by horizontal force F2Unloading, single-unit
The bend test of equipment terminates.The process that is calculated of data obtained according to experiment referring to above method embodiment, herein not
Repeat again.
In sum, in the present embodiment, by carrying out bend test to whole post equipment and single-unit equipment, composite bushing is determined
The elastic modelling quantity of elastic modelling quantity and flange to be measured, and then the bending rigidity at single-unit vessel flange mucilage binding position is drawn, help to carry
Equipment numerical value modeling accuracy high, supports for the assessment of electrical equipment mechanical property provides accurate data.
Device embodiment：
Composite bushing electrical equipment connecting portion bending stiffness provided in an embodiment of the present invention is shown referring to Fig. 6, in figure
Computing system structured flowchart.As illustrated, the computing system includes：It is composite bushing elastic modelling quantity computing module 100, to be measured
Flange elastic modelling quantity computing module 200, flange bending rigidity computing module 300 to be measured.
Wherein, composite bushing elastic modelling quantity computing module 100 is used to carry out whole post equipment bend test, and according to
Result of the test determines the elastic modelling quantity of composite bushing.It should be noted that composite bushing elastic modelling quantity computing module 100 is specific
Implementation process will not be repeated here referring to above method embodiment, the present embodiment.
Flange elastic modelling quantity 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 elastic modelling quantity of flange to be measured is determined according to the elastic modelling quantity of result of the test and composite bushing.It should be noted that method to be measured
The specific implementation process of blue elastic modelling quantity computing module 200 referring to above method embodiment, no longer go to live in the household of one's in-laws on getting married herein by the present embodiment
State.
The bending rigidity computing module 300 of flange to be measured is used to determine flange to be measured according to the elastic modelling quantity of flange to be measured
Bending rigidity.It should be noted that the specific implementation process of the bending rigidity computing module 300 of flange to be measured is referring to the above method
Embodiment, the present embodiment will not be repeated here.
In the present embodiment, by first calculating the elastic modelling quantity of composite bushing elastic modelling quantity and flange to be measured, and then determine
The bending rigidity at single-unit vessel flange mucilage binding position, test and calculation process are simply and result precision is higher, are favorably improved
Equipment numerical value modeling accuracy, supports for the assessment of electrical equipment mechanical property provides accurate data.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, the application can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.And, the application can be used and wherein include the computer of computer usable program code at one or more
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) is produced
The form of product.
The application is the flow with reference to method, equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram are described.It should be understood that every first-class during flow chart and/or block diagram can be realized by computer program instructions
The combination of flow and/or square frame in journey and/or square frame and flow chart and/or block diagram.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of being specified in present one flow of flow chart or multiple one square frame of flow and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy
In determining the computer-readable memory that mode works so that instruction of the storage in the computer-readable memory is produced and include finger
Make the manufacture of device, the command device realize in one flow of flow chart or multiple one square frame of flow and/or block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented treatment, so as in computer or
The instruction performed 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 individual square frame or multiple square frames.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (9)
1. a kind of computational methods of composite bushing electrical equipment connecting portion bending stiffness, it is characterised in that comprise the following steps：
Bend test is carried out to whole post equipment, and the elastic modelling quantity of composite bushing is determined according to result of the test；
Bend test is carried out to the single-unit equipment where flange to be measured, and it is true according to the elastic modelling quantity of result of the test and composite bushing
The elastic modelling quantity of the fixed flange to be measured；
Elastic modelling quantity according to the flange to be measured determines the bending rigidity of the flange to be measured.
2. computational methods of composite bushing electrical equipment connecting portion bending stiffness according to claim 1, its feature exists
In the elastic modelling quantity of the composite bushing determines that step is further included：
Multiple strain testing positions are set in the whole post equipment；
The bottom of the whole post equipment is fixed, and applies different horizontal force F to the top of the whole post equipment1；
Detect that composite bushing is in each horizontal force F at each strain testing position respectively1Dependent 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 average of the elastic modelling quantity under effect is defined as
The elastic modelling quantity of the composite bushing.
3. computational methods of composite bushing electrical equipment connecting portion bending stiffness according to claim 2, its feature exists
In described to determine that composite bushing is in each horizontal force F at each strain testing position according to dependent variable ε1Bullet under effect
Property modulus E is specially：
According to formulaDetermine that composite bushing is in each horizontal force F at each strain testing position1Under effect
Elastic modelling quantity；
In above formula, L is each strain testing position to each horizontal force F1The distance between application point, W for it is each it is described should
Become the section resistance moment of composite bushing at test position.
4. computational methods of composite bushing electrical equipment connecting portion bending stiffness according to claim 2, its feature exists
In,
At least three strain testing positions are set along its length on the often section composite bushing of the whole post equipment；
By composite bushing at each described strain testing position in varying level power F1The average of the elastic modelling quantity under effect is defined as
Elastic modelling quantity of the composite bushing at the strain testing position.
5. computational methods of composite bushing electrical equipment connecting portion bending stiffness according to claim 4, its feature exists
In,
Each strain testing position is symmetrical arranged two strain testing points along the both sides of the composite bushing flexural deformation；
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
Average is defined as at the strain testing position composite bushing in horizontal force F1Dependent variable ε under effect.
6. the calculating side of composite bushing electrical equipment connecting portion bending stiffness according to any one of claim 1 to 5
Method, it is characterised in that the elastic modelling quantity of the flange to be measured determines that step is further included：
The bottom of the single-unit equipment to be measured is fixed, and applies different horizontal force F to the top of the single-unit equipment to be measured2；
Detect the top of the single-unit equipment to be measured in each horizontal force F respectively2Displacement d under effect；
Determine the single-unit equipment junction flange to be measured in each horizontal force F according to the displacement d2Elasticity under effect
Modulus；
By the single-unit equipment top to be measured in varying level power F2The average of the flange elastic modelling quantity under effect is defined as described treating
Survey the elastic modelling quantity of flange.
7. computational methods of composite bushing electrical equipment connecting portion bending stiffness according to claim 6, its feature exists
In described to determine the single-unit equipment junction flange to be measured in each horizontal force F according to displacement d2Elasticity under effect
Modulus EfSpecially：
According to formulaDetermine the single-unit equipment junction flange to be measured in each water
Flat power F2Elastic modelling quantity under effect；
In above formula, LtIt is the single-unit device length to be measured, LfIt is the length of the flange to be measured, ItFor the single-unit to be measured sets
Standby cross sectional moment of inertia, IfIt is the cross sectional moment of inertia of the flange to be measured, E is the elastic modelling quantity of the composite bushing.
8. computational methods of composite bushing electrical equipment connecting portion bending stiffness according to claim 7, its feature exists
In the elastic modelling quantity of the flange to be measured is defined as into the flange to be measured with the product of the flange cross sectional moment of inertia to be measured
Bending rigidity.
9. a kind of computing system of composite bushing electrical equipment connecting portion bending stiffness, it is characterised in that including：
Composite bushing elastic modelling quantity computing module (100) for carrying out bend test and true according to result of the test to whole post equipment
Determine the elastic modelling quantity of composite bushing；
Flange elastic modelling quantity computing module (200) to be measured, for carrying out bend test to the single-unit equipment where flange to be measured, and
Elastic modelling quantity according to result of the test and composite bushing determines the elastic modelling quantity of the flange to be measured；
Flange bending rigidity computing module (300) to be measured, for determining the method to be measured according to the flange elastic modelling quantity to be measured
Blue bending rigidity.
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