CN116705483A - Method for optimizing strength of transformer oil tank - Google Patents
Method for optimizing strength of transformer oil tank Download PDFInfo
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- CN116705483A CN116705483A CN202310748956.9A CN202310748956A CN116705483A CN 116705483 A CN116705483 A CN 116705483A CN 202310748956 A CN202310748956 A CN 202310748956A CN 116705483 A CN116705483 A CN 116705483A
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- 238000000034 method Methods 0.000 title claims abstract description 66
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 130
- 238000002360 preparation method Methods 0.000 claims abstract description 31
- 238000004040 coloring Methods 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 57
- 239000000463 material Substances 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 101100034381 Photobacterium phosphoreum ribE gene Proteins 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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- Housings And Mounting Of Transformers (AREA)
Abstract
The application provides a method for optimizing the strength of a transformer oil tank. The method for optimizing the strength of the transformer oil tank comprises the following steps: step S1: dividing the panel to be optimized into m-n subareas along the horizontal and vertical directions of the panel to be optimized of the transformer oil tank, and obtaining the total deflection deformation omega' of each subarea; step S2: for the total deflection deformation omega' being larger than the preset deflection deformation omega Pre-preparation Marking and/or recording the subregions of the pattern to form a region with the intensity to be optimized; step S3: determining the setting position and the length L of the reinforcing rib according to the region to be optimized, and preliminarily determining the section size of the reinforcing rib to obtain the maximum deflection deformation omega of the reinforcing rib Rib The method comprises the steps of carrying out a first treatment on the surface of the Step S4: according to the maximum deflection deformation omega of the reinforcing rib Rib And the total deflection deformation omega of the region to be optimized Total (S) The relation between the two parameters judges whether the parameters of the reinforcing ribs meet the selected requirements. The application solves the problem that the design and the arrangement of the reinforcing ribs of the transformer oil tank in the prior art can not be fully filledSufficient strength requirements, and even increased cost.
Description
Technical Field
The application relates to the technical field of oil immersed transformers, in particular to a method for optimizing the strength of a transformer oil tank.
Background
At present, the oil immersed power transformer has the advantages of simple structure, low manufacturing difficulty, better bending strength and the like because of the factors of large capacity, large volume, high impact resistance, earthquake resistance and the like, and the steel plate reinforcing rib is welded on the outer wall of the oil tank of the transformer without exception. Specifically, in the process of designing and welding the steel plate reinforcing ribs, the following two operation modes are generally adopted: full bond and full bond segment welds. The method of fully attaching full-welding is only suitable for the arrangement of steel plate reinforcing ribs of a small oil-immersed transformer because the material near fusion welding overlap joint is easy to denature and become brittle after large-area continuous welding, so that the design and manufacturing mode of fully attaching section welding are more suitable for the actual production process.
In the present stage, manufacturers and designers of all large mainstream oil-immersed transformers design the arrangement, material selection and size of steel plate reinforcing ribs according to the experience of design engineering, and often adopt fuzzy techniques such as multiple materials, multiple arrangement and experience values.
However, the strength reinforcing effect of the steel plate reinforcing ribs processed and put into operation by the arrangement method is not as expected, so that the deformation, even fracture and other conditions of the oil tank panel are endlessly layered, and the manufacturing cost of the product is increased linearly after the size and the unit number of the steel plate reinforcing ribs of the oil tank are blindly increased.
Disclosure of Invention
The application mainly aims to provide a method for optimizing the strength of a transformer oil tank, which aims to solve the problems that the design and arrangement of reinforcing ribs of the transformer oil tank in the prior art cannot meet the strength requirement and even increase the cost.
In order to achieve the above object, the present application provides a method for optimizing the strength of a transformer tank, comprising: step S1: dividing the panel to be optimized into m-n subareas along the horizontal direction and the vertical direction of the panel to be optimized of the transformer oil tank, and acquiring the total deflection deformation omega' of each subarea; step S2: judging the total deflection deformation omega' and the preset deflection deformation omega of each subarea Pre-preparation The magnitude relation between the deflection deformation quantity omega 'and the total deflection deformation quantity omega' is larger than the preset deflection deformation quantity omega Pre-preparation Marking and/or recording sub-regions of (c) to form an intensity to be optimisedA region; step S3: determining the setting position and the length L of the reinforcing rib according to the region to be optimized, and preliminarily determining the section size of the reinforcing rib to obtain the maximum deflection deformation omega of the reinforcing rib Rib The method comprises the steps of carrying out a first treatment on the surface of the Step S4: according to the maximum deflection deformation omega of the reinforcing rib Rib And the total deflection deformation omega of the region to be optimized Total (S) And (3) judging whether the parameters of the reinforcing ribs meet the selected requirements or not according to the size relation, if the parameters of the reinforcing ribs do not meet the selected requirements, selecting the reinforcing ribs with different parameters from the reinforcing ribs, and repeating the step (S3) until the parameters of the selected reinforcing ribs meet the selected requirements.
Further, the method for dividing the panel to be optimized into m×n sub-areas along the horizontal direction and the vertical direction of the panel to be optimized of the transformer oil tank and obtaining the total deflection deformation omega' of each sub-area includes: dividing the panel to be optimized into n rows of cross bar areas along the vertical direction of the panel to be optimized, and obtaining the maximum deflection deformation omega of each row of cross bar areas i The method comprises the steps of carrying out a first treatment on the surface of the Dividing the panel to be optimized into m columns of vertical bar areas along the horizontal direction of the panel to be optimized, and obtaining the maximum deflection deformation omega of each column of vertical bar areas j The method comprises the steps of carrying out a first treatment on the surface of the Maximum deflection deformation omega of the ith row i Maximum deflection deformation omega of j column j Summing to obtain the total deflection deformation omega' of the subarea; i=0, 1,2, … n; j=0, 1,2, … m.
Further, step S1 further includes obtaining a highest oil position H in the transformer oil tank Oil (oil) The method comprises the steps of carrying out a first treatment on the surface of the Obtaining the maximum deflection deformation omega of the ith row of horizontal bar area i The method of (1) comprises: according to the formulaObtaining; wherein the i-th row of the cross bar area bears an oil pressure value F i The following relationship is satisfied: />
Further, the maximum deflection deformation omega of the j-th column vertical bar area is obtained j The method of (1) comprises: according to the formulaObtaining; wherein the j-th column region is subjected to a pressure value F j The following relationship is satisfied: />And obtaining the product.
Further, in step S2, the total deflection deformation ω 'and the preset deflection deformation ω' of each sub-region are determined Pre-preparation The method for the size relation between the two comprises the following steps: the total deflection deformation omega' and the preset deflection deformation omega of each subarea are carried out Pre-preparation Respectively converting into a first preset pattern and a second preset pattern according to standard proportion, and judging that the total deflection deformation omega' of the subarea is larger than the preset deflection deformation omega if the first preset pattern covers the second preset pattern Pre-preparation The method comprises the steps of carrying out a first treatment on the surface of the The centers of the first preset pattern and the second preset pattern are consistent.
Further, the total deflection deformation omega' is larger than the preset deflection deformation omega Pre-preparation The method of marking and/or recording sub-areas of (c) comprises: coloring a subarea of the first preset pattern covering the second preset pattern; and/or acquiring coordinate values of the subareas of the first preset graph covering the second preset graph in a coordinate system ZOY.
Further, the method for forming the region with the strength to be optimized comprises the following steps: setting the total deflection deformation omega' to be larger than the preset deflection deformation omega Pre-preparation The subareas are preset subareas, and a plurality of preset subareas which are continuously arranged along the Y-axis direction and/or the Z-axis direction form an area with the strength to be optimized.
Further, in step S3, the length L of the reinforcing rib is determined according to the length or width of the region to be optimized in terms of strength, the cross-sectional length e and the cross-sectional width f are selected as the cross-sectional dimensions of the reinforcing rib, and the sub-region covered by the reinforcing rib is set as the actual reinforcing region; obtaining the maximum deflection deformation omega of the reinforcing rib Rib The method of (1) comprises: according to the formulaThe following steps are obtained: wherein the moment of inertia of the reinforcing ribI Rib The following relationship is satisfied: />Pressure value F Rib The absolute value of the difference between the oil pressure value F born by the area to be optimized for the strength and the oil pressure value F' born by the actual reinforced area.
Further, the method for acquiring the oil pressure value F born by the area with the strength to be optimized comprises the following steps: acquiring a coordinate range of a region with strength to be optimized in a coordinate system ZOY, and calculating oil pressure values F of all subregions positioned in the coordinate range p(i,j) Summing to obtain an oil pressure value F born by the area with the strength to be optimized; the method for acquiring the oil pressure value F' born by the actual reinforced area comprises the following steps: acquiring a coordinate range of an actual reinforcing area in a coordinate system ZOY, and calculating oil pressure values F of all subareas positioned in the coordinate range p(i,j) And summed to obtain the oil pressure value F' experienced by the actual reinforced area.
Further, according to the maximum deflection deformation omega of the reinforcing rib Rib And the total deflection deformation omega of the region to be optimized Total (S) The method for judging whether the parameters of the reinforcing ribs meet the selected requirements or not according to the size relation comprises the following steps: if the maximum deflection deformation omega of the reinforcing rib Rib Less than or equal to the total deflection deformation omega of the region to be optimized Total (S) Judging that the selection of the position, the length, the cross section length e and the cross section width f of the reinforcing rib meets the selected requirement; if the maximum deflection deformation omega of the reinforcing rib Rib The total deflection deformation omega of the region to be optimized Total (S) At least one of the cross-sectional length e and the cross-sectional width f of the reinforcing rib needs to be adjusted.
When the technical scheme of the application is applied, when the position and the size of the reinforcing ribs arranged on the transformer oil tank are designed, firstly, dividing the panel to be optimized into m-n subareas along the horizontal direction and the vertical direction of the panel to be optimized of the transformer oil tank, obtaining the total deflection deformation omega 'of each subarea, and then judging the total deflection deformation omega' and the preset deflection deformation omega of each subarea Pre-preparation Magnitude relation between them, and for the totalThe deflection deformation omega' is larger than the preset deflection deformation omega Pre-preparation Marking and/or recording the sub-areas of the pattern to form an area of intensity to be optimized. Then, determining the setting position and the length L of the reinforcing rib according to the region to be optimized, and preliminarily determining the cross-sectional size of the reinforcing rib to obtain the maximum deflection deformation omega of the reinforcing rib Rib And according to the maximum deflection deformation omega of the reinforcing rib Rib And the total deflection deformation omega of the region to be optimized Total (S) And judging whether the parameters of the reinforcing ribs meet the selected requirements or not according to the size relation, if the parameters of the reinforcing ribs do not meet the selected requirements, selecting the reinforcing ribs with different parameters from the reinforcing ribs, and repeating the step S3 until the parameters of the selected reinforcing ribs meet the selected requirements, thereby solving the problems that the design and arrangement of the reinforcing ribs of the transformer oil tank in the prior art cannot meet the strength requirements and even increase the cost. Therefore, the structure and the size of the reinforcing rib are optimized by mechanical geometry and differential means to achieve the aim of reducing cost, and the double reduction of the consumption of the reinforcing rib and the material consumption is achieved on the premise of ensuring the structural strength of the transformer oil tank, so that the material use cost surge caused by blind selection and transitional arrangement is effectively reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 shows a schematic view of the area division of a panel to be optimized according to an embodiment of the transformer tank strength optimization method of the present application;
fig. 2 shows a flow chart of a method of optimizing the strength of the transformer tank in fig. 1.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.
In the present application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used generally with respect to the orientation shown in the drawings or to the vertical, vertical or gravitational orientation; also, for ease of understanding and description, "left, right" is generally directed to the left, right as shown in the drawings; "inner and outer" refer to inner and outer relative to the outline of the components themselves, but the above-described orientation terms are not intended to limit the present application.
The application provides a method for optimizing the strength of a transformer oil tank, which aims to solve the problem that the design and arrangement of reinforcing ribs of the transformer oil tank in the prior art cannot meet the strength requirement and even increase the cost.
As shown in fig. 2, the method for optimizing the strength of the transformer tank comprises the following steps:
step S1: dividing the panel to be optimized into m-n subareas along the horizontal direction and the vertical direction of the panel to be optimized of the transformer oil tank, and acquiring the total deflection deformation omega' of each subarea;
step S2: judging the total deflection deformation omega' and the preset deflection deformation omega of each subarea Pre-preparation The magnitude relation between the deflection deformation quantity omega 'and the total deflection deformation quantity omega' is larger than the preset deflection deformation quantity omega Pre-preparation Marking and/or recording the subregions of (c) to form regions of intensity to be optimized;
step S3: determining the setting position and the length L of the reinforcing rib according to the region to be optimized, and preliminarily determining the section size of the reinforcing rib to obtain the maximum deflection deformation omega of the reinforcing rib Rib ；
Step S4: according to the maximum deflection deformation omega of the reinforcing rib Rib And the total deflection deformation omega of the region to be optimized Total (S) And (3) judging whether the parameters of the reinforcing ribs meet the selected requirements or not according to the size relation, if the parameters of the reinforcing ribs do not meet the selected requirements, selecting the reinforcing ribs with different parameters from the reinforcing ribs, and repeating the step (S3) until the parameters of the selected reinforcing ribs meet the selected requirements.
By applying the technical scheme of the embodiment, the method is thatWhen the position and the size of the reinforcing ribs arranged on the transformer oil tank are designed, firstly dividing the panel to be optimized into m x n subareas along the horizontal direction and the vertical direction of the panel to be optimized of the transformer oil tank, obtaining the total deflection deformation omega ' of each subarea, and then judging the total deflection deformation omega ' and the preset deflection deformation omega ' of each subarea Pre-preparation The magnitude relation between the deflection deformation quantity omega 'and the total deflection deformation quantity omega' is larger than the preset deflection deformation quantity omega Pre-preparation Marking and/or recording the sub-areas of the pattern to form an area of intensity to be optimized. Then, determining the setting position and the length L of the reinforcing rib according to the region to be optimized, and preliminarily determining the cross-sectional size of the reinforcing rib to obtain the maximum deflection deformation omega of the reinforcing rib Rib And according to the maximum deflection deformation omega of the reinforcing rib Rib And the total deflection deformation omega of the region to be optimized Total (S) And judging whether the parameters of the reinforcing ribs meet the selected requirements or not according to the size relation, if the parameters of the reinforcing ribs do not meet the selected requirements, selecting the reinforcing ribs with different parameters from the reinforcing ribs, and repeating the step S3 until the parameters of the selected reinforcing ribs meet the selected requirements, thereby solving the problems that the design and arrangement of the reinforcing ribs of the transformer oil tank in the prior art cannot meet the strength requirements and even increase the cost. Therefore, the structure and the size of the reinforcing rib are optimized by mechanical geometry and differential means to achieve the aim of reducing cost, and the double reduction of the consumption of the reinforcing rib and the material consumption is achieved on the premise of ensuring the structural strength of the transformer oil tank, so that the material use cost surge caused by blind selection and transitional arrangement is effectively reduced.
In this embodiment, the method for dividing the panel to be optimized into m×n sub-areas along the horizontal direction and the vertical direction of the panel to be optimized of the transformer oil tank and obtaining the total deflection deformation ω' of each sub-area includes:
dividing the panel to be optimized into n rows of cross bar areas along the vertical direction of the panel to be optimized, and obtaining the maximum deflection deformation omega of each row of cross bar areas i ；
Dividing the panel to be optimized into m columns of vertical bar areas along the horizontal direction of the panel to be optimized, and obtaining the maximum deflection deformation omega of each column of vertical bar areas j The method comprises the steps of carrying out a first treatment on the surface of the Wherein, the row number i and the column number j corresponding to each subarea are obtained, and the maximum deflection deformation omega of the ith row is obtained i Maximum deflection deformation omega of j column j Summing to obtain the total deflection deformation omega' of the subarea; i=0, 1,2, … n; j=0, 1,2, … m.
As shown in FIG. 2, a panel to be optimized of a transformer oil tank is selected, the length and the height of the panel are measured to be a and b respectively, a geometric centroid O point of the panel is taken to establish a space coordinate axis ZOY, and H is satisfied Oil (oil) B is less than or equal to b. Wherein the heights of the horizontal bar regions of each row are uniform, the lengths of the vertical bar regions of each column are uniform, and the value of n can be approximately limited, so that each part of the height is H Oil (oil) The value of m can also be approximated to infinity in the region of/n, which can be regarded as an average hydraulic load, and hence a concentrated hydraulic load in the region of each length a/m.
In this embodiment, the highest oil position H in the transformer oil tank is obtained Oil (oil) Obtaining the maximum deflection deformation omega of the ith row of horizontal bar area i The method of (1) comprises:
according to the formulaObtaining;
wherein the i-th row of the cross bar area bears an oil pressure value F i The following relationship is satisfied:
in this embodiment, the length of the panel to be optimized is a, the height of the panel to be optimized is b, a coordinate system ZOY is established by taking the centroid of the panel to be optimized as the origin of coordinates O, and the moment of inertia I of the origin of coordinates O along the Y axis is obtained y . Wherein the moment of inertia I y The following conditions are satisfied:
in the present embodiment, the maximum deflection deformation amount ω of the j-th column bar region is obtained j The method of (1) comprises:
according to the formulaObtaining;
wherein the j-th column region is subjected to a pressure value F j The following relationship is satisfied:and obtaining the product.
In this embodiment, the length of the panel to be optimized is a, the height of the panel to be optimized is b, a coordinate system ZOY is established by taking the centroid of the panel to be optimized as the origin of coordinates O, and the moment of inertia I of the origin of coordinates O along the z axis is obtained z . Wherein the moment of inertia I z The following conditions are satisfied:
in the embodiment, in step S2, the total deflection deformation ω 'and the preset deflection deformation ω' of each sub-region are determined Pre-preparation The method for the size relation between the two comprises the following steps:
the total deflection deformation omega' and the preset deflection deformation omega of each subarea are carried out Pre-preparation Respectively converting into a first preset pattern and a second preset pattern according to standard proportion, and judging that the total deflection deformation omega' of the subarea is larger than the preset deflection deformation omega if the first preset pattern covers the second preset pattern Pre-preparation The method comprises the steps of carrying out a first treatment on the surface of the The centers of the first preset pattern and the second preset pattern are consistent.
Specifically, the total deflection deformation omega' of each subarea is obtained by adopting a superposition theory.
Optionally, the total deflection deformation omega' is larger than the preset deflection deformation omega Pre-preparation The method of marking and/or recording sub-areas of (c) comprises:
coloring a subarea of the first preset pattern covering the second preset pattern; and/or the number of the groups of groups,
and acquiring coordinate values of the subareas of the first preset graph covering the second preset graph in a coordinate system ZOY.
Thus, the arrangement is convenient for the staff to acquire the total deflection deformation omega'Is larger than a preset deflection deformation omega Pre-preparation Thereby reducing the operation difficulty of staff.
In this embodiment, the method for forming the region to be optimized in strength includes:
setting the total deflection deformation omega' to be larger than the preset deflection deformation omega Pre-preparation The subareas are preset subareas, and a plurality of preset subareas which are continuously arranged along the Y-axis direction and/or the Z-axis direction form an area with the strength to be optimized.
Specifically, the total deflection deformation omega' and the preset deflection deformation omega in each subarea are established Pre-preparation The standard proportion solid dots of (1) are compared, and the total deflection deformation omega' is larger than the preset deflection deformation omega Pre-preparation Is defined in the sub-region W of (c).
In the embodiment, in step S3, the length L of the reinforcing rib is determined according to the length or width of the region to be optimized in terms of strength, the cross-sectional length e and the cross-sectional width f are selected as the cross-sectional dimensions of the reinforcing rib, and the sub-region covered by the reinforcing rib is set as the actual reinforcing region; obtaining the maximum deflection deformation omega of the reinforcing rib Rib The method of (1) comprises:
according to the formulaThe following steps are obtained:
wherein the moment of inertia I of the reinforcing rib Rib The following relationship is satisfied:pressure value F Rib The absolute value of the difference between the oil pressure value F born by the area to be optimized for the strength and the oil pressure value F' born by the actual reinforced area.
It should be noted that, the area where the reinforcing ribs are actually installed is an actual reinforcing area, which is generally smaller than the area where the strength is to be optimized.
In this embodiment, the method for obtaining the oil pressure value F borne by the area to be optimized includes:
acquiring a coordinate range of an area to be optimized of the intensity in a coordinate system ZOY, and calculating all the sub-areas positioned in the coordinate rangeOil pressure value F of region p(i,j) And summing to obtain the oil pressure value F born by the area with the strength to be optimized.
In this embodiment, the method for obtaining the oil pressure value F' born by the actual reinforced area includes:
acquiring a coordinate range of an actual reinforcing area in a coordinate system ZOY, and calculating oil pressure values F of all subareas positioned in the coordinate range p(i,j) And summed to obtain the oil pressure value F' experienced by the actual reinforced area.
In the present embodiment, the deformation amount ω is changed according to the maximum deflection of the reinforcing bead Rib And the total deflection deformation omega of the region to be optimized Total (S) The method for judging whether the parameters of the reinforcing ribs meet the selected requirements or not according to the size relation comprises the following steps:
if the maximum deflection deformation omega of the reinforcing rib Rib Less than or equal to the total deflection deformation omega of the region to be optimized Total (S) Judging that the selection of the position, the length, the cross section length e and the cross section width f of the reinforcing rib meets the selected requirement;
if the maximum deflection deformation omega of the reinforcing rib Rib The total deflection deformation omega of the region to be optimized Total (S) At least one of the cross-sectional length e and the cross-sectional width f of the reinforcing rib needs to be adjusted.
Specifically, the length and width of the area to be optimized are respectively c and d, c or d is respectively selected as the length L of the reinforcing rib to be selected, the section size of the reinforcing rib is initially selected as e and F according to the profile list, and the composite pressure value F of one of the two sides is obtained according to the calculated pressure difference of the two sides of the position where the reinforcing rib is to be placed Rib And the maximum deflection deformation omega of the reinforcing rib is obtained Rib . Thereafter, ω is compared Rib And omega Total (S) The size of the two parts if omega is satisfied Rib ≤ω Total (S) The position and the section of the selected reinforcing rib are proved to meet the limit requirements, and can be output as a result. If not meet omega Rib ≤ω Total (S) And re-selecting the reinforcing ribs until all the selection ends.
In the embodiment, the structure and the size of the welding reinforcing ribs of the transformer steel plate are optimized by mechanical geometry and differential means to achieve the purpose of reducing cost, and the problems and the industry pain point can be effectively solved.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
when designing the position and the size of the reinforcing ribs arranged on the transformer oil tank, firstly dividing the panel to be optimized into m x n subareas along the horizontal direction and the vertical direction of the panel to be optimized of the transformer oil tank, obtaining the total deflection deformation omega 'of each subarea, and then judging the total deflection deformation omega' and the preset deflection deformation omega of each subarea Pre-preparation The magnitude relation between the deflection deformation quantity omega 'and the total deflection deformation quantity omega' is larger than the preset deflection deformation quantity omega Pre-preparation Marking and/or recording the sub-areas of the pattern to form an area of intensity to be optimized. Then, determining the setting position and the length L of the reinforcing rib according to the region to be optimized, and preliminarily determining the cross-sectional size of the reinforcing rib to obtain the maximum deflection deformation omega of the reinforcing rib Rib And according to the maximum deflection deformation omega of the reinforcing rib Rib And the total deflection deformation omega of the region to be optimized Total (S) And judging whether the parameters of the reinforcing ribs meet the selected requirements or not according to the size relation, if the parameters of the reinforcing ribs do not meet the selected requirements, selecting the reinforcing ribs with different parameters from the reinforcing ribs, and repeating the step S3 until the parameters of the selected reinforcing ribs meet the selected requirements, thereby solving the problems that the design and arrangement of the reinforcing ribs of the transformer oil tank in the prior art cannot meet the strength requirements and even increase the cost. Therefore, the structure and the size of the reinforcing rib are optimized by mechanical geometry and differential means to achieve the aim of reducing cost, and the double reduction of the consumption of the reinforcing rib and the material consumption is achieved on the premise of ensuring the structural strength of the transformer oil tank, so that the material use cost surge caused by blind selection and transitional arrangement is effectively reduced.
It will be apparent that the embodiments described above are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A method for optimizing the strength of a transformer tank, comprising:
step S1: dividing the panel to be optimized into m x n subareas along the horizontal direction and the vertical direction of the panel to be optimized of the transformer oil tank, and obtaining the total deflection deformation omega' of each subarea;
step S2: judging the total deflection deformation omega' and the preset deflection deformation omega of each subarea Pre-preparation The magnitude relation between the deflection deformation quantity omega 'and the total deflection deformation quantity omega' is larger than the preset deflection deformation quantity omega Pre-preparation Marking and/or recording the subregions of (c) to form regions of intensity to be optimized;
step S3: according to the waiting optimizationThe setting position and the length L of the reinforcing rib are determined in the melting area, the section size of the reinforcing rib is preliminarily determined, and the maximum deflection deformation omega of the reinforcing rib is obtained Rib ；
Step S4: according to the maximum deflection deformation omega of the reinforcing rib Rib And the total deflection deformation omega of the region to be optimized Total (S) And judging whether the parameters of the reinforcing ribs meet the selected requirements or not according to the size relation, if the parameters of the reinforcing ribs do not meet the selected requirements, selecting reinforcing ribs with different parameters from the reinforcing ribs, and repeating the step S3 until the parameters of the selected reinforcing ribs meet the selected requirements.
2. The method for optimizing the strength of the transformer tank according to claim 1, wherein the method for dividing the panel to be optimized into m×n sub-areas along the horizontal direction and the vertical direction of the panel to be optimized of the transformer tank and obtaining the total deflection deformation ω' of each sub-area comprises:
dividing the panel to be optimized into n rows of cross bar areas along the vertical direction of the panel to be optimized, and obtaining the maximum deflection deformation omega of each row of cross bar areas i ；
Dividing the panel to be optimized into m columns of vertical bar areas along the horizontal direction of the panel to be optimized, and obtaining the maximum deflection deformation omega of each column of vertical bar areas j ；
Maximum deflection deformation omega of the ith row i Maximum deflection deformation omega of j column j Summing to obtain the total deflection deformation omega' of the subarea; i=0, 1,2, … n; j=0, 1,2, … m.
3. The method for optimizing the strength of a transformer tank according to claim 2, wherein the step S1 further comprises obtaining a highest oil position H in the transformer tank Oil (oil) The method comprises the steps of carrying out a first treatment on the surface of the Obtaining the maximum deflection deformation omega of the ith row of horizontal bar area i The method of (1) comprises:
according to the formulaObtaining;
wherein the i-th row of the cross bar area bears an oil pressure value F i The following relationship is satisfied:
4. the method for optimizing the strength of a transformer tank according to claim 2, wherein the maximum deflection deformation ω of the j-th column region is obtained j The method of (1) comprises:
according to the formulaObtaining;
wherein the j-th column region is subjected to a pressure value F j The following relationship is satisfied:and obtaining the product.
5. The method for optimizing the strength of a transformer tank according to claim 1, wherein in the step S2, the total deflection deformation ω 'and the preset deflection deformation ω' of each of the subregions are determined Pre-preparation The method for the size relation between the two comprises the following steps:
the total deflection deformation omega' and the preset deflection deformation omega of each subarea are carried out Pre-preparation Respectively converting the sub-region into a first preset pattern and a second preset pattern according to standard proportion, and judging that the total deflection deformation omega' of the sub-region is larger than the preset deflection deformation omega if the first preset pattern covers the second preset pattern Pre-preparation The method comprises the steps of carrying out a first treatment on the surface of the The centers of the first preset pattern and the second preset pattern are consistent.
6. The method of optimizing the strength of a transformer tank of claim 5, wherein the total deflection deformation ω' is greater than the preset deflection deformation ω Pre-preparation Is a son of (2)The method for marking and/or recording the area comprises the following steps:
coloring a subarea of the first preset pattern covering the second preset pattern; and/or the number of the groups of groups,
and acquiring coordinate values of the first preset graph covering the subareas of the second preset graph in a coordinate system ZOY.
7. The method of optimizing the strength of a transformer tank of claim 1, wherein the method of forming the region of strength to be optimized comprises:
setting the total deflection deformation omega' to be larger than the preset deflection deformation omega Pre-preparation The subareas are preset subareas, and a plurality of preset subareas which are continuously arranged along the Y-axis direction and/or the Z-axis direction form the area to be optimized in strength.
8. The method for optimizing the strength of the transformer tank according to claim 1, wherein in the step S3, the length L of the reinforcing rib is determined according to the length or the width of the region to be optimized for the strength, the cross-sectional length e and the cross-sectional width f are selected as the cross-sectional dimensions of the reinforcing rib, and the subarea covered by the reinforcing rib is set as an actual reinforcing region; obtaining the maximum deflection deformation omega of the reinforcing rib Rib The method of (1) comprises:
according to the formulaThe following steps are obtained:
wherein, the moment of inertia I of the reinforcing rib Rib The following relationship is satisfied:pressure value F Rib And the absolute value of the difference value between the oil pressure value F born by the area to be optimized for the strength and the oil pressure value F' born by the actual reinforcing area.
9. The method for optimizing the strength of a transformer tank of claim 8,
the method for acquiring the oil pressure value F born by the area with the strength to be optimized comprises the following steps:
acquiring a coordinate range of the area to be optimized in the coordinate system ZOY, and calculating oil pressure values F of all subareas positioned in the coordinate range p(i,j) Summing to obtain an oil pressure value F born by the area to be optimized in the strength;
the method for acquiring the oil pressure value F' born by the actual reinforced area comprises the following steps:
acquiring a coordinate range of the actual reinforcing area in a coordinate system ZOY, and calculating an oil pressure value F of each subarea positioned in the coordinate range p(i,j) And summing to obtain the oil pressure value F' born by the actual reinforced area.
10. The method of optimizing the strength of a transformer tank according to claim 1, wherein the maximum deflection deformation ω of the reinforcing bead is based on Rib And the total deflection deformation omega of the region to be optimized Total (S) The method for judging whether the parameters of the reinforcing ribs meet the selected requirements or not according to the size relation comprises the following steps:
if the maximum deflection deformation omega of the reinforcing rib Rib Less than or equal to the total deflection deformation omega of the region to be optimized Total (S) Judging that the selection of the position, the length, the cross section length e and the cross section width f of the reinforcing rib meets the selected requirement;
if the maximum deflection deformation omega of the reinforcing rib Rib A total deflection deformation omega larger than the region to be optimized Total (S) At least one of the cross-sectional length e and the cross-sectional width f of the reinforcing rib needs to be adjusted.
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