CN110991107A - Three-dimensional model construction method for steel pipe tower of power transmission line - Google Patents
Three-dimensional model construction method for steel pipe tower of power transmission line Download PDFInfo
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Abstract
The embodiment of the invention provides a method for constructing a three-dimensional model of a steel pipe tower of a power transmission line, which comprises the following steps: acquiring a parameter value and a cross arm parameter value of a main rod of a transmission line tower; automatically generating a three-dimensional structure model of the steel tube tower of the power transmission line according to the parameter values of the main rod of the tower and the parameter values of the cross arm; acquiring the stress of the steel tube tower of the power transmission line, applying the stress of the steel tube tower of the power transmission line to the three-dimensional structure model, performing finite element calculation, and obtaining the rigidity and the strength of the three-dimensional structure model through the finite element calculation; and when the rigidity and the strength of the three-dimensional structure model meet the design requirements, converting the three-dimensional structure model of the steel pipe tower of the power transmission line into a two-dimensional graph. The three-dimensional model of the transmission line steel pipe tower meeting the design requirements can be generated by acquiring the parameter values of the main rod of the transmission line tower and the parameter values of the cross arm without adopting the design experience of designers.
Description
Technical Field
The invention relates to the field of power system simulation, in particular to a three-dimensional model construction method for a steel pipe tower of a power transmission line.
Background
In the prior art, a tower is required to be erected for supporting wires and cables for long-distance power grid output.
In the process of implementing the invention, the applicant finds that at least the following problems exist in the prior art:
generally, the design of the tower is basically calculated manually according to designers, and the labor cost is high; in addition, the method is generally carried out according to experience accumulated by designers, and in order to meet the requirements of bearing and service life, the structural redundancy is very large, so that the materials are wasted, and the cost is high.
Disclosure of Invention
The embodiment of the invention provides a three-dimensional model construction method for a steel pipe tower of a power transmission line, which can generate a three-dimensional model of the steel pipe tower of the power transmission line meeting design requirements by acquiring the parameter values of a main rod and the parameter values of a cross arm of the steel pipe tower of the power transmission line without adopting the design experience of designers.
In order to achieve the above object, an embodiment of the present invention provides a method for constructing a three-dimensional model of a steel pipe tower of a power transmission line, including:
acquiring a parameter value and a cross arm parameter value of a main rod of a transmission line tower; automatically generating a three-dimensional structure model of the steel tube tower of the power transmission line according to the parameter values of the main rod of the tower and the parameter values of the cross arm; the parameters of the main rod of the steel pipe tower comprise: the weight estimation of the main rod, the total height of the main rod, the section shape of the main rod, the diameter of a circumscribed circle of the section of the top of the main rod, the diameter of a circumscribed circle of the section of the bottom of the main rod, the taper and the connection mode inside the main rod are carried out; the cross arm parameters include: whether the cross arms are symmetrically arranged or not, the number of hanging points of each cross arm, the elevation of the hanging points on each cross arm, the root diameter of each cross arm and the tip diameter of each cross arm;
acquiring the stress of the steel tube tower of the power transmission line, applying the stress of the steel tube tower of the power transmission line to the three-dimensional structure model, performing finite element calculation, and obtaining the rigidity and the strength of the three-dimensional structure model through the finite element calculation;
and when the rigidity and the strength of the three-dimensional structure model meet the design requirements, converting the three-dimensional structure model of the steel pipe tower of the power transmission line into a two-dimensional graph.
The technical scheme has the following beneficial effects: according to the method, the three-dimensional model of the transmission line steel pipe tower meeting the design requirements can be generated by constructing the transmission line steel pipe tower through the three-dimensional model without adopting the design experience of designers and by acquiring the parameter values of the main rod of the transmission line tower and the parameter values of the cross arms. The rigidity and the strength of the three-dimensional structure model are obtained through finite element calculation, namely the rigidity and the strength of the main rod of the transmission line tower and the rigidity and the strength of the cross arm are calculated, so that the actual working conditions of the main rod and the cross arm of the transmission line steel tube tower applied to the field are more consistent, but a large amount of redundancy is generated; the design standard requirement is met, meanwhile, the material can be saved, and the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for constructing a three-dimensional model of a steel pipe tower of a power transmission line according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, in combination with the embodiment of the present invention, a method for constructing a three-dimensional model of a steel pipe tower of a power transmission line is provided, which includes:
s101: acquiring a parameter value and a cross arm parameter value of a main rod of a transmission line tower; automatically generating a three-dimensional structure model of the steel tube tower of the power transmission line according to the parameter values of the main rod of the tower and the parameter values of the cross arm; the parameters of the main rod of the steel pipe tower (the main rod is a main vertical bearing component of the steel pipe tower) comprise: the method comprises the following steps that the weight of a main rod is estimated, the total height of the main rod (the total height of a tower is represented, namely the height from the lowest end to the topmost end of the tower, usually the height from a base surface to the topmost end of the tower, when an insertion type base is used, the part inserted into the base is also calculated in the total height of the main rod), the section shape of the main rod, the diameter of a circumscribed circle of the section of the top of the main rod, the diameter of a circumscribed circle of the section of the bottom of the main rod, the taper (the taper is the taper; the parameters of the cross arm (the cross arm is connected with the near end of the top of the main rod, is parallel to the ground and is used for bearing the power transmission line; the cross arm can be made of steel) comprise: whether the cross arms are symmetrically arranged or not, the number of hanging points of each cross arm, the elevation of the hanging points on each cross arm, the root diameter of each cross arm and the tip diameter of each cross arm;
s102: acquiring the stress of the steel tube tower of the power transmission line, applying the stress of the steel tube tower of the power transmission line to a three-dimensional structure model, wherein the three-dimensional model can visually display the structure of the steel tube tower of the power transmission line, but steel materials with different strengths cannot be directly seen from a three-dimensional graph and are determined by checking corresponding attribute values in a background or a calculation book, carrying out finite element calculation on the three-dimensional structure model, and obtaining the rigidity and the strength of the three-dimensional structure model through the finite element calculation, namely obtaining the rigidity and the strength of a main rod and the rigidity and the strength of a cross arm through the finite element calculation;
s103: when the rigidity and the strength of the main rod meet the design requirements and the rigidity and the strength of the cross arm meet the design requirements, the three-dimensional structure model of the steel pipe tower of the power transmission line is converted into a two-dimensional graph, namely, the two-dimensional engineering drawing is used for production, manufacturing and on-site.
According to the method, the three-dimensional model of the transmission line steel pipe tower meeting the design requirements can be generated by constructing the transmission line steel pipe tower through the three-dimensional model without adopting the design experience of designers and by acquiring the parameter values of the main rod of the transmission line tower and the parameter values of the cross arms. The rigidity and the strength of the three-dimensional structure model are obtained through finite element calculation, namely the rigidity and the strength of the main rod of the transmission line tower and the rigidity and the strength of the cross arm are calculated, so that the actual working conditions of the main rod and the cross arm of the transmission line steel tube tower applied to the field are more consistent, but a large amount of redundancy is generated; the design standard requirement is met, meanwhile, the material can be saved, and the cost is reduced.
Preferably, the acquiring of the stress of the steel tube tower of the power transmission line specifically comprises:
acquiring meteorological conditions of an area used by the steel tube tower of the power transmission line through a meteorological condition database, wherein the meteorological conditions comprise: air temperature range, wind power range; inputting the meteorological conditions into a load generator, and generating a load borne by a steel pipe tower of the power transmission line through the load generator; the load born by the steel tube tower of the power transmission line specifically comprises: wire load, wind load, ice coating load. The accuracy of the region used by the steel tube tower of the power transmission line can be obtained through the meteorological condition database, so that the numerical value of the load applied to the steel tube tower of the power transmission line related to the meteorological condition can be more accurate. The load generator generates the load applied to the steel tube tower of the power transmission line according to meteorological conditions, and the accuracy of the load numerical value is further guaranteed. The redundancy of the main rod and the cross arm design caused by adopting manual estimation (generally, estimation values are much larger than real values) is avoided.
Preferably, the weather condition database comprises weather data from national standard weather regions in the building structure load regulations or local weather data collected by a weather bureau at the location of the transmission line tower.
Preferably, the stress of the steel pipe tower of the power transmission line is applied to the three-dimensional structure model, and finite element calculation is carried out, and the method specifically comprises the following steps:
generating different working conditions of stress of the steel tube tower of the power transmission line according to the geological and climatic conditions of the area where the steel tube tower of the power transmission line is arranged; the loads borne by the steel tube towers of the power transmission line under different working conditions are different; because the loads borne by the steel tube towers of the power transmission line in different seasons are different under the influence of geological and climatic conditions of an area where the steel tube towers of the power transmission line are arranged, the stress of the steel tube towers of the power transmission line under different conditions is fully considered, so that the steel tube towers of the power transmission line under each working condition can meet the requirements on strength and rigidity, finite element calculation is carried out on the steel tube towers of the power transmission line under each working condition in sequence, whether the rigidity and the strength of the steel tube towers of the power transmission line applied to the current three-dimensional structure model meet the requirements or not is checked, and if one of the rigidity and the strength of a main rod of the steel tube tower in the current three-dimensional structure model is unqualified; or one of the rigidity and the strength of the cross arm is unqualified, the wall thickness of the cross arm needs to be adjusted, or the wall thicknesses of the main rod and the cross arm and the installation position of the cross arm need to be adjusted simultaneously.
Preferably, when the power transmission line steel pipe tower is a branch pole, because the branch pole tower has a plurality of different voltage grades, the different voltage grades can correspond to different lead models, and each loop also has an own incoming line angle and outgoing line angle, different voltage grades, ground lead line models, a turning-in angle, a conductive line hanging point, a front hanging point and a rear hanging point which are separated from each other (the hanging point comprises a hanging point on a cross arm and a hanging point on a pole body, the front and rear separation is used for describing the trend of the loop clearly), a three-dimensional structure model of the branch pole is generated, loads borne by the power transmission line steel pipe tower are generated through a concentrated load generator, different working conditions of stress of the branch pole are generated, and the loads borne by the power transmission line steel pipe tower are applied to the three-dimensional structure model of the branch pole under different working conditions, for calculating the stiffness and strength of the bifurcation stem by finite element calculation.
Preferably, the load generator generates the load borne by the steel tube tower of the transmission line, and stores the borne load in an x.ttt format file or an x.nsa format file, and the file format is adopted to store the borne load, so that the borne load can be directly called when needed again without being regenerated. And when the stress of the steel tube tower of the power transmission line is applied to the three-dimensional structure model, introducing the TTT format file or NSA format file of the load to generate the stress of the steel tube tower of the power transmission line. TTT format and NSA format can be mutually converted, so that the load file can be converted into a format meeting the requirements when being reused at later stage, and the load file can be quickly imported
Preferentially, the stress of the steel pipe tower of the power transmission line is applied to the three-dimensional structure model, and finite element calculation is carried out, and the method specifically comprises the following steps:
when the rigidity and the strength of the main rod do not meet the design requirements or the rigidity and the strength of the cross arm do not meet the design requirements, the wall thicknesses of the main rod and the cross arm are automatically adjusted, the wall thicknesses of the main rod and the cross arm are optimized, the three-dimensional structure model of the transmission line steel pipe tower is regenerated and automatically generated, finite element calculation is carried out on the new three-dimensional structure model of the transmission line steel pipe tower until the rigidity and the strength of the new three-dimensional structure model meet the design requirements, namely the rigidity and the strength of the main rod of the new three-dimensional structure model meet the design requirements, and the rigidity and the strength of the cross arm.
Preferably, S104: according to the parameter value automatic generation mobile jib of transmission line shaft tower mobile jib and connect used connected mode between each section, specifically include: flange connection, welding and splicing;
according to the parameter value of transmission line shaft tower mobile jib and the automatic mode of being connected of cross arm and mobile jib that generates of cross arm parameter value, specifically include: flange connection and welding.
Preferably, S105: further comprising: the strength of the connection mode is carried out between each section in the main check rod, and the strength of the connection mode between the cross arm and the main check rod is used, so that the strength of the whole transmission line steel pipe tower meets the design requirement.
Preferably, S106: when the rigidity and the strength of the three-dimensional structure model meet the design requirements, the method further comprises the following steps: and generating a calculation book of the steel tube tower of the power transmission line. Data generated in the process from creation of the main rod to cross arm and finite element calculation can generate a calculation book, and the calculation book is displayed in the forms of characters, icons and the like for record, so that the data can be conveniently checked in the later period.
It should be understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not intended to be limited to the specific order or hierarchy presented.
In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. To those skilled in the art; various modifications to these embodiments will be readily apparent, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A three-dimensional model construction method of a steel pipe tower of a power transmission line is characterized by comprising the following steps:
acquiring a parameter value and a cross arm parameter value of a main rod of a transmission line tower; automatically generating a three-dimensional structure model of the steel tube tower of the power transmission line according to the parameter values of the main rod of the tower and the parameter values of the cross arm; the parameters of the main rod of the steel pipe tower comprise: the weight estimation of the main rod, the total height of the main rod, the section shape of the main rod, the diameter of a circumscribed circle of the section of the top of the main rod, the diameter of a circumscribed circle of the section of the bottom of the main rod, the taper and the connection mode inside the main rod are carried out; the cross arm parameters include: whether the cross arms are symmetrically arranged or not, the number of hanging points of each cross arm, the elevation of the hanging points on each cross arm, the root diameter of each cross arm and the tip diameter of each cross arm;
acquiring the stress of the steel tube tower of the power transmission line, applying the stress of the steel tube tower of the power transmission line to the three-dimensional structure model, performing finite element calculation, and obtaining the rigidity and the strength of the three-dimensional structure model through the finite element calculation;
and when the rigidity and the strength of the three-dimensional structure model meet the design requirements, converting the three-dimensional structure model of the steel pipe tower of the power transmission line into a two-dimensional graph.
2. The method for constructing the three-dimensional model of the electric transmission line steel pipe tower according to claim 1, wherein the obtaining of the stress of the electric transmission line steel pipe tower specifically comprises:
acquiring meteorological conditions of an area used by the steel tube tower of the power transmission line through a meteorological condition database, wherein the meteorological conditions comprise: air temperature range, wind power range;
inputting the meteorological conditions into a load generator, and generating a load borne by a steel pipe tower of the power transmission line through the load generator; the load born by the steel tube tower of the power transmission line specifically comprises: wire load, wind load, ice coating load.
3. The method for constructing a three-dimensional model of a steel tube tower for an electric transmission line according to claim 2,
the meteorological condition database comprises meteorological data of a national standard meteorological area in the building structure load specification or local meteorological data acquired by a meteorological office at the location of a power transmission line tower.
4. The method for constructing the three-dimensional model of the electric transmission line steel pipe tower according to claim 2, wherein the stress of the electric transmission line steel pipe tower is applied to the three-dimensional structure model, and finite element calculation is performed, and the method specifically comprises the following steps:
generating different working conditions of stress of the steel tube tower of the power transmission line according to the geological and climatic conditions of the area where the steel tube tower of the power transmission line is arranged; the loads borne by the steel tube towers of the power transmission line under different working conditions are different;
and sequentially carrying out finite element calculation on the steel tube towers of the power transmission line under each working condition.
5. The method for constructing a three-dimensional model of a steel tube tower of an electric transmission line according to claim 2, wherein when the steel tube tower of the electric transmission line is a branch rod, different voltage levels, types and turning angles of a ground wire, a wire hanging point, a front hanging point and a rear hanging point are required to be set for the branch rod, and different working conditions of stress of the branch rod are generated.
6. The three-dimensional model building method of the electric transmission line steel pipe tower according to claim 2, characterized in that the load borne by the electric transmission line steel pipe tower is generated through a load generator, and the borne load is stored in a TTT format file or an NSA format file, wherein the TTT format and the NSA format can be mutually converted;
and when the stress of the steel tube tower of the power transmission line is applied to the three-dimensional structure model, introducing the TTT format file or NSA format file of the load to generate the stress of the steel tube tower of the power transmission line.
7. The method for constructing the three-dimensional model of the electric transmission line steel pipe tower according to claim 1, wherein the stress of the electric transmission line steel pipe tower is applied to the three-dimensional structure model, and finite element calculation is performed, and the method specifically comprises the following steps:
and when the rigidity and the strength of the main rod do not meet the design requirements or the rigidity and the strength of the cross arm do not meet the design requirements, adjusting the wall thicknesses of the main rod and the cross arm, regenerating a three-dimensional structure model for automatically generating the steel tube tower of the power transmission line, and carrying out finite element calculation on the new three-dimensional structure model of the steel tube tower of the power transmission line until the rigidity and the strength of the new three-dimensional structure model meet the design requirements.
8. The method for constructing the three-dimensional model of the electric transmission line steel pipe tower according to claim 1, wherein:
according to the parameter value automatic generation mobile jib of transmission line shaft tower mobile jib and connect used connected mode between each section, specifically include: flange connection, welding and splicing are carried out,
according to the parameter value of transmission line shaft tower mobile jib and the automatic mode of being connected of cross arm and mobile jib that generates of cross arm parameter value, specifically include: flange connection and welding.
9. The method for constructing the three-dimensional model of the steel tube tower of the power transmission line according to claim 1, wherein when the rigidity and the strength of the main rod meet the requirements and the rigidity and the strength of the cross arm meet the requirements, the method further comprises the following steps:
the strength of the connection mode is carried out between each section in the main check rod, and the strength of the connection mode between the cross arm and the main check rod is used, so that the strength of the whole transmission line steel pipe tower meets the design requirement.
10. The method for constructing the three-dimensional model of the steel tube tower of the power transmission line according to claim 1, wherein when the rigidity and the strength of the three-dimensional structure model meet design requirements, the method further comprises the following steps:
and generating a calculation book of the steel tube tower of the power transmission line.
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