Three-dimensional design system and method for assembling large transformer iron core

Abstract

The invention belongs to the field of three-dimensional digitization, and particularly relates to a three-dimensional design system for large transformer iron core assembly, which comprises an iron core business rule table used for expressing execution logic and rules of each module for iron core assembly business; the parameterized template library is used for defining each assembly structure and part composition required in iron core assembly; the parameterization design module is used for receiving the calculation order data, the iron core business rule table and the rule of the iron core business rule table, calling a template of a parameterization template library, generating an iron core three-dimensional model according to the calculation order data and design data in parameterization design in combination with the rule of the iron core business rule table and the called template, and assembling the iron core three-dimensional model; and the marking function module is used for automatically generating a BOM table and a technical code of the iron core three-dimensional model according to the iron core three-dimensional model assembled by the parameterization design module. According to the method, standardization, normalization and unification of design input are achieved, and human errors caused in the manual calculation and model creation process are reduced.

Description

Technical Field

[0001] The present invention belongs to the field of three-dimensional digitization, and in particular relates to a three-dimensional design system and method for assembling a large transformer core. Background Art

[0002] The core part is the basic component of the transformer, consisting of a magnetic conductor and a clamping device. It has two functions: (1) It constitutes the magnetic circuit of the transformer, which is the medium for the conversion of electric energy between the primary and secondary circuits. (2) Through the clamping device of the core, the magnetic conductor becomes a complete structure, forming the skeleton of the transformer. In addition to the core body, it also includes the following accessories: fasteners: such as clamps, pull plates, pull straps, upper beams, pads, side beams, screws, straps and wooden blocks; insulating parts: such as clamp insulation, pull plate insulation, pad insulation; grounding plates and other accessories. The structural design of the core assembly part is a key link in the design of large transformers. The rationality of its layout and selection is an important indicator of the design level of large transformers. At present, the Chinese transformer industry has shifted from a stage dominated by quantity expansion to a stage dominated by quality improvement. The traditional core structure design method can no longer adapt to the fierce competition in the market. There is an urgent need for a design system and method that can improve quality and efficiency, support customized needs, and quickly iterate.

[0003] Traditional core assembly 3D design uses calculation sheets and layout drawings provided by the design supervisor as input for the 3D design. The core assembly is analyzed and refined, and the selection and location of each part are determined based on design regulations and past design experience. The size and position of each part are then calculated. This process is complex and tedious, with a high rate of manual error, and fails to establish a standardized and normalized workflow. During part creation and assembly, designers need to manually set parameters, which involves a significant amount of calculation work. Considering the coordination between the core and other large components and the practicalities of workshop engineering, the frequent iterations, often due to incomplete early considerations, can easily lead to many unreasonable designs or even design errors. After the 3D design is completed, the engineering drawings must be manually annotated and uploaded to the PLM to generate the BOM and basic information required for workshop production, further increasing the workload for core 3D design. Summary of the Invention

[0004] The present invention aims to provide a 3D design system and method for large transformer core assembly. During part creation and assembly, designers only need to enter key parameters to quickly complete assembly. The system automatically obtains the product's official serial number and integrates with the PLM (Product Material Management) to quickly generate the required BOM structure for production. This addresses the complexity and high error rate of traditional core assembly design, which often leads to a lack of standardized workflow.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a three-dimensional design system for large transformer core assembly, including: a core business rule table, a parameterized template library, a parameterized design module and a number function module;

[0006] The core business rule table is used to describe the execution logic and rules of each module for the core assembly business;

[0007] A parameterized template library for defining each assembly structure and component composition required in core assembly;

[0008] The parametric design module is used to receive the calculation order data, designer design data, core business rule table and the rules of the core business rule table sent by the host computer, call the template of the parametric template library, and generate the core 3D model through its CREO 3D modeling module and assemble it according to the calculation order data, designer design data and the rules of the core business rule table and the called template;

[0009] The numbering function module is used to automatically generate the BOM table corresponding to the core 3D model and the technical code of the core 3D model according to the core 3D model assembled by the parametric design module.

[0010] The core business rule table includes: an assembly table, a logic table, and a template table displayed in the form of an Excel table;

[0011] The assembly table is used to filter out the corresponding assembly logic according to the business logic of the assembly table through the structure selection data selected in the logic table;

[0012] Logic table, used to define the corresponding relationship parameters including structure information, position information, and model size information required between model generation and assembly coordinates;

[0013] The template table is used to associate the model defined in the assembly table with the parameters of the model size information corresponding to the relationship parameters in the logic table.

[0014] The assembly table includes various components, selection conditions, and assembly positions;

[0015] The logic table includes parameters used for assembly positions and parameters used for component sizes;

[0016] The template table establishes a one-to-one correspondence between the parameters of each model in the core parameterized template library and the parameters in the logic table.

[0017] The display content of the assembly table includes: module name, template or sub-component number, template or sub-component name, sub-component installation coordinates, layout file coordinate definition, and template selection conditions;

[0018] The display content of the logic table includes: display name, attribute name, internal name, input method, and parameter attribute description;

[0019] The display content of the template table includes: CREO template number, CREO template name and definition of parameters in each template.

[0020] The parameterized template library includes: a core assembly common parts library and a core assembly standard parts library, so as to establish a basic component library required for the core three-dimensional model.

[0021] The models prefabricated in the parametric template library include: core assembly, clamp assembly and pull screw assembly;

[0022] Each assembly contains a skeleton model, in which the assembly relationship is preset through the coordinate system.

[0023] The calculation data includes: core parameter data, structure selection data and core structure size information;

[0024] The core parameter data includes: core window height, window range, and core diameter value, which are used to construct the core;

[0025] The structural selection data includes: fully insulated structure, whether there is an oil guide box, whether there is a reactor, and other data used to determine the specific core type.

[0026] A method for assembling a core of a large transformer core three-dimensional design system comprises the following steps:

[0027] S1: Describe the core assembly rules and all the parameter definitions and data structures required for core assembly through the core business table, and send them to the parametric design module;

[0028] S2: The designer inputs the calculation data and design data into the parametric design module, and the parametric design module calls the parametric template library according to the rules of the core business rule table;

[0029] S3: The parametric design module designs the core according to the core assembly rules described in the core business table, inputs the parameters in the calculation data, and simultaneously determines whether there are similar large transformer components.

[0030] S3-1: If the corresponding data in the calculation order data meets the set corresponding data parameter range of similar transformer major components, then after the corresponding past transformer product parameters are synchronized, step S4 is executed;

[0031] S3-2: On the contrary, if there is no similar large transformer component, directly execute step S4;

[0032] S4: The parametric design module generates a core 3D model based on the calculation order data, the designer's design data, the rules of the core business rule table, and the called template through its CREO 3D modeling module and assembles it to obtain the core 3D model;

[0033] S5: Through non-rule adjustment, complete the independent design of non-standard parts, replace the parts generated by the original rules on the model one by one, generate the adjusted core 3D engineering drawing, and output it to the number function module;

[0034] S6: The numbering function module automatically generates corresponding technical codes for the engineering drawings and completes the three-dimensional design of the transformer core assembly.

[0035] In step S4, the parametric design module generates core parts and assembles the core three-dimensional model, specifically:

[0036] 1-1) The parametric design module screens the assembly structure in the assembly table of the core business rule table by inputting the parameters of the calculation data and the structural selection data in the designer's design data;

[0037] 1-2) The parametric design module determines the positional relationship of each component in the core assembly by calculating the core parameter data in the order data, and pre-defines the assembly coordinates of the core large component according to the logic table in the core business rule table;

[0038] 1-3) The parametric design module transfers the core structure dimension information in the calculation data into the template table and associates it with the parameters of the model dimension information of the corresponding relationship parameters in the logic table to generate the various components required for the assembly of the core large component;

[0039] 1-4) The coordinates defined in the generated component installation and assembly table are installed one-to-one in the core assembly by the parameter design module through its CREO 3D modeling module to obtain the core 3D model.

[0040] In step S5, the non-standard parts are independently designed through non-regular adjustment, and the parts generated according to the original rules on the model are replaced one by one to generate the adjusted three-dimensional engineering drawing of the core, specifically:

[0041] To adjust the position of non-standard parts in an assembly, the designer inputs the X, Y, and Z translations relative to the original assembly position, as well as the rotations around the X, Y, and Z axes, and adjusts the position of the sub-parts in the model to obtain the adjusted non-standard parts. The original parts are then replaced with the adjusted non-standard parts.

[0042] The present invention has the following beneficial effects and advantages:

[0043] 1. This invention achieves a unified structural design for large AC transformer core assembly. Compared with traditional three-dimensional design, the parametric design module, combined with the core business rule table and parametric template library, achieves standardization, normalization, and unification of design input, reducing human errors caused by manual calculation and model creation.

[0044] 2. The design logic of the present invention is solidified in the system in a digital form. The system strictly implements the predetermined logic in accordance with each table in the core business rule table to design the product and confirm the strict implementation of the design rules.

[0045] 3. This invention enables rapid iteration of fine-tuned solutions during the design process, ultimately reducing the workload of manual standards and PLM integration. By reducing complex and tedious analysis and refinement and relying on design regulations and past design experience, design efficiency has been improved by 40% and design quality by 70%.

[0046] 4. In the process of creating parts and assembling the parts according to the present invention, the designer does not need to manually set parameters and perform heavy calculations. Instead, the designer only needs to input the required core technical parameters and can establish a three-dimensional core model. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a structural diagram of the large transformer core three-dimensional design system of the present invention;

[0048] Figure 2 This is a flow chart of the three-dimensional design method for a large transformer core according to the present invention;

[0049] Figure 3 This is the main interface diagram of the large transformer core three-dimensional design system of the present invention;

[0050] Figure 4 This is an effect diagram of the core model generated by the present invention. DETAILED DESCRIPTION

[0051] The description of the embodiments in this specification should be combined with the corresponding drawings, which should be considered a complete part of this specification. In the drawings, the shapes and thicknesses of the embodiments may be exaggerated and indicated for simplicity or convenience. Furthermore, the various structural components in the drawings will be described separately. It is worth noting that components not shown in the drawings or not described in words are known to those of ordinary skill in the art.

[0052] The description of the embodiments herein and any references to directions and orientations are for ease of description only and are not to be construed as limiting the scope of the present invention. The following description of the preferred embodiments may involve combinations of features, which may exist independently or in combination. The present invention is not specifically limited to the preferred embodiments. The scope of the present invention is defined by the claims.

[0053] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0054] like Figure 1 Figure 1 shows the structure of the 3D design system for large transformer cores. This system, also known as an ADP (Assisted Design Processing) system, uses parameterization to rapidly generate product models, pre-sets engineering drawing annotations using templates, and integrates with PLM.

[0055] The system includes a core logic table that integrates design rules, and pre-built core template libraries, common parts libraries, and standard parts libraries within the PLM. Integration with the ADP system allows the ADP system to access basic data for order calculations. Through this integration with the PLM, models can be directly uploaded to the PLM database on the Creo client to generate a bill of materials (BOM) structure.

[0056] The present invention comprises: an iron core business rule table, a parameterized template library, a parameterized design module and a request function module;

[0057] (1) Iron Core Business Rules Table

[0058] The core business rule table is used to describe the execution logic and rules of each module for the core assembly business; it includes the component size information, assembly position information, parameter definition, and logical calculation rules between parameters involved in core assembly;

[0059] Among them, the core business rule table includes: assembly table, logic table and template table displayed in Excel form;

[0060] The assembly table contains various components, selection conditions, and assembly positions. It is used to filter out the corresponding assembly logic according to the business logic of the assembly table through the structure selection data selected in the logic table.

[0061] The logic table contains the parameters used for assembly position and component size, which is used to define the corresponding relationship parameters between model generation and assembly coordinates, including structural information, position information, and model size information;

[0062] The template table is used to associate the model defined in the assembly table with the model size information parameters of the corresponding relationship parameters in the logic table. This achieves a one-to-one correspondence between the parameters of each model in the parametric template library and the parameters in the logic table.

[0063] In this embodiment, the core business table is completed in the form of an Excel table by sorting out design rules and design experience; wherein, the display content of the assembly table includes: module name, template or sub-component number, template or sub-component name, sub-component installation coordinates, layout file coordinate definition, and template selection conditions.

[0064] The display content of the logic table includes: display name, attribute name, internal name, input method, and parameter attribute description;

[0065] The displayed content of the template table includes: CREO template number, CREO template name and definition of parameters in each template.

[0066] (2) Parameterized template library

[0067] A parameterized template library for defining each assembly structure and component composition required in core assembly;

[0068] In this embodiment, the parametric template library defines parameter-driven CREO templates based on product design rules. During the parametric design process, parameter input drives the generation of different component instances. These component instances are then assembled into the core assembly according to assembly logic. These parameter-driven CREO templates are known as parametric templates. Parametric templates refer to core templates. The project also completed common and standard parts templates to establish the basic component library required for the core 3D model.

[0069] The prefabricated models in the parametric template library include: core assembly, clamp assembly and pull screw assembly; each assembly contains a skeleton model, in which the assembly relationship is preset through the coordinate system.

[0070] (3) Parametric design module

[0071] The parametric design module in the present invention is designed based on the ADP system. The parametric design module is used to receive the calculation order data, designer design data, core business rule table and the rules of the core business rule table sent by the host computer and call the template of the parametric template library. According to the calculation order data, designer design data and the rules of the core business rule table, according to the called template, the core three-dimensional model is generated and assembled through its CREO three-dimensional modeling module;

[0072] Among them, the calculation data includes: core parameter data, structure selection data and core structure size information;

[0073] Core parameter data, including core window height, window range, and core diameter values used for core construction;

[0074] Structural selection data, including: fully insulated structure, whether there is an oil guide box, whether there is a reactor, and other parameters used to determine the specific core type.

[0075] In this embodiment, the parametric design module uses predefined design rules. Designers use the system's navigation interface to sequentially input product design parameters. Based on these input parameters, the system then calls the CREO parametric template to generate a CREO model instance. Finally, according to the assembly logic, the core assembly is completed layer by layer.

[0076] (IV) Number request function module

[0077] The numbering function module is used to automatically generate the BOM table corresponding to the core 3D model and the technical code of the core 3D model according to the core 3D model assembled by the parametric design module.

[0078] The Request Number function module initiates a request from the system. The PLM side processes the coding service and feeds the results back to the system, allowing the product to obtain the official technical code. When executing the Request Number operation, ADP will remove duplicates from temporary number models generated based on the same CREO parametric template and with the same driving parameters, replacing them with the same model.

[0079] like Figure 2 FIG. 1 is a flow chart of a large transformer core three-dimensional design method according to the present invention. A core assembly method of a large transformer core three-dimensional design system according to the present invention comprises the following steps:

[0080] S1: Describe the core assembly rules and all the parameter definitions and data structures required for core assembly through the core business table, and send them to the parametric design module;

[0081] S2: The designer inputs the calculation data into the parametric design module, and the parametric design module calls the parametric template library according to the rules of the core business rule table;

[0082] S3: The parametric design module designs the core according to the core assembly rules described in the core business table, inputs the parameters in the calculation data, and simultaneously determines whether there are similar large transformer components.

[0083] S3-1: If the corresponding data in the calculation order data meets the set corresponding data parameter range of similar transformer major components, then after the corresponding past transformer product parameters are synchronized, step S4 is executed;

[0084] S3-2: On the contrary, if there is no similar large transformer component, directly execute step S4;

[0085] S4: The parametric design module generates a core 3D model based on the calculation order data, the designer's design data, the rules of the core business rule table, and the called template through its CREO 3D modeling module and assembles it to obtain the core 3D model;

[0086] S4-1: The parametric design module selects the assembly structure in the assembly table of the core business rule table by inputting the parameters of the calculation order data and the structural selection data in the designer's design data;

[0087] S4-2: The parametric design module determines the positional relationship of each component in the core assembly by calculating the core parameter data in the order data, and pre-defines the assembly coordinates of the core large component according to the logic table in the core business rule table;

[0088] S4-3: The parametric design module transfers the core structure dimension information in the calculation data into the template table and associates it with the parameters of the model dimension information of the corresponding relationship parameters in the logic table to generate the various components required for the assembly of the core large component;

[0089] S4-4: The parameter design module uses its CREO 3D modeling module to install the defined coordinates in the generated component installation and assembly table into the core assembly in a one-to-one correspondence manner to obtain a core 3D model.

[0090] S5: Through non-rule adjustment, complete the independent design of non-standard parts, replace the parts generated by the original rules on the model one by one, generate the adjusted core 3D engineering drawing, and output it to the number function module;

[0091] Among them, irregular adjustment refers to adjusting the CREO model generated by the ADP system. Irregular adjustment is also completed through the system, which can record parameter information and facilitate data reuse of similar products. The specific steps of irregular adjustment are as follows:

[0092] To adjust the position of non-standard parts in an assembly, the designer inputs the X, Y, and Z translations relative to the original assembly position, as well as the rotations around the X, Y, and Z axes, and adjusts the position of the sub-parts in the model to obtain the adjusted non-standard parts. The original parts are then replaced with the adjusted non-standard parts.

[0093] S6: The numbering function module automatically generates corresponding technical codes for the engineering drawings and completes the three-dimensional design of the transformer core assembly.

[0094] Specifically, once the model is confirmed to be correct, it can be officially numbered through the system's number management. The purpose of obtaining codes for large components and subcomponents is to obtain official codes for models with temporary numbers within large components. A model's temporary code is a temporary state; once it obtains a formal code, it becomes officially numbered. The code acquisition logic for variable universal parts is based on the advanced configurable master part code of the variable universal part. Based on its deformation parameters, the advanced configurable module of the PLM assigns a serial number to the variable universal part instance code.

[0095] like Figure 3 The following is the main interface diagram of the large transformer core 3D design system of the present invention. In this embodiment, the 3D core structure design requires input of key parameters and selection. It is mainly divided into the core lamination part, assembly component part, welded parts, web, and grounding. During the design process, the design process is planned in detail from top to bottom to avoid errors and omissions made by the designer. Figure 3 As shown, after the system has set the parameters, the model can be generated. After the model is generated, you can click on assemble to assemble the generated model. The model effect after assembly in this embodiment is as follows Figure 4 shown.

[0096] The above description is only an embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modification, equivalent replacement, improvement, expansion, etc. made within the spirit and principle of the present invention are included in the scope of protection of the present invention.

Claims

1. A three-dimensional design system for large transformer core assembly, characterized in that: include: Core business rule table, parameterized template library, parameterized design module and numbering function module; The core business rule table is used to describe the execution logic and rules of each module for the core assembly business; A parameterized template library for defining each assembly structure and component composition required in core assembly; The parametric design module is used to receive the calculation order data, designer design data, core business rule table and the rules of the core business rule table sent by the host computer, call the template of the parametric template library, and generate the core 3D model through its CREO 3D modeling module and assemble it according to the calculation order data, designer design data and the rules of the core business rule table and the called template; The numbering function module is used to automatically generate the BOM table corresponding to the core 3D model and the technical code of the core 3D model according to the core 3D model assembled by the parametric design module.

2. A three-dimensional design system for large transformer core assembly according to claim 1, characterized in that: The core business rule table includes: an assembly table, a logic table, and a template table displayed in the form of an Excel table; The assembly table is used to filter out the corresponding assembly logic according to the business logic of the assembly table through the structure selection data selected in the logic table; Logic table, used to define the corresponding relationship parameters including structure information, position information, and model size information required between model generation and assembly coordinates; The template table is used to associate the model defined in the assembly table with the parameters of the model size information corresponding to the relationship parameters in the logic table.

3. A three-dimensional design system for large transformer core assembly according to claim 2, characterized in that: The assembly table includes various components, selection conditions, and assembly positions; The logic table includes parameters used for assembly positions and parameters used for component sizes; The template table establishes a one-to-one correspondence between the parameters of each model in the core parameterized template library and the parameters in the logic table.

4. A three-dimensional design system for large transformer core assembly according to claim 2, characterized in that: The display content of the assembly table includes: module name, template or sub-component number, template or sub-component name, sub-component installation coordinates, layout file coordinate definition, and template selection conditions; The display content of the logic table includes: display name, attribute name, internal name, input method, and parameter attribute description; The display content of the template table includes: CREO template number, CREO template name and definition of parameters in each template.

5. The three-dimensional design system for large transformer core assembly according to claim 1, characterized in that: The parameterized template library includes: a core assembly common parts library and a core assembly standard parts library, so as to establish a basic component library required for the core three-dimensional model.

6. A three-dimensional design system for large transformer core assembly according to claim 1 or 5, characterized in that: The models prefabricated in the parametric template library include: core assembly, clamp assembly and pull screw assembly; Each assembly contains a skeleton model, in which the assembly relationship is preset through the coordinate system.

7. The three-dimensional design system for large transformer core assembly according to claim 1, characterized in that: The calculation data includes: core parameter data, structure selection data and core structure size information; The core parameter data includes: core window height, window range, and core diameter value, which are used to construct the core; The structural selection data includes: fully insulated structure, whether there is an oil guide box, whether there is a reactor, and other data used to determine the specific core type.

8. The core assembly method of a large transformer core three-dimensional design system according to claim 1, characterized in that: The following steps are involved: S1: Describe the core assembly rules and all the parameter definitions and data structures required for core assembly through the core business table, and send them to the parametric design module; S2: The designer inputs the calculation data into the parametric design module, and the parametric design module calls the parametric template library according to the rules of the core business rule table; S3: The parametric design module designs the core according to the core assembly rules described in the core business table, inputs the parameters in the calculation data, and simultaneously determines whether there are similar large transformer components. S3-1: If the corresponding data in the calculation order data meets the set corresponding data parameter range of similar transformer major components, then after the corresponding past transformer product parameters are synchronized, step S4 is executed; S3-2: On the contrary, if there is no similar large transformer component, directly execute step S4; S4: The parametric design module generates a core 3D model based on the calculation order data, the designer's design data, the rules of the core business rule table, and the called template through its CREO 3D modeling module and assembles it to obtain the core 3D model; S5: Through non-rule adjustment, complete the independent design of non-standard parts, replace the parts generated by the original rules on the model one by one, generate the adjusted core 3D engineering drawing, and output it to the number function module; S6: The numbering function module automatically generates corresponding technical codes for the engineering drawings and completes the three-dimensional design of the transformer core assembly.

9. The assembly method of a large transformer core three-dimensional design system according to claim 1, characterized in that: In step S4, the parametric design module generates core parts and assembles the core three-dimensional model, specifically: 1-1) The parametric design module screens the assembly structure in the assembly table of the core business rule table by inputting the parameters of the calculation data and the structural selection data in the designer's design data; 1-2) The parametric design module determines the positional relationship of each component in the core assembly by calculating the core parameter data in the order data, and pre-defines the assembly coordinates of the core large component according to the logic table in the core business rule table; 1-3) The parametric design module transfers the core structure dimension information in the calculation data into the template table and associates it with the parameters of the model dimension information of the corresponding relationship parameters in the logic table to generate the various components required for the assembly of the core large component; 1-4) The coordinates defined in the generated component installation and assembly table are installed one-to-one in the core assembly by the parameter design module through its CREO 3D modeling module to obtain the core 3D model.

10. The assembly method of a large transformer core three-dimensional design system according to claim 1, characterized in that: In step S5, the non-standard parts are independently designed through non-regular adjustment, and the parts generated according to the original rules on the model are replaced one by one to generate the adjusted three-dimensional engineering drawing of the core, specifically: To adjust the position of non-standard parts in an assembly, the designer inputs the X, Y, and Z translations relative to the original assembly position, as well as the rotations around the X, Y, and Z axes, and adjusts the position of the sub-parts in the model to obtain the adjusted non-standard parts. The original parts are then replaced with the adjusted non-standard parts.

Images