Smooth aluminum cable auxiliary selection method and device

Abstract

The invention provides a smooth aluminum cable auxiliary selection method and device, and relates to the technical field of cables, and the method comprises the steps: S1, collecting environment parameters and use demands of a cable use site, inputting the environment parameters and use demands into a cable auxiliary selection device, and verifying the data integrity; s2, determining the material requirement of each part structure of the cable and the use requirement of the cable according to the environmental parameters of the cable use site, and establishing a preliminary cable structure; s3, calculating the minimum thickness of the aluminum sheath based on the requirement of the short-circuit current; and S4, inputting the maximum allowable cable diameter of the working environment, performing adaptation with the existing cable model based on the initial cable structure and the minimum thickness of the aluminum sheath, and determining an output result based on an adaptation result. According to the method, firstly, the initial cable structure and the minimum thickness of the aluminum sheath are established according to the field environment parameters and the use requirements, and are matched with the existing cable model, so that a large amount of data query time is saved, the cable selection efficiency is greatly improved, and the result accuracy is improved through data updating.

Description

Technical Field

[0001] The present invention relates to the field of cable technology, and in particular to a smooth aluminum cable auxiliary selection method and device. Background Art

[0002] As people's demand for electricity and information continues to grow, cables are widely used in various fields. There are many types of cables at present, and it is of great significance to choose the right cable for different usage scenarios.

[0003] Smooth aluminum cable is a type of power cable. Its characteristic is that the metal outer sheath of the cable product is produced with a smooth aluminum sheath. By using an aluminum sheath, the flat aluminum sheathed cable can reduce the weight of the cable product, improve the corrosion resistance of the cable product, and improve the waterproof performance and processing performance of the cable product.

[0004] The existing smooth aluminum cable selection mostly relies on manual selection after consulting multiple materials, lacking scientific and systematic selection methods and basis, resulting in low accuracy and efficiency of cable selection. Summary of the invention

[0005] The present invention provides a smooth aluminum cable auxiliary selection method and device, which are used to solve the defects in the prior art that there is a lack of scientific and systematic selection methods and bases, resulting in low accuracy and efficiency of cable selection.

[0006] In one aspect, the present invention provides a smooth aluminum cable auxiliary selection method, comprising:

[0007] Step S1, collecting environmental parameters and usage requirements of the cable usage site, inputting the environmental parameters and usage requirements into the cable auxiliary selection device and verifying data integrity;

[0008] Step S2, determining the material requirements of each part of the cable structure according to the environmental parameters of the cable use site, and establishing a preliminary cable structure according to the material requirements and the cable use requirements;

[0009] Step S3, calculating the minimum thickness of the aluminum sheath based on the short-circuit current requirement;

[0010] Step S4, input the maximum allowable cable diameter of the working environment, formulate recommended process parameters, adapt the existing cable models based on the preliminary cable structure and the minimum thickness of the aluminum sheath, and determine whether there is an existing cable model that meets the conditions. If there is an existing cable model that meets the conditions, output all existing cable models and their specifications that meet the conditions. If there is no existing cable model that meets the conditions, output the recommended process parameters of the cable.

[0011] Preferably, step S2 comprises:

[0012] Step S21, determining the material requirements of each part of the cable structure according to the environmental parameters of the cable use site;

[0013] Step S22, determining the materials applicable to the structures of the various parts of the cable according to the material requirements of the various parts of the cable;

[0014] Step S23, determining the applicable thickness range of each part of the cable structure according to the use requirements of the cable;

[0015] Step S24, combining the applicable materials and applicable thickness ranges of the various parts of the cable structure to obtain a preliminary cable structure.

[0016] Preferably, step S4 comprises:

[0017] Step S41, input the maximum allowable cable diameter of the working environment, generate the recommended process parameters of the cable according to the preliminary cable structure, the maximum allowable cable diameter of the working environment and the minimum thickness of the aluminum sheath, and directly output an error instruction if the recommended process parameters of the cable cannot be generated;

[0018] Step S42, adapting the preliminary cable structure to the existing cable models, when there is an existing cable model that meets the screening conditions, all existing cable models that meet the screening conditions are screened out as the first screening models, and when there is no existing cable model that meets the screening conditions, the recommended process parameters of the cable are directly output;

[0019] Step S43, determining whether the actual aluminum sheath thickness of the first screening model is greater than the minimum thickness of the aluminum sheath, screening out all models in the first screening model that meet the requirement that the actual aluminum sheath thickness is greater than the minimum thickness of the aluminum sheath as the second screening model, and directly outputting the recommended process parameters of the cable when the second screening model does not exist;

[0020] Step S44, determine whether the actual outer diameter of the second screening model is smaller than the maximum allowable cable diameter of the working environment, screen out all models in the second screening model that meet the requirement that the actual outer diameter is less than or equal to the maximum allowable cable diameter of the working environment for output; if the actual outer diameters of all models in the second screening model are larger than the maximum allowable cable diameter of the working environment, output the recommended process parameters of the cable.

[0021] Preferably, step S41 includes:

[0022] Step S411, determining whether the recommended process parameters of the cable can be generated, and if it is determined that the recommended process parameters of the cable cannot be generated, directly outputting an error reporting instruction;

[0023] Step S412, generating a first process parameter and a second process parameter;

[0024] Step S413, verifying whether the second process parameters meet the use standard, and outputting the recommended process parameters of the cable based on the verification result.

[0025] Preferably, step S411 determines whether the recommended process parameters of the cable can be generated based on the following formula;

[0026]

[0027] Among them, P 1 is the first judgment parameter; D max The maximum allowable cable diameter in the working environment; I 1 The maximum working current designed for the cable; K C is the current carrying coefficient of the cable; δ is the conductivity of the cable conductor material; U 1 The maximum working voltage designed for the cable; E i is the electric field strength that the i-th insulating material bears per unit thickness; ε i is the relative dielectric constant of the i-th insulating material; σ C is the ambient temperature influence coefficient; σ S is the influence coefficient of environmental humidity; min is the minimum value function; V is the minimum thickness of the aluminum sheath; L 0 is the unit cable length;

[0028] When P 1 If it is greater than or equal to 0, it is determined that the recommended process parameters for generating cables are suitable. 1 If it is less than 0, it is judged that the recommended process parameters of the cable cannot be generated, and the control directly outputs an error instruction.

[0029] Preferably, the first process parameters include:

[0030] First conductor radius:

[0031] Thickness of the first insulation layer:

[0032] Thickness of the first protective layer:

[0033] Among them, R 1 is the radius of the first conductor; H 1 is the thickness of the first insulating layer; D 1 is the thickness of the first protective layer; I 1 The maximum working current designed for the cable; K C is the current carrying coefficient of the cable; δ is the conductivity of the cable conductor material; U 1 The maximum working voltage designed for the cable; E i is the electric field strength that the i-th insulating material bears per unit thickness; ε iis the relative dielectric constant of the i-th insulating material; σ C is the ambient temperature influence coefficient; σ S is the environmental humidity influence coefficient; L 0 is the unit cable length; min is the minimum function.

[0034] Preferably, the second process parameters include:

[0035] Second conductor radius:

[0036] Among them, R 2 is the radius of the second conductor; I 1 The maximum working current designed for the cable; K C is the current carrying coefficient of the cable; δ is the conductivity of the cable conductor material; U 1 The maximum working voltage designed for the cable; L 0 is the unit cable length;

[0037] The method for determining the thickness of the second insulating layer is:

[0038] Step S4121, determine The corresponding insulation material type;

[0039] Among them, min is the minimum function; F i is the cost per unit volume of the i-th insulating material; π is the circumference of a circle; I 1 The maximum working current designed for the cable; K C is the current carrying coefficient of the cable; δ is the conductivity of the cable conductor material; U 1 The maximum working voltage designed for the cable; E i is the electric field strength that the i-th insulating material bears per unit thickness; ε i is the relative dielectric constant of the i-th insulating material; L 0 is the unit cable length;

[0040] Step S4122, determine the thickness of the second insulating layer to be

[0041] Among them, H 2 is the thickness of the second insulating layer; U 1 The maximum working voltage designed for the cable; ε s is the relative dielectric constant of the insulating material determined in step S01; E s The electric field strength that the insulating material is subjected to per unit thickness determined in step S4121;

[0042] Second protective layer thickness:

[0043] Among them, D2 is the thickness of the second protective layer; ln is the logarithmic function with e as the base; e is the natural base; M is the total number of physical properties of the cable; θ j is the influence coefficient of the jth physical property; τ j is the judgment parameter of the jth physical property. When the cable needs to have the jth physical property, τ j The value is 1. When the cable does not need to have the jth physical property, τ j The value is 0; N is the total number of types of protective layer materials; F b is the cost per unit volume of the b-th protective layer material; F 0 is the cost per unit volume of the protective layer material currently used; C is the ambient temperature influence coefficient; σ S is the environmental humidity influence coefficient.

[0044] Preferably, step S413 includes:

[0045] Step S4131, verifying whether the second process parameter meets the use standard;

[0046] P 2 =D max -2(R 2 +H 2 +D 2 +V);

[0047] Among them, P 2 is the second judgment parameter; D max R is the maximum allowable cable diameter in the working environment; 2 is the radius of the second conductor; H 2 is the thickness of the second insulating layer; D 2 is the thickness of the second protective layer; V is the minimum thickness of the aluminum sheath;

[0048] When P 2 is greater than or equal to 0, the second process parameter meets the use standard; when P 2 If it is less than 0, the second process parameter does not meet the use standard;

[0049] Step S4132: when the second process parameter meets the use standard, the recommended process parameter is generated based on the second process parameter and its corresponding material; when the second process parameter does not meet the use standard, the recommended process parameter is generated based on the first process parameter and its corresponding material.

[0050] A smooth aluminum cable auxiliary selection device, applied to the above-mentioned smooth aluminum cable auxiliary selection method, comprising:

[0051] An information storage module, used to store material requirements corresponding to various environmental parameters, characteristics of various cable structures, available thickness ranges of various cable structures, and material characteristics of commonly used materials;

[0052] Input and output module, used for data input and output;

[0053] Structural calculation module, used to generate preliminary cable structure, calculate the minimum thickness of aluminum sheath and formulate recommended process parameters of cable;

[0054] The adaptation module is used to adapt the calculation results of the structural calculation module to the existing cable model and output the adaptation results.

[0055] Preferably, the structure calculation module includes:

[0056] A material determination unit is used to determine the material requirements of each part of the cable according to the environmental parameters, and based on the material requirements, select the available materials corresponding to each part of the cable;

[0057] A sizing unit, for calculating the corresponding available size range of each part of the cable based on the corresponding available materials of each part of the cable, and generating a preliminary cable structure and a minimum thickness of the aluminum sheath;

[0058] The process parameter formulation unit is used to generate the recommended process parameters of the cable based on the preliminary cable structure, the minimum thickness of the aluminum sheath and the maximum allowable cable diameter of the working environment.

[0059] Compared with the prior art, the present invention has the following beneficial effects:

[0060] The present invention first establishes a preliminary cable structure according to the on-site environmental parameters and usage requirements, and then calculates the minimum thickness of the aluminum sheath based on the short-circuit current, matches it with the existing cable models, and determines whether there is an existing cable model that meets the usage requirements, thereby saving a lot of data query time and greatly improving the efficiency of cable selection. By regularly updating the existing cable data, the accuracy and comprehensiveness of the existing cable data are ensured, the occurrence of missed selection and wrong selection is avoided, and the accuracy of the cable selection results is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0062] Figure 1 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0064] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0065] Example 1

[0066] An embodiment of the present invention provides a smooth aluminum cable auxiliary selection method, comprising:

[0067] Step S1, collecting environmental parameters and usage requirements of the cable usage site, inputting the environmental parameters and usage requirements into the cable auxiliary selection device and verifying data integrity;

[0068] Step S2, determining the material requirements of each part of the cable structure according to the environmental parameters of the cable use site, and establishing a preliminary cable structure according to the material requirements and the cable use requirements;

[0069] Step S3, calculating the minimum thickness of the aluminum sheath based on the short-circuit current requirement;

[0070] Step S4, input the maximum allowable cable diameter of the working environment, formulate recommended process parameters, adapt the existing cable models based on the preliminary cable structure and the minimum thickness of the aluminum sheath, and determine whether there is an existing cable model that meets the conditions. If there is an existing cable model that meets the conditions, output all existing cable models and their specifications that meet the conditions. If there is no existing cable model that meets the conditions, output the recommended process parameters of the cable.

[0071] Preferably, step S2 comprises:

[0072] Step S21, determining the material requirements of each part of the cable structure according to the environmental parameters of the cable use site;

[0073] Step S22, determining the materials applicable to the structures of the various parts of the cable according to the material requirements of the various parts of the cable;

[0074] Step S23, determining the applicable thickness range of each part of the cable structure according to the use requirements of the cable;

[0075] Step S24, combining the applicable materials and applicable thickness ranges of the various parts of the cable structure to obtain a preliminary cable structure.

[0076] Preferably, step S4 comprises:

[0077] Step S41, input the maximum allowable cable diameter of the working environment, generate the recommended process parameters of the cable according to the preliminary cable structure, the maximum allowable cable diameter of the working environment and the minimum thickness of the aluminum sheath, and directly output an error instruction if the recommended process parameters of the cable cannot be generated;

[0078] Step S42, adapting the preliminary cable structure to the existing cable models, when there is an existing cable model that meets the screening conditions, all existing cable models that meet the screening conditions are screened out as the first screening models, and when there is no existing cable model that meets the screening conditions, the recommended process parameters of the cable are directly output;

[0079] Step S43, determining whether the actual aluminum sheath thickness of the first screening model is greater than the minimum thickness of the aluminum sheath, screening out all models in the first screening model that meet the requirement that the actual aluminum sheath thickness is greater than the minimum thickness of the aluminum sheath as the second screening model, and directly outputting the recommended process parameters of the cable when the second screening model does not exist;

[0080] Step S44, determine whether the actual outer diameter of the second screening model is smaller than the maximum allowable cable diameter of the working environment, screen out all models in the second screening model that meet the requirement that the actual outer diameter is less than or equal to the maximum allowable cable diameter of the working environment for output; if the actual outer diameters of all models in the second screening model are larger than the maximum allowable cable diameter of the working environment, output the recommended process parameters of the cable.

[0081] In this embodiment, verifying data integrity refers to verifying whether the input amount of data meets the minimum data requirement for smooth aluminum cable auxiliary selection.

[0082] In this embodiment, the environmental parameters of the cable use site include: temperature, humidity, chemical environment (whether there are corrosive gases or corrosive chemicals in the working environment of the cable), mechanical stress environment (whether the cable is under high mechanical stress when working), radiation environment (whether the cable is exposed to high-intensity radiation when working), working altitude, and whether it is a special environment (ocean, mine).

[0083] In this embodiment, the usage requirements of the cable include: transmission voltage intensity, transmission current size, and transmission distance.

[0084] In this embodiment, the existing cable model information is regularly updated manually by staff.

[0085] In this embodiment, the cable structure includes: a conductor, an insulating layer, a shielding layer and a protective layer.

[0086] In this embodiment, the preliminary cable structure includes a conductor diameter range, an insulation layer thickness range, an insulation layer material range, a protective layer material and a protective layer thickness range.

[0087] In this embodiment, the material requirements of the cable include: temperature adaptability of the material, moisture resistance of the material, corrosion resistance of the material, radiation protection performance of the material, pressure resistance of the material, impact resistance of the material, and wear resistance of the material.

[0088] In this embodiment, the recommended process parameters include the size of each structure of the cable and the material of each structure of the cable.

[0089] In this embodiment, the error reporting instruction means that a cable that meets the use requirements cannot be generated based on the input data (the minimum size of the generated cable is larger than the maximum allowable cable diameter of the working environment).

[0090] The beneficial effects of the above technical solution are:

[0091] When selecting cables, first collect the environmental parameters and usage requirements of the cable use site, and verify the integrity of the data to ensure the accuracy of the preliminary cable structure obtained based on the input data. After obtaining the preliminary cable structure and the minimum thickness of the aluminum sheath, adapt it to the existing cable models, and then screen it through the maximum allowable cable diameter of the working environment to determine whether there are existing cable models that meet the conditions, thereby obtaining the cable selection result. If there are no existing cable models that meet the conditions, guide the subsequent customized production of cables by outputting recommended process parameters.

[0092] By collecting existing cable models in advance, a lot of data query time is saved, and there is no need to collect data separately every time a cable is selected. When selecting cables, they are matched with existing cable models to determine whether there are existing cable models that meet the use requirements, which greatly improves the efficiency of cable selection. By regularly updating existing cable data, the accuracy and comprehensiveness of existing cable data are ensured, avoiding the occurrence of missed and wrong selections, and improving the accuracy of cable selection results.

[0093] Example 2

[0094] Based on Example 1, step S41 includes:

[0095] Step S411, determining whether the recommended process parameters of the cable can be generated, and if it is determined that the recommended process parameters of the cable cannot be generated, directly outputting an error reporting instruction;

[0096] Step S412, generating a first process parameter and a second process parameter;

[0097] Step S413, verifying whether the second process parameters meet the use standard, and outputting the recommended process parameters of the cable based on the verification result.

[0098] Preferably, step S411 determines whether the recommended process parameters of the cable can be generated based on the following formula;

[0099]

[0100] Among them, P 1 is the first judgment parameter; D max The maximum allowable cable diameter in the working environment; I 1 The maximum working current designed for the cable; K C is the current carrying coefficient of the cable; δ is the conductivity of the cable conductor material; U 1 The maximum working voltage designed for the cable; E i is the electric field strength that the i-th insulating material bears per unit thickness; ε i is the relative dielectric constant of the i-th insulating material; σ C is the ambient temperature influence coefficient; σ S is the influence coefficient of environmental humidity; min is the minimum value function; V is the minimum thickness of the aluminum sheath; L 0 is the unit cable length;

[0101] When P 1 If it is greater than or equal to 0, it is determined that the recommended process parameters for generating cables are suitable. 1 If it is less than 0, it is judged that the recommended process parameters of the cable cannot be generated, and the control directly outputs an error instruction.

[0102] Preferably, the first process parameters include:

[0103] First conductor radius:

[0104] Thickness of the first insulation layer:

[0105] Thickness of the first protective layer:

[0106] Among them, R 1 is the radius of the first conductor; H 1 is the thickness of the first insulating layer; D 1 is the thickness of the first protective layer; I 1 The maximum working current designed for the cable; K C is the current carrying coefficient of the cable; δ is the conductivity of the cable conductor material; U 1 The maximum working voltage designed for the cable; E i is the electric field strength that the i-th insulating material bears per unit thickness; ε i is the relative dielectric constant of the i-th insulating material; σ C is the ambient temperature influence coefficient; σ S is the environmental humidity influence coefficient; L 0 is the unit cable length; min is the minimum function.

[0107] Preferably, the second process parameters include:

[0108] Second conductor radius:

[0109] Among them, R 2 is the radius of the second conductor; I 1 The maximum working current designed for the cable; K C is the current carrying coefficient of the cable; δ is the conductivity of the cable conductor material; U 1 The maximum working voltage designed for the cable; L 0 is the unit cable length;

[0110] The method for determining the thickness of the second insulating layer is:

[0111] Step S4121, determine The corresponding insulation material type;

[0112] Among them, min is the minimum function; F i is the cost per unit volume of the i-th insulating material; π is the circumference of a circle; I 1 The maximum working current designed for the cable; K C is the current carrying coefficient of the cable; δ is the conductivity of the cable conductor material; U 1 The maximum working voltage designed for the cable; E iis the electric field strength that the i-th insulating material bears per unit thickness; ε i is the relative dielectric constant of the i-th insulating material; L 0 is the unit cable length;

[0113] Step S4122, determine the thickness of the second insulating layer to be

[0114] Among them, H 2 is the thickness of the second insulating layer; U 1 The maximum working voltage designed for the cable; ε s is the relative dielectric constant of the insulating material determined in step S01; E s The electric field strength that the insulating material is subjected to per unit thickness determined in step S4121;

[0115] Second protective layer thickness:

[0116] Among them, D 2 is the thickness of the second protective layer; ln is the logarithmic function with e as the base; e is the natural base; M is the total number of physical properties of the cable; θ j is the influence coefficient of the jth physical property; τ j is the judgment parameter of the jth physical property. When the cable needs to have the jth physical property, τ j The value is 1. When the cable does not need to have the jth physical property, τ j The value is 0; N is the total number of types of protective layer materials; F b is the cost per unit volume of the b-th protective layer material; F 0 is the cost per unit volume of the protective layer material currently used; C is the ambient temperature influence coefficient; σ S is the environmental humidity influence coefficient.

[0117] Preferably, step S413 includes:

[0118] Step S4131, verifying whether the second process parameter meets the use standard;

[0119] P 2 =D max -2(R 2 +H 2 +D 2 +V);

[0120] Among them, P 2 is the second judgment parameter; D max R is the maximum allowable cable diameter in the working environment; 2 is the radius of the second conductor; H 2is the thickness of the second insulating layer; D 2 is the thickness of the second protective layer; V is the minimum thickness of the aluminum sheath;

[0121] When P 2 is greater than or equal to 0, the second process parameter meets the use standard; when P 2 If it is less than 0, the second process parameter does not meet the use standard;

[0122] Step S4132: when the second process parameter meets the use standard, the recommended process parameter is generated based on the second process parameter and its corresponding material; when the second process parameter does not meet the use standard, the recommended process parameter is generated based on the first process parameter and its corresponding material.

[0123] In this embodiment, the physical properties of the cable include: high temperature resistance, low temperature resistance, corrosion resistance, pressure resistance, and radiation resistance.

[0124] The beneficial effects of the above technical solution are:

[0125] When formulating the recommended process parameters of the cable, firstly, the first process parameters are used to determine whether the overall size of the cable meets the maximum allowable cable diameter of the working environment when the structure of each part of the cable is of the minimum size, so as to complete the determination of whether the recommended process parameters can be generated. When it is determined that the recommended process parameters cannot be generated, it means that the maximum allowable cable diameter of the working environment and the use requirements of the cable cannot be met at the same time, and then an error instruction is directly output to avoid waste of computing power. When it is determined that the recommended process parameters can be generated, the second process parameters are generated under the condition of considering the durability and economy of the cable. After the second process parameters are generated, it is determined whether the second process parameters meet the maximum allowable cable diameter of the working environment, so as to determine whether the cable produced according to the second process parameters can be used in the production environment. If the second process parameters can be used in the production environment, the recommended process parameters are generated based on the second process parameters. If the second process parameters cannot be used in the production environment, the recommended process parameters are generated based on the first process parameters, thereby ensuring that the recommended process parameters have the best durability and economy.

[0126] When generating the second process parameters, when determining the thickness of the second insulating layer, The production cost of the insulation layer of a unit length of cable produced using different insulation materials is calculated, so that the material with the lowest cost can be selected for the production of the insulation layer while ensuring the same insulation performance of the insulation layer. The thickness of the second insulation layer is determined based on the selected material, thereby reducing the production cost of the cable. When determining the thickness of the protective layer, each physical property required by the cable is considered based on The thickness of the second protective layer is modified to a certain extent, thereby improving the durability of the cable. The thickness of the second protective layer is modified to a certain extent from the perspective of the production cost of the protective layer, thereby ensuring that the cable produced based on the second process parameters has high durability and controllable production costs.

[0127] Example 3

[0128] The embodiment of the present invention further provides a smooth aluminum cable auxiliary selection device, which is applied to a smooth aluminum cable auxiliary selection method as described in embodiment 1 or embodiment 2, comprising:

[0129] An information storage module, used to store material requirements corresponding to various environmental parameters, characteristics of various cable structures, available thickness ranges of various cable structures, and material characteristics of commonly used materials;

[0130] Input and output module, used for data input and output;

[0131] Structural calculation module, used to generate preliminary cable structure, calculate the minimum thickness of aluminum sheath and formulate recommended process parameters of cable;

[0132] The adaptation module is used to adapt the calculation results of the structural calculation module to the existing cable model and output the adaptation results.

[0133] Preferably, the structure calculation module includes:

[0134] A material determination unit is used to determine the material requirements of each part of the cable according to the environmental parameters, and based on the material requirements, select the available materials corresponding to each part of the cable;

[0135] A sizing unit, for calculating the corresponding available size range of each part of the cable based on the corresponding available materials of each part of the cable, and generating a preliminary cable structure and a minimum thickness of the aluminum sheath;

[0136] The process parameter formulation unit is used to generate the recommended process parameters of the cable based on the preliminary cable structure, the minimum thickness of the aluminum sheath and the maximum allowable cable diameter of the working environment.

[0137] In this embodiment, the cable produced according to the recommended process parameters of the cable meets the requirements of the preliminary cable structure and the minimum thickness of the aluminum sheath, and the overall size of the cable is smaller than the maximum allowable cable diameter of the working environment.

[0138] In this embodiment, the information stored in the information storage module is manually updated regularly by staff.

[0139] In this embodiment, the material properties include: temperature adaptability of the material, moisture resistance of the material, corrosion resistance of the material, radiation protection performance of the material, pressure resistance of the material, impact resistance of the material, and wear resistance of the material.

[0140] The beneficial effects of the above technical solution are:

[0141] By generating a preliminary cable structure and calculating the minimum thickness of the aluminum sheath, accurate adaptation conditions can be obtained. When adapting to existing cable models, they can be directly screened by the adaptation conditions, thereby reducing the logical complexity of the adaptation process and improving the efficiency of cable auxiliary selection.

[0142] When generating the preliminary cable structure, the materials are first limited by environmental parameters and some unusable materials are removed, which reduces the amount of calculations in the subsequent size determination and improves the calculation efficiency.

[0143] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A smooth aluminum cable auxiliary selection method, characterized in that: include: Step S1, collecting environmental parameters and usage requirements of the cable usage site, inputting the environmental parameters and usage requirements into the cable auxiliary selection device and verifying data integrity; Step S2, determining the material requirements of each part of the cable structure according to the environmental parameters of the cable use site, and establishing a preliminary cable structure according to the material requirements and the cable use requirements; Step S3, calculating the minimum thickness of the aluminum sheath based on the short-circuit current requirement; Step S4, input the maximum allowable cable diameter of the working environment, formulate recommended process parameters, adapt the existing cable models based on the preliminary cable structure and the minimum thickness of the aluminum sheath, and determine whether there is an existing cable model that meets the conditions. If there is an existing cable model that meets the conditions, output all existing cable models and their specifications that meet the conditions. If there is no existing cable model that meets the conditions, output the recommended process parameters of the cable.

2. A smooth aluminum cable auxiliary selection method according to claim 1, characterized in that: Step S2 includes: Step S21, determining the material requirements of each part of the cable structure according to the environmental parameters of the cable use site; Step S22, determining the materials applicable to the structures of the various parts of the cable according to the material requirements of the various parts of the cable; Step S23, determining the applicable thickness range of each part of the cable structure according to the use requirements of the cable; Step S24, combining the applicable materials and applicable thickness ranges of the various parts of the cable structure to obtain a preliminary cable structure.

3. A smooth aluminum cable auxiliary selection method according to claim 2, characterized in that: Step S4 includes: Step S41, input the maximum allowable cable diameter of the working environment, generate the recommended process parameters of the cable according to the preliminary cable structure, the maximum allowable cable diameter of the working environment and the minimum thickness of the aluminum sheath, and directly output an error instruction if the recommended process parameters of the cable cannot be generated; Step S42, adapting the preliminary cable structure to the existing cable models, when there is an existing cable model that meets the screening conditions, all existing cable models that meet the screening conditions are screened out as the first screening models, and when there is no existing cable model that meets the screening conditions, the recommended process parameters of the cable are directly output; Step S43, determining whether the actual aluminum sheath thickness of the first screening model is greater than the minimum thickness of the aluminum sheath, screening out all models in the first screening model that meet the requirement that the actual aluminum sheath thickness is greater than the minimum thickness of the aluminum sheath as the second screening model, and directly outputting the recommended process parameters of the cable when the second screening model does not exist; Step S44, determine whether the actual outer diameter of the second screening model is smaller than the maximum allowable cable diameter of the working environment, screen out all models in the second screening model that meet the requirement that the actual outer diameter is less than or equal to the maximum allowable cable diameter of the working environment for output; if the actual outer diameters of all models in the second screening model are larger than the maximum allowable cable diameter of the working environment, output the recommended process parameters of the cable.

4. A smooth aluminum cable auxiliary selection method according to claim 3, characterized in that: Step S41 includes: Step S411, determining whether the recommended process parameters of the cable can be generated, and if it is determined that the recommended process parameters of the cable cannot be generated, directly outputting an error reporting instruction; Step S412, generating a first process parameter and a second process parameter; Step S413, verifying whether the second process parameters meet the use standard, and outputting the recommended process parameters of the cable based on the verification result.

5. A smooth aluminum cable auxiliary selection method according to claim 4, characterized in that: Step S411 determines whether the recommended process parameters of the cable can be generated based on the following formula; Among them, P1 is the first judgment parameter; D max is the maximum allowable cable diameter in the working environment; I1 is the maximum working current designed for the cable; K C is the current-carrying coefficient of the cable; δ is the conductivity of the cable conductor material; U1 is the maximum working voltage designed for the cable; E i is the electric field strength that the i-th insulating material bears per unit thickness; ε i is the relative dielectric constant of the i-th insulating material; σ C is the ambient temperature influence coefficient; σ S is the influence coefficient of environmental humidity; min is the minimum value function; V is the minimum thickness of the aluminum sheath; L0 is the unit cable length; When P1 is greater than or equal to 0, it is determined that the recommended process parameters of the cable can be generated. When P1 is less than 0, it is determined that the recommended process parameters of the cable cannot be generated, and the control directly outputs an error instruction.

6. A smooth aluminum cable auxiliary selection method according to claim 4, characterized in that: The first process parameters include: First conductor radius: Thickness of the first insulation layer: Thickness of the first protective layer: Where R1 is the radius of the first conductor; H1 is the thickness of the first insulation layer; D1 is the thickness of the first protective layer; I1 is the maximum working current designed for the cable; K C is the current-carrying coefficient of the cable; δ is the conductivity of the cable conductor material; U1 is the maximum working voltage designed for the cable; E i is the electric field strength that the i-th insulating material bears per unit thickness; ε i is the relative dielectric constant of the i-th insulating material; σ C is the ambient temperature influence coefficient; σ S is the environmental humidity influence coefficient; L0 is the unit cable length; min is the minimum value function.

7. A smooth aluminum cable auxiliary selection method according to claim 4, characterized in that: The second process parameters include: Second conductor radius: Where R2 is the radius of the second conductor; I1 is the maximum working current designed for the cable; K C is the current-carrying coefficient of the cable; δ is the conductivity of the cable conductor material; U1 is the maximum working voltage designed for the cable; L0 is the unit cable length; The method for determining the thickness of the second insulating layer is: Step S4121, determine The corresponding insulation material type; Among them, min is the minimum function; F i is the cost per unit volume of the i-th insulating material; π is the circumference of a circle; I1 is the maximum working current designed for the cable; K C is the current-carrying coefficient of the cable; δ is the conductivity of the cable conductor material; U1 is the maximum working voltage designed for the cable; E i is the electric field strength that the i-th insulating material bears per unit thickness; ε i is the relative dielectric constant of the i-th insulating material; L0 is the unit cable length; Step S4122, determine the thickness of the second insulating layer to be Among them, H2 is the thickness of the second insulation layer; U1 is the maximum working voltage designed for the cable; ε s is the relative dielectric constant of the insulating material determined in step S01; E s The electric field strength that the insulating material is subjected to per unit thickness determined in step S4121; Second protective layer thickness: Where D2 is the thickness of the second protective layer; ln is the logarithmic function with e as the base; e is the natural base; M is the total number of physical properties of the cable; θ j is the influence coefficient of the jth physical property; τ j is the judgment parameter of the jth physical property. When the cable needs to have the jth physical property, τ j The value is 1. When the cable does not need to have the jth physical property, τ j The value is 0; N is the total number of types of protective layer materials; F b is the unit volume cost of the b-th protective layer material; F0 is the unit volume cost of the currently used protective layer material; σ C is the ambient temperature influence coefficient; σ S is the environmental humidity influence coefficient.

8. A smooth aluminum cable auxiliary selection method according to claim 7, characterized in that: Step S413 includes: Step S4131, verifying whether the second process parameter meets the use standard; <h2 style=";text-align:left;direction:ltr">P2=D<h2 style=";text-align:left;direction:ltr"> max <h2 style=";text-align:left;direction:ltr"> -2(R2+H2+D2+V); Wherein, P2 is the second judgment parameter; D max is the maximum allowable cable diameter in the working environment; R2 is the radius of the second conductor; H2 is the thickness of the second insulation layer; D2 is the thickness of the second protective layer; V is the minimum thickness of the aluminum sheath; When P2 is greater than or equal to 0, the second process parameter meets the use standard; when P2 is less than 0, the second process parameter does not meet the use standard; Step S4132: when the second process parameter meets the use standard, the recommended process parameter is generated based on the second process parameter and its corresponding material; when the second process parameter does not meet the use standard, the recommended process parameter is generated based on the first process parameter and its corresponding material.

9. A smooth aluminum cable auxiliary selection device, applied to a smooth aluminum cable auxiliary selection method as claimed in any one of claims 1 to 8, characterized in that: include: An information storage module, used to store material requirements corresponding to various environmental parameters, characteristics of various cable structures, available thickness ranges of various cable structures, and material characteristics of commonly used materials; Input and output module, used for data input and output; Structural calculation module, used to generate preliminary cable structure, calculate the minimum thickness of aluminum sheath and formulate recommended process parameters of cable; The adaptation module is used to adapt the calculation results of the structural calculation module to the existing cable model and output the adaptation results.

10. A smooth aluminum cable auxiliary selection device according to claim 9, characterized in that: The structural calculation module includes: A material determination unit is used to determine the material requirements of each part of the cable according to the environmental parameters, and based on the material requirements, select the available materials corresponding to each part of the cable; A sizing unit, for calculating the corresponding available size range of each part of the cable based on the corresponding available materials of each part of the cable, and generating a preliminary cable structure and a minimum thickness of the aluminum sheath; The process parameter formulation unit is used to generate the recommended process parameters of the cable based on the preliminary cable structure, the minimum thickness of the aluminum sheath and the maximum allowable cable diameter of the working environment.

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