| Orbal oxidation ditch as a new kind of technology with nitrogen and phosphorus removal,which has a great advantage on economic and technical,and has a widely promotion in the domestic sewage treatment plants.AutoCAD as general computer-aided design software,it has a strong function in terms of design.When the actual drawing process,AutoCAD software still has some problems,which can not be large-scale computing,and parameters can not be achieved,intelligent drawing.In the current design phase of Orbal oxidation ditch,designers still need to spend a lot time to manually look-up table,calculation and drawing.To solve this problem,the subject is on the AutoCAD for secondary development,studied system software that Orbal oxidation ditch parametric design and drafting,which can improve work efficiency,and improve design accuracy.The subject describes the basic principles of Orbal oxidation ditch,and has a standardized design for its design and calculates content.In "outdoor drainage design specifications" GB 50014-2006(2014)as the design basis for Orbal oxidation ditch design was standardized.SRT(Sludge Retention Time)chose as design control parameters,select sludge load,hydraulic residence time and unit of oxygen consumption as supplementary design parameters.According to the scope of the "norms" of parameters as basis of design parameter selection,and according to the formula of the "norm" establish Orbal oxidation ditch parametric design model.This subject is based on AutoCAD2008 for the development environment,in ActiveX Automation for development technology,and in VBA language for development tools,it is the first time research and develop the parametric drawing software design system about Orbal oxidation ditch with design calculation function and drawing function in one.Contents of the system involved mainly include the following two aspects:On the one hand is the calculation part of Orbal oxidation ditch,that after entering the original design parameters and design data,the program will calculate each part size of Orbal oxidation ditch;On the other hand is the draw part of Orbal oxidation ditch,that depending on the size calculate the results,conduct parametric drawing for Orbal oxidation ditch.The structure of mapping system includes the following aspects:design of forms interface,size calculation module,parametric drawing module,the block module and some auxiliary modules.The way of between the various functional modules adopt code will link up the interface together,achieve the transmission between modules and the interactive between users.About Orbal through some oxidation ditch design engineering drawing examples of Orbal oxidation ditch standardized design.Multiple form interface design,human-computer interaction as an interface,you can achieve the original design input data,design parameters,and can display the size of each part Orbal oxidation ditch after calculation,the results can also be checked,and information tips,to complete the selection and the proportion of drawing commands.Compiled a plurality of Orbal oxidation ditch calculation module,parametric drawing module and drawing aids module.Preparation of these forms of design and modules by completing the Orbal oxidation ditch parametric drawing work.If users need to output graphics to make changes,only need to design a form you can directly modify the original input data,the program can be rerun.After repeated research and testing,we can draw Orbal oxidation ditch parametric design drawing system is very practical,designed to meet the general needs. |
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