Design And Development Of Steam Tubes Heated Rotary Dryer CAD System

As a new dry equipment, The steam tubes heated rotary Dryer is widely used inchemical industry, medicine, petrochemical industry, food, timber and so on. So the researchand development of dryers has being paid more and more attention. At present, the designmethod and design standard are not completely formed about steam tubes heated rotarydryer in our country. In addition, the traditional design method of steam tubes heated rotarydryer can not meet design requirements because its design method adopts manual calculationand drawing. So it has important significance for engineering application that a new designand calculation method of the steam tubes heated rotary dryer was proposed and the designsoftware system which can realize the functions of the technological design calculation,CAD parametric drawing was developed.In this dissertation, a new design and calculation method of steam tubes heated rotarydryer was proposed and the CAD design system with technological design calculation andparametric drawing was developed for steam tubes heated rotary dryer. Major researchresults are as follows:(1) Based on traditional design way of steam tubes heated rotary dryer and rotary kilndryer, the sectional type design method of the rotary kiln dryer is used in the design processof steam tubes heated rotary dryer, and a new sectional type design method which dividesthe design of steam tubes heated rotary dryer into three section: preheat section, evaporatorsection, warming section is proposed.(2) Based on the principle of Object-Oriented software and modularized program, thedesign proposal of the CAD system of steam tubes heated rotary dryer includingtechnological design calculation subsystem, parameter database subsystem, parametricdrawing subsystem and results export subsystem was brought forward.(3) Based on the heat and mass transfer mechanism and the sectional design way ofsteam tubes heated rotary dryer, the technological design subsystem which could realizes theautomatic calculation of thermodynamic parameters was developed. In addition, the resultswere agree by contrasting the traditionally integrated calculation method and the newsectional calculation method.(4) Using AutoCAD2007as platform and based on the computing results ofthermodynamic parameters, the CAD parametric drawing was achieved, which couldrealizes the function of automatic drawing arranging tubes map of steam tubes heated rotarydryer. （5）The CAD system of steam tubes heated rotary dryer was used in projects, althoughthere is some error, which is within the acceptable range,indicating the feasibility of thesystem.With the characteristics of friendly man-machine interface, applicability etc, thesoftware enhances the design precision, shortens the development cycle, increases the energyefficiency, and has reference value for designing and developing related system.