Based On The Finite Element Analysis Of The Wast Heat Generator A Structure Optimization Design

In order to deal with the world energy situation and environment change, on the one hand, we encourage new and renewable energy development; On the other hand, we promoting new energy-saving technology, reduce energy consumption, improving energy efficiency. Cement industry is large energy consumption, with a great potential of energy conservation, the circulation economic mode, improve cement industry energy efficiency, promote waste heat power generation technology is a very important and effective method. In the process of using cement production waste gas generator for construction waste heat from waste heat, already can recycling waste heat, for power generation, can decrease again waste gas, waste heat, dust pollution to the environment.Energy equipment is the development of new energy development and improving energy efficiency of the foundation and carrier, is promote energy science and technology progress, build a safe, efficient and clean energy of the system, the key is to promote the sustainable and healthy development of the energy industry the effective guarantee. Waste heat recovery of waste heat generator is an important part of the system, this paper standby generator optimized analysis to ensure generator in smooth and reliable operation, the structure of a smaller size and weight, to save material, at the same time, improve the stress distribution of the base.This article mainly and results are as follows:1.based on finite element method of modeling theory, according to the drawing, the waste heat to12MW generator engine with a full-scale model, through the solid models of simple structure, rational selection of unit types, a finite element model of the stator frame.2. the finite element model of the base of the static strength analysis and free modal analysis, found the original structure strength enough, stator frame away from natural frequency generator frequency100HZ, won’t produce resonance, but the maximum stress stator frame is far less than the allowable stress, optimizing the structure of the may exist.3. the use of genetic algorithm, the principle, design scheme optimization parameters of the code, and the formation of individual initial design scheme based on the population and the population individual fitness Nastran calculation, through the competition optimal reserves, copy, crossover and mutation methods, is to optimize the design scheme of the stator frame.4. the optimization design of the stator frame of the check, through the optimization of the static strength before and after analysis comparison, free modal analysis comparison and hoisting stress analysis is that the parameters of the generator with the design standards, under the condition of the stress distribution after optimization engine is improved, the size of the stator frame is reduced, about saving12%of the material. To verify the accuracy of the structure optimization design, also proved the accuracy of the method is studied in this paper.Therefore, this paper standby generator for waste heat analysis and independent design provides scientific basis for optimizing the problem of waste heat generator seat has important theoretical and practical application value. In improving the waste heat power generation equipment technology level, reduce the waste heat recovery of cost and improve the recovery of the technology market competitive power, and achieve with independent intellectual property rights of the localization of waste heat generating set a solid foundation.