汽輪發(fā)電機基礎的計算分析與設計
[Abstract]:Steam turbine, generator is the most important equipment in thermal power plant, can be called the heart of power plant. Correct and reasonable design of turbogenerator foundation is the key of power plant design. Because the design of turbogenerator foundation is very demanding to the designers, the general designers in the design institute do not have the opportunity to contact the design of the turbogenerator foundation. Even in large Grade A electric power design institutes, the number of people who specialize in the design of turbo-generator foundations is very small, and there are some misunderstandings of the understanding of turbo-generator foundations among many principal designers in small and medium-sized electric power design institutes. Such as relying on the past design experience, design is too conservative, weak theoretical foundation, no software operation and so on. Most designers are eager to have a book that instinctively applies directly to the design, namely, the basic calculation theory of the turbine, the specifications to be followed in the design, and the design steps. The operation of computing software is more systematic and can guide the design of general designers. At present, there is not a book of this kind on the market. Basically, it is almost impossible for designers to complete the design of turbogenerator foundation independently without the special training of teachers. In this paper, the development history, calculation principle and calculation requirements of turbogenerator foundation are briefly described, the design method and process of turbogenerator foundation are introduced emphatically, and the design examples of concrete project are given. Finally, various design software are analyzed and compared, which can effectively optimize the design of turbogenerator foundation. This paper is of great significance to the general designers or the designers who are not familiar with the foundation of the turbogenerator in the actual design, so that it can be used quickly in the design of the turbogenerator foundation in a short time. And is advantageous to the designer's optimization design. The foundation of turbogenerator is usually frame foundation, which includes static calculation, dynamic calculation, construction and reinforcement. The main contents of static calculation include checking calculation of foundation strength, checking calculation of unit eccentricity value, strength calculation, simplified calculation of dynamic load according to static load equivalent, temperature stress, seismic effect, calculation of internal force of component, etc. Dynamic calculation is a difficult point in the design. At present, the main basis of the design of each design institute is the Design Code for Power Machine Foundation (GB50040-96). The commonly used assistant calculation software is TGFP,ANSYS,SAP2000, Staad and so on. At present, all kinds of computing software have their own advantages and disadvantages, and their calculation results are slightly different. Through the comparison of various calculation methods, this paper thinks that the simplified calculation method stipulated in the code has been rarely applied, and should be considered according to the degree of freedom in many spaces. The calculation results of < TGFP > software are intuitionistic and clear, easy to use, and suitable for the design of drawings. Other finite element software is more suitable for dynamic analysis of foundation. If conditions permit, there should be more software analysis and comparison, and no superstitious software should be used in the design, so as to deal with the rational analysis of the results of the calculation software and to control all kinds of indexes strictly according to the specifications, at the same time, More attention should be paid to optimal design. The drawings drawn by different designers with the same calculation results may vary greatly. The optimum design of steel bar configuration, construction requirements and drawing depth should be paid more attention to when drawing drawings.
【學位授予單位】:山東大學
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:TM311;TU476.1
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