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Research on the Thermal and Intensity Calculation System of Impulse Industrial Turbine

Author: MengChunLin
Tutor: ShengDeRen；LiWei
School: Zhejiang University
Course: Thermal Power Engineering
Keywords: Industrial steam turbines Impulse Strength calculation Thermodynamic calculation Software Testing Modular
CLC: TK262
Type: Master's thesis
Year: 2008
Downloads: 269
Quote: 1
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Abstract

Industrial steam turbine is characterized by the diversification of functional requirements, non-standard design and manufacturing need to be based on the specific needs of the user. Industrial steam turbines impulse and reaction of the points, according to the working principle of the reactionary industrial steam turbine with a combination of the introduction of the static portion of the building blocks of technology and the flow passage CAD design technology, performance and quality of its products has reached the international advanced level; impulse industrial steam turbine for the manufacturers to design, no reaction turbine as tight series and modular design specifications, its designed thermal design program, reactionary as the degree of integration can not be achieved, there is a need to the excessive input parameters is not strong, versatile user interface unfriendly. In this paper, the principle of calculated the turbine thermal and strength these problems exist for the current impulse industrial steam turbine thermal calculation software, summary and research on the basis of the research and development of a convenient and fast heat and intensity of the impulse industrial steam turbine calculated computing systems, the main content of the system are as follows: (1) to study the heat and intensity of the impulse industrial steam turbine calculation algorithm. This paper focuses on analysis of the heating steam extraction unit thermal design of new models the segment design flow at all levels in the determination principle, and gives the calculation model; study the principles and advantages of the turbine variable conditions heat accounting in reverse chronological order hybrid algorithm , summed up the thermal accounting algorithm a supersonic-level variable conditions, combined with the improved algorithm, to improve the accuracy of the calculation, but also conducive to the convergence of the calculation procedure. (2) modular, object-oriented modeling method of impulse industrial steam turbine heat and intensity computing systems development. In this paper, the heat and intensity of the condensing steam, back pressure, condensate pumping and pumping back and so many different types of industrial steam turbine process characteristics analysis, computing systems modular decomposition, and then use the object-oriented C programming techniques preparation of program modules, and set up a module automatically connect composite systems, so that the computing system to meet a variety of different types of industrial steam turbine heat and intensity computing needs. (3) industrial turbine thermal calculations and part strength two functions integrated into the platform of a platform, part strength to provide a safe test new models of industrial steam turbine thermal design and in different work conditions. The same time, the strength calculation system can also be used as a stand-alone module, without thermal calculation unit can be part strength. (4) using the database calculations for unified management. The system the turbine flow part of the data, material properties data, calculation commonly used curves and charts are stored in the database source project Access database, a unified management. (5) the principle of object-oriented software testing methods, models, and under the guidance of the method, the calculation of system classes and methods tested class cluster testing and system testing different levels of testing. Finally, in the system test some application examples, test results show that the computing system to achieve the desired functional requirements.

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CLC: > Industrial Technology > Energy and Power Engineering > Steam Power Engineering > Steam turbine (steam turbine,steam turbine ) > Design, calculation
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