汽轮机课程设计-B.5-3.430.981型汽轮机设计.docxVIP

汽轮机课程设计-- PAGE \* MERGEFORMAT I-摘 要汽轮机是将蒸汽的能量转换成为 HYPERLINK /view/1641349.htm \t /_blank 机械功的旋转式动力机械。汽轮机在设计参数下运行称为汽轮机的设计工况。由于汽轮机的主要尺寸基本上是按设计工况要求确定的，而汽轮机功率在运行时将根据外界的需要而变化，汽机参数均有可能变化，从而引起蒸汽流量、各级参数和效率的变化，称为汽轮机的变工况。为了估计汽轮机在新工况下运行的经济性，可靠性与安全性，有必要对新工况进行热力核算。为了更好的适应社会发展加深大学生的研发技能及拓展大学生的理性思维，因此我们进行了2.5MW汽轮机的课程设计。核算项目有：动叶前后参数、级效率、级功率、反动度、速度比、漏汽量等。这次课程设计给了我们锻炼自我能力和巩固知识的机会，为今后更好的对汽轮机设计打下了坚实的基础。关键词：汽轮机；设计；流量；核算B2.5-3.43/0.981型汽轮机设计- PAGE \* MERGEFORMAT - PAGE \* MERGEFORMAT II- PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT IAbstractSteam turbine is the energy conversion of steam into mechanical power of the rotary type power machinery. The design condition of steam turbine under design parameters is called steam turbine. Due to the main dimensions of the steam turbine is basically according to the design requirements identified, and power of steam turbine at run time will be according to the need of external changes, turbine parameters have may change, causing steam flow rate, at all levels and efficiency of the parameter changes, called the change condition of the turbine. In order to estimate the economy, reliability and safety of steam turbine running under new conditions, it is necessary to calculate the new operating conditions.In order to better adapt to the social development of College Students research and development skills and expand the rational thinking, so we carried out the curriculum design of 2.5MW turbine. Accounting items are: the parameters of the front and rear of the blade, the level of efficiency, the level of power, the reaction rate, the speed ratio, the amount of leakage, etc.. This curriculum design gives us the opportunity to exercise the ability of self and the consolidation of knowledge, for the future to better lay a solid foundation for the design of the steam turbine.Key words: steam turbine; design; flow; calculation- PAGE \* MERGEFORMAT - PAGE \* MERGEFORMAT III-目 录TOC \o 1-3 \h \u HYPERLINK \l _Toc23747 摘 要 PAGEREF _Toc23747 I HY