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首页> 外文会议>International conference on nuclear engineering;ASME power conference >DEVELOPMENT OF LONG ROTATING BLADE APPLIED IN THE NEW GENERATION NUCLEAR STEAM TURBINE
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DEVELOPMENT OF LONG ROTATING BLADE APPLIED IN THE NEW GENERATION NUCLEAR STEAM TURBINE

机译：新型核电汽轮机长旋转叶片的研制

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In order to meet the high economic requirement of the 3rd generation Pressurized Water Reactor (PWR) or Boiling Water Reactor (BWR) applied in currently developing nuclear power plants, a series of half-speed extra-long last stage rotating blades with 26 ~ 30 m~2 nominal exhaust annular area is proposed, which covers a blade-height range from 1600 mm to 1900 mm. It is well known that developing an extra long blade is a tough job involving some special coordinated sub-process. This paper is dedicated to describe the progress of creating a long rotating blade for a large scaled steam turbine involved in the 3rd generation nuclear power project. At first the strategy of how to determine the appropriate height for the last-stage-rotating-blade for the steam turbine is provided. Then the quasi-3D flow field quick design method for the last three stages in LP casing is discussed as well as the airfoil optimization method. Furthermore a sophisticated blade structure design and analyzing system for a long blade is introduced to obtain the detail dimension of the blade focusing on the good reliability during the service period. Thus, except for CAD and experiment process, the whole pre-design phase of the extra-long turbine blade is presented which is regarded as an assurance of the operation efficiency and reliability.
机译：为了满足目前正在发展中的核电站中使用的第三代压水堆（PWR）或沸水堆（BWR）的高经济要求，一系列带有26〜30的半速超长末级旋转叶片提出了m〜2的标称排气环形面积，其覆盖的叶片高度范围为1600 mm至1900 mm。众所周知，开发超长刀片是一项艰巨的工作，涉及一些特殊的协调子过程。本文致力于描述为第三代核电项目所涉及的大型蒸汽轮机制造长旋转叶片的过程。首先，提供了如何为蒸汽轮机的最后一级旋转叶片确定合适高度的策略。然后讨论了LP套管最后三个阶段的准3D流场快速设计方法以及翼型优化方法。此外，引入了用于长叶片的复杂叶片结构设计和分析系统，以获得叶片的详细尺寸，重点是在使用期间的良好可靠性。因此，除了CAD和实验过程外，还介绍了超长涡轮叶片的整个预设计阶段，这被认为是操作效率和可靠性的保证。

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