Tail-stage movable blade body structure for half-rotating-speed nuclear turbine

Abstract

The invention discloses a tail-stage movable blade body structure for a half-rotating-speed nuclear turbine. A blade body is formed by laminating multiple characteristic sections according to a specific rule. Each characteristic section has the characteristic parameters of an installation angle c1, the chord length b1, the maximum thickness w1, the axial width Xa and the sectional area A. The laminating rule is that the sections are gradually reduced in a continuously and smoothly transitional manner in the blade height direction from the root end to the top end, the relative value of the blade height H is monotonically increased to 1.0 from 0.0 correspondingly, the absolute values of the installation angles c1 are reduced to 10.7 degrees from 81 degrees, the relative values of the chord lengths b1 from the root section to the top section are monotonically reduced to 1.0 from 1.76, the relative values of the maximum thicknesses w1 from the root section to the top section are monotonically reduced to 1.0 from 5.43, the relative values of the axial widths Xa from the root section to the top section are monotonically reduced to 1.0 from 8.86, and the relative values of the sectional area A from the root section to the top section are monotonically reduced to 1.0 from 8.7.

Description

technical field [0001] The invention relates to a final-stage moving blade of a steam turbine, in particular to a blade body structure of a final-stage moving blade for a half-speed nuclear power steam turbine. Background technique [0002] As one of the clean energy sources, nuclear power has the characteristics of stably producing a large amount of electricity. It effectively addresses a series of environmental issues such as energy depletion, the global warming effect, and control of carbon dioxide emissions. [0003] In recent years, actively promoting the construction of nuclear power has become an important strategy in my country. It is necessary to meet the growing energy demand of economic and social development, ensure energy supply and safety, protect the environment, achieve my country's greenhouse gas control goals, and achieve the optimization and sustainability of the power industry structure. It is of great significance to continue to develop and enhance my cou...

AI Technical Summary

Problems solved by technology

However, these last-stage moving blades cannot match the design requirements of my country's mainstream nuclear power steam turbines, especially the above-mentioned three types of steam turbines, resulting in relatively low work efficiency and low cost performance of the steam turbines. This has made my country's nuclear power mainstream in the fierce market competition. Steam turbines are at a competitive disadvantage, which affects the pace of vigorous development and promotion, and is not conducive to going abroad

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