Steam turbine slim blade and moving blade assembly consisting of same
A technology of steam turbine and blade group, which is applied in the direction of supporting components of blades, machines/engines, mechanical equipment, etc., and can solve problems such as difficult installation of blades, restrictions on the production and application of steam turbines, and the inability of standard moving blades to be installed on the rotor through blade root slots, etc. Achieve the effects of improving flatness, overcoming difficulty in installation, and reducing air leakage in the stage
Pending Publication Date: 2019-11-15
CHINA CHANGJIANG ENERGY CORP GROUP
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Abstract
The invention relates to a steam turbine slim blade. The steam turbine slim blade comprises a blade body part, a blade root part, a surrounding belt and bosses, wherein the lower end of the blade bodypart is fixedly connected with the upper end of the blade root part, the surrounding belt is fixed at the upper end of the blade body part, the bosses are arranged at the upper end of the surroundingbelt at intervals, and the bosses are matched with steam sealing teeth; the blade root part is arranged to be a trapezoid shape with the length of an upper bottom longer than that of a lower bottom,a second waist line is determined through the upper bottom, the lower bottom and a first waist line of the trapezoid where the side face of the blade root part is located, a first side line of the side face of the blade body part is connected with the first waist line, a second side line of the side face of the blade body part is connected with the second waist line, and the second side line is located on an extension line of the second waist line. The invention further provides a moving blade assembly of a steam turbine. At least one steam turbine slim blade is arranged on the moving blade assembly of the steam turbine. According to the steam turbine slim blade, a bulging structure arranged on the upper side face of a standard moving blade is cut off, the flatness of the blade body part is improved, and the technical problem that a traditional standard moving blade is difficult to install due to the bulge on the traditional standard moving blade is solved.
Application Domain
Blade accessoriesLeakage prevention +1
Technology Topic
EngineeringSteam turbine
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