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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For conventional models, the moving blades are installed on the rotor in a ring shape; but for high-speed models, there are many types of moving blades, but there will be a standard moving blade that cannot pass through the blade root slot during assembly Installed on the rotor, the structure of the standard moving blade is as follows figure 1 As shown, the side of the blade root o

Method used

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Examples

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Example Embodiment

[0017] Aiming at the technical problem that the moving blades are difficult to install in the prior art, the present invention provides a steam turbine self-cultivating blade and a moving blade group formed by it.

[0018] The following describes the technical solutions in the embodiments of the present invention clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0019] See Figure 1-Figure 3 , The embodiment of the present invention provides a steam turbine self-cultivating blade, including: a blade body 2, a blade root 4, a shroud 7 and a boss 1. Among them: the lower end of the blade body 2 is

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PUM

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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.

Description

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Claims

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Application Information

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Owner CHINA CHANGJIANG ENERGY CORP GROUP
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