Novel turbine blade

A technology for steam turbine blades and blades, which is applied in the direction of blade support components, mechanical equipment, engine components, etc., can solve the problems that blade radiation lines are not on the same plane, cannot guarantee accuracy, and affect blade life, so as to prevent water corrosion and Lateral movement, life extension effect

Inactive Publication Date: 2016-02-17
TIANJIN QUANDA TECH
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  • Description
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Problems solved by technology

The blades of steam turbines, especially the blades at low-pressure parts, often suffer from water erosion, which seriously affects the life of the blades. In addition to mechanical factors, the water corrosion of the blades also has electrochemical factors. At present, the anti-corrosion technology adopted in China is based on mechanical factors. It can more or less prolong the life of the blades, but it cannot play a substantial role; during the assembly process, a number of blades are annularly wound on the rotor, and the traditional steam turbine blades have no positioning device during the assembly process, so their accuracy cannot be guaranteed , it often happens that the radial lines of the moving blades are not on the same plane, resulting in dislocation of the radial lines and unstable operation

Method used

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] The blade 1 is annularly wound on the rotor, and the blade shroud 4 is located on the blade. The inner radial surface of the blade shroud 4 is provided with a groove 3, and the outer radial surface of the blade shroud body is provided with a protruding tooth 2 that can fit into the groove 3 to realize adjacent The positioning of the blade crown, while avoiding the lateral movement of the blade, improves the accuracy. The surface of the blade 1 is covered with a layer of ceramic material 5. The manufacturing steps of the ceramic material 5 are: firstly polish the blade surface, and evenly cover the blade surface with a special Ceramic soil, sent to the kiln for firing.

[0018] Finally, it should be noted that: the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the p...

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Abstract

The invention discloses a novel turbine blade. According to the novel turbine blade, concave grooves and convex grooves are formed in a blade crown, and adjacent blade crowns are positioned through meshing of the concave grooves and the convex grooves, the meshing degree of the concave grooves and the convex grooves is high, the blade crown is effectively prevented from moving transversely, positioning of the blade is effectively ensured during assembly, and the precision of the blade is improved. The surface of the blade is covered with a layer of high-temperature and high-strength ceramic materials in the blade manufacturing process, the water corrosion phenomenon of the blade can be effectively avoided, in addition, operation is simple, implementation is easy, effects are obvious, and the service life of the turbine blade is effectively prolonged.

Description

technical field [0001] The invention relates to a novel steam turbine blade, relates to a blade device, and belongs to the field of steam turbine blade devices. Background technique [0002] The steam turbine blade is an important device used in the steam turbine to guide the fluid to flow in a certain direction and push the rotor to rotate. The blades of steam turbines, especially the blades at low-pressure parts, often suffer from water erosion, which seriously affects the life of the blades. In addition to mechanical factors, the water corrosion of the blades also has electrochemical factors. At present, the anti-corrosion technology adopted in China is based on mechanical factors. It can more or less prolong the life of the blades, but it cannot play a substantial role; during the assembly process, a number of blades are annularly wound on the rotor, and the traditional steam turbine blades have no positioning device during the assembly process, so their accuracy cannot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/14F01D5/28
Inventor 王娜
Owner TIANJIN QUANDA TECH
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