A creep-resistant blade and a wind turbine comprising the same

By setting a grid structure with circumferential ribs and radial reinforcing ribs on the blades, the problem of creep deformation of axial flow wind turbine blades at high temperatures is solved, thereby improving creep resistance and optimizing aerodynamic performance.

CN122236686APending Publication Date: 2026-06-19XIAN FANS TECH FLUID MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN FANS TECH FLUID MASCH CO LTD
Filing Date
2026-04-14
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In existing technologies, axial flow fan blades are prone to creep deformation at high temperatures, which can cause them to rub against or collide with the air guide ring. Furthermore, replacing them with high-temperature resistant materials increases costs.

Method used

Circumferential ribs and radial reinforcing ribs are provided on the blade. The circumferential ribs extend along the circumference of the blade, and the radial reinforcing ribs extend along the radial direction to form a grid-like reinforcing structure, which enhances the blade's resistance to bending and tension.

Benefits of technology

It effectively reduces blade deformation, improves the blade's creep resistance under high temperature and long-term operation, maintains blade profile accuracy, reduces aerodynamic noise, and improves aerodynamic efficiency.

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Abstract

This invention relates to the field of wind turbine blade technology, and particularly to an anti-creep blade and a wind turbine comprising it. The blade includes a blade root, blade tip, leading edge, trailing edge, suction surface, and pressure surface. A circumferential rib protrudes from the pressure surface onto the suction surface, near the blade tip. The circumferential rib extends circumferentially around the blade's rotation axis, with its two ends penetrating the leading and trailing edges, respectively. Multiple radial reinforcing ribs are arranged on the suction surface of the blade, extending from the blade root towards the blade tip. Each radial reinforcing rib is located between the protruding tip of a circumferential rib and the blade root. The connection between the circumferential and radial reinforcing ribs is a rounded transition. The multiple radial reinforcing ribs are spaced apart along the direction from the leading to the trailing edge. The anti-creep blade of this invention, through the synergistic effect of the circumferential and radial reinforcing ribs, enables the blade to maintain its original airfoil accuracy under high-temperature, long-term service conditions, thus improving the blade's anti-creep performance under high-temperature, long-term operation.
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