A method for improving the length consistency of wind turbine blades with the same airfoil

Abstract

The invention discloses a method for improving the consistency of the length of wind turbine blades with the same airfoil. The method comprises the steps that (1) fixed-point marks are made on the inner sides of formed dies of the wind turbine blades with the same airfoil, and the fixed-point marks are displayed on the surfaces of wind turbine blade precast products prepared by the formed dies andare close to the blade root parts; (2) the vertical distance D between the fixed-point marks and the end surfaces of the blade root parts of the wind turbine blades of actual requirement; and (3) primary flat cutting is conducted on the blade root rough end surface of each blade precast product produced by the corresponding formed die, the vertical distance F between the blade root end surfaces and the fixed-point marks after the primary cutting is measured, then F-D distance is used as secondary cutting cutter entering distance, and determination of the length of each wind turbine blade is completed. According to the method for improving the consistency of the length of the wind turbine blades with the same airfoil, the fixed point marks are arranged on the formed dies of the wind turbine blades, defects of error superposition when measuring the length of the blades are overcome, the operation steps are simplified, the production efficiency and the blade machining precision are improved, and the length uniformity of the wind turbine blades of the same airfoil are greatly improved.

Description

technical field [0001] The invention relates to the field of manufacturing wind power blades, in particular to a method for improving the length consistency of wind power blades of the same airfoil. Background technique [0002] In order to ensure the aerodynamic balance of the three blades of the wind turbine and the weight of the complete set of blades is closer, it is necessary to ensure that the length of the wind turbine blades of the same airfoil is as consistent as possible. [0003] At present, the bolt design of the blade root mainly includes: 1) the embedded bolt sleeve at the root; 2) the T-shaped bolt design at the root. The measurement method of determining the length of the wind power blade with T-bolt design at the root is mainly as follows: after placing the blade on the perforated bracket to find the correct attitude, use the line pendant to reach the vertical position of the ground with the blade tip surface and the blade root end surface as the reference r...

AI Technical Summary

Problems solved by technology

[0004] In this method, the tip surface and the root surface of the blade are drawn to the ground for two times with a pendant to make a vertical line, and at the same time, an infrared range finder or a long steel tape is used to measure the projected length of the blade on the ground. The impact of tool accuracy will cause error accumulation, leading to large measurement errors, and ultimately resulting in inaccurate manufacturing and processing lengths of wind turbine blades

[0005] It can be seen that the above-mentioned existing method for improving the length consistency of the same airfoil wind turbine blade still has inconvenience and defects, and needs to be further improved urgently.

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