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A sample used for testing the connection structure of wind power blades and its manufacturing process

A technology for connecting structures and wind turbine blades, which is applied in the preparation of test samples, household components, sustainable manufacturing/processing, etc., can solve the problems of frequent testing, restricting the development prospects of large wind turbines, and the high cost of making mold models. Facilitate reliability verification, reduce production material cost and time cost

Active Publication Date: 2021-11-26
CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Wind power blades are one of the important components that convert wind energy into mechanical energy. Blades account for 20%-25% of the total equipment cost of wind turbines. , installation and maintenance costs) have greatly increased, restricting the development prospects of large-scale wind turbines
[0003] In order to solve the above problems, fan blades are manufactured in sections in the prior art, and the segmented blades are assembled into complete blades through bolt connection, structural glue connection or combined connection, but the connection method involves frequent tests in the initial verification stage, and a large number of The cost of making molds and models is relatively high

Method used

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  • A sample used for testing the connection structure of wind power blades and its manufacturing process
  • A sample used for testing the connection structure of wind power blades and its manufacturing process
  • A sample used for testing the connection structure of wind power blades and its manufacturing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Such as Figure 1 to Figure 3 The sample used for testing the connection structure of wind turbine blades shown, the sample includes a first scaled test piece 1 and a second scaled test piece 2;

[0069] The first scaled test piece 1 and the second scaled test piece 2 are oppositely provided with matching first profile and second profile, and the first profile and the second profile are provided with a vertical connection portion a and a bend The connecting part b is folded, the clamping block 3 is placed on the vertical connecting part a, and the first scale parallel to the vertical connecting part a is provided on the side away from the vertical connecting part a of the first scaled test piece 1 and the second scaled test piece 2. The spacer 4 and the second spacer 5 , the first spacer 4 and the second spacer 5 clamp the first scaled test piece 1 and the second scaled test piece 2 through the fastener 6 .

[0070] In the preferred embodiment of the present invention,...

Embodiment 2

[0076] Such as Figure 4 to Figure 8 As shown, the present invention also provides a manufacturing process of a sample used for testing the connecting structure of wind power blades, which is used to make a sample used for testing the connecting structure of wind power blades. The manufacturing process includes the following steps:

[0077] Step 1: Based on the shape structure of the first scaled test piece 1 and the second scaled test piece 2, the lay-up and perfusion system arrangement are carried out on the prefabricated mold; the prefabricated mold is used to constrain the molding of the first profile and the second profile, Therefore, the assembly accuracy of the first profile and the second profile is ensured.

[0078] Step 2: After the lay-up and perfusion system layout are completed, the first scale-down test piece 1 and the second scale-down test piece 2 are covered with double-layer vacuum, and the pressure is kept under vacuum, and the pressure loss is less than 1KP...

Embodiment 3

[0117] Such as Figure 9 The shown vertical connection part a and the bent connection part b adopt a circular arc transition, and the bent connection part b adopts a connection form without glue. The implementation process of non-adhesive bonding: directly use the torque wrench bolts to lock the parts at a torque of 87 Nm.

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Abstract

The invention relates to the technical field of wind power generation, in particular to a sample used for testing the connection structure of wind power blades and its manufacturing process. The sample includes a first scaled test piece and a second scaled test piece; the first scaled test piece and the second scaled test piece There are matching first profile and second profile on the two-scale test piece, the first profile and the second profile are provided with a vertical connection part and a bending connection part, and a clamp block is placed on the vertical connection part , on the side of the first scaled test piece and the second scaled test piece away from the vertical connection part, a first spacer and a second spacer parallel to the vertical connection part are provided, and the first spacer and the second spacer pass through The fastener clamps the first scaled test piece and the second scaled test piece. In the present invention, by using the first scaled test piece and the second scaled test piece, it is convenient to verify the reliability of the connection mode in the frequent test of the connection mode in the initial verification stage, and reduces the cost and time of making the sample used in the test. cost.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a sample used for testing a connection structure of wind power blades and a manufacturing process thereof. Background technique [0002] Wind power blades are one of the important components that convert wind energy into mechanical energy. Blades account for 20%-25% of the total equipment cost of wind turbines. , installation and maintenance costs) have been greatly increased, restricting the development prospects of large-scale wind turbines. [0003] In order to solve the above problems, fan blades are manufactured in sections in the prior art, and the segmented blades are assembled into complete blades through bolt connection, structural glue connection or combined connection, but the connection method involves frequent tests in the initial verification stage, and a large number of The cost of making molds and models is relatively large. [0004] In view of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/36G01N1/28B29C70/44B29C70/54
CPCG01N1/36G01N1/286B29C70/443B29C70/54G01N2001/366G01N2001/2873B29L2031/085Y02P70/50
Inventor 谈昆伦曹磊白高宇刘叶霖杜秋萍季小强
Owner CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH