H-shaped vertical axis wind turbine blade static force structure test device and method

A wind turbine blade and static test technology, which is applied in the testing of machines/structural components, measuring devices, testing of mechanical components, etc., can solve problems such as complex force conditions on blades and difficult analysis of blade structural performance, and achieve strong Adaptability, accurate and reliable results, simple and convenient operation

Active Publication Date: 2015-07-29
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual operation, the force of the blade is more complicated. The wind load and inertial load make the blade bear various stress forms such as bending and torsion, and the blade has a certain angle of attack, which makes the structural performance analysis of the blade more difficult.

Method used

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  • H-shaped vertical axis wind turbine blade static force structure test device and method
  • H-shaped vertical axis wind turbine blade static force structure test device and method
  • H-shaped vertical axis wind turbine blade static force structure test device and method

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0023] Taking double-supported blades as an example, such as figure 1 As shown, the H-type vertical axis wind turbine blade structure static test device of the present invention includes a bearing part 1, a loading hoop 2, a primary distribution beam 3, two secondary distribution beams 4, a connecting part 5 (preferably For suspension rope or hinge), force sensor 6, displacement sensor and strain gauge. According to the bending moment distribution required to load the blade, determine the position of the support part 1, the position of the loading hoop 2 and the lengths of the first-level distribution beam 3 and the second-level distribution beam 4, specifically including: the connection between the loading hoop 2 and the support part 1 distance B 1 ,...

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Abstract

The invention relates to an H-shaped vertical axis wind turbine blade static force structure test device and a method. The device comprises a supporting seat component, a loading hoop, a distribution beam, a connecting component, a force sensor, a displacement sensor and a strain gauge. During a test, the length L of the distribution beam is adjusted and the position B of the loading hoop is loaded, so the actual bending moment distribution of a blade under various work conditions can be simulated; the supporting seat component is adjusted and the structural form of the loading hoop is loaded, so the stress state of the blade under axial torque and multiple angles of attack can be simulated. The deformation and the strain distribution of the blade under a loading condition can be measured, so that the structural performance of the blade can be assessed. The invention applies an external load to the device, the combined loading forms of bending, torqueing and having multiple angles of attack of the blade can be realized, the operation is simple and convenient, the result is accurate and reliable, and the universality is stronger.

Description

technical field [0001] The invention relates to a static structure test device, in particular to a static structure test device and method for a blade of a large H-type vertical axis wind power generator. Background technique [0002] The wind wheel device of a large H-shaped vertical axis wind turbine consists of blades, brackets and a main shaft. The brackets are used to connect the blades and the main shaft to form a large H-shaped frame structure with a certain rigidity. Common frame structures include single bracket and double brackets. There are two types. The blade is a key component of the wind turbine, which is related to the operation safety and stability of the entire unit. In order to ensure the static load bearing capacity and strength of the blade, it is necessary to conduct a structural static test on the blade to measure the structural performance of the blade under various working conditions. In actual operation, the force of the blade is more complicated. ...

Claims

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Application Information

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IPC IPC(8): G01M13/00
Inventor 陈啸唐荆
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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