Deformation testing device with wind power generator tower tube connected with foundation and application of deformation testing device

Abstract

The invention discloses a deformation testing device with a wind power generator tower tube connected with a foundation and application of the deformation testing device. The device comprises a full warming high-precision dip angle sensor and a data acquiring module; the dip angle sensor and the data acquiring module are connected; when the foundation is a land draught fan foundation, in the height direction, the dip angle sensor is installed at the h position starting from the foundation top face, and h is smaller than 2 m, and the x axis and the y axis of the dip angle sensor are parallel with the radial direction and the tangential direction of a foundation connection segment tower tube correspondingly; when the foundation is an offshore draught fan foundation, the dip angle sensor is fixed below the seawater face. The testing precision and the reliability of the deformation testing device are remarkably improved; the application of the deformation testing device with the draught fan tower tube connected with the foundation in the construction period and the service period is provided; the safety monitoring index of a high-precision foundation connection segment is determined, and a basis is provided for safety evaluation of the structure; and a testing and analyzing scheme is simple, perform is more stable, installing is easy and convenient, and investment is saved.

Description

technical field [0001] The invention belongs to the fields of wind power generation and new energy, and in particular relates to a deformation testing device for connecting a wind power generator tower to a foundation and its application. Background technique [0002] A wind turbine (hereinafter referred to as a fan) is mainly composed of a nacelle, blades, tower, foundation, etc., wherein the nacelle and blades are located on the top of the tower. For onshore wind power, the foundation ring connection or anchor bolt connection is used between the wind turbine tower and the foundation. For offshore wind power, the foundation ring connection, flange bolt connection or grouting sleeve connection is used for the wind turbine tower and foundation. The segments of the base connection are collectively referred to as the base connection segment. In the process of wind turbine foundation construction, it is necessary to accurately adjust the connection section of the installation f...

AI Technical Summary

Problems solved by technology

[0004] The current fan monitoring method based on the inclination sensor (or inclination acceleration sensor group) has the following problems: 1) The sensor is installed on the upper middle and top of the tower, which is seriously disturbed by the vibration of the fan and introduces noise, although some tests use filtering and other methods to filter High-frequency signals are dropped, but this processing significantly reduces the test accuracy and sensitivity, and the identification sensitivity to tower and foundation defects is low

2) The sensor type selection and technical indicators are not clear, the number and types of sensors arranged are many, and the field test system layout is complicated and cumbersome

3) The connection between the wind turbine tower and the foundation is crucial to the bearing capacity of the structural system, but the detection of this important part is blank in the existing technology

4) For the detection or monitoring of the foundation connection section of the fan, there is a lack of a set of testing methods and a method for determining safety monitoring indicators

[0005] To sum up, the foundation connection section of the wind turbine is very important for the safety of the wind turbine structure, and there is currently a lack of effective testing devices and monitoring methods

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