Method for measuring gradient of tower

A measurement method and technology of inclination, which is applied in the field of measurement, can solve problems such as difficulty in guaranteeing vertical displacement measurement accuracy, large inclination error, and difficult measurement of vertical displacement, achieving high precision, improving measurement accuracy, and simple measurement methods

Active Publication Date: 2014-04-30
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, in the process of realizing the present invention, the inventor found the following defects in the prior art: for the measurement of inclination, it is all by observing the upper flange of the foundation ring and the lower flange of the bottom of the tower body The vertical displacement of the connection part is

Method used

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  • Method for measuring gradient of tower
  • Method for measuring gradient of tower

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0024] Example one

[0025] The method for measuring the inclination of the tower in this embodiment includes the following steps:

[0026] Step 1: Set up multiple measurement points on the tower, multiple measurement points are on the same horizontal plane and on the same circle, multiple measurement points and the center point on the center axis of the tower on the same horizontal plane form multiple measurement lines. In addition, at least the included angle between the two measurement lines is not 180 degrees; in the embodiment, for ease of description, the measurement line is defined as a ray that passes through the measurement point with the center point as the starting point.

[0027] Step 2: Measure multiple first displacements generated by multiple measurement points in the directions of multiple measurement lines, where the first displacement is the displacement of the multiple measurement points relative to the original position of each measurement point when the tower is ...

Example Embodiment

[0044] Example two

[0045] Such as Image 6 As shown, in this embodiment, six measurement points are set on the tower, for example, 1a, 1b, 1c, 1d, 1e, 1f, and the angle between the measurement lines corresponding to each measurement point is 60 degrees. , That is, 6 measuring points divide the circumference into equal parts.

[0046] When six measurement points are set, when tilt occurs, Image 6 In the coordinate system shown, the direction close to the center point is positive, and the direction away from the center point is negative. In this case, step 3 of the first embodiment above can be specifically: selecting the two first displacements with the first two digits in numerical value among the three positive first displacements, and selecting the two first displacements with the numerical value in the first two digits according to the numerical value. One displacement, calculate the second displacement of the virtual point. Of course, as an equivalent technical solution, a...

Example Embodiment

[0053] Example three

[0054] Such as Figure 7 As shown, in this embodiment, four measurement points are set, for example, 2a, 2b, 2c, and 2d respectively. The angle between the measurement lines corresponding to each measurement point is 90 degrees, that is, the four measurement points divide the circumference Divide equally.

[0055] When four measuring points are set, follow Figure 7 In the standard x-axis and y-axis coordinate system shown, these four points are all on the x-axis and y-axis, and the direction toward the center point is still positive, and the direction away from the center point is negative. When tilting occurs, two positive first displacements and two negative first displacements are generally measured. In this case, step 3 of the first embodiment can be specifically: according to two positive first displacements Calculate the second displacement of the virtual point. Of course, as an equivalent technical solution, the absolute value of two negative firs...

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Abstract

The invention provides a method for measuring gradient of a tower. The method comprises the following steps: setting a plurality of measuring points on the tower, wherein the plurality of measuring pints are arranged on the same level and on the same circumference, the plurality of measuring points form a plurality of measuring lines with the center point on the center shaft of the tower on the same level, and the included angle between two measuring lines is not 180 degrees; measuring a plurality of first displacements generated by the plurality of measuring points in the directions of the plurality of measuring lines, wherein the first displacement is the displacement of the plurality of measuring points relative to the original positions of each measuring point when the tower does not incline; according to the plurality of first displacements, calculating a second displacement of a virtual point in the actual inclination direction of the tower, wherein the virtual point and the plurality of measuring points are located on the same circumference; calculating the gradient according to the second displacement and the height of the plurality of measuring points relative to an inclination reference surface. The measuring manner of the method for measuring the gradient of the tower is simple, complex equipment such as level gauge is not required, and furthermore, the measuring precision of the gradient is improved.

Description

technical field [0001] The invention relates to a measuring method, especially a measuring method for the inclination of a tower Background technique [0002] In recent years, the application of high-power wind turbines and wind turbines in low wind speed areas has increased rapidly. The hubs of these wind turbines are set higher, and the load is also very large, which makes the wind turbines have a greater impact on the foundation ring and the tower connected to the foundation ring. The tilt of the body is more sensitive. For this purpose, after the entire wind turbine has been installed, it is necessary to measure the inclination of the wind turbine tower. The inclination measuring method of the prior art is as follows: [0003] Method 1: One person sets up a level outside the tower, and one person holds a ruler to observe the gap between the foundation ring and the flange pair connected to the tower, and infer the inclination of the tower through the change in the size ...

Claims

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Application Information

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IPC IPC(8): G01C9/00
CPCG01C1/00G01C9/00
Inventor 丛欧张龙君
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP
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