Inclination and deformation detection method facing wind power tower cylindrical building

Abstract

The present invention discloses an inclination and deformation detection method facing a wind power tower cylindrical building. A laser plummet is arranged at the bottom portion of the internal portion of the tower cylinder, and emits a laser plumb line upwards; one or more than one coordinate plate devices which a laser penetrates are arranged in the tower cylinder, and the coordinate plate devices are arranged at different monitoring heights; a plurality of vision imaging measurement sensors matched with the coordinate plate devices and used for displacement measurement for laser projection points on the coordinate plates are provided; and each vision imaging measurement sensor transmits the vision imaging measurement result at the respective height to a monitoring information system, and the inclination and deformation state of a tower cylindrical building is calculated according to the position change of the projection points on the coordinate plates at different heights and the inclination and deformation of the tower cylindrical building at different heights can be monitored in real time. The method is high in detection precision and high in sensitivity, cannot be disturbed by external weather conditions, is simple in engineering laying, and can perform flexible deformation monitoring for the wind power tower cylinder.

Description

technical field [0001] The invention relates to a tilt deformation detection method for wind power tower cylindrical buildings. Background technique [0002] In 2017, the total installed capacity of wind power in China reached 188 million kilowatts, and the total number of wind turbines was close to 20,000, and it was expected to increase at an annual growth rate of 9%. It is predicted that the total installed capacity will reach 315 million kilowatts in 2023. The tilt deformation of the wind power tower affects the normal operation of the wind turbine. If the wind power tower tilt exceeds the limit, it will easily cause damage to the wind turbine. If the serious tilt is not corrected, it will cause a tower collapse accident. Therefore, the tilt monitoring of the wind power tower is an important task for the operation and maintenance of the wind turbine. At present, the main problems existing in the existing indoor positioning solutions on the market are: [0003] (1) Tradi...

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Problems solved by technology

[0003] (1) Traditional manual surveying and mapping methods are inefficient

Using traditional surveying and mapping methods to monitor the inclination of wind power towers is greatly affected by weather conditions. During the measurement, it is necessary to stop the machine to ensure the measurement accuracy, and it cannot be monitored in real time. The labor cost is high and the efficiency is low.

[0004] (2) The accuracy of the tilt sensor solution is insufficient

Installing tilt sensors on the top and bottom of the wind power tower to monitor the wind power tower in real time. Although the tilt data of the wind power tower can be obtained in real time, the data accuracy is insufficient and the random error is too large, so the actual tilt state of the wind power tower cannot be effectively monitored. , monitoring the inclination of 1′ requires an attitude sensor with an inclination measurement error of less than 0.002°, and the cost of such sensors is too high

[0005] (3) The accuracy of GPS real-time positioning scheme is insufficient

There are usually dynamic swings on the top of the tower, and static GPS detection cannot be performed, so the measurement accuracy of this solution is insufficient

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