Two-dimensional wind speed and wind direction measuring device based on pressure difference

Abstract

The invention discloses a two-dimensional wind speed and wind direction measuring device based on pressure difference, and the device comprises a hollow vertical column, and two box-type two-dimensional square columns which are disposed on the hollow vertical column and are stacked at the difference of 45 degrees, wherein the vertical surfaces of four sides are each provided with a row of pressuremeasurement holes. The pressure measurement holes on two opposite vertical surfaces are gathered to a corresponding pressure measurement main pipe through branch pipes. The pipeline of each pressuremeasurement main pipe is provided with a pressure difference sensor and a first and second pressure difference zero calibration switches. The device measures the wind speed in a mode of pressure measurement, and employs a pneumatic averaging method for reducing the number of pressure difference sensors and reducing the cost. The device is provided with the pressure difference zero calibration switches, thereby improving the precision. The pipes for pressure measurement and the sensors can be connected through insulating pipes, thereby avoiding the impact from the severe environments, such as thunder. The device is especially suitable for the wind speed and wind direction measurement at the top of super high-rise buildings and other outdoor environments.

Description

technical field [0001] The invention relates to two-dimensional wind speed and direction measuring equipment, in particular to a pressure difference-based two-dimensional wind speed and direction measuring device. Background technique [0002] On-site measurement is a reliable means to study the wind resistance design of structures. The source of actual measurement data is often the wind speed data at the height of 10m in the open area measured by the weather station. For super high-rise buildings, when considering the wind speed at the top, the weather station data is often used for conversion. The problems in the converted data are as follows: 1. Due to the change of urban topography, the ground roughness of the weather station has changed, and the reliability of the measured data itself is doubtful; 2. There are many tall buildings around super high-rise buildings, and the wind conditions are complicated, so the converted wind speed is not reliable. Therefore, it is nec...

AI Technical Summary

Problems solved by technology

The problems in the conversion data are: 1. Due to the change of urban topography, the ground roughness of the weather station has changed, and the reliability of the measured data itself is doubtful; 2. There are many tall buildings around super high-rise buildings, and the wind conditions are complicated, so the conversion of wind speed is not reliable

These three types of anemometers have their own disadvantages when used for long-term outdoor measurement of wind fields on the top of super high-rise buildings: the bearings of mechanical anemometers are prone to aging, and the mechanical components are easy to wear and tear under the action of strong typhoons, and they are unstable; the wind speed of ultrasonic anemometers is expensive. Excessive wind speed will affect the propagation speed of ultrasonic waves and thus affect the actual measurement results, and it is easily damaged in lightning weather; the hot wire anemometer is suitable for low wind speed measurement under laboratory conditions, and requires the direction of the heat sink to be perpendicular to the direction of the airflow, and the accuracy is not high enough

[0004] Although the existing wind speed and direction instruments can measure wind speed and direction, but in view of the special conditions on the top of super high-rise buildings, the wind speed is relatively high, especially in typhoon weather, the above-mentioned equipment is not suitable for wind speed measurement

Images