Five-hole wind speed probe calibrating experiment table

Abstract

The invention discloses a five-hole wind speed probe calibrating experiment table. Two round steel pipes with the same size are vertically fixed on the two sides of the upper surface of a rectangular steel plate. The two round steel pipes are connected with one end of two sliding bearing seats in a sliding mode respectively and fixed. Two identical suspension rods and a base plate form a U-shaped steel suspension basket. The upper ends of the two suspension rods are fixed on the other ends of the respective sliding bearing seats respectively through two bolts and connected with the other ends of the sliding bearing seats to form a swinging mechanism. A round sinking pit is formed at the center of the base plate of the U-shaped steel suspension basket and a round revolving disc is arranged in the round sinking pit through a bearing. The round revolving disc is provided with a T-shaped groove on which a five-hole wind speed probe is installed. The blown portion of the five-hole wind speed probe is located at the intersection point of the swinging axis of the U-shaped steel suspension basket and the revolving axis of the round revolving disc. According to the five-hole wind speed probe calibrating experiment table, the side sliding angle and the pitching angle of the five-hole wind speed probe can be fast and accurately adjusted, the position of the blown portion of the five-hole wind speed probe in an calibrating wind field can be kept and the wind speed can be kept constant. The calibrating precision and the calibrating efficiency of the five-hole wind speed probe are greatly improved.

Description

technical field [0001] The invention relates to a test device in the technical field of wind engineering test, in particular to a five-hole wind speed probe calibration test bench. Background technique [0002] The five-hole wind speed probe is an important means to test the wind speed scalar and vector in complex three-dimensional wind fields, and is widely used because of its high measurement accuracy and low cost. The five-hole wind speed probe must be calibrated before use. The so-called calibration is to place the five-hole wind speed probe in a uniform flow field with known wind speed and direction, and measure the five-hole wind speed probe at different wind speeds, different sideslip angles and pitch angles. According to the pressure of the five pressure measuring holes, calibration curves such as angle characteristic curve, dynamic pressure characteristic curve, total pressure characteristic curve and static pressure characteristic curve are drawn. In the complex t...

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Problems solved by technology

[0003] Due to the heavy workload of the calibration of the five-hole wind speed probe, the precision of the probe installation is very high. Unfortunately, most of the wind tunnel laboratories in China do not have a set that can install the probe more flexibly and accurately adjust the sideslip angle. and elevation angle device, which seriously affects the calibration accuracy and calibration efficiency of the five-hole probe

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