Framed bent device for wind tunnel flow field

Abstract

The invention discloses a framed bent device for wind tunnel flow field. A piece of circular steel plate is welded on one end of circular steel tube. The other end of the circular steel tube is welded with nuts. Screws are inserted into the circular steel tubes through the nuts. The screws and the nuts form screw pairs. The screw heads are welded with another piece of circular steel plate. More than two wind tunnel flow field testing component identical in structure are arranged in the circular steel tubes in two circular steel plates and form the frame bent device. Two semi-circle ring type steel hoops of each identical structure wind tunnel flow field testing component hoop tightly on the circular steel tubes. Pitot tubes are arranged on a piece of semi-circle ring type steel hoop through a connecting element. A total pressure hole and a static pressure hole of one ends of the pitot tubes are respectively connected with a pressure measuring device through a leather tube. The other ends of the pitot tubes are a probe. The framed bent device for wind tunnel flow field can be horizontally or vertically arranged on designated position of the wind tunnel testing section according to debugging demand of the wind tunnel flow field and installation of each pitot tube is adjusted according to requirements. The framed bent device for wind tunnel flow field can greatly improve accuracy and efficiency of flow field testing.

Description

technical field [0001] The invention relates to a test device in the technical field of structural wind engineering, in particular to a frame bending device for wind tunnel flow field testing. Background technique [0002] The wind tunnel flow field debugging is the premise of carrying out the wind resistance research of building structures, and the wind speed distribution at different heights in the wind tunnel test section directly affects the accuracy of the wind tunnel test. The Pitot tube is the most common sensor for testing the average wind speed. The average wind speed can be obtained by using the pressure measuring equipment to test the total pressure and static pressure of the Pitot tube. However, the wind speed distribution along the height in the wind tunnel needs to be tested synchronously with multiple Pitot tubes. It is necessary to develop a device for installing multiple pitot tubes, which must not only ensure the firmness of the pitot tube installation, but...

AI Technical Summary

Problems solved by technology

It is a pity that most wind tunnels in China currently do not have a device that can be used to install multiple pitot tubes more flexibly. In the flow field debugging, the test height can only be artificially changed to obtain the wind speed distribution that is not synchronized, which seriously affects Accuracy and efficiency of flow field debugging

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