Improved air volume measuring device based on L-shaped pitot tube

Abstract

An improved air volume measuring device based on an L-shaped pitot tube comprises a pitot tube composed of a U-shaped tube and an L-shaped tube. A cross-shaped tube is arranged at the rear end of the L-shaped tube, the two adjacent ends of the cross-shaped tube are connected with the static pressure end and the total pressure end of the U-shaped tube respectively, the U-shaped tube is filled with liquid, a strip-shaped gradienter is arranged on the L-shaped tube, and the strip-shaped gradienter is parallel with the L-shaped tube. The upper end of the cross-shaped tube is connected with the static pressure end of the U-shaped tube, a plummet is hung to the lower end of the cross-shaped tube, the lower portion of the L-shaped tube is movably connected with a guide rail through a slider support, and the slider support moves in the guide rail to make the L-shaped tube keep horizontal. The improved air volume measuring device solves the personal error problem caused by the fact that the L-shaped tube is held by hand, and meanwhile relevant improvement is made for solving the measuring point positioning problem in the air volume measuring process, data measuring accuracy is guaranteed, workloads of personnel are reduced, and human resource cost is reduced.

Description

technical field [0001] The invention relates to an air flow measuring device, in particular to an improved air flow measuring device based on an L-shaped pitot tube. Background technique [0002] Pitot tube, also known as Pitot tube, is a commonly used instrument for measuring the mean point flow velocity in the laboratory. In scientific research, production, teaching, environmental protection, clean room, mine ventilation, and energy management departments, pitot tubes are commonly used to measure the wind speed of the pipeline and the air velocity in the flue of the kiln. After conversion, the flow rate can be determined, and the water flow velocity in the pipeline can also be measured. Using Pitot tube to measure speed and determine flow has a reliable theoretical basis, is easy to use, and is accurate. It is a classic and extensive measurement method. The Pitot tube generally consists of an L-shaped tube and a differential pressure gauge composed of a U-shaped tube. ...

AI Technical Summary

Problems solved by technology

[0024] In view of the deficiencies in the prior art, the primary purpose of the present invention is to provide an improved air volume measurement device based on an L-shaped pitot tube, which not only solves the problem of human error caused by holding the L-shaped tube, but also solves the problem of air volume encountered in the process of air volume measurement. The measurement point positioning problem has been improved to ensure the accuracy of data measurement, reduce the workload of personnel, and reduce the cost of human resources

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