A pipeline impingement jet uniform aeration generating device

Abstract

The invention discloses a pipeline impingement jet flow uniform aeration generating device, which comprises an inlet section, an aeration generation section, a transition section, a steady flow section, a contraction section and a measurement section connected in sequence, and the measurement section includes a first outer sleeve , middle sleeve, first inner sleeve, retractable circular tube, steel ball, first spring, β-ray aeration concentration meter, the central axes of the first outer sleeve, middle sleeve, and first inner sleeve coincide, and the first An inner sleeve is threadedly connected to the shrinking section, and the two ends of the shrinking round tube are respectively welded to the inner wall of the outer sleeve and the outer wall of the middle sleeve, with a built-in telescopic spring, and two rings of steel balls are built into the space between the middle sleeve and the first inner sleeve. The corresponding positions of the first outer sleeve and the middle sleeve are opened so that the ports extend between the middle sleeve and the first inner sleeve, and the space between the first outer sleeve and the middle sleeve can rotate around the central axis. The invention has ingenious structure, simple structure and convenient operation, and can form evenly distributed aerated water flow in the pressurized pipeline.

Description

technical field [0001] The invention relates to a pipeline impingement jet flow uniform aeration generating device, which belongs to the field of water conservancy. Background technique [0002] Impinging jets are widely used in water conservancy projects, such as picks in water conservancy and hydropower drainage projects, falling water tongues impacting pools, etc. Key parameters such as scour downstream need to be estimated, which must be demonstrated through hydraulic model tests . However, no matter which simulation method is used, due to the complex flow conditions and natural rock foundation structure, it brings a lot of interference to the accuracy of the simulation results. The dissimilarity of water flow aeration and diffusion mechanism between the model and the actual prototype, etc., make there is a strong "scale effect" in the test results of the jet jet model. [0003] At present, some studies have found that aeration will significantly increase the pulsating...

AI Technical Summary

Problems solved by technology

However, there is no device in the prior art that can make the jet flow aeration test device meet the function of generating different uniform aerated water flows under different geometric scales, different flow velocities and other incoming flow conditions. Based on the above defects, the present invention proposes A good pipeline impingement jet uniform aerated water flow generating device

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