Multifunctional thin-plate weir flow device applied to teaching experiments

Abstract

The invention discloses a multifunctional thin-plate weir flow device applied to teaching experiments. The weir flow device comprises a water supply tank, a trough front part, an open channel trough,a trough tail gate and a thin-plate weir mechanism, wherein the thin-plate weir mechanism comprises a rectangular thin-plate weir, five fan blades at left side and five fan blades at right side; the five fan blades at the left side and the five fan blades at the right side are symmetrically arranged at two sides of the rectangular thin-plate weir; the five fan blades at the left side are hinged atthe top left corner of the thin-plate weir, and the five fan blades at the right side are hinged at the top right corner of the thin-plate weir; a rectangular notch is kept in the middle of the upperend of the thin-plate weir; and by adjusting corners of the five fan blades at the left side and the five fan blades at the right side, the thin-plate weir has a maximum weir flow cross section thatthe weir is represented as a rectangle, a minimum weir flow cross section that the weir is represented as a triangle and a medium weir flow cross section that the weir is represented as a trapezoid. In comparison with the prior art, the thin-plate weir flow device, on the basis of changes in own structure, achieves multiple purposes of the weir and realizes diverse weir flows, and the thin-plate weir flow device is obvious in effect, relatively good in anti-seepage and anti-leakage effects, stable in weir body, relatively low in cost and concise in structure.

Description

Technical field [0001] The present invention is a multifunctional thin-walled weir weir device suitable for teaching experiment designed for the single weir flow in the current weir flow experiment teaching. It belongs to the technical field of water conservancy engineering. Background technique [0002] At present, in the experimental teaching of weir flow, a weir-shaped design with a tank is often adopted. The advantage of this design is that the weir body is fixed in the tank, and the effect of anti-seepage and leakage is good, and the weir body is stable; the disadvantage is that in the teaching experiment , Only one weir type experiment can be done, and the weir type weir flow is single. If the weir type is changed in the experiment, the stability treatment, seepage prevention and leakage prevention treatment of the weir body will take a long time, and the experiment teaching task cannot be completed. Therefore, the existing technology It has a shortpart. Summary of the in...

AI Technical Summary

Problems solved by technology

[0002] At present, in the weir flow experiment teaching, a weir type is often used to configure a water tank design. The advantage of this design is that the weir body is fixed in the water tank, the seepage prevention and leakage prevention effects are good, and the weir body is stable; the disadvantage is that the weir body is stable during the teaching experiment. , only one weir type experiment can be done, and the weir flow of the weir type is single. If the weir type is changed in the experiment, the stabilization treatment of the weir body and the anti-seepage and anti-leakage treatment will take a long time, and the experimental teaching task cannot be completed. Therefore, the existing technology It has a shortpart

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