A multi-point velocimeter device in the vertical direction for uniform flow in an open channel

Abstract

The invention discloses an open channel uniform flow vertical direction multi-point speedometer apparatus comprising a dynamic pressure pipe, a vertical adjustable kinetic energy pipe mechanism and apressure measuring mechanism, wherein the vertical adjustable kinetic energy pipe mechanism comprises a first kinetic energy right angle pipe, a second kinetic energy right angle pipe, a third kineticenergy right angle pipe, a position adjusting ruler and a turn button; the pressure measuring mechanism comprises a differential pressure scale, a slide needle, a kinetic energy pressure measuring pipe, a pore switch, a first kinetic energy pressure measuring pipe, a second kinetic energy pressure measuring pipe, a third kinetic energy pressure measuring pipe and a communicating pipe. A horizontal segment of a first kinetic energy right angle pipe is internally placed in a horizontal segment of the dynamic pressure pipe, and a front part of the horizontal segment of the dynamic pressure pipeis provided with a dynamic pressure hole; the communicating pipe is communicated with an upper end of the first kinetic energy pressure measuring pipe, an upper end of the second kinetic energy pressure measuring pipe, an upper end of the kinetic energy pressure measuring pipe and an upper end of the dynamic pressure pipe. Compared with technologies of the prior art, the apparatus disclosed in theinvention can be used for conducting multi-point and simultaneous measurement in a vertical direction of an open channel uniform flow section; the apparatus is high in precision, low in work load, high in work efficiency, low in cost, simple in structure and large in popularization space.

Description

technical field [0001] The invention is a multi-point velocity measuring device in the vertical direction of the open channel uniform flow designed for the current single-point velocity measurement of the uniform flow section of the open channel. It belongs to the technical field of hydraulics. Background technique [0002] At present, the measurement method of the velocity field of the uniform flow section of the open channel is measured by using the Pitot tube and the rotating current meter. , when the number of cross-section points is small, the accumulation of workload changes little, and when the number of cross-section points is required to be large, the workload changes greatly, so there are deficiencies in the existing technology. Contents of the invention [0003] The technical problem to be solved by the present invention is to solve the deficiencies of the above-mentioned prior art, and to invent a multi-point velocimeter device in the vertical direction of the...

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Problems solved by technology

[0002] At present, the measurement method of the velocity field of the uniform flow section of the open channel is measured by using the Pitot tube and the rotating current meter. , when the number of cross-section layout points is small, the accumulation of workload changes is not large, and when the number of cross-section layout points is large, the workload changes greatly, so there are deficiencies in the existing technology

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