Low-water-level measuring device for model test

Abstract

The invention discloses a low-water-level measuring device for a model test. The low-water-level measuring device comprises a floating body positioning barrel. The floating body positioning barrel comprises a barrel body and a cover plate arranged at the top of the barrel body, the bottom of the floating body positioning barrel is provided with an opening, three supporting columns are arranged at the opening of the bottom of the floating body positioning barrel, and the supporting columns are arranged in parallel in the water flow direction. The device further comprises a floating module arranged in the floating body positioning barrel, the floating module comprises a floating block and a vertical rod arranged at the top of the floating block, and the floating block moves up and down along the inner side wall of the floating body positioning barrel under the action of buoyancy; the vertical rod extends out of the cylinder from the through hole in the cover plate; the device also comprises a reading device arranged at the top of the cover plate; and the pointer at the top of the vertical rod points to the reading device. Compared with a steel ruler measuring mode, the measuring device can be placed at any position of a model test water tank to measure the water level, the measuring device is convenient to move, a measuring result is convenient to observe, and meanwhile due to the fact that the underwater submerging degree of the floating block is extremely small, the measuring device can accurately measure the low water level (the water level with the water depth of 3-10 cm).

Description

technical field [0001] The invention relates to a water level measuring device, in particular to a low water level measuring device used for model tests. Background technique [0002] With the continuous development of scientific research experiments, physical model tests are one of the important means for scholars to realize scientific research, and can be used to simulate actual engineering conditions. Model tests are widely favored in water conservancy, construction and other industries, especially hydraulic and river engineering physical model tests. When conducting model tests, the water level is often an important object of simulation attention, but sometimes there are large errors in water level measurement due to reasons such as too low water level or fluctuations in water level. It is even more difficult to measure the water level in the center of the river. At present, there are mainly three ways to measure the water level in the model experiment: one is to measu...

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Problems solved by technology

[0003] Purpose of the invention: The present invention aims at the problems of the limitation of the measuring position in the water level measurement of the model experiment in the prior art, the low accuracy of measuring the low water level or the ultra-low water level, and the difficulty of observation, and provides a method capable of realizing the measurement of the low water level and the ultra-low water level Water level measuring device

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