Flow measuring device and method

Abstract

The invention provides a flow measuring device and method. The device comprises a discharge pipe used for introducing a water flow under test; a header tank used for acquiring the water flow introduced by the discharge pipe; a measurement part used for measuring the weight of the header tank and then transmitting the weight; and a data processing device used for receiving the weight and calculating the rate of the water flow based on the weight. The device and the method have the advantages of high precision of measurement data, wide flow application range, high data time resolution, small data fluctuation and the like. Therefore, the device and the method are especially suitable for the small-flow continuous runoff measurement.

Description

technical field [0001] The invention relates to the field of flow measurement, in particular to a flow measurement device and method. Background technique [0002] Flood disasters are one of the main natural disasters in my country. The accuracy of secondary flood simulation is the key issue for accurate early warning and prevention of flood disasters, and the understanding of rainfall infiltration and runoff process is the core of accurately simulating hydrological processes. Hydrological experiments are an important means to study the process of rainfall infiltration and runoff. The time resolution and accuracy of flow observation in hydrological experiments are directly related to the data quality of hydrological experiments and affect subsequent analysis and research. [0003] At present, the flow measurement methods in hydrological experiments are mainly triangular weir method and volume method. The triangular weir method is only suitable for flow observations when the...

AI Technical Summary

Problems solved by technology

The triangular weir method is only suitable for flow observations when the flow changes little, and a triangular weir model is only suitable for flow observations within a certain range, and the fluctuation of the water level will cause large fluctuations in the flow data

The volumetric method is divided into calculating the volume by water level and directly measuring the volume by measuring cylinder. The former has the problem similar to the triangular weir flow measurement. , the measuring cylinder method to measure the volume and calculate the flow rate

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