Flow measurement method and device

Abstract

The invention provides a flow measurement device which comprises a water pump, a pressure difference transducer and a data processor. The height of the pressure difference transducer is larger than that of a water inlet and a water outlet of the water pump; the pressure difference transducer is used for acquiring pressure difference signals at the water inlet and the water outlet of the water pump and sending the acquired pressure difference signals to the data processor; by setting the height of the pressure difference transducer to be larger than that of the water inlet and the water outlet of the water pump, impurities such as sludge and sand in water cannot easily enter the pressure difference transducer due to the gravity action, the influence of the impurities in the water on the measurement device is avoided, and therefore the measurement precision is improved. The data processor is used for determining flow data of the water pump according to the received pressure difference signals and a mapping relation, the mapping relation is a corresponding relation between flow and a pressure difference, therefore, the measured flow data is small in error, and the calculation speed is high.

Description

technical field [0001] The invention relates to the technical field of fluid measurement, in particular to a flow measurement method and device. Background technique [0002] The problem of overexploitation of groundwater has seriously affected social development and the construction of ecological civilization. With the reduction of groundwater reserves, regional water supply security cannot be effectively guaranteed. In addition, due to the long-term overexploitation of groundwater in some areas, a series of ecological and environmental problems have been caused. Especially in North China, due to the overexploitation of groundwater for many years, the North China Plain has become the largest "funnel area" in the world, and the largest funnel covers an area of ​​more than 8,800 square kilometers. This seriously restricts the sustainable development of economy and ecology in the east of our country. It can be seen that when exploiting groundwater, it is very important to d...

AI Technical Summary

Problems solved by technology

Groundwater often contains a lot of sediment or dirt. If the above-mentioned flowmeter is used, it is easy to accumulate dirt on the electrodes, and even damage the internal components of the flowmeter, which will affect the accuracy of the flowmeter.

Moreover, the above flowmeters are expensive, which is not conducive to widespread use

Images