Channel water metering device and method

Abstract

The invention discloses a channel water metering device and method. The device is arranged on an original channel, and is characterized by comprising a widening channel, wherein the widening channel is divided into three areas, namely, an intake water pool area, a water pipe laying area and an outlet water pool area; the water pipe laying area is composed of a row of pipelines which are sealed byconcrete; a non-full pipe electromagnetic flowmeter is arranged on one of the pipelines; and the total flow area of the pipelines in the water pipe laying area is larger than that of the original channel. Through adoption of the channel water metering device, pipeline metering of channels is realized. Through arrangement of multiple pipelines, the flow of water is not reduced, and the diameters ofthe pipelines can be reduced. Small instruments are easier to install and replace, so that the cost of instruments is lowered, and popularization is facilitated.

Description

technical field [0001] The invention relates to a channel water measuring device and method. Background technique [0002] Irrigation districts are major users of agricultural water. At present, 70% of the country's total water consumption is agricultural water, and some water-scarce areas account for more than 80%. The open channel is the main water delivery project for agricultural irrigation in the irrigation area, and the water measurement of the open channel is the key area of ​​the water measurement work in the irrigation area. In practice, standard section water measurement and weir flume water measurement are often used, and manual observation is usually used. However, these water measurement methods are limited by the observers and site conditions. When the actual channel passes through the water, the observers often fail to go to the site to observe and record in time. In practice, the quality of observed data is greatly compromised. When carrying out water mea...

AI Technical Summary

Problems solved by technology

However, in practice, the damage ratio of automated monitoring facilities is relatively high, and the automated facilities are closed systems and relatively complex. When problems arise, on-site personnel cannot solve them, which brings a lot of trouble

In addition, the high cost of construction and management of automated monitoring facilities is also an important reason affecting its promotion.

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