An inner cylinder limit type irrigation water metering device

Abstract

The invention discloses an inner cylinder limiting type irrigation water metering device. The inner cylinder limiting type irrigation water metering device comprises a water passing tank (4), a waterlevel control mechanism and a water volume metering device. The water passing tank (4) is installed in a revertment (1), the water passing tank (4) comprises an upper box and a lower box, the upper box is installed on the lower box, the upper box is sealed inside, the lower box is internally provided with a water separating plate (15), the water separating plate (15) divides the lower box into a left area and a right area, and the left area and the right area are separately a water inlet area and a water outlet area. A water inlet through hole communicating with one side of the revertment (1)is formed in the water inlet area, and a water outlet through hole communicating with one side of a farmland (16) is formed in the water outlet area. A water inlet hole (18) and a water drainage hole(14) are formed in the bottom of the upper box, the water inlet hole (18) communicates with the water inlet area, the water drainage hole (14) communicates with the water outlet area, and the water level control mechanism and the water volume metering device are all installed on the water passing tank (4). The intermittent water volume metering method is adopted in the inner cylinder limiting typeirrigation water metering device, the total passing water volume is calculated by accumulating the single passing water volume and the water drainage times of the water passing tank, and the meteringprecision is high.

Description

technical field [0001] The invention relates to an inner cylinder limit type irrigation water metering device, which belongs to the technical field of farmland water conservancy. Background technique [0002] Water is the lifeblood of agriculture. Agricultural water accounts for nearly 70% of the country's total water consumption, 90% of which is used for farmland irrigation. Irrigation areas play an important role in improving land productivity, improving people's living standards and developing regional economies. With the increasing demand for farmland irrigation and the continuous expansion of irrigated areas, it is imperative to formulate strict and comprehensive irrigation area management measures. However, with the rapid development of my country's social economy, the problems existing in irrigation in irrigation areas are becoming more and more prominent, such as the aging of irrigation area projects leading to the failure of water transmission and distribution funct...

AI Technical Summary

Problems solved by technology

[0004] The measurement of irrigation water volume is a basic and key technology. Traditional Parshall water measuring tanks, U-shaped water measuring tanks and other water measuring devices are only suitable for measuring large water volumes such as main canals and ditches, and are used to realize open channel water delivery in surface water irrigation areas. measurement, but the measurement accuracy of such devices is generally not high

However, some large-scale precision flow devices, such as ultrasonic flowmeters and infrared flowmeters, have high measurement accuracy, but they have high investment costs, complicated installation and high maintenance costs, which will increase the burden on farmers.

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