SU1646523A1 - Gravity irrigation system - Google Patents

Abstract

The invention relates to irrigation of agricultural crops and can be used when irrigating from underground irrigation pipelines. The purpose of the invention is to increase work efficiency through the rational use of irrigation water. The irrigation system contains an open channel 1, a distributor 2 and irrigation underground pipelines with water outlets 7. The system is equipped with a hydraulic ram 3, pipe 5 of which is connected to the upper irrigation pipe 6, and the waste pipe 8 to the underlying irrigation pipe 9. Pressure in the lower irrigation pipe 9 it is provided due to the geodetic difference of the heights of the drainage of the hydro ram and nozzles 7. 2 Il.

Description

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Fig 1

The invention relates to the irrigation of agricultural crops and can be used when irrigating from underground irrigation pipelines,

The purpose of the invention is to increase work efficiency through the rational use of irrigation water.

FIG. 1 shows a diagram of a section of an irrigation system with a hydraulic ram: FIG. 2 is a schematic diagram of the water intake from the open channel and its supply to the upper and lower irrigation pipelines.

The system includes an open channel 1, a distribution pipe 2, a hydraulic connector 3, which is directly connected to the open channel 1 through a feed line 4, the discharge pipe 5 of the hydrant tap 3 is connected to the upper irrigation pipe 6, which has water outlets over which the branch pipes are installed. 3 is connected to the underlying irrigation pipe 9.

To provide an intermittent supply of water in the supply line 4, an additional water-air cap 10, an air cap 11, which is provided with a shock valve 12 and a discharge valve 13, are installed.

Watering is carried out as follows.

The water from the open channel 1 through the feed line 4 enters the water-air cap 10, compresses the air and partially fills the discharge pipe 5. At the same time, the shock valve 12 is closed and the discharge valve 13 is in an indifferent position. Impulse valve 12 is forcibly opened and outflow of water starts from under it at a rate increasing in time. With increasing velocity, the pressure rises and, when the pressure force exceeds the weight of the shock valve 12 and its resistance,

the valve 12 is closed, the outflow of water stops, at that the water inertia opens the discharge valve 13 and the air cap 11 enters, compresses the air, rises along the discharge pipe 5 and goes to the upper irrigation pipe 6. When the pressure in the feed pipe decreases the discharge valve 13 closes and

impact valve 12 opens. The water again runs out through the percussion valve 12, the cycle repeats. The process then proceeds automatically, the water is fed in certain portions to the air cap 11 and

through it, into the discharge pipeline 5 with a predetermined flow rate, and the water poured out from under the impact valve 12 is directed to the irrigation pipeline 9 by means of a discharge pipe, while the flow rates to the upper and lower irrigation pipelines are set equal.

The pressure in the upper irrigation pipelines is ensured by the operation of the hydraulic ram, and in the lower irrigation pipelines

the pipeline - due to the mutual arrangement of the hydraulic ram and irrigation pipelines; on the irrigation system - due to the geodesic difference of the heights of the hydraulic ram drains and branch pipes of the lower irrigation pipeline.

Claims (1)

Claims of the invention A self-priming irrigation system comprising an open channel transporting and underground irrigation pipelines located perpendicular to the transporting pipeline, characterized in that, in order to increase work efficiency through the rational use of water, it is equipped with a hydraulic valve, the feed pipe of which is connected to the open channel , the discharge pipeline - with the upper irrigation, and the discharge - with the underlying irrigation pipelines. Ft.2