SU935015A1 - Automated irrigation system - Google Patents

Description

(54) AUTOMATED IRRIGATION SYSTEM

one

The invention relates to agriculture and can be applied to irrigate agricultural crops by sprinkling using pulse sprinklers controlled from network pressure drop signals.

A known automated irrigation system includes a hydraulic ram, a discharge pipe, pulse sprinklers with shut-off members controlled by a pressure drop signal, and a command pulse generator I.

The disadvantage of such a system is the possibility of false triggering of the apparatus, due to the influence of the pulsed water supply by the hydro-ram into the discharge pipeline on the operation of the valve bodies of the apparatus and the generator.

Another well-known automated irrigation system includes an irrigation network with a pressure pipe connected to the input of a command pulse generator and pulse sprinklers with shut-off bodies 2.

The disadvantage of this system is its low efficiency.

due to the discharge of water from the pressure pipe when the pulse sprinklers are operating.

The purpose of the invention is to increase the efficiency of the system by ensuring the operation of pulse sprinklers without discharging water from the discharge pipe.

The goal is achieved by the fact that the system is equipped with an individual control circuit for the shut-off unit of each pulse sprinkler, with the output of the command pulse generator connected to the individual control circuit.

FIG. I shows a schematic diagram of the proposed de-arming pulse system; in fig. 2 - impulse sprinkler device.

Claims (2)

The impulse sprinkler system consists of a pressure-generating unit 1, for example, a pumping station, a discharge pipe 2, a network of process pipelines 3, impulse sprinkler units 4, an individual control circuit 5 of the shut-off parts of apparatus 4, a command signal generator 6, working in conjunction with the command unit 7 and including Membrane valve-distribution mechanism with a membrane 8 and a valve 9, rigidly connected to each other by a rod 10. Submembrane cavity 11 is connected with an air cavity of a water-carrying system tank 7 by pipe 12, and supramembrane cavity 13 is connected to the hydraulic part of the air tank of the same sprinkler by pipe 14. The cavity 15 (input) of the command signal generator 16 is connected to the pressure pipe 2, and cavity 17 (generator output) communicates with the individual circuit control 5 and with the atmosphere through fitting 18. A pulsed sprinkler consists of a water-air tank 19 with a restrictive arch 20 and an elastic membrane 21, a hydraulically controlled valve 22, a sprinkler Heaters 23. The upper cavity of the air-water tank is connected by the supply pipe 24 to the technological pipeline 3. The lower cavity is filled with air to the design pressure, which determines the lower threshold of operation of the pulse apparatus. The hydraulically controlled locking member 22 is connected by a pipeline 25 with an individual control circuit 5. The automated irrigation system works as follows. From the pressure generating unit 1, the pressurized water flows through the pressure pipeline 2 to the network of technological pipelines 3 and simultaneously via pipeline 16 to input 15 of the command signal generator 6. From input 15, through cavity 17, water enters the individual control circuit 5, then via pipeline 24 enters the locking body 22, and the latter closes the outlet opening of the pulse device. From the process line 3, through the supply line 24, water enters the upper cavity of the air-carrying tank and fills it, moving the elastic membrane 21 downward, additionally compressing the air beneath it. Similarly, all the pulse devices of the system, including the command device 7, are filled. The filling goes until the elastic membrane is placed on the restrictive roof 20. Since there is no further air compression, the command signal generator 6 does not rise in cavity 11, and in cavity 13 begins to increase rapidly, since this cavity is connected by pipeline 14 to the upper cavity of the air-water tank of the command pulse apparatus 7, in which the pressure continues to increase. The force from the side of the cavity 13 to the membrane 8 increases, and the latter moves higher, pulling the rod 10 and the valve 9 behind them. The valve 9 closes the channel between the cavities 15 and 17, simultaneously connecting the cavity 17 (generator output) through the fitting 18 with the atmosphere. The pressure in the individual control circuit rapidly decreases. The reduction in pressure in the individual control circuit is transmitted to the shut-off element 22, it opens, and water from the upper cavity of the air-water tank under pressure of compressed air is discharged through the sprinkler 23 to the irrigated area. After the shot of the command pulse device 7, the pressure in the cavity 13 of the command signal generator 6 decreases to the amount of the make-up pressure of the device, which is less than the air pressure from the cavity 11. The membrane 8 under the action of air pressure from the water tank moves up, returning the command signal generator 6 to its original position and the duty cycle is repeated. Thus, the proposed automated irrigation system allows to increase the efficiency of the system by ensuring the operation of pulsed sprinklers without discharging water from the discharge pipe. Claims of the invention Automated irrigation system comprising an irrigation network with a pressure pipe connected to the input of a command pulse generator and pulse sprinklers with shut-off bodies, characterized in that in order to increase the system's efficiency by ensuring that the pulse sprinklers operate without discharge of pressure water pipeline, the system is equipped with an individual control scheme for the shut-off device of each pulse sprinkler, Exit command pulse generator circuit connected to the individual control. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 376062, cl. A 01 G 25/16, 1971. 2. USSR author's certificate number 652930, cl. A 01 G 25/16, 1977 (prototype).