SU967411A1 - Underground irrigation system - Google Patents

Description

(54) SUBMITTED IRRIGATION SYSTEM

one

The invention relates to agricultural land reclamation and can be used for subsurface irrigation.

A subsoil irrigation system is known that includes a water supply source, field distributors, sectional head distributors, water supply controllers, humidifiers and feedback pipelines 1.

However, in this system, especially when irrigation with sewage, the internal surfaces of the heaters and injectors are silted, and even moisture is not provided.

Another subsoil irrigation system is also known, including a source, field distributors connected to the head and end distributors via water supply controllers, feedback pipelines, shut-off devices connected by lever to the hydro-relay connected to the water source, and moisturizers 2.

The disadvantage of the system lies in the fact that it can only be used with certain geodesic gradients, since

increased water flow supplied from the end of the humidifiers when the slopes are more than optimal, which can cause soil erosion in this area of humidifiers.

The purpose of the invention is to provide reliable two-way pulsed water supply at an optimal ratio of heads and time, to achieve uniform soil moistening along the length of the humidifier at different geodetic slopes of the area and

-10 elimination of soil erosion.

The goal is achieved by the fact that in the system each field distributor is connected to a water source by two supply lines, on which shut-off organs are installed, and the hydrorelay is connected to

15 is provided with a water source with a vertically arranged supply tube and is made in the form of a chamber with inlet and drain holes mounted movably / on the supply tube, while field distributors are equipped at the junction with the supply lines with a choke valve.

FIG. 1 shows the proposed system, a general view; in fig. 2 - feed

pipelines equipped with a hydro relay and flow control.

The subsurface irrigation system includes a water supply source 1, a supply network consisting of a main supply pipe 2 and an additional supply pipe 3 for supplying water to field distributors 4. Taps 5 are installed to create the necessary pressure in supply lines 2 and 3; the opening of which is controlled by means of pressure gauges 6. The frequency of operation of the supply pipes 2 and 3 is carried out with the help of a hydro relay 7, consisting of a supply pipe 8, a working chamber 9 with a drain hole 10 and a pipe 11 providing for closing the opening in the tube 8 of the lever system 12, which acts on the regulators 13 of the supply pipes 2 and 3. To prevent water from one pipeline to another, they are equipped with a choke 14. Alternating operation of the head 15 and end 16 distributors This is done through feedback pipes 17 and 18, which respectively act on the regulators 19 of the head 15 or end 16 distributors, from which water enters the humidifiers 20.

The subsurface irrigation system operates as follows.

From the water supply source 1, water flows through the taps 5 with a defined pressure, which is monitored with the help of pressure gauges 6, primary 2 or additional 3 supply pipes. At the same time, the water enters through the supply tube 8 into the working chamber 9 of the hydrorelay 7, draining through the opening 10. The lever system 12 is in the position at which the hydraulic regulator 13 blocks the additional pipeline 3. The water entering through the main pipeline 2 presses throttle clap 14, shut off the pipeline 3 from the field distributor 4, providing it with power only from the main pipeline. At the same time, water from the main conduit 2 is supplied to the feedback conduit 17, acting on the regulator 19, allowing water to flow into the main distributors 15 and from them to the humidifiers 20.

The water supply and drain hole of the hydrorelay 7 is calibrated so that after the required time has elapsed, the water level in the working chamber 9 reaches a position in which the lever system 12 is out of balance, ensuring that the water flow to the main pipeline 2 is blocked by the regulator 13 and access water into the additional pipeline 3 and the feedback pipeline 18, which acts on the regulator 19 of the end distributors 16. The regulators act to ensure that water flows from the field distributor 4 to the end the distributors 16, and of them into the humidifiers 20. At the same time, the water flow raises the throttle clap 14 up, blocking the access of water to the main pipeline 2 from the field distributor 4, the hydraulic communication with the main distributors 15 is interrupted, and the water supply to them stops.

After a certain period of time, the working chamber 9 of the hydrorelay 7 is freed from water, since in the lower position the supply pipe 8 is blocked by a valve 11. The lever system 12 is balanced, ensuring by means of the regulators 13 that the additional supply pipe is blocked and the main supply pipe 2 is opened the water enters the field distributor 4, pressing the clapper 14, excluding the access of water to the additional supply pipe 3. During this time, the water enters the pipeline 17 of inverse communication exposure to the controller 19 that provides access to water head valves 15 and 20 humectants.

The alternating pulse water supply cycle is repeated until the soil is moistened to the lowest capacity. When the smallest capacity is reached, the taps 5 shut off and the water supply stops.

The proposed subsoil irrigation system allows to automate the process of alternating pulsed water supply to humidifiers with a different combination of heads and time, which expands the range of application of subsoil irrigation systems

Depending on the slope of the area.

Claims (2)

1. USSR author's certificate number 429784, cl. A 01 G 25/06, 1972. 2. USSR author's certificate JVb 722521, Cl. A 01 G 25/06, 1978 (prototype). r