RU2316950C1 - Irrigation pipeline - Google Patents

Abstract

FIELD: equipment for irrigation of farm crops by drop irrigation process.

SUBSTANCE: irrigation pipeline has within its inner cavity elastic open insert overlapping water discharge openings. Openings are formed through lower part of pipeline, along arc of circle having diameter D equal to 3.3 d_p, where d_p is inner diameter of pipeline. Such construction enables embracement of nest of plant to be irrigated. Open insert is fixed within pipeline and has longitudinal and transverse channels at inner side of pipeline. Length of arcs of elastic insert makes 1/2 the length of circle of pipeline inner surface.

EFFECT: increased efficiency and uniform water distribution over land area under irrigation process, and increased yield.

2 cl, 4 dwg

Description

The invention relates to techniques for irrigation of crops using the drip method using flexible irrigation pipelines.

A water outlet of an irrigation pipeline is known, including a housing with a drain hole and a fastener connecting the housing to the pipeline, the housing being formed by two sidewalls connected by a vault consisting of a front horizontal part and a rear curved horizontal part smoothly conjugated with it directed outwardly, while the outlet hole of the housing is placed in it opposite the rear curvilinear part of the arch, and the fasteners are made in the form of a plate placed on the inside of the pipe water and connected to its last body by means of screws made flush, while the plate is equipped with a protrusion with an oblique cut located behind the inlet (SU 1501981 A1, 08.23.1989).

The disadvantages of this outlet are limited functionality, difficulty of installation and poor quality of irrigation.

A water outlet with a flexible pipe is also known, including an elastic casing installed in the wall and attached to the edges of the water outlet, one of which is bent into the pipe from the outside, the elastic casing is made like a tube (SU 378592 A1, 04/18/1973).

The disadvantages of the outlet are limited functionality, low reliability.

There is a known water outlet made in the form of a piston installed in an opening of a pipeline, provided with a porous element overlapping the pipeline opening and pressed against the piston, for example, by means of a rigid plate connected thereto (SU 471094 A1, 05.25.1975).

The disadvantages of this outlet are limited functionality, low operational reliability, lack of ability to control the water supply.

Known mobile irrigation pipeline having water outlets in the form of flexible reflective valves fixed on the outside of the pipeline above the water outlet openings, while the water outlets are equipped with flexible adjustable valves fixed on the inside of the pipeline on the same axis as the reflective valves, while all valves have a circular shape and installed with the possibility of independent rotation relative to their axes (SU 1818017 A1, 05/30/1993).

The disadvantages of the irrigation pipeline include low operational reliability, significant labor and time costs associated with the preparation of reflective valves, as well as flexible adjustable valves. In addition, the device does not have the ability to control the water supply during operation.

A well-known water outlet of the irrigation pipeline, comprising a corrugated pipe and a piston for reinforcing the hole, is provided with an elastic perforated membrane located under the pipe (SU 261015 A1, 01/06/1970).

The disadvantages of the described outlet include the rigid fastening of the membrane along the entire perimeter, which requires significant efforts for its deformation, and such efforts cannot be created in the pipeline due to the presence of perforation, therefore, it is impossible to obtain regulation of the water supply.

This outlet is accepted as the closest analogue.

The invention consists in the following.

The problem to which the claimed invention is directed, is to increase operational reliability, regulated water supply, improve the quality of irrigation and increase the area of humidification.

EFFECT: uniform distribution of water over irrigated area, increased yield.

The specified technical result is achieved in that in the irrigation pipe for drip irrigation systems, including the main part, having a wall closed along a cylindrical surface and water outlets, over which there is an elastic insert, according to the invention, the insert overlapping half the inner diameter is made open, has longitudinal and transverse grooves on the side of the water outlets, which are placed in the lower part of the pipe wall along an arc of a circle, while the insert is fixed th e stops in the pipeline.

The water outlets are made in a circular arc with a diameter D equal to 3.3 d _T , where d _T is the inner diameter of the pipeline.

The invention is illustrated by drawings, where in Fig.1 shows an irrigation pipeline with a cut along the axis of the outlet; figure 2 is a section aa in figure 1, with a local section; figure 3 is an elastic insert with grooves, a view from the side of the grooves; figure 4 is an end view of an elastic insert.

Information confirming the possibility of implementing the claimed invention are as follows.

Irrigation pipe 1 has an elastic open insert 2 in its inner cavity, overlapping water outlets 3, which are made in the lower part of the pipeline wall along a circular arc with a diameter D of 3.3 d _T , where d _T is the inner diameter of the pipeline to provide coverage for the nest of the plant to be watered .

Open insert 2 has grooves on the side of the inner surface of the pipeline, and the arc length of the elastic insert is 1/2 the circumference of the inner surface of the pipeline. On the water outlet side, the elastic insert has transverse 4 and longitudinal 5 grooves. Insert 2 is fixed in the pipeline with stops 6.

An irrigation pipeline with groundwater outlets works as follows.

At the beginning of the pipeline 1, the pressure is increased and the elastic open insert 2 is pressed against the inner surface of the pipeline with considerable force, while ensuring the passage of water to the water outlet 3 only through grooves 4, 5, and the grooves reduce the cross section.

As the pipeline lengthens, the pressure decreases due to local losses and along the length, respectively, the pressing force of the insert 2 to the inner surface of the pipeline decreases, which allows water to pass not only through the grooves, but also into the gap between the insert 2 and the inner surface of the irrigation pipeline.

This ensures a uniform supply of water through the water outlet along the entire length of the irrigation pipeline.

Water outlets 3, made along an arc of a circle, provide coverage of irrigated plants along the perimeter and uniform moistening of the root layer of the soil, which can significantly increase the yield of crops.

Claims (2)

1. Irrigation pipe equipped with water outlets, over which an elastic insert is located, characterized in that the insert overlapping half of the inner diameter is open, has longitudinal and transverse grooves from the water outlet, which are located in the lower part of the pipe wall along an arc of a circle, while the insert is fixed in the pipeline stops. 2. A conduit according to claim 1, characterized in that the water-discharge openings are made on a circular arc with a diameter D, equal 3,3d _m, where d _m - internal diameter of pipe.

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