RU2332840C1 - Self-regulating water-outlet for flexible irrigation pipeline - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: self-regulating water outlet for a flexible irrigation pipeline includes a closing element attached to the wall of the pipeline by means of the perforated diaphragm. On a wall of the pipeline on the butt-joined seam there is a flow regulator, which includes a case with the water outlet opening. In the case is fixed a springy-elastic perforated diaphragm, fixed by two ends to the walls of the case and located by two other ends with minimal clearance from the walls of the cases. At the centre of the diaphragm there is a corrugated protrusion to which is fixed a conical valve-regulator, which has height, providing the possibility of flow variation from the minimum up to the maximum value. The area of the perforated holes in the diaphragm is meant for the passage of the maximum flow through the water-outlet.

EFFECT: simplification of the design and guarantee of the set discharge throughout the entire length of the irrigation pipeline.

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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, 08.23.89).

Disadvantages of the water outlet are limited functionality, difficulty of installation, poor quality of irrigation.

A water outlet with a flexible pipeline is 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 pipeline from the outside, the elastic casing is made in the shape of a tube. (SU 378592 A1, 04/18/1973).

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

Known water outlet, made in the form of a piston installed in a hole in the pipeline, equipped with a porous element that overlaps the pipeline hole and pressed against the piston, for example, using a rigid plate connected with it. (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 valve for sprinkling, etc. devices with a housing and an elastic locking element overlapping the holes in the saddle, on which a central protrusion is formed, and an elastic elastic locking element in the form of a flat plate is attached to it, forming gaps with the walls of the housing. (SU 360498 A1, 01/05/1973).

The disadvantages of the valve include limited functionality, the lack of the possibility of a regulated water supply, depending on the actual pressure.

A water outlet of an irrigation pipeline is known, including a corrugated pipe and a piston for reinforcing the hole, while it is equipped with an elastic perforated membrane located under the pipe. (SU 261015 A1, 05/12/1970).

The disadvantages of the outlet include the difficulty of maintaining a given flow rate, since significant pressure is required to overcome the resistance of the membrane fixed in the piston along its entire perimeter. In addition, the movement of the corrugated pipe requires manual adjustment, which greatly complicates the operating conditions and reduces the reliability of the outlet.

Known exhaust valve to a flexible supply pipe, including a locking element attached to the inner walls of the pipeline and opening inside the pipeline, while the locking element is made of elastic and attached to the walls of the pipeline by perforated along the edges of the diaphragm. (SU 394493 A1, 01/16/1974).

The disadvantages of the water outlet valve are the complexity of the design when fixing the perforated diaphragm to the pipe walls, the low probability of an adjustable water supply, and since the diaphragm is fixed to the pipe walls along the entire perimeter, the locking element can only be moved if the diaphragm walls break. In addition, flow control with a flat shut-off element is difficult.

This valve is accepted as the closest analogue.

The invention consists in the following.

The problem to which the invention is directed, is to increase operational reliability and to ensure a regulated water supply.

The technical result achieved by the implementation of this invention is to provide the ability to supply a given flow rate along the entire length of the irrigation pipeline and to simplify the design.

The specified technical result is achieved in that in a self-regulating water outlet of a flexible irrigation pipe, including a locking element attached to the pipe wall by means of a perforated diaphragm, according to the invention, a flow regulator is provided on the pipe wall in the butt weld, including a body with a water outlet, in which an elastic-elastic perforated diaphragm is installed fixed by two ends to the walls of the housing and located by two other ends with a minimum clearance from the walls of the housing, while in the center of the diaphragm a corrugated protrusion is made, to which a cone regulator valve is fixed, having a height that allows the flow rate to change from minimum to maximum value, and the area of the perforated holes in the diaphragm is designed to allow the maximum flow through the outlet.

The invention is illustrated by drawings, where figure 1 shows a longitudinal section of an irrigation pipeline with a water outlet with a minimum pressure in the pipeline; figure 2 is the same at maximum pressure in the pipeline; figure 3 is a section aa in figure 1.

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

The self-regulating water outlet includes a wall 1 of the irrigation pipeline with one water outlet 2 and a locking element. In the connecting seam 3 of the pipeline 1, a housing 4 is made for a cone valve-regulator 5 mounted on a perforated diaphragm 6. Above the cone valve-regulator 5 in the body 4 there is a water outlet 7.

The perforated diaphragm 6 is made of an elastic material in the form of corrugations and is fixed with two ends to the walls of the housing 4. Two other ends are placed in the housing 4 with a minimum clearance from its walls. The distance from the diaphragm 6 to the water outlet 7 in the housing 4, the dimensions of the regulator valve 5 and the diameter of the water outlet correspond to the possibility of passing a predetermined flow rate through the water outlet 7 depending on the pressure in the irrigation pipe 1. The area of the perforated openings of the diaphragm 6 is designed to allow maximum flow through water outlet.

The outlet works as follows.

With a minimum pressure in the irrigation pipe (see Fig. 1), the diaphragm 6 is in a free state, and the control valve 5 is fixed in its outlet with its apex. With this position of the valve 5, it is possible to pass the maximum flow through the outlet.

With increased pressure, under the action of which the diaphragm 6 is deformed (figure 2), the control valve 5 enters the water outlet 7, reducing its live section, which reduces the flow rate through the water outlet.

, гдеThe flow rate Q through the outlet depends on the pressure N according to the equation:

where

μ - flow coefficient (μ≈0.62);

ω is the living cross-sectional area of the water outlet;

g is the acceleration of gravity.

Thus, with an increase in pressure H in the pipeline, the living cross-sectional area will decrease with the help of a control valve 5, and with a decrease in pressure H, the living cross-sectional area will increase, while the flow through the outlet will be constant.

Claims (1)

A self-regulating water outlet of a flexible irrigation pipe, including a locking element attached to the pipe wall by means of a perforated diaphragm, characterized in that a flow regulator is provided on the pipe wall in the butt joint, including a body with a water outlet, in which an elastic resilient perforated diaphragm is mounted, fixed at both ends to the walls case and located at two other ends with a minimum clearance from the case walls, while a corrugation is made in the center of the diaphragm th e projection to which is secured a tapered valve-regulator having a height that ensures the possibility of changing the flow from a minimum to a maximum value, and the area of the perforations in the diaphragm is designed to pass the maximum flow rate through overflow.

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