SU1323651A1 - Water-distributing arrangement for closed-circuit irrigation network - Google Patents

Abstract

The invention relates to agriculture, namely to automated water distribution structures for irrigation systems. The purpose of the invention is to increase the reliability and simplify the design of the device. In the well 2 there are siphons made of sections of pipes 11 connected by diverting chambers 3 with irrigation pipes 7. The upper part of pipes 11 is blocked by a bonnet 12 equipped with a three-angle opening 15 and a vacuum tube 14 of the control system. The discharge chambers 3 are equipped with air ducts 4. When the water distribution device is working, water flows through the supply pipe 1, fills the well 2. When the upper level of the sump 12 is reached, water flows into the pipe 11, expels the air through the pipe 4, and the siphon is charged. When the water level in the well drops to the level of the hole 15, air enters the bonnet 12 and the siphon flow decreases to the amount of water entering the well 2 from the pipeline 1. The operation of the device is controlled by opening the closed vacuum tubes 14. 1Cp. f-ly. 2 Il. (Oh wji oz o o5 sd

Description

The invention relates to agriculture, in particular to automated water distribution structures for irrigation systems.

Tse: 1 of the invention is the improvement of operational reliability and the reinforcement of the structure.

FIG. 1 shows the aquatic device, plan; pas figs. 2 is a section .A-.A in FIG. one.

The device contains a supply pipe 1, a reinforced concrete well 2, inside which are dispensed siphons with water outlets with discharge chambers 3 and air tubes 4, a drain pipe 5 with a valve 6 that serves to empty the device, a drain n1, and irrigation pipelines 7 with irrigation micro hydrants 8 and the transport pipeline 9. To create the necessary pressure in the discharge of their pipelines x 7 and 9, the well 2 protrudes above the ground. A cabinet with a hydraulic programm device l (i) automatic control of water distribution and irrigation is fixed on the outside of the well.

SIFOPA-WATER PRODUCTS VYOLOLI I) 1 in VIEW (

1x straight lengths of asbestos-cement, pottery or other waterproof and non-deficient material II pipes vertically connected, the lower ends of which are connected through discharge chambers 3 with irrigation 7 and transported by pipelines 1. 9, and the upper ends are covered with hoods 12, made in as a pipe section, of a larger diameter, rc, which is ometrically connected to the lid 13 of the well 2. From above, all the hoods 12 with vacuum tubes 4 are connected to the hydraulic device 10 of the software 10 and on the lateral surface have triangular air intakes STI 15.

The hydraulic gfogram device 10 is connected by the intake pipe 16 to the internal cavity of the well 2, the drainage system with the tube 17 --- with the trans-pipe line 9.

The water distribution device works in the following way.

Water enters the well 2 through the coarse duct 1 and, filling it, pours evenly through the crests of all three siphons into the pipes 1 1, the discharge chambers 3 and further into the irrigation 7 and transporting 9 pipelines simultaneously removing air from the nodes of all hoods 12 in the discharge, discharge tube 4.

In the siphons of this design, when overflowing even a small consumption, there is an intensive suction of air from under the hoods, therefore the siphon, the vacuum control tube 14 of which is blocked from the access of atmospheric air, instantly (at 4-7 e}) turns on the full capacity. the well decreases sharply and there is a lack of water and the siphons, the vacuum control tubes 14 of which are opened, stop. The siphon does not turn off even at lower flow rates of water entering the device due to the presence of a triangular inlet At the openings of the bonnet 15. At lower flow rates, the water level in the well 2 drops to the top (point) of the triangular hole 15 through which air is allowed to flow under the hood of the siphon. The siphon capacity decreases and automatically balances the flow of water to the device and the outlet it through a working siphon. The water level in the well at the calculated and

The reduced flow rates of the working siphon are stabilized near the top mark of the triangular air inlet 15.

To change the direction of the water flow, open access of the atmospheric air to the vacuum siphon tube 14 and shut off the vacuum tube 14 of the necessary siphon. In this case, in the working siphon, a breakdown of the vacuum will occur, the siphon will out.

Hydraulic nogram device 10 has valves (not shown) that block access of atmospheric air to vacuum tubes 14 under the hoods of 12 polyline and transit siphons according to the program of the required distribution pattern. 1eni and irrigation on the irrigation system specified by the system operator.

To empty the device, it is sufficient to open the valve b. The water under the liariopOM in well 2, through the drain pipe 5 will overflow from the water intake chamber of well 2 into the drainage center; the throat chamber 3 and through the irrigation pipeline 7 will flow down the field. After drinking level 1; the water in the tank below the valve 6 it with the drain pipe 5 works like a siphon and sucks the rest of the water into the irrigation pipe.

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Claims (2)

1. A water distribution device for a closed irrigation network, containing a well with SUMMER and discharging irrigation and transporting 1, pipelines 50, water outlets controlled by an irrigation pipe connected to siphon pipes, which are separate. , in order to improve operational reliability and simplify the design, the siphons of the upper pollen are in the form of vertically fixed straight pipe segments, the lower ends of which are supplied with 1 discharge chamber communicated with trans porting and queuing pipelines, and the top ones are covered with hoods, made in the form of a section of a plugged pipe larger than the diameter of the siphon pipe, of diameter, while the crests of all the siphons located in the well are flush and the outlet w, the chambers are equipped with air tubes. 2. A device according to claim I, characterized in that, in order to prevent spontaneous switching off of the siphons and stabilization of the water level in the well when the flow rate decreases, a triangular opening is made at the side surface of each hood at the lower edge.