SU882485A1 - Water-controlling device for closed system - Google Patents

Description

The invention relates to agriculture, namely to irrigation devices, and can be used for water distribution in closed irrigation systems.

A device for water distribution in closed irrigation systems is known, which includes hydraulic or electric gate valves, which are remotely controlled via communication line 1.

The disadvantages of this device are complexity and low reliability. In addition, the device is subject to silting and clogging, and the presence of cable power lines makes the design expensive.

It is also known a water distribution device that includes a well with a partition, equipped with a transit siphon, a drainage nozzle, orifices located at a predetermined height with irrigation pipes attached to them, the transit siphon on the bonnet having an air inlet with a locking device 2.

A disadvantage of the known device is the ability to work only in two modes, “VK tyucheno. and "Disabled when

which water enters either in transit or in irrigation pipelines, which impairs the quality of irrigation. If there are two or more irrigation pipelines in the device, the water in them enters at the same time as the device does not provide for their sequential activation. The purpose of the invention is to improve the quality of water distribution by adjusting and measuring the flow rate, simplifying the charging of siphon outlets.

The goal is achieved by the fact that the charging device of the siphons of the outlets is equipped with nozzles with a remotely controlled air inlet valve and a level sensor with a water metering wall, and the input

The t5 walls of the siphon pipes are partitions and walls of the well, the initial sections of the side walls of the well serve as crests of siphon outlets and run above the retaining partition of the well, and the transit siphon is provided with regulating and charging tubes connecting its internal cavity respectively with the well and with the internal cavity siphon outlets.

Moreover, the emulation tube of the transit siphon is installed at the mark of the required level of oxen in front of the siphon outlets. and the area of the charging section of the charging tube is 8–12 times smaller than the area of the siphon suction connections.

FIG. I shows the device in plan; in fig. 2 is a section A-L in FIG. one.

The device comprises a pressure chamber 1, a transit siphon 2, a transit chamber 3, a siphon water outlet 4, a discharge chamber 5, a supply pipe 6 of the conveying pipeline, and a discharge pipe 7, pipes 8 and 9 of the distribution pipelines, and all the components can be performed in the form of a single monolithic or precast concrete or reinforced concrete structure, as well as other non-deficient materials.

Pressure chamber I is a common supply well for siphons with irrigation water, which is limited along the perimeter by walls 10 and partition 11. The latter is at the same time a drainage ridge of siphon 2, and the initial portions of the side walls 12 of pressure chamber 1 are drain webs of siphon water outlets 4, which arranged at the same height and slightly higher than the top of the partition P.

The transit chamber 3 and the discharge chambers 5 are structurally similar and are a continuation of the pressure chamber 1 to which they are connected by means of a siphon 2 and a siphon outlet, 4, each of which is divided into two sections by a water meter 13. The transit siphon 2 is equipped with a septum 14 by adjusting the nozzle 15, which is the upstream level regulator. Through the charging pipes 16, air is sucked from the siphon outlets 4, which are individually fitted with air inlets 17, a control valve 18 to change the value from the air inlet area, and the position of the valve 18 can be changed either manually or via the remote control channels 19. In order to control the water flow in the device, the transit 3 and outgoing 5 chambers are equipped with rails 20 installed in front of the water-metering walls 13, and level sensors 21 can be installed in automated irrigation systems.

Nozzles 6–9 serve to conveniently interface the device with the inlet and outlet pipelines.

The device works as follows.

With the air inlets 17 closed, the flow of water to the device through the nozzle 6, the level in the pressure chamber 1, grows until water flows through the partition 11 into the transit chamber 3. Then the water enters the outlet nozzle 7. passed from the top of the water meter 13. After a certain time, the transit siphon 2 is put into operation at full capacity, since the water flow passing through it brings the air that is before it into the transit chamber 3. As a result, a vacuum is created under the hood of the siphon 2, under the action of which, through the charging pipes 16, air is sucked out of the siphon outlets 4, which ensures their inclusion into operation at full capacity. In case the water consumption for transit remains less than the estimated capacity of the siphon 2, the latter switches to stabilizing the level in the pressure chamber I at a height corresponding to the position of the regulating pipe 15, through which the air from the atmosphere flows into the siphon 2 and by reducing the vacuum under the hood reduces the flow through the siphon 2. Thus, the siphon outlets operate at full performance of the fi position of the water level in the pressure chamber 1 at a mark close to the axis of the nozzle 15, while transit is provided by the post Chilling the remaining estimated water flow. When receiving water flow through the pipe 6, the inlet area of the regulating pipe 5 is reduced by increasing its water level in chamber 1, and the air flow to the siphon 2 is reduced, as a result of which the water flow is increased relative to the initial by the amount of growth from nozzle 6.

When regulating the flow of water in the device, the air inlet area of the nozzle 17 is changed by means of valve 18, as a result of which a corresponding flow of air flows under the hood of the siphon outlet 4 from the atmosphere, which reduces the flow of water to the outlet, which can be directed either to transit or to the adjacent another siphon outlet 4 with appropriate control of the position of the valve 18 on it.

Thus, by controlling the position of the valves 18 manually or through the remote control channels 19, it is possible to regulate the flow of water for transit of distribution pipelines using the device, providing control over the flow rate of the rails 20 and using the sensors 21 of the water level position, depending on the flow rate water levels in front of the gauge walls 13.

Claims (2)

If it is necessary to shut off the siphon outlet 4, the valve 18 is set to a position in which the air inlet pipe 17 is fully open, but this has practically no effect on the operation of the transit siphon 2, since the charging pipe 16 has a significantly smaller area than the pipe 17 (for example, the cross section of the pipe 16 can be selected at the rate of 10% of the area of the pipe 17). For the subsequent switching on of the same siphon outlet 4 by valve 18, the air inlet pipe 17 is completely blocked, and after the charging time, usually 2-3 minutes, the valve is set to a position that corresponds to the passage of the required water flow. It is necessary to note the uniqueness of the dependence of the flow rate of the siphon outlet 4 on the position of the valve 18, which is ensured by stabilizing the level of water in the pressure chamber 1 at an adjustable elevation. The use of the proposed device on a closed irrigation network will simplify the water distribution and measurement of water flow, which in turn will increase productivity and working conditions. This ensures the use of the device in automated irrigation systems. Claim 1. Water-regulating device for a closed network, including a well with retaining and side partitions and a transit siphon with a water-metering wall and an adjustable air inlet pipe, installed on the conveying pipeline in series of outlets, made in the form of siphons with a charger, characterized in that , in order to improve the quality of water distribution by adjusting and measuring flow, the charging device of the discharge tapes is equipped with branch pipes with remote a guided air inlet valve and a level sensor with a water metering wall, the inlet walls of the siphon pipes are partitions and walls of the well, the initial sections of the side walls of the well serve as ridges of the siphon outlets and are made above the retaining wall of the well, and the transit siphon is equipped with regulating and charging pipes its internal cavity, respectively, with the well and with the internal cavity of the siphon outlets. 2. The device according to claim 1, characterized in that, in order to simplify the charging of the siphon outlets, the transit siphon control tube is installed at the mark of the required water level before the siphon outlets, and the charge tube cross section area is 8-12 times smaller than the nozzle area siphon outlets. Sources of information taken into account in the examination 1. GM Zyulikov. Closed irrigation systems. M., “Kolos, 1966, p. 10-12. 2. USSR author's certificate number 648168, cl. A 01 G 25/00, 1979. DG T FIG. I