SU1344285A1 - Method of water distribution in rice irrigation system - Google Patents

Abstract

The invention relates to agriculture and can be used on automated rice irrigation systems. The purpose of the invention is to improve the quality of irrigation while saving irrigation water. Way iTCD AND water distribution includes the flow of a given water flow rate, its proportional distribution between the economic, distribution channels and lower units and the correction of the flow rate by the forecast error, which is accumulated in the reserve volumes of the end sections of the economic canals & 2. According to the forecasts water allocators adjust the flow rate controllers to supply the estimated flow rates by the head structure and water outlets 6 and 3. The outlets 9 select the flow rate required for the rice checks commanded by them. Unclaimed water is discharged downstream through the blocking structures 4. When the latter overflow, the excess flow is redistributed between the checks commanded by these sections. 2 Il. g (L 00 4 4 y 00 ate

Description

one

The invention relates to agriculture and can be used on automated rice irrigation systems.

The purpose of the invention is to improve the quality of irrigation while saving irrigation water.

On -fig. 1 shows a flow chart of the method implementation; Fig. 2 shows a section of the end section of the home channel.

The system contains main channel 1, domestic channels 2 with water outlets 3 and blocking structures 4 with upstream level controls. Distribution channels 5 are connected to household 2 via outlets 6. Main channel 1 and outlets 3 are equipped with flow controllers, and side outlets 6 and all hydraulic structures of distribution channels 5, kart irrigators 7 and rice checks 8 that are under command , with the exception of the water outlets 9 at the end sections of the domestic canals 2 and subcommaid hydraulic outlets to these outlets, which are equipped with combined water distribution controllers. To control the transformation of the free surface curve, the ends of the home channels 2 are equipped with level sensors 10. The system also includes an agrometeorological station 11,

All upstream flow and water level controllers are equipped with setpoint change devices.

The system also contains interconnected control computer complexes of the upper level 12 and 13 local subsystems connected by the Yi telemechanics channel with devices for changing the settings of the level and flow regulators on the main, economic and distribution channels, respectively.

The method is implemented as follows.

According to the forecast of water consumption calculated by the control computer complexes of 13. local subsystems according to the data of agro station, 11, the control computer of the upper level 12 through the telemechanics channels through the mouth

42852

The settings change settings adjusts the flow controllers for supplying the estimated costs to the main structure and water outlets 6.

Control computer systems of 13 local subsystems in a similar way set up flow rate controllers for supplying calculation

) Expenditures to household canals 2. Water outlets 9 from canal 2 carry out a selection of the flow rate corresponding to the actual needs of the rice checks received from the teams. Unclaimed

15 by the outlets 9, the water is discharged downstream through the blocking structures 4, in front of which constant levels are provided with level regulators. In this way,

A 20 error in the forecast of water consumption, corresponding to the area of rice irrigation system, commanded by outlets 9, is transported to the end section of the economic branch 2. Water outlets 9 pass the imbalance of flow between water supply and actual water consumption. When the end sections of the channels 2 are overflowed, the controllers for burning out the living structures 4 let the surplus consumption pass and redistribute them between checks suspended from these areas.

35

Claims (1)

Invention Formula The method of water distribution in the rice irrigation system, including the flow of a given water flow, its proportional distribution between the economic and distribution channels and lower units and the correction of the flow rate by the forecast error accumulated in the reserve volumes emach, carried out after system transition time in steady state, characterized in that, in order to improve the quality of irrigation while saving irrigation water, water distribution in the lower parts of the system is carried out downstream, the forecast error is accumulated in the reserve volumes of the end sections of the domestic channels and the magnitude of the forecast error adjust consumption blocking structures of the domestic canal and water supply to the system. 2