SU1523125A1 - Automated system for controlling concentrated watering - Google Patents

Abstract

The invention relates to agriculture and can be used in land reclamation with automated furrow irrigation. The purpose of the invention is to improve the quality of irrigation, labor productivity during irrigation, as well as reduce water loss to surface discharge. At the beginning of the discharge pipeline 1 of the irrigation network with irrigation pipes connected to the pressure pipeline 1, a hydraulic valve 2 and a sensor 14 for controlling the filling of the pressure pipeline with water are installed, connected to the central control unit 8. The central control unit 8 is also connected by a two-wire communication line 9- 10 with series-connected switching units 11 remote switches, and the outlets with valves of the control elements of the hydraulic actuator of the valve 7 at the inlet of the lower irrigation pipeline. An additional control unit 15 of a hydraulically controlled valve 7 is installed on the lower irrigation pipeline. Before irrigation, the central control unit 8 switches the hydraulically controlled valve 2 at the inlet of the pressure pipeline 1 to fill the irrigation network, then closes it for a specified time, opens it and monitors the time to refill the pipeline 1. In the event of leaks in the irrigation network, the central control unit 8 switches the hydraulically controlled valve 2 to close. In the case of a serviceable irrigation network, the central control unit 8 supplies a positive polarity voltage to the communication line, which passes the windings of the electro-relay of the outlets valve drive control elements 13 to the first groups of irrigation plots. Similarly, irrigation of all groups of furrows is performed. By applying a negative polarity pulse to the communication line, the remote switches return to their original state. 2 Il.

Description

Pipeline 1 for filling the irrigation network, then closes it for a specified time, opens it up and controls the time for refilling Pipeline 1. In the event of leaks in the irrigation network, the central control unit 8 switches the hydraulically controlled valve 2 to close. In the case of a serviceable irrigation network, the central control unit 8 delivers to the line

connection, the positive polarity of the voltage that passes through the windings of the electro-relay of the outlets control valve actuators 13 to the first groups of irrigation plots. Similarly, irrigation of all groups of furrows is performed. By applying a negative polarity pulse to the communication line, the remote switches return to their original state. 2 Il.

The invention relates to agriculture and can be used in land reclamation with automated furrow irrigation.

The purpose of the invention is to improve the quality of irrigation, reduce water loss to surface discharge and increase productivity.

FIG. 1 shows a block diagram of an automated concentrated irrigation control system; in fig. 2 is a block diagram of a central control unit.

The irrigation network contains a pressure pipe 1, a valve 2 at the inlet of a pressure pipe, irrigation pipes 3 with valves 4 at the entrance, water outlets 5 with controllable valves, collapsible surface irrigation pipelines or water distribution single-breasted grooves 6, a hydraulic control valve 7 at the entrance of the irrigation pipe , central control unit 8, common communication line 9, advancement line 10, switching unit II of a remote switch connected in series by a advancement line through normally open e contacts 12 of remote switches of blocks II, as well as through a normally closed contact of a remote switch of blocks 11 with windings of an electro-relay 13 controlling water outlets to groups of furrows of irrigated areas and the last group of electro-hydro relays through a normally closed contact 12 of the last block 11, and blocks 11 contain remote switches and a switch, sensor 14 for monitoring the filling of the discharge line with water.

The additional valve control unit 15 at the inlet of the lower irrigation pipeline contains a power source, a controller, an analog-digital converter, electronic keys, an electric pressure gauge 16, a water level sensor 17 at the end of the lower section furrows, installed in a transverse groove across the furrows at the end of the section, The first valve 18 at the inlet of the diaphragm actuator of the valve 7 and the valve 19. The central control unit 8 contains a power supply 20, a controller 21, the output of which is connected to the decoder 22 of the controller com mand, ne The primary output of which is connected via a current-limiting resistance 23 to the base of the key transistor 24, the collector of which is connected to the first winding output of the electro-relay 25 controlling the opening and closing

0 gate valves 2 of the pressure pipe 1. The second output of the winding of the electro-relay 25 is connected to the power supply 20. The second output of the decoder 22 is connected via a current-limiting resistance 26 to the base of the key transistor 27, the collector of which is connected to the winding of the electro-relay 28 in the drainage discharge circuit from the hydraulic actuator of the valve 2, which controls the stop of the valve 2 in any position. The third output of the decoder 22

0 is connected via a current-limiting resistance 29 to the base of the key transistor 30, which controls the supply of a positive polarity voltage to the communication line 10. The fourth output of the decoder 22 is connected via a current limiting resistance 31 to the base of the key transistor 32, which controls the supply of negative polarity to the line. The system works as follows. Before irrigation, the central control unit switches the valve 2

0 to open and fill the irrigation network. After filling, it closes the valve 2 for a predetermined time and then opens it again and controls the time for filling the discharge pipe by

The sensor responds to the sensor 14. If the refill time of the irrigation network exceeds the permissible limit, then the magnitude of the leaks is large and there are breakouts or faulty shut-off bodies in the irrigation network. In this case, block 8 switches the valve 2 to close. When the irrigation network is operational, unit 8 switches the valve 2 to full opening. Then, the central control unit 8 supplies to the line 10 a positive polarity voltage, which is fed to the input of the first unit 11 and through the normally closed contact 12 of the remote switch of the first unit 11 to the windings

the next cycle of watering groups furrows or stops watering.

Claims (1)

Claims of the invention An automated concentrated irrigation control system comprising a pressure pipe, irrigation pipes with water outlets, connected to a pressure pipe, each of which is arranged to irrigate the respective sections. the first group of electro-relay 13. Water-located in the same river, the central outlets in the first groups of furrows of the irrigation control unit, connected by a communication line from the sections, open and water is supplied by control elements of the valve actuators to the furrows. The block 15, according to the signal of the manometer-outlets of each river of irrigation pipes 16, detects a decrease in pressure in the pipelines, and each of the elements in the lower irrigation pipelines of the valve drive control is controlled by the signal from the sensor of the 17th discharge in the form of electrohydraulic time of running water jets until the end of the bo-relay, characterized in that, for the purpose of distribution, then switches valves 18 and 19 to improve the quality of irrigation, reducing to cover the valve 7 to a given water loss to the surface release of pressure decrease in the lower floor In addition to the increase in labor productivity, the pipeline and if, through a given high-20 system, the water level in the end-sleeves is equipped with hydraulically controlled time delays, each of which is installed, the furrows do not decrease to the permissible limit at the inlet of the irrigation pipeline of each, in the near-horizon section, two switching units cover the gate valve 7. Thus, by the method of remote switches, the sequential approximation sensor determines -25 monitoring the filling of the pressure pipe with water to the optimum level Covering the gate with an electric manometer, a sensor, in which the water discharge at the end of the water level at the end of the furrows is minimal. In the process of watering the first group site, two hydraulic valves, the output of the furrows, the unit 15 controls the discharge of which is connected with the water inlet and produces a lowering similar to the actuator of the hydraulically controlled valve and remembers the process of adjusting the irrigation pipeline .30 After finishing the irrigation of the first group with the inlet gate control unit The distribution unit 8 removes the voltage supply to the communication line 10, the unit And switches the remote switch, the water supply to the first groups of furrows of the irrigated areas is stopped. Then, unit 8 again supplies voltage to line 10, which passes through the normally closed contact 1 of the remote switch of the first unit 11 and is fed to the input of the second unit 11 and through the normally closed contact of this unit to the windings of the outlets drive electrohydraulic switches to the second groups of irrigation plots. Block 15 as when watering the first group of furrows the lower irrigation pipeline, the first group of inputs of which is connected to an electric pressure gauge, and the second group - with a water level sensor, and the outputs are connected to the control inputs of the first and second hydrovalves, while the hydraulic input of the latter is connected to the pressure pipeline in the first position, with the entrance of the first hydrovalve, before and in the second position, the inlet of the first hydraulic valve is connected to the drain channel of the second hydraulic valve; in addition, the inlet of the central control unit is connected to the sensor for monitoring the filling of the pressure pipe with water, the hydraulic outlet is controls the rise and then slide down 45 with a valve actuator at the pressure inlet water pressure in the irrigation piping, opens the valve and then, according to the stored program, closes the valve to minimize water loss during discharge. After watering all groups of furrows block 8 pipeline, and the electrical output through a two-wire communication line, one wire of which is common, and in the second two groups of open contacts of the switching units are installed in series sends to the line 10 a voltage pulse of 50 remote switches - with a negative-polarity polarity, which supplies the switching of the remote switch to the inputs of all the units 11. A clerk and by means of normally closed the passage of the impulse the remote re-contacts of each switching unit - with the switches, due to the energy of the accumulating windings of the electro-relay of the control of the capacitors of the blocks 11, are switched by the input of the outlets to the groups initial state. Block 8 carries out furrows irrigated plots. the next cycle of watering groups furrows or stops watering. Claims of the invention An automated concentrated irrigation control system comprising a pressure pipe, irrigation pipes with water outlets, connected to a pressure pipe, each of which is arranged to irrigate the respective sections. located in the same floor, the central control unit connected by a communication line to the control elements of the valve actuators of the outlets of each river of irrigation pipes, each of the control elements of the valve actuators of the water outlets, is made in the form of to improve the quality of irrigation, reduce water losses for surface discharge and increase labor productivity, the system is equipped with hydraulically controlled back valves, each of which is installed at the entrance to the irrigation pipeline at each section, two switching units of remote switches, a sensor for monitoring the filling of water in the discharge pipeline, an electric manometer, a water level sensor at the end of the furrows of the lower section, two hydraulic valves, the output of the first of which is connected to the actuator of a hydraulically controlled valve lower irrigation pipeline, an additional valve control unit at the inlet the lower irrigation pipeline, the first group of inputs of which is connected to an electric pressure gauge, and the second group - with a water level sensor, and the outputs are connected to the control inputs of the first and second hydraulic valves, while the hydraulic input of the latter is connected to the pressure pipeline in the first position, with the entrance of the first hydrovalve, In the second position, the inlet of the first hydraulic valve is connected to the drain channel of the second hydraulic valve; in addition, the inlet of the central control unit is connected to the sensor for monitoring the filling of the pressure pipe with water, the hydraulic outlet is pipeline, and the electrical output through a two-wire communication line, one wire of which is common, and in the second two groups of open contacts of the switching units are installed in series  remote switches - with BL.