SU362895A1 - WATER LEVEL REGULATORY SYSTEM IN THE IRRIGATION CHANNEL - Google Patents

Description

one

The invention relates to the field of water management and relates to a system for regulating the level of water in an irrigation canal.

Control systems are known, including the outflow shutter, the retaining structures shutters, each of which has a drive, and an auto-regulator installed between each pair of adjacent shutters of the supporting structures, connected to the level sensor and the driving gear of the supporting structure.

However, the disadvantage of the known systems is the large magnitude of the delays, the dynamic dynamics in the water supply and the small area of work stability.

The aim of the invention is to reduce the adjustment time in the system.

This is achieved by the fact that the position sensors of the retaining structures and water outlets are connected to the input of the autoregulator, and the outlet of the autoregulator is connected to a drive of one of the valves of the supporting structures.

The drawing shows schematically the proposed system.

The water level regulation system in the irrigation canal includes valves at retaining structures, gate 2 outlets and automatic control 3 located between each broom of adjacent gates of supporting structures. The input of the auto regulator is connected by a circuit 4 to the water level sensor 5, a circuit 6 to the outflow gate position sensor 7 and 5 and 9 circuits to the 10 and 11 position sensors of the supporting structures. The outlet of the regulator is connected to the drive of the shutter of the upper retaining structure. The shutter / motor is controlled by

command of the autoregulator 3, which receives two kinds of signals. The deviation signals from the water level sensor 5 are received through circuit 4, and the disturbance signals are received through circuit 6 from the water outlet plug 2 through the gate position sensor 7 and along chains 5 and 9 from the sensors 10 and the paddle / lower and upstream supporting constructions.

Deviation signals and perturbation signals are added up, and through the autoregulator a

control command on the control gate / overhead retaining structure.

At the moment of changing the opening of the shutter 2, the autoregulator 3 is fed through circuit 6 from the sensor 7 of the shutter position 2 a disturbance signal for a short period of time (due to the small constant shutter time, the autoregulator receives the full magnitude of this disturbance) and while level

The water in the sensor zone 5 has not yet changed as a result of the disturbance in question (displacement of the gate 2) and the signal for deviation in circuit 4 is still zero.

As a result, the adjustment time is significantly reduced, since the control command corresponding to the total value of the disturbance is formed in a short period of time, without affecting the delay and inertia of the channel section.

If there is a residual level deviation from previous disturbances, when the water level sensor 5 has an initial signal at the output and a new disturbance arises, for example, from gate 2, detected by the gate position sensor 7, the autoregulator sums the signals from the gate position sensors and the sensor water level, and issues the appropriate control command to the electric actuator of the upstream valve. In turn, when the shutter is moved (through the sensor 10, the shutter position along circuit 8 and autoregulator 3, a signal is transmitted to the subsequent latching shutter, etc.

In this way, accelerated feedback is implemented in the cascade auto-regulation system from the point of origin of the disturbance to the main structure, and the system itself operates in a stable and economical mode.

Subject invention

The water level control system in the irrigation canal, which includes a water outlet gate, retaining structures gates, each of which is driven, and an autoregulator connected to the level sensor and retaining structure gate actuator, which is different, is installed between each pair of adjacent gates of retaining structures In order to reduce the regulation time in the system, the position sensors of the retaining structures and water outlet gates are connected to the input of the autoregulator, and the output of the autoregulator is connected to Odom one of the gates of retaining structures.