SU1147291A1 - Closed irrigation system - Google Patents

Abstract

CLOSED IRRIGATING SYSTEM, including a pumping station with blocks of main and booster pumps with a flow switch and a pressure switch, the pressure pipes of which through check valves and valves connected to the collector of the supply flow through the pressure pipeline vod1 to the closed irrigation network with sprinklers, control systems, and the number of operators. so that, in order to reduce the consumption of electricity and water, as well as increase the reliability of the system, the station is equipped with two pairs of signalizers — light and sound, with one pa Signaling devices are connected to the booster pump unit through the M1 contact, M1. The contact of the pressure switch is connected to the main pump unit through the closing contact of the flow switch.

Description

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. The invention relates to agriculture and can be used on closed irrigation systems, as well as in other areas of the national economy with similar hydraulic systems for supplying pressurized fluid.

Closest to the offering, the irrigation system is closed, which includes a pump station with blocks of main and booster pumps with a flow switch and a pressure switch, whose discharge nozzles are connected to a collector through check valves and valves for supplying a closed irrigation network with flow valves sprinkler m-operators controlled by operators 1.

A disadvantage of the known closed irrigation system is an increased consumption of electricity and water, as well as a decrease in the reliability of the system,

The purpose of the invention is to reduce the consumption of electricity and water, as well as increase system reliability.

The goal is achieved by closing the irrigation system, which includes a pumping station with blocks of main and booster pumps with a flow switch and a pressure switch, the discharge pipes of which are connected to the collector through the check valves and valves to a closed irrigation network with sprinklers controlled by operators, the station is equipped with two pairs of signaling devices - light and sound, with one pair of signaling devices connected via a short circuit to a pressure switch ohm booster pump, and the other via a make contact flow switch - with the main pump unit.

The drawing shows a schematic diagram of a closed irrigation system.

The closed irrigation system contains a pumping station with blocks of main I and booster 2 and 3 pumps and engines 4 with flow switch 5 and pressure switch b and pressure switch 7. The pressure nozzles of the pumps through check valves 8 and valves 9 are connected to a collector 10, which supplies water through a pressure pipe 11 to a closed irrigation network with long-distance machines operated by operators (not shown). The pump station is equipped with two pairs of signaling devices — light 12 and 13 and sound 14 and 5, with one pair of signaling devices connected to the booster pump unit 2 via the closing contacts of the pressure switch 6, and the other pair through the closing contact of the flow switch 5 to the main pump assembly. I. .

Light alarm devices 12 and 3 for blocks of the main 1 and booster 2 pumps .; to have different colors, and sound signaling devices 14 and 15 - different tonalities, When closing or opening, I correspond,

contacts, buzzer 14 and 15 give short signals.

Each pair of alarms is connected to two phases of the AC source, which ensures their operation only when the engine 4 of a particular pump unit is turned on. For the main pump unit 1, this will be the motor that is put into operation last, and for the booster pump unit 2 it will be the first.

0 Closed irrigation system works as follows.

Before starting the sprinkler operation, the irrigation network is closed and is filled with water (most often "manually") with the help of the booster pump unit 2.

Previously, all valves 9 should be closed. Then, the engine 4 of the first booster pump 3 is turned on (by the machinist). Since there is no back pressure in the manifold 10, the contacts of the pressure relay 6 are closed and the current from the electrical commu- Katsy engine 4 is supplied to the light 12 and sound 14 signaling devices. The buzzer 14 gives a short signal, and the buzzer 12 starts to work continuously, giving the command to the operators of the sprinklers: “The pump station is on, tightly close all the hydrants of the irrigation network. The valve 9 behind this pump opens until the pump 3 reaches its maximum permissible value, determined, for example, by the pressure downstream of the pump. Then, a similar operation is performed with the second booster pump 3. Further (as the network is filled with water and the back pressure increases) both valves 9 behind booster pumps 3 will be periodically opened by the driver to maintain the maximum possible supply of pumps 3 and speed up the filling of the network . In the future, both valves 9 open fully. At a certain pressure of water in the collector 10, the contacts of the pressure switch 6 are disconnected, the warning device 14 gives a short beep, and the warning device 12 stops working, which corresponds to the command of the sprinkler operators

5-machine: “The net is closed and filled with water and ready for the sprinkling machine. Before that, all the valves 9 of the main pump unit 1 should be open. When the contact of the pressure relay 6 is opened, the first booster pump 3 is turned off and the automation of the pump station is turned on.

Further operation of the pumping station occurs in automatic mode (without the fate of a person).

The second booster pump 3 continues to work, compensating for water leakage from the network

and maintaining the necessary pressure in it. If an air tank is installed at the start of the pressure pipe I (not

is shown), then the second booster pump 3 operates intermittently according to commands from the automatic air-water tank system.

When the first sprinkler is switched on, the pressure in the manifold 10 drops, since the booster pump 3 is not able to supply the amount of water that the sprinkler consumes to the discharge pipe II. When the pressure in the collector 10 drops to a certain value, the pressure switch 7 is activated, and the first main pump I is turned on, the supply of which is significantly higher than the booster pump, while the booster pump 3 is turned off.

Further, the commands for switching on the remaining main pumps 1 come from the flow switch 5 depending on the water consumption, i.e. the number of sprinklers operating. The greater the water consumption, the greater the number of main pumps 1 put into operation and vice versa. If the water consumption drops to zero, T: e. All the sprinkler machines are switched off alternately, then the flow switch 5 commands the alternate shutdown of all main pumps 1 and the subsequent activation of one first or second booster pump 3, ensuring "standby operation of the pump station, which is in the continuous support of a given water pressure in the irrigation network. If water consumption from a closed network when the next sprinkler is switched on exceeds the maximum allowable feed rate of the pumping station, what can happen

when the main pump unit is fully turned on, the corresponding contact of the flow switch 5 is closed and the current from the electrical communications of the motors 4 is supplied to the signaling devices 13 and 15. The short sound signal of the warning device 15 and the continuous light signal of the warning device 13 will indicate a command for the operator activating the next sprinkler machine: “Immediately close the hydrant, and for other operators -“ Further activation of the sprinkling machines is prohibited. Execution of these commands leads to a decrease in water consumption from the network and the opening of the corresponding contact in the flow switch 5, a short beep

the detector 15, the shutdown of the light, the detector 13 and the further normal functioning of the irrigation system. Failure to comply with these commands by operators of sprinkling machines leads either to cavitation failures.

main pumps 1, or to overloads of engines 4, triggered "protection and termination of the pumping station, i.e. to the emergency situation of the irrigation system.

The proposed closed irrigation system reduces the number of emergency pumping stations at the pumping station and the amount of manual labor, the number of service personnel at both the pumping station and the irrigated areas, reduces the cost of electricity and water, and increases the reliability of the entire irrigation system.

Claims (1)

A CLOSED IRRIGATING SYSTEM, including a pumping station with blocks of main and booster pumps with a flow switch and a pressure switch, the pressure pipes of which are connected through a non-return valve and gate valve to the collector Ala for supplying water through a pressure pipe to a closed irrigation network with irrigation machines controlled by operators, characterized in order to reduce the consumption of electricity and water, as well as to increase the reliability of the system, the station is equipped with two pairs of signaling devices - light and sound, with one pair of signals za- through recuperators, abutting contact pressure switch connected to the booster pump unit, and Drew Guy make contact through the flow switch - with the main pump unit. SU „„ 1147291