SU1732871A1 - Sprinkler control unit - Google Patents

Abstract

Use: in agriculture at soil reclamation. The device contains a cylindrical pressure tank 1. A slotted spring-loaded control valve 5 with a stem 6 is placed in a slot on the bottom cover of the tank 1, at the end of which a spherical wind-sensitive element 7 is fixed. A calibrated bore 9 is made in the top cover of the casing of the disc valve 5 tank 1 through the manual tap regulator 14 of the water flow, the pulse tube 15 is connected to the upper cavity of the hydro relay 17, which controls the opening and closing of the valve 19 for supplying water to the pressure pipe 12 sprinkler th machine. By controlling the water supply to the tank 1 through the control valve 5 and using the device as compressed in the tank with water with water as a time delay unit, the device design is simplified, as well as its reliability and accuracy are improved. 1 il. CO with VI with you 00 VJ

Description

The invention relates to agriculture, in particular to the reclamation of agricultural land, and can be used to control multi-support sprinkler machines in the process of irrigating agricultural crops.

The aim of the invention is to simplify the design of the device, improving the reliability and accuracy of its operation.

The goal is achieved by the fact that a wind-sensitive element is fixed at the end of the stem of the spring-loaded control poppet valve. A calibrated orifice of small diameter is made on the top cover of the disc valve, and the inlet fitting of the pressure tank located on its bottom cover is connected by hydroline through the regulator valve to the upper over-membrane cavity of the hydraulic relay and the hydraulic protection unit of the machine. The time-delayed actuation of the wind-sensitive element at high wind speeds is accomplished by compressed air in the tank, and the regulation of the delay time of the wind-sensitive element is provided by a valve regulating the water supply to the inlet nozzle of the tank.

The drawing shows a diagram of the control device of the sprinkler.

The device contains a cylindrical pressure tank 1, with collapsible top 2 and bottom 3 caps, stud studs 4 with nuts. A slotted spring-loaded disc valve 5 with a stem 6 is placed in the slot on the bottom cover of the tank 1. At the end of the stem, a spherical wind-sensitive element 7 is fixed, which can be moved to control the actuation along the axis of the stem 6, and then rigidly fixed with two nuts 8. In the upper cavity of the hermetic control valve casing is made a calibrated orifice 9 of small diameter, for the metered flow of water flowing out of the cavity of the control valve 5 when the wind sensitive element 7 deviates under the action of wind and flowing through the inlet fitting 10 of the tank 1. To protect against impurities, the upper cavity of the valve housing 5 is closed by a cylindrical screen filter 11. The tank 1 with the wind-sensitive element 7 is fixed on the rotary knee of the water-supply pressure pipe 12 of the sprinkler with the help of the bracket 13.

The inlet fitting 10 of the tank 1 through the manual tap regulator 14 of the water flow and the impulse pipe 15, and the starting valve (hydrothrottle) 16 of the sprinkler

they are directly connected to the upper cavity of the hydrorelay 17. The inverse outlets of the hydrorelay 17 are connected to the upper and lower cavities of the hydraulic actuator 18 of the valve 19 for supplying water to the discharge pipe 12 of the sprinkler. The upper cavity of the hydro relay 17 has a drain valve 20. The lower cavity of the hydro relay 17 is connected by hydraulic line 21 also to the pressure pipe 12 of the rain machine through valve 22 and filter 23.

To provide adjustment of the device to the required amplitude of the wind speed depending on its direction.

5, the wind sensitive element 7 is provided with slit louvers 24 with adjustable shutters installed on either side of the element 7 perpendicular to the pipeline 12 of the machine. Overmembrane cavity

0 hydro relay 17 is connected via a pulse tube 15 with a valve-detector 25 of the hydraulic protection unit of the sprinkler.

Sprinkler Control

5 machines works as follows.

Before turning on the sprinkler, the valve 22 opens, the drain valve 20 of the hydrorelay 17 is closed. The crane 14 opens in such a manner

0 to provide the required time delay for the operation of the hydrorelay 17 when the wind sensitive element 7 deviates from the vertical when exposed to wind loads, for example

5 lasting no more than 3-5 minutes. After supplying water to the discharge pipe 12 of the sprinkler, it enters the valve 19 and through the open valve 22, filter 23, hydroline 21 into the submembrane cavity of the hydrorelay 17, and through the starting valve 16, the impulse pipe 15, the regulator 14 , the inlet nozzle 10-in the pressure tank 1, raise until the pressure of the air compressed is reached. Water also flows through the filter 11 and the calibrated orifice 9 inside the casing of the spring-loaded control valve 5.

After filling the tank 1 with water to a level where

0 the water pressure in the piping 12 of the sprinkler and compressed air in the tank 1, the water pressure in the supermembrane cavity of the hydrorelay 17 rises, its valves are switched and the water from the inlet nozzle

5 waterworks 17 enters the lower cavity of the hydraulic actuator 18, opening the valve 19 for supplying water to the pressure pipe 12 of the sprinkler. After filling the pipeline 12 of the machine, the water pressure in it rises to the worker.

The adjustment of the device to the required wind speed, at which the sprinkler is turned off, is carried out by moving the spherical wind-sensitive element 7 along the rod 6 and then fixing it with adjusting nuts 8, as well as by selecting such sections of the starting valve 16 and the regulator valve 14, at which the number the water flowing out when the angle 6 of the stem 6 and the valve plate 5 deviated from the vertical under the action of the wind was greater than the flow of water through the valve 14.

When the amplitude of the wind speed exceeds the maximum permissible, the rod 6 of the disc valve 5 is deflected at an angle a critical, the plate rises and water begins to flow out of the casing of the control valve 5, and therefore from the inner cavity of the tank 1. The water level in the tank 1 starts to decrease and after a predetermined time, for example 5 minutes, the pressure decreases and depressurizes the pulse tube 15 of the valve-alarm 25 of the hydraulic emergency protection unit of the machine and the non-membrane cavity of the hydrorelay 17, which forms a command to The closing of the water supply valve 19 to the water conduit 12 of the sprinkler.

After closing the valve 19, the sprinkler stops watering and is in standby mode for automatic start, i.e. when the amplitude of the wind speed is reduced to a value that ensures the normal mode of irrigation of the machine. When the wind speed decreases below the maximum allowable, the rod 6 of the sensitive element 7 is set to the angle o. but. when the critical, poppet valve 5 is closed, the water stops flowing from under the tray, the pressure in the pressure tank 1 begins to increase. Water flows through the valve 22, filter 23 into the supramembrane cavity of the hydrorelay 17, and also through the impulse pipe 15 through the regulator 14, fitting 10 - into the tank 1 Under the action of water pressure, the valves of the hydrorelay 17 are switched and the water pressure is transferred from the inlet fitting of the hydroreader 17 into the lower cavity of the hydraulic drive 18, opens the valve 19, and provides water to the water supply pipe 12 of the sprinkler, water pressure to the water supply pipe 12 of the sprinkler, the water pressure in which

rises to the worker, ensuring the movement of the machine and the irrigation of agricultural crops.

When a malfunction occurs in the car, the depressurization of the overmembrane cavity of the hydrorelay 17 and the closing of the water supply valve 19 to the pipeline 12 occur due to the depressurization of one of the signaling valves 25 of the hydraulic unit

emergency protection machine.

The planned installation of the sprinkler is performed by the operator by opening the drain valve 20 and closing the valve 22.

The application of the invention allows to improve the design of the control device, to unify the structural elements, to improve the accuracy of the device and the reliability of the machine.

Claims (1)

Invention Formula The control unit of the sprinkler, containing a hermetic pressure tank, in the bottom part of which there is an inlet connection communicated with an outlet nozzle of a crane regulator, a wind direction and speed sensor, equipped with slit adjustable shutters with curtains and made in the form of a wind-sensitive element connected by means of a rod and a control drain valve located at the bottom of the pressure tank, hydraulic emergency protection unit communicated through a cylindrical tube with nadmembrane the cavity of the hydrorele, the submembrane cavity of which is connected to its supramembrane cavity through the starting valve and to the over piston and sub piston cavities of the hydraulic actuator of the regulating valve for installation at the inlet of the discharge pipe of the sprinkler; the outlet of the control valve is connected through a series-connected valve and filter to the hydrorelay of the submembrane cavity, the supramembrane cavity of which is equipped with a drain valve, which, in order to simplify the design, increase operational reliability and the accuracy of the device, the drain valve controlling the direction sensor and wind speed is made cup-shaped, and in the top cover of its case, equipped with a mesh filter, in A calibrated hole is made, while the inlet port of the regulator is connected to the supramembrane cavity by means of a pulse tube via a pulse tube