SU1165308A1 - Command pulse generator - Google Patents

Abstract

A COMMAND PULSE GENERATOR, including a hydrocyclone with a drain valve, a diaphragm hydraulically adjustable valve, a hydropneumatic accumulator and hydraulic communication channels, characterized in that, in order to expand its functionality, the submembranes are connected to the cavity of the hydraulically controlled valve with a hydronic valve to the hydraulically controlled valve with a hydracneumatic valve and a hydraulic valve. a check valve and an adjustable choke with a conical chamber of a hydrocyclical, and the drain valve is equipped with a diaphragm actuator, which has a supramembrane cavity with dinena hydrocyclone with a cylindrical chamber, with its effective size is equal to or smaller than the membrane area of the discharge valve hole. (L O) ate with about 00

Description

The invention relates to land reclamation and can be used on irrigation systems. Known command pulse generator. including a pressure and drain piping, hydraulically controlled valves, 5 venturi nozzle and a hydraulic differential switch connected to the pressure pipeline and the nearest impulse sprinkler {1J. The disadvantages of this generator are the need to install it near the irrigated area to connect to the control sprinkler, as well as the limited scope. A generator of command pulses for closed irrigation systems is also known, including a hydrocyclone with a drain valve, a hydraulically controlled diaphragm hydraulically operated valve and hydraulic communication channels 2. The disadvantages of this generator are also the need to install it near the irrigated area to be connected to the pulse sprinkler and possibility of use only on impulse rain systems. The aim of the invention is to extend25 functionality. This aim is achieved in that the generator command pulses, comprising a hydrocyclone with a drain valve membrane Hydraulic emy valve gidropnevmoakkumul torr and gidravlicheskie30 communication channels podmembranna cavity Hydraulic emogo valve communicated sTidropnevmoakkumul torus, which is connected via a parallel set-return valve and adjustable throttle with a conical chamber of a hydrocyclone, and the drain valve-35 pan is equipped with a membrane drive, the supermembrane cavity of which is connected to the cylindrical chambers second hydrocyclone, wherein the effective area of the membrane it is equal to or smaller than the area -up opening the drain valve. FIG. G shows the command pulse generator; in fig. 2 — node 1 in FIG. i; drain valve hydrocyclone. The command pulse generator is installed at the head of the irrigation system and consists of a hydrocyclone 1 with cylindrical 2 and conical 3 chambers, a tangential inlet 4 and an axial output 5 nozzles. A mesh filter 50 is placed at the inlet 5 inside the hydrocyclone; in the lower part of the hydrocyclone, a bracket 7 has a drain valve 8 which includes an opening 9, a second 10 attached to the bracket 7 by a bolt II, a membrane 12 inserted into the triangular ring groove 13 of the movable body 14 and a re-55 zine gasket 15 fixed on the upper plane of the body 14. The supermembrane cavity of the body 14 is connected via a bend 11653 8. Whose communication channel 16 is connected to the cyclical chamber 2 of the hydrocyclone (or tangential nozzle 4). The effective area of the membrane 12 and the area of the hole 9 must meet the condition (1) where “is the effective area of the membrane; fow is the area of the drain hole saddle. A hydraulically controlled valve 17 is mounted on the tangential inlet 4 with a diaphragm 18, spring 20 pressed to the saddle 19, adjustable by a screw 21 installed in the cover 22. Hydraulic pneumatic accumulator 23 connects the hydraulic cavity 23 to the valve 18 and in parallel with each other installed check valve 25 and an adjustable throttle 26 is connected to the conical chamber 3 of the hydrocyclone in the area of the drain hole 9. Water is supplied to the generator through a pipe 27. The command generator The pulses work as follows. When water is pumped from the pump through the patrol ca. 27, it presses down the diaphragm 18 through the tangential nozzle 4 to the hydrocyclone 1 where the flow is twisted through the strainer 6 and the nozzle 5 enters the irrigation network. In the vortex flow of the hydrocyclone, the pressure in its peripheral part will be greater than the axial pressure, and the water pressure in the supramembrane ' cavity in the body 14 will be greater than the orifice 9. The body 14 will rise and the valve 8 will close. In this case, the water is purified - heavy particles fall down to the hole 9, and light particles settle on the grid 6. Since the water pressure in the hole zone 9, the valve cavity 17 is less than through the reverse valve 25 and the hydropneumatic accumulator 24. in its supramembrane cavity, at full flow through the generator, the membrane 18, compressing the return spring 20, is in the lower open position. When water is filled with the pulse droppers of the system, the water flow rate and the rotation rate of the flow in the hydrocyclone gradually decrease, the water pressure in the axial part of the hydrocyclone gradually increases and approaches its periphery. As soon as the total force of the spring 20 and the pressure of water in the submembrane cavity of valve 17 is equal to the pressure of water in its supramembrane cavity, the membrane 18 will rise and close the saddle 19. Water supply and rotation in the hydrocyclone will stop and the pressure in the hydrocyclone will always be the same . With equal pressures in the hole 9 and the supramembrane cavity of the body 14, the resultant force acting on it from the condition of the formula (1), taking into account the weight of the body itself, will be directed downwards. The housing 14 is lowered, opening the opening 9. Water from the system through the nozzle 5, the strainer 6 and the opening 9 is discharged into the sump, washing the strainer and washing the solid sediment, and creates a pressure drop in the irrigation network. From the hydropneumoaccumulator 24 through the throttle 26, the water is gradually drained and as soon as the force created by the pressure of water in the submembrane cavity and the spring becomes less than the force of water applied to the area of the saddle 19, the valve 17 will open. The cycle is repeated.

By changing the pressure of the spring 20 and adjusting the throttles 26, you can adjust the degree and duration of filling the pulse sprinklers, as well as the duration of the pressure drop signal in the network.

On conventional drip irrigation systems, the generator automatically switches off the water supply and flushing of droppers when they are clogged and the total water consumption in the system is reduced to a predetermined level.

P

15

73

70

FIG. 2

Claims (1)

A COMMAND PULSE GENERATOR, including a hydrocyclone with a drain valve, a diaphragm hydraulically controlled valve, a hydropneumatic accumulator and hydraulic communication channels, characterized in that, in order to expand the functionality, the submembrane cavity of the hydraulically controlled valve is in communication with the hydropneumatic accumulator, which is connected through a parallel valve. an adjustable throttle with a conical chamber of a hydrocyclone, and the drain valve is equipped with a diaphragm actuator, the supranembrane cavity of which is connected a cylindrical chamber of the hydrocyclone, wherein the effective area of the membrane it is equal to or smaller than the area of the discharge valve hole. Figure 1 about Joint venture QO