SU815414A1 - Apparatus for suppressing hydraulic shocks - Google Patents

Description

 -. -.one

The invention relates to hydraulic auxiliary hydraulic aids and can be used to protect pipeline systems from hydraulic hoses.

A device dp for damping hydraulic impacts is known, which includes a rotary valve, communicated by a national piston camshaft with a protected pipeline, a diaphragm valve with a disconnected permembrane spool, communicated with a portable valve, and a pulse valve communicated with a diaphragm valve and pipeline i A disadvantage of the known device is efficiency. repeated hydraulic shocks. As a matter of fact, so is the reverse percussion shock.

The circuit of the invention is an increase in the efficiency of functioning.

This circuit is achieved by the fact that the diaphragm valve is designed to close normally and communicated through the throttles by the diaphragm aopostum — with the piston chamber, and with the separated choriate papilla — and with the membrane diaphragm valve.

The drawing shows a schematic diagram of the device.

The device contains a rotary valve 1 with a pressure of 2, the national cavity of which 3 is connected via throttle 4 with pipeline 5, a sliding valve 6 with a submembrane cavity 7 located between the spring-loaded membrane 8 and the partition 9, while the submembrane cavity 7 is connected to the pipeline 5 line 10 with test tool 11 and 12 with a return valve 13, connected in line 14. In addition, the device contains a normally closed diaphragm valve 15 with a membrane 16, a supermembrane cavity

17 which is connected via a choke

18 with a nadporschnevy cavity 3, and a disconnected submembrane cavity 19 through a choke 20 - with a drain and submembrane cavity 7 of an impulse valve 6. On line 14 a choke 2 is installed

The device works in the following way.

With increasing pressure in the pipeline 5, the pulse valve 6 opens and drains water from the over piston belt 3 of the active valve 1. Piston

2 under the action of the differential, it starts moving and opens the discharge from the pipeline 5. As soon as the main piston of the apana reaches the upper stop, the pressure in the piston cavity

3 and in the cavity 17 becomes close to the nupu and the normally closed diaphragm valve 15 opens under the action of a pressure differential in the supramembrane cavity 17 and the disconnected cavity 19 communicated with the cavity 7 of the pulse valve 6, thereby opening the discharge from the piston subnet 7 of the pulse valve 6 Due to the difference in cross sections of the throttles 21 and the throttles 20, the pressure in the pop 7 is less than the pressure in the pipeline 5.

When the pressure in pipeline 5 is significantly higher than the setting pressure of the device, the pressure in cavity 7 is also higher than the pressure setting, while the impulse valve 6 and the drain valve 1 remain in the open position.

If the pressure in pipeline 5 is significantly higher than the setting pressure, then the pressure in cavity 7 is lower than the setting pressure, the pulse valve 6 is closed and the piston 2 begins to move BHii3 to close. If, however, during the downward movement of the piston, a repeated increase in pressure occurs in the pipeline

5, the pressure increases and in the cavity 7, the pulse valve 6 opens and the piston 2 stops, and then begins to move to open, not allowing an emergency pressure increase in

pipeline.

Claims (1)

Invention Formula A device for extinguishing hydraulic shocks, including a drain valve connected above (1 piston and sub piston cavity with a pipeline, a diaphragm valve with a separated submembrane cavity, communicated with a drain valve, and a pulse diaphragm valve connected with a diaphragm valve and pipeline, characterized in that, with an increase in the efficiency factor of functioning 5, the membrane valve is made normally closed and connected through the chokes by a supermembrane cavity to the piston cavity of the drain valve, and the disconnected submembrane cavity - with drain and submembrane cavity of the pulse valve. Sources of information taken into account in the examination: 1. USSR Copyright Certificate № 6О1518, кп. F 16 L 55 / O2D976.