SU1268833A2 - Device for protecting pneumatic systems from ingress of liquid - Google Patents

Abstract

The invention relates to devices designed to prevent liquid from entering pneumatic systems, and can also be used to release gases from tanks. The device contains a membrane installed in the housing, in the hard center of which the tube is fixed. A spring is installed in the nadmembrane chamber, and a float with an axial throttle bore is located in the submembrane chamber. The openings of the input channel are made in the body perpendicular to the axis of the float. The invention makes it possible to increase the reliability of the operation of the device. 1 il.

Description

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The invention relates to protection devices designed to prevent liquid from entering the pneumatic systems, and can also be used to release gas from tanks, and is an improvement to the device according to the main author. St. No. 1082992.

The purpose of the invention is to increase the reliability of the device by compensating for the dynamic effect of the gas flow on the membrane and the float. .

The drawing shows a diagram of the device.

In case I, a membrane 2 is installed, in the rigid center 3 of which a tube 4 is fixed. In a nadmembrane chamber 5 connected to an output channel 6, a flap 7 is installed, made of an elastic material, and a spring 8.

In the submembrane chamber 9 there is a float 10 with an axial throttle (2 hole 11. The upper end of the float 10 forms with the lower end of the tube 4 a stop valve pair - a saddle.

The openings 12 of the inlet channel were filled in the housing 1 perpendicular to the axis of the float 10.

The spring preload force is determined by the ratio

F К (Р, - Р,) 8 „, where F is the effort of preliminary

tighten the springs; , 1-1,2 - safety factor; - gas pressure difference in

submembrane and supramembrane chambers with maximum gas flow through the device;

S is the effective membrane area.

The device works as follows.

When air (gas) is supplied to the openings 12, it passes freely through 2688332

a gap between the housing 1 and the side surfaces of the float 10, the tube 4 and the channel 6. The spring 8 prevents the membrane from moving under the action of

5 differences in air pressure in submembrane 9 and supermembrane 5 chambers, due to the pneumatic resistance of the device. In the case of liquid ingress into submembrane chamber 9, float 10, due to buoyancy, emerges and presses against the lower end of tube 4. Fluid, not having time to pass through the orifice 1I into chamber 5, begins to fill

5 chamber 9. The gas plug formed in the submembrane chamber 9 is compressed, due to which membrane 2 together with tube 4, overcoming the force of spring 8, moves upwards and the top 20 of the research institute ends tube 4 pressed against valve 7. Thus, the valve closes and prevents flow fluid at the exit of the device,

Claims (1)

25 claims The device for protection of pneumatic systems from the ingress of liquids by auth.St. No. 1082992, distinguished by the fact that, in order to increase reliability, the holes in the inlet channel are made perpendicular to the float axis in the body, and in the supramembrane KaMeije between the body and the KIM 35, the center of the diaphragm is fitted with a preload force determined by (P, - P,) 8 „, 40 where, 1-1,2 - the safety factor; PJ-Pj is the gas pressure difference in the submembrane and supramembrane chambers at the maximum gas flow rate through the device; 3 „- effective membrane area.