SU1222284A1 - Arrangement for preventing air from getting into waste and sewage pipes - Google Patents

Description

1222284

2. The device according to claim 1, in accordance with the fact that the area is from. all but

The invention relates to fire fighting equipment, namely, devices that limit the possibility of flame propagation, and can be used for discharging gases containing mechanical impurities or hot gases.

The purpose of the invention is to increase the reliability of the device.

FIG. 1 shows a device, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a device with a partition, a longitudinal section j in FIG. 4 shows a section BB in FIG. 3

The device has a hollow body 1, an inlet 2 with an output end 3 placed in the body 1, an outlet nozzle 4, a lid 5 being in a closed state under the action of a counterweight 6, as well as an additional nozzle 7 placed in the body 1 and connected end with outlet nozzle 4. To reduce the dimensions, output segment 3 of input nozzle 2 and additional nozzle 7 made segment notches 8 and a partition 9 was installed between them. The direction of movement of the valve is shown in the device: bubbled lines at stand - by dashed

The device works as follows.

. versti equal to the cross-sectional area of the inlet.

In standby mode, a small amount of purge gas is supplied through the inlet 2, then the gas exits through the outlet of the outlet end 3 and lowers through the gap between the outlet end 3 of the inlet 2 and the additional nozzle 7 inside the housing 1, turns and enters the additional nozzle 7 ,

0 and then through the outlet 4 is vented to the atmosphere or fed to a flare burner.

When an emergency discharge of large quantities of gas, the pressure at the outlet end 3 of the inlet nozzle 2 is depressed, the valve 5 is deflected due to the pressure difference and opens the passage for gas from the outlet end 3 of the inlet nozzle 2 immediately into the additional cutting room 7 from which the gas goes .

After an emergency reset of the cap 5 under the action of the counterweight 6, it returns to its original position. The purge gas in the flow mode again goes in an S-shaped way.

The present invention, when used on waste and flare pipes, increases the reliability of

operation of the device due to increased mechanical strength on hot gases and on gases containing mechanical impurities.

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Fig.Z

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Editor N.Rogulich

Compiled by A. Yudahin

Tehred O. Sopko Proofreader S. Shekmar

Order 1636/4 Circulation 431 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch GShP Patent, Uzhgorod, Proektna St., 4

Claims (2)

1. A DEVICE FOR PREVENTING AIR INTAKE IN FLOW AND TORCH PIPES, comprising a hollow body with an inlet pipe, the output end of which is located in the body, an output pipe, an additional pipe and a cover placed in the body, characterized in that, in order to increase the reliability of its operation , an additional pipe is placed parallel to the inlet pipe and is connected at one end to the outlet pipe, and an opening is made on the side surface of the inlet pipe, the cap being mounted on the side surface of the pipe ka in the zone of the hole and has a counterweight, and the inlet end of the additional pipe is placed between the output end of the inlet pipe and the hole on its side surface. U fig 1 SU.,., 1222284 2. The device according to π. 1, the hole is equal to the sectional area included in that the area of the other pipe. I