SU1260008A1 - Water=foam fire=fighting system - Google Patents

Description

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The invention relates to fire fighting equipment, and specifically to water fire extinguishing systems with foam dosing devices w.

The aim of the invention is to improve the convenience of service.

The drawing schematically depicts a water-price fire-fighting system.

The fire extinguishing system contains a pump i with a suction pipe 2 and a pressure pipe 3j a bypass pipe 4 with an ejector 5 integrated in Hfee, a tank 6 for a frother connected to an ejector 5 with an inlet pipe 7 with an integrated valve 8 with hydraulic actuator S, i iiittiE i pipe 10 with a bypass pipe 4, an inter-ejector core 5 and a pressure pipe 3. At the bypass pipe 4 me to, the pipe 10 is connected to it and a pipe 3 installed remotely controlled additional valve 1. The system a few have paralpelno ustanoplennps pumps.

In the feed of the consumers of an aqueous solution of a blowing agent, the system works as follows

They include Pasos 1 and open ss-- the porous valve b, besides, water from Composer A. Yudahin Editor H, Slobod Nash Tekhod jj. Cfd yes;

Order 5153 / 2Tirade 431Subscription

VNIISH State University

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

Intuitive-and-oligraphic predgritie, g, Uzhgorod, st. Design., 4

600082

The pump enters the downstream pipeline 3 and through the bypass pipe 4 through the additional valve 11 to iejector 5, and through pipe 10 to the hydraulic drive 5 of the locking valve 8, while opening it.

The water passing through the ejector 5 creates a discharge in it, thanks to

10 through which the foaming agent is transferred from the tank 6 through the supply line 7 through the open shut-off valve 8 to the ejector. From it, a mixture of water with a foaming agent together with a main stream of water is supplied to the suction pipe 2 and further to pumps 1. The foam formed with the mixture with a given concentration is formed by pumps fed to consumers by a pressure feed line 20, and some of it (approximately 6). 10%) bypass pipe 4 again into the ejector.

For supplying clean water to consumers, an additional valve I 1 is closed and closed. Vsedestv not stopping the flow of water through the bypass pipe 4 pressure from the pipe 10 and, therefore, from the working cavity of the hydraulic drive. 9 shut-off valve 8 pa; w, ate, and it automatically .JO ki shuts down, interrupting the foam-forming tank; 6 ,.

Claims (2)

WATER FIRE EXTINGUISHING SYSTEM, containing a pump with suction and discharge pipes, a bypass pipe with an ejector built into it, a reservoir for the foaming agent, ¹ connected to an ejector with an inlet pipe with an integrated hydraulic shut-off valve connected to it, with a bypass through the ejector, between an ejector, and a bypass between the eject, connected with an ejector, connected with an ejector, connected to an ejector, with a bypass, between the eject, connected with the ejector, between the eject, connected to the ejector a pipeline, characterized in that, in order to improve convenience of servicing, it contains a remotely controlled additional valve installed on the bypass pipe between the connection point of the pipe thereto and the pressure pipe. 2 one