SU1606134A1 - System for controlling sprinkler fire-fighting unit - Google Patents

Abstract

The invention relates to fire fighting equipment and eliminates group false alarms when the fire pump is turned on. The system contains supply, supply pipelines, as well as feed pipe with valve, throttle and shut-off device included in it. Additionally, there is an electrically operated valve, the inlet of which is connected to the working chamber of the shut-off device, and the outlet to the feed line. 1 il.

Description

The invention relates to fire fighting equipment and is intended for use in sprinkler fire extinguishing installations as a control unit and a link between the connecting (trunk) and supply (distribution) pipelines of the fire extinguishing installation.

The purpose of the invention is the elimination of group false alarms when the fire pump is turned on and the throttles are clogged, and also to simplify the nodes

The drawing shows a diagram of the device proposed. The control device includes a deluxe-type shut-off device (KZM valve) 1 and a valve 2, connecting the supply 3 and pi. melting 4. (and distribution) pipe-valve systems, valves 5, 6 and 7, valve with electric actuator 8, throttles 9 and 10, throttle hole 11 in the shut-off device membrane, pressure indicator SDU 12, pressure gauges 13 and 14 installed on pressure gauge valves 15 and 16 , energizing (compensatory) 17 and drainage 18 pipelines, membrane 19.

The device works as follows

Zara dka (filling) fire extinguishing

supply (and distribution) fluid 4 is produced with valves 5 and 6 closed and valve 8 open (valve 8 is a valve of a normally open electric version) by opening valve 7 to valve 2, this is followed by filling the seat under

O5

about

O5

with

four

overpressure from supply line 3 of both supply 4 and supply 17 pipes, at the same time filling the supply pipe, wires 4 is carried out mainly through the open start-up device 1 and through the feed line 17 open position of the stop-start device 1 - it is baked by the message of its working (stimulating) chamber with the supply pipe 4 through the open valve 8 and the feed pipe 17, On equalization of pressures in supply 15 and supply 4 pipes (read meters 15 and 16) are judged to stop charging the starting-up device 1, supplying 4 and distributing (not specified) pipeline- 20 pipeline. At the same time, the membrane 19 of the starting-up device (KZS valve) 1 sits on the saddle and closes the water signal a hole that is connected via a valve 6 by a pipeline 25 to a pressure alarm 12. Valve 6 then opens. No leakage of fluid through the choke 9 into the drainage pipe 18 and the signal from the detector 12 allows this device to be controlled ready for operation in standby mode (standby modes), In standby mode, valve 5 is closed all other valves 6, 7 and 8 are open. This mode is characterized by the equality of the fluid pressure in the inlet 3, feeding 17, feeding 4 pipelines and in the working chamber. the shut-off device 1, as well as the same pressure, equal to the atmospheric pressure, in the signal opening of the starting and starting device and the elements connecting it to the signaling device 12 and the drainage 18 o..45

The operating mode of the device for controlling the sprinkler installation.

In the event of a fire in a room protected by this section of the sprinkler installation, 1-2 sprinkler sprinklers installed on the distribution pipeline are exposed to a fire hazard from the temperature rise. Through the sprinklers, a fire extinguishing fluid is supplied to the fire source under pressure, which leads to a rapid drop in pressure in the distribution, and then the supply pipe 4, and is fed in 55

about h 0 5

about

five

through the open valve 8, the pressure in the working chamber of the shut-off device 1 decreases, as compared with the pressure in the supply pipe 3,

The rapid drop in pressure is due to the fact that the flow rate through the sprinklers is significantly greater than the flow coming to them from the supply line 3 through a small section of the throttle device 10 and 11,

As a result, an increased pressure is generated on the membrane 19 of the shut-off device 1 from the side of its inlet cavity (from the side of the supply pipe 3), and it opens, removing the fire extinguishing liquid from the supply line 3 and the supply line 4 from the seat and the passage the shut-off device 1 is accompanied by the opening of its water-signal response and, by the entry of a pressurized fluid into the alarm device 12, which triggers and signals the fire signal to the control panel. On command from the control panel, valves with electric drive 8 on all devices for controlling the fire extinguishing installation, except for the previously triggered device, are closed.

The closure of the valve 8 prevents liquid from the working chamber of the porn device starting 1 into the supply line 4 and thus prevents spontaneous opening of the shut-off device 1 at noBbmie pressure in the supply line 3 (when the fire pump is turned on). This mode excludes group false operating systems of shut-off devices. Without using the valve 8 of a normally open version, it is impossible to implement such a mode with an electric drive (shut-off valve) followed by its closing.

After the non-emergency mode is established, the mode excluding the group false fires, the fire pump is turned on, which provides the required operating mode in the fire extinguishing direction (through the activated shut-off device),

In the event of clogging during operation of the throttles on the feed line with daily pressure fluctuations in the feed and feed pipelines

IS

Claims (1)

Claim The control system of a sprinkler fire extinguishing installation, having control units containing shut-off devices and gate valves connecting the supply and supply pipelines 15 and feed pipelines, valves, throttles, pressure alarms, characterized in that, in order to eliminate group false alarms, 20 each of its units the control has an electrofan of normally open design, the inlet of which is connected to the working chamber of the shut-off device, and the output from the 25th hole is connected to the supply the piping is through an energizing, at the same time pressure signaling device of any of the nodes of the system is electrically connected to the electric fans of all nodes of the system, except for its own.