JPS588256B2 - Foam gun remote control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote control device for a foam gun used for extinguishing fires in outdoor storage tanks and the like in which large quantities of flammable substances such as petroleum are stored.

In recent years, so-called oil storage bases that store large amounts of oil and the like have been established in various places, and there is an urgent need to install fire prevention equipment for these.

Among these fire prevention equipment, as fire extinguishing equipment, it is necessary to emit a large amount of chemical extinguishing agent over a relatively long distance, so for example, a foam spray cannon that can emit a large amount of foam extinguishing water at a rate of about 2000 liters per minute is used. is used.

The present invention is directed to a remote control device for such foam cannons, and is capable of selectively controlling a large number of foam cannons with a particularly small number of lines. do.

The drawing shows a system diagram of the device of the present invention, in which a central control section P is provided corresponding to foam cannons 1-N, and rotating (
Individual signal generators F1 to Fn include transmitters f1 to f4 that generate four types of unique signals for left/right) and elevation (up/down).
, a foam gun selection switch K selectively connected to each of the individual signal generators F1 to Fn, and rotation elevation control switches R, L, U, and D connected to the foam gun selection switch, respectively. ing.

Further, control units U1 to Un are provided near each of the foam gun 1 to N provided at a remote location, and these units are connected to a common line 1 extending from a central control unit P, respectively.

Each of the control units U1 to Un consists of signal identification circuits B1 to Bn and control circuits A1 to An, and responds when a unique signal corresponding to each unit arrives from the central control section P. Piping H that sends a control signal for driving the rotation/elevation control mechanism of the gun barrel, which is comprised of a known hydraulic means or the like incorporated in the foam gun 1 to N, and also supplies water for foam fire extinguishing to each of the foam gun 1 to N. Electromagnetic valve Z installed inside
1 to Z n signals to operate the corresponding electromagnetic valve.

In addition, water supply device C supplies foam firefighting water through pipe H.
As shown in the figure, the fire detectors De1 to Den installed in each fire monitoring area drive the switching device J that opens and closes the power supply to the pump M, or the manual switching switch S is controlled by the central control unit P. It is also possible to install it inside the device and control it remotely.

For example, when a fire occurs in the oil storage tank (not shown) in which the foam gun 1 is installed and the fire detector De1 is activated, the pump M of the water supply system is first driven.

At this time, the central control unit P immediately determines the fire situation using a monitor TV (not shown) that is normally installed in this type of equipment, and selects a foam gun corresponding to the foam gun 1. Operate the switch K1 of the switch K, and set the turning/elevation control switches R, L, U, D to the individual signal generator F.
1 to each of the transmitters f11 to f14.

Then, while watching the above monitor TV, etc., operate the rotation and elevation control switches R, L, U, and D to adjust the gun barrel so that the foam extinguishing agent emitted from the foam gun 1 will surely fall to the point where the fire broke out. Just adjust it.

Note that at this time, the unique signal transmitted from the central control unit P via the common line l passes only through the signal identification circuit B1 of the control unit U1 corresponding to the unique signal, and therefore, the unique signal transmitted from the central control unit P through the common line l passes only through the signal identification circuit B1 of the control unit U1 that corresponds to the unique signal, and therefore is U2-Un never operate.

Also, regarding the electromagnetic valves 21 to Zn, only the electromagnetic valve z1 controlled by the control unit U1 is opened at this time, so that foam fire extinguishing water is not ejected from the other foam cannons 2 to N. .

Although the operation of the foam cannon 1 has been described above, the operations of other foam cannons may be performed in a similar manner.

As described above, according to the remote control device for a foam spray gun of the present invention, fire extinguishing at oil storage bases, etc., which have a large number of oil storage tanks scattered over a vast area, can be done remotely using a small number of lines. It also has the characteristics of being able to spray fire extinguishing foam extremely effectively at the location of a fire.

[Brief explanation of the drawing]

The drawing is a system diagram showing an embodiment of the present invention. P... Central control unit, U1~Un... Control unit,
1~N...foam gun, C...water supply device, F1~Fn
-...Individual signal generator, K...foam gun selection switch, R, L, U, D...swivel elevation control switch.

Claims (1)

[Claims] 1. In an outdoor fire extinguishing system that has a central control unit, a plurality of fire extinguishing foam cannons installed at remote locations with a rotating elevation control mechanism, and a water supply device that supplies foam extinguishing water to the foam cannons, The control section includes a swivel/elevation control switch, a foam gun selection switch, and a unique signal generator provided corresponding to the foam gun, and a unique signal identification circuit near the foam gun. and a control unit consisting of a control circuit, the central control unit and the control unit are connected through a common control line, and the foam emission and rotational elevation of the foam gun are selectively remotely controlled from the central control unit. A remote control device for a foam gun, characterized by: