SU1240418A1 - Apparatus for putting out fire in a reservoir - Google Patents

Description

2. The device according to claim 1, of which is that a syringe, a cavity, is installed between the bar and the disk. which is connected

The invention relates to fire fighting equipment and is intended for fire fighting by air-mechanical foam in tanks with oil and oil products.

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

FIG. 1 image |) A device for extinguishing a fire in a tank is a general view; in fig. 2 - hermetic shutter and locking element.

The device contains a foam generator 1 connected to a pressure line, a locking element 2 and a hermetic shutter 3 fixed to the wall of the tank 4. The hermetic shutter 3 has a ring 5 with clamping bolts 6 and is made in the form of an elastic membrane 7 and a crush 8 with pushers 9. The locking element 2 is in the form of racks 10 with pivots on the axes 11 with tacks 12 having bevels and contains a bar 13 with cut-outs at its ends in the form of grooves for the axes 11 of the tacks and a disk 14 that rests on the bevels turning tacks 12. Axes of tacks, entrance e in the notches of the strap 13, fix it motionless. Axes 11 in places of their contact with the bar 13 are cut in the longitudinal direction. Between the bar 13 and the disk 14 is located a syphon 15, the cavity of which is connected to the pressure pipe by a flexible gate 16; The bar 13 is pressed to the pushers 9 by means of springs 17. A cable 18 with a handle 19 is attached to the end of the bar, designed to manually depressurize the bolt. Axes 11 pass through holes in racks 10 that are attached to shell 20. The shell is attached to the tank wall with a flange joint

Sealing the reservoir space is accomplished by clamping the elastic membrane 7 between the ring

with pressure hose with flexible hose.

3. A device according to claim 1, characterized in that a cable with a handle is attached to the disk.

5 and the shell 20 by means of clamping bolts 6. The clamping bolts have an external thread and pass through the threaded holes of the bar 13. The plate has paths through which axis 11 passes with sections along the axis. In the initial position, the cuts of the axes are oriented in that they are in engagement with the protrusions of the slits of the strip, while the hooks 12 cover the ends of the disk 14.

The device works as follows.

The fire starts from the explosion of the vapor-air mixture in the space bounded by the surface of the flammable liquid, the walls and roof of the tank. The explosion pressure acts on the elastic membrane 7 and on the rigid

the cover 8 associated with it. The arising force from the membrane and the flap is transmitted through the pushers 9 to the disk 14. The ends of the disk act on the pivot hooks 12. As a result

the hooks rigidly connected to the axle 11 are rotated, releasing the disk 14. At the same time, the notches of the axes 11 are disengaged from the projections of the notches of the bar 13. The force of pressure

The explosion of the hermetic shutter is ejected to the outside, freeing the opening in the tank for supplying foam to it from the foam generator 1.

In the event that the device

at the time of the fire, it will be out of the blast zone, the valve will be depressurized with the help of the bellows 15. When the fire extinguishing system is turned on, the solution

the frother enters through the pressure pipe into the foam generator 1 and through the flexible hose 16 into the cavity of the syphon. When the bellows expands, a force is generated which acts on

the disk 14, as a result, the clamps 12 are rotated, releasing the bar 13 from engagement. Under the force of gravity and the pressure of the gases, the hermetic closure drops, releasing the opening in the reservoir to supply foam to it. Depressurization can also be carried out manually by pulling the cable 18 attached to the disk 14.

Thus, the hermetic shutter opens forcedly under

the force that occurs during an explosion at the time of the occurrence of a fire, therefore preventing damage to the device from thermal distortions due to the thermal effect of the flame. If the device is outside the zone of explosion and fire, the shutter is opened by means of a hydraulic system or manually.

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editor A. Lezhnin

Compiled by E. Ilyukhin Tehred L. Oleinik

Order 3424/3 Circulation 431Subscription

VNIIPI USSR State Committee

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

Production and printing company, Uzhgorod, st. Project, 4

Proofreader G. Reshetnik

Claims (3)

1. DEVICE FOR EXTINGUISHING FIRE IN THE RESERVOIR, containing a locking element and a tight shutter having a ring with pressure bolts, characterized in that, in order to increase reliability. According to his work, the hermetic shutter includes an elastic membrane and a lid with pushers connected to it, and the locking element is made in the form of racks with tack pivots that rotate on the axes, having bevels, slats with cutouts at the ends under the tack axis and a disk resting on the bevels tack, and the axis of the tack in the places of contact with the bar are cut 124041 2. The device according to π. 1, which is characterized in that a bellows and a cavity are installed between the bar and the disk. which is connected to the pressure line with a flexible hose. 3. The device according to π. 1, characterized in that the cable with the handle is attached to the disk.