RU142841U1 - FIRE FIGHTING - Google Patents

Abstract

A fire barrier formed by a fireproof fabric enclosing the fire hazard zone, characterized in that it is made in the form of a sleeve covering the fire hazard zone, hermetically attached to the floor of the production room and in the folded state in the absence of fire with the possibility of its deployment and lifting up the slings using a lifting mechanism in the event of a source of ignition inside the fire barrier, the lifting mechanism is equipped with drums with opami associated with the sleeve, and a drive for winding lines placed at the ceiling of the production room.

Description

The utility model relates to fire fighting equipment and can be used for fire protection, namely to block the source of fire in case of fire.

There is a known fire extinguishing system for a sealed room, when used in the event of a fire source in the room, the latter creates a volumetric concentration of the extinguishing agent that fills the entire volume of this room (Copyright certificate SU No. 1501349 A1, priority date 06.23.1987, publication date 07.27.1999, Bem A.S. et al., RU).

The disadvantage of this device is the following:

- unreasonably high consumption of extinguishing agent in cases where the ignition zone does not occupy the entire volume of the room, but only part of it;

- damage to production personnel, equipment and materials located in the room when using chemically active and harmful extinguishing substances harmful to human health.

Known anti-smoke curtain is fireproof in the form of a fire-retardant fabric wound on a shaft with a drive unit, used as an anti-smoke barrier in technological and communication openings of buildings (RF Patent No. RU 71550 U1, priority date 11/08/2007, publication date 03/20/2008, I. Makunin. . and others, RU).

A disadvantage of the known curtains is the limited scope.

As a prototype, the construction of fire curtains made of fire-resistant fabrics, mounted on a special cornice and lowered from the cornice to the base (floor of the room) in case of a fire source inside the fire hazard zone along which these fire curtains are located, is adopted closest to the claimed device forming a fire barrier (http://www.bikoms.ru/dictionary/p/protivopozharnye-shtory-ei60/, http://afton.ru/products/fire-barriers/fireproof-curtains/ei60/, access date 23.01. 2014, prototype).

The disadvantage of the prototype is the low efficiency in providing a fire barrier due to the leaky fit of fire curtains to the side rails and the base (floor of the room), as a result of which there are:

- preservation of partial gas exchange (in particular, natural draft; Geyer V.G., Dulin V.S., Zarya A.N. Hydraulics and hydraulic drive. M: Nedra, 1991, 331 p.) between the ignition zone blocked by fire curtains , and the remaining volume of the room, which complicates the process and increases the time to extinguish the fire inside the specified zone;

- penetration of combustion products and chemically active and (or) harmful to human health extinguishing agents outside the fire zone blocked by fire curtains.

The objective of the utility model is to increase the efficiency of the fire barrier of the fire hazard zone to ensure the safety of production personnel and the safety of production equipment and materials, as well as to reduce the time for elimination of the fire source when fighting a fire inside a production room with chemically active and / or harmful gas and dust fire extinguishing substances.

To solve the problem, the fire barrier formed by the fireproof fabric enclosing the fire hazard zone, according to the utility model, is made in the form of a sleeve covering the fire hazard zone, hermetically attached to the floor of the production room and in the folded state in the absence of fire with the possibility of its deployment and lifting up the slings with using a lifting mechanism in the event of a fire source inside the fire barrier, while the lifting mechanism is equipped with a bar bans on them with the winding straps associated with the sleeve, and a drive for winding lines placed at the ceiling of the production room.

Being folded in the absence of fire inside the fire hazard zone, the fire barrier provides the ability to move production personnel throughout the production room and access to all production equipment.

In the raised state (after the occurrence of a fire source in a fire hazard zone and the production personnel are removed to a safe distance from the fire zone), the fire barrier prevents gas exchange between the fire zone and the rest of the production area, as well as the penetration of combustion products and gas-dust fire extinguishing substances from the fire zone into the rest of the area production premises.

In FIG. 1 schematically shows a plan for the location of fire barriers in a room around production equipment in places of greatest probability of fire; in FIG. 2 - fire barrier in the idle position (in the absence of a source of ignition), a vertical section; in FIG. 3 - fire barrier in the working position (if a fire occurs), a vertical section.

The design of the fire barrier contains a sleeve 1 made of fire-resistant fabric, covering one of the fire hazard zones 2, inside the production room 3, bounded by walls 4 (Fig. 1). The sleeve of the fire barrier 1 is hermetically attached to the floor 5 of the production room 3, or is buried in it (not shown conditionally). On the ceiling 6 of the production room there is a lifting mechanism for lifting the sleeve 1 using slings 7 attached to the sleeve 1 and wound on drums 8 equipped with drives 9 for their rotation. Near the ceiling 6 there is also a source 10 for spraying a fire extinguishing agent, acting when a source of ignition 11 occurs in the form of a stream 12.

Fire barrier is used as follows.

In the production room 3, limited by the walls 4, in the absence of a source of ignition 11, the sleeve of the fire barrier 1 is folded and hermetically attached to the floor 5 of the production room 3, covering the fire hazard zone 2. Using slings 7, the sleeve of the fire barrier 1 is connected to the drums 8 a lifting mechanism connected to the drives 9 of their rotation, located near the ceiling 6 of the production room 3. Directly above the fire hazard zone is a source 10 for spraying chemically active and (or) gas and dust extinguishing agent, which is rare for human health (Fig. 2).

If there is a source of ignition 11 in the fire hazard zone 2 and the production personnel are removed to a safe distance from the fire zone, the sleeve of the fire barrier 1 rises and straightens with the help of slings 7 wound around the drums 8 using the drives 9 of the lifting mechanism. Thereby, the ignition site 11 is blocked from all sides and gas exchange is prevented over the entire height of the sleeve of the fire barrier 1 between the ignition zone 2 and the rest of the production area. As a result of this, the natural draft in the ignition zone is reduced, and the oxygen supply to this zone is reduced. After raising the sleeve of the fire barrier 1 around zone 2, a stream 12 of chemically active and (or) harmful gas and dust extinguishing agent, the penetration of which outside the zone 2 is prevented by the sleeve of the fire barrier 1, is supplied inside the zone 10 through the spray source 10. In addition, the sleeve of the fire barrier barriers 1, providing a tight barrier, prevents the penetration of zone 2 combustion products (Fig. 3).

The technical result of the proposed device is to increase the efficiency of the fire barrier of the fire hazard zone by blocking the fire, to ensure the safety of production personnel by increasing the degree of protection of people and to reduce consumables and time to eliminate the fire when fighting a fire inside the production room with chemically active and (or) harmful for human health with gas and dust fire extinguishing agents.

At the same time, the technical and economic efficiency of the proposed device is due to:

- a decrease in the consumption of extinguishing agents during the elimination of the source of ignition due to the limitation of the spraying area of gas-dust extinguishing agents with the help of a sleeve of a fire barrier;

- prevention of damage to equipment and materials located outside the ignition zone by chemically active gas and dust extinguishing agents due to the limitation of the area of atomization of these substances by the walls of the sleeve of the fire barrier;

- increasing the efficiency of production personnel after the elimination of fires due to an increase in the degree of protection of people from harmful to their health exposure to combustion products and dust and gas fire extinguishing agents.

Claims (1)

A fire barrier formed by a fireproof fabric enclosing the fire hazard zone, characterized in that it is made in the form of a sleeve covering the fire hazard zone, hermetically attached to the floor of the production room and in the folded state in the absence of fire with the possibility of its deployment and lifting up the slings using a lifting mechanism in the event of a source of ignition inside the fire barrier, the lifting mechanism is equipped with drums with opami associated with the sleeve, and a drive for winding lines placed at the ceiling of the production room.