Method of opened process openings protection against fire and fire localization device

FIELD: fire-fighting equipment, particularly for localizing fire appeared in process orifices, for instance during coloring large articles or on stage.

SUBSTANCE: method involves using elastic fire barrier formed as dropping curtain device for fire localization. Device for above method implementation performs curtain movement in several modes. Device structure is so that device protects maintenance staff or actors present in working area from injuries during heavy curtain motion. Screen has door located in lower part thereof to evacuate people from dangerous area by rescuers or for people self-evacuation.

EFFECT: possibility of injury prevention, prevention of hazardous products escape from fire site, provision of seal between screen and frame when process opening is fully closed.

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The invention relates to fire fighting equipment and designed for containment of a fire in the open technological openings, for example when painting large items or on the stage of the auditorium, with an elastic fire-resistant barriers, made for example in the form of a falling curtain. A device that implements the method of fire protection of openings, has several modes of movement of the protective screen. The device eliminates the possibility of injury when moving fire resistant barriers, with considerable weight, maintenance staff or artists that are in the working area of the action.

The known device (Maailman. Fire prevention in construction. M, stroiizdat, 1978), which consist of the following elements: framing, insulation frame, mechanism for raising and lowering and nodes sealing.

The disadvantages of these devices include their bulkiness. In large modern theatres fire curtain weighs more than 25 tons. To accommodate curtain lifting type must have sufficient space above the stage, and for sliding type side of the stage.

For sealing the upper edge of the curtain using a metal trough, which is equal to the length of the curtain and filled with dry sand, in which is immersed the visor curtain is ena.

Pair of curtain with side guides do not provide integrity and does not guarantee against seizure curtain at the possibility of bias in the process of lowering. In addition, these deficiencies do not include measures to protect people that are in the transition zone fire curtain, causing them injuries.

The known method, which implements a device for localization of fire (USSR author's certificate No. 772555, class. And 62 With 3/02, 1980)adopted for the prototype of the proposed method. The principle of operation of the specified device is that along the front of the fire is installed vertically flexible non-combustible fence, then create a seal the bottom of the boom using a perforated sleeve by feeding him in the fire extinguishing fluid and the expiration of this fluid under pressure through its perforations. Thus Babich flame spread under the barrier, and flame propagation in the vertical plane along its entire height and length.

A disadvantage of this device is that it is stationary, which interferes with the smooth operation in the open doorway. In addition, the seal design does not exclude the possibility of passing the products of combustion (fumes and gases) through the top and side edges of the flexible boom.

For the implemented method of fire protection of openings eliminates these drawbacks.

For this purpose, the method of fire protection of openings, including overlap with the fire of the open doorway protective shield mounted on the frame, creating a seal gap between the screen and the frame to prevent the combustion products from the fire after a full overlap with the protective screen of the open doorway, to determine the fire detection boundary of the top-level business activities and after fire detection installed above the boundaries of the means of damping the kinetic energy arising from the movement of the screen, then move with the acceleration of free fall protection screen and after the entry into force interaction of the specified screen with means for damping the kinetic energy produced during their joint movement full repayment acquired by the screen of the kinetic energy and stopping of the protective screen on the border of upper-level work activities, and the further movement of the screen is produced with a delay determined by the formula

where T is the delay time further movement of the screen;

t1the time perception of the signal fire alert.

t2the time of acceptance by the person of the decision to evacuate from a dangerous area;

t3the time of evacuation of a man from the farthest point of the danger zone, the Les which provide further slow moving the screen to the lower level of business activities, for example, to the floor.

To determine the boundaries of upper level work action to fire detection allows you to define the boundary, which can produce rapid movement of the protective screen. The height, on which is placed this boundary must ensure the free movement of maintenance personnel depending on the maximum growth of a person, for example, on the stage or in the process of Boxing, as well as mechanisms that prevent evacuation of people from the danger zone.

Moving the shield with the acceleration of free fall allows you to quickly cover a significant portion of the open doorway.

Accommodation after a fire detection means damping the kinetic energy above the border of the upper level of working steps:

to meet the protective screen when it is moving fast and to repay the acquired latest kinetic energy;

- perform a full stop of the protective screen on the border of upper-level work activities;

Delay further movement of the screen allows the evacuation of the man from the farthest point of the danger zone and then make further slow moving the screen to the lower level of business activities, for example to the floor.

Slow moving the screen to the lower level of business activities, for example to the floor, allows the t to quickly evacuate when unforeseen circumstances the remainder of staff or artists, located in the hazardous area of the open doorway.

The closest analogue adopted for the prototype of the claimed device, the selected fence to limit the spread of fire (USSR author's certificate No. 860770, class. And 62 With 3/02, 1981), which consists of a tape made of fireproof material wound on the reel and stand with weighted base, and one end of the tape attached to the rack, and the other to the coil. At the top of the coil and the rack has rings for transport, United earring, and on the top edge of the ribbon are check boxes for visual inspection final deployment ribbon.

The fence works as follows.

Next to the fire place install the rack with weighted for stability of the base and front in relation to a possible fire deploying from reel tape made of non-combustible material. The number that appears, check boxes, placed on the top edge of the tape, determine the degree of unrolling of the tape.

These same steps may be performed in the initial stage of the fire, which is a possible limitation in the fire area.

The disadvantages of this device is its complexity, the lack along the perimeter seal protects from the harmful products of fire, and you must carefully creditcontrol in the area of finding people.

The inventive device eliminates these drawbacks.

For this purpose, the device for localization of fire, containing a movable protective shield is wound on the drum, a frame with means for fixing and moving of the screen on the front protective screen mounted to the base, the ends of which are executed axis, with the possibility of axial movement in the slots of the side uprights of the frame, and a means of damping the kinetic energy arising from the movement of the screen, made in the form of racks, with the possibility of axial movement towards the movement of the screen above the border of upper level business activities, and in the opposite direction, and each rack is mounted in the hole of the floor of the open doorway and has a shock-absorbing device, installed from the side facing the screen, and the fixation device installed on each shock-absorbing device in the form of the castle to capture the axes of the base, and on the front part of the base is mounted an elastic plate, and the bottom of the screen made the door, painted with two, for example, in bright red color, fixed clamp connections, such as "Velcro" of the contact ribbon or button connection.

Mounting base, usually weighted at the front protective screen allows the production is the input of its movement with acceleration of free fall after you run the commit.

Performance on the ends of the base axes, with the possibility of axial movement in the slots of the side uprights of the frame, allows the following:

- pre-pressing of the protective screen as it is unwinding from the drum along the contour of the open aperture, thereby minimizing the penetration of harmful products of combustion from the fire in lowering of the protective screen to the creation of a seal the perimeter of the screen around the contour of the frame;

to produce on the border of upper level work activities fixation axes lining means recording, made in the form of the castle to capture these axes lining.

Use in the inventive device, a means of damping the kinetic energy arising from the movement of the screen allows the following:

to repay the speed of movement of the screen to a complete stop at the boundary.

- to produce rapid movement of the protective screen while overlapping a substantial portion of the open doorway to the border of upper-level work activities;

- to reduce the movement speed of the screen to safe values at the height of the maximum height of a person, for example, on the stage.

Execution means damping the kinetic energy in the form of racks, with the possibility of axial movement as newstr the Chu movement of the screen above the border of upper level work action and in the opposite direction, you can move called the rack only after the discovery of the source of fire in the open doorway and to exercise freely work in the open doorway, for example, in Boxing when painting large items or on the stage.

The execution of the tool fixing a lock to capture the axes of the base, set on the border of upper-level work action, mounted on each rack allows you to securely fix on these racks falling with an acceleration of free fall protection screen.

Mounting on the front of the base of the elastic lining eliminates trauma slow when moving the screen to the bottom of the open doorway.

Being in the bottom of the screen door, painted on both sides, for example, in bright red color and fixed clamp connections, such as "Velcro" of the contact ribbon or button connection allows you to:

- to produce a rescue in the event of unforeseen circumstances, the evacuation of the people remaining in the hazardous area;

- quickly find an escape route in case of smoke;

to simplify the evacuation formed through a temporary opening in the screen.

- quickly complete seal formed in the view of the open doorway after evacuation or rescue.

p> Thus, the distinguishing features of the proposed technical solutions are new and meet the criterion of “novelty”.

The conformity of the distinguishing features of the present invention, the criterion of “inventive step” was analysed prior art and, in particular, known methods and devices related to fire technology and designed for containment of a fire in the open technological openings, including the following:

- several modes of movement of the protective screen, first a rapid acceleration of free fall to the border of the top-level business activities, for example to the height of the maximum height of a person in the process box or on the stage, and then a slow, precluding the possibility of injury to service personnel or artists;

- full damping of the movement speed of the screen on the marked boundary;

- partial sealing of the open doorway from the penetration of harmful products of combustion from the fire in the zone of evacuation as the movement of the protective screen and complete sealing of the specified opening after closing screen all openings;

However, the known methods and devices do not solve the previously mentioned problems, it is not explicitly follow from the prior art.

On the basis of the years presented, we can conclude, that the proposed solution meets the criterion of “inventive step”, and the invention is new.

1 shows a General view of the device for localization of fire (which implements the inventive method) in the standby mode; figure 2 - the same after fire detection and install the damping of the kinetic energy above the border of upper level work activities; figure 3 is the same after moving with acceleration of free fall of the protective screen and the entry into force interaction of the axes of the grounds specified screen with means for damping the kinetic energy (at the moment of capture of the axes of the base locks means of fixation); figure 4 is the same after the complete extinction acquired by the screen of the kinetic energy and stopping of the protective screen on the border of upper-level work activities; figure 5 - in the same time move the screen to the lower level of business activities, for example to the floor; figure 6 shows a cross-section of the inventive device along a-a with view on the left-side rack in the standby mode; figure 7 shows a cross-section of the inventive device b-B with views of the left-side rack in the stopping of the protective screen on the border of upper-level work activities; Fig shows a cross-section of the inventive device In To the form on the left side of the rack at the time of stop C the protective screen on the border of the lower level of business activities; figure 9 shows a cross-section of the inventive device In To the form on the left side of the rack at the time of creation of the seal gap between the screen and the frame after full overlap past the open doorway; figure 10 shows a cross-section means of fixation to capture its castles axis of the base; figure 11 shows a cross-section means of fixation after the capture of its castles axis of the base; on Fig shows a cross-section in the standby mode of the inventive device d-D with the form on the right side of the rack; Fig depicts a magnified view of the cross-section of the roller; Fig depicts a magnified view of the cross-section of the base.

A device for localization of the fire (figure 1) consists of a frame 1 mounted above the open doorway 2. The frame 1 has side posts 3 and 4, in the upper part of which is above the open doorway 2 is mounted the drum 5. In the standby mode on the drum 5 is wound shield 6 is made of fireproof material.

The mover of the screen 6 is made in the form of an electric drive 7 and the brake device 8, which are mounted on the bracket 9, secured to the rack 4.

On the front side of the screen 6 is mounted to the base 10, the ends of which are executed axes 11 and 12, with the possibility of axial movement in the slots 13 (6, 7 and 8) and 14 (Fig) corresponding with the OEK 3 and 4.

The contour of the open aperture 2 has a U-shaped clamp 15, which is connected with the swinging elements 16, 17, 18, 19, 20 and 21 with the respective actuators 22, 23, 24, 25, 26 and 27. And to complete overlap of the open doorway 2 protective screen 6 clamp 15 provides for the free movement of the latter.

A means of damping the kinetic energy arising from the movement of the screen 6, made in the form of racks 28 and 29, each of which is mounted in the respective openings 30 and 31 of the floor. The rack 28 and 29 have the possibility of axial movement towards the movement of the screen 6, and in the opposite direction. On the racks 28 and 29 from the side facing the screen 6, there are mounted respective shock absorbing devices 32 and 33.

The fixing means of the inventive device consists of a means of fixation of the uprights and means of fixation axes of the base of the screen. Means for fixing the racks 28 and 29 is made in the form of electromagnetic trigger-locking devices 34 and 35 are installed in the upper part of the respective holes 30 and 31.

Means for fixing the axes of the base of the screen is mounted on a shock-absorbing devices 32 and 33 and is made in the form of locks 36 and 37 (figure 10 11) for gripping the respective axes 11 and 12 of the base 10.

Under the drum 5 is wound around the screen 6 is mounted on a shaft 38, the roller 39 (Fig), which uniformly presses the screen 6 to the frame 1 through the ore its unwinding from the drum, that helps to minimize the penetration of harmful products of combustion from the fire in lowering of the protective screen to the creation of a seal the perimeter of the screen around the contour of the frame. Moreover, the roller 39 has a possibility of axial rotation.

On the front part of the base 10 is mounted a resilient pad 40 (Fig).

In the lower part of the screen 6 are of the door 41, painted on both sides, for example, in bright red color, fixed clamp connections, such as "Velcro" of the contact ribbon or button connection.

The operation of the claimed device control unit 42 that controls automatically or manually by trained staff liaison 43, 44, 45, 46 and 47 by the interaction of the electric actuator 7 and the brake 8, the actuators 22, 23, 24, 25, 26 and 27 and the electromagnetic trigger-locking devices 34 and 35.

The inventive method is implemented as follows.

Before the discovery of fire define the boundary of the upper level of the working action of H2. The height, on which is placed this boundary must ensure the free movement of maintenance personnel depending on the maximum growth of a person, for example, on the stage or in the process of Boxing, as well as mechanisms that prevent evacuation of people from the danger zone.

Upon the occurrence of a fire is an open technological aperture, for example when painting large items or on the stage of the auditorium, by using block 42 automatic startup electromagnetic trigger-locking devices 34 and 35, thereby moving the racks 28 and 29 above the boundaries of H2and full stop devices 34 and 35 at a height of H1. Then moves with the acceleration of free fall of the protective screen 6, and after accession to the height H1in the force interaction of the specified screen locks 36 and 37 means of damping the kinetic energy (figure 3, figure 10 and 11) is their joint moving and damping acquired by the screen of the kinetic energy absorbing devices 32 and 33, and at the end stop of the protective screen 6 on the upper level of the working action of H2.

Further movement of the screen 6 occurs with a delay determined by the formula

where T is the delay time further movement of the screen;

t1the time perception of the signal fire alert.

t2the time of acceptance by the person of the decision to evacuate from a dangerous area;

t3the time of evacuation of a man from the farthest point of the danger zone.

After the evacuation of people from the danger zone is the slow movement of the screen 6 to the lower level slave who sneeze actions for example, to the floor (figure 5, 8 and 9), where the sealing of the gap between the screen and the floor with resilient pads 40. Then seal the gap between the screen 6 and the frame 1 by running drives 22, 23, 24, 25, 26 27, which, by oscillating elements 16, 17, 18, 19, 20 and 21 move the U-shaped clamp 15, sealing along the contour of the open doorway 2.

In case of emergency evacuation of people remaining in the hazardous area is made by yourself or with the help of rescuers through the door 41 in the bottom of the screen 6.

Moreover, the door 41 is painted on both sides, for example, in bright red color that allows you to quickly find it in case of poor visibility, people or rescue located in a hazardous area.

1. The way fire protection of openings, including overlap with the fire of the open doorway protective shield mounted on the frame, creating a seal gap between the screen and the frame to prevent the combustion products from the fire after a full overlap with the protective screen of the open doorway, characterized in that define the boundary of upper-level work action before the discovery of fire and after fire detection installed above the boundaries of the means of damping the kinetic energy arising from the movement of the screen, then move with acceleration St. the free fall protection screen and after the entry into force interaction of the specified screen with means for damping the kinetic energy, produce during their joint movement full repayment acquired by the screen of the kinetic energy and stopping of the protective screen on the border of upper-level work activities, and the further movement of the screen is produced with a delay determined by the formula:

where T is the delay time further movement of the screen;

t1the time perception of the signal fire alert.

t2the time of acceptance by the person of the decision to evacuate from a dangerous area;

t3the time of evacuation of a man from the farthest point of the danger zone,

followed by a further slow moving the screen to the lower level of business activities, for example to the floor.

2. A device for localization of fire, containing a movable protective shield is wound on the drum, a frame with means for fixing and moving the screen, characterized in that the front part of the protective screen mounted to the base, the ends of which are executed axis, with the possibility of axial movement in the slots of the side uprights of the frame, and a means of damping the kinetic energy arising from the movement of the screen, made in the form of racks, with the possibility of axial movement towards the movement of the screen above the border of upper level business activities and about atom direction, each hour is mounted in the hole of the floor of the open doorway and has a shock-absorbing device mounted on the side facing the screen, and the fixation device installed on each shock-absorbing device in the form of the castle to capture the axes of the base.

3. Device for containment of a fire according to claim 2, characterized in that on the front part of the base is mounted an elastic strap.

4. Device for containment of a fire according to claim 2, characterized in that the bottom of the screen made the door, painted with two sides, for example, in bright red color, fixed clamp connections, such as "Velcro" of the contact ribbon or button connection.



 

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