Fire fighting equipment is an important guarantee for the unit's progress and its ability to resist fire. It is related to whether the fire can be predicted in time, whether it can be controlled in time and effectively, and whether it can provide assistance for the personnel to disperse and rescue the rescue. This paper mainly introduces the basic concept and operation principle, usage method and operation requirement of common fire fighting equipment-fire-proof door and fire-proof shutter.
I. Fire doors
Fire-proof steel door refers to the door that can satisfy the fire resistance stability, integrity and heat insulation requirements together with the structure within a certain time. It is generally set on the fire-proof partition wall, scattered stairwell, straight shaft and so on.
1.Composition of fire doors
Fire-proof door is composed of door frame, panel (filled with heat insulation material), fire-proof hardware accessories, electromagnetic door suction and other components. The door fan is made up of hinges, door closers, fire-proof locks, and double doors are fitted with dark pins (mounted on one side of the fixed fan) and a positioner to prevent the overlap of the middle seam of the door fan. There are fire detectors and fire control systems linked with fire doors.
2. fire door classification
Material: Wood fire doors, steel fire doors, steel wood fire doors, other raw materials fire doors; according to the number of doors: single fire doors, double fire doors, multiple fire doors; according to the structural type: fire doors with fire-proof glass, fire door frame single and double grooves, fire doors with bright windows, inorganic glass fire doors; according to the opening and closing conditions: often open fire doors, often closed fire doors; according to fire performance: heat insulation (A), partial heat insulation fire doors (B), non-heat insulation fire doors (C).
3. fire door controls
Both the open fire door and the closed fire door are open to the scattered direction. The single fire door equipment has a release device and a single linkage module, two fire door release devices and two single linkage modules. After the fire detector on either side of the fire prevention door alarm, the fire alarm controller reports to the fire alarm controller through the bus. The fire alarm controller announces the action instruction to the fire-proof door linkage module, and the linkage module drives the release device to open the release action. At the same time, the fire-proof door release device inputs the fire-proof door condition signal into the single linkage module, and then sends it to the fire control room through the alarm bus.
II. Fire screen
Fire-proof shutter refers to the rolling curtain which can satisfy the fire-resistant integrity requirement together with the structure within a certain time. The fire-proof shutter is a kind of fire-proof separator. The method of opening and closing is that the straight-rolled fire-proof shutter is usually rolled up and placed in the rotating shaft box above the door and window opening. When the fire is on fire, it is put down and opened to prevent the fire from extending from the door and window opening. The fire-proof shutter is generally set around the active escalator, the opening part of the atrium with each floor walkway, the hall, the room, and the place where the fire-proof separation equipment needs to be set up instead of the firewall.
1. Fire Curtain Composition
The fire-proof shutter is composed of curtain plate, seat plate, guide rail, support, reel, box, control box, door roll machine, limiter, lintel, manual speed release and closing equipment, button switch and safety equipment. There are smoke-sensing, temperature-sensing detector and fire control system.
2. Fire Curtain Classification
The fire-proof rolling curtain can be divided into ordinary steel fire-proof rolling curtain (fire-resistant limit ≧2 h), composite steel fire-proof rolling curtain (fire-resistant limit ≧3 h) and special grade fire-proof rolling curtain (fire-resistant limit 4 h). When the ordinary steel fire-proof rolling curtain is used for fire-proof separation, the fire-proof rolling curtain should be maintained by active water spray rescue system.
3. Fire Curtain Control
Active control: after the action of the fire detector, in the case of linkage, the fire curtain used as the fire prevention separation will drop after all; used as the fire curtain on the dispersion channel, the curtain first drops to 1.8 m、 from the ground after the other temperature detector action, The curtain drops again.
Mechanical operation: first take out the chain, pull down the chain on the side of the curtain, the curtain will fall; pull down the other side of the chain, the curtain will rise upward.
Manual operation: open the manual operation box located on both sides of the shutter or adjacent to the building member, press the "up "(or marked "Δ" figure) button, press the" down "(or marked "figure) button, the shutter is down; Press the middle button to stop work.